. The street railway review . s, the water willaverage as high as the pumps, while for a portion of the yearthe water level will be way above the pumps, ft may even go ashigh as the elevation of the condenser outlets at the main station, JlNE 20, 1904.] STREET RAILWAY RE\IEW. 381 £or this was the flood elevation of May 31, 1903, and in this casethe pumps will simply have to work against the friction head dueto the length of pipe and passage through condensers in keeping upa circulation. All pump discharge pipes have easy bends as Hieyleave the pumps and at the tees on the main discharge. At th
. The street railway review . s, the water willaverage as high as the pumps, while for a portion of the yearthe water level will be way above the pumps, ft may even go ashigh as the elevation of the condenser outlets at the main station, JlNE 20, 1904.] STREET RAILWAY RE\IEW. 381 £or this was the flood elevation of May 31, 1903, and in this casethe pumps will simply have to work against the friction head dueto the length of pipe and passage through condensers in keeping upa circulation. All pump discharge pipes have easy bends as Hieyleave the pumps and at the tees on the main discharge. At thetop of each pipe near the tees are gate valves, which not only servethe purpose of shutting off each pump from the main line, butof holding the main supply pipe full or i)rimed during a completeshut-down of the pumping station, or the cutting out of any pumpor other valve for repairs. Midway up the pump chamlier is a platform with iron floor grat-ings, and the beams of this floor carry also the iuternicdlate shaft ■ FIG. ;-DAMPKR MECHANISM iFLfE OIKNING Cxi ET.) bearings which occur near the intermediate couplings. All pumpchamber partition walls have doorways at this level which alloweasy access for the operators without use of ladders. Just underthe main floor General Electric shaft couplings are used,supported by bearings both below and on the motor. At the topof each motor frame are thrust bearings, which arc automaticallyoiled from an oil pan on lower frame by centrifugal force. Ihemotors are of the G. E. induction type K, three-phase, 25 cycle,440 volts, and of two sizes, 125 ad 75 kw., both running at .175r p m. The motor feet and shoes under them are provided withset screws to facilitate perfect alignment of motor and pump shafts,both vertically and horizontally. The compensators and switchesare located at the west end of the station in a recess providedtherefor, under which is a wire connection chamber entirely sep-arate from all water chamber
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
