A foam gel preparation device for mine fire prevention

Abstract

The invention discloses a foam gel preparation device for fire prevention and extinguishing in mines, which comprises a shell (9), a liquid inlet (1) and a foam gel outlet (8) arranged at both ends of the shell, which are arranged in the shell The foaming device is arranged on the outer wall of the shell and communicated with the air inlet pipe (4) of the foaming device; it also includes a gelling agent feed pipe (6) and a gelling agent adder (12); the gelling agent adder ( 12) It is mainly composed of a circumferential feed trough (24), a discharge hole (25) and a positioning cylinder (26). The positioning cylinder is fixed on the inner wall of the housing behind the foaming device. The inner ring of the positioning cylinder forms a circumferential feed trough and gelling The agent feeding pipe is connected, and a discharge hole is arranged on the circumferential feeding groove. On the premise of not destroying the foam structure, the device makes a large amount of liquid on the foam wall form a gel, and uses the foam as a carrier to greatly increase its diffusion range in the fire prevention area. At the same time, a large amount of water will be consolidated in the gel. In the body, it will not be lost.

Description

technical field [0001] The invention relates to a foam preparation device for mine fire prevention and extinguishing, in particular to a foam gel preparation device for mine fire prevention and extinguishment. Background technique [0002] Mine fire is one of the major mine disasters in my country. In order to effectively prevent mine fires and coal spontaneous combustion, fire prevention technologies such as nitrogen, inhibitors, yellow mud grouting, gel and three-phase foam are generally used at present. Among them, gel has the advantages of good covering performance and strong heat absorption and cooling ability, but its disadvantages are small diffusion range and poor fluidity; three-phase foam has the advantages of wide diffusion range and fast fire extinguishing speed, but its foam stability is poor and the foam is very fast. When the foam bursts, a large amount of water flows back out of the fire area, which cannot keep the floating coal wet for a long time, and cool...

AI Technical Summary

Problems solved by technology

Among them, gel has the advantages of good covering performance and strong heat absorption and cooling ability, but its disadvantages are small diffusion range and poor fluidity; three-phase foam has the advantages of wide diffusion range and fast fire extinguishing speed, but its foam stability is poor and the foam is very fast. Burst, after the foam bursts, a large amount of water flows back out of the fire area, which cannot keep the floating coal moist for a long time, and cooling inhibits the spontaneous combustion of coal

[0003] The Chinese patent with the publication number CN1417451A, the patent name is a three-phase foam generating device for the prevention and treatment of coal spontaneous combustion. When a low-pressure area is generated, it is mixed with the gas through jet entrainment, and then relies on the liquid flow to drive the stirring impeller to rotate to form foam; this device is used to prepare three-phase foam to prevent coal spontaneous combustion, and cannot be used to prepare foam gel

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