A gas drainage device for gas control

Abstract

A gas drainage device for gas management belongs to the technical field of gas management. In order to solve the problem that the leakage reason cannot be distinguished in real time, maintenance is needed, and therefore the drainage operation is interrupted, the application comprises a pump body and a connecting pipe fixedly installed on one side of the pump body, one end of the connecting pipe is provided with a suction pipe, flanges are installed on one end of the connecting pipe and the suction pipe, a plurality of screw rods are connected through one side of the two flanges, nuts are screw-connected on the surface of the screw rods and are in contact with the flanges, an annular frame is fixedly installed on the surface of the connecting pipe, a driving piece is installed on one side of the annular frame, a rotating seat is rotatably connected in the annular frame, different leakage reasons are targeted, corresponding disposal plans are started, the nuts are loosened, automatic tightening is realized through the pushing piece and the tightening frame, the efficiency is far higher than that of manual operation, when the gasket is damaged, fast emergency ring-encircling sealing is realized through the driving piece and the arc-shaped sealing seat, and a large amount of gas leakage can be blocked in a short time.

Description

Technical Field

[0001] This invention relates to the field of gas control technology, specifically to a gas extraction device for gas control. Background Technology

[0002] In the field of coal mine gas control, gas drainage devices are core equipment that actively extract high-concentration gas from coal seams, goafs, and other areas to reduce underground gas concentration and prevent gas explosions and asphyxiation accidents. As a critical channel for gas transportation, the reliability of the gas drainage pipeline directly determines the operational efficiency and safety of the drainage system. Currently, gas drainage pipelines generally adopt a rigid connection structure of flanges and bolts, with sealing achieved through gaskets between the flanges to adapt to the negative pressure conditions and media characteristics during gas drainage.

[0003] For example, a gas extraction device for coal mine gas control, application number CN202122550654.X, includes a base plate. An air intake pump is installed on the top of the base plate near the front end. A housing is installed at the top center of the top of the base plate. An exhaust pump is installed on the other side of the top of the base plate near the front end. A gas tank is installed at the top of the base plate and behind the housing. A nitrogen tank is installed at the top of the base plate and behind the exhaust pump. Pressure gauges are installed on one side of the tops of both the gas tank and the nitrogen tank. A gas pipe is installed between the rear end of the air intake pump and the bottom side of the gas tank. A water pipe is installed at the top side of the gas tank. A booster pipe is installed between the top of the housing and the top of the gas tank. This gas extraction device for coal mine gas control stores the extracted gas in clean water, simultaneously diluting the concentration of gas emitted during subsequent drilling and isolating it from oxygen, thus reducing safety hazards during the control and construction process.

[0004] During long-term operation, the gas drainage device of the aforementioned gas control system is prone to gas leakage at the flange connection due to the complex operating conditions of the gas drainage system. It requires regular manual inspection, which is not only inefficient and has a high rate of missed detection, but also cannot identify the cause of leakage in real time. It requires shutdown for maintenance, which interrupts the drainage operation, leading to an increase in underground gas concentration, seriously affecting the continuity and safety of gas control, and reducing the ventilation effect in the coal mine.

[0005] To address the above problems, a gas extraction device for gas control is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a gas extraction device for gas control. By using this device, the problem in the background mentioned above, where the cause of leakage cannot be identified in real time, requiring shutdown for maintenance and thus interrupting the extraction operation, is solved.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A gas extraction device for gas control includes a pump body and a connecting pipe fixedly installed on one side of the pump body. A extraction pipe is provided at one end of the connecting pipe. Both the connecting pipe and the extraction pipe have flanges installed at one end. Several screws are threaded through one side of each flange, and nuts are threaded onto the screws, contacting the flanges. An annular frame is fixedly installed on the surface of the connecting pipe. A driving component is installed on one side of the annular frame. A rotating seat is rotatably connected inside the annular frame. A connecting seat is slidably connected inside the annular frame and connected to the output end of the driving component. Several detection plates for detecting potential leaks around the flange are rotatably connected to the surface of the connecting seat. Several arc-shaped sealing seats are installed inside the annular frame, and each arc-shaped sealing seat is connected to the rotating seat. Detection pieces are fixedly installed on one side of each arc-shaped sealing seat. A concave frame is fixedly installed on one side of the annular frame. A pushing component is installed inside the concave frame. Tightening frames are inclinedly arranged on both sides inside the concave frame, and the tightening frames contact the nuts.

[0008] Furthermore, the ring frame includes a first ring plate and several first support rods inclinedly installed on the surface of the first ring plate. A second ring plate is fixedly installed at one end of the first support rod. An annular groove is opened inside the second ring plate. A limit rod is fixedly installed on one side of the first ring plate.

[0009] Furthermore, the driving component includes a bracket and a motor fixed inside the bracket. The bracket is fixedly connected to the first annular plate. A threaded rod is fixedly installed at the output end of the motor and is rotatably connected to the first annular plate. A gear is fixedly installed on the surface of the threaded rod.

[0010] Furthermore, the rotating seat includes a third annular plate and several second support rods inclinedly mounted on the surface of the third annular plate. The third annular plate is rotatably connected to the first annular plate. A disc is fixedly mounted on one end of the second support rod. The disc is rotatably connected to the annular groove. Several first arc-shaped grooves are opened through the surface of the disc. An annular toothed plate is fixedly mounted inside the third annular plate, and the gear meshes with the annular toothed plate.

[0011] Furthermore, the connecting seat includes a fourth annular plate and a first fixing block fixedly installed inside the fourth annular plate. A threaded cylinder is fixedly installed at one end of the first fixing block, and the threaded cylinder is threadedly connected to the threaded rod. A second fixing block is also fixedly installed inside the fourth annular plate. A limit cylinder is fixedly installed at one end of the second fixing block, and the limit cylinder is slidably connected to the limit rod.

[0012] Furthermore, a rubber block is fixedly installed on the surface of the detection piece, a rotating plate is fixedly installed on one end of the detection piece, the rotating plate is in contact with the fourth annular plate, rotating rods are fixedly installed on both sides of the rotating plate, the rotating rods are rotatably connected to the fourth annular plate, a torsion spring is fixedly installed on the surface of the rotating rod, and one end of the torsion spring is fixedly connected to the fourth annular plate.

[0013] Furthermore, the arc-shaped sealing seat includes a frame plate and a vertical rod slidably connected inside the frame plate. The frame plate is fixedly connected to the first annular plate. A connecting rod is fixedly installed on one side of the vertical rod. The connecting rod is slidably connected to the frame plate and slidably connected to the first arc-shaped groove. An arc-shaped plate is fixedly installed at one end of the vertical rod, and a sealing gasket is installed on one side of the arc-shaped plate.

[0014] Furthermore, the detection component includes a fifth annular plate and several fixing plates fixedly installed on the surface of the fifth annular plate. The fixing plates are fixedly connected to the frame plate, and an annular contact sensor is fixedly installed inside the fifth annular plate.

[0015] Furthermore, two second arc-shaped grooves are correspondingly formed inside the concave frame; The pushing component includes a hydraulic cylinder and a concave rod fixed to the output end of the hydraulic cylinder, and the concave rod is slidably connected to the concave frame; The tightening frame is fixedly installed with sliding rods on both sides, and the sliding rods are slidably connected to the second arc-shaped groove.

[0016] Furthermore, a storage tank is connected to one end of the pump body; A plug rod is fixedly installed at one end of the screw, and the plug rod is slidably connected to the flange.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By using the detection pad and the detection component together, intermittent contact signals are identified as loose nuts, and continuous contact signals are identified as damaged gaskets. This enables accurate differentiation between two fundamentally different causes of leakage, fundamentally solving the problems of traditional manual inspections that rely on experience and are prone to missed detections and misjudgments.

[0018] 2. For different causes of leakage, the corresponding emergency response plan is activated. When the nut is loose, it is automatically tightened by the pusher and the tightening frame, which is far more efficient than manual tightening. When the gasket is damaged, it is quickly sealed by the drive and the arc-shaped sealing seat, which can stop a large amount of gas leakage in a short time.

[0019] 3. Whether it is automatic tightening of nuts or emergency sealing, the entire treatment process does not require shutdown. The pump can run continuously, maintaining the continuous and efficient operation of the extraction system. This avoids the situation where the underground gas concentration increases due to extraction interruption, thereby increasing the burden on the ventilation system and significantly ensuring the ventilation effect.

[0020] 4. From detection to disposal, no personnel need to enter high-risk areas to operate, avoiding the need for inspection personnel to work in environments where gas concentrations may exceed standards, as well as to perform high-intensity physical labor in confined spaces, thus improving safety. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the pump body structure of the present invention; Figure 4 This is a schematic diagram of the screw structure of the present invention; Figure 5 This is a schematic diagram of the ring frame structure of the present invention; Figure 6 This is a schematic diagram of the rotating seat structure of the present invention; Figure 7 This is a schematic diagram of the connector structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B; Figure 9 This is a schematic diagram of the arc-shaped sealing seat structure of the present invention; Figure 10 This is a schematic diagram of the pushing component structure of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point C.

[0022] In the diagram: 1. Pump body; 11. Storage tank; 2. Connecting pipe; 3. Pulling pipe; 4. Flange; 5. Screw; 51. Insert rod; 6. Nut; 7. Annular frame; 71. First annular plate; 72. First support rod; 73. Second annular plate; 74. Annular groove; 75. Limiting rod; 8. Driving component; 81. Bracket; 82. Motor; 83. Threaded rod; 84. Gear; 9. Rotating seat; 91. Third annular plate; 92. Second support rod; 93. Disc; 94. First arc groove; 95. Annular toothed plate; 10. Connecting seat; 101. Fourth annular plate; 102. First fixing block; 10 3. Threaded cylinder; 104. Second fixing block; 105. Limiting cylinder; 20. Detection piece; 201. Rubber block; 202. Rotating plate; 203. Rotating rod; 204. Torsion spring; 30. Arc-shaped sealing seat; 301. Frame plate; 302. Vertical rod; 303. Connecting rod; 304. Arc-shaped plate; 305. Sealing gasket; 40. Detection piece; 401. Fifth annular plate; 402. Fixing plate; 403. Annular contact sensor; 50. Concave frame; 501. Second arc-shaped groove; 60. Pushing piece; 601. Hydraulic cylinder; 602. Concave rod; 70. Tightening frame; 701. Slide rod. Detailed Implementation

[0023] 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.

[0024] To address the technical problem of being unable to distinguish the cause of a leak in real time, such as Figures 1-11 As shown, the following preferred technical solutions are provided: like Figures 1-2 As shown, a gas drainage device for gas control includes a pump body 1 and a connecting pipe 2 fixedly installed on one side of the pump body 1. A drainage pipe 3 is provided at one end of the connecting pipe 2. Both the connecting pipe 2 and the drainage pipe 3 are equipped with flanges 4 at one end. Several screws 5 are connected through one side of the two flanges 4. Nuts 6 are threaded onto the surface of the screws 5 and are in contact with the flanges 4. The pump body 1 provides negative pressure. The connecting pipe 2 and the drainage pipe 3 form a closed transport channel from the borehole to the surface, ensuring that the gas can flow in a fixed direction along a fixed path and preventing the gas from spreading randomly underground. The drainage pipe 3 can be directly inserted into the borehole, reducing leakage losses during the gas collection process and improving drainage efficiency. The rigid connection of the flanges 4 with the screws 5 and nuts 6 can withstand the negative pressure during gas drainage, preventing the pipeline from deforming due to negative pressure and causing connection failure. At the same time, the detachable connection of the screws 5 and nuts 6 facilitates the later maintenance or replacement of the pipeline and reduces the difficulty of equipment maintenance.

[0025] A ring frame 7 is fixedly installed on the surface of the connecting pipe 2. A driving component 8 is installed on one side of the ring frame 7. A rotating seat 9 is rotatably connected inside the ring frame 7. A connecting seat 10 is slidably connected inside the ring frame 7 and is connected to the output end of the driving component 8. Several detection plates 20 are rotatably connected to the surface of the connecting seat 10, and all detection plates 20 are in contact with the outer side of the two flanges 4. The detection plates 20 are distributed around the two flanges 4, which can cover all potential leakage points on the outer periphery of the flanges 4. Even if there is a local leakage in the flanges 4, a signal can be triggered by the detection plate 20 at the corresponding position, avoiding missed detection due to blind spots and improving the comprehensiveness of leakage identification. Several arc-shaped sealing seats 30 are installed inside the ring frame 7. In practical applications, four can be set. The arc-shaped sealing seats 30 are distributed along the outer periphery of the two flanges 4. When closed, they can form a complete annular sealing band, covering the entire sealing surface of the connection between the two flanges 4. No matter where the gasket is damaged, the leakage can be blocked by the fit of the sealing seat. All the arc-shaped sealing seats 30 are connected to the rotating seat 9.

[0026] The driving component 8 connects the connecting seat 10 and the rotating seat 9 simultaneously, enabling the detection piece 20 to avoid contact with and close the four arc-shaped sealing seats 30. When the gasket is damaged and needs sealing, the driving component 8 moves the connecting seat 10 to move the detection piece 20 away from the flange 4. At the same time, the rotating seat 9 links the four arc-shaped sealing seats 30 to fit together and seal, avoiding component movement conflicts and improving the smoothness of emergency response. The rotational connection of the rotating seat 9 and the sliding connection of the connecting seat 10 ensure smooth operation, adapt to pipeline vibration conditions, and reduce the risk of mechanical jamming. The detection piece 40 is fixedly installed on one side of the arc-shaped sealing seat 30. The detection piece 20 directly contacts the outside of the flange 4. The gas leakage airflow pushes it to rotate, and then forms an intermittent or continuous contact signal with the detection piece 40. It does not rely on complex gas concentration sensors and avoids interference from coal dust and corrosive gases in coal mines on the sensor, resulting in higher identification stability. At the same time, the mechanical movement of the detection piece 20 directly reflects the characteristics of the leaking airflow, which perfectly matches the leakage patterns of intermittent spray caused by loose nut 6 and continuous spray caused by gasket damage, resulting in an extremely low false judgment rate.

[0027] A concave frame 50 is fixedly installed on one side of the ring frame 7. A pusher 60 is installed inside the concave frame 50. The detection component 40, the drive component 8, and the pusher 60 are all electrically connected through the controller. Tightening frames 70 are inclinedly arranged on both sides inside the concave frame 50, and the tightening frames 70 are in contact with the nut 6. When the nut 6 is loose, it drives the tightening frame 70 to bulge out. The pusher 60 tightens the nut 6 by pushing the tightening frame 70 to rotate in the opposite direction. There is no need for the staff to carry a torque wrench to the site for manual operation. It is especially suitable for the maintenance of flange 4 in narrow and high-risk areas downhole, reducing the intensity of manual labor and safety risks.

[0028] In the initial state, the extraction pipe 3 is first inserted into the extraction borehole of the coal seam or goaf to ensure that the gas collection channel is unobstructed. Then, the pump body 1 is started. The pump body 1 forms a negative pressure passage with the extraction pipe 3 through the connecting pipe 2, and the high-concentration gas underground is transported to the surface treatment system along the path of the extraction pipe 3 and the connecting pipe 2 to complete the basic extraction operation. At this time, the two flanges 4 are fitted together by the fastening action of the screw 5 and the nut 6. The sealing gasket between the flanges 4 achieves a seal to ensure that the gas is transported without leakage. After the device has been running for a long time, affected by the working vibration of the pump body 1 and the turbulent vibration of the gas transported by the connecting pipe 2 and the extraction pipe 3, the nut 6 is prone to slight loosening, resulting in the gap between the two flanges 4 and intermittent leakage. After the nut 6 loosens, the pre-tightening force between the flanges 4 decreases, and a small gap appears on the originally fitted sealing surface. At the same time, the continuous vibration of the pump body 1, the connecting pipe 2 and the extraction pipe 3 will cause the gap to open and close repeatedly. At the peak of the vibration, the gap expands, and the gas forms an intermittent pulse jet under the drive of negative pressure. When the gap closes, the leakage is temporarily reduced.

[0029] Initially, several detection plates 20 are in contact with the outer sides of the two flanges 4. The intermittent pulsed gas injection pushes the detection plates 20 inside the annular frame 7, causing the detection plates 20 to rotate back and forth around the connecting seat 10. When the gas flow is injected, the detection plates 20 rotate and touch the detection element 40. When the gas flow is interrupted, the detection element 40 resets, forming an intermittent contact impact. This is determined to be a leak caused by a loose nut 6. The detection element 40 transmits the intermittent contact signal to the controller (the controller is prior art and is not shown in the figure). The controller activates the pusher 60 inside the concave frame 50. The pusher 60 moves along the concave frame... As the frame 50 moves inside, the loosening of the nut 6 causes the tightening frame 70 to rotate. Initially, one end of the tightening frame 70 is flush with the inside of the concave frame 50. After loosening, the tightening frame 70 protrudes slightly inside the concave frame 50. The pushing component 60 moves along the inside of the concave frame 50, applying a pushing force to the protruding end of the tightening frame 70, forcing the tightening frame 70 to rotate in the opposite direction and return to its initial position. During the rotation of the tightening frame 70, the nut 6 is tightened synchronously, restoring the preload of the flange 4, eliminating gaps, blocking intermittent leakage, and ensuring stable negative pressure in gas extraction.

[0030] When the gasket between flanges 4 is damaged, a fixed leakage channel is formed, causing continuous leakage. The continuously injected gas will push the detection disc 20 to rotate continuously. The detection disc 20 always maintains contact with the detection element 40, forming a continuous contact signal. The detection element 40 transmits this signal to the controller. The controller determines that the gasket is damaged, causing leakage. The controller activates the drive component 8 on the ring frame 7. The drive component 8 drives the connecting seat 10 and the detection disc 20 to move synchronously, moving the detection disc 20 away from the flange 4 connection to avoid obstructing subsequent sealing actions. At the same time, the drive component 8 drives the rotating seat 9 to rotate, and the rotating seat 9 is linked to the ring frame 7. The four arc-shaped sealing seats 30 inside move synchronously towards the center along the outer periphery of the flange 4, and finally fit against the connection part of the flange 4 to form an annular seal, covering the damaged area of ​​the gasket and blocking continuous leakage. After subsequent shutdown for maintenance and replacement of the gasket, the controller restarts the drive component 8, which drives the arc-shaped sealing seats 30 back to their initial positions. At the same time, the connecting seat 10 and the detection plate 20 are reset, restoring the monitoring function of the flange 4. The device distinguishes the cause of leakage: a loose nut 6 corresponds to intermittent contact and a protruding tightening bracket 70, while a damaged gasket corresponds to continuous contact, avoiding the problems of missed detection and misjudgment in traditional manual inspection.

[0031] The system provides graded automatic handling for two types of leaks. When nut 6 becomes loose, it is quickly and automatically tightened by pusher 60 and tightening frame 70 without the need for manual intervention with tools. When gasket is damaged, it provides emergency sealing by drive 8 and arc-shaped sealing seat 30. Neither method requires interruption of gas extraction operations. Compared with traditional manual handling, the leakage duration is shortened, effectively reducing the safety risks caused by gas escape, ensuring stable negative pressure in the extraction system, preventing underground gas concentration from increasing due to decreased extraction efficiency, ensuring coal mine ventilation and operational safety, and significantly improving the ventilation effect of coal mine gas control.

[0032] like Figures 7-8 As shown, the connecting seat 10 includes a fourth annular plate 101 and a first fixing block 102 fixedly installed inside the fourth annular plate 101. A threaded cylinder 103 is fixedly installed at one end of each of the first fixing blocks 102, and the threaded cylinder 103 is threadedly connected to the threaded rod 83. A second fixing block 104 is also fixedly installed inside the fourth annular plate 101. A limit cylinder 105 is fixedly installed at one end of the second fixing block 104, and the limit cylinder 105 is slidably connected to the limit rod 75. When the detection piece 40 determines that the gasket is damaged and the detection piece 20 needs to be activated to avoid it, the motor 82 starts and drives the threaded rod 83 to rotate. Because the threaded cylinder 103 is fixed at one end of the first fixing block 102, and the threaded cylinder 103 and the threaded rod 83 are precisely engaged by the threads... When the threaded rod 83 rotates, the rotational motion is converted into the linear motion of the threaded cylinder 103 through the threaded transmission. The threaded cylinder 103 moves away from the flange 4 along the axis of the threaded rod 83, thereby driving the first fixed block 102 and the fourth annular plate 101 fixed thereto to move synchronously, providing a clearance force for the detection piece 20. When the motor 82 reverses, the threaded cylinder 103 moves in the opposite direction along the threaded rod 83, driving the detection piece 20 back to its initial position. The limiting cylinder 105 resets synchronously along the limiting rod 75. The limiting cylinder 105 and the limiting rod 75 on the annular frame 7 maintain a sliding fit. The limiting rod 75 is a rigid fixed structure, which can restrict the limiting cylinder 105 to slide linearly along the axis of the limiting rod 75, and prevents radial offset or rotation.

[0033] A rubber block 201 is fixedly installed on the surface of the detection plate 20. A rotating plate 202 is fixedly installed at one end of the detection plate 20, and the rotating plate 202 is in contact with the fourth annular plate 101. Rotating rods 203 are fixedly installed on both sides of the rotating plate 202, and the rotating rods 203 are rotatably connected to the fourth annular plate 101. A torsion spring 204 is fixedly installed on the surface of the rotating rod 203. The initial elastic force of the torsion spring 204 must be much smaller than the minimum impact force of the leaking airflow. The airflow leaking from the gas extraction flange 4 is essentially a flow driven by the negative pressure difference in the pipeline. Even a slight loosening of the nut 6 will create sufficient airflow velocity due to the negative pressure in the pipeline, and its impact... The force is sufficient to easily overcome the initial elastic force of the torsion spring 204. The impact force can not only overcome the initial elastic force of the torsion spring 204, but also maintain the detection plate 20 at the maximum rotation angle. At this time, the continuous airflow force is greater than the maximum reset force of the torsion spring 204, and the detection plate 20 cannot reset and remains in a continuously flipping state. Moreover, one end of the torsion spring 204 is fixedly connected to the fourth annular plate 101. Through the cooperation with the torsion spring 204, the intermittent airflow is cleverly converted into an intermittent contact signal, and the continuous airflow is converted into a continuous contact signal. This achieves accurate and reliable differentiation between two fundamentally different leakage causes, providing a decisive basis for subsequent graded treatment.

[0034] To address the technical problem of the difficulty in quickly handling gas leaks, such as Figures 1-6 and Figures 9-11 As shown, the following preferred technical solutions are provided: like Figures 3-4 As shown, a storage tank 11 is connected to one end of the pump body 1. During the underground gas extraction process in coal mines, the amount of gas emitted from the coal seam is easily affected by geological conditions and drilling status, resulting in pulse-like fluctuations. The storage tank 11 can serve as a pressure buffer container. When the gas emission increases sharply, the excess gas is temporarily stored in the storage tank 11, preventing the pump body 1 from overloading due to excessive instantaneous air intake, thereby extending the service life of the pump body 1, ensuring the continuous and stable operation of the extraction system, and indirectly improving the ventilation effect. Furthermore, the storage tank 11 can be reused later, reducing resource waste. A plug rod 51 is fixedly installed at one end of the screw 5, and the plug rod 51 is slidably connected to the flange 4. The plug rod 51 restricts the radial displacement of the screw 5, ensuring that the screw 5 is always perpendicular to the flange 4 when the nut 6 is tightened, preventing the screw 5 from rotating when the nut 6 is tightened, and improving the sealing reliability of the flange 4.

[0035] like Figure 5 and Figure 10As shown, the annular frame 7 includes a first annular plate 71 and several first support rods 72 inclinedly installed on the surface of the first annular plate 71. In practical applications, four rods can be used. A second annular plate 73 is fixedly installed at one end of the first support rod 72. An annular groove 74 is opened inside the second annular plate 73. A limit rod 75 is fixedly installed on one side of the first annular plate 71. The first annular plate 71 is made of metal and has high structural strength. After being fixed to the surface of the connecting pipe 2, it can resist the radial and axial forces generated by the vibration of the pump body 1 and the pipeline, and avoid the overall displacement or deformation due to vibration. Compared with the traditional single-rod support structure, the annular force of the first annular plate 71 is more uniform, which can disperse the vibration impact force to the surface of the connecting pipe 2, reduce the connection loosening caused by local stress concentration, and ensure the installation accuracy of subsequent components such as the detection plate 20 and the arc-shaped sealing seat 30. The inclined design of the first support rod 72 forms a conical clearance space between the first annular plate 71 and the second annular plate 73, which does not affect the normal connection of the flange 4, and provides sufficient space for the maintenance of the nut 6 and the rotation of the detection plate 20, avoiding interference between the components.

[0036] The driving component 8 includes a bracket 81 and a motor 82 fixed inside the bracket 81. The motor 82 is a special explosion-proof motor for coal mines. Its winding insulation layer is resistant to coal dust and moisture, and can operate for a long time in the underground environment. This avoids overheating of the motor 82 due to coal dust accumulation or short circuit caused by a humid environment, ensuring the continuity of power output. The bracket 81 is fixedly connected to the first annular plate 71. A threaded rod 83 is fixedly installed at the output end of the motor 82, and the threaded rod 83 is rotatably connected to the first annular plate 71. A gear 84 is fixedly installed on the surface of the threaded rod 83. The motor 82 can drive the threaded rod 83 to rotate, and the rotation of the threaded rod 83 can drive the gear 84 to rotate. Therefore, the movement of the connecting seat 10 and the rotation of the rotating seat 9 can be synchronized.

[0037] like Figure 6As shown, the rotating seat 9 includes a third annular plate 91 and several second support rods 92 inclinedly mounted on the surface of the third annular plate 91. In practical applications, four rods can be set. The third annular plate 91 is rotatably connected to the first annular plate 71, achieving a coaxial rotation reference around the center of the flange 4. This ensures that the third annular plate 91 rotates without eccentricity, and the four arc-shaped sealing seats 30 can close synchronously towards the center, avoiding sealing gaps caused by eccentricity. One end of each of the four second support rods 92 is fixedly mounted with a disc 93, which is rotatably connected to an annular groove 74. Several first arc-shaped grooves 94 are opened through the surface of the disc 93. An annular toothed plate 95 is fixedly installed inside the third annular plate 91, and a gear 84 meshes with the annular toothed plate 95. The rotating gear 84 meshes with the annular toothed plate 95 on the rotating seat 9. Since the annular toothed plate 95 is fixed inside the third annular plate 91, the rotational force of the gear 84 drives the entire third annular plate 91 to start rotating. The third annular plate 91 is rotatably connected to the first annular plate 71, ensuring that it can rotate stably around the central axis of the flange 4. As the third annular plate 91 rotates, the four second support rods 92 fixedly connected to it also rotate synchronously, thereby driving the disc 93 located at the other end to rotate smoothly in the annular groove 74 of the second annular plate 73. After the motor 82 stops driving, a self-locking characteristic is formed, and the third annular plate 91 will be stably maintained in the current position. The arc-shaped sealing seat 30 will not loosen due to pipeline vibration or gas pressure, ensuring the long-term reliability of the sealing state.

[0038] like Figure 9As shown, the arc-shaped sealing seat 30 includes a frame plate 301 and a vertical rod 302 slidably connected inside the frame plate 301. The frame plate 301 is fixedly connected to the first annular plate 71. A connecting rod 303 is fixedly installed on one side of the vertical rod 302. The connecting rod 303 is slidably connected to the frame plate 301 and slidably connected to the first arc-shaped groove 94. The number of connecting rods 303 and the number of first arc-shaped grooves 94 are the same and correspond one-to-one. While the connecting rods 303 are slidably connected to the frame plate 301, the vertical rod 302 also slides inside the frame plate 301. This double sliding cooperation converts the slightly curved driving force obtained by the connecting rod 303 from the first arc-shaped groove 94 into a pure radial linear motion of the vertical rod 302 guided by the frame plate 301. The sealing seat 30 is constrained within a specific track of the ring frame 7, ensuring that the entire arc-shaped sealing seat 30 can only move smoothly in the direction pointing towards the center of the flange 4. An arc-shaped plate 304 is fixedly installed at one end of the vertical rod 302, and a sealing gasket 305 is installed on one side of the arc-shaped plate 304. With the cooperation of the first arc-shaped groove 94 and the connecting rod 303, the four arc-shaped plates 304 move towards the center from four directions simultaneously. Finally, the sealing gaskets 305 on the four arc-shaped plates 304 together form a complete and continuous annular sealing band on the outer periphery of the connection between the two flanges 4. The sealing gasket 305 is tightly attached to the surface of the flange 4 due to uniform compression force, filling the gap of the flange 4 and the gaps caused by the damage of the gasket, thereby achieving effective sealing of continuous gas leakage.

[0039] The detection component 40 includes a fifth annular plate 401 and several fixed plates 402 fixedly installed on the surface of the fifth annular plate 401. The fixed plates 402 are fixedly connected to the frame plate 301. An annular contact sensor 403 is fixedly installed inside the fifth annular plate 401. No matter where the flange 4 leaks, as long as any detection piece 20 is pushed, its corresponding rotating plate 202 will contact the annular contact sensor 403. This achieves all-round, blind-spot-free monitoring of the flange 4 joint and eliminates the risk of missed detection due to the special location of the leak point.

[0040] like Figures 10-11 As shown, two second arc-shaped grooves 501 are correspondingly opened inside the concave frame 50. The pusher 60 includes a hydraulic cylinder 601 and a concave rod 602 fixed to the output end of the hydraulic cylinder 601. The concave rod 602 is slidably connected to the concave frame 50. When the hydraulic cylinder 601 pushes the concave rod 602 to move, it can simultaneously apply a uniform thrust to the tightening frame 70, avoiding the force deviation of the tightening frame 70 caused by single-end pushing. It can push the tightening frame 70 with one protruding end to the initial position and tighten the nut 6.

[0041] Slide rods 701 are fixedly installed on both sides of the tightening frame 70, and the slide rods 701 are slidably connected to the second arc-shaped groove 501. The arc-shaped trajectory of the second arc-shaped groove 501 is completely matched with the rotation path of the tightening frame 70. When the slide rods 701 on both sides of the tightening frame 70 slide into the second arc-shaped groove 501, the second arc-shaped groove 501 can force the tightening frame 70 to rotate along the preset trajectory. The depth of the second arc-shaped groove 501 allows the tightening frame 70 to move slightly when the nut 6 is loosened, ensuring the accuracy of the tightening action.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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.

[0043] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas drainage device for gas control, comprising a pump body (1) and a connecting pipe (2) fixedly installed on one side of the pump body (1), the connecting pipe (2) is provided with a suction pipe (3) at one end, the connecting pipe (2) and the suction pipe (3) are both provided with flanges (4) at one end, a plurality of threaded rods (5) are connected through one side of the two flanges (4), the threaded rods (5) are provided with nuts (6) in threaded connection on the surface, and the nuts (6) are in contact with the flanges (4), characterized in that: A ring frame (7) is fixedly installed on the surface of the connecting pipe (2). A driving component (8) is installed on one side of the ring frame (7). A rotating seat (9) is rotatably connected inside the ring frame (7). A connecting seat (10) is slidably connected inside the ring frame (7). The connecting seat (10) is connected to the output end of the driving component (8). Several detection pieces (20) for detecting potential leakage points on the outer periphery of the flange (4) are rotatably connected to the surface of the connecting seat (10). Several arc-shaped sealing seats (30) are installed inside the ring frame (7). Several arc-shaped sealing seats (30) are connected to the rotating seat (9). A detection component (40) is fixedly installed on one side of the arc-shaped sealing seat (30). A concave frame (50) is fixedly installed on one side of the ring frame (7). A pushing component (60) is installed inside the concave frame (50). Tightening frames (70) are inclined on both sides inside the concave frame (50). The tightening frames (70) are in contact with the nuts (6). ​ 2. A gas extraction device for gas control according to claim 1, characterized in that: The ring frame (7) includes a first ring plate (71) and several first support rods (72) inclinedly installed on the surface of the first ring plate (71). A second ring plate (73) is fixedly installed at one end of the first support rod (72). An annular groove (74) is opened inside the second ring plate (73). A limit rod (75) is fixedly installed on one side of the first ring plate (71).

3. A gas extraction device for gas control according to claim 2, characterized in that: The driving component (8) includes a bracket (81) and a motor (82) fixed inside the bracket (81). The bracket (81) is fixedly connected to the first annular plate (71). A threaded rod (83) is fixedly installed at the output end of the motor (82), and the threaded rod (83) is rotatably connected to the first annular plate (71). A gear (84) is fixedly installed on the surface of the threaded rod (83).

4. A gas extraction device for gas control according to claim 3, characterized in that: The rotating seat (9) includes a third annular plate (91) and several second support rods (92) inclinedly installed on the surface of the third annular plate (91). The third annular plate (91) is rotatably connected to the first annular plate (71). A disc (93) is fixedly installed at one end of the second support rod (92). The disc (93) is rotatably connected to the annular groove (74). Several first arc-shaped grooves (94) are opened through the surface of the disc (93). An annular toothed plate (95) is fixedly installed inside the third annular plate (91), and the gear (84) meshes with the annular toothed plate (95).

5. A gas extraction device for gas control according to claim 4, characterized in that: The connecting seat (10) includes a fourth annular plate (101) and a first fixing block (102) fixedly installed inside the fourth annular plate (101). A threaded cylinder (103) is fixedly installed at one end of the first fixing block (102). The threaded cylinder (103) is threadedly connected to the threaded rod (83). A second fixing block (104) is also fixedly installed inside the fourth annular plate (101). A limiting cylinder (105) is fixedly installed at one end of the second fixing block (104), and the limiting cylinder (105) is slidably connected to the limiting rod (75).

6. A gas extraction device for gas control according to claim 5, characterized in that: A rubber block (201) is fixedly installed on the surface of the detection piece (20). A rotating plate (202) is fixedly installed on one end of the detection piece (20). The rotating plate (202) is in contact with the fourth annular plate (101). Rotating rods (203) are fixedly installed on both sides of the rotating plate (202). The rotating rods (203) are rotatably connected to the fourth annular plate (101). A torsion spring (204) is fixedly installed on the surface of the rotating rod (203), and one end of the torsion spring (204) is fixedly connected to the fourth annular plate (101).

7. A gas extraction device for gas control according to claim 6, characterized in that: The arc-shaped sealing seat (30) includes a frame plate (301) and a vertical rod (302) slidably connected inside the frame plate (301). The frame plate (301) is fixedly connected to the first annular plate (71). A connecting rod (303) is fixedly installed on one side of the vertical rod (302). The connecting rod (303) is slidably connected to the frame plate (301) and slidably connected to the first arc-shaped groove (94). An arc-shaped plate (304) is fixedly installed at one end of the vertical rod (302), and a sealing pad (305) is installed on one side of the arc-shaped plate (304).

8. A gas extraction device for gas control according to claim 7, characterized in that: The detection component (40) includes a fifth annular plate (401) and several fixing plates (402) fixedly installed on the surface of the fifth annular plate (401). The fixing plates (402) are fixedly connected to the frame plate (301). An annular contact sensor (403) is fixedly installed inside the fifth annular plate (401).

9. A gas extraction device for gas control according to claim 1, characterized in that: The concave frame (50) has two corresponding second arc-shaped grooves (501) inside; The pusher (60) includes a hydraulic cylinder (601) and a concave rod (602) fixed to the output end of the hydraulic cylinder (601), and the concave rod (602) is slidably connected to the concave frame (50); The tightening frame (70) has slide rods (701) fixedly installed on both sides, and the slide rods (701) are slidably connected to the second arc groove (501).

10. A gas extraction device for gas control according to claim 1, characterized in that: One end of the pump body (1) is connected to a storage tank (11). One end of the screw (5) is fixedly installed with a plug rod (51), and the plug rod (51) is slidably connected to the flange (4).

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