Ultrasonic non-destructive testing device with thickness measuring and flaw detecting functions and technology of ultrasonic non-destructive testing device

Abstract

The invention discloses an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions and a process thereof, and belongs to the field of nondestructive testing of large special equipment. The ultrasonic nondestructive testing device comprises an ultrasonic testing probe, a signal receiving and transmitting module and a data waveform display module, the invention aims at large special equipment nondestructive testing scenes such as narrow space, high-altitude operation, remote command, machine operation and the like, and aims to solve the problems of difficulty in operation, low efficiency and the like when the existing flaw detection instrument combination of an A-type digital ultrasonic detector and an ultrasonic thickness gauge is used in the fields. According to the split type ultrasonic detector, A scanning and thickness measurement are combined, the sound wave processing display part and the sound wave receiving and transmitting part are connected through the wireless communication module, the ultrasonic probe which is specially designed is matched, and the conversion and combination of the thickness measurement function and the flaw detection function can be rapidly achieved.

Description

Technical Field

[0001] The invention relates to the technical field of nondestructive testing of large special equipment, and in particular to an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions and a process thereof. Background Art

[0002] Ultrasonic flaw detection is a method of inspecting defects in parts by using the characteristics of ultrasonic energy penetrating deep into metal materials and reflecting at the edge of the interface when entering another section from one section. When the ultrasonic beam passes from the surface of the part through the probe to the inside of the metal, it will generate reflected waves when encountering defects and the bottom of the part, forming pulse waveforms on the fluorescent screen. The location and size of the defect are determined based on these pulse waveforms. The ultrasonic transmitting and receiving devices with certain characteristics assembled with the transducer as the main component are often called probes. Ultrasonic probes are one of the most important components of ultrasonic testing systems, and their performance directly affects the ultrasonic testing capabilities and effects. Piezoelectric transducer probes are generally composed of piezoelectric chips, damping blocks, connectors, cables, protective films and shells to form oblique probes. There is usually also an oblique wedge that makes the chip form a certain angle with the incident surface. The figure shows the basic structure of the probe.

[0003] Capacitive micromachined ultrasonic transducer (CMUT) is an ultrasonic transducer manufactured by silicon-based microelectromechanical system technology. Its basic unit structure is similar to a capacitor, consisting of a thin film and electrodes. In the receiving mode, the sound wave causes the vibration of the film, changing the capacitance, thereby converting the acoustic signal into an electrical signal.

[0004] A-type digital ultrasonic flaw detector generates an excitation electrical signal through the circuit and transmits it to a crystal with piezoelectric effect (such as quartz, lithium sulfate, etc.), causing it to vibrate and generate ultrasonic waves; when receiving the reflected ultrasonic waves, the piezoelectric crystal will be subjected to the pressure of the reflected sound waves and generate an electrical signal and transmit it to the signal processing circuit for a series of processing. The ultrasonic flaw detector finally forms an image for people to observe and judge. At present, the ultrasonic flaw detector used in the non-destructive testing site of large special equipment has an external size of about (250~300) × (150~180) × (50~80) rectangular parallelepiped, and weighs between 1~2kg. It is generally used with K1~K3 shear wave oblique probes.

[0005] The ultrasonic thickness gauge mainly consists of two parts: the host and the probe. The host circuit includes three parts: the transmitting circuit, the receiving circuit, and the counting and display circuit. The high-voltage shock wave generated by the transmitting circuit excites the probe to generate an ultrasonic pulse wave. The pulse wave is reflected by the medium interface and received by the receiving circuit. After being counted and processed by the single-chip microcomputer, the thickness value is displayed on the LCD. It mainly obtains the thickness of the sample by multiplying the propagation speed of the sound wave in the sample by half of the time it passes through the sample. The external dimensions of the thickness gauge are approximately a rectangular parallelepiped of (60~70)×(120~150)×(25~35), and the weight is about 0.2kg. It is generally used with a dual-crystal straight probe.

[0006] Defects of the existing technology: The two instruments each have a matching probe and operation method. In narrow spaces where thickness measurement and flaw detection need to be frequently and alternately used, and in detection scenarios where human movements are restricted, the detection efficiency is reduced, the operation difficulty is increased, and the on-site instruments are heavy and inconvenient to carry. Switching between instruments also consumes a lot of time and detection consumables. The traditional Type A digital ultrasonic flaw detector is not suitable for two-person cooperation. It cannot be used effectively in certain situations where it is impossible to operate the probe for detection and observe the waveform at the same time after applying the coupling agent (low visibility, the left hand needs to grasp the structure). It is also not suitable for non-destructive testing methods in conjunction with robots. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] The purpose of the present invention is to solve the technical problems existing in the background technology. The present invention proposes an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions and a process thereof. The present invention is aimed at nondestructive testing scenarios of large special equipment such as narrow space, high-altitude operation, remote command, and machine operation. In order to solve the problems of operation difficulty and low efficiency of the existing "A-type digital ultrasonic detector + ultrasonic thickness gauge" flaw detection instrument combination when used in the above sites, a split ultrasonic detector combining A-scan and thickness measurement is proposed. The sound wave processing and display part and the sound wave receiving and transmitting part are connected through a wireless communication module, and a specially designed ultrasonic probe is matched, which can quickly realize the conversion and use of thickness measurement and flaw detection functions.

[0009] The invention provides an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions, comprising an ultrasonic testing probe, a signal receiving and transmitting module and a data waveform display module.

[0010] By adopting the above technical solution, the present solution can achieve the effect of remote telemetry operation of the present device through the separated detection 2 structure and display structure, thereby reducing the difficulty of on-site operation of the staff during the use of the present device.

[0011] Preferably, the ultrasonic detection probe includes a capacitive micro-ultrasonic receiver, the capacitive micro-ultrasonic receiver is electrically connected to a cable, the other end of the cable is electrically connected to a drive circuit, the other end of the drive circuit is connected to a CMUT connector via the cable, and the CMUT connector is communicatively connected to the drive circuit.

[0012] By adopting the above technical solution, this solution can achieve the control effect of the device on the ultrasonic receiver through the combination of the communication connector and the cable, and the structure of the cable can achieve stable signal transmission of the device.

[0013] Preferably, the ultrasonic detection probe includes sound-absorbing material, which is arranged on the outer surface of the shell, the shell cover is arranged on the outside of the capacitive micro-ultrasonic receiver, the side of the shell is connected to the CMUT connector, the side of the shell is penetrated by a PZT connector, the PZT connector is electrically connected to a PZT chip through the cable, the side of the PZT chip is connected to a damping block, the damping block sliding damping is connected to an inclined wedge, and the inclined wedge is connected to the bottom of the inner wall of the shell.

[0014] By adopting the above technical solution, the present solution can adjust the position of the PZT chip through the combination of the damping block and the wedge, thereby realizing position adjustment according to ultrasonic waves.

[0015] Preferably, the signal receiving and transmitting module includes a fuselage, a PZT transceiver line socket is connected to the top of the fuselage, a CMUT receiving line socket is connected to the top of the fuselage, a liquid crystal display is connected to the side of the fuselage, a digital adjustment knob is rotatably connected to the side of the fuselage, and a function switching button is connected to the side of the fuselage.

[0016] By adopting the above technical solution, the present solution can reduce the interaction difficulty of the device through the structure of the liquid crystal display screen.

[0017] Preferably, a fixing strap is connected to the side of the fuselage, a calibration test block is connected to the side of the fuselage, a plurality of control buttons distributed at equal intervals are provided on the fuselage below the liquid crystal display screen, and a charging port is provided at the bottom of the side of the fuselage.

[0018] By adopting the above technical solution, the present invention can achieve the effect of remote control of the device through the control button.

[0019] Preferably, the data waveform display module includes a handle, a wireless communication body is connected to the side of the handle, a waveform digital adjustment knob is rotatably connected to the side of the wireless communication body, a touch display screen is connected to the side of the wireless communication body, a number of equally spaced operation buttons are provided on the side of the wireless communication body, and a waveform charging port is provided on the side of the wireless communication body.

[0020] By adopting the above technical solution, the present solution can improve the structural strength of the display module of the present device through the structure of the wireless communication body, thereby reducing the risk of damage to the present device.

[0021] Preferably, the revealing signal module is communicatively connected to the ultrasonic detection probe via the PZT transceiver line socket and the CMUT receiving line socket, and a battery module is provided inside the fuselage, and the battery module is electrically connected to the liquid crystal display screen.

[0022] By adopting the above technical solution, the present solution can ensure the portability of the device during actual use through the battery module.

[0023] Preferably, a central control module is provided inside the fuselage, the central control module is communicatively connected with the liquid crystal display screen, and the digital adjustment knob is control-connected with the central control module.

[0024] By adopting the above technical solution, this solution can reduce the difficulty of operating the device through the central control module.

[0025] Preferably, an adjustment module is provided inside the wireless communication body, and the adjustment module is control-connected to the waveform digital adjustment knob.

[0026] By adopting the above technical solution, the present solution can reduce the difficulty of adjusting the device through the structure of the adjustment module and thus improve the detection accuracy of the device.

[0027] An ultrasonic nondestructive testing process with thickness measurement and flaw detection functions comprises the following steps: S1. Use the test block to draw the distance-amplitude curve when the probe with various K values ​​is obliquely projected; S2. Select a probe with a certain K value according to the design data, determine the sound velocity in the material to be tested, and use the test block on the right-hand instrument to perform direct calibration of the probe; S3. Place the ultrasonic transceiver part of the right hand into the instrument compartment of the fixing strap, fix it to the right arm, hold the display part with the left hand, and connect the two instruments wirelessly after turning on the equipment. S4. Position the probe in the direction of the signal line connector, with the transverse oblique wave detection surface parallel to that direction and the longitudinal straight wave detection surface intersecting that direction. After determining the thickness measurement point, apply coupling agent there, press the longitudinal straight wave detection surface on the detection surface, and the thickness value will appear on the display interface of the transceiver part; S5. Press the switch button of the transceiver part to the ultrasonic flaw detection part, the display part screen is activated, and the transverse oblique wave detection surface of the probe is pressed on the detection surface to scan, and some detection parameters are displayed on the display screen of the ultrasonic transceiver part, and the display part displays the waveform; S6. During the flaw detection process, you can switch to the thickness measurement mode at any time by pressing a button and rotating the probe to detect suspicious parts; S7. Deal with problems found on site; S8. Issue ultrasonic test report: including thickness measurement and flaw detection data, sharing a test schematic diagram.

[0028] In summary, the present invention includes at least one of the following beneficial effects: The thickness measurement and flaw detection processes are integrated in the same ultrasonic instrument and completed with the same probe, which reduces the difficulty of operation in narrow spaces, simplifies the detection steps, and saves time and energy. The thickness measurement function uses a CMUT sensor to receive ultrasonic waves, which has higher detection sensitivity. The instrument adopts a split design for wireless communication, which is not affected by the length and quality of the signal line. The waveform display module can be placed at any position on the site, and the signal receiving and sending module can be fixed on the body for operation. It is convenient for single-person operation and is also suitable for two-person cooperation to achieve more detailed observation and measurement in areas that were previously difficult to observe. It can also be used for people to control robots (drones) for remote non-destructive testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0030] Figure 1 It is a front view of an embodiment of an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions and a process thereof of the present invention; Figure 2 This is a schematic diagram of the structure of the viewing angle in direction A in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of the direction of the flaw detection sound beam in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of the direction of the flaw detection sound beam in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a signal receiving and transmitting module in an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a data waveform display module in an embodiment of the present invention; Figure 7This is a schematic diagram of the structure of a single-person operation in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a two-person operation in an embodiment of the present invention; Fig. 9 is a working principle diagram in an embodiment of the present invention; Figure numerals: 1. Capacitive micro-ultrasonic receiver; 2. Driving circuit; 3. Cable; 4. CMUT connector; 5. PZT connector; 6. Sound-absorbing material; 7. Wedge; 8. Damping block; 9. PZT chip; 10. Housing; 11. Direction of flaw detection sound beam; 12. Direction of thickness measurement sound beam; 21. PZT transceiver socket; 22. CMUT receiving socket; 23. Digital adjustment knob; 24. Function switching button; 25. Body; 26. Calibration test block; 27. LCD display; 28. Fixing strap; 29. ​​Charging port; 31. Handle; 32. Touch display; 33. Waveform digital adjustment knob; 34. Wireless communication body; 35. Waveform charging port. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-9 The present invention is described in further detail.

[0032] Embodiment 1

[0033] like Figure 1-Figure 9 As shown, in order to solve the existing problems, in this embodiment, the present invention discloses an ultrasonic nondestructive testing device with thickness measurement and flaw detection functions, including an ultrasonic testing probe, a signal receiving and transmitting module, and a data waveform display module.

[0034] The ultrasonic detection probe includes a capacitive micro-ultrasonic receiver 1, which is electrically connected to a cable 3, and the other end of the cable 3 is electrically connected to a drive circuit 2, and the other end of the drive circuit 2 is connected to a CMUT connector 4 through the cable 3, and the CMUT connector 4 is communicatively connected to the drive circuit 2.

[0035] The ultrasonic detection probe includes a sound-absorbing material 6, which is arranged on the outer surface of the shell 10, and the shell 10 is covered on the outside of the capacitive micro-ultrasonic receiver 1. The side of the shell 10 is connected to the CMUT connector 4, and the side of the shell 10 is penetrated by a PZT connector 5. The PZT connector 5 is electrically connected to a PZT chip 9 through the cable 3. The side of the PZT chip 9 is connected to a damping block 8, and the damping block 8 is connected to an inclined wedge 7 for sliding damping, and the inclined wedge 7 is connected to the bottom of the inner wall of the shell 10.

[0036] The signal receiving and transmitting module includes a body 25, a PZT transceiver line socket 21 is connected to the top of the body 25, a CMUT receiving line socket 22 is connected to the top of the body 25, a liquid crystal display screen 27 is connected to the side of the body 25, a digital adjustment knob 23 is rotatably connected to the side of the body 25, and a function switching button 24 is connected to the side of the body 25.

[0037] A fixing strap 28 is connected to the side of the fuselage 25 , a calibration test block 26 is connected to the side of the fuselage 25 , a plurality of control buttons distributed at equal intervals are provided on the fuselage 25 below the liquid crystal display screen 27 , and a charging port 29 is provided at the bottom of the side of the fuselage 25 .

[0038] The data waveform display module includes a handle 31, a wireless communication body 34 is connected to the side of the handle 31, a waveform digital adjustment knob 23 is rotatably connected to the side of the wireless communication body 34, a touch display screen 32 is connected to the side of the wireless communication body 34, a plurality of equally spaced operation buttons are arranged on the side of the wireless communication body 34, and a waveform charging port 35 is arranged on the side of the wireless communication body 34.

[0039] The revealing signal module is connected to the ultrasonic detection probe through the PZT transceiver socket 21 and the CMUT receiving socket 22 . A battery module is provided inside the body 25 , and the battery module is electrically connected to the liquid crystal display screen 27 .

[0040] A central control module is disposed inside the fuselage 25 , and the central control module is communicatively connected with the liquid crystal display screen 27 , and the digital adjustment knob 23 is control-connected with the central control module.

[0041] The wireless communication body 34 is provided with an adjustment module inside, and the adjustment module is control-connected with the waveform digital adjustment knob 23 .

[0042] Embodiment 2

[0043] like Figure 1-Figure 9 As shown, in order to solve the existing problems, in this embodiment, based on the same concept as the above-mentioned embodiment 1, an ultrasonic nondestructive testing process with thickness measurement and flaw detection functions includes the following steps: S1. Use the test block to draw the distance-amplitude curve when the probe with various K values ​​is obliquely projected; S2. Select a probe with a certain K value according to the design data, determine the sound velocity in the material to be tested, and use the test block on the right-hand instrument to perform direct calibration of the probe; S3. Place the ultrasonic transceiver part of the right hand into the instrument compartment of the fixing strap, fix it to the right arm, hold the display part with the left hand, and connect the two instruments wirelessly after turning on the equipment. S4. Position the probe in the direction of the signal line connector, with the transverse oblique wave detection surface parallel to that direction and the longitudinal straight wave detection surface intersecting that direction. After determining the thickness measurement point, apply coupling agent there, press the longitudinal straight wave detection surface on the detection surface, and the thickness value will appear on the display interface of the transceiver part; S5. Press the switch button of the transceiver part to the ultrasonic flaw detection part, the display part screen is activated, and the transverse oblique wave detection surface of the probe is pressed on the detection surface to scan, and some detection parameters are displayed on the display screen of the ultrasonic transceiver part, and the display part displays the waveform; S6. During the flaw detection process, you can switch to the thickness measurement mode at any time by pressing a button and rotating the probe to detect suspicious parts; S7. Deal with problems found on site; S8. Issue ultrasonic test report: including thickness measurement and flaw detection data, sharing a test schematic diagram.

[0044] Embodiment 3

[0045] like Figure 1-Figure 9 As shown, in order to solve the existing problems, based on the same concept as the above-mentioned embodiment 1, the ultrasonic nondestructive testing device with thickness measurement and flaw detection functions and the process thereof further include the following steps: Aiming at non-destructive testing scenarios of large special equipment such as narrow space, high-altitude operation, remote command, and machine operation, the present invention proposes a split ultrasonic detector combining A-scan and thickness measurement to solve the problems of operating difficulties and low efficiency of the existing "A-type digital ultrasonic detector + ultrasonic thickness gauge" flaw detection instrument combination when used in the above-mentioned on-site conditions. The sound wave processing and display part and the sound wave receiving and transmitting part are connected through a wireless communication module, and are equipped with a specially designed ultrasonic probe, which can quickly realize the conversion and use of thickness measurement and flaw detection functions.

[0046] The regular inspection of boilers and pressure vessels includes thickness measurement and ultrasonic testing. The instrument commonly used for thickness measurement is the ultrasonic thickness gauge, which works on the principle of pulse reflection of sound waves. Ultrasonic testing mostly uses A-scan to detect internal flaws in metals, and the principles of the two are basically the same. Before ultrasonic testing, it is necessary to understand the thickness parameters of the location in order to accurately locate the defects. When testing pressure-bearing equipment on site, it is often necessary to carry an ultrasonic thickness gauge and an ultrasonic flaw detector, and use the two instruments alternately. In some testing scenarios where the space is small and the movement of people is restricted, the operation is difficult, time-consuming and laborious. At present, the digital A-scan ultrasonic flaw detectors used by most companies providing non-destructive testing services are mostly handheld. The entire panel is about 20cm long, 15cm wide and 8cm thick. Overall, as a handheld device, the size is not small. The commonly used ultrasonic pulse reflection thickness gauge and A-type pulse reflection ultrasonic flaw detector have the same principle. The difference between the two is that the processing performed after receiving the reflected wave signal from the workpiece is different. The present invention combines the two transmitting circuits of the original ultrasonic flaw detector and thickness gauge into one transmitting circuit, saving the cost and space occupied by the circuit module. For the ultrasonic flaw detection function part, the digital signal of the received electrical pulse signal after passing through the A / D digital-to-analog converter is transmitted to the microprocessor through wireless. The microprocessor and the display are designed together as a separate module, and data is exchanged with the circuit through wireless transmission.

[0047] This detector consists of two parts. The left part includes the flaw detection microprocessor and display. Among them, the adjustment display and related buttons that do not involve waveform display, such as parameter and channel adjustment, are transplanted to the right part. The left part only displays waveforms and positioning parameters, which can be adjusted manually. The related text display such as instrument parameters, flaw detection status, curve settings, probe settings, etc. are all displayed on the second display screen with the original thickness gauge related parameters.

[0048] An ultrasonic detection probe that can measure thickness and detect flaws is designed. During the flaw detection operation, the probe has a structure as shown in the figure. The wedge makes the probe chip form a strict angle with the surface of the workpiece. The probe has the two handheld sides as the front and rear ends. The cross section perpendicular to the axis between the two ends is a right-angle trapezoid. The acute angle of its bottom is the same as the incident angle of the transverse wave oblique probe. The wedge is a cylinder with a cross section as shown in the figure. Its two sides are respectively a thickness measurement surface and a flaw detection surface. The wedge is made of organic glass. At the contact interface between organic glass and air, its longitudinal wave sound pressure reflectivity is close to 100%. Ultrasonic waves are almost completely reflected. The present invention uses the sound waves reflected in the wedge as the emission source for thickness measurement, and uses a new CMUT sensor that is more sensitive in receiving sound waves to design a micro-electromechanical system that surrounds the sound wave emission end of the wedge. The reflected sound waves emitted by the piezoelectric chip will cause its film to vibrate and generate electrical signals. The chip is composed of multiple CMUT microelements connected in parallel. The CMUT cavity spacing changes, causing the capacitance between the plates to change, generating a current signal, and after being processed by a transimpedance amplifier circuit, the ultrasonic electrical signal reception is realized. When the ultrasonic flaw detection working mode is selected, the bottom of the probe is placed on the metal surface, the right-hand instrument is turned on, and the wireless connection module will be automatically started when the flaw detection module is selected. The right-hand instrument will automatically search for a matching left-hand instrument. After the left-hand instrument is turned on and matched successfully, the channel corresponding to the probe K value is selected, and the corresponding parameters such as plate thickness, compensation, sensitivity, and detection standard are set. When performing flaw detection, the right-hand instrument can be bound to the right arm through an armband. Multiple probe channels are stored in the right-hand instrument (input through the right knob and button). Each person can hold one left-hand instrument and share the same right-hand instrument. This saves the space required for on-site detection and the weight of the carrier.

[0049] In some extremely narrow places where it is not suitable for people to directly perform flaw detection operations (pressing the probe to scan the metal surface), the right-hand instrument can be used in combination with a wall-climbing robot (drone) with a coupling agent spraying function. People can observe the waveform on the ground. If they find that the position exceeds the mark line, they can control the robot to check and determine the location and length of the defect. It is also possible to perform thickness measurement on the same part without switching the clamping instrument, just rotating the probe and pressing the switch button. The right-hand instrument will automatically record the well-coupled and stable readings. The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic nondestructive testing device with thickness measurement and flaw detection functions, characterized in that: It includes an ultrasonic detection probe, a signal receiving and transmitting module, and a data waveform display module.

2. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 1, characterized in that: The ultrasonic detection probe comprises a capacitive micro-ultrasonic receiver (1), the capacitive micro-ultrasonic receiver (1) is electrically connected to a cable (3), the other end of the cable (3) is electrically connected to a drive circuit (2), the other end of the drive circuit (2) is connected to a CMUT connector (4) via the cable (3), and the CMUT connector (4) is communicatively connected to the drive circuit (2).

3. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 2, characterized in that: The ultrasonic detection probe comprises a sound absorbing material (6), the sound absorbing material (6) being arranged on the outer surface of the shell (10), the shell (10) being arranged on the outer side of the capacitive micro-ultrasonic receiver (1), the side of the shell (10) being connected to the CMUT connector (4), the side of the shell (10) being connected through a PZT connector (5), the PZT connector (5) being electrically connected to a PZT chip (9) via the cable (3), the side of the PZT chip (9) being connected to a damping block (8), the damping block (8) being connected to an inclined wedge (7) in a sliding damping manner, and the inclined wedge (7) being connected to the bottom of the inner wall of the shell (10).

4. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 3 is characterized in that: The signal receiving and transmitting module comprises a body (25), the top of the body (25) is connected to a PZT receiving and transmitting line socket (21), the top of the body (25) is connected to a CMUT receiving line socket (22), the side of the body (25) is connected to a liquid crystal display screen (27), the side of the body (25) is rotatably connected to a digital adjustment knob (23), and the side of the body (25) is connected to a function switching button (24).

5. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 4, characterized in that: A fixing strap (28) is connected to the side of the fuselage (25), a calibration test block (26) is connected to the side of the fuselage (25), a plurality of control buttons distributed at equal intervals are provided on the fuselage (25) below the liquid crystal display screen (27), and a charging port (29) is provided at the bottom of the side of the fuselage (25).

6. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 5, characterized in that: The data waveform display module comprises a handle (31), a wireless communication body (34) is connected to the side of the handle (31), a waveform digital adjustment knob (23) is rotatably connected to the side of the wireless communication body (34), a touch display screen (32) is connected to the side of the wireless communication body (34), a plurality of equally spaced operation buttons are provided on the side of the wireless communication body (34), and a waveform charging port (35) is provided on the side of the wireless communication body (34).

7. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 6, characterized in that: The revealing signal module is communicatively connected to the ultrasonic detection probe via the PZT transceiver line socket (21) and the CMUT receiving line socket (22); a battery module is provided inside the body (25); and the battery module is electrically connected to the liquid crystal display screen (27).

8. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 7, characterized in that: A central control module is provided inside the fuselage (25), the central control module is in communication connection with the liquid crystal display screen (27), and the digital adjustment knob (23) is in control connection with the central control module.

9. The ultrasonic nondestructive testing device with thickness measurement and flaw detection functions according to claim 8, characterized in that: An adjustment module is provided inside the wireless communication body (34), and the adjustment module is controllably connected to the waveform digital adjustment knob (23).

10. An ultrasonic nondestructive testing process with thickness measurement and flaw detection functions, characterized in that: The following steps are involved: S1. Use the test block to draw the distance-amplitude curve when the probe with various K values ​​is obliquely projected; S2. Select a probe with a certain K value according to the design data, determine the sound velocity in the material to be tested, and use the test block on the right-hand instrument to perform direct calibration of the probe; S3. Place the ultrasonic transceiver part of the right hand into the instrument compartment of the fixing strap, fix it to the right arm, hold the display part with the left hand, and connect the two instruments wirelessly after turning on the equipment. S4. Position the probe in the direction of the signal line connector, with the transverse oblique wave detection surface parallel to that direction and the longitudinal straight wave detection surface intersecting that direction. After determining the thickness measurement point, apply coupling agent there, press the longitudinal straight wave detection surface on the detection surface, and the thickness value will appear on the display interface of the transceiver part; S5. Press the switch button of the transceiver part to the ultrasonic flaw detection part, the display part screen is activated, and the transverse oblique wave detection surface of the probe is pressed on the detection surface to scan, and some detection parameters are displayed on the display screen of the ultrasonic transceiver part, and the display part displays the waveform; S6. During the flaw detection process, you can switch to the thickness measurement mode at any time by pressing a button and rotating the probe to detect suspicious parts; S7. Deal with problems found on site; S8. Issue ultrasonic test report: including thickness measurement and flaw detection data, sharing a test schematic diagram.

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