Fluid handling – Processes – Involving pressure control
Patent
1992-12-02
1993-09-14
Hepperle, Stephen M.
Fluid handling
Processes
Involving pressure control
60329, 92130C, 137468, 1374925, F01B 3100
Patent
active
052440044
ABSTRACT:
A hydraulic pipeline valve operating system (10) includes a tank (12) which holds a quantity of unpressurized hydraulic fluid. A pump (14) provides that fluid under pressure to a valve actuator (11). The valve actuator has an actuator cylinder (40) having a piston (42) which is operatively connected to the pipeline valve (28). The fluid under pressure moves the piston (42) of the cylinder (40) to compress a spring (35) to open the valve (28). When the piston (42) of the cylinder (40) ceases movement, continued pumping moves a piston (53), of a smaller diameter than the piston (42), which also acts against the spring (35). An indicator rod (60) gives a visual indication of the position of the piston (53) and when it is at approximately its midstroke location, pumping of the fluid is terminated and the actuator (11) is set. Should ambient temperature conditions change, the piston (53) moves to accommodate such changes thereby leaving the piston (42) unaffected. When a pressure sensing valve (22) senses a predetermined pressure change in the fluid in the pipeline, a dump valve (23) is opened permitting the pressurized fluid in the system (10) to be transferred back to the tank (12). The spring (35) can thus move the piston (42) to close the pipeline valve (28).
REFERENCES:
patent: 2691518 (1954-10-01), Smith
patent: 2935999 (1960-05-01), Hock et al.
patent: 3073331 (1963-01-01), Faisandier
patent: 3648967 (1972-03-01), O'Neill et al.
patent: 4328672 (1982-05-01), Zumstein
patent: 4685294 (1987-08-01), Mount
Hepperle Stephen M.
The Shafer Valve Company
LandOfFree
Hydraulic pipeline valve operating system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic pipeline valve operating system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pipeline valve operating system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2020814