. The steam-engine and other heat-motors . nsers. Forinstance, cases have occurred in which the water inside of the con-denser acquired a gyratory motion and then, rising over 34 highin the condenser, flooded through the engine exhaust-pipe, causingthe breakage of the cylinder-head. When this type receives alarger amount of steam than usual, the current of steam and watermay reverse and flood the air-pump. If the bottom of the dis-charge-pipe becomes uncovered, air enters and, forming ascendingpistons, lifts the water (as in the Pohle air-lift in wells) and maycause the flooding of the cylinde
. The steam-engine and other heat-motors . nsers. Forinstance, cases have occurred in which the water inside of the con-denser acquired a gyratory motion and then, rising over 34 highin the condenser, flooded through the engine exhaust-pipe, causingthe breakage of the cylinder-head. When this type receives alarger amount of steam than usual, the current of steam and watermay reverse and flood the air-pump. If the bottom of the dis-charge-pipe becomes uncovered, air enters and, forming ascendingpistons, lifts the water (as in the Pohle air-lift in wells) and maycause the flooding of the cylinder. As the passageway for the airto the pump may be very much constricted by water, amplepassageway should be allowed. The spray-tubes are very liableto become choked, and the injection-pipe should deliver into a teeon the sprayer, so that by the removal of two blank flanges the lat-ter may be easily cleaned (Fig. 262). Condensers of this characterare used in connection with vacuum-pans and multiple effects in COXDEXSERS AXD AIR-PUMPS. 237. ? ? FlG. 125.— Induced Circulation Counter-current Condenser. 238 THE STEAM-ENGINE AND OTHER HEAT-MOTORS. sugar-houses, condensed-milk factories, and in chemical industrieswhere there is much boiling done at pressures less than atmosphericpressure.
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