. The Street railway journal . e bearing shells with oil under about ij/2-ft. head. This oil iscirculated by a small pump positively driven from a worm gearwhich operates both pump and governor. For facilitating thestarting of the turbine a by-pass around the throttle valve isprovided, which permits the introduction of a small amount oflive steam for warming up the cylinder walls and rotating by-pass is also provided between the first and second stagesof the high-pressure cylinder, which may be opened in case ofloss of vacuum. Full load may then be carried upon the tur-bine, running no
. The Street railway journal . e bearing shells with oil under about ij/2-ft. head. This oil iscirculated by a small pump positively driven from a worm gearwhich operates both pump and governor. For facilitating thestarting of the turbine a by-pass around the throttle valve isprovided, which permits the introduction of a small amount oflive steam for warming up the cylinder walls and rotating by-pass is also provided between the first and second stagesof the high-pressure cylinder, which may be opened in case ofloss of vacuum. Full load may then be carried upon the tur-bine, running non-condensing. This feature also permits an January 30, 1904.] STREET RAILWAY JOURNAL. 165 overload of 50 per cent to be carried while the turbine unit isoperating with the usual vacuum. The generator is of the revolving field type, and deliversthree-phase, 25-cycle current at 400 volts. The speed of Waterper HourPounds per Total 30 30000 Economy Test of 1000 K\ Turbine for Cleveland and Southweste. Data-150 lbs. Steam Premure VacuumOO Bar.) 5 F. Superheat1500 to lii^ Load(Pulll 0 200 400 000 hOO 1000 1200 1-100 1600 1MHJ 2000 2200 LOAD-Klee-triCill Hour Street By. Journal DIAGRAM OF TURBINE TESTS the unit is 1500 r. p. 111., necessitating a two-pole held,which is constructed of annealed steel of the highest ten-sile strength, and has strap copper winding embedded indeep slots and retained by wedges. There are numerousair ducts, providing adequate ventilation. The armaturestationary element is of the usual Westinghouse construction,but its diameter is much less than that of the ordinary slow- shaft, which necessitates its running at the same speed. It isconnected with the general oiling system. To overcome thevariation in voltage of the main generator, due to cumulativeeffect of speed variation of the exciter, Tirrell regulators willbe used in the exciter field. By means of series turns on theregulator these compensate for t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
