Phased array ultrasonic detection scanning device and detection system

Abstract

The utility model discloses a phased array ultrasonic detection scanning device and a detection system. A phased array ultrasonic detection scanning device comprises a main body framework, a stepping device, a guide device and a guide rail matched with the guide device, the main body framework is in an inverted T shape, the stepping device is arranged on the first side of the main body framework, and the guide device is arranged on the second side of the main body framework. And the stepping device is arranged at the upper part of the main body framework in a penetrating manner. The stepping device is provided with a through hole, the stepping device is fixedly installed on the upper portion of the main body framework through a connecting screw, and the connecting screw and the through hole are fixed in a matched mode. The stepping device is provided with through holes at equal intervals. By designing the structure and the shape of the main body framework, the space is reasonably utilized, and the device has the advantages of small size, high integration degree, high practicability and the like. The installation position of the stepping device can be adjusted, so that the probe can be adjusted more flexibly.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic detection, in particular to a phased array ultrasonic detection scanning device and a detection system. Background Art

[0002] In industries such as power, petroleum, and chemicals, fluids are often transported via pipelines. Effective quality inspection of pipeline weld joints is crucial for ensuring long-term safe operation. Internal weld defects are typically detected using radiographic or ultrasonic testing methods, though ultrasonic testing is typically the only method used for thick-walled pipeline welds. With the increasing use of pipeline parameters and the development and application of new inspection technologies, phased array ultrasonic testing (PAUT) has become widely used for internal defect detection in pipeline welds, offering superior performance compared to conventional ultrasonic testing.

[0003] As a new detection technology, phased array ultrasonic testing has extremely high requirements for the execution of the detection process. When using phased array ultrasonic testing methods to detect pipeline welds, the detection process is first designed based on the pipeline wall thickness and weld morphology. It mainly includes the detection angle range, detection step (the distance from the probe sound beam incident point to the weld center), etc. The mutual coordination of various contents ensures that the sound beam fully covers the weld area. During detection, a non-parallel scanning method is generally used to inspect the weld. That is, the probe moves along the circumference of the weld, and the relative distance between the probe and the weld remains unchanged. The detection data is collected by an external encoder. The probe clamping method is generally divided into handheld, manual scanning frame or electric scanning frame.

[0004] During actual inspections, manual scanning can be subject to significant inaccuracies in probe positioning and coupling. Existing scanning devices require significant space and, due to poor pipe surface conditions and relatively small pipe diameters, often exhibit movement deviations, magnetic wheel slippage, and other issues. Furthermore, the scanning devices are bulky, making installation difficult on small-diameter pipes and causing device movement jams. These issues can cause data collection to deviate from the inspection process design and result in missed detections. Minor deviations during inspection are particularly difficult to detect during scanning, yet they can significantly impact the reliability of test results. Utility Model Content

[0005] In view of this, the utility model provides a phased array ultrasonic detection scanning device, which solves the problems of existing scanning devices such as large size, limited application environment, easy deviation or jamming during movement, and magnetic wheel slippage.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A phased array ultrasonic detection and scanning device includes a main frame, a stepping device, a guide device and a guide rail cooperating with the guide device. The main frame is in a convex shape, the stepping device is provided on a first side of the main frame, and the guide device is provided on a second side of the main frame.

[0008] Preferably, the stepping device is arranged through the upper part of the main body frame.

[0009] Preferably, the stepping device is provided with a through hole, and the stepping device is fixedly mounted on the upper portion of the main frame by connecting screws, and the connecting screws are fixed in cooperation with the through hole.

[0010] Preferably, the stepping device is provided with through holes at equal intervals. The installation position of the stepping device and the main frame is adjustable.

[0011] Preferably, the phased array ultrasonic detection and scanning device also includes a clamping device, a cover plate is provided at one end of the main body, a fixing frame is provided at the other end of the main body, a second tension spring is symmetrically provided at the lower part of the cover plate, the cover plate is connected to one side of the end of the stepping device through the second tension spring in a pull ring type, and the other side of the end of the stepping device is connected to the fixing frame through the extension spring.

[0012] Preferably, one end of the probe clamping device is fixedly connected to the fixing frame, and the other end of the probe clamping device is provided with a probe.

[0013] Preferably, a stabilizing pressure wheel is provided at the bottom of the main frame, and each group of the stabilizing pressure wheels is arranged in pairs. The middle of the paired stabilizing pressure wheels is fixedly connected to the lower part of the column, and the column is provided with a first tension spring, and one end of the first tension spring is fixedly connected to the main frame.

[0014] Preferably, the guide device includes two symmetrical L-shaped guide structures and auxiliary rollers arranged at the lower part of the guide structures.

[0015] Preferably, a handle is provided on the side of the main frame for manually moving the device.

[0016] A phased array ultrasonic detection system comprises any one of the above-mentioned phased array ultrasonic detection scanning devices.

[0017] As can be seen from the above technical solution, the present invention utilizes space efficiently through the design of the main frame structure and shape, resulting in advantages such as compact size, high integration, and high practicality. Existing devices often utilize chain rollers that roll along the circumference of the pipe, with a few employing track-type scanners. The main drive frame of a track-type scanner is typically 300mm long, 300mm wide, and 200mm high, with an axial stepping mechanism measuring approximately 1000mm. This makes it suitable only for scanning large-diameter pipes with a diameter of approximately 300mm or greater.

[0018] The installation position of the stepping device of the present invention is adjustable, so that the adjustment of the probe is more flexible. The present invention also includes a clamping device, which cooperates with the stepping device and the probe clamping device to keep the probe more stable and prevent it from shaking during movement. The stabilizing pressure wheel in the present invention can improve the coordination between the guide device and the guide rail, and the device is firmly combined with the rail, and moves smoothly without deviation. Combined with the overall design, the present invention can ensure the consistency between the relative position between the probe and the weld and the process requirements when collecting detection data for pipeline welds, has good detection effect, and has good practicality. The present invention is particularly suitable for the detection of large and medium diameter pipeline welds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the phased array ultrasonic detection and scanning device in Example 1.

[0021] Among them, 1 is the main frame, 2 is the stepping device, 3 is the probe clamping device, 4 is the guiding device, 5 is the guide rail, and 6 is the pressing device.

[0022] Figure 2 This is a top view of the phased array ultrasonic detection and scanning device of Example 1.

[0023] Among them, 1 is the main frame, 11 is the stabilizing pressure wheel, 2 is the stepping device, 3 is the probe clamping device, and 6 is the pressing device.

[0024] Figure 3 This is a top view of the stepping device in Example 1.

[0025] Figure 4 This is a side view of the clamping device of Example 1,

[0026] Among them, 2 is a stepping device, 3 is a probe clamping device, 61 is a cover plate, 62 is a fixing frame, 63 is a second tension spring, and 64 is an extension spring.

[0027] Figure 5 Schematic diagram of different states of the clamping device in Example 1.

[0028] Figure 6 This is a schematic diagram of different states of the stabilizing pressure wheel in Example 1.

[0029] Among them, 1 is the main frame, 11 is the stabilizing pressure wheel, 12 is the vertical cylinder, and 13 is the first tension spring. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In this utility model, terms such as "upper," "lower," "front," "back," and "bottom" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended to better describe the utility model and its embodiments and are not intended to limit the devices or components indicated to specific positions, or to be constructed or operated in a specific position.

[0032] A phased array ultrasonic inspection and scanning device comprises a main frame, a stepping device, a guide device, and a guide rail for cooperating with the guide device. The main frame is convex-shaped and can be integrally formed. The stepping device is disposed on a first side of the main frame, and the guide device is disposed on a second side of the main frame. Herein, the terms "first side" and "second side" refer to different sides of the main frame where the stepping device and the guide device are located.

[0033] Preferably, the phased array ultrasonic inspection and scanning device further comprises a clamping device, wherein one end of the main body is provided with a cover plate, the other end of the main body is provided with a fixing frame, and a second tension spring is symmetrically provided below the cover plate. The cover plate is connected to one end of the stepping device via the second tension spring in a pull-ring manner, and the other end of the stepping device is connected to the fixing frame via the extension spring. One end of the probe clamping device is fixedly connected to the fixing frame, and the other end of the probe clamping device is provided with a probe.

[0034] When the tension spring is connected, ensure that the cover and the end of the stepping device are in tension. When the extension spring is connected, ensure that the end of the stepping device and the lower fixing bracket are in compression.

[0035] If the scanning device is not provided with a clamping device, the probe clamping device may be connected to the stepping device, and auxiliary adjustment components of the probe may also be installed on this basis.

[0036] Preferably, a stabilizing pressure wheel is provided at the bottom of the main frame, and each group of the stabilizing pressure wheels is arranged in pairs. The middle of the paired stabilizing pressure wheels is fixedly connected to the lower part of the column, and the column is provided with a first tension spring, and one end of the first tension spring is fixedly connected to the main frame.

[0037] Example 1

[0038] A phased array ultrasonic detection scanning device, such as Figure 1 As shown, it includes a main frame 1, a stepping device 2, a probe clamping device 3, a guide device 4, a guide rail 5 matched with the guide device, and a pressing device 6. The top view of the scanning device of this embodiment is shown in FIG. Figure 2 shown.

[0039] The main frame 1 is in a convex shape and is formed in one piece. A stepping device 2 is provided on the upper portion thereof, and a guiding device 4 is provided on the bottom portion of the main frame 1 .

[0040] The top view of the stepping device 2 is as follows Figure 3 As shown, the stepping device 2 is installed through the upper portion of the main frame 1. The stepping device 2 is provided with evenly spaced through-holes and is fixed to the upper portion of the main frame 1 using connecting screws. The mounting position of the stepping device 2 and the main frame 1 is adjustable, facilitating inspection of specific locations. Fastening screws can also be installed above the stepping device 2 to tighten the connection between the stepping device 2 and the main frame 1, further strengthening the stability.

[0041] The pressing device 6 is as follows Figure 4 and Figure 5 As shown, its main body is a rectangular parallelepiped, with a cover plate 61 provided at one end of the main body and a fixing frame 62 provided at the other end of the main body. Second tension springs 63 are symmetrically provided at the lower part of the cover plate 61. The second tension springs 63 are located on both sides of the main body. The cover plate 61 is connected to one side of the end of the stepping device 2 via the second tension spring 63, and the other side of the end of the stepping device 2 is connected to the fixing frame 62 via the extension spring 64. The second tension spring 63 and the extension spring 64 are both connected to the corresponding structure via spring hooks. When the second tension spring 63 is connected, it should ensure that the cover plate 61 and the end of the stepping device 2 are in a tension state. When the extension spring 64 is connected, it should ensure that the end of the stepping device 2 and the lower fixing frame 62 are in a compression state.

[0042] One end of the probe clamping device 3 is mounted on the fixing frame 62 by a fastening screw so that it does not shake during movement. The other end of the probe clamping device 3 is provided with a probe.

[0043] The bottom of the main frame 1 is provided with a stabilizing pressure wheel 11, which is located in a rectangular groove at the bottom of the main frame 1. Each set of stabilizing pressure wheels is provided in pairs, and the middle of the paired stabilizing pressure wheels 11 is fixedly connected to the lower part of the vertical cylinder 12. The vertical cylinder 12 is equipped with a first tension spring 13, and one end of the first tension spring 13 is fixedly connected to the main frame 1. Figure 6 As shown, the horizontal axis passes through the vertical cylinder 12, and the vertical cylinder 12 extends from the circular hole on the main frame 1. The upper protruding part is sheathed with a tension spring 13. The two ends of the first tension spring 13 are respectively welded and fixed to the main frame 1 and the rotary cover. There is no gap between the spring circles. In the free state, the sheathed wheel is lower than the lower surface of the main frame 1. When in use, the rotary cover is pulled, the spring is in a tensioned state, and the sheathed wheel exerts pressure on the guide rail.

[0044] The guide device 4 includes two symmetrical L-shaped guide structures and auxiliary rollers arranged in cylindrical grooves at the lower parts of the guide structures.

[0045] The guide rail 5 can be bent along the circumferential direction of the pipeline. By installing connecting screws at different positions, a certain gap is formed between the guide rail 5 and the pipeline surface. The gap at each position is uniform and not less than 6mm.

[0046] The scanning device of this embodiment is highly practical, requires little space for use, and improves detection accuracy.

[0047] When using, please follow the steps below:

[0048] 1. Determine the phased array inspection step value based on the specifications of the workpiece to be inspected and the inspection process requirements.

[0049] 2. Determine the distance between the probe and the weld on the pipeline, and determine the position of the guide rail on the pipeline based on this distance.

[0050] 3. Install the guide rail that matches the circumference of the pipe onto the pipe. Install connecting screws at different positions to create a certain gap between the guide rail and the pipe surface, and the gap at each position should be uniform.

[0051] 4. Install the stabilizing pressure wheel in conjunction with the main frame.

[0052] 5. When matching the guide device with the guide rail, ensure that the thickness of the guide rail is well matched with the moving space.

[0053] 6. Connect the stepping device to the main frame, and install the connecting screws and fastening screws after determining the stepping length.

[0054] 7. After connecting the stepping device to the clamping device, connect the tension spring and compression spring.

[0055] 8. After connecting the probe, push or pull the scanning device along the circumference of the pipeline to make the relative distance between the probe and the weld consistent with the preset process requirements. During the movement of the probe, the weld detection data is collected.

[0056] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.

Claims

1. A phased array ultrasonic detection and scanning device, characterized in that: It includes a main frame, a stepping device, a guide device and a guide rail matched with the guide device. The main frame is in a convex shape. The stepping device is arranged on the first side of the main frame, and the guide device is arranged on the second side of the main frame.

2. The phased array ultrasonic detection and scanning device according to claim 1, characterized in that: The stepping device is arranged through the upper part of the main body frame.

3. The phased array ultrasonic detection and scanning device according to claim 2, characterized in that: The stepping device is provided with a through hole, and the stepping device is fixedly mounted on the upper part of the main frame by connecting screws.

4. The phased array ultrasonic detection and scanning device according to claim 3, characterized in that: The stepping device is provided with through holes at equal intervals.

5. The phased array ultrasonic detection and scanning device according to claim 1, characterized in that: It also includes a clamping device, a cover plate is provided at one end of the main body, a fixing frame is provided at the other end of the main body, a second tension spring is symmetrically provided at the lower part of the cover plate, the cover plate is connected to one side of the end of the stepping device by the second tension spring in a pull ring type, and the other side of the end of the stepping device is connected to the fixing frame through the extension spring.

6. The phased array ultrasonic detection and scanning device according to claim 5, characterized in that: One end of the probe clamping device is fixedly connected to the fixing frame, and the other end of the probe clamping device is provided with a probe.

7. The phased array ultrasonic detection and scanning device according to claim 1, characterized in that: A stabilizing pressure wheel is provided at the bottom of the main frame. Each group of the stabilizing pressure wheels is arranged in pairs. The middle of the paired stabilizing pressure wheels is fixedly connected to the lower part of the column. The column is equipped with a first tension spring, and one end of the first tension spring is fixedly connected to the main frame.

8. The phased array ultrasonic detection and scanning device according to claim 1, characterized in that: The guide device includes two symmetrical L-shaped guide structures and auxiliary rollers arranged at the lower parts of the guide structures.

9. The phased array ultrasonic detection and scanning device according to claim 1, characterized in that: A handle is provided on the side of the main body frame.

10. A phased array ultrasonic detection system, characterized in that: It comprises the phased array ultrasonic detection and scanning device as described in any one of claims 1 to 9.

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