Ultrasonic phase control full-ring flaw detection device suitable for polyethylene pipeline

Abstract

The ultrasonic phased full-ring flaw detection device comprises two fixing assemblies, two rotating assemblies and an ultrasonic phased array detection assembly, the two fixing assemblies are correspondingly arranged on the two axial sides of a pipeline welding seam, and the two rotating assemblies are correspondingly arranged on the two axial sides of the pipeline welding seam and connected with the fixing assemblies. The ultrasonic phased array detection assembly is connected between the two rotating assemblies, the ultrasonic phased array detection assembly comprises a connecting piece connected with the rotating assemblies and an ultrasonic phased array detector for conducting ultrasonic detection on a welding seam, and the rotating assemblies move in the circumferential direction of a pipeline and drive the ultrasonic phased array detection assembly to rotate around the whole circle of the welding seam of the pipeline. According to the utility model, the ultrasonic phased array detection assembly can rotate around the whole ring of the pipeline welding seam through the rotating assembly, so that the ultrasonic phased array detector can detect the whole ring of the pipeline welding seam.

Description

Technical field

[0001] The utility model belongs to the technical field of pipeline flaw detection, and in particular relates to a polyethylene pipeline ultrasonic flaw detection technology. [Background Technology]

[0002] Polyethylene pipes, due to their excellent corrosion resistance, low cost, and simple construction, are gradually replacing steel pipes and are increasingly being used in the urban gas transmission and distribution industry, playing a vital role in this sector. However, during the welding process of PE pipes, welded joints are often the weak link in the entire pipeline system, prone to various defects. These defects not only reduce the strength and service life of the pipes, but can also lead to serious water and gas leaks, endangering public safety.

[0003] Ultrasonic phased array technology electronically controls the transmission and reception of multiple array elements, enabling electronic scanning, focusing, and steering of the beam. This technology offers higher resolution and detection efficiency than traditional single-element ultrasonic testing. In particular, ultrasonic phased array technology can accurately detect and locate weld defects in PE pipe welds, significantly improving detection reliability and accuracy. For example, Chinese invention patent application publication number CN 108918677A discloses an ultrasonic phased array inspection method for hot-melt welded joints in gas polyethylene pipelines. This method employs ultrasonic phased array technology to perform flaw detection on hot-melt welded joints in polyethylene pipelines.

[0004] However, existing ultrasonic phased array inspection systems primarily focus on localized inspections, making it difficult to fully cover the entire weld, which can lead to the risk of missed inspections. This is particularly true for large-diameter PE pipes, where welds are often long and complex. Traditional inspection methods struggle to fully and effectively cover the entire weld area. Therefore, developing a system capable of performing a 360-degree inspection of PE pipe welds is crucial. [Utility Model Content]

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by the utility model is to provide an ultrasonic phase-controlled full-ring flaw detection device suitable for polyethylene pipes, which can realize 360-degree full-ring detection of PE pipe weld joints.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A device for ultrasonic phased array full-circle flaw detection of polyethylene pipelines includes a fixed component, a rotating component, and an ultrasonic phased array detection component. The two fixed components are correspondingly arranged on both axial sides of the pipeline weld, and the two rotating components are correspondingly arranged on both axial sides of the pipeline weld and connected to the fixed components. The ultrasonic phased array detection component is connected between the two rotating components. The ultrasonic phased array detection component includes a connector connected to the rotating component and an ultrasonic phased array detector for ultrasonically detecting the weld. The rotating component moves along the circumference of the pipeline and drives the ultrasonic phased array detection component to rotate around the full circumference of the pipeline weld.

[0008] Preferably, the rotating assembly includes an outer ring gear arranged around the circumference of the pipeline, a pinion gear meshing with the outer ring gear, and a rotating motor that drives the pinion gear to rotate while causing the pinion gear to revolve along the circumference of the outer ring gear. A rotating rod that follows the pinion gear in its revolution is connected between the pinions of the two rotating assemblies, and the rotating rod is connected to a connecting piece.

[0009] Preferably, the fixing assembly includes a fixing ring and a guide rail arranged around the circumference of the pipeline, and the guide rail is arranged on the fixing ring. The guide rail is slidably connected to a rotating slider, and the rotating slider is connected to the rotating motor.

[0010] Preferably, the rotating slider is provided with a mounting groove for mounting the rotating motor; and / or the rotating motor is fixed to the rotating slider by bolts.

[0011] Preferably, the guide rail is a dovetail guide rail, and the rotating slider is provided with a dovetail groove slidably connected to the dovetail guide rail.

[0012] Preferably, the guide rail is provided on the outer ring surface of the fixing ring, and the outer gear ring is connected to the end surface of the fixing ring.

[0013] Preferably, the guide rail is integrally provided with the fixing ring and the outer gear ring; and / or the fixing ring is fixed to the pipe by means of locking screws.

[0014] Preferably, the ultrasonic phased array detection assembly further includes an ultrasonic phased array trolley, and the connector and the ultrasonic phased array detector are correspondingly connected to the upper side and the lower side of the ultrasonic phased array trolley.

[0015] Preferably, the ultrasonic phased array cart includes an inverted U-shaped portion, side panels connected to both sides of the inverted U-shaped portion mouth and extending outward, axles connected to the side panels, and wheels connected to the axles. The ultrasonic phased array detector is arranged on the inner side of the inverted U-shaped portion, and the connecting piece is connected to the top wall of the inverted U-shaped portion.

[0016] Preferably, the connecting member includes two connecting arms arranged side by side and a connecting ring connected to the top ends of the connecting arms, and the connecting ring is connected to the rotating rod.

[0017] The utility model adopts the above technical solution, which has the following beneficial effects:

[0018] The axial positions of the two fixed components relative to the pipe weld are fixed. Since the two rotating components are correspondingly arranged on both sides of the axial direction of the pipe weld and connected to the fixed components, the axial positions of the two rotating components relative to the pipe weld are also fixed. In addition, the ultrasonic phased array detection component is connected to the middle of the two rotating components via a connector, so that the ultrasonic phased array detection component can rotate around the entire circumference of the pipe weld but cannot move axially, ensuring that the ultrasonic phased array detector can detect the entire circumference of the pipe weld.

[0019] The rotating assembly moves along the circumference of the pipeline and drives the ultrasonic phased array inspection assembly to rotate around the entire pipeline weld, enabling 360-degree inspection of PE pipeline weld joints, comprehensively and effectively covering the entire weld area. This ensures that every weld section is effectively covered during the inspection process, significantly reducing the risk of missed inspections. This comprehensiveness enables the timely detection of potential welding defects, improving pipeline safety and reliability.

[0020] The ultrasonic phased array inspection component includes an ultrasonic phased array detector for ultrasonic testing of welds. Using ultrasonic phased array technology, it can rapidly scan and locate weld defects, achieving higher detection efficiency and resolution than traditional single-element inspection methods. This not only reduces reliance on operator experience but also improves the accuracy of test results, making subsequent maintenance and management more scientific and effective.

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

Brief Description of the Drawings

[0022] The utility model is further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of an ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes provided by an embodiment of the present utility model;

[0024] Figure 2 It is a structural diagram of a fixed component and a rotating component provided by an embodiment of the utility model;

[0025] Figure 3 It is a structural schematic diagram of an ultrasonic phased array detection assembly provided by an embodiment of the present utility model;

[0026] In the figure: 1. Fixed component; 2. Rotating component; 3. Ultrasonic phased array detection component; 10. Fixed ring; 11. Rotating slider; 12. Guide rail; 20. Rotating motor; 21. Pinion; 22. Outer ring gear; 23. Rotating rod; 31. Ultrasonic phased array detector; 32. Connector; 33. Ultrasonic phased array trolley; 34. U-shaped part; 35. Side panel; 36. Axle; 37. Wheel; 38. Connecting arm, 39. Connecting ring. [Specific implementation method]

[0027] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0028] Those skilled in the art will appreciate that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0029] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. For example, the terms "upper," "lower," "front," and "rear" used below to indicate positions or locations are based on the positions or locations shown in the accompanying drawings and are used only to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be understood as limiting the utility model.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the present invention, the terms "install", "fix", "connect", "limit", "move", etc. should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] like Figures 1 to 3 As shown, the utility model provides an ultrasonic phased array full-ring flaw detection device suitable for polyethylene pipelines, including a fixed component 1, a rotating component 2 and an ultrasonic phased array detection component 3. The two fixed components 1 are correspondingly arranged on both axial sides of the pipeline weld, and the two rotating components 2 are correspondingly arranged on both axial sides of the pipeline weld and connected to the fixed component 1. The ultrasonic phased array detection component 3 is connected in the middle of the two rotating components. The ultrasonic phased array detection component 3 includes a connecting piece 32 connected to the rotating component 2 and an ultrasonic phased array detector 31 for ultrasonic detection of the weld. The rotating component 2 moves along the circumference of the pipeline and drives the ultrasonic phased array detection component to rotate around the full ring of the pipeline weld.

[0034] In the above technical solution, the axial positions of the two fixed components relative to the pipe weld are fixed. Since the two rotating components are correspondingly arranged on both axial sides of the pipe weld and connected to the fixed components, the axial positions of the two rotating components relative to the pipe weld are also fixed. In addition, the ultrasonic phased array detection component is connected between the two rotating components via a connector, so that the ultrasonic phased array detection component can rotate along the entire circumference of the pipe weld but cannot move axially, ensuring that the ultrasonic phased array detector can detect the entire circumference of the pipe weld.

[0035] The rotating assembly moves along the circumference of the pipeline and drives the ultrasonic phased array inspection assembly to rotate around the entire pipeline weld, enabling 360-degree inspection of PE pipeline weld joints, comprehensively and effectively covering the entire weld area. This ensures that every weld section is effectively covered during the inspection process, significantly reducing the risk of missed inspections. This comprehensiveness enables the timely detection of potential welding defects, improving pipeline safety and reliability.

[0036] The ultrasonic phased array inspection component includes an ultrasonic phased array detector for ultrasonic testing of welds. Using ultrasonic phased array technology, it can rapidly scan and locate weld defects, achieving higher detection efficiency and resolution than traditional single-element inspection methods. This not only reduces reliance on operator experience but also improves the accuracy of test results, making subsequent maintenance and management more scientific and effective.

[0037] In one embodiment, the rotating assembly 2 includes an outer ring gear 22 disposed around the circumference of the pipe, a pinion gear 21 meshing with the outer ring gear, and a rotating motor 20 that drives the pinion gear 21 to rotate while simultaneously causing the pinion gear to orbit along the circumference of the outer ring gear. A rotating rod 23 is connected between the pinions 21 of the two rotating assemblies, rotating along with the pinion gears. The rotating rod 23 is connected to a connector. The rotating motor 20 can be a stepper motor. When the rotating motor 20 is in operation, the pinion gear 21 connected to it rotates with the rotating motor 20, meshing and rotating around the fixed outer ring gear 22. This rotation simultaneously drives the operation of the ultrasonic phased array detection assembly 3 via the rotating rod 23.

[0038] As an embodiment, the fixing assembly 1 includes a fixing ring 10 and a guide rail 12 arranged around the circumference of the pipeline, and the guide rail is arranged on the fixing ring 10. The guide rail 12 is slidably connected to a rotating slider 11, and the rotating slider 11 is connected to a rotating motor 20.

[0039] Specifically, the rotating slider 11 is provided with a mounting groove for mounting the rotating motor, and the rotating motor 20 is fixed to the rotating slider with bolts. This can, to a certain extent, prevent damage to the motor due to external collisions during operation. The guide rail 12 is a dovetail-shaped guide rail, and the rotating slider 11 is provided with a dovetail groove that is slidably connected to the dovetail-shaped guide rail. The guide rail 12 is provided on the outer annular surface of the fixed ring, and the outer gear ring 22 is connected to the end face of the fixed ring 10. The guide rail 12 is integrally provided with the fixed ring 10 and the outer gear ring 22. The fixed ring 10 is fixed to the pipe with locking screws.

[0040] Furthermore, the ultrasonic phased array detection assembly 3 also includes an ultrasonic phased array carriage 33. The connector 32 and ultrasonic phased array detector 31 are connected to the upper and lower sides of the ultrasonic phased array carriage 33, respectively, with the radial direction of the pipeline as a reference, corresponding to the radially outer and inner sides, thereby bringing the ultrasonic phased array detector 31 close to the pipeline surface. The ultrasonic phased array carriage 33 includes an inverted U-shaped portion 34, side panels 35 extending outward from the mouth of the inverted U-shaped portion, an axle 36 connected to the side panels, and wheels 37 connected to the axle. The ultrasonic phased array detector 31 is located on the inner side of the inverted U-shaped portion 34, and the connector 31 is connected to the top wall of the inverted U-shaped portion 34.

[0041] Specifically, the connecting member 32 includes two connecting arms 38 arranged side by side and a connecting ring 39 connected to the top of the connecting arm, and the connecting ring 39 is connected to the rotating rod 23. In addition, a limiting ring can be provided on both axial sides of the connecting ring to cooperate with the upper limit groove on the rotating rod for limiting.

[0042] Working principle:

[0043] When the weld of a polyethylene pipe needs to be inspected, the fixing ring 10 in the fixing assembly 1 is first installed at appropriate positions on both sides of the pipe axial direction so that the ultrasonic phased array detection assembly 3 can fully detect the weld area. The rotating motor 20 is started, and the rotating slider 11 moves along the guide rail 12. At the same time, the pinion 21 rotates around the outer ring gear 22. The ultrasonic phased array trolley 33 is driven by the connection between the rotating rod 23 and the connecting piece 32 to circle the entire pipe weld and use the ultrasonic phased array detector 31 to perform defect detection.

[0044] 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 will understand that the utility model includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the utility model are intended to be included within the scope of the claims.

Claims

1. An ultrasonic phase-controlled full-ring flaw detection device suitable for polyethylene pipes, characterized in that: The ultrasonic phased array detection device comprises a fixed component, a rotating component and an ultrasonic phased array detection component. The two fixed components are correspondingly arranged on both sides of the axial direction of the pipeline weld, and the two rotating components are correspondingly arranged on both sides of the axial direction of the pipeline weld and connected to the fixed components. The ultrasonic phased array detection component is connected in the middle of the two rotating components. The ultrasonic phased array detection component includes a connector connected to the rotating component and an ultrasonic phased array detector for ultrasonically detecting the weld. The rotating component moves along the circumference of the pipeline and drives the ultrasonic phased array detection component to rotate around the pipeline weld in a full circle.

2. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 1, characterized in that: The rotating assembly includes an outer ring gear arranged around the circumference of the pipeline, a pinion gear meshing with the outer ring gear, and a rotating motor that drives the pinion gear to rotate while causing the pinion gear to revolve along the circumference of the outer ring gear. A rotating rod that revolves following the pinion gear is connected between the pinions of the two rotating assemblies, and the rotating rod is connected to a connecting piece.

3. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 2, characterized in that: The fixing assembly includes a fixing ring and a guide rail arranged around the circumference of the pipeline, and the guide rail is arranged on the fixing ring. The guide rail is slidably connected to a rotating slider, and the rotating slider is connected to a rotating motor.

4. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 3 is characterized in that: The rotating slider is provided with a mounting groove for mounting the rotating motor; and / or the rotating motor is fixed to the rotating slider by bolts.

5. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 3 is characterized in that: The guide rail is a dovetail guide rail, and the rotating slider is provided with a dovetail groove slidably connected to the dovetail guide rail.

6. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 3, characterized in that: The guide rail is arranged on the outer ring surface of the fixing ring, and the outer gear ring is connected to the end surface of the fixing ring.

7. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 6, characterized in that: The guide rail is integrally provided with the fixing ring and the outer gear ring; and / or the fixing ring is fixed to the pipe by means of locking screws.

8. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 2, characterized in that: The ultrasonic phased array detection assembly further includes an ultrasonic phased array trolley, and the connecting piece and the ultrasonic phased array detector are correspondingly connected to the upper side and the lower side of the ultrasonic phased array trolley.

9. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 8, characterized in that: The ultrasonic phased array trolley includes an inverted U-shaped portion, side panels connected to both sides of the inverted U-shaped portion and extending outward, a wheel axle connected to the side panels, and a wheel connected to the wheel axle. The ultrasonic phased array detector is arranged on the inner side of the inverted U-shaped portion, and the connecting piece is connected to the top wall of the inverted U-shaped portion.

10. The ultrasonic phase-controlled full-ring flaw detection device for polyethylene pipes according to claim 1, characterized in that: The connecting member includes two connecting arms arranged side by side and a connecting ring connected to the top ends of the connecting arms, and the connecting ring is connected to the rotating rod.

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