Downhole tubing network gas leak detection device

Abstract

This invention relates to the field of pipeline inspection technology and discloses a gas leak detection device for underground pipeline networks, including a first arc-shaped plate and a second arc-shaped plate installed below the first arc-shaped plate. Both the inner walls of the first and second arc-shaped plates are equipped with leak detection mechanisms. A dual-axis motor and symmetrically fixed support seats on both sides of the first arc-shaped plate are installed on the upper part of the first arc-shaped plate. The two output ends of the dual-axis motor are respectively fixed with output shafts. Through the arrangement of a first transmission shaft, a drive wheel, a connecting rod, a reciprocating push assembly, a transmission assembly, an "I"-shaped frame, and a pulling assembly, this invention enables the "arc"-shaped elastic sheet to repeatedly move along the gas pipeline during the movement of the first and second arc-shaped plates. This allows for the cleaning of impurities on the gas pipeline using cleaning cotton, avoiding manual cleaning or the use of other cleaning equipment, and reducing detection costs.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, specifically to a gas leak detection device for underground pipeline networks. Background Technology

[0002] The layout and connection of gas pipelines form a complete gas pipeline network system. This system involves rational planning and layout of the gas pipelines to ensure that gas can effectively reach consumption points from supply points and meet the needs of each consumption point. Gas pipelines are also connected to facilities such as pressure regulating stations and distribution stations to achieve gas control and distribution.

[0003] Before inspecting gas pipelines, it is usually necessary to clean the dust on the pipelines to prevent the dust from clogging the leak. Currently, cleaning is usually done manually or with specialized cleaning equipment. However, this method increases the workload of workers and leads to higher inspection costs. In addition, if a gas pipeline leak is detected, it is impossible to seal the leak, resulting in continuous gas leakage and waste.

[0004] Therefore, we proposed a gas leak detection device for underground pipeline networks to address the problems mentioned above. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art mentioned above, the purpose of this invention is to provide a gas leak detection device for underground pipeline networks, so as to solve the problems mentioned above in the background art, such as the inability of some existing products on the market to clean dust on gas pipelines and seal gas pipeline leak locations.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A gas leak detection device for underground pipelines includes a first arc-shaped plate and a second arc-shaped plate installed below the first arc-shaped plate. Leak detection mechanisms are installed on the inner walls of both the first and second arc-shaped plates. A dual-axis motor and symmetrically fixed support seats on both sides of the first arc-shaped plate are installed on the upper part of the first arc-shaped plate. Output shafts are fixed to the two output ends of the dual-axis motor. A drive wheel is rotatably mounted on the support seat. A first transmission shaft is installed at the center of the drive wheel. From bottom to top, a first locking assembly, a second locking assembly, a connecting rod, a first rotating seat, and a transmission assembly that cooperates with the output shaft are sequentially installed on the first transmission shaft. A mechanism for driving the connecting rod to move up and down is installed at the bottom of the first rotating seat. The movable lifting assembly has an "L"-shaped pin fixed to the side wall of the first arc-shaped plate. The lower part of the connecting rod has a hole for engaging with the "L"-shaped pin. A transmission mechanism is installed at the top of the connecting rod. A reciprocating pushing mechanism is installed inside the connecting rod. One end of the reciprocating pushing mechanism passes through the connecting rod and is connected to an "I"-shaped frame. A slider is slidably installed on the upper and lower parts of the "I"-shaped frame. Pulling components for engaging with the sliders are installed at the top and bottom of the "I"-shaped frame. A pressing component is installed on the opposite side of the slider. An arc-shaped elastic sheet is installed between the two pressing components. Cleaning cotton and sealing rubber strips are respectively provided on both sides of the arc-shaped elastic sheet.

[0010] Furthermore, the first arc-shaped plate and the second arc-shaped plate are respectively provided with moving components, the moving components including a rotating shaft and a driven wheel rotatably mounted on the rotating shaft.

[0011] Furthermore, the transmission assembly includes a driving bevel gear fixed to one end of the output shaft and a driven bevel gear fixed to the top of the first transmission shaft, and the driving bevel gear and the driven bevel gear mesh with each other.

[0012] Furthermore, the air leakage detection mechanism includes a control box installed on the outside of the first arc-shaped plate and a compression spring installed on the inner wall of the first arc-shaped plate. A touch sensor is installed inside the compression spring, and a ball is fixed to one end of the compression spring. A controller and an alarm are installed inside the control box. The output end of the touch sensor is electrically connected to the controller through a wire, and the controller is electrically connected to the alarm through a wire.

[0013] Furthermore, the first arc-shaped plate and the second arc-shaped plate are connected by a fixing assembly, which includes an upper fixing seat fixed to both ends of the first arc-shaped plate and a lower fixing seat fixed to both ends of the second arc-shaped plate. The upper fixing seat and the lower fixing seat are connected by bolts.

[0014] Furthermore, the lifting assembly includes an electric telescopic rod fixed to the bottom wall of the first rotating seat, a limit plate fixed to the bottom end of the electric telescopic rod, and an annular groove that cooperates with the limit plate on the top of the connecting rod.

[0015] Furthermore, the reciprocating pushing mechanism includes a gear shaft rotatably installed inside the connecting rod and a rack slidably installed on the inner side wall of the connecting rod. The bottom end of the gear shaft passes through the bottom of the connecting rod. Both the bottom wall of the connecting rod and the side wall of the rack are fixed with connecting seats, and a first spring is provided between the two connecting seats.

[0016] The top of the drive wheel has a circular groove, and multiple sets of meshing components are installed at equal intervals on the inner wall of the circular groove. The meshing components include teeth that are fixed at equal intervals to the inner wall of the circular groove.

[0017] Furthermore, the transmission mechanism includes a second rotating seat fixed on the connecting rod and a second transmission shaft rotatably installed in the second rotating seat. One end of the second transmission shaft extends into the "I"-shaped frame and a take-up reel is fixed thereon. The other end of the second transmission shaft is fixed with a bevel gear. A "semi-circular" bevel gear that cooperates with the bevel gear is fixed at the bottom of the first rotating seat.

[0018] Furthermore, the pulling assembly includes a box fixed to one end of the top of the "I"-shaped frame and a traction rope fixed to one side of the "I"-shaped frame. A fixed shaft is fixed inside the box, and a spring is fixed on the fixed shaft. One end of the spring passes through the "I"-shaped frame and is fixedly connected to the top of the slider. Two through holes are opened on the other side of the "I"-shaped frame, and the traction rope passes through the two through holes in sequence and is fixed on the take-up reel.

[0019] Furthermore, the pressing assembly includes a pressure plate disposed on one side of the slider, a second spring disposed between the slider and the pressure plate, a slide cylinder fixed to one side of the slider, a telescopic rod slidably installed inside the slide cylinder, and one end of the telescopic rod being fixedly connected to one side of the pressure plate.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) The present invention, through the arrangement of the first transmission shaft, the drive wheel, the connecting rod, the reciprocating push assembly, the transmission assembly, the "I" shaped frame and the pulling assembly, firstly, during the movement of the first arc plate and the second arc plate on the gas pipeline, enables the "arc" shaped elastic sheet to move repeatedly on the gas pipeline, thereby enabling the cleaning of impurities on the gas pipeline by cleaning cotton, avoiding manual cleaning or the use of other cleaning equipment, reducing detection costs, and also reducing the workload of staff; secondly, it can drive the "arc" shaped elastic sheet to rotate, thereby enabling the sealing rubber strip on one side of the "arc" shaped elastic sheet to seal the gas pipeline leak in time, reducing the waste of gas.

[0023] (2) The present invention is provided with a dual-axis motor, output shaft, transmission assembly, support seat, first transmission shaft, first rotating seat, drive wheel and moving assembly on the first arc plate and the second arc plate, so that the first arc plate and the second arc plate can be moved on the gas pipeline, and the gas pipeline can be detected by the gas leakage detection mechanism on the first arc plate and the second arc plate without manual inspection, thereby reducing the workload of the staff and providing convenience for the staff. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of a partial explosion structure of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of the connecting rod in this invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the first arc-shaped plate and the second arc-shaped plate in this invention;

[0028] Figure 5 This is a schematic cross-sectional view of the "I"-shaped frame in this invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the transmission mechanism in this invention;

[0030] Figure 7 This is a magnified schematic diagram of a portion of the structure at point A in this invention.

[0031] In the diagram: 1. First arc-shaped plate; 2. Second arc-shaped plate; 3. Fixing assembly; 31. Upper fixing seat; 32. Lower fixing seat; 33. Bolt; 41. Compression spring; 42. Touch sensor; 43. Ball; 44. Control box; 5. "L"-shaped pin; 6. Dual-axis motor; 7. Output shaft; 8. Transmission assembly; 81. Driving bevel gear; 82. Driven bevel gear; 9. Support seat; 10. First transmission shaft; 11. First rotating seat; 12. Driving wheel; 13. Connecting rod; 14. Reciprocating push mechanism; 141. Gear shaft; 142. Rack; 143. Connecting seat; 144. First spring; 145. Slide rail; 15. Lifting assembly; 151. Electric telescopic rod; 152. Limiting plate; 16. "I" shaped frame; 17. Slider; 181. Box body; 182. Spring; 183. Traction rope; 191. Second rotating seat; 192. Second drive shaft; 193. Take-up reel; 194. Bevel gear; 195. "Semi-circular" bevel gear; 20. Pressing assembly; 201. Second spring; 202. Slide cylinder; 203. Telescopic rod; 204. Pressure plate; 21. "Arc" shaped elastic sheet; 24. Moving assembly; 241. Rotating shaft; 242. Driven wheel. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] like Figure 1 and 2As shown: A gas leak detection device for underground pipeline networks includes a first arc-shaped plate 1, with a second arc-shaped plate 2 disposed at the lower part of the first arc-shaped plate 1. The first arc-shaped plate 1 and the second arc-shaped plate 2 can form a cylindrical structure. The first arc-shaped plate 1 and the second arc-shaped plate 2 are connected by a fixing component 3. The fixing component 3 can fix the first arc-shaped plate 1 and the second arc-shaped plate 2 together. A gas leak detection mechanism is installed on the inner wall of both the first arc-shaped plate 1 and the second arc-shaped plate 2. A mounting base is fixed at the center of the top of the first arc-shaped plate 1, and a dual-axis motor 6 is fixed on the mounting base. The mounting base serves to fix the dual-axis motor 6. Output shafts 7 are fixed to the two output ends of the dual-axis motor 6 respectively. A support base 9 is symmetrically fixed on both sides of an arc-shaped plate 1 about its axis. A drive wheel 12 is rotatably mounted on the support base 9. An arc-shaped through groove is formed on the first arc-shaped plate 1, and one-third of the drive wheel 12 extends through the arc-shaped through groove into the first arc-shaped plate 1. A first drive shaft 10 is slidably mounted up and down at the center of the drive wheel 12. A first locking assembly is installed at the bottom end of the first drive shaft 10. Specifically, the first locking assembly includes a first electromagnetic pin 101 installed at the bottom end of the first drive shaft 10, and multiple first locking holes that cooperate with the first electromagnetic pin 101 are equidistantly formed along the circumferential direction on the inner sidewall of the drive wheel 12. Through the setting of the first locking assembly, the first drive shaft 10... The first drive shaft 10 has a connecting rod 13 located at the lower part of the drive shaft 12, and an arc-shaped groove is provided on one side of the connecting rod 13. This arc-shaped groove prevents the rotating shaft 241 from interfering with the connecting rod 13 during rotation. The lower part of the first drive shaft 10 has a second locking assembly that works in conjunction with the connecting rod 13. Specifically, the second locking assembly includes a second electromagnetic pin 102 mounted on the first drive shaft 10. The inner sidewall of the connecting rod 13 has multiple second locking holes equidistantly spaced along the circumferential direction, which are adapted to the second electromagnetic pin 102. The second locking assembly and the second locking holes... The first drive shaft 10 can drive the connecting rod 13 to rotate. A first rotating seat 11 is rotatably mounted on the first drive shaft 10 and is fixed to the outside of the first arc plate 1. The first rotating seat 11 serves to limit the movement of the first drive shaft 10. A transmission assembly 8 is fixed to the top of the first drive shaft 10. Specifically, the transmission assembly 8 includes a driven bevel gear 82 fixed to the top of the first drive shaft 10 and a driving bevel gear 81 fixed to the end of the output shaft 7 away from the dual-axis motor 6. The driving bevel gear 81 meshes with the driven bevel gear 82. The driving bevel gear 81 and the driven bevel gear 82 serve to transmit power.A reciprocating pushing mechanism 14 is installed inside the connecting rod 13. One end of the reciprocating pushing mechanism 14 passes through the connecting rod 13 and is connected to an "I"-shaped frame 16. Second sliding grooves with a "convex" character-shaped cross-section are respectively formed in the upper and lower parts of the "I"-shaped frame 16. Sliders 17 are slidably installed in the second sliding grooves. Pressing components 20 are installed on the opposite sides of the sliders 17. The same "arc"-shaped elastic sheet 21 is installed between the two pressing components 20. Cleaning cotton and sealing rubber strips are respectively arranged on both sides of the "arc"-shaped elastic sheet 21.;

[0035] As Figure 1 shown: Moving components 24 are respectively arranged on the first arc-shaped plate 1 and the second arc-shaped plate 2. There are four moving components 24 on the first arc-shaped plate 1, two of which are located at both ends of the upper part of the first arc-shaped plate 1, and the other two are symmetrically arranged on both sides of the first arc-shaped plate 1. Two moving components 24 are symmetrically installed at the lower part of the second arc-shaped plate 2;

[0036] Specifically: The moving component 24 includes a rotating shaft 241, and a driven wheel 242 is rotatably installed on the rotating shaft 241. Through the setting of the moving component, when the moving component 24 cooperates with the driving wheel 12, it can drive the first arc-shaped plate 1 and the second arc-shaped plate 2 to move in the gas pipeline;

[0037] As Figure 4 shown: Specifically: The air leakage detection mechanism includes a control box 44 installed on the outer side of the first arc-shaped plate 1 and a compression spring 41 installed on the inner side wall of the first arc-shaped plate 1. A touch sensor 42 is arranged inside the compression spring 41. A sphere 43 is fixed at one end of the compression spring 41; The sphere 43 is made of foam material, which reduces the weight of the sphere 43. A controller and an alarm are installed in the control box 44. The output end of the touch sensor 42 is electrically connected to the controller through a wire, and the controller is electrically connected to the alarm through a wire; Through the setting of the air leakage detection mechanism, normal detection of the gas pipeline is ensured.

[0038] As Figure 4 shown: Specifically: The fixing component 3 includes an upper fixing seat 31 fixed at both ends of the first arc-shaped plate 1 and a lower fixing seat 32 fixed at both ends of the second arc-shaped plate 2. The upper fixing seat 31 and the lower fixing seat 32 are connected by bolts 33. Through the setting of the fixing component 3, the first arc-shaped plate 1 and the second arc-shaped plate 2 can be fixed together.

[0039] As Figure 3As shown: Specifically, the reciprocating push mechanism 14 includes a gear shaft 141 rotatably installed in the connecting rod 13 and a rack 142 installed in the connecting rod 13. The inner side wall of the connecting rod 13 is fixed with a slide rail 145 with a "convex" shaped cross section. A first slide groove with a "concave" shaped cross section is opened on one side of the rack 142, and the rack 142 is slidably installed on the slide rail 145 through the first slide groove. The slide rail 145 and the first slide groove limit the rack 142. One side of the rack 142 is smooth and toothless. A connecting seat 143 is fixed on the smooth surface of the rack 142 and the bottom wall of the connecting rod 13 respectively. The two ends of the first spring 144 are fixedly connected to one side of the connecting seat 143 respectively.

[0040] like Figure 2 As shown: the bottom end of the gear shaft 141 passes through the bottom of the connecting rod 13, and a circular groove is opened on the top of the drive wheel 12. Multiple sets of meshing components are installed at equal intervals on the inner wall of the circular groove. A certain gap is provided between adjacent meshing components. The meshing components include teeth 146 that are fixed at equal intervals on the inner wall of the circular groove.

[0041] By setting up a reciprocating mechanism, the arc-shaped elastic sheet 21 can be moved repeatedly through the "I"-shaped frame 16, slider 17, and pressing component 20, thereby enabling repeated cleaning of the gas pipeline.

[0042] like Figure 7 As shown: The pressing assembly 20 includes a pressure plate 204 disposed on one side of the slider 17. A second spring 201 is disposed between the slider 17 and the pressure plate 204. A slide cylinder 202 is symmetrically fixed on one side of the slider 17 about the second spring 201. A telescopic rod 203 is slidably installed inside the slide cylinder 202. One end of the telescopic rod 203 passes through the slide cylinder 202 and is fixedly connected to the top side of the pressure plate 204. The arrangement of the slide cylinder 202 and the telescopic rod 203 serves to limit the position of the pressure plate 204.

[0043] In the initial state: the first electromagnetic pin 101 is locked to one of the first locking holes on the drive wheel 12; the second electromagnetic pin 102 is unlocked to one of the second locking holes on the connecting rod 13.

[0044] When inspecting a gas pipeline network, since the network consists of multiple interconnected gas pipes, one pipe can be inspected first. To detect leaks, the first arc plate 1 and the second arc plate 2 are installed on the gas pipe. The upper fixing seat 31 and the lower fixing seat 32 are then secured together with bolts 33. The dual-axis motor 6 is then turned clockwise, causing its two output ends to drive the driving bevel gear 81 clockwise via the output shaft 7. The driving bevel gear 81, through the driven bevel gear 82, drives the first transmission shaft 10 to rotate, thus causing the first transmission shaft 10 to drive the driving bevel gear 82 to rotate. As the drive wheel 12 rotates, it engages with the outer surface of the gas pipeline. The drive wheel 12, in conjunction with multiple driven wheels 242, drives the first arc plate 1 and the second arc plate 2 to move along the gas pipeline. During rotation, the drive wheel 12 drives the gear shaft 141 via a meshing assembly. This gear shaft 141 then drives the rack 142. As the rack 142 moves the I-shaped frame 16, it pulls the first spring 144 via the connecting seat 143. At this point, the first spring 144 is in a stretched state. The I-shaped frame 16 then drives the connecting seat 143 via two sliders 17. The pressing components 20 move, so that every two pressing components 20 can drive the same "arc"-shaped elastic sheet 21 to move, allowing the cleaning cotton on one side of the "arc"-shaped elastic sheet 21 to move on the gas pipeline. If the engaging component disengages from the gear shaft 141, the first spring 144 loses tension and returns to its original position. Through the connecting seat 143, the first spring 144 pulls the rack 142, causing the rack 142 to drive the "I"-shaped frame 16 to return to its original position. The "I"-shaped frame 16 can then drive the slider 17 to return to its original position, and the slider 17 can then drive the pressing components 20 to return to their original positions, thus allowing the two pressing components 20 to move. The pressing component 20 can drive the "arc"-shaped elastic sheet 21 to return to its original position, thereby driving the cleaning cotton to return to its original position. The cleaning cotton can repeatedly move to clean the dust on the gas pipeline. If a gas leak occurs in the gas pipeline, the leaking gas will spray onto the ball 43. At this time, the ball 43 is subjected to the gas spray force and squeezes the compression spring 41. When the ball 43 comes into contact with the touch sensor 42, the touch sensor 42 receives the information and transmits the information to the controller. The controller can then control the alarm to sound an alarm to notify the staff.

[0045] Example 2

[0046] Although the above-described embodiment one can clean the dust on the gas pipeline and more accurately detect the location of the gas pipeline leak, it cannot seal the leak after the gas pipeline is detected. The gas pipeline is still in a leaking state after the detection, which wastes gas. Therefore, in order to overcome this technical defect, improvements are made based on embodiment one.

[0047] like Figure 2 As shown: The bottom of the first rotating seat 11 is equipped with a lifting assembly 15 for driving the connecting rod 13 to move up and down. Specifically: the lifting assembly 15 includes an electric telescopic rod 151 fixed to the bottom of the first rotating seat 11. The telescopic end of the electric telescopic rod 151 is fixed with a limiting plate 152. The top of the connecting rod 13 is provided with an annular groove. The limiting plate 152 is slidably installed in the annular groove. The cross-section of the annular groove is "convex". The "convex" shaped annular groove serves to limit the limiting plate 152 and prevent the limiting plate 152 from detaching from the annular groove.

[0048] like Figure 3 As shown: The side wall of the first arc plate 1 is fixed with an "L"-shaped pin 5. The lower part of the connecting rod 13 is provided with a socket for use with the "L"-shaped pin 5. When the connecting rod 13 moves downward, the socket on the connecting rod 13 is inserted into the "L"-shaped pin 5. The "L"-shaped pin 5 and the socket are designed to limit the position of the connecting rod 13.

[0049] like Figure 6 As shown: A transmission mechanism 19 is installed on the top of the connecting rod 13. The transmission mechanism 19 includes two second rotating seats 191 fixed on the connecting rod 13. The same second transmission shaft 192 is rotatably installed in the two second rotating seats 191. A bevel gear 194 is fixed at one end of the second transmission shaft 192. A semi-circular bevel gear 195 that cooperates with the bevel gear 194 is fixed at the bottom of the first rotating seat 11. The other end of the second transmission shaft 192 extends into the I-shaped frame 16 and a take-up reel 193 is fixed therein. Two take-up grooves are opened on the take-up reel 193.

[0050] like Figure 5As shown: The top and bottom of the "I"-shaped frame 16 are respectively equipped with a pulling component that works with the slider 17. The pulling component includes a box 181 fixed to one side of the "I"-shaped frame 16 and a traction rope 183 fixed to one side of the "I"-shaped frame 16. A fixed shaft is fixed inside the box 181. The inner end of the spring 182 is fixedly connected to the fixed shaft. The other end of the spring 182 passes through the "I"-shaped frame 16 and is fixedly connected to the top of the slider 17. A through hole is opened on the side of the "I"-shaped frame 16 away from the box 181. A through hole is also opened in the vertical section of the "I"-shaped frame 16. One end of the traction rope 183 passes through the through hole on the side of the "I"-shaped frame 16 away from the box 181 and the through hole in the vertical section and is fixedly connected to the take-up reel 193.

[0051] If a gas leak is detected, when the first arc plate 1 and the second arc plate 2 move to the designated position on the gas pipeline, the dual-axis motor 6 stops rotating clockwise, causing the first arc plate 1 and the second arc plate 2 to stop on the gas pipeline. The first electromagnetic pin 101 unlocks from the first locking hole on the drive wheel 12, and the second electromagnetic pin 102 locks from the second locking hole on the connecting rod 13. The electric telescopic rod 151 is then activated again, causing the electric telescopic rod 151 to drive the connecting rod 13 upward through the limit plate 152. This causes the insertion hole at the bottom of the connecting rod 13 to disengage from the "L"-shaped pin 5. The connecting rod 13 drives the second drive shaft 192 upward while also driving the rack 142. Moving upwards, the second drive shaft 192 drives the bevel gear 194 to mesh with the semi-circular bevel gear 195. The rack 142 drives the slider 17 upwards via the I-shaped frame 16, causing the slider 17 to drive the pressing assembly 20 upwards. Thus, every two pressing assemblies 20 can drive the arc-shaped elastic sheet 21 upwards. At this time, the lower pressing assembly 20 is in the pressing state. Then, the dual-axis motor 6 is turned on again, causing the two output ends of the dual-axis motor 6 to drive the output shaft 7 to drive the active bevel gear 81 to rotate counterclockwise. The active bevel gear 81 drives the driven bevel gear 82 to rotate, and the driven bevel gear 82 can drive the first drive shaft 10. The first rotating seat 11 rotates, and the first drive shaft 10 drives the connecting rod 13 to rotate counterclockwise during the rotation. During the rotation of the connecting rod 13, the bevel gear 194 and the semi-circular bevel gear 195 mesh, driving the bevel gear 194 to rotate. This causes the bevel gear 194 to drive the take-up reel 193 to rotate via the second drive shaft 192. The take-up reel 193 then pulls the two sets of traction ropes 183, causing the traction ropes 183 to wind around the take-up reel 193 and pull the slider 17. This allows the slider 17 to move to the other side of the I-shaped frame 16. The slider 17 then pulls the spring 182, at which point the spring 182 is in a state of tension. In the extended state, if the "arc"-shaped elastic piece 21 detaches from one side of the gas pipeline, the pressing component 20 located at the bottom returns to its original state, causing the pressing component 20 to drive the "arc"-shaped elastic piece 21 to move upward, so that the center of the two "arc"-shaped elastic pieces 21 is on the same horizontal plane as the axis of the first arc plate 1. If the two "arc"-shaped elastic pieces 21 rotate to the other side of the first arc plate 1 and the second arc plate 2, the arc surface of the gas pipeline squeezes the "arc"-shaped elastic piece 21, causing the "arc"-shaped elastic piece 21 to deform, so that the sealing rubber strip on the other side of the "arc"-shaped elastic piece 21 can seal the leaking part of the pipeline, preventing the gas pipeline from being in a leaking state.

[0052] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can also refer to an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances. Those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A downhole tubing network gas leakage detection device, comprising a first arc-shaped plate and a second arc-shaped plate installed at the lower part of the first arc-shaped plate, and a gas leakage detection mechanism is installed on the inner wall of the first arc-shaped plate and the second arc-shaped plate; characterized in that ； A dual-axis motor and symmetrically fixed support seats on both sides of the first arc-shaped plate are mounted on the upper part of the first arc-shaped plate. Output shafts are fixed to the two output ends of the dual-axis motor. A drive wheel is rotatably mounted on the support seat. A first transmission shaft is mounted at the center of the drive wheel. From bottom to top, a first locking assembly, a second locking assembly, a connecting rod, a first rotating seat, and a transmission assembly that works with the output shaft are sequentially mounted on the first transmission shaft. A lifting assembly for driving the connecting rod to move up and down is mounted at the bottom of the first rotating seat. An "L"-shaped pin is fixed to the side wall of the first arc-shaped plate. The connecting rod... The lower part has a socket for use with an "L"-shaped pin. A transmission mechanism is installed at the top of the connecting rod. A reciprocating pushing mechanism is installed inside the connecting rod. One end of the reciprocating pushing mechanism passes through the connecting rod and is connected to an "I"-shaped frame. A slider is slidably installed on the upper and lower parts of the "I"-shaped frame. Pulling components for use with the sliders are installed on the top and bottom of the "I"-shaped frame. A pressing component is installed on the opposite side of the slider. The same "arc"-shaped elastic sheet is installed between the two pressing components. Cleaning cotton and sealing rubber strips are respectively provided on both sides of the "arc"-shaped elastic sheet.

2. A downhole tubing network gas leak detection apparatus according to claim 1, characterised in that, Movable components are respectively provided on the first arc plate and the second arc plate. The movable components include a rotating shaft and a driven wheel rotatably mounted on the rotating shaft.

3. A downhole tubing network gas leak detection apparatus according to claim 1, wherein, The transmission assembly includes a driving bevel gear fixed to one end of the output shaft and a driven bevel gear fixed to the top of the first transmission shaft, and the driving bevel gear and the driven bevel gear mesh with each other.

4. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The air leakage detection mechanism is installed in a control box on the outside of the first arc plate and a compression spring on the inner side wall of the first arc plate. A touch sensor is installed inside the compression spring, and a ball is fixed at one end of the compression spring. A controller and an alarm are installed in the control box. The output end of the touch sensor is electrically connected to the controller through a wire, and the controller is electrically connected to the alarm through a wire.

5. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The first arc-shaped plate and the second arc-shaped plate are connected by a fixing assembly, which includes an upper fixing seat fixed to both ends of the first arc-shaped plate and a lower fixing seat fixed to both ends of the second arc-shaped plate. The upper fixing seat and the lower fixing seat are connected by bolts.

6. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The lifting assembly includes an electric telescopic rod fixed to the bottom wall of the first rotating seat, a limit plate fixed to the bottom end of the electric telescopic rod, and an annular groove that cooperates with the limit plate on the top of the connecting rod.

7. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The reciprocating pushing mechanism includes a gear shaft rotatably installed inside the connecting rod and a rack slidably installed on the inner side wall of the connecting rod. The bottom end of the gear shaft passes through the bottom of the connecting rod. Both the bottom wall of the connecting rod and the side wall of the rack are fixed with connecting seats. A first spring is provided between the two connecting seats. The top of the drive wheel has a circular groove, and multiple sets of meshing components are installed at equal intervals on the inner wall of the circular groove. The meshing components include teeth that are fixed at equal intervals to the inner wall of the circular groove.

8. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The transmission mechanism includes a second rotating seat fixed on a connecting rod and a second transmission shaft rotatably mounted inside the second rotating seat. One end of the second transmission shaft extends into the "I"-shaped frame and a take-up reel is fixed thereon. The other end of the second transmission shaft is fixed with a bevel gear. A "semi-circular" bevel gear that cooperates with the bevel gear is fixed at the bottom of the first rotating seat.

9. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The pulling assembly includes a box body fixed to one side of the "I" shaped frame and a traction rope fixed to one side of the "I" shaped frame. A fixed shaft is fixed inside the box body, and a spring is fixed on the fixed shaft. One end of the spring passes through the "I" shaped frame and is fixedly connected to the top of the slider. Two through holes are opened on the other side of the "I" shaped frame, and the traction rope passes through the two through holes in sequence and is fixed to the take-up reel.

10. The downhole tubing network gas leak detection apparatus of claim 1, wherein, The pressing assembly includes a pressure plate disposed on one side of the slider, a second spring disposed between the slider and the pressure plate, a slide cylinder fixed to one side of the slider, a telescopic rod slidably installed inside the slide cylinder, and one end of the telescopic rod being fixedly connected to one side of the pressure plate.

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