发明名称 |
Emergency isolation valve apparatus |
摘要 |
An emergency isolation valve has a valve plug in a valve body connected to a pipeline. The valve plug is connected to a valve shaft around which a sector gear is provided and engaged with a rack of a piston rod in a cylinder. The piston rod has a piston at one end and is connected to a compression spring at the other end. The piston is moved by air supplied into a cylinder from a compressed air source via a fluid control and a solenoid selector valve. Air supply stops and a discharge hole of the cylinder is opened, so that air is discharged to the outside. The piston is returned by the compression spring to close the discharge hole. At the same time stop of the piston rod is detected by a sensor thereby checking whether to actuate the valve plug normally even during operation.
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申请公布号 |
US7650905(B2) |
申请公布日期 |
2010.01.26 |
申请号 |
US20050123923 |
申请日期 |
2005.05.06 |
申请人 |
TYCO FLOW CONTROL KABUSHIKI KAISHA |
发明人 |
KUBOTA MOTOHIRO;KUNIEDA WATARU |
分类号 |
F16K31/122;F15B15/22;F16K17/36;F16K31/163;F16K31/54;F16K31/56;F16K37/00 |
主分类号 |
F16K31/122 |
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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