Gas concentration-based self-starting rapid sealing explosion suppression isolation device

Abstract

The invention discloses a gas concentration-based self-starting rapid sealing explosion suppression isolation device, which belongs to the technical field of isolation devices, and comprises a sleeve sleeving the tail end of a drill boom, a plurality of sealing shells surrounding the outer part of the sleeve, a pressure tank arranged on the inner wall of the sealing shell, and a rapid response mechanism, the quick response mechanism comprises an accelerator plate arranged on one side of the sleeve, a first spring and a pressure distribution mechanism are arranged on one side of the accelerator plate, the pressure distribution mechanism comprises a pressure dividing seat arranged in the closed shell, a firing pin is arranged in the pressure dividing seat in a penetrating mode, a valve port is formed in the outer wall of the pressure tank, and the closed explosion suppression mechanism comprises a storage box arranged on the inner wall of the closed shell. According to the explosion suppression device, the response speed of the device is increased through the quick response mechanism, the using effect of the device is guaranteed, pressure is quickly distributed through the pressure distribution mechanism, the reliability of the device is improved, sealing is enhanced through the closed explosion suppression mechanism, and the explosion suppression effect is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of isolation device technology, and particularly relates to a self-starting rapid sealing and explosion suppression isolation device based on gas concentration. Background Technology

[0002] A blowout refers to the phenomenon during drilling operations where gas and coal dust are suddenly ejected due to a sudden release of gas pressure in the coal seam. Blowouts commonly occur in outburst-prone coal seams or geologically structural zones. When the coal seam behind the borehole breaks down and forms cavities, a large amount of gas accumulates. When the gas pressure exceeds the resistance of the rock dust within the borehole, a blowout occurs. The high-speed gas flow ejected can destroy roadway facilities and disrupt ventilation systems. Furthermore, the large amount of gas ejected along with flying coal dust can trigger gas and coal dust explosions. Therefore, it is crucial to strengthen gas monitoring at the construction site during coal mining to prevent gas exceeding limits from triggering alarms and causing operational interruptions. The response window for blowout phenomena is short. Existing explosion suppression isolation devices suffer from response delays due to transmission inertia. The time from when the sensor detects that the methane concentration has reached the threshold and triggers the device to when the device completes the explosion suppression action is relatively long, which can easily lead to missing the optimal explosion suppression opportunity and causing operational interruptions. Furthermore, the start-up and pressure distribution processes of existing explosion suppression isolation devices are complex, mainly relying on complex electrical control systems. These systems have low reliability in complex field environments and cannot guarantee the rapid opening of the pressure tank and the timely delivery of the explosion suppressant in the event of a sudden blowout. During the duration of the blowout, high-concentration methane from the outside will continuously seep into the existing explosion suppression isolation devices, causing the explosion suppressant to be diluted by the continuously seeping methane, making it difficult to maintain the explosion suppression effect in the core area and affecting the final explosion suppression effect. Summary of the Invention

[0003] The purpose of this invention is to address the problems of slow mechanical transmission response, complex control systems that cannot quickly distribute pressure and explosion suppressant, and insufficient sealing leading to explosion suppressant dilution in existing explosion suppression isolation devices. Therefore, this invention proposes a self-starting, rapid sealing explosion suppression isolation device based on gas concentration.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a self-starting rapid sealing and explosion suppression isolation device based on gas concentration; This includes the casing fitted onto the end of the drill arm; A closed shell, wherein multiple closed shells are arranged around the outside of the sleeve; A pressure vessel, wherein the pressure vessel is disposed on the inner wall of a closed shell; A rapid response mechanism includes an acceleration plate disposed on one side of the sleeve, and a first spring disposed on one side of the acceleration plate. The acceleration plate accelerates by storing energy in the first spring and releasing it. The accelerated movement of the acceleration plate reduces the time required for the closed shell to flip and improves the response speed of the device. A pressure distribution mechanism includes a pressure distribution seat located inside a closed shell, a striker inserted inside the pressure distribution seat, and a valve port on the outer wall of the pressure tank. The pressure tank is connected to the pressure distribution seat by the striker penetrating the valve port, and the pressure distribution seat distributes the pre-stored compressed air in the pressure tank. A sealed explosion suppression mechanism includes a storage box disposed on the inner wall of a sealed shell. The storage box has a storage compartment. By filling the storage box with compressed gas, the explosion suppressant in the storage compartment is squeezed out to neutralize methane.

[0005] As a further description of the above technical solution: It also includes a mounting plate, which is disposed on one side of the sleeve; A sliding plate is slidably connected to one side of the mounting plate and slidably connected to the acceleration plate. A contact block is provided on one side of the sliding plate, and a limiting rod is inserted through the contact block. One end of the limiting rod is connected to a corresponding position on the outer wall of the sliding plate. A first spring is sleeved on the outside of the limiting rod. The sliding plate can drive the acceleration plate to move synchronously. A contact rod is provided on one side of the acceleration plate, and one end of the contact rod is rotatably connected to a rotating shaft. The rotating shaft is connected to the mounting plate through the plate body. The protrusion of the contact rod can abut against the protrusion of the acceleration plate to restrict the movement of the acceleration plate. The gear is rotatably connected to the side wall of the mounting plate. The side wall of the mounting plate is provided with a rack. The gear meshes with the rack. Multiple support seats are arranged around the outer wall of the sleeve. A motor is installed on the outer wall of the support seats. The output end of the motor is connected to one side of the gear. The motor drives the gear to rotate and thus moves the sliding plate.

[0006] As a further description of the above technical solution: It also includes a fixing plate, which is disposed on the outer wall of the sleeve; A sliding block is slidably connected to the outer wall of the fixed plate, and a stroke groove is provided on both sides of the outer wall of the sliding block. A pushing block is provided on one side of the sliding block, and a column is provided on both sides of the outer wall of the pushing block. When the sliding block is pushed by the acceleration plate, the columns on both sides of the pushing block slide in the stroke groove, so that the pushing block moves away from the fixed plate and extends relative to the sliding block. The first sleeve rod has its two ends rotatably connected to the inner wall of the sliding block and the outer wall of the pushing block respectively through blocks. A second spring is provided on the outside of the first sleeve rod, and the two ends of the second spring are respectively connected to the outer walls of the blocks at both ends of the first sleeve rod. When the sliding block approaches the pushing block, the second spring pushes the pushing block to move along the trajectory of the travel groove through its elastic force.

[0007] As a further description of the above technical solution: It also includes a flip-up seat, which is disposed on the outer wall of the fixed plate; A linkage frame, wherein one end of the frame is rotatably connected to the outer wall of the flipping seat at a corresponding position, and the middle part of the frame is rotatably connected to one end of the push block; The flip plate has an L-shaped cross-section, and the shorter end of the L-shaped flip seat is rotatably connected between two flip seats. The other end of the linkage frame is rotatably connected to the outer wall of the shorter end of the L-shaped flip plate. The push block drives the flip plate to flip around the flip seat as an axis through the linkage frame.

[0008] As a further description of the above technical solution: It also includes a trigger block, which is located inside the enclosed shell; A linkage plate, one end of which is rotatably connected to one end of a trigger block, and a limit block is rotatably connected to one end of the linkage plate. A limit plate is provided on the outer wall of the pressure dividing seat, and the protrusion of the limit plate abuts against the side wall of the limit block to restrict the movement of the pressure dividing seat. The second sleeve rod has its two ends rotatably connected to the inner wall of the closed shell and the outer wall of the trigger block respectively through blocks. A third spring is provided on the outside of the second sleeve rod, and the two ends of the third spring are respectively connected to the outer walls of the blocks at both ends of the second sleeve rod. In the initial state, the third spring keeps one end of the trigger block protruding from the closed shell.

[0009] As a further description of the above technical solution: It also includes a pressure divider tube, which is connected to one side of the pressure divider base; The main pressure relief port is located on the outer wall of one side of the pressure distribution seat. When the pressure tank is connected to the pressure distribution seat, most of the compressed gas is discharged through the main pressure relief port. The secondary pressure relief port is located on the outer wall of one side of the pressure dividing pipe. When the pressure tank is connected to the pressure dividing seat, a small portion of the compressed gas is discharged through the secondary pressure relief port.

[0010] As a further description of the above technical solution: It also includes a positioning seat, which is slidably connected to one end of the pressure divider tube, and one end of the positioning seat is inserted through a column at a corresponding position on the inner wall of the closed shell. The fourth spring has one end connected to the inner wall of the positioning seat and the other end connected to the corresponding position of the outer wall of the firing pin. When the limiting block separates from the limiting plate, the fourth spring pushes the pressure dividing tube to move by its own elastic force.

[0011] As a further description of the above technical solution: It also includes a valve seat, which is embedded inside the pressure tank; A movable plug, the outer wall of which is slidably connected to the valve port, and the outer wall of the movable plug is provided with multiple vent holes around the axis; The fifth spring is connected to one end of the movable plug, and the other end of the fifth spring is connected to the corresponding position of the inner wall of the valve seat. When the tip of the striking pin pierces the valve port, the tip of the striking pin pushes the movable plug to move and open the vent hole.

[0012] As a further description of the above technical solution: It also includes a three-way pipe, one end of which is connected to the main pressure relief port, and the other two ends of which are connected to the main pressure pipe. One end of the main pressure pipe passes through the outer wall of the storage box, and the compressed gas discharged from the main pressure relief port is transported into the storage box through the main pressure pipe. An expansion plate is installed inside the storage box. Multiple conveying pipes are connected to the top and bottom surfaces of the storage chamber. After compressed gas is filled into the storage box, it compresses the volume of the storage chamber by squeezing the expansion plate, squeezing out the explosion suppressant, and then conveying it through the conveying pipes. The distribution seat has its outer wall connected to one end of the delivery pipe. Multiple nozzles are embedded in the outer wall of the distribution seat. After the explosion suppressant is delivered into the distribution seat by the delivery pipe, it is sprayed by the nozzles to neutralize the methane.

[0013] As a further description of the above technical solution: It also includes a connecting plate, which is connected to the side wall of the closed shell, and a sealing strip is provided on one outer wall of the connecting plate. The sealing strip has a hollow structure. The connector has one end connected to the secondary pressure relief port and the other end connected to a secondary pressure pipe. The secondary pressure pipe passes through the outer wall of the sealing strip and fills the sealing strip with the compressed gas discharged from the secondary pressure relief port, making the contact between the two staggered sealing strips tighter.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, by setting a fast response mechanism, the movement of the sliding block is accelerated by storing energy in the first spring and then releasing the energy instantaneously at a specific trigger point. The accelerated sliding block then drives the flipping plate to flip, which greatly reduces the time for the flipping plate to perform the flipping operation, improves the overall response speed of the device, ensures the effectiveness of the device, and improves the operating efficiency of the device.

[0015] 2. In this invention, by setting a pressure distribution mechanism, after the closed shell completes the flip connection, the pressure distribution seat is released by the contact between the trigger block and the outer wall of the drill rod. The spring force pushes the striker to connect the pressure tank and the pressure distribution seat, so that the compressed gas pre-stored inside the pressure tank can automatically and quickly enter the distribution pipeline, thereby quickly starting the sealing and explosion suppression mechanism. This simplifies the operation and control system and improves the ease of use and reliability of the device.

[0016] 3. In this invention, by setting up a closed explosion suppression mechanism, the compressed gas is divided into two paths. The compressed gas in the main path is responsible for pushing the pre-stored explosion suppressant in the storage chamber, so that it is quickly squeezed out and sprayed to neutralize the methane, thereby rapidly reducing the methane concentration in the space and preventing an explosion. The compressed gas in the branch path is filled into the sealing strip, which expands and enhances the sealing performance, preventing external methane from seeping in and ensuring the explosion suppression effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of a self-starting rapid sealing and explosion suppression isolation device based on gas concentration proposed in this invention; Figure 2 This is a schematic diagram of the disassembled structure of a self-starting rapid sealing explosion suppression isolation device based on gas concentration proposed in this invention; Figure 3 This is a schematic diagram of the rapid response mechanism of a gas concentration-based self-starting rapid sealing explosion suppression isolation device proposed in this invention; Figure 4 This is a partial half-section diagram of the rapid response mechanism of a gas concentration-based self-starting rapid sealing explosion suppression isolation device proposed in this invention; Figure 5 This is a schematic diagram of the pressure distribution mechanism and the sealing and explosion suppression mechanism of a gas concentration-based self-starting rapid sealing and explosion suppression isolation device proposed in this invention. Figure 6 This is a partial half-section diagram of the pressure distribution mechanism and the sealing and explosion suppression mechanism of a gas concentration-based self-starting rapid sealing and explosion suppression isolation device proposed in this invention. Figure 7 This is a schematic diagram of the pressure distribution mechanism of a gas concentration-based self-starting rapid sealing explosion suppression isolation device proposed in this invention. Figure 8 This is a partial half-section diagram of the pressure distribution mechanism of a gas concentration-based self-starting rapid sealing explosion suppression isolation device proposed in this invention. Figure 9 This is a partial cross-sectional view of the sealing and explosion suppression mechanism of a self-starting rapid sealing and explosion suppression isolation device based on gas concentration proposed in this invention. Figure 10 This is a partial half-section diagram of another part of the sealing and explosion suppression mechanism of a gas concentration-based self-starting rapid sealing and explosion suppression isolation device proposed in this invention.

[0018] Legend: 1. Sleeve; 2. Support base; 3. Quick response mechanism; 301. Mounting plate; 302. Sliding plate; 303. Contact block; 304. Limiting rod; 305. First spring; 306. Accelerating plate; 307. Rotating shaft; 308. Contact rod; 309. Rack; 310. Gear; 311. Motor; 312. Fixing plate; 313. Sliding block; 314. Stroke groove; 315. Pushing block; 316. First sleeve rod; 317. Second spring; 318. Linkage frame; 319. Tilting base; 320. Tilting plate; 4. Enclosed shell; 5. Pressure tank; 6. Pressure distribution mechanism; 601. Trigger block; 602. Linkage plate; 603. 604. Limiting block; 605. Second sleeve rod; 606. Third spring; 607. Limiting plate; 608. Pressure dividing seat; 609. Pressure dividing pipe; 610. Positioning seat; 611. Fourth spring; 612. Impact pin; 613. Main pressure relief port; 614. Secondary pressure relief port; 615. Valve seat; 616. Moving plug; 617. Fifth spring; 618. Valve port; 701. Sealing and explosion suppression mechanism; 702. T-connector; 703. Main pressure pipe; 704. Storage box; 705. Expansion plate; 706. Storage compartment; 707. Delivery pipe; 708. Distributor seat; 709. Nozzle; 710. Connector; 711. Secondary pressure pipe; 712. Connecting plate; 713. Sealing strip. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-10 , Figures 3-4 The present invention provides a technical solution comprising a sleeve 1 fitted onto the end of the drill arm; Enclosed shell 4, multiple enclosed shells 4 are arranged around the outside of sleeve 1; Pressure tank 5 is located on the inner wall of the enclosed shell 4; The rapid response mechanism 3 includes an acceleration plate 306 located on one side of the sleeve 1. A first spring 305 is provided on one side of the acceleration plate 306. The first spring 305 stores energy and then releases it to accelerate the movement of the acceleration plate 306. The acceleration of the acceleration plate 306 reduces the time required for the closed shell 4 to flip and improves the response speed of the device. The pressure distribution mechanism 6 includes a pressure distribution seat 607 located inside the closed shell 4. A striker 611 is inserted into the pressure distribution seat 607. A valve port 617 is provided on the outer wall of the pressure tank 5. The pressure tank 5 is connected to the pressure distribution seat 607 by the striker 611 inserting into the valve port 617. The pressure distribution seat 607 distributes the pre-stored compressed air in the pressure tank 5. The sealed explosion suppression mechanism 7 includes a storage box 703 disposed on the inner wall of the sealed shell 4. The storage box 703 has a storage compartment 705. The explosion suppressant in the storage compartment 705 is squeezed out by filling the storage box 703 with compressed gas to neutralize methane.

[0021] It also includes a mounting plate 301, which is located on one side of the sleeve 1; A sliding plate 302 is slidably connected to one side of the mounting plate 301, and the sliding plate 302 is slidably connected to the acceleration plate 306. A contact block 303 is provided on one side of the sliding plate 302, and a limiting rod 304 is inserted inside the contact block 303. One end of the limiting rod 304 is connected to a corresponding position on the outer wall of the sliding plate 302. A first spring 305 is sleeved on the outside of the limiting rod 304. The sliding plate 302 can drive the acceleration plate 306 to move synchronously. Contact rod 308 is located on one side of acceleration plate 306, and one end of contact rod 308 is rotatably connected to rotating shaft 307. Rotating shaft 307 is connected to mounting plate 301 through plate body. The protrusion of contact rod 308 can abut against the protrusion of acceleration plate 306 to restrict the movement of acceleration plate 306. Gear 310 is rotatably connected to the side wall of mounting plate 301. The side wall of mounting plate 301 is provided with rack 309. Gear 310 meshes with rack 309. Multiple support seats 2 are arranged around the outer wall of sleeve 1. Motor 311 is installed on the outer wall of support seat 2. The output end of motor 311 is connected to one side of gear 310. Motor 311 drives gear 310 to rotate and drives sliding plate 302 to move.

[0022] It also includes a fixing plate 312, which is disposed on the outer wall of the sleeve 1; The sliding block 313 is slidably connected to the outer wall of the fixed plate 312, and both sides of the outer wall of the sliding block 313 are provided with stroke grooves 314. A pushing block 315 is provided on one side of the sliding block 313. Both sides of the outer wall of the pushing block 315 are provided with columns. When the sliding block 313 is pushed by the acceleration plate 306, the columns on both sides of the pushing block 315 slide in the stroke grooves 314, so that the pushing block 315 moves away from the fixed plate 312 and extends out relative to the sliding block 313. The first sleeve rod 316 has its two ends rotatably connected to the inner wall of the sliding block 313 and the outer wall of the pushing block 315 respectively via blocks. The first sleeve rod 316 is provided with a second spring 317, and the two ends of the second spring 317 are respectively connected to the outer walls of the blocks at both ends of the first sleeve rod 316. When the sliding block 313 approaches the pushing block 315, the second spring 317 pushes the pushing block 315 to move along the trajectory of the travel groove 314 through elastic force.

[0023] It also includes a flip base 319, which is disposed on the outer wall of the fixed plate 312; Linkage frame 318, one end of the frame body of linkage frame 318 is rotatably connected to the corresponding position of the outer wall of the flipping seat 319, and the middle part of the frame body of linkage frame 318 is rotatably connected to one end of the push block 315. The flip plate 320 has an L-shaped cross-section, and the shorter end of the flip seat 319 is rotatably connected between the two flip seats 319. The other end of the linkage frame 318 is rotatably connected to the corresponding position of the outer wall of the shorter end of the flip plate 320. The push block 315 drives the flip plate 320 to flip around the flip seat 319 as the axis through the linkage frame 318.

[0024] Specifically: a methane sensor is installed on the side wall of the working end of the drill arm, and the casing 1 is sleeved on the end of the drill arm. The motor 311 is controlled by the methane sensor. When the methane concentration in the borehole reaches the threshold, the methane sensor triggers an alarm and starts the motor 311. The motor 311 drives the gear 310 to rotate through the output end. The gear 310 drives the rack 309 to move. The rack 309 drives the sliding plate 302 to move. The acceleration plate 306 moves downward synchronously with the sliding plate 302. When the acceleration plate 306 moves to the point where the outer wall protrusion abuts against the protrusion of the contact rod 308, the position of the acceleration plate 306 is relatively fixed. As the sliding plate 302 continues to move downward, the acceleration plate 306 moves upward relative to the sliding plate 302, and the end of the limiting rod 304 that penetrates the contact block 303 extends relative to the contact block 303. The first spring 305 is compressed and begins to store energy. When the sliding plate 302 moves to the point where the inclined surface of the contact block 303 contacts one edge of the contact rod 308, the sliding plate 302 continues to move. The edge of the contact rod 308 slides along the inclined surface of the sliding plate 302 and lifts relative to the mounting plate 301. When the contact rod 308 is lifted, the protrusion of the contact rod 308 separates from the protrusion of the acceleration plate 306, and the first spring 305 is released. The first spring 305 converts the elastic potential energy accumulated during compression into elastic force to push the acceleration plate 306, so that the acceleration plate 306 obtains an acceleration and slides out relative to the sliding plate 302, thereby increasing the movement speed of the acceleration plate 306. The sliding block 313 has a block on its side wall, and the block is slidably connected to the groove of the fixed plate 312. The acceleration plate 306 pushes the sliding block 313 to move. When the sliding block 313 moves down, the column on the side wall of the pushing block 315 slides along the direction of the travel groove 314. When the column slides from one end of the travel groove 314 to the other end, the pushing block 315 is lifted relative to the fixed plate 312 and extended relative to the sliding block 313. Furthermore, during the sliding process of the column on the side wall of the push block 315, the second spring 317 continuously pushes the push block 315 away from the sliding block 313 by the elastic force, thus assisting the movement of the push block 315; The push block 315 drives the linkage frame 318 to rotate clockwise, the linkage frame 318 drives the flip plate 320 to rotate clockwise, and the flip plate 320 drives the closed shell 4 connected to the outer wall to rotate 180 degrees synchronously. Furthermore, the cross-sectional shape of the closed shell 4 is fan-shaped. The four motors 311 start synchronously and drive the four closed shells 4 to rotate synchronously through the rapid response mechanism 3, so that the four closed shells 4 are combined into a cylinder and fitted outside the drill rod. The bottom of the cylinder composed of the four closed shells 4 seals the drill hole to prevent methane from being ejected.

[0025] It should be noted that the methane sensor described above has a built-in laser diode that emits a tunable wavelength laser that matches the absorption spectrum of methane molecules. When the laser passes through a methane-containing gas, the light energy of a specific wavelength is absorbed, resulting in light intensity attenuation. The degree of attenuation is proportional to the methane concentration. The detector receives the attenuated light signal, extracts the second harmonic signal through lock-in amplification technology, and finally converts it into a concentration value. This part is a well-known technology in the field and will not be elaborated here.

[0026] It should be noted that the selection of motor 311 in the above description should be made according to the needs. This part is well-known technology in the field and will not be elaborated here.

[0027] Please see Figures 6-8 It also includes a trigger block 601, which is located inside the closed shell 4; Linkage plate 602, one end of linkage plate 602 is rotatably connected to one end of trigger block 601, and one end of linkage plate 602 is rotatably connected to limit block 603. Limit plate 606 is provided on the outer wall of pressure dividing seat 607, and the protrusion of limit plate 606 abuts against the side wall of limit block 603 to restrict the movement of pressure dividing seat 607. The second sleeve rod 604 has two ends rotatably connected to the inner wall of the closed shell 4 and the outer wall of the trigger block 601 respectively via blocks. A third spring 605 is provided on the outside of the second sleeve rod 604, and the two ends of the third spring 605 are respectively connected to the outer walls of the blocks at both ends of the second sleeve rod 604. In the initial state, the third spring 605 keeps one end of the trigger block 601 protruding from the shell of the closed shell 4.

[0028] It also includes a pressure divider tube 608, which is connected to one side of the pressure divider base 607; The main pressure relief port 612 is located on the outer wall of one side of the pressure distribution seat 607. When the pressure tank 5 is connected to the pressure distribution seat 607, most of the compressed gas is discharged through the main pressure relief port 612. Secondary pressure relief port 613 is opened on the outer wall of the pressure dividing pipe 608. When the pressure tank 5 is connected to the pressure dividing seat 607, a small part of the compressed gas is discharged through the secondary pressure relief port 613.

[0029] It also includes a positioning seat 609, which is slidably connected to one end of the pressure divider tube 608, and one end of the positioning seat 609 is inserted through a column at the corresponding position on the inner wall of the closed shell 4. The fourth spring 610 has one end connected to the inner wall of the positioning seat 609, and the other end connected to the corresponding position of the outer wall of the firing pin 611. When the limiting block 603 separates from the limiting plate 606, the fourth spring 610 pushes the pressure divider tube 608 to move by its own elastic force.

[0030] It also includes a valve seat 614, which is embedded inside the pressure tank 5; The movable plug 615 has its outer wall slidably connected to the valve port 617, and the outer wall of the movable plug 615 has multiple vent holes around the axis. The fifth spring 616 is connected to one end of the movable plug 615, and the other end of the fifth spring 616 is connected to the corresponding position of the inner wall of the valve seat 614. When the tip of the striking pin 611 pierces the valve port 617, the tip of the striking pin 611 pushes the movable plug 615 to move and open the vent.

[0031] Specifically, in the untriggered state, one end of the contact block 303 extends out of the inner wall of the closed shell 4, the side wall of the limiting block 603 abuts against the protrusion of the limiting plate 606, the fourth spring 610 is compressed, and the tip of the firing pin 611 does not enter the range of the valve port 617. When the device triggers the flipping of the closed shell 4, the outer wall of the drill rod presses the part of the contact block 303 protruding from the closed shell 4 inward. The contact block 303 rotates around the side wall column as the axis and pulls the linkage plate 602. The linkage plate 602 pulls the limiting block 603 to rotate around the side wall column as the axis, causing the limiting block 603 to separate from the protruding part of the limiting plate 606. The fourth spring 610 is released, so that the pressure dividing seat 607, the pressure dividing tube 608 and the firing pin 611 are pushed away from the positioning seat 609 by the elastic force of the fourth spring 610 as a whole, so that the firing pin 611 moves closer to the pressure tank 5. The tip of the firing pin 611 is inserted into the valve port 617 and contacts one side of the movable plug 615. Multiple vent holes are opened around the outer wall of the movable plug 615 along the axis. The firing pin 611 pushes the movable plug 615 to move away from the valve port 617, and the fifth spring 616 is compressed. When the movable plug 615 moves to the point where the vent holes are separated from the inner wall of the valve port 617, the valve seat 614 is connected to the valve port 617. Furthermore, when the fifth spring 616 is compressed to its maximum extent, the movable plug 615 cannot move. The movable plug 615 reacts to the striking pin 611, causing the striking pin 611 to retract inward relative to the pressure dividing seat 607, so that the pressure dividing seat 607 is connected to the valve port 617, and the pressure dividing seat 607 is connected to the pressure tank 5. The compressed gas stored in the pressure tank 5 passes through the vent hole via the valve seat 614 and then enters the pressure distribution seat 607 through the valve port 617. The inner diameter of the main pressure relief port 612 on the outer wall of the pressure distribution seat 607 is larger than the inner diameter of the secondary pressure relief port 613 on the outer wall of the pressure distribution pipe 608. Most of the compressed gas is discharged from the main pressure relief port 612 and a small portion is discharged from the secondary pressure relief port 613, thus realizing rapid pressure distribution when the device is triggered.

[0032] Please see Figure 5 , Figures 9-10 It also includes a three-way pipe 701, one end of which is connected to the main pressure relief port 612, and the other two ends of the three-way pipe 701 are connected to the main pressure pipe 702. One end of the main pressure pipe 702 passes through the outer wall of the storage box 703, and the compressed gas discharged from the main pressure relief port 612 is transported into the storage box 703 through the main pressure pipe 702. An expansion plate 704 is located inside a storage box 703. Multiple conveying pipes 706 are connected to the top and bottom surfaces of the storage chamber 705. After compressed gas is filled into the storage box 703, it compresses the volume of the storage chamber 705 by squeezing the expansion plate 704, squeezing out the explosion suppressant, and conveying it through the conveying pipes 706. The distribution seat 707 is connected to one end of the delivery pipe 706 on its outer wall. Multiple nozzles 708 are embedded in the outer wall of the distribution seat 707. After the explosion suppressant is delivered into the distribution seat 707 by the delivery pipe 706, it is sprayed by the nozzles 708 to neutralize the methane.

[0033] It also includes a connecting plate 711, which is connected to the side wall of the closed shell 4. A sealing strip 712 is provided on one outer wall of the connecting plate 711, and the sealing strip 712 has a hollow structure. Connector 709, one end of connector 709 is connected to secondary pressure relief port 613, and the other end of connector 709 is connected to secondary pressure pipe 710. Secondary pressure pipe 710 passes through the outer wall of sealing strip 712 and fills the sealing strip 712 with compressed gas discharged from secondary pressure relief port 613, so that the contact between the two staggered sealing strips 712 is tighter.

[0034] Specifically: the compressed air discharged from the main pressure relief port 612 enters the three-way pipe 701, and enters the main pressure pipes 702 on both sides of the sealed shell 4 through the two symmetrical pipes of the three-way pipe 701. The compressed gas enters the storage box 703 along the main pressure pipe 702. The expansion plate 704 is made of elastic material. The compressed gas squeezes one side of the expansion plate 704, and the space of the storage chamber 705 is compressed, so that the pre-stored explosion suppressant in the storage chamber 705 is squeezed outward. Furthermore, the squeezed-out explosion suppressant enters the distribution seat 707 through the delivery pipe 706, and then the nozzle 708 set on the distribution seat 707 sprays the explosion suppressant into the internal space of the sealed shell 4. The explosion suppressant neutralizes the methane in the internal space of the sealed shell 4, reduces the methane concentration and prevents gas explosion. Furthermore, the sealing strip 712 is made of elastic material and is a thin-walled hollow structure. When the two connected closed shells 4 are joined together, the protrusions of the two adjacent sealing strips 712 are interlaced, reducing the gap between the two adjacent sealing strips 712. The compressed air discharged from the secondary pressure relief port 613 enters the secondary pressure pipe 710 after passing through the connector 709. The end of the secondary pressure pipe 710 has multiple branches, and the ends of the branches penetrate one side of the outer wall of the sealing strip 712 and insert into the cavity of the sealing strip 712. The compressed gas pushes the inner wall of the sealing strip 712 from the inside out through pressure, pressing the contact surface of the two interlaced sealing strips 712 tightly, preventing external methane from seeping into the interior of the sealed shell 4 due to insufficient sealing, thus improving the sealing effect.

[0035] It should be noted that the main component of the anti-knock agent mentioned above is sodium bicarbonate. Sodium bicarbonate and other components decompose and absorb heat at high temperatures, reducing the temperature of the combustion zone, releasing inert gases to dilute the oxygen concentration to below the critical value, capturing active free radicals such as OH· and H·, and terminating the chain reaction. This part is well-known technology in the field and will not be elaborated here.

[0036] Working principle: During use, when the methane concentration at the borehole reaches the threshold, the methane sensor alarm is triggered, and the methane sensor starts the motor 311. The motor 311 drives the gear 310 to rotate, causing the sliding plate 302 to move. The acceleration plate 306 moves synchronously with the sliding plate 302. When the acceleration plate 306 and the sliding plate 302 move synchronously until the protrusion on the outer wall of the acceleration plate 306 abuts against the protrusion on the outer wall of the contact rod 308, the acceleration plate 306 stops moving. As the sliding plate 302 continues to move, the first spring 305 is gradually compressed and accumulates elastic potential energy. When the contact block 303 passes the inclined plane and the contact rod 308... When lifted, the first spring 305 is released, and the elastic potential energy stored in the first spring 305 is converted into elastic force, pushing the acceleration plate 306. The acceleration plate 306 pops out instantly and pushes the sliding block 313. The sliding block 313 drives the flipping plate 320 to flip through the pushing block 315. The flipping plate 320 drives the closed shell 4 to flip. The drill pipe sidewall contacts the trigger block 601 and presses the trigger block 601 inward. The trigger block 601 drives the limiting block 603 to move through the linkage plate 602, releasing the limiting of the pressure dividing seat 607. The fourth spring 610 is released and the pressure dividing seat 607, pressure dividing tube 608 and firing pin 611 are aligned. The body is pushed towards the pressure tank 5, the tip of the striking pin 611 pierces the valve port 617 and pushes the movable plug 615, causing the vent hole on the outer wall of the movable plug 615 to be misaligned with the valve port 617, thus connecting the valve seat 614 with the valve port 617. When the fifth spring 616 is compressed to its maximum state, the movable plug 615 is relatively fixed in position and presses against the striking pin 611, causing the striking pin 611 to contract relative to the pressure dividing seat 607. The pressure tank 5 is connected to the pressure dividing seat 607, and the compressed gas in the pressure tank 5 enters the pressure dividing seat 607 and the pressure dividing pipe 608. The compressed gas is distributed from the main pressure relief port 612 and the secondary pressure relief port 613 to the main pressure pipe 702 and the pressure dividing pipe 608, respectively. In the secondary pressure pipe 710, most of the compressed gas enters the storage box 703 through the main pressure pipe 702 and pushes the expansion plate 704. The expansion plate 704 expands and squeezes out the pre-installed explosion suppressant in the storage chamber 705. The explosion suppressant is transported to the distribution seat 707 along the delivery pipe 706 and sprayed by the nozzle 708 to neutralize the methane, quickly reducing the methane concentration and preventing an explosion. A small portion of the compressed gas enters the hollow sealing strip 712 through the secondary pressure pipe 710 and squeezes the sealing strip 712 outward, making the staggered sealing strip 712 seal more tightly to prevent external methane penetration, thus sealing the borehole and preventing blowouts.

[0037] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-starting rapid sealing and explosion suppression isolation device based on gas concentration, comprising a casing (1) sleeved at the end of the drill arm, characterized in that: A closed shell (4), and a plurality of said closed shells (4) are arranged around the outside of the sleeve (1); Pressure tank (5), wherein the pressure tank (5) is disposed on the inner wall of the closed shell (4); The rapid response mechanism (3) includes an acceleration plate (306) disposed on one side of the sleeve (1). A first spring (305) is provided on one side of the acceleration plate (306). The acceleration plate (306) accelerates by storing energy and releasing it after the first spring (305). The acceleration plate (306) accelerates by accelerating, thereby reducing the time required for the closed shell (4) to flip and improving the response speed of the device. The pressure distribution mechanism (6) includes a pressure distribution seat (607) located inside the closed shell (4), a striker (611) is inserted inside the pressure distribution seat (607), and a valve port (617) is provided on the outer wall of the pressure tank (5). The pressure tank (5) is connected to the pressure distribution seat (607) by the striker (611) piercing the valve port (617), and the pressure tank (5) is distributed by the pressure distribution seat (607). The sealed explosion suppression mechanism (7) includes a storage box (703) disposed on the inner wall of the sealed shell (4). The storage box (703) has a storage compartment (705). The explosion suppressant in the storage compartment (705) is squeezed out by filling the storage box (703) with compressed gas to neutralize methane.

2. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 1, characterized in that, Also includes: Mounting plate (301), the mounting plate (301) is disposed on one side of sleeve (1); A sliding plate (302) is slidably connected to one side of the mounting plate (301), and the sliding plate (302) is slidably connected to the acceleration plate (306). A contact block (303) is provided on one side of the sliding plate (302), and a limiting rod (304) is inserted inside the contact block (303). One end of the limiting rod (304) is connected to the corresponding position on the outer wall of the sliding plate (302). The first spring (305) is sleeved on the outside of the limiting rod (304). The sliding plate (302) can drive the acceleration plate (306) to move synchronously. A contact rod (308) is provided on one side of the acceleration plate (306), and a rotating shaft (307) is rotatably connected to one end of the contact rod (308). The rotating shaft (307) is connected to the mounting plate (301) through the plate body. The protrusion of the contact rod (308) can abut against the protrusion of the acceleration plate (306) to restrict the movement of the acceleration plate (306). Gear (310), the gear (310) is rotatably connected to the side wall of the mounting plate (301), the side wall of the mounting plate (301) is provided with a rack (309), the gear (310) meshes with the rack (309), the outer wall of the sleeve (1) is surrounded by multiple support seats (2), and a motor (311) is installed on the outer wall of the support seat (2), the output end of the motor (311) is connected to one side of the gear (310), and the motor (311) drives the gear (310) to rotate and drive the sliding plate (302) to move.

3. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 1, characterized in that, Also includes: A fixing plate (312) is provided on the outer wall of the sleeve (1); A sliding block (313) is slidably connected to the outer wall of the fixed plate (312), and a stroke groove (314) is provided on both sides of the outer wall of the sliding block (313). A pushing block (315) is provided on one side of the sliding block (313), and a column is provided on both sides of the outer wall of the pushing block (315). When the sliding block (313) is pushed by the acceleration plate (306), the columns on both sides of the pushing block (315) slide in the stroke groove (314), so that the pushing block (315) moves away from the fixed plate (312) and extends relative to the sliding block (313). The first sleeve rod (316) has its two ends rotatably connected to the inner wall of the sliding block (313) and the outer wall of the pushing block (315) respectively through blocks. The first sleeve rod (316) is provided with a second spring (317) on its outside, and the two ends of the second spring (317) are respectively connected to the outer walls of the blocks at both ends of the first sleeve rod (316) at corresponding positions. When the sliding block (313) approaches the pushing block (315), the second spring (317) pushes the pushing block (315) to move along the trajectory of the travel groove (314) through elastic force.

4. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 3, characterized in that, Also includes: A flip base (319) is provided on the outer wall of the fixed plate (312); Linkage frame (318), one end of the frame of the linkage frame (318) is rotatably connected to the outer wall of the flipping seat (319) at the corresponding position, and the middle part of the frame of the linkage frame (318) is rotatably connected to one end of the push block (315); The flip plate (320) has an L-shaped cross-section, and the shorter end of the flip seat (319) is rotatably connected between the two flip seats (319). The other end of the linkage frame (318) is rotatably connected to the corresponding position of the outer wall of the shorter end of the L-shaped flip plate (320). The push block (315) drives the flip plate (320) to flip around the flip seat (319) as the axis through the linkage frame (318).

5. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 4, characterized in that, Also includes: Trigger block (601), wherein the trigger block (601) is disposed inside the closed shell (4); A linkage plate (602) is rotatably connected at one end to a trigger block (601), and a limit block (603) is rotatably connected at one end of the linkage plate (602). A limit plate (606) is provided on the outer wall of the pressure dividing seat (607), and the protrusion of the limit plate (606) abuts against the side wall of the limit block (603) to restrict the movement of the pressure dividing seat (607). The second sleeve rod (604) has two ends connected to the inner wall of the closed shell (4) and the outer wall of the trigger block (601) respectively through blocks. A third spring (605) is provided on the outside of the second sleeve rod (604), and the two ends of the third spring (605) are connected to the outer walls of the blocks at both ends of the second sleeve rod (604) respectively. In the initial state, the third spring (605) keeps one end of the trigger block (601) protruding from the shell of the closed shell (4).

6. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 5, characterized in that, Also includes: Pressure divider tube (608), which is connected to one side of pressure divider base (607); The main pressure relief port (612) is located on the outer wall of one side of the pressure distribution seat (607). When the pressure tank (5) is connected to the pressure distribution seat (607), most of the compressed gas is discharged through the main pressure relief port (612). Secondary pressure relief port (613) is opened on the outer wall of the pressure dividing pipe (608). When the pressure tank (5) is connected to the pressure dividing seat (607), a small part of the compressed gas is discharged from the secondary pressure relief port (613).

7. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 5, characterized in that, Also includes: Positioning seat (609), the positioning seat (609) is slidably connected to one end of the pressure dividing tube (608), and one end of the positioning seat (609) is inserted through the column at the corresponding position on the inner wall of the closed shell (4); The fourth spring (610) is connected at one end to the inner wall of the positioning seat (609) and at the other end to the corresponding position of the outer wall of the firing pin (611). When the limiting block (603) separates from the limiting plate (606), the fourth spring (610) pushes the pressure divider tube (608) to move by its own elastic force.

8. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 6, characterized in that, Also includes: Valve seat (614), which is embedded inside the pressure tank (5); The movable plug (615) has its outer wall slidably connected to the valve port (617), and the outer wall of the movable plug (615) has multiple vent holes around the axis. The fifth spring (616) is connected to one end of the movable plug (615), and the other end of the fifth spring (616) is connected to the corresponding position of the inner wall of the valve seat (614). When the tip of the striking pin (611) pierces the valve port (617), the tip of the striking pin (611) pushes the movable plug (615) to move and open the vent.

9. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 1, characterized in that, Also includes: A three-way pipe (701) is connected at one end to the main pressure relief port (612), and the other two ends of the three-way pipe (701) are connected to a main pressure pipe (702). One end of the main pressure pipe (702) passes through the outer wall of the storage box (703), and the compressed gas discharged from the main pressure relief port (612) is transported into the storage box (703) through the main pressure pipe (702). An expansion plate (704) is provided inside the storage box (703). The top and bottom surfaces of the storage chamber (705) are connected to multiple conveying pipes (706). After compressed gas is filled into the storage box (703), it compresses the volume of the storage chamber (705) by squeezing the expansion plate (704), squeezing out the explosion suppressant, and conveying it through the conveying pipes (706). The distribution seat (707) is connected to one end of the delivery pipe (706) on its outer wall. Multiple nozzles (708) are embedded in the outer wall of the distribution seat (707). After the explosion suppressant is delivered into the distribution seat (707) by the delivery pipe (706), it is sprayed by the nozzles (708) to neutralize the methane.

10. The self-starting rapid sealing and explosion suppression isolation device based on gas concentration according to claim 1, characterized in that, Also includes: A connecting plate (711) is connected to the side wall of the closed shell (4). A sealing strip (712) is provided on one outer wall of the connecting plate (711). The sealing strip (712) is a hollow structure. Connector (709), one end of which is connected to secondary pressure relief port (613), and the other end of which is connected to secondary pressure pipe (710). The secondary pressure pipe (710) passes through the outer wall of sealing strip (712) to fill the sealing strip (712) with compressed gas discharged from the secondary pressure relief port (613) so that the contact between the two staggered sealing strips (712) is tighter.

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