Hydraulic motor system for driving a submersible impeller pump i

Details Hydraulic motor system for driving a submersible impeller pump i Hydraulic motor system for driving a submersible impeller pump i

1980-07-25

1982-09-21

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Plural paths having individual condition responsive control...

417308, 417390, F04B 4902, F04B 910

Patent

active

043504760

ABSTRACT:
The present hydraulic system for driving a submersible pumping unit has an above-ground pump for pumping oil through a hydraulic motor in the submersible pumping unit which has a gate valve to prevent the reverse flow of water after the submersible pumping unit is turned off. A pressure regulating valve limits the oil pressure to the hydraulic motor. The inlet flow to the above-ground pump is filtered. In the present improvement, the hydraulic surge at start-up and shut-down is cushioned by bypassing hydraulic fluid through an accumulator which causes pressure at the motor in the submersible pumping unit to build-up relatively gradually at start-up and decrease relatively gradually at shut-down.

REFERENCES:
patent: 3297236 (1967-01-01), Eckerle et al.
patent: 4138202 (1979-02-01), Eller

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