发明授权
- 专利标题： Pipe inspection systems
- 专利标题（中）： 管道检查系统
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申请号： US896384申请日： 1978-04-14
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公开(公告)号： US4187425A公开(公告)日： 1980-02-05
- 发明人: Carroll R. Thompson
- 申请人： Carroll R. Thompson
- 申请人地址： TX Odessa
- 专利权人： NDT Systems, Inc.
- 当前专利权人： NDT Systems, Inc.
- 当前专利权人地址： TX Odessa
- 主分类号： G01N23/18
- IPC分类号： G01N23/18 ; G01N23/00
摘要：
The disclosed invention involves radioactive inspection of tubular pipe passed rotatively and longitudinally relative to an inspection head. A beam of radiation is directed so as to intersect the pipe along a chord where the intersection is spaced a distance "d" on a horizontal radius from the pipe axis, the distance "d" being approximately 0.6 of the radius of the outer pipe wall. A diametrical beam of radiation can be used for comparison purposes.
公开/授权文献
- US5978391A Wavelength reference for excimer laser 公开/授权日：1999-11-02
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