发明名称 |
Fremgangsmåte og anordning for innföring av en stiv plugg i et strömningsrör |
摘要 |
<p>There is disclosed a method and a device to allow a "rigid" pig to pass into an undersea flow pipe in which a hollow flow-constricting device is in use. According to the invention the device is provided with a first pipe branch and a second pipe branch. The first pipe branch is provided with a hollow flow-constricting device in it and both first and second pipe branches are provided with shut-off valves, whereby the flow can be diverted to the second pipe branch thereby enabling a rigid pig to pass into such second pipe branch, when necessary.</p> |
申请公布号 |
NO20033374(A) |
申请公布日期 |
2003.10.22 |
申请号 |
NO20030003374 |
申请日期 |
2003.07.28 |
申请人 |
PETROLEO BRASILEIRO SA - PETROBRAS |
发明人 |
ALMEIDA, ALCINO RESENDE DE |
分类号 |
B08B9/04;B08B9/055;(IPC1-7):B08B9/04 |
主分类号 |
B08B9/04 |
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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