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One-dimensional porous medium combustible gas deflagration inhibition visualization device and numerical simulation method

A technology of porous media and deflagration, which is applied in the fields of explosiveness of materials, photometry using electric radiation detectors, thermal development of materials, etc., to achieve the effect of saving experiment time and economic cost

Inactive Publication Date: 2020-11-03
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] None of the above measures can fundamentally solve the problem of gas explosion during transportation
Once the transmission pipeline explodes, only the methods and devices of the prior art cannot effectively prevent the damage to the roadway caused by the explosion in time

Method used

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  • One-dimensional porous medium combustible gas deflagration inhibition visualization device and numerical simulation method
  • One-dimensional porous medium combustible gas deflagration inhibition visualization device and numerical simulation method
  • One-dimensional porous medium combustible gas deflagration inhibition visualization device and numerical simulation method

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Embodiment 1

[0037] Such as figure 1 As shown, the visual experimental device for suppressing combustible gas deflagration by one-dimensional porous media of this embodiment includes a deflagration pipeline 11, one end of which is provided with an air inlet 7, an ignition source 8, and a first pressure sensor 9. A photoelectric sensor 10 is provided on the outside of the air inlet 7; the air inlet 7 is connected to the first mass flow controller 5 and the second mass flow controller 6, and the first mass flow controller 5 is connected to the air tank 1 through the first valve 3. The second mass flow controller 6 is connected to the methane gas storage tank 2 through the second valve 4; an exhaust valve 13 is provided on the side wall of the deflagration pipe 11 near the other end of the deflagration pipe 11. A second pressure sensor 18 is provided on the pipe wall on one side of the valve 13. The first pressure sensor 9, the photoelectric sensor 10, and the second pressure sensor 18 are resp...

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Abstract

The invention discloses a one-dimensional porous medium combustible gas detonation inhibition visualization device and a numerical simulation method. The device comprises a detonation pipeline; a gasinlet, an ignition source and a pressure sensor are arranged at one end of the detonation pipeline, and a photoelectric sensor is arranged on the outer side of the detonation pipeline; the gas inlet is connected with an air storage tank and a methane storage tank; an exhaust valve is arranged on the side wall of the deflagration pipeline, a pressure sensor is arranged on the pipe wall of one sideof the exhaust valve on the deflagration pipeline, the pressure sensor and the photoelectric sensor are connected with a data acquisition card, and the data acquisition card is connected with a computer; a one-dimensional porous medium is placed in the deflagration pipeline, and a PVC film is additionally arranged at the other end of the deflagration pipeline; a high-speed camera is arranged on the periphery of the deflagration pipeline and right faces the one-dimensional porous medium, the high-speed camera is connected with a synchronous controller, and the synchronous controller is connected with a computer. The invention further provides a numerical simulation method for inhibiting flammable gas deflagration through the one-dimensional porous medium according to the one-dimensional porous medium combustible gas detonation inhibition visualization device, and provides reference for improving the deflagration inhibition technology.

Description

Technical field [0001] The invention relates to the technical field of combustible gas explosion suppression, in particular to a one-dimensional porous medium visualization device and numerical simulation method for suppressing combustible gas deflagration. Background technique [0002] Gas is a potentially dangerous substance produced in the process of coal mining. The main component is methane. It is an important greenhouse gas in the atmosphere. Its greenhouse effect is 22 times higher than that of carbon dioxide. At the same time, it can be used as a clean energy and combustible gas. Use it to reduce its adverse impact on the environment, so it has been widely used in residents' life, power generation and automobile industries. However, in the process of gas extraction, transportation and storage, once a leak or an open flame occurs, it will cause serious consequences. Therefore, it is of important practical significance to study how to efficiently suppress gas explosions. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/54G01J1/42G01N25/24
CPCG01J1/42G01N25/24G01N25/54
Inventor 邓浩鑫尧志峰温小萍董建飞陈国艳王发辉张乔生郭志东王萌铭郑宏祥
Owner HENAN POLYTECHNIC UNIV
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