Center exposure support for nondestructive testing of pressure vessel

Abstract

The utility model discloses a central exposure support for pressure vessel nondestructive testing, which relates to the technical field of nondestructive testing and comprises a support body, fixing components matched with the support body are arranged at the bottoms of the outer walls of two sides of the support body, a lifting component is arranged in the support body, and a supporting block is connected to the bottom of the lifting component. According to the pressure vessel inner wall flaw detection device, the lifting assembly drives the detection assembly to descend, in the descending process of the detection assembly, the first servo motor drives the mounting frame to rotate, and at the moment, the flaw detection head and the infrared distance meter continuously rotate to detect the inner wall of the pressure vessel while descending; the flaw detection head and the infrared distance meter feed back the detection result in time, at the moment, the alarm gives an alarm to indicate that the pressure is prone to internal damage, compared with a traditional exposure support, all parts in the pressure container can be detected, the detection result is more comprehensive, and meanwhile manual assistance is not needed for detection.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing technology, and in particular to a central exposure support for nondestructive testing of pressure vessels. Background Technology

[0002] Pressure vessels are widely used in people's production and daily life, but they pose safety hazards due to their flammability, explosiveness, corrosiveness, and high temperatures. Explosions or leaks can cause environmental pollution and endanger human health. Therefore, the design, production, installation, and application of pressure vessels require monitoring to ensure they are always in a safe condition. Before being put into use, pressure vessels need to undergo non-destructive testing to reduce the possibility of danger during use. Flaw detection equipment is generally used to test for internal problems such as cracks and air bubbles. Because pressure vessels are deep, a central exposure support is needed when using flaw detection equipment.

[0003] However, existing exposure brackets have certain shortcomings:

[0004] First, the existing exposure bracket requires manual assistance to operate the flaw detection equipment after it is fixed. When manually operating the flaw detection equipment to inspect the inside of the pressure vessel, omissions are likely to occur, and it is not possible to inspect all the locations inside the pressure vessel, resulting in an incomplete inspection.

[0005] Secondly, the existing exposure holders cannot adapt to pressure vessels of different sizes. When the size of the pressure vessel changes, a new exposure holder needs to be selected, which makes the operation inconvenient. Utility Model Content

[0006] The purpose of this application is to provide a central exposure holder for non-destructive testing of pressure vessels, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a central exposure bracket for non-destructive testing of pressure vessels, comprising a frame, with fixed components adapted to the bottom of both outer walls of the frame, a lifting component inside the frame, a support block connected to the bottom of the lifting component, the support block being adapted to the lifting component, a limiting component on both outer walls of the support block, the limiting component being adapted to the support block, a detection component at the bottom of the support block, the detection component being adapted to the support block, the detection component including a mounting block welded to the bottom outer wall of the support block, a mounting frame rotatably mounted on the bottom outer wall of the mounting block, a flaw detector and an infrared rangefinder mounted on both outer walls of the mounting frame, the infrared rangefinder being located below the flaw detector, and both the flaw detector and the infrared rangefinder being adapted to the mounting frame.

[0008] Preferably, an alarm is installed at the bottom of the outer wall of the frame, and both the flaw detector and the infrared rangefinder are connected to a PLC controller via wires. The PLC controller is connected to the alarm via wires.

[0009] Preferably, the mounting block has a drive groove inside, a first servo motor is installed inside the drive groove, the bottom outer wall of the mounting block has a rotation groove, the top outer wall of the mounting frame is welded with a connecting pin, the connecting pin is rotatably connected to the inner wall of the rotation groove, and the output shaft of the first servo motor is connected to the connecting pin.

[0010] Preferably, the frame body has an installation groove inside, a lifting groove is rotatably installed on the inner wall of the installation groove, a threaded rod is rotatably installed on the inner wall of the lifting groove by means of threads, the end of the threaded rod is rotatably connected to the support block, a second servo motor is installed on the top outer wall of the frame body by bolts, the output shaft of the second servo motor is connected to the lifting groove, and the second servo motor is provided with a protective cover that is compatible with it.

[0011] Preferably, the fixing component includes fixing grooves welded to the bottom of the outer walls on both sides of the frame, a fixing frame slidably installed on the inner wall of the fixing groove, the fixing frame having an "L" shaped structure, an electric telescopic rod installed on the inner wall of the fixing groove, the end of the electric telescopic rod being connected to the fixing frame, the electric telescopic rod being adapted to the fixing frame, an anti-slip pad being provided on the bottom outer wall of the fixing frame, the anti-slip pad being adapted to the fixing frame, the thickness of the anti-slip pad being less than the thickness of the fixing frame, and the anti-slip pad being made of anti-slip rubber material.

[0012] Preferably, the limiting component includes limiting grooves welded to the outer walls of both sides of the support block, a limiting rod slidably installed on the inner wall of the limiting groove, a limiting block welded to the end of the limiting rod, and a protective pad provided on the outer wall of the limiting block, the protective pad being adapted to the limiting block.

[0013] Preferably, the outer wall of the limiting rod has equally spaced limiting holes, and a limiting pin is inserted into the top outer wall of the limiting groove. The limiting pin is adapted to the limiting holes, and the length of the limiting pin is greater than the thickness of the limiting rod.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] 1. In this utility model, during operation, the frame is fixed by the fixing component, and then the lifting component drives the detection component to descend. During the descent of the detection component, the first servo motor drives the mounting frame to rotate. At this time, the flaw detector and the infrared rangefinder rotate continuously while descending to detect the inner wall of the pressure vessel. When there is a dent or crack in the inner wall of the pressure vessel, the flaw detector and the infrared rangefinder promptly provide feedback on the detection results. At this time, the alarm sounds, indicating that there is internal damage to the pressure vessel. Compared with the traditional exposure bracket, it can detect various parts inside the pressure vessel, and the detection results are more comprehensive. At the same time, no manual assistance is required for detection.

[0016] 2. In this utility model, when the exposure bracket is fixed, the bracket is placed outside the pressure vessel. Then, the electric telescopic rod drives the bracket to retract, causing the brackets to move closer together and squeeze the outer wall of the pressure vessel. Compared with traditional devices, it can fix pressure vessels of different sizes. Before detection, the limiting pin is pulled out and the length of the limiting rod is adjusted so that the limiting block is close to the inner wall of the pressure vessel, thereby limiting the support block. Due to the obstruction of the limiting rod, the support block will not rotate due to centrifugal force, thus maintaining the stability of the detection component.

[0017] 3. In this utility model, during the inspection, the second servo motor drives the lifting groove to rotate, thereby causing the threaded rod to gradually extend out of the lifting groove, thus driving the inspection component to gradually inspect along the inner wall of the pressure vessel from top to bottom. Compared with the traditional exposure bracket, the inspection is more convenient and comprehensive. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main body's external structure in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the detection component structure in an embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the lifting component structure in an embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the fixed component structure in an embodiment of this application.

[0023] In the diagram: 1. Frame; 2. Lifting slot; 3. Threaded rod; 4. Support block; 5. Mounting block; 6. Mounting frame; 7. Flaw detector; 8. Infrared rangefinder; 9. Alarm; 10. First servo motor; 11. Fixing slot; 12. Fixing frame; 13. Electric telescopic rod; 14. Anti-slip mat; 15. Limiting slot; 16. Limiting rod; 17. Limiting block; 18. Protective pad; 19. Limiting hole; 20. Limiting pin; 21. Second servo motor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0025] Example: Reference Figure 1-4 The central exposure bracket shown for non-destructive testing of pressure vessels includes a frame 1. Fixing components are fitted to the bottom of both outer walls of the frame 1. A lifting assembly is installed inside the frame 1, with a support block 4 connected to its bottom. The support block 4 is fitted to the lifting assembly. Restriction components are fitted to both outer walls of the support block 4. A detection assembly is installed at the bottom of the support block 4, fitted to it. The detection assembly includes a mounting block 5 welded to the bottom outer wall of the support block 4. A mounting frame 6 is rotatably mounted on the bottom outer wall of the mounting block 5. The mounting frame 6 has mounting brackets on both outer walls. The flaw detector 7 and the infrared rangefinder 8 are located below the flaw detector 7. Both the flaw detector 7 and the infrared rangefinder 8 are adapted to the mounting frame 6. An alarm 9 is installed on the bottom of the outer wall of the frame 1. Both the flaw detector 7 and the infrared rangefinder 8 are connected to a PLC controller via wires. The PLC controller is connected to the alarm 9 via wires. A drive groove is opened inside the mounting block 5. A first servo motor 10 is installed inside the drive groove. A rotating groove is opened on the bottom outer wall of the mounting block 5. A connecting pin is welded to the top outer wall of the mounting frame 6. The connecting pin is rotatably connected to the inner wall of the rotating groove. The output shaft of the first servo motor 10 is connected to the connecting pin.

[0026] With the above structure: During operation, the frame 1 is inserted into the pressure vessel. At this time, the lifting assembly is in its initial state. Then, the frame 1 is fixed in the center of the pressure vessel by the fixing assembly. Next, the size of the limiting assembly is adjusted to restrict the support block 4 so that the support block 4 does not rotate with the lifting assembly. Then, the lifting assembly drives the detection assembly to descend. During the descent of the detection assembly, the first servo motor 10 drives the mounting frame 6 to rotate. At this time, the flaw detector 7 and the infrared rangefinder 8 rotate continuously while descending to detect the inner wall of the pressure vessel. When there is a dent or crack in the inner wall of the pressure vessel, the flaw detector 7 and the infrared rangefinder 8 promptly provide feedback on the detection results. At this time, the alarm 9 sounds an alarm, indicating that there is internal damage to the pressure vessel. Compared with traditional exposure brackets, it can detect various parts inside the pressure vessel, and the detection results are more comprehensive. At the same time, no manual assistance is required for detection, making the detection more convenient and faster.

[0027] like Figure 3 As shown, the frame 1 has an internal mounting groove, and a lifting groove 2 is rotatably mounted on the inner wall of the mounting groove. A threaded rod 3 is rotatably mounted on the inner wall of the lifting groove 2 via a thread. The end of the threaded rod 3 is rotatably connected to a support block 4. A second servo motor 21 is bolted to the top outer wall of the frame 1. The output shaft of the second servo motor 21 is connected to the lifting groove 2. The second servo motor 21 is equipped with a protective cover that is compatible with it. During testing, the second servo motor 21 drives the lifting groove 2 to rotate, thereby causing the threaded rod 3 to gradually extend out of the lifting groove 2, thus driving the testing component to perform testing from top to bottom along the inner wall of the pressure vessel. Compared with traditional exposure brackets, the testing is more convenient and comprehensive.

[0028] like Figure 4 As shown, the fixing assembly includes fixing grooves 11 welded to the bottom of the outer walls on both sides of the frame 1. A fixing frame 12 is slidably installed on the inner wall of the fixing groove 11. The fixing frame 12 has an "L" shaped structure. An electric telescopic rod 13 is installed on the inner wall of the fixing groove 11. The end of the electric telescopic rod 13 is connected to the fixing frame 12. The electric telescopic rod 13 is adapted to the fixing frame 12. An anti-slip pad 14 is provided on the bottom outer wall of the fixing frame 12. The anti-slip pad 14 is adapted to the fixing frame 12. The thickness of the anti-slip pad 14 is less than the thickness of the fixing frame 12. The anti-slip pad 14 is made of anti-slip rubber. When the exposure bracket is fixed, the fixing frame 12 is placed outside the pressure vessel. Then, the electric telescopic rod 13 drives the fixing frame 12 to retract, causing the fixing frames 12 to move closer to each other and squeeze the outer wall of the pressure vessel, thereby fixing it. Compared with traditional devices, it can fix pressure vessels of different sizes, making operation more convenient. The anti-slip pad 14 increases friction and improves the stability of the bracket.

[0029] like Figure 3As shown, the limiting component includes limiting grooves 15 welded to the outer walls of both sides of the support block 4. A limiting rod 16 is slidably installed on the inner wall of the limiting groove 15. A limiting block 17 is welded to the end of the limiting rod 16. A protective pad 18 is provided on the outer wall of the limiting block 17. The protective pad 18 is adapted to the limiting block 17. The outer wall of the limiting rod 16 has limiting holes 19 distributed at equal intervals. A limiting pin 20 is inserted into the top outer wall of the limiting groove 15. The limiting pin 20 is adapted to the limiting hole 19. The length of the limiting pin 20 is greater than the thickness of the limiting rod 16. Before testing, the limiting pin 20 is pulled out and the length of the limiting rod 16 is adjusted so that the limiting block 17 is close to the inner wall of the pressure vessel, thereby limiting the support block 4. Due to the obstruction of the limiting rod 16, the support block 4 will not rotate due to centrifugal force, thus maintaining the stability of the testing component.

[0030] The working principle of this practical application is as follows:

[0031] During operation, the frame 1 is inserted into the pressure vessel. At this time, the lifting assembly is in its initial state. Then, the frame 1 is fixed in the center of the pressure vessel by the fixing assembly. Next, the size of the limiting assembly is adjusted to restrict the support block 4 so that the support block 4 does not rotate with the lifting assembly. Then, the lifting assembly drives the detection assembly to descend. During the descent of the detection assembly, the first servo motor 10 drives the mounting frame 6 to rotate. At this time, the flaw detector 7 and the infrared rangefinder 8 rotate continuously while descending to detect the inner wall of the pressure vessel. When there is a dent or crack in the inner wall of the pressure vessel, the flaw detector 7 and the infrared rangefinder 8 promptly provide feedback on the detection results. At this time, the alarm 9 sounds an alarm, indicating that there is internal damage to the pressure vessel. Compared with traditional exposure brackets, it can detect various parts inside the pressure vessel, and the detection results are more comprehensive. At the same time, no manual assistance is required for detection, making the detection more convenient and faster.

[0032] When the exposure bracket is fixed, the bracket 12 is placed outside the pressure vessel. Then, the electric telescopic rod 13 drives the bracket 12 to retract, causing the brackets 12 to move closer to each other and squeeze the outer wall of the pressure vessel. Compared with traditional devices, it can fix pressure vessels of different sizes and is more convenient to operate. The anti-slip pad 14 increases friction and improves the stability of the bracket. Before detection, the limiting pin 20 is pulled out and the length of the limiting rod 16 is adjusted so that the limiting block 17 is close to the inner wall of the pressure vessel and thus restricts the support block 4. Due to the obstruction of the limiting rod 16, the support block 4 will not rotate due to centrifugal force, and the stability of the detection component can be maintained.

[0033] During testing, the second servo motor 21 drives the lifting groove 2 to rotate, thereby causing the threaded rod 3 to gradually extend out of the lifting groove 2, which in turn drives the testing component to perform testing from top to bottom along the inner wall of the pressure vessel. Compared with the traditional exposure bracket, the testing is more convenient and comprehensive.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A central exposure support for non-destructive testing of pressure vessels, comprising a frame (1), characterized in that: The frame (1) has fixed components adapted to its bottom on both sides of the outer wall. The frame (1) has a lifting component inside. The bottom of the lifting component is connected to a support block (4). The support block (4) is adapted to the lifting component. The outer walls on both sides of the support block (4) have limiting components adapted to the support block (4). The bottom of the support block (4) has a detection component adapted to the support block (4). The detection component includes a mounting block (5) welded to the bottom outer wall of the support block (4). The bottom outer wall of the mounting block (5) is rotatably mounted with a mounting frame (6). The outer walls on both sides of the mounting frame (6) are equipped with a flaw detector (7) and an infrared rangefinder (8). The infrared rangefinder (8) is located below the flaw detector (7). The flaw detector (7) and the infrared rangefinder (8) are adapted to the mounting frame (6).

2. The central exposure support for non-destructive testing of pressure vessels according to claim 1, characterized in that: An alarm (9) is installed at the bottom of the outer wall of the frame (1). The flaw detector (7) and the infrared rangefinder (8) are both connected to a PLC controller via wires. The PLC controller is connected to the alarm (9) via wires.

3. The central exposure support for non-destructive testing of pressure vessels according to claim 1, characterized in that: The mounting block (5) has a drive groove inside, and a first servo motor (10) is installed inside the drive groove. The bottom outer wall of the mounting block (5) has a rotating groove. The top outer wall of the mounting bracket (6) is welded with a connecting pin. The connecting pin is rotatably connected to the inner wall of the rotating groove. The output shaft of the first servo motor (10) is connected to the connecting pin.

4. The central exposure support for non-destructive testing of pressure vessels according to claim 1, characterized in that: The frame (1) has an installation groove inside, and a lifting groove (2) is rotatably installed on the inner wall of the installation groove. A threaded rod (3) is rotatably installed on the inner wall of the lifting groove (2) by means of a thread. The end of the threaded rod (3) is rotatably connected to the support block (4). A second servo motor (21) is installed on the top outer wall of the frame (1) by means of bolts. The output shaft of the second servo motor (21) is connected to the lifting groove (2). The second servo motor (21) is provided with a protective cover that is compatible with it.

5. The central exposure support for non-destructive testing of pressure vessels according to claim 1, characterized in that: The fixing component includes fixing grooves (11) welded to the bottom of the outer walls on both sides of the frame (1). A fixing frame (12) is slidably installed on the inner wall of the fixing groove (11). The fixing frame (12) has an "L" shaped structure. An electric telescopic rod (13) is installed on the inner wall of the fixing groove (11). The end of the electric telescopic rod (13) is connected to the fixing frame (12). The electric telescopic rod (13) is adapted to the fixing frame (12). An anti-slip pad (14) is provided on the bottom outer wall of the fixing frame (12). The anti-slip pad (14) is adapted to the fixing frame (12). The thickness of the anti-slip pad (14) is less than the thickness of the fixing frame (12). The anti-slip pad (14) is made of anti-slip rubber material.

6. The central exposure support for non-destructive testing of pressure vessels according to claim 1, characterized in that: The limiting component includes limiting grooves (15) welded to the outer walls of both sides of the support block (4), a limiting rod (16) slidably installed on the inner wall of the limiting groove (15), a limiting block (17) welded to the end of the limiting rod (16), and a protective pad (18) provided on the outer wall of the limiting block (17), the protective pad (18) being adapted to the limiting block (17).

7. The central exposure support for non-destructive testing of pressure vessels according to claim 6, characterized in that: The outer wall of the limiting rod (16) is provided with equally spaced limiting holes (19), and the top outer wall of the limiting groove (15) is fitted with a limiting pin (20). The limiting pin (20) is adapted to the limiting hole (19), and the length of the limiting pin (20) is greater than the thickness of the limiting rod (16).

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