A calibration device

Abstract

This application discloses a calibration device, relating to the field of ultrasonic flaw detection equipment technology, aiming to solve the problem of how to improve the calibration accuracy of ultrasonic flaw detection equipment. The calibration device is used to calibrate the detection accuracy of ultrasonic flaw detection equipment. The calibration device includes a test block, a driving assembly, a fixing assembly, and a clamping assembly. A detection hole is provided at the target position of the test block. The driving assembly is connected to the clamping assembly, and the fixing assembly is drively connected to the driving assembly. The fixing assembly is adapted to fix the ultrasonic probe assembly, the clamping assembly is used to clamp the test block, and the driving assembly is used to drive the fixing assembly to move, thereby moving the ultrasonic probe assembly along the surface of the test block.

Description

Technical Field

[0001] This application relates to the field of ultrasonic flaw detection equipment technology, and in particular to a calibration device. Background Technology

[0002] Ultrasonic testing equipment is used to detect internal defects in workpieces, such as cracks and weld porosity. However, ultrasonic testing equipment may develop detection deviations after a period of use, leading to a decrease in detection accuracy. Therefore, it needs to be calibrated periodically.

[0003] In the prior art, the ultrasonic probe assembly of a handheld ultrasonic flaw detector is moved along the surface of the test block, and the ultrasonic flaw detector is calibrated by combining the test data of the ultrasonic probe assembly with the test data of the test block.

[0004] However, handheld operation has poor stability, which affects the calibration accuracy of ultrasonic flaw detection equipment. Summary of the Invention

[0005] The purpose of this application is to provide a calibration device that addresses the problem of how to improve the calibration accuracy of ultrasonic flaw detection equipment.

[0006] This application provides a calibration device for calibrating the detection accuracy of an ultrasonic flaw detector. The calibration device includes a test block, a driving component, a fixing component, and a clamping component. The test block has a detection hole at a target position. The driving component is connected to the clamping component, and the fixing component is drivenly connected to the driving component. The fixing component is adapted to fix the ultrasonic probe assembly, the clamping component is used to clamp the test block, and the driving component is used to drive the fixing component to move, thereby moving the ultrasonic probe assembly along the surface of the test block.

[0007] In the above scheme, the test block is clamped by the clamping component, and the ultrasonic probe assembly is moved along the surface of the test block by the driving component to drive the fixing component. This simultaneously improves the stability of the test block and the stability of the ultrasonic probe assembly moving along the surface of the test block, thereby improving the accuracy of the ultrasonic probe assembly in detecting the test hole of the test block and thus improving the calibration accuracy of the ultrasonic flaw detection equipment.

[0008] Optionally, the fixing component includes an elastic structure adapted to connect the ultrasonic probe assembly so that the ultrasonic probe assembly makes elastic contact with the surface of the test block.

[0009] Optionally, the fixing component includes a support member, which is connected to the driving component; The elastic structure includes an elastic element that acts between the support and the ultrasonic probe assembly to allow the ultrasonic probe assembly to move relative to the support.

[0010] Optionally, the elastic structure includes a fastener for securing the ultrasonic probe assembly; The fixing member is movably connected to the side of the support member facing the test block, and the elastic member is connected between the fixing member and the support member.

[0011] Optionally, the elastic structure further includes a guide member, which is fixedly connected to the fixing member and slidably connected to the support member along the arrangement direction of the fixing member and the support member.

[0012] Optionally, the fixing member includes a first fixing member and a second fixing member. The first fixing member is connected to the guide member. The first fixing member has a frame portion, which surrounds the outer periphery of the second fixing member and is detachably connected to the second fixing member. The second fixing member is used to connect the ultrasonic probe assembly.

[0013] Optionally, there are multiple detection holes, which are arranged at intervals along the thickness direction of the test block.

[0014] Optionally, the drive assembly includes a drive member and a transmission assembly that are connected by a transmission, and the fixing assembly includes a support member that is connected to the transmission assembly.

[0015] Optionally, the calibration device further includes a guide structure, which is spaced apart from the transmission assembly along a first direction, with one end of the support member connected to the transmission assembly and the other end connected to the guide structure; The first direction is perpendicular to the direction of movement of the support member and parallel to the surface of the test block facing the fixing component.

[0016] Optionally, the calibration device may further include a detection element for detecting the distance the ultrasonic probe assembly moves relative to the surface of the test block.

[0017] Optionally, the calibration device may further include a limiting element for limiting the movement area of ​​the ultrasonic probe assembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a calibration device provided in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the clamping assembly in the calibration device shown. Figure 3 for Figure 2 A schematic diagram of the clamping assembly shown from another perspective; Figure 4 for Figure 1 A schematic diagram of the drive component in the calibration device shown. Figure 5 for Figure 4 A schematic diagram of the driving component shown from another perspective; Figure 6 for Figure 1 A schematic diagram of the fixed components in the calibration device shown; Figure 7 for Figure 6 A schematic diagram of the fixed component shown from another perspective; Figure 8 for Figure 1 A schematic diagram of the controller of the calibration device shown; Figure 9 for Figure 8 The diagram shows the internal structure of the controller.

[0020] Figure label: 10. Calibration device; 20. Ultrasonic probe assembly; 1. Test block; 2. Drive assembly; 21. Drive component; 22. Transmission assembly; 221. Lead screw; 222. Nut; 23. Coupling; 3. Fixing component; 31. Support component; 32. First fixing component; 321. Enclosure frame; 33. Second fixing component; 34. Elastic component; 35. Guide component; 4. Clamping assembly; 41. Base; 411. Limiting groove; 42. Positioning component; 5. Guide structure; 51. Guide rail; 52. Slider; 6. Inspection items; 7a. First limiting component; 7b. Second limiting component; 8. Controller; 81. Start button; 82. Emergency stop button; 83. Control line interface; 84. Remote control switch; 85. Battery; 86. Charging interface; 87. Motor driver; 88. Stepper controller; 89. Speed ​​control knob; 810. Display window; 811. Handle; 812. Housing. Detailed Implementation

[0021] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0022] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0023] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0024] In the embodiments of this application, "parallel," "perpendicular," and "equal" include the described situation and situations similar to the described situation, where the range of similarity is within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism can be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity can also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality can be, for example, a difference between the two equals being less than or equal to 5% of either one.

[0025] See Figures 1-9 To facilitate understanding of the technical solutions provided in the embodiments of this application, the application scenarios of a calibration device 10 provided in this application are described below.

[0026] The calibration device 10 provided in this application embodiment is mainly used for the calibration of ultrasonic flaw detection equipment, such as phased array ultrasonic testing equipment. Phased array ultrasonic testing equipment uses multi-element transducers of different shapes to generate and receive ultrasonic beams. By controlling the different delay times of the pulses emitted (or received) by each element in the transducer array, the phase relationship when the sound wave arrives at (or originates from) a point within the object is changed, thereby achieving changes in the focal point and beam direction, and thus realizing beam scanning, deflection, and focusing of the ultrasonic waves. Then, a combination of mechanical and electronic scanning methods is used to achieve image imaging.

[0027] When phased array ultrasonic testing equipment uses sector scanning, differences in wedge attenuation, inter-element crystal differences, and differences in sound pressure reciprocating transmittance lead to variations in the echo amplitude of reflectors of the same size at the same sound path for different angles of the sound beam. Software is used to correct these differences to achieve uniform amplitude, thus achieving angle gain calibration. Simultaneously, gain correction is applied to the echoes of reflectors of the same size at different sound paths to achieve uniform amplitude, achieving time gain calibration. However, this calibration requires the probe to use detection holes of different depths on test block 1 to correct for sensitivity differences caused by variations in the position of the sound beam and excitation aperture at each angle. Currently, the calibration of phased array ultrasonic testing equipment typically involves hand-holding the ultrasonic probe assembly 20 on test block 1. During calibration, the pressure and movement between the ultrasonic probe assembly 20 and test block 1 are prone to change, resulting in suboptimal calibration accuracy.

[0028] To solve the above problems, see Figure 1 , Figure 2 and Figure 3 This application provides a calibration device 10 for calibrating the detection accuracy of an ultrasonic flaw detector. The calibration device 10 includes a test block 1, a driving assembly 2, a fixing assembly 3, and a clamping assembly 4. The test block 1 has a detection hole at a target position. The driving assembly 2 is connected to the clamping assembly 4, and the fixing assembly 3 is drively connected to the driving assembly 2. The fixing assembly 3 is adapted to fix an ultrasonic probe assembly 20, the clamping assembly 4 is used to clamp the test block 1, and the driving assembly 2 is used to drive the fixing assembly 3 to move, thereby causing the ultrasonic probe assembly 20 to move along the surface of the test block 1.

[0029] In the above scheme, the test block 1 is clamped by the clamping component 4, and the ultrasonic probe component 20 is moved along the surface of the test block 1 by the driving component 2 driving the fixing component 3. This simultaneously improves the stability of the test block 1 and the stability of the ultrasonic probe component 20 moving along the surface of the test block 1, thereby improving the accuracy of the ultrasonic probe component 20 in detecting the test hole of the test block 1, and thus improving the calibration accuracy of the ultrasonic flaw detection equipment.

[0030] Since the shape, position, and other parameters of the detection hole in test block 1 are fixed values, the data detected by the ultrasonic probe assembly 20 should be unique. When there is a difference between the data detected by the ultrasonic probe assembly 20 and the data that should be detected, it indicates that there is an error in the detection accuracy of the ultrasonic probe assembly 20. The detection data of the ultrasonic probe assembly 20 can be corrected by using the data that should be detected by test block 1 to calibrate the detection accuracy of the ultrasonic flaw detection equipment.

[0031] In some examples, the driving component 2 is a linear driving component 2, which can drive the fixed component 3 to move along the length direction of the test block 1, thereby driving the ultrasonic probe component 20 to move along the surface of the test block 1.

[0032] In some examples, the clamping assembly 4 includes a base 41 and a positioning element 42, wherein the base 41 supports the test block 1, and the positioning element 42 fixes the test block 1 to the base 41. Exemplarily, the base 41 is provided with a limiting groove 411 or a limiting protrusion, which limits the position of the test block 1 on the base 41. The positioning element 42 can be a top bolt or a pressure block, etc. For example, the base 41 is provided with a limiting groove 411, at least one side of which has a threaded hole. The top bolt is connected to the threaded hole, and when the top bolt rotates, it moves toward or away from the test block 1 under the action of the threaded hole structure to clamp or release the test block 1. Alternatively, the positioning element 42 can be a pressure block, which is bolted to the base 41, and at least a portion of the pressure block is located above the test block 1. When the bolt is tightened, the pressure block cooperates with the base 41 to apply a clamping force to the test block 1 to fix it.

[0033] In some implementations, see Figure 1 , Figure 6 and Figure 7 The fixing component 3 includes an elastic structure adapted to connect the ultrasonic probe assembly 20 so that the ultrasonic probe assembly 20 makes elastic contact with the surface of the test block 1.

[0034] In the above scheme, the elastic structure ensures that the ultrasonic probe assembly 20 and the surface of the test block 1 are in elastic contact, guaranteeing a stable contact state and avoiding fluctuations in contact state that could affect detection accuracy. Specifically, the elastic contact between the ultrasonic probe assembly 20 and the surface of the test block 1 ensures a tight fit and uniform, stable coupling between the working surface of the ultrasonic probe assembly 20 and the surface of the test block 1, reducing ultrasonic reflection loss caused by air gaps and improving the intensity and stability of the echo signal. It also adapts to slight unevenness and tilt of the test block 1, avoiding localized suspension and poor coupling caused by hard contact. Simultaneously, it buffers the pressure applied, preventing damage to the probe chip, and ensures consistent sound beam propagation, guaranteeing good repeatability of calibration and flaw detection data and reducing detection errors.

[0035] For example, the elastic structure includes springs, rubber parts, etc., disposed between the ultrasonic probe assembly 20 and the fixing assembly 3, so that the ultrasonic probe assembly 20 floats relative to the fixing assembly 3 and makes elastic contact with the surface of the test block 1.

[0036] In some implementations, see Figure 1 , Figure 6 and Figure 7 The fixing component 3 includes a support member 31, which is connected to the drive component 2. The elastic structure includes an elastic member 34, which acts between the support member 31 and the ultrasonic probe assembly 20 to allow the ultrasonic probe assembly 20 to move relative to the support member 31.

[0037] In the above scheme, the elastic element 34 acts between the support element 31 of the fixed component 3 and the ultrasonic probe assembly 20, so that the ultrasonic probe assembly 20 can float relative to the fixed component 3. The structure is simple and easy to assemble.

[0038] For example, the support member 31 can be connected to the output end of the drive assembly 2 via bolts or other connecting members, or via a snap-fit ​​structure or the like.

[0039] For example, one end of the elastic member 34 abuts against the support member 31, and the other end abuts against the ultrasonic probe assembly 20. When the ultrasonic probe assembly 20 overcomes the elastic force of the elastic member 34, it can move relative to the support member 31.

[0040] In some implementations, see Figure 1 , Figure 6 and Figure 7 The elastic structure includes a fixing member for fixing the ultrasonic probe assembly 20. The fixing member is movably connected to the side of the support member 31 facing the test block 1, and the elastic member 34 is connected between the fixing member and the support member 31.

[0041] In the above solution, the ultrasonic probe assembly 20 is fixed by a fastener, thereby improving the stability of the ultrasonic probe.

[0042] For example, the fixing member and the support member 31 are slidably connected so that the ultrasonic probe assembly 20 can float relative to the fixing member; or, the fixing member and the support member 31 are hinged, and the elastic member 34 is supported between the fixing member and the support member 31 and is located away from the hinge point between them so that the fixing member can rotate relative to the support member 31, thereby enabling the ultrasonic probe assembly 20 to float relative to the fixing member.

[0043] In some implementations, see Figure 1 , Figure 6 and Figure 7The elastic structure also includes a guide member 35, which is fixedly connected to the fixing member and slidably connected to the support member 31 along the arrangement direction of the fixing member and the support member 31.

[0044] In the above scheme, the fixing member is guided and connected to the support member 31 through the guide member 35, which improves the stability of the ultrasonic probe assembly 20 relative to the support member 31, thereby improving the detection accuracy of the ultrasonic probe assembly 20.

[0045] In some examples, the guide 35 can be a guide post. For example, the fixing member is provided with multiple guide posts, the support member 31 is provided with a guide hole, the guide post passes through the guide hole, and a limiting structure is provided at the end of the guide post away from the fixing member, so that the fixing member and the support member 31 are slidably connected along the extension direction of the guide 35.

[0046] In other examples, the guide 35 can be a slide rail, the support 31 is provided with a corresponding slide groove, the slide rail and the slide groove slide together, one end of the slide rail is connected to the fixing member, and the other end is provided with a limiting structure.

[0047] In some examples, the guide 35 and the fixing member are integrally formed, or the guide 35 and the fixing member are detachably connected.

[0048] For example, there may be multiple guide members 35, which are arranged at intervals to improve the stability of the fixing member relative to the support member 31.

[0049] In some implementations, see Figure 1 , Figure 6 and Figure 7 The fixing component includes a first fixing component 32 and a second fixing component 33. The first fixing component 32 is connected to the guide component 35. The first fixing component 32 is provided with a frame portion 321. The frame portion 321 surrounds the outer periphery of the second fixing component 33 and is detachably connected to the second fixing component 33. The second fixing component 33 is used to connect the ultrasonic probe assembly 20.

[0050] In the above scheme, the fixing components are configured as a first fixing component 32 and a second fixing component 33 that can be detachably connected, which improves the convenience of connecting the fixing components with the ultrasonic probe assembly 20.

[0051] In some examples, the second fastener 33 secures the ultrasonic probe assembly 20 with a bolt or other connector. For example, the second fastener 33 has a threaded hole, and the ultrasonic probe assembly 20 has a corresponding through hole. The bolt passes through the through hole and connects to the threaded hole to secure the ultrasonic probe assembly 20 to the second fastener 33.

[0052] In other examples, a second fastener 33 is provided in the receiving cavity and the cover plate, the ultrasonic probe assembly 20 is received in the receiving cavity and confined within the receiving cavity by the cover plate.

[0053] In some examples, the guide 35 is connected to the frame portion 321, which can drive the second fixing member 33 to move relative to the support member 31 along the guide 35, so that the ultrasonic probe assembly 20 is floatingly connected to the calibration device 10.

[0054] For example, the fixing component 3 also includes a top bolt, the frame portion 321 is provided with a threaded hole, the top bolt is connected to the threaded hole, and one end abuts against the second fixing member 33 to fix the second fixing member 33 in the space surrounded by the frame portion 321.

[0055] In some implementations, see Figure 1 There are multiple detection holes, which are arranged at intervals along the thickness direction of the test block 1.

[0056] In the above scheme, by setting multiple detection holes, the calibration accuracy of the ultrasonic probe assembly 20 can be improved. Specifically, by setting multiple detection holes of different depths, diameters, and positions, the test block 1 can complete the calibration of the entire ultrasonic testing system at one time by relying on multi-path reflection signals: the instrument baseline, sound velocity, and zero point are calibrated using holes of varying depths to ensure accurate defect location; distance-amplitude DAC curves are plotted using holes of the same diameter but different depths to achieve quantitative defect assessment; at the same time, probe sensitivity, beam spread angle, and near-far resolution can be verified; and the defect equivalent can be calibrated through detection holes of different diameters to meet all calibration requirements, including ranging, quantitative analysis, and probe performance verification.

[0057] For example, the number of detection holes can be 2, 3, 4, etc.

[0058] For example, the multiple detection holes can be the same size or different sizes.

[0059] In some implementations, see Figure 1 , Figure 4 and Figure 5 The drive assembly 2 includes a drive member 21 and a transmission assembly 22 that are connected by a transmission. The fixed assembly 3 includes a support member 31, which is connected to the transmission assembly 22.

[0060] In the above scheme, the driving component 21 drives the support component 31 to move through the transmission component 22, thereby driving the ultrasonic probe assembly 20 to move along the surface of the test block 1. The structure is simple and improves the stability of the movement of the ultrasonic probe assembly 20.

[0061] In some examples, the drive element 21 can be a rotary drive element 21 such as an electric motor or a pneumatic motor.

[0062] In some examples, the transmission assembly 22 includes a lead screw 221 and a nut 222. The nut 222 is fixedly connected to the support member 31 and is also connected to the lead screw 221 via a transmission connection. One end of the lead screw 221 is connected to the output end of the drive member 21 via a coupling 23. When the drive member 21 rotates, it drives the lead screw 221 to rotate. The lead screw 221 drives the nut 222 to move axially along the lead screw 221 via a threaded structure, which in turn drives the support member 31 and the ultrasonic probe assembly 20 to move axially along the lead screw 221, thereby enabling the ultrasonic probe assembly 20 to move along the surface of the test block 1.

[0063] In other examples, the transmission assembly 22 includes sprockets and a chain, wherein at least two sprockets are spaced apart along the extension direction of the test block 1 and are rotatably connected to the clamping assembly 4, and the chain is driven between the at least two sprockets. The support member 31 is fixedly connected to the chain, and the drive member 21 is drivenly connected to one of the sprockets. When the drive member 21 drives the sprocket to rotate, the sprocket drives the chain to run, the chain drives the support member 31 to move, thereby enabling the support member 31 to drive the ultrasonic probe assembly 20 to move along the surface of the test block 1.

[0064] In some other embodiments, the drive assembly 2 includes a linear drive element 21, such as a cylinder or an electric actuator. One end of the linear drive element 21 is connected to the support element 31 to drive the support element 31 and the ultrasonic probe assembly 20 to move relative to the test block 1.

[0065] In some implementations, see Figure 1 , Figure 2 and Figure 6 The calibration device 10 also includes a guide structure 5, which is spaced apart from the transmission assembly 22 along a first direction. One end of the support member 31 is connected to the transmission assembly 22, and the other end is connected to the guide structure 5. The first direction is perpendicular to the moving direction of the support member 31 and parallel to the surface of the test block 1 facing the fixing assembly 3.

[0066] In the above scheme, by setting the guide structure 5, the smoothness of the movement of the ultrasonic probe assembly 20 is improved, thereby improving the detection accuracy.

[0067] In some examples, the guide structure 5 includes a guide rail 51 and a slider 52. The guide rail 51 extends along the driving direction of the drive assembly 2, and the slider 52 is slidably connected to the guide rail 51 and fixedly connected to the support member 31. When the drive assembly 2 drives the support member 31 to move, the support member 31 moves synchronously along the guide rail 51 with the help of the slider 52.

[0068] In other examples, the guide structure 5 includes a guide sleeve and a guide post. The guide post extends along the driving direction of the drive member 21, and the guide sleeve is fitted onto the guide post and fixedly connected to the support member 31. When the drive assembly 2 drives the support member 31 to move, the support member 31 slides synchronously along the guide post with the aid of the guide sleeve.

[0069] In some implementations, see Figure 1 , Figure 4 and Figure 5 The calibration device 10 also includes a detection element 6, which is used to detect the movement distance of the ultrasonic probe assembly 20 relative to the surface of the test block 1.

[0070] In the above scheme, the detection component 6 can detect the movement distance of the ultrasonic probe assembly 20 relative to the surface of the test block 1, accurately match the scanning position of the ultrasonic probe assembly 20 with the sound path of the detection hole, ensure the data accuracy of DAC curve plotting and probe beam performance verification, eliminate positional errors caused by manual movement, and simultaneously link the waveform recording coordinates for easy data traceability.

[0071] In some examples, the detection element 6 includes an encoder connected to the transmission assembly 22, which records the displacement distance of the ultrasonic probe assembly 20 by recording the rotation angle of the drive element 21 in conjunction with the lead screw 221.

[0072] In other examples, the detection element 6 may also include a grating ruler, an infrared range sensor, a laser range sensor, etc.

[0073] In some implementations, see Figure 1 and Figure 4 The calibration device 10 also includes a limiting member for limiting the movement area of ​​the ultrasonic probe assembly 20.

[0074] In the above scheme, by setting a limiting component, the ultrasonic probe assembly 20 is prevented from being damaged by bumps, and the start and end references for each calibration are the same, thereby improving the repeatability of calibration data and measurement accuracy.

[0075] For example, there can be multiple limiting members, including a first limiting member 7a and a second limiting member 7b. The first limiting member 7a and the second limiting member 7b are spaced apart along the moving direction of the support member 31 and cooperate with the support member 31 to limit movement.

[0076] For example, the limit element can be one or a combination of multiple types such as limit switch, photoelectric limit switch, and magnetic proximity switch.

[0077] In some implementations, see Figure 1 , Figure 8 and Figure 9 The calibration device 10 also includes a controller 8, which is used to control the operating status of the calibration device 10.

[0078] For example, the controller 8 includes a start button 81 and an emergency stop button 82, wherein the start button 81 is used to control the start and stop of the controller 8, and the emergency stop button 82 is used to cut off the power supply to the controller 8 in an emergency to stop the operation of the calibration device 10.

[0079] For example, the controller 8 includes a control line interface 83, which connects electrical components via a control line structure and outputs control signals, etc.

[0080] For example, the controller 8 includes a remote control switch 84, which enables wireless control of the controller 8 by setting the remote control switch 84, thereby improving the convenience of operation.

[0081] For example, the controller 8 includes a battery 85 and a charging interface 86. By setting up the battery 85 and the charging interface 86, the calibration device 10 is made portable, which improves the flexibility of use.

[0082] For example, the controller 8 includes a motor driver 87, which controls the operating state of the drive unit 21.

[0083] For example, the controller 8 includes a stepper controller 888, which controls the advance operation of the drive unit 21.

[0084] For example, the controller 8 includes a speed control knob 89, which controls the operating speed of the drive unit 21 by rotating the knob.

[0085] For example, the controller 8 includes a display window 810, which can be used to display the power level, the operating status of the drive unit 21, etc.

[0086] For example, the controller 8 includes a handle 811, which improves the portability of the calibration device 10.

[0087] For example, the controller 8 includes a housing 812 that encloses a portion of the aforementioned components to provide protection for the components and improve their service life.

[0088] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0089] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A calibration device for calibrating the detection accuracy of ultrasonic flaw detection equipment, characterized in that, The calibration device includes a test block, a driving component, a fixing component, and a clamping component. The test block has a detection hole at the target position. The driving component is connected to the clamping component, and the fixing component is drivenly connected to the driving component. The fixing component is adapted to fix the ultrasonic probe assembly, the clamping component is used to clamp the test block, and the driving component is used to drive the fixing component to move so as to move the ultrasonic probe assembly along the surface of the test block.

2. The calibration device according to claim 1, characterized in that, The fixing component includes an elastic structure adapted to connect the ultrasonic probe assembly so that the ultrasonic probe assembly makes elastic contact with the surface of the test block.

3. The calibration device according to claim 2, characterized in that, The fixing component includes a support member, which is connected to the driving component; The elastic structure includes an elastic element that acts between the support and the ultrasonic probe assembly to allow the ultrasonic probe assembly to move relative to the support.

4. The calibration device according to claim 3, characterized in that, The elastic structure includes a fixing member for fixing the ultrasonic probe assembly; The fixing member is movably connected to the side of the support member facing the test block, and the elastic member is connected between the fixing member and the support member.

5. The calibration device according to claim 4, characterized in that, The elastic structure further includes a guide member, which is fixedly connected to the fixing member and slidably connected to the support member along the arrangement direction of the fixing member and the support member.

6. The calibration apparatus according to claim 5, characterized in that, The fixing component includes a first fixing component and a second fixing component. The first fixing component is connected to the guide component, and the first fixing component has a frame portion. The frame portion surrounds the outer periphery of the second fixing component and is detachably connected to the second fixing component. The second fixing component is used to connect the ultrasonic probe assembly.

7. The calibration apparatus according to any one of claims 1-6, characterized in that, The detection holes are multiple, and the multiple detection holes are arranged at intervals along the thickness direction of the test block.

8. The calibration apparatus according to any one of claims 1-6, characterized in that, The drive assembly includes a drive member and a transmission assembly that are connected by a transmission, and the fixing assembly includes a support member that is connected to the transmission assembly.

9. The calibration apparatus according to claim 8, characterized in that, It also includes a guide structure, which is arranged at intervals with the transmission assembly along a first direction, and one end of the support member is connected to the transmission assembly and the other end is connected to the guide structure; The first direction is perpendicular to the direction of movement of the support member and parallel to the surface of the test block facing the fixing component.

10. The calibration apparatus according to any one of claims 1-6, characterized in that, It also includes a detection element for detecting the distance the ultrasonic probe assembly moves relative to the surface of the test block; And / or, it also includes a limiting member for limiting the movement area of ​​the ultrasonic probe assembly.

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