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Device for testing explosion characteristic parameters of combustible gas ignited by hot dust under laser irradiation

A technology of laser irradiation and characteristic parameters, applied in the direction of material explosion, can solve the problem of inability to accurately and synchronously test the key parameters of hot dust detonation gas explosion, and achieve the effect of short response time, accurate calculation and research

Pending Publication Date: 2020-06-12
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] In order to solve the problem that the existing test device cannot accurately and synchronously test the process of hot dust detonating gas and the key parameters of the explosion, the present invention provides a test device for the characteristic parameters of hot dust igniting combustible gas explosion under laser irradiation

Method used

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  • Device for testing explosion characteristic parameters of combustible gas ignited by hot dust under laser irradiation
  • Device for testing explosion characteristic parameters of combustible gas ignited by hot dust under laser irradiation
  • Device for testing explosion characteristic parameters of combustible gas ignited by hot dust under laser irradiation

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Embodiment Construction

[0022] Such as figure 1 As shown, a test device for the explosion characteristic parameters of hot dust ignited combustible gas under laser irradiation, including a semiconductor continuous wave laser 19, an infrared thermometer 18, a high-speed schlieren camera system, a synchronous trigger system 6 and an explosion container 1, the explosion There are windows 2 sealed with quartz glass on the two side walls of the container 1. A dust support 4 is arranged in the explosion container 1. There is a groove for placing dust on the dust support 4. The explosion container 1 is provided with a reserved hole. A pressure sensor 15, a vacuum gauge 16, a vacuum pump 13, an inflation valve 17 and a pressure reducing valve 14 are installed in the hole, and sealing means are used to seal, and the explosion vessel 1 is also provided with a glass window 23, a semiconductor continuous wave laser 19 and an infrared thermometer 18 The laser is irradiated on the center of the dust through the la...

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Abstract

The invention belongs to the field of coal mine underground gas and coal dust explosion research, and particularly relates to a device and a method for testing explosion characteristic parameters of combustible gas detonated by hot dust under non-contact laser irradiation. The device comprises a semiconductor continuous wave laser, an infrared thermometer and an explosion container, windows sealedby quartz glass are formed in two side walls of the explosion container; a dust bracket is arranged in the explosion container; a groove for placing dust is formed in the dust bracket; a preformed hole is formed in the explosion container; a pressure sensor, a vacuum meter, a vacuum pump, an inflation valve and a pressure reducing valve are arranged in the preformed hole; sealing means are adopted for sealing, the explosion container is also provided with a glass window; laser of the semiconductor continuous wave laser and the infrared thermometer irradiates the center of dust through the laser coaxial system, the high-speed schlieren camera systems are arranged on the two sides of the explosion container, and the semiconductor continuous wave laser, the infrared thermometer, the high-speed schlieren camera systems, the synchronous triggering system and the pressure sensor are connected with the computer control center.

Description

technical field [0001] The invention belongs to the research field of underground gas and coal dust explosions in coal mines, in particular to a testing device for characteristic parameters of combustible gas explosions ignited by hot dust under laser irradiation. Background technique [0002] Gas and coal dust explosions are the main disasters that threaten underground safety. The more harmful dust explosion accidents caused by the hoisting of deposited dust caused by gas explosions are common underground explosions. Therefore, gas monitoring and control is an effective means to prevent accidents. With the development of optical technology and monitoring technology, fiber optic gas sensors have gradually replaced traditional monitoring methods such as catalytic combustion sensors due to their advantages of fast response and high precision. However, when the optical fiber is damaged or coal dust accumulates at the tip of the optical fiber, due to the strong heat absorption c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/54
CPCG01N25/54
Inventor 张昌锁马钧蓉
Owner TAIYUAN UNIV OF TECH
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