- 专利标题： Pneumatically drivable valve actuator and method of locking a valve closure element relative to a valve body
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申请号： US14372441申请日： 2013-01-18
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公开(公告)号： US09746100B2公开(公告)日： 2017-08-29
- 发明人: Karsten Aldmo , Per Lundqvist
- 申请人： NAF AB
- 申请人地址： SE Linköping
- 专利权人： NAF AB
- 当前专利权人： NAF AB
- 当前专利权人地址： SE Linköping
- 代理机构： Magleby, Cataxinos & Greenwood, P.C.
- 优先权： SE1250033 20120120
- 国际申请： PCT/SE2013/050028 WO 20130118
- 国际公布： WO2013/109184 WO 20130725
- 主分类号： F16K35/06
- IPC分类号： F16K35/06 ; F15B15/14 ; F15B15/26 ; F16K31/122
摘要：
The present disclosure provides a pneumatically drivable actuator for setting a position of a valve closure element in a valve, comprising a piston, which is moveable in a pressure chamber by influence of a drive gas, and a locking mechanism for mechanically locking the piston relative to the pressure chamber. The actuator further comprises a ventilation device for venting the drive gas from the pressure chamber while the piston is mechanically locked relative to the pressure chamber, such that pressurization of the pressure chamber is prevented.A method of locking a valve closure element relative to a valve body of a valve that is controllable by a pneumatically driven actuator is also disclosed.
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