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公开(公告)号：US4020674A
公开(公告)日：1977-05-03
申请号：US688071
申请日：1976-05-19
CPC分类号： G01M3/005 , G01M3/2823
摘要： A device for detecting and locating leaks in pipelines through which a stream of fluid flows under pressure. The device includes an elongate body portion providing support for axially spaced sets of plural radially extending baffles, fore and aft of the stream and of a diameter less than the inside diameter of the pipe to be probed; and an intermediate portion including a differential pressure measuring device and recorder which forms with the inner pipe wall, a chamber normally maintained at the stream pressure as the device is propelled through the pipe at the speed of fluid flow. As the device passes a leak fluid pressure in the chamber is reduced due to the substantial isolating affect of the baffles from the up and down stream pressures with a resultant recording indicative of the leak location, while eliminating the need of totally sealing off the chamber.
摘要翻译： 一种用于检测和定位管道中的泄漏的装置，通过该管道流体在压力下流动。 该装置包括细长主体部分，其提供用于轴向间隔开的多个径向延伸的挡板的组件的支撑，所述多个径向延伸的挡板的前部和后部以及小于待探测的管的内径的直径; 以及包括与内管壁形成的差压测量装置和记录器的中间部分，当流体流动的速度通过管道被推进时，通常保持在流体压力下的室。 当设备通过泄漏液体时，由于挡板与上下游压力的实质隔离效应而减小了室内的压力，结果记录表示泄漏位置，同时不需要完全密封室。
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公开(公告)号：US4051714A
公开(公告)日：1977-10-04
申请号：US704547
申请日：1976-07-12
申请人： Harry Robert Fechter , Peter Hood
发明人： Harry Robert Fechter , Peter Hood
CPC分类号： G01M3/246 , G01M3/005 , G01M3/2823
摘要： A method and apparatus for detecting a leak in a pipeline and initiating, at the leak location, a sonic signal in the stream fluid, the signal being of a magnitude and character to be detected at remote upstream and downstream stations for location of the leak by known computations based on the time differential between the arrival times of the signals at the remotely spaced stations.
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