Pressure storage active type rapid electric control two-way explosion-proof fire extinguishing device

Abstract

A pressure storage active type rapid electric control bidirectional explosion-proof fire extinguishing device comprises an explosion-proof fire extinguishing main body and two groups of shock wave triggering mechanisms, and the two groups of shock wave triggering mechanisms are symmetrically arranged at two ends of the explosion-proof fire extinguishing main body; the explosion-proof fire extinguishing main body comprises a gas storage bin and a powder storage bin, the gas storage bin and the powder storage bin are respectively mounted at the top of a protection area through a main body mounting frame, and one end of the powder storage bin is butted with one end part of the gas storage bin; in conclusion, the explosion-proof and fire-extinguishing device mainly comprises the explosion-proof and fire-extinguishing main body and the two groups of shock wave triggering mechanisms, and the two groups of shock wave triggering mechanisms can be started from two directions, so that the unpredictability of an explosion source is avoided; in addition, the shock wave triggering mechanism has three starting modes, namely explosion shock wave starting, flame signal detection starting and explosion pressure signal detection, so that the normal use function of the product is greatly improved; compared with a one-way starting device on the market, the device has the advantages that explosion sources are prevented more comprehensively, the speed is higher, all-around protection is achieved, flames are extinguished, and meanwhile secondary explosion is restrained.

Description

Technical Field

[0001] The invention belongs to the technical field of explosion-proofing in coal mine tunnels, dusty places and flammable and explosive gas places, and specifically relates to a pressure storage active fast electric-controlled two-way explosion-proof fire extinguishing device. Background Art

[0002] Most of the existing automatic explosion-proof devices are one-way, passive, and mechanically triggered. When installed in an underground tunnel, the large-diameter end is the powder spray port and the small-diameter end is the trigger device. The trigger device is connected to the push rod through a thread, and a shock wave receiving plate is installed at the end of the push rod. Only when an explosion in the tunnel occurs on the side where the shock wave receiving plate is installed, can the explosion shock wave push the shock wave receiving plate to trigger the automatic explosion-proof device. If the explosion occurs on the opposite side of the shock wave receiving plate, the automatic explosion-proof device cannot be triggered or the triggering is delayed, causing the automatic explosion-proof device to fail to achieve the effect of explosion-proof and fire extinguishing. In addition, the existing automatic explosion-proof device startup method only relies on the explosion shock wave, the startup method is passive, and cannot participate in the intelligent monitoring system, and the prevention of explosion sources is not comprehensive enough. Summary of the invention

[0003] The present invention aims to provide a pressure storage active fast electric-controlled two-way explosion-proof fire extinguishing device to solve the technical problems existing in the existing automatic explosion-proof devices.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A pressure storage active fast electric control two-way explosion-proof fire extinguishing device, comprising an explosion-proof fire extinguishing body and two sets of shock wave triggering mechanisms, wherein the two sets of shock wave triggering mechanisms are symmetrically arranged at both ends of the explosion-proof fire extinguishing body;

[0006] The explosion-proof fire extinguishing body includes an air storage bin and a powder storage bin, which are respectively installed on the top of the protection area through the main body mounting frame, one end of the powder storage bin is connected to one end of the air storage bin, and a pressure relief port is provided at the joint between the air storage bin and the powder storage bin, and an explosion-proof trigger and a pressure diaphragm are installed at the pressure relief port; the other end of the powder storage bin is connected to a sealing film through a clamping flange, and dry powder is contained in the powder storage bin; a dryness and humidity sensor is installed on the powder storage bin, and a pressure gauge, an air charging valve and a pressure sensor are installed on the air storage bin;

[0007] The shock wave trigger mechanism comprises a shock wave receiving plate, a guide rod and a flameproof housing, wherein the flameproof housing is installed on the top of the protection area through a bracket, a lithium battery and a first copper block are installed in the flameproof housing, a docking guide sleeve is also fixed on the flameproof housing, a reducing through hole is arranged in the docking guide sleeve, and the reducing through hole is composed of a spring assembly hole body, a middle hole body and a limit hole body, the guide rod is penetrated in the reducing through hole, a connecting sleeve is fixed at one end of the guide rod, the other end of the guide rod is inserted into the flameproof housing and connected with the second copper block, a force storage spring and a limiting ring are arranged on the guide rod, the limiting ring is located in the limiting hole body, the force storage spring is located in the spring assembly hole body, and one end of the force storage spring abuts against the connecting sleeve; an annular lock key groove is opened on the outer wall of the middle part of the guide rod;

[0008] A mounting hole is provided on the butt guide sleeve, a locking key is provided in the mounting hole, the locking key comprises a compression spring and a slotted cone end set screw, the compression spring acts on the slotted cone end set screw, so that the end of the slotted cone end set screw is in top pressure contact with the outer wall of the guide rod;

[0009] The shock wave receiving plate is installed on the connecting sleeve through threads; the lithium battery is used to power the explosion-proof trigger, the first copper block and the second copper block are arranged on the power supply circuit of the explosion-proof trigger, and when the first copper block and the second copper block are in contact, the explosion-proof trigger is started.

[0010] Furthermore, the pressure storage active fast electric control two-way explosion-proof fire extinguishing device also includes a controller, which is arranged in the explosion-proof casing. Each set of shock wave triggering mechanism also includes a flame sensor, which is installed on the shock wave receiving plate. The controller is respectively connected to the flame sensor and the explosion-proof trigger.

[0011] Furthermore, the first copper block is mounted on a pressure sensing module, and the controller is connected to the pressure sensing module and the explosion-proof trigger respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention mainly comprises an explosion-proof fire extinguishing body and two sets of shock wave trigger mechanisms, the two sets of shock wave trigger mechanisms can be started from two directions, thereby avoiding the unpredictability of the explosion source; in addition, the shock wave trigger mechanism has three starting modes, namely explosion shock wave starting, flame signal detection starting and explosion pressure signal detection, thereby greatly improving the normal use function of the product; the present invention has an intelligent detection function, and can transmit the device air cavity pressure, fire extinguishing powder dryness and humidity, flame, and shock wave pressure data signals to a host computer through RS485 signal / optical fiber / Ethernet, thereby monitoring the operation of the device in real time; the explosion-proof trigger is powered by a backup explosion-proof lithium battery, and the lithium battery is installed in a flameproof housing, which is safer.

[0013] In short, compared with the one-way starting devices on the market, the present invention is safer, more comprehensive in preventing explosion sources, faster, and provides all-round protection, which can extinguish flames while suppressing secondary explosions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a structural schematic diagram of a pressure storage active fast electric-controlled two-way explosion-proof fire extinguishing device of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the shock wave trigger mechanism. 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 described embodiments 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] The present invention is further described in detail below in conjunction with embodiments.

[0019] like Figure 1 and Figure 2 As shown, a specific embodiment of a pressure storage active fast electric control two-way explosion-proof fire extinguishing device provided by the present invention is:

[0020] A pressure storage active fast electric control two-way explosion-proof fire extinguishing device, comprising an explosion-proof fire extinguishing body 100 and two sets of shock wave triggering mechanisms 101, wherein the two sets of shock wave triggering mechanisms 101 are symmetrically arranged at both ends of the explosion-proof fire extinguishing body 100;

[0021] The explosion-proof fire extinguishing body 100 includes an air storage bin 1 and a powder storage bin 2, which are respectively installed on the top of the protection area through a main body mounting frame 3, one end of the powder storage bin 2 is connected to one end of the air storage bin 1, and a pressure relief port 4 is provided at the joint between the air storage bin 1 and the powder storage bin 2, and an explosion-proof trigger 5 and a pressure diaphragm 6 are installed at the pressure relief port 4; the other end of the powder storage bin 2 is connected to a sealing film 8 through a clamping flange 7, and the powder storage bin 2 is filled with dry powder; a dryness and humidity sensor 9 is installed on the powder storage bin 2, and a pressure gauge 10, an inflation valve 11 and a pressure sensor 12 are installed on the air storage bin 1; the dryness and humidity sensor 9 is used to monitor the dryness and humidity of the fire extinguishing powder in the powder storage bin 2, the pressure gauge 10 is used to display the air cavity pressure in the air storage bin 1, and the inflation valve 11 is used to rush high-pressure gas into the air storage bin 1.

[0022] The shock wave trigger mechanism 101 includes a shock wave receiving plate 13, a guide rod 14 and a flameproof housing 15. The flameproof housing 15 is installed on the top of the protection area through a bracket 16. A lithium battery 17 and a first copper block 18 are installed in the flameproof housing 15. A docking guide sleeve 19 is also fixed on the flameproof housing 15. A reducing through hole is arranged in the docking guide sleeve 19. The reducing through hole is composed of a spring assembly hole body 21, a middle hole body 22 and a limiting hole body 23. The guide rod 14 is penetrated in the reducing through hole. A connecting sleeve 24 is fixed at one end of the guide rod 14. The other end of the guide rod 14 is inserted into the flameproof housing 15 and connected with the second copper block 25. A force storage spring 26 and a limiting ring 27 are arranged on the guide rod 14. The limiting ring 27 is located in the limiting hole body 23. The force storage spring 26 is located in the spring assembly hole body 21, and one end of the force storage spring 26 abuts against the connecting sleeve 24. An annular lock key groove 28 is opened on the outer wall of the middle part of the guide rod 14.

[0023] A mounting hole is provided on the docking guide sleeve 19, and a locking key is provided in the mounting hole. The locking key includes a compression spring 29 and a slotted cone-end set screw 30. The compression spring 29 acts on the slotted cone-end set screw 30, so that the end of the slotted cone-end set screw 30 is pressed against the outer wall of the guide rod 14.

[0024] The shock wave receiving plate 13 is installed on the connecting sleeve 24 by threads; the lithium battery 17 is used to power the explosion-proof trigger 5, the first copper block 18 and the second copper block 25 are arranged on the power supply circuit of the explosion-proof trigger 5, and when the first copper block 18 and the second copper block 25 are in contact, the explosion-proof trigger 5 is started.

[0025] Since the direction of the explosion source in the coal mine tunnel is uncertain, the two groups of shock wave trigger mechanisms 101 implemented in this embodiment can be started from both positive and negative directions. When the explosion propagates from the front of A, one group of shock wave trigger mechanisms 101 can be started in the forward direction, and the dry powder fire extinguishing agent in the powder storage bin 2 can be quickly sprayed out within 15ms, forming an explosion-proof fire extinguishing medium barrier in front, extinguishing the flames while suppressing the further spread of the explosion; when the explosion propagates from the front of B, the other group of shock wave trigger mechanisms 101 can be started in the reverse direction, and the dry powder fire extinguishing agent in the powder storage bin 2 can be quickly sprayed out within 15ms, and an 8m fire extinguishing medium barrier can be quickly formed within 120ms. 2 The explosion-proof surface can be up to 15m away, forming an explosion-proof fire-extinguishing medium barrier in front, which can extinguish the flames and suppress the further spread of the explosion.

[0026] The fire extinguishing principle of the shock wave trigger mechanism 101 and the explosion-proof fire extinguishing body 100 is as follows: the explosion shock wave propagates from the A side, the shock wave receiving plate 13 receives the explosion pressure, and overcomes the elastic force of the storage spring 26 to push the guide rod 14 to move, so that the second copper block 25 moves toward the first copper block 18, and the two finally contact each other, and the power supply circuit of the explosion-proof trigger 5 is connected, and the lithium battery 17 is connected as a power source to power the explosion-proof trigger 5, and the explosion-proof trigger 5 starts to explode and open the pressure diaphragm 6, and the 12Mpa pressure in the gas storage bin 1 is rapidly ejected into the powder storage bin 2, pushing the dry powder in the powder storage bin 2 to spray forward, forming a fire extinguishing barrier, and suppressing the occurrence of explosions. In addition, during the movement of the guide rod 14, the slotted cone end locking screw 30 of the lock key slides from the outer wall of the guide rod 14 into the lock key slot 28, locking the moving guide rod 14 and limiting the movement of the guide rod 14.

[0027] When the explosion shock wave propagates from the B side, the working principle is the same; the pressure storage active fast electric-controlled two-way explosion-proof fire extinguishing device of this embodiment is applied to coal mine tunnels, and the equipment can also be applied to high-risk industries of industrial dust. It can be deployed all around to provide all-round protection, extinguishing the flames while suppressing secondary explosions.

[0028] As other embodiments of the present invention, the above-mentioned embodiments start the explosion-proof fire extinguishing body 100 through the explosion shock wave. This embodiment also provides a method of starting with an explosion flame signal and an explosion shock wave pressure signal. Specifically, the pressure storage active fast electric control two-way explosion-proof fire extinguishing device also includes a controller 31. The controller 31 is arranged in the explosion-proof casing 15. Each group of shock wave triggering mechanisms 101 also includes a flame sensor 32 and a pressure sensing module 33. The flame sensor 32 is installed on the shock wave receiving plate 13, and the first copper block 18 is installed on the pressure sensing module 33. The controller 31 is respectively connected to the flame sensor 32, the pressure sensing module 33 and the explosion-proof trigger 5.

[0029] The explosion flame signal is started in the following manner: when the explosion flame propagates from the A side, the flame sensor 32 receives the explosion flame signal, and after rapid calculation by the controller 31, the output end outputs a power signal to power the explosion-proof trigger 5, and the explosion-proof trigger 5 explodes to open the pressure diaphragm 6, and the 12Mpa pressure in the gas storage bin 1 is rapidly ejected, pushing the dry powder in the powder storage bin 2 to spray forward, forming a fire extinguishing barrier to suppress the occurrence of explosions.

[0030] The explosion shock wave pressure signal is started as follows: when the explosion shock wave propagates from the A side, the shock wave receiving disk 13 receives the explosion pressure, and the shock wave receiving disk 13 pushes the guide rod 14 to move forward. Under the push of the guide rod 14, the first copper block 18 and the second copper block 25 move and contact each other, and the two contact each other to generate impact pressure. When the pressure sensing module 33 detects that the pressure value is ≥25kpa, the controller 31 quickly calculates and the output end outputs a power signal to the explosion-proof trigger 5 to start the explosion and open the pressure diaphragm 6. The 12Mpa pressure in the gas storage bin 1 is quickly ejected, pushing the dry powder in the powder storage bin 2 to spray forward, forming a fire extinguishing barrier to suppress the occurrence of explosions.

[0031] When the explosion flame spreads from the B side, the working principle is the same.

[0032] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure storage active fast electric control two-way explosion-proof fire extinguishing device, characterized in that: It includes an explosion-proof fire extinguishing body and two sets of shock wave triggering mechanisms, and the two sets of shock wave triggering mechanisms are symmetrically arranged at both ends of the explosion-proof fire extinguishing body; The explosion-proof fire extinguishing body includes an air storage bin and a powder storage bin, which are respectively installed on the top of the protection area through the main body mounting frame, one end of the powder storage bin is connected to one end of the air storage bin, and a pressure relief port is provided at the joint between the air storage bin and the powder storage bin, and an explosion-proof trigger and a pressure diaphragm are installed at the pressure relief port; the other end of the powder storage bin is connected to a sealing film through a clamping flange, and dry powder is contained in the powder storage bin; a dryness and humidity sensor is installed on the powder storage bin, and a pressure gauge, an air charging valve and a pressure sensor are installed on the air storage bin; The shock wave trigger mechanism comprises a shock wave receiving plate, a guide rod and a flameproof housing, wherein the flameproof housing is installed on the top of the protection area through a bracket, a lithium battery and a first copper block are installed in the flameproof housing, a docking guide sleeve is also fixed on the flameproof housing, a reducing through hole is arranged in the docking guide sleeve, and the reducing through hole is composed of a spring assembly hole body, a middle hole body and a limit hole body, the guide rod is penetrated in the reducing through hole, a connecting sleeve is fixed at one end of the guide rod, the other end of the guide rod is inserted into the flameproof housing and connected with the second copper block, a force storage spring and a limiting ring are arranged on the guide rod, the limiting ring is located in the limiting hole body, the force storage spring is located in the spring assembly hole body, and one end of the force storage spring abuts against the connecting sleeve; an annular lock key groove is opened on the outer wall of the middle part of the guide rod; A mounting hole is provided on the butt guide sleeve, a locking key is provided in the mounting hole, the locking key comprises a compression spring and a slotted cone end set screw, the compression spring acts on the slotted cone end set screw, so that the end of the slotted cone end set screw is in top pressure contact with the outer wall of the guide rod; The shock wave receiving plate is installed on the connecting sleeve through threads; the lithium battery is used to power the explosion-proof trigger, the first copper block and the second copper block are arranged on the power supply circuit of the explosion-proof trigger, and when the first copper block and the second copper block are in contact, the explosion-proof trigger is started.

2. According to claim 1, a pressure storage active rapid electric control two-way explosion-proof fire extinguishing device is characterized in that: It also includes a controller, which is arranged in the flameproof housing. Each set of shock wave trigger mechanisms also includes a flame sensor, which is installed on the shock wave receiving disk. The controller is connected to the flame sensor and the flameproof trigger respectively.

3. According to claim 2, a pressure storage active rapid electric control two-way explosion-proof fire extinguishing device is characterized in that: The first copper block is mounted on the pressure sensing module, and the controller is connected to the pressure sensing module and the flameproof trigger respectively.

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