| 摘要 |
A pipeline leak detector comprising a cylindrical housing which is propelled through a pipeline by the flow of fluid therein. An infra red scanning means disposed in the housing for collecting infra red emission from the inner walls of the pipe, an optical focusing means in communication with the scanning means for focusing the infra red emission on a cryogenically cooled detector which is also disposed within the housing. Converter means converts the infra red emission into an electrical voltage which is directly proportional to the frequency of the emission. A continuous recording means is operably connected to the detector means for recording the voltage output thereof, whereby the temperature differential caused by fluid escaping from a pipeline leak is recorded for subsequent determination of the location of the leak.
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