Buckling pin actuated, pilot operated pressure relief valve
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United States of America Patent
Stats
-
Dec 4, 2001
Issued Date -
N/A
app pub date -
Nov 17, 1999
filing date -
Mar 17, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides a method, apparatus and system for using sacrificial buckling pin technology for a reliable actuated safety relief valve and for a pilot valve system. The buckling pin fails at a predicted, predetermined system pressure through transfer of force exerted by the system pressure on a sensing piston or diaphragm to the buckling pin. The buckling pin failure triggers the release of a latch mechanism that releases the actuator assembly to slide away from the valve seat to initiate relief flow. The use of the buckling pin as a trigger for release of a latch provides for valves with high flow rates without the use of large, unmanageable buckling pins. The use of a buckling pin valve as a pilot valve to control a single or multiple relief valves operating together as a pressure relief system is preferred as particularly advantageous.
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