Method and apparatus for improving the efficiency of centrifugal

Details Method and apparatus for improving the efficiency of centrifugal Method and apparatus for improving the efficiency of centrifugal

1986-11-17

1988-04-26

Schwartz, Larry I.

Rotary kinetic fluid motors or pumps

With pump recirculation passage control responsive to...

415 53R, 415 27, F04D 106

Patent

active

047401370

ABSTRACT:
The pump system provides for a more efficient operation of multistage centrifugal pumps operating at less than designed capacity. The system includes a flow meter located in the inlet conduit to the pump, a control valve is located in a discharge conduit that extends from the discharge of the first stage of the pump to the inlet conduit, and a connection between the flow meter and control valve whereby the control valve will open to bypass liquid from the first stage discharge to assure that flow through the first stage is greater than the value wherein the internal recirculation occurs. Thus, the pump is capable of circulating a substantially greater amount of liquid through the first stage of the pump when the demand volume at the pump discharge is substantially less than the design value.

REFERENCES:
patent: 1796053 (1931-03-01), Schmidt
patent: 2086806 (1937-07-01), Hollander
patent: 3168870 (1965-02-01), Hornschuch
patent: 4149825 (1979-04-01), Grennan

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