CN216285086U - Time base line fast correction auxiliary device for A-type ultrasonic flaw detector - Google Patents
Time base line fast correction auxiliary device for A-type ultrasonic flaw detector Download PDFInfo
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- CN216285086U CN216285086U CN202122623174.1U CN202122623174U CN216285086U CN 216285086 U CN216285086 U CN 216285086U CN 202122623174 U CN202122623174 U CN 202122623174U CN 216285086 U CN216285086 U CN 216285086U
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Abstract
The utility model relates to an A-type ultrasonic flaw detector time base line quick correction auxiliary device which comprises a shell, a time delay block, an ultrasonic transceiving component, an acoustic damping block and an ultrasonic flaw detector connecting joint, wherein the ultrasonic transceiving component comprises a piezoelectric ceramic piece and a reflecting piece or two piezoelectric ceramic pieces which are oppositely arranged at two ends of the time delay block, the piezoelectric ceramic piece is used for transmitting ultrasonic waves to the time delay block or receiving the transmitted ultrasonic waves when the piezoelectric ceramic piece is excited by pulses, the reflecting piece is used for reflecting the ultrasonic waves, the time delay block is used for transmitting the ultrasonic waves to generate fixed time delay, the acoustic damping block is used for eliminating back reflection of the piezoelectric ceramic piece, and the ultrasonic flaw detector connecting joint is electrically connected with the piezoelectric ceramic pieces. The utility model can finish time base line correction only by two steps of time expansion and horizontal displacement, has fast adjustment speed and high precision, can improve the flaw detection positioning precision of the ultrasonic flaw detector, and has convenient use and wide application range.
Description
Technical Field
The utility model relates to the technical field of ultrasonic flaw detection, in particular to a time base line quick correction auxiliary device for an A-type ultrasonic flaw detector.
Background
Ultrasonic detection is a means widely used in the field of nondestructive testing at present, and A-type ultrasonic flaw detection is most widely used. The A-type ultrasonic flaw detection is that ultrasonic waves are reflected when encountering a flaw (a heterogeneous interface with different acoustic impedances) in the propagation of a detected material, a reflected signal is received by an instrument, and the position of the flaw is determined according to the time of transmitting the signal and the time of receiving the signal. Because the protective film, the waveform conversion module, the acoustic lens, the delay block, the coupling layer and the like of the instrument circuit and the ultrasonic probe can generate time delay, the starting position time of the probe is different from the time zero point of the instrument after the flaw detector is connected with the probe under most conditions. Therefore, before performing the type a ultrasonic testing work, the time base needs to be adjusted for the apparatus.
The traditional method for adjusting the time base line is to use a flaw detector, a probe and a commodity test block combination to adjust the position of the reflected wave of the test block on the instrument. In the prior art, an error size is often provided by a manufacturer and is adjusted according to the error size during adjustment, but due to aging of an instrument circuit or surface abrasion of an ultrasonic probe and the like, time delay is changed, and the error size provided by the manufacturer cannot be used. Therefore, in the adjustment process, a plurality of function keys are often used for repeated adjustment, so that the time base line of the instrument and the flaw detection distance form a corresponding proportional relation. This method has the following disadvantages: firstly, the adjustment time is long, the skilled worker needs several minutes, and the unskilled worker needs more than ten minutes or even longer; secondly, a commodity test block is needed to be used for adjustment, the material of the commodity test block is different from that of a detected material, and time correction errors are large due to the fact that some sound velocities are different by tens of meters per second; thirdly, the commodity test block has high price, heavy weight and large volume, and brings inconvenience to field and high-altitude operation; and fourthly, probes with special purposes and special shapes cannot be accurately corrected by using test blocks because no suitable commercial test blocks exist.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to overcome the defects of the prior art and provides the A-type ultrasonic flaw detector time base line quick correction auxiliary device which has the advantages of high adjustment speed, high precision, convenience and quickness in use and wide application range, and can improve the flaw detection positioning precision of the ultrasonic flaw detector.
The utility model adopts the following technical scheme:
the A-type ultrasonic flaw detector time baseline rapid correction auxiliary device comprises a shell, a time delay block, an ultrasonic receiving and transmitting assembly acoustic damping block and an ultrasonic flaw detector connecting joint; the ultrasonic receiving and transmitting component comprises a piezoelectric ceramic piece and a reflector plate, the piezoelectric ceramic piece and the reflector plate are oppositely arranged at two ends of the time delay block, the reflector plate is used for reflecting ultrasonic waves, and the piezoelectric ceramic piece is used for transmitting the ultrasonic waves to the time delay block and receiving the ultrasonic waves reflected by the reflector plate when being excited by pulses; or the ultrasonic receiving and transmitting component comprises two piezoelectric ceramic pieces which are oppositely arranged at two ends of the time delay block, one piezoelectric ceramic piece is used as a transmitting end for transmitting ultrasonic waves to the time delay block when being excited by pulses, and the other piezoelectric ceramic piece is used as a receiving end for receiving the ultrasonic waves output by the time delay block; the time delay block is used for transmitting ultrasonic waves to generate fixed time delay, the acoustic damping block is arranged on the back of the piezoelectric ceramic piece and used for eliminating back reflection of the piezoelectric ceramic piece, and the connecting joint of the ultrasonic flaw detector is used for connecting the ultrasonic flaw detector and is electrically connected with the piezoelectric ceramic piece.
Furthermore, the A-type ultrasonic flaw detector time baseline rapid correction assistor further comprises a probe connecting joint and a change-over switch, wherein the probe connecting joint is used for connecting the ultrasonic probe and is electrically connected with the ultrasonic flaw detector connecting joint, and the change-over switch is used for controlling the ultrasonic flaw detector connecting joint to be conducted with one of the piezoelectric ceramic piece and the probe connecting joint.
Furthermore, the A-type ultrasonic flaw detector time base line quick correction auxiliary device is also provided with a plurality of miniature test blocks, and the miniature test blocks made of different materials are respectively used for flaw detection of workpieces to be detected made of the same materials.
Furthermore, a clutter elimination block is arranged on the side face of the time delay block and used for eliminating useless ultrasonic waves around the time delay block.
Furthermore, a matching circuit is electrically connected between the piezoelectric ceramic plate and the ultrasonic wave connecting joint.
Further, the ultrasonic flaw detector connecting joint and the probe connecting joint are respectively connected with the ultrasonic flaw detector and the ultrasonic probe through cables.
Furthermore, the reflecting surface of the reflecting sheet forms a smooth plane, and the reflecting sheet and the time delay block are made of different materials.
Further, the acoustic damping block surrounds the back and sides of the piezoelectric ceramic plate to narrow the piezoelectric ceramic plate pulse.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
firstly, the adjustment time is short, the time base line correction auxiliary device can be used for correcting the time base line of the ultrasonic flaw detector, only two function keys of a sound stroke key and a horizontal displacement key are needed, the time base line correction can be completed through two steps of time expansion and horizontal displacement, visual inspection is not needed, human factors can be excluded, the adjustment speed is high, the accuracy is high, skilled personnel can complete the adjustment within a few seconds, unskilled personnel can complete the adjustment within 20 seconds, and the adjustment is convenient and quick.
Secondly, the miniature test block is made of the same material as the workpiece to be detected, so that the calibration time of the time base line correction auxiliary device is consistent with the sound propagation time of the actual detection material, the time base line correction precision is higher, and the detection positioning precision of the ultrasonic flaw detector can be improved.
Thirdly, the portable and universal miniature test block is configured, so that the price is low, the weight is small, the size is small, the commodity test block with large weight and large size does not need to be carried, and the field and high-altitude flaw detection of operators is facilitated; in addition, the volume is small, so that the device is also suitable for the calibration of probes with special purposes and special shapes, and the application range is wide.
Fourthly, the utility model can generate fixed time delay through the time delay block so as to enable the piezoelectric ceramic piece to generate electric pulse signals with equal interval time, can realize the time synchronization of echo pulse and pulse signals transmitted by the ultrasonic flaw detector, and can effectively ensure the time base line correction precision.
Fifthly, the ultrasonic flaw detector connecting joint, the probe connecting joint and the change-over switch are arranged, the state switching is carried out through the change-over switch, the cable does not need to be repeatedly plugged and pulled in the adjusting process, the adjustment can be completed at one time, and the use is more convenient; meanwhile, the ultrasonic flaw detector, the ultrasonic probe and the corresponding connecting joint are connected through cables, and a universal plug is adopted, so that the problem of non-universal joint can be avoided, and the application range is wider.
Drawings
FIG. 1 is a schematic sectional view showing a time base correction auxiliary device for an ultrasonic flaw detector type A according to example 1 of the present invention;
FIG. 2 is a schematic perspective view of a time base correction auxiliary device for an ultrasonic flaw detector type A according to example 1 of the present invention;
fig. 3 is a schematic perspective view of an ultrasonic probe and a micro test block in a calibration process according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing a state of use of the micro test block of embodiment 1 of the present invention in a straight probe;
FIG. 5 is an electrical wiring diagram of the type A ultrasonic flaw detector time base correction auxiliary of embodiment 1 of the present invention;
FIG. 6 is a schematic perspective view of a time base correction auxiliary device for an ultrasonic flaw detector type A according to example 2 of the present invention;
FIG. 7 is a schematic sectional view showing a time base correction auxiliary device for an ultrasonic flaw detector type A according to example 3 of the present invention;
FIG. 8 is an electrical wiring diagram of a type A ultrasonic flaw detector time base correction auxiliary device according to embodiment 3 of the present invention;
fig. 9 is a schematic sectional view showing a time base correction auxiliary device for an a-type ultrasonic flaw detector according to embodiment 4 of the present invention.
In the figure: 1. the ultrasonic flaw detector comprises a shell, 2 parts of a piezoelectric ceramic plate, 3 parts of a time delay block, 4 parts of a reflector plate, 5 parts of an acoustic damping block, 6 parts of an ultrasonic flaw detector connecting joint, 61 parts of an ultrasonic flaw detector transmitting end joint, 62 parts of an ultrasonic flaw detector receiving end joint, 7 parts of a probe connecting joint, 71 parts of an ultrasonic probe transmitting end, 72 parts of an ultrasonic probe receiving end, 8 parts of a change-over switch, 9 parts of a clutter eliminating block, 10 parts of a matching circuit, 11 parts of an ultrasonic probe and 12 parts of a miniature test block.
Detailed Description
The utility model is further described below by means of specific embodiments.
Example 1
Referring to fig. 1 to 5, the a-type ultrasonic flaw detector time base line fast correction auxiliary device of the present invention includes a housing 1, a time delay block 3, an ultrasonic transceiver module, an acoustic damping block 5, a clutter elimination block 9, two ultrasonic flaw detector connection joints 6, two probe connection joints 7, a change-over switch 8, and a plurality of micro test blocks 12. The ultrasonic transceiving component comprises a piezoelectric ceramic piece 2 and a reflector plate 4. The ultrasonic flaw detector is characterized in that the piezoelectric ceramic piece 2, the time delay block 3, the reflector plate 4, the acoustic damping block 5 and the clutter elimination block 9 are arranged in the shell 1, and the ultrasonic flaw detector connecting joint 6, the probe connecting joint 7 and the change-over switch 8 are arranged on the shell 1. The two ultrasonic flaw detector connecting joints 6 are respectively an ultrasonic flaw detector transmitting end joint 61 and an ultrasonic flaw detector receiving end joint 62, and the two probe connecting joints 7 are respectively an ultrasonic probe transmitting end 71 and an ultrasonic probe receiving end 72. The piezoelectric ceramic piece 2 and the reflector plate 4 are oppositely arranged at two ends of the time delay block 3, and the reflector plate 4 is used for reflecting ultrasonic waves; the piezoelectric ceramic piece 2 is used for transmitting ultrasonic waves to the delay block and receiving the ultrasonic waves reflected by the reflector plate 4 when being excited by pulses; the time delay block 3 is used for transmitting ultrasonic waves to generate fixed time delay; the acoustic damping block 5 is arranged on the back of the piezoelectric ceramic piece 2, surrounds the back and the side of the piezoelectric ceramic piece 2, and is used for eliminating the back reflection of the piezoelectric ceramic piece 2 and narrowing the pulse. The clutter elimination block 9 is disposed at the side of the time delay block 3, and is used for eliminating useless ultrasonic waves around the time delay block 3. The ultrasonic flaw detector connecting joint 6 is used for connecting an ultrasonic flaw detector and is electrically connected with the piezoelectric ceramic piece 2. The probe connecting joint 7 is used for connecting the ultrasonic probe 11 and is electrically connected with the ultrasonic flaw detector connecting joint 6. The change-over switch 8 is a double-pole double-throw switch and is used for controlling the conduction of the ultrasonic flaw detector connecting joint 6 and one of the piezoelectric ceramic plate 2 and the probe connecting joint 7. The miniature test blocks made of different materials are respectively used for flaw detection of workpieces to be detected made of the same materials.
The piezoelectric ceramic piece 2 is made of a composite piezoelectric ceramic material for transmitting longitudinal waves. The time delay block 3 is made of materials with small ultrasonic failure, uniform materials and small thermal expansion coefficient, and can ensure the correction precision. The reflecting surface of the reflector plate 4 forms a smooth plane, and the reflector plate 4 and the time delay block 3 are made of different materials. The clutter elimination block 9 forms a rough interface to scatter the ultrasonic waves to attenuate loss, and the ultrasonic waves are absorbed by a sound absorption material to attenuate loss, specifically a rubber material. The ultrasonic flaw detector connecting joint 6 and the probe connecting joint 7 are respectively connected with the ultrasonic flaw detector and the ultrasonic probe 11 through cables.
And a matching circuit 10 is electrically connected between the piezoelectric ceramic piece 2 and the ultrasonic wave connecting joint. The matching circuit 10 is implemented by the prior art, and is not described herein again for implementing impedance matching between the piezoelectric ceramic plate 2 and the ultrasonic flaw detector.
Referring to fig. 1 to 5, the method for correcting the time base line of the a-type ultrasonic flaw detector based on the aid for quickly correcting the time base line of the a-type ultrasonic flaw detector of the utility model comprises the following steps:
firstly, an ultrasonic flaw detector is connected with an ultrasonic flaw detector connecting joint 6 of an A-type ultrasonic flaw detector time base rapid correction auxiliary device through a cable, an ultrasonic probe 11 is connected with a probe connecting joint 7 of the A-type ultrasonic flaw detector time base rapid correction auxiliary device through a cable, and a change-over switch 8 is shifted to a position where the ultrasonic flaw detector connecting joint 6 is communicated with a piezoelectric ceramic piece 2 so as to electrically connect the ultrasonic flaw detector with the piezoelectric ceramic piece 2; starting a switch of an ultrasonic flaw detector, wherein the ultrasonic flaw detector transmits electric pulses with specific frequency to excite a piezoelectric ceramic piece 2, the piezoelectric ceramic piece 2 transmits ultrasonic waves to a time delay block 3 through an inverse piezoelectric effect, the ultrasonic waves are reflected back to the piezoelectric ceramic piece 2 through a reflector plate 4, and the piezoelectric ceramic piece 2 generates electric pulse signals through a positive piezoelectric effect; the ultrasonic waves are reflected for many times in the time delay block, and the piezoelectric ceramic piece 2 generates a plurality of electric pulse signals with equal interval time, which are used as a 'time scale' and transmitted to the ultrasonic flaw detector for display; when the ultrasonic flaw detector receives echo pulse signals with equal interval time, time base correction can be started, when the initial wave is at a zero position, the sound path key of the ultrasonic flaw detector is utilized to expand or compress the pulse position, and the front edge of the first echo pulse is adjusted to a specified position so as to adjust the corresponding proportional relation between the time base and the detection distance of the ultrasonic flaw detector;
secondly, the change-over switch 8 is shifted to a position for conducting the ultrasonic flaw detector connecting joint 6 and the probe connecting joint 7, so that the ultrasonic probe 11 is electrically connected with the ultrasonic flaw detector; the ultrasonic flaw detector 11 is placed at the position of the corresponding detection distance of the detection surface of the miniature test block 12, the ultrasonic flaw detector is started, the ultrasonic flaw detector transmits an electric pulse signal with a specific frequency and receives an echo pulse signal of the ultrasonic probe 11, after the ultrasonic flaw detector receives the echo pulse, the front edge of the echo pulse is moved to the position of a scale corresponding to the specific proportion of the detection distance by using a horizontal displacement key of the ultrasonic flaw detector, so that the incident point of the ultrasonic probe 11 is the initial position of detection, namely, the detection distance of the material to be detected is corresponding to the scale of the ultrasonic flaw detector in the specific proportion, and the adjustment is finished.
The auxiliary device for quickly correcting the time base of the a-type ultrasonic flaw detector is used for correcting the time base of the double-inclined-probe ultrasonic flaw detector, and comprises the steps of firstly, when the ultrasonic flaw detector receives echo pulse signals with equal interval time, starting time base correction, expanding or compressing the pulse position by using a sound path key of the ultrasonic flaw detector when a starting wave is at a zero position, adjusting the front edge of a first echo pulse to a specified position, such as a position of 50 mm, and then adjusting the proportional relationship between the time base of the ultrasonic flaw detector and the distance of a detected material when the front edge of a second echo pulse is at a position of 100 mm; and secondly, placing the angle probe at the R50 mm detection distance position of the detection surface of the miniature test block 12 matched with the A-type ultrasonic flaw detector time base rapid correction auxiliary device, as shown in fig. 3, receiving the echo pulse of the R50 surface by the ultrasonic flaw detector, moving the front edge of the R50 pulse to the 50 mm scale position of the ultrasonic flaw detector by using a horizontal displacement key of the ultrasonic flaw detector, namely finishing the one-to-one correspondence of the detection distance and the scale of the ultrasonic flaw detector, and finishing the adjustment. The micro test block 12 in this embodiment can also be used in a straight probe ultrasonic flaw detector, and the use state is shown in fig. 4.
The working principle of the utility model is as follows:
when the change-over switch 8 is at the position for communicating the ultrasonic flaw detector with the piezoelectric ceramic piece 2, the piezoelectric ceramic piece 2 is excited by an electric pulse signal emitted by the ultrasonic flaw detector, after the piezoelectric ceramic piece 2 is excited by the electric pulse, the electric signal on the piezoelectric ceramic piece 2 is used as a starting signal, echo pulse signals with equal interval time are generated and used as a 'time scale', and the time synchronization of the pulse signal emitted by the ultrasonic flaw detector and the echo pulse signal of the piezoelectric ceramic piece 2 can be realized, so that the corresponding proportional relation between the time base line and the detection distance of the ultrasonic flaw detector can be adjusted through a sound path key when the initial wave is at a zero position without adding a probe.
When the change-over switch 8 is at the position for connecting the ultrasonic flaw detector with the ultrasonic probe 11, the micro test block 12 with a specific detection distance is utilized, the ultrasonic flaw detector transmits a pulse signal and receives an echo pulse, the front edge of the pulse is directly moved to the scale position corresponding to the detection distance of the micro test block 12 through the horizontal displacement key of the ultrasonic flaw detector, the error delay can be directly adjusted to be beyond the scale zero point, and the one-to-one correspondence between the detection distance of the material to be detected and the scale of the ultrasonic flaw detector is completed. When the scale needs to be adjusted to another scale, the scale may be adjusted to the scale after conversion.
Example 2
Referring to fig. 6, the present embodiment is different from embodiment 1 in that: the A-type ultrasonic flaw detector time baseline rapid correction auxiliary device comprises an ultrasonic flaw detector connecting joint 6 and a probe connecting joint 7, and is used for correcting the time baseline of a single-probe ultrasonic flaw detector. The piezoelectric ceramic piece 2 is made of piezoelectric ceramic materials for emitting transverse waves. The clutter elimination block 9 is made of damping materials, is formed by casting tungsten powder and is used for absorbing ultrasonic waves and attenuating loss.
Example 3
Referring to fig. 7 and 8, the present embodiment is different from embodiment 1 in that: the ultrasonic receiving and transmitting component comprises a transmitting end piezoelectric ceramic piece 21 and a receiving end piezoelectric ceramic piece 22 which are oppositely arranged at two ends of the time delay block 3. The transmitting end piezoelectric ceramic piece 21 is electrically connected with a transmitting end connector 61 of the ultrasonic flaw detector and is used for transmitting ultrasonic waves to the time delay block 3 when being excited by pulses. The receiving end piezoelectric ceramic piece 22 is electrically connected with the receiving end connector 62 of the ultrasonic flaw detector and is used for receiving the ultrasonic waves output by the time delay block 3. The back surfaces of the transmitting end piezoelectric ceramic piece 21 and the receiving end piezoelectric ceramic piece 22 are both provided with an acoustic damping block 5.
When the ultrasonic flaw detector works, the ultrasonic flaw detector transmits electric pulses with specific frequency to excite the piezoelectric ceramic piece 21 at the transmitting end, the piezoelectric ceramic piece 21 at the transmitting end transmits ultrasonic waves to the time delay block 3 through the inverse piezoelectric effect, the ultrasonic waves reach the piezoelectric ceramic piece 22 at the receiving end after being transmitted by the time delay block 3, and the piezoelectric ceramic piece 22 at the receiving end generates electric pulse signals through the positive piezoelectric effect; after the ultrasonic wave is transmitted for many times, the ultrasonic flaw detector receives echo pulse signals with equal interval time, and the echo pulse signals are used as a 'time scale'.
Example 4
Referring to fig. 9, the present embodiment is different from embodiment 1 in that: the piezoelectric ceramic piece 2 comprises two pieces, namely a transmitting end piezoelectric ceramic piece 21 and a receiving end piezoelectric ceramic piece 22 which are arranged at two ends of the time delay block 3 relative to the transmitting piece 3 and are respectively electrically connected with a transmitting end connector 61 and a receiving end connector 62 of the ultrasonic flaw detector through the matching circuit 10. The electrical wiring diagram of this example is the same as that of example 3.
When the ultrasonic flaw detector works, an electric pulse with specific frequency is transmitted by the ultrasonic flaw detector to excite the piezoelectric ceramic piece 21 at the transmitting end, the piezoelectric ceramic piece 21 at the transmitting end transmits ultrasonic waves to the time delay block 3 through the inverse piezoelectric effect, the ultrasonic waves are reflected back to the piezoelectric ceramic piece 22 at the receiving end through the reflector 3, and the piezoelectric ceramic piece 22 at the receiving end generates an electric pulse signal through the positive piezoelectric effect; after the ultrasonic wave is reflected for many times, the ultrasonic flaw detector receives echo pulse signals with equal interval time as a 'time scale'.
The above description is only about four specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (8)
- The A-type ultrasonic flaw detector time baseline rapid correction auxiliary device is characterized by comprising a shell, a time delay block, an ultrasonic receiving and transmitting assembly acoustic damping block and an ultrasonic flaw detector connecting joint; the ultrasonic receiving and transmitting component comprises a piezoelectric ceramic piece and a reflector plate, the piezoelectric ceramic piece and the reflector plate are oppositely arranged at two ends of the time delay block, the reflector plate is used for reflecting ultrasonic waves, and the piezoelectric ceramic piece is used for transmitting the ultrasonic waves to the time delay block and receiving the ultrasonic waves reflected by the reflector plate when being excited by pulses; or the ultrasonic receiving and transmitting component comprises two piezoelectric ceramic pieces which are oppositely arranged at two ends of the time delay block, one piezoelectric ceramic piece is used as a transmitting end for transmitting ultrasonic waves to the time delay block when being excited by pulses, and the other piezoelectric ceramic piece is used as a receiving end for receiving the ultrasonic waves output by the time delay block; the time delay block is used for transmitting ultrasonic waves to generate fixed time delay, the acoustic damping block is arranged on the back of the piezoelectric ceramic piece and used for eliminating back reflection of the piezoelectric ceramic piece, and the connecting joint of the ultrasonic flaw detector is used for connecting the ultrasonic flaw detector and is electrically connected with the piezoelectric ceramic piece.
- 2. The apparatus of claim 1, further comprising a probe connector and a switch, wherein the probe connector is used for connecting the ultrasonic probe and electrically connected to the ultrasonic detector connector, and the switch is used for controlling the ultrasonic detector connector to be conducted with one of the piezoelectric ceramic plate and the probe connector.
- 3. The type-A ultrasonic flaw detector time base line quick correction auxiliary device according to claim 1 or 2, characterized in that a plurality of micro test blocks are further provided, the micro test blocks of different materials are respectively used for flaw detection of a workpiece to be detected of the same material as the micro test blocks.
- 4. The type A ultrasonic flaw detector time base line fast correction auxiliary device as claimed in claim 1, wherein a clutter elimination block is provided to a side of the time delay block for eliminating unnecessary ultrasonic waves around the time delay block.
- 5. The type a ultrasonic flaw detector time base line fast correction auxiliary device of claim 1, wherein a matching circuit is electrically connected between the piezoelectric ceramic plate and the ultrasonic wave connection joint.
- 6. The type a ultrasonic flaw detector time base line quick correction auxiliary device according to claim 2, wherein the ultrasonic flaw detector connection terminal and the probe connection terminal are connected to the ultrasonic flaw detector and the ultrasonic probe by a cable, respectively.
- 7. The apparatus of claim 1, wherein the reflecting surface of the reflecting plate forms a smooth plane, and the reflecting plate and the time delay block are made of different materials.
- 8. The type a ultrasonic flaw detector time base line fast correction auxiliary device of claim 1, wherein the acoustic damping block is disposed around the back and side of the piezoelectric ceramic plate to narrow the piezoelectric ceramic plate pulse.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122623174.1U CN216285086U (en) | 2021-10-29 | 2021-10-29 | Time base line fast correction auxiliary device for A-type ultrasonic flaw detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122623174.1U CN216285086U (en) | 2021-10-29 | 2021-10-29 | Time base line fast correction auxiliary device for A-type ultrasonic flaw detector |
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| CN216285086U true CN216285086U (en) | 2022-04-12 |
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| CN202122623174.1U Active CN216285086U (en) | 2021-10-29 | 2021-10-29 | Time base line fast correction auxiliary device for A-type ultrasonic flaw detector |
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- 2021-10-29 CN CN202122623174.1U patent/CN216285086U/en active Active
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