Gas home-entry facility double-control emergency safety protection method and double-control safety protection system thereof

Abstract

The invention provides a double-control emergency safety protection method and a double-control safety protection system for a gas home-entry facility. According to the double-control emergency safety protection method for the gas home-entry facility, a gas leakage protection method and a combustion timing control method are combined to form the double-control emergency protection method, the gas leakage protection method controls a normally-open master control valve of a main pipeline through leakage induction, protection of closing gas conveying and supplying when the gas concentration is abnormal is implemented, and meanwhile the combustion timing control method is combined to control the gas leakage protection method. When the working timing is ended, the master control valve is automatically closed, the gas supply is cut off, and the gas use safety is ensured. The double-control safety protection system at least comprises a system module, and the system module comprises a valve execution loop, a gas leakage protection unit and a combustion timing control unit. According to the technical scheme, the technical purpose of uninterrupted and all-around safety monitoring protection is truly achieved, and the gas safety protection device can be widely applied to gas safety protection in catering industry, resident families and the like.

Description

technical field [0001] This patent application relates to the safety protection implementation method and safety protection implementation device of gas transportation and use, especially relates to the urban gas / canned liquefied petroleum gas delivery and fuel safety protection method and its protection system device. Background technique [0002] The gas is transported into the household and connected to the pipelines of various indoor burning appliances. There are many safety hazards, such as pipeline gas leakage, flames becoming smaller and extinguished or extinguished, and explosion accidents caused by malicious opening of manual gas valves. At present, there are two main safety protection methods for gas transmission and use of gas appliances: one is the gas leakage monitoring and protection method. According to the technical specifications of "Gas Alarms and Sensors for Household and Small Catering Kitchens" (National Standard GB / T34004-2017) and "Electromagnetic Gas ...

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Problems solved by technology

[0004] Looking at the various gas protection technical means above, the protection mode of the emergency cut-off valve of the gas pipeline is only for emergency shutdown protection when the gas leaks, but when the detection device fails, when there is a power failure, or when the manual valve of the large indoor space is far from the combustion appliance, the manual valve cannot be closed. When it is severe, it is difficult to play its protective role; and the function of flameout protection is an emergency protection method through flame detection, which cannot play a protective role against the leakage with the highest occurrence rate other than burning appliances, that is, the combination of the two with a single protection function is a complete set The gas protection system is difficult to superimpose and coordinate with each other, and the system protection loopholes are also a combination of the respective protection loopholes of the two. Therefore, how to eliminate the potential security loopholes in the existing gas security system has become a technical problem for professional technicians to overcome.

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