发明名称 |
DAMPER STRUCTURE FOR A SEALED DERRICK |
摘要 |
Provided is a damper structure for an enclosed derrick, which can constantly compensate and maintain a pressure of an inner space of an enclosed derrick structure. The damper structure for the enclosed derrick includes: one or more communication ducts installed in a side of the enclosed derrick; and one or more open/close dampers coupled to the communication ducts to open or close the communication ducts, whereby air is selectively supplied to or exhausted from the enclosed derrick.
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申请公布号 |
US2013277062(A1) |
申请公布日期 |
2013.10.24 |
申请号 |
US201113881369 |
申请日期 |
2011.06.22 |
申请人 |
CHOO KEUM DAE;BRITTIN D. SCOTT;TRANSOCEAN SEDCO FOREX VENTURES LIMITED;DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD. |
发明人 |
CHOO KEUM DAE;BRITTIN D. SCOTT |
分类号 |
E21B15/02;B63J2/02;F24F11/00 |
主分类号 |
E21B15/02 |
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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