Pipeline inner wall magnetic flux leakage internal detection device

Abstract

The utility model discloses a magnetic flux leakage internal detection device for the inner wall of a pipeline, and relates to the technical field of pipeline maintenance. The device comprises a supporting pipe, two lifting assemblies are symmetrically arranged on the outer surface of the supporting pipe, a magnet is arranged at the top end of each lifting assembly, a driving assembly is arranged in the supporting pipe, a detection assembly is arranged on one side of each magnet, and an elastic supporting assembly is arranged on one side of each magnet. The lifting assembly is driven by the driving assembly to ascend and descend, the magnets are driven by the lifting assembly to expand outwards, meanwhile, the detection assembly is driven by the magnets to ascend and descend together, and therefore when pipelines with different diameters are detected, only the driving assembly needs to be driven, and the detection efficiency is improved. The multiple magnets and the detection assemblies can be expanded according to pipelines of different specifications, so that the detection device can detect the pipelines of various specifications, meanwhile, the detection effect can be guaranteed, and the overall applicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline overhaul technical field, concretely, especially relates to a pipeline inner wall magnetic flux leakage internal detection device. BACKGROUND

[0002] The pipeline is used for conveying various dangerous substances such as petroleum, natural gas, toxic chemicals and the like in many industries. Among them, when the natural gas pipeline leaks and meets open fire or static electricity, explosion may be caused, so it is necessary to detect the inner wall of the pipeline by the magnetic flux leakage internal detection device periodically.

[0003] When detecting the pipeline by the magnetic flux leakage internal detection device, the magnetization body for magnetizing the pipeline is mostly fixed, so when detecting the pipeline of different specifications, in order to ensure the magnetization effect of the pipeline, the magnetization body of corresponding size needs to be used to magnetize the pipeline, which makes the magnetic flux leakage internal detection device unable to detect the pipeline of different specifications, so that the overall applicability of the magnetic flux leakage internal detection device is low.

[0004] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENT

[0005] For the problems in the related art, the utility model provides a pipeline inner wall magnetic flux leakage internal detection device to overcome the above technical problems existing in the prior art.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model discloses a pipeline inner wall magnetic flux leakage internal detection device, including the support pipe, the outer surface of support pipe is provided with two lifting assemblies symmetrically, the top of lifting assembly is provided with magnet, the magnet is arranged in circle and is provided with a plurality, the inside of support pipe is provided with drive assembly, the drive end of drive assembly is power connected with lifting assembly, one side of magnet is provided with detection assembly, one side of magnet is provided with elastic support assembly.

[0008] The elastic support assembly is used for supporting the whole device, the drive assembly is used for driving the lifting assembly to move up and down with the magnet, and the detection assembly moves up and down together under the driving of the magnet.

[0009] Further, the lifting assembly includes a moving ring, the moving ring is provided with two, the moving ring is movably connected with the support pipe, the outer surface of the moving ring is rotatably connected with a rotating rod, and the top of the rotating rod is rotatably connected with the magnet.

[0010] Further, the driving assembly comprises a bidirectional screw rod arranged in the inside of the supporting pipe, the outer surface of the bidirectional screw rod is threadedly connected with a driving disc corresponding to the moving ring, the outer surface of the supporting pipe is provided with a driving groove, the inside of the driving groove is fixedly connected with a driving rod, the top end of the driving rod is fixedly connected with the moving ring, the bottom end of the driving rod is fixedly connected with the driving disc, the inside of the supporting pipe is fixedly installed with a motor, and the output end of the motor is fixedly connected with the bidirectional screw rod.

[0011] Further, the detection assembly comprises a mounting frame fixedly connected with the inner walls of the two magnets, the inner wall top of the mounting frame is fixedly installed with a detection sensor, the outer surface of the supporting pipe is provided with a mounting groove, and the inside of the mounting groove is provided with a controller electrically connected with the detection sensor.

[0012] Further, the elastic supporting assembly comprises a supporting frame fixedly installed on the outer side of the magnet, the top of the supporting frame is movably connected with a moving rod, the top end of the moving rod is fixedly connected with a roller, the top of the supporting frame and the bottom of the roller are fixedly connected with a spring, the bottom of the supporting frame is provided with a limiting disc, the moving rod penetrates through the supporting frame, and the limiting disc is arranged on the outer side of the moving rod.

[0013] Further, the bottom of the moving rod is provided with an adjusting groove, the inside of the adjusting groove is rotatably connected with an adjusting screw rod, the outer surface of the adjusting screw rod is threadedly connected with an adjusting disc, the outer surface of the adjusting disc is fixedly connected with a guide block, the adjusting groove is provided with a guide groove corresponding to the guide block, the guide block is fixedly connected with the limiting disc through the guide groove, the bottom end of the adjusting screw rod is fixedly connected with a rotating disc, and the outer surface of the moving rod is provided with a scale groove.

[0014] Further, one side of the supporting pipe is fixedly connected with a connecting lug plate.

[0015] The utility model has the following beneficial effects:

[0016] 1、 the utility model discloses a driving assembly drives the lifting end of lifting assembly to lift, make several magnets under the driving of lifting assembly expand outward, and detection assembly is driven together under the magnet, to make when detecting the pipeline of different diameters, only need to drive the driving assembly, can make several magnets and detection assembly expand according to different specifications pipeline, to make the detection device can detect the pipeline of multiple specifications, and the detection effect can be guaranteed, to make the overall applicability of the device has been improved.

[0017] 2、The utility model discloses a support frame makes the gyro wheel can move upwards together with magnet, and the gyro wheel can contact together with the inner wall of pipeline under the spring push, under the support of gyro wheel, the device does not have the phenomenon of friction with the inner wall of pipeline when moving in the inside of pipeline, and the spring on gyro wheel can also play certain damping effect, and the setting of spring makes the gyro wheel can always adhere together with the inner wall of pipeline under the push of spring when passing some uneven positions, thereby guaranteeing the support effect of gyro wheel.

[0018] Of course, it is not necessary for any product embodying the utility model to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be needed to use the drawing of the embodiment to introduce briefly, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0020] Figure 1 It is the external contour structure schematic diagram of the utility model;

[0021] Figure 2 It is the drive assembly structure schematic diagram of the utility model;

[0022] Figure 3 It is the lifting assembly structure schematic diagram of the utility model;

[0023] Figure 4 It is the support pipe structure schematic diagram of the utility model;

[0024] Figure 5 It is the detection assembly structure schematic diagram of the utility model;

[0025] Figure 6 It is the elastic support assembly structure schematic diagram of the utility model;

[0026] Figure 7 It is the adjusting screw structure schematic diagram of the utility model.

[0027] In the drawings, the component list represented by each sign is as follows:

[0028] 1, support tube; 2, lifting assembly; 201, moving ring; 202, rotating rod; 3, magnet; 4, drive assembly; 401, bidirectional screw; 402, drive disc; 403, drive groove; 404, drive rod; 405, motor; 5, detection assembly; 501, mounting bracket; 502, detection sensor; 503, mounting groove; 504, controller; 6, elastic support assembly; 601, support frame; 602, moving rod; 603, roller; 604, spring; 605, limiting disc; 606, adjusting groove; 607, adjusting screw; 608, adjusting disc; 609, guide block; 610, guide groove; 611, rotating disc; 612, scale groove; 7, connecting lug plate. DETAILED DESCRIPTION

[0029] The technical solutions in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] In the description of the utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0031] Please refer to Figures 1-7 The utility model discloses a pipeline inner wall magnetic flux leakage inner detection device, including support tube 1, the outer surface of support tube 1 is provided with two lifting assemblies 2 that are symmetric, the top of lifting assembly 2 is provided with magnet 3, magnet 3 is arranged in circle and is provided with a plurality, the inside of support tube 1 is provided with drive assembly 4, the drive end of drive assembly 4 is connected with lifting assembly 2 powerfully, one side of magnet 3 is provided with detection assembly 5, one side of magnet 3 is provided with elastic support assembly 6.

[0032] The elastic support assembly 6 is used for supporting the whole device, the drive assembly 4 is used for driving the lifting assembly 2, so that the lifting assembly 2 drives the magnet 3 to move up and down, and the detection assembly 5 moves up and down together under the driving of the magnet 3.

[0033] When the pipeline is detected, the device is moved to the inside of the pipeline, and then the driving assembly 4 is driven, at this time the lifting assembly 2 is driven to lift under the driving of the driving assembly 4, and the plurality of magnets 3 are expanded downward under the driving of the lifting assembly 2, and the detection assembly 5 and the elastic support assembly 6 are lifted together under the driving of the corresponding magnet 3, when the elastic support assembly 6 contacts with the inner wall of the pipeline, stop driving the driving assembly 4, then move the device, and make the device start detecting the pipeline.

[0034] The lifting end of the lifting assembly 2 is lifted by the driving assembly 4, so that the plurality of magnets 3 are expanded outward under the driving of the lifting assembly 2, and the detection assembly 5 is lifted together under the driving of the magnet 3, so that when detecting pipelines of different diameters, only the driving assembly 4 needs to be driven, so that the plurality of magnets 3 and the detection assembly 5 can be expanded according to different specifications of the pipeline, and the effect of the plurality of magnets 3 when magnetizing the pipeline of different diameters can be guaranteed, and the effect of the detection assembly 5 when detecting can also be guaranteed.

[0035] In an embodiment, for the above-mentioned lifting assembly 2, the lifting assembly 2 comprises two moving rings 201, the moving rings 201 are movably connected with the support pipe 1, the outer surface of the moving ring 201 is rotatably connected with a rotating rod 202, and the top end of the rotating rod 202 is rotatably connected with the magnet 3.

[0036] By moving the two moving rings 201, the two moving rings 201 are simultaneously moved to the middle position of the magnet 3 or to the two sides of the magnet 3, so that the two moving rings 201 can drive the corresponding rotating rod 202 to change the angle when moving, at this time the overall height of the magnet 3 can also change under the support of the rotating rod 202, and the stability of the magnet 3 when lifting can be guaranteed by the two moving rings 201. The rotating rod 202 arranged at the bottom of the plurality of magnets 3 is connected with the two moving rings 201, which makes it only need to move the two moving rings 201 when lifting the plurality of magnets 3.

[0037] In one embodiment, for the above-mentioned driving assembly 4, the driving assembly 4 comprises a bidirectional screw 401 arranged inside the support pipe 1, the outer surface of the bidirectional screw 401 is threadedly connected with a driving disc 402 corresponding to the moving ring 201, the outer surface of the support pipe 1 is provided with a driving groove 403, the inside of the driving groove 403 is fixedly connected with a driving rod 404, the top end of the driving rod 404 is fixedly connected with the moving ring 201, the bottom end of the driving rod 404 is fixedly connected with the driving disc 402, the inside of the support pipe 1 is fixedly installed with a motor 405, and the output end of the motor 405 is fixedly connected with the bidirectional screw 401.

[0038] The bidirectional screw 401 is driven by the motor 405, so that the bidirectional screw 401 drives the driving disc 402 to move inside the support pipe 1, at this time the driving rod 404 can guide the driving disc 402 through the driving groove 403, so that the driving disc 402 can normally move inside the support pipe 1, and the driving disc 402 can drive the corresponding moving ring 201 to slide on the outer surface of the support pipe 1 through the driving rod 404, plus the thread grooves on the bidirectional screw 401 are reversed, so that the corresponding two moving rings 201 can simultaneously move to the middle of the magnet 3 or move to the two sides of the magnet 3, and the thread grooves on the bidirectional screw 401 are provided with two groups, which makes the magnets 3 on both sides of the detection assembly 5 can be expanded at the same time, and the whole process only needs to drive the motor 405, which is relatively convenient to operate.

[0039] In one embodiment, for the above-mentioned detection assembly 5, the detection assembly 5 comprises a mounting frame 501 fixedly connected with the inner walls of the two magnets 3, the inner wall top of the mounting frame 501 is fixedly installed with a detection sensor 502, the outer surface of the support pipe 1 is provided with a mounting groove 503, the inside of the mounting groove 503 is provided with a controller 504, and the controller 504 is electrically connected with the detection sensor 502.

[0040] When the two magnets 3 are expanded, the mounting frame 501 is driven by the two corresponding magnets 3 to move upward, at this time the detection sensor 502 is expanded together with the magnets 3 driven by the mounting frame 501; plus the detection sensor 502 is provided with a plurality of corresponding magnets 3, which makes the detection sensor 502 can guarantee the accuracy when detecting the magnetic field on the pipeline;

[0041] In one embodiment, for the elastic support assembly 6 described above, the elastic support assembly 6 comprises a support frame 601 fixedly installed on the outer side of the magnet 3, the top of the support frame 601 is movably connected with a moving rod 602, the top end of the moving rod 602 is fixedly connected with a roller 603, the top of the support frame 601 and the bottom of the roller 603 are fixedly connected with a spring 604, the bottom of the support frame 601 is provided with a limiting disc 605, the moving rod 602 penetrates through the support frame 601, and the limiting disc 605 is arranged on the outer side of the moving rod 602.

[0042] The spring 604 can push the roller 603 upward, so that the limiting disc 605 on the moving rod 602 is in contact with the bottom of the support frame 601, when the magnet 3 expands, the corresponding magnet 3 can drive the roller 603 to move upward through the support frame 601 and the moving rod 602, at this time, the roller 603 can be in contact with the inner wall of the pipeline in advance under the pushing of the spring 604, then the magnet 3 continues to move upward and makes the roller 603 can extrude the spring 604 downward, when the magnet 3 moves to the appropriate position, the movement of the magnet 3 is stopped, and at this time, the extrusion force of the spring 604 on the roller makes the roller 603 can better complete the support of the whole device, and also has a certain buffering force, and the arrangement of the roller 603 makes the whole device not rub against the inner wall of the pipeline when the device moves in the pipeline.

[0043] In one embodiment, for the moving rod 602 described above, the bottom of the moving rod 602 is provided with an adjusting groove 606, the inside of the adjusting groove 606 is rotatably connected with an adjusting screw 607, the outer surface of the adjusting screw 607 is threadedly connected with an adjusting disc 608, the outer surface of the adjusting disc 608 is fixedly connected with a guide block 609, the adjusting groove 606 is provided with a guide groove 610 corresponding to the guide block 609, the guide block 609 is fixedly connected with the limiting disc 605 through the guide groove 610, the bottom end of the adjusting screw 607 is fixedly connected with a rotating disc 611, and the outer surface of the moving rod 602 is provided with a scale groove 612.

[0044] The adjusting screw 607 is driven to rotate by the adjusting disc 608, so that the adjusting disc 608 is driven by the adjusting screw 607 to move in the adjusting groove 606, and the guide block 609 on the adjusting disc 608 drives the limiting disc 605 to slide on the outer surface of the moving rod 602 through the guide groove 610, so that the distance that the spring 604 pushes the moving rod 602 upward can be adjusted, and the overall spring force of the spring 604 can be adjusted, so that the effect of the spring 604 on the shock absorption of the roller can be adjusted according to actual conditions; and the scale groove 612 is arranged, so that the distance that the limiting disc 605 moves can be kept consistent with the assistance of the scale groove 612 when the positions of the plurality of limiting discs 605 are adjusted.

[0045] In one embodiment, for the support pipe 1 described above, the support pipe 1 is fixedly connected with a connecting lug plate 7 on one side.

[0046] One end of the universal shaft of the pushing device can be installed on the connecting lug plate 7, so that the pushing device pushes the detection device through the universal shaft, and the detection device can normally move in the pipe.

[0047] Through the above technical solution, 1, the lifting end of the lifting assembly 2 is lifted by the driving assembly 4, so that the plurality of magnets 3 are expanded outward under the driving of the lifting assembly 2, and the detection assembly 5 is lifted together under the driving of the magnet 3, so that when detecting pipes of different diameters, the driving assembly 4 only needs to be driven, so that the plurality of magnets 3 and the detection assembly 5 can be expanded according to pipes of different specifications, so that the detection device can detect pipes of multiple specifications, and the detection effect can be guaranteed, so that the applicability of the device is improved; 2, the roller 603 can move upward together with the magnet 3 through the support frame 601, and the roller 603 can contact the inner wall of the pipe under the pushing of the spring 604, so that the device does not rub against the inner wall of the pipe when moving in the pipe, and the spring 604 on the roller 603 also has a certain shock absorption effect, and the spring 604 is arranged so that the roller 603 can always be attached to the inner wall of the pipe under the pushing of the spring 604 when passing through some uneven positions, so that the supporting effect of the roller 603 can be guaranteed.

[0048] In the description of the application, references to "one embodiment", "an example", "certain examples" etc. mean that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "an example" or "certain examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all of the details of the application, nor limit the application to the specific embodiments described. Obviously, many modifications and variations of the application can be made in light of the teachings above. The embodiments are chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application. The application is merely limited by the claims and their full scope and equivalents.

Claims

1. A device for detecting magnetic flux leakage on the inner wall of a pipeline, comprising a support tube (1), characterized in that: Two lifting assemblies (2) are symmetrically arranged on the outer surface of the support tube (1), a magnet (3) is arranged at the top end of the lifting assemblies (2), and a plurality of magnets (3) are arranged in a circle. A driving assembly (4) is arranged inside the support tube (1), and a driving end of the driving assembly (4) is dynamically connected to the lifting assembly (2). A detection assembly (5) is arranged on one side of the magnet (3), and an elastic support assembly (6) is arranged on one side of the magnet (3). The elastic support component (6) is used to support the entire device, and the driving component (4) is used to drive the lifting component (2) so that the lifting component (2) drives the magnet (3) to move up and down, and at the same time, the detection component (5) moves up and down together with the magnet (3).

2. A pipeline inner wall magnetic leakage internal detection device according to claim 1, characterized in that: The lifting assembly (2) comprises a moving ring (201), two of which are provided. The moving ring (201) is movably connected to the support tube (1), and the outer surface of the moving ring (201) is rotatably connected to a rotating rod (202), and the top end of the rotating rod (202) is rotatably connected to the magnet (3).

3. A pipeline inner wall magnetic leakage internal detection device according to claim 2, characterized in that: The driving assembly (4) comprises a bidirectional screw (401), the bidirectional screw (401) being arranged inside the support tube (1), the outer surface of the bidirectional screw (401) being threadedly connected to a driving disk (402) corresponding to the moving ring (201), the outer surface of the support tube (1) being provided with a driving groove (403), the interior of the driving groove (403) being fixedly connected to a driving rod (404), the top end of the driving rod (404) being fixedly connected to the moving ring (201), the bottom end of the driving rod (404) being fixedly connected to the driving disk (402), a motor (405) being fixedly installed inside the support tube (1), the output end of the motor (405) being fixedly connected to the bidirectional screw (401).

4. The pipeline inner wall magnetic flux leakage internal detection device according to claim 1, characterized in that: The detection assembly (5) comprises a mounting frame (501), the mounting frame (501) being fixedly connected to the inner walls of the two magnets (3), a detection sensor (502) being fixedly mounted on the top of the inner wall of the mounting frame (501), a mounting groove (503) being provided on the outer surface of the support tube (1), a controller (504) being provided inside the mounting groove (503), and the controller (504) being electrically connected to the detection sensor (502).

5. The pipeline inner wall magnetic flux leakage internal detection device according to claim 1, characterized in that: The elastic support assembly (6) comprises a support frame (601), the support frame (601) is fixedly mounted on the outside of the magnet (3), the top of the support frame (601) is movably connected to a moving rod (602), the top of the moving rod (602) is fixedly connected to a roller (603), the top of the support frame (601) and the bottom of the roller (603) are fixedly connected to a spring (604), a limiting plate (605) is provided at the bottom of the support frame (601), the moving rod (602) passes through the support frame (601), and the limiting plate (605) is provided on the outside of the moving rod (602).

6. The device for detecting magnetic flux leakage on the inner wall of a pipeline according to claim 5, characterized in that: The bottom of the movable rod (602) is provided with an adjusting groove (606), the interior of the adjusting groove (606) is rotatably connected to an adjusting screw (607), the outer surface of the adjusting screw (607) is threadedly connected to an adjusting disk (608), the outer surface of the adjusting disk (608) is fixedly connected to a guide block (609), the adjusting groove (606) is provided with a guide groove (610) corresponding to the guide block (609), the guide block (609) is fixedly connected to the limit disk (605) through the guide groove (610), the bottom end of the adjusting screw (607) is fixedly connected to a rotating disk (611), and the outer surface of the movable rod (602) is provided with a scale groove (612).

7. The device for detecting magnetic flux leakage on the inner wall of a pipeline according to claim 1, characterized in that: A connecting lug plate (7) is fixedly connected to one side of the support tube (1).

Images