A device for detecting defects in bends of polyethylene pipes

Abstract

The utility model discloses a kind of bend defect detection devices suitable for polyethylene pipeline, realize the high-precision, high-efficiency defect detection of polyethylene pipeline and its bend, it includes ultrasonic testing component, drive component, connecting component and self-adapting component, ultrasonic testing component includes first annular support, first walking wheel, first drive motor, first motor base and ultrasonic detector that follow first drive motor annularly moves, annular slide rail structure is equipped between first motor base and first annular support;Drive component includes second annular support, second walking wheel, second drive motor, second motor base and connecting piece connecting second motor base and second annular support;Connecting component connects drive component and ultrasonic testing component;Self-adapting component one end is supported on the outer wall of pipeline and rolls, and the other end is equipped with movable support structure between first annular support.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline inspection technology, specifically a detection device for bends in polyethylene pipelines. Background Technology

[0002] Polyethylene (PE) pipes are widely used in various industries, including petroleum, chemical, natural gas, and urban water supply and drainage, due to their advantages such as corrosion resistance, long service life, light weight, and convenient installation and transportation. During the use of PE pipes, bends are prone to defects such as cracks and holes due to stress concentration and fluid erosion. If these defects are not detected and addressed promptly, they may lead to pipe leaks or even more serious safety accidents. Therefore, effective inspection of PE pipe bends is particularly important.

[0003] Currently, there are various methods for detecting defects in polyethylene pipes, such as magnetic particle testing, X-ray testing, magnetic flux leakage testing, and pressure testing. However, these traditional methods have some limitations when applied to the inspection of bends in polyethylene pipes. For example, X-ray testing is costly, slow, and poses a hazard of ionizing radiation; magnetic flux leakage testing lacks sufficient sensitivity for detecting certain types of defects. Furthermore, the unique shape of pipe bends increases the difficulty of inspection, and traditional testing equipment and methods are insufficient in terms of adaptability.

[0004] Therefore, there is a need for a detection device specifically designed for bends in polyethylene pipes, capable of efficiently and accurately detecting defects at bends, while also possessing good adaptability and ease of operation to meet the detection requirements in practical applications. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a bend defect detection device suitable for polyethylene pipes, so as to realize high-precision and high-efficiency defect detection of polyethylene pipes and their bends.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A device for detecting bend defects in polyethylene pipes, comprising: An ultrasonic testing assembly includes a first annular support, a first traveling wheel, a first drive motor for driving the first traveling wheel to move circumferentially along the annular support, a first motor mount for mounting the first drive motor, and an ultrasonic detector that moves circumferentially following the first drive motor. An annular slide rail structure is provided between the first motor mount and the first annular support. A drive assembly is arranged side by side with an ultrasonic detection assembly. The drive assembly includes a second annular bracket, a second traveling wheel, a second drive motor for driving the second traveling wheel to move along the pipe extension direction, a second motor base for mounting the second drive motor, and a connector connecting the second motor base and the second annular bracket. A connecting component connects the driving component and the ultrasonic detection component, thereby enabling the driving component to move the ultrasonic detection component; An adaptive component, one end of which is rolled and supported on the outer wall of the pipe, and the other end of which is provided with a movable support structure between it and the first annular support.

[0007] Preferably, the adaptive component includes a universal hub that is rolled on the outer wall of the pipe, and the movable support structure includes an adaptive telescopic rod that connects the universal hub and the first annular bracket.

[0008] Preferably, the adaptive telescopic rod includes an outer telescopic rod, an inner telescopic rod that is movably inserted into the inner hole of the outer telescopic rod, and an elastic element disposed in the inner hole of the outer telescopic rod and elastically abutting against the inner telescopic rod.

[0009] Preferably, one end of the outer telescopic rod is connected to the universal wheel hub, and one end of the inner telescopic rod is connected to the first annular bracket; and / or, the elastic element is a spring.

[0010] Preferably, the connecting component has a universal joint structure.

[0011] Preferably, the connecting assembly includes a spherical connector connected to one of the driving assembly and the ultrasonic detection assembly, and a spherical shell connector connected to the other, wherein the spherical connector and the spherical shell connector form a universal joint structure.

[0012] Preferably, the first annular bracket includes a first annular slot body and a first annular slot assembly disposed radially outside the first annular slot body. The first annular slot body is composed of two semi-annular slots, and the first annular slot assembly is composed of two semi-annular slots.

[0013] Preferably, the annular slide rail structure includes a slide groove disposed between the first annular slot body and the first annular slot assembly, and the first motor base is provided with a slider, the slider being slidably engaged with the slide groove.

[0014] Preferably, the second annular bracket includes a second annular slot body and a second annular slot assembly disposed radially outside the second annular slot body. The second annular slot body is composed of two semi-annular slots, and the second annular slot assembly is composed of two semi-annular slots.

[0015] Preferably, a sliding groove for connecting the second annular slot body and the second annular slot assembly is provided, and the connecting assembly is provided with a slider that cooperates with the sliding groove.

[0016] The present invention adopts the above technical solution and has the following technical effects: The ultrasonic testing component includes a first annular support, a first traveling wheel, a first drive motor for driving the first traveling wheel to move circumferentially along the annular support, a first motor mount for mounting the first drive motor, and an ultrasonic detector that moves circumferentially following the first drive motor. An annular slide rail structure is provided between the first motor mount and the first annular support. Therefore, by driving the first traveling wheel to rotate through the first drive motor, the first traveling wheel moves circumferentially along the first annular support, thereby driving the ultrasonic detector on the side of the first drive motor to move circumferentially, as well as to perform positioning and ultrasonic testing, thereby realizing the circumferential testing of the pipeline.

[0017] The drive assembly and the ultrasonic testing assembly are arranged side by side. The drive assembly includes a second annular bracket, a second traveling wheel, a second drive motor for driving the second traveling wheel to move along the pipe extension direction, a second motor base for mounting the second drive motor, and a connector connecting the second motor base and the second annular bracket. Therefore, the second driving motor drives the second traveling wheel to rotate, and the second traveling wheel moves along the pipe extension direction, thereby driving the ultrasonic testing assembly to move together for axial movement and positioning. Then, the ultrasonic testing assembly can perform full-circumference ultrasonic testing, thereby realizing the testing of the entire length of the pipe.

[0018] Because the connecting component connects the drive component and the ultrasonic testing component, the drive component moves the ultrasonic testing component together. Furthermore, the connecting component allows for relative movement between the drive component and the ultrasonic testing component, enabling high-precision and high-efficiency defect detection through curves.

[0019] One end of the adaptive component is rolled and supported on the outer wall of the pipe, while the other end is provided with a movable support structure between it and the first annular bracket, so that the detection probe of the ultrasonic detector can fit the curved contour of polyethylene pipes of different diameters and bends.

[0020] Therefore, this utility model achieves circumferential and axial positioning and detection functions by combining the ultrasonic detection component and the drive component for circumferential and axial driving. It can accurately locate defects in polyethylene pipes and bends, thereby improving service life by timely preventing cracks caused by defects.

[0021] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0022] The utility model will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of a portable defect detection device for polyethylene pipes provided in an embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the driving component provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the adaptive component provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the connecting component provided in this utility model; Figure 5 This is a schematic diagram of the structure of the ultrasonic testing component provided in this embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of the ultrasonic testing component provided in an embodiment of the present invention; In the diagram: A, drive assembly; A1, second drive motor; A2, second traveling wheel; A3, connector; A4, second annular slot body; A5, second annular slot assembly; B. Adaptive components; B1. Universal wheel hub; B2. Adaptive telescopic pole; C. Connecting components; C1. Spherical connector; C2. Spherical shell connector; D. Ultrasonic testing component; D1. Ultrasonic detector; D2. First drive motor; D3. First traveling wheel; D4. First motor base; D5. First annular slot body; D6. First annular slot assembly. Detailed Implementation

[0023] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0024] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0025] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," "rear," and "lateral," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0029] like Figures 1 to 6 As shown, this utility model embodiment provides a device for detecting internal defects in polyethylene pipes and bends, aiming to achieve high-precision defect detection on the outer wall of the pipe and areas prone to cracking and corrosion. It includes a drive assembly A for moving the drive device at the polyethylene pipe and bend, an adaptive assembly B placed on the outer wall of the pipe and assisting in the positioning of the ultrasonic detection assembly D, and a connecting assembly C for fixing the drive assembly A and the ultrasonic detection assembly D relatively.

[0030] The ultrasonic testing component D includes a first annular support. The driving component A is arranged side by side with the ultrasonic testing component D, and the driving component A includes a second annular support. The connecting component C connects the driving component A and the ultrasonic testing component D, thereby enabling the driving component to move the ultrasonic testing component. One end of the adaptive component B is rolled and supported on the outer wall of the pipe, and the other end is provided with a movable support structure between it and the first annular support.

[0031] The working principle of a polyethylene pipe and bend internal defect detection device provided in this embodiment is as follows: The first step is to use the drive component and the adaptive component to accurately position the entire device, so that the ultrasonic testing component can find the appropriate location to detect pipeline defects.

[0032] The second step involves using a connecting component to fix the drive component and the ultrasonic detection component in relative place, allowing the entire device to automatically pass through the entire pipeline.

[0033] The third step involves using the rotation of the ultrasonic testing components to make the ultrasonic detector move in a circular motion, thereby achieving all-round, no-dead-angle defect detection of the polyethylene pipe.

[0034] like Figure 2 As shown, the driving component A in this embodiment includes a second traveling wheel A2, a second driving motor A1 for driving the second traveling wheel A2 to move along the pipe extension direction, a second motor base for mounting the second driving motor, and a connector A3 connecting the second motor base and the second annular bracket. The second annular bracket includes a second annular groove body A4 and a second annular groove assembly A5 located radially outside the second annular groove body. The second annular groove body A4 is composed of two semi-annular grooves, and the second annular groove assembly A5 is also composed of two semi-annular grooves, facilitating the ring's installation on the outside of the pipe. A sliding groove connecting the second annular groove body and the second annular groove assembly is provided between them, and the connecting assembly has a slider that cooperates with the sliding groove. This allows the driving component and the pipe wall to be relatively fixed. When the position is properly adjusted, the second driving motor A1 drives the component forward. During the driving process, the second driving motor A1 provides power, which is transmitted through the second traveling wheel A2 and the connector A3, enabling the entire device to move stably along the pipe.

[0035] like Figure 3As shown, the adaptive component B in this utility model embodiment includes a universal hub B1 and an adaptive telescopic rod B2. The universal hub B1 can be connected to the first annular bracket via the adaptive telescopic rod B2. The universal hub B1 can move in multiple directions, facilitating comprehensive inspection by the ultrasonic testing component. Through the relative extension and retraction of the adaptive telescopic rod B2, the ultrasonic testing component can inspect polyethylene pipes and bends of different diameters. The adaptive telescopic rod B2 connects the universal hub B1 and the first annular bracket. The adaptive telescopic rod B2 includes an outer telescopic rod, an inner telescopic rod that is movably inserted into the inner hole of the outer telescopic rod, and an elastic element that elastically abuts against the inner telescopic rod within the inner hole of the outer telescopic rod. One end of the outer telescopic rod is connected to the universal hub, and one end of the inner telescopic rod is connected to the first annular bracket. The elastic element is a spring. A limiting groove is provided on the side wall of the outer telescopic rod, and a limiting pin is connected to the inner telescopic rod. The limiting pin passes through the limiting groove, thereby restricting the relative movement between the outer and inner telescopic rods. Because the omnidirectional hub is dynamically connected to the ultrasonic testing component D via an adaptive telescopic rod, its multi-directional rotation characteristics allow the testing probe to conform to the curved contours of polyethylene pipes of different diameters and bends. The adaptive telescopic rod automatically adjusts according to pipe deformation during testing, ensuring comprehensive coverage of the testing device while avoiding blind spots caused by mechanical interference.

[0036] like Figure 4 As shown, the connecting component C has a universal joint structure. In this embodiment, the connecting component C includes a spherical connector C1 and a spherical shell connector C2. The spherical connector C1 is connected to one of the driving component and the ultrasonic testing component, and the spherical shell connector C2 is connected to the other. Furthermore, the spherical connector and the spherical shell connector form a universal joint structure. The combination of the spherical connector C1 and the spherical shell connector C2 can effectively transmit the driving force of the driving component A to the ultrasonic testing component D. During the connection process, the spherical connector C1 can adapt to the rotation at the bend, stably transmitting the driving force to the ultrasonic testing component D, ensuring the normal operation of the device at the bend. Moreover, the spherical connector allows for reasonable adjustment up to the specified angle parameters. Of course, the universal joint structure can also be replaced by other common universal joint structures.

[0037] like Figure 5 and Figure 6As shown, the ultrasonic testing component D in this embodiment includes a first traveling wheel D3, a first drive motor D2 for driving the first traveling wheel to move circumferentially along an annular support, a first motor mount D4 for mounting the first drive motor, and an ultrasonic detector D1 that moves circumferentially following the first drive motor. An annular slide rail structure is provided between the first motor mount D4 and the first annular support. The first annular support includes a first annular slot body D5 and a first annular slot assembly D6 located radially outside the first annular slot body. The first annular slot body D5 is composed of two semi-annular slots, and the first annular slot assembly D6 is also composed of two semi-annular slots, facilitating the installation of the ring on the outside of the pipe. The annular slide rail structure includes a groove between the first annular slot body and the first annular slot assembly. The first motor mount D4 has a slider that slides in conjunction with the groove. The first drive motor D2 drives the first traveling wheel D4 to rotate on the first annular slot body D5 and the first annular slot assembly D6, allowing the ultrasonic detector D1 to perform ultrasonic testing around the wall of the polyethylene pipe. During the testing process, the rotation of the first drive motor D2 drives the first traveling wheel D3 to move smoothly, ensuring that the ultrasonic detector D1 fits tightly against the pipe wall, achieving all-round, blind-spot-free testing. Preferably, the first drive motor is a stepper motor, and the first traveling wheel is a rubber wheel.

[0038] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A device for detecting bend defects in polyethylene pipes, characterized in that, include: An ultrasonic testing assembly includes a first annular support, a first traveling wheel, a first drive motor for driving the first traveling wheel to move circumferentially along the annular support, a first motor mount for mounting the first drive motor, and an ultrasonic detector that moves circumferentially following the first drive motor. An annular slide rail structure is provided between the first motor mount and the first annular support. A drive assembly is arranged side by side with an ultrasonic detection assembly. The drive assembly includes a second annular bracket, a second traveling wheel, a second drive motor for driving the second traveling wheel to move along the pipe extension direction, a second motor base for mounting the second drive motor, and a connector connecting the second motor base and the second annular bracket. A connecting component connects the driving component and the ultrasonic detection component, thereby enabling the driving component to move the ultrasonic detection component; An adaptive component, one end of which is rolled and supported on the outer wall of the pipe, and the other end of which is provided with a movable support structure between it and the first annular support.

2. The device for detecting bend defects in polyethylene pipes according to claim 1, characterized in that, The adaptive component includes a universal hub that is rolled and supported on the outer wall of the pipe, and the movable support structure includes an adaptive telescopic rod that connects the universal hub and the first annular bracket.

3. The device for detecting bend defects in polyethylene pipes according to claim 2, characterized in that, The adaptive telescopic rod includes an outer telescopic rod, an inner telescopic rod that is movably inserted into the inner hole of the outer telescopic rod, and an elastic element that is disposed in the inner hole of the outer telescopic rod and elastically abuts against the inner telescopic rod.

4. The device for detecting bend defects in polyethylene pipes according to claim 3, characterized in that, One end of the outer telescopic rod is connected to the universal wheel hub, and one end of the inner telescopic rod is connected to the first annular bracket; and / or, the elastic element is a spring.

5. The device for detecting bend defects in polyethylene pipes according to claim 1, characterized in that, The connecting component is equipped with a universal joint structure.

6. The device for detecting bend defects in polyethylene pipes according to claim 5, characterized in that, The connecting assembly includes a spherical connector connected to one of the driving assembly and the ultrasonic detection assembly, and a spherical shell connector connected to the other, forming a universal joint structure between the spherical connector and the spherical shell connector.

7. The device for detecting bend defects in polyethylene pipes according to claim 1, characterized in that, The first annular bracket includes a first annular slot body and a first annular slot assembly disposed radially outside the first annular slot body. The first annular slot body is composed of two semi-annular slots, and the first annular slot assembly is composed of two semi-annular slots.

8. A device for detecting bend defects in polyethylene pipes according to claim 7, characterized in that, The annular slide rail structure includes a slide groove disposed between the first annular slot body and the first annular slot assembly, and the first motor base is provided with a slider, which slides in cooperation with the slide groove.

9. A device for detecting bend defects in polyethylene pipes according to claim 1, characterized in that, The second annular bracket includes a second annular slot body and a second annular slot assembly disposed radially outside the second annular slot body. The second annular slot body is composed of two semi-annular slots, and the second annular slot assembly is composed of two semi-annular slots.

10. A device for detecting bend defects in polyethylene pipes according to claim 9, characterized in that, The second annular slot body and the second annular slot assembly are provided with a sliding groove for connection to the connecting component, and the connecting component is provided with a slider that cooperates with the sliding groove.

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