High-sensitivity intelligent fuel gas leakage alarm control system

Abstract

The invention discloses a high-sensitivity intelligent liquefied petroleum gas leakage alarm system. The system comprises a shell, a core control module, a micro-flow sensor, an in-place detection module, a warning module, an NB-IoT module, a valve driving module, an electromagnetic valve, a power supply module and a safety management platform. The shell is used for connecting the pressure reducing valve and the fuel gas rubber pipe and protecting all the modules. A connecting pipeline is arranged in the shell, the two ends of the connecting pipeline are matched with a connector of the pressure reducing valve and a connector of the fuel gas rubber pipe respectively, and the connecting pipeline is made of non-conductive materials. The micro-flow sensor, the in-place detection module, the core controller, the valve driver, the electromagnetic valve, the NB-IoT module and the power module are installed in the shell, and the warning module is located outside the shell. The core control module judges whether leakage exists or not by calculating the accumulated gas amount, and the service life is greatly prolonged through the anti-pollution capacity of the sensor and the low-power-consumption mode of the core control module and the NB-IoT module.

Description

technical field [0001] The invention belongs to the field of gas leakage alarm equipment, in particular to a high-sensitivity intelligent liquefied petroleum gas leakage alarm system. [0002] technical background [0003] Fire, explosion, poisoning and other safety accidents caused by household gas equipment have emerged in an endless stream in the development of modern society, causing great harm to the country, society and individuals. The vast majority of gas accidents are caused by leaks, therefore, the importance of leak alarms in residents' lives has always been high. At present, the gas leakage alarms on the market all trigger the alarm by detecting the gas concentration in the air through the gas concentration sensor. The gas leakage alarm based on the gas concentration sensor has the following two disadvantages: first, in the case of ventilation, the gas concentration in the air cannot reach the level of triggering the alarm, resulting in waste of gas; second, the ...

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Problems solved by technology

The gas leakage alarm based on the gas concentration sensor has the following two disadvantages: first, in the case of ventilation, the gas concentration in the air cannot reach the level of triggering the alarm, resulting in waste of gas; second, the explosion of gas in the air The limit is extremely low, for example, the lower explosive limit concentration of natural gas is 5%, and the lower explosive limit concentration of liquefied petroleum gas is 1.5%. When the gas leakage alarm based on the gas concentration sensor detects danger, the processing time left for the user or the fire department Not much anymore

[0004] Impurities contained in liquefied petroleum gas will contaminate the sensor, causing the sensor to fail, thereby affecting the service life of the product

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