Indoor gas pipeline leakage detection method

Abstract

The invention relates to an indoor gas pipeline leakage detection method and a pressure sensing device for the method. The method comprises the steps that the pressure sensing device is installed in an indoor gas pipeline of a gas consumer; a corresponding inlet main valve is closed, the pressure sensing device detects the pressure in the indoor pipeline, and when the indoor pipeline pressure is lower than or higher than a set value, a signal is output to lock the gas inlet end of an inlet pipeline. The pressure sensing device is connected with a control center through telecommunication and gives an alarm to the control center, and the control center outputs the control signal to lock the gas inlet end of the inlet pipeline. Or the pressure sensing device directly communicates with the inlet main valve, and the gas inlet end of the inlet pipeline is locked by the inlet main valve. According to the method, the problem that a detection device body is low in sensitivity or the detection sensitivity is influenced by external factors is effectively avoided, the reliability is high, the leakage condition of a gas pressure reaction can be monitored in real time, and small leakage can be found in time.

Description

technical field [0001] The invention relates to the field of gas safety detection, in particular to a gas pipeline leakage detection method realized by adopting a pressure detection method. Background technique [0002] Gas has been rapidly developed and popularized in my country, the number of gas users has increased dramatically, and the probability of gas accidents has also increased significantly. In recent years, gas accidents have emerged in an endless stream in our country, which has brought great threats to people's physical and mental health and property safety. Government departments and local gas companies have issued policies and management systems, which require household gas users to close indoor gas valves when not in use to prevent gas accidents caused by aging and damage caused by gas leakage. There are also cities that require the installation of gas leak alarms. [0003] Existing household gas leakage alarms all adopt the induction of leaking gas and giv...

AI Technical Summary

Problems solved by technology

[0003] Existing household gas leakage alarms all adopt the induction of leaking gas and give an alarm. This gas leakage alarm has the following disadvantages: A, gas leakage alarm device, the design principle is to sense leakage gas by gas sensor, It is required that the leakage gas reaches a certain concentration before the sensor can sense and send out a signal; B. The charged alarm device itself is a source of danger in the case of gas leakage; C. The leakage alarm often has false alarms; D. Gas The sensor has high quality requirements, and a qualified inspection agency must conduct inspections every year to confirm whether it is effective

The gas company has a heavy workload. If it is not inspected every year, it is uncertain whether the sensor is normal, which will cause huge hidden dangers to users and the gas company; E. Leakage alarms are greatly affected by the environment and have low reliability. just the difference in size

G. Small leakage, gas sensor, difficult to sense

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