Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space

Abstract

The invention provides a testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space under the condition of multiple factors. The testing apparatus comprises an ignition device, a pressure-resistant enclosed container, a combustible gas tank, an air compressor and a PLC control assembly unit. The testing apparatus researches on the explosion characteristics and reaction process mechanisms of a variety of combustible gases under different conditions through barrier setting, gas distribution, ignition, measurement, acquisition and integration of an analysis system and provides technical reference for pipeline arrangement, explosion suppression design and safety evaluation.

Description

technical field [0001] The invention relates to the technical field of safety science and engineering experiment equipment, in particular to a combustible gas explosion test device in a long and narrow space. Background technique [0002] Under the ground, the urban culverts and oil and gas pipelines are intricately laid, and intersections are inevitable. Once leakage occurs at these intersections, the volatilized oil and gas will mix with the air in the culvert and accumulate in a relatively closed narrow space in the culvert. Rapid deflagration, even detonation, will cause extremely serious damage and cause great loss of personal and property safety. Sinopec's "11.22" oil pipeline leakage explosion was a typical oil and gas explosion accident in a narrow and long space, which caused a bad social impact. It is of great significance to construct a typical explosion test device in a narrow and long confined space to study the characteristics of combustion and explosion of co...

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Problems solved by technology

Chinese patent application No. 201120399242.4 provides "a device for testing the explosiveness of combustible gas and steam under high temperature and high pressure". It is a spherical container with a simple structure, and can only measure the explosive limit of combustible gas, and cannot actually simulate the explosive reaction of combustible gas in the pipeline and dissemination process

Chinese Patent Application No. 201010278947.0 "Automatic gas distribution and detonation test device for flammable and detonating mixed gas" has proposed a gas distribution and detonation test concept for flammable mixed gas, but the specific gas storage chamber structure, distribution of pressure and temperature measurement points and gas distribution principle not involved

Chinese patent application number 201110370604.1 provides "a fire experiment simulation device in a narrow and long confined space". Although a cuboid device with a square cross section is constructed to study fire flashover, the device is resistant to pressure differences, lacks dynamic pressure measurement, and has no corresponding Gas distribution and pressure relief system, not suitable for gas explosion research that will generate pressure waves

Chinese Patent Application No. 200810246230.0 provides "an experimental device for suppressing gas and dust explosions by using fine water mist". A rectangular cylinder is used for fire and combustion tests. The wall of the device is made of plexiglass, which is difficult to withstand overpressure, and the existence of obstacles is not considered. The law of flame propagation in the case of

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