-
公开(公告)号：EP0632258B1
公开(公告)日：1999-08-25
申请号：EP94304749.8
申请日：1994-06-29
-
公开(公告)号：EP0632258A3
公开(公告)日：1995-04-26
申请号：EP94304749.8
申请日：1994-06-29
发明人： Mahoney, David G. , Pflanz, Thomas P. , Ruiz, Glenn E. , Hall, William D. , Farmer, Jack W. , Parson, Roy F.
摘要： A non-helium expansion leak test technique is used to detect large leaks in a test part. The technique does not require the presence of helium or any other trace gas in the part being tested. The non-helium expansion technique is preferably used in conjunction with a helium mass spectrometer leak detector to permit leak detection over a large range of leak rates. A test part is placed in a sealed test fixture, and a valve between the test fixture and an expansion chamber is opened. The pressure in the expansion chamber is measured after the valve is opened. When the measured pressure is less than a reference pressure, a sealed part is indicated. When the measured pressure is greater than the reference pressure, a leaking test part is indicated. When a sealed test part is indicated, a helium mass spectrometer leak test is performed to determine the presence of small leaks in the test part. An atmospheric gross leak test can be performed simultaneously with the non-helium expansion leak test to detect large leaks in situations where some helium remains in the test part at the time of test.
-
公开(公告)号：EP0632258A2
公开(公告)日：1995-01-04
申请号：EP94304749.8
申请日：1994-06-29
发明人： Mahoney, David G. , Pflanz, Thomas P. , Ruiz, Glenn E. , Hall, William D. , Farmer, Jack W. , Parson, Roy F.
摘要： A non-helium expansion leak test technique is used to detect large leaks in a test part. The technique does not require the presence of helium or any other trace gas in the part being tested. The non-helium expansion technique is preferably used in conjunction with a helium mass spectrometer leak detector to permit leak detection over a large range of leak rates. A test part is placed in a sealed test fixture, and a valve between the test fixture and an expansion chamber is opened. The pressure in the expansion chamber is measured after the valve is opened. When the measured pressure is less than a reference pressure, a sealed part is indicated. When the measured pressure is greater than the reference pressure, a leaking test part is indicated. When a sealed test part is indicated, a helium mass spectrometer leak test is performed to determine the presence of small leaks in the test part. An atmospheric gross leak test can be performed simultaneously with the non-helium expansion leak test to detect large leaks in situations where some helium remains in the test part at the time of test.
摘要翻译： 非氦膨胀泄漏测试技术用于检测测试部件中的大量泄漏。 该技术不需要在被测试部件中存在氦气或任何其他痕量气体。 非氦膨胀技术优选与氦质谱仪泄漏检测器结合使用，以允许在大范围泄漏率下进行泄漏检测。 将测试部件放置在密封的测试夹具中，并且打开测试夹具与膨胀室之间的阀门。 阀门打开后测量膨胀室内的压力。 当测得的压力小于参考压力时，指示密封件。 当测得的压力大于参考压力时，指示泄漏的测试部件。 当指示密封的测试部件时，执行氦质谱仪泄漏测试以确定测试部件中是否存在小泄漏。 可以在非氦膨胀泄漏测试中同时执行大气粗漏测试，以在测试时在测试部件中保留一些氦的情况下检测大泄漏。
-
-
搜索结果
3 条记录 (耗时 0.008 秒)
