Control system for the suction line relief valve of a hydraulic dredge
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United States of America Patent
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-
Feb 20, 1996
Grant Date -
N/A
app pub date -
Aug 23, 1994
filing date -
Aug 23, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control system for the suction line relief valve of a hydraulic dredge is disclosed. The system includes a relief valve actuator which is hydraulically operated; a hydraulic pump powered by a motor; a directional valve; an energy storage device; and hydraulic lines connecting the hydraulic pump, the accumulator, and the relief valve actuator. The accumulator converts the hydraulic pressure in the hydraulic lines into potential energy which is used to generate hydraulic pressure if the pump fails or loses power. The pressure generated is enough for the operator to move the relief valve actuator which will reposition the relief valve to a desired position after pump failure.
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