CN101135245B - Device for automatically enclosing tunnel rapidly - Google Patents

Abstract

A device for automatically and quickly closing roadways, including a high-pressure air source, an air bag and a limit bracket, and a two-stage pressure reducing valve and a pressure gauge are installed on the high-pressure rubber hose between the high-pressure air source and the air bag. Pressure-compensated inflatable device, the surface layer of the airbag in contact with the roadway is a folded layer, and its edge is a skirt. By adjusting the pressure compensation inflation device, the air bag is automatically inflated and replenished with the set pressure to complete the sealing of the roadway. The height and width of the limit bracket are adjustable, and the outer end is equipped with a support seat, which has strong adaptability to the roadway section, is detachable, and is easy to carry. It can automatically replenish air, and when sealing fire areas with explosion hazards, it can ensure the safety of rescue and relief workers; it is suitable for rapid sealing of roadways in coal mines with no compressed air and no electricity. The utility model has the advantages of simple structure, light weight, convenient transportation and installation, ideal sealing effect and wide practicability.

Description

A device for automatically and rapidly closing roadways

technical field

The invention relates to a device for automatically and quickly closing a roadway, especially suitable for the automatic and fast closing of a roadway in the case of no electricity and no compressed wind during a coal mine catastrophe.

Background technique

Mine fire is one of the main disasters in coal mine production. When the fire develops rapidly, the fire area is large, and direct fire extinguishing is ineffective, the method of closing the fire area is often used to control the development of the fire. The closed fire area fire extinguishing method is to set up a temporary closed wall in the shortest time in all the roadways leading to the fire area at the fastest speed, and block the supply of oxygen to extinguish the fire source.

At present, the commonly used temporary airtight walls mainly include the following types: wind barriers, wooden board airtight walls, wood section airtight walls, masonry airtight walls, umbrella airtight airbag airbag airtight walls and polyurethane foam spray airtight walls. Wind barriers and wooden airtight walls have large air leakage and cannot effectively seal the disaster area; masonry airtight walls and wooden section airtight walls have a large transportation workload, and it is also difficult to transport underground, which does not meet the requirements for rapid rescue and disaster relief; umbrellas The airtight type airtight wall has limited ability to withstand wind pressure, poor airtight stability, and is vulnerable to changes in the direction of wind pressure when the wind flow is reversed; the airbag type airtight wall is a new type of airtight wall, which has a simple structure and is easy to use. However, the inflation process of the airbag-type airtight wall that has been adopted needs to be controlled manually, and the inflation cannot be automatically compensated in time when the pressure is relieved. Application effect: Spraying the temporary airtight wall with polyurethane foam plastic takes a long time to construct, and it is easy to produce cracks, which will affect the effect of wind isolation.

Contents of the invention

The purpose of the present invention is to provide a device for automatically and quickly closing roadways that can automatically inflate air and automatically replenish air when depressurizing, aiming at the deficiencies in the prior art.

The present invention is a device for automatically and quickly closing roadways, which includes a high-pressure air source, an air bag and a limit bracket. The pressure compensating inflatable device of stage decompression; the surface layer of the air bag in contact with the roadway is a folded layer, and its edge is a skirt.

There are 2 pressure reducing valves and 3 pressure gauges; the airbag is made of nylon fabric with a strength of 1100 D and a Hypalon tape material of Hypalon raw material added with an antistatic agent; The position-limiting bracket described above is composed of a plurality of support tubes, a plurality of sleeves connected to the support tubes and a drawing tube arranged in the sleeve, and the end of the drawing tube is provided with a ball head support seat; A concave card slot is provided, and a fixing bolt for fixing the drawing pipe is arranged in the card slot.

The device for automatically and rapidly closing roadways of the present invention is suitable for the automatic and fast closing of coal mine roadways in the occasion of no electricity and no pressurized wind during a coal mine catastrophe. A pressure compensation inflation device is set between the air bag and the air source to automatically compensate and inflate the air bag to realize the automation of the inflation process without manual control. When the airbag is depressurized, the air can be replenished automatically through the pressure compensation inflating device; the height and width of the limit bracket are adjustable, and the outer end is provided with a support seat, which has strong adaptability to the roadway section, is detachable, and is easy to carry; the airbag surface adopts folds The airbag structure greatly improves the sealing performance of the airbag; the bottled high-pressure gas is used as the high-pressure gas source, and the airbag is inflated without electricity and compressed air, which is safe and reliable, and has strong environmental adaptability. If there is a compressed air or nitrogen injection pipeline in the closed place of the roadway, high-pressure compressed air or nitrogen can also be used as the high-pressure gas source. Its structure is simple, light in weight, easy to carry and install, does not need compressed air, electricity, safe and reliable, the effect of sealing the roadway is ideal, and has a wide range of practicability.

Description of drawings:

Fig. 1 is an overall structural diagram of the present invention;

Fig. 2 is a side view of the limit bracket structure of the present invention.

In the figure: high pressure air source 1, pressure compensation inflation device 2, air bag 3, limit bracket 4, high pressure hose 5, pressure gauge 6, pressure reducing valve 7, support pipe 4-1, casing 4-2, pull pipe 4-3, card slot 4-4, fixing bolt 4-5, support seat 4-6.

Detailed ways

An example of the present invention will be further described below in conjunction with accompanying drawing:

As shown in the drawings, the device for automatically and quickly closing the roadway is composed of a high-pressure gas source 1, a pressure compensation inflation device 2, an air bag 3, and a limit bracket 4. The gas is decompressed from the high-pressure gas source 1 through the pressure compensation inflation device 2 and enters the air bag 3. The airbag 3 completes the sealing of the roadway under the fixing of the limit bracket 4 . The airbag is made of nylon fabric with a strength of 1100 D and Hypalon tape material added with antistatic agent Hypalon raw material. The Hypalon tape is light in weight, high in tensile strength, good in flexibility, airtight, flame retardant, and Static electricity, etc., and can withstand a certain high temperature. The pressure compensating inflation device 2 is composed of two pressure reducing valves 7 and three pressure gauges 6 arranged on the high pressure rubber hose 5. The pressure compensating inflation device 2 decompresses the high pressure gas in two stages, and can be adjusted by adjusting the two pressure reducing valves 7. Set the gas pressure at the outlet of the pressure compensation inflator 2. When the gas pressure in the airbag 3 reaches the outlet gas pressure set by the pressure compensation inflator 2, the inflation process will automatically stop, that is, the automatic inflation of the airbag will be completed. If the airbag is depressurized, because the gas pressure in the airbag is lower than the gas pressure at the gas outlet of the pressure compensation inflator 2, the gas is automatically filled into the airbag, and when the gas pressure in the airbag and the gas pressure at the gas outlet of the pressure compensation inflator 2 reach a balance, When the air replenishment process is over, the automatic air replenishment process is completed, and automatic compensation inflation is realized. One end of the pressure compensating inflation device 2 is connected to the air bag 3 through the inflation joint 8 provided on the high-pressure rubber hose 5 , and the other end is connected to the high-pressure gas source 1 through the control valve. The airbag 3 is provided with an inflatable interface for supplementing gas, and the inflatable interface is connected with the inflatable joint 8. The surface layer of the airbag 3 in contact with the roadway is a folded layer, and its edge is a skirt to improve airtightness. The limit bracket 4 is composed of a support tube 4-1, a sleeve tube 4-2 and a pull tube 4-3, between the support tube 4-1 and the support tube 4-1, between the support tube 4-1 and the sleeve tube 4-2 Connected by threads, the detachable limit bracket 4 is realized, and it is easy to carry; through the card slot 4-4 of the sleeve 4-2 and the fixing bolt 4-5 of the drawing tube 4-3, the sleeve 4- 2 and the drawing tube 4-3 form a whole, and the height and width of the limit bracket 4 are adjustable; 4-6 are connected by ball hinges, which can make the supporting base 4-6 freely rotate within a certain angle range, and realize the strong fixing of the limit bracket 4 to the roadway. The limit bracket 4 has strong adaptability to the section of the roadway, and is simple and fast to erect, and the fixed limit to the air bag 3 is firm and reliable.

Its working process: first set up the limit bracket 4, place the air bag 3 between the limit brackets 4, then use the high-pressure rubber hose 5 to connect the high-pressure air source 1 and the air bag 3, open the valve of the high-pressure air source 1, and adjust the pressure compensation inflation device 2. After confirming that the inflation process has started, the rescuers can immediately evacuate the scene of the disaster area.

Claims (1)

1. A device for automatically and quickly closing a roadway, comprising a high-pressure gas source (1), an air bag (3) and a stop bracket (4), the surface layer of the air bag (3) in contact with the roadway is a folded layer, and its edge It is a skirt, and it is characterized in that: on the high-pressure rubber hose (5) between the high-pressure gas source (1) and the air bag (3), there is a two-stage pressure-reducing valve (7) and a pressure gauge (6). Pressure compensation inflation device (2) for decompression; the limit bracket (4) is composed of a plurality of support pipes (4-1), a plurality of sleeve pipes (4-2) connected to the support pipes (4-1) It is composed of a drawing tube (4-3) arranged in the sleeve (4-2), and the end of the drawing tube (4-3) is provided with a ball head support seat (4-6); the sleeve (4-2) is provided with a concave draw-in groove (4-4), and a fixing bolt (4-5) for fixing the drawing pipe (4-3) is arranged in the draw-in groove (4-4).

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