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A phase change generator for underground mobile inert fire prevention and extinguishing material

A fire prevention and generator technology, applied in fire prevention, dust prevention, mining equipment, etc., can solve the problems of potential safety hazards, easy leakage, unstable state of liquid carbon dioxide, etc., and achieve the effect of energy saving

Active Publication Date: 2018-04-20
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, coal mines generally adopt the technology of nitrogen injection in gobs, but coal rocks do not absorb nitrogen at room temperature, and nitrogen injection is generally suitable for goafs with good airtightness. The spontaneous combustion of the column cannot be prevented
Liquid carbon dioxide fire prevention technology utilizes the characteristics of coal rocks to absorb carbon dioxide, and the fire extinguishing effect of carbon dioxide is also better than that of nitrogen, but the state of liquid carbon dioxide is unstable and easy to leak, causing certain safety hazards

Method used

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  • A phase change generator for underground mobile inert fire prevention and extinguishing material
  • A phase change generator for underground mobile inert fire prevention and extinguishing material

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Effect test

specific Embodiment approach

[0011] The preferred embodiment of the downhole mobile inert fire extinguishing material phase change generator of the present invention is:

[0012] Including a phase change generator, the phase change generator includes a housing, the front end of the housing is provided with a shower water / air tank, the rear end of the housing is provided with a drainage / air collection tank, the flower The sprinkler water / air tank is provided with a shower water / air port, the drainage / air collection tank is provided with a drainage / air port, and the housing is connected between the shower water / air tank and the drainage / air collection tank. A plurality of spiral copper pipes, each spiral copper pipe is provided with an embedded constant flow valve at the front end, the side wall of the shell is provided with a charging port and an inert gas outlet, and a constant flow valve and a constant flow valve are provided at the inert gas outlet. flow meter.

[0013] The water inlet / air groove of th...

specific Embodiment

[0026] like figure 1 , figure 2 As shown, it includes three parts: water / air system, phase change generator and drainage / air system. The water / air system consists of a three-way valve 01, a shower water / air tank 02 and pipelines, of which the shower water / air tank 02 includes a shower water / air port 14, a spiral diversion tank 15, Copper pipe water inlet / air terminal 16. The phase change generator consists of embedded constant flow valve 03, pressure gauge 04, charging port 05, exhaust valve 06, safety valve 07, constant flow valve 08, flow meter 09, insulation layer 12, spiral copper pipe 13 and pipe road composition. The drainage / air system consists of a three-way valve 10, a drainage / air collection tank 11 and pipelines.

[0027] In the water supply mode, the water flow enters the shower water inlet / air port 14 from the underground water pipe, fills the entire shower water / air tank 02 through the spiral diversion groove 15, and arranges in the shower water / air tank 02 ...

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Abstract

The invention discloses an underground movable inert fire prevention and extinguishing material phase change generator. The front end of a shell is provided with a shower head water / air feeding groove, the rear end of the shell is provided with a water / gas discharge collector groove, multiple spiral copper pipes are connected between the shower head water / air feeding groove and the water / gas discharge collector groove in the shell, the front end of each spiral copper pipe is provided with an embedded constant flow valve, the side wall of the shell is provided with a charging hole and an inert gas outlet, and the inert gas outlet is provided with a constant flow valve and flowmeter. The shower head water / air feeding groove is provided with a spiral flow guide groove. The side wall of the shell is provided with a pressure meter, an exhaust valve and a safety valve. A shower head water / air inlet is connected with a water inlet pipe and an air inlet pipe through a three-way valve. A shower head water / air outlet is connected with a water outlet pipe and an air outlet pipe through a three-way valve. Solid state inert fire prevention and extinguishing material phase change is utilized for obtaining inert gas, an underground coal mine water pipe or air pipe is directly utilized for providing heat needed by the inert fire prevention and extinguishing material for obtaining insert gas, and no power source is adopted, so that safety and reliability are higher, and energy is saved.

Description

technical field [0001] The invention relates to an underground coal mine fire prevention and extinguishing equipment, in particular to an underground mobile inert fire prevention material phase change generator. Background technique [0002] Coal spontaneous combustion is an important cause of coal mine fires, seriously affecting coal mine production and the safety of underground workers. At present, the technical measures to control coal spontaneous combustion mainly include grouting fire prevention, inert gas fire prevention, three-phase foam fire prevention, gel fire prevention, and pressure equalization fire prevention. Inert gas fire prevention and extinguishing has the advantages of high cost performance and good fire extinguishing effect, and is a reliable technical measure for coal mines to control coal spontaneous combustion. At present, coal mines generally adopt the technology of nitrogen injection in gobs, but coal rocks do not absorb nitrogen at room temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00
CPCE21F5/00
Inventor 秦跃平杨小彬刘伟陈有强吴建松廖山王文强郭丹丹
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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