. American engineer and railroad journal . thence to the boiler. The fire-heater is, therefore, en-tirely filled with water, which is in contact with its heating sur-faces for a period of time equal to that required for the consump-tion of a volume of water in the boiler equal to the contents of theheater. No netting is shown in the smoke-box, but should it be needed itcould be placed in the supplementary smoke-box, 6, as indicated atg ft, and also below the door 1 1 in the smoke-box. To provide for the contingency of the failure of the heater by thebursting or collapse of a tube or pipe, or o
. American engineer and railroad journal . thence to the boiler. The fire-heater is, therefore, en-tirely filled with water, which is in contact with its heating sur-faces for a period of time equal to that required for the consump-tion of a volume of water in the boiler equal to the contents of theheater. No netting is shown in the smoke-box, but should it be needed itcould be placed in the supplementary smoke-box, 6, as indicated atg ft, and also below the door 1 1 in the smoke-box. To provide for the contingency of the failure of the heater by thebursting or collapse of a tube or pipe, or other cause, and to pre-veni the engine fiom being disabled thereby, the feed pipes are con-nected to a four-way valve or cock, 44, Fig. 1. The feed pipe 30 isconnected with the pump or injector; 30 is a continuation of the feedpipe, and is connected to the exhaust-beater; 40 is a delivery pipe,and connects the fire-heater with the valve 44, and 41 connects itwith the cheek valve 41. The valve 44 is provided with a plug, 45, FIG. II. T/a? which, when the heater is in condition to work, is set in the po-sition in which it is represented. The feed-water can limn flow, asindicated by the arrows, from the pump or injector through thepipe 30 and the passage in the valve 44 to the pipe 30, and thenceto the exhaust-heater; the course through that has already beenexplained. After passing through it, it enters the fire-heater, asdescribed, and escapes at its top through a connection. 39, and thepipe 40 to the valve 44, and through the passage shown to thecheck valve 41, and thence to the boiler. In case of the failure ofany part of the heater, so that it would be necessary to shut off thewater from it, the plug 45 of the valve 44 would he turned into theposition represented by dotted lines. The water would then flowfrom the pump through the pipe 30 and the passage in the to the check valve and boiler, and the pipes 30 and 40would be shut off from it. At the same time
Size: 1417px × 1764px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
