Foam gel preparing apparatus for mine fire preventing and extinguishing

Abstract

A disclosed foam gel preparing apparatus for mine fire preventing and extinguishing comprises a shell (9), a liquid inlet (1) and a foam gel outlet (8) respectively arranged at the two ends of the shell, a foaming device arranged in the shell, and an air inlet pipe (4) arranged on the outer wall of the shell and communicated with the foaming device. The foam gel preparing apparatus also comprises a gelatinizing agent charging pipe (6) and a gelatinizing agent adding device (12); the gelatinizing agent adding device (12) mainly consists of a peripheral-direction charging groove (24), a discharging hole (25) and a positioning barrel (26); the positioning barrel is fixedly disposed on the inner wall of the shell and at the rear of the foaming device; the inner circle of the positioning barrel forms the peripheral-direction charging groove which is communicated with the gelatinizing agent charging pipe; and the discharging hole is arranged on the peripheral-direction charging groove. The apparatus enables a large amount of liquid on a foam wall to form gel in the premise of no damage to foam structure, and by taking foams as a carrier, the diffusion scope of the gel in the fire preventing and extinguishing area is substantially improved, and also a large amount of water is concreted in gel and does not run off.

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

Images