Impeller of water ring vacuum pump

The working principle of water-ring vacuum pump The impeller of the water-ring vacuum pump is installed eccentrically in the pump body, and a certain amount of water is injected into the pump as working fluid before starting the water-ring vacuum pump. When the impeller rotates, water is thrown around by the impeller. Because of centrifugal force, water forms a closed water ring with approximately equal thickness, which is determined by the shape of the pump chamber. A closed crescent-shaped cavity is formed on the blade and the side plates at both ends. During the first half rotation, the volume of the closed crescent-shaped cavity gradually expands, and the gas is absorbed by the suction port located there. When the suction ends, the cavity is closed. The cavity is separated from the suction port, and the volume of the closed crescent-shaped cavity is gradually reduced and the gas is contracted during the second half rotation.
When the closed crescent-shaped cavity communicates with the exhaust port, the gas is discharged out of the pump. It can be seen that the water ring vacuum pump relies on the volume change of the pump chamber to achieve aspiration, compression and exhaust. When the working fluid carries the gas sucked from the condenser and discharges from the pump body to the steam-water separator, under the combined action of positive pressure in the separator and negative pressure in the vacuum pump body, the working fluid flows out of the steam-water separator. After cooling by a cooler installed horizontally on one side of the pump body, the working fluid is divided into two channels, which are directly supplemented to the pump body as the working fluid, and condensated through the suction pipe of the pump. The exhausted gas in the steam turbine is cooled and cooled, and enters the pump with the exhausted gas as working fluid. After working in the pump body, it is discharged into the steam-water separator, thus reciprocating cycle.
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