发明名称 |
sistema submarino acionador de válvula híbrida e respectivo método de operação |
摘要 |
A sub sea valve actuator system including a piston and cylinder assembly and a return spring arranged in an actuator housing, a hydraulic pump and electric motor assembly associated with the piston and cylinder assembly, and hydraulic flow lines for hydraulic medium driving the piston and cylinder in relative displacement against a force of the return spring. The valve actuator system includes a detector configured to detect an end-of-stroke position of the piston and cylinder assembly. The detector includes at least one of: a motor current monitoring circuit unit, a hydraulic medium pressure sensor unit, a position sensor unit, and a linear variable differential transformer unit. An electromechanical arresting mechanism is arranged to be energized for releasably arresting the return spring in a compressed state in result of the detected end-of-stroke position. A method for operation of a sub sea valve actuator system by which an end-of-stroke position for a piston and cylinder assembly in a sub sea valve actuator system can be determined. |
申请公布号 |
BRPI0912642(A2) |
申请公布日期 |
2016.06.21 |
申请号 |
BR2009PI12642 |
申请日期 |
2009.05.12 |
申请人 |
VETCO GRAY SCANDINAVIA AS |
发明人 |
BORCHGREVINK, CHRISTIAN;FLIDH, JON;GRIMSETH, TOM;PETTERSEN, JAN OLAV |
分类号 |
E21B34/04;E21B34/16 |
主分类号 |
E21B34/04 |
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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