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

A gas explosion and measuring device technology, applied in the direction of measuring blasting force, etc., can solve the problems of sensor lag, lack of accuracy, lack of representativeness of explosion environment, etc., and achieve the effect of easy popularization and application, intuitive measurement results, and simple operation steps

Inactive Publication Date: 2013-01-16
CHANGZHOU UNIV
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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.

Method used

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

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Example Embodiment

[0017] Measuring device such as figure 1 , The size of explosion box 1 is 0.5m×0.5m×0.7m, one of which is the pressure relief surface (sealed with newspaper during the measurement). The ignition electrode 6 and the stirrer 5 enter the explosion box through the side and upper openings of the explosion box respectively. The upper and lower sides of the explosion box are equipped with air inlets, which are connected to the combustible gas cylinder 8 through the gas delivery pipe 9 and the gas delivery pipe A gas flow meter 7 and a valve 4 are provided on the road 9. Arrange the horizontal rail device 2 in the explosion box 1, adjust the lens of the high-speed camera 3 so that it is perpendicular to the plane of the horizontal rail device 2, and adjust the focal length to make the picture quality the best. The high-speed camera 3 is connected to the computer 11 through a data line 10. After filling the explosion box with a certain concentration of combustible gas, the igniti...

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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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Application Information

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IPC IPC(8): G01L5/14
Inventor 王凯全乐林
Owner CHANGZHOU UNIV
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