发明名称 |
Actuator for well-head valve or other similar applications and system incorporating same |
摘要 |
An electrically actuated valve and an electrical actuator (10) particularly suited for driving a valve are proposed for regulating a flow. The electrical actuator may include a gear reduction train (76), a brake (78) and a manual input override with clutch protection (80). The electrical actuator can be configured in three different operational modes that provides a predetermined position upon power loss including fail-bias fixed, fail open and fail bias closed. The electrical actuator can be driven for example by using the existing local power supply in wellhead valve systems, typically a solar panel (24) and a battery (26).
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申请公布号 |
EP2258921(A1) |
申请公布日期 |
2010.12.08 |
申请号 |
EP20100171742 |
申请日期 |
2004.01.08 |
申请人 |
WOODWARD, INC. |
发明人 |
GREEB, KEVIN E.;STEWART, JEFFERY T.;SWEER, GRANT A.;KLECKLER, JOEL W.;HYBECK, ROGER T. |
分类号 |
E21B34/02;E21B33/03;E21B34/16;E21B43/14;F16K31/04;F16K31/05 |
主分类号 |
E21B34/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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