Abstract
The safety accident of indoor natural gas supply system is the process of natural gas leakage and diffusion, most of which are turbulent processes affected by many factors. When the natural gas leaks into the indoor confined space, it will mix with the air to form a mixture. When the oxygen in the natural gas and the air reaches a certain concentration range, combustion or explosion will occur when it meets the ignition source. This paper mainly introduces the influencing factors and calculation methods of the explosion limit of natural gas, and analyzes the calculation methods of the explosion limit of multi-component combustible mixed gas.
Highlights
With the continuous improvement of people's living standards, urban natural gas, like water, electricity and heat, is closely related to daily production and life[1]
When the gas content increases to the point where it cannot form an explosive mixture, the content is called the explosive upper limit of the gas
The explosion limit of natural gas is affected by different factors, including temperature, pressure, purity, space size, ignition source and other factors
Summary
With the continuous improvement of people's living standards, urban natural gas, like water, electricity and heat, is closely related to daily production and life[1]. The popularization and use of natural gas has greatly improved people's living standard and further accelerated the urbanization process[2]. With the continuous expansion of the city's gas supply range and the gradual growth of the number of users, indoor natural gas accidents have occurred frequently in recent years, causing many casualties and property losses. In order to protect the life and property safety of natural gas users, it is necessary to analyze the causes, rules and hazards of the accidents so as to find out the corresponding safety precautions. The explosion limit of natural gas is studied, the factors affecting the explosion limit of multi-component mixed gas are analyzed, and the calculation method of explosion limit of natural gas is determined
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