Fluid sensitive shutdown for well pump

Details Fluid sensitive shutdown for well pump Fluid sensitive shutdown for well pump

1977-08-18

1978-10-10

Tolin, Gerald P.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

417 43, 200 612, 200 81R, H01H 3518

Patent

active

041198654

ABSTRACT:
A system for disconnecting an oil well pump driving apparatus from a circuit in the absence of a liquid or the like in a pipeline connected from the pump. A vertical member having a cavity in communication with the interior of the pipeline has vertically spaced differential pressure unit (DPU) inlets. The DPU shuts down the pump motor when there is no liquid in the pipeline.

REFERENCES:
patent: 2550093 (1951-04-01), Smith
patent: 3297843 (1967-01-01), Hoss

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