Pressure vessel weld non-destructive testing apparatus

Abstract

The utility model discloses pressure vessel weld nondestructive testing equipment belongs to pressure vessel weld detection field. Pressure vessel weld nondestructive testing equipment, including base, the middle of base upper end is provided with the bottom plate, the both sides of bottom plate upper end all transverse even distribution has the second rotary roller of through support swing joint, the both sides of base upper end all mirror image setting has the side plate of radian. The utility model solves the problem of low efficiency in the process of placing and fixing in the detection of the existing weld detection equipment, the utility model drives the position of pressure vessel through the rotation of second rotary roller, and in the process of needing to overturn pressure vessel, can be driven by corresponding motor side plate to rotate to pressure vessel, can make pressure vessel rotate with connecting shaft as center, can adjust the position of pressure vessel to be detected flexibly, makes the position to be detected close to the position of ultrasonic detector for detection efficiently.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel weld inspection, specifically to a non-destructive testing device for pressure vessel welds. Background Technology

[0002] Non-destructive testing equipment for pressure vessel welds is a specialized instrument for inspecting the quality of pressure vessel welds. It uses ultrasonic technology in a non-destructive manner to detect potential defects inside the weld. This equipment can accurately identify problems such as cracks, slag inclusions, and porosity in the weld, ensuring the safety and reliability of the vessel. In particular, for weld repair locations, the non-destructive testing equipment uses ultrasonic detectors for detailed inspection, effectively assessing the repair effect and avoiding potential safety hazards.

[0003] Chinese patent CN222939055U discloses a weld inspection device, including a base with support frames on both the left and right sides of the top of the base. Each support frame is equipped with a toothed plate, and each toothed plate has a locking block that engages with it. A top plate is rotatably connected to the locking blocks. A steel ring is clamped and centered by two arc-shaped plates, preventing the steel ring from slipping out. The arc-shaped plates are hinged to the center of the top plate, allowing the arc-shaped plates to rotate at an angle supported by the top plate. This ensures better contact with the outer wall of the steel ring during lifting. The top plate is supported on the toothed plates by the locking blocks and a buffer assembly. The locking blocks engage with the toothed plates, forming a movable triangle with the buffer assembly, toothed plates, and top plate. This allows the tilt of the top plate to be changed, and the position of the locking blocks on the toothed plates to be adjusted according to actual stress conditions, resulting in more stable overall stress distribution. The buffer assembly, acting as a support, significantly reduces the impact force.

[0004] During the inspection process, the aforementioned patented weld inspection equipment requires different inspection positions for different pressure vessels, necessitating placement of the pressure vessels in different orientations. This results in low efficiency and poor adaptability during placement and fixing, affecting the speed of the equipment for non-destructive testing of pressure vessel welds. Utility Model Content

[0005] The purpose of this invention is to provide a non-destructive testing device for pressure vessel welds. The device adjusts the position of the pressure vessel laterally by rotating the second rotating roller. When the pressure vessel needs to be flipped, the corresponding motor can drive the side plate to rotate toward the pressure vessel, allowing the pressure vessel to rotate around the connecting shaft. This allows for flexible adjustment of the pressure vessel to the position to be tested, making the position to be tested efficiently close to the ultrasonic detector used for testing, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-destructive testing device for pressure vessel welds, comprising a base, a base plate disposed in the middle of the upper end of the base, and second rotating rollers rotatably connected by supports evenly distributed laterally on both sides of the upper end of the base plate. Two side plates with arcuate curvature are mirrored on both sides of the upper end of the base, and five sets of first rotating rollers are laterally disposed on the side of each side plate facing the upper end of the base plate. The side plates are rotatably connected to the base via connecting shafts. Motors are disposed at the center of the first rotating rollers at both the front and rear ends inside the base and at the center of the second rotating rollers at both the front and rear ends inside the base plate. The pressure vessel placed on the upper end can be supported by the second rotating rollers, and the rotation of the second rotating rollers can drive the pressure vessel to move laterally, facilitating the adjustment of the pressure vessel and the welding position on the surface of the pressure vessel.

[0007] Preferably, a set of three first rotating rollers is provided. The three first rotating rollers are distributed around the side plate with the center as the center, and the center of the first rotating roller is rotatably connected to the side plate. The first rotating roller can rotate with the side plate when it rotates inside the side plate and can contact the outer wall of the pressure vessel. The rotation of the first rotating roller can clamp and drive the pressure vessel to flip.

[0008] Preferably, guide rods are provided at the four corners of the base plate, and the guide rods pass through the base plate and are slidably connected to the four corners of the base plate. A second hydraulic rod is provided at the middle position of the lower end of the base plate. With the support of the guide rods, the extension of the second hydraulic rod can drive the base plate to make longitudinal adjustments. It can also retract when rotating the pressure vessel to avoid the protruding second rotating roller from affecting the rotation of the pressure vessel.

[0009] Preferably, a first hydraulic rod is fixed to each of the four corners of the upper end of the base by bolts. The first hydraulic rod is provided with a second roller facing the side plate, and the second roller is fixedly connected to the extension position of the first hydraulic rod by bolts. The extension of the first hydraulic rod can support the side plate after the side plate is flipped, reducing the pressure required at the connecting shaft position.

[0010] Preferably, strip-shaped transmission rods are provided at both the front and rear ends of the base, and the outer sides of the transmission rods are slidably connected to the front and rear ends of the base. A movable frame is provided on one side of each of the two transmission rods, and an ultrasonic detector is provided at the lower end of the movable frame. After being supported by the transmission rods, the movable frame can be moved laterally. The lateral movement of the movable frame can make the ultrasonic detector face the pressure vessel at the lower end. After the movable frame slides laterally from the base, it can be exposed at the upper end of the base, which can facilitate the installation and retraction of the pressure vessel.

[0011] Preferably, three first rollers are evenly distributed laterally at the lower end of the transmission rod. The first rollers pre-installed at the lower end of the transmission rod enable efficient lateral movement of the movable frame and allow the ultrasonic detector to move efficiently.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] After the pressure vessel is placed, the position of the pressure vessel can be adjusted laterally by the rotation of the second rotating roller. When it is necessary to flip the pressure vessel, the corresponding motor can drive the side plate to rotate towards the pressure vessel, so that the pressure vessel can rotate around the connecting shaft. The rotation can clamp and fix the pressure vessel. During the clamping process, the angle of the pressure vessel can be adjusted by the rotation of the first rotating roller. The welding position of the pressure vessel can be flipped and adjusted laterally, which can facilitate the pressure vessel to be close to the ultrasonic detector at the top. It can adapt to the detection requirements of different welding machine positions, and can be adapted to side plates of different sizes by clamping. The efficient angle adjustment can improve the detection efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 Enlarged view of a portion of region A in the middle;

[0016] Figure 3 For the present utility model Figure 1 Enlarged view of a portion of region B in the middle;

[0017] Figure 4 This is a sectional view showing the positional relationship of the second hydraulic rod of this utility model;

[0018] Figure 5 This is a cross-sectional view showing the positional relationship of the second roller in this utility model;

[0019] Figure 6 This is a schematic diagram showing the positional relationship of the ultrasonic detector of this utility model;

[0020] Figure 7 For the present utility model Figure 6 Enlarged view of a portion of region C in the middle;

[0021] Figure 8 This is a schematic diagram of the pressure vessel clamping trajectory of this utility model.

[0022] In the diagram: 1. Base; 2. Side plate; 3. Movable frame; 4. Transmission rod; 5. First roller; 6. First rotating roller; 7. Pressure vessel; 8. First hydraulic rod; 9. Base plate; 10. Guide rod; 11. Bracket; 12. Second rotating roller; 13. Restriction strip; 14. Electric telescopic rod; 15. Second hydraulic rod; 16. Second roller; 17. Ultrasonic detector; 18. Connecting shaft. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] like Figure 1 , Figure 2 and Figure 8 As shown, the pressure vessel weld non-destructive testing equipment of this embodiment includes a base 1, a base plate 9 is provided in the middle of the upper end of the base 1, and second rotating rollers 12 are evenly distributed laterally on both sides of the upper end of the base plate 9. A bracket 11 is provided between the second rotating rollers 12 and the base plate 9. The bracket 11 is rotatably connected to the center position of the base plate 9 and the second rotating rollers 12 respectively. When placing the pressure vessel 7 and performing subsequent testing of the welding position on the surface of the pressure vessel 7, the pressure vessel 7 can be directly placed on the upper end of the second rotating rollers 12 on both sides. The second rotating rollers 12 on both sides can support the pressure vessel 7 at the upper end. The two second rotating rollers 12 can be adapted to pressure vessels 7 of different sizes.

[0025] Furthermore, side plates 2 are mirrored on both sides of the upper end of the base 1. Both side plates 2 are curved. The curved side plates 2 can easily adapt to pressure vessels 7 of different sizes. During the placement and testing of the pressure vessel 7, it can be clamped by rotating the side plates 2.

[0026] It is worth mentioning that, in order to flip the pressure vessel 7 during the clamping process, the two side plates 2 are respectively provided with a first rotating roller 6 on the side facing the upper end of the bottom plate 9. Five sets of first rotating rollers 6 are arranged horizontally inside the side plates 2, with three first rotating rollers 6 in each set. The three first rotating rollers 6 are distributed around the side plate 2 with the center of the circle, and the center of the first rotating roller 6 is rotatably connected to the side plate 2. During the process of the side plate 2 rotating and clamping the pressure vessel 7, the first rotating roller 6 can come into contact with the pressure vessel 7. After the pressure vessel 7 comes into contact with the first rotating roller 6, the first rotating roller 6 can drive the clamped pressure vessel 7 to flip after rotating.

[0027] In order to accommodate the angle at which the pressure vessel 7 is tilted by the drive of the first rotating roller 6, such as Figure 4As shown, guide rods 10 are provided at the four corners of the base plate 9, and the guide rods 10 pass through the base plate 9 and are slidably connected to the four corners of the base plate 9. A second hydraulic rod 15 is provided at the middle of the lower end of the base plate 9, and the two ends of the second hydraulic rod 15 are fixedly connected to the base plate 9 and the base 1 respectively by bolts. The horizontal height of the base plate 9 can be adjusted longitudinally by the extension and retraction of the second hydraulic rod 15. The second rotating roller 12 can be retracted into the base 1 without affecting the rotation of the pressure vessel 7 or the flipping of the welding position.

[0028] Furthermore, motors are installed at the center of the first rotating roller 6 at both the front and rear ends inside the base 1 and the second rotating roller 12 at both the front and rear ends inside the base plate 9. The output of the motors can drive the first rotating roller 6 and the second rotating roller 12 to rotate respectively, which can stably adjust the orientation and angle of the pressure vessel 7.

[0029] To improve the load-bearing capacity and stability of side plate 2 after it is flipped over, first hydraulic rods 8 are installed at the four corners of the upper end of the base 1. The outer walls of the first hydraulic rods 8 are fixedly connected to the base 1 with bolts. Figure 5 As shown, the first hydraulic rod 8 is provided with a second roller 16 facing the side plate 2, and the second roller 16 is fixedly connected to the extension and retraction position of the first hydraulic rod 8 by bolts. The side plate 2 and the base 1 are rotatably connected by a connecting shaft 18. A motor is provided at one end of the connecting shaft 18. After the motor outputs to the connecting shaft 18, it can drive the side plate 2 to flip, so that the side plate 2 can flip and move towards the pressure vessel 7. The extension and retraction of the first hydraulic rod 8 can push the second roller 16, so that the second roller 16 can contact the side plate 2, which can provide stability for the side plate 2 to flip and clamp the pressure vessel 7.

[0030] The power source and control valve required for the extension and retraction of the first hydraulic rod 8 and the second hydraulic rod 15 are conventional technologies, and therefore are not described in detail in this application. When the first hydraulic rod 8 and the second hydraulic rod 15 need to be activated, the power source generates high-pressure oil, the control valve receives the command, and precisely guides the flow direction and return path of the high-pressure oil. The high-pressure oil enters the corresponding chamber of the hydraulic extension rod, pushing the piston rod to extend or retract. The oil in the other chamber of the cylinder flows back to the oil tank through the control valve. This application does not make any additional improvements to the activation method of the first hydraulic rod 8 and the second hydraulic rod 15, and therefore is not described in detail.

[0031] During the inspection of the welding positions on the surface of pressure vessel 7, strip-shaped transmission rods 4 are provided at both the front and rear ends of the base 1. The outer sides of the transmission rods 4 are slidably connected to the front and rear ends of the base 1. A movable frame 3 is provided on one side of each of the two transmission rods 4. Figure 6As shown, an ultrasonic detector 17 is provided at the lower end of the exterior of the movable frame 3, and a threaded rod is provided through the upper end of the interior of the ultrasonic detector 17. By rotating the threaded rod, the ultrasonic detector 17 can approach the welding position and perform detection while adjusting the welding position on the surface of the pressure vessel 7.

[0032] Referring to the Chinese patent for explosion-proof piezoelectric ultrasonic detector with announcement number CN108225686B, the ultrasonic detector 17 is described in detail in that application. In this application, no additional improvements are made to the ultrasonic detector 17, and therefore, the ultrasonic detector 17 is not described in detail in this application.

[0033] Furthermore, such as Figure 7 As shown, three first rollers 5 are evenly distributed laterally at the lower end of the transmission rod 4. The three first rollers 5 are rotatably connected to the inside of the transmission rod 4. When it is necessary to remove the pressure vessel 7, the movable frame 3 can be pulled laterally and moved laterally while the first rollers 5 are rotating, exposing the upper end between the two side plates 2, and at the same time, the upper end of the bottom plate 9 can be exposed.

[0034] It is worth mentioning that, such as Figure 3 As shown, an electric telescopic rod 14 is vertically arranged at the lower end of the base 1 facing the transmission rod 4. A limiting strip 13 is arranged at the position of the transmission rod 4 facing the electric telescopic rod 14. The telescopic position of the electric telescopic rod 14 passes through the limiting strip 13 and is slidably connected with the through position of the limiting strip 13. After the movable frame 3 completely covers the upper end of the pressure vessel 7, the transmission rod 4 can be fixed by the electric telescopic rod 14 passing through the limiting strip 13, which can fix the position of the ultrasonic detector 17.

[0035] Working principle: When using the device to inspect the weld repair position on the surface of the pressure vessel 7 by the ultrasonic detector 17, the pressure vessel 7 is placed on the upper end of the second rotating rollers 12 on both sides of the upper end of the base plate 9. First, the position of the ultrasonic detector 17 can be adjusted laterally by rotating the bolts passing through its interior. At the same time, the rotation of the second rotating rollers 12 can laterally drive the pressure vessel 7 placed on the upper end to move laterally, so that the weld position on the surface of the pressure vessel 7 is located directly below the ultrasonic detector 17. When it is necessary to rotate the pressure vessel 7 and clamp it at the same time, the side plate 2, through the output of the front motor, causes the side plate 2 to move in a continuous motion. The connecting shaft 18 rotates in a circle toward the pressure vessel 7. The side plates 2 on both sides of the pressure vessel 7 move toward the pressure vessel 7 and clamp the pressure vessel 7. The side plates 2 can simultaneously drive the first rotating roller 6 to contact the side of the pressure vessel 7. When the pressure vessel 7 needs to be rotated, the retraction of the second hydraulic rod 15 can longitudinally drive the base plate 9 and the upper second rotating roller 12 to retract into the base 1. According to the required rotation direction of the pressure vessel 7, the motor corresponding to the first rotating roller 6 is started. The output of the motor can drive the pressure vessel 7 to rotate through the first rotating roller 6 until the welding position on the surface of the pressure vessel 7 is close to the lower end of the ultrasonic detector 17.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for non-destructive testing of welds of pressure vessels, comprising a base (1), characterised in that, The middle of the upper end of the base (1) is provided with a bottom plate (9), the upper end of the bottom plate (9) is uniformly distributed with second rotating rollers (12) rotatingly connected through supports (11) on both sides, the upper end of the base (1) is mirror-imaged provided with side plates (2) with curvature on both sides, five groups of first rotating rollers (6) are transversely arranged on one side of the upper end of each of the two side plates (2) towards the bottom plate (9), the side plate (2) and the base (1) are rotatingly connected through a connecting shaft (18), and the centers of the first rotating rollers (6) at the front and rear ends inside the base (1) and the second rotating rollers (12) at the front and rear ends inside the bottom plate (9) are provided with motors.

2. The pressure vessel weld non-destructive inspection apparatus of claim 1, wherein, One group of the first rotating rollers (6) is provided with three first rotating rollers (6) which are distributed around the center of the side plate (2), and the center of the first rotating roller (6) is rotatingly connected with the side plate (2).

3. The pressure vessel weld non-destructive inspection apparatus of claim 1, wherein, The four corner positions inside the bottom plate (9) are provided with guide rods (10) which penetrate the bottom plate (9) and are slidingly connected with the four corner positions of the bottom plate (9), and the middle position of the lower end of the bottom plate (9) is provided with a second hydraulic rod (15).

4. The pressure vessel weld non-destructive testing apparatus of claim 3, wherein, The four corner positions of the upper end of the base (1) are fixedly provided with first hydraulic rods (8) through bolts, the second rollers (16) are arranged on the first hydraulic rods (8) towards the side plates (2), and the second rollers (16) are fixedly connected with the extension positions of the first hydraulic rods (8) through bolts.

5. The pressure vessel weld non-destructive testing apparatus of claim 4, wherein, The front and rear ends outside the base (1) are provided with strip-shaped transmission rods (4), the outer portions of the transmission rods (4) are slidingly connected with the front and rear ends outside the base (1), one side of each of the two transmission rods (4) is provided with a movable frame (3), and the lower end of the outer portion of the movable frame (3) is provided with an ultrasonic detector (17).

6. The pressure vessel weld non-destructive testing apparatus of claim 5, wherein, The lower end of the outer portion of the transmission rod (4) is transversely and uniformly provided with three first rollers (5).

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