Method and device for measuring explosion shock wave energy of combustible gas

Abstract

The present invention discloses a method and a device for measuring the explosion shock wave energy of a combustible gas. Sheet-like barriers are arranged in an explosion case, and the explosion case is filled with the combustible gas, so that the combustible gas in the explosion case reaches an explosion concentration. A gas stirrer is started to make the combustible gas be distributed in the case evenly, the combustible gas is ignited and detonated in the middle of the barrier, at the same time, a high-speed camera is used to shoot the motion state of the barrier continuously, and a computer is connected to record and process the experimental data, so that the explosion shock wave energy of the combustible gas is obtained. According to the present invention, the energy generated by the explosion shock wave of the combustible gas is calculated by utilizing the motion acceleration and speed of the exploded barrier and according to the fluid kinematics and the newton's laws of motion. The method and device of the present invention possess important guidance meaning for determining the damaging range of the combustible gas explosion disaster in reality and adopting effective prevention and control measures. By the technical scheme of the present invention, the operation steps are simple, the measurement result is visual and accurate, and the structure of the explosion case is simple and is similar to the actual situation.

Description

technical field [0001] The invention relates to a technology for measuring explosion impact energy, in particular to a method and a device for measuring explosion energy of combustible gas in the presence of barriers. Background technique [0002] With the further aggravation of the global energy crisis and ecological damage, the traditional energy represented by oil and coal will not only face the severe situation of resource depletion, but also face the huge pressure of energy conservation and emission reduction. In this context, it is becoming the common choice of all countries in the world to transform the high-pollution and high-energy consumption economic growth mode and develop a "low-carbon economy" based on clean energy. As an important part of clean energy, gas energy (mostly combustible gas, mainly including natural gas, coalbed methane, shale gas, biogas, liquefied petroleum gas, hydrogen, etc.) has developed rapidly in recent years and has gradually formed a new...

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Problems solved by technology

[0005] At present, the pressure sensor installed in the explosion reactor is mainly used to measure the force of the explosive impact of combustible gas. The measured data not only lacks intuitiveness, but also lacks certain accuracy due to the hysteresis characteristics of the sensor.

In addition, most of the pressure sensors are installed in the pipe-shaped explosive reactor, but in reality, most combustible gas explosions occur in confined spaces close to open spaces, so the explosive environment simulated by the pipe-shaped explosive reactor lacks certainty. representation of

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