Pipeline defect detection device and detection method

Abstract

The invention provides a pipeline defect detection device and a detection method. The detection device comprises a blocking piece used for blocking the end portion of a to-be-detected pipeline, and a first through hole is formed in the blocking piece; the first driving rod is inserted into the first through hole, and the axial direction of the first driving rod is a first direction; the linear driving mechanism is arranged at one end of the first driving rod and used for driving the first driving rod to move in the first direction; and the detection mechanism is arranged at the other end of the first driving rod and is used for detecting defects of the inner wall of the to-be-detected pipeline. By adopting the pipeline defect detection device, defect detection can be automatically performed on the inner wall of the to-be-detected pipeline along the axial direction of the to-be-detected pipeline, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of detection, and particularly to a pipeline defect detection device and a detection method. Background Art

[0002] As an important part of the shipbuilding industry, the quality of ship pipelines is directly related to the safe operation of ships and energy efficiency. Therefore, it is necessary to regularly detect pipeline defects to ensure the safe operation of ships and avoid environmental pollution caused by pipeline leakage. However, the existing pipeline detection mechanisms are cumbersome to operate and cannot automatically detect defects at different positions along the axial direction of the pipeline, resulting in low detection efficiency and low detection accuracy. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a pipeline defect detection device and a detection method that overcome or at least partially solve the above problems, and solve the problem that the existing pipeline detection mechanism cannot automatically detect defects at different positions along the axial direction of the pipeline.

[0004] Specifically, the present invention provides a pipeline defect detection device, including:

[0005] A stopper for stopping at the end of the pipeline to be detected, and a first through hole is provided on the stopper;

[0006] A first driving rod inserted into the first through hole, and the axial direction of the first driving rod is the first direction;

[0007] A linear driving mechanism is arranged at one end of the first driving rod for driving the first driving rod to move along the first direction;

[0008] A detection mechanism is arranged at the other end of the first driving rod for detecting defects on the inner wall of the pipeline to be detected.

[0009] Optionally, the detection mechanism includes:

[0010] A detection part;

[0011] An adjustment mechanism for adjusting the position of the detection part in the second direction, and the second direction is perpendicular to the first direction.

[0012] Optionally, the detection part includes a first detection part and a second detection part, and the first detection part and the second detection part are arranged at intervals along the second direction;

[0013] The adjustment mechanism is configured to: adjust the distance between the first detection part and the second detection part in the second direction.

[0014] Optionally, the second direction is the vertical direction;

[0015] The adjusting mechanism includes a first adjusting mechanism and a second adjusting mechanism;

[0016] The first adjusting mechanism includes:

[0017] A first mounting arm, fixedly arranged on the upper side of the first driving rod, and a first through hole penetrating up and down is arranged on the first mounting arm;

[0018] A push rod, inserted into the first through hole, and the first detection part is arranged at the upper end of the push rod;

[0019] A cam, located at the lower end of the push rod, and the cam is connected with a rotation driving mechanism for driving the cam to rotate around a first axis so as to drive the push rod to move up and down;

[0020] The second adjusting mechanism includes:

[0021] A second mounting arm, fixedly arranged on the lower side of the first driving rod;

[0022] A telescopic rod, the upper end of the telescopic rod is fixedly connected with the second mounting arm, and the second detection part is arranged at the lower end of the telescopic rod; the telescopic rod is configured to: expand and contract along the up-and-down direction so as to drive the second detection part to move up and down.

[0023] Optionally, the pipeline defect detection device further includes:

[0024] A fixing device for fixedly installing the blocking part at the end of the pipeline to be detected.

[0025] Optionally, the fixing device includes:

[0026] Two clamping parts, separable or closable in a third direction;

[0027] A mounting frame, fixedly arranged on the outer periphery of the blocking part, and a mounting hole extending along the third direction is arranged on the mounting frame;

[0028] A second driving rod, inserted into the mounting hole, and the second driving rod is configured to: when the second driving rod moves towards the side close to the first driving rod, drive the two clamping parts to approach each other so as to clamp the outer wall of the pipeline to be detected.

[0029] Optionally, the fixing device further includes a spring and a limit block, the limit block is arranged at one end of the second driving rod far from the clamping part, one end of the spring is fixedly connected with the limit block, and the other end is fixedly connected with the mounting frame; the spring is configured to: drive the second driving rod to move towards the side close to the clamping part so as to push the clamping part to clamp the outer wall of the pipeline to be detected.

[0030] Optionally, the linear drive mechanism includes:

[0031] A movable plate, one end of the movable plate is fixedly connected to the end of the first driving rod, and a second threaded hole is formed in the movable plate;

[0032] A threaded rod, the threaded rod is arranged in parallel and spaced apart from the first driving rod, and the threaded rod is threadedly connected to the second threaded hole;

[0033] A first motor for driving the threaded rod to rotate so as to drive the movable plate to move in the first direction;

[0034] A mounting seat, one end of the mounting seat is fixedly connected to the stopper, and the other end is provided with the first motor.

[0035] On the other hand, this embodiment also provides a pipeline defect detection method, which is applicable to the pipeline defect detection device described in any one of the above, and the detection method includes:

[0036] Insert the detection mechanism into the pipeline to be detected;

[0037] Abut the stopper against the end of the pipeline to be detected;

[0038] Start the detection mechanism and the linear drive mechanism, and the linear drive mechanism drives the first driving rod to move at the preset speed so that the detection mechanism automatically detects along the axial direction of the pipeline to be detected.

[0039] Optionally, the detection method further includes:

[0040] Obtain the wall thickness and / or inner diameter and / or axial dimension information of the pipeline to be detected;

[0041] Obtain the preset speed according to the wall thickness and / or the inner diameter and / or the axial dimension information;

[0042] The starting of the detection mechanism includes:

[0043] Start the adjusting mechanism, adjust the position of the detection part in the second direction according to the inner diameter, so that the detection part contacts or approaches the inner wall of the pipeline to be detected; start the detection part.

[0044] In the pipeline defect detection device and detection method of the invention, the pipeline defect detection device is ingeniously designed and easy to operate. Specifically, the usage method of the pipeline defect detection device is as follows: Insert the detection mechanism into the pipeline to be detected along the first direction, and make the stopper abut against the end of the pipeline to be detected. Then, turn on the detection mechanism and the linear drive mechanism, which is used to drive the first drive rod to move along the first direction, so that the detection mechanism can move along the axial direction of the pipeline to be detected, thereby automatically detecting different positions in the axial direction of the pipeline to be detected. It can be seen that by using the pipeline defect detection device of the present invention, the inner wall of the pipeline to be detected can be automatically detected for defects along the axial direction, improving the detection efficiency.

[0045] From the following detailed description of some specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will more clearly understand the above and other objects, advantages and features of the present invention. Brief Description of the Drawings

[0046] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0047] Figure 1 is a schematic structural diagram of a pipeline detection mechanism according to an embodiment of the present invention from the first perspective;

[0048] Figure 2 is a schematic structural diagram of a pipeline detection mechanism according to an embodiment of the present invention from the second perspective;

[0049] Figure 3 is a schematic structural diagram of a pipeline detection mechanism according to an embodiment of the present invention from the third perspective.

[0050] List of Reference Numerals in the Drawings:

[0051] 1. Stopper;

[0052] 2. First drive rod;

[0053] 3. Linear drive mechanism; 31. Movable plate; 32. Threaded rod; 33. First motor; 34. Mounting seat;

[0054] 4. Detection mechanism; 41. First detection part; 42. Second detection part; 43. First adjustment mechanism; 431. First mounting arm; 432. Push rod; 433. Cam; 434. Rotating drive mechanism; 4341. Second motor; 44. Second adjustment mechanism; 441. Second mounting arm; 442. Telescopic rod; 4421. First rod; 4422. Second rod;

[0055] 5. Fixing device; 51. Mounting bracket; 52. Clamping part; 53. Second driving rod; 54. Spring; 55. Limit block. Detailed implementation manner

[0056] In the description of this embodiment, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0057] Terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features, that is, include one or more of such features.

[0058] In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features can be further included.

[0059] Unless otherwise clearly specified and limited, terms such as "installation", "connection", "coupling", "fixing", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0060] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features between them.

[0061] That is, in the description of this embodiment, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", or "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0062] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the description of the embodiments of the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0063] Figure 1 is a schematic structural diagram of a pipeline defect detection device according to an embodiment of the present invention. As Figure 1 shown, and referring to Figures 2 to 3 , this embodiment provides a pipeline defect detection device, which includes a stopper 1, a first driving rod 2, a linear driving mechanism 3, and a detection mechanism 4.

[0064] The stopper 1 is used to stop at the end of the pipeline to be detected. A first through hole is provided on the stopper 1. The first driving rod 2 is inserted into the first through hole, and the axial direction of the first driving rod 2 is the first direction. The linear driving mechanism 3 is arranged at one end of the first driving rod 2 and is used to drive the first driving rod 2 to move along the first direction. The detection mechanism 4 is arranged at the other end of the first driving rod 2, and the detection mechanism 4 is used to detect the defects on the inner wall of the pipeline to be detected.

[0065] The pipeline defect detection device of this embodiment is ingeniously designed and easy to operate. Specifically, the usage method of the pipeline defect detection device is as follows: Insert the detection mechanism 4 into the pipeline to be detected along the first direction, and make the stopper 1 abut against the end of the pipeline to be detected. Then turn on the detection mechanism 4 and turn on the linear driving mechanism 3 to drive the first driving rod 2 to move along the first direction, so that the detection mechanism 4 can move along the axial direction of the pipeline to be detected, thereby automatically detecting different positions in the axial direction of the pipeline to be detected. It can be seen that by using the pipeline defect detection device of this embodiment, the inner wall of the pipeline to be detected can be automatically detected for defects along its axial direction, improving the detection efficiency.

[0066] As Figure 3 shown, in some alternative embodiments of the present invention, one end of the stopper 1 is provided with a stopper mating surface for mating with the end of the pipeline to be detected. The cross-section of the stopper 1 in the first direction can be circular or square, etc. The cross-section of the stopper 1 can partially or completely cover the end of the pipeline to be detected.

[0067] As Figures 1 to 3As shown, in some alternative embodiments of the present invention, the detection mechanism 4 includes a detection part and an adjustment mechanism. Among them, the detection part is used to detect the inner wall of the pipeline to be detected. The adjustment mechanism is used to adjust the position of the detection part in the second direction, and the second direction is perpendicular to the first direction. Specifically, the second direction is the radial direction of the first driving rod 2.

[0068] During use, after inserting the detection mechanism 4 into the pipeline to be detected, the position of the detection part in the second direction can be adjusted through the adjustment structure. That is to say, the position of the detection part in the radial direction of the pipeline to be detected can be adjusted through the adjustment mechanism, thereby improving the detection accuracy and the versatility of the pipeline defect detection device, so as to detect pipelines with different inner diameters or variable-diameter pipelines.

[0069] In order to improve the detection accuracy, in some alternative embodiments of the present invention, the detection part can also be two or more, and each detection part can be evenly distributed along the circumferential direction of the first driving rod 2.

[0070] As Figure 2 and Figure 3 shown, in some alternative embodiments of the present invention, the detection part includes a first detection part 41 and a second detection part 42, and the first detection part 41 and the second detection part 42 are arranged at intervals in the second direction. The adjustment mechanism is configured to: adjust the distance between the first detection part 41 and the second detection part 42 in the second direction. Specifically, the first detection part 41 and the second detection part 42 are distributed at both ends in the inner radial direction of the pipeline to be detected. Compared with the embodiment with only one detection part, this embodiment has two detection parts, which can improve the detection accuracy of the pipeline, thereby reducing the probability of missed detection.

[0071] As Figure 2 and Figure 3 shown, in some alternative embodiments of the present invention, the second direction is the vertical direction. The first direction is the horizontal direction. The adjustment mechanism includes a first adjustment mechanism 43 and a second adjustment mechanism 44. The first adjustment mechanism 43 includes a first mounting arm 431, a push rod 432 and a cam 433.

[0072] The first mounting arm 431 is fixedly arranged on the upper side of the first driving rod 2, and a first through hole penetrating up and down is provided on the first mounting arm 431. The push rod 432 is inserted into the first through hole, and the first detection part 41 is arranged at the upper end of the push rod 432. The cam 433 is located at the lower end of the push rod 432, and the cam 433 is connected with a rotation driving mechanism 434 for driving the cam 433 to rotate around the first axis to drive the push rod 432 to move up and down. Preferably, the first axis is collinear with the central axis of the first driving rod 2.

[0073] The second adjusting mechanism 44 includes a second mounting arm 441 and a telescopic rod 442. The second mounting arm 441 is fixedly arranged on the lower side of the first driving rod 2. The upper end of the telescopic rod 442 is fixedly connected to the second mounting arm 441, and a second detection portion 42 is provided at the lower end of the telescopic rod 442. The upper end of the telescopic rod 442 is a fixed end, and the lower end is a free end. The telescopic rod 442 is configured such that the telescopic rod 442 can be telescoped in the up-and-down direction to drive the second detection portion 42 to move up and down.

[0074] The adjusting mechanism of this embodiment has the advantages of reasonable design, high adjustment accuracy, low manufacturing cost, and low use cost. When in use, the rotation driving mechanism 434 is rotated to drive the cam 433 to rotate, and the cam 433 can push the push rod 432 to move upward so that the first detection portion 41 approaches or contacts the top position of the inner wall of the pipeline to be detected. Under the action of gravity, the second detection portion 42 drives the lower end of the telescopic rod 442 to move downward so that the second detection portion 42 approaches or contacts the bottom position of the inner wall of the pipeline to be detected.

[0075] As Figure 3 shown, in some alternative embodiments of the present invention, the telescopic rod 442 includes a first rod 4421 and a second rod 4422. A cavity extending along its axial direction is provided in the first rod 4421, and the second rod 4422 is inserted into the cavity of the first rod 4421, and the second rod 4422 can move axially in the first rod 4421. In some alternative embodiments, the telescopic rod 442 may further include three or more segments.

[0076] In some alternative embodiments of the present invention, at least a part of the outer peripheral surface of the cam 433 is an arc structure. The lower end of the push rod 432 is also an arc structure. Through the above settings, the resistance of the cam 433 to rotate can be reduced, and the noise can be reduced.

[0077] As Figure 3 shown, in some alternative embodiments of the present invention, the rotation driving mechanism 434 is a second motor 4341, and the output shaft of the second motor 4341 is fixedly connected to the cam 433. An installation groove is provided at the end of the first driving rod 2, and the second motor 4341 is arranged in the installation groove. When in use, the second motor 4341 is started, and the output shaft of the second motor 4341 drives the cam 433 to rotate, and the cam 433 can change the position of the first driving rod 2 in the up-and-down direction. The rotation driving mechanism 434 of this embodiment has the advantages of simple structure and convenient production and manufacturing. In alternative embodiments, the rotation driving mechanism 434 may also adopt other rotation driving devices.

[0078] As Figures 1 to 3As shown, in some alternative embodiments of the present invention, the pipeline defect detection device further includes a fixing device 5 for fixedly installing the stopper 1 at the end of the pipeline to be detected. During detection, after the stopper 1 is abutted against the end of the pipeline to be detected, the position of the stopper 1 is fixed by the fixing device 5.

[0079] In this embodiment, by providing the fixing device 5, the shaking of the stopper 1 can be avoided, which affects the measurement accuracy. Therefore, during the detection process, there is no need for a special person to hold the stopper 1 by hand, nor is it necessary to externally add a fixing piece to fix the stopper 1, and the operation is simpler.

[0080] As Figure 2 and Figure 3 As shown, in some alternative embodiments of the present invention, the fixing device 5 includes a mounting frame 51, two clamping parts 52, and a second driving rod 53. The two clamping parts 52 can be separated or approached in the third direction. The clamping part 52 has a clamping mating surface for mating with the outer wall of the pipeline to be detected. Preferably, the clamping mating surface is an arc-shaped mating surface. The mounting frame 51 is fixedly provided on the outer periphery of the stopper 1, and a mounting hole extending in the third direction is provided on the mounting frame 51. Specifically, there are two mounting holes, which are symmetrically arranged on both sides of the stopper 1 in the radial direction. The second driving rod 53 is inserted into the mounting hole, and the second driving rod 53 is configured such that when the second driving rod 53 moves towards the side close to the first driving rod 2, it drives the two clamping parts 52 to approach each other to clamp the outer wall of the pipeline to be detected. The fixing device 5 of this embodiment has the advantages of simple structure, convenient assembly and manufacture, and convenient operation.

[0081] In some alternative embodiments of the present invention, the third direction is the front-back direction, and the mounting frame 51 includes a first right-angle arm and a second right-angle arm; one mounting hole is provided on each right-angle arm. In an alternative embodiment, the mounting frame 51 can also be of other shapes.

[0082] As Figures 1 to 2 As shown, in some alternative embodiments of the present invention, the cross-sections of the two clamping parts are both semi-circular structures. During use, the ends of the two clamping parts 52 can be abutted against each other, and the pipeline to be detected can be completely surrounded in the circumferential direction, so that the contact area between the clamping part 52 and the pipeline to be detected can be increased, and the connection between the two can be made more reliable. However, the size range of the pipeline to be detected applicable to this embodiment is relatively small.

[0083] As Figure 2As shown, in some alternative embodiments of the present invention, the fixing device 5 further includes a spring 54 and a limiting block 55. The limiting block 55 is provided at one end of the second driving rod 53 away from the clamping portion 52. One end of the spring 54 is fixedly connected to the limiting block 55, and the other end is fixedly connected to the mounting bracket 51. The spring 54 is configured to: drive the second driving rod 53 to move towards the side close to the clamping portion 52, so as to push the clamping portion 52 to clamp the outer wall of the pipeline to be detected. In this embodiment, the clamping portion 52 and the second driving rod 53 may be fixedly connected, or the clamping portion 52 and the second driving rod 53 may be a split structure.

[0084] In some other alternative embodiments of the present invention, the mounting hole is a first threaded hole, and the second driving rod 53 is provided with a threaded section, and the threaded section is in threaded cooperation with the first threaded hole. Specifically, the second driving rod 53 and the clamping portion 52 are a split structure. During use, insert the second driving rod 53 into the first threaded hole, and rotate the second driving rod 53 to make the end of the second driving rod 53 move towards the side of the pipeline to be detected until the second driving rod 53 presses the clamping portion 52 against the outer wall of the pipeline to be detected. Preferably, a third threaded hole adapted to the first threaded section is provided on the outer side wall of the clamping portion 52, so that the connection between the second driving rod 53 and the clamping portion 52 can be made more reliable.

[0085] In some alternative embodiments of the present invention, the linear driving mechanism 3 includes a movable plate 31, a threaded rod 32, and a first motor 33. One end of the movable plate 31 is fixedly connected to the end of the first driving rod 2, and a second threaded hole is opened on the movable plate 31. The threaded rod 32 is arranged in parallel and spaced apart from the first driving rod 2, and the threaded rod 32 is in threaded connection with the second threaded hole. The first motor 33 is used to drive the threaded rod 32 to rotate, so as to drive the movable plate 31 to move in the first direction. During use, start the first motor 33, the output shaft of the first motor 33 drives the threaded rod 32 to rotate, and under the action of the threaded cooperation between the threaded rod 32 and the second threaded hole, the threaded rod 32 will drive the first driving rod 2 to move along its axial direction. The linear driving mechanism 3 of this embodiment has the advantages of simple structure and being convenient for manufacturing and assembly.

[0086] Furthermore, in order to improve the installation stability of the stopper 1, the linear driving mechanism 3 further includes a mounting seat 34. One end of the mounting seat 34 is fixedly connected to the stopper 1, and the other end is provided with the first motor 33. Further, the mounting seat 34 includes a horizontal plate and a vertical plate. One end of the horizontal plate is fixedly connected to the stopper 1, and the other end is fixedly connected to the vertical plate, and the first motor 33 is installed on the vertical plate.

[0087] Still further, a relief hole is opened on the stopper 1, and a bearing is sleeved on one end of the threaded rod 32 away from the first motor 33 and is inserted into the above-mentioned relief hole. Through the above setting, the relief hole has a supporting effect on the threaded rod 32 and can improve the installation stability of the threaded rod 32.

[0088] In some alternative embodiments of the present invention, the detection unit includes an ultrasonic probe, and the ultrasonic probe is used to perform ultrasonic detection on the inside of the pipeline. Ultrasonic detection is a detection method using ultrasonic technology and is one of the five conventional non-destructive testing methods. The working principle of ultrasonic detection is as follows: the acoustic performance differences between the material and its defects are used to examine the internal defects of the material by the reflection of the ultrasonic wave propagation waveform and the energy change of the penetration time. In an alternative embodiment, the detection unit can also be other detection devices.

[0089] The embodiment of the present invention also provides a pipeline defect detection method, which is applicable to the pipeline defect detection device described in any of the above embodiments. The detection method may include the following steps:

[0090] S100, insert the detection mechanism 4 into the pipeline to be detected;

[0091] S200, abut the stopper 1 against the end of the pipeline to be detected;

[0092] S300, start the detection mechanism 4 and the linear drive mechanism 3, and the linear drive mechanism 3 drives the first drive rod 2 to move at a preset speed, so that the detection mechanism 4 performs automatic detection along the axial direction of the pipeline to be detected.

[0093] Specifically, the preset speed can be a fixed value. The preset speed can also not be a fixed value, and the preset speed can be set according to the specific dimensions of the pipeline to be detected and requirements such as inspection accuracy.

[0094] The detection method of this embodiment is simple to operate and has high inspection efficiency. It can automatically detect the inner wall of the pipeline to be detected along the axial direction, and can effectively avoid missed detection.

[0095] In some alternative embodiments of the present invention, the detection method may further include the following steps:

[0096] S400, obtain the wall thickness and / or inner diameter of the pipeline to be detected;

[0097] S500, obtain the preset speed according to the wall thickness and / or inner diameter of the pipeline to be detected.

[0098] Specifically, steps S400 and S500 have no sequence with steps S100 and S200.

[0099] Since the wall thickness and / or inner diameter of the pipeline to be detected are different, the inspection range of the detection mechanism 4 is different. For pipelines to be detected with different specifications, when the detection mechanism 4 moves at the same speed, the accuracy of the finally obtained detection data is different. Therefore, in order to balance the detection accuracy and detection efficiency, this embodiment determines the moving speed of the detection mechanism 4 along the axial direction of the pipeline according to the wall thickness and inner diameter of the pipeline to be detected.

[0100] This embodiment may include the following three cases:

[0101] The first case: Obtain the wall thickness and inner diameter of the pipeline to be detected; According to the wall thickness and inner diameter of the pipeline to be detected, obtain the preset speed. Specifically, the preset speed can be obtained according to the wall thickness and inner diameter dimensions of the pipeline to be detected and combined with a certain algorithm.

[0102] The second case: Obtain the wall thickness of the pipeline to be detected; According to the wall thickness of the pipeline to be detected, obtain the preset speed. Preferably, the preset speed is negatively correlated with the wall thickness of the pipeline to be detected; that is to say, the larger the wall thickness dimension of the pipeline to be detected, the smaller the preset speed; conversely, the smaller the wall thickness dimension, the larger the preset speed.

[0103] The third case: Obtain the inner diameter of the pipeline to be detected; According to the inner diameter of the pipeline to be detected, obtain the preset speed. Preferably, the preset speed is negatively correlated with the inner diameter of the pipeline to be detected; that is to say, the larger the inner diameter dimension of the pipeline to be detected, the smaller the preset speed; conversely, the smaller the inner diameter dimension, the larger the preset speed.

[0104] Among the above three cases, the first case is the preferred solution, and the obtained preset speed is more scientific and reasonable, which is more conducive to balancing the detection accuracy and detection efficiency.

[0105] In some alternative embodiments of the present invention, the detection mechanism 4 includes a detection part and an adjustment mechanism. The adjustment mechanism is used to adjust the position of the detection part in the second direction, and the second direction is perpendicular to the first direction.

[0106] In step S300, starting the detection mechanism 4 specifically may include the steps of: starting the adjustment mechanism, adjusting the position of the detection part in the second direction so that the detection part contacts or approaches the inner wall of the pipeline to be detected; starting the detection part.

[0107] In this embodiment, adjusting the position of the detection part in the second direction before starting the detection part can further improve the detection accuracy.

[0108] In some alternative embodiments of the present invention, in step S300, starting the detection mechanism 4 specifically may include the steps of: starting the adjustment mechanism, adjusting the position of the detection part in the second direction according to the inner diameter of the pipeline to be detected so that the detection part contacts or approaches the inner wall of the pipeline to be detected; starting the detection part.

[0109] In this embodiment, adjusting the position of the detection part in the second direction according to the inner diameter of the pipeline to be detected can further improve the detection accuracy.

[0110] In some alternative embodiments of the present invention, the detection method further includes: obtaining the axial dimension information of the pipeline to be detected. Step S500 specifically includes: obtaining a preset speed according to the wall thickness and / or inner diameter and / or axial dimension information of the pipeline to be detected. Preferably, the preset speed is obtained according to the wall thickness, inner diameter, and axial dimension information of the pipeline to be detected; so that when the pipeline to be detected includes pipe sections of different specifications, the detection mechanism 4 can execute different moving speeds in the pipe sections of different specifications, thereby better balancing the detection accuracy and detection efficiency.

[0111] In some alternative embodiments of the present invention, after step S300, the detection method may further include the following steps: S600, during the process of the detection mechanism 4 moving axially along the pipeline to be detected, adjusting the position of the detection part in the second direction according to the real-time inner diameter of the detection pipeline. In the scenario where the inner diameter of the pipeline is not a single size, adopting the above method can further improve the detection accuracy.

[0112] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

[0113] In the description of this embodiment, the description of reference terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, devices, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, devices, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. A pipeline defect detection device, characterized in that: include: A stopper, used to stop at the end of the pipeline to be detected, and a first through hole is formed on the stopper; A first driving rod, the first driving rod is inserted into the first through hole, and the axial direction of the first driving rod is a first direction; A linear drive mechanism, disposed at one end of the first drive rod, and used to drive the first drive rod to move along the first direction; The detection mechanism is arranged at the other end of the first driving rod and is used to detect defects on the inner wall of the pipeline to be detected.

2. The pipeline defect detection device according to claim 1, characterized in that: The detection mechanism includes: Testing Department; The adjusting mechanism is used to adjust the position of the detecting portion in a second direction, where the second direction is perpendicular to the first direction.

3. The pipeline defect detection device according to claim 2, characterized in that: The detection portion includes a first detection portion and a second detection portion, and the first detection portion and the second detection portion are arranged at intervals along the second direction; The adjustment mechanism is configured to adjust the distance between the first detection portion and the second detection portion in the second direction.

4. The pipeline defect detection device according to claim 3, characterized in that: The second direction is a vertical direction; The adjustment mechanism includes a first adjustment mechanism and a second adjustment mechanism; The first adjustment mechanism comprises: A first mounting arm is fixedly mounted on the upper side of the first driving rod, and the first mounting arm is provided with a first through hole penetrating vertically; A push rod is inserted into the first through hole, and the first detection part is arranged at the upper end of the push rod; A cam is located at the lower end of the push rod, and the cam is connected to a rotation driving mechanism for driving the cam to rotate around the first axis to drive the push rod to move up and down; The second adjustment mechanism comprises: A second mounting arm, fixedly mounted on the lower side of the first driving rod; A telescopic rod, the upper end of which is fixedly connected to the second mounting arm, and the lower end of which is provided with the second detection part; the telescopic rod is configured to: extend and retract along the up and down direction to drive the second detection part to move up and down.

5. The pipeline defect detection device according to claim 1, characterized in that: Also includes: The fixing device is used to fix the stopper to the end of the pipeline to be detected.

6. The pipeline defect detection device according to claim 5, characterized in that: The fixing device comprises: Two clamping parts can be separated or brought closer in a third direction; A mounting frame, fixedly mounted on the outer periphery of the stopper, and provided with a mounting hole extending along a third direction; The second driving rod is inserted into the installation hole, and the second driving rod is configured to drive the two clamping parts to approach each other when the second driving rod moves toward the side close to the first driving rod, so as to clamp the outer wall of the pipeline to be detected.

7. The pipeline defect detection device according to claim 6, characterized in that: The fixing device also includes a spring and a limit block, wherein the limit block is arranged at one end of the second driving rod away from the clamping portion, one end of the spring is fixedly connected to the limit block, and the other end is fixedly connected to the mounting frame; the spring is configured to: drive the second driving rod to move toward a side close to the clamping portion to push the clamping portion to clamp the outer wall of the pipe to be inspected.

8. The pipeline defect detection device according to claim 1, characterized in that: The linear drive mechanism comprises: A movable plate, one end of which is fixedly connected to the end of the first driving rod, and a second threaded hole is formed on the movable plate; a threaded rod, the threaded rod being arranged parallel to and spaced apart from the first driving rod, and the threaded rod being threadedly connected to the second threaded hole; a first motor, used for driving the threaded rod to rotate, so as to drive the movable plate to move along the first direction; A mounting seat, one end of which is fixedly connected to the stopper, and the other end of which is mounted with the first motor.

9. A pipeline defect detection method, characterized in that: The detection method is applicable to the pipeline defect detection device according to any one of claims 1 to 8, and the detection method comprises: Inserting the detection mechanism into the pipeline to be detected; The stopper is brought into contact with the end of the pipeline to be inspected; The detection mechanism and the linear drive mechanism are started, and the linear drive mechanism drives the first drive rod to move at a preset speed, so that the detection mechanism performs automatic detection along the axial direction of the pipeline to be detected.

10. The pipeline defect detection method according to claim 9, characterized in that: The detection method is applicable to the pipeline defect detection device according to claim 2; The detection method further comprises: Obtaining wall thickness and / or inner diameter and / or axial dimension information of the pipeline to be inspected; Acquire the preset speed according to the wall thickness and / or the inner diameter and / or the axial dimension information; The startup detection mechanism comprises: The adjusting mechanism is started to adjust the position of the detection part in the second direction according to the inner diameter so that the detection part contacts or approaches the inner wall of the pipeline to be detected; and the detection part is started.

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