Acoustic method for detecting leaks from submerged pipelines
Method and means of passive detection of leaks in buried pipes
Method of detecting a leakage of fluid
Acoustic emission leak source location
Acoustic emission leak simulator
Temperature compensated methods for detection of leaks in pressurized pipeline systems using gas controlled apparatus
Method for locating leaks in a fluid pipeline and apparatus therefore Patent #: 5272646
ApplicationNo. 959143 filed on 10/09/1992
US Classes:702/51, Leak detecting73/40.5A, Using acoustic detectors73/592, Fluid, fluid leak, or pipe flaw detection702/54Acoustic or vibration sensor
ExaminersPrimary: Voeltz, Emanuel T.
Assistant: Stamber, Eric W.
Attorney, Agent or Firm
International ClassesG01M 003/24
AbstractAn apparatus and process for determining the existence and location of a leak in an underground pipe, comprises a plurality of remote acoustic transmission sensor units distributed along the pipe and each containing equipment for analyzing acoustic signals from the pipe. The equipment includes a mechanism for identifying acoustic features of the acoustic signals which distinguish the acoustic signals of a leak from ambient acoustic signals. A control unit is connected to each of the remote units and includes additional equipment for further analyzing the signals to determine the proximity of the signal to a particular remote unit and, using the amplitude of the signal and the transmission characteristics of the pipe, determining the location of the leak.