Non-destructive rapid detection device for welding seam of pressure vessel

Abstract

The invention discloses a pressure vessel welding seam nondestructive rapid detection device, which comprises a displacement mechanism and a to-be-detected mechanism, the to-be-detected mechanism comprises supporting frames, a pressure vessel main body is placed at the upper top ends of the two supporting frames, and accessories are welded and formed at the two ends of the pressure vessel main body. The lifting frame rotates to drive the two sets of knocking mechanisms to move up and down, the reset spring is compressed in the process, the two sets of knocking mechanisms move in a staggered mode, the welding position inside the pressure container body and the accessory is impacted, and the welding position is detected through the laser detection head. When the pressure vessel is impacted, whether the pressure vessel is damaged or not after being impacted is checked, if the pressure vessel is damaged, the marking pen can achieve fine adjustment of arc-shaped movement with the help of the marking mechanism so as to make contact with the inner wall of the pressure vessel body, and due to rotation of equipment, marking treatment is conducted on the damaged position, and follow-up treatment is facilitated for workers.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessels, and particularly to a non-destructive and rapid detection device for pressure vessel welds. Background Art

[0002] Pressure vessels are widely used equipment in the industrial field, and their safety and reliability are crucial. As a key part of the pressure vessel structure, the quality of the weld directly affects the performance and service life of the entire equipment. Therefore, weld inspection has become an indispensable link to ensure the safe operation of pressure vessels. The main purpose of weld inspection is to detect various defects existing in the welds, such as cracks, slag inclusions, lack of fusion, incomplete penetration, etc. These defects may cause the equipment to leak or rupture under high pressure, high temperature or corrosive environments, thus triggering safety accidents. Traditional weld inspection methods include visual inspection, penetrant inspection, magnetic particle inspection, ultrasonic inspection, etc.

[0003] In the current manufacturing process, in order to ensure the sealing performance of pressure vessels, the joints on the inner wall are usually closed by welding technology. However, the position of such internal welds is often difficult to directly observe, which poses a great challenge to weld quality inspection. Especially when relying solely on laser detection technology, although laser detection has certain advantages in surface defect detection, due to its limited penetration ability, it is unable to effectively evaluate the strength and quality inside the weld. Insufficient weld strength may cause the equipment to leak under high-pressure environments, and even trigger serious safety accidents. In addition, after laser detection discovers weld defects, it is also unable to directly mark or locate the unqualified parts, which increases the difficulty of subsequent repair work. Repair personnel need to rely on other detection means or methods to determine the specific location of the defects, which not only increases the detection cost but also may delay the repair progress and affect the normal use of the equipment.

[0004] Therefore, we propose a non-destructive and rapid detection device for pressure vessel welds. Summary of the Invention

[0005] The purpose of the present invention is to provide a non-destructive and rapid detection device for pressure vessel welds to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A non-destructive and rapid detection device for pressure vessel welds, comprising a displacement mechanism and a to-be-tested mechanism. The to-be-tested mechanism includes a support frame, and a pressure vessel main body is placed on the upper ends of the two support frames. Accessories are welded and formed at both ends of the pressure vessel main body. The displacement mechanism includes an inner frame arranged on one side of the support frame. A moving frame is slidably sleeved inside the inner frame. A fixing plate is fixedly connected to the upper end of the moving frame. A driving mechanism is arranged on the side of the fixing plate close to the pressure vessel main body. Marking mechanisms for marking unqualified welds are arranged on the end faces of the two marking mechanisms on one side of the knocking mechanism. Auxiliary mechanisms are symmetrically arranged inside the pressure vessel main body. The auxiliary mechanism includes a laser detection head for laser detecting the weld formed between the pressure vessel main body and the accessories.

[0007] Preferably: The displacement mechanism further includes a first motor fixedly connected to the end of the inner frame away from the pressure vessel main body. The output end of the first motor is fixedly connected to a threaded lead screw, and the threaded lead screw passes through the end of the inner frame and is rotatably sleeved with its inner side wall. Guide rods are fixedly connected to both sides of the inner side wall of the inner frame where the threaded lead screw is located. The moving frame is threadedly sleeved with the threaded lead screw and is slidably sleeved with the two guide rods. A second motor is fixedly connected to the outer side wall of the fixing plate. The output end of the second motor is fixedly connected to a first drive shaft. A first gear and a second gear are rotatably sleeved on the side of the fixing plate away from the second motor in an up-and-down structure, and the first gear and the second gear are meshed and driven.

[0008] Preferably: The driving mechanism includes a third motor fixedly connected to the side of the first gear away from the fixing plate. The output end of the third motor is fixedly connected to a connecting shaft. A first double-threaded groove and a second double-threaded groove are respectively formed on the outer wall of the connecting shaft. Three sets of supporting mechanisms for support are arranged at the position of the first double-threaded groove on the outer wall of the connecting shaft. The supporting mechanism includes first reciprocating members symmetrically threadedly sleeved at the position of the first double-threaded groove on the outer wall of the connecting shaft. A plurality of top plates are annularly arranged inside the pressure vessel main body corresponding to the two first reciprocating members. A plurality of first fixing brackets are annularly and fixedly connected to the outer walls of the two first reciprocating members. And a plurality of first fixing brackets of the same structure are symmetrically and fixedly connected to the side of each top plate close to the first reciprocating member. A first connecting arm is rotatably sleeved inside the first fixing brackets on the top plate and the first fixing brackets on the first reciprocating member. A plurality of moving wheels for abutting against the inner side wall of the pressure vessel main body are fixedly connected to the side of the top plate away from the connecting shaft.

[0009] Preferably, the auxiliary mechanism includes second reciprocating members symmetrically and threadedly sleeved at the position of the second bidirectional thread groove on the outer wall of the connecting shaft. A main board is placed inside the pressure vessel body corresponding to the positions of the two second reciprocating members. Second fixing brackets are fixedly connected to the side of the main board close to the connecting shaft and the outer side walls of the second reciprocating members. The same second connecting arm is sleeved inside the second fixing brackets at the lower end of the main board and the second fixing brackets at the end faces of the second reciprocating members. Main side plates are symmetrically and fixedly connected to the outer side wall of the main board. A first auxiliary side plate is fixedly connected to the center of the outer side wall of the main board. The laser detection head is fixedly connected to the upper end of the first auxiliary side plate. A second auxiliary side plate is fixedly connected to the outer side wall of the main board at one side of the first auxiliary side plate.

[0010] Preferably, an extrusion mechanism for driving the knocking mechanism to move up and down is provided at the upper end of the main board. The extrusion mechanism includes a fourth motor embedded inside the main board. The output end of the fourth motor penetrates through the upper end of the main board and is fixedly connected to a second driving shaft. An ascending frame is fixedly connected to the end of the second driving shaft. A plurality of winding frames rotatably sleeved with the lower end of the ascending frame are fixedly connected to the upper end of the main board. A first synchronous pulley is fixedly connected to the lower end of the ascending frame and the outer side wall of the second driving shaft. A second synchronous pulley is rotatably sleeved above one of the main side plates at the upper end of the main board. A synchronous belt for transmission is sleeved on the outer walls of the first synchronous pulley and the second synchronous pulley.

[0011] Preferably, the knocking mechanism includes knocking frames symmetrically and fixedly connected to the upper end of the main board on both sides of the extrusion mechanism. A fixing rod is slidably sleeved at the upper end of the knocking frame. A knocking head is fixedly connected to the end of the fixing rod. Auxiliary wheels are symmetrically arranged at the upper end of the ascending frame. The fixing rod is fixedly connected to the upper end of the auxiliary wheel on the side away from the knocking head. A return spring is fixedly connected to the outer wall of the fixing rod at the upper end of the auxiliary wheel, and the other end of the return spring is fixedly connected to the inner top end of the knocking frame.

[0012] Preferably, the scribing mechanism includes a third fixing bracket fixedly connected to the upper end of the main board. A fourth fixing bracket is rotatably sleeved on the outer wall of the third fixing bracket. A scribing pen for scribing at unqualified welds is fixedly connected to the end of the fourth fixing bracket. A clamping plate is fixedly connected to the side of the scribing pen away from the main board. A limiting spring is fixedly connected to the upper end of the second auxiliary side plate, and the other end of the limiting spring is fixedly connected to the center of the outer side wall of the clamping plate.

[0013] Preferably, the scribing mechanism further includes an L-shaped plate fixedly connected to the top end of one of the main side plates, and the L-shaped plate is located above the second synchronous pulley. A collecting roller is rotatably sleeved on the inner top end of the L-shaped plate. An electric push rod is fixedly connected to the inner top end of the L-shaped plate at one side of the collecting roller. The telescopic end of the electric push rod is fixedly connected with a clamping frame. A spline shaft is slidably sleeved at the center of the second synchronous pulley. A limiting frame is fixedly connected to the outer wall of the spline shaft. A synchronous shaft sleeve is fixedly connected to the outer wall of the spline shaft above the limiting frame, and the synchronous shaft sleeve is slidably sleeved with the collecting roller. A column is fixedly connected to the top end of the main board at one side of the third fixing bracket. A guiding wheel is rotatably connected to the end of the column. A pulling rope is fixedly connected to one side of the scribing pen close to the guiding wheel, and the pulling rope bypasses the guiding wheel and is wound around the outer wall of the collecting roller.

[0014] Preferably, the end of the clamping frame is rotatably sleeved inside the limiting frame. A micro camera sensor is fixedly connected to the top end of the first auxiliary side plate at one side of the laser detection head.

[0015] Preferably, an electronic control board is fixedly connected to the top end of the main board at one side of the lifting frame. A wireless signal transmitting module for transmitting signals to an external control end is fixedly connected to the top end of the main board at one side of the electronic control board. A wireless signal receiving module for receiving external signals is fixedly connected to the top end of the main board at one side of the wireless signal transmitting module.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the present invention, by arranging the knocking mechanism and the pressing mechanism to cooperate with each other, the lifting frame rotates, thereby driving the two knocking mechanisms to move up and down. During this process, the reset spring is compressed. The two knocking mechanisms move in an interlaced manner and impact the welded joints inside the pressure vessel body and its accessories. The laser detection head is used to detect whether there is damage after being impacted. If damage occurs, the scribing pen will achieve fine adjustment of the arc movement with the help of the scribing mechanism, so as to contact the inner wall of the pressure vessel body. Due to the rotation of the equipment, the damaged part is scribed for subsequent workers to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of the sectional structure of the pressure vessel body of the present invention;

[0020] Figure 3 is a partial structural schematic diagram of the displacement mechanism of the present invention;

[0021] Figure 4 This is a schematic diagram of the connecting shaft structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the mainboard structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the partial structure of the main board and the extrusion mechanism of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the mainboard of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the main board and the scribing mechanism of the present invention;

[0027] Figure 10 This is a schematic diagram of the split structure of the bottom end of the L-shaped plate of the present invention;

[0028] Figure 11 It is a schematic diagram of the structure of the knocking mechanism of the present invention.

[0029] In the figure: 1. displacement mechanism; 11. inner frame; 12. first motor; 13. screw rod; 14. guide rod; 15. moving frame; 16. fixed plate; 17. second motor; 171. first drive shaft; 18. first gear; 19. second gear; 2. mechanism to be tested; 21. pressure vessel body; 22. accessories; 23. support frame; 3. drive mechanism; 31. third motor; 32. connecting shaft; 33. first two-way thread groove; 34. second two-way thread groove; 4. support mechanism; 41. first reciprocating member; 42. top plate; 43. first fixed bracket; 44. first connecting arm; 45. movable wheel; 5. auxiliary mechanism; 51. second reciprocating member; 52. second fixed bracket; 53. second connecting arm; 54. main board; 55. main side board; 56. first auxiliary side board; 57. laser detection head; 58 , micro camera sensor; 59, second auxiliary side plate; 6, marking mechanism; 61, L-shaped plate; 611, electric push rod; 612, clamping frame; 613, spline shaft; 614, limit frame; 615, synchronous sleeve; 62, third fixed bracket; 63, fourth fixed bracket; 64, marking pen; 641, clamping plate; 65, limit spring; 66, column; 67, guide wheel; 68, collecting roller; 69, pull rope; 7, knocking mechanism; 71, knocking frame; 72, fixed rod; 73, reset spring; 74, knocking head; 75, auxiliary wheel; 8, extrusion mechanism; 81, rising frame; 82, first synchronous wheel; 83, synchronous belt; 84, second synchronous wheel; 85, winding frame; 86, fourth motor; 87, second drive shaft; 9, electric control board; 10, wireless signal transmitting module; 101, wireless signal receiving module. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 - Figure 4 The present invention provides a technical solution: a non-destructive and rapid detection device for the weld of a pressure vessel, including a displacement mechanism 1 and a to-be-detected mechanism 2. The to-be-detected mechanism 2 includes a support frame 23. The upper ends of the two support frames 23 are provided with a pressure vessel main body 21. Welded accessories 22 are formed at both ends of the pressure vessel main body 21. The displacement mechanism 1 includes an inner frame 11 arranged on one side of the support frame 23. A moving frame 15 is slidably sleeved inside the inner frame 11. A fixing plate 16 is fixedly connected to the upper end of the moving frame 15. A driving mechanism 3 is arranged on the side of the fixing plate 16 close to the pressure vessel main body 21. Marking mechanisms 6 are symmetrically arranged inside the pressure vessel main body 21. Impact mechanisms 7 for impacting the weld connection between the pressure vessel main body 21 and the accessories 22 are arranged on the end faces of the two groups of marking mechanisms 6. Marking mechanisms 6 for marking unqualified welds are arranged on the side of the end face of the marking mechanism 6 where the impact mechanism 7 is located. Auxiliary mechanisms 5 are symmetrically arranged inside the pressure vessel main body 21. The auxiliary mechanism 5 includes laser detection heads 57 for laser detecting the welds formed by the pressure vessel main body 21 and the accessories 22.

[0032] It should be noted that through the moving frame 15 and the fixing plate 16 in the displacement mechanism 1, in cooperation with the driving mechanism 3, the weld connection between the pressure vessel main body 21 and the accessories 22 can be quickly positioned and scanned, greatly shortening the detection time. When the impact mechanism 7 performs impact detection on the weld, it can effectively evaluate the quality of the weld without damaging the weld structure, ensuring the safe use of the pressure vessel. When the weld is unqualified, the marking mechanism 6 can immediately mark the weld position, facilitating subsequent repair or replacement, and improving the accuracy and practicability of the detection.

[0033] Please refer to Figure 1 - Figure 3, the displacement mechanism 1 further includes a first motor 12 fixedly connected to one end of the inner frame 11 away from the pressure vessel body 21. The output end of the first motor 12 is fixedly connected with a threaded lead screw 13, and the threaded lead screw 13 passes through the end of the inner frame 11 and is rotatably sleeved on its inner side wall. Guide rods 14 are fixedly connected to both sides of the inner side wall of the inner frame 11 where the threaded lead screw 13 is located. The moving frame 15 is threadedly sleeved on the threaded lead screw 13 and is slidably sleeved on the two guide rods 14. The outer side wall of the fixed plate 16 is fixedly connected with a second motor 17, and the output end of the second motor 17 is fixedly connected with a first drive shaft 171. The first gear 18 and the second gear 19 are rotatably sleeved on the upper and lower structures on the side of the fixed plate 16 away from the second motor 17, and the first gear 18 and the second gear 19 are meshed and driven.

[0034] It should be noted that by driving the threaded lead screw 13 to rotate through the first motor 12 and cooperating with the guiding action of the guide rod 14, the automatic and stable movement of the moving frame 15 and the fixed plate 16 is realized, and the automation level of the detection process is improved. The precise control of the first motor 12 enables the moving frame 15 to move precisely along the preset path. Cooperating with the transmission of the second motor 17, the first drive shaft 171, the first gear 18 and the second gear 19, the all-round and dead-angle-free scanning of the weld joint of the pressure vessel body 21 is realized, and the detection accuracy is improved. The sliding sleeve design of the guide rod 14 and the moving frame 15 not only ensures the stability during the movement, but also reduces wear and noise, and prolongs the service life of the equipment. By adjusting the rotation speed and direction of the first motor 12 and the second motor 17, the detection speed and direction can be flexibly controlled to meet different detection requirements, and the adaptability and flexibility of the equipment are improved.

[0035] Please refer to Figure 2 - Figure 5, the driving mechanism 3 includes a third motor 31 fixedly connected to the side of the first gear 18 away from the fixed plate 16. The output end of the third motor 31 is fixedly connected with a connecting shaft 32. The outer wall of the connecting shaft 32 is respectively provided with a first double-thread groove 33 and a second double-thread groove 34. At the position of the first double-thread groove 33 on the outer wall of the connecting shaft 32, three sets of support mechanisms 4 for support are arranged. The support mechanism 4 includes a first reciprocating member 41 symmetrically thread sleeved at the position of the first double-thread groove 33 on the outer wall of the connecting shaft 32. Inside the pressure vessel main body 21, a plurality of top plates 42 are annularly arranged corresponding to the positions of the two first reciprocating members 41. A plurality of first fixing brackets 43 are fixedly connected to the outer walls of the two first reciprocating members 41 in an annular array. And on one side of each of the plurality of top plates 42 close to the first reciprocating member 41, a first fixing bracket 43 with the same structure is symmetrically fixedly connected. The first fixing bracket 43 on the top plate 42 and the first fixing bracket 43 on the first reciprocating member 41 are internally rotatably sleeved with a first connecting arm 44. On the side of the top plate 42 away from the connecting shaft 32, a plurality of moving wheels 45 for abutting against the inner wall of the pressure vessel main body 21 are fixedly connected. During the process of moving the device out, the connecting shaft 32 can be supported in the form of a support frame, and after entering the interior of the pressure vessel main body 21, the support frame is slowly removed to avoid damaging the connecting shaft 32.

[0036] It should be noted that by driving the connecting shaft 32 to rotate through the third motor 31 and cooperating with the first double-thread groove 33 and the first reciprocating member 41 in the support mechanism 4 being thread sleeved, the stable reciprocating motion of the first reciprocating member 41 is realized. Furthermore, the top plate 42 and the moving wheels 45 are driven to closely move along the inner wall of the pressure vessel main body 21 through the first connecting arm 44, enhancing the stability during the detection process and avoiding the detection error caused by shaking. The moving wheels 45 in the support mechanism 4 roll along the inner wall of the pressure vessel main body 21 and cooperate with the reciprocating motion of the first reciprocating member 41 to realize the all-round and dead-angle-free coverage detection of the weld joints inside the pressure vessel main body 21, improving the comprehensiveness and accuracy of the detection. The design of the support mechanism 4 enables the detection device to adapt to pressure vessel main bodies 21 with different diameters and shapes. By adjusting the reciprocating stroke and speed of the first reciprocating member 41, it can flexibly adapt to different detection requirements, improving the versatility and practicality of the device.

[0037] Please refer to Figure 4 - Figure 9, the auxiliary mechanism 5 includes second reciprocating members 51 symmetrically threadedly sleeved at the position of the second bidirectional thread groove 34 on the outer wall of the connecting shaft 32. Motherboards 54 are placed inside the pressure vessel main body 21 corresponding to the positions of the two second reciprocating members 51. Second fixing brackets 52 are fixedly connected to one side of the motherboard 54 close to the connecting shaft 32 and the outer sidewalls of the second reciprocating members 51. The same second connecting arm 53 is sleeved inside the second fixing brackets 52 at the end face of the second reciprocating member 51 and the second fixing brackets 52 at the lower bottom end of the motherboard 54. Main side plates 55 are symmetrically and fixedly connected to the outer sidewall of the motherboard 54. A first auxiliary side plate 56 is fixedly connected to the center of the outer sidewall of the motherboard 54. The laser detection head 57 is fixedly connected to the upper top end of the first auxiliary side plate 56. A second auxiliary side plate 59 is fixedly connected to one side of the outer sidewall of the motherboard 54 where the first auxiliary side plate 56 is located. An electronic control board 9 is fixedly connected to one side of the upper top end of the motherboard 54 where the lifting frame 81 is located. A wireless signal transmitting module 10 for transmitting signals to an external control end is fixedly connected to one side of the upper top end of the motherboard 54 where the electronic control board 9 is located. A wireless signal receiving module 101 for receiving external signals is fixedly connected to one side of the upper top end of the motherboard 54 where the wireless signal transmitting module 10 is located.

[0038] It should be noted that the second reciprocating member 51 in the auxiliary mechanism 5 realizes reciprocating motion through the second bidirectional thread groove 34 on the outer wall of the connecting shaft 32. Cooperating with structures such as the motherboard 54 and the second fixing brackets 52 and the second connecting arm 53 thereon, it can flexibly adjust the position of the motherboard 54 and the detection equipment carried thereon, so as to achieve more accurate detection of the weld connection inside the pressure vessel main body 21. Electronic devices such as the electronic control board 9, the wireless signal transmitting module 10, and the wireless signal receiving module 101 are integrated on the motherboard 54, enabling real-time transmission and reception of data during the detection process, realizing remote monitoring and control, greatly improving the detection efficiency and accuracy. The wireless signal transmitting module 10 can transmit the detection data to the external control end in real time, while the wireless signal receiving module 101 can receive external instructions, realizing remote monitoring and data analysis of the detection process, facilitating the timely discovery and handling of weld problems.

[0039] Please refer to Figure 6 - Figure 9The upper top of the main board 54 is provided with an extrusion mechanism 8 that drives the knocking mechanism 7 to move up and down. The extrusion mechanism 8 includes a fourth motor 86 embedded in the main board 54. The output end of the fourth motor 86 passes through the upper top of the main board 54 and is fixedly connected to the second drive shaft 87. The end of the second drive shaft 87 is fixedly connected to the rising frame 81. The upper top of the main board 54 is fixedly connected to a plurality of winding frames 85 rotatably sleeved with the lower bottom end of the rising frame 81. The lower bottom end of the rising frame 81 and the outer side wall of the second drive shaft 87 are fixedly connected with a first synchronous wheel 82. The upper top of the main board 54 is located above one of the main side plates 55 and is rotatably sleeved with a second synchronous wheel 84. The outer walls of the first synchronous wheel 82 and the second synchronous wheel 84 are sleeved with a synchronous belt 83 for transmission.

[0040] It should be noted that by driving the second drive shaft 87 to rotate through the fourth motor 86, and cooperating with the transmission of the first synchronous wheel 82, the second synchronous wheel 84 and the synchronous belt 83, the rising frame 81 and the knocking mechanism 7 carried thereon can move smoothly up and down, and the impact detection of the weld joint is completed efficiently and stably. The design of the extrusion mechanism 8 enables the knocking mechanism 7 to impact according to the preset stroke and speed, avoiding errors caused by manual operation and improving the accuracy and reliability of the detection.

[0041] See also Figure 6 - Figure 11 The knocking mechanism 7 includes a knocking frame 71 symmetrically fixedly connected to the top of the main board 54 and located on both sides of the extrusion mechanism 8. The upper top of the knocking frame 71 is slidably sleeved with a fixing rod 72, and the end of the fixing rod 72 is fixedly connected to a knocking head 74. The upper top of the rising frame 81 is symmetrically provided with an auxiliary wheel 75. The side of the fixing rod 72 away from the knocking head 74 is fixedly connected to the upper top of the auxiliary wheel 75. The upper top of the auxiliary wheel 75 is located at the outer wall of the fixing rod 72 and is fixedly connected to a reset spring 73, and the other end of the reset spring 73 is fixedly connected to the inner top of the knocking frame 71.

[0042] It should be noted that the knocking mechanism 7 uses the knocking head 74 to accurately impact the weld connection, and with the elastic effect of the reset spring 73, it can achieve sensitive detection of the weld quality and timely discover potential problems. The sliding sleeve design of the fixed rod 72 on the knocking frame 71, and the coordinated use of the auxiliary wheel 75 and the reset spring 73 enable the knocking head 74 to remain stable during the impact process, avoiding detection errors caused by shaking. The introduction of the reset spring 73 not only provides a stable impact force, but also can quickly restore the position of the knocking head 74 after the impact, reducing the wear of the knocking mechanism 7 and extending the service life of the equipment. The design of the knocking mechanism 7 enables it to adapt to weld connections of different shapes and sizes. By adjusting the shape and material of the knocking head 74, it can flexibly respond to various detection needs.

[0043] See alsoFigure 6 - Figure 10 , the scribing mechanism 6 includes a third fixing bracket 62 fixedly connected to the top end of the main board 54. A fourth fixing bracket 63 is rotatably sleeved on the outer wall of the third fixing bracket 62. The end of the fourth fixing bracket 63 is fixedly connected with a scribing pen 64 for scribing at the unqualified weld. On the side of the scribing pen 64 away from the main board 54, a clamping plate 641 is fixedly connected. The top end of the second auxiliary side plate 59 is fixedly connected with a limiting spring 65, and the other end of the limiting spring 65 is fixedly connected to the center of the outer side wall of the clamping plate 641. At the same time, corresponding reset mechanisms, such as dampers, can be added on both sides of the limiting spring 65 to ensure that the scribing pen 64 will not shake randomly during use (not shown in detail in the figure).

[0044] It should be noted that the scribing mechanism 6 can instantaneously mark at the detected unqualified weld through the scribing pen 64, which is convenient for subsequent maintenance or replacement, improving the efficiency and practicability of the detection work. The rotational socket design of the fourth fixing bracket 63 on the third fixing bracket 62, combined with the elastic action of the limiting spring 65, enables the scribing pen 64 to remain stable during the scribing process, avoiding scribing errors caused by shaking and ensuring the accuracy of the marking. By adjusting the rotational angle of the fourth fixing bracket 63 on the third fixing bracket 62 and the connection position between the clamping plate 641 and the limiting spring 65, the scribing position of the scribing pen 64 can be flexibly adjusted to adapt to the detection requirements of different weld joints. The introduction of the limiting spring 65 not only provides a stable scribing force but also can quickly restore the position of the scribing pen 64 after scribing, reducing the wear of the scribing pen and extending the service life of the scribing mechanism 6.

[0045] Please refer to Figure 6 - Figure 10, the scribing mechanism 6 further includes an L-shaped plate 61 fixedly connected to the top end of one of the main side plates 55, and the L-shaped plate 61 is located above the second synchronous pulley 84. A collecting roller 68 is rotatably sleeved on the inner top end of the L-shaped plate 61. An electric push rod 611 is fixedly connected to one side of the inner top end of the L-shaped plate 61 where the collecting roller 68 is located. A clamping frame 612 is fixedly connected to the telescopic end of the electric push rod 611. A spline shaft 613 is slidably sleeved at the center of the second synchronous pulley 84. A limiting frame 614 is fixedly connected to the outer wall of the spline shaft 613. A synchronous bushing 615 is fixedly connected to the outer wall of the spline shaft 613 above the limiting frame 614, and the synchronous bushing 615 is slidably sleeved with the collecting roller 68. A column 66 is fixedly connected to one side of the third fixing bracket 62 at the top end of the main board 54. A guide wheel 67 is rotatably connected to the end of the column 66. A pulling rope 69 is fixedly connected to one side of the scribing pen 64 close to the guide wheel 67, and the pulling rope 69 bypasses the guide wheel 67 and is wound around the outer wall of the collecting roller 68. The end of the clamping frame 612 is rotatably sleeved inside the limiting frame 614. A micro camera sensor 58 is fixedly connected to one side of the laser detection head 57 at the top end of the first auxiliary side plate 56.

[0046] It should be noted that by driving the clamping frame 612 to move through the electric push rod 611 and cooperating with the structures of the spline shaft 613, the limiting frame 614 and the synchronous bushing 615, the automatic collection of the pulling rope 69 by the collecting roller 68 is realized, which simplifies the operation process and improves the detection efficiency. The combined use of structures such as the L-shaped plate 61, the collecting roller 68 and the guide wheel 67 ensures the stability of the scribing pen 64 during the scribing process, and at the same time ensures the smooth recovery of the pulling rope 69, avoiding scribing errors or equipment damage caused by pulling. The introduction of the laser detection head 57 and the micro camera sensor 58 provides double guarantees for the weld detection, can more accurately identify weld problems, and improves the accuracy and reliability of the detection. By adjusting the telescopic length of the electric push rod 611, the scribing range of the scribing pen 64 can be flexibly adjusted to adapt to weld joints of different sizes and shapes, improving the adaptability and practicability of the scribing mechanism 6. The micro camera sensor 58 can not only capture the weld image in real time, but also record the entire detection process, facilitating the subsequent analysis and tracking of weld problems. The model of the micro camera sensor 58 can be LYT-808. Both the micro camera sensor 58 and the laser detection head 57 establish a signal transmission channel with the electric control board 10 through wires.

[0047] Working principle: When the device starts, the displacement mechanism 1 takes effect first. The first motor 12 drives the threaded lead screw 13 to rotate. The moving frame 15 sleeved on the threaded lead screw 13 by threads moves smoothly under the guidance of the guide rod 14, thereby driving the fixed plate 16 and all the detection mechanisms thereon to approach the pressure vessel main body 21. The third motor 31 drives the connecting shaft 32 to rotate. The first double-threaded groove 33 and the second double-threaded groove 34 on the outer wall of the connecting shaft 32 drive the three groups of support mechanisms 4 and the two groups of auxiliary mechanisms 5 to work respectively. The support mechanism 4 realizes the uniform support of the inner wall of the pressure vessel main body 21 through the cooperation of the first reciprocating member 41 and the top plate 42, ensuring the stability during the detection process. The auxiliary mechanism 5 drives the main board 54 and the detection device thereon to move up and down through the second reciprocating member 51, providing a necessary support basis for the knocking mechanism 7 and the scribing mechanism 6. At this time, the extrusion mechanism 8 starts to take effect. The fourth motor 86 embedded in the main board 54 drives the second drive shaft 87 to rotate, thereby driving the lifting frame 81 and the first synchronous wheel 82 thereon to rotate. The upper end of the lifting frame 81 is connected to the fixed rod 72 through the auxiliary wheel 75. When the lifting frame 81 rises, the auxiliary wheel 75 pulls the fixed rod 72 and the knocking head 74 at its end upward, while compressing the return spring 73. When the lifting frame 81 descends, the return spring 73 releases energy, pushing the knocking head 74 to impact the weld joint downward. Since the two knocking mechanisms 7 are respectively located on both sides of the pressure vessel main body 21 and perform staggered up and down movements under the drive of the extrusion mechanism 8, the weld can be subjected to all-round impact detection. While the knocking mechanism 7 impacts the weld, the laser detection head 57 and the micro camera sensor 58 are also working continuously. The laser detection head 57 can accurately measure the deformation of the weld after being impacted, and the micro camera sensor 58 can capture the image information of the weld in real time and send it to the external control terminal through the wireless signal transmission module 10 for the staff to perform remote monitoring and analysis. When the laser detection head 57 detects damage to the weld, the scribing mechanism 6 immediately responds. At this time, through the transmission of the synchronous belt 83, the second synchronous wheel 84 also rotates synchronously. The electric push rod 611 drives the clamping frame 612 to move. Through the transmission of the spline shaft 613, the limit frame 614 and the synchronous bushing 615, the collecting roller 68 starts to rotate and collect the pulling rope 69. Since the other end of the pulling rope 69 is connected to the scribing pen 64 and is wound around the collecting roller 68 after passing around the guide wheel 67, as the collecting roller 68 rotates, the scribing pen 64 will perform fine adjustment of arc movement along the damaged part of the weld and finally contact the inner wall of the pressure vessel main body 21. Since the equipment is still rotating, the scribing pen 64 will leave a clear scribing mark at the damaged part for subsequent staff to process. The limit spring 65 in the scribing mechanism 6 plays a key stabilizing role. It can not only ensure the stability of the scribing pen 64 during the scribing process, but also, through its elastic action, enable the scribing pen 64 to quickly return to the initial position after scribing to prepare for the next scribing.

[0048] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or apparatus.

[0049] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-destructive rapid detection device for pressure vessel welds, comprising a displacement mechanism (1) and a mechanism to be detected (2), characterized in that: The test mechanism (2) comprises a support frame (23), a pressure vessel body (21) is placed on the upper top of two support frames (23), and accessories (22) are welded at both ends of the pressure vessel body (21). The displacement mechanism (1) comprises an inner frame (11) arranged on one side of the support frame (23), a moving frame (15) is slidably sleeved inside the inner frame (11), a fixing plate (16) is fixedly connected to the upper top of the moving frame (15), and a driving mechanism (3) is arranged on a side of the fixing plate (16) close to the pressure vessel body (21), and the pressure vessel body (21) is provided with a pressure vessel body (21). The body (21) is symmetrically provided with marking mechanisms (6), and the end faces of the two groups of marking mechanisms (6) are provided with striking mechanisms (7) for impacting the weld joint between the pressure vessel body (21) and the accessory (22). The end faces of the marking mechanisms (6) are located on one side of the striking mechanisms (7) and are provided with marking mechanisms (6) for marking welds that do not meet the standards. The body (21) is symmetrically provided with auxiliary mechanisms (5), and the auxiliary mechanisms (5) include a laser detection head (57) for laser detection of the weld formed between the pressure vessel body (21) and the accessory (22).

2. A non-destructive rapid detection device for pressure vessel welds according to claim 1, characterized in that: The displacement mechanism (1) further comprises a first motor (12) fixedly connected to an end of the inner frame (11) away from the pressure vessel body (21); the output end of the first motor (12) is fixedly connected to a threaded screw (13); the end of the threaded screw (13) penetrates through the inner frame (11) and is rotatably sleeved with the inner wall thereof; the inner wall of the inner frame (11) is fixedly connected to guide rods (14) at both sides of the threaded screw (13); the moving frame (15) is threadably sleeved with the threaded screw (13); the moving frame (15) is slidably sleeved with the two guide rods (14); the outer wall of the fixed plate (16) is fixedly connected to a second motor (17); the output end of the second motor (17) is fixedly connected to a first drive shaft (171); the side of the fixed plate (16) away from the second motor (17) is in an upper and lower structure, and is rotatably sleeved with a first gear (18) and a second gear (19), respectively, and the first gear (18) and the second gear (19) are meshed for transmission.

3. A non-destructive rapid detection device for pressure vessel welds according to claim 2, characterized in that: The driving mechanism (3) comprises a third motor (31) fixedly connected to a side of the first gear (18) away from the fixed plate (16); the output end of the third motor (31) is fixedly connected to a connecting shaft (32); the outer wall of the connecting shaft (32) is respectively provided with a first bidirectional thread groove (33) and a second bidirectional thread groove (34); three groups of supporting mechanisms (4) are arranged at the position of the first bidirectional thread groove (33) on the outer wall of the connecting shaft (32); the supporting mechanism (4) comprises a first reciprocating member (41) symmetrically threadedly sleeved at the position of the first bidirectional thread groove (33) on the outer wall of the connecting shaft (32); the interior of the pressure vessel body (21) corresponds to two first bidirectional thread grooves (34); A plurality of top plates (42) are arranged in an annular array at the position of a reciprocating member (41); a plurality of first fixed brackets (43) are fixedly connected in an annular array to the outer walls of two of the first reciprocating members (41); and a first fixed bracket (43) of the same structure is symmetrically fixedly connected to one side of the top plates (42) close to the first reciprocating member (41); a first connecting arm (44) is rotatably sleeved inside the first fixed bracket (43) on the top plates (42) and the first fixed bracket (43) on the first reciprocating member (41); and a plurality of movable wheels (45) for abutting against the inner side wall of the pressure vessel body (21) are fixedly connected to one side of the top plates (42) away from the connecting shaft (32).

4. A non-destructive rapid detection device for pressure vessel welds according to claim 3, characterized in that: The auxiliary mechanism (5) comprises a second reciprocating member (51) symmetrically threadedly sleeved at a position of a second bidirectional thread groove (34) on an outer wall of the connecting shaft (32); a main plate (54) is placed at a position corresponding to the two second reciprocating members (51) inside the pressure vessel body (21); a second fixing bracket (52) is fixedly connected to a side of the main plate (54) close to the connecting shaft (32) and an outer side wall of the second reciprocating member (51); and the second fixing bracket (52) located at the lower end of the main plate (54) is fixedly connected to the second reciprocating member (51). ) and the second reciprocating member (51) are both sleeved with a same second connecting arm (53), the outer wall of the main board (54) is symmetrically fixedly connected to the main side plate (55), the center of the outer wall of the main board (54) is fixedly connected to the first auxiliary side plate (56), the laser detection head (57) is fixedly connected to the top of the first auxiliary side plate (56), and the outer wall of the main board (54) is fixedly connected to the second auxiliary side plate (59) at one side of the first auxiliary side plate (56).

5. The non-destructive rapid detection device for pressure vessel welds according to claim 4, characterized in that: The upper top of the main board (54) is provided with an extrusion mechanism (8) for driving the knocking mechanism (7) to move up and down. The extrusion mechanism (8) includes a fourth motor (86) embedded in the main board (54). The output end of the fourth motor (86) passes through the upper top of the main board (54) and is fixedly connected to a second drive shaft (87). The end of the second drive shaft (87) is fixedly connected to a rising frame (81). The upper top of the main board (54) is fixedly connected to a plurality of winding frames (85) rotatably sleeved with the lower bottom of the rising frame (81). The lower bottom of the rising frame (81) is fixedly connected to the outer side wall of the second drive shaft (87) with a first synchronous wheel (82). The upper top of the main board (54) is located above one of the main side plates (55) and is rotatably sleeved with a second synchronous wheel (84). The outer walls of the first synchronous wheel (82) and the second synchronous wheel (84) are sleeved with a synchronous belt (83) for transmission.

6. A non-destructive rapid testing device for pressure vessel welds according to claim 5, characterized in that: The knocking mechanism (7) comprises a knocking frame (71) symmetrically fixedly connected to the top of the main board (54) and located on both sides of the extrusion mechanism (8); the upper top of the knocking frame (71) is slidably sleeved with a fixing rod (72); the end of the fixing rod (72) is fixedly connected with a knocking head (74); the upper top of the rising frame (81) is symmetrically provided with an auxiliary wheel (75); the side of the fixing rod (72) away from the knocking head (74) is fixedly connected to the upper top of the auxiliary wheel (75); the upper top of the auxiliary wheel (75) is located at the outer wall of the fixing rod (72) and is fixedly connected with a return spring (73); and the other end of the return spring (73) is fixedly connected to the inner top of the knocking frame (71).

7. The non-destructive rapid detection device for pressure vessel welds according to claim 6, characterized in that: The marking mechanism (6) comprises a third fixed bracket (62) fixedly connected to the top of the main board (54); a fourth fixed bracket (63) is rotatably sleeved on the outer wall of the third fixed bracket (62); a marking pen (64) for marking unqualified welds is fixedly connected to the end of the fourth fixed bracket (63); a clamping plate (641) is fixedly connected to the side of the marking pen (64) away from the main board (54); a limiting spring (65) is fixedly connected to the top of the second auxiliary side plate (59), and the other end of the limiting spring (65) is fixedly connected to the center of the outer wall of the clamping plate (641).

8. The non-destructive rapid detection device for pressure vessel welds according to claim 7, characterized in that: The marking mechanism (6) further comprises an L-shaped plate (61) fixedly connected to the top of one of the main side plates (55), and the L-shaped plate (61) is located above the second synchronous wheel (84), the inner top of the L-shaped plate (61) is rotatably sleeved with a collecting roller (68), the inner top of the L-shaped plate (61) is located on one side of the collecting roller (68) and is fixedly connected to an electric push rod (611), the telescopic end of the electric push rod (611) is fixedly connected to a clamping frame (612), a spline shaft (613) is slidably sleeved at the center of the second synchronous wheel (84), and the outer wall of the spline shaft (613) is fixedly connected to A limit frame (614) is provided, and the outer wall of the spline shaft (613) is fixedly connected with a synchronous sleeve (615) located above the limit frame (614), and the synchronous sleeve (615) is slidably sleeved with a collecting roller (68); the upper top of the main board (54) is fixedly connected with a column (66) located on one side of the third fixed bracket (62), and the end of the column (66) is rotatably connected with a guide wheel (67); the side of the marking pen (64) close to the guide wheel (67) is fixedly connected with a pull rope (69), and the pull rope (69) bypasses the guide wheel (67) and is wrapped around the outer wall of the collecting roller (68).

9. The non-destructive rapid detection device for pressure vessel welds according to claim 8, characterized in that: The end of the clamping frame (612) is rotatably sleeved inside the limiting frame (614), and the upper top of the first auxiliary side plate (56) is located on one side of the laser detection head (57) and is fixedly connected to a micro camera sensor (58).

10. The non-destructive rapid testing device for pressure vessel welds according to claim 5, characterized in that: The upper top of the main board (54) is located on one side of the rising frame (81) and is fixedly connected to an electric control board (9); the upper top of the main board (54) is located on one side of the electric control board (9) and is fixedly connected to a wireless signal transmitting module (10) for transmitting signals to an external control end; the upper top of the main board (54) is located on one side of the wireless signal transmitting module (10) and is fixedly connected to a wireless signal receiving module (101) for receiving external signals.

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