Oil pipe magnetic flux leakage flaw detection device

Abstract

The utility model relates to the technical field of oil pipe flaw detection, and discloses an oil pipe magnetic flux leakage flaw detection device which comprises an inverted U-shaped frame, a limiting block is fixedly installed at the top end of the inverted U-shaped frame, a conveying structure is arranged on the limiting block, an oil pipe to be detected is arranged on the conveying structure, an auxiliary structure is arranged on the limiting block, and the auxiliary structure is connected with the inverted U-shaped frame. The auxiliary structure is movably connected with an oil pipe to be detected, an inverted-L-shaped frame is fixedly installed on the inverted-U-shaped frame, magnetic flux leakage flaw detection equipment is arranged on the inverted-L-shaped frame, a sliding groove is formed in the limiting block, movable holes are formed in the left wall and the right wall of an inner cavity of the sliding groove, a limiting groove is formed in the top wall of the inner cavity of the sliding groove, and the limiting groove is fixedly connected with the limiting block. Inner cavities of the sliding groove, the movable hole and the limiting groove are movably connected with the conveying structure, the conveying structure comprises a stepping motor, and the stepping motor is fixedly connected with the limiting block. The oil pipe flaw detection device not only can perform transverse and longitudinal flaw detection on the oil pipe simultaneously, but also has high flaw detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pipe flaw detection, in particular to an oil pipe magnetic leakage flaw detection device. Background Art

[0002] An oil pipe is a special pipeline used to transport liquids or gases such as oil and natural gas. It is widely used in oil exploration, production, and transportation. The magnetic flux leakage detection device is a common non-destructive testing equipment suitable for defect detection and quality assessment of metal parts. It applies an alternating magnetic field on the surface of the object being tested through the principle of electromagnetic induction, and determines whether there are defects such as cracks, deformation, fatigue, etc. on the tested part by measuring the changes in the magnetic field.

[0003] The inventors have found in actual application that the existing magnetic flux leakage flaw detection device can only perform transverse or longitudinal flaw detection on the oil pipe one by one, but cannot perform transverse and longitudinal flaw detection on the oil pipe at the same time. Therefore, the inventors have proposed a magnetic flux leakage flaw detection device for the oil pipe. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides an oil pipe magnetic leakage flaw detection device, which has the advantages of being able to perform transverse and longitudinal flaw detection on the oil pipe at the same time and having high flaw detection efficiency, thereby solving the problem that it is impossible to perform transverse and longitudinal flaw detection on the oil pipe at the same time.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of simultaneously performing transverse and longitudinal flaw detection on the oil pipe and achieving high flaw detection efficiency, the utility model provides the following technical solutions: an oil pipe magnetic leakage flaw detection device, comprising an inverted U-shaped frame, a limit block is fixedly installed on the top of the inverted U-shaped frame, a conveying structure is arranged on the limit block, an oil pipe to be tested is arranged on the conveying structure, an auxiliary structure is arranged on the limit block, and the auxiliary structure is movably connected to the oil pipe to be tested;

[0008] An inverted L-shaped frame is fixedly mounted on the inverted U-shaped frame, and a magnetic flux leakage detection device is arranged on the inverted L-shaped frame, so as to simultaneously perform transverse and longitudinal flaw detection on the oil pipe to be tested, and the flaw detection efficiency is high.

[0009] As a preferred technical solution of the utility model, a sliding groove is opened inside the limit block, movable holes are opened on the left and right walls of the inner cavity of the sliding groove, and a limiting groove is opened on the top wall of the inner cavity of the sliding groove. The sliding groove, movable holes and the inner cavity of the limiting groove are all movably connected with the conveying structure to facilitate the operation of the conveying structure.

[0010] As a preferred technical solution of the utility model, the conveying structure includes a stepping motor, the stepping motor is fixedly connected to the limit block, and the output shaft on the stepping motor is movably connected to the inner cavity of the movable hole;

[0011] The cam is provided with a plurality of movable members, each of which is connected to the movable member by a plurality of movable members, and the movable member is connected to the movable member by a plurality of movable members.

[0012] As a preferred technical solution of the utility model, a plug-in hole is provided inside the top end of the limit block, and the inner cavity of the plug-in hole is movably connected to the auxiliary structure to facilitate assembly of the auxiliary structure.

[0013] As a preferred technical solution of the utility model, the auxiliary structure includes a plug-in column, the outer surface of the plug-in column is movably plugged into the inner cavity of the plug-in hole, and a secondary bearing plate is fixedly installed on the top of the plug-in column. The secondary bearing plate is movably connected to the oil pipe to be tested. By assembling the auxiliary structure onto the limit block, the plug-in column is plugged into the inner cavity of the plug-in hole, and then the oil pipe to be tested is placed on the secondary bearing plate and the main bearing plate. During this period, the secondary bearing plate plays an auxiliary bearing role, thereby facilitating the carrying of the oil pipe to be tested, and then facilitating the leakage magnetic flaw detection of the oil pipe to be tested.

[0014] As a preferred technical solution of the utility model, the outer surface diameter and size of the plug-in post are adapted to the inner cavity diameter and size of the plug-in hole, so as to ensure that the plug-in post fits better when plugged into the inner cavity of the plug-in hole.

[0015] As a preferred technical solution of the utility model, an upper fixing hole is opened inside the top of the inverted L-shaped frame, and a side fixing hole is opened inside the side of the inverted L-shaped frame. The inner cavities of the upper fixing hole and the side fixing hole are fixedly connected to the leakage magnetic flaw detection equipment, so that the leakage magnetic flaw detection equipment can be fixed on the inverted L-shaped frame.

[0016] As a preferred technical solution of the utility model, the magnetic flux leakage flaw detection equipment includes a magnetic flux leakage flaw detector, the magnetic flux leakage flaw detector is connected to a longitudinal flaw detection head through an electric wire, and the longitudinal flaw detection head is fixedly connected to the inner cavity of the side fixing hole;

[0017] The magnetic flux leakage flaw detector is connected to a transverse flaw detection head through an electric wire, and the transverse flaw detection head is fixedly connected to the inner cavity of the upper fixed hole. By starting the magnetic flux leakage flaw detector, when the moving oil pipe to be tested passes through the flaw detection range of the longitudinal flaw detection head and the transverse flaw detection head, the longitudinal flaw detection head and the transverse flaw detection head simultaneously perform longitudinal and transverse flaw detection on the oil pipe to be tested. At the same time, the longitudinal flaw detection head and the transverse flaw detection head transmit the electrical signal of the magnetic flux leakage flaw detection to the magnetic flux leakage flaw detector through the electric wire, which is processed by the magnetic flux leakage flaw detector, and the magnetic flux leakage situation of the oil pipe to be tested is displayed on the magnetic flux leakage flaw detector for viewing by the flaw detector, thereby facilitating the simultaneous transverse and longitudinal flaw detection of the oil pipe to be tested, and the flaw detection efficiency is high.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a tubing magnetic leakage detection device having the following features:

[0020] Beneficial effects:

[0021] 1. The oil pipe magnetic leakage flaw detection device starts the stepper motor and the magnetic leakage flaw detector at the same time. At this time, the output shaft on the stepper motor drives the threaded rod to rotate in the inner cavity of the movable hole, and the threaded rod drives the slider to move in the inner cavity of the slide groove, the slider drives the limit column to move along the inner cavity of the limit groove, the limit column drives the main bearing plate to move, and the main bearing plate drives the oil pipe to be tested to move, and the staff can assist the oil pipe to be tested to move, and when the moving oil pipe to be tested passes through the flaw detection range of the longitudinal flaw detection head and the transverse flaw detection head, the longitudinal flaw detection head and the transverse flaw detection head perform longitudinal and transverse flaw detection on the oil pipe to be tested at the same time, and the longitudinal flaw detection head and the transverse flaw detection head transmit the electrical signal of the magnetic leakage flaw detection to the magnetic leakage flaw detector through the wire, which is processed by the magnetic leakage flaw detector, and the magnetic leakage situation of the oil pipe to be tested is displayed on the magnetic leakage flaw detector for the flaw detector to be viewed by the flaw detector, so that it is convenient to perform transverse and longitudinal flaw detection on the oil pipe to be tested at the same time, and the flaw detection efficiency is high.

[0022] 2. The oil pipe magnetic leakage flaw detection device is configured by assembling the auxiliary structure onto the limit block. At this time, the plug-in column is plugged into the inner cavity of the plug-in hole, and then the oil pipe to be tested is placed on the auxiliary bearing plate and the main bearing plate. During this period, the auxiliary bearing plate plays an auxiliary bearing role, thereby facilitating the bearing of the oil pipe to be tested, thereby facilitating the magnetic leakage flaw detection of the oil pipe to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a main stereoscopic view of the utility model;

[0024] Figure 2 This is an exploded stereogram of the limit block and auxiliary structure of the utility model;

[0025] Figure 3 This is a stereoscopic diagram of the utility model without the conveying structure;

[0026] Figure 4 It is a three-dimensional diagram of the conveying structure of the utility model.

[0027] In the figure: 1. inverted U-shaped frame; 2. limit block; 21. slide groove; 22. movable hole; 23. limit groove; 24. plug-in hole; 3. conveying structure; 31. stepping motor; 32. threaded rod; 33. slider; 34. limit column; 35. main bearing plate; 4. oil pipe to be tested; 5. auxiliary structure; 51. plug-in column; 52. auxiliary bearing plate; 6. inverted L-shaped frame; 61. upper fixing hole; 62. side fixing hole; 7. leakage magnetic flaw detection equipment; 71. leakage magnetic flaw detector; 72. longitudinal flaw detection head; 73. transverse flaw detection head. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-4 , a magnetic flux leakage detection device for oil pipes is provided, comprising an inverted U-shaped frame 1, a limit block 2 is fixedly installed on the top of the inverted U-shaped frame 1, a conveying structure 3 is arranged on the limit block 2, an oil pipe to be tested 4 is arranged on the conveying structure 3, an auxiliary structure 5 is arranged on the limit block 2, and the auxiliary structure 5 is movably connected to the oil pipe to be tested 4;

[0030] An inverted L-shaped frame 6 is fixedly mounted on the inverted U-shaped frame 1 , and a magnetic flux leakage detection device 7 is arranged on the inverted L-shaped frame 6 .

[0031] A slide groove 21 is provided inside the limit block 2, and movable holes 22 are provided on the left and right walls of the inner cavity of the slide groove 21, and a limit groove 23 is provided on the top wall of the inner cavity of the slide groove 21. The inner cavity of the slide groove 21, the movable hole 22 and the limit groove 23 are all movably connected to the conveying structure 3.

[0032] The conveying structure 3 includes a stepper motor 31, the stepper motor 31 is fixedly connected to the limit block 2, and the output shaft on the stepper motor 31 is movably connected to the inner cavity of the movable hole 22;

[0033] A threaded rod 32 is fixedly installed on the output shaft of the stepper motor 31, and the threaded rod 32 is movably connected to the inner cavity of the movable hole 22. A slider 33 is threadedly connected to the outer surface of the threaded rod 32, and the slider 33 is slidably connected to the inner cavity of the slide groove 21. A limiting column 34 is fixedly installed on the top of the slider 33, and the outer surface of the limiting column 34 is movably connected to the inner cavity of the limiting groove 23. A main bearing plate 35 is fixedly installed on the end of the limiting column 34 away from the slider 33, and the main bearing plate 35 is movably connected to the oil pipe 4 to be tested.

[0034] An inserting hole 24 is provided inside the top of the limiting block 2 , and the inner cavity of the inserting hole 24 is movably connected to the auxiliary structure 5 .

[0035] The auxiliary structure 5 includes a plug-in column 51 , the outer surface of which is movably plugged into the inner cavity of the plug-in hole 24 , and a secondary bearing plate 52 is fixedly mounted on the top of the plug-in column 51 , and the secondary bearing plate 52 is movably connected to the oil pipe 4 to be tested.

[0036] The outer diameter and size of the plug-in post 51 are matched with the inner diameter and size of the plug-in hole 24 .

[0037] An upper fixing hole 61 is provided inside the top of the inverted L-shaped frame 6 , and a side fixing hole 62 is provided inside the side of the inverted L-shaped frame 6 . The inner cavities of the upper fixing hole 61 and the side fixing hole 62 are fixedly connected to the magnetic flux leakage detection device 7 .

[0038] The magnetic flux leakage flaw detection device 7 includes a magnetic flux leakage flaw detector 71, and the magnetic flux leakage flaw detector 71 is connected to a longitudinal flaw detection head 72 through an electric wire, and the longitudinal flaw detection head 72 is fixedly connected to the inner cavity of the side fixing hole 62;

[0039] The magnetic flux leakage detector 71 is connected to a transverse flaw detection head 73 via an electric wire, and the transverse flaw detection head 73 is fixedly connected to the inner cavity of the upper fixing hole 61 .

[0040] Working principle: by assembling the auxiliary structure 5 onto the limit block 2, the plug-in column 51 is plugged into the inner cavity of the plug-in hole 24, and then the oil pipe 4 to be tested is placed on the auxiliary bearing plate 52 and the main bearing plate 35. During this period, the auxiliary bearing plate 52 plays an auxiliary bearing role, thereby facilitating the bearing of the oil pipe 4 to be tested, and further facilitating the magnetic flux leakage detection of the oil pipe 4 to be tested;

[0041] Then, by starting the stepper motor 31 fixed on the limit block 2, the magnetic flux leakage flaw detector 71 is started at the same time. At this time, the output shaft on the stepper motor 31 drives the threaded rod 32 fixed on the output shaft to rotate in the inner cavity of the movable hole 22, and the threaded rod 32 drives the slider 33 to move in the inner cavity of the slide groove 21, and the slider 33 drives the limit column 34 to move along the inner cavity of the limit groove 23, and the limit column 34 drives the main bearing plate 35 to move, and the main bearing plate 35 drives the oil pipe 4 to be tested to move, and the staff can assist the oil pipe 4 to be tested to move, and the moving oil pipe 4 to be tested is longitudinally moved. When the flaw detection head 72 and the transverse flaw detection head 73 are within the flaw detection range, the longitudinal flaw detection head 72 and the transverse flaw detection head 73 simultaneously perform longitudinal and transverse flaw detection on the oil pipe 4 to be tested, and at the same time, the longitudinal flaw detection head 72 and the transverse flaw detection head 73 transmit the electrical signal of the leakage magnetic flaw detection to the leakage magnetic flaw detector 71 via the wire, which is processed by the leakage magnetic flaw detector 71, and the leakage magnetic situation of the oil pipe 4 to be tested is displayed on the leakage magnetic flaw detector 71 for the flaw detector to watch, thereby facilitating the simultaneous transverse and longitudinal flaw detection of the oil pipe 4 to be tested, and the flaw detection efficiency is high. The device can not only perform transverse and longitudinal flaw detection on the oil pipe at the same time, but also has high flaw detection efficiency.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A magnetic leakage detection device for oil pipes, characterized in that: The invention comprises an inverted U-shaped frame (1), a limit block (2) is fixedly installed on the top of the inverted U-shaped frame (1), a conveying structure (3) is arranged on the limit block (2), an oil pipe to be tested (4) is arranged on the conveying structure (3), an auxiliary structure (5) is arranged on the limit block (2), and the auxiliary structure (5) is movably connected to the oil pipe to be tested (4); An inverted L-shaped frame (6) is fixedly mounted on the inverted U-shaped frame (1), and a magnetic flux leakage detection device (7) is arranged on the inverted L-shaped frame (6).

2. The oil pipe magnetic leakage flaw detection device according to claim 1, characterized in that: A slide groove (21) is provided inside the limit block (2), movable holes (22) are provided on the left and right walls of the inner cavity of the slide groove (21), a limit groove (23) is provided on the top wall of the inner cavity of the slide groove (21), and the inner cavities of the slide groove (21), the movable holes (22) and the limit groove (23) are all movably connected to the conveying structure (3).

3. The oil pipe magnetic leakage flaw detection device according to claim 2, characterized in that: The conveying structure (3) comprises a stepping motor (31), the stepping motor (31) is fixedly connected to the limit block (2), and the output shaft on the stepping motor (31) is movably connected to the inner cavity of the movable hole (22); A threaded rod (32) is fixedly mounted on the output shaft of the stepper motor (31), and the threaded rod (32) is movably connected to the inner cavity of the movable hole (22). A slider (33) is threadedly connected to the outer surface of the threaded rod (32), and the slider (33) is slidably connected to the inner cavity of the slide groove (21). A limiting column (34) is fixedly mounted on the top of the slider (33), and the outer surface of the limiting column (34) is movably connected to the inner cavity of the limiting groove (23). A main bearing plate (35) is fixedly mounted on the end of the limiting column (34) away from the slider (33), and the main bearing plate (35) is movably connected to the oil pipe (4) to be tested.

4. The oil pipe magnetic leakage flaw detection device according to claim 2, characterized in that: A plug hole (24) is provided inside the top end of the limit block (2), and the inner cavity of the plug hole (24) is movably connected to the auxiliary structure (5).

5. The oil pipe magnetic leakage flaw detection device according to claim 4, characterized in that: The auxiliary structure (5) comprises a plug-in column (51), the outer surface of which is movably plugged into the inner cavity of the plug-in hole (24), and a secondary bearing plate (52) is fixedly mounted on the top of the plug-in column (51), and the secondary bearing plate (52) is movably connected to the oil pipe (4) to be tested.

6. The oil pipe magnetic leakage flaw detection device according to claim 5, characterized in that: The outer surface diameter and size of the plug-in column (51) are compatible with the inner cavity diameter and size of the plug-in hole (24).

7. The oil pipe magnetic leakage flaw detection device according to claim 1, characterized in that: An upper fixing hole (61) is provided inside the top of the inverted L-shaped frame (6), and a side fixing hole (62) is provided inside the side of the inverted L-shaped frame (6). The inner cavities of the upper fixing hole (61) and the side fixing hole (62) are both fixedly connected to the magnetic flux leakage detection equipment (7).

8. The oil pipe magnetic leakage flaw detection device according to claim 7, characterized in that: The magnetic flux leakage flaw detection device (7) comprises a magnetic flux leakage flaw detector (71), wherein the magnetic flux leakage flaw detector (71) is connected to a longitudinal flaw detection head (72) via an electric wire, and the longitudinal flaw detection head (72) is fixedly connected to the inner cavity of the side fixing hole (62); The magnetic flux leakage flaw detector (71) is connected to a transverse flaw detection head (73) via an electric wire, and the transverse flaw detection head (73) is fixedly connected to the inner cavity of the upper fixing hole (61).

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