On the basic theoretical research of
liquid ring pump, domestic and foreign experts and scholars based on the relevant theory of fluid mechanics, combined with the performance characteristics of liquid ring pump, put forward their own views, and used in practical design.
After detailed analysis of various parameters of liquid ring pump, it is pointed out that in liquid ring pump, the shape and position of suction and exhaust outlet, outlet angle beta of blade and circumferential velocity Mu have great influence on the performance of liquid ring pump. One of the keys to determine the shape of the suction and exhaust windows is to determine the outer boundary of the suction and exhaust windows, and the reasonable design of the outer boundary of the suction and exhaust windows must conform to the law of motion of the liquid ring, that is, to the inner boundary of the liquid ring.
It is assumed that the fluid is an ideal fluid and that the gas pressure acting on the liquid in the impeller is constant during the steady motion of the fluid in a working cycle. The shape of the inner surface of the liquid ring can be determined by the fluid continuity equation of the liquid relative to the radial motion. Both are equal to the liquid flow in the impeller and, for the ideal fluid, the liquid is incompressible, so the gas flow in the impeller must be equal to the liquid flow outside the impeller.
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