Energy storage tube airtight test equipment and test method

Abstract

The application relates to the technical field of pipeline air tightness detection, and discloses a storage energy pipe air tightness test equipment and a test method, which comprise a detection workbench, a preliminary positioning assembly for preliminarily positioning the storage energy pipe is arranged above the detection workbench, and a water immersion air tightness test assembly for air tightness test of the storage energy pipe is arranged above the detection workbench. The application can integrate multiple function modules such as preliminary positioning, air tightness test, outer wall detection, inner wall detection, classification and work station transfer into one, and realize continuous operation through an automatic control system, so that the integration and automation level of the detection process is greatly improved. Through the principle of 'completing the subsequent detection even if the problem is found', the equipment can help the producer to comprehensively understand the specific defect type and position of each unqualified product, and provide valuable data support for analyzing the process deficiency and carrying out unified improvement.

Description

Technical Field

[0001] This invention relates to the field of pipeline airtightness testing technology, specifically to an airtightness testing device and method for energy storage pipes. Background Technology

[0002] Energy storage pipes are key industrial components used to store high-pressure fluids (such as gases and hydraulic oils), and are widely used in automotive suspension systems, industrial hydraulic systems, aerospace, and energy fields. Their core function is to rapidly release stored energy when the system needs it, or to absorb pulses when the system pressure is too high, thus playing a stabilizing and buffering role.

[0003] To overcome the disadvantages of steel energy storage pipes, such as heavy weight and poor toughness, a glass fiber reinforced flexible composite pipe with a gas barrier layer can be used. This composite pipe consists of five layers: an HDPE outer cladding layer, a glass fiber reinforced layer, an HDPE inner core with an adhesive layer, a gas barrier layer, and another HDPE inner core with an adhesive layer. This composite pipe can withstand a high pressure of 4MPa and a maximum temperature of 60℃. It is flexible, easy to install on site, and widely used in oil and gas mixing pipelines, natural gas, hydrogen, and oxygen pipelines.

[0004] When conducting airtightness tests on existing fiberglass reinforced flexible composite pipes with gas barrier layers, the entire pipe is usually tested. This is because the internal pressure of the pipe is relatively high when the entire pipe is sealed and inflated. This testing method has the following problems:

[0005] 1. High risk: Inspection must be carried out after the pipeline is manufactured. If a defective product is found, the entire pipeline is scrapped, resulting in a waste of raw materials.

[0006] 2. During testing, manual handling, positioning, testing, and recording are required between different workstations. The process is fragmented, labor-intensive, and extremely inefficient. At the same time, dry airtightness testing or rough water testing may not be able to detect extremely small leaks, or the results may be greatly affected by subjective judgment.

[0007] 3. Manual visual inspection of the inner and outer walls is prone to oversights due to fatigue, and has a low recognition rate for subtle defects such as "white marks." Inspecting the inner walls is particularly difficult. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides an airtightness testing device and method for energy storage pipes. The main purpose is to solve the problem that traditional testing requires manual handling between different workstations and manual visual inspection of the inner and outer walls, which is prone to oversights due to fatigue.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An airtightness testing device for an energy storage tube includes a testing workbench. Above the testing workbench is a preliminary positioning component for initial positioning of the energy storage tube, a water immersion airtightness testing component for airtightness testing of the energy storage tube, an outer wall testing component for surface testing of the energy storage tube, an inner wall testing component for inner wall testing of the energy storage tube, a post-testing classification component for classifying the tested energy storage tubes on one side of the testing workbench, and a station transfer component for transferring the energy storage tubes between workstations above the testing workbench.

[0011] As a further embodiment of the present invention, the preliminary positioning component includes a first bracket fixedly connected to the top surface of the detection workbench by bolts, a positioning placement plate fixedly connected to the top of the first bracket, the positioning placement plate having a "V" shaped structure, and an energy storage tube placed inside the positioning placement plate.

[0012] As a further embodiment of the present invention, the water immersion air tightness testing assembly includes a water tank disposed above the testing workbench. A bracket is fixedly connected to one side of the water tank, and a guide wheel is rotatably connected to the inside of the bracket via a bearing. A flexible tube is wound around the surface of the guide wheel. A connecting pipe is fixedly connected to the end of the flexible tube facing the water tank, and the end of the flexible tube away from the connecting pipe is connected to an external nitrogen output pump. A positioning platform is fixedly connected to the top of the bracket via bolts. A first cylinder is mounted on the top surface of the positioning platform. A locking block is fixedly connected to the piston rod of the first cylinder. A positioning frame is fixedly connected to the surface of the connecting pipe. The locking block is inserted into the positioning frame and slidably connected to the positioning frame. A positioning ring is slidably connected to the surface of the connecting pipe. Two elastic ropes are symmetrically fixedly connected to the surface of the positioning ring, and the ends of the two elastic ropes away from the positioning ring are fixedly connected to the water tank. A plurality of first image sensors are uniformly fixedly connected along the axis on the top surface of the positioning plate, and the lenses of the first image sensors face the inside of the water tank.

[0013] As a further embodiment of the present invention, the outer wall detection assembly includes two first guide rails symmetrically fixedly connected to the top surface of the detection workbench, and a second bracket is slidably connected to the surface of the first guide rails via a slider. A plurality of second image sensors are uniformly fixedly connected to the top surface of the second bracket along the axis. A second cylinder is installed on the top surface of the detection workbench, and the piston rod of the second cylinder is fixedly connected to the second bracket. A first support platform is provided on one side of the detection workbench. Two second guide rails are symmetrically fixedly connected to the top surface of the first support platform, and a first motor is slidably connected to the top surface of the second guide rails via a slider. A gear is keyed to the output shaft of the first motor. A third cylinder is installed on the top surface of the first support platform, and the piston rod of the third cylinder is fixedly connected to the first motor. The outer wall detection assembly also includes a pipe wall deformation detection device disposed above the detection workbench for overall deformation detection of the energy storage tube.

[0014] As a further embodiment of the present invention, the pipe wall deformation detection device includes two fourth guide rails symmetrically fixedly connected to the top surface of the detection workbench. A third bracket is slidably connected to the top surface of the fourth guide rails via a slider. A bonding roller is rotatably connected to the top of the third bracket via a bearing. The bonding roller is in contact with the energy storage tube. A pointer is fixedly connected to one side of the third bracket. A ruler is fixedly connected to the top surface of the detection workbench. The pointer is slidably connected to the ruler. A spring is sleeved on the surface of the pointer. The two ends of the spring are fixedly connected to the third bracket and the ruler, respectively. A third image sensor is mounted on the surface of the ruler via a bracket. The lens of the third image sensor faces the ruler.

[0015] As a further embodiment of the present invention, two fifth guide rails are symmetrically arranged on one side of the detection worktable, and a linkage table is slidably connected to the top surface of the fifth guide rails via a slider. A second motor is installed on the top surface of the linkage table, and a first lead screw is fixedly connected to the output shaft of the second motor via a coupling. A connecting plate is threadedly connected to the surface of the first lead screw via bolts. An extension rod is fixedly connected to the end of the connecting plate away from the first lead screw. Two fourth image sensors are symmetrically installed on the end of the extension rod away from the second motor. A support rod is fixedly connected to the top surface of the linkage table via a bracket. The support rod is inserted into the extension rod and slidably connected to the extension rod. Two positioning rollers are symmetrically rotatably connected to the top surface of the detection worktable via bearing seats, and a sprocket assembly is installed on one side of one of the positioning rollers. A third motor is installed inside the detection worktable, and the output shaft of the third motor is keyed to the sprocket assembly.

[0016] As a further embodiment of the present invention, two LED lights are symmetrically fixedly connected to the end of the extension rod away from the second motor.

[0017] As a further embodiment of the present invention, the post-detection classification component includes a second support platform installed on the side of the detection workbench away from the fifth guide rail. A fourth cylinder is installed on the top surface of the second support platform, and the piston rod of the fourth cylinder is fixedly connected to a top plate. A fourth motor is installed between the two fifth guide rails, and a lead screw is installed on the output shaft of the fourth motor through a coupling. The linkage platform is threadedly connected to the lead screw through a threaded cylinder. A rotary cylinder is installed on the top surface of the linkage platform, and a limit platform is fixedly connected to the piston end of the rotary cylinder. An energy storage tube placement plate is slidably connected to the top surface of the limit platform through a guide rod. A fifth cylinder is installed on the top surface of the limit platform, and the piston rod of the fifth cylinder is fixedly connected to the energy storage tube placement plate.

[0018] As a further embodiment of the present invention, the workstation transfer assembly includes a fourth bracket disposed above the inspection workbench. A movable stage is slidably connected to the top surface of the fourth bracket via a guide rod. A fifth motor is mounted on the top surface of the fourth bracket. The output shaft of the fifth motor is fixedly connected to a second lead screw via a coupling. The second lead screw is threadedly connected to the movable stage via a threaded cylinder. A plurality of slotted photoelectric switches are fixedly connected to the side of the fourth bracket, with each slotted photoelectric switch corresponding to a specific workstation. The movable stage and the slotted photoelectric switches are located on the same side... A baffle is fixedly connected to the end of the moving platform. A sixth cylinder is installed on the top surface of the moving platform. The piston rod of the sixth cylinder passes through the moving platform and is fixedly connected to a clamping cylinder. A sealing cover is fixedly connected to the bottom end of the two clamping plates of the clamping cylinder. The inner diameter of the sealing cover is the same as the outer diameter of the energy storage tube. A sealing ring is embedded in the inner wall of the sealing cover. A quick-connect air pipe is installed inside the sealing cover on the same side as the connecting pipe. The connecting pipe is inserted inside the sealing cover. A toothed groove is opened on the surface of the sealing cover on the same side as the gear. The gear is inserted inside the toothed groove.

[0019] A method for testing the airtightness of an energy storage pipe includes the following steps:

[0020] S1: Through the precise mechanical structure of the initial positioning component, the energy storage tube can be quickly and stably fixed in the required testing position, preparing for subsequent testing procedures;

[0021] S2: Using the air tightness testing technology of the water immersion air tightness test component, a specific gas is filled into the energy storage tube and the pressure change is monitored to accurately determine whether its air tightness meets the standard.

[0022] S3: With the help of high-definition imaging equipment and intelligent analysis algorithms of the outer wall detection component, the surface of the energy storage tube is comprehensively observed to detect defects such as white marks, bulges, and deformation in a timely manner.

[0023] S4: By inspecting the internal structure of the inner wall of the energy storage tube, we can go deep into the energy storage tube to check for cracks, white marks, or other problems on the inner wall.

[0024] S5: Based on the previous test results, the energy storage tubes are divided into qualified and unqualified products by the post-testing classification component and then transported to different areas respectively;

[0025] S6: The station transfer component uses automated devices to efficiently and accurately transfer the energy storage tube between different stations, improving overall testing efficiency.

[0026] Compared with the prior art, the present invention provides an airtightness testing device and method for energy storage pipes, which has the following advantages:

[0027] 1. This invention integrates multiple functional modules such as preliminary positioning, airtightness testing, outer wall inspection, inner wall inspection, classification, and workstation transfer into one unit, and realizes continuous operation through an automated control system, which greatly improves the integration and automation level of the inspection process.

[0028] 2. This invention employs a water immersion method for airtightness testing, combined with a high-sensitivity image sensor to observe air bubbles, enabling extremely precise identification of minute leaks. Both inner and outer wall inspections utilize high-definition image sensors, combined with intelligent analysis, to effectively identify minute defects such as white marks, bulges, and cracks.

[0029] 3. This invention achieves rapid and accurate transfer of energy storage tubes between different testing stations through a precision station transfer component and slotted photoelectric switch positioning, avoiding manual handling and positioning, significantly shortening the total testing time for a single product, and improving production efficiency.

[0030] 4. This invention, through a pipe wall deformation detection device, can convert the degree of deformation of the energy storage tube into a visual and measurable value, thereby achieving accurate quantitative judgment of product roundness or straightness defects.

[0031] 5. The present invention, through the detection and classification component, can automatically distinguish products into qualified and unqualified products according to preset standards and send them to different areas for easy subsequent processing, while providing a basis for production quality traceability and data statistics.

[0032] 6. The station transfer component of this invention adopts a clamping design with a sealing cover and a sealing ring. During the transfer and testing process, it can not only stably clamp the pipe, but also ensure a reliable seal with the inflation pipeline during the airtightness test, thus ensuring the stability of the test pressure and the accuracy of the results.

[0033] 7. By adhering to the principle of "completing subsequent testing even if problems are found", this invention enables producers to fully understand the specific defect type and location of each non-conforming product, providing valuable data support for analyzing process deficiencies and making unified improvements, thus achieving an improvement from simple testing to process control. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the front side of an energy storage tube airtightness testing device proposed in this invention;

[0035] Figure 2 This is a three-dimensional structural diagram of the rear side of an energy storage tube airtightness testing device proposed in this invention;

[0036] Figure 3 This is a schematic diagram of the elastic rope and positioning ring structure of an energy storage pipe airtightness testing device proposed in this invention;

[0037] Figure 4 This is a schematic diagram of the sealing cover and quick connector structure of an energy storage tube airtightness testing device proposed in this invention;

[0038] Figure 5 This is a schematic diagram of the sealing cover and toothed structure of an energy storage tube airtightness testing device proposed in this invention;

[0039] Figure 6 This is a schematic diagram of the limiting platform and rotary cylinder structure of an energy storage tube airtightness testing device proposed in this invention;

[0040] Figure 7 This is a schematic diagram of the spring and pointer structure of an energy storage tube airtightness testing device proposed in this invention;

[0041] Figure 8 This is a schematic diagram of the first motor and gear structure of an energy storage tube airtightness testing device proposed in this invention;

[0042] Figure 9 This is a schematic diagram of the LED light and the fourth image sensor structure of an energy storage tube airtightness testing device proposed in this invention.

[0043] In the diagram: 1. Inspection workbench;

[0044] 2. Preliminary positioning components; 21. First support; 22. Positioning plate;

[0045] 3. Water immersion air tightness test assembly; 31. Water tank; 32. Connecting pipe; 33. Positioning platform; 34. First cylinder; 35. Locking block; 36. Positioning frame; 37. Hose; 38. Guide wheel; 39. Elastic rope; 310. Positioning ring; 311. First image sensor;

[0046] 4. Outer wall detection assembly; 41. First guide rail; 42. Second bracket; 43. Second image sensor; 44. Second cylinder; 45. First support platform; 46. First motor; 47. Second guide rail; 48. Third cylinder; 49. Gear; 410. Fourth guide rail; 411. Third bracket; 412. Ruler; 413. Third image sensor; 414. Spring; 415. Pointer; 416. Bonding roller;

[0047] 5. Inner wall detection assembly; 51. Fifth guide rail; 52. Second motor; 53. First lead screw; 54. Extension rod; 55. Fourth image sensor; 56. LED light; 57. Connecting plate; 58. Support rod; 59. Positioning roller; 510. Third motor; 511. Sprocket assembly; 512. Linkage table;

[0048] 6. Post-detection sorting component; 61. Second support platform; 62. Fourth cylinder; 63. Top plate; 64. Limiting platform; 65. Energy storage tube placement plate; 66. Rotary cylinder; 67. Fifth cylinder; 68. Fourth motor;

[0049] 7. Workstation transfer assembly; 71. Fourth support; 72. Fifth motor; 73. Second lead screw; 74. Moving table; 75. Sixth cylinder; 76. Clamping cylinder; 77. Sealing cover; 78. Gear groove; 79. Air pipe quick connector; 710. Slotted photoelectric switch. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0051] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] Please see Figures 1-9 As shown, an energy storage tube airtightness testing device includes a testing workbench 1, a preliminary positioning component 2 for preliminary positioning of the energy storage tube above the testing workbench 1, a water immersion airtightness testing component 3 for airtightness testing of the energy storage tube above the testing workbench 1, an outer wall testing component 4 for testing the surface of the energy storage tube above the testing workbench 1, an inner wall testing component 5 for testing the inner wall of the energy storage tube above the testing workbench 1, a post-testing classification component 6 for classifying the tested energy storage tubes on one side of the testing workbench 1, and a station transfer component 7 for transferring the energy storage tubes to a different work position above the testing workbench 1.

[0054] Step 1: By using the precise mechanical structure of component 2 for initial positioning, the energy storage tube can be quickly and stably fixed in the required testing position, preparing for subsequent testing procedures.

[0055] Step 2: Using the air tightness testing technology of the water immersion air tightness testing component 3, a specific gas is filled into the energy storage tube and the pressure change is monitored to accurately determine whether its air tightness meets the standard.

[0056] Step 3: Using the high-definition imaging equipment and intelligent analysis algorithm of the outer wall detection component 4, a comprehensive observation of the surface of the energy storage tube is carried out to promptly detect defects such as white marks, bulges, and deformation.

[0057] Step 4: Use the internal structure of the inner wall detection component 5 to penetrate deep into the energy storage tube and check for problems such as cracks and white marks on the inner wall;

[0058] Step 5: Based on the previous test results, the energy storage tubes are sorted into qualified and unqualified products by the post-testing classification component 6, and then transported to different areas respectively.

[0059] Step 6: The station transfer component 7 uses an automated device to efficiently and accurately transfer the energy storage tube between different stations, improving the overall testing efficiency.

[0060] Step 7: Regardless of which testing procedure detects a problem with the energy storage tube, the subsequent testing procedures need to be completed. This will reveal which parts of the energy storage tube are deficient and can be modified accordingly.

[0061] To solve the technical problem of positioning the energy storage tube before testing, the present invention adopts a preliminary positioning component 2, which includes a first bracket 21 fixedly connected to the top surface of the testing workbench 1 by bolts. The top of the first bracket 21 is fixedly connected to a positioning placement plate 22, which has a "V" shaped structure and the energy storage tube is placed inside the positioning placement plate 22.

[0062] When it is necessary to perform an airtightness test on the energy storage tube, the energy storage tube is first cut to an appropriate length, and then the cut energy storage tube is placed on the top surface of the positioning plate 22. The positioning plate 22 will limit the energy storage tube due to its "V" shaped structure, which facilitates the station transfer component 7 to transfer the energy storage tube to the station, making the results of the airtightness test more accurate.

[0063] To address the technical problem of airtightness testing for energy storage tubes, this invention employs a water immersion airtightness testing assembly 3. This assembly includes a water tank 31 positioned above a testing workbench 1. A support is fixedly connected to one side of the water tank 31, and a guide wheel 38 is rotatably connected to the inside of the support via bearings. A flexible hose 37 is wound around the surface of the guide wheel 38. A connecting pipe 32 is fixedly connected to the end of the hose 37 facing the water tank 31, and the end of the hose 37 away from the connecting pipe 32 is connected to an external nitrogen output pump. A positioning platform 33 is bolted to the top of the support, and a first cylinder 34 is mounted on the top surface of the positioning platform 33. A piston rod of cylinder 34 is fixedly connected to a locking block 35. A positioning frame 36 is fixedly connected to the surface of connecting pipe 32. The locking block 35 is inserted into the interior of positioning frame 36 and is slidably connected to positioning frame 36. A positioning ring 310 is slidably connected to the surface of connecting pipe 32. Two elastic ropes 39 are symmetrically fixedly connected to the surface of positioning ring 310, and the ends of the two elastic ropes 39 away from positioning ring 310 are fixedly connected to water tank 31. Several first image sensors 311 are evenly fixedly connected to the top surface of positioning plate 22 along the axis, and the lenses of the first image sensors 311 face the interior of water tank 31.

[0064] When an airtightness test is required, the energy storage tube is moved above the water tank 31 via the station transfer assembly 7. Then, the energy storage tube is lowered until it is coaxial with the connecting tube 32. At this point, the first cylinder 34 is activated. The piston rod of the first cylinder 34 pushes the positioning frame 36 via the locking block 35, causing the connecting tube 32 to slide inside the positioning ring 310 until it is inserted into the energy storage tube via the station transfer assembly 7. Then, the energy storage tube is moved further into the water tank 31, and the connecting tube 32 is moved along with it, stretching the elastic rope 39. The hose 37 will slide on the surface of the guide wheel 38, and the positioning frame 36 will move downward and eventually disengage from the locking block 35 until the energy storage tube is fully immersed in the liquid inside the water tank 31. Then, the external nitrogen pump is started, and nitrogen will be injected into the energy storage tube through the hose 37 and the connecting pipe 32 until the specified pressure is reached. At this time, the first image sensor 311 observes whether there are bubbles on the surface of the liquid in the water tank 31. The bubbles are used to determine whether there is any leakage in the energy storage tube after the nitrogen is injected, thereby realizing the airtightness detection of the energy storage tube.

[0065] After the energy storage tube is tested and removed from the inside of the water tank 31, the positioning frame 36 will be placed back on the surface of the card block 35, and the connecting pipe 32 can be pulled out by the first cylinder 34, thereby venting the gas inside the energy storage tube.

[0066] To address the technical problem of inspecting the outer wall of the tested energy storage tube, this invention employs an outer wall inspection assembly 4. This assembly includes two first guide rails 41 symmetrically fixedly connected to the top surface of the inspection workbench 1. A second support 42 is slidably connected to the surface of each first guide rail 41 via a slider. Several second image sensors 43 are uniformly fixedly connected to the top surface of the second support 42 along its axis. A second cylinder 44 is mounted on the top surface of the inspection workbench 1, with its piston rod fixedly connected to the second support 42. A first support platform 45 is provided on one side of the inspection workbench 1. Two second guide rails 47 are symmetrically fixedly connected to the top surface of the first support platform 45. A first motor 46 is slidably connected to the top surface of each second guide rail 47 via a slider. A gear 49 is keyed to the output shaft of the first motor 46. A third cylinder 48 is mounted on the top surface of the first support platform 45, with its piston rod fixedly connected to the first motor 46. The outer wall inspection assembly 4 also includes a tube wall deformation detection device positioned above the inspection workbench 1 for overall deformation detection of the energy storage tube.

[0067] The pipe wall deformation detection device includes two fourth guide rails 410 symmetrically fixedly connected to the top surface of the detection workbench 1. A third support 411 is slidably connected to the top surface of the fourth guide rails 410 via a slider. A bonding roller 416 is rotatably connected to the top of the third support 411 via a bearing. The bonding roller 416 is in contact with the energy storage tube. A pointer 415 is fixedly connected to one side of the third support 411. A ruler plate 412 is fixedly connected to the top surface of the detection workbench 1. The pointer 415 is slidably connected to the ruler plate 412. A spring 414 is sleeved on the surface of the pointer 415. The two ends of the spring 414 are fixedly connected to the third support 411 and the ruler plate 412 respectively. A third image sensor 413 is mounted on the surface of the ruler plate 412 via a bracket. The lens of the third image sensor 413 faces the ruler plate 412.

[0068] After the airtightness of the energy storage tube is tested, the energy storage tube is moved above the outer wall detection component 4 by the station transfer component 7. Then, the energy storage tube is moved downwards to be coaxial with the gear 49. Then, the second cylinder 44 is activated. The piston rod of the second cylinder 44 will cause the second support 42 to move towards the energy storage tube on the surface of the first guide rail 41. The initial position of the second support 42 will not affect the falling of the energy storage tube. When the second support 42 moves towards the energy storage tube, the lens of the second image sensor 43 can observe the surface of the energy storage tube. Then, the third cylinder 48 is activated. The third cylinder 48 will drive the first motor 46 to slide on the surface of the second guide rail 47 until the gear 49 is inserted into the interior of the station transfer component 7. Then, the first motor 46 is activated. The gear 49 will indirectly drive the energy storage tube to rotate. When the energy storage tube rotates, the second image sensor 43 can observe whether there are white stretch marks caused by expansion on the surface of the energy storage tube, and whether there are bulges, thereby realizing the detection of the outer wall of the energy storage tube.

[0069] When the energy storage tube is coaxial with the gear 49, the energy storage tube will be in contact with the bonding roller 416. If the energy storage tube is deformed, the bonding roller 416 will slide on the surface of the fourth guide rail 410 due to the deformation of the energy storage tube when the energy storage tube rotates. The pointer 415 connected to the third bracket 411 will slide inside the ruler plate 412, and the spring 414 will be compressed. The distance that the pointer 415 moves on the surface of the ruler plate 412 can be observed through the third image sensor 413, so that the size of the deformation of the energy storage tube can be accurately observed.

[0070] To address the technical challenge of inspecting the inner wall of the tested energy storage tube, this invention employs a method where two fifth guide rails 51 are symmetrically arranged on one side of the inspection workbench 1. A linkage table 512 is slidably connected to the top surface of each fifth guide rail 51 via a slider. A second motor 52 is mounted on the top surface of the linkage table 512. The output shaft of the second motor 52 is fixedly connected to a first lead screw 53 via a coupling. A connecting plate 57 is threadedly connected to the surface of the first lead screw 53 via bolts. An extension rod 54 is fixedly connected to the end of the connecting plate 57 away from the first lead screw 53. The end of the extension rod 54 away from the second motor 52 is symmetrically... Two fourth image sensors 55 are installed. A support rod 58 is fixedly connected to the top surface of the linkage table 512 via a bracket. The support rod 58 is inserted into the extension rod 54 and slidably connected to the extension rod 54. Two positioning rollers 59 are symmetrically rotated and connected to the top surface of the detection worktable 1 via bearing seats. A sprocket set 511 is installed on one side of one of the positioning rollers 59. A third motor 510 is installed inside the detection worktable 1. The output shaft of the third motor 510 is keyed to the sprocket set 511. Two LED lights 56 are symmetrically fixedly connected to the end of the extension rod 54 away from the second motor 52.

[0071] When it is necessary to inspect the inner wall of the energy storage tube after the test is completed, the energy storage tube is moved between the two positioning rollers 59 by the station transfer component 7, and then the clamping of the energy storage tube is released. At this time, the third motor 510 is started. The third motor 510 will drive one of the positioning rollers 59 to rotate through the sprocket group 511. At this time, the energy storage tube will rotate on the surface of the two positioning rollers 59 due to friction. First, the LED light 56 ​​is turned on to provide illumination. Then, the second motor 52 is started. The first lead screw 53 will rotate and drive the extension rod 54 to move towards the energy storage tube through the connecting plate 57. When the extension rod 54 moves, it will slide on the surface of the support rod 58 until the fourth image sensor 55 is inserted into the inside of the energy storage tube. The LED light 56 ​​will provide supplementary lighting to the inside of the energy storage tube. The operator can then observe whether there are white marks or cracks on the inner wall of the energy storage tube through the fourth image sensor 55, thus realizing the inspection of the inner wall of the energy storage tube.

[0072] To address the technical problem of classifying and placing qualified and unqualified energy storage tubes after testing, this invention employs a post-testing classification component 6, which includes a second support platform 61 installed on the side of the testing workbench 1 away from the fifth guide rail 51. A fourth cylinder 62 is mounted on the top surface of the second support platform 61, and the piston rod of the fourth cylinder 62 is fixedly connected to a top plate 63. A fourth motor 68 is installed between the two fifth guide rails 51, and a lead screw is mounted on the output shaft of the fourth motor 68 via a coupling. A linkage platform 512 is threadedly connected to the lead screw via a threaded cylinder. A rotary cylinder 66 is mounted on the top surface of the linkage platform 512, and a limit platform 64 is fixedly connected to the piston end of the rotary cylinder 66. An energy storage tube placement plate 65 is slidably connected to the top surface of the limit platform 64 via a guide rod. A fifth cylinder 67 is mounted on the top surface of the limit platform 64, and the piston rod of the fifth cylinder 67 is fixedly connected to the energy storage tube placement plate 65.

[0073] After the airtightness test and subsequent inspection of the energy storage tube are completed, the fourth motor 68 is started. The lead screw drives the linkage table 512 to move through the threaded cylinder until the energy storage tube placement plate 65 is coaxial with the energy storage tube. Then, the fourth cylinder 62 is started. The piston rod of the fourth cylinder 62 drives the top plate 63 to apply force to the energy storage tube, thereby pushing the energy storage tube into the interior of the energy storage tube placement plate 65. Then, the rotary cylinder 66 is started, which causes the energy storage tube placement plate 65 to rotate. When the energy storage tube placement plate 65 rotates counterclockwise, it means that it is unqualified. When the energy storage tube placement plate 65 rotates clockwise, it means that it is qualified. The qualification of the energy storage tube can be clearly determined by the opposite rotation angle. Because the energy storage tube placement plate 65 itself has an inclined angle, the energy storage tube falling into the energy storage tube placement plate 65 will slowly slide down due to gravity.

[0074] To address the technical challenge of transferring energy storage tubes between different workstations, this invention employs a workstation transfer assembly 7. This assembly includes a fourth support 71 positioned above the testing workbench 1. A movable stage 74 is slidably connected to the top surface of the fourth support 71 via a guide rod. A fifth motor 72 is mounted on the top surface of the fourth support 71. The output shaft of the fifth motor 72 is fixedly connected to a second lead screw 73 via a coupling. The second lead screw 73 is threadedly connected to the movable stage 74 via a threaded cylinder. Several slotted photoelectric switches 710 are fixedly connected to the side of the fourth support 71, with each slotted photoelectric switch 710 corresponding to a specific workstation. The movable stage 74 and the slotted photoelectric switch... A baffle is fixedly connected to one end of the joint 710 on the same side. A sixth cylinder 75 is installed on the top surface of the moving platform 74. The push rod of the sixth cylinder 75 passes through the moving platform 74 and is fixedly connected to a clamping cylinder 76. A sealing cover 77 is fixedly connected to the bottom end of the two clamping plates of the clamping cylinder 76. The inner diameter of the sealing cover 77 is the same as the outer diameter of the energy storage tube. A sealing ring is embedded in the inner wall of the sealing cover 77. A quick-connect pipe connector 79 is installed inside the sealing cover 77 on the same side as the connecting pipe 32. The connecting pipe 32 is inserted into the sealing cover 77. A toothed groove 78 is opened on the surface of the sealing cover 77 on the same side as the gear 49. The gear 49 is inserted into the toothed groove 78.

[0075] When the energy storage tube needs to be moved to a different position, the fifth motor 72 is started first. The second lead screw 73 rotates, driving the moving table 74 to slide on the guide rod surface via the threaded cylinder. When the clamping cylinder 76 is directly above the preliminary positioning component 2, the corresponding slotted photoelectric switch 710 of the preliminary positioning component 2 will stop the fifth motor 72, allowing the moving table 74 to stop precisely. Then, the sixth cylinder 75 is started, and the piston rod of the sixth cylinder 75 will drive the clamping cylinder 76 to move towards the preliminary positioning component 2 until both are in position. The two sealing covers 77 are coaxial with both ends of the energy storage tube. Then, the clamping cylinder 76 is activated, and the two sealing covers 77 move closer to both ends of the energy storage tube until they cover both ends, thus clamping the energy storage tube. Then, the sixth cylinder 75 lifts the energy storage tube, and the fifth motor 72 moves the energy storage tube toward the water immersion airtightness test assembly 3. The slotted photoelectric switch 710 corresponding to the water immersion airtightness test assembly 3 will make the energy storage tube stop precisely above the water tank 31. Then, the sixth cylinder 75 moves the energy storage tube back to the water tank 31. The energy storage tube is moved towards the water tank 31 until the quick-connect fitting 79 and the connecting pipe 32 are coaxial. Then, the connecting pipe 32 is inserted into the quick-connect fitting 79 to seal the energy storage tube. The energy storage tube is then lowered again until it is submerged in the water tank 31, thus transferring the energy storage tube to the work station. After the airtightness test of the energy storage tube is completed, the sixth cylinder 75 lifts the energy storage tube, and the fifth motor 72 moves the energy storage tube to directly above the outer wall detection component 4. Finally, the sixth cylinder 75 lowers the energy storage tube. The tube is lowered until the toothed groove 78 and the gear 49 are coaxial. Then, the gear 49 is inserted into the inside of the toothed groove 78, thereby limiting the sealing cover 77 through the gear 49, which facilitates the detection of the outer wall of the energy storage tube. After the detection of the outer wall of the energy storage tube is completed, the energy storage tube is lifted by the sixth cylinder 75, and then the energy storage tube is moved above the inner wall detection component 5 by the fifth motor 72. After the energy storage tube is placed between the positioning rollers 59, the clamping cylinder 76 releases the clamping of the energy storage tube, thus realizing the final transfer of the energy storage tube.

[0076] It should be noted that in this application, the image sensor is a CCD camera, which is a digital camera that uses a charge-coupled device (CCD) as an image sensor. Therefore, the CCD camera converts the optical scene into a digital image signal and outputs a raw pixel matrix, which is then combined with subsequent software algorithms to achieve image recognition.

[0077] The airtightness testing equipment for this energy storage tube is used in the following steps:

[0078] S1: When it is necessary to perform an airtightness test on the energy storage tube, first cut the energy storage tube to an appropriate length, and then place the cut energy storage tube on the top surface of the positioning plate 22. The positioning plate 22 will limit the energy storage tube due to the "V" shaped structure, which facilitates the station transfer component 7 to transfer the energy storage tube to the station, making the results of the airtightness test more accurate.

[0079] S2: When an airtightness test is required, the energy storage tube is moved above the water tank 31 via the station transfer assembly 7. Then, the energy storage tube is lowered until it is coaxial with the connecting tube 32. At this point, the first cylinder 34 is activated. The piston rod of the first cylinder 34 pushes the positioning frame 36 via the locking block 35, causing the connecting tube 32 to slide inside the positioning ring 310 until it is inserted into the energy storage tube via the station transfer assembly 7. Then, the energy storage tube is moved further into the water tank 31, and the connecting tube 32 is moved along with it. The elastic rope 39 is then... When stretched, the hose 37 slides on the surface of the guide wheel 38, and the positioning frame 36 moves downward and eventually disengages from the locking block 35 until the energy storage tube is fully immersed in the liquid inside the water tank 31. Then, the external nitrogen pump is started, and nitrogen is injected into the energy storage tube through the hose 37 and the connecting pipe 32 until the specified pressure is reached. At this time, the first image sensor 311 observes whether there are bubbles on the surface of the liquid in the water tank 31. The bubbles are used to determine whether there is any leakage in the energy storage tube after the nitrogen is injected, thereby realizing the airtightness detection of the energy storage tube.

[0080] S3: After the airtightness of the energy storage tube is tested, the energy storage tube is moved above the outer wall detection component 4 by the station transfer component 7, and then the energy storage tube is moved down to be coaxial with the gear 49. Then the second cylinder 44 is started. The piston rod of the second cylinder 44 will cause the second support 42 to move towards the energy storage tube on the surface of the first guide rail 41, so that the initial position of the second support 42 will not affect the falling of the energy storage tube. When the second support 42 moves towards the energy storage tube, the lens of the second image sensor 43 can observe the surface of the energy storage tube. Then the third cylinder 48 is started. The third cylinder 48 will drive the first motor 46 to slide on the surface of the second guide rail 47 until the gear 49 is inserted into the interior of the station transfer component 7. Then the first motor 46 is started. The gear 49 will indirectly drive the energy storage tube to rotate. When the energy storage tube rotates, the second image sensor 43 can observe whether there are white stretch marks caused by expansion on the surface of the energy storage tube, and whether there are bulges, thereby realizing the detection of the outer wall of the energy storage tube.

[0081] S4: When the energy storage tube is coaxial with the gear 49, the energy storage tube will be in contact with the bonding roller 416. If the energy storage tube is deformed, the bonding roller 416 will slide on the surface of the fourth guide rail 410 due to the deformation of the energy storage tube when the energy storage tube rotates. The pointer 415 connected to the third bracket 411 will slide inside the ruler plate 412, and the spring 414 will be compressed. The distance that the pointer 415 moves on the surface of the ruler plate 412 can be observed through the third image sensor 413, so that the size of the deformation of the energy storage tube can be accurately observed.

[0082] S5: When it is necessary to inspect the inner wall of the energy storage tube after the test is completed, the energy storage tube is moved between the two positioning rollers 59 through the station transfer component 7, and then the clamping of the energy storage tube is released. At this time, the third motor 510 is started. The third motor 510 will drive one of the positioning rollers 59 to rotate through the sprocket group 511. At this time, the energy storage tube will rotate on the surface of the two positioning rollers 59 due to friction. First, the LED light 56 ​​is started to illuminate the tube. Then, the second motor 52 is started. The first lead screw 53 will rotate and drive the extension rod 54 to move towards the energy storage tube through the connecting plate 57. When the extension rod 54 moves, it will slide on the surface of the support rod 58 until the fourth image sensor 55 is inserted into the inside of the energy storage tube. The LED light 56 ​​will illuminate the inside of the energy storage tube. The operator can then observe whether there are white marks or cracks on the inner wall of the energy storage tube through the fourth image sensor 55, thus realizing the inspection of the inner wall of the energy storage tube.

[0083] S6: After the airtightness test and subsequent inspection of the energy storage tube are completed, the fourth motor 68 is started. The lead screw will drive the linkage table 512 to move through the threaded cylinder until the energy storage tube placement plate 65 is coaxial with the energy storage tube. Then the fourth cylinder 62 is started. The piston rod of the fourth cylinder 62 will drive the top plate 63 to apply force to the energy storage tube, thereby pushing the energy storage tube into the inside of the energy storage tube placement plate 65. Then the rotary cylinder 66 is started. The rotary cylinder 66 will make the energy storage tube placement plate 65 rotate. When the energy storage tube placement plate 65 rotates counterclockwise, it means that it is unqualified. When the energy storage tube placement plate 65 rotates clockwise, it means that it is qualified. The unqualified status of the energy storage tube can be clearly determined by the opposite rotation angle. Because the energy storage tube placement plate 65 itself has an inclined angle, the energy storage tube falling into the energy storage tube placement plate 65 will slowly slide down due to gravity.

[0084] S7: When the energy storage tube needs to be moved to a different position, the fifth motor 72 is started first. The second lead screw 73 rotates, driving the moving table 74 to slide on the guide rod surface via the threaded cylinder. When the clamping cylinder 76 is directly above the preliminary positioning component 2, the corresponding slotted photoelectric switch 710 of the preliminary positioning component 2 will stop the fifth motor 72, allowing the moving table 74 to stop precisely. Then, the sixth cylinder 75 is started. The piston rod of the sixth cylinder 75 will drive the clamping cylinder 76 to move towards the preliminary positioning component 2. The two sealing covers 77 are aligned coaxially with both ends of the energy storage tube. Then, the clamping cylinder 76 is activated, and the two sealing covers 77 move closer to both ends of the energy storage tube until they cover both ends, thus clamping the energy storage tube. Then, the sixth cylinder 75 lifts the energy storage tube, and the fifth motor 72 moves the energy storage tube toward the water immersion airtightness test assembly 3. The slotted photoelectric switch 710 corresponding to the water immersion airtightness test assembly 3 will precisely stop the energy storage tube above the water tank 31. Then, the sixth cylinder 75... The energy storage tube is moved towards the water tank 31 until the quick-connect fitting 79 and the connecting tube 32 are coaxial. The connecting tube 32 is then inserted into the quick-connect fitting 79 to seal the energy storage tube. The energy storage tube is then lowered again until it is submerged in the water tank 31, thus transferring it to a new work position. After the airtightness test is completed, the energy storage tube is lifted by the sixth cylinder 75 and moved to directly above the outer wall detection component 4 by the fifth motor 72. Finally, the energy storage tube is lowered by the sixth cylinder 75. The tube is lowered until the toothed groove 78 and the gear 49 are coaxial. Then, the gear 49 is inserted into the inside of the toothed groove 78, thereby limiting the sealing cover 77 through the gear 49, which facilitates the detection of the outer wall of the energy storage tube. After the detection of the outer wall of the energy storage tube is completed, the energy storage tube is lifted by the sixth cylinder 75, and then the energy storage tube is moved above the inner wall detection component 5 by the fifth motor 72. After the energy storage tube is placed between the positioning rollers 59, the clamping cylinder 76 releases the clamping of the energy storage tube, thus realizing the final transfer of the energy storage tube.

[0085] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0086] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An energy storage tube airtightness testing apparatus comprising a test bench (1), characterized in that, The upper side of the detection workbench (1) is provided with a preliminary positioning assembly (2) for preliminarily positioning the energy storage tube, the upper side of the detection workbench (1) is provided with a water immersion air tightness test assembly (3) for air tightness test of the energy storage tube, the upper side of the detection workbench (1) is provided with an outer wall detection assembly (4) for detecting the surface of the energy storage tube, the upper side of the detection workbench (1) is provided with an inner wall detection assembly (5) for detecting the inner wall of the energy storage tube, one side of the detection workbench (1) is provided with a post-detection classification assembly (6) for classifying the post-detection energy storage tube, and the upper side of the detection workbench (1) is provided with a station transfer assembly (7) for transferring the energy storage tube. The water immersion air tightness test assembly (3) comprises a water tank (31) arranged above the detection workbench (1), a support fixedly connected to one side of the water tank (31), a guide wheel (38) rotatably connected to the inside of the support through a bearing, a soft tube (37) wound around the surface of the guide wheel (38), a connecting pipe (32) fixedly connected to one end of the soft tube (37) facing the water tank (31), one end of the soft tube (37) away from the connecting pipe (32) connected to an external nitrogen output pump, a positioning table (33) fixedly connected to the top end of the support through bolts, a first cylinder (34) mounted on the top surface of the positioning table (33), a clamping block (35) fixedly connected to the piston rod of the first cylinder (34), a positioning frame (36) fixedly connected to the surface of the connecting pipe (32), the clamping block (35) inserted into the inside of the positioning frame (36) and slidably connected with the positioning frame (36), a positioning ring (310) slidably connected to the surface of the connecting pipe (32), two elastic ropes (39) fixedly connected to the surface of the positioning ring (310) in a symmetrical manner, and one end of the two elastic ropes (39) away from the positioning ring (310) fixedly connected to the water tank (31).

2. An energy tube air tightness testing apparatus according to claim 1, wherein, The preliminary positioning assembly (2) comprises a first support (21) fixedly connected to the top surface of the detection workbench (1) by bolts, a positioning placement plate (22) fixedly connected to the top end of the first support (21), the positioning placement plate (22) being of "V" type structure, and the energy storage tube being placed in the inside of the positioning placement plate (22).

3. An energy storage tube hermetic test apparatus as defined in claim 2, wherein, The top surface of the positioning placement plate (22) is uniformly fixedly connected with a plurality of first image sensors (311) along an axis, and the lens of the first image sensor (311) faces the inside of the water tank (31).

4. An energy storage tube hermetic test apparatus as defined in claim 3, wherein, The outer wall detection assembly (4) comprises two first guide rails (41) fixedly connected on the top surface of the detection workbench (1) in a symmetrical manner, the surface of the first guide rail (41) is slidably connected with a second support (42) through a sliding block, the top surface of the second support (42) is uniformly fixedly connected with a plurality of second image sensors (43) along an axis, the top surface of the detection workbench (1) is provided with a second cylinder (44), the piston rod of the second cylinder (44) is fixedly connected with the second support (42), one side of the detection workbench (1) is provided with a first support table (45), the top surface of the first support table (45) is fixedly connected with two second guide rails (47) in a symmetrical manner, and the top surface of the second guide rail (47) is slidably connected with a first motor (46) through a sliding block, the output shaft of the first motor (46) is key-connected with a gear (49), the top surface of the first support table (45) is provided with a third cylinder (48), the piston rod of the third cylinder (48) is fixedly connected with the first motor (46), and the outer wall detection assembly (4) further comprises a pipe wall deformation detection device arranged above the detection workbench (1) to detect the overall deformation of the energy storage pipe.

5. An energy tube air tightness testing apparatus according to claim 4, wherein, The pipe wall deformation detection device comprises two fourth guide rails (410) fixedly connected on the top surface of the detection workbench (1) in a symmetrical manner, the top surface of the fourth guide rail (410) is slidably connected with a third support (411) through a sliding block, the top end of the third support (411) is rotatably connected with a lamination roller (416) through a bearing, the lamination roller (416) is in close contact with the energy storage pipe, one side of the third support (411) is fixedly connected with a pointer (415), the top surface of the detection workbench (1) is fixedly connected with a scale plate (412), the pointer (415) is slidably connected with the scale plate (412), the surface of the pointer (415) is sleeved with a spring (414), the two ends of the spring (414) are fixedly connected with the third support (411) and the scale plate (412) respectively, and the surface of the scale plate (412) is provided with a third image sensor (413) through a support, and the lens of the third image sensor (413) faces the scale plate (412).

6. An energy tube air tightness testing apparatus according to claim 1, wherein, The side of the detection workbench (1) is symmetrically provided with two fifth guide rails (51), and the top surface of the fifth guide rail (51) is slidably connected with a linkage table (512) through a sliding block. The top surface of the linkage table (512) is provided with a second motor (52), and the output shaft of the second motor (52) is fixedly connected with a first lead screw (53) through a shaft coupling. The surface of the first lead screw (53) is threadedly connected with a connecting plate (57) through bolts. One end of the connecting plate (57) away from the first lead screw (53) is fixedly connected with an extension rod (54), and the other end of the extension rod (54) away from the second motor (52) is symmetrically provided with two fourth image sensors (55). The top surface of the linkage table (512) is fixedly connected with a supporting rod (58) through a support, the supporting rod (58) is inserted into the inside of the extension rod (54) and is slidably connected with the extension rod (54), and the top surface of the detection workbench (1) is rotatably connected with two positioning rollers (59) through a bearing seat. One side of one of the positioning rollers (59) is provided with a sprocket set (511), and the inside of the detection workbench (1) is provided with a third motor (510). The output shaft of the third motor (510) is keyed connected with the sprocket set (511).

7. An energy storage tube hermetic test apparatus as defined in claim 6, wherein, The end of the extension rod (54) away from the second motor (52) is fixedly connected with two LED lamps (56).

8. An energy tube air tightness testing apparatus according to claim 6, wherein, The detection and classification assembly (6) comprises a second support table (61) installed on the side of the detection workbench (1) away from the fifth guide rail (51). The top surface of the second support table (61) is provided with a fourth cylinder (62), and the piston rod of the fourth cylinder (62) is fixedly connected with a top plate (63). A fourth motor (68) is installed between the two fifth guide rails (51). The output shaft of the fourth motor (68) is provided with a lead screw through a shaft coupling, and the linkage table (512) is threadedly connected with the lead screw through a threaded cylinder. The top surface of the linkage table (512) is provided with a rotary cylinder (66), and the piston end of the rotary cylinder (66) is fixedly connected with a limiting table (64). The top surface of the limiting table (64) is slidably connected with an energy storage tube placing plate (65) through a guide rod. The top surface of the limiting table (64) is provided with a fifth cylinder (67), and the piston rod of the fifth cylinder (67) is fixedly connected with the energy storage tube placing plate (65).

9. An energy tube air tightness testing apparatus according to claim 4, wherein, The work station transfer assembly (7) comprises a fourth support (71) arranged above the detection workbench (1), the top surface of the fourth support (71) is slidably connected with a moving table (74) through a guide rod, the top surface of the fourth support (71) is provided with a fifth motor (72), the output shaft of the fifth motor (72) is fixedly connected with a second lead screw (73) through a shaft coupling, the second lead screw (73) is threadedly connected with the moving table (74) through a threaded sleeve, the side surface of the fourth support (71) is fixedly connected with a plurality of slot photoelectric switches (710), and each slot photoelectric switch (710) corresponds to each work station, one end of the moving table (74) on the same side as the slot photoelectric switch (710) is fixedly connected with a baffle, the top surface of the moving table (74) is provided with a sixth cylinder (75), the piston rod of the sixth cylinder (75) penetrates through the moving table (74) and is fixedly connected with a clamping cylinder (76), the bottom ends of the two clamping plates of the clamping cylinder (76) are fixedly connected with a sealing cover (77), the inner diameter of the sealing cover (77) is the same as the outer diameter of the energy storage tube, a sealing ring is inlaid on the inner wall of the sealing cover (77), a gas pipe quick connector (79) is arranged in the inside of the sealing cover (77) on the same side as the connecting pipe (32), the connecting pipe (32) is inserted into the inside of the sealing cover (77), and a gear slot (78) is arranged in the surface of the sealing cover (77) on the same side as the gear (49), and the gear (49) is inserted into the inside of the gear slot (78).

10. A method of testing the hermeticity of an energy storage tube, suitable for use with an energy storage tube hermeticity testing apparatus as claimed in claim 1, the method comprising: The method comprises the following steps: S1: The accurate mechanical structure of the preliminary positioning assembly (2) can quickly and stably fix the energy storage tube at the required position for testing, preparing for the subsequent detection process; S2: The air tightness detection technology of the water immersion air tightness test assembly (3) is used to fill a specific gas into the energy storage tube and monitor the pressure change, so as to accurately judge whether the air tightness meets the standard; S3: The outer wall detection assembly (4) is used to comprehensively observe the surface of the energy storage tube by using high-definition imaging equipment and intelligent analysis algorithm, so as to timely find the defects such as white marks, bulges and deformation; S4: The internal structure of the inner wall detection assembly (5) is used to deeply enter the inside of the energy storage tube to check whether there are cracks and white marks on the inner wall; S5: According to the detection results of the previous steps, the detection after classification assembly (6) is used to classify the energy storage tube into qualified products and unqualified products, and the energy storage tube is respectively conveyed to different areas; S6: The work station transfer assembly (7) is used to efficiently and accurately transfer the energy storage tube between different work stations, so as to improve the overall detection efficiency.

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