Pipeline gas leakage detection device and detection method thereof

Abstract

The present invention provides a pipeline gas leak detection device and a detection method thereof. The detection device includes a leaked gas collection device and a sensor module arranged inside the leaked gas collection device. The leaked gas collection device is provided with an air inlet and a sensor module. The air outlet is controlled to be opened and closed by a solenoid valve, and the sensor module includes a gas pressure sensor, a signal acquisition device and a signal output device; the method is: start the solenoid valve to open the air outlet, and the sensor module detects Obtain the initial gas pressure and record it as p0; close the solenoid valve, after time Δt, the sensor module starts, and the current gas pressure is detected as p1; if p0=p1, there is no gas leakage. The invention provides a pipeline gas leakage detection device with strong practicability, low cost and high safety factor, and also designs a simple and effective detection method, which can quickly and effectively detect the gas leakage at the interface flange of the gas transmission pipeline.

Description

technical field [0001] The invention relates to a gas leakage detection device, in particular to a pipeline gas leakage detection device capable of detecting gas leakage at a gas pipeline interface and a detection method thereof. Background technique [0002] In petroleum refining and chemical enterprises, there are a large number of pipelines that transport flammable, explosive, toxic and harmful gases. Due to the different lengths and diameters of the pipelines, flanges are mostly used at the pipe sections that need to be disassembled frequently and where the pipelines are connected to equipment. connect. The flange sealing effect is mainly to make the flange gasket have sufficient sealing pressure by tightening the bolts to prevent gas leakage and achieve sealing. [0003] In the process of gas transmission, the sealing performance of the flange will be affected by various factors, which mainly include: insufficient or uneven pre-tightening force of the bolts at the flan...

AI Technical Summary

Problems solved by technology

If the flange leakage problem cannot be detected in time and corresponding measures are taken, the leakage will expand rapidly under the washing of the medium, causing various losses

If it is poisonous, harmful, flammable and explosive gas leakage, it may also cause major safety accidents such as personnel poisoning, fire, explosion, etc.

[0004] In view of the above situation, since the existing pipeline gas leakage detection adopts pipeline inspection, it is easy to miss the detection of small leakage points. Therefore, it is necessary to adopt more effective detection methods and devices

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