Nondestructive testing equipment for welding seam of pressure vessel

Abstract

The invention relates to the technical field of welding detection, and particularly discloses pressure vessel welding seam nondestructive testing equipment which comprises a base plate, supporting legs are welded to the four corners of the top of the base plate, a top frame is welded to the tops of the supporting legs, and a detection device is arranged at the top of the top frame. A clamping device is mounted at the top of the top frame and located on the inner side of the detection device; the detection device comprises an annular driving mechanism, a flaw detector is started, and then a second motor, a third motor, a first motor and a second motor are started in sequence to drive a transverse moving block to slide, so that the detection end is close to the outer surface of the pressure container to start to detect the welding seam; the third motor drives the detection end to move up and down to adapt to detection of different heights; the first motor is matched with related parts to enable the lifting and transverse moving mechanism and the detection assembly to rotate around the pressure container, the annular driving mechanism can further enable the detection end to rotate and move, overall detection and adjustment are rapid, efficiency is high, adaptability is high, the equipment detection adaptability is improved, and the detection efficiency and quality of the pressure container are also improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding detection, in particular to nondestructive detection equipment for pressure vessel welds. Background Art

[0002] Pressure vessel weld refers to the joint part where different metal plates, pipes or other metal parts are connected together by welding process during the manufacturing process of pressure vessels. In the manufacturing of pressure vessels, the quality of welds is very important because it is directly related to the strength, sealing and safety of the container. During the welding process, due to the influence of various factors, welds may have various defects, such as pores, slag inclusions, incomplete penetration, cracks, etc.

[0003] Using flaw detectors to conduct nondestructive testing on pressure vessel welds is a key link in ensuring their quality and safety. Nondestructive testing technology is to detect internal or surface defects without damaging or affecting the performance of the object being tested. Flaw detectors use different physical principles for testing. For example, ultrasonic flaw detectors emit ultrasonic waves to the welds. When ultrasonic waves encounter defects, they will produce reflection, refraction and other phenomena. Receiving reflected waves and analyzing signals can determine the location, size and other information of the defects. X-ray flaw detectors use rays to penetrate the welds, and form images on the detector based on the difference in the degree of absorption of rays inside the welds, thereby discovering internal defects. Magnetic particle testing is to magnetize the welds. If there are defects, the magnetic lines of force will be distorted to produce leakage magnetic fields. After the magnetic particles are adsorbed, the defect location can be displayed. Penetrant testing is to apply penetrants to the surface of the welds, use capillary phenomena to make the penetrants penetrate the defects, and then use developers to display the shape and location of the defects. These flaw detection methods can effectively detect weld defects and ensure that pressure vessels can operate safely and reliably after being put into use.

[0004] The Chinese patent with the announcement number "CN221594983U" discloses a non-destructive testing device for special equipment, which drives the probe to detect the weld by a moving component. At the same time, the absorbent cotton at the end of the fixed cylinder can mark the area around the weld. When the probe encounters a bulge in the weld during the detection process, the bulge of the weld will press the probe, causing the probe to expand and contract adaptively, thereby prompting the adjustment component to drive the two sliders to move up and down, stretching the absorbent cotton in the middle, increasing the width of the absorbent cotton marking, and combining the trajectory of the marking, the location of the weld bulge can be clearly seen. Therefore, the bulge is subjected to secondary detection, thereby improving the detection quality, enhancing the accuracy of the detection data, and improving the production quality of the workpiece;

[0005] However, although the above-mentioned device can perform 360-degree rotation detection, there are some shortcomings in the specific detection process. First, the equipment has problems when adjusting the height. During the welding process of the pressure vessel, the weld is usually at different heights. Although the above-mentioned equipment is provided with a height adjustment structure, manual adjustment is usually required during the detection and adjustment process, and rapid adjustment and detection cannot be achieved. Secondly, its entire detection structure is suspended directly above the clamping structure. When it is necessary to inspect the lower end of the outer surface of the pressure vessel, if the height is adjusted to a lower state, the suspended detection mechanism will contact the top of the pressure vessel, thereby affecting its continued adjustment. It can be seen that the existing equipment has certain defects and shortcomings in the overall detection process, and it is obviously impossible to perform auxiliary detection of the outer surface of the pressure vessel more flexibly and accurately. This limitation may lead to low detection efficiency and insufficient accuracy, and may even affect the quality and safety of the pressure vessel. Therefore, it is necessary to improve the equipment to meet the higher requirements for the detection of the outer surface of the pressure vessel. Summary of the invention

[0006] The object of the present invention is to provide a nondestructive testing device for pressure vessel welds to solve the problem that the prior art proposed in the above background technology is not convenient for flexible adjustment as a whole and is not convenient for more rapid and accurate flaw detection during application.

[0007] To achieve the above object, the present invention provides a nondestructive testing device for pressure vessel welds, comprising a base plate, support legs are welded and installed at the four corners of the top of the base plate, a top frame is welded and installed on the top of the support legs, a detection device is provided on the top of the top frame, and a clamping device is installed on the top of the top frame located inside the detection device;

[0008] The detection device includes an annular driving mechanism, which is movably installed on the top of the top frame and located on the outside of the detection device. A mounting arm is installed on one side of the top of the annular driving mechanism, a transverse movement mechanism is installed on the top of the mounting arm, a flaw detector is installed on the top of the transverse movement mechanism, a lifting mechanism is installed on one end of the transverse movement mechanism close to the detection device, a detection component is installed on the outside of the lifting mechanism, and the detection component is electrically connected to the flaw detector through a wire.

[0009] Furthermore, the annular drive mechanism includes a slide and a drive assembly, the slide is welded and installed at the four corners of the top of the top frame, the inner side of the slide is slidably connected with a spur gear ring, the drive assembly is installed in the middle of one side of the top frame, the drive assembly and the spur gear ring are meshed and connected, and the mounting arm is welded and installed on one side of the top of the spur gear ring.

[0010] Furthermore, the driving assembly includes a round seat, which is welded and installed in the middle of one side of the top frame. A first motor is installed on the bottom of the round seat by bolts. The output end of the first motor passes through the round seat and is fixedly connected with a spur gear. The spur gear is meshingly connected with a spur gear ring.

[0011] Furthermore, the transverse movement mechanism includes a transverse guide rail, which is welded and installed on the top outer side of the mounting arm, and a second motor is installed on the outer side of the transverse guide rail by bolts, and a transverse screw rod is fixedly installed on the output end of the second motor through the transverse guide rail, and the transverse screw rod is rotatably connected to the inside of the transverse guide rail, and a transverse block is threadedly connected to the outer surface of the transverse screw rod, and a connecting arm is fixedly connected to the bottom of the transverse movement block, and the outer end of the connecting arm is fixedly connected to the lifting mechanism, and the flaw detector is installed on the top outer end of the transverse guide rail by bolts.

[0012] Furthermore, the lifting mechanism includes a longitudinal guide rail, which is welded and installed on the outer end of the connecting arm, and a third motor is installed on the top of the longitudinal guide rail by bolts, and the output end of the third motor passes through the longitudinal guide rail and is fixedly connected to a longitudinal screw rod, and the longitudinal screw rod is rotatably connected to the inside of the longitudinal guide rail, and the outer surface of the longitudinal screw rod is threadedly connected to a longitudinal movement block, and the longitudinal movement block is slidably connected to the inside of the longitudinal guide rail, and the outer side of the longitudinal movement block is connected to the detection component.

[0013] Furthermore, the overall shape of the transverse block and the longitudinal block is set to be a convex shape, the internal cross-sectional shape of the transverse guide rail and the longitudinal guide rail is also set to be a convex shape, and the outer surfaces of the transverse block and the longitudinal block are fixedly connected with wear-resistant gaskets.

[0014] Furthermore, the detection assembly includes a fixed plate, which is welded and installed on one side of the longitudinal movement block close to the clamping device. Both ends of the fixed plate are fixedly connected with elastic parts, and the ends of the elastic parts are equipped with detection ends, and the detection ends are electrically connected to the flaw detector through wires.

[0015] Furthermore, the elastic member includes a sleeve frame, which is welded and installed on both ends of the fixed plate, a telescopic spring is welded and installed inside the sleeve frame, a push plate is welded and installed on the end of the telescopic spring, the end of the push plate is fixedly connected with a connecting shaft, and the detection end is installed on one end of the connecting shaft close to the clamping device by bolts.

[0016] Furthermore, the clamping device includes a slide groove and a square groove, the slide groove is arranged in a cross shape and opened at the top of the top frame, the slide groove is arranged on the inner side of the spur gear ring, and the square groove is opened in the middle of the top of the top frame, and a power component is provided inside the square groove, and the inside of the slide groove is rotatably connected with a power screw rod, and the outer surface of the power screw rod is threadedly connected with a movable block, and the movable block is movably connected to the inside of the slide groove, and a splint is welded and installed on the top of the movable block.

[0017] Furthermore, the power assembly includes a fixed frame and a bevel gear, the fixed frame is welded and installed in the middle of the bottom of the top frame, the bevel gear is rotatably connected to each surface in the square groove, the outer side of the bevel gear and the inner end of the power screw are fixedly connected, the bottom of the fixed frame is installed with a fourth motor by bolts, the output end of the fourth motor is installed with a bevel gear ring by bolts, and the bevel gear ring is meshingly connected with the bevel gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, in the present invention, the device of the present invention cooperates with the power component by setting the clamping device, and performs well in actual use. After the pressure vessel is placed in the middle of the top of the top frame, the fourth motor is started to drive the bevel gear ring to rotate. Because the bevel gear ring is meshed with the bevel gear, the four bevel gears are synchronously driven to rotate, and then the power screw is driven to rotate in the slide groove, so that the movable block slides, and finally drives the four clamping plates to interact reciprocally. Such a design can stably clamp pressure vessels of different sizes, improve the adaptability of the equipment, and provide reliable guarantee for the stable fixation of the pressure vessel. No matter how the size of the pressure vessel changes, good clamping and positioning can be achieved by adjusting the clamping plate;

[0020] Secondly, in the present invention, after the pressure vessel is clamped and positioned, the flaw detector is started, and then the second motor is started to drive the transverse screw to drive the transverse moving block to slide, thereby driving the connecting arm to make the lifting mechanism close to the pressure vessel. When the detection end of the detection component is in contact with the outer surface of the pressure vessel, the weld can be detected. During the detection process, the third motor is started to drive the longitudinal screw to rotate, so that the longitudinal moving block slides in the longitudinal guide rail, thereby driving the detection end to move up and down to adapt to the detection requirements of different heights of the outer surface of the pressure vessel. This design enables the equipment to flexibly respond to weld detection of various heights, thereby improving the comprehensiveness and accuracy of the detection;

[0021] Thirdly, in the present invention, the first motor can be started during the detection process to drive the spur gear to rotate. Since the spur gear is meshed with the spur gear ring, the spur gear ring can be driven to rotate in the slide seat, thereby driving the lifting mechanism, the transverse movement mechanism and the detection assembly to rotate around the pressure vessel. At the same time, the annular drive mechanism can drive the detection end to perform rotational displacement, so that the detection end of the flaw detector can perform comprehensive detection more accurately, and the overall detection adjustment is rapid, efficient, and has strong adaptability, which greatly improves the detection adaptability performance of the equipment, provides strong support for high-quality detection of pressure vessels, and effectively improves the overall detection efficiency of pressure vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a side view structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure in the present invention when viewed from above;

[0026] Figure 5 It is a schematic diagram of the structure of the clamping device in the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the detection device in the present invention close to the clamping device;

[0028] Figure 7 It is a structural schematic diagram of the detection device in the present invention, which is away from the clamping device;

[0029] Figure 8 It is a schematic diagram of the structure of the lifting mechanism and the detection component in the present invention.

[0030] In the figure: 1, substrate; 2, detection device; 21, annular drive mechanism; 211, slide seat; 212, drive assembly; 2121, round seat; 2122, first motor; 2123, spur gear; 213, spur gear ring; 22, mounting arm; 23, traverse mechanism; 231, lateral guide rail; 232, second motor; 233, lateral screw rod; 234, traverse block; 235, connecting arm; 24, flaw detector; 25, lifting mechanism; 251, longitudinal guide rail; 252, third motor; 253, Longitudinal screw; 254, longitudinal movement block; 26, detection assembly; 261, fixed plate; 262, elastic member; 2621, sleeve frame; 2622, telescopic spring; 2623, push plate; 2624, connecting shaft; 263, detection end; 3, clamping device; 31, slide groove; 32, square groove; 33, power assembly; 331, fixed frame; 332, bevel gear; 333, fourth motor; 334, bevel gear ring; 34, power screw; 35, movable block; 36, splint; 4, top frame; 5, support leg. DETAILED DESCRIPTION

[0031] Example

[0032] See also Figure 1-Figure 8 A nondestructive testing device for a weld of a pressure vessel in an embodiment of the present invention comprises a base plate 1, support legs 5 are welded and installed at the four corners of the top of the base plate 1, a top frame 4 is welded and installed on the top of the support legs 5, a detection device 2 is provided on the top of the top frame 4, and a clamping device 3 is installed on the top of the top frame 4 located inside the detection device 2;

[0033] The detection device 2 includes an annular driving mechanism, which is movably mounted on the top of the top frame 4 and located on the outside of the detection device 2. A mounting arm 22 is mounted on one side of the top of the annular driving mechanism, a transverse mechanism 23 is mounted on the top of the mounting arm 22, a flaw detector 24 is mounted on the top of the transverse mechanism 23, a lifting mechanism 25 is mounted on one end of the transverse mechanism 23 close to the detection device 2, a detection component 26 is mounted on the outside of the lifting mechanism 25, and the detection component 26 is electrically connected to the flaw detector 24 through a wire. The top frame 4 welded at the four corners of the top of the substrate 1 provides a stable supporting structure for the entire device. The annular driving mechanism in the detection device 2 is movably mounted on the outside of the top of the top frame 4, and can drive the mounting arm 22, the transverse mechanism 23, the lifting mechanism 25 and the detection component 26 to rotate around the pressure vessel, thereby realizing comprehensive detection of welds at different positions of the pressure vessel and improving the coverage of the detection. The mounting arm 22 is the transverse mechanism 23. An installation position is provided to ensure its stability during the inspection process. The transverse movement mechanism 23 can drive the lifting mechanism 25 to move closer to or away from the pressure vessel, adapting to the inspection needs of pressure vessels of different sizes and improving the versatility of the equipment. The flaw detector 24 is installed on the top of the transverse movement mechanism 23 and is electrically connected to the detection component 26 through a wire. It can timely receive the signal from the detection component 26 and analyze and process it to accurately judge the quality of the weld. The lifting mechanism 25 can drive the detection component 26 to move up and down to adapt to the weld inspection at different heights on the outer surface of the pressure vessel, so that the equipment can perform comprehensive and accurate inspections on pressure vessels of various shapes and sizes. The clamping device 3 is installed on the inner side of the top of the top frame 4, and can stably clamp the pressure vessel to ensure that the pressure vessel will not move during the inspection process, providing a guarantee for the accuracy of the inspection. In summary, the non-destructive testing equipment has the advantages of high efficiency, accuracy, and versatility in the inspection of pressure vessel welds.

[0034] See also Figure 1-Figure 4 and Figure 6-Figure 7The annular driving mechanism includes a slide 211 and a driving assembly 212. The slide 211 is welded and installed at the four corners of the top of the top frame 4. The inner side of the slide 211 is slidably connected with a straight tooth ring 213. The driving assembly 212 is installed in the middle of one side of the top frame 4. The driving assembly 212 and the straight tooth ring 213 are meshed and connected. The mounting arm 22 is welded and installed on one side of the top of the straight tooth ring 213. The driving assembly 212 includes a round seat 2121, which is welded and installed in the middle of one side of the top frame 4. The bottom of the round seat 2121 The first motor 2122 is installed by bolts, and the output end of the first motor 2122 passes through the round seat 2121 and is fixedly connected with a spur gear 2123. The spur gear 2123 is meshed with the spur gear ring 213. The slide seat 211 is welded and installed at the four corners of the top of the top frame 4, providing a stable sliding track for the spur gear ring 213. The spur gear ring 213 can slide smoothly on the inside of the slide seat 211, so that the mounting arm 22 installed on one side of the top of the spur gear ring 213 can move around the pressure as the spur gear ring 213 moves. The container rotates, and this rotation function can ensure that the detection component 26 can perform comprehensive detection on all angles of the pressure vessel, greatly improving the coverage of the detection. The round seat 2121 is welded and installed in the middle of one side of the top frame 4, providing a firm installation position for the first motor 2122. The first motor 2122 is installed by bolts, which is convenient for the installation and disassembly of the motor, and convenient for maintenance and repair. The output end of the first motor 2122 passes through the round seat 2121 and is fixedly connected to the spur gear 2123, and the spur gear 2123 is meshed and connected with the spur gear ring 213. This transmission mode is stable and reliable. When the first motor 2122 is started, it can accurately drive the spur gear 2123 to rotate, thereby driving the spur gear ring 213 to rotate in the slide seat 211. This driving mode can ensure that the rotation speed and position of the detection component 26 can be accurately controlled, thereby improving the accuracy and precision of the detection. In short, the annular drive mechanism can realize comprehensive and accurate detection in the pressure vessel weld detection, and improve the performance and reliability of the detection equipment.

[0035] See also Figure 6-Figure 8The transverse movement mechanism 23 includes a transverse guide rail 231, which is welded and installed on the top outer side of the mounting arm 22. A second motor 232 is installed on the outer side of the transverse guide rail 231 by bolts. The output end of the second motor 232 passes through the transverse guide rail 231 and is fixedly installed with a transverse screw rod 233. The transverse screw rod 233 is rotatably connected to the inside of the transverse guide rail 231. The outer surface of the transverse screw rod 233 is threadedly connected with a transverse movement block 234. The bottom of the transverse movement block 234 is fixedly connected with a connecting arm 235. The outer end of the connecting arm 235 is fixedly connected to the lifting mechanism 25. The flaw detector 24 is installed on the top outer end of the transverse guide rail 231 by bolts. The lifting mechanism 25 includes a longitudinal guide rail 251, which is welded and installed on the outer side of the connecting arm 235. The third motor 252 is installed on the top of the longitudinal guide rail 251 by bolts, and the output end of the third motor 252 passes through the longitudinal guide rail 251 and is fixedly connected to the longitudinal screw rod 253, which is rotatably connected to the inside of the longitudinal guide rail 251, and the outer surface of the longitudinal screw rod 253 is threadedly connected to the longitudinal movement block 254, which is slidably connected to the inside of the longitudinal guide rail 251, and the outer side of the longitudinal movement block 254 is connected to the detection component 26, and the overall shape of the transverse movement block 234 and the longitudinal movement block 254 are both set to a convex shape, and the internal cross-sectional shapes of the transverse guide rail 231 and the longitudinal guide rail 251 are also set to a convex shape, and the outer surfaces of the transverse movement block 234 and the longitudinal movement block 254 are fixedly connected with wear-resistant gaskets. In the transverse movement mechanism 23, the transverse guide rail 231 It is welded and installed on the outer side of the top of the mounting arm 22, providing a stable sliding path for the transverse block 234. The second motor 232 is installed by bolts, which is convenient for the installation and removal of the motor and convenient for maintenance. The output end of the second motor 232 passes through the transverse guide rail 231 and fixes the transverse screw rod 233. The transverse screw rod 233 rotates inside the transverse guide rail 231 and can accurately drive the transverse block 234 to move. The connecting arm 235 at the bottom of the transverse block 234 is fixedly connected to the lifting mechanism 25, so that the transverse mechanism 23 can drive the lifting mechanism 25 to move closer to or away from the pressure vessel, which can meet the inspection requirements of pressure vessels of different sizes. The flaw detector 24 is installed on the outer end of the top of the transverse guide rail 231 by bolts, which is convenient for installation and removal, and also ensures that the flaw detector 24 is in the detection In order to ensure stability during the process, in the lifting mechanism 25, the longitudinal guide rail 251 is welded and installed on the outer end of the connecting arm 235, providing a vertical sliding track for the longitudinal moving block 254, and the third motor 252 is installed by bolts to facilitate the installation, disassembly and maintenance of the motor. The output end of the third motor 252 passes through the longitudinal guide rail 251 and is fixedly connected to the longitudinal screw rod 253. The longitudinal screw rod 253 rotates inside the longitudinal guide rail 251 and can accurately drive the longitudinal moving block 254 to move up and down. The longitudinal moving block 254 is slidably connected to the inside of the longitudinal guide rail 251, and its outer side is connected to the detection component 26, which can drive the detection component 26 to move up and down, and is suitable for the detection of welds at different heights on the outer surface of the pressure vessel. The overall shape of the transverse moving block 234 and the longitudinal moving block 254 is set to a convex shape.The internal cross-sectional shape of the transverse guide rail 231 and the longitudinal guide rail 251 is also set to a convex shape. This shape design makes the transverse block 234 and the longitudinal block 254 more stable during the sliding process, and there will be no shaking or separation from the guide rail. The outer surface of the transverse block 234 and the longitudinal block 254 is fixedly connected with a wear-resistant gasket, which can reduce the wear during the sliding process and extend the service life of the transverse block 234 and the longitudinal block 254. At the same time, it also ensures the smoothness of sliding. In short, the design of the transverse mechanism 23 and the lifting mechanism 25 can realize the accurate detection of welds at different positions and heights of the pressure vessel, and improve the performance and reliability of the detection equipment.

[0036] See also Figure 8The detection assembly 26 includes a fixed plate 261, which is welded and installed on one side of the longitudinal moving block 254 close to the clamping device 3. Both ends of the fixed plate 261 are fixedly connected with elastic members 262, and the ends of the elastic members 262 are installed with detection ends 263. The detection ends 263 are electrically connected to the flaw detector 24 through wires. The elastic member 262 includes a sleeve frame 2621, which is welded and installed on both ends of the fixed plate 261. A telescopic spring 2622 is welded and installed inside the sleeve frame 2621, and a push plate 2623 is welded and installed at the ends of the telescopic spring 2622. The end of the plate 2623 is fixedly connected with a connecting shaft 2624, and the detection end 263 is installed on the end of the connecting shaft 2624 close to the clamping device 3 by bolts. The fixed plate 261 is welded and installed on the side of the longitudinal movement block 254 close to the clamping device 3, ensuring the stability of the detection component 26 during the lifting process. The elastic member 262 fixedly connected at both ends of the fixed plate 261 provides a certain buffering effect for the detection end 263. The sleeve frame 2621 in the elastic member 262 is welded at both ends of the fixed plate 261, providing a stable installation space for the internal telescopic spring 2622. The telescopic spring 2 622 can be adaptively adjusted according to the shape and pressure of the outer surface of the pressure vessel during the detection process. When the detection end 263 contacts the outer surface of the pressure vessel, the telescopic spring 2622 presses the detection end 263 tightly against the surface of the pressure vessel through the push plate 2623 and the connecting shaft 2624 to ensure the accuracy of the detection. Under the action of the telescopic spring 2622, the push plate 2623 can smoothly push the connecting shaft 2624 to move. The connecting shaft 2624 connects the detection end 263 with the push plate 2623, so that the detection end 263 can be adjusted with the movement of the push plate 2623. The detection end 263 is installed at one end of the connecting shaft 2624 close to the clamping device 3 by bolts. This installation method is convenient for the installation and disassembly of the detection end 263, and is convenient for maintenance and replacement. During the detection process, the detection end 263 is electrically connected to the flaw detector 24 through a wire, and can transmit the detected signal to the flaw detector 24 for analysis and processing in time. This connection method is stable and reliable, ensuring the accuracy and timeliness of the detection data. In short, the design of the detection component 26 can adapt to pressure vessels of different shapes and surface conditions, thereby improving the accuracy and reliability of detection.

[0037] See also Figure 1-Figure 5The clamping device 3 includes a slide groove 31 and a square groove 32. The slide groove 31 is arranged in a cross shape and is opened at the top of the top frame 4. The slide groove 31 is arranged on the inner side of the spur gear ring 213. The square groove 32 is opened in the middle of the top of the top frame 4. A power assembly 33 is arranged inside the square groove 32. The inside of the slide groove 31 is rotatably connected with a power screw rod 34. The outer surface of the power screw rod 34 is threadedly connected with a movable block 35. The movable block 35 is movably connected to the inside of the slide groove 31. A clamping plate 36 is welded and installed on the top of the movable block 35. The power assembly 33 includes a fixed frame 331 and a bevel gear 332. The fixed frame 331 is welded and installed in the middle of the bottom of the top frame 4. The bevel gear 332 is rotatably connected to the inside of the slide groove 31. The outer side of the bevel gear 332 is fixedly connected to the inner end of the power screw rod 34, and the fourth motor 333 is installed at the bottom of the fixing frame 331 by bolts. The output end of the fourth motor 333 is installed with a bevel gear ring 334 by bolts. The bevel gear ring 334 and the bevel gear 332 are meshed and connected. The slide groove 31 arranged in a cross shape on the top of the top frame 4 provides a moving track for the movable block 35. The slide groove 31 is arranged on the inner side of the spur gear ring 213, and the layout is reasonable. It makes full use of the space. The square groove 32 is opened in the middle of the top of the top frame 4, providing an installation space for the power component 33, and the power screw rod 34 rotatably connected inside the slide groove 31 can accurately The movable block 35 is driven to move in the slide groove 31. The movable block 35 is movably connected to the inside of the slide groove 31 to ensure smooth movement. The clamping plate 36 welded and installed on the top of the movable block 35 can stably clamp the pressure vessel under the drive of the movable block 35. The fixing frame 331 in the power assembly 33 is welded and installed in the middle of the bottom of the top frame 4, providing a firm installation position for components such as the fourth motor 333 and the bevel gear 332. The bevel gear 332 is rotatably connected to each surface in the square groove 32, and the outer side is fixedly connected to the inner end of the power screw rod 34, so that multiple bevel gears 332 can rotate synchronously, thereby realizing the synchronous movement of the movable blocks 35 in four directions. The fourth motor 333 is installed at the bottom of the fixed frame 331 by bolts, which is convenient for installation and disassembly and maintenance. The output end of the fourth motor 333 is meshed with the bevel gear ring 334 installed by bolts and connected with the bevel gear 332. When the fourth motor 333 is started, it can accurately drive the bevel gear 332 to rotate, and then drive the power screw 34 to rotate, so as to realize the movement of the movable block 35. This transmission method is stable and reliable, and can ensure that the clamping plate 36 can stably clamp pressure vessels of different sizes, providing a stable environment for the detection process. In short, the design of the clamping device 3 can adapt to pressure vessels of different sizes and ensure the stability of the pressure vessel during the detection process.

[0038] The working principle of the present invention is: by setting the clamping device 3 and the power assembly 33 to cooperate with each other, the pressure vessel can be placed in the middle position of the top of the top frame 4 during actual use of the device. At this time, the fourth motor 333 is started, and the fourth motor 333 drives the bevel gear ring 334 to rotate. Since the bevel gear ring 334 is meshed and connected with the bevel gear 332, the bevel gear ring 334 and the bevel gear 332 are meshed and driven by the mutual meshing transmission, the four bevel gears 332 can be synchronously driven to rotate. After the four bevel gears 332 rotate, they can assist in driving the power screw 34 to rotate inside the slide groove 31, and the power screw When the motor 34 rotates, it can assist in driving the interactive block to slide synchronously inside the slide slot 31, and the fourth motor 333 synchronously drives the four movable blocks 35 to slide inside the slide slot 31, thereby assisting in synchronously driving the four clamping plates 36 to interact reciprocally. The four clamping plates 36 are synchronously displaced, which can enable the four clamping plates 36 to clamp and position the pressure vessel in the middle position. By adjusting the reciprocating displacement of the four clamping plates 36, it can assist in stably clamping and positioning pressure vessels of different sizes, greatly improving the overall adaptability of the device during application, and providing a reliable guarantee for the stable fixation of the pressure vessel.

[0039] By setting up the detection device 2, the device can be carried out during the actual application. When the pressure vessel is stably positioned and clamped, the flaw detector 24 can be started to run, and then the second motor 232 is started. At this time, the second motor 232 drives the transverse screw rod 233 to rotate, and then drives the transverse block 234 to slide. During the sliding process of the transverse block 234, the connecting arm 235 can be driven to drive the lifting mechanism 25 to gradually approach the pressure vessel. When the detection end 263 of the detection component 26 on the lifting mechanism 25 is tightly attached to the outer surface of the pressure vessel, the weld can be accurately detected;

[0040] During the detection process, the third motor 252 can be started to run, and the third motor 252 drives the longitudinal screw rod 253 to rotate, and the rotation of the longitudinal screw rod 253 can assist in driving the longitudinal movement block 254 to slide smoothly inside the longitudinal guide rail 251. At this time, the movement of the longitudinal movement block 254 can assist in driving the detection end 263 to achieve up and down displacement. This up and down displacement function can perfectly adapt to the detection requirements of different heights of the outer surface of the pressure vessel;

[0041] Moreover, during the detection process, the first motor 2122 can be further started, and the first motor 2122 drives the spur gear 2123 to rotate. Since the spur gear 2123 is meshed and connected with the spur gear ring 213, the rotation of the spur gear 2123 can assist in driving the spur gear ring 213 to rotate inside the slide 211, and then, it can drive the lifting mechanism 25, the transverse mechanism 23 and the detection assembly 26 to rotate around the pressure vessel. At this time, the lifting mechanism 25 drives the detection end 263 to move up and down, and the transverse mechanism 23 can drive the detection end 263 to approach the pressure vessel, so as to adapt to the flaw detection of pressure vessels of different sizes;

[0042] Moreover, during the detection process, the annular driving mechanism 21 can drive the detection end 263 to rotate and displace, so that the detection end 263 of the entire flaw detector 24 can perform comprehensive detection more accurately. Overall, its detection adjustment is relatively rapid, the efficiency is extremely high, and the overall adaptability is very strong, which greatly improves the overall detection adaptability of the device;

[0043] In addition, due to the provision of the elastic member 262, during the detection process, the telescopic spring 2622 inside the sleeve frame 2621 can be reset, thereby prompting the push plate 2623 to push the connecting shaft 2624, driving the detection end 263 to be close to the outer surface of the pressure vessel. Such a design can significantly improve the detection accuracy of the detection end 263 during the detection period. It can be seen that the present equipment can greatly improve the overall detection efficiency and detection adaptability of the pressure vessel, and provide solid and powerful support for the high-quality detection of the pressure vessel.

Claims

1. A non-destructive testing device for pressure vessel welds, characterized in that: The invention comprises a base plate (1), support legs (5) are welded and installed at the four corners of the top of the base plate (1), a top frame (4) is welded and installed on the top of the support legs (5), a detection device (2) is provided on the top of the top frame (4), and a clamping device (3) is installed on the top of the top frame (4) and located inside the detection device (2); The detection device (2) comprises an annular driving mechanism, which is movably mounted on the top of the top frame (4) and is located on the outside of the detection device (2); a mounting arm (22) is mounted on one side of the top of the annular driving mechanism; a transverse movement mechanism (23) is mounted on the top of the mounting arm (22); a flaw detector (24) is mounted on the top of the transverse movement mechanism (23); a lifting mechanism (25) is mounted on one end of the transverse movement mechanism (23) close to the detection device (2); a detection component (26) is mounted on the outside of the lifting mechanism (25); and the detection component (26) is electrically connected to the flaw detector (24) via a wire.

2. The nondestructive testing equipment for pressure vessel welds according to claim 1, characterized in that: The annular driving mechanism comprises a slide seat (211) and a driving assembly (212); the slide seat (211) is welded and installed at the four corners of the top of the top frame (4); a spur gear ring (213) is slidably connected to the inner side of the slide seat (211); the driving assembly (212) is installed in the middle of one side of the top frame (4); the driving assembly (212) and the spur gear ring (213) are meshed and connected; and the mounting arm (22) is welded and installed on one side of the top of the spur gear ring (213).

3. The nondestructive testing equipment for pressure vessel welds according to claim 2, characterized in that: The driving assembly (212) comprises a round seat (2121), the round seat (2121) is welded and installed on the middle part of one side of the top frame (4), a first motor (2122) is installed on the bottom of the round seat (2121) by means of bolts, an output end of the first motor (2122) passes through the round seat (2121) and is fixedly connected with a spur gear (2123), and the spur gear (2123) is meshingly connected with the spur gear ring (213).

4. The nondestructive testing equipment for pressure vessel welds according to claim 1, characterized in that: The transverse movement mechanism (23) comprises a transverse guide rail (231), the transverse guide rail (231) is welded and installed on the top outer side of the mounting arm (22), a second motor (232) is installed on the outer side of the transverse guide rail (231) by means of bolts, an output end of the second motor (232) passes through the transverse guide rail (231) and is fixedly installed with a transverse screw rod (233), the transverse screw rod (233) is rotatably connected to the inside of the transverse guide rail (231), a transverse movement block (234) is threadedly connected to the outer surface of the transverse screw rod (233), a connecting arm (235) is fixedly connected to the bottom of the transverse movement block (234), an outer end of the connecting arm (235) is fixedly connected to the lifting mechanism (25), and the flaw detector (24) is installed on the top outer end of the transverse guide rail (231) by means of bolts.

5. The nondestructive testing equipment for pressure vessel welds according to claim 4, characterized in that: The lifting mechanism (25) comprises a longitudinal guide rail (251), the longitudinal guide rail (251) is welded and installed on the outer end of the connecting arm (235), a third motor (252) is installed on the top of the longitudinal guide rail (251) by bolts, the output end of the third motor (252) passes through the longitudinal guide rail (251) and is fixedly connected to a longitudinal screw rod (253), the longitudinal screw rod (253) is rotatably connected to the inside of the longitudinal guide rail (251), the outer surface of the longitudinal screw rod (253) is threadedly connected to a longitudinal movement block (254), the longitudinal movement block (254) is slidably connected to the inside of the longitudinal guide rail (251), and the outer side of the longitudinal movement block (254) is connected to the detection component (26).

6. The nondestructive testing equipment for pressure vessel welds according to claim 5, characterized in that: The overall shape of the transverse movement block (234) and the longitudinal movement block (254) are both set to be a convex shape, the internal cross-sectional shape of the transverse guide rail (231) and the longitudinal guide rail (251) are also set to be a convex shape, and the outer surfaces of the transverse movement block (234) and the longitudinal movement block (254) are fixedly connected with wear-resistant gaskets.

7. The nondestructive testing equipment for pressure vessel welds according to claim 5, characterized in that: The detection assembly (26) comprises a fixed plate (261), wherein the fixed plate (261) is welded and installed on a side of the longitudinal movement block (254) close to the clamping device (3), and both ends of the fixed plate (261) are fixedly connected with elastic members (262), and a detection end (263) is installed at the end of the elastic member (262), and the detection end (263) is electrically connected to the flaw detector (24) through a wire.

8. The nondestructive testing equipment for pressure vessel welds according to claim 7, characterized in that: The elastic member (262) comprises a sleeve frame (2621), wherein the sleeve frame (2621) is welded and installed at both ends of the fixed plate (261), a telescopic spring (2622) is welded and installed inside the sleeve frame (2621), a push plate (2623) is welded and installed at the end of the telescopic spring (2622), and a connecting shaft (2624) is fixedly connected to the end of the push plate (2623), and the detection end (263) is installed on one end of the connecting shaft (2624) close to the clamping device (3) by means of bolts.

9. The nondestructive testing equipment for pressure vessel welds according to claim 2, characterized in that: The clamping device (3) comprises a slide groove (31) and a square groove (32), wherein the slide groove (31) is arranged in a cross shape and is opened at the top of the top frame (4), the slide groove (31) is arranged on the inner side of the spur gear ring (213), and the square groove (32) is opened in the middle of the top of the top frame (4), and a power assembly (33) is arranged inside the square groove (32), and the inside of the slide groove (31) is rotatably connected to a power screw rod (34), and the outer surface of the power screw rod (34) is threadedly connected to a movable block (35), and the movable block (35) is movably connected to the inside of the slide groove (31), and a clamping plate (36) is welded and installed on the top of the movable block (35).

10. The non-destructive testing equipment for pressure vessel welds according to claim 9, characterized in that: The power assembly (33) comprises a fixing frame (331) and a bevel gear (332), wherein the fixing frame (331) is welded and installed at the middle of the bottom of the top frame (4), the bevel gear (332) is rotatably connected to each surface in the square groove (32), the outer side of the bevel gear (332) is fixedly connected to the inner end of the power screw rod (34), the bottom of the fixing frame (331) is fixedly provided with a fourth motor (333) by means of bolts, the output end of the fourth motor (333) is fixedly provided with a bevel gear ring (334) by means of bolts, and the bevel gear ring (334) is meshingly connected with the bevel gear (332).

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