Active explosion suppression device

Abstract

The active explosion suppression device comprises a high-pressure gas cavity, a flow dividing disc, a fire extinguishing agent bin and a spray head which are sequentially connected, an explosion venting piece and an excitation pipe are arranged between the flow dividing disc and the high-pressure gas cavity, the explosion venting piece is used for sealing an outlet of the high-pressure gas cavity, and the excitation pipe is located in the flow dividing disc and right faces the center position of the explosion venting piece. And the excitation tube is used for breaking the explosion venting sheet. According to the utility model, the explosion venting sheet can be conveniently and quickly broken, so that the active explosion isolating and suppressing device can spray out a fire extinguishing medium at the speed of less than 15ms.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion suppression equipment, in particular to an active explosion isolation and suppression device. Background Art

[0002] In tunnels underground in coal mines where there is a risk of gas or coal dust explosions, explosion suppressors can be installed to promptly detect unsafe factors and dangerous situations, and can respond quickly when an explosion occurs, forming a mist-like explosion-proof area by spraying fire-extinguishing media.

[0003] The existing explosion suppressor mainly installs the gas generator at one end of the fire extinguishing agent tank, and a sealing diaphragm is provided at the other end of the fire extinguishing agent tank. By triggering the gas generator, high-pressure gas is generated, and the high-pressure gas drives the fire extinguishing agent to rush open the sealing diaphragm. The opening rate of the sealing diaphragm of this structure needs to be further improved. Utility Model Content

[0004] The utility model provides an active explosion-isolating and suppressing device, which is convenient for quickly breaking the explosion-discharging plate, so that the active explosion-isolating and suppressing device can spray out the fire extinguishing medium at a speed of less than 15ms.

[0005] The technical solution of the present utility model is implemented as follows: an active explosion-isolating and suppressing device includes a high-pressure air cavity, a diverter plate, a fire extinguishing agent tank and a nozzle connected in sequence, an explosion-venting plate and an excitation tube are arranged between the diverter plate and the high-pressure air cavity, the explosion-venting plate is used to close the outlet of the high-pressure air cavity, the excitation tube is located in the diverter plate and is directly opposite to the center of the explosion-venting plate, and the excitation tube is used to break the explosion-venting plate.

[0006] Furthermore, a mechanical pressure switch is provided on the high-pressure gas cavity, and the mechanical pressure switch is used to monitor the gas pressure state in the high-pressure gas cavity in real time.

[0007] Furthermore, a high-pressure ball valve is provided on the high-pressure air cavity, one end of the high-pressure ball valve is connected to the inflation nozzle, and the other end is connected to the high-pressure air cavity.

[0008] Furthermore, the excitation tube and the mechanical pressure switch are connected to the intrinsically safe junction box through a communication cable, the intrinsically safe junction box is connected to the controller through a communication cable, the controller is connected to the shock wave pressure sensor, and the controller is connected to the terminal through a wireless module.

[0009] Furthermore, the controller is connected to the emergency stop button.

[0010] Beneficial effects of the utility model:

[0011] The utility model arranges the laser tube in the diverter plate and faces the center of the explosion relief plate, so as to quickly break the explosion relief plate and enable the active explosion isolation and suppression device to spray the fire extinguishing medium at a speed of less than 15ms.

[0012] The utility model is convenient for real-time monitoring of the air pressure state in the high-pressure air cavity by setting a mechanical pressure switch, and replenishing gas to the high-pressure air cavity in time.

[0013] The excitation tube and the mechanical pressure switch of the utility model are both connected to the controller, which is convenient for remote monitoring and triggering; and the setting of the emergency stop button is convenient for manual triggering in an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the active explosion suppressor and the controller. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 and 2 As shown, an active explosion-proof device includes a high-pressure air chamber 1, a diverter plate 2, a fire extinguishing agent tank 3 and a nozzle 4 connected in sequence. An explosion-proof plate 5 and an excitation tube 6 are fixed between the diverter plate 2 and the high-pressure air chamber 1. The explosion-proof plate 5 is used to close the outlet of the high-pressure air chamber 1. The excitation tube 6 is located in the diverter plate 2. The excitation tube 6 can be a blasting tube, an instantaneous detonator, etc.

[0019] A mechanical pressure switch (not shown in the figure) is installed at the tail of the high-pressure gas cavity 1. The mechanical pressure switch can be purchased on the market. The model is PS20-QD. It is a passive dry node signal and the pressure threshold can be set. The mechanical pressure switch is used to monitor the air pressure status in the high-pressure gas cavity 1 in real time. The high-pressure gas cavity 1 is a high-pressure nitrogen cavity.

[0020] Both the excitation tube 6 and the mechanical pressure switch are connected to an intrinsically safe junction box via a communication cable. The intrinsically safe junction box is connected to a controller via a communication cable, which is in turn connected to the shock wave pressure sensor, a CPU-based controller. The shock wave pressure sensor collects the shock wave signal and transmits it to the controller. If the shock wave signal threshold is 4 kPa or 5 kPa, and the shock wave signal threshold exceeds 5 kPa, the controller issues an electrical signal to activate the active explosion suppression device to spray the fire extinguishing medium. If the shock wave signal threshold is less than 4 kPa, the controller does not output an electrical signal.

[0021] After the excitation tube 6 receives the electrical signal from the controller, the excitation tube 6 breaks the explosion venting plate 5, and the high-pressure gas in the high-pressure gas chamber 1 enters the fire extinguishing agent bin 3 through the diverter plate 2, and drives the fire extinguishing agent to be sprayed out through the nozzle 4. Through the cooperation of the excitation tube 6 and the explosion venting plate 5, the active explosion isolation and suppression device can spray the fire extinguishing medium at a speed of less than 15ms, forming an effective flame and explosion suppression mist surface, thereby preventing the further spread of the flame generated by the explosion and combustion.

[0022] When the pressure within high-pressure air chamber 1 is lower than or higher than a set value, a corresponding switching signal is output to the controller, which transmits the signal to the terminal via a wireless module. High-pressure air chamber 1 is equipped with a high-pressure ball valve 7, one end of which is connected to an inflation nozzle 8 and the other end to high-pressure air chamber 1. To inflate high-pressure air chamber 1, the ball valve 7 is opened, and air is introduced into the chamber through inflation nozzle 8.

[0023] The controller is connected to the emergency stop button. Through the emergency button, when on-site inspection personnel promptly discover that the underground environment of the coal mine has a tendency to burn or explode, and the explosion shock wave has not yet formed, the inspection personnel can drive the active explosion isolation and suppression device by pressing the emergency button, thereby suppressing the occurrence of combustion and explosion.

[0024] The controller is connected to the terminal through a wireless module. The terminal can be a computer, mobile phone, etc. The wireless module is a wireless LoRa module. The controller sends data to the terminal through the wireless module, which facilitates real-time data collection, analysis and early warning, and can realize unmanned operation in the on-site environment.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An active explosion suppression device, characterized by: It includes a high-pressure air cavity, a diverter plate, a fire extinguishing agent tank and a nozzle connected in sequence. An explosion-proof plate and an excitation tube are arranged between the diverter plate and the high-pressure air cavity. The explosion-proof plate is used to close the outlet of the high-pressure air cavity. The excitation tube is located in the diverter plate and is opposite to the center of the explosion-proof plate. The excitation tube is used to break the explosion-proof plate.

2. The active explosion suppressor according to claim 1, characterized in that: A mechanical pressure switch is provided on the high-pressure gas cavity, which is used to monitor the gas pressure state in the high-pressure gas cavity in real time.

3. An active explosion suppressor according to claim 1 or 2, characterized in that: A high-pressure ball valve is provided on the high-pressure air cavity. One end of the high-pressure ball valve is connected to the inflation nozzle, and the other end is connected to the high-pressure air cavity.

4. An active explosion suppressor according to claim 1 or 2, characterized in that: The excitation tube and the mechanical pressure switch are connected to the intrinsically safe junction box through a communication cable, the intrinsically safe junction box is connected to the controller through a communication cable, the controller is connected to the shock wave pressure sensor, and the controller is connected to the terminal through a wireless module.

5. The active explosion suppressor according to claim 4, characterized in that: The controller is connected to the emergency stop button.

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