Positioning device for pressure vessel inspection

Abstract

The utility model discloses a positioning device for pressure vessel detection relates to pressure vessel detection technical field. Including base, the top of base is fixed with vertical frame and is movably provided with arc support frame, the top of arc support frame is movably connected with a plurality of support rollers through connecting shaft. The utility model sets up positioning assembly, and it is through the plug -in axle extension into pressure vessel inside, utilizes motor drive pivot rotation, makes two -way screw rod drive two sliding blocks in movable cavity mutual close, when sliding block removes, extension block slides along second guide groove, and then pushes the top seat and positioning board to the plug -in axle outside and extends, until the arc surface of positioning board and pressure vessel inner wall closely, realize the positioning fixation from inside to pressure vessel, and this internal positioning mode effectively avoids the obstruction to pressure vessel outer wall, ensures that detection equipment can directly contact each area of container outer wall.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, specifically a positioning device for pressure vessel testing. Background Technology

[0002] After a pressure vessel is manufactured, it is often necessary to conduct tests to ensure its safe use and that it meets the required standards.

[0003] Chinese utility model patent, authorization announcement number CN222177387U, discloses an auxiliary positioning device for pressure vessel inspection. This auxiliary positioning device positions the pressure vessel by placing it between two arc-shaped plates from the top. A spring then causes the two arc-shaped plates to press against the outer surface of the pressure vessel, thereby positioning the pressure vessel. It can also accommodate pressure vessels of different sizes. By starting a motor in the forward direction, the motor drives a bidirectional lead screw to bring the two clamping plates closer together. When the clamping plates come into contact with the fixed block, they can bring the arc-shaped plates closer together and clamp the pressure vessel, thus further improving the positioning of the pressure vessel.

[0004] The existing positioning device for pressure vessel inspection uses two symmetrically arranged arc-shaped plates to clamp and fix the pressure vessel wall. In actual inspection, it is necessary to conduct a comprehensive inspection of the pressure vessel wall. However, because the arc-shaped plates obstruct the pressure vessel wall, the inspection equipment cannot directly contact the obstructed area. It is necessary to adjust the position of the pressure vessel or disassemble the positioning device multiple times to complete the comprehensive inspection. The operation process is cumbersome and affects the inspection efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for pressure vessel inspection, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for pressure vessel testing, comprising a base, wherein a vertical frame is fixed to the top of the base and an arc-shaped support frame is movably arranged thereon; The top of the arc-shaped support frame is movably connected to several support rollers via a connecting shaft. The support surface formed by the several support rollers is adapted to the curved surface of the pressure vessel shell. The top of the arc-shaped support frame is equipped with a shaft, a positioning component is provided on one side of the shaft, and a support member is provided on the other side of the shaft. The support member is supported by a vertical frame.

[0007] Preferably, the top of the base is provided with a plurality of first guide grooves, and the bottom of the arc-shaped support frame is fixed with a plurality of guide blocks that are equal in number and compatible with the number of first guide grooves. Several hydraulic cylinders are fixed at the top of the base, and the telescopic ends of the hydraulic cylinders are fixed to the side panel of the base.

[0008] Preferably, the support member includes a bearing, and the vertical frame is fixed to the outer ring of the bearing; A connecting bracket is fixed to the outer side of the inner ring of the bearing, and a driving component is provided at the bottom of the connecting bracket; The drive component rotates the connecting frame and the inner ring of the bearing.

[0009] Preferably, the positioning assembly includes an end plate fixed to the inner ring of the bearing, a motor fixed to one side of the end plate, and a shaft fixed to the other side of the end plate; The insert shaft has a movable cavity, and a rotating shaft is movably installed in the movable cavity. The output end of the motor is fixed to the end of the rotating shaft. Several second guide grooves connected to the movable cavity are opened on one side of the shaft. A positioning element is provided on one side of the rotating shaft.

[0010] Preferably, the positioning component includes a bidirectional screw rod disposed on a shaft body on one side of the rotating shaft, and two sliders are movably screwed onto the rod body of the bidirectional screw rod. Several extension blocks, equal in number and adapted to the second guide groove, are fixed on the outer side of the sliders. A top seat is provided between the two extension blocks, and a hinge plate is movably connected between the top seat and the slider. A positioning plate is fixed at the top of the top seat.

[0011] Preferably, the top of the positioning plate is provided with an arc-shaped surface, which matches the inner wall of the pressure vessel in the axial direction of the pressure vessel.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This positioning device for pressure vessel inspection includes a positioning assembly. It works by inserting a shaft into the pressure vessel and using a motor to drive a rotating shaft. This causes a bidirectional screw to move two sliders closer together within the movable cavity. As the sliders move, an extension block slides along a second guide groove, which in turn pushes the top seat and positioning plate outwards through a hinge plate until the arc-shaped surface of the positioning plate is tightly fitted against the inner wall of the pressure vessel. This achieves internal positioning and fixation of the pressure vessel. This internal positioning method effectively avoids obstructing the outer wall of the pressure vessel, ensuring that the inspection equipment can directly contact all areas of the vessel's outer wall without frequent adjustments to the vessel's position or disassembly of the positioning device. This significantly simplifies the operation process and improves inspection efficiency. Attached Figure Description

[0013] Figure 1 This is the left-side axial view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a half-sectional view of the positioning component of this utility model.

[0014] In the diagram: 1. Base; 101. First guide groove; 102. Hydraulic cylinder; 2. Arc-shaped support frame; 3. Support roller; 4. Insert shaft; 401. Second guide groove; 5. Positioning assembly; 501. End plate; 502. Rotating shaft; 503. Motor; 504. Slider; 505. Top seat; 506. Hinge plate; 507. Positioning plate; 6. Bearing; 7. Drive component; 8. Vertical frame. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] The positioning device in this solution is used to inspect barrel-shaped pressure vessels.

[0017] like Figures 1-3 As shown, this utility model provides a technical solution: a positioning device for pressure vessel testing, including a controller and a base 1. A vertical frame 8 is fixed on one side of the top of the base 1, and an arc-shaped support frame 2 is movably arranged on the other side of the top of the base 1 via a movable part. Specifically, the movable part includes two first guide grooves 101 opened on the top of the base 1. Two guide blocks are fixed at the bottom of the arc-shaped support frame 2, and the guide blocks are adapted to the first guide grooves 101. Two hydraulic cylinders 102 are fixed at the top of the base 1, and the telescopic ends of the hydraulic cylinders 102 are fixed to the side panel of the base 1. By extending the hydraulic cylinders 102, the arc-shaped support frame 2 can be moved along the length direction of the first guide grooves 101, thereby adjusting the distance between the arc-shaped support frame 2 and the vertical frame 8, so as to facilitate the placement of pressure vessels on the arc-shaped support frame 2.

[0018] Three equidistant support rollers 3 are movably connected to the top of the arc-shaped support frame 2 via a connecting shaft. The angle formed by the three support rollers 3 relative to the arc center of the arc-shaped support frame 2 is 60-90 degrees. The support surface formed by them is adapted to the curved surface of the pressure vessel shell. When the pressure vessel is placed on the support rollers 3, the support rollers 3 can provide stable support for the pressure vessel. At the same time, the pressure vessel can rotate on the support rollers 3, which facilitates the detection of different circumferential positions of the pressure vessel during the testing process.

[0019] like Figure 1 and Figure 2 As shown, a shaft 4 is provided at the top center of the arc-shaped support frame 2. A positioning component 5 is provided on one side of the shaft 4 near the edge of the arc-shaped support frame 2, and a support member is provided on the other side of the shaft 4. The support member is connected to the vertical frame 8.

[0020] Among them, such as Figure 3 As shown, the support includes a bearing 6. The top of the vertical frame 8 is fixed to the outer ring of the bearing 6 by bolts or welding. A connecting frame is fixed to the outer side of the inner ring of the bearing 6. A driving component 7 is provided at the bottom of the connecting frame. In this solution, the driving component 7 can be a servo motor. The output end of the servo motor is fixed to the connecting frame through a coupling. The servo motor can drive the connecting frame and the inner ring of the bearing 6 to rotate, thereby driving the components connected to the inner ring of the bearing 6 to rotate synchronously. Alternatively, the driving component 7 can be a first gear set on the side of the connecting frame. A second gear meshing with the first gear is set at the bottom of the first gear. The second gear is connected to the output end of the drive motor through a transmission shaft. The drive motor drives the second gear to rotate, thereby driving the first gear and the connecting frame to rotate, thus realizing the rotation control of the inner ring of the bearing.

[0021] like Figure 3 As shown, the positioning component 5 includes an end plate 501 fixed to the inner ring of the bearing 6. A motor 503 is fixed on the side of the end plate 501 away from the positioning component 5. The insertion shaft 4 is fixed on the other side of the end plate 501. A cylindrical movable cavity is opened in the insertion shaft 4. A rotating shaft 502 is movably arranged in the movable cavity. The output end of the motor 503 is fixedly connected to the end of the rotating shaft 502. Three second guide grooves 401 arranged in a circular array are opened on the shaft of the insertion shaft 4 near the positioning component 5. The second guide grooves 401 are connected to the movable cavity. A positioning element is provided on the shaft of the rotating shaft 502 located in the movable cavity.

[0022] The positioning component includes a bidirectional screw rod mounted on one side of the rotating shaft 502. Two sliders 504 are movably screwed onto the rod of the bidirectional screw rod. The two sliders 504 are symmetrically distributed about the midpoint of the bidirectional screw rod. Three extension blocks adapted to the second guide groove 401 are fixed to the outside of the sliders 504. The extension blocks extend to the outside of the insertion shaft 4 after passing through the second guide groove 401. A top seat 505 is provided between the two extension blocks. A hinge plate 506 is movably connected between the top seat 505 and the sliders 504. The two ends of the hinge plate 506 are movably connected to the top seat 505 and the sliders 504 respectively through pins. A positioning plate 507 is welded and fixed to the top of the top seat 505. The top of the positioning plate 507 is provided with an arc-shaped surface. This arc-shaped surface matches the inner wall of the pressure vessel in the axial direction of the pressure vessel. When the positioning plate 507 contacts the inner wall of the pressure vessel, it can increase the contact area and improve the positioning stability.

[0023] The controller is electrically connected to the hydraulic cylinder 102, the motor 503 and the drive component 7 via wires, and the controller can realize the automated control of each component.

[0024] In actual use, the hydraulic cylinder 102 is first extended by the controller, causing the arc-shaped support frame 2 to move away from the vertical frame 8, placing the pressure vessel on the support roller 3. Then, the hydraulic cylinder 102 is shortened, causing the arc-shaped support frame 2 to move closer to the vertical frame 8, inserting the insertion shaft 4 into the pressure vessel. Next, the motor 503 is started, driving the rotating shaft 502 to rotate. The rotating shaft 502 drives the bidirectional screw to rotate, causing the two sliders 504 to move closer to each other. The sliders 504 push the top seat 505 upward through the hinge plate 506, and the top seat 505 drives the positioning plate 507 upward. The pressure vessel is moved until the arc-shaped surface of the positioning plate 507 is in close contact with the inner wall of the pressure vessel (the rotation speed of the motor 503 and the upward movement height of the top seat 505 are determined by those skilled in the art based on the inner diameter of the pressure vessel), thus achieving axial positioning of the pressure vessel. Finally, according to the testing requirements, the drive component 7 is started by the controller. The drive component 7 drives the connecting frame, the inner ring of the bearing 6, the end plate 501, the insert shaft 4, and the positioning component 5 to rotate synchronously, thereby driving the pressure vessel to rotate on the support roller 3. The testing device can detect different positions of the pressure vessel in the circumference without having to adjust the position of the pressure vessel multiple times, effectively improving the testing efficiency.

[0025] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. All standard parts used can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] 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, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A positioning device for pressure vessel inspection, comprising a base (1), characterized in that: The top of the base (1) is fixed with a vertical frame (8) and movably provided with an arc-shaped support frame (2). The top of the arc-shaped support frame (2) is movably connected to several support rollers (3) via a connecting shaft. The support surface formed by the several support rollers (3) is adapted to the curved surface of the pressure vessel shell. The top of the arc-shaped support frame (2) is provided with a shaft (4), a positioning component (5) is provided on one side of the shaft (4), and a support member is provided on the other side of the shaft (4). The support member is supported by a vertical frame (8).

2. The positioning device for pressure vessel inspection according to claim 1, characterized in that: The base (1) has several first guide grooves (101) on its top, and the bottom of the arc-shaped support frame (2) has several guide blocks that are equal in number and compatible with the first guide grooves (101). Several hydraulic cylinders (102) are fixed at the top of the base (1), and the telescopic ends of the hydraulic cylinders (102) are fixed to the side panel of the base (1).

3. The positioning device for pressure vessel inspection according to claim 1, characterized in that: The support includes a bearing (6), and the vertical frame (8) is fixed to the outer ring of the bearing (6); A connecting frame is fixed on the outer side of the inner ring of the bearing (6), and a driving component (7) is provided at the bottom of the connecting frame. The drive component (7) drives the connecting frame and the inner ring of the bearing (6) to rotate.

4. A positioning device for pressure vessel inspection according to claim 3, characterized in that: The positioning component (5) includes an end plate (501) fixed to the inner ring of the bearing (6), a motor (503) fixed on one side of the end plate (501), and a plug shaft (4) fixed on the other side of the end plate (501). The insert shaft (4) has a movable cavity, and a rotating shaft (502) is movably installed in the movable cavity. The output end of the motor (503) is fixed to the end of the rotating shaft (502). Several second guide grooves (401) connected to the movable cavity are provided on one side of the shaft body of the insert shaft (4). A positioning element is provided on one side of the rotating shaft (502).

5. A positioning device for pressure vessel inspection according to claim 4, characterized in that: The positioning component includes a bidirectional screw rod disposed on one side of the shaft (502). Two sliders (504) are movably screwed onto the rod of the bidirectional screw rod. Several extension blocks, equal in number and compatible with the second guide groove (401), are fixed on the outer side of the sliders (504). A top seat (505) is provided between the two extension blocks, and a hinge plate (506) is movably connected between the top seat (505) and the slider (504). The top of the top seat (505) is fixed with a positioning plate (507).

6. A positioning device for pressure vessel inspection according to claim 5, characterized in that: The top of the positioning plate (507) is provided with an arc-shaped surface, which matches the inner wall of the pressure vessel in the axial direction of the pressure vessel.

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