. Electric railway journal . r of theboiler, completing the circulating system. The crosspipe and that portion of pipe which extends over thegrate are directly exposed to the hot flames and gases,thus causing the water to circulate rapidly. Just in front of the bridge wall a baffle wall is con-structed so that the flames will be forced up against theboiler shell at the extreme end of the grate. The airand steam from a header are combined with the gasesat the point where they pass over the bridge wall, asshown in the accompanying illustration, and thus pro-duce better combustion than is possibl
. Electric railway journal . r of theboiler, completing the circulating system. The crosspipe and that portion of pipe which extends over thegrate are directly exposed to the hot flames and gases,thus causing the water to circulate rapidly. Just in front of the bridge wall a baffle wall is con-structed so that the flames will be forced up against theboiler shell at the extreme end of the grate. The airand steam from a header are combined with the gasesat the point where they pass over the bridge wall, asshown in the accompanying illustration, and thus pro-duce better combustion than is possible under ordinaryfurnace conditions. As shown in the elevation of the boiler at the left ofthe illustration, the air inlet to a header, which is closedat one end, is tapped at the ell and a connection is madewith a %-in. steam pipe in the line of which is a globevalve. Steam is injected at the point from a steamdrum or steam line and induces the air flow. This 1310 ELECTRIC RAILWAY JOURNAL Uptake fo Smoke [Vol. XLVIII, No. 26. BoHom cfAsk fit Blowoff Pipe SCHEME FOR OBTAINING COMPLETE COMBUSTION AND RAPID WATER CIRCULATION APPLIED TO A RETURN TUBULAR BOILER, SHOWING PIPING AND PATH OF GASES header, which has approximately the area of a and is inclosed in a firebrick cap, has openingsfacing the bridge wall. It rests on a saddle which sup-ports the baffle wall, the cross pipe being directly belowthe saddle. The edges of the openings in the headerare curved and smooth so that the friction of the airand steam passing through the openings will be amount of air drawn in at the air inlet is controlledby the globe valve in the steam line, and the amountof air and steam which combines with the gases in thecombustion chamber is regulated until a smokeless con-dition of the fire is obtained. A number of reports of tests have been receivedshowing considerable economies obtained in industrialand municipal lighting and power plants where thissystem is in use. According t
Size: 2694px × 928px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
