Document RpRwKo6RvXJno8GLk7XMwqZp7

mem PLAINTIFF'S EXHIBIT ET-32 INSTRUCTIONS FOR THE INSTALLATION, CARE AND OPERATION' _ --OF-- - Elliott I Type GY Mechanical Drive Turbines 1- INSTRUCTION BOOK No. 60 JUNE 1943 ! ATLANTA ____ BOSTON MHMHfilH BUFFALO ____ CHICAGO Cf NUINNATI ^ ULF.VKLANM ... OKNVKK ......__ DKTROiT ....... HOUSTON ____ KANSAS CITY LOS ANClF.LF.ft Elliott Company STEAM TURUINE DEPARTMENT--JEANNETTE, PA. DISTRICT SALES AND SERVICE OFFICES Haa*-Howell Building One Federal Sl.r<*(. ./aokHon Building ....... 20 No. \Va<rk*r Drive . Union Central Building Guardian Building Midland Having* Building ........ Dime Hunk Building M k 1C Building Fairfax Building Petroleum Building MIN.NKAPOf.IS ......... NKW YORK ........... PHILADLLPHIA ___ Pittsburgh KAN FRANCISCO___ KT. LOUIS -_________ KKATTLB .................. TULSA___________ ,,,, WASHINGTON, D.C. Wil.KF.s nAKRR ___ ...................... Maker Building ....* TraM*jKtfl.ali<m Building Morri* Building ........................ Friek Building RiitIlt> Building 1221 I/'K'itai' Street Northern Life Tower KcBirnoy Building Tower Building Second National Rank Building t I INDEX SECTION I--GENERAL INSTRUCTIONS Shipment-.......................................... ........... Unpacking1 ................................................... Foundation ................................................. . Installation ................................................. Turbine Piping .......................................... Starting and Stopping........... ,............... Operation, Routine Inspection....... .......... . Daily Inspection...................... Weekly Inspection^.................. Monthly Inspection................ ` Yearly Inspection .................. Renewal Parts and Service Facilities....... SECTION II--DISASSEMBLY AND ASSEMBLY General ................................................ ............................ Casing ........................................ ................................ ... Packing Cases and Carbon Rings ..................................... Rotor Assembly................................................................. Sleeve Bearings.......................................... ...................... Turbine Ball Thrust Bearing.................. .. Normal Speed Governor and Linkage ;........................ . Overspeed Trip Governor and Linkage......... ................. Steam Chest ............................................. ........................ Steam Ring, Nozzle Ring and Reversing Bucket Holders SECTION m--ADJUSTMENTS AND CLEARANCES Nozzle Ring............................... ..................................... Turbine Ball Thrust Bearing............................... . . Sleeve Bearings ..................................................... . Carbon Packing Rings....... ............................................ Normal Speed Governor......................................... .... Governor Lever...................................... ....................... Governor Valve............................................ .................. OverspeedETrip Governor........................... j.Water Cooling oi Bearings ............................ Hand-CpfiS-ted Nozzle Valves .................... . Hand Spcld Changer ............... ................................... SECTION IV--SPARE PARTS Page .. 8 .. 8 .. 8 O8 .. 8 .. .0 .. 10 ..10. .. 10 .. 10 .. 10 .. 10 I 11 11 11 12 12 12 1A 10 13 14 14 14 14 15 IS IS 15 15 15 U1 16- --I-- ' "V\7"0UR Elliott turbine has been carefully designed, accurately built, 1 thoroughly tested and inspected. Every effort has been made to place this unit in your hands in perfect condition, so that you may receive the many years of trouble-free service that have been built into it. When this turbine reaches you, it is expected that you will assume your full responsibility, by adequately protecting it during any period of storage, by providing skilled workmen for moving the unit to and upon its foundation, by aligning and piping it up correctly and by providing proper attendance for routine operation. This instruction book provides such cuts and text as will best illustrate and describe how the above may be accomplished. These re commendations are" based on many years of turbine building experience and should be followed as closely as possible to obtain the best operating results from your Elliott turbine. L ^. . SPECIAL NOTICE Your turbine is protected against corrosion for the period of shipment and installation only. Remove slushing oil before starting up. Provide turbine casing drainage. IF NOT USED IMMEDIATELY Store in clean dry place, in an approximately level position, to avoid distortion. Open turbine, remove carbon rings from rotor and leave them off. Slush the rotor all over. (Refer to Section If, page 11, item "Casing") Slush all finished exterior and interior parts with heavy, non-corrosive oil. Cover complete unit to protect from dust. Inspect periodically and renew slushing oil where necessary. Before starting, slight corrosion should be carefully removed with fine emery cloth. Before using, clean thoroughly with lint-free rags. r , INDEX SECTION I--GENERAL INSTRUCTIONS Page Shipment ................................................................................................ 8 Unpacking ..................................................... ,.................................... 8 Foundation ............................................................................................. 8 Installation ..........................................................................................;, 8 Turbine Piping ..................................................................................... . 8 Starting and Stopping........................................................................... 9 Operation, Routine Inspection....... ........................................................ JO Daily Inspection................................................................... JO Weekly Inspection........................................................... 10 Monthly Inspection ........................................................ . 10 -Yearly Inspection ....... ................................................. 10 Renewal Parts and Service Facilities ................................................ 10 SECTION II--DISASSEMBLY AND ASSEMBLY General ......................................................................... .......................... 11 Casing ..................................................................................................... 11 Packing Cases and Carbon Rings ........................................................ It Rotor Assembly.................... ................................. ............................. 11 Sleeve Bearings ....................................................................................... 12 Turbine 15all Thrust Bearing................................................................. 12 Normal Speed Governor and Linkage ;................................................ 12 Overspeed Trip Governor and Linkage............................................... . LI Steam Chest ................ ................................... . 1.1 Steam Ring, Nozzle Ring and Reversing Bucket Holders ............. .... 13 SECTION HI--ADJUSTMENTS AND CLEARANCES Nozzle Ring.......................................................................... 14 Turbine Ball Thrust Bearing..................................................... .......... 14 Sleeve Bearings ....................................... 14 Carbon Packing Rings................... 14 Normal Speed Governor ............................... ............... ................... . 15 Governor Lever..................... 15 Governor Valve................................................................. 15 Overspeed Trip Governor........................................................ ........... 15 Water Cooling of Bearings......... .......................................................... 15 Hand-Operated Nozzle Valves.................... .................. ..................... 15 Hand Speed Changer.......................................................................... . 16 SECTION IV--SPARE PARTS 1(5 No. Y*1 Y`2 Y.J Y-4 Y-5 Y*7 Y*8 y-9 Y-9A Y-10 Y-ll Y-12 Y*13 Y-13A Y-14A NAME OF PART . Shaft ' __ Oil Filler and SlghtCup* , Bekrlhg' '' ~ Oil Ring Bearing Stop Deflector Ring, - , Packing Caia , Carbon Packing Ring Packing Ring Spring-' Paoklng Ring Stop Eyebolt Pedestal. Stu<f' * . Exhaust End Bearing Pedestal Pedeital Ca<s First Wheal , No. Y*14B Y-14C Y-15 Y-16A Y-16B Y*16C Y.17A Y-17B Y-18A Y-1SS Y*20 Y*23 NAME OF PART Second Wheel Third Wheel Stearn End Bearing Cate Flexible Support First Row of Revolving Buckets Second Row of Revolving Buckets Third Row of Revolving Buckets First Row of Stationary Bucketi Second Row of Stationary Buckets First Row Stationary Bucket Holder Seoond Row Stationary Buoket Holder Noaia Ring Staam End Bearing Casa No. Y-23A Y-23B NAME OF PART Bearing Case Cep Governor Cover Y-24 Upper Half Casing Y.25 Lower Half Casing Y*9$ Sentinel Valve Y*97 Auxillery Hand Valve Y*1B3 Thrust Bearing Cage Ring Y-1S4 Thrust Bearing Dowel Y.185 Ball Thrust Bearing Y-1MA Thrust Bearing Clamping Ring Y-186B Thrust Bearing Clamping Ring Y-187 Thrust Bearing Retainer Y-201 Steam Ring Y-20J Oil Bllngar W Water Cooling Chambers Fig. 1--Section Through Type 3-CY Turbine :i3r.tsa:iL No. Y.238 Y32 Y*33 Y-34A Y-34B YOS Y-38 Y-37 Y-57 Y-fi4 Y-A Y-77 NAME OF PART Governor Cover Overspesd Governor Trip pin Trip Pin Adjusting Nut Adjusting Nut Look Staple Trip Pin Lock Step)# Trip Pin Auxiliary Weight Trip Pin Spring Trip Spring Wether Steam Cheat Steam Cheat Cover Valve Stem Guide Ovenpeed Trip Valve ~ No. Y-78 Y.81 Y-82 Y-83 Y-85 Y-8S Y87 Y*92 Y-99 Y-170 Y*171 NAME OF PART Trip Valve Stem Trip Plunger Spring Trip Lever Connection 8prlng Trip Valve Pina Trip Lever Hand Trip Lever Knife Edge Block Trip Bell Crank Lever . Trip Lever Spring Spring Retainer Valve Stem Nut Pin No. Y-172 Y-173 Y-174 Y-17S Y476 Y177 Y178 Y-17? Y-180 Y-181, Y-113 NAME OF PART Valve Stem Nut Trip Lever Connection Trip Lever Connection Pin Trip Plunger Pin Trip Lever Fulorum Pin Trip Plunger Resetting Lever Trip Lever Set Screw Resetting Lever Spring Resetting Lever Spring Pin Resetting Lever Fulorum Pin Fig. 2--Section Through Overspeed Governor and Valve --------- 'VNORMAL. SPEED GOVERNOR -33v Y-38k\YY--3lK-\ prYY--42A /-34AKY-29W30 !Y7 Y;23B i 87-- 28------- !\ f /' n //A\\v'\ Y-26- 7-39y Y-42.// Y-457 Y-40*< rY-59 /Y-60 GOVERNOR VALVE AND BUSHING , n / li rY-l92 j-Y-193 v "(c ' Y-64B Y-55 r^>Y-64 //Y- 5 6 Y- i 8 8 'tetneff5 SECTION DETAIL Of LEVER FULCRUM ^STEAM INLET STEAM STRAINER No. Y-23 Y-2JB Y-2fi Y-27 Y*28 Y-29 YOQ YOl Y-32 Y-JJ Y04A Y-34Q Y->5 Y-36 Y-J7 Y-JS YO? Y*40 NAME OF PART _ Steam End Bearing Case ___ Governor Cover -- Governor Cage Governor Cage Key Set Screw ___ Knife Edge Scat __ Governor Weight Assembly __ Governor Soring TTL7 Owsoeed Governor Trip Pin Trip Pin Adjusting Nut _ Adjusting Nut Lock Staple Trip Pin Lock Staple Trip pin Auxiliary Weight Trip pin Soring .. Trip Soring Washer _. Govornor Collar Govornor Spring Sleeve Governor Spring Adjusting Nut No. Y-41 Y-42 Y-42A Y-45 Y-47 Y-4S Y*S0 Y-51 Y-52 Y-53 Y-55 Y-5fi Y-YJ Y-58 Y-59 Y.40 Y-62 NAME OF PART Governor Spindle Ball Soaring Governor Swindle Ball Bearing Retaining Nut Govornor Soimile Bearing Retainer Governor Spindle Block Governor Spindle Nut Governor Spindle Becring Lubri cator Governor Spindle Block Pins Set Screw Governor Levor Governor Lever Fuiarum Pin Sot. Screw Steam Che*.l * Governor Valve Governor Valve Pins Governor Valve Bushing Governor Valve Stem No. NAME OF PART Y-i Y-44B YYY.>-64M57 Y*<tf Y-f,9 YO?.7 Stoarn Chnst Cover Valve Stem Packing Bo* Ring Packing Packing Nut Valve Stem Locknuts Valve Stem Block Go/ornor Lever Blocks Thrust. Bearing Retainer Y*m Ball [tearing Inner Dust Weihar Governor Lever Fuforum Bali Bearing Y050 Bali (Jeering Outer Dust Washer Y-1WA Ball Bearing Nut Y19)B Lock Washer . Y-J92 Pipe Plug Y-393 3teem Strainer Cover Y.xn Gasket Y-19S Steam Strainer Fig. 3--Section Through Steam Strainer, Governor Valve and Governor / No. A 3 C D C NAME OF PART Cbam Che t Drain Steam Strainer Ccnnectlon Casino Drain ' Leakjff from Packing Glands St)~m Seal C.nneotijn Ni. NAME OF PA .IT V Oil Orelna W 1 ). W*2 Cooling Wetor Connsethns W-. I EXHAUST END APPROX. DIA. ASBESTOS THREADS. LAY IN JOINT SEALER AS SHOWN. STEAM END Fig. 5 SECTION I--GENERAL INSTRUCTIONS SHIPMENT 1'ig. 1.) Shim under the turbine exhaust end The type CY turbine is^hipped as a complete unit, mounted on substantial skids and covered with an open framework of light crating. The purpose of the latter is tcTindicatc to the riggers the outside limits of the turbine and provide a means of visually identifying the contents of the bearing pedestal (Y-13) and under the steam end bearing case flexible support (Y-1S) to bring the turbine to the proper height, level and in align ment with the driven apparatus. In no case .should the pedestal studs (Y-12) be changed from the factory setting. crate. It is not considered=to be a protective cas With the turbine at the proper height and in ing. All vital parts of the turbine are so protected final alignment slug up the foundation holding by the skids or adjacent members as to withstand down bolts and dowel the exhaust end bearing considerable rough handling. Partial collapse of pedestal (Y-13) to the solepiate or bedplate. the open crating does nfjt, in general, indicate The work of alignment should he very carefully damage to the turbine. ' done as this is one of the most important steps in installation of the turbine and upon the accuracy UNPACKING of this work will largely depend the degree of Remove the crating framework surrounding smoothness with which the unit operates. the turbine.and examine the unit for any damage due to very rough or improper handling in transit. If the unit, is not to be used at once, follow the directions contained in the_special notice attached to the turbine and to the_turbine crating. This special notice is also shown on the index page of this instruction book. ' If the unit is to be installed at once, remove the coverings from the variousopenings and carefully clean the slushing oil from the several parts. With the turbine still on the skids move it to the site of the foundation and there remove the skids. TURBINE PIPING No part of the turbine installation is more im portant, for future successful operation, than a well-designed and well-executed piping job. There arc two definite, objectives in a good piping job: to prevent the heated piping from imposing strains on the turbine casing and thus affecting the alignment; to so connect and drain the tur bine steam and exhaust lines that dry steam is furnished to the turbine and water accumulation in these pipe lines is prevented. FOUNDATION The high-pressure steam supply line sliould.be taken off the top of the steam header at a point as The area and depth of foundations for mechani near the turbine as possible. Drain this header hy cal drive units are, to a considerable extent, means of a steam trap, connected near the turbine dictated by the type of the driven apparatus. A take-off. As an alternate a steam separator may minimum requirement for a foundation for these be put into the high-pressure turbine supply line turbines is considered to be one with sufficient to prevent water entering the turbine and causing bulk of concrete or steel to absorb minor vibra expensive eroding of the turbine buckets. tions and to prevent synchronous vibrations being (..earl the turbine steam line through suitable set up in the concrete or steel building members. expansion bends to a conveniently located turbine Allow provision for accessibility to all parts of 'throttle, valve preferably located in a vertical line. both the turbine and the driven apparatus. J'roceeding from this point, terminate the supply INSTALLATION In some cases the driving half of the coupling is mounted by the manufacturer of the turbine line with a turbine steam liiie coupling flange which must be solidly anchored to the floor or foundation, leaving the balance of the line free to move or expand as required. The connection and in other cases it is mounted by the manufac between this flange and the turbine inlet flange is turer of the driven apparatus, or the purchaser. In any case the coupling should be carefully heated and shrunk onto the turbine shaft. Driving the coupling on with a hammer should never be attempted as the force of the hammer blows will damage the turbine thrust^bearing. to be made without forcing the pipe line in any direction whatever, in order to make a satisfac tory joint. This connection may be; considered entirely satisfactory if the supply line, when heated to operating temperature, does not kick out of line with the turbine inlet flange when the Move the turbine upon its foundation, and set it bolting is withdrawn. level and in alignment with the driven apparatus Cover the turbine supply line with a good grade by aligning at the coupling halves. (Refer to of pipe covering. r The turbine exhaust flange should be connected iv to the turbine through a suitable flexible copper or other type of expansiGrrytunt. If this line leads STARTING AND STOPPING (Refer to Fig. 1) to other piping, an exhaust line valve must be installed and a suitable steam trap should be provided at the low point' in this line to prevent an accumulation of water 'in the turbine casing. An exhaust line connection to the turbine which does not contain a flexible joint and a continuous Prepare the turbine for the initial start-up as follows: 1--Remove the governor cover (Y-23B), bearing case cap (Y-23A) and pedestal cap (Y-13A). 2--Remove both upper and lower halves of ly trapped drain is a constant menace to proper turbine operation, and the saving effected by their both bearings (Y-3) for inspection and cleaning. omission cannot be reasonably justified. Refer to Fig. 4 for the miscellaneous piping connections to this turbine, all of which are identified and their use described below. 1--"A"--J4" pipe tap--steam chest drain-- connect through high-pressure piping and a globe valve, located near turbine ' throttle valve, to open drain. Open, just prior to starting, ftr drain water from steam chest. Close when water ceases to emerge from drain Tine. When emergency valve is tripped, close turbine throttle valve, open drain "A" to relieve steam chest pressure, reset emer gency trip with reset level; close drain "A"; open throttle valve to start turbine. 2--"B"--1" pipe tap on rear side ot steam chest--blow-down connection from steam strainer space. Blow down as directed . under "Routine Inspection." 3--"C"--Yi pipe tap--casing drain--con nect through valve to open drain; open just prior to starting^turbine; close when casing is fully drained. Open when tur bine is shut down and exhaust valve is 3--Carefully clean both bearing oil reser voirs and journals and replace lower halves of bearings. 4--Fill reservoirs to overflow height with "heavy medium" turbine oil having a vis cosity of 230--330 seconds Saybolt at 100 deg-. F, Lubricate coupling if necessary. NOTE:--If turbine is used in connec tion with a reduction gear and the bear ings are forced feed follow directions given in gear instruction book for lubrication. 5*--See that lower halves of bearings are flooded with oil and that ball thrust bear ing (Y-185) is likewise flooded with oil. Fill governor spindle bearing lubricator (Y-50, Fig. 3) with "light" turbine oil. 6--Replace all of the above parts, insert dowels and pull down bearing cap nuts securely into place. Turn unit over by hand to see that everything is free. 7--Open steam chest drain "A" and casing drain "C." If overspeed trip valve (Y-77, Fig. 2) is closed, reset by pulling back reset lever (Y-178). 8--When above drains cease to bleed water, closed. partially open throttle valve and allow 4--"D"--pipe tap--leakoff connection from carbon packing rings--connect to open drain without valve. Be sure that turbine to run at about 800--1000 R.P.M. for 10 minutes, meanwhile observing general operation of the unit. no back pressure is~applied to this line. 9--Bring the turbine slowly up to speed cm 5--"E"--j4 pipe tap--steam seal for car the throttle valve, until the governor bon packing rings--Furnished only takes hold, then open the throttle valve when turbine is operated under vacuum.' wide. Check the speed. The full-load Connect to a source of. steam supply speed is stated on the turbine name plate. through a throttle valve. Admit steam to 10--Shut down the unit by striking the hand glands until a wisp~pf steam leaks out of trip lever (Fig. 4) sharply, either with "D." This prevents air leakage inwardly. the hand or the foot. (Not necessary to pipe up "D" on con 11--Close throttle valve--open steam chest densing turbine). drain "A," and when steam chest pres 6--"W"--y3" pipe taps---water cooling con sure has been reduced reset overspeed nections to the turbine bearings--located trip valve as before. Open throttle valve on the trip reset lev<w side of the turbine. and again bring turbine up to speed. . Connect with a source of cool water 12--With one operator reading speed on through a stop cock and a globe valve an accurate hand tachometer another into W-l; out of W-2; into W-3; out of should push against the force of the gov W-4 through a one-foot head loop to an ernor, by firmly grasping both ends of open drain. (Shown diagrammatically in the governor lever (Y-53, Fig. 3), until Fig. 4). Adjust stopcock so that a mod the speed rises 15 per cent or the unit erate flow of water^passcs into the open trips out. Tripping will occur at 10 to 15 drain with globe valve wide open, Then per cent above operating speed. Close V. operate by full opening or closing globe valve when turbine is started or stopped. throttle valve and reset trip as before. 13--Unit is now ready for service. --9-- 14--Routine startingyyls accomplished by checking oil levels, opening the drains and bringing the Turbine up to speed on the throttle. Close drains when they bleed .-.team inslcST of water. 15--When shutting down, trip the overspeed valve bv hand or close throttle valve. Open tlie drains."r OPERATION, ROUTINE INSPECTION Tiie.se machines requirira. lninimnm of operat ing attention since they Jrc substantially built to withstand the severe settee conditions to which mechanical drive turbines are usually subjected. Providing adequate lubrication is the one really e.s.wnlial and important operating detail. How ever, any routine system" of inspection which anticipates possible opentTing difficulties before they reach serious proportions is manifestly desirable, and such a routine system is outlined beiow. The adoption otziliis system of routine inspection with such modifications or amplifica tions as are necessary to'HF it into the operating schedule of your particular unit is recommended. DAILY INSPECTION 1--Check oil level on all bearings. 2--Fill governor oil cup once every 8 hours. 3--Check bearing temperatures by hand. 4--Check smoothness of operation by hand and note any change. 5--Note any unusual noises or conditions and check frequently. __ 6--If shutdown is made daily, trip einer- gency valve by striking hand trip lever. 7--Check speed of unit. WEEKLY INSPECTION 1--Blow down steam'strainer connection "ir (Fig. 4). _ ^ 2--If not on continuous running schedule, trip emergency valve by overspeeding the turbine, as previously -described. 3--Oil governor and overspeed trip linkage sparingly with oil can. YEARLY INSPECTION 1--Belorc disassembling or assembling any of the various units of your turbine, carefully read Section If of this book. 2--(.'.beck all clearances and adjustments as directed under Section III. Replace any wearing parts that may be too badly worn for further use. 3--Dismantle speed regulating governor and linkage (Fig. 3), anil check tor lost motion or worn [tarts. Clean thoroughly, lubricate and reassembly. Adjust tor correct speed. 4--Dismantle overspeed trip governor and . linkage, shown in Fig. 2. Cheek fur ease, of operation; clean anil lubricate sparingly. 5--Examine governor valve and bushing fY-58, Y-04--Fig. 3) anti rlean. Grind in valve if unevenly worn. Check governor valve stem ring [tacking (Y-(>5) and re place if necessary, lie sure packing does not bind when reassembled. <5--Clean stem of overspeed trip valve (Y-78, Fig. 2). 7--Check turbine bali thrust bearing (Y-185, Fig. 1) for end play. Flush out with a pressure stream of clean oil. 8--Check operation of sentinel valve (Y-%, Fg. 1). _. _ 9--Lift casing and inspect both the moving anil stationary blading; clean out any accumulation of scale and dirt between the buckets. 10--Check carbon rings to sec that they arc not fouled by an accumulation of scale or rust in packing cases. Carefully remove rings, clean and reassemble. CAUTION : --Read Section II. 11--When again in operation check turbine speed, tripping speed and general opera tion. 12--ft is a good idea to have an Elliott ser vice engineer inspect your turbine once each year. MONTHLY INSPECTION 1--Change bearing oil and clean oil reser voirs. If in a very dirty atmosphere make this a weekly duty. 2--Remove governor Fbver and bearing caps and make visual inspection of governor parts and bearings. Clean as necessary. ~v 3--Check governor linkage and overspeed linkage for lost motion. 4--Remove steam strainer and clean. If very dirty, make this a weekly operation. 5--Oil governor lever fulcrum ball bearings, (Y-189, Fig. 3). 6--Check coupling between turbine and driven apparatus for looseness or wear; if this is a lubricated coupling, check the lubrication. RENEWAL PARTS AND SERVICE FACILITIES The Elliott Company maintains a staff of field engineers to supervise the installation and start ing up of new units. They arc also available for inspecting, adjusting, ordering repairs, ami suiter- vising or installing repairs on older units. Their services are available at any time, usually on very . short notice. In case of emergency their expert knowledge may be of great assistance in getting the unit back in service without delay. Order turbine repair parts from tin; Elliott Company, Steam Turbine Department, jenuneiie, I'a., nr send the order through Ihe nearer.l disiiici office "When time is available, A list of ilmliiil offices is given on page 1, . --10-- SECTION II--DISASSEMBLY AND ASSEMBLY GENEltAL Disassembly and assembly of the various parts of your turbine should be a familiar subject to your operating ami maintenance personnel, in order that they may accomplish the tvork or routine inspection and be capable of checking and adjusting those parts which may require this service. " llange bolting, starting nearest the shaft on both sides and working outwardly. 5--Coat both the horizontal and vertical joints of the carbon packing cases with joint sealer. CAUTJON :--Do not allow sealer to run down into carbon ring ' spaces as it will prevent the rings from scaling oil the side walls. Place upper half packing cases in posi- Much of the design of this unit is so clearly shown in the cuts that no description of dis assembly or assembly is considered necessary, in and insert dowels in horizontal llange and pull tip horizontal llange holts tight. Pull up boiling on vertical split. general, only such descriptive matter is given under this heading, as fcf necessary for future replacement of a wearing part or the checking and adjustment of some ^clearance. Any future major replacement. such_ as wheels, buckets, shafts, etc., or any future major overhaul should he done under the supervision of an Elliott Com pany service engineer or aTlhe factory. PACKING CASES AND CARBON RINGS To remove the carbon rings and their retaining springs (Y-9, Y-9A and Y-10), lift the upper bait packing cases (Y-8), as previously described. Un hook and remove the. circular spring assembly surrounding each three-piece carbon ring, after which the separate pieces of the ring may be CASING removed by rolling around the shaft. CAUTION : --Keep the three parts of each ring and spring To remove the rotating'clement or to inspect assembly of each ring together so that they may the interior of the. turbine, the upper half turbine he replaced together in the same parking ease casing (Y-24, Fig, 1) must be, lifted. First remove groove, from which they were removed. both the vertical and horizontal bolting on both . -To reassemble, clean out packing case, grooves upper half carbon ring- fracking cases (Y-8); thoroughly, clean shaft and rings with kerosene. break the joints by striking sharply with a lead Place springs around shaft and hook ends to hammer and carefully lift the cases straight up gether. Starting with that segment of the ring until they clear the carbon rings. Next remove the into which the dowel fits, force the proper .seg turbine cover bolting, break the horizontal joint ments under their respective springs. CAUTION : ana lift the cover upward until it clears the wheels. --He sure that those sections which abutt each Cover (Y-24) weighs approximately 225 lb. other are marked with similar markings so that To reassemble:-- 1--Scrape and carefully clean all exposed joints on both the upper and lower they are reassembled mark to mark. Reassemble gland cases as directed above. halves of the turbine casing (Y-24 and Y-25), as well as those on the upper and lower halves of the packing cases (Y-8). Do not allow scrapings to fall into the lower halves of the packing cases be ROTOR ASSEMBLY The rotor assent lily consists of the shaft, upon which arc mounted the wheels, the driving half couplings, .slim, rs, ball thrust hearing assembly tween the carbon rings and the walls, and the nor tal speed governor assembly. To Jilow out with air if available. remove the rotor from the casing', disconnect the 2--Apply a good coat of graphite and oil mixture, or an equally good steam seal ing compound, on the horizontal flange of the lower half turbine casing, and in it lay two asbestos threads (approximately 1/52" dia.) as shown in Fig. 5. CAU TION:--Do not allow threads to be too near studs as clearance holes in cover may expose them; be sure that thread ends do not extend into the carbon pack turbine from the driven machine at the coupling and remove the upper half turbine casing (Y-24), the upper halves of both carbon ring (lacking cases (Y-8), the pedestal cap (Y-13A), the gover nor cover (Y-23B) and the steam end bearing case cap (Y-23A). Remove the top halves of both sleeve bearings (Y-.3). Refer to Fig. 3. Disconnect the governor spindle (Y-42) from the governor lever (Y-53) as ing case horizontal splits. follows: Remove the hall hearing nut (Y-191), 3--l/ower the upper half casing over the tur governor lever set screw (Y-5fi) (mark so that bine wheels and shake to a solid seating. identical replacement can he made) and drive I liuwi'l dowebii pull down on horizontal governor lever fulcrum pin (Y-S5), together with lower ball bearing- assembly out of bearing case Remove the overspeed governor trip pin (Y-32) housing (Y-23). Remove governor spindle lubri and the complete pin assembly by first taking out cator (Y-50), governor Jpindle block pin set the U-shaped adjusting nut lock staples (Y-34A screws (Y-52) and pins (Y-51). Swing governor and Y-31J5), located at each end of (lie trip pin. lever away from turbine,^pivoting on governor Then unscrew the trip pin adjusting nut (Y-33), lever blocks (Y-69). Governor lever may then be after which the trip pin spring (Y-36) and trip lifted off and laid aside, yy ' pin (Y-32; will come out. It there are auxiliary Lift rotor straight upward (weight approxi weights (Y-35) in your machine, these may now mately 250 lb.) being surejto protect shaft jour be removed. nals and carbon rings from damage. Lay rotor Having removed all parts of the governor aside and prevent from rolling by blocking under assembly, the governor cage hub set screw (Y-28) wheels. CAUTION:--While rotor is o.ut of cas should now be removed and the hub in the ing keep ball thrust bearing" assembly tied up in vicinity of the set screw should be evenly heated clean rags to prevent the entrance of dirt. with a torch, after which it may easily be bumped When lowering rotorUinto position shake off the shaft. CAUTION :--In heating the gover lightly so that wheels willjiot engage the revers nor bub, avoid heating the shaft as much as ing buckets while descending. Cease lowering possible. If a puller is used, be sure to pull on the when carbon rings are about to enter their re huh rather than at the end of the governor cage. spective slots. Be sure that, rings and slots are Next, remove the ring (Y-203) by splitting it. lined up before final lowering and that the slots Then remove the three-piece retainer (Y-187) are free from scale or rust. CAUTION:--See that after which the ball bearing assembly, including ball thrust bearing positioning dowel (Y-184-- the housing, may be driven off the shaft. Fig. 1) is in position and that the clearance Remove the old bearing from its housing and between the first wheel shroud (Y-16A), and insert the new one; put on the clamping ring nozzle ring (Y-20), is approximately 1/16 inch. (Y-186A) and secure it with the plate screws, making sure that the bolt bead locking wire is SLEEVE BEARINGS Removal of the sleeve bearings (Y-3) is readily accomplished by removing the bearing caps (Y-23A and Y-13A). Lift out top halves and roll out bottom halves, allowing shaft to rest on packing gland cases. When replacing make sure that oil rings are correctly placed and free to turn, that the posi tioning dowels (Y-5) are in place and that the bearing is flooded with oil._ If high spots show in the bearing, scrape them out lightly. - threaded through the bolt heads to keep them from backing out. Slip the assembly on the shaft and tap it into place by means of a sleeve which strikes the shaft race of the ball bearing. Drive the bearing into a solid seating against the shoulder on the shaft. The three-piece bearing retainer (Y-187) must fit tight between the bearing (Y-185) and the shoulder on the shaft nearest the governor cage. Obtain this fit by grinding off the end of the retainer next to the bearing. The retainer pieces should be tapped into place to insure a tight fit between the bearing and the shoulder on the shaft. Measure the depth TURBINE BALL THRUST BEARING of the recess in the governor cage at the point it slips over the retainers to determine the location The turbine thrust bearing is located in a of the shrink ring (Y-203). The ring should he houUng composed of the thrust bearing clamping heater] rjuile hot to insure adequate expansion for ringo (Y-186A and Y-18611) and the bearingcagc the heavy shrink allowed in the ring fit. Next the ring (Y-183). It is held in position and located governor case huh may be slightly heated ami axially by dowel pin (Y-184). slipped on the shaft. Be sure that the cotiuierlioi'e To remove this bearing the rotating element in the hull covers the ends of the. retainer (Y-187) must first be lifted from the turbine as previously and that the emergency trip pin holes in both the described. shaft and governor case hub line up. Replace set Refer to Fig. 3. Before removing the governor screw (Y-28), prick punch it to hold in place and spring adjusting nut (Y-40), measure the distance replace the governor parts as described below. from the end of this nut to a convenient point on CAUTION;--Keep the ball bearing clean and the governor cage (Y-26), so that on reassembly flood with oil before use. the nut can be put back into its exact previous setting. Having removed governor adjusting nut (Y-40), grasp the governor: spindle (Y-42) and pull outward, which will allow removal of the. NORMAL SPEED GOVERNOR AND LINKAGE governor weights (Y-30), the governor spring This mechanism is shown in complete* detail in (Y-31), and the complete spindle assembly. Fig. 3; Before rcassemblying clean all parts and --12-- the. shrift end carefully. It any burrs arc present sharply to see that It works freely. Replacement they should be removed. of the linkage is clearly shown in Fig. 2 and needs The governor spindle assembly consists of the no description. governor spring sleeve _(Y-39), the governor spindle bearing retainer TY-45), the governor STEAM CHEST spindle ball bearing (Y-41), and the governor spindle (Y-42). This ass&nbly may be taken apart for inspection' or replacement of the bail bearing by removing the governor spindle bear ing retainer (Y-45), When this nut is replaced and pulled up tight be sure that the bearing turns freely and has no perceptible end play. Lock the nut by prick punching thetardge of the nut head into saw cut oil the sleeve. -- Place the governor collar^ Y-38) on the end of the spindle assembly and slide this entire mech anism into the shaft end, Insert governor weights (Y-30) and in this operatiorrsee that there is no scale or rust between the governor weight knife edges ami the knife edge seals (Y-29). Next, insert governor spring (Y-3j) and partially screw in adjusting nut (Y-40). At this point pry up each weight with'a fukrumed screw driver to see that the governor operates freely. Screw up on adjust ing nut to tiie setting which has been previously registered by measurement: To reassemble governor lever (Y-S3), engage the lower end governor lever blocks (Y-69) into the governor valve stein block (Y-58). Swing the lever into position with the governor spindle block (Y-47) between the upper lever fork. From the under side tap the governor lever fulcrum pin (Y-55), which is assembled with ball bearings (Y-1S9), washers (Y-1S8 and Y-190), lock washer (Y-191B), and nut (Y-19IA) up through the governor lever and assemblejwusher (Y-I88), ball bearing (Y-189), washer (Y-190), lock washer (Y-191B), and nut (Y-191 A) on the protruding end, in the order named. Screw governor lever set screw (Y-56) into its previous position. Insert governor spindle block pins (Y-51) and set screws (Y-52) into position: Replace governor spindle mit (Y-48) ami oil cup (Y-50) into posi tion. CAUTION:--After governor linkage lias Refer to Figs. 2 and 3 for sections and Fig. 4 for external view oi steam chest. The steam chest is composed of three chambers through which the steam Hows as follows: steam passes from the steam inlet through the steam strainer basket (Y-195), then through the gover nor valve and hushing (Y-58 and Y-60), and from this point, through the overspeed trip valve (Y-77, Fig. 2) into the steam ring and tints into the turbine nuzzles. All of these parts are housed in one casting which in turn is bolted to the steam ring of the turbine. To inspect the strainer basket, it is only necessary to remove the cover (Y-193, Fig. 3), after which the basket can be taken completely out and cleaned. To inspect the governor valve and the overspeed trip valve, the governor lever (Y-S3) and the trip belierank lever (Y-92) should be removed, then the steam chest cover (Y-64) may be taken off, exposing both the speed regulating governor valve and the over speed trip valve. The governor valve (Y-58) may lie removed by pulling the valve straight out ward. In the event that the valve hushing (Y-60) is to he removed, it must lie pulled mil. with a puller prepared especially for this service. To reassemble governor valve hushing, place bush ing in the steam chest anil drive into position witli a bar of nonferrous metal and punch the edge of the steam chest so that the bushing cannot come out. The governor valve can be replaced and reassembled by sliding tbe governor valve stem through the packing ring (Y-65). Reassemble the steam chest cover (Y-64). This is a metal-tomctal joint with the steam chest (Y-S7), and is made up with graphite and oil, first being sure that the joint surfaces are clean. J'lace dowels in position and pull down strongly on the holding down bolls. been disassembled and reassembled check valve travel as described in Section III under "Adjust STEAM RING NOZZLE RING AND ments." REVERSING BUCKET HOLDERS (Fig. 1) These parts form the path of the high-pressure OVERSPEED TRIP GOVERNOR . AND LINKAGE steam through the turbine. The bucket holder (Y-18A and Y-18B) and nozzle ring (Y-20) may be removed by working on the inside of the Refer to Fig. 2 which shows the details of this turbine after the rotor is lifted, this complete mechanism. In replacing the trip pin (Y-32), he assembly may also be removed by removing the sure that the trip spring washers (Y-37) are in steam chest, the steam end hearing case, and position since they are a part of the adjustment flexible support (Y-15), after which the steam for determining the speed at which the unit trips. ring can he unbolted from the lower half turbine I'lm'i' U staple wires (Y-34A ami Y-IWR) in pusi- case and the entire assembly lifted out. All of Iiiiii ami with u screw driver placed on trip pin these steiiui joint are melal-lo-mctnl and are made adjusting nut (Y-33) press (lie pin outward up with steam joint sealer when reassembling. --13-- SECTION-!!!--ADJUSTMENTS AND CLEARANCES NOZZLE RING (Y-20, FifTl) Adjustments--None. ` Clearances--Normally \J\(>" between nozzle ring (Y-20), and shroud uLfirst row of moving buckets (Y-16A). Minor variations permissible. Obtained by feeler gage measurement. Check whenever rotating element,"nozzle ring-, or steam ring is removed from the'turbine and is re assembled. To vary, change location of positioning dowel (Y-184) in thrust bearing cage ring (Y-183). Excessive bearing clearance may lead to tur bine vibration. Clearances in excess of .015 are generally considered excessive. To correct excessive clearance replace the bearing. When putting a new bearing into ser vice, place it in position, clamp bearing cap lightly and run for 5 or 10 minutes or until hearing becomes hot. Remove the bearing and scrape high spots, repeating this operation until full length contact is obtained after which the bearing may be put into permanent service. TURBINE BALL THRUST BEARING (Y-185, Fig. 1) ' CARBON PACKING RINGS (Y-9, Y-9A, Y-10, Fig. 1) Adjustments--This thrust bearing locates the Adjustments--The shaft under these carbon axial position of the rotating element with respect . rings is prepared with a hard non-corrosive sleeve to the stationary parts. It carries no radial load. which makes possible very close running clear To change the axial position of the rotating ele ances; All rings, when newly installed must be ment remove bearing case cap (Y-23A), and turn "run in" to achieve the highly polished, glossy the thrust bearing cage ring (Y-183) into a new surface required for a minimum of wear. These position so that the present dowel hole will not rings are impregnated with oil for lubricating register with the hole in the cap. Make sure that purposes during the "run in" period and may the oil drain hole in the thrust bearing clamping smoke considerably during the first 24 hours of ring (Y-186A) is on a vertical and below the service, which condition need give the operator shaft. Block the rotating element into the desired no concern. position and replace bearing^case cap (Y-23A). At times steam leakage along the shaft is Drill a new ]/2" dowel hole into the thrust bearing caused by improper seating of the ring against cage ring (Y-183), using Ihejudc in tire cap as a the sides of the packing ring ease grooves due to drill jig--do not drill deeper than into ring. deposits of foreign material between the rings and Replace dowel. their side seats. The only remedy is to clean out Clearances--Large radial clearance--it carries this foreign matter. no radial load. Negligible axial clearance or end So called "fitting" of carbon rings in the field, float--not adjustable--if excessive, replace ball the operation wherein the butt ends of the seg bearing. ments of a ring are filed down to reduce the bore of the complete ring, can only be considered SLEEVE BEARINGS (Y-3, Fig. 1) satisfactory as an emergency measure. When ' rings arc "fitted," prepare a mandrel 3.000' diameter and use this mandrel as a guide for the Adjustments--When necessary scrape high bore of the ring segment while fine sand paper or spots lightly to give contact the full length of the a file is held or damped radially against the man bearing. The sleeve bearings are interchangeable. drel and thus by axial movement of the ring Bearing halves are positioned relative to each segment the butt end is worn down radially to other by two blind dowels on the horizontal split reduce the bore. and are positioned in the casing by locating pins The most satisfactory correction is to replace (Y-5). Rebabbitting of thesej>earings should not the ring with a new one. be attempted in the field--return them to the Clearances--The cold clearance between new factory for this operation. rings and the shaft is .001" to .003". Worn in Clearances--These bearings are factory fitted clearances may be considerably higher with satis to give a cold clearance of .002" to .006" larger factory results. Measurements of ring clearances than the shaft. Check at long- intervals (unit not are unreliable without recourse to proper "go" running) by placing a short strip of soft fuse wire and "no go" gages. In the final analysis ring fits in center of bearing on lop and shaft and clamp are always satisfactory if steam does not leak out ing bearing into position. Measure thickness of of the packing case along the shaft, and even a flattened fuse wire by micrometer. light blow here is not considered unreasonable, 14-- NORMAL SPEEETGOVERNOR (Y-40, Fig. 3) ' Adjustments--The turbine nameplate states the normal speed at which your turbine should operate under lull load altd contract steam con ditions. Any substantial variation from these con ditions should only be attempted after consulting the nearest Elliott Company district office. Minor variations of speSJ adjustment to suit minor changes in operating loads are obtained by tightening the governor spring adjusting nut (Y-40) for an increase in speed, and slacking off on this nut to decrease the speed. The governor spindle ~ball thrust bearing (Y-41) is designed to take the thrust of the gover nor valve and is sclf-alignmg by reason of the spherically seated collars oTrcach end of the bear ing. The end play in this bearing should lie very slight but at all times the bearing must rotate treely. There are no adjustments on this bearing. Clearances--The clearance"between the gover nor spring sleeve (V-39) and the shaft end should be an easy sliding At. Governor spindle blockpins (Y-51) arc to lie an easy fit in spindle block (Y-47). Governor lever blocks (Y-69) should be free fitting in the valve stem block (Y-68). With.unit not running measure from the inside valve stem lock nut (Y-67) to the valve stem packing gland hub of the valve cover (Y-64JJ). Record this dimension. Loos en all tlie lock and check nuts (Y-67) and turn valve stem clockwise until the valve scats. With valve in this position screw in side lock and check nut against valve stem block (Y-68) and again measure the above distance. The difference between the above two measurements is the governor valve travel. Reset as before. Clearances--Governor valve stem (Y-62) must at all times move freely in packing-(Y-65). Aiter screwing up on packing nut (Y-66) try movement of valve stem in packing. OVERSPEED TRIP GOVERNOR (Y-32, Fig. 2) Adjustments--The speed at which the over speed trip pin (Y-32) flies out and trips the over speed valve may be increased by removing U staple (Y-34A) and screwing up adjusting nut fY-33). If this is insufficient add washers (Y-37). To reduce the speed reverse this process. CAUTION':--Replace U staple and check speed carefully as described in Section,I. GOVERNOR LEVER (Y-53, Fig. 3) . Adjustments--When this lever has been re moved and replaced, set the center hub of the lever approximately central between the two ball bearing housings and insert set screw (Y-56). With the turbine operating, loosen set screw and move governor lever (Y-53), first towards one ball bearing and next towards the other. At the point where vibration on governor oil cup (Y-50) is a minimum tighten set screw, Clearances--Linkage pins (Y-174, Y-175, Y-176) and plunger (Y-177) are to lie free sliding fits. Overspeed valve stem (Y-78) about .010* clearance in bushing--clean out scale if sticky. Maintain the 1/16' clearance shown between trip pin (Y-32) and trip lever (Y-85). WATER COOLING OF BEARINGS Hook up as shown on Fig. 4, HAND-OPERATED NOZZLE VALVES . (Y-97, Fig. 1) (Fig. 4) Governor Valve (Y-58, Fig. 3) Adjustments--The travel of the governor valve should he the minimum required to enable the turbine to carry full load under the lowest steam pressure condition. In no case should this travel be greater than 5/8". The factory setting may be determined and recorded as follows: Adjustments--Extra banks of nozzles, when ordered, arc furnished to increase the turbine power for an overload condition, to carry normal full load with a reduced steam pressure, or for part-load steam economy. Operate either full open or full closed, For maximum efficiency operate as much as possible with hand valves closed tightly. Clearances--None requiring checking. f -IS-- HAND SPEED-CHANGER (Figr6) Adjustments--Done at the factory ami should not require further attention. It, however, gover nor valve or valve stem (Y-62) is being replaced, record original dimensions "A" and "11," from actual measurements on tip: turbine. Then make new setting as follows: With turbine not running, close governor valve by'Screwing stem inward until valve is on its seatpThcn set distance "A," and pin checknut in placer Unscrew valve stem until checknut is againstYvalve block. Assemble handwheel and locknut, arrd set distance "B." Pin handwheel in place. Operation--With vaiverstem in latter position (checkout against block), adjust compression oi main governor spring untTTthc speed of the tur bine is the maximum desired. The speed may now be decreased by turning the band wheel clockwise until stopped by locknut^and block. For any intermediate position, the turbine speed is in creased by turning the handwheel counter clockwise, and decreased-Ivy turning clockwise, locking stem in place by knurled locknut. Any required operating speed beyond the range of the speed changer must be -obtained by shutting down the turbine and readjusting the compres sion of the main governor^pring. Dual Drive Units--For "dual drive units, adjust speed changer to give a Turbine no-load speed slightly less than the speed of the motor at full load. If motor fails and turbine takes the load, bring turbine speed up to-normal full-load unit speed with the speed changer. When motor again takes the load, reduce turbine speed with hand speed changer. -- t Fig. 6 No. . NAME OF PART Y-62 Govtrnof V*lv Stem Stop Nut Y.W1 Chock Not Y-m Volvo $Um Block Y-m Knurl.d Nut Y-200 Handwhmt SECTION IV--SPARE PARTS In order to insure long pcTiods of uninterrupted service, freedom from shutdown due to mishaps of operation or improper usage, it is recommend ed that the following spare parts be carried:-- (FIG. 1) 1 Sleeve Bearing, Y-3. 1 Set (4) Carbon Rings' and Springs, Y-9, Y-9A and Y-10. 1 Turbine Ball Thrust Bearing, Y-185. 1 Thrust Bearing Retainer, Y-187. 1 Oil Slinger, Y-203. (FIG. 2) l Emergency Trip i'in Assembly, Y-32, Y-33, Y-.34A, Y-34B, Y-35, Y-3A, Y-37. . 1 Additional Trip Pin, Y-32, 1 Set Trip Linkage Pins, Y-I74, Y-175, Y-170. 1 Reset Lever Pin, Y-1K2. 1 Knock-off I,ever Latch Plate, Y-S7. 1 Set of Springs, Y-81, Y-8J, Y-99. Y-LSO. (FIG. 3) 1 Set Governor Valve Stem Packing, Y-AS. 1 Governor Spindle Assembly, Y-39, Y-41, Y-42, Y-42A, Y-45, Y-47. 1 Governor Sleeve Collar, Y-3H, 1 Set Governor Lever Block Pins, 3'-51, I Set Valve Stem Block Slides, W -(fh --16-- 1