Radiographic device for detecting fillet weld of pipe and pipe plate of air cooler
By designing a radiographic device, using components such as wire plug holes, film fixers and exposure conduits, non-destructive testing of the corner welds of the air-cooler pipes is achieved, and the detection accuracy and welding difficulty in the prior art is solved. Problem, improving the practicality of welding quality control and device.
Patent Information
- Application Number
- CN202420776034.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing air-cooler pipe sheet corner weld detection technology mainly relies on penetration detection, and cannot detect internal defects of the weld. Due to the air-cooler structure, the detection accuracy is low and the welding is difficult, and there is a lack of effective non-destructive testing methods. It leads to difficulty in welding quality control.
A radiographic device was designed, including a board, wire plug hole, film fixer, exposure pipe and conversion head. By setting wire plug hole, pipe, film fixer, film, pipe sheet corner weld, exposure pipe, exposure point and the conversion head to realize non-destructive testing of the corner welds of the air-cooler pipe sheets.
It realizes effective non-destructive testing of the corner welds of the air-cooler pipes, improves welding quality control, reduces failure rate and maintenance costs, and the device is compact in structure, simple in operation, low in price, and has strong practicality.
Smart Images
Figure CN222364936U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ray detection of pressure-bearing equipment, in particular to a ray photography device used for detecting fillet welds of tubes and tube sheets of air coolers. Background Art
[0002] In life, air cooler is the abbreviation of air cooler, which is the most widely used heat exchange equipment for condensation and cooling in petrochemical and oil and gas processing production. Air cooler is generally composed of main parts such as tube bundle, tube box, fan, shutter and frame.
[0003] At present, the existing inspection technology for the corner welds of air cooler tubes and tube sheets is mainly penetration testing, but penetration testing can only detect surface opening defects but not internal defects of welds. In addition, due to the influence of the air cooler structure, the operation and observation of penetration testing are limited, and the detection accuracy is low. In addition, due to the special structure of the corner welds of air cooler tubes and tube sheets, welding is difficult, and effective non-destructive testing methods have not yet been developed. Therefore, the welding quality control of this type of corner welds has prominent contradictions. Utility Model Content
[0004] The purpose of the utility model is to provide a radiographic device for detecting corner welds of tubes and tube sheets of air coolers, so as to solve the problem raised in the above-mentioned background technology that the existing detection technology for corner welds of tubes and tube sheets of air coolers is mainly penetration testing, but penetration testing can only detect surface opening defects but cannot detect internal defects of welds, and due to the influence of the air cooler structure, the operation and observation of penetration testing are limited, the detection accuracy is low, and because the corner welds of tubes and tube sheets of air coolers have special structures and are difficult to weld, no effective non-destructive testing means have been developed yet, so the welding quality control of such corner welds has prominent contradictions.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radiographic device for detecting fillet welds of tubes and tube sheets of air coolers, comprising a plate, a plurality of wire plugging holes are symmetrically opened inside the plate, a tube is fixedly connected to one side of the plate and located on one side of the wire plugging holes, a film holder is arranged inside one of the wire plugging holes and located inside the tube, a film is arranged on the outside of the film holder, a tube sheet fillet weld is arranged inside the plate and located on the outside of the film, an exposure conduit is arranged inside one of the wire plugging holes, an exposure point is arranged on the outside of the exposure conduit and located inside the plate, and a conversion head is arranged at one end of the exposure conduit and located on the outside of the plate.
[0006] As a preferred solution of the utility model: a first fixing ring plate is arranged on the outer side of the film holder, and the internal thread of the first fixing ring plate is connected to two first threaded rods, and one end of the two first threaded rods is rotatably connected to a first clamping block located inside the first fixing ring plate, which can facilitate clamping and fixing of the film holder.
[0007] As a preferred solution of the utility model: two suction cups are fixedly connected to one side of the first fixing ring plate close to the board, so as to facilitate sucking the first fixing ring plate onto the board.
[0008] As a preferred solution of the utility model: two first limiting rods are fixedly connected to one side of the first clamping block close to the first threaded rod, and the two first limiting rods are slidably connected to the first fixed ring plate to guide the limiting effect.
[0009] As a preferred solution of the utility model: a soft pad is fixedly connected to the inner side of the first clamping block, which can protect the film holder.
[0010] As a preferred solution of the utility model: a second fixed ring plate is provided on the outer side of the exposure guide tube, two first sliding grooves are symmetrically provided inside the second fixed ring plate, the inner walls of the two first sliding grooves are slidably connected with a first sliding block, a second threaded rod is rotatably connected to one side of the first sliding block, the second threaded rod is threadedly connected to the second fixed ring plate, a suction cup plate is provided on the outer side of the second threaded rod and located on the outer side of the second fixed ring plate, two second limiting rods are fixedly connected between the suction cup plate and the first sliding block, and the two second limiting rods are slidably connected to the second fixed ring plate, so as to fix the second fixed ring plate on the plate.
[0011] As a preferred solution of the utility model: a bolt is fixedly connected to a side of the second fixed ring plate away from the plate, a nut is threadedly connected to the outer side of the bolt, the nut is rotatably connected to the third ring plate, two limiting telescopic rods are symmetrically fixedly connected to the inner side of the third ring plate, a second clamping block is fixedly connected to the side of the two limiting telescopic rods away from the third ring plate, a second spring is sleeved on the outer side of the limiting telescopic rod and located on one side of the second clamping block, which can clamp and fix the exposure guide tube.
[0012] As a preferred solution of the utility model: a scale limiting rod is slidably connected inside the third ring plate, and the scale limiting rod is fixedly connected to the second fixed ring plate, which can play a guiding and limiting role.
[0013] The beneficial effects of the utility model are: the utility model has a novel structure, simple operation, and is easy to use. It is not only compact in structure, but also more practical. Compared with the traditional device, the utility model is equipped with wire plugging holes, tubes, film holders, films, tube sheet corner welds, exposure ducts, exposure points and conversion heads, which can realize effective non-destructive testing of the air cooler tube and tube sheet corner welds, thereby effectively controlling the welding quality. The failure rate of the device is extremely low and the maintenance cost is low. Not only that, the device is low in price, which helps the subsequent technology promotion. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the board of the utility model;
[0016] Figure 3 It is a structural schematic diagram of the first fixed ring plate of the utility model;
[0017] Figure 4 This is a schematic diagram of the structure of the third ring plate of the utility model;
[0018] Figure 5 It is an enlarged view of point A of the utility model;
[0019] Figure 6 It is an enlarged view of point B of the present utility model.
[0020] In the figure: 1. plate; 2. film holder; 3. thread plugging hole; 4. tube; 5. exposure guide tube; 6. exposure point; 7. film; 8. tube-plate fillet weld; 9. first fixed ring plate; 10. first threaded rod; 11. first clamping block; 12. first limit rod; 13. cushion; 14. second fixed ring plate; 15. first slide groove; 16. first slider; 17. second threaded rod; 18. suction cup plate; 19. second limit rod; 20. bolt; 21. nut; 22. third ring plate; 23. scale limit rod; 24. limit telescopic rod; 25. second clamping block; 26. second spring; 27. conversion head. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figures 1 to 6The utility model provides a technical solution: a radiographic device for detecting fillet welds of tubes and tube sheets of air coolers, comprising a plate 1, a plurality of plug holes 3 are symmetrically opened inside the plate 1, a tube 4 is fixedly connected to one side of the plate 1 and located on one side of the plug holes 3, a film holder 2 is arranged inside one of the plug holes 3 and located inside the tube 4, a film 7 is arranged outside the film holder 2, a tube sheet fillet weld 8 is arranged inside the plate 1 and located outside the film 7, an exposure conduit 5 is arranged inside one of the plug holes 3, and an exposure conduit 5 is arranged inside the exposure conduit 5. An exposure point 6 is arranged on the outside of the light guide tube 5 and located inside the board 1, and a conversion head 27 is arranged on one end of the exposure guide tube 5 and located on the outside of the board 1. By arranging the wire plugging hole 3, the tube 4, the film holder 2, the film 7, the tube sheet corner weld 8, the exposure guide tube 5, the exposure point 6 and the conversion head 27, effective non-destructive testing of the air cooler tube and tube sheet corner weld can be achieved, thereby effectively controlling the welding quality, and the failure rate of this device is extremely low and the maintenance cost is low. Not only that, this device is low in price, which helps the subsequent technology promotion.
[0023] A first fixing ring plate 9 is arranged on the outside of the film holder 2, and two first threaded rods 10 are connected to the inner thread of the first fixing ring plate 9, and one end of the two first threaded rods 10 is rotatably connected to a first clamping block 11 located in the first fixing ring plate 9, which can facilitate the clamping and fixing of the film holder 2; two suction cups are fixedly connected to the side of the first fixing ring plate 9 close to the board 1, which is convenient for sucking the first fixing ring plate 9 on the board 1; two first limiting rods 12 are fixedly connected to the side of the first clamping block 11 close to the first threaded rod 10, and the two first limiting rods 12 are slidably connected to the first fixing ring plate 9, which can guide the limiting effect; a soft pad 13 is fixedly connected to the inner side of the first clamping block 11, which can protect the film holder 2; a second fixing ring plate 14 is arranged on the outside of the exposure guide tube 5, and two first sliding grooves 15 are symmetrically provided inside the second fixing ring plate 14, and the inner walls of the two first sliding grooves 15 are slidably connected to a first slider 16, and one side of the first slider 16 is rotatably connected to a second threaded rod 17, and the second threaded rod 1 7 is threadedly connected to the second fixing ring plate 14, a suction cup plate 18 is arranged on the outer side of the second threaded rod 17 and located on the outer side of the second fixing ring plate 14, two second limiting rods 19 are fixedly connected between the suction cup plate 18 and the first slider 16, and the two second limiting rods 19 are slidably connected to the second fixing ring plate 14, so as to fix the second fixing ring plate 14 on the board 1; a bolt 20 is fixedly connected to the side of the second fixing ring plate 14 away from the board 1, and a nut 21 is threadedly connected to the outer side of the bolt 20, and the nut 21 is threadedly connected to the third The ring plate 22 is rotatably connected, and two limiting telescopic rods 24 are symmetrically fixedly connected to the inner side of the third ring plate 22. The two limiting telescopic rods 24 are fixedly connected to the second clamping block 25 on the side away from the third ring plate 22. A second spring 26 is sleeved on the outer side of the limiting telescopic rods 24 and on one side of the second clamping block 25, which can clamp and fix the exposure guide tube 5; the inside of the third ring plate 22 is slidably connected to a scale limiting rod 23, which is fixedly connected to the second fixed ring plate 14 and can play a guiding and limiting role.
[0024] Specifically, when inspecting the fillet weld of the tube plate of the air cooler, the film 7 is fixed on the outside of the film holder 2, and then the film holder 2 is placed in the first fixed ring plate 9, the two first threaded rods 10 are rotated to drive the two first clamping blocks 11 to approach, and the two soft pads 13 are used to contact the film holder 2 for clamping, and the first clamping blocks 11 are guided and limited by the two first limiting rods 12, and then the film holder 2 is inserted into the board 1, and sucked on the board 1 by the suction cup on the first fixed ring plate 9, and then the exposure guide tube 5 is placed in the second fixed ring plate 14 and the third ring plate 22, and the thumb and index finger of one hand push the two second clamping blocks 25 apart, and the second clamping blocks 25 are guided by the two limiting telescopic rods 24, and when the two second clamping blocks 25 are separated, the second spring 26 is compressed, and then the second clamping block 25 is released to apply a force to the exposure by the second spring 26. The light guide tube 5 is clamped, and then the exposure point 6 on the exposure guide tube 5 is flipped to the required angle position, and the second threaded rod 17 is rotated to move in the second fixed ring plate 14, so that the second threaded rod 17 drives the first slider 16 to slide in the first slide groove 15, and the first slider 16 drives the suction cup plate 18 to move through the two second limit rods 19, and then the suction cup plate 18 is used to suck on the board 1 to fix the position, and then when it is necessary to move the position of the exposure point 6 on the exposure guide tube 5, the nut 21 is rotated to drive the third ring plate 22 to move on the outside of the bolt 20, so that the third ring plate 22 slides on the outside of the scale limit rod 23, and the exposure point 6 can be moved to the required position by observing the scale line outside the scale limit rod 23, and then the exposure guide tube 5 is dynamically transported through the stock conversion head 27 to the exposure point 6 for radiation beam detection.
[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.
[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers, comprising a plate (1), characterized in that: A plurality of wire plugging holes (3) are symmetrically provided inside the board (1); a tube (4) is fixedly connected to one side of the board (1) and located on one side of the wire plugging hole (3); a film holder (2) is provided inside one of the wire plugging holes (3) and located inside the tube (4); a film (7) is provided on the outside of the film holder (2); a tube-sheet fillet weld (8) is provided inside the board (1) and located on the outside of the film (7); an exposure guide tube (5) is provided inside one of the wire plugging holes (3); an exposure point (6) is provided on the outside of the exposure guide tube (5) and located inside the board (1); and a conversion head (27) is provided at one end of the exposure guide tube (5) and located on the outside of the board (1).
2. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 1, characterized in that: A first fixing ring plate (9) is arranged on the outer side of the film holder (2); two first threaded rods (10) are connected to the inner thread of the first fixing ring plate (9); one end of the two first threaded rods (10) is rotatably connected to a first clamping block (11) which is located inside the first fixing ring plate (9).
3. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 2, characterized in that: Two suction cups are fixedly connected to one side of the first fixed ring plate (9) close to the plate (1).
4. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 2, characterized in that: Two first limiting rods (12) are fixedly connected to one side of the first clamping block (11) close to the first threaded rod (10), and the two first limiting rods (12) are slidably connected to the first fixed ring plate (9).
5. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 2, characterized in that: A soft pad (13) is fixedly connected to the inner side of the first clamping block (11).
6. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 1, characterized in that: A second fixed ring plate (14) is arranged on the outer side of the exposure guide tube (5), two first sliding grooves (15) are symmetrically arranged inside the second fixed ring plate (14), the inner walls of the two first sliding grooves (15) are slidably connected with a first sliding block (16), one side of the first sliding block (16) is rotatably connected with a second threaded rod (17), the second threaded rod (17) is threadedly connected to the second fixed ring plate (14), a suction cup plate (18) is arranged on the outer side of the second threaded rod (17) and located on the outer side of the second fixed ring plate (14), two second limiting rods (19) are fixedly connected between the suction cup plate (18) and the first sliding block (16), and the two second limiting rods (19) are slidably connected to the second fixed ring plate (14).
7. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 6, characterized in that: A bolt (20) is fixedly connected to the side of the second fixed ring plate (14) away from the plate (1); a nut (21) is threadedly connected to the outer side of the bolt (20); the nut (21) is rotatably connected to the third ring plate (22); two limiting telescopic rods (24) are symmetrically fixedly connected to the inner side of the third ring plate (22); a second clamping block (25) is fixedly connected to the side of the two limiting telescopic rods (24) away from the third ring plate (22); a second spring (26) is sleeved on the outer side of the limiting telescopic rod (24) and located on one side of the second clamping block (25).
8. A radiographic device for detecting fillet welds of tubes and tube sheets of air coolers according to claim 7, characterized in that: A scale limiting rod (23) is slidably connected inside the third ring plate (22), and the scale limiting rod (23) is fixedly connected to the second fixed ring plate (14).