Pipeline Leakage Monitoring Method and Device
A pipeline leakage and monitoring device technology, applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problem of not being able to know the exact location of the leakage point on the pipeline
Active Publication Date: 2018-11-16
PETROCHINA CO LTD
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Problems solved by technology
[0004] However, the current transmission pipeline monitoring technology cannot know the exact location of the leakage point on the transmission pipeline
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[0033] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0034] figure 1 It is a schematic flow chart of a pipeline leakage monitoring method provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the pipeline leakage monitoring method provided in this embodiment includes:
[0035] S101. Collect the flow and pressure at the head and end of the pipeline.
[0036] Specifi...
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The invention provides a pipeline leakage monitoring method and device. The pipeline leakage monitoring method includes: acquiring the flow and the pressure of the head end and the tail end of a pipeline; determining if pressure curves of the head end and the tail end of the pipeline have inflection points or not when inflection points of the pressure curve of the head end or the tail end of the pipeline appear, and recording a time difference between the first time that the inflection point of the pressure curve of the head end of the pipeline appears and the second time that the inflection point of the pressure curve of the tail end of the pipeline appears if the pressure curves of the head end of the tail end of the pipeline have the inflection points; and determining a distance between a leakage point and the head end of the pipeline or the tail end of the pipeline according to the time difference and the spread speed of pressure wave of liquid in the pipeline. The method can complete accurate positioning of the leakage point of the pipeline according to the change of the flow of the two ends of the pipeline and the time difference of the inflection points of the pressure curves.
Description
Technical field [0001] The invention relates to petroleum pipeline technology, in particular to a pipeline leakage monitoring method and device. Background technique [0002] When oil or natural gas is collected and transported in the oil field, it is difficult to rely on manual management due to the long transmission pipeline. Natural damage or man-made damage can cause perforation or fracture of the pipeline. If it is not detected and treated in time, it will not only affect production, but also cause a series of negative consequences such as a large amount of oil leakage and environmental pollution, causing huge economic losses. Therefore, it is necessary to monitor whether there is leakage in the oil and gas pipeline. [0003] At present, the existing oil field transmission pipeline monitoring technology is to install flow meters or pressure sensors at both ends of the transmission pipeline. When leakage occurs in a certain section of the pipeline between the two ends of the t...
Claims
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IPC IPC(8): F17D5/02
Inventor 程世东魏小林张春涛操红梅李丽樊晨黄天虎邱奇李明江邱亮张彬田殿龙白晓红
Owner PETROCHINA CO LTD