发明授权
US08601858B2 Method for testing a mechanical integrity of an insulating layer covering a conductor in a cable
有权
用于测试覆盖电缆中的导体的绝缘层的机械完整性的方法
- 专利标题： Method for testing a mechanical integrity of an insulating layer covering a conductor in a cable
- 专利标题（中）： 用于测试覆盖电缆中的导体的绝缘层的机械完整性的方法
-
申请号： US12735067申请日： 2008-12-10
-
公开(公告)号： US08601858B2公开(公告)日： 2013-12-10
- 发明人: Jacques Côté , Paul J. Caronia , Janislaw Tarnowski , André Gaudreau , Mircea Iordanescu , Roger Paquette
- 申请人： Jacques Côté , Paul J. Caronia , Janislaw Tarnowski , André Gaudreau , Mircea Iordanescu , Roger Paquette
- 申请人地址： US MI Midland CA Montreal, Quebec
- 专利权人： Union Carbide Chemicals & Plastics Technology LLC,Hydro-Quebec
- 当前专利权人： Union Carbide Chemicals & Plastics Technology LLC,Hydro-Quebec
- 当前专利权人地址： US MI Midland CA Montreal, Quebec
- 代理机构： Muirhead and Saturnelli, LLC
- 国际申请： PCT/CA2008/002150 WO 20081210
- 国际公布： WO2009/076750 WO 20090625
- 主分类号： G01M3/26
- IPC分类号： G01M3/26
摘要：
A method for testing a mechanical integrity of an insulating layer covering a conductor in a cable, a longitudinal void being defined inside the insulating layer in a region of the conductor. A first end of the insulating layer is blocked. A compressed gas is injected at a second end of the insulating layer so that the gas enters and travels the longitudinal void inside the insulating layer towards the first end. A gas pressure inside the insulating layer is measured at least near the second end. Injection of the compressed gas is stropped after a predetermined injection time period. A variation of the gas pressure inside the insulating layer is monitored during a diagnostic time window succeeding to a transitional time period following the stopping of the injection. Integrity of the insulating layer is determined based on the variation of the gas pressure during the diagnostic time window.