Document V380XEwvYwDxMZ8dgRGKZ1BX4

i,-> 5 "f if &f;- f TECHNICAL BRIEFS 10 Dlgetb tin you on: HYDRO POWER POMPS latest engineering developments lor busy power men GAS TURBINES For this new addition to their New York City power plant at East River and 14th Street... HIGHEST HEAD AND LARGEST HYDRAULIC TURBINES BUILT IN EUROPE PUnt nsrae Hlgheit*hend pelton turbines Leu- Head. Output, Speed, tion ft hp rpm Manufacturer Rsfeooek Dlxence M fertile PuniDoo Austria 8wits. Mil. Prases seoo stoo 4730 tso .) 1,000 10,000 47,000 SS.600 Pri|aUrn UPfentu Netto Bethfe Prsocs Hi ly Francs mo 100,000 14,700 MM 90,400 750 Charmilles 300 Charmilles 300 Charmilles 300 CharmUle* wilb Atsthom.CharmlUca 411 Neyrpfe 900 Rlva 431 Neyrpfe HigbaH-head fronds turblnas Fionnay' Bwtu. 1490 os.too 730 Boehcr Wyas Lirabe | Amtrla I4MV 77,700 300 Basher Wyas Viaatra Norway tseV 99.000 300 Kvatrncr Drug Flaetrpme HKoiipw' No*Italy ISM 70,140 1.000 Bsehcr Wyss way ms 90,000 300 Rvaerner Brag AttWtl 1 (49 71.000 Bsehcr Wyes Ditto Italy ms 14,9)3 1,190 Escher Wyss Roduno Austria 11)0 96,100 300 Bachcr Wyss P,* Under construction; francis; K, k aplan; P. pelton Mont Name Baft-Rhus* Barete Requejsda Rnochctts tovergarry* Potlaphuca Llggx' Hlgheit-head kaplatt turbines ftHead, Output. Speed, Location hp rpm ManufecfctN Prenea Italy Spain Italy Scotland Ireland Sweden 130 31.tOO 199 13,000 191 S.7M 194 3,000 177 19,000 >as 13,000 130 103,030 373 Neyrpfe 1 500 Bather Wra | 300 Bachcr Wyw 1 300 CharmIlk* - ] 330 Bngllah Btecukl 300 Charmilia, wfell Bnglish BfeetihJ 137 Karlstad | Bert Let Orgues Chastang Harspranget Oungtrl KOfarten Llgg** Pragnferes High-powered hydraulie turbines 1 Prance Prance Sweden Manchuria Sweden Sweden Francs 930 U) 344 311137309 J930 134,000 P 133,000 P 133,350 P n1113,,733000 PP 103,030 K 100,000 P 107.3 130 107 113 107 1X3 419 CtiormWn AtatS Chormltka. NrwB 1CHarmtlka, AmB Karlstad Bacher Wyss 1 Karfetad ;1 Rsrlrtad T Neyrpfe 4 Hydro Power Modern Trends in Hydraulic Turbina Do* lgr In Europe. By George A Bowl, Charmilles Engineering ITorks, Geneva, Suritsertand. Modern trends in hydraulic-turbine design in Europe are described, especial* ly how they differ from American prac tice. Even though there has been no major inventions in hydraulie turbines during the last 20 years, mony outsloml* ing units have been built in Europe for exceptionally high heads and of large sixes, as shown in the tables above. These tables are picked (rom extensive ones given in the paper. Hie highest head pelton turbines will be in the Reisaeck plant in Austria, rated 31,000 hp under a 5800-fi head. This is more than double the highest head used in the U.S. For franels type the 63,200-hp units in Fionnay plant In Switzerland will have the highest head, 1490 ft. The 230 ft head of the 31,800 Bort-Rhue kaplan units in France is more than double the highest head used on turbines of this type In this country. The Dorr les Orgues in France has (he largest francis turbines in Europe, 154.000 hp. Design capacity of these units is about the same as for the Crand Coulee units in this country, but the latter operates continuously luaded tn 170.000 hp. ASME paper No, S2-A-92. 194 Mechonlcol Pumps for High*Tompero* lure Liquid Metals, fly Philip M Clerk, Knolls Atomic Power Laboratory, Gen eral Electric Co. As a part of the development of nuclear power for submarine propulsion the General Electric Co designed and built a relatively large hcal*transfer test system in which liquid sodium and liquid sodium-potassium were used as best transfer medio. For this system it was necessary to develop a pump that could circulate about 400 gpm of liquid metal at tem peratures up to 750 F, without leakage at the shaft. But, a small gas leakage could exist. Two identical centrifugal pumps were built and have operated successfully for several thousand hours. A description of the pump design, as sociated seal development and operating experience are presented in this paper. Detailed designs of the (wo pumps were developed In cooperation with the Buffalo Pump Co, where the two pumps were built. Each pump Is a single volute, radial centrifugal design with a 926 specific speed and rated 400 gpm, 126 ft head at 1750 rpm. The pumping ele ments ore contained In a large drain tank filled with inert gas under pres sure, while the supporting bearing and 20-hp, motor are above the floor plate. Sealing the pump against leakage' one of the difficult problems tbit to be solved. Different types of psi were tried, but without complete cess, when the development switched to rotary seols. To ' leokago down to less than 0.1 eo.fl hr both carbon and wear Hop, lapped io less than three light and In most cases to Jess thao.i^ Minute quantities of lubricant Inert; seal life ta more than 2000 hr. paper No. S2-A-94. Development of Special Pumps, 1 Power Supply, Valves, Bearfnp* Instrumentation for Liquid Mslalt-, Edward F BriU, Allis-Chelmers When planning and designing no* power plants the pumps or blowcn circulating coolants through lb* i actors to transfer heat to a power or heal sink require special stitieeoi They must circulate the eoolonl *1' failure, leakage or require mainU^j for long periods. The paper dU*` the several types of ibese pump* have been developed and the a*4, leakless pumps (or high pressor* temperatures. Among the pumps are the lierntd ly sealed designs of which tbf**^ have been built. They are ll ** READER SERVICE SECTION CON EDISON SPECIFIES J-M 85% MAGNESIA RIPE INSULATION FOR MAXIMUM FUEL SAVINGS jga|j rhateriab that went into the new reft!plant addition of New York's lead* jofflja'aad electric supplier...the pipe Mjation-had to be the heil. That's why jofidited Edison Co. specified J-M 8596 najs . industry's No. 1 insulation for Tnttsdo aod still the leader in Its claw. K"fj8596 Magnesia is the leading insula- the market for temperatures up to Eh.1* hooded with asbestos fibers. Hiis I? .iatalaiioo will not distort regard* /th leagth of time it stays in service. jf|96'Magoetia fio snug and stays puL therefore, reoinin constant for Jlfc of the equipment on which this in* u|Sa It applied. Uff, temperatures over 600F, J-M B5% 5A|S**e* is used in combination with ri BgiBSft J'M intulstioo for service to double-layer construction, jSKfl * Superex Combination, eliminates uP?BMoiflit and protects the jacket lt k I**1*1*! the higher heat resistance of Superex next to the hot surface, and the greater insulating value of J*M 8996 Magnesia for the outer layer. Experience has proved that all insula tions must be properly Installed to pay maximum dividendv That's why Johns- ' Manville offer* Industry the services of ex perienced insulation engineers and Installa tion contractors who have made a career of solving complex insulation problems. Prom coast to coast, these engineers and the con tractor's highly skilled mechanics stand ready to combine their talents and give you an insulation job that will more than pay off your initial investment with maximum fuel savings through the years. When you face your next insulating problem... remember that Johns-Manville is "Insulation Headquarters." Consult your near-by J-M Insulation Contractor ... or write direct to Johns-Manville, Dox 60, New`York 16, New York. In Canada, write 199 Day Street, Tbronto I, Ontario. IB Skilled Applicates* oa the team of a J-M Insulation Contractor applying J-M 89% Magnesia io pipelines. Located throughout the nation, these roetractors have had years of experience handling ell types of Installations. They know J-M 8946 Magnesia and other J-M insuledoos as yusJitf products, and take pride la applying them properly. Result! eo insu lation |ob that pays dividends through the years in maximum fuel savings. Phns-Manville first bn INSULATION MATIBIAll INOINIIDINO APPLICATION ^'HltUAaV 193)