. The Street railway journal . with reasonable fluctuations not more than 2 per 150 lbs. pressure at the throttlfr and condensing with 2 back pressure in the condenser, the turbine will oper-ate at full load on 21 lbs. of dry steam per kw-hour. At halfload, the guaranteed consumption is 23 lbs., and at 50 per centoverload, 211/2 lbs. These guarantees reduced to horse-power [Vol. XXV. No. 5. give lbs. at full load, lbs. at half load and 50 per cent overload. The turbine and generator combinedstand j2 ft. 4 ins. high above the base, and have a diam
. The Street railway journal . with reasonable fluctuations not more than 2 per 150 lbs. pressure at the throttlfr and condensing with 2 back pressure in the condenser, the turbine will oper-ate at full load on 21 lbs. of dry steam per kw-hour. At halfload, the guaranteed consumption is 23 lbs., and at 50 per centoverload, 211/2 lbs. These guarantees reduced to horse-power [Vol. XXV. No. 5. give lbs. at full load, lbs. at half load and 50 per cent overload. The turbine and generator combinedstand j2 ft. 4 ins. high above the base, and have a diameter of7 ft. IS ins. at the base. The weight of the combined unit is40,000 lbs. It sets on a brick foundation, which extends intothe basement underneath. An opening»in this permits the re-moval of the step bearing. A pressure oiling system is pro-vided for the bearings. Two special duplex, outside packed,plunger pumps, shown in Fig. 11, force the oil from a storagetank into a high-pressure piping system of iy2-m. brass FIG. 8. -CHUTES FROM BUNKERS IN BOILER ROOM Through y&-m outlets this system supplies the top bearing andthe step bearing of the turbine. After passing through thebearings, the oil returns by gravity to the storage tank. Theoil is maintained at a pressure of 180 lbs. The high-pressuresystem is connected with what is termed an accumulator, thebase of which is shown to the left of the oil pumps. This as-sures the pressure being kept constant, and also gives a reserve
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
