Method and system for setting alarm threshold for buried gas pipeline leakage

Abstract

The invention discloses a method for setting an alarm threshold for leakage of buried gas pipelines, comprising the following steps: S1, acquiring methane concentration data at monitoring points, population density data at monitoring points, inspection well type data at monitoring points, and calculating monitoring points The methane concentration change rate data, the explosion risk data of the monitoring point, and various data are input to the data processing module; S2, the data processing module processes various data to obtain the alarm risk value; S3, the obtained in step S2 The alarm risk value is input into the gas alarm device, and compared with the alarm threshold embedded in the gas alarm device in the early stage, and the alarm level is output according to the result. The invention also discloses a system for setting the leakage alarm threshold of the buried gas pipeline. The invention has the advantages of making up for the false alarm or late alarm caused by the fixed threshold value of the traditional gas alarm device, and improving the accuracy and timeliness of the gas leakage alarm.

Description

technical field [0001] The invention relates to the technical field of gas pipeline threshold setting, in particular to a method and a system for setting the leakage alarm threshold of buried gas pipelines. Background technique [0002] With the development of cities, gas pipelines are laid on a large scale. However, due to corrosion, construction damage, engineering quality and other reasons, gas pipelines are prone to leakage, and after gas leakage, it is easy to spread to adjacent underground spaces such as drainage and electricity. Under the conditions of the presence of fire sources, it is very likely to cause serious fire and explosion accidents. Since we are mainly doing manual inspections at present, it is difficult to find small gas pipeline leaks in time. Often when we find out, the gas has spread far along the drainage pipes. At this time, it is often very difficult to dispose of them. , the consequences are very serious. [0003] In order to improve the accurac...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical problem of false alarm or late alarm caused by the fixed threshold value of the traditional gas alarm device or the single threshold adjustment factor existing in the prior art, comprehensively considering the methane concentration of the monitoring point and the explosion risk of the monitoring point Influencing factors such as data, methane concentration change rate data at monitoring points, inspection well types at monitoring points, population density at monitoring points, and other influencing factors, the public method and system for setting the leakage alarm threshold of buried gas pipelines make up for the problems caused by the fixed threshold of traditional gas alarm devices. The shortcomings of false alarms or late alarms improve the accuracy and timeliness of gas leakage alarms

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