Gas leakage monitoring device

Abstract

The invention discloses a gas leakage monitoring device, and relates to the technical field of gas leakage monitoring, the gas leakage monitoring device comprises a leakage alarm, warning lamps are symmetrically installed on the top of the leakage alarm, and a leakage monitoring mechanism is installed on the back of the leakage alarm and used for detecting extracted gas. And the pumping and discharging power mechanism is installed in the air suction pipe and used for pumping surrounding air and discharging dust, and the one-way cleaning mechanism is arranged in the conveying pipe and used for cleaning adhesive dust. Through forward rotation of the pumping and discharging power mechanism, air in the environment can be actively extracted and conveyed into the leakage monitoring mechanism for detection, so that the influence of environmental factors such as the gas flowing speed can be effectively avoided, and the monitoring accuracy is improved; and meanwhile, the one-way cleaning mechanism can be driven to remove and discharge dust adhered to the inner wall of the conveying pipe by utilizing the reverse rotation of the pumping and discharging power mechanism, so that the influence of dust adhesion on the monitoring sensitivity is avoided.

Description

Technical Field

[0001] This invention relates to the field of gas leak monitoring technology, specifically a gas leak monitoring device. Background Technology

[0002] With the continuous growth of energy demand, natural gas, as an efficient and clean energy source, has been widely used in industrial production and daily life. However, the flammable and explosive nature of natural gas poses certain safety risks during storage, transportation, and use. Gas leaks occur frequently, posing a serious threat to people's lives and property. Therefore, it is necessary to monitor gas leaks in environments where natural gas is used or transported through gas leak detection devices to prevent safety accidents and improve the safety of gas transportation and use.

[0003] However, existing gas leak detection devices still have certain shortcomings in use; A petrochemical gas leak monitoring device, as proposed in application number CN202421231299.7, includes a leak detector and a connecting assembly. The leak detector includes a housing, a sensor, a display screen, an alarm light, and a fixing block. By setting up structural components such as the leak detector, housing, sensor, display screen, alarm light, fixing block, and connecting assembly, the leak detector can detect gas leaks and issue an audible and visual alarm. The connecting assembly facilitates the installation of the leak detector. The positioning assembly, used inside the cavity, allows the leak detector to be fixed after being connected to the mounting base. The disassembly assembly allows the leak detector to be detached from the mounting base, achieving the effect of quick manual installation or removal of the leak detector. This solves the problem of inconvenience for users to quickly disassemble, inspect, and install gas leak detectors. However, in actual use, the following problems still exist: The petrochemical gas leak monitoring device passively detects the gas concentration in the surrounding environment through the gas sensor in the leak alarm. However, this method is greatly affected by environmental factors, such as air flow speed, temperature and humidity. When the external air flow speed is too fast, the detection equipment will have difficulty in timely drawing in air mixed with gas, thus making it difficult to detect the gas leak in the first time and reducing the accuracy of monitoring. During long-term monitoring of gas leaks using this petrochemical gas leak monitoring device, dust in the environment can easily adhere to and accumulate on the surface of the gas sensor, making it difficult for the gas sensor to quickly and effectively detect gas in the air, thus further reducing the sensitivity of the petrochemical gas leak monitoring device.

[0004] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0005] To address the aforementioned issues, an innovative design was developed based on the existing gas leak monitoring device. Summary of the Invention

[0006] The purpose of this invention is to provide a gas leak monitoring device to solve the problems in the passive monitoring method described in the background art, which is easily affected by environmental factors, reducing accuracy, and the impact of dust adhesion on monitoring sensitivity.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a gas leak monitoring device, including a leak alarm, wherein warning lights are symmetrically installed on the top of the leak alarm; A leak detection device, installed on the back of a leak alarm, is used to detect extracted gas. The bottom of the leak alarm is fixedly installed with a support base, the bottom end of the support base is fixedly connected with an air suction pipe, the rear end of the air suction pipe is fixedly connected with a transmission pipe, the top end of the transmission pipe is connected to the leak monitoring mechanism, and the bottom of the transmission pipe is provided with a base plate. The exhaust power mechanism, installed inside the suction pipe, is used to draw in the surrounding air and expel dust. A one-way cleaning mechanism, located inside the transmission tube, is used to clean adhering dust. The reciprocating oscillation mechanism, installed at the rear of the leak detection mechanism, is used to achieve reciprocating oscillation to expand the gas extraction range.

[0008] Preferably, the leak detection mechanism includes a monitoring sensor fixedly installed on the back of the leak alarm. An air inlet is fixedly connected to the bottom of the monitoring sensor, and the bottom end of the air inlet is connected to the top end of the transmission pipe. Air outlets are fixedly installed on the left and right sides of the monitoring sensor. The monitoring sensor, the air inlet, and the air outlet are covered with a protective shell. The front side of the protective shell is fixedly connected to the back of the leak alarm. Ventilation grooves are provided at equal intervals on the left and right sides of the protective shell.

[0009] By adopting the above technical solution, the protective shell protects the monitoring sensor, air inlet and air outlet, preventing external objects from damaging the internal detection components. The gas dissipation groove allows the detected gas to be discharged quickly, preventing gas from accumulating inside the protective shell, ensuring that the monitoring sensor is always in a good working environment, and improving the accuracy and stability of the detection.

[0010] Preferably, the exhaust power mechanism includes a filter screen movably fitted into the front end of the intake pipe, a first bracket symmetrically mounted on the bottom of the intake pipe, a servo motor fixedly connected to the inner side of the first bracket, the shaft end of the servo motor being rotatably connected through the intake pipe, a driving bevel gear fixedly mounted on the shaft end of the servo motor, a driven bevel gear meshing with the front side of the driving bevel gear, an axial flow fan blade fixedly connected to the front end of the driven bevel gear, a connecting shaft seat fixedly connected to the outer ring of the axial flow fan blade, and the outer ring of the connecting shaft seat being fixedly connected to the inner wall of the intake pipe.

[0011] Using the above technical solution, the servo motor drives the axial flow fan blades to rotate through bevel gear transmission. It can actively and efficiently draw in the surrounding air when rotating in the forward direction. Compared with the traditional passive detection method, it greatly shortens the time for gas leaks to be detected. At the same time, it can avoid the influence caused by environmental factors. The filter screen can intercept larger dust particles in the air, prevent dust from entering the transmission pipe and monitoring sensor, reduce the interference of dust on the detection results, extend the service life of the device, and can effectively discharge the internal dust when rotating in the reverse direction, improving the cleaning effect.

[0012] Preferably, the bottom end of the transmission tube is fixedly connected to the base plate.

[0013] Preferably, the unidirectional cleaning mechanism includes a transmission rod rotatably mounted through the center of the base plate. A first gear is rotatably sleeved at the bottom end of the transmission rod. The first gear has a ratchet groove inside. A receiving groove is formed inside the transmission rod located inside the ratchet groove. A pawl is rotatably mounted inside the receiving groove. A return spring is symmetrically connected between the pawl and the receiving groove. The pawl and the receiving groove form an elastic return structure through the return spring. A second gear is meshed with the front side of the first gear. The second gear is fixedly connected to the shaft end of the servo motor. A cleaning brush is angularly fitted to the inner ring of the transmission tube.

[0014] Preferably, a first connecting rod is fixedly connected between the cleaning brush and the transmission rod at equal intervals.

[0015] By adopting the above technical solution, the extraction power mechanism cannot drive the one-way cleaning mechanism to rotate when rotating in the forward direction. This ensures that the one-way cleaning mechanism will not be affected during the extraction power mechanism's monitoring of the surrounding air. However, when the extraction power mechanism rotates in the reverse direction, it can drive the one-way cleaning mechanism to rotate. This allows the one-way cleaning mechanism to scrape off the dust adhering to the inner wall of the transmission pipe during rotation. Furthermore, it can work with the exhaust gas generated by the extraction power mechanism to discharge the scraped dust in a flow-through manner, thereby improving the cleaning effect.

[0016] Preferably, the cleaning brush has threaded holes at equal intervals inside, and a second connecting rod is threadedly connected inside the threaded holes. The inner end of the second connecting rod is rotatably connected to the transmission rod.

[0017] Preferably, the bottom end of the transmission tube is movably connected to the base plate, and the transmission tube and the base plate are symmetrically connected by an elastic connecting mechanism.

[0018] Preferably, the elastic connection mechanism includes fixed blocks symmetrically installed on the outer ring of the bottom of the transmission pipe, a limiting rod fixedly installed on the outer side of the fixed block, a movable retaining plate sleeved on the outer ring of the limiting rod, a telescopic spring sleeved on the outer ring of the limiting rod outside the movable retaining plate, and a connecting sleeve fixedly installed on the top surface of the bottom plate. The movable plate forms a telescopic structure through a telescopic spring and a limiting rod. The bottom end of the movable plate is misaligned and engaged with the base plate. The base plate and the connecting sleeve are engaged with the bottom end of the transmission pipe.

[0019] By adopting the above technical solution, it is easy to separate the base plate and the transmission pipe using the elastic connection mechanism. This allows for the disassembly of the transmission rod, cleaning brush, and second connecting rod during separation, which facilitates fine cleaning of the inside of the transmission pipe. At the same time, the threaded connection between the second connecting rod and the threaded hole enables the disassembly and replacement of the cleaning brush, facilitating convenient replacement when the cleaning brush ages or becomes damaged, thus improving the ease of maintenance of the gas leak monitoring device.

[0020] Preferably, the cyclic swing mechanism includes a support frame fixedly installed on the upper and lower sides of the protective shell. A rotating rod is fixedly connected to the rear end of the support frame, and a positioning seat is rotatably connected to the middle of the rotating rod. A mounting plate is fixedly connected to the rear side of the positioning seat. A sliding groove is opened inside the support frame. A second bracket is symmetrically installed on the front side of the mounting plate. A dual-axis drive motor is fixedly connected to the front end of the second bracket. Rotating plates are fixedly connected to both ends of the dual-axis drive motor. A transmission shaft is fixedly installed on the surface of the rotating plate, and the transmission shaft is slidably connected to the sliding groove.

[0021] Using the above technical solution, the dual-axis drive motor drives the rotating plate to rotate, causing the transmission shaft to slide in the groove, which in turn drives the leak detection mechanism to swing back and forth. This breaks through the limitation of fixed-position detection of traditional monitoring devices, and can extract and detect air in different directions and positions, significantly expanding the gas extraction range, enabling more comprehensive monitoring of gas leaks and reducing detection blind spots.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: This gas leak detection device can actively extract air from the environment and transport it into the leak detection mechanism for detection through the forward rotation of the extraction power mechanism. This effectively avoids the influence of environmental factors such as gas flow speed, thereby improving the accuracy of monitoring. At the same time, the reverse rotation of the extraction power mechanism can drive the unidirectional cleaning mechanism to remove and discharge dust adhering to the inner wall of the transmission pipe, preventing dust adhesion from affecting the sensitivity of monitoring and improving the effectiveness of the gas leak detection device. The specific details are as follows: 1. The extraction power mechanism can rotate in both directions. When rotating in the forward direction, it can extract air from the surrounding environment and deliver it to the leak detection mechanism for detection. It can accurately detect the surrounding air when the gas flow rate is too high, thereby improving the monitoring accuracy of the gas leak detection device and reducing the impact of environmental factors. 2. When the extraction power mechanism rotates in the opposite direction, it can generate an outward airflow and drive the one-way cleaning mechanism to rotate to scrape off the dust adhering to the inner wall of the transmission pipe. In conjunction with the outward airflow of the extraction power mechanism, the dust adhering inside the leak detection device and the scraped dust can be effectively discharged, avoiding the dust adhesion affecting the sensitivity of the monitoring and improving the use effect. 3. The cyclic swing mechanism enables the gas leak monitoring device to swing back and forth along a fan-shaped trajectory. This allows the extraction power mechanism to also swing in a fan-shaped cycle when extracting gas from the surrounding environment. This helps to expand the gas extraction range of the gas leak monitoring device, further reduces the impact of environmental factors, and improves the monitoring effect of the gas leak monitoring device. 4. The flexible connection mechanism facilitates quick connection and separation between the base plate and the transmission pipe. It also allows for the disassembly of the one-way cleaning mechanism during separation, enabling the replacement of aging or damaged cleaning brushes in the one-way cleaning mechanism. Furthermore, it allows for more detailed cleaning of the inside of the transmission pipe, improving the ease of cleaning and maintenance of the gas leak monitoring device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the front side view of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the rear side view of Embodiment 1 of the present invention; Figure 3 This is a side sectional view of the leakage monitoring mechanism in Embodiment 1 of the present invention; Figure 4 This is a side cross-sectional view of the intake pipe and transmission pipe in Embodiment 1 of the present invention; Figure 5This is a schematic diagram of the linkage structure between the pumping power mechanism and the one-way cleaning mechanism in Embodiment 1 of the present invention; Figure 6 This is a side cross-sectional view of the unidirectional cleaning mechanism in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the connection structure between the cyclic swing mechanism and the leakage monitoring mechanism in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the deflection structure of the cyclic swing mechanism in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the distribution structure of the unidirectional cleaning mechanism and the pumping power mechanism in Embodiment 2 of the present invention; Figure 10 This is an exploded view of the transmission pipe and base plate in Embodiment 2 of the present invention; Figure 11 This is a side sectional view of the elastic connection mechanism in Embodiment 2 of the present invention; Figure 12 This is an exploded structural diagram of the cleaning brush and the second connecting rod in Embodiment 2 of the present invention.

[0024] In the diagram: 1. Leakage alarm; 2. Warning light; 3. Monitoring sensor; 4. Air inlet; 5. Air outlet; 6. Protective housing; 7. Ventilation channel; 8. Support base; 9. Intake pipe; 10. Filter screen; 11. First bracket; 12. Servo motor; 13. Driving bevel gear; 14. Driven bevel gear; 15. Axial flow fan blade; 16. Connecting shaft seat; 17. Transmission pipe; 18. Base plate; 19. Transmission rod; 20. First gear; 21. Rattle groove; 22. Capacitor. 23. Pawl; 24. Return spring; 25. Second gear; 26. Cleaning brush; 27. First connecting rod; 28. Threaded hole; 29. ​​Second connecting rod; 30. Support frame; 31. Rotating rod; 32. Positioning seat; 33. Slide groove; 34. Drive shaft; 35. Rotating plate; 36. Second bracket; 37. Dual-axis drive motor; 38. Mounting plate; 39. Fixing block; 40. Limiting rod; 41. Movable clamping plate; 42. Telescopic spring; 43. Connecting sleeve. Detailed Implementation

[0025] 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.

[0026] Example 1: Please refer to Figure 1 - Figure 8The present invention provides a technical solution: a gas leak monitoring device, including a leak alarm 1, and warning lights 2 symmetrically installed on the top of the leak alarm 1. A leak detection mechanism is installed on the back of the leak alarm 1 to detect the extracted gas. The leak detection mechanism includes a monitoring sensor 3 fixedly installed on the back of the leak alarm 1. An air inlet 4 is fixedly connected to the bottom of the monitoring sensor 3. The bottom end of the air inlet 4 is connected to the top end of the transmission pipe 17. Air outlets 5 are fixedly installed on the left and right sides of the monitoring sensor 3. The monitoring sensor 3, the air inlet 4 and the air outlet 5 are covered with a protective shell 6. The front side of the protective shell 6 is fixedly connected to the back of the leak alarm 1. Gas dissipation grooves 7 are equally spaced on the left and right sides of the protective shell 6. Using the above scheme, the leak detection mechanism is installed on the back of the leak alarm 1, and the core component is the monitoring sensor 3. After the exhaust power mechanism is started, the surrounding air enters through the intake pipe 9 and the transmission pipe 17 from the air inlet 4 at the bottom of the monitoring sensor 3. The monitoring sensor 3 detects the gas concentration in the intake gas. When the gas concentration exceeds the preset safety threshold, it immediately sends a signal to the leak alarm 1, triggering the leak alarm 1 to work, illuminating the warning lights 2 symmetrically installed on its top, and emitting an alarm sound to alert the surrounding personnel that a gas leak has occurred. After the detection is completed, the gas is discharged through the air outlets 5 on the left and right sides of the monitoring sensor 3, and then diffuses into the surrounding environment through the gas dissipation grooves 7 on the left and right sides of the protective shell 6. The protective shell 6 can protect the monitoring sensor 3, the air inlet 4, and the air outlet 5, preventing external objects from colliding and damaging the internal detection components, and ensuring stable monitoring.

[0027] A support base 8 is fixedly installed at the bottom of the leakage alarm 1. An air intake pipe 9 is fixedly connected to the bottom end of the support base 8. A transmission pipe 17 is fixedly connected to the rear end of the air intake pipe 9. The top end of the transmission pipe 17 is connected to the leakage monitoring mechanism. A base plate 18 is provided at the bottom of the transmission pipe 17. A suction and exhaust power mechanism is installed inside the air intake pipe 9 to extract the surrounding air and exhaust dust. The suction and exhaust power mechanism includes a filter screen 10 that is movably fitted into the front end of the air intake pipe 9. A first bracket 11 is symmetrically installed at the bottom of the air intake pipe 9. A servo motor 12 is fixedly connected to the inner side of the first bracket 11. The shaft end of the servo motor 12 is rotatably connected to the air intake pipe 9. An active bevel gear 13 is fixedly installed at the shaft end of the servo motor 12. A driven bevel gear 14 is meshed with the front side of the active bevel gear 13. An axial flow fan blade 15 is fixedly connected to the front end of the driven bevel gear 14. A connecting shaft seat 16 is fixedly connected to the outer ring of the axial flow fan blade 15. The outer ring of the connecting shaft seat 16 is fixedly connected to the inner wall of the air intake pipe 9. Using the above scheme, the exhaust power mechanism is installed inside the intake pipe 9. Its operation is powered by the servo motor 12. After the servo motor 12 is started, the shaft end drives the active bevel gear 13 to rotate. The active bevel gear 13 meshes with the driven bevel gear 14, thereby driving the driven bevel gear 14 to rotate. The axial flow fan blade 15, which is fixedly connected to the front end of the driven bevel gear 14, rotates at high speed. The forward rotation of the axial flow fan blade 15 generates a strong suction force, which draws the surrounding air from the front end of the intake pipe 9. The filter screen 10, which is movably fitted at the front end of the intake pipe 9, intercepts larger dust particles in the air, preventing dust from entering the transmission pipe 17 and the monitoring sensor 3, thus performing preliminary filtration of the air. The air that has passed the preliminary filtration enters the transmission pipe 17 along the intake pipe 9 and is transported to the air inlet 4 of the leak monitoring mechanism to provide sample gas for gas concentration detection. When the axial fan blade 15 rotates in the opposite direction, it can generate reverse suction. At this time, the filter screen 10 can be disassembled, and the dust inside the intake pipe 9, transmission pipe 17 and leakage monitoring mechanism can be powerfully sucked out, achieving the effect of internal cleaning.

[0028] The bottom end of the transmission tube 17 is fixedly connected to the base plate 18. A one-way cleaning mechanism is set inside the transmission tube 17 to clean the adhering dust. The one-way cleaning mechanism includes a transmission rod 19 that is rotatably installed through the center of the base plate 18. The bottom end of the transmission rod 19 is rotatably sleeved with a first gear 20. The first gear 20 has a ratchet groove 21 inside. The transmission rod 19 located inside the ratchet groove 21 has a receiving groove 22 inside. A pawl 23 is rotatably installed inside the receiving groove 22. A return spring 24 is symmetrically connected between the pawl 23 and the receiving groove 22. The pawl 23 and the receiving groove 22 form an elastic return structure through the return spring 24. A second gear 25 is meshed and connected to the front side of the first gear 20. The second gear 25 is fixedly connected to the shaft end of the servo motor 12. A cleaning brush 26 is equidistantly fitted to the inner ring of the transmission tube 17. A first connecting rod 27 is fixedly connected to the cleaning brush 26 and the transmission rod 19 at equal intervals. Using the above scheme, when the servo motor 12 starts, its shaft begins to rotate. Since the second gear 25 is fixedly connected to the shaft of the servo motor 12, the second gear 25 will rotate synchronously with the shaft of the servo motor 12. The second gear 25 and the first gear 20 are in a meshing state. When the second gear 25 rotates, it will drive the first gear 20 to rotate. The first gear 20 has a ratchet groove 21 inside, and the part of the transmission rod 19 located inside the ratchet groove 21 has a receiving groove 22. A pawl 23 is rotatably installed in the receiving groove 22, and the pawl 23 and the receiving groove 22 are connected by a return spring 24 to form an elastic return structure. When the second gear 25 drives the first gear 20 to rotate in a specific direction, such as the axial fan blade 15 in the opposite direction, the pawl 23 engages with the ratchet teeth of the ratchet groove 21 under the action of the return spring 24. The rotation of the first gear 20 will drive the transmission rod 19 to rotate synchronously. Then, when the transmission rod 19 rotates, it will drive the cleaning brush 26 to make a circular motion around the central axis of the transmission tube 17. During the movement, the cleaning brush 26 adheres to the inner wall of the transmission tube 17, thereby cleaning the dust adhering to the inner wall of the transmission tube 17, preventing the dust from accumulating on the inner wall of the transmission tube 17, and the scraped dust will be discharged with the reverse suction force generated by the axial fan blade 15.

[0029] When the second gear 25 drives the first gear 20 to rotate in the opposite direction, such as when the axial fan blade 15 rotates in the forward direction, the pawl 23 will slide on the ratchet of the ratchet groove 21. At this time, the pawl 23 will compress the return spring 24, so that the transmission rod 19 will not rotate with the first gear 20, thus preventing the cleaning brush 26 from rotating in the opposite direction and ensuring the unidirectionality and effectiveness of the cleaning work.

[0030] A circulating swing mechanism is installed on the rear side of the leak detection mechanism to realize reciprocating swing to expand the gas extraction range. The circulating swing mechanism includes a support frame 30 fixedly installed on the upper and lower sides of the protective shell 6. A rotating rod 31 is fixedly connected to the rear end of the support frame 30. A positioning seat 32 is rotatably connected to the middle of the rotating rod 31. A mounting plate 38 is fixedly connected to the rear side of the positioning seat 32. A sliding groove 33 is opened inside the support frame 30. A second bracket 36 is symmetrically installed on the front side of the mounting plate 38. A dual-axis drive motor 37 is fixedly connected to the front end of the second bracket 36. Rotating plates 35 are fixedly connected to both ends of the dual-axis drive motor 37. A transmission shaft 34 is fixedly installed on the surface of the rotating plate 35. The transmission shaft 34 is slidably connected to the sliding groove 33. Using the above scheme, the two ends of the dual-axis drive motor 37 drive the rotating plate 35 fixedly connected to it to rotate synchronously. Since the transmission shaft 34 fixedly installed on the surface of the rotating plate 35 is slidably connected to the slide groove 33 opened inside the support frame 30, as the rotating plate 35 rotates, the transmission shaft 34 will slide back and forth in the slide groove 33. During this process, the sliding of the transmission shaft 34 will exert a force on the mounting plate 38. When the transmission shaft 34 slides in the slide groove 33, it will drive the mounting plate 38 to swing back and forth around the rotating rod 31 as the axis. Since the mounting plate 38 fixedly connected to the rear side of the positioning seat 32 is connected to the protective shell 6 of the leakage monitoring mechanism, the swing of the mounting plate 38 will drive the entire leakage monitoring mechanism to swing back and forth. During the swing of the leakage monitoring mechanism, the components such as the suction pipe 9 and the transmission pipe 17 connected to its bottom will also change their position and angle, so that the suction pipe 9 can extract air samples from different directions and positions, and at the same time expand the monitoring range.

[0031] Example 2: Based on Example 1, the present invention adopts the following... Figure 9 - Figure 12 The technical solution shown further discloses that the cleaning brush 26 has threaded holes 28 evenly spaced inside, and a second connecting rod 29 is threadedly connected inside the threaded holes 28. The inner end of the second connecting rod 29 is rotatably connected to the transmission rod 19. The bottom end of the transmission pipe 17 is movably connected to the base plate 18. An elastic connecting mechanism is symmetrically connected between the transmission pipe 17 and the base plate 18. The elastic connecting mechanism includes a fixing block 39 symmetrically installed on the outer ring of the bottom of the transmission pipe 17. A limit rod 40 is fixedly installed on the outer side of the fixing block 39. A movable locking plate 41 is sleeved on the outer ring of the limit rod 40. A telescopic spring 42 is sleeved on the outer ring of the limit rod 40 outside the movable locking plate 41. A connecting sleeve 43 is fixedly installed on the top surface of the base plate 18. The movable locking plate 41 forms a telescopic structure with the limit rod 40 through the telescopic spring 42. The bottom end of the movable locking plate 41 is misaligned and engaged with the base plate 18. The base plate 18 and the connecting sleeve 43 are engaged with the bottom end of the transmission pipe 17. Using the above scheme, the threaded holes 28 that are equally spaced inside the cleaning brush 26 are threadedly connected to the second connecting rod 29, and the inner end of the second connecting rod 29 is rotatably connected to the transmission rod 19. When the one-way cleaning mechanism is working, the transmission rod 19 rotates and drives the cleaning brush 26 to make a circular motion around the central axis of the transmission tube 17 through the second connecting rod 29, so as to clean the dust on the inner wall of the transmission tube 17. When the cleaning brush 26 needs to be replaced due to wear and aging after long-term use, manually pull the movable clamping plate 41 outward and compress the telescopic spring 42 to disengage the bottom end of the movable clamping plate 41 from the misaligned engagement state with the base plate 18. At this time, the engagement restriction between the base plate 18 and the bottom end of the transmission pipe 17 is released, and the base plate 18 can be easily removed from the bottom end of the transmission pipe 17, thereby disassembling the transmission rod 19, the second connecting rod 29, and the cleaning brush 26. Then, due to the detachability of the threaded connection, simply turn the second connecting rod 29 to unscrew it from the threaded hole 28 to remove the cleaning brush 26 from the second connecting rod 29. When installing a new cleaning brush 26, align its threaded hole 28 with the second connecting rod 29 and turn the second connecting rod 29 in the opposite direction to reconnect it tightly with the threaded hole 28 to complete the replacement. When the base plate 18 needs to be installed, align the base plate 18 with the bottom end of the transmission pipe 17, so that the connecting sleeve 43 on the top surface of the base plate 18 is aligned with the bottom end of the transmission pipe 17. At this time, the movable clamping plate 41 automatically moves inward under the elastic restoring force of the telescopic spring 42. As the base plate 18 gradually approaches the transmission pipe 17, the bottom end of the movable clamping plate 41 will re-form a misaligned engagement with the base plate 18. At the same time, the base plate 18 and the connecting sleeve 43 are engaged and connected with the bottom end of the transmission pipe 17, so that the base plate 18 is securely installed at the bottom of the transmission pipe 17.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] 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 leak monitoring device, comprising a leak alarm (1), wherein warning lights (2) are symmetrically mounted on the top of the leak alarm (1), characterized in that: Leakage detection device, which is installed on the back of the leak alarm (1) for detecting the extracted gas; The bottom of the leak alarm (1) is fixedly installed with a support base (8), the bottom end of the support base (8) is fixedly connected with an air suction pipe (9), the rear end of the air suction pipe (9) is fixedly connected with a transmission pipe (17), the top end of the transmission pipe (17) is connected to the leak monitoring mechanism, and the bottom of the transmission pipe (17) is provided with a base plate (18). The exhaust power mechanism, which is installed inside the suction pipe (9), is used to extract the surrounding air and expel dust. A one-way cleaning mechanism is installed inside the transmission pipe (17) to clean the adhering dust; The reciprocating oscillation mechanism, installed at the rear of the leak detection mechanism, is used to achieve reciprocating oscillation to expand the gas extraction range.

2. The gas leak monitoring device according to claim 1, characterized in that: The leakage monitoring mechanism includes a monitoring sensor (3) fixedly installed on the back of the leakage alarm (1). The bottom of the monitoring sensor (3) is fixedly connected to an air inlet (4). The bottom end of the air inlet (4) is connected to the top end of the transmission pipe (17). Air outlets (5) are fixedly installed on the left and right sides of the monitoring sensor (3). The monitoring sensor (3), the air inlet (4) and the air outlet (5) are covered with a protective shell (6). The front side of the protective shell (6) is fixedly connected to the back of the leakage alarm (1). Air dissipation grooves (7) are provided at equal intervals on the left and right sides of the protective shell (6).

3. A gas leak monitoring device according to claim 2, characterized in that: The exhaust power mechanism includes a filter screen (10) that is movably fitted into the front end of the intake pipe (9). A first bracket (11) is symmetrically installed at the bottom of the intake pipe (9). A servo motor (12) is fixedly connected to the inner side of the first bracket (11). The shaft end of the servo motor (12) is rotatably connected through the intake pipe (9). An active bevel gear (13) is fixedly installed on the shaft end of the servo motor (12). A driven bevel gear (14) is meshed with the front side of the active bevel gear (13). An axial flow fan blade (15) is fixedly connected to the front end of the driven bevel gear (14). A connecting shaft seat (16) is fixedly connected to the outer ring of the axial flow fan blade (15). The outer ring of the connecting shaft seat (16) is fixedly connected to the inner wall of the intake pipe (9).

4. A gas leak monitoring device according to claim 3, characterized in that: The bottom end of the transmission tube (17) is fixedly connected to the base plate (18).

5. A gas leak monitoring device according to claim 4, characterized in that: The one-way cleaning mechanism includes a transmission rod (19) that is rotatably mounted through the center of the base plate (18). The bottom end of the transmission rod (19) is rotatably sleeved with a first gear (20). The first gear (20) has a ratchet groove (21) inside. The transmission rod (19) located inside the ratchet groove (21) has a receiving groove (22) inside. A pawl (23) is rotatably mounted inside the receiving groove (22). A return spring (24) is symmetrically connected between the pawl (23) and the receiving groove (22). The pawl (23) and the receiving groove (22) form an elastic return structure through the return spring (24). The front side of the first gear (20) is meshed with a second gear (25). The second gear (25) is fixedly connected to the shaft end of the servo motor (12). The inner ring of the transmission tube (17) is fitted with a cleaning brush (26) at an equal angle.

6. A gas leak monitoring device according to claim 5, characterized in that: The cleaning brush (26) and the transmission rod (19) are fixedly connected at equal intervals by a first connecting rod (27).

7. A gas leak monitoring device according to claim 5, characterized in that: The cleaning brush (26) has threaded holes (28) at equal intervals inside. The threaded holes (28) are threaded with a second connecting rod (29). The inner end of the second connecting rod (29) is rotatably connected to the transmission rod (19).

8. A gas leak monitoring device according to claim 2, characterized in that: The cyclic swing mechanism includes a support frame (30) fixedly installed on the upper and lower sides of the protective shell (6). A rotating rod (31) is fixedly connected to the rear end of the support frame (30). A positioning seat (32) is rotatably connected to the middle of the rotating rod (31). An installation plate (38) is fixedly connected to the rear side of the positioning seat (32). A sliding groove (33) is opened inside the support frame (30). A second bracket (36) is symmetrically installed on the front side of the installation plate (38). A dual-axis drive motor (37) is fixedly connected to the front end of the second bracket (36). A rotating plate (35) is fixedly connected to both ends of the dual-axis drive motor (37). A transmission shaft (34) is fixedly installed on the surface of the rotating plate (35). The transmission shaft (34) is slidably connected to the sliding groove (33).

9. A gas leak monitoring device according to claim 3, characterized in that: The bottom end of the transmission tube (17) is movably connected to the base plate (18), and the transmission tube (17) and the base plate (18) are symmetrically connected by an elastic connection mechanism.

10. A gas leak monitoring device according to claim 9, characterized in that: The elastic connection mechanism includes a fixed block (39) symmetrically installed on the outer ring of the bottom of the transmission pipe (17). A limit rod (40) is fixedly installed on the outer side of the fixed block (39). A movable plate (41) is sleeved on the outer ring of the limit rod (40). A telescopic spring (42) is sleeved on the outer ring of the limit rod (40) on the outer side of the movable plate (41). A connecting sleeve (43) is fixedly installed on the top surface of the bottom plate (18). The movable plate (41) forms a telescopic structure with the telescopic spring (42) and the limiting rod (40). The bottom end of the movable plate (41) is misaligned and engaged with the bottom plate (18). The bottom plate (18) and the connecting sleeve (43) are engaged with the bottom end of the transmission pipe (17).

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