. The Street railway journal . d. All cast iron used in the fittings is called air-furnace iron,which is a semi-steel and tougher than ordinary iron. Allfittings are heavier in their proportions than ordinary practice,and all are of special design. All line and bent pipe is of wroughtiron, and the flanges are loose and made of wrought steel,which was rolled by Krupp, of Essen, Germany. The shell ofthe pipe is bent over the face of the flange, according to the matter for expansion and contraction required for superheatedsteam. FEED-WATER PIPINGThe feed-water will enter the building at three poi
. The Street railway journal . d. All cast iron used in the fittings is called air-furnace iron,which is a semi-steel and tougher than ordinary iron. Allfittings are heavier in their proportions than ordinary practice,and all are of special design. All line and bent pipe is of wroughtiron, and the flanges are loose and made of wrought steel,which was rolled by Krupp, of Essen, Germany. The shell ofthe pipe is bent over the face of the flange, according to the matter for expansion and contraction required for superheatedsteam. FEED-WATER PIPINGThe feed-water will enter the building at three points, thelargest water service being 12 ins. in diameter, which entersthe structure at its southeast corner. The water first passesthrough fish traps and thence through meters, and from themto the main reservoir tanks, arranged along the center of theboiler house basement, flowing into each tank by means of anautomatic float valve. The water will be partly heated in thesereservoir tanks by means of hot water discharged from the. PLAN OF ONE OF THE MAIN GENERATING UNITS, SHOWING ARRANGEMENT OF THE STEAM PIPING THROUGHOUT special Walworth practice. All the joints in the main steamline above ins. in size are ground joints, metal to metal,no gaskets being used. Unlike the flanges ordinarily used in this country, specialextra strong proportions have been adopted, and it may he saidthat all flanges and bolts used in same are 50 per cent heavierthan the so-called extra heavy proportions used in this country. Before the design of the valves was attempted, informationwas obtained from abroad with respect to the qualificationsneeded in valve construction for superheated steam, and certaindepartures were made in the design and materials used for thevalves in question. Special attention was also given to the high-pressure steam traps—in this way heat represented in thedrainage from the high-pressure steam is, for the mostpart, returned to the boilers. From the reservoir tanks th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
