发明名称 |
METHOD AND DEVICE FOR SEALING PIPELINE |
摘要 |
<p>A spherical member (10) is advanced by pressure along the interior of a pipeline (12) to seat against a restraining member (14) forming a pressure-tight seal. The advancing pressure may then be increased within the pipeline to monitor for leaks in the upstream section of the pipeline. The spherical member (10) is easily retrieved by back pressuring the downstream section of the pipeline (12) thereby dislodging the spherical member from the restraining member (14). <IMAGE></p> |
申请公布号 |
JPS5794191(A) |
申请公布日期 |
1982.06.11 |
申请号 |
JP19810156051 |
申请日期 |
1981.09.30 |
申请人 |
EXXON PROD RES CO |
发明人 |
AARON ERUZO PIASU;UIN PATAASON RITSUKII |
分类号 |
F16L37/28;F16L37/00;F16L37/38;F16L55/10 |
主分类号 |
F16L37/28 |
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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