发明名称 |
BALL VALVE SAFETY PLUG |
摘要 |
<p>A ball within a ball valve comprises a ball, an interior fluid passage extending through the ball, a first flow passage disposed in the ball that allows fluid communication between an exterior fluid and the interior fluid passage, a second flow passage disposed in the ball that extends through a wall of the ball to the interior fluid passage, where the first flow passage and the second flow passage are on opposite hemispheres of the ball, and a flow through device. The flow through device comprises a plug disposed in the second flow passage and configured to sealingly engage the ball, and a shear device configured to engage the plug and retain the plug in the second flow passage.</p> |
申请公布号 |
EP2699761(A2) |
申请公布日期 |
2014.02.26 |
申请号 |
EP20120774787 |
申请日期 |
2012.04.17 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
INGLIS, PETER, DEREK, WALTER;DAVIES, KATHERINE, ANN |
分类号 |
E21B33/124;E21B33/12;E21B34/00;E21B34/08;E21B34/10;F16K5/06;F16K15/04;F16K17/40 |
主分类号 |
E21B33/124 |
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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