FULLY INDEPENDENT, REDUNDANT FLUID ENERGIZED SEALING SOLUTION WITH SECONDARY CONTAINMENT
摘要
<p>A redundant sealing system with secondary containment for preventing leakage of fluid along a valve shaft is provided. The system comprises a first set of dynamic seals, a second set of dynamic seals, an auxiliary barrier fluid chamber, and a barrier fluid indicator. The first and second set of dynamic seals are in spaced relation to each other a distance equal to or further than a maximum stroke length of an actuatable valve stem. The auxiliary barrier fluid chamber is interposed between the first and second sets of dynamic seals. The barrier fluid indicator has a piston in a primary barrier fluid chamber. A first face of the piston is exposed to a process fluid. A second face of the piston is exposed to a barrier fluid and inhibited from fluid communication with the auxiliary barrier fluid chamber by a dynamic seal in the first set of dynamic seals.</p>
申请公布号
WO2007064546(A1)
申请公布日期
2007.06.07
申请号
WO2006US45209
申请日期
2006.11.22
申请人
WOODWARD GOVERNOR COMPANY;STUMBO, STEVEN, CHARLES;GREEB, KEVIN, E.;BURDICK, WADE, A.
发明人
STUMBO, STEVEN, CHARLES;GREEB, KEVIN, E.;BURDICK, WADE, A.