Acoustic beam refraction angle adjusting device and method for non-parallel contact surfaces
By designing a sound beam refraction angle adjustment device with non-parallel contact surfaces, and utilizing rotating equipment and liquid coupling sound-transmitting membrane technology, the problem of difficulty in controlling the sound beam incident angle in the detection of complex curved workpieces by traditional ultrasonic probes has been solved, realizing stable refraction of the sound beam and high-precision detection in complex curved workpieces.
Patent Information
- Application Number
- CN202511134799.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-14
- Publication Date
- 2025-10-31
AI Technical Summary
When traditional ultrasonic probes inspect complex curved workpieces, the non-parallel contact surfaces make it difficult to precisely control the incident angle of the sound beam, affecting the detection accuracy. Furthermore, it is difficult to specifically adjust the refraction angle of the sound beam, resulting in a low defect detection rate.
A sound beam refraction angle adjustment device with a non-parallel contact surface was designed. The incident angle of the probe body is controlled by rotating device two and rotating device three in coordination. Combined with elastic element and liquid coupling sound-transmitting membrane, the stable refraction angle adjustment of the sound beam in the complex curved surface workpiece is realized. The device identifies groove defects through detection equipment and dynamically adjusts the incident angle of the sound beam for targeted detection.
It significantly improves the adaptability and detection accuracy of ultrasonic testing on complex curved workpieces, ensures that the sound beam refraction angle is stable and controllable, and improves the defect detection rate and detection effect.
Smart Images
Figure CN120870352A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ultrasonic testing, and specifically to a device and method for adjusting the refraction angle of a sound beam on a non-parallel contact surface. Background Technology
[0002] In the field of industrial nondestructive testing, ultrasonic testing technology is widely used in the defect detection of various metal components due to its high efficiency and accuracy. However, when dealing with workpieces with complex curved surfaces (such as arc-shaped pipes), the traditional ultrasonic probes have a non-parallel matching contact surface with the workpiece surface, which makes it difficult to accurately control the incident angle of the sound beam. This causes the refraction angle to deviate from the expected value, affecting the detection accuracy. Furthermore, if there are defects such as grooves on the workpiece surface, conventional devices cannot achieve targeted adjustment of the sound beam refraction angle, resulting in a low defect detection rate. To address this, we propose a sound beam refraction angle adjustment device and method with a non-parallel contact surface. Summary of the Invention
[0003] The purpose of this invention is to provide a device and method for adjusting the refraction angle of a sound beam with a non-parallel contact surface. This invention solves the technical problem that when conventional ultrasonic probes perform ultrasonic testing on workpieces with complex curved surfaces, the non-parallel matching between the contact surface and the workpiece surface makes it difficult to accurately control the incident angle of the sound beam, which in turn causes the refraction angle to deviate from the expected value and affects the detection accuracy.
[0004] The present invention achieves the above objectives through the following technical solutions: A sound beam refraction angle adjustment device with a non-parallel contact surface includes a positioning support structure for clamping and positioning the main body of the arc-shaped test piece to be tested, a rotation detection mechanism disposed on the positioning support structure, and a detection mechanism disposed on the rotation detection mechanism and driven by the rotation detection mechanism to move along the surface of the arc-shaped test piece to be tested for ultrasonic testing. The detection mechanism includes a housing, a probe body disposed within the housing, an outer frame disposed outside the probe body, a second rotating device disposed on the outer wall of the outer frame for driving the probe body to rotate relative to the outer frame around a first axis, and a third rotating device disposed outside the housing for driving the outer frame to rotate around a second axis perpendicular to the first axis. The second and third rotating devices are used to change the incident angle of the probe body, thereby adjusting the refraction angle of the sound beam from the probe body within the arc-shaped test piece.
[0005] A further improvement is that the end of the housing facing the arc-shaped test piece is hollow, and the detection mechanism also includes a contact part. The contact part includes a movable cylinder movably inserted into the hollow end of the housing. An elastic element is provided between the movable cylinder and the housing. One end of the movable cylinder located inside the housing is provided with a sound-transmitting block corresponding to the probe body, and the other end is provided with a dry coupling sound-transmitting membrane for contacting the surface of the arc-shaped test piece. The movable cylinder and the space between the sound-transmitting block and the dry coupling sound-transmitting membrane are filled with liquid to cause the dry coupling sound-transmitting membrane to bulge away from the housing.
[0006] A further improvement is that a liquid storage tank is provided on one side of the shell, and the liquid outlet of the liquid storage tank is connected to a movable cylinder through a pipeline. A piston is provided inside the liquid storage tank, and the piston is driven by a telescopic device on the liquid storage tank to move inside the liquid storage tank, so as to compress the liquid in the liquid storage tank into the movable cylinder or extract the liquid in the movable cylinder. A solenoid valve is provided at the liquid outlet of the liquid storage tank.
[0007] A further improvement is that the rotation detection mechanism includes a rotating shaft mounted on a positioning support structure, a rotating device mounted on the positioning support structure for driving the rotating shaft to rotate, and a telescopic connecting frame with one end sleeved on the outer wall of the rotating shaft and the other end connected to the housing.
[0008] A further improvement is that the rotation detection mechanism also includes a second telescopic connecting frame. Both the second and the first telescopic connecting frame are slidably sleeved on the outer wall of the rotating shaft. The second and the first telescopic connecting frame are connected by a connector. One end of the second telescopic connecting frame is equipped with a detection device for detecting groove defects on the surface of the arc-shaped test piece via a mounting plate. The first telescopic connecting frame is also rotatably connected to one end of the second telescopic device, which is mounted on the positioning support structure. The second telescopic device is used to drive the first telescopic connecting frame to move along the outer wall of the rotating shaft so that the detection mechanism or detection device corresponds to the arc-shaped test piece.
[0009] A further improvement is that the rotation detection mechanism also includes an angle detection device mounted on the rotating shaft. The angle detection device, the detection device, the telescopic device, and the solenoid valve are all electrically connected to a controller. The controller includes a receiving module, a comparison module, a recording module, and a control module. The receiving module is used to receive data collected by the detection equipment and shaft angle value data collected by the angle detection equipment. The comparison module is used to determine whether a groove defect is present based on the data collected by the detection equipment. The recording module is used to store the current corresponding shaft angle value data and record it as the defect angle position after the comparison module confirms the groove defect. The control module is used to control the opening of the solenoid valve and the movement of the piston of the telescopic device to a preset position when the rotating shaft rotates to the defect angle position, so as to compress the liquid in the storage tank into the movable tank.
[0010] A further improvement is that the positioning support structure includes two sets of parallel transverse frames, two sets of support frames connecting the two sets of transverse frames and located at both ends of the transverse frames, a bidirectional lead screw rotatably mounted on the transverse frame and extending along the length of the transverse frame, sliders rotatably mounted at both ends of the outer wall of the bidirectional lead screw and slidably connected to the transverse frame, and a drive device mounted on a support frame for driving the two bidirectional lead screws to rotate synchronously. The transverse frame has an opening for one end of the slider to pass through. The end of the slider passing through the opening is connected to a clamping block for clamping the main body of the arc-shaped workpiece through a telescopic device. The rotating shaft is rotatably mounted between the two sets of transverse frames. The telescopic device, the rotating device, and the angle detection device are all mounted on the transverse frame.
[0011] A further improvement is that the controller is also electrically connected to the alarm and the rotating device, and the control module is also configured to control the rotating device to shut down when the shaft rotates to the defect angle position, while simultaneously controlling the alarm to operate.
[0012] A method for adjusting the refraction angle of a sound beam on a non-parallel contact surface, utilizing the aforementioned adjustment device, includes the following steps: S1: Fix the main body of the arc-shaped part to be tested onto the positioning support structure; S2: By rotating the detection mechanism, the detection mechanism is moved along the surface of the arc-shaped test piece, while the probe body is opened to perform ultrasonic testing on the surface of the arc-shaped test piece. S3: During the ultrasonic testing process, according to the real-time testing requirements, the rotating device is controlled to drive the probe body to rotate relative to the outer frame around the first axis and / or drive the outer frame to rotate around the second axis perpendicular to the first axis in order to dynamically adjust the incident angle of the probe body so that the refraction angle of the sound beam in the test piece meets the testing requirements.
[0013] The beneficial effects of this invention are as follows: This invention, through the coordinated control of rotating device two and rotating device three, can change the incident angle of the probe body, thereby adjusting the refraction angle of the sound beam within the arc-shaped workpiece. This ensures that the refraction angle of the sound beam inside the workpiece is stable and controllable, significantly improving the adaptability and detection accuracy of ultrasonic testing on complex curved workpieces, effectively reducing the refraction angle drift problem, and improving detection accuracy. Furthermore, this invention's rotating detection mechanism allows for the detection of the workpiece before ultrasonic testing, identifying and recording the location of groove defects. During subsequent ultrasonic testing, when the detection mechanism moves to the recorded groove defect location, it facilitates the adjustment of the sound beam refraction angle for targeted testing, and controls the deformation of the contact part to better fit the groove defect location, ensuring the detection mechanism achieves optimal acoustic coupling and improving the ultrasonic testing effect. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the adjustment device structure of the present invention; Figure 2 This is a schematic diagram of the detection mechanism structure of the present invention; Figure 3 For the present invention Figure 2 Structural sectional view; Figure 4 This is a schematic diagram of the rotation detection mechanism of the present invention; Figure 5 This is a schematic diagram of the positioning support structure of the present invention.
[0015] In the diagram: 1. Main body of the arc-shaped test piece; 2. Positioning support structure; 21. Horizontal frame; 22. Support frame; 23. Bidirectional lead screw; 24. Slider; 25. Telescopic device one; 26. Clamping block; 27. Drive device; 3. Rotation detection mechanism; 31. Rotating shaft; 32. Rotation device one; 33. Telescopic connecting frame one; 34. Telescopic connecting frame two; 35. Detection device; 36. Connector; 37. Telescopic device two; 38. Angle detection device; 4. Detection mechanism; 41. Housing; 42. Probe body; 43. Outer frame; 44. Rotation device two; 45. Rotation device three; 46. Contact part; 461. Movable cylinder; 462. Sound-transmitting block; 463. Elastic element; 464. Dry coupling sound-transmitting membrane; 47. Liquid storage cylinder; 48. Telescopic device three. Detailed Implementation
[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0017] Example 1 Please see the appendix Figure 1-3 A sound beam refraction angle adjustment device with a non-parallel contact surface includes a positioning support structure 2 for clamping and positioning a circular arc test piece 1 to be tested, a rotating detection mechanism 3 disposed on the positioning support structure 2, and a detection mechanism 4 disposed on the rotating detection mechanism 3 and driven by the rotating detection mechanism 3 to move along the surface of the circular arc test piece 1 for ultrasonic testing. The interface between the detection mechanism 4 and the circular arc test piece 1 is not planar. By rotating the detection mechanism 3, the detection mechanism 4 moves along an arc path to achieve the detection of the arc surface wall of the circular arc test piece 1. Specifically, as shown... Figure 1 As shown, the detection mechanism 4 is in contact with the inwardly recessed arc-shaped outer wall of the arc-shaped test piece 1; The detection mechanism 4 includes a housing 41, a probe body 42 (such as an ultrasonic testing probe widely used in the art) disposed within the housing 41, an outer frame 43 disposed outside the probe body 42, the outer frame 43 being rectangular, a second rotating device 44 (preferably a micro servo motor, the axis of rotation of which is the first axis) disposed on the outer wall of the outer frame 43 for driving the probe body 42 to rotate relative to the outer frame 43 around a first axis, and a third rotating device 45 (preferably a micro servo motor, the axis of rotation of which is the second axis) disposed outside the housing 41 for driving the outer frame 43 to rotate around a second axis perpendicular to the first axis. Specifically, the probe body 42 is rotatably disposed within the outer frame 43 via a rotating shaft, the output end of the second rotating device 44 is connected to one end of the rotating shaft, the outer frame 43 is rotatably disposed within the housing 41 via the second rotating shaft, and the output end of the third rotating device 45 is connected to one end of the second rotating shaft. The second rotating device 44 and the third rotating device 45 are used to change the incident angle of the probe body 42, thereby adjusting the refraction angle of the sound beam of the probe body 42 within the arc-shaped test piece 1.
[0018] In the above manner, during the actual testing process, the operator of the testing agency 4 can manually control (or automatically control via a preset program) the rotating device 2 44 and / or the rotating device 3 45. The two rotating devices work together to precisely adjust the posture of the probe body 42 in three-dimensional space, compensate for the contact surface angle deviation caused by the curvature change of the arc-shaped workpiece, and keep the sound beam incident angle at the preset value. This ensures that the refraction angle of the sound beam inside the workpiece is stable and controllable, significantly improving the adaptability and testing accuracy of ultrasonic testing on complex curved workpieces, and effectively solving the problem of refraction angle drift caused by non-parallel contact surfaces of traditional fixed-angle probes.
[0019] A method for adjusting the refraction angle of a sound beam on a non-parallel contact surface, utilizing the aforementioned adjustment device, includes the following steps: S1: Fix the main body 1 of the arc-shaped test piece to the positioning support structure 2; S2: By rotating the detection mechanism 3, the detection mechanism 4 is moved along the surface of the arc-shaped test piece 1, and at the same time, the probe body 42 is opened to perform ultrasonic testing on the surface of the arc-shaped test piece 1. S3: During the ultrasonic testing process, according to the real-time testing requirements, the rotating device 44 is controlled to drive the probe body 42 to rotate relative to the outer frame 43 around the first axis and / or drive the outer frame 43 to rotate around the second axis perpendicular to the first axis in order to dynamically adjust the incident angle of the probe body 42 so that the refraction angle of the sound beam in the test piece meets the testing requirements.
[0020] Preferably, in this embodiment, the end of the housing 41 facing the arc-shaped test piece body 1 is hollow, so that the sound beam emitted by the probe body 42 can be propagated to the arc-shaped test piece body 1. The detection mechanism 4 also includes a contact part 46, which includes a movable cylinder 461 movably inserted into one hollow end of the housing 41. An elastic element 463 (preferably a helical spring sleeved on the outer wall of the movable cylinder 461, with the two ends of the spring connected to the end of the housing 41 and the outer wall of the movable cylinder 461 respectively) is provided between the movable cylinder 461 and the housing 41. The elastic element 463 is used to enable the movable cylinder 461 to adaptively conform to the outer curved surface of the arc-shaped test piece. One end of the movable cylinder 461 located inside the housing 41 is provided with a sound-transmitting block 462 (preferably made of plexiglass) corresponding to the probe body 42. The other end is provided with a dry coupling sound-transmitting membrane 464 for contacting the surface of the arc-shaped test piece body 1. The dry coupling acoustic membrane 464 is made of wear-resistant and elastic polymer material. The movable cylinder 461 and the space between the acoustic block 462 and the dry coupling acoustic membrane 464 are filled with liquid (preferably a coupling liquid with a certain pressure) to make the dry coupling acoustic membrane 464 bulge away from the housing 41. The liquid causes the dry coupling acoustic membrane 464 to generate outward pressure, ensuring a tight acoustic contact with the workpiece surface without bubbles. Through the dual action of elastic pre-tightening force and liquid pressure, the detection mechanism 4 and the outer wall of the arc-shaped test piece 1 are adaptively fitted, preventing the problems of bubbles and poor contact during detection, improving the ultrasonic transmission efficiency, and making the detection signal clearer and more reliable. Preferably, a number of sets of balls (not shown in the figure) can be embedded at the bottom of the movable cylinder 461 to contact the arc-shaped test body 1, so as to reduce the wear of the movable cylinder 461 or the damage to the arc-shaped test body 1.
[0021] Preferably, in this embodiment, a liquid storage cylinder 47 is provided on one side of the housing 41. The liquid outlet of the liquid storage cylinder 47 is connected to the movable cylinder 461 through a pipeline. A piston is provided inside the liquid storage cylinder 47. The piston is driven by a telescopic device 48 (such as a miniature electric telescopic rod) provided on the liquid storage cylinder 47 to move inside the liquid storage cylinder 47, so as to compress the liquid in the liquid storage cylinder 47 into the movable cylinder 461 or to extract the liquid in the movable cylinder 461. A solenoid valve is provided at the liquid outlet of the liquid storage cylinder 47. The liquid pressure in the movable cylinder 461 can be easily adjusted in the above manner so that the dry coupling sound-permeable membrane 464 can be adaptively fitted to the surface of the arc-shaped test piece body 1.
[0022] Example 2 Please see the appendix Figure 1 , Figures 4-5 Based on Embodiment 1, the rotation detection mechanism 3 of this embodiment includes a rotating shaft 31 mounted on the positioning support structure 2, a rotating device 32 (such as a servo motor and a reducer) mounted on the positioning support structure 2 for driving the rotating shaft 31 to rotate, and a telescopic connecting frame 33 with one end sleeved on the outer wall of the rotating shaft 31 and the other end connected to the housing 41. The telescopic connecting frame 33 adopts a conventional structural design, such as including a fixed frame sleeved on the rotating shaft 31, a movable frame connected to the housing 41, and an electric telescopic rod connecting the two. The rotating shaft 31 is driven to rotate by the rotating device 32, which drives the telescopic connecting frame 33 and the detection mechanism 4 as a whole to move along the surface of the arc-shaped test piece 1. At the same time, the telescopic connecting frame 33 adjusts the contact distance between the detection mechanism 4 and the surface of the arc-shaped test piece 1, which can adapt to arc-shaped test pieces 1 of different diameters.
[0023] Preferably, the rotation detection mechanism 3 in this embodiment further includes a second telescopic connecting frame 34, which has the same structure as the first telescopic connecting frame 33. Both the second telescopic connecting frame 34 and the first telescopic connecting frame 33 are slidably fitted onto the outer wall of the rotating shaft 31 with an axial protrusion through a notched opening, realizing the function of both rotating synchronously with the rotating shaft 31 and moving independently along the axial direction. The second telescopic connecting frame 34 and the first telescopic connecting frame 33 are connected by a connector 36. The connector 36 can be a non-adjustable rod or an adjustable telescopic rod, screw and nut combination structure, etc. The connector 36 is used to connect the second telescopic connecting frame 34 and the first telescopic connecting frame 33. One end of the second 34 is equipped with a detection device 35 for detecting groove defects on the surface of the arc-shaped test piece body 1 via a mounting plate. The detection device 35 is, for example, a laser scanner or an industrial camera. The device identifies groove defects by emitting lasers or acquiring image data and analyzing surface morphology features through algorithms. This is a conventional technology in the field and will not be described in detail here. The telescopic connecting frame 33 is also rotatably connected (e.g., via a bearing) to one end of the telescopic device 37 (such as an electric telescopic rod) provided on the positioning support structure 2. The telescopic device 37 is used to drive the telescopic connecting frame 33 to move along the outer wall of the rotating shaft 31 so that the detection mechanism 4 or the detection device 35 corresponds to the arc-shaped test piece body 1. Before ultrasonic testing of the arc-shaped test piece 1 by the testing mechanism 4, the testing device 35 can be adjusted to correspond with the arc-shaped test piece 1 by the telescopic device 2 37. The rotating device 1 32 drives the rotating shaft 31 to rotate, so that the testing device 35 moves along the surface of the workpiece to detect groove defects on the surface of the arc-shaped test piece 1. After detecting the groove defect, the coordinate information of the position is recorded. In the subsequent ultrasonic testing stage, when the testing mechanism 4 moves to the recorded groove defect position, the rotating device 2 44 and the rotating device 3 45 are controlled to dynamically adjust the probe body 42, change its sound beam incident angle, so that the ultrasonic beam points to the groove defect area with the optimal refraction angle, thereby improving the detection rate and detection accuracy of complex defects.
[0024] Example 3 Please see the appendix Figure 2 , Figure 4 and Figure 5 As a preferred embodiment, the rotation detection mechanism 3 further includes an angle detection device 38 (preferably a rotary encoder, which accurately measures the angle value data of the rotating shaft 31 by detecting the change of photoelectric signal of the encoder disk when the rotating shaft 31 rotates), and the angle detection device 38, the detection device 35, the telescopic device 48 and the solenoid valve are all electrically connected to the controller. The controller includes a receiving module, a comparison module, a recording module, and a control module; The receiving module is used to receive data collected by the detection device 35 and angle value data of the rotating shaft 31 collected by the angle detection device 38. The comparison module is used to determine whether a groove defect is present based on the data collected by the detection device 35. For example, the comparison module analyzes the surface image data collected by the detection device 35 in real time using a preset defect feature algorithm (such as edge detection algorithm, deep neural network model, etc.). When a groove feature is detected and the depth / width exceeds the set threshold, it is determined to be a groove defect. The recording module is used to store the current corresponding shaft 31 angle value data and record it as the defect angle position after the comparison module confirms the groove defect; The control module is used to control the opening of the solenoid valve and the movement of the piston driven by the telescopic device 48 to a preset position when the rotating shaft 31 rotates to the defect angle position, so as to compress the liquid in the storage tank 47 into the movable cylinder 461. For example, if the detection device 35 detects that the angle corresponding to the groove defect position of the arc-shaped test piece body 1 is 80 degrees, the detection device 38 collects the angle value data of the rotating shaft 31. Under the drive of the rotating shaft 31, the detection mechanism 4 moves along the surface of the arc-shaped test piece body 1. The rotary encoder still detects the rotation angle of the rotating shaft 31 in real time. When the angle value data of the rotating shaft 31 is detected to be 80 degrees, it means that the detection mechanism 4 corresponds to the detected groove defect position and the detection mechanism 4 is at the defect angle position. Therefore, the controller causes the solenoid valve to open and the telescopic device 48 to drive the piston to move to a preset position to compress the liquid in the storage tank 47 into the movable cylinder 461. This causes the dry coupling acoustic membrane 464 to expand further into the arc-shaped test piece body 1 under the pressure of the liquid to better adapt to the groove defect on the arc-shaped test piece body 1, ensuring that the ultrasonic probe obtains the best acoustic coupling effect and improving the ultrasonic detection effect.
[0025] Preferably, the positioning support structure 2 in this embodiment includes two sets of parallel transverse frames 21, two sets of support frames 22 (in a U-shape) connecting the two sets of transverse frames 21 and located at both ends of the transverse frames 21, a bidirectional lead screw 23 rotatably mounted on the transverse frames 21 via bearings and extending along the length of the transverse frames 21, sliders 24 rotatably mounted at both ends of the outer wall of the bidirectional lead screw 23 and slidably connected to the transverse frames 21, the two sets of sliders 24 moving closer or further apart on the bidirectional lead screw 23, and a drive device 27 (such as a servo motor and a sprocket and chain structure that drives the servo motor and the bidirectional lead screw 23) mounted on a support frame 22 for synchronously rotating the two bidirectional lead screws 23, and an opening on the transverse frame 21 for one end of the slider 24 to pass through. One end of 24, passing through the movable opening, is connected to a clamping block 26 for holding the arc-shaped test piece body 1 via a telescopic device 25 (such as an electric telescopic rod). The clamping block 26 and the telescopic device 25 can be detachably connected by a bolt-type structure. The clamping block 26 has an arc-shaped groove to contact the surface wall of the arc-shaped test piece body 1. The clamping block 26 is moved by rotating the bidirectional lead screw 23 driven by a servo motor, so that the clamping block 26 can hold arc-shaped test pieces body 1 of different diameters under the drive of the telescopic device 25, ensuring that the arc-shaped test piece body 1 does not shift during the test and that the sound beam refraction angle does not change. The rotating shaft 31 is rotatably mounted between two sets of transverse frames 21 via bearings. The telescopic device 27, the rotating device 1 32, and the angle detection devices 38 and 35 are all mounted on the transverse frames 21.
[0026] Preferably, the controller in this embodiment is also electrically connected to an alarm (such as an audible and visual alarm) and a rotating device 32 (such as a servo motor). The control module is also configured to control the rotating device 32 to shut down when the rotating shaft 31 rotates to the defect angle position (to ensure that the defect position is accurately aligned), and at the same time control the alarm to work so that the user can confirm the location of the groove defect. This controls the rotating device 44 and the rotating device 45 to adjust or observe the incident angle of the probe body 42, change its refraction angle, and make the sound beam refraction angle accurately point to the depth of the groove defect, thereby improving the detection rate and detection effect.
[0027] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A sound beam refraction angle adjustment device with a non-parallel contact surface, characterized in that: It includes a positioning support structure (2) for clamping and positioning the main body (1) of the arc-shaped test piece to be tested, a rotation detection mechanism (3) provided on the positioning support structure (2), and a detection mechanism (4) provided on the rotation detection mechanism (3) and driven by the rotation detection mechanism (3) to move along the surface of the main body (1) of the arc-shaped test piece to be tested for ultrasonic testing. The detection mechanism (4) includes a housing (41), a probe body (42) disposed inside the housing (41), an outer frame (43) disposed outside the probe body (42), a second rotating device (44) disposed on the outer wall of the outer frame (43) for driving the probe body (42) to rotate relative to the outer frame (43) around a first axis, and a third rotating device (45) disposed outside the housing (41) for driving the outer frame (43) to rotate around a second axis perpendicular to the first axis. The second rotating device (44) and the third rotating device (45) are used to change the incident angle of the probe body (42), thereby adjusting the refraction angle of the sound beam of the probe body (42) in the arc-shaped test piece body (1).
2. The adjustment device according to claim 1, characterized in that, The housing (41) is hollow at one end facing the arc-shaped test piece body (1). The detection mechanism (4) also includes a contact part (46). The contact part (46) includes a movable cylinder (461) movably inserted into one hollow end of the housing (41). An elastic element (463) is provided between the movable cylinder (461) and the housing (41). One end of the movable cylinder (461) located inside the housing (41) is provided with a sound-transmitting block (462) corresponding to the probe body (42), and the other end is provided with a dry coupling sound-transmitting membrane (464) for contacting the surface of the arc-shaped test piece body (1). The movable cylinder (461) and the space between the sound-transmitting block (462) and the dry coupling sound-transmitting membrane (464) are filled with liquid for causing the dry coupling sound-transmitting membrane (464) to bulge away from the housing (41).
3. The adjusting device according to claim 2, characterized in that, The housing (41) has a liquid storage cylinder (47) on one side. The liquid outlet of the liquid storage cylinder (47) is connected to the movable cylinder (461) through a pipeline. The liquid storage cylinder (47) is equipped with a piston. The piston is driven to move inside the liquid storage cylinder (47) by a telescopic device (48) on the liquid storage cylinder (47) to compress the liquid in the liquid storage cylinder (47) into the movable cylinder (461) or to extract the liquid in the movable cylinder (461). The liquid outlet of the liquid storage cylinder (47) is equipped with a solenoid valve.
4. The adjustment device according to claim 3, characterized in that, The rotation detection mechanism (3) includes a rotating shaft (31) mounted on the positioning support structure (2), a rotating device (32) mounted on the positioning support structure (2) for driving the rotating shaft (31) to rotate, and a telescopic connecting frame (33) with one end sleeved on the outer wall of the rotating shaft (31) and the other end connected to the housing (41).
5. The adjusting device according to claim 4, characterized in that, The rotation detection mechanism (3) further includes a telescopic connecting frame two (34). The telescopic connecting frame two (34) and the telescopic connecting frame one (33) are both slidably sleeved on the outer wall of the rotating shaft (31). The telescopic connecting frame two (34) and the telescopic connecting frame one (33) are connected by a connector (36). One end of the telescopic connecting frame two (34) is equipped with a detection device (35) for detecting groove defects on the surface of the arc-shaped test piece body (1) through a mounting plate. The telescopic connecting frame one (33) is also rotatably connected to one end of the telescopic device two (37) provided on the positioning support structure (2). The telescopic device two (37) is used to drive the telescopic connecting frame one (33) to move along the outer wall of the rotating shaft (31) so that the detection mechanism (4) or the detection device (35) corresponds to the arc-shaped test piece body (1).
6. The adjusting device according to claim 5, characterized in that, The rotation detection mechanism (3) also includes an angle detection device (38) mounted on the rotating shaft (31). The angle detection device (38), the detection device (35), the telescopic device (48) and the solenoid valve are all electrically connected to the controller. The controller includes a receiving module, a comparison module, a recording module and a control module. The receiving module is used to receive data collected by the detection device (35) and angle value data of the rotating shaft (31) collected by the angle detection device (38); The comparison module is used to determine whether a groove defect is present based on the data collected by the detection device (35); The recording module is used to store the current corresponding shaft (31) angle value data and record it as the defect angle position after the comparison module confirms the groove defect; The control module is used to control the opening of the solenoid valve and the movement of the piston by the telescopic device three (48) to a preset position when the rotating shaft (31) rotates to the defect angle position, so as to compress the liquid in the storage tank (47) into the movable cylinder (461).
7. The adjusting device according to claim 6, characterized in that, The positioning support structure (2) includes two sets of parallel transverse frames (21), two sets of support frames (22) connecting the two sets of transverse frames (21) and located at both ends of the transverse frames (21), a bidirectional lead screw (23) rotatably mounted on the transverse frame (21) and extending along the length of the transverse frame (21), sliders (24) rotatably mounted on both ends of the outer wall of the bidirectional lead screw (23) and slidably connected to the transverse frame (21), and a support frame (22) for driving the two bidirectional lead screws (23). The synchronously rotating drive device (27) has an opening on the transverse frame (21) for one end of the slider (24) to pass through. The end of the slider (24) passing through the opening is connected to a clamping block (26) for clamping the arc-shaped test body (1) via a telescopic device (25). The rotating shaft (31) is rotatably located between the two sets of transverse frames (21). The telescopic device (27), the rotating device (32), and the angle detection device (38) are all located on the transverse frame (21).
8. The adjusting device according to claim 6, characterized in that, The controller is also electrically connected to the alarm and the rotating device (32), and the control module is also configured to control the rotating device (32) to shut down when the shaft (31) rotates to the defect angle position, and at the same time control the alarm to work.
9. A method for adjusting the refraction angle of a sound beam on a non-parallel contact surface, utilizing the adjustment device as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: Fix the main body (1) of the arc-shaped test piece onto the positioning support structure (2); S2: By rotating the detection mechanism (3), the detection mechanism (4) is driven to move along the surface of the arc-shaped test piece (1), while the probe body (42) is opened to perform ultrasonic testing on the surface of the arc-shaped test piece (1); S3: During the ultrasonic testing process, according to the real-time testing requirements, the rotating device 2 (44) is controlled to drive the probe body (42) to rotate relative to the outer frame (43) around the first axis and / or drive the outer frame (43) to rotate around the second axis perpendicular to the first axis to dynamically adjust the incident angle of the probe body (42) so that the refraction angle of the sound beam in the test piece meets the testing requirements.