Method and device for measuring hyperpressure of flammable gas explosion shock waves

Abstract

The invention discloses a method for measuring hyperpressure of flammable gas explosion shock waves. The method includes placing a horizontal track device in an explosion case; arranging a spherical reference object on horizontal tracks; filling flammable gas with certain concentration into the explosion case; igniting the gas; recording a dynamic process of explosion of the flammable gas by a high-speed camera; analyzing via ProAnalyst kinetic analysis software to obtain acceleration of the spherical reference object under the action of the shock waves; and measuring the hyperpressure of the flammable gas explosion shock waves by using the Newton's second law. The Newton's second law and the characteristic of high-speed analysis of the high-speed cameral are sufficiently utilized, so that the hyperpressure of the flammable gas explosion shock waves is measured via physical principles, and the method has an important guiding significance for preventing and controlling actual flammable gas explosion disasters. Besides, the method has the advantages that a device is simple in structure, operation steps are simple, a measurement result is visible and precise, and closely reflects the actual condition, and the method is easy to popularize.

Description

technical field [0001] The invention relates to an explosion shock wave overpressure measurement technology, in particular to a combustible gas explosion shock wave overpressure measurement method. 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 industrial sc...

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Problems solved by technology

[0006] At present, the pressure sensor installed in the explosion reactor is mainly used to measure the overpressure of the combustible gas explosion shock wave. The measurement 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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