. The Street railway journal . four of these groups containing 120 pipes each,and two groups 160 pipes each, all of the groups beingcoupled by copper expansion elbows. In addition to the February t, 1902.] STREET RAILWAY JOURNAL. boilers and economisers, sixteen superheaters have alsobeen supplied, with a guaranteed capacity to raise 10,000lbs. of steam per hour, 100 degs. Fahr. The steam pipes are of mild steel, the main pipe being14 ins. in diameter. The main exhaust pipe is 18 ins. indiameter, the branch exhausts of each engine being 15 diameter. Each pair of boilers is directly conn
. The Street railway journal . four of these groups containing 120 pipes each,and two groups 160 pipes each, all of the groups beingcoupled by copper expansion elbows. In addition to the February t, 1902.] STREET RAILWAY JOURNAL. boilers and economisers, sixteen superheaters have alsobeen supplied, with a guaranteed capacity to raise 10,000lbs. of steam per hour, 100 degs. Fahr. The steam pipes are of mild steel, the main pipe being14 ins. in diameter. The main exhaust pipe is 18 ins. indiameter, the branch exhausts of each engine being 15 diameter. Each pair of boilers is directly connected toone engine, having a longitudinal by-pass provided, so thatany boiler can be connected to any engine. Expansion istaken care of by the introduction of three expansion cop-per bends, each bend consisting of two 10-in. copper pipesfitted with cast-steel boxes. Garvies patent steam andexhaust valves are provided, of the parallel-face type, withrenewable expansion seats. The air pumps and condensers are of the Edwards pa-. GENERATING UNIT tent type. Eight of these pumps have been provided, each being of the three three-throw type, with barrels 21 ins. indiameter, 12 ins. stroke, running at 120 r. p. m., and eachpump being capable of dealing with 18,750 lbs. of steamper hour. As is well known, these pumps have no bucketvalves, and are extremely well adapted for work of thiskind. They are intended to draw condenser water througha 20-in. suction pipe from the adjacent canal, and the dis-charge will be by means of a 40-in. pipe with six outlets tothe canal. Each of the eight pumps are being operatedby a 50 hp electric motor. The following is a list of the contracts entered into forthe supply and erection of machinery, together with namesof the contractors and amounts of their contracts: Eight 775-kw steam dynamos, Mather & Piatt dynamos and Browett Lindley engines £72,000 Sixteen 30-ft. x 8-ft. 6-in. Lancashire boilers and super-heaters, Galloways, Lim 15,200 Sixteen mechanica
Size: 1464px × 1707px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
