Indoor gas pipeline leakage protecting method and apparatus

Abstract

The invention provides a gas pipe line leakage protection method comprising steps of: acquiring flame signal of gas kitchen ranges real time; extracting flow capacity information of gas house lead in pipeline real time; shutting down the house lead in gas pipeline and alarming when flow capacity information exist on the gas meter and non flame signal of the gas kitchen ranges in 10-30s. accordingto invention, the device comprises a flame signal capturing module, a control circuit, a normally closed solenoid valve, a flow capacity signal capturing module and a alarm; the control circuit acquires working condition information of the gas kitchen ranges with the flame signal capturing module, flow capacity information of the house lead in pipeline is acquired by the flow capacity signal capturing module, when the flow capacity signal capturing module has flow capacity information and the flame signal capturing module has not potential signal, the control circuit separately sends signal to the normally closed solenoid valve and the alarm. The invention resolves problem that possible leakage of the indoor gas pipe system may carry potential safety hazard, which effectively protects users, and manpower is saved, also operating cost of city gas pipeline is reduced.

Description

technical field [0001] The invention belongs to pipeline gas safety technology, and in particular relates to an indoor gas pipeline leakage protection method and a device thereof. Background technique [0002] At present, there is generally no special safety control device for indoor gas pipelines. The main thing is to add odor to the gas. If there is a leak, it is generally judged by people's sense of smell. However, in many cases, if there is no one at home, a leak will easily cause a major safety accident. The existing anti-leakage technology mainly has the following aspects. One is the leakage alarm or device, which senses the gas leakage through the combustible gas sensitive element. The cost is often too high, and the performance of the low-cost one is often unreliable. In addition, the sampling point position of the sensitive element sometimes cannot effectively sense the leakage, and its safety cannot be guaranteed at all; there is another technology that is over-cur...

AI Technical Summary

Problems solved by technology

[0002] At present, there is generally no special safety control device for indoor gas pipelines. It mainly adds odor to the gas. If there is a leak, it is generally judged by people's sense of smell. However, in many cases, if there is no one at home, it will easily cause a major safety accident.

The existing anti-leakage technology mainly has the following aspects. One is the leakage alarm or device, which senses the gas leakage through the combustible gas sensitive element. The cost is often too high, and the performance of the low-cost one is often unreliable. In addition, the sampling point position of the sensitive element sometimes cannot effectively sense the leakage, and its safety cannot be guaranteed at all; there is another technology that is over-current protection. When falling off, use the principle of a sudden and large increase in gas flow to cut off the gas valve. This technology has great limitations. In many cases, the gas leakage is relatively slow. In this case, the above technology cannot provide effective protection.

At present, in order to strengthen the safety of users' gas consumption, some large gas companies have adopted regular on-site leak detection measures, which have improved the safety of users' gas consumption to a certain extent, but cannot fundamentally solve the problem

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