Auxiliary device for flaw detection of welded steel pipe

Abstract

The utility model discloses an auxiliary device for flaw detection of a welded steel pipe, which relates to the technical field of welding seam detection and comprises a sleeve, a sliding rail is arranged above the sleeve, a sliding rod is arranged in the sliding rail, and a connecting frame is arranged at the top of the sliding rod; the connecting frame is L-shaped, and a flaw detection frame is arranged at one horizontal end of the connecting frame; a pair of connecting seats are symmetrically arranged at the two ends of the outer side of the sleeve, a fixing seat is arranged below the connecting seats, a pair of upper threaded columns are arranged at the two ends of the inner side of the sleeve, and the included angle between each upper threaded column and the corresponding connecting seat is 90 degrees. According to the auxiliary device for flaw detection of the welded steel pipe, the sliding rod and the connecting frame are arranged, the connecting frame is driven to rotate in the sliding rail, and then the position of the flaw detector at the transverse end of the connecting frame is adjusted, so that the flaw detector is aligned to weld joints at various positions.

Description

Technical Field

[0001] The utility model relates to the technical field of weld detection, in particular to an auxiliary device for flaw detection of welded steel pipes. Background Technique

[0002] Nondestructive testing is a detection technology that uses the principles of sound, light, electromagnetic, etc. of objects to detect defects, chemical, and physical parameters of materials, parts, and equipment without damaging or affecting the service performance of the detected object; nondestructive testing is an essential and effective tool for industrial development.

[0003] An ultrasonic detector is a detection device with a small volume, light weight, and easy to carry. When in use, it is necessary to hold the reflection of the ultrasonic wave to detect the welded steel pipe. However, the placement position of the weld during detection will cause inconvenience to the operator, thereby affecting the accuracy of flaw detection.

[0004] Therefore, an auxiliary device for flaw detection of welded steel pipes is provided to facilitate detection at different weld positions of steel pipes and ensure the flaw detection accuracy. Content of the Utility Model

[0005] Therefore, the purpose of the utility model is to provide an auxiliary device for flaw detection of welded steel pipes to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model provides the following technical solution: an auxiliary device for flaw detection of welded steel pipes, which includes a sleeve. A slide rail is arranged above the sleeve, a slide bar is arranged inside the slide rail, and a connecting frame is arranged at the top of the slide bar; the shape of the connecting frame is "L", and a flaw detection frame is arranged at the horizontal end of the connecting frame; a pair of connecting seats are symmetrically arranged at both ends of the outer side of the sleeve, a fixed seat is arranged below the connecting seat, and a pair of upper threaded columns are arranged at both ends of the inner side of the sleeve, and the included angle between the upper threaded column and the connecting seat is 90°.

[0007] As a preferred scheme of the auxiliary device for flaw detection of welded steel pipes described in the utility model, wherein: the height of the connecting seat is the same as the height of the sleeve, the width of the fixed seat is the same as the width of the connecting seat, one end of the fixed seat is flush with one end of the connecting seat, the other end of the fixed seat is located at the bottom end of the sleeve, and one end of the fixed seat is fixed to the bottom end of the sleeve.

[0008] As a preferred scheme of the auxiliary device for flaw detection of welded steel pipes described in the utility model, wherein: a lower threaded column is arranged on the opposite side of the fixed seat, the lower threaded column is located at the center of the side surface of the fixed seat, a lower threaded rod is arranged inside the lower threaded column, and a lower pressing plate is arranged at the center of the other end of the lower threaded rod.

[0009] As a preferred embodiment of the auxiliary device for flaw detection of welded steel pipes according to the present utility model, wherein: an upper threaded rod is arranged inside the upper threaded column, an upper pressing plate is arranged at the center of the other end of the upper threaded rod, and the shape and thickness of the upper pressing plate are the same as those of the lower pressing plate.

[0010] As a preferred embodiment of the auxiliary device for flaw detection of welded steel pipes according to the present utility model, wherein: a first telescopic seat is arranged inside the horizontal end of the connecting frame, a second telescopic seat is arranged inside the other end of the first telescopic seat, a cover plate is arranged outside the other end of the second telescopic seat, a telescopic rod is arranged inside the other end of the second telescopic seat, and a flaw detector is arranged at the other end of the telescopic rod.

[0011] As a preferred embodiment of the auxiliary device for flaw detection of welded steel pipes according to the present utility model, wherein: fixing plates are arranged on both sides of the cover plate, the shape of the cover plate is the same as the cross-section of the horizontal direction of the connecting frame, the thickness of the fixing plate is greater than that of the cover plate, the top surface of the fixing plate is flush with the top surface of the cover plate, and the side surface of the fixing plate is flush with the side surface of the cover plate.

[0012] As a preferred embodiment of the auxiliary device for flaw detection of welded steel pipes according to the present utility model, wherein: a wheel frame is arranged on one side of the top of the fixing plate, the side surface of the fixing plate is flush with the side surface of the wheel frame, and a roller is arranged inside the wheel frame.

[0013] Advantages of the present utility model:

[0014] 1. The present utility model provides an auxiliary device for flaw detection of welded steel pipes. By arranging a sliding rod and a connecting frame, the connecting frame can be driven to rotate inside the slide rail, thereby adjusting the position of the flaw detector at the horizontal end of the connecting frame to align the flaw detector with welds at various positions.

[0015] 2. The present utility model provides an auxiliary device for flaw detection of welded steel pipes. By arranging rollers, the rollers roll on the side surface of the steel pipe, facilitating the adjustment of the position of the connecting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0017] Figure 1 is a schematic diagram of the overall structure of an auxiliary device for flaw detection of welded steel pipes according to the present utility model;

[0018] Figure 2 is a bottom view of an auxiliary device for flaw detection of welded steel pipes according to the present utility model.

[0019] Figure 3 This is a schematic structural diagram of a flaw detection frame for an auxiliary device for flaw detection of welded steel pipes in the present utility model.

[0020] Explanation of reference numerals:

[0021] 1. Sleeve; 11. Slide rail; 12. Slide bar; 2. Connecting frame; 21. Upper threaded column; 22. Upper threaded rod; 23. Upper pressing plate; 3. Flaw detection frame; 31. Cover plate; 32. Fixed plate; 33. Wheel frame; 34. Roller; 4. Fixed seat; 41. Connecting seat; 42. Lower threaded column; 43. Lower threaded rod; 44. Lower pressing plate; 5. First telescopic seat; 51. Second telescopic seat; 52. Telescopic rod; 6. Flaw detector. Detailed implementation manners

[0022] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific implementation manners of the present utility model will be given with reference to the accompanying drawings of the specification.

[0023] Refer to Figures 1 - 3 , an auxiliary device for flaw detection of welded steel pipes provided by the present utility model. This auxiliary device for flaw detection of welded steel pipes includes a sleeve 1. A slide rail 11 is arranged above the sleeve 1, a slide bar 12 is arranged inside the slide rail 11, and a connecting frame 2 is arranged at the top of the slide bar 12; the connecting frame 2 is in an "L" shape, and a flaw detection frame 3 is arranged at the horizontal end of the connecting frame 2; a pair of connecting seats 41 are symmetrically arranged at both ends of the outer side of the sleeve 1, a fixed seat 4 is arranged below the connecting seat 41, and a pair of upper threaded columns 21 are arranged at both ends of the inner side of the sleeve 1, and the included angle between the upper threaded column 21 and the connecting seat 41 is 90°.

[0024] Specifically, a slide rail 11 is arranged above the sleeve 1, a slide bar 12 is arranged inside the slide rail 11, and a connecting frame 2 is arranged at the top of the slide bar 12. The connecting frame 2 can move inside the slide rail 11 through the slide bar 12, and the number of slide bars 12 can be increased according to the different sizes of the steel pipes, thereby increasing the number of connecting frames 2; the connecting frame 2 is in an "L" shape, and a flaw detection frame 3 is arranged at the horizontal end of the connecting frame 2, and the steel pipe is detected through the flaw detection frame 3; a pair of connecting seats 41 are symmetrically arranged at both ends of the outer side of the sleeve 1, a fixed seat 4 is arranged below the connecting seat 41, and the fixed seat 4 is fixed to the sleeve 1 through the connecting seat 41; a pair of upper threaded columns 21 are arranged at both ends of the inner side of the sleeve 1, and the included angle between the upper threaded column 21 and the connecting seat 41 is 90°. The fixed seat 4 and the upper threaded column 21 are arranged vertically and are aligned with the inside of the sleeve 1.

[0025] The height of the connecting seat 41 is the same as that of the sleeve 1, the width of the fixing seat 4 is the same as that of the connecting seat 41, one end of the fixing seat 4 is flush with one end of the connecting seat 41, the other end of the fixing seat 4 is located at the bottom end of the sleeve 1, and one end of the fixing seat 4 is fixed to the bottom end of the sleeve 1.

[0026] Specifically, the fixing seat 4 is completely fixed to the bottom surfaces of the connecting seat 41 and the sleeve 1.

[0027] On the opposite side of the fixing seat 4, there is a lower threaded post 42. The lower threaded post 42 is located at the center of the side surface of the fixing seat 4. Inside the lower threaded post 42, there is a lower threaded rod 43. At the center of the other end of the lower threaded rod 43, there is a lower pressing plate 44.

[0028] Specifically, the two lower threaded posts 42 face the inner side of the sleeve 1, and the centers of the two lower threaded posts 42 are collinear with the center of the sleeve 1; the lower threaded rod 43 expands and contracts by rotating inside the lower threaded post 42, thereby adjusting the position of the lower pressing plate 44 inside the sleeve 1.

[0029] Inside the upper threaded post 21, there is an upper threaded rod 22. At the center of the other end of the upper threaded rod 22, there is an upper pressing plate 23. The shape and thickness of the upper pressing plate 23 are the same as those of the lower pressing plate 44.

[0030] Specifically, the upper threaded rod 22 expands and contracts by rotating inside the upper threaded post 21 to adjust the position of the upper pressing plate 23 inside the sleeve 1; so that the positions of the upper pressing plate 23 and the lower pressing plate 44 correspond to each other.

[0031] Inside the horizontal end of the connecting frame 2, there is a first telescopic seat 5. Inside the other end of the first telescopic seat 5, there is a second telescopic seat 51. On the outer side of the other end of the second telescopic seat 51, there is a cover plate 31. Inside the other end of the second telescopic seat 51, there is a telescopic rod 52. At the other end of the telescopic rod 52, there is a flaw detector 6.

[0032] Specifically, inside the horizontal end of the connecting frame 2, there is a first telescopic seat 5. Inside the other end of the first telescopic seat 5, there is a second telescopic seat 51. On the outer side of the other end of the second telescopic seat 51, there is a cover plate 31. The first telescopic seat 5 and the second telescopic seat 51 drive the cover plate 31 to move relative to the connecting frame 2; inside the other end of the second telescopic seat 51, there is a telescopic rod 52. At the other end of the telescopic rod 52, there is a flaw detector 6. The second telescopic seat 51 and the telescopic rod 52 cooperate to drive the flaw detector 6 to move relative to the cover plate 31.

[0033] On both sides of the cover plate 31, fixing plates 32 are provided. The shape of the cover plate 31 is the same as the horizontal cross-section of the connecting frame 2. The thickness of the fixing plate 32 is greater than that of the cover plate 31. The top surface of the fixing plate 32 is flush with the top surface of the cover plate 31, and the side surface of the fixing plate 32 is flush with the side surface of the cover plate 31.

[0034] Specifically, fixing plates 32 are provided on both sides of the cover plate 31. The shape of the cover plate 31 is the same as the horizontal cross-section of the connecting frame 2, so that the transverse cross-sections of the cover plate 31 and the connecting frame 2 can be completely fitted; the thickness of the fixing plate 32 is greater than that of the cover plate 31. The top surface of the fixing plate 32 is flush with the top surface of the cover plate 31, and the side surface of the fixing plate 32 is flush with the side surface of the cover plate 31. Through the contact between the side part of the fixing plate 32 and the connecting frame 2 to generate frictional force, the width of the fixing plate 32 is the same as the longitudinal width of the connecting frame 2.

[0035] On one side of the top of the fixing plate 32, a wheel frame 33 is provided. The side surface of the fixing plate 32 is flush with the side surface of the wheel frame 33, and a roller 34 is arranged inside the wheel frame 33.

[0036] Specifically, the wheel frames 33 are longitudinally distributed on both sides of the cover plate 31. The wheel frames 33 are parallel to the longitudinal direction of the connecting frame 2. The top surface of the wheel frame 33 is at the same initial position as the flaw detector 6, so that the top position of the roller 34 is higher than the initial position of the flaw detector 6.

[0037] During the use process, the sleeve 1 is sleeved on the steel pipe, and the flaw detector 6 is aligned with the weld. After alignment, the lower threaded rods 43 on both sides of the steel pipe are rotated to clamp the steel pipe with the lower pressing plate 44, and then the upper threaded rods 22 on both sides are rotated to also clamp the steel pipe with the upper pressing plate 23, so that the sleeve 1 and the steel pipe are fixed to each other. The flaw detection frame 3 is pulled out from the inside of the connecting frame 2 to make the roller 34 contact the steel pipe, and then the flaw detector 6 is attached to the weld. The connecting frame 2 is moved to make the connecting frame 2 move inside the sleeve 1. The connecting frame 2 drives the roller 34 to roll on the surface of the steel pipe, so that the flaw detector 6 detects the weld. According to different placement angles of the steel pipe, the position of the connecting frame 2 and the weld is adjusted to make the flaw detector 6 always contact the weld for flaw detection.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A welded steel pipe flaw detection auxiliary device, comprising a casing (1), characterized in that: A slide rail (11) is arranged above the sleeve (1), a slide rod (12) is arranged inside the slide rail (11), and a connecting frame (2) is arranged on the top of the slide rod (12); the connecting frame (2) is in an "L" shape, and a flaw detection frame (3) is arranged at a horizontal end of the connecting frame (2); a pair of connecting seats (41) are symmetrically arranged at both ends of the outer side of the sleeve (1), a fixing seat (4) is arranged below the connecting seat (41), and a pair of upper threaded columns (21) are arranged at both ends of the inner side of the sleeve (1), and the angle between the upper threaded column (21) and the connecting seat (41) is 90 degrees.

2. A welded steel pipe flaw detection auxiliary device according to claim 1, characterized in that: The height of the connecting seat (41) is the same as the height of the sleeve (1), the width of the fixing seat (4) is the same as the width of the connecting seat (41), one end of the fixing seat (4) is flush with one end of the connecting seat (41), the other end of the fixing seat (4) is located at the bottom end of the sleeve (1), and one end of the fixing seat (4) is fixed to the bottom end of the sleeve (1).

3. A welded steel pipe flaw detection auxiliary device according to claim 2, characterized in that: A lower threaded column (42) is provided on the opposite side of the fixing seat (4), the lower threaded column (42) is located at the center of the side surface of the fixing seat (4), a lower threaded rod (43) is provided inside the lower threaded column (42), and a lower pressing plate (44) is provided at the center of the other end of the lower threaded rod (43).

4. A welded steel pipe flaw detection auxiliary device according to claim 3, characterized in that: An upper threaded rod (22) is arranged inside the upper threaded column (21), and an upper pressing plate (23) is arranged at the center of the other end of the upper threaded rod (22). The shape and thickness of the upper pressing plate (23) are the same as those of the lower pressing plate (44).

5. The welded steel pipe flaw detection auxiliary device according to claim 1, characterized in that: A first telescopic seat (5) is disposed inside a horizontal end of the connecting frame (2), a second telescopic seat (51) is disposed inside the other end of the first telescopic seat (5), a cover plate (31) is disposed outside the other end of the second telescopic seat (51), a telescopic rod (52) is disposed inside the other end of the second telescopic seat (51), and a flaw detector (6) is disposed at the other end of the telescopic rod (52).

6. A welded steel pipe flaw detection auxiliary device according to claim 5, characterized in that: Fixed plates (32) are provided on both sides of the cover plate (31); the shape of the cover plate (31) is the same as the horizontal cross section of the connecting frame (2); the thickness of the fixed plate (32) is greater than the thickness of the cover plate (31); the top surface of the fixed plate (32) is flush with the top surface of the cover plate (31); and the side surface of the fixed plate (32) is flush with the side surface of the cover plate (31).

7. The welded steel pipe flaw detection auxiliary device according to claim 6, characterized in that: A wheel frame (33) is arranged on one side of the top of the fixing plate (32), the side surface of the fixing plate (32) is flush with the side surface of the wheel frame (33), and a roller (34) is arranged inside the wheel frame (33).

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