CN113027506A

CN113027506A - Inerting and fire extinguishing technology of air duct direct connection inert gas generator

Info

Publication number: CN113027506A
Application number: CN201911247375.7A
Authority: CN
Inventors: 朱芳队; 曾凡付; 陈玉明; 吴继园; 陈艳明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-25

Abstract

The invention improves the original water supply and cooling system of the DQP-200 type inert gas generating device, designs and adds a multifunctional guider device for draining water and pressure, quickly and organically combines the inert gas generating device with a fan and an air duct of a tunneling head after transformation, conveys the inert gas after temperature reduction, pressure reduction and drainage to a single-head tunnel tunneling head through the fan and the air duct, uses the inert gas to replace the original fresh air flow supplied by the fan to normally ventilate the tunneling head, and leads the fire source to be anoxic and suffocated on the premise of keeping the air quantity of the tunneling head approximately unchanged and the gas concentration not reaching the explosion range, thereby achieving the purpose of long-distance fire extinguishing, and further realizing the quick, safe and efficient fire extinguishing effect.

Description

Inerting and fire extinguishing technology of air duct direct connection inert gas generator

Technical Field

The invention relates to the technical field of coal mine fire extinguishing, and the DQP-200 type inert gas generating device is combined with a single-head tunnel fan to extinguish fire.

Background

At present, when a fire accident occurs in a single-ended roadway of a mine, other methods such as remote sealing, flooding and the like are not used for processing, and other safer, more reliable, faster and more effective processing methods are not available. The method for processing the fire accident of the single-end roadway of the mine by adopting the methods of remote sealing, water flooding (only can be used in the single-end roadway of the downhill) and the like is relatively safe, but the sealing area of a fire area is large, the time for extinguishing the fire area and carrying out subsequent reworking and production recovery is longer, and the normal production of the mine is influenced. The mine single-end roadway is very complicated to process due to the influence of factors such as the occurrence place, the position, the environment and the like after the fire accident happens, and secondary accidents such as gas explosion and the like can be derived if the processing method and measures are improper.

Disclosure of Invention

The original water supply and cooling system of the DQP-200 type inert gas generating device is improved, a water drainage and pressure relief multifunctional guider device is additionally designed, the inert gas generating device can be quickly and organically combined with a fan and an air duct of a tunneling head after being transformed, inert gas is conveyed to the tunneling head through the fan and the air duct, the inert gas replaces the original fresh air flow supplied by the fan to normally ventilate the tunneling head, on the premise that the air quantity of the tunneling head is kept approximately unchanged, and the gas concentration cannot reach the explosion range, the fire source is subjected to anoxic suffocation, the purpose of long-distance fire extinguishment is achieved, and therefore the quick, safe and efficient fire extinguishing effect is achieved.

Description of the drawings:

FIG. 1 is a schematic diagram of an inert gas generator after being modified to directly supply inert gas to a heading head fan;

FIG. 2 is a schematic view of the spray cooling section of FIGS. 1-2;

FIG. 3 is a schematic cross-sectional view of the spray cooling section of FIGS. 1-2;

FIG. 4 is a schematic view of the multi-functional guide of FIGS. 1-5;

FIG. 5 is a front view of the multi-functional guide of FIGS. 1-5;

FIG. 6 is a top view of the multi-functional guide of FIGS. 1-5;

FIG. 7 is a left side view of the multi-functional guide of FIGS. 1-5;

fig. 8 is a schematic view of the connection with the air duct.

The specific implementation mode is as follows:

install one additional before the flue of inert gas generating device 1 export and spray cooling festival 2, spray cooling festival 2 interior welding a set of annular spraying, through to inert gas generating device export festival water spray, play the secondary cooling effect to high temperature inert gas, whether cooling spray set can reduce the within range that field device can bear the temperature.

And a pressure relief and water drainage multifunctional guider 5 is added behind the spraying cooling section, the pressure of the inert gas at an outlet is reduced, spraying cooling water is discharged, and the inert gas is conveniently connected with an air duct 8 through the pressure relief and water drainage multifunctional guider 5 so as to be conveyed to a fire source point in a disaster area in time.

The mine heading face fan 6 needs to connect the heading head fan air duct 8 with the inert gas generating device 1 in time to ensure that air is supplied to the heading head continuously. After the inert gas generating device normally produces the inert gas, firstly, the pressure relief and drainage multifunctional guider is decompressed by 5 openings and is half opened, the inert gas generating device is held by an operator, the outlet end of the inert gas is ensured to be parallel to the fan, and after the air duct on the running fan is detached under pressure, the air duct and the inert gas outlet are aligned immediately, which is equivalent to the automatic switching function and does not influence normal air supply. And then, closing the tunneling head fan, and simultaneously connecting an inert gas outlet end and an air cylinder to realize air supply (inert gas) of the tunneling working face. The oxygen content of the inert gas is below 5 percent, and the oxygen-cut fire extinguishing effect is realized.

Claims

1. A DQP-200 type inert gas generator is quickly and organically combined with a fan and an air duct of a tunneling head, inert gas is conveyed to the tunneling head through the fan and the air duct, and the inert gas replaces the original fresh air flow supplied by the fan to carry out normal ventilation on the tunneling head, so that the fire source is subjected to anoxic asphyxiation, and the effect of long-distance fire extinguishing is achieved.