Goaf fire prevention and extinguishing device capable of generating carbon dioxide through self-reaction and method thereof

A carbon dioxide and fire extinguishing device technology, applied in safety devices, fire prevention, dust prevention, etc., can solve the problems of high cost and complexity, and achieve the effect of low corrosion, high safety and convenient transportation

Pending Publication Date: 2018-03-06
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the preparation, storage, transportation and release of carbon dioxide gas, the whole system is relatively complicated and the cost is high

Method used

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  • Goaf fire prevention and extinguishing device capable of generating carbon dioxide through self-reaction and method thereof
  • Goaf fire prevention and extinguishing device capable of generating carbon dioxide through self-reaction and method thereof
  • Goaf fire prevention and extinguishing device capable of generating carbon dioxide through self-reaction and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A goaf anti-fire extinguishing device that self-reacts to generate carbon dioxide. After its structure is decomposed, the schematic diagram is shown in figure 1 , including: a sealed tank, a polyethylene octene co-elastomer sheet 3, a porous skeleton gasket 4, an energy release sheet 5, a hollow screw cap 6 for fixing the energy release sheet 5, solid sodium bicarbonate and acetic acid aqueous solution.

[0043] The sealed tank is separated into a solid tank body 2 and a liquid tank body 1 by a polyethylene octene co-elastomer sheet 3 and a porous skeleton gasket 4, and the solid tank body 2 and the liquid tank body 1 are formed by the liquid tank body and the solid tank body The thread 11 is connected; the solid tank 2 is used to hold solid sodium bicarbonate, and the liquid tank 1 is used to hold acetic acid aqueous solution;

[0044] The polyethylene octene co-elastomer sheet 3 has a melting temperature of 50° C. and a thickness of 3 mm;

[0045]The porous skeleton ...

Embodiment 2

[0063] A goaf anti-fire extinguishing device that self-reacts to generate carbon dioxide. After its structure is decomposed, the schematic diagram is shown in figure 2 , including: a sealed tank, a polyethylene octene co-elastomer sheet 3, a porous skeleton gasket 4, an energy release sheet 5, a hollow screw cap 6 for fixing the energy release sheet 5, solid sodium bicarbonate and acetic acid aqueous solution.

[0064] The sealed tank is separated into a solid tank body 2 and a liquid tank body 1 by a polyethylene octene co-elastomer sheet 3 and a porous skeleton gasket 4, and the solid tank body 2 and the liquid tank body 1 are formed by the liquid tank body and the solid tank body The thread 11 is connected; the solid tank 2 is used to hold solid sodium bicarbonate, and the liquid tank 1 is used to hold acetic acid aqueous solution;

[0065] The polyethylene octene co-elastomer sheet has a melting temperature of 60°C and a thickness of 3mm;

[0066] The porous skeleton gas...

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PUM

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Abstract

A goaf fire prevention and extinguishing device capable of generating carbon dioxide through self-reaction and a method thereof belong to the field of spontaneous combustion disaster prevention and control for underground coal mine. The device of the invention comprises a sealable tank, an isolation sheet, a porous skeleton pad, an energy release sheet, a hollow spiral cover, solid sodium bicarbonate and acetic acid aqueous solution. The sealable tank is isolated by a POE sheet and the porous skeleton pad into a solid tank for containing the solid sodium bicarbonate and a liquid tank for containing the acetic acid aqueous solution. The sealable tank is placed in the goaf. When residual coal is oxidized and ignited spontaneously to reach a specific temperature, the POE sheet reaches a molten state to burst, the two reactants contact to undergo an endothermic reaction, and lots of carbon dioxide is generated to expand 100-140 times in volume greater than the volume of the sealable tank.Then, the generated high pressure makes the energy release sheet at the end of the sealable tank to be burst and then the carbon dioxide gas is released so as to inhibit spontaneous combustion of residual coat in the goaf. The device of the invention has the following advantages: the device is simple and small in size, and the method is easy to operate. In addition, the fire prevention and extinguishing effect is more excellent.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of underground spontaneous combustion disasters in coal mines, and in particular relates to a gob fire prevention and fire extinguishing device and method for self-reaction to generate carbon dioxide. Background technique [0002] Coal spontaneous combustion fire is one of the most important threats to coal mine production. In my country's key coal mines, about 50% of the mines have coal spontaneous combustion hazards, and 94% of the total number of mine fires are coal spontaneous combustion, of which coal spontaneous combustion in goafs accounts for about 60%. At present, there are many methods for preventing spontaneous combustion fires in goafs, and one of the most widely used methods is to inject inert gas into goafs to reduce the oxygen concentration in goafs and achieve the purpose of fire prevention and extinguishing. [0003] As an inert gas, carbon dioxide has various effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62C5/00A62C3/00A62C37/11E21F5/00
CPCA62C3/00A62C5/004A62C37/11E21F5/00
Inventor 张勋王鑫阳邓存宝王雪峰戴凤威黄戈王延生凡永鹏
Owner LIAONING TECHNICAL UNIVERSITY
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