Fireproof structure for underground coal mine

Abstract

The utility model discloses a fireproof structure used in an underground coal mine, and relates to the technical field of disaster prevention and control in the underground coal mine. The periphery of the sealing wall is connected with the inner wall of a roadway; a door opening is formed in the sealing wall, a fireproof door used for sealing the door opening is hinged to one side of the sealing wall, and the fireproof door is controlled to be opened and closed through a telescopic mechanism. One end of the telescopic mechanism is hinged to one side, away from the door opening, of the fireproof door, and the other end is hinged to the roadway inner wall; a first flame-retardant sealing strip is mounted on one side, provided with the fireproof door, of the sealing wall; the first flame-retardant sealing strip is arranged around the door opening and located within the coverage range of the fireproof door. A second flame-retardant sealing strip is arranged at the bottom of the door opening; the device further comprises a fire detection mechanism, and the fire detection mechanism is arranged on the inner wall of the roadway and electrically connected with the telescopic mechanism. The device can achieve automatic control, is high in response speed, does not affect internal passing and transportation, is good in sealing effect, and can rapidly block fire spreading in an underground coal mine.

Description

Technical Field

[0001] The utility model relates to the technical field of disaster prevention and control in coal mines, and particularly relates to a fire prevention structure for coal mines underground. Background Technique

[0002] Coal mine fires are one of the important disasters affecting the safe production of coal mines. Once a fire breaks out in a coal mine underground, when the direct fire extinguishing method cannot extinguish the fire, it is necessary to seal the fire area. In the prior art, fire prevention is usually carried out by adding fire doors in the roadway. The fire doors need to be manually opened and closed, resulting in a lag in fire prevention. Moreover, the fire doors affect internal transportation, have a poor sealing effect, and are prone to smoke leakage. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a fire prevention structure for coal mines underground to solve the above problems.

[0004] To achieve the above object, the utility model provides a fire prevention structure for coal mines underground, including a sealing wall, the periphery of which is connected to the inner wall of the roadway; a door opening is provided on the sealing wall, and a fire door for closing the door opening is hinged on one side of the sealing wall, and the fire door is controlled to open and close through a telescopic mechanism; one end of the telescopic mechanism is hinged to the side of the fire door away from the door opening, and the other end of the telescopic mechanism is hinged to the inner wall of the roadway; a first flame retardant sealing strip is installed on the side of the sealing wall where the fire door is provided; the first flame retardant sealing strip surrounds the door opening and is located within the coverage range of the fire door; a second flame retardant sealing strip is provided at the bottom of the door opening; and a fire detection mechanism is further included, which is arranged on the inner wall of the roadway and is electrically connected to the telescopic mechanism.

[0005] Further, a water spraying mechanism is further included, which includes a water tank, a water pump and a water spray pipe. The water tank is arranged on the top of the roadway, the water pump is arranged in the water tank and is electrically connected to the fire detection mechanism, the water spray pipe is connected to the water pump, the water spray pipe is located above the first flame retardant sealing strip, and a plurality of nozzles are provided at the bottom of the water spray pipe.

[0006] Further, the fire detection mechanism is composed of a processor, an alarm, a carbon monoxide sensor probe, a carbon dioxide sensor probe, a methane sensor probe, a smoke sensor probe and a temperature sensor probe.

[0007] Further, the top of the second flame retardant sealing strip is arc-shaped.

[0008] Further, the telescopic mechanism adopts an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0009] Further, explosion-proof switches are arranged on the inner walls of the roadway on both sides of the sealing wall, and the explosion-proof switches are electrically connected to the telescopic mechanism.

[0010] The utility model has the following beneficial effects:

[0011] The utility model can realize automatic control, has a fast response speed, does not affect the internal passage and transportation, has a good sealing effect, and can quickly block the spread of coal mine underground fires. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the closed state of a fire prevention structure for coal mine underground proposed by the utility model;

[0013] Figure 2 It is a schematic diagram of the open state of a fire prevention structure for coal mine underground proposed by the utility model.

[0014] In the figure: 1 - roadway; 2 - sealing wall; 3 - fire detection mechanism; 4 - explosion-proof switch; 5 - water spraying mechanism; 6 - fire door; 7 - telescopic mechanism; 21 - first flame retardant sealing strip; 22 - door opening; 23 - second flame retardant sealing strip; 51 - water tank; 52 - water pump; 53 - water spraying pipe; 61 - third flame retardant sealing strip. Specific Embodiments

[0015] To achieve the above purposes and effects, the technical means and structures adopted by the utility model will be described in detail in combination with the drawings for the preferred embodiments of the utility model to illustrate their features and functions.

[0016] As Figure 1-2 shown, the utility model provides a fire prevention structure for coal mine underground, including a sealing wall 2, and the periphery of the sealing wall 2 is connected to the inner wall of the roadway 1; a door opening 22 is provided on the sealing wall 2, and a fire door 6 for closing the door opening 22 is hinged on one side of the sealing wall 2, and the fire door 6 is controlled to open and close by a telescopic mechanism 7; the telescopic mechanism 7 can adopt an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, one end of the telescopic mechanism 7 is hinged to the side of the fire door 6 away from the door opening 22, and the other end of the telescopic mechanism 7 is hinged to the inner wall of the roadway 1; a first flame retardant sealing strip 21 is installed on the side of the sealing wall 2 where the fire door 6 is provided; the first flame retardant sealing strip 21 surrounds the door opening 22 and is located within the coverage of the fire door 6; a second flame retardant sealing strip 23 is provided at the bottom of the door opening 22, which can be closely attached to the irregular area of the roadway sidewall on the one hand, and can prevent poisonous gases from gushing out from the bottom on the other hand; it also includes a fire detection mechanism 3, the fire detection mechanism 3 is provided on the inner wall of the roadway 1, and the fire detection mechanism 3 is electrically connected to the telescopic mechanism 7. In the normal state, the fire door 6 is in the normally open state and does not affect the internal passage and transportation. When the fire detection mechanism 3 detects a fire, it controls the telescopic mechanism 7 to start, pushes the fire door 6 to the closed state, and closely fits with the first flame retardant sealing strip 21 and the second flame retardant sealing strip 23 to prevent the spread of the fire.

[0017] In another embodiment, a water spraying mechanism 5 is further included. The water spraying mechanism 5 includes a water tank 51, a water pump 52 and a water spray pipe 53. The water tank 51 is arranged at the top of the roadway 1. The water pump 52 is arranged in the water tank 51 and electrically connected to the fire detection mechanism 3. The water spray pipe 53 is connected to the water pump 52. The water spray pipe 53 is located above the first flame retardant sealing strip 21. A plurality of nozzles are arranged at the bottom of the water spray pipe 53. When the fire detection mechanism 3 detects a fire, it controls the water pump 52 to start, pumps the water in the water tank 51, and sprays the water from the nozzles of the water spray pipe 53 onto the first flame retardant sealing strip 21 for cooling and sealing to prevent the smoke from leaking out.

[0018] In another embodiment, the fire detection mechanism 3 is composed of a processor, an alarm, a carbon monoxide sensor probe, a carbon dioxide sensor probe, a methane sensor probe, a smoke sensor probe and a temperature sensor probe. When the detection value of any one of the probes exceeds the target set value, the telescopic mechanism 7 and the water pump 52 are controlled by the processor to start, and the alarm gives an alarm.

[0019] In another embodiment, two fire doors 6 are provided, and a third flame retardant sealing strip 61 is arranged at the closing position of one or both of the fire doors 6.

[0020] In another embodiment, the top of the second flame retardant sealing strip 23 is arc-shaped, which can realize sealing and at the same time does not affect normal passage.

[0021] In another embodiment, explosion-proof switches 4 are arranged on the inner walls of the roadway 1 on both sides of the sealing wall 2. The explosion-proof switches 4 are electrically connected to the telescopic mechanism 7, and the explosion-proof switches 4 are provided to facilitate the manual opening and closing of the fire door 6.

[0022] All circuits of the present utility model adopt intrinsically safe circuits.

[0023] The above are only the preferred embodiments of the present utility model, not all embodiments. Anyone should know that any structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A fireproof structure for use in coal mines, characterized in that: It includes a sealing wall, which is connected to the inner wall of the tunnel on all sides; a door opening is opened on the sealing wall, and a fire door for closing the door opening is hinged on one side of the sealing wall, and the fire door is controlled to open and close by a telescopic mechanism; one end of the telescopic mechanism is hinged to the side of the fire door away from the door opening, and the other end of the telescopic mechanism is hinged to the inner wall of the tunnel; a first flame retardant sealing strip is installed on the side of the sealing wall where the fire door is provided; the first flame retardant sealing strip is provided around the door opening and is located within the coverage range of the fire door; a second flame retardant sealing strip is provided at the bottom of the door opening; it also includes a fire detection mechanism, which is provided on the inner wall of the tunnel and is electrically connected to the telescopic mechanism.

2. A fireproof structure for use in coal mines as claimed in claim 1, characterized in that: It also includes a water spray mechanism, which includes a water tank, a water pump and a water spray pipe. The water tank is arranged at the top of the tunnel, the water pump is arranged in the water tank and is electrically connected to the fire detection mechanism, the water spray pipe is connected to the water pump, the water spray pipe is located above the first flame retardant sealing strip, and a plurality of nozzles are arranged at the bottom of the water spray pipe.

3. A fireproof structure for use in coal mines as claimed in claim 2, characterized in that: The fire detection mechanism is composed of a processor, an alarm, a carbon monoxide sensor probe, a carbon dioxide sensor probe, a methane sensor probe, a smoke sensor probe and a temperature sensor probe.

4. A fireproof structure for use in coal mines as claimed in claim 1, characterized in that: The top of the second flame retardant sealing strip is arc-shaped.

5. A fireproof structure for use in coal mines as claimed in claim 1, characterized in that: The telescopic mechanism adopts an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

6. A fireproof structure for use in coal mines as claimed in claim 1, characterized in that: Explosion-proof switches are arranged on the inner walls of the lanes on both sides of the sealing wall, and the explosion-proof switches are electrically connected to the telescopic mechanism.

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