Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition

A test device and gas leakage technology, applied in fuel oil testing, material inspection products, etc., can solve problems such as small size and inability to simulate real scenes

Inactive Publication Date: 2013-12-18
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

At present, domestic research on the shock-induced ignition process is mainly ca...

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  • Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition
  • Test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition

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Embodiment Construction

[0020] The present invention is a test device for high-pressure flammable gas leak spontaneous combustion and shock wave induced ignition. The whole test device consists of six systems, which are high-pressure gas supply system, high-pressure storage tank and downstream pipeline system, safety protection system, and dynamic image Recording system, data acquisition system and solenoid valve control system. The high-pressure gas supply system is mainly used to continuously and stably fill the high-pressure storage tank with test gas, and at the same time, it can also provide a gas source for the inspection of the air tightness before the test and the exhaust gas in the cleaning device after the test; the high-pressure storage tank and the downstream pipeline The system includes a bursting disc holder device (bursting disc inside), and the high-pressure storage tank is filled with a certain pressure of test gas to simulate the storage of high-pressure gas. When the storage pressur...

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Abstract

The invention discloses a test device for high-pressure combustible gas leakage spontaneous combustion and shock wave induction ignition. The whole test device comprises a test gas bottle, a nitrogen gas bottle, a high-pressure ventilating pipeline, a pressure stabilization valve, an electromagnetic valve, a pressure gauge, a vacuum pump, a high-pressure storage tank, a pressure transducer, an ICP (inductively coupled plasma) pressure sensor, a photoelectric diode, a rupture disk clamp (in which a rupture disk is arranged), downstream pipelines, a schlieren, a high-speed camera, a protection box, an air compressor and the like. The device can be used for (1) researching the influence of factors, such as different leakage pressures, shapes, lengths and diameters of different downstream pipelines, the gas initial temperature, a breakage shape of the rupture disk and obstacles outside an orifice, on the spontaneous combustion ignition, and further completing a spontaneous combustion ignition mechanism; (2) researching a shock wave induction ignition process and disclosing a shock wave induction ignition mechanism and influence factors thereof; (3) realizing the visible research on spontaneous combustion ignition and shock wave induction processes.

Description

technical field [0001] The invention belongs to the technical field of flammable gas safety, and in particular relates to a test device for high-pressure flammable gas leakage spontaneous combustion and shock wave induced ignition. Background technique [0002] High-pressure storage of flammable gas is an important technology to improve energy utilization efficiency, but spontaneous combustion and ignition may occur when the high-pressure stored flammable gas is accidentally leaked or released, which may lead to fire and explosion accidents. At present, there is no unified understanding of the mechanism of spontaneous combustion of high-pressure flammable gas leakage at home and abroad, and most of the research focuses on the theory of diffusion ignition. Diffusion ignition theory means that high-pressure combustible gas is released directly into the air (or oxygen) through the downstream pipeline or directly, and a shock wave will be formed at the front end of the gas fuel ...

Claims

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Application Information

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IPC IPC(8): G01N33/22
Inventor 孙金华段强领肖华华沈晓波彭忠璟
Owner UNIV OF SCI & TECH OF CHINA
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