. The Street railway journal . ovided with a suitable valve. Thedischarge from the condensers is carried through a into the discharge tunnel. In order to maintain a posi-tive vacuum in the condensers, each is supplied with a dryvacuum pump and with condensing water at a tempertureof 70 degs. F. they are capable of maintaining a vacuum of28 ins. The condensers each have a capacity of 15,000 steam per hour; all piping for these condensers is lo-cated below the turbine room floor with the exception of theair-discharge line from the dry pumps. HEATERS In the boiler room adjacent
. The Street railway journal . ovided with a suitable valve. Thedischarge from the condensers is carried through a into the discharge tunnel. In order to maintain a posi-tive vacuum in the condensers, each is supplied with a dryvacuum pump and with condensing water at a tempertureof 70 degs. F. they are capable of maintaining a vacuum of28 ins. The condensers each have a capacity of 15,000 steam per hour; all piping for these condensers is lo-cated below the turbine room floor with the exception of theair-discharge line from the dry pumps. HEATERS In the boiler room adjacent to thefeed-water heaters, there has been in-stalled a 2000-hp Bonar vertical open heater, throughwhich exhaust steam from all the auxiliaries special arrangement of piping has been provided bywhich the steam can be by-passed around the heater inthe event of its being desired to clean or repair it. The ex-haust from each steam turbine is taken care of by an supplied with suitable check valves. These pipes in. HIGH-TENSION SWITCHING APPARATUS AND LIGHTNING ARRESTERSIN POWER HOUSE The live steam lines are connected to the Holly systemfor the extraction of the condensed steam in these pipes,and to effect its return to the feed-water heater. The trapis located in the condenser room, while the reservoir, forsecuring sufficient head, is located above the boilers. Inlike manner, the exhaust piping is provided with returns toa Bundy trap, placed in the condenser room which pro- August io, 1907.] STREET RAILWAY JOURNAL. 213 vides for the return of the condensed steam to the Bonarheater. FLANGES AND VALVESAll of the live steam piping in this plant is of extra heavysteel, provided with male and female flanges screwed andpeened. The low-pressure piping, as well as pipes convey-ing the water supply, are of cast iron with standard valves are used throughout. TURBINES The steam plant at present, as illustrated in the engrav-ing, consists of two 1125-hp multi
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
