A longitudinal and transverse wave tandem type ultrasonic testing device

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By designing a combination device of rolling module and probe module suitable for longitudinal and transverse wave tandem ultrasonic testing, the problems of low testing efficiency and inaccurate positioning were solved, and efficient and accurate defect detection was achieved.

CN224581471UActive Publication Date: 2026-07-31SHANDONG MECHANICAL ENG TESTING CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: SHANDONG MECHANICAL ENG TESTING CO LTD
Filing Date: 2025-08-08
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

The lack of dedicated testing equipment for existing longitudinal and transverse wave tandem ultrasonic testing leads to problems such as low testing efficiency, large data errors, and inaccurate defect location.

Method used

A detection device comprising a rolling module, a straight probe module, a main frame module, and an angled probe module was designed. The rolling module allows for convenient movement, the straight probe emits longitudinal waves, and the angled probe receives transverse waves. The probes slide on a fixed guide rail on the main frame to ensure that the probes are on the same horizontal plane, thus achieving accurate defect detection.

Benefits of technology

It improves detection efficiency and accuracy, reduces the probability of missed defects, ensures detection quality, and provides a convenient detection solution that is flexible in operation and precise in positioning.

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Abstract

This utility model discloses a longitudinal and transverse wave tandem ultrasonic testing device, including a rolling module, a straight probe module, a main frame module, and an angled probe module. The main frame module includes a main frame, a straight probe placement hole, a straight probe fastening screw hole, an angled probe fixing guide rail, and an angled probe sliding guide rail. The front of the main frame has a straight probe placement hole and a straight probe fastening screw hole, and the rear is an open structure with grooves on the surface forming two angled probe fixing guide rails, and a groove in the middle of the end forming an angled probe sliding guide rail. The straight probe module is placed in the straight probe placement hole in the main frame, and the angled probe module is set on the angled probe sliding guide rail and the angled probe fixing guide rail, and can slide back and forth within the angled probe sliding guide rail. After the main frame module, the straight probe module, and the angled probe module are assembled, they are connected to an ultrasonic testing instrument via data cables. This utility model reduces the probability of missed defect detection and improves detection accuracy and efficiency.

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Description

Technical Field

[0001] This utility model relates to a longitudinal and transverse wave tandem ultrasonic testing device, belonging to the field of industrial non-destructive testing technology. Background Technology

[0002] Ultrasonic testing is one of the conventional non-destructive testing technologies in industry. It assesses the presence, size, and location of defects by receiving information such as the amplitude and location of the reflected echoes from defects in the workpiece under inspection. Ultrasonic testing has high sensitivity, low testing cost, lightweight equipment, and strong penetrating power, and plays an important role in the inspection of welded joints in industrial pipelines.

[0003] In actual testing, defects in some special welded joints, such as sheet-like defects perpendicular to the test surface (e.g., incomplete fusion of the bevel in narrow gap welds, cracks along the thickness direction), are not easily detected by conventional ultrasonic single-probe testing processes, posing a significant hidden danger to the safe and stable operation of pipelines.

[0004] Longitudinal and transverse wave tandem ultrasonic testing employs a dual-probe setup, primarily used to detect defects that are difficult to detect with a single probe. Two probes are used: a straight probe as the transmitter and an angled probe as the receiver, positioned one in front of the other on the same surface in the same direction. The ultrasonic waves emitted by the straight probe are reflected and converted by the defect, and the echo is reflected back to the angled probe. Both probes are on the same surface of the workpiece being tested, and their axes are collinear. This method is mainly used to detect internal defects in thick workpieces, especially those perpendicular to the test surface, exhibiting high sensitivity and capable of detecting defects that are difficult to detect using conventional methods.

[0005] When performing longitudinal and transverse wave tandem ultrasonic testing, two probes are required to work together on the same horizontal plane to facilitate echo reception and display. However, currently, there is no dedicated testing device for field testing, which brings great inconvenience to actual field testing, resulting in inaccurate data, slow testing efficiency, and failure to receive defect signals. Therefore, there is an urgent need to design and develop a convenient and efficient testing device suitable for longitudinal and transverse wave tandem ultrasonic testing. Summary of the Invention

[0006] The technical problem to be solved by this utility model is that, in the case of longitudinal and transverse wave tandem ultrasonic testing, the lack of a dedicated testing device for the testing personnel leads to slow testing efficiency, large errors in the quantitative analysis of testing data, and inaccurate defect location. The present invention provides a longitudinal and transverse wave tandem ultrasonic testing device suitable for pipeline welded joints, which meets the needs of on-site testing and improves testing efficiency and accuracy.

[0007] To solve this technical problem, this utility model provides a longitudinal and transverse wave tandem ultrasonic testing device, including a rolling module, a straight probe module, a main frame module, and an angled probe module. The main frame module includes a main frame, a straight probe placement hole, a straight probe fastening screw hole, an angled probe fixing guide rail, and an angled probe sliding guide rail. The front of the main frame has a straight probe placement hole and a straight probe fastening screw hole, and the rear is an open structure with grooves on the surface forming two angled probe fixing guide rails, and a groove in the middle of the end forming an angled probe sliding guide rail. The straight probe module is placed in the straight probe placement hole in the main frame, and the angled probe module is set on the angled probe sliding guide rail and the angled probe fixing guide rail, and can slide back and forth within the angled probe sliding guide rail. After the main frame module, the straight probe module, and the angled probe module are assembled, they are connected to an ultrasonic testing instrument via data cables.

[0008] The rolling module includes a caster wheel, a support frame, a rotary bearing, and a compression spring. The caster wheel controls its movement and steering. The support frame is fixedly connected to the caster wheel via the bearing. One end of the compression spring is fixedly connected to the main frame, and the other end is fixedly connected to the support frame via the rotary bearing. The compression spring provides elastic cushioning.

[0009] The scrolling module is located at the bottom of the main frame module.

[0010] The straight probe module includes a straight probe, a straight probe fastening screw, and a straight probe data cable. The straight probe is placed in the straight probe placement hole, and the straight probe fastening screw passes through the straight probe fastening screw hole and is fixed on the main frame. One end of the straight probe data cable is connected to the straight probe, and the other end is connected to the ultrasonic detector.

[0011] The angled probe module includes an angled probe, angled probe fastening screws, angled probe sliding block, angled probe data cable, and angled probe fastening screw holes. The angled probe sliding block is fixedly connected to the angled probe. Two angled probe fastening screw holes are designed in the middle position of the angled probe sliding block. One end of the angled probe data cable is connected to the angled probe, and the other end is connected to the ultrasonic detector for data reception and transmission. The angled probe slides back and forth in the angled probe sliding guide rail through the angled probe sliding block. After the position is determined, the angled probe can be fixed to the main frame by the angled probe fastening screws.

[0012] The main frame is rectangular in shape, and is fixed to the rolling modules at the bottom by compression springs. There are four rolling modules in total, one at the front and one at the back.

[0013] Beneficial Effects: This invention enables convenient and efficient longitudinal and transverse wave tandem ultrasonic testing. The ultrasonic testing instrument emits longitudinal waves through a straight probe and receives transverse waves through an angled probe. Data is transmitted back to the ultrasonic testing instrument for display and analysis, enabling the detection of internal defects in pipe welded joints. This invention fixes the straight and angled probes on the same horizontal plane, overcoming the problem of difficulty in finding echoes when they are not on the same horizontal plane. The angled probe slides back and forth on a fixed guide rail, facilitating rapid locking and reception of defect echoes, enabling accurate defect detection. The combination of modules facilitates on-site ultrasonic testing, solving the problem of inconsistent coordination between straight and angled probes, reducing the probability of missed defects, minimizing detection positioning errors, improving detection accuracy, ensuring on-site testing quality, and increasing testing efficiency. It provides a flexible, precise, convenient, and efficient testing device for on-site longitudinal and transverse wave tandem ultrasonic testing. This invention is novel, unique, rigorously designed, and highly practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rolling module structure of this utility model; Figure 3 This is a schematic diagram of the straight probe module structure of this utility model; Figure 4 This is a schematic diagram of the main frame module structure of this utility model; Figure 5 This is a schematic diagram of the oblique probe module structure of this utility model; Figure 6 This is a left view of the structure of the device of this utility model; Figure 7 This is a right view of the structure of the device of this utility model; Figure 8 This is a front view of the structure of the device of this utility model; Figure 9 This is a rear view of the structure of the device of this utility model; Figure 10 This is a top view of the structure of the device of this utility model; Figure 11 This is a bottom view of the device structure of this utility model; In the diagram: A. Ultrasonic detector; 1. Rolling module; 2. Straight probe module; 3. Main frame module; 4. Angle probe module; 11. Caster wheel; 12. Support frame; 13. Rotary bearing; 14. Compression spring; 21. Straight probe; 22. Straight probe fastening screw; 23. Straight probe data cable; 31. Main frame; 32. Straight probe placement hole; 33. Straight probe fastening screw hole; 34. Angle probe fixing guide rail; 35. Angle probe sliding guide rail; 41. Angle probe; 42. Angle probe fastening screw; 43. Angle probe sliding block; 44. Angle probe data cable; 45. Angle probe fastening screw hole. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figures 1-11 As shown, this utility model provides a longitudinal and transverse wave tandem ultrasonic testing device, including a rolling module 1, a straight probe module 2, a main frame module 3, and an angled probe module 4. The main frame module 3 includes a main frame 31, a straight probe placement hole 32, a straight probe fastening screw hole 33, an angled probe fixing guide rail 34, and an angled probe sliding guide rail 35. The front part of the main frame 31 is a solid structure with a straight probe placement hole 32 and a straight probe fastening screw hole 33, while the rear part is an open structure with grooves on the surface forming two angled probe fixing guide rails 34, and a groove in the middle of the end forming an angled probe sliding guide rail 35; the straight probe... Module 2 is placed in the straight probe placement hole 32 in the main frame 31. The angled probe module 4 is set on the angled probe sliding guide rail 35 and the angled probe fixed guide rail 34, and can slide back and forth in the angled probe sliding guide rail 35. After the main frame module 3 is assembled with the straight probe module 2 and the angled probe module 4, they are respectively connected to the ultrasonic detector A through data cables. The ultrasonic detector A emits ultrasonic waves through the straight probe module 2, and the angled probe module 4 receives, converts and transforms the ultrasonic waves, which are then transmitted to the ultrasonic detector A through the data cables. The inspector judges whether there are defects based on the echo characteristics, thus completing the entire ultrasonic testing process.

[0017] The rolling module 1 includes a caster wheel 11, a support frame 12, a rotating bearing 13, and a compression spring 14. The caster wheel 11 controls its movement and steering. The support frame 12 is fixedly connected to the caster wheel 11 through the bearing and provides support. One end of the compression spring 14 is fixedly connected to the main frame 31, and the other end is fixedly connected to the support frame 12 through the rotating bearing 13. The compression spring 14 provides elastic cushioning. When the entire main frame 31 is pressed vertically downward, the probes of the straight probe module 2 and the angled probe module 4 can be tightly attached to the surface to be tested, ensuring the coupling effect during testing and facilitating the transmission and reception of sound waves.

[0018] The rolling module 1 is located at the bottom of the main frame module 3, with four modules arranged in the front and back, which facilitates the movement of the overall detection device.

[0019] The straight probe module 2 includes a straight probe 21, a straight probe fastening screw 22, and a straight probe data cable 23. The straight probe 21 is placed in the straight probe placement hole 32, and the straight probe fastening screw 22 passes through the straight probe fastening screw hole 33 and is fixed on the main frame 31. One end of the straight probe data cable 23 is connected to the straight probe 21, and the other end is connected to the ultrasonic detector A. The ultrasonic detector A transmits a signal to the straight probe 21 through the straight probe data cable 23, enabling it to emit longitudinal waves.

[0020] The angled probe module 4 includes an angled probe 41, an angled probe fastening screw 42, an angled probe sliding block 43, an angled probe data cable 44, and angled probe fastening screw holes 45. The angled probe sliding block 43 is fixedly connected to the angled probe 41. The angled probe 41 slides into the angled probe sliding guide rail 35 from the rear opening of the main frame 31. The angled probe sliding block 43 can slide and move within the angled probe sliding guide rail 35. The angled probe 41 is fixed by the angled probe fixing guide rail 34. Two angled probe fastening screw holes 45 are designed in the middle position of the angled probe sliding block 43. One end of the angled probe data cable 44 is connected to the angled probe 41, and the other end is connected to the ultrasonic detector A for data reception and transmission. The angled probe 41 slides back and forth within the angled probe sliding guide rail 35 through the angled probe sliding block 43. After the position is determined, the angled probe 41 can be fixed on the main frame 31 by passing the angled probe fastening screw 42 through the angled probe fastening screw holes 45 to prevent movement and sliding, making the detection positioning and quantification more accurate.

[0021] The main frame 31 is a rectangular structure, and is connected and fixed to the rolling module 1 at the bottom by compression springs 14. There are four rolling modules 1 in total, one at the front and one at the back.

[0022] The testing process using this invention is as follows: Before testing, assemble and fix the caster wheel 11, support frame 12, rotating bearing 13, and compression spring 14 in the rolling module 1. Fix the compression spring 14 to the main frame 31. Slide the angled probe 41 into the rear end of the main frame 31. Place the angled probe sliding block 43 onto the angled probe sliding guide rail 35. Slide the angled probe 41 left and right according to the distance calculated for testing. After determining the distance, fix the angled probe 41 to the main frame 31 with the angled probe fastening screw 42. Place the straight probe 21 into the straight probe placement hole 32 and fix it to the main frame 31 with the straight probe fastening screw 22 to prevent the straight probe 21 from moving. Connect one end of the straight probe data cable 23 to the ultrasonic detector A and the other end to the straight probe 21. Connect one end of the angled probe data cable 44 to the ultrasonic detector A and the other end to the angled probe 41. Turn on the ultrasonic testing instrument A, set the testing parameters, and make the straight probe 21 emit longitudinal waves. Through the reflection and waveform conversion of the defect to be inspected, the angle probe 41 receives the transverse waves and transmits them back to the ultrasonic testing instrument A for display via the angle probe data line 44. The inspector identifies and judges the defects based on the echo waveform. After the inspection of this area is completed, move the utility model device along the circumference of the pipeline until the ultrasonic testing process of the entire pipeline is completed.

[0023] This invention enables convenient and efficient longitudinal and transverse wave tandem ultrasonic testing. The ultrasonic testing instrument emits longitudinal waves through a straight probe and receives transverse waves through an angled probe. Data is transmitted back to the ultrasonic testing instrument for display and analysis, achieving the detection of internal defects in pipe welded joints. This invention fixes the straight and angled probes on the same horizontal plane, overcoming the problem of difficulty in finding echoes when they are not on the same horizontal plane. The angled probe slides back and forth on a fixed guide rail, facilitating rapid locking and reception of defect echoes, enabling accurate defect detection. The combination of modules in this device facilitates on-site ultrasonic testing, solving the problem of inconsistent coordination between straight and angled probes, reducing the probability of missed defects, minimizing detection positioning errors, improving detection accuracy, ensuring on-site testing quality, and increasing testing efficiency. It provides a flexible, precise, convenient, and efficient testing device for on-site longitudinal and transverse wave tandem ultrasonic testing. This invention is novel, unique, rigorously designed, and highly practical.

[0024] The above-described embodiments of this utility model are merely illustrative examples and are not the only ones. All modifications within the scope of this utility model or equivalent to this utility model are encompassed by this utility model.

Claims

1. A longitudinal and transverse wave tandem ultrasonic testing device, characterized in that: The system includes a rolling module (1), a straight probe module (2), a main frame module (3), and an angled probe module (4). The main frame module (3) includes a main frame (31), a straight probe placement hole (32), a straight probe fastening screw hole (33), an angled probe fixing guide rail (34), and an angled probe sliding guide rail (35). The main frame (31) has a straight probe placement hole (32) and a straight probe fastening screw hole (33) at the front and an open structure at the rear. The surface is grooved to form two angled probe fixing guide rails (34), and the end is grooved to form an angled probe sliding guide rail (35). The straight probe module (2) is placed in the straight probe placement hole (32) in the main frame (31). The angled probe module (4) is set on the angled probe sliding guide rail (35) and the angled probe fixing guide rail (34) and can slide back and forth in the angled probe sliding guide rail (35). After the main frame module (3) is assembled with the straight probe module (2) and the angled probe module (4), they are connected to the ultrasonic detector (A) through data cables.

2. The longitudinal and shear wave tandem ultrasonic testing apparatus according to claim 1, characterized by: The rolling module (1) includes a caster wheel (11), a support frame (12), a rotating bearing (13), and a compression spring (14). The caster wheel (11) controls its movement and steering. The support frame (12) is fixedly connected to the caster wheel (11) through the bearing. One end of the compression spring (14) is fixedly connected to the main frame, and the other end is fixedly connected to the support frame (12) through the rotating bearing (13). The compression spring (14) provides elastic cushioning.

3. The longitudinal and shear wave tandem ultrasonic testing apparatus according to Claim 1, characterized by: The scrolling module (1) is located at the bottom of the main frame module (3).

4. The longitudinal and shear wave tandem ultrasonic testing apparatus according to Claim 1, characterized by: The straight probe module (2) includes a straight probe (21), a straight probe fastening screw (22) and a straight probe data cable (23). The straight probe (21) is placed in the straight probe placement hole (32). The straight probe fastening screw (22) passes through the straight probe fastening screw hole (33) and is fixed on the main frame (31). One end of the straight probe data cable (23) is connected to the straight probe (21), and the other end is connected to the ultrasonic detector (A).

5. The longitudinal and shear wave tandem ultrasonic testing apparatus according to Claim 1, characterized by: The angle probe module (4) includes an angle probe (41), an angle probe fastening screw (42), an angle probe sliding block (43), an angle probe data cable (44), and angle probe fastening screw holes (45). The angle probe sliding block (43) is fixedly connected to the angle probe (41). Two angle probe fastening screw holes (45) are designed in the middle position of the angle probe sliding block (43). One end of the angle probe data cable (44) is connected to the angle probe (41), and the other end is connected to the ultrasonic detector (A) for data reception and transmission. The angle probe (41) slides back and forth in the angle probe sliding guide rail (35) through the angle probe sliding block (43). After the position is determined, the angle probe (41) can be fixed on the main frame (31) by the angle probe fastening screw (42).

6. The longitudinal and shear wave tandem ultrasonic testing apparatus according to any one of claims 1 to 5, characterized by: The main frame (31) is a rectangular structure, and is connected and fixed to the rolling module (1) at the bottom by compression spring (14). There are four rolling modules (1) in total, one at the front and one at the back.