Gas mixing device for burning and explosion tests of combustible gas, liquid steam and dust

A liquid and steam technology, which is used in gas and gas/vapor mixing, transportation and packaging, mixer accessories, etc. It can solve the problems of low experimental efficiency, inability to heat the gas mixing tank, and inability to heat the gas, and achieve a reasonable system structure and reduce Experimentation expenses, the effect of improving safety

Pending Publication Date: 2018-03-02
ANHUI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the gas distribution system of the above experimental equipment are that the gas distribution accuracy is greatly affected by external factors, the gas cannot be heated, the gas and liquid steam cannot be premixed, the interval between adjacent experiments is long, the experiment efficiency is low, the function of the gas distribution device is single, and the applicability is poor.
[0003] The patent CN104569315 combustible gas gas distribution device can only mix combustible gas, the gas mixing tank cannot be heated, and the combustible liquid is heated into liquid vapor to realize the mixing of combustible liquid vapor and combustible gas

Method used

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  • Gas mixing device for burning and explosion tests of combustible gas, liquid steam and dust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A gas distribution method of a combustible gas gas distribution device (taking air-hydrogen premixing as an example) The method includes the following steps:

[0016] (1) Calculate the required partial pressure of hydrogen gas according to the partial pressure method. The gas mixing tank is 30L, the required total gas pressure is 2MPa, and the required hydrogen concentration is 10%, then the partial pressure of the hydrogen gas is calculated as 0.2MPa by the partial pressure method.

[0017] (2) Open the cut-off valve on the vacuum gauge and vacuum pump, close other valves, start the vacuum pump to evacuate the gas mixing tank, observe the reading of the vacuum pressure gauge, when the reading reaches -0.1MPa, close the cut-off valve on the vacuum pump and the vacuum gauge, and open Hydrogen gas inlet valve, let 0.2MPa hydrogen gas into the air inlet, then close the hydrogen gas inlet valve, then open the compressed air inlet valve, let in air, when the pressure gauge r...

Embodiment 2

[0020] A gas distribution method for combustible gas and liquid steam (air-methane-ether as an example)

[0021] (1) The gas mixing tank is 30L, and the total gas pressure required for the heating tank volume of 15L is 1MPa, the required methane concentration is 20%, and the ether concentration is 10%. Pressure 0.1MPa, according to the pressure, temperature and volume to calculate the required quality of liquid ether. The actual pressure of the heating tank is 0.3MPa.

[0022] (2) Open the liquid inlet valve of the heating tank, add ether, close the inlet valve, open the stop valve on the vacuum gauge and the vacuum pump, close other valves, start the vacuum pump to vacuum the gas mixing tank and the heating tank, and observe the reading of the vacuum pressure gauge, When the reading reaches -0.1MPa, close the valves on the vacuum pump and vacuum gauge, close the valve between the gas mixing tank and the heating tank, open the methane gas inlet valve, let 0.2MPa methane gas i...

Embodiment 3

[0025] A method for gas distribution of liquid vapor (gasoline as an example)

[0026] (1) The gas mixing tank is 30L, and the total gas pressure required for the heating tank with a volume of 15L is 0.8MPa.

[0027] (2) Open the liquid inlet valve of the heating tank at the same time, add gasoline, close the inlet valve, open the stop valve on the vacuum gauge and the vacuum pump, open the stop valve between the gas mixing tank and the heating tank, close other valves, start the vacuum pump to the gas mixing pipe Carry out vacuuming, observe the reading of the vacuum pressure gauge, when the reading reaches -0.1MPa, close the valve on the vacuum pump and the vacuum gauge, turn on the heating belt, set the heating temperature for heating, and when the reading of the pressure gauge reaches 0.8MPa. Turn off heat.

[0028] (3) After the test, open the vent valve and gas inlet valve, pass in compressed air to purge the residual gas in the system, and open the stop valve on the dr...

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Abstract

The invention aims at providing a gas mixing device for burning and explosion tests of combustible gas, liquid steam and dust. The device comprises a bus-bar guide pipe, raw gas cylinders, a vacuum pump, a gas mixing tank, a heating tank, a heating tank, a heating belt and an accessory part, wherein the gas mixing tank and the heating tank are barrel-shaped storage tanks, and the bottoms of the gas mixing tank and the heating tank are respectively provided with a support base. The accessory part comprises a gas outlet pipe, raw gas cylinder connecting pipes, a vacuum pump connecting pipe, a pressure reducing valve connecting pipe, a pressure gauge connecting pipe, a vacuum gauge connecting pipe and a gas mixing tank connecting pipe which are arranged on the bus-bar guide pipe, a bus-bar guide pipe connecting pipe and an emptying valve connecting pipe which are arranged on the gas mixing tank, and a pressure gauge connecting pipe, a temperature gauge connecting pipe and a liquid inlet connecting pipe which are arranged on the top of the heating tank.

Description

technical field [0001] The invention relates to a gas distribution device used for explosion experiments of combustible gas, liquid steam and dust, and belongs to the field of energetic materials. Background technique [0002] Modern industrial production requires a large amount of flammable gas, and a large amount of liquid steam and dust are also produced during production. Due to the incomplete safety production precautions in our country, a large number of flammable gas, liquid steam and dust explosion accidents occur every year. Life and property pose a great threat. Through combustible gas, liquid vapor and dust explosion experiments, it is possible to explore and understand the occurrence, development and DDT mechanism of combustible gas, liquid vapor and dust explosions, so as to control, prevent and investigate accidents of combustible gases, liquid vapor and dust explosions Provide theoretical basis and corresponding suggestions. The configuration of combustible ...

Claims

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Application Information

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IPC IPC(8): B01F3/02B01F3/20B01F13/06B01F15/00B01F15/04B01F23/10B01F23/70
CPCB01F23/12B01F23/10B01F23/711B01F33/70B01F35/2113B01F35/83B01F2101/23
Inventor 刘文近陆松来李帅帅晏志远王文涛代玄德
Owner ANHUI UNIV OF SCI & TECH
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