发明授权
- 专利标题： Electrically operated valve actuator with electro-mechanical end stop detection device
- 专利标题（中）： 带机电终端检测装置的电动阀门执行机构
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申请号： US13391138申请日： 2010-08-18
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公开(公告)号： US09482359B2公开(公告)日： 2016-11-01
- 发明人: Christian Borchgrevink , Jon Flidh
- 申请人： Christian Borchgrevink , Jon Flidh , Paula Guimaraes , Christopher Flidh
- 申请人地址： NO Sandvika
- 专利权人： Vetco Gray Scandinavia AS
- 当前专利权人： Vetco Gray Scandinavia AS
- 当前专利权人地址： NO Sandvika
- 代理机构： GE Global Patent Operation
- 优先权： NO20092873 20090820
- 国际申请： PCT/IB2010/002041 WO 20100818
- 国际公布： WO2011/021093 WO 20110224
- 主分类号： F16K31/04
- IPC分类号： F16K31/04 ; F16K31/06
摘要：
An electrically operated valve actuator effective for shifting a valve (10) between open and closed positions is disclosed, the valve actuator comprising a movable member in the form of a valve stem (21) connected to a valve body (14), the movable member being driven by an electric motor (22) in linear motion between valve closing and valve opening positions, wherein electrical power to the motor is supplied via a current (25) control including a supplied current detection device. The movable member is designed for an idling length of travel (L) in the opening and closing directions during which the valve (10) is either fully open or fully closed, and the movable member is associated with buffer means (30) that during the idling length of travel gradually increases the torque and power required to move the movable member further in the open and closed positions of the valve (10), respectively.
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