Hydrogen storage bottle liner defect detection equipment

Abstract

The invention belongs to the technical field of hydrogen cylinder detection, and particularly relates to hydrogen storage cylinder liner defect detection equipment which comprises a supporting plate, the lower surface of the supporting plate is fixedly connected with a driving motor, and the output end of the driving motor penetrates through the upper surface of the supporting plate. The hydrogen storage cylinder inner container detection equipment has the functions of defect ultrasonic automatic detection and visual automatic detection, the accuracy of the defect detection result of the inner wall of the hydrogen storage cylinder inner container can be improved, the defects of the hydrogen storage cylinder inner container can be found in time, subsequent processing of the hydrogen storage cylinder inner container with the defects is avoided, and the production efficiency is improved. The use reliability of the hydrogen storage cylinder liner detection equipment is further improved, and the hydrogen storage cylinder liner defect detection equipment also has a function of intermittently and automatically smearing a coupling agent in an ultrasonic detection process, so that the labor intensity of workers can be reduced, the convenience and efficiency of hydrogen storage cylinder liner defect ultrasonic detection are also improved, and the detection efficiency is improved. Meanwhile, waste caused by excessive use of the coupling agent can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrogen cylinder detection, and in particular relates to a hydrogen storage bottle liner defect detection device. Background Art

[0002] As an important secondary energy source that has attracted much attention in the 21st century, hydrogen energy has significant advantages such as abundant resources, high combustion value, cleanliness and renewability. With the vigorous development of fuel cells and fuel cell vehicle technologies, safe and efficient hydrogen storage technology has become the core element for the widespread application of hydrogen energy. Therefore, the inner liner of the hydrogen storage bottle must be strictly tested for safety during the production process, especially the inner liner of the hydrogen storage bottle before the side bottle mouth is formed. Testing at this stage can detect potential defects as early as possible, and then take timely repair or scrapping measures for defective blanks, effectively avoiding more costs in subsequent processing links, and effectively reducing production costs. For example, the patent with authorization announcement number CN213302103U discloses a small longitudinal ultrasonic guided wave probe for hydrogen storage cylinder detection.

[0003] At present, when inspecting the defects of hydrogen storage bottle liner blanks, due to the extremely narrow internal space of the hydrogen storage bottle liner, the staff usually use ultrasonic probes to conduct comprehensive inspections on the outside of the hydrogen storage bottle liner blanks. However, due to the limitations of the inspection position and the interference of inspection errors, it is very easy to ignore the tiny defects on the inner wall of the hydrogen storage bottle liner blanks. These missed tiny defects will be further enlarged during the forming process of the hydrogen storage bottle liner, which will not only seriously affect the accuracy of the defect detection of the hydrogen storage bottle liner blanks, reduce the reliability of the use of the hydrogen storage bottle liner inspection equipment, but also very likely to bring serious safety hazards to the hydrogen storage bottle liner products; In addition, when using an ultrasonic probe to inspect the outer wall of the hydrogen storage bottle liner blank, it is necessary to manually apply a coupling agent to ensure that the ultrasonic probe is in full contact with the surface of the hydrogen storage bottle liner blank. However, the manual operation of applying a coupling agent to the entire outer wall of the hydrogen storage bottle liner blank is extremely inconvenient, which not only reduces the convenience and efficiency of the hydrogen storage bottle liner inspection equipment in detecting defects in the hydrogen storage bottle liner blank, but also greatly increases the labor intensity of the staff. At the same time, during the manual application of the coupling agent, the amount of coupling agent applied is difficult to control, and coupling agent waste is likely to occur.

[0004] To this end, we propose a hydrogen storage bottle liner defect detection device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a hydrogen storage bottle liner defect detection device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a hydrogen storage bottle liner defect detection device, comprising a support plate, a driving motor is fixedly connected to the lower surface of the support plate, the output end of the driving motor passes through the upper surface of the support plate, a through hole matching with the driving motor is provided on the upper surface of the support plate, a bevel gear is fixedly connected to the driving end of the driving motor, a first electric push rod is fixedly connected to the upper surface of the support plate, a connecting strip is fixedly connected to the moving end of the first electric push rod, a moving slot matching with the connecting strip is provided on the side wall of the support plate, a through hole is provided on the outer wall of the connecting strip, and an extension tube is fixedly connected to the hole wall of the through hole, and a detection mechanism is fixedly connected to the side end of the extension tube; The outer wall of the extension tube is sealed and slidably sleeved with a positioning mechanism, and the upper surface of the support plate is fixedly connected with two support components; The bottom end of the support plate is fixedly connected to four support legs, the outer walls of the four support legs are commonly fixedly connected to a bottom plate, and the upper surface of the bottom plate is fixedly connected to a coupling agent supply mechanism, a PLC controller and an alarm; A connecting bearing is fixedly sleeved on the outer wall of one of the supporting legs, a bracket is fixedly connected to the outer wall of the connecting bearing, and a touch screen computer is fixedly connected to the outer wall of the bracket.

[0007] In the above-mentioned hydrogen storage bottle liner defect detection device, the detection mechanism includes a plurality of elastic rubber rods fixedly connected to the inner wall of the side end of an extension tube, the outer wall of the side end of the extension tube is fixedly connected to a bellows, the inner wall of the bellows is fixedly connected to a CCD camera, the outer wall of the CCD camera is fixedly connected to the side ends of the plurality of elastic rubber rods, the inner wall of the extension tube is fixedly connected to a fixing ring, the inner wall of the fixing ring is fixedly connected to a second electric push rod, the side end of the second electric push rod is fixedly connected to a moving rod, the rod wall of the extension tube is provided with two moving through holes matching the moving rod, the rod wall of the moving rod is fixedly connected to a pull rope, the outer wall of the CCD camera is fixedly connected to an extension block, the outer wall of the extension block is fixedly connected to the side end of the pull rope, and the side of the extension block away from the pull rope is fixedly connected to an ultrasonic detection component.

[0008] In the above-mentioned hydrogen storage bottle liner defect detection device, two symmetrically distributed LED fill light sources are fixedly connected to the outer wall of the extension tube on one side close to the CCD camera.

[0009] In the above-mentioned hydrogen storage bottle liner defect detection device, the ultrasonic detection component includes a limit cylinder fixedly connected to the outer wall of the extension block, the inner wall of the limit cylinder is movably connected with a T-shaped rod, the T-shaped rod and the outer wall of the extension block are commonly fixedly connected with a positioning spring, the outer end of the T-shaped rod is fixedly connected with an ultrasonic detection probe, the outer wall of the ultrasonic detection probe is fixedly connected with a fixed frame, the inner wall of the fixed frame is fixedly connected with a porous silica gel block, the outer wall of the porous silica gel block is in contact with the detection end of the ultrasonic probe, the outer wall of the fixed frame is fixedly connected with a conveying pipe, the feed end of the conveying pipe passes through the side end of the extension tube and extends outward, the data line of the ultrasonic detection probe passes through the side end of the extension tube and is electrically connected to the ultrasonic detector body, and the outer wall of the ultrasonic detector body is fixedly connected to the outer wall of the side end of the extension tube.

[0010] In the above-mentioned hydrogen storage bottle liner defect detection device, the positioning mechanism includes a hollow ring that is sealingly and slidingly sleeved with the outer wall of the extension tube, the outer wall of the hollow ring is fixedly sleeved with two sealing bearings, the outer walls of the outer rings of the two sealing bearings are commonly fixedly connected with a connecting ring, the outer wall of the connecting ring is fixedly sleeved with a transparent limit cover, the inner wall of the transparent limit cover is fixedly connected with a rubber expansion ring, the outer wall of the rubber expansion ring is fixedly connected with two conduits, the air inlet ends of the two conduits are fixedly connected with the outer wall of the connecting ring, the outer wall of the hollow ring located inside the connecting ring is provided with an air outlet, the bottom end of the hollow ring is fixedly connected with an air inlet pipe, and the outer wall of the transparent limit cover is fixedly sleeved with an outer bevel gear ring that is vertically meshed with the bevel gear.

[0011] In the above-mentioned hydrogen storage bottle liner defect detection device, the support assembly includes two arc-shaped plates symmetrically fixedly connected to the upper surface of the support plate, and the inner wall of the arc-shaped plate is fixedly connected to a plurality of universal balls.

[0012] In the above-mentioned hydrogen storage bottle liner defect detection device, the coupling agent supply mechanism includes a storage box fixedly connected to the upper surface of the base plate, the upper surface of the storage box is provided with a threaded addition hole, and the hole wall of the threaded addition hole is threadedly connected with a sealing plug, the interior of the storage box is filled with a coupling agent layer, the bottom end of the delivery pipe passes through the top of the storage box and extends downward, the upper surface of the storage box is fixedly connected to a micro air pump, the air outlet end of the micro air pump is fixedly connected to a three-way reversing solenoid valve, the top air outlet of the three-way reversing solenoid valve is fixedly connected to the bottom end of the air inlet pipe, the side air outlet of the three-way reversing solenoid valve is fixedly connected to a branch pipe, and the air outlet end of the branch pipe is fixedly connected to the top of the storage box.

[0013] In the above-mentioned hydrogen storage bottle liner defect detection device, a circular through hole is opened on the outer wall of the bellows, and a plurality of threading holes are opened on the outer wall of the fixing ring.

[0014] Compared with the existing technology, the advantages of a hydrogen storage bottle liner defect detection device are: Through the detection mechanism, positioning mechanism, alarm and touch screen computer, when the inner wall defect detection of the hydrogen storage bottle liner blank that has passed the outer wall detection is carried out before the bottle mouth is formed, the hydrogen storage bottle liner blank is first limited by the positioning mechanism and the support assembly, and the detection mechanism is located at the arc-shaped side end of the hydrogen storage bottle liner blank, and then the hydrogen storage bottle liner blank is driven to rotate by the positioning mechanism, and the first electric push rod and the detection mechanism are cooperated to perform a comprehensive visual inspection of the inside of the hydrogen storage bottle liner blank. After the CCD camera transmits the taken photos to the touch screen computer, the touch screen The computer will compare the photos. If the comparison fails, the PLC controller will control the alarm to alert the staff that the hydrogen storage bottle liner blank has defects and needs to be repaired or scrapped in time to avoid waste of time and cost in subsequent processing. This mechanism gives the hydrogen storage bottle liner inspection equipment the function of automatic visual defect detection, which can improve the accuracy of the results of the inner wall defect detection of the hydrogen storage bottle liner, timely discover the defects of the hydrogen storage bottle liner, avoid defective hydrogen storage bottle liners from entering the subsequent processing links, and improve the reliability of the use of hydrogen storage bottle liner inspection equipment.

[0015] Through the ultrasonic detection component that is set up, while the CCD camera performs a comprehensive visual inspection of the inside of the hydrogen storage bottle liner blank, the ultrasonic detection probe performs ultrasonic detection on the hydrogen storage bottle liner blank through a porous silicone block that is in full contact with the inner wall of the hydrogen storage bottle liner blank. The ultrasonic detector body can automatically analyze the data fed back by the ultrasonic detection probe. If defects are found during the inspection, the ultrasonic detector body will promptly feedback to the PLC controller. The PLC controller controls the alarm according to the defect electrical signal fed back by the ultrasonic detector body, reminding the staff that the hydrogen storage bottle liner blank has hidden defects and needs to be repaired or scrapped in time to avoid wasting time and cost in subsequent processing. This mechanism gives the hydrogen storage bottle liner detection equipment the function of automatic ultrasonic detection of defects, which can improve the accuracy of the inner wall defect detection results of the hydrogen storage bottle liner, promptly discover the defects of the hydrogen storage bottle liner, and avoid the defective hydrogen storage bottle liner from entering the subsequent processing link.

[0016] Through the coupling agent supply mechanism, during the operation of the ultrasonic detection probe, the PLC controller also controls the micro air pump to start for 5 seconds every 1 minute. During the 5 seconds, the coupling agent supply mechanism supplies coupling agent to the ultrasonic detection probe. On the one hand, the coupling agent can ensure that the ultrasonic detection probe is fully in contact with the porous silica gel block to avoid leaving gaps to interfere with ultrasonic propagation; on the other hand, the coupling agent will also be discharged from the circular hole channels on the edges of multiple porous silica gel blocks, so that the outer wall of the porous silica gel block and the inner wall of the hydrogen storage bottle liner blank can also be fully in contact, eliminating the interference of the pores on the ultrasonic detection work. Through this intermittent supply of coupling agent, it is possible to avoid excessive use of coupling agent and achieve the purpose of saving. After a defect alarm occurs, according to the situation that the coupling agent is not continuously applied, it is determined that the position where the coupling agent is interrupted inside the hydrogen storage bottle liner blank is the defect position. This mechanism enables the hydrogen storage bottle liner defect detection equipment to have the function of intermittent automatic application of coupling agent during the ultrasonic detection process, which not only reduces the labor intensity of the staff, but also improves the convenience and efficiency of ultrasonic detection of hydrogen storage bottle liner defects, while avoiding the waste caused by excessive use of coupling agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 2 It is a structural schematic diagram of a partial cross-section of a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 3 It is a structural schematic diagram of a detection mechanism in a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 4 yes Figure 3 A schematic diagram of the structure of the ultrasonic detection component; Figure 5 It is a structural schematic diagram of the second electric push rod part in a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 6 It is a structural schematic diagram of a bellows part in a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 7 It is a structural schematic diagram of a positioning mechanism in a hydrogen storage bottle liner defect detection device provided by the present invention; Figure 8 It is a structural schematic diagram of a coupling agent supply mechanism in a hydrogen storage bottle liner defect detection device provided by the present invention; Fig. 9 It is a structural schematic diagram of a porous silica gel block in a hydrogen storage bottle liner defect detection device provided by the present invention.

[0018] In the figure: 1 support plate, 2 drive motor, 3 bevel gear, 4 detection mechanism, 41 elastic rubber rod, 42 bellows, 43 CCD camera, 44 fixed ring, 45 second electric push rod, 46 moving rod, 47 moving through hole, 48 pull rope, 49 extension block, 5 positioning mechanism, 51 hollow ring, 52 sealing bearing, 53 connecting ring, 54 transparent limit cover, 55 rubber expansion ring, 56 catheter, 57 air outlet, 58 air inlet pipe, 59 outer bevel gear ring, 6 support assembly, 61 arc plate, 62 universal ball, 7 coupling agent supply mechanism, 71 storage box, 72 sealing plug, 7 3 coupling agent layer, 74 micro air pump, 75 three-way reversing solenoid valve, 76 branch pipe, 8 ultrasonic detection component, 81 limit cylinder, 82 T-shaped rod, 83 positioning spring, 84 ultrasonic detection probe, 85 fixing frame, 86 porous silicone block, 87 delivery pipe, 88 ultrasonic detector body, 9 circular through hole, 10 first electric push rod, 11 connecting strip, 12 movable slot, 13 extension pipe, 14 supporting leg, 15 bottom plate, 16 PLC controller, 17 alarm, 18 connecting bearing, 19 bracket, 20 touch screen computer, 21 LED fill light source, 22 threading hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 9As shown, a hydrogen storage bottle liner defect detection device includes a support plate 1, a driving motor 2 is fixedly connected to the lower surface of the support plate 1, the output end of the driving motor 2 passes through the upper surface of the support plate 1, the upper surface of the support plate 1 is provided with a through hole 1 matched with the driving motor 2, the driving end of the driving motor 2 is fixedly connected with a bevel gear 3, the upper surface of the support plate 1 is fixedly connected with a first electric push rod 10, the moving end of the first electric push rod 10 is fixedly connected with a connecting strip 11, the side wall of the support plate 1 is provided with a moving slot 12 matched with the connecting strip 11, the outer wall of the connecting strip 11 is provided with a through hole, and the hole wall of the through hole is fixedly connected with an extension tube 13, the side end of the extension tube 13 is fixedly connected with a detection mechanism 4, the detection mechanism 4 includes a plurality of elastic rubber rods 41 fixedly connected to the inner wall of the side end of the extension tube 13, the outer wall of the side end of the extension tube 13 is fixedly connected with a bellows 42, the inner wall of the bellows 42 is fixedly connected with a CCD camera 43, the extension tube 13 is close to the CCD camera 4 The outer wall of one side of the extension tube 13 is fixedly connected with two symmetrically distributed LED fill light sources 21, and the LED fill light sources 21 can improve the clarity of the photos taken by the CCD camera 43. The outer wall of the CCD camera 43 is fixedly connected to the side ends of multiple elastic rubber rods 41. The inner wall of the extension tube 13 is fixedly connected with a fixing ring 44, and the inner wall of the fixing ring 44 is fixedly connected with a second electric push rod 45. The side end of the second electric push rod 45 is fixedly connected with a moving rod 46. The rod wall of the extension tube 13 is provided with two moving through holes 47 that match the moving rod 46. The rod wall of the moving rod 46 is fixedly connected with a pull rope 48. The outer wall of the CCD camera 43 is fixedly connected with an extension block 49, and the outer wall of the extension block 49 is fixedly connected to the side end of the pull rope 48. The side of the extension block 49 away from the pull rope 48 is fixedly connected with an ultrasonic detection component 8. This mechanism gives the hydrogen storage bottle liner detection equipment the function of automatic visual detection of defects, which can improve the accuracy of the inner wall defect detection results of the hydrogen storage bottle liner.

[0021] The ultrasonic detection assembly 8 includes a limit cylinder 81 fixedly connected to the outer wall of the extension block 49, the inner wall of the limit cylinder 81 is movably connected to a T-shaped rod 82, the T-shaped rod 82 and the outer wall of the extension block 49 are fixedly connected to a positioning spring 83, the outer end of the T-shaped rod 82 is fixedly connected to an ultrasonic detection probe 84, the outer wall of the ultrasonic detection probe 84 is fixedly connected to a fixing frame 85, the inner wall of the fixing frame 85 is fixedly connected to a porous silica gel block 86, the outer wall of the porous silica gel block 86 is in contact with the detection end of the ultrasonic probe, and the outer wall of the fixing frame 85 is fixedly connected to a conveying Tube 87, the feed end of the delivery tube 87 passes through the side end of the extension tube 13 and extends outward, the data line of the ultrasonic detection probe 84 passes through the side end of the extension tube 13, and is electrically connected to the ultrasonic detector body 88, the outer wall of the ultrasonic detector body 88 is fixedly connected to the outer wall of the side end of the extension tube 13, and this mechanism gives the hydrogen storage bottle liner detection equipment the function of automatic ultrasonic detection of defects, which can improve the accuracy of the inner wall defect detection results of the hydrogen storage bottle liner, timely discover the defects of the hydrogen storage bottle liner, and prevent the defective hydrogen storage bottle liner from entering the subsequent processing link.

[0022] The outer wall of the extension tube 13 is sealingly and slidably sleeved with a positioning mechanism 5, and the positioning mechanism 5 includes a hollow ring 51 which is sealingly and slidably sleeved with the outer wall of the extension tube 13, and the outer wall of the hollow ring 51 is fixedly sleeved with two sealing bearings 52, and the outer walls of the outer rings of the two sealing bearings 52 are commonly fixedly connected with a connecting ring 53, and the outer wall of the connecting ring 53 is fixedly sleeved with a transparent limiting cover 54, and the inner wall of the transparent limiting cover 54 is fixedly connected with a rubber expansion ring 55, and the outer wall of the rubber expansion ring 55 is fixedly connected with two conduits 56, and the air inlet ends of the two conduits 56 are fixedly connected with the outer wall of the connecting ring 53, and the outer wall of the hollow ring 51 located inside the connecting ring 53 is provided with an air outlet 57, and the bottom end of the hollow ring 51 is fixedly connected with an air inlet pipe 58, and the outer wall of the transparent limiting cover 54 is fixedly sleeved with an outer bevel gear ring 59 which is vertically meshed with the bevel gear 3. This mechanism can stably limit the inner liner blank of the hydrogen storage bottle, and can drive the inner liner blank of the hydrogen storage bottle to rotate for comprehensive defect detection.

[0023] Two support assemblies 6 are fixedly connected to the upper surface of the support plate 1. The support assembly 6 includes two arc plates 61 symmetrically fixedly connected to the upper surface of the support plate 1. A plurality of universal balls 62 are fixedly connected to the inner wall of the arc plate 61. The plurality of universal balls 62 in the arc plate 61 can support the hydrogen storage bottle inner liner blank and facilitate the rolling of the hydrogen storage bottle inner liner blank.

[0024] The bottom end of the support plate 1 is fixedly connected with four support legs 14, and the outer walls of the four support legs 14 are fixedly connected with a bottom plate 15. The upper surface of the bottom plate 15 is fixedly connected with a coupling agent supply mechanism 7, a PLC controller 16 and an alarm 17. The coupling agent supply mechanism 7 includes a storage box 71 fixedly connected with the upper surface of the bottom plate 15. The upper surface of the storage box 71 is provided with a threaded addition hole, and the hole wall of the threaded addition hole is threadedly connected with a sealing plug 72. The interior of the storage box 71 is filled with a coupling agent layer 73. The bottom end of the delivery pipe 87 passes through the top of the storage box 71 and extends downward. The upper surface of the storage box 71 is fixedly connected with a micro The micro air pump 74 is provided with a three-way reversing solenoid valve 75 at its outlet end, and the top air outlet of the three-way reversing solenoid valve 75 is fixedly connected to the bottom end of the air inlet pipe 58, and the side air outlet of the three-way reversing solenoid valve 75 is fixedly connected to a branch pipe 76, and the air outlet end of the branch pipe 76 is fixedly connected to the top end of the storage box 71. This mechanism enables the hydrogen storage bottle liner defect detection equipment to have the function of intermittent automatic application of coupling agent during the ultrasonic detection process, which not only reduces the labor intensity of the staff, but also improves the convenience and efficiency of ultrasonic detection of hydrogen storage bottle liner defects, while avoiding the waste caused by excessive use of coupling agent.

[0025] A connecting bearing 18 is fixedly sleeved on the outer wall of one of the supporting legs 14, a bracket 19 is fixedly connected to the outer wall of the connecting bearing 18, a touch screen computer 20 is fixedly connected to the outer wall of the bracket 19, a circular through hole 9 is opened on the outer wall of the corrugated tube 42, and a plurality of threading holes 22 are opened on the outer wall of the fixing ring 44. The plurality of threading holes 22 can facilitate the wires and pipes to pass through the fixing ring 44.

[0026] The driving motor 2, the second electric push rod 45, the micro air pump 74, the three-way reversing solenoid valve 75, the alarm 17, the LED fill light source 21 and the first electric push rod 10 are all electrically connected to the output end of the PLC controller 16 through wires, the output ends of the ultrasonic detector body 88 and the touch screen computer 20 are electrically connected to the input end of the PLC controller 16 through wires, the ultrasonic detection probe 84 is electrically connected to the input end of the ultrasonic detector body 88 through a data line, and the CCD camera 43 is electrically connected to the input end of the touch screen computer 20 through a data line. The above-mentioned power-on devices and electrical connections are all existing technologies and will not be repeated here.

[0027] The operating principle of the present invention is now described as follows: when the inner wall defect detection of the hydrogen storage bottle liner blank that has passed the outer wall detection is carried out before the bottle mouth is formed, the hydrogen storage bottle liner blank is first placed on the two support components 6. At this time, the multiple universal balls 62 in the arc plate 61 can support the hydrogen storage bottle liner blank and facilitate the rolling of the hydrogen storage bottle liner blank. The side end of the opening of the hydrogen storage bottle liner blank is located inside the transparent limit cover 54, and the rubber expansion ring 55 is located at the outer wall of the side end of the opening of the hydrogen storage bottle liner blank. The detection mechanism 4 and the ultrasonic detection component 8 are placed on the inner wall of the arc-shaped side end of the hydrogen storage bottle liner blank, and the porous silica gel block 86 is close to the inner wall of the hydrogen storage bottle liner blank. Under the reverse push of the fixed frame 85 and the ultrasonic detection probe 84, the porous silica gel block 86 causes the T-shaped rod 82 to retract into the limit cylinder 81, and the positioning spring 83 is compressed to store energy and generate a rebound force; Subsequently, the micro air pump 74 and the three-way reversing solenoid valve 75 are controlled by the PLC controller 16 to be energized for 10 seconds. After the three-way reversing solenoid valve 75 is energized, the air guide direction is changed, so that the air sucked by the micro air pump 74 enters the air inlet pipe 58 through the top outlet of the three-way reversing solenoid valve 75, and the air in the air inlet pipe 58 enters the rubber expansion ring 55 through the hollow ring 51, the air outlet 57 and the conduit 56, so that the rubber expansion ring 55 expands and squeezes the side end outer wall of the hydrogen storage bottle liner blank, so as to achieve the purpose of fixing the hydrogen storage bottle liner blank. After 10 seconds, the micro air pump 74 and the three-way reversing solenoid valve 75 are both powered off under the control of the PLC controller 16. After the three-way reversing solenoid valve 75 is powered off, the air guide direction returns to the initial state, and the air in the air inlet pipe 58 continues to remain stable. Next, with the assistance of the LED fill light source 21, the CCD camera 43 starts to take pictures of the inner wall of the hydrogen storage bottle liner blank. The CCD camera 43 has an automatic focusing function to ensure that the taken pictures are clear. After the shooting is completed, the CCD camera 43 converts the photo data into an electrical signal and transmits it to the touch screen computer 20. The touch screen computer 20 is pre-installed with a program for comparing the photos taken by the CCD camera 43, and the program stores a variety of preset defective and unqualified photos. When the touch screen computer 20 receives the photos taken by the CCD camera 43, its internal comparison program will automatically perform a comparison. The specific principle is that the program uses an image recognition algorithm to extract and analyze the image features in the photos, and matches them with the features of the preset unqualified photos one by one. If the comparison result is inconsistent with all the preset defective unqualified photos, it indicates that the inner wall of the hydrogen storage bottle liner blank is qualified at this time. On the contrary, if the comparison result coincides with at least one of the preset multiple defective unqualified photos, it indicates that there are appearance defects on the inner wall of the hydrogen storage bottle liner blank. At this time, the touch screen computer 20 will send an unqualified electrical signal to the PLC controller 16. The PLC controller 16 controls the alarm 17 to alarm according to the received unqualified electrical signal, reminding the staff that the hydrogen storage bottle liner blank has defective hidden dangers and needs to be repaired or scrapped in time to avoid waste of time and cost caused by subsequent processing. At the same time, the PLC controller 16 controls the driving end of the driving motor 2 to rotate, and the driving motor 2 drives the transparent limit cover 54 to rotate slowly through the bevel gear 3 and the outer bevel gear ring 59; Specifically, the PLC controller 16 controls the rotation speed of the drive motor 2, and the number of teeth of the outer bevel gear ring 59 is much larger than the number of teeth of the bevel gear 3. The bevel gear 3 has a deceleration effect when transmitting to the outer bevel gear ring 59. This deceleration effect can reduce the rotation speed of the hydrogen storage bottle liner blank, thereby ensuring that the inner wall of the hydrogen storage bottle liner blank can be fully detected by the detection mechanism 4 and the ultrasonic detection component 8. In addition, the PLC controller 16 also controls the moving ends of the first electric push rod 10 and the second electric push rod 45 to move slowly. The moving end of the first electric push rod 10 drives the extension tube 13 to move slowly through the connecting bar 11, so that the extension tube 13 drives the detection mechanism 4 to move toward the transparent limit cover 54, thereby further ensuring the comprehensive detection of the inner wall of the hydrogen storage bottle liner blank. The moving end of the second electric push rod 45 slowly pushes the moving rod 46 to move in the moving through hole 47. The moving rod 46 drives the extension block 49 to be lifted up through the pull rope 48. When the extension block 49 is lifted up, the bellows 42 and the elastic rubber rod 41 are bent. When the moving end of the second electric push rod 45 is fully extended, the CCD camera 43 is pulled up by the pull rope 48 and finally works in a vertical state. The time taken by the CCD camera 43 to be lifted from the horizontal state to the vertical state is consistent with the time taken by the CCD camera 43 to fully detect the arc portion of the side end of the hydrogen storage bottle liner blank The time used for the inner wall is consistent, which can avoid the situation where the CCD camera 43 is erected too early and the inner wall detection of the arc-shaped part of the side end of the hydrogen storage bottle liner blank is partially missed. This mechanism gives the hydrogen storage bottle liner detection equipment the function of automatic visual detection of defects, which can improve the accuracy of the inner wall defect detection results of the hydrogen storage bottle liner, timely discover the defects of the hydrogen storage bottle liner, and avoid the hydrogen storage bottle liner with defects from entering the subsequent processing links, thereby improving the reliability of the use of the hydrogen storage bottle liner detection equipment and avoiding serious safety hazards to the hydrogen storage bottle liner products. While the CCD camera 43 performs a comprehensive visual inspection of the interior of the hydrogen storage bottle liner blank, the ultrasonic detection probe 84 performs ultrasonic detection on the hydrogen storage bottle liner blank through the porous silica gel block 86 that is in full contact with the inner wall of the hydrogen storage bottle liner blank. The working principle of ultrasonic detection is that the ultrasonic detection probe 84 emits ultrasonic waves to the inner wall of the hydrogen storage bottle liner blank. When the ultrasonic wave encounters defects in the inner wall, reflection, refraction and scattering will occur. The reflected ultrasonic signal is received by the ultrasonic detection probe 84, and the probe converts the received signal into an electrical signal and feeds it back to the ultrasonic detector body 88. The ultrasonic detector body 88 can automatically analyze the data fed back by the ultrasonic detection probe 84. The ultrasonic signal characteristic models under normal and defective states are preset inside. By comparing and analyzing the received signal with these models, it is determined whether there are defects. If defects are found during the inspection, the ultrasonic detector body 88 will promptly feedback to the PLC controller 16, and the PLC controller 16 will generate an electrical signal based on the feedback from the ultrasonic detector body 88. The defective electrical signal controls the alarm 17 to sound an alarm, reminding the staff that the hydrogen storage bottle liner blank has defective hidden dangers and needs to be repaired or scrapped in time to avoid wasting time and cost in subsequent processing. Moreover, when the hydrogen storage bottle liner blank is driven to rotate by the positioning mechanism 5, and the first electric push rod 10 drives the extension tube 13 to move through the connecting strip 11, the detection position of the ultrasonic detection probe 84 also changes accordingly. In the process of the CCD camera 43 being stretched and lifted, the ultrasonic detection probe 84 and the porous silica gel block 86 are always in full contact with the inner wall of the hydrogen storage bottle liner blank under the action of the rebound force of the positioning spring 83, thereby ensuring the reliability of the detection work of the ultrasonic detection probe 84. The mechanism gives the hydrogen storage bottle liner detection equipment the function of automatic ultrasonic detection of defects, which can improve the accuracy of the inner wall defect detection results of the hydrogen storage bottle liner, timely discover the defects of the hydrogen storage bottle liner, and avoid the defective hydrogen storage bottle liner from entering the subsequent processing link, further improving the reliability of the use of the hydrogen storage bottle liner detection equipment, while avoiding serious safety hazards to the hydrogen storage bottle liner products.

[0028] In addition, during the operation of the ultrasonic detection probe 84, the PLC controller 16 also controls the micro air pump 74 to start for 5 seconds every 1 minute. During the 5 seconds, the micro air pump 74 draws air into the storage box 71, so that the air is filled to the top of the storage box 71. The filled air squeezes the coupling agent in the coupling agent layer 73 at the bottom of the storage box 71, so that the coupling agent enters the delivery pipe 87 and is transported to the fixed frame 85 along the delivery pipe 87. The role of the coupling agent is crucial. On the one hand, it can ensure that the ultrasonic detection probe 84 is in full contact with the porous silica gel block 86 to avoid gaps that interfere with ultrasonic propagation; on the other hand, the coupling agent will also be discharged from the circular hole channels on the edges of the multiple porous silica gel blocks 86, so that the outer wall of the porous silica gel block 86 can also be fully in contact with the inner wall of the hydrogen storage bottle liner blank, eliminating the interference of the pores on the ultrasonic detection work. As time goes by, 1 minute After that, the coupling agent at the porous silica gel block 86 is gradually consumed. At this time, the PLC controller 16 controls the micro air pump 74 to work for 5 seconds again. The coupling agent supplied within 5 seconds can continue to ensure the reliable operation of the porous silica gel block 86. Through this intermittent supply of coupling agent, it can not only avoid excessive use of coupling agent and achieve the purpose of saving, but also after the defect alarm occurs, according to the situation that the coupling agent is not continuously applied, it can be determined that the position where the coupling agent is interrupted inside the hydrogen storage bottle inner liner blank is the defect position, which is convenient for the staff to subsequently repair the internal defects of the hydrogen storage bottle inner liner blank. This mechanism enables the hydrogen storage bottle inner liner defect detection equipment to have the function of intermittent automatic application of coupling agent during the ultrasonic detection process, which not only reduces the labor intensity of the staff, but also improves the convenience and efficiency of ultrasonic detection of hydrogen storage bottle inner liner defects, while avoiding the waste caused by excessive use of coupling agent.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen storage bottle liner defect detection device, comprising a support plate (1), characterized in that: The lower surface of the support plate (1) is fixedly connected to a driving motor (2), the output end of the driving motor (2) passes through the upper surface of the support plate (1), the upper surface of the support plate (1) is provided with a through hole 1 which matches with the driving motor (2), the driving end of the driving motor (2) is fixedly connected to a bevel gear (3), the upper surface of the support plate (1) is fixedly connected to a first electric push rod (10), the moving end of the first electric push rod (10) is fixedly connected to a connecting strip (11), the side wall of the support plate (1) is provided with a moving slot (12) which matches with the connecting strip (11), the outer wall of the connecting strip (11) is provided with a through hole, and the hole wall of the through hole is fixedly connected to an extension tube (13), and the side end of the extension tube (13) is fixedly connected to a detection mechanism (4); The outer wall of the extension tube (13) is sealingly and slidably sleeved with a positioning mechanism (5), and the upper surface of the support plate (1) is fixedly connected to two support components (6); The bottom end of the support plate (1) is fixedly connected to four support legs (14), the outer walls of the four support legs (14) are commonly fixedly connected to a bottom plate (15), and the upper surface of the bottom plate (15) is fixedly connected to a coupling agent supply mechanism (7), a PLC controller (16) and an alarm (17); A connecting bearing (18) is fixedly sleeved on the outer wall of one of the supporting legs (14), a bracket (19) is fixedly connected to the outer wall of the connecting bearing (18), and a touch screen computer (20) is fixedly connected to the outer wall of the bracket (19).

2. A hydrogen storage bottle liner defect detection device according to claim 1, characterized in that: The detection mechanism (4) comprises a plurality of elastic rubber rods (41) fixedly connected to the inner wall of the side end of the extension tube (13); the outer wall of the side end of the extension tube (13) is fixedly connected to a bellows (42); the inner wall of the bellows (42) is fixedly connected to a CCD camera (43); the outer wall of the CCD camera (43) is fixedly connected to the side ends of the plurality of elastic rubber rods (41); the inner wall of the extension tube (13) is fixedly connected to a fixing ring (44); the inner wall of the fixing ring (44) is fixedly connected to a second electric push rod (45). The side end of the second electric push rod (45) is fixedly connected to a moving rod (46), the rod wall of the extension tube (13) is provided with two moving through holes (47) matching with the moving rod (46), the rod wall of the moving rod (46) is fixedly connected to a pull rope (48), the outer wall of the CCD camera (43) is fixedly connected to an extension block (49), the outer wall of the extension block (49) is fixedly connected to the side end of the pull rope (48), and the side of the extension block (49) away from the pull rope (48) is fixedly connected to an ultrasonic detection component (8).

3. A hydrogen storage bottle liner defect detection device according to claim 2, characterized in that: Two symmetrically distributed LED fill light sources (21) are fixedly connected to the outer wall of one side of the extension tube (13) close to the CCD camera (43).

4. A hydrogen storage bottle liner defect detection device according to claim 2, characterized in that: The ultrasonic detection assembly (8) comprises a limiting cylinder (81) fixedly connected to the outer wall of the extension block (49); the inner wall of the limiting cylinder (81) is movably connected to a T-shaped rod (82); the T-shaped rod (82) and the outer wall of the extension block (49) are jointly fixedly connected to a positioning spring (83); the outer end of the T-shaped rod (82) is fixedly connected to an ultrasonic detection probe (84); the outer wall of the ultrasonic detection probe (84) is fixedly connected to a fixing frame (85); the inner wall of the fixing frame (85) is fixedly connected to a porous A silica gel block (86), wherein the outer wall of the porous silica gel block (86) contacts the detection end of the ultrasonic probe, the outer wall of the fixed frame (85) is fixedly connected to a delivery pipe (87), the feed end of the delivery pipe (87) passes through the side end of the extension tube (13) and extends outward, the data line of the ultrasonic detection probe (84) passes through the side end of the extension tube (13) and is electrically connected to an ultrasonic detector body (88), and the outer wall of the ultrasonic detector body (88) is fixedly connected to the outer wall of the side end of the extension tube (13).

5. A hydrogen storage bottle liner defect detection device according to claim 4, characterized in that: The positioning mechanism (5) comprises a hollow ring (51) which is sealingly and slidably sleeved with the outer wall of the extension tube (13); the outer wall of the hollow ring (51) is fixedly sleeved with two sealing bearings (52); the outer walls of the outer rings of the two sealing bearings (52) are commonly fixedly connected with a connecting ring (53); the outer wall of the connecting ring (53) is fixedly sleeved with a transparent limiting cover (54); the inner wall of the transparent limiting cover (54) is fixedly connected with a rubber expansion ring (55); the outer wall of the rubber expansion ring (55) is fixedly connected with two conduits (56); the air inlet ends of the two conduits (56) are fixedly connected with the outer wall of the connecting ring (53); an air outlet hole (57) is formed on the outer wall of the hollow ring (51) located inside the connecting ring (53); the bottom end of the hollow ring (51) is fixedly connected with an air inlet pipe (58); the outer wall of the transparent limiting cover (54) is fixedly sleeved with an outer bevel gear ring (59) which is vertically meshed with the bevel gear (3).

6. A hydrogen storage bottle liner defect detection device according to claim 1, characterized in that: The support assembly (6) comprises two arc-shaped plates (61) symmetrically fixedly connected to the upper surface of the support plate (1), and a plurality of universal balls (62) are fixedly connected to the inner walls of the arc-shaped plates (61).

7. A hydrogen storage bottle liner defect detection device according to claim 5, characterized in that: The coupling agent supply mechanism (7) comprises a storage box (71) fixedly connected to the upper surface of the bottom plate (15); a threaded adding hole is provided on the upper surface of the storage box (71); a sealing plug (72) is threadedly connected to the hole wall of the threaded adding hole; the interior of the storage box (71) is filled with a coupling agent layer (73); the bottom end of the delivery pipe (87) passes through the top of the storage box (71) and extends downward; a micro air pump (74) is fixedly connected to the upper surface of the storage box (71); the air outlet end of the micro air pump (74) is fixedly connected to a three-way reversing solenoid valve (75); the top air outlet of the three-way reversing solenoid valve (75) is fixedly connected to the bottom end of the air inlet pipe (58); the side air outlet of the three-way reversing solenoid valve (75) is fixedly connected to a branch pipe (76); the air outlet end of the branch pipe (76) is fixedly connected to the top of the storage box (71).

8. A hydrogen storage bottle liner defect detection device according to claim 2, characterized in that: The outer wall of the corrugated tube (42) is provided with a circular through hole (9), and the outer wall of the fixing ring (44) is provided with a plurality of threading holes (22).

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