A kind of radiographic testing equipment for gas tank weld detection

Abstract

A kind of radiographic testing equipment for gas storage tank weld detection, it is related to the technical field of testing equipment, including base, positioning mechanism is symmetrically installed on the two sides above the base, chuck is rotatably installed in the inside of positioning mechanism, four clamping jaws are arranged in annular on the side of chuck, and the limiting thread of the end surface of clamping jaw is engaged with the plane thread of chuck contact end surface, four tank adjusting mechanisms are arranged in annular in the inner hole of positioning mechanism, and tank adjusting mechanism is limited in sliding with the limiting sliding slot on positioning mechanism, lifting adjusting device is arranged on the rear side of base upper end surface, mounting bracket is fixedly installed on the front side of lifting adjusting device upper end surface, and radiographic transmitter is installed on the bottom of mounting bracket, the problem that testing device cannot be flexibly adjusted according to the diameter of gas storage tank is solved.

Description

Technical Field

[0001] This utility model relates to the field of flaw detection equipment technology, specifically a radiographic flaw detection device for inspecting weld seams in gas storage tanks. Background Technology

[0002] Radiographic testing utilizes the high penetrating power of X-rays or gamma rays, which can penetrate materials that ordinary light cannot. When the rays penetrate the object being inspected, they interact with the atoms in the material, causing a decrease in the intensity of the rays. Because the object may contain defects (such as cracks, pores, bubbles, looseness, or misalignment), these defects cause the absorption and scattering of rays during penetration to differ from normal areas. Therefore, by detecting the change in intensity after the rays penetrate, it is possible to infer the presence, size, and location of defects within the object.

[0003] For example, the Chinese authorized patent CN217156355U, entitled "An X-ray Flaw Detection Device for Non-destructive Testing of Tank Welds," includes a flaw detector body, a movable base, and an orientation adjustment mechanism. The flaw detector body is mounted on top of the movable base via a bearing seat. The orientation adjustment mechanism includes: a gear fitted on the flaw detector body; a locking assembly; a cylindrical shell coaxially fixed to the end of the flaw detector body; a first mounting plate; a lever, the first end of which passes through the first mounting plate and extends to the outside of the cylindrical shell; and a first return spring. The X-ray flaw detection device for non-destructive testing of tank welds provided by this utility model, when in use, rotates the flaw detector body so that the cylindrical shell rotates against the surface of the tank. When the first end of the lever is pressed into the inside of the cylindrical shell, the tangential surface between the cylindrical shell and the tank will be perpendicular to the central axis of the lever and parallel to the detection window on the flaw detector body. This ensures that the detection window on the flaw detector body is aligned with the circumferential weld in the direction parallel to the tangential surface between the cylindrical shell and the tank.

[0004] In practical use, the aforementioned existing technology cannot flexibly adjust the flaw detection device according to the diameter of the gas storage tank, which easily leads to unstable installation and affects the accuracy of subsequent flaw detection. Therefore, it does not meet the current needs. In response, we propose a radiographic flaw detection device for the inspection of weld seams in gas storage tanks. Utility Model Content

[0005] The purpose of this invention is to provide a radiographic testing device for inspecting weld seams in gas storage tanks, thereby solving the problem mentioned in the background art that the testing device cannot be flexibly adjusted according to the diameter of the gas storage tank.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a radiographic testing device for inspecting weld seams of gas storage tanks, comprising a base, positioning mechanisms symmetrically installed on both sides above the base, a chuck rotatably mounted inside the positioning mechanism, four ring-shaped jaws on one side of the chuck, and the limiting threads on one end face of the jaws engaging with the planar threads on the contact end face of the chuck, four ring-shaped tank adjustment mechanisms in the inner hole of the positioning mechanism, and the tank adjustment mechanisms slidingly limiting the positioning mechanism with the limiting grooves on the positioning mechanism, a lifting adjustment device provided on the rear side of the upper end face of the base, a mounting frame fixedly mounted on the front side of the upper end face of the lifting adjustment device, and a radiographic emitter mounted on the bottom of the mounting frame.

[0007] Preferably, the tank adjustment mechanism includes a fixed base, one end of which is connected to the chuck via a fixed frame. A rotating base is mounted on the outside of the fixed base and is rotatably connected to the fixed base. A servo motor is built inside the fixed base, and the output shaft of the servo motor is fixed to the rotating base. An mounting base is fixedly mounted above the rotating base. An adjusting wheel is rotatably mounted inside the mounting base. A servo motor is built inside the mounting base, and the output shaft of the servo motor is fixed to the shaft at one end of the adjusting wheel.

[0008] Preferably, a first motor is fixedly installed at the front end of the positioning mechanism, the outer ring of the chuck is provided with a toothed ring, and the output shaft of the first motor meshes with the toothed ring of the outer ring of the chuck through a bevel gear.

[0009] Preferably, a dual-axis motor is fixedly installed in the middle position inside the base, and a spacing adjustment groove is provided on both sides of the upper end of the base. A first screw is rotatably installed inside each of the spacing adjustment grooves. The external threads of the two first screws are opposite to each other, and the output shaft of the dual-axis motor is fixed to one end of the first screw. A first slider is installed on the outside of the first screw, and the upper end of the first slider is fixed to the positioning mechanism.

[0010] Preferably, a displacement adjustment groove is provided on the rear side of the upper end face of the base, a second screw is rotatably installed inside the displacement adjustment groove, a second slider is threadedly connected to the outside of the second screw, and the upper end of the second slider is fixed to the bottom of the lifting adjustment device, and a second motor is installed at one end of the second screw.

[0011] Preferably, the gas storage tank is installed in the inner hole of the positioning mechanism, and its outer wall is in contact with the surface of the adjusting wheel.

[0012] Preferably, the base contains a flaw detector body, and the X-ray emitter is connected to the flaw detector body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features two positioning mechanisms. During installation, the gas tank preferentially enters the positioning mechanism. By activating the first motor, the output shaft, driven by a bevel gear, rotates the chuck. Since the limiting thread on one end face of the chuck engages with the planar thread on the contact end face of the chuck, the rotation of the planar thread causes the chuck to move along the direction of the limiting groove. This brings the adjusting wheel on the tank adjustment mechanism into contact with the surface of the tank. At this point, the adjusting wheel is restricted from rotating by the self-locking motor on one side of the mounting base, thus keeping the gas tank fixed in that position. This structure can be freely adjusted according to the diameter of the gas tank, ensuring that the gas tank is stably positioned in the positioning mechanism, providing a prerequisite for subsequent accurate flaw detection.

[0015] 2. This utility model features a tank adjustment mechanism, which consists of a fixed base, a rotating base, a mounting base, and an adjusting wheel. By activating the motor inside the fixed base, its output shaft can drive the rotating base to switch between zero and 90 degrees. When the adjusting wheel is on the same plane as the positioning mechanism, activating the servo motor on one side of the mounting base can drive the adjusting wheel to rotate, thereby causing the gas storage tank to rotate and switching the flaw detection angle position. When the plane of the adjusting wheel is perpendicular to the positioning mechanism, activating the servo motor on one side of the mounting base can drive the adjusting wheel to rotate, thereby causing the gas storage tank to perform horizontal displacement adjustment and switching the weld position. This tank adjustment mechanism further improves the flexibility of the flaw detection equipment, thereby increasing the detection efficiency of the gas storage tank.

[0016] 3. This utility model features a spacing adjustment groove. By activating the dual-axis motor inside the base, the output shafts at both ends drive the first screw to rotate. Under the thread friction with the first slider, the rotational motion is converted into linear motion. Simultaneously, the threads on the two first screws are opposite to each other, forming two opposing movements of the positioning mechanism. This allows for flexible adjustment according to the length of the gas storage tank. The spacing adjustment groove also allows the second motor to rotate the second screw. Similarly, the second slider drives the X-ray emitter to move horizontally above the gas storage tank. Combined with the lifting adjustment device, the height of the X-ray emitter is adjusted to ensure it is in the optimal position for inspecting the weld seams of the gas storage tank, thus improving the accuracy of flaw detection. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a perspective view of the positioning mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the base of this utility model;

[0020] Figure 4This is a schematic diagram of the internal structure of the positioning mechanism of this utility model;

[0021] In the diagram: 1. Base; 2. Positioning mechanism; 3. Lifting and adjusting device; 4. Mounting bracket; 5. X-ray emitter; 6. First motor; 7. Limiting slide groove; 8. Tank body adjusting mechanism; 9. Spacing adjusting groove; 10. First screw; 11. Displacement adjusting groove; 12. Fixed seat; 13. Rotating seat; 14. Mounting seat; 15. Adjusting wheel; 16. Dual-axis motor; 17. First slider; 18. Second screw; 19. Second slider; 20. Second motor; 21. Chuck; 22. Claw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a radiographic testing device for inspecting weld seams of gas storage tanks, comprising a base 1, with positioning mechanisms 2 symmetrically installed on both sides above the base 1, a chuck 21 rotatably installed inside the positioning mechanism 2, four ring-shaped jaws 22 on one side of the chuck 21, and the limiting threads on one end face of the jaws 22 meshing with the planar threads on the contact end face of the chuck 21, four ring-shaped tank adjustment mechanisms 8 in the inner hole of the positioning mechanism 2, and the tank adjustment mechanisms 8 slidingly limiting the limiting grooves 7 on the positioning mechanism 2, a first motor 6 fixedly installed at the front end of the positioning mechanism 2, a toothed ring on the outer ring of the chuck 21, and the output shaft of the first motor 6 meshing with the toothed ring on the outer ring of the chuck 21 through a bevel gear, the gas storage tank being installed in the inner hole of the positioning mechanism 2, and its outer wall contacting the surface of the adjusting wheel 15.

[0024] During use, the gas tank is first installed into the positioning mechanism 2. By turning on the first motor 6, the output shaft drives the chuck 21 to rotate under the transmission of the bevel gear. Since the limiting thread on one end face of the chuck 22 meshes with the flat thread on the contact end face of the chuck 21, the rotation of the flat thread drives the chuck 22 to move along the direction of the limiting slide groove 7, thereby causing the adjusting wheel 15 on the tank body adjusting mechanism 8 to contact the surface of the tank body. At this time, the adjusting wheel 15 is restricted by the self-locking motor on one side of the mounting base 14 and cannot rotate, thus keeping the gas tank fixed in this position.

[0025] Please see Figure 2The tank adjustment mechanism 8 includes a fixed base 12, one end of which is connected to the claw 22 via a fixed frame. A rotating base 13 is mounted on the outside of the fixed base 12 and is rotatably connected to the fixed base 12. A servo motor is built inside the fixed base 12, and the output shaft of the servo motor is fixed to the rotating base 13. An mounting base 14 is fixedly mounted on the top of the rotating base 13. An adjusting wheel 15 is rotatably mounted inside the mounting base 14. A servo motor is built inside the mounting base 14, and the output shaft of the servo motor is fixed to the shaft at one end of the adjusting wheel 15.

[0026] In use, by turning on the motor inside the fixed base 12, its output shaft can drive the rotating base 13 to switch between zero and ninety degrees. When the adjusting wheel 15 and the positioning mechanism 2 are on the same plane, by turning on the servo motor on one side of the mounting base 14, its output shaft can drive the adjusting wheel 15 to rotate, thereby driving the air tank to rotate and realizing the switching of the flaw detection angle position. When the plane where the adjusting wheel 15 is located is perpendicular to the positioning mechanism, by turning on the servo motor on one side of the mounting base 14, its output shaft can drive the adjusting wheel 15 to rotate, thereby driving the air tank to perform horizontal displacement adjustment and realizing the switching of the weld position.

[0027] Please see Figure 1 A lifting adjustment device 3 is provided on the rear side of the upper end face of the base 1. A mounting bracket 4 is fixedly installed on the front side of the upper end face of the lifting adjustment device 3. A radiation emitter 5 is installed at the bottom of the mounting bracket 4. The base 1 contains the flaw detector body, and the radiation emitter 5 is connected to the flaw detector body.

[0028] Please see Figure 1 and Figure 3 A dual-axis motor 16 is fixedly installed in the middle of the base 1. Both sides of the upper end of the base 1 are provided with spacing adjustment grooves 9. A first screw 10 is rotatably installed inside each spacing adjustment groove 9. The external threads of the two first screws 10 are opposite to each other, and the output shafts of the dual-axis motor 16 are fixed to one end of the first screw 10 respectively. A first slider 17 is installed on the outside of the first screw 10, and the upper end of the first slider 17 is fixed to the positioning mechanism 2. By turning on the dual-axis motor 16 inside the base, the output shafts at both ends drive the first screws to rotate. Under the thread friction with the first slider 17, the rotational motion is converted into linear motion. At the same time, the threads on the two first screws are opposite to each other, forming the opposite movement of the two positioning mechanisms 2, so that the length of the gas tank can be flexibly adjusted.

[0029] Please see Figure 1 and Figure 3A displacement adjustment groove 11 is provided on the rear side of the upper end face of the base 1. A second screw 18 is rotatably installed inside the displacement adjustment groove 11. A second slider 19 is threadedly connected to the outside of the second screw 18, and the upper end of the second slider 19 is fixed to the bottom of the lifting adjustment device 3. A second motor 20 is installed at one end of the second screw 18. By turning on the second motor 20, the second screw 18 is driven to rotate. Similarly, the second slider 19 drives the X-ray emitter 5 to move horizontally above the gas storage tank. The lifting adjustment device 3 is used to adjust the height of the X-ray emitter 5 to ensure that it is in the optimal position when inspecting the weld of the gas storage tank.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A radiographic testing device for inspecting weld seams of gas storage tanks, comprising a base (1), characterized in that: Positioning mechanisms (2) are symmetrically installed on both sides above the base (1). A chuck (21) is rotatably installed inside the positioning mechanism (2). Four ring-shaped claws (22) are provided on one side of the chuck (21). The limiting thread on one end face of the claw (22) meshes with the planar thread on the contact end face of the chuck (21). The inner hole of the positioning mechanism (2) is provided with four ring-shaped tank adjustment mechanisms (8). The tank adjustment mechanism (8) slides and limits with the limiting groove (7) on the positioning mechanism (2). A lifting adjustment device (3) is provided on the rear side of the upper end face of the base (1). A mounting bracket (4) is fixedly installed on the front side of the upper end face of the lifting adjustment device (3). A radiation emitter (5) is installed at the bottom of the mounting bracket (4).

2. The radiographic testing equipment for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: The tank adjustment mechanism (8) includes a fixed seat (12), and one end of the fixed seat (12) is connected to the claw (22) through a fixed frame. A rotating seat (13) is installed on the outside of the fixed seat (12), and the rotating seat (13) is rotatably connected to the fixed seat (12). A servo motor is built inside the fixed seat (12), and the output shaft of the servo motor is fixed to the rotating seat (13). An mounting seat (14) is fixedly installed above the rotating seat (13). An adjusting wheel (15) is rotatably installed inside the mounting seat (14). A servo motor is built inside the mounting seat (14), and the output shaft of the servo motor is fixed to the shaft at one end of the adjusting wheel (15).

3. The radiographic testing equipment for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: The positioning mechanism (2) is fixedly mounted with a first motor (6) at its front end. The outer ring of the chuck (21) is provided with a toothed ring, and the output shaft of the first motor (6) meshes with the toothed ring of the outer ring of the chuck (21) through a bevel gear.

4. The radiographic testing equipment for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: A dual-axis motor (16) is fixedly installed in the middle position inside the base (1). Both sides of the upper end of the base (1) are provided with spacing adjustment grooves (9). A first screw (10) is rotatably installed inside the spacing adjustment grooves (9). The external threads of the two first screws (10) are opposite to each other, and the output shaft of the dual-axis motor (16) is fixed to one end of the first screw (10). A first slider (17) is installed on the outside of the first screw (10), and the upper end of the first slider (17) is fixed to the positioning mechanism (2).

5. A radiographic testing device for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: A displacement adjustment groove (11) is provided on the rear side of the upper end face of the base (1). A second screw (18) is rotatably installed inside the displacement adjustment groove (11). A second slider (19) is threadedly connected to the outside of the second screw (18). The upper end of the second slider (19) is fixed to the bottom of the lifting adjustment device (3). A second motor (20) is installed at one end of the second screw (18).

6. The radiographic testing equipment for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: The gas storage tank is installed in the inner hole of the positioning mechanism (2), and its outer wall is in contact with the surface of the adjusting wheel (15).

7. The radiographic testing equipment for inspecting weld seams of gas storage tanks according to claim 1, characterized in that: The base (1) contains a flaw detector body, and the X-ray emitter (5) is connected to the flaw detector body.

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