A pipeline gas cylinder leakage detection device

Abstract

The application relates to the technical field of gas cylinder detection, and discloses a pipeline gas cylinder leakage detection device which comprises a driving assembly, a guiding assembly and a detection assembly. The driving assembly comprises a first rotating disc, a second rotating disc and a motor, the first rotating disc is coaxially connected with the second rotating disc, the motor is drivingly connected to the first rotating disc, the detection assembly is arranged on the second rotating disc, the guiding assembly comprises a guiding inner ring and a guiding outer ring, the guiding inner ring and the guiding outer ring are arranged on the first rotating disc, and the guiding inner ring and the guiding outer ring cooperate with the first rotating disc to form a transportation channel. In the application, when the gas cylinder is transported, the detection assembly arranged on the second rotating disc can continuously detect the gas cylinder, manual detection of the gas cylinder is not needed, the influence of human factors on the detection result of the gas cylinder is reduced, the detection time is quantified according to the transportation time, the gas cylinder rotates around the first rotating disc while rotating around its own axis, and the detection assembly can detect the bottle valve and the bottle shoulder connecting position of the gas cylinder from all angles.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder testing technology, and in particular to a gas cylinder leak detection device for a production line. Background Technology

[0002] Because the combustion of natural gas produces less exhaust gas than that of gasoline and diesel, cars using natural gas as fuel are becoming increasingly common. As a fuel storage device in dual-fuel vehicles, the safety of the working state of natural gas, due to its special properties, is of paramount importance to the safety of the vehicle and its occupants.

[0003] Sealing performance testing is a crucial technical specification for gas cylinders. Using a gas cylinder that fails to meet sealing requirements will have varying degrees of consequences. It not only wastes gas resources, increases fuel consumption, and exacerbates environmental pollution, but serious leaks can also directly lead to explosions, potentially causing extremely serious safety accidents in emergencies.

[0004] Currently, most gas cylinder manufacturers in China still use the traditional water immersion method for testing. While this method is simple to operate (immersion in water and observation for bubbles) and low-cost, it has significant drawbacks. First, it is heavily influenced by human factors; during the process of filling the gas cylinder and placing it in water, external air can introduce interfering bubbles, affecting the operator's judgment. Second, the testing time and standards cannot be quantified and largely depend on the operator's experience. Third, whether or not testing has been conducted depends on the operator's work attitude and sense of responsibility, making it difficult to guarantee consistent product testing. Fourth, after testing, the gas cylinders need to be dried and cleaned, reducing production efficiency and increasing energy consumption. Fifth, because high-pressure compressed air is required during testing, defects in the materials can easily lead to gas cylinder explosions and other safety accidents, jeopardizing the operator's personal safety. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a gas cylinder leak detection device for a production line, which solves the problem that human factors can easily affect the detection results and harm the human body in the existing gas cylinder leak detection process.

[0006] The present invention solves the above-mentioned technical problems through the following technical means:

[0007] A gas cylinder leak detection device for a production line includes a drive assembly, a guide assembly, and a detection assembly. The drive assembly includes a first turntable, a second turntable, and a motor. The first turntable and the second turntable are coaxially connected, and the motor is driven to the first turntable. The detection assembly is disposed on the second turntable. The guide assembly includes an inner guide ring and an outer guide ring, which are disposed on the first turntable. The inner and outer guide rings cooperate with the first turntable to form a transport channel. Multiple first drive rollers are rotatably arranged along the circumference of the inner guide ring near the transport channel. Multiple second drive rollers are rotatably arranged along the circumference of the outer guide ring near the transport channel. The spacing between the first and second drive rollers matches the outer diameter of the gas cylinder. The device also includes a transmission assembly capable of driving the first and second drive rollers to rotate in the same direction.

[0008] With this setup, the gas cylinders are transported using a first turntable and a guiding assembly. During transport, a detection component on a second turntable continuously monitors the cylinders, eliminating the need for manual inspection and reducing the impact of human error on the results. The detection time is quantified with the transport time, ensuring consistent detection for each cylinder, eliminating the need for observation while submerged in water. Furthermore, during transport on the first turntable, the first and second drive rollers compress the cylinder body, driving it to rotate on its own axis while revolving with the first turntable. This ensures the detection component can perform 360-degree, seamless inspection of the valve and shoulder connection points, resulting in excellent detection performance.

[0009] Furthermore, the transmission assembly includes a first drive ring, a first annular groove is formed on the circumference of the inner guide ring, a first rotating shaft is provided on the side of the first drive roller near the first annular groove, one end of the first rotating shaft is connected to the first drive roller, and the other end is disposed in the first annular groove, a first transmission gear is connected to the end of the first rotating shaft located in the first annular groove, the first drive ring is rotatably connected to the first annular groove, and the inner wall of the first drive ring is provided with teeth that mesh with the first transmission gear.

[0010] With this configuration, the first drive ring drives all the first rotating rollers, ensuring that the first rotating rollers can fit against the periphery of the gas cylinder and drive the gas cylinder to rotate during the gas cylinder transportation process. This helps the detection component to detect whether the gas cylinder is leaking from multiple angles.

[0011] Furthermore, the transmission assembly also includes a second drive ring. A second annular groove is formed on the inner wall of the guide outer ring. A second rotating shaft is provided on the side of the second drive roller near the second annular groove. One end of the second rotating shaft is connected to the second drive roller, and the other end is disposed in the second annular groove. A second transmission gear is connected to the end of the second rotating shaft located in the second annular groove. The second drive ring is rotatably connected to the second annular groove. Teeth that mesh with the second transmission gear are provided on the periphery of the second drive ring.

[0012] With this configuration, the second drive ring drives all the second rotating rollers, ensuring that the second rotating rollers can fit against the periphery of the gas cylinder and drive the gas cylinder to rotate during the gas cylinder transportation process. This helps the detection component to detect whether the gas cylinder is leaking from multiple angles.

[0013] Furthermore, the first turntable includes a turntable base and a turntable platform. The turntable platform is fixed on the turntable base and embedded in the transport channel. The turntable platform can drive the first drive ring and the second drive ring to rotate.

[0014] With this setup, the turntable drives the first and second rotating rollers to rotate, achieving the goal of using the turntable to drive the gas cylinder to revolve around the sun while simultaneously driving the gas cylinder to rotate on its own axis. This eliminates the need for multiple drive motors; a single motor can drive the movement of the gas cylinder, reducing the number of motors required.

[0015] Furthermore, it also includes a limiting component, which includes a limiting inner ring and a limiting outer ring. The limiting inner ring is fixedly connected to the guiding inner ring, and the limiting outer ring is fixedly connected to the guiding outer ring. The limiting inner ring and the limiting outer ring are respectively matched with the guiding inner ring and the guiding outer ring. The height of the limiting outer ring is not higher than the second turntable.

[0016] This design prevents the gas cylinder from tipping over during transport. As the gas cylinder moves within the transport channel, the limiting component works in conjunction with the guiding component to guide the transport direction of the gas cylinder, ensuring its proper movement within the transport channel and improving the detection effect of the detection component.

[0017] Furthermore, both the first turntable and the second turntable are provided with weight reduction holes.

[0018] This configuration reduces the motor's output torque, improves energy utilization, and lowers the requirements and costs associated with using the motor.

[0019] Furthermore, both the limiting outer ring and the guiding outer ring are provided with an input port and an output port, and both the guiding outer ring and the limiting outer ring are provided with a guide plate at the output port.

[0020] This setup allows the device to be connected to the gas cylinder transport line, eliminating the need for manual cylinder handling and reducing the burden of cylinder transport.

[0021] Furthermore, both the inner and outer limiting rings are provided with rotating rollers, which are rotatably connected to the inner or outer limiting rings.

[0022] Furthermore, the device also includes a bracket for supporting the motor, the guide assembly, and the restraint assembly.

[0023] Furthermore, a rubber layer is provided on the periphery of the first drive roller and the second drive roller.

[0024] This configuration allows the first and second drive rollers to come into close contact with the periphery of the gas cylinder, increasing the friction between the first and second drive rollers and the gas cylinder, and facilitating the first and second drive rollers to drive the gas cylinder to rotate stably.

[0025] The beneficial effects of this invention are:

[0026] 1. This application uses a first turntable in conjunction with a guide assembly to transport gas cylinders. During transportation, a detection assembly set on a second turntable can continuously detect the gas cylinders without the need for manual inspection, reducing the impact of human factors on the detection results. Moreover, the detection time is quantified according to the transportation time, and the detection time for each gas cylinder is consistent, eliminating the need for observation while submerged in water. Furthermore, during the transportation of the gas cylinders on the first turntable, the first and second drive rollers can squeeze the cylinder body, driving the gas cylinder to rotate on its own axis while revolving with the first turntable. This ensures that the detection assembly can detect the valve and shoulder connection of the gas cylinder 360 degrees without blind spots, resulting in good detection performance.

[0027] 2. This application uses a turntable to drive the first rotating roller and the second rotating roller to rotate, so that the turntable can drive the gas cylinder to revolve around the sun while also driving the gas cylinder to rotate on its own axis. There is no need to set up multiple sets of drive motors. Only a single motor is needed to drive the movement of the gas cylinder, thus reducing the number of motors used.

[0028] 3. This application can prevent gas cylinders from tipping over during movement. During the movement of gas cylinders in the transport channel, the limiting component can cooperate with the guiding component to guide the transport direction of the gas cylinders, ensuring the movement posture of the gas cylinders during transport in the transport channel and improving the detection effect of the detection component. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram showing the connection between the inner guide ring and the inner constraint ring of the present invention;

[0031] Figure 3 This is a schematic diagram showing the connection between the guide outer ring and the constraint outer ring of the present invention;

[0032] Figure 4 This is a schematic diagram showing the connection between the first and second turntables of the present invention;

[0033] Figure 5 This is a schematic diagram of the connection of the X-shaped bracket in Embodiment 2 of the present invention;

[0034] Figure 6 This is a schematic diagram of the X-shaped bracket in Embodiment 2 of the present invention;

[0035] in,

[0036] 11. First turntable; 111. Turntable base; 112. Turntable; 12. Second turntable; 14. Transport channel; 151. First drive ring; 152. Second drive ring; 16. Weight reduction hole;

[0037] 21. Inner guide ring; 211. First drive roller; 212. First annular groove; 213. First rotating shaft; 214. First transmission gear; 22. Outer guide ring; 221. Second drive roller; 222. Second annular groove; 223. Second rotating shaft; 224. Second transmission gear;

[0038] 40. Detection components;

[0039] 41. Inner limiting ring; 42. Outer limiting ring; 43. Inlet; 44. Outlet; 45. Guide plate; 46. Rotating roller;

[0040] 51. X-shaped bracket; 52. Hinged pivot; 53. Opening; 54. Sleeve; 55. Connecting shaft; 56. Mounting base; 58. Protrusion; 59. Arc-shaped convex surface. Detailed Implementation

[0041] 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.

[0042] Example 1

[0043] like Figure 1-4As shown, a gas cylinder leak detection device for a production line according to the present invention includes a drive assembly, a guide assembly, and a detection assembly 40. The drive assembly is used to drive the gas cylinder to rotate, including revolution and rotation. The guide assembly is used to guide the movement direction of the gas cylinder. The detection assembly 40 is used to detect whether a leak has occurred at the connection between the cylinder valve and the cylinder shoulder. It is worth noting that during the leak detection process when the gas cylinder is filled with high-pressure gas, the main focus is on whether a leak has occurred at the cylinder valve and at the connection between the cylinder valve and the cylinder shoulder.

[0044] The drive assembly includes a first turntable 11, a second turntable 12, and a motor. The first turntable 11 carries the gas cylinder and drives it to rotate, while the second turntable 12 carries the detection component 40 and drives it to rotate. The first turntable 11 and the second turntable 12 are coaxially connected. A connecting shaft is provided at the axis between the first turntable 11 and the second turntable 12 for synchronous rotation. Both the first turntable 11 and the second turntable 12 are provided with weight-reducing holes 16 to reduce the load on the motor. The first turntable 11 is driveably connected to the motor. The height between the first turntable 11 and the second turntable 12 is matched to the height of the gas cylinder.

[0045] The guiding assembly includes an inner guide ring 21 and an outer guide ring 22. The inner guide ring 21 and the outer guide ring 22 are positioned above the first turntable 11. The inner guide ring 21, the outer guide ring 22, and the first turntable 11 cooperate to form a transport channel 14. The transport channel 14 is used for moving the gas cylinder. Multiple first drive rollers 211 are rotatably mounted on the side of the inner guide ring 21 near the transport channel 14. Multiple second drive rollers 221 are rotatably mounted on the side of the outer guide ring 22 near the transport channel 14. The spacing between the first drive rollers 211 and the second drive rollers 221 is matched to the outer diameter of the gas cylinder.

[0046] The device also includes a transmission assembly. The transmission assembly can drive the first drive roller 211 and the second drive roller 221 to rotate in the same direction. Thus, when the gas cylinder moves within the transport channel 14, the first drive roller 211 and the second drive roller 221 can drive the gas cylinder to rotate.

[0047] The transmission assembly includes a first drive ring 151. A first annular groove 212 is formed on the circumference of the inner guide ring 21. A first drive roller 211 is provided with a first rotating shaft 2 near the first annular groove 212. One end of the first rotating shaft 2 is connected to the first drive roller 211, and the other end is disposed in the first annular groove 212. The end of the first rotating shaft 2 located in the first annular groove 212 is connected to a first transmission gear 214. The first drive ring 151 is rotatably connected to the first annular groove 212, and the inner wall of the first drive ring 151 is provided with teeth that mesh with the first transmission gear 214. Thus, when the first drive ring 151 rotates relative to the first annular groove 212, it can drive the first drive roller 211 to rotate.

[0048] The principle by which the second drive ring 152 drives the second drive roller 221 is the same as that of the first drive ring 151. Specifically, the transmission assembly also includes the second drive ring 152. A second annular groove 222 is formed on the inner wall of the guide outer ring 22. A second rotating shaft 223 is provided on the side of the second drive roller 221 near the second annular groove 222. One end of the second rotating shaft 223 is connected to the second drive roller 221, and the other end is located in the second annular groove 222. The end of the second rotating shaft 223 located in the second annular groove 222 is connected to a second transmission gear 224. The second drive ring 152 is rotatably connected to the second annular groove 222. Teeth meshing with the second transmission gear 224 are provided on the periphery of the second drive ring 152. Thus, when the second drive ring 152 rotates relative to the second annular groove 222, it can drive the second drive roller 221 to rotate.

[0049] When the first drive roller 211 and the second drive roller 221 rotate, they can drive the gas cylinder located between the first drive roller 211 and the second drive roller 221 to rotate, which facilitates the detection component 40 to detect whether the gas cylinder is leaking.

[0050] The first turntable 11 contains a turntable base 111 and a turntable 112. The turntable 112 is fixedly mounted on the turntable base 111. The turntable 112 is embedded within the transport channel 14. The turntable 112 is used to drive the first drive ring 151 and the second drive ring 152 to rotate. Specifically, the turntable 112 can be fixedly connected to the first drive ring 151 and the second drive ring 152. Alternatively, it can be detachably connected to the first drive ring 151 and the second drive ring 152 via a key or other structure.

[0051] The automated gas cylinder leak detection device also includes a limiting component. The limiting component includes an inner limiting ring 41 and an outer limiting ring 42. The inner limiting ring 41 is fixedly connected to a guide inner ring 21. The outer limiting ring 42 is fixedly connected to a guide outer ring 22. The inner limiting ring 41 and the outer limiting ring 42 are respectively matched to the guide inner ring 21 and the guide outer ring 22. The height of the outer limiting ring 42 and the inner limiting ring 41 is no higher than the second turntable 12. The inner limiting ring 41 and the outer limiting ring 42 can cooperate with the guiding component to guide the movement direction of the gas cylinder, preventing the gas cylinder from tipping over due to its height. A rotating roller 46 is provided on both the outer limiting ring 42 and the inner limiting ring 41. The rotating roller 46 is rotatably connected to the inner limiting ring 41 or the outer limiting ring 42. The rotating roller 46 is used to prevent the gas cylinder body from being scratched by the outer limiting ring 42 or the inner limiting ring 41 during movement.

[0052] The detection component in this application is an infrared imaging device. The infrared imaging device is an infrared thermal imaging detector. Thermal imaging uses an imager composed of special sensors to "see" the energy released by an object. Because the wavelengths of heat energy or infrared light are too long to detect, they are invisible to the human eye. What the human body perceives as heat energy is actually part of the electromagnetic spectrum. Infrared radiation helps the human body see objects invisible to the naked eye. The thermal imager generates images formed by invisible infrared or thermal radiation. Based on the temperature difference between different objects, thermal imaging technology can generate clear images. According to thermodynamic principles, any object with a temperature above absolute zero continuously radiates energy outward in the form of electromagnetic waves. Infrared light waves with wavelengths between 0.76 and 1000 μm have a strong temperature effect, and their radiation intensity conforms to the Stefan-Boltzmann law. If the surface temperatures of the defective and non-defective parts of the object being measured are different, their corresponding infrared radiation intensities are also different. When an infrared thermal imager receives this thermal radiation, it can form thermal image spectra corresponding to the defective and non-defective parts. By analyzing thermal images, defects in the tested object can be identified. For cryogenic insulated containers, this method can be used to detect cold bridges, reduced vacuum, leaks, and shell deformation. This is an excellent tool for predictive maintenance, building inspections, research and development, and automation applications. When high-pressure gas from a cylinder exits through a leak, the temperature at the leak point changes compared to the cylinder body, creating a temperature difference. The detection component can collect temperature data at the leak point and the cylinder body to determine if a leak has occurred. Alternatively, the detection component can detect the gas exiting the cylinder to determine if a leak has occurred.

[0053] Both the outer restricting ring 42 and the outer guiding ring 22 are equipped with inlet ports 43 and outlet ports 44 to facilitate the entry of gas cylinders into the transport channel 14. Guide vanes 45 are provided at the outlet ports 44 of the outer guiding ring 22 and the outer restricting ring 42.

[0054] It is worth noting that a cover is provided on the outer ring 42. The cover serves as a background for the detection component 40. As the gas cylinder moves within the transport channel 14, it can move relative to the cover, increasing the contrast of the gas image generated when a leak occurs at the cylinder valve or shoulder. This allows the detection component to acquire images of the leaking gas more accurately.

[0055] The device also includes a support frame. The support frame is used to support the motor, guide components, and restraint components.

[0056] Example 2

[0057] Unlike the outer guide ring 22 in Embodiment 1, which is used to assist the inner guide ring 21 in driving the rotation of the gas cylinder, this embodiment provides a deformable outer guide ring 22 to adapt to the detection of gas cylinders of different diameters. In this case, the outer guide ring 22 is a driven member and can deform under the push of the gas cylinder.

[0058] Specifically, such as Figure 5-6 In this embodiment, the guide outer ring 22 and the second drive roller 221 on the guide outer ring 22 are not provided. Instead, a support assembly with a slidable resettable structure is used to support the gas cylinder. The support assembly includes an annular structure formed by a plurality of X-shaped supports 51 hinged in sequence. The openings at the inlet 43 and outlet 44 are not shown in the figure. In actual use, openings are required to allow the gas cylinder to enter and exit. The absence of openings here is only for ease of understanding. The four corners of the X-shaped support 51 are respectively hinged to the adjacent X-shaped support. The two sides of the X-shaped support 51 are hinged at the middle. A hinge shaft 52 is provided at the middle of the X-shaped support 51. An opening 53 is provided on the X-shaped support 51 to expose the hinge shaft 52. A sleeve 54 is fitted on the hinge shaft 52 corresponding to the opening 53. A connecting shaft 55 is provided at the bottom of the sleeve 54. One end of the connecting shaft 55 is fixed to the sleeve 54, and the other end is slidably connected to the mounting base 56. The mounting base 56 can slide radially along the turntable base 111. A compression spring is provided at one end of the connecting shaft 55 connected to the mounting base 56. The compression spring is used to reset the connecting shaft 55. An auxiliary ring is provided on the turntable base 111. The auxiliary ring is located on the side of the X-shaped bracket 51 away from the transport channel 14. A protrusion 58 is provided on the side of the X-shaped bracket 51 near the transport channel 14. The protrusion 58 is used to prevent the X-shaped bracket 51 from scratching the gas cylinder. The hinge shaft 52 extends out of the X-shaped bracket 51 near the auxiliary ring. An arc-shaped convex surface 59 is provided at the end of the hinge shaft 52 near the auxiliary ring. When the gas cylinder moves on the transport channel 14, the gas cylinder pushes the X-shaped bracket 51 outward. At this time, the X-shaped bracket 51 extends along its length to increase the distance between it and the inner guide ring 21 to allow the gas cylinder to move. In this way, gas cylinders of different sizes can pass through. The structure of the limiting outer ring 42 can be adjusted with reference to the X-shaped bracket. After the gas cylinder passes, the compression spring can push the connecting shaft 55 out and reset it.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A gas cylinder leakage detection device for a production line, characterized in that, The device includes a drive assembly, a guide assembly, and a detection assembly (40). The drive assembly includes a first turntable (11), a second turntable (12), and a motor. The first turntable (11) and the second turntable (12) are coaxially connected, and the motor is driven to the first turntable (11). The detection assembly (40) is disposed on the second turntable (12). The guide assembly includes an inner guide ring (21) and an outer guide ring (22). The inner guide ring (21) and the outer guide ring (22) are disposed on the first turntable (11), and the inner guide ring (21) and the outer guide ring (22) are matched. The first turntable (11) forms a transport channel (14). The inner guide ring (21) is rotatably provided with multiple first drive rollers (211) on the side near the transport channel (14). The outer guide ring (22) is rotatably provided with multiple second drive rollers (221) on the side near the transport channel (14). The distance between the first drive rollers (211) and the second drive rollers (221) is matched with the outer diameter of the gas cylinder. The device also includes a transmission assembly, which can drive the first drive rollers (211) and the second drive rollers (221) to rotate in the same direction. The transmission assembly includes a first drive ring (151), and a first annular groove (212) is provided on the circumference of the guide inner ring (21). A first rotating shaft (2) is provided on the side of the first drive roller (211) near the first annular groove (212). One end of the first rotating shaft (2) is connected to the first drive roller (211), and the other end is located in the first annular groove (212). The end of the first rotating shaft (2) located in the first annular groove (212) is connected to a first transmission gear (214). The first drive ring (151) is rotatably connected to the first annular groove (212). The inner wall of the first drive ring (151) is provided with teeth that mesh with the first transmission gear (214).

2. The gas cylinder leakage detection device for a production line according to claim 1, characterized in that, The transmission assembly further includes a second drive ring (152). A second annular groove (222) is provided on the inner wall of the guide outer ring (22). A second rotating shaft (223) is provided on the side of the second drive roller (221) near the second annular groove (222). One end of the second rotating shaft (223) is connected to the second drive roller (221), and the other end is located in the second annular groove (222). A second transmission gear (224) is connected to one end of the second rotating shaft (223) located in the second annular groove (222). The second drive ring (152) is rotatably connected to the second annular groove (222). Teeth that mesh with the second transmission gear (224) are provided on the periphery of the second drive ring (152).

3. The gas cylinder leakage detection device for a production line according to claim 2, characterized in that, The first turntable (11) includes a turntable base (111) and a turntable (112). The turntable (112) is fixed on the turntable base (111) and embedded in the transport channel (14). The turntable (112) can drive the first drive ring (151) and the second drive ring (152) to rotate.

4. The gas cylinder leakage detection device for a production line according to claim 1, characterized in that, It also includes a limiting component, which includes a limiting inner ring (41) and a limiting outer ring (42). The limiting inner ring (41) is fixedly connected to the guiding inner ring (21), and the limiting outer ring (42) is fixedly connected to the guiding outer ring (22). The limiting inner ring (41) and the limiting outer ring (42) are respectively matched with the guiding inner ring (21) and the guiding outer ring (22). The height of the limiting outer ring (42) is not higher than that of the second turntable (12).

5. The gas cylinder leakage detection device for a production line according to claim 1, characterized in that, Both the first turntable (11) and the second turntable (12) are provided with weight reduction holes (16).

6. The gas cylinder leakage detection device for a production line according to claim 4, characterized in that, Both the outer limiting ring (42) and the outer guiding ring (22) are provided with an input port (43) and an output port (44), and both the outer guiding ring (22) and the outer limiting ring (42) are provided with a guide plate (45) at the output port (44).

7. The gas cylinder leakage detection device for a production line according to claim 4, characterized in that, Both the inner limiting ring (41) and the outer limiting ring (42) are provided with rotating rollers (46), and the rotating rollers (46) are rotatably connected to the inner limiting ring (41) or the outer limiting ring (42).

8. The gas cylinder leakage detection device for a production line according to claim 4, characterized in that, The device also includes a bracket for supporting the motor, the guide assembly, and the restraint assembly.

9. The gas cylinder leakage detection device for a production line according to claim 1, characterized in that, The first drive roller (211) and the second drive roller (221) are provided with rubber layers on their periphery.

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