Active rapid bidirectional electric control mining explosion-proof device with standby power and ultra-long standby time

Abstract

An ultra-long standby active rapid bidirectional electric control mining explosion-proof device with standby power comprises an explosion-proof fire extinguishing main body and two groups of shock wave trigger mechanisms, and the two groups of shock wave trigger mechanisms are symmetrically arranged at two ends of the explosion-proof fire extinguishing main body; the shock wave triggering mechanism comprises a shock wave receiving disc, a guide rod and an explosion-proof shell, and the explosion-proof shell is installed at the top of the protection area through a support; in conclusion, the lithium battery is adopted for supplying power, reliable starting can be guaranteed even under the power failure condition, when the distance between the limiting sensor male head and the limiting sensor female head is smaller than 2 mm, the electronic trigger can be rapidly started and release the dry powder extinguishing agent within 15 ms, an effective explosion-proof barrier is formed, and explosion spreading is restrained; the explosion-proof device not only solves the limitation of one-way triggering of a traditional explosion-proof device, but also greatly improves the response speed and reliability, is suitable for coal mine tunnels and other industrial dust high-risk environments, provides all-around guarantee for safety production, and effectively reduces the harm of explosion accidents.

Description

Technical Field

[0001] This utility model belongs to the field of explosion-proof technology, specifically relating to a self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof device for mining. Background Technology

[0002] Currently, automatic explosion-proof devices are widely used in the field of mine safety to improve mine safety. However, most existing automatic explosion-proof devices adopt unidirectional, passive, and mechanical triggering mechanisms, which limits their effectiveness and applicability. Specifically, these devices are typically designed with a large-diameter end as a powder injection port and a small-diameter end equipped with a triggering device. The triggering device is connected to a push rod via threads, and a shock wave receiving plate is installed at the end of the push rod. This design can only effectively trigger the explosion-proof device when the explosion occurs on one side of the shock wave receiving plate. If the explosion occurs in the opposite direction, the device cannot be triggered in a timely or complete manner, resulting in poor explosion-proof fire extinguishing effect or even failure.

[0003] In addition, while some electrically controlled explosion-proof devices exist on the market, they offer more flexible control methods but require extensive wiring, increasing costs and complicating installation. More importantly, these devices rely on external power supplies and lack their own backup power, making it difficult to guarantee stable operation over extended periods, especially in emergency situations. Utility Model Content

[0004] The present invention aims to provide a self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof device for mining, which solves the technical problems existing in the current electrically controlled explosion-proof devices.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An active, fast, bidirectional, electrically controlled explosion-proof mining device with self-contained backup power and ultra-long standby time includes an explosion-proof fire extinguishing body and two sets of shock wave triggering mechanisms, which are symmetrically arranged at both ends of the explosion-proof fire extinguishing body.

[0007] The shock wave triggering mechanism includes a shock wave receiving disk, a guide rod, and an explosion-proof housing. The explosion-proof housing is mounted on the top of the protected area via a bracket. A lithium battery, a limit sensor male connector, and a controller are installed inside the explosion-proof housing. A docking guide sleeve is also fixed to the explosion-proof housing. A variable-diameter through-hole is provided inside the docking guide sleeve, which consists of a spring assembly hole, a central hole, and a limit hole. The guide rod passes through the variable-diameter through-hole. One end of the guide rod is fixed with a connecting sleeve, and the other end of the guide rod is inserted into the explosion-proof housing and connected to the limit sensor female connector. A storage spring and a limit ring are provided on the guide rod. The limit ring is located inside the limit hole, and the storage spring is located inside the spring assembly hole, with one end of the storage spring abutting against the connecting sleeve. An annular locking keyway is formed on the outer wall of the middle part of the guide rod.

[0008] An installation hole is provided on the guide sleeve, and a locking key is provided in the installation hole. The locking key includes a compression spring and a slotted conical end set screw. The compression spring acts on the slotted conical end set screw, so that the end of the slotted conical end set screw is pressed into contact with the outer wall of the guide rod.

[0009] The shock wave receiving disk is threaded onto the connecting sleeve; the lithium battery is used to power the electronic trigger; the male and female limit sensor heads are set on the power supply circuit of the electronic trigger; and the electronic trigger is activated when the distance between the male and female limit sensor heads is less than 2mm.

[0010] The controller is connected to the male limit sensor, the female limit sensor, and the electronic trigger, respectively.

[0011] Furthermore, the explosion-proof fire extinguishing unit includes a gas storage chamber and a dry powder chamber. The gas storage chamber and the dry powder chamber are respectively installed on the top of the protected area via the main mounting frame. One end of the dry powder chamber is connected to one end of the gas storage chamber. A pressure relief port is provided at the connection between the gas storage chamber and the dry powder chamber. An electronic trigger and a pressure diaphragm are installed at the pressure relief port. The other end of the dry powder chamber is connected to a sealing membrane via a clamping flange. The dry powder chamber contains dry powder. A pressure gauge, an inflation valve, and a pressure sensor are installed on the gas storage chamber.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model provides a self-contained, long-standby, active, rapid, bidirectional electrically controlled explosion-proof device for mines. By symmetrically arranging two sets of shock wave triggering mechanisms at both ends of the explosion-proof fire extinguishing body, it achieves rapid response and fire extinguishing of explosion shock waves from any direction. The device is powered by a lithium battery, ensuring reliable start-up even in the event of a power outage. The design of the male and female limit sensor heads allows the electronic trigger to start rapidly within 15ms when the distance between them is less than 2mm, releasing dry powder extinguishing agent to form an effective explosion barrier and suppress the spread of the explosion. In addition, the locking mechanism ensures stable locking after the guide rod moves, preventing false activation. This design not only solves the limitations of unidirectional triggering in traditional explosion-proof devices but also greatly improves response speed and reliability. It is suitable for coal mine roadways and other high-risk industrial dust environments, providing comprehensive protection for safe production and effectively reducing the hazards of explosion accidents. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof mining device with backup power.

[0015] Figure 2 This is a schematic diagram of the shock wave triggering mechanism. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The present invention will be further described in detail below with reference to the embodiments.

[0018] like Figure 1 and Figure 2 As shown, a specific embodiment of the self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof mining device with backup power is provided by this utility model:

[0019] An active, fast, bidirectional, electrically controlled explosion-proof mining device with self-contained backup power and ultra-long standby time includes an explosion-proof fire extinguishing main body 100 and two sets of shock wave triggering mechanisms 101, which are symmetrically arranged at both ends of the explosion-proof fire extinguishing main body 100.

[0020] The explosion-proof fire extinguishing unit 100 includes a gas storage chamber 1 and a dry powder chamber 2. The gas storage chamber 1 and the dry powder chamber 2 are respectively installed on the top of the protected area via the main body mounting frame 3. One end of the dry powder chamber 2 is connected to one end of the gas storage chamber 1. A pressure relief port 4 is provided at the connection between the gas storage chamber 1 and the dry powder chamber 2. An electronic trigger 5 and a pressure diaphragm 6 are installed at the pressure relief port 4. The other end of the dry powder chamber 2 is connected to a sealing membrane 8 via a clamping flange 7. The dry powder chamber 2 contains dry powder. A pressure gauge 10, an inflation valve 11, and a pressure sensor 12 are installed on the gas storage chamber 1. The pressure gauge 10 is used to display the pressure of the gas chamber inside the gas storage chamber 1, and the inflation valve 11 is used to inject high-pressure gas into the gas storage chamber 1.

[0021] The shock wave triggering mechanism 101 includes a shock wave receiving disk 13, a guide rod 14, and an explosion-proof housing 15. The explosion-proof housing 15 is mounted on the top of the protected area via a bracket 16. A lithium battery 17, a limit sensor male connector 18, and a controller 31 are installed inside the explosion-proof housing 15. A docking guide sleeve 19 is also fixed on the explosion-proof housing 15. A variable-diameter through hole is provided inside the docking guide sleeve 19, which is composed of a spring mounting hole 21, a central hole 22, and a limit hole 23. The guide rod... 14 is inserted into the variable diameter through hole. One end of the guide rod 14 is fixed with a connecting sleeve 24. The other end of the guide rod 14 is inserted into the explosion-proof housing 15 and connected to the limit sensor female head 25. The guide rod 14 is provided with a storage spring 26 and a limit ring 27. The limit ring 27 is located in the limit hole 23, and the storage spring 26 is located in the spring assembly hole 21. One end of the storage spring 26 abuts against the connecting sleeve 24. The outer wall of the middle part of the guide rod 14 is provided with an annular locking keyway 28.

[0022] An installation hole is provided on the guide sleeve 19, and a locking key is provided in the installation hole. The locking key includes a compression spring 29 and a slotted conical end set screw 30. The compression spring 29 acts on the slotted conical end set screw 30, so that the end of the slotted conical end set screw 30 is pressed into contact with the outer wall of the guide rod 14.

[0023] The shock wave receiving disk 13 is threaded onto the connecting sleeve 24; the lithium battery 17 is used to power the electronic trigger 5; the limit sensor male head 18 and the limit sensor female head 25 are set on the power supply circuit of the electronic trigger 5; and the electronic trigger 5 is activated when the distance between the limit sensor male head 18 and the limit sensor female head 25 is less than 2mm.

[0024] The controller 31 is connected to the male limit sensor 18, the female limit sensor 25, and the electronic trigger 5, respectively.

[0025] Because the direction of the explosion source in the coal mine roadway is unpredictable, the two sets of shock wave triggering mechanisms 101 in this implementation can be activated from both directions. When the explosion propagates from the front (A), one set of shock wave triggering mechanisms 101 can be activated in the forward direction, rapidly spraying the dry powder extinguishing agent in the dry powder chamber 2 within 15ms to form an explosion-proof extinguishing medium barrier in front, extinguishing the flames while suppressing the further propagation of the explosion. When the explosion propagates from the front (B), the other set of shock wave triggering mechanisms 101 can be activated in the reverse direction, rapidly spraying the dry powder extinguishing agent in the dry powder chamber 2 within 15ms, rapidly forming an 8m² explosion-proof surface within 120ms, with a distance of up to 15m, forming an explosion-proof extinguishing medium barrier in front, extinguishing the flames while suppressing the further propagation of the explosion.

[0026] The extinguishing principle of the shock wave triggering mechanism 101 and the explosion-proof fire extinguishing body 100 is as follows: The explosion shock wave propagates from side A, and the shock wave receiving plate 13 receives the explosion pressure. Under the action of the spring force of the storage spring 26, it pushes the guide rod 14 to move, so that the limit sensor female head 25 moves towards the limit sensor male head 18. When the two are 2mm apart, the power supply circuit of the electronic trigger 5 is connected, and the lithium battery 17 is connected as the power source to supply power to the electronic trigger 5. The electronic trigger 5 is activated to open the pressure diaphragm 6. The 12Mpa pressure in the gas storage chamber 1 is quickly sprayed into the dry powder chamber 2, which pushes the dry powder in the dry powder chamber 2 to spray forward, forming a fire extinguishing barrier and suppressing the explosion. In addition, during the movement of the guide rod 14, the slotted cone end set screw 30 of the locking key slides from the outer wall of the guide rod 14 into the locking key groove 28, locking the moving guide rod 14 and restricting the movement of the guide rod 14.

[0027] When the shock wave from the explosion propagates from side B, the working principle remains the same. The pressure-storage active rapid electric control bidirectional explosion-proof fire extinguishing device in this embodiment is applied to coal mine roadways. At the same time, the equipment can also be applied to industries with high-risk industrial dust. It can be deployed on all sides to provide all-round protection, extinguishing flames while suppressing secondary explosions.

[0028] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof device for mining, characterized in that: It includes an explosion-proof fire extinguishing body and two sets of shock wave triggering mechanisms, with the two sets of shock wave triggering mechanisms symmetrically arranged at both ends of the explosion-proof fire extinguishing body; The shock wave triggering mechanism includes a shock wave receiving disk, a guide rod, and an explosion-proof housing. The explosion-proof housing is mounted on the top of the protected area via a bracket. A lithium battery, a limit sensor male connector, and a controller are installed inside the explosion-proof housing. A docking guide sleeve is also fixed to the explosion-proof housing. A variable-diameter through-hole is provided inside the docking guide sleeve, which consists of a spring assembly hole, a central hole, and a limit hole. The guide rod passes through the variable-diameter through-hole. One end of the guide rod is fixed with a connecting sleeve, and the other end of the guide rod is inserted into the explosion-proof housing and connected to the limit sensor female connector. A storage spring and a limit ring are provided on the guide rod. The limit ring is located inside the limit hole, and the storage spring is located inside the spring assembly hole, with one end of the storage spring abutting against the connecting sleeve. An annular locking keyway is formed on the outer wall of the middle part of the guide rod. An installation hole is provided on the guide sleeve, and a locking key is provided in the installation hole. The locking key includes a compression spring and a slotted conical end set screw. The compression spring acts on the slotted conical end set screw, so that the end of the slotted conical end set screw is pressed into contact with the outer wall of the guide rod. The shock wave receiving disk is threaded onto the connecting sleeve; the lithium battery is used to power the electronic trigger; the male and female limit sensor heads are set on the power supply circuit of the electronic trigger; and the electronic trigger is activated when the distance between the male and female limit sensor heads is less than 2mm. The controller is connected to the male limit sensor, the female limit sensor, and the electronic trigger, respectively.

2. The self-contained, long-standby, active, fast, bidirectional electrically controlled explosion-proof device for mining, as described in claim 1, is characterized in that: The explosion-proof fire extinguishing system consists of a gas storage chamber and a dry powder chamber. The gas storage chamber and the dry powder chamber are respectively installed on the top of the protected area via the main mounting frame. One end of the dry powder chamber is connected to one end of the gas storage chamber. A pressure relief port is provided at the connection between the gas storage chamber and the dry powder chamber. An electronic trigger and a pressure diaphragm are installed at the pressure relief port. The other end of the dry powder chamber is connected to a sealing membrane via a clamping flange. The dry powder chamber contains dry powder. A pressure gauge, an inflation valve, and a pressure sensor are installed on the gas storage chamber.

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