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Experimental method for container pipeline gas explosion experimental device with concentration gradient

An experimental device and a gas explosion technology, which are applied in the experimental field of a container pipeline gas explosion experimental device with a concentration gradient, and can solve the problem that the concentration gradient flammable gas configuration cannot be realized.

Inactive Publication Date: 2019-05-10
应急管理部天津消防研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The commonly used gas explosion devices at home and abroad are 20L spherical explosion vessels and 1 cubic column type explosion vessels. The gas equipment of the vessel pipeline system is rare, mainly the connected vessel gas explosion equipment developed by Nanjing University of Technology. Combustible gas is the experimental object, and the configuration of combustible gas with concentration gradient cannot be realized
Therefore, there are few reports on the gas explosion experimental device of the container pipeline system with concentration gradient.

Method used

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  • Experimental method for container pipeline gas explosion experimental device with concentration gradient
  • Experimental method for container pipeline gas explosion experimental device with concentration gradient
  • Experimental method for container pipeline gas explosion experimental device with concentration gradient

Examples

Experimental program
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Effect test

Embodiment 1

[0082] Embodiment 1, the combustible gas is methane. In this embodiment, the first gas concentration restricted space 10-1 can be configured as 5% combustible gas methane, and the second gas concentration restricted space 10-2 is 7.5% combustible gas methane in the pipeline. The third gas concentration restricted space 10-3 is 10% combustible gas methane, the fourth gas concentration restricted space 10-4 is 12.5% ​​combustible gas methane, and the fifth gas concentration restricted space 10-5 is 15% combustible gas methane.

[0083] The specific implementation method is: install the ignition device on the ignition preparation device I1-1-6, the ignition reservation device II1-1-9, the ignition reservation device III1-1-10, the ignition reservation device IV2-1-6, In any one of the pre-ignition device V2-1-9, pre-ignition device VI2-1-10, pre-ignition device VII15-1, pre-ignition device VIII15-2 and pre-ignition device IX15-3, pass The thread structure of the ignition device ...

Embodiment 2

[0090] Embodiment 2, the combustible gas is methane, and the inert gas is nitrogen. In this embodiment, the first gas concentration limited space 10-1 can be configured as 5% methane combustible gas, and the second gas concentration limited space 10-2 is 7.5% methane. %methane combustible gas, 10% methane combustible gas in the third gas concentration restricted space 10-3 pipeline, 12.5% ​​methane combustible gas in the fourth gas concentration restricted space 10-4 pipeline, fifth gas concentration restricted space 10-5 The container is 100% nitrogen.

[0091] The specific implementation method is:

[0092] Install the ignition device in the pre-ignition device I1-1-6, pre-ignition device II1-1-9, pre-ignition device III1-1-10, pre-ignition device VII15-1, pre-ignition device VIII15-2 , Ignition reserved device IX15-3 in any device.

[0093] The first step is to vacuumize;

[0094]Turn on the vacuum pump 6, and turn on the vacuum pump solenoid valve 6-1, air and gas circu...

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Abstract

The invention relates to an experimental method of a container pipeline gas explosion experimental device with a concentration gradient. The method comprises the following steps: starting a vacuum pump to make first to fifth gas concentration limited spaces vacuum; setting a gradient concentration under negative pressure, configuring combustible gases of different concentrations in the five gas concentration limited spaces, or configuring combustible gases of different concentrations in the first to fourth gas concentration limited spaces while configuring an inert gas in the fifth gas concentration limited space; and carrying out an ignition experiment, enabling an upper computer to control four sealing devices at the same time to communicate the five gas concentration limited spaces, sending an ignition instruction to an ignition device, sensing the pressure change with a PCB pressure sensor, detecting a flame signal with a flame detector, and transmitting monitoring data to the upper computer for analysis and processing. The configuration of the combustible gases with different combination concentrations and the configuration of combustible gases with different combination concentrations and the inert gas can be realized, so as to study the explosion propagation mechanism and explosion evolution dynamics process of combustible gases with concentration gradients.

Description

technical field [0001] The invention provides an experimental method of a container pipeline gas explosion experiment device with a concentration gradient. The method can realize automatic configuration of combustible gases with different concentrations in multiple areas of the container pipeline system, and can also realize combustible gases with different concentrations in certain areas of the container pipeline system. And other areas for the automatic configuration of inert gas, and implement the simulation experiment of the gas explosion dynamic process and mechanism research of the container pipeline system with concentration gradient. Background technique [0002] With the rapid development of the economy, flammable gases are widely used in industrial processes, especially in petrochemical production. Combustible gas is usually in a confined space, such as reactors, reactors, storage tanks and other chemical containers or production devices, and these container device...

Claims

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Application Information

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IPC IPC(8): G01N33/22
Inventor 许晓元赵力增李善诚刘晅亚纪超于年灏朱红亚李晶晶
Owner 应急管理部天津消防研究所
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