Sound wave leakage positioning method based on same-side sensor arrangement

Abstract

The invention discloses a sound wave leakage positioning method based on same-side sensor arrangement. The sound wave leakage positioning method comprises the steps of establishing a leakage positioning model based on sensor same-side arrangement for a to-be-detected pipe section; sound wave sensors are arranged on the same side of the to-be-detected pipe section, and sound wave signals are acquired by the sound wave sensors; operation parameters between the to-be-detected pipe section and the two sensors are acquired, and decay factors between the to-be-detected pipe section and the two sensors are separately calculated according to the operation parameters; and the sound wave signals and the decay factors in the step 2 are substituted into the leakage positioning model to perform leakage positioning. The sound wave leakage positioning method has the beneficial effects that the two sensors are arranged on the same side of the to-be-detected pipe section, so that compared with the mode in the prior art that holes are drilled in the two ends of the pipeline, the danger degree for drilling holes is lowered; and the mode that leakage points are positioned by calculating time differences is not adopted, and only the distances between the two sensors and the tail end or the head end of the to-be-detected pipe section, so that the operability is high, and the safety is high.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline acoustic leakage monitoring, in particular to an acoustic leakage location method based on the arrangement of sensors on the same side. Background technique [0002] At present, there are many leakage monitoring methods that can be applied to oil and gas pipelines. Among them, the acoustic wave method has many advantages compared with the traditional mass balance method, negative pressure wave method, and transient model method: high sensitivity, high positioning accuracy, and false alarms. Low rate, short detection time, strong adaptability; the measurement is the weak dynamic pressure change in the pipeline fluid, which has nothing to do with the absolute value of the pipeline operating pressure; the response frequency is wider, the detection range is wider, etc. [0003] In the research on the leakage detection and location technology of gas pipeline acoustic method, the speed of s...

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Problems solved by technology

[0007] Existing patents seldom involve the leak location method where sensors are arranged at the same end of the pipeline, and the realization of leak location relies more on the arrangement of sensors at both ends of the pipeline, and then picks up the leakage signal. Description, the specific performance is: the sensor is installed at both ends of the pipeline, and the two ends of the pipeline need to be drilled. The drilling of the pipeline in operation increases the degree of danger. positioning, long response time, large investment scale, and low security, all of which reduce the feasibility and applicability of the sonic method promotion

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