Multifunctional detection device and method for defects of composite gas cylinder

Abstract

The invention discloses a multifunctional composite gas cylinder defect detection device and method, and belongs to the technical field of gas cylinder defect detection.The positioning detection assembly comprises a fixing ring capable of linearly moving on the top of a test base, and a plurality of connecting blocks capable of synchronously moving are arranged in the fixing ring; the side, close to the axis of the fixing ring, of the connecting block is movably connected with a plurality of bearing balls, one side of the fixing ring is rotationally connected with a rotating ring, and the inner side of the rotating ring is symmetrically connected with two machine vision testing devices. According to the invention, through the arrangement of the positioning detection assembly and the cooperation of the driving mechanism, the transmission gear and the transmission gear ring, the composite motion that the rotating ring drives the machine vision testing device to rotate around the axis of the composite gas cylinder and translate along the length direction of the composite gas cylinder is realized, so that multi-angle dead-angle-free double scanning detection is carried out on the outer surface of the composite gas cylinder; the identification rate and the detection comprehensiveness of the appearance defects are improved, and the labor intensity is reduced.

Description

Technical Field

[0001] This invention belongs to the field of gas cylinder defect detection technology, and particularly relates to a multifunctional detection device and method for composite gas cylinder defects. Background Technology

[0002] Composite gas cylinders are modern containers made of composite structural materials for storing high-pressure gases. Their typical structure consists of an inner sealed liner and an outer high-strength fiber-wound reinforcing layer. As pressure vessels, composite gas cylinders require appropriate testing before leaving the factory to ensure safe use.

[0003] Chinese patent document CN222689610U discloses an infrared detection device for defects in composite gas cylinders, including a supporting base plate. Support columns are fixedly connected to the four corners of the lower end of the supporting base plate. A support rod is inserted through the middle of the upper end of the supporting base plate. A support block is fixedly connected to one end of the support rod that passes through the supporting base plate. A support assembly is fixedly connected to the left side of the upper end of the supporting base plate, and a support plate is fixedly connected to the right side of the upper end of the supporting base plate. A detection assembly is sleeved on the upper end of the support assembly and the support plate. A motor is fixedly connected to the middle of the left end of the support plate, and a first-order frame is fixedly connected to the output end of the motor. The detection assembly includes a connecting plate, and an infrared detection plate is fixedly connected to the lower end of the connecting plate.

[0004] However, the above solution has the following drawbacks due to the relatively fixed position of the detection components and the gaps between the infrared detection plates: when detecting the surface of the gas cylinder, blind spots will appear. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of blind spots in the testing of gas cylinder surfaces, and to propose a multifunctional detection device and method for composite gas cylinder defects.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multifunctional detection device for defects in composite gas cylinders includes a test base, a movable groove is provided at the center of the top of the test base, a positioning detection component is provided on the top of the test base, and a drive mechanism for driving the positioning detection component is provided on one side of the test base.

[0008] The positioning and detection component includes a fixed ring that can move linearly on the top of the test base. The fixed ring has multiple connecting blocks that can move synchronously inside. Multiple supporting balls are movably connected to the side of the connecting blocks near the axis of the fixed ring. A rotating ring is rotatably connected to one side of the fixed ring. Two machine vision testing devices are symmetrically connected to the inner side of the rotating ring.

[0009] As a further description of the above technical solution: the positioning detection component also includes:

[0010] The movable lead screw is rotatably connected within the movable slot;

[0011] The lead screw seat is connected to the outer surface of the movable lead screw, and is slidably connected in the movable groove. The lead screw seat is connected to the bottom of the fixed ring.

[0012] As a further description of the above technical solution: the positioning detection component also includes:

[0013] A rotating rod is rotatably connected to a movable groove. A rotating sleeve is slidably connected to the outer surface of the rotating rod. The cross-sectional shape of the inner wall of both the rotating rod and the rotating sleeve is a regular hexagon. The rotating sleeve is rotatably connected to the lead screw seat.

[0014] The transmission gear is connected to the outer surface of the rotating sleeve;

[0015] A transmission gear ring is connected to the outer circumference of the rotating ring, and the transmission gear ring meshes with the transmission gear.

[0016] As a further description of the above technical solution: the positioning detection component also includes:

[0017] Multiple sliders are arranged in a circular array inside the fixed ring. One side of each slider is connected to one end of a connecting block. Multiple grooves are provided inside the fixed ring, and the sliders are slidably connected in the grooves. Multiple through slots are provided on one side of the fixed ring, and stroke rods are slidably connected in the through slots. One end of the stroke rods is connected to one side of the slider.

[0018] An adjusting gear ring is rotatably connected to the side of the fixed ring away from the rotating ring. The adjusting gear ring has multiple stroke grooves arranged in a circular array on one side, and the stroke rod is slidably connected in the stroke groove.

[0019] A drive source is fixedly installed on the top of a fixed ring. The output end of the drive source is connected to a drive gear, which meshes with an adjusting gear ring.

[0020] As a further description of the above technical solution: the driving mechanism includes:

[0021] The drive motor is fixedly mounted on one side of the test base via a mounting bracket.

[0022] The first synchronous pulley is connected to one end of the output shaft of the drive motor, and one end of the movable lead screw extends to the outside of the movable groove and is connected to one side of the first synchronous pulley;

[0023] The second synchronous pulley has one end of the rotating rod extending to the outside of the moving groove and connected to one side of the second synchronous pulley.

[0024] The synchronous belt is connected between the first and second synchronous pulleys.

[0025] As a further description of the above technical solution, it also includes:

[0026] The operating device is connected to the front of the test base;

[0027] Two side supports are symmetrically connected to both sides of the test base;

[0028] The gas injection testing mechanism, located on the back of the testing base, is used to pressurize the composite gas cylinder.

[0029] A limiting component, located on the top of the side bracket, is used to fix and limit the position of the composite gas cylinder;

[0030] The synchronous marking component, located inside the rotating ring, is used in conjunction with the gas injection testing mechanism to mark leaking composite gas cylinders.

[0031] As a further description of the above technical solution: the synchronization tag component includes:

[0032] Two piston boxes are symmetrically arranged inside the rotating ring, and the two piston boxes can move synchronously relative to each other;

[0033] Two sealing covers are connected to one side of the piston box. The sealing covers are divided into rigid parts and flexible parts. Multiple connecting pipes are connected to both sides of the sealing covers. The other end of the connecting pipes is connected to one side of the piston box.

[0034] Two marking stamps, one side of which is connected to a sliding plate, which is slidably connected inside a sealing cover.

[0035] As a further description of the above technical solution: the synchronization tag component also includes:

[0036] Two piston plates are slidably connected to the piston box. Two symmetrically arranged sliding rods are connected to one side of the piston plates. One end of each sliding rod extends to the outside of the piston box and is connected to one side of the sliding plate.

[0037] Two sets of tension springs, each set consisting of two tension springs, are sleeved on the outer surface of the sliding rod, and the two ends of the tension springs are respectively connected to one side of the sliding plate and one side of the piston box;

[0038] Two sets of electric actuators, each set consisting of two electric actuators, with the output end of the electric actuators in the same set connected to the same piston box, and the other end of the electric actuator connected to the inner side of the rotating ring.

[0039] As a further description of the above technical solution: the limiting component includes:

[0040] Two linear modules are symmetrically arranged on both sides of the test base, and the linear modules are connected to the top of the side support;

[0041] Two movable seats are connected to one side of the linear module;

[0042] Two movable rings are connected to the top of the movable base. One side of each movable ring is connected to a plurality of connecting rods arranged in a circular array. The side of each connecting rod away from the movable ring is connected to a bonding block.

[0043] Furthermore, this invention also discloses a multifunctional detection method for defects in composite gas cylinders, specifically including the following steps:

[0044] S1. Move the composite gas cylinder to the test base, adjust the toothed ring to make the supporting balls move synchronously towards the center, complete the positioning of the composite gas cylinder, and align the axis of the composite gas cylinder with the axis of the moving ring to ensure accurate positioning.

[0045] S2. The linear module drives the moving ring to move the bonding block toward the shoulder or bottom of the gas cylinder. The rounded corner design of the bonding block adapts to the curved shape and enhances the stability of the composite gas cylinder.

[0046] S3. The staff connects the gas injection pipe in the gas injection test mechanism to the port of the composite gas cylinder and injects gas into it to pressurize it, thus completing the pressurization test of the composite gas cylinder.

[0047] S4. Start the drive motor so that the fixed ring drives the rotating ring to move linearly along the length of the gas cylinder. At the same time, the rotating ring drives the machine vision testing device to rotate around the axis of the gas cylinder to achieve multi-angle dual appearance inspection.

[0048] S5. During the visual inspection process, the sealing cover moves with the rotating ring and fits against the surface of the composite gas cylinder to form a sealed space. If the gas cylinder leaks, the gas enters the sealing cover and enters the piston box through the connecting pipe. The gas pushes the piston plate and moves the marking stamp, so that the marking stamp leaves a mark at the leak point.

[0049] Compared with existing technologies, the multifunctional detection device and method for defects in composite gas cylinders that adopts the above technical solution has the following beneficial effects:

[0050] 1. In this invention, by setting up a positioning detection component and adjusting the toothed ring to engage the stroke groove, multiple stroke rods and supporting balls can be linked to move synchronously towards the center, thereby quickly and accurately centering the composite gas cylinder on the axis of the fixed ring and the rotating ring, ensuring the stability of subsequent limit fixing and the safety of testing. At the same time, through the cooperation between the drive mechanism, transmission gears and transmission toothed ring, a composite motion is achieved in which the rotating ring drives the machine vision testing device to both rotate around the axis of the composite gas cylinder and translate along its length, thereby performing multi-angle, blind-spot-free dual scanning detection on the outer surface of the composite gas cylinder, improving the recognition rate and detection comprehensiveness of appearance defects, significantly shortening the testing cycle, reducing labor intensity, and through precise automatic positioning and dual motion detection mechanisms, comprehensively ensuring the high accuracy, consistency and efficiency of composite gas cylinder testing in terms of both pressure safety and appearance quality.

[0051] 2. In this invention, by setting a synchronous marking component, the sealing cover dynamically fits the surface of the gas cylinder with the rotating ring to form a local seal during the detection process. Once the leak point is covered, the leaking gas pushes the piston plate to automatically leave a mark on the leak point with the marking stamp. Subsequently, the mechanism automatically resets, realizing the automatic identification and accurate marking of the leak point. The detection and marking are completed synchronously through the mechanical linkage structure, which reduces the complexity of operation and improves the efficiency and accuracy of leak point detection.

[0052] 3. In this invention, by setting a limiting component, two linear modules synchronously drive the moving seat to move towards the gas cylinder, thereby driving multiple bonding blocks on the moving ring and connecting rod to smoothly advance towards the cylinder shoulder or bottom. Through the rounded corner design of the bonding blocks, they can adaptively fit the curved shape of the cylinder shoulder or bottom, enhancing the stability of the composite gas cylinder limiting. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0054] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of the present invention;

[0055] Figure 3 This is a top-view three-dimensional structural diagram of the test base in this invention;

[0056] Figure 4 For the present invention Figure 3 Enlarged structural diagram of section A;

[0057] Figure 5 This is a three-dimensional structural diagram of the positioning detection component and the synchronization marking component in this invention;

[0058] Figure 6 This is a three-dimensional split structure diagram of the positioning detection component and the synchronization marking component in this invention;

[0059] Figure 7 For the present invention Figure 6 Enlarged structural diagram of section B;

[0060] Figure 8 This is a three-dimensional structural diagram of the synchronization marking component in this invention;

[0061] Figure 9 This is a three-dimensional cross-sectional view of the synchronization marking component in this invention.

[0062] Legend:

[0063] 1. Test base; 2. Drive mechanism; 201. Drive motor; 202. First synchronous pulley; 203. Synchronous belt; 204. Second synchronous pulley; 3. Side bracket; 4. Limiting assembly; 401. Linear module; 402. Moving ring; 403. Moving seat; 404. Connecting rod; 405. Adhesive block; 5. Positioning detection assembly; 501. Drive source; 502. Drive gear; 503. Rotating rod; 504. Moving lead screw; 505. Adjusting gear ring; 506. Stroke groove; 507. Stroke rod; 508. Fixing ring; 5 09. Transmission gear ring; 510. Lead screw seat; 511. Rotating sleeve; 512. Transmission gear; 513. Slider; 514. Connecting block; 515. Supporting ball; 516. Rotating ring; 517. Machine vision testing device; 6. Synchronous marking assembly; 601. Electric push rod; 602. Piston box; 603. Connecting pipe; 604. Sealing cover; 605. Marking stamp; 606. Sliding plate; 607. Tension spring; 608. Sliding rod; 609. Piston plate; 7. Air injection testing mechanism; 8. Operating device; 9. Moving groove. Detailed Implementation

[0064] 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.

[0065] Please see Figures 1-9 The present invention provides a technical solution:

[0066] A multifunctional detection device for defects in composite gas cylinders includes a test base 1, a moving groove 9 is provided at the center of the top of the test base 1, a positioning detection component 5 is provided on the top of the test base 1, and a driving mechanism 2 for driving the positioning detection component 5 is provided on one side of the test base 1.

[0067] Also includes:

[0068] Operating device 8 is connected to the front of test base 1;

[0069] Two side supports 3 are symmetrically connected to both sides of the test base 1;

[0070] The gas injection testing mechanism 7 is located on the back of the test base 1 and is used to perform pressure testing on the composite gas cylinder. The gas injection testing mechanism 7 consists of a gas storage tank, an output device and a gas injection pipe.

[0071] Limiting component 4 is located on the top of the side bracket 3 and is used to fix and limit the composite gas cylinder;

[0072] Synchronous marking component 6 is located inside rotating ring 516 and is used to cooperate with gas injection testing mechanism 7 to test and mark leaking composite gas cylinders.

[0073] The positioning and detection component 5 includes a fixed ring 508 that can move linearly on the top of the test base 1. The fixed ring 508 has multiple connecting blocks 514 that can move synchronously inside. Multiple supporting balls 515 are movably connected to the side of the connecting blocks 514 near the axis of the fixed ring 508. A rotating ring 516 is rotatably connected to one side of the fixed ring 508. Two machine vision testing devices 517 are symmetrically connected inside the rotating ring 516. The machine vision testing device 517 consists of a high-definition camera, a light source module and an image recognition module, which can scan the surface of the composite gas cylinder and identify defects such as cracks, pits and coating peeling.

[0074] The positioning detection component 5 also includes:

[0075] The movable lead screw 504 is rotatably connected within the movable groove 9;

[0076] The lead screw seat 510 is connected to the outer surface of the movable lead screw 504. The lead screw seat 510 is slidably connected in the movable groove 9. The lead screw seat 510 is connected to the bottom of the fixed ring 508.

[0077] Rotary rod 503 is rotatably connected to movable groove 9. Rotary sleeve 511 is slidably connected to the outer surface of rotary rod 503. The cross-sectional shape of the inner wall of rotary rod 503 and rotary sleeve 511 is regular hexagonal. Rotary sleeve 511 is rotatably connected to lead screw seat 510.

[0078] The transmission gear 512 is connected to the outer surface of the rotating sleeve 511;

[0079] A transmission gear ring 509 is connected to the outer periphery of the rotating ring 516, and the transmission gear ring 509 meshes with the transmission gear 512.

[0080] Multiple sliders 513 are arranged in a circular array inside the fixed ring 508. One side of the slider 513 is connected to one end of the connecting block 514. Multiple sliding grooves are provided inside the fixed ring 508. The sliders 513 are slidably connected in the sliding grooves. Multiple through grooves are provided on one side of the fixed ring 508. A stroke rod 507 is slidably connected in the through groove. One end of the stroke rod 507 is connected to one side of the slider 513.

[0081] Adjusting gear ring 505 is rotatably connected to the fixed ring 508 on the side opposite to the rotating ring 516. Multiple stroke grooves 506 arranged in a circular array are provided on one side of adjusting gear ring 505. Stroke rod 507 is slidably connected in stroke groove 506. The cross-sectional shape of stroke groove 506 is arc-shaped.

[0082] The drive source 501 is fixedly installed on the top of the fixed ring 508. The output end of the drive source 501 is connected to the drive gear 502, which meshes with the adjusting gear ring 505. The drive source 501 is a servo motor with a self-locking function and is equipped with a corresponding power supply.

[0083] Drive mechanism 2 includes:

[0084] The drive motor 201 is fixedly mounted on one side of the test base 1 via a mounting bracket;

[0085] The first synchronous pulley 202 is connected to one end of the output shaft of the drive motor 201, and one end of the moving screw 504 extends to the outside of the moving groove 9 and is connected to one side of the first synchronous pulley 202.

[0086] The second synchronous pulley 204, one end of the rotating rod 503 extends to the outside of the moving groove 9 and is connected to one side of the second synchronous pulley 204;

[0087] The synchronous belt 203 is connected between the first synchronous pulley 202 and the second synchronous pulley 204.

[0088] The specific usage method and working principle are as follows: The staff uses an external handling device to move the composite gas cylinder to the test base 1, and the cylinder body passes through the rotating ring 516 and the fixed ring 508. Then, the drive source 501 drives the drive gear 502 to rotate, the drive gear 502 drives the adjusting gear ring 505 to rotate, the adjusting gear ring 505 drives the stroke groove 506 to rotate, and the arc design of the stroke groove 506, together with the through groove, drives the stroke rod 507 to move towards the center position of the fixed ring 508. Multiple stroke rods 507 drive multiple connecting blocks 514 to move synchronously towards the center of the fixed ring 508 through the slider 513, and the connecting blocks 514 drive the supporting ball 515 to center the composite gas cylinder, so that the axis of the composite gas cylinder and the axis of the two moving rings 402 are on the same straight line, ensuring the stability and accuracy of the limiting component 4 when limiting and fixing the composite gas cylinder.

[0089] Afterwards, the staff used the limiting component 4 to limit and fix the composite gas cylinder. The staff connected the gas injection pipe in the gas injection test mechanism 7 to the port of the composite gas cylinder and injected gas into it to pressurize it, thus completing the pressurization test of the composite gas cylinder. It can also be used with the synchronous marking component 6 to mark the leaking composite gas cylinder.

[0090] like Figure 1 As shown, during the visual inspection of the composite gas cylinder, the drive motor 201 drives the movable lead screw 504 to rotate. The movable lead screw 504 drives the fixed ring 508 to move from the left end to the right end of the test base 1 through the lead screw seat 510. During this process, the drive motor 201 drives the first synchronous wheel 202 to rotate. The first synchronous wheel 202 drives the second synchronous wheel 204 to rotate through the synchronous belt 203. The second synchronous wheel 204 drives the rotating rod 503 to rotate. The rotating rod 503 drives the rotating sleeve 511 to rotate. The rotating sleeve 511 drives the transmission gear 512 to rotate. The transmission gear 512 drives the transmission gear ring 509 to rotate. The transmission gear ring 509 drives the rotating ring 516 to rotate. The rotating ring 516 drives the two machine vision testing devices 517 to rotate axially around the outer surface of the composite gas cylinder. With the linear motion of the rotating ring 516, multi-angle dual inspection of the composite gas cylinder is achieved.

[0091] Please see Figures 1-2 and Figures 5-9 The synchronization tag component 6 includes:

[0092] Two piston boxes 602 are symmetrically arranged inside the rotating ring 516, and the two piston boxes 602 can move synchronously relative to each other;

[0093] Two sealing covers 604 are connected to one side of the piston box 602. The sealing cover 604 is divided into a rigid part and a flexible part. Multiple connecting pipes 603 are connected to both sides of the sealing cover 604. The other end of the connecting pipe 603 is connected to one side of the piston box 602.

[0094] Two marking stamps 605 are provided. A sliding plate 606 is connected to one side of the marking stamp 605. The sliding plate 606 is slidably connected inside the sealing cover 604. The printing surface of the marking stamp 605 is concave. The marking stamp 605 uses solvent-resistant ink that is compatible with composite gas cylinders. With the concave design of the marking stamp 605, markings can be directly printed on the body of the composite gas cylinder.

[0095] Two piston plates 609 are slidably connected to the piston box 602. Two symmetrically arranged sliding rods 608 are connected to one side of the piston plate 609. One end of the sliding rod 608 extends to the outside of the piston box 602 and is connected to one side of the sliding plate 606.

[0096] Two sets of tension springs 607, each set of tension springs 607 consists of two tension springs 607, the tension springs 607 are sleeved on the outer surface of the sliding rod 608, and the two ends of the tension springs 607 are respectively connected to one side of the sliding plate 606 and one side of the piston box 602.

[0097] Two sets of electric actuators 601, each set of electric actuators 601 consists of two electric actuators 601, and the output end of the electric actuators 601 in the same set is connected to the same piston box 602, and the other end of the electric actuator 601 is connected to the inner side of the rotating ring 516.

[0098] The specific usage method and working principle are as follows: Before the composite gas cylinder is visually inspected, the electric push rod 601 drives the piston box 602 to move towards the composite gas cylinder. The piston box 602 drives the sealing cover 604 to gradually fit against the outer surface of the composite gas cylinder, so that the inside of the sealing cover 604 forms a relatively sealed state.

[0099] As the rotating ring 516 rotates and moves linearly, the sealing cover 604 seals and adheres to all parts of the composite gas cylinder. At this time, the gas injection testing mechanism 7 continuously supplies gas and pressurizes it into the composite gas cylinder. If there is a leak in the composite gas cylinder, when the sealing cover 604 moves to the leak and completely covers the leak, the gas output from the leak will enter the sealing cover 604 and enter the piston box 602 through the connecting pipe 603. The gas that enters will act on the piston plate 609, thereby pushing the piston plate 609 to move towards the sealing cover 604. The piston plate 609 drives the marking stamp 605 to move towards the composite gas cylinder through the sliding rod 608 and the sliding plate 606, and finally leaves a mark at the leak point of the composite gas cylinder. When the sealing cover 604 leaves the leak point, the tension spring 607 drives the sliding plate 606 to reset, so that the marking stamp 605 is reset, which is convenient for the next operation.

[0100] Please see Figures 1-2 The limiting component 4 includes:

[0101] Two linear modules 401 are symmetrically arranged on both sides of the test base 1. The linear modules 401 are connected to the top of the side bracket 3. The linear modules 401 consist of a fixed block and a movable cylinder fixed to the top of the side bracket 3.

[0102] Two movable seats 403 are connected to one side of the linear module 401;

[0103] Two movable rings 402 are connected to the top of the movable base 403. Multiple connecting rods 404 arranged in a circular array are connected to one side of the movable rings 402. A fitting block 405 is connected to the side of the connecting rods 404 away from the movable rings 402. The surface of the fitting block 405 near the axis of the movable rings 402 is rounded to facilitate adaptation to the curved surface of the bottom or shoulder of the composite gas cylinder.

[0104] The specific usage method and working principle are as follows: After the positioning and detection component 5 completes the axial positioning of the composite gas cylinder, the two linear modules 401 drive the moving base 403 to move towards the composite gas cylinder. The moving base 403 drives the moving ring 402 to move towards the shoulder or bottom of the composite gas cylinder. The moving ring 402 drives multiple bonding blocks 405 to move towards the shoulder or bottom of the composite gas cylinder through the connecting rod 404. Due to the rounded corner design of the bonding block 405, the bonding block 405 adapts to the curved surface of the bottom or shoulder of the composite gas cylinder, improving the stability of the fixed positioning of the composite gas cylinder. In addition, the hollow design of the center of the moving ring 402 facilitates the connection between the gas injection test mechanism 7 and the composite gas cylinder.

[0105] Furthermore, this invention also discloses a multifunctional detection method for defects in composite gas cylinders, specifically including the following steps:

[0106] S1. Move the composite gas cylinder to the test base 1, and adjust the toothed ring 505 to make the supporting ball 515 move synchronously towards the center to complete the positioning of the composite gas cylinder, and align the axis of the composite gas cylinder with the axis of the moving ring 402 to ensure accurate positioning.

[0107] S2. The linear module 401 drives the moving ring 402 to move the bonding block 405 towards the shoulder or bottom of the gas cylinder. The rounded corner design of the bonding block 405 adapts to the curved shape and enhances the stability of the composite gas cylinder.

[0108] S3. The staff connects the gas injection pipe in the gas injection test mechanism 7 to the port of the composite gas cylinder and injects gas into it to pressurize it, thus completing the pressurization test of the composite gas cylinder.

[0109] S4. Start the drive motor 201, so that the fixed ring 508 drives the rotating ring 516 to move linearly along the length of the gas cylinder body. At the same time, the rotating ring 516 drives the machine vision testing device 517 to rotate around the gas cylinder axis, so as to realize multi-angle dual appearance inspection.

[0110] S5. During the appearance inspection, the sealing cover 604 moves with the rotating ring 516 and fits against the surface of the composite gas cylinder to form a sealed space. If the gas cylinder leaks, the gas enters the sealing cover 604 and enters the piston box through the connecting pipe 603. The gas pushes the piston plate 609 and drives the marking stamp 605 to move, so that the marking stamp 605 leaves a mark at the leak point.

[0111] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multifunctional detection device for defects in composite gas cylinders, comprising a test base (1), wherein a movable groove (9) is provided at the center of the top of the test base (1), characterized in that, The test base (1) is provided with a positioning detection component (5) on its top, and a driving mechanism (2) for driving the positioning detection component (5) is provided on one side of the test base (1). The positioning detection component (5) includes a fixed ring (508) that can move linearly on the top of the test base (1). The fixed ring (508) has multiple connecting blocks (514) that can move synchronously inside. Multiple supporting balls (515) are movably connected to the side of the connecting block (514) near the axis of the fixed ring (508). A rotating ring (516) is rotatably connected to one side of the fixed ring (508). Two machine vision testing devices (517) are symmetrically connected inside the rotating ring (516).

2. The multifunctional detection device for defects in composite gas cylinders according to claim 1, characterized in that, The positioning detection component (5) also includes: The movable lead screw (504) is rotatably connected to the movable groove (9); The lead screw seat (510) is connected to the outer surface of the movable lead screw (504) and is slidably connected in the movable groove (9). The lead screw seat (510) is connected to the bottom of the fixed ring (508).

3. The multifunctional detection device for defects in composite gas cylinders according to claim 2, characterized in that, The positioning detection component (5) also includes: Rotating rod (503) is rotatably connected in movable groove (9). Rotating sleeve (511) is slidably connected to the outer surface of rotating rod (503). The cross-sectional shape of the inner wall of rotating rod (503) and rotating sleeve (511) is a regular hexagon. Rotating sleeve (511) is rotatably connected to lead screw seat (510). The transmission gear (512) is connected to the outer surface of the rotating sleeve (511); A transmission gear ring (509) is connected to the outer periphery of the rotating ring (516), and the transmission gear ring (509) meshes with the transmission gear (512).

4. The multifunctional detection device for defects in composite gas cylinders according to claim 1, characterized in that, The positioning detection component (5) also includes: Multiple sliders (513) are arranged in a circular array inside the fixed ring (508). One side of each slider (513) is connected to one end of the connecting block (514). Multiple sliding grooves are provided inside the fixed ring (508). The sliders (513) are slidably connected in the sliding grooves. Multiple through slots are provided on one side of the fixed ring (508). A stroke rod (507) is slidably connected in the through slot. One end of the stroke rod (507) is connected to one side of the slider (513). An adjusting gear ring (505) is rotatably connected to the side of the fixed ring (508) away from the rotating ring (516). The adjusting gear ring (505) has multiple stroke grooves (506) arranged in a circular array on one side. The stroke rod (507) is slidably connected in the stroke groove (506). A drive source (501) is fixedly installed on the top of a fixed ring (508). The output end of the drive source (501) is connected to a drive gear (502), which meshes with an adjusting gear ring (505).

5. The multifunctional detection device for defects in composite gas cylinders according to claim 3, characterized in that, The drive mechanism (2) includes: The drive motor (201) is fixedly installed on one side of the test base (1) via a mounting bracket; The first synchronous pulley (202) is connected to one end of the output shaft of the drive motor (201), and one end of the moving screw (504) extends to the outside of the moving groove (9) and is connected to one side of the first synchronous pulley (202); The second synchronous pulley (204) has one end of the rotating rod (503) extending to the outside of the moving groove (9) and connected to one side of the second synchronous pulley (204); The synchronous belt (203) is connected between the first synchronous pulley (202) and the second synchronous pulley (204).

6. The multifunctional detection device for defects in composite gas cylinders according to claim 1, characterized in that, Also includes: Operating device (8) is connected to the front of test base (1); Two side supports (3) are symmetrically connected to both sides of the test base (1); The gas injection test mechanism (7) is set on the back of the test base (1) and is used to perform pressure tests on the composite gas cylinder; The limiting component (4) is set on the top of the side bracket (3) and is used to fix and limit the composite gas cylinder; The synchronous marking component (6) is located inside the rotating ring (516) and is used to cooperate with the gas injection test mechanism (7) to test and mark the leaking composite gas cylinder.

7. The multifunctional detection device for defects in composite gas cylinders according to claim 6, characterized in that, The synchronization tag component (6) includes: Two piston boxes (602) are symmetrically arranged inside the rotating ring (516), and the two piston boxes (602) can move synchronously relative to each other; Two sealing covers (604) are connected to one side of the piston box (602). The sealing cover (604) is divided into a rigid part and a flexible part. Multiple connecting pipes (603) are connected to both sides of the sealing cover (604). The other end of the connecting pipe (603) is connected to one side of the piston box (602). Two marking stamps (605) are provided, and a sliding plate (606) is connected to one side of each marking stamp (605). The sliding plate (606) is slidably connected inside the sealing cover (604).

8. The multifunctional detection device for defects in composite gas cylinders according to claim 7, characterized in that, The synchronization tag component (6) also includes: Two piston plates (609) are slidably connected to the piston box (602). Two symmetrically arranged sliding rods (608) are connected to one side of the piston plate (609). One end of the sliding rod (608) extends to the outside of the piston box (602) and is connected to one side of the sliding plate (606). Two sets of tension springs (607), each set of tension springs (607) consists of two tension springs (607), the tension springs (607) are sleeved on the outer surface of the sliding rod (608), and the two ends of the tension springs (607) are respectively connected to one side of the sliding plate (606) and one side of the piston box (602); Two sets of electric push rods (601), each set of electric push rods (601) consists of two electric push rods (601), and the output end of the electric push rods (601) in the same set is connected to the same piston box (602), and the other end of the electric push rod (601) is connected to the inner side of the rotating ring (516).

9. A multifunctional detection device for defects in composite gas cylinders according to claim 6, characterized in that, The limiting component (4) includes: Two linear modules (401) are symmetrically arranged on both sides of the test base (1), and the linear modules (401) are connected to the top of the side bracket (3); Two movable seats (403) are connected to one side of the linear module (401); Two movable rings (402) are connected to the top of the movable base (403). A plurality of connecting rods (404) arranged in a circular array are connected to one side of the movable rings (402). A bonding block (405) is connected to the side of the connecting rods (404) away from the movable rings (402).

10. A multifunctional detection method for defects in composite gas cylinders, characterized in that, The multifunctional detection device for defects in composite gas cylinders, as described in any one of claims 1-9, specifically includes the following steps: S1. Transport the composite gas cylinder to the test base (1), and adjust the toothed ring (505) to make the supporting ball (515) move synchronously towards the center to complete the positioning of the composite gas cylinder, and align the axis of the composite gas cylinder with the axis of the moving ring (402) to ensure accurate positioning. S2. The linear module (401) drives the moving ring (402) to move the bonding block (405) towards the shoulder or bottom of the gas cylinder. The rounded corner design of the bonding block (405) adapts to the curved shape and enhances the stability of the composite gas cylinder. S3. Connect the gas injection pipe in the gas injection test mechanism (7) to the port of the composite gas cylinder, and inject gas into it to pressurize it, thus completing the pressurization test of the composite gas cylinder. S4. Start the drive motor (201) so that the fixed ring (508) drives the rotating ring (516) to move linearly along the length of the gas cylinder body. At the same time, the rotating ring (516) drives the machine vision testing device (517) to rotate around the gas cylinder axis to achieve multi-angle dual appearance inspection. S5. During the appearance inspection, the sealing cover (604) moves with the rotating ring (516) and fits against the surface of the composite gas cylinder to form a sealed space. If the gas cylinder leaks, the gas enters the sealing cover (604) and enters the piston box through the connecting pipe (603). The gas pushes the piston plate (609) and drives the marking stamp (605) to move, so that the marking stamp (605) leaves a mark at the leak point.

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