CN209400693U - A kind of ultrasound examination distance gain size curve automatic calibration device - Google Patents
A kind of ultrasound examination distance gain size curve automatic calibration device Download PDFInfo
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- CN209400693U CN209400693U CN201822165718.2U CN201822165718U CN209400693U CN 209400693 U CN209400693 U CN 209400693U CN 201822165718 U CN201822165718 U CN 201822165718U CN 209400693 U CN209400693 U CN 209400693U
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Abstract
The utility model belongs to Ultrasonic Nondestructive technical field, and in particular to a kind of ultrasound examination distance gain size curve automatic calibration device.X-axis transmission shaft and Y-axis transmission shaft are fixed on two fixed frames after being coupled, and two fixed frames are fixed on two end side surfaces of calibration test block, and fixed frame can clamp the calibration test block of different in width；Flexible hold-down mechanism includes cylinder, guide rail, pressure sensor and clamper crotch, and one end of cylinder and guide rail is fixedly connected with clamper crotch, and the other end of cylinder and guide rail is fixed on X-axis transmission shaft；Pressure sensor is fixedly installed among cylinder and clamper crotch；Ultrasonic probe is mounted on clamper crotch, and is fitted tightly in calibration test block in the presence of cylinder；Air compressor machine is connect with cylinder；Supersonic detector is connect with ultrasonic probe, while being connect with ultrasonic signal processing unit；General controls driver and X-axis transmission shaft and Y-axis are driven axis connection.The utility model meets detection calibration demand.
Description
Technical field
The utility model belongs to Ultrasonic Nondestructive technical field, and in particular to a kind of ultrasound examination is bent apart from wave amplitude
Line automatic calibration device.
Background technique
Reactor pressure vessel is that one of core and crucial component, integrality pacify core the most in nuclear power unit
It is vital entirely.With the growth of nuclear power station runing time, the metallicity of metal material and weld seam can be gradually decreased, gold
Belonging to discontinuity can also generate, so regulation mandatory requirement periodically carries out ultrasound examination to reactor pressure vessel, with timely
It was found that the defect risk in weld seam, handles it as early as possible, thus the safety of maintenance and guarantee nuclear facilities.
It is execution nuclear reactor pressure container and other that the calibration of ultrasonic probe distance-amplitude curve is carried out in calibration test block
The committed step of nuclear component ultrasound detection, and be exactly that sensitivity is worked as to one of the judgment criteria of defect record threshold value in weld seam
Amount, therefore the distance in calibration test block-amplitude curve calibration accuracy and repeatability are required very high.
The calibration of calibration test block ultrasonic probe distance-amplitude curve is often hand-manipulated by personnel at this stage, but due to not
Biconditional operation personnel often result in different personnel's calibration to probe normal pressure, probe Main beam and reflector deflection angle difference etc.
There are deviations for the sensitivity of same reflection body.Therefore, 2~3 people are generally required in implementation procedure repeatedly to check calibration result,
With ensure distance-amplitude curve calibration accuracy and repeatability, but so virtually considerably increase manpower and time at
This.
Therefore it develops and a kind of operates convenient, accuracy and the high ultrasound examination distance-amplitude curve of repeatability is automatic
Scaling method seem very it is necessary to.
Summary of the invention
The utility model is directed to ultrasound examination distance gain size curve calibration request, develops a kind of convenient, accuracy of operation
The high reactor pressure vessel ultrasound examination distance gain size curve automatic calibration device with repeatability, to meet detection calibration
Demand.
In order to achieve the above objectives, technical solution adopted in the utility model are as follows:
A kind of ultrasound examination distance gain size curve automatic calibration device, X-axis transmission shaft and Y-axis transmission shaft are whole after being coupled
It is fixed on two fixed frames, two fixed frames are separately fixed at two end side surfaces of calibration test block, and fixed frame can be clamped
The calibration test block of different in width；Flexible hold-down mechanism includes cylinder, guide rail, pressure sensor and clamper crotch, cylinder and is led
One end of rail is fixedly connected with clamper crotch, and the other end of cylinder and guide rail is fixed on X-axis transmission shaft；Pressure sensor is solid
Dingan County is loaded among cylinder and clamper crotch；Ultrasonic probe is mounted on clamper crotch, and in the presence of cylinder
It is fitted tightly in calibration test block；Air compressor machine is connect with cylinder；Supersonic detector is connect with ultrasonic probe, while being believed with ultrasound
The connection of number processing unit；General controls driver and X-axis transmission shaft and Y-axis are driven axis connection.
The X-axis transmission shaft and Y-axis transmission shaft is fixed on after being coupled by pinboard entirely through pin and screw
Determine in rack.
The X-axis transmission shaft and Y-axis transmission shaft is stainless steel material.
The fixed frame is aluminum alloy material.
The fixed frame is separately fixed at two end side surfaces of calibration test block by supporting block with screw.
The ultrasonic probe is mounted on clamper crotch by framework.
The air compressor machine is connect by tracheae with cylinder.
The supersonic detector is connect by signal-transmitting cable with ultrasonic probe, while being believed by cable and ultrasound
The connection of number processing unit.
The general controls driver is driven axis connection by motor lines and X-axis transmission shaft and Y-axis.
It is had the beneficial effect that acquired by the utility model
The utility model can build the air pressure of 0-6bar, the contact pressure 5 of ultrasonic probe and test block surface when guaranteeing to stretch out
~40N is continuously adjustable, and the air pressure of cylinder keeps stablizing during test；
The utility model pilot system is firm, and play≤3mm of equipment vertical direction, whole device are small in operation
In 20kg, equipment installs number less than 2 people, and the set-up time was less than 5 minutes；
Above the test block in moving process, clamping ultrasonic probe in two directions moves utility model device transmission shaft
It is dynamic, it realizes and is popping one's head in and the ultrasonic probe Sensitivity Calibration under test block surface constant-force contact；
The utility model ultrasonic wave effective reflector automatic identification in calibration test block gamut scanning covering data, according to
Algorithm extracts the position of demand reflector, the information such as gain compensation value, and result is stored in ultrasound parameter file, carries out ultrasonic wave
Detecting distance-amplitude curve calibration.
Detailed description of the invention
Fig. 1 is reference block component and scanning system diagram；
Fig. 2 is ultrasound examination distance-amplitude curve automatic Calibration connection figure；
Fig. 3 is ultrasound examination distance-amplitude curve automatic Calibration flow chart；
In figure: 1, fixed frame；2, X-axis transmission shaft；3, Y-axis transmission shaft；4, cylinder；5, guide rail；6, pressure sensor；7,
Clamper crotch；8, ultrasonic probe；9, test block is demarcated；10, air compressor machine；11, supersonic detector；12, ultrasonic signal processing list
Member；13, general controls driver.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, ultrasound examination distance gain size curve automatic calibration device described in the utility model is as follows:
Scanning equipment includes fixed frame 1, X-axis transmission shaft 2 and Y-axis transmission shaft 3.Wherein, fixed frame 1 is whole system
Installation foundation, X-axis transmission shaft 2 and Y-axis transmission shaft 3 entirely through pin and screw are fixed on fixation after being coupled by pinboard
In rack 1, X-axis transmission shaft 2 and Y-axis transmission shaft 3 are stainless steel material, and fixed frame 1 is aluminum alloy material.Fixed frame 1
It is divided into two, is separately fixed at two end side surfaces of calibration test block 9 with screw by supporting block.Fixed frame 1 can clamp different width
The stroke of the calibration test block 9 of degree, X-axis transmission shaft 2 and Y-axis transmission shaft 3 is sufficiently large, can satisfy different length and width calibration examination
The range demands of block 9.Flexible hold-down mechanism includes cylinder 4, guide rail 5, pressure sensor 6 and clamper crotch 7.It cylinder 4 and leads
One end of rail 5 is fixedly connected with clamper crotch 7, and the other end of cylinder 4 and guide rail 5 is fixed on X-axis transmission shaft 2；Pressure passes
Sensor 6 is fixedly installed among cylinder 4 and clamper crotch 7.Ultrasonic probe 8 is mounted on clamper crotch 7 by framework,
And it is fitted tightly under the action of cylinder 4 in calibration test block 9.Air compressor machine 10 is connect by tracheae with cylinder 4, and supply compression is empty
Gas；Supersonic detector 11 is connect by signal-transmitting cable with ultrasonic probe 8, while passing through cable and ultrasonic signal processing list
Member 12 connects；General controls driver 13 is connect by motor lines with X-axis transmission shaft 2 and Y-axis transmission shaft 3, and driving signal is carried out
Transmission.
As shown in figure 3, ultrasound examination distance gain size curve automatic calibration method described in the utility model is as follows:
(1) X-axis transmission shaft 2, Y-axis transmission shaft 3 are fixed in calibration test block 9 by fixed frame 1；
(2) ultrasonic probe 8 is mounted on clamper crotch 7 by framework, opens air compressor machine 10 and supplies compressed air,
Ultrasonic probe 8 is fitted tightly over calibration 9 surface of test block under the action of cylinder 4, adjusts 10 air pressure of air compressor machine, until pressure sensor
6 display probe normal pressures are designated value；
(3) general controls driver 13 issues control instruction driving X-axis transmission shaft 2 and Y-axis transmission shaft 3 drives flexible compress
Mechanism and ultrasonic probe 8 make grid motion on calibration 9 surface of test block, and supersonic detector 11 issues electric pulse letter while movement
Number excitation and receives original echoed signals at ultrasonic probe 8；
(4) echo-signal received is carried out real-time display and storage, grid scanning knot by ultrasonic signal processing unit 12
It is anti-in ultrasound echo signal data according to 8 type of ultrasonic probe, calibration 9 drawing of test block and its reflector coordinate information after beam
Beam depth and maximum amplitude point is laterally obtained in ± 10% range, complete the reflector for needing to demarcate and extract, and to extracting
Reflector position and echo amplitude be read out, software TGC calibration information column according to following rules insert reflector information
{ depth information is the reflector depth obtained, gain compensation value are as follows: reference gain+20*log (80/ echo amplitude) }.
(5) step 3 is repeated；
(6) ultrasonic signal processing unit 12 handles data, judge all Calibration of reflectors echo amplitudes whether
In 80 ± 5% wave-height ranges all over the screen；
(7) if there is reflector echo amplitude exceeds 80 ± 5% wave-height ranges all over the screen, then repeatedly step 5 and 6, until institute
There is reflector echo amplitude in 80 ± 5% wave-height ranges all over the screen；
(8) TGC (distance-amplitude curve) calibration of the ultrasonic probe terminates；
(9) next ultrasonic probe 8 is replaced, by executing step 2, until the calibration of all probes is completed；
(10) ultrasound examination distance-amplitude curve automatic Calibration terminates.
Claims (9)
1. a kind of ultrasound examination distance gain size curve automatic calibration device, it is characterised in that: X-axis transmission shaft and Y-axis transmission shaft
It is integrally attached to after connection on two fixed frames, two fixed frames are separately fixed at two end side surfaces of calibration test block, fixed
Rack can clamp the calibration test block of different in width；Flexible hold-down mechanism includes cylinder, guide rail, pressure sensor and clamper fork
One end of frame, cylinder and guide rail is fixedly connected with clamper crotch, and the other end of cylinder and guide rail is fixed on X-axis transmission shaft；
Pressure sensor is fixedly installed among cylinder and clamper crotch；Ultrasonic probe is mounted on clamper crotch, and
It is fitted tightly under the action of cylinder in calibration test block；Air compressor machine is connect with cylinder；Supersonic detector is connect with ultrasonic probe,
It is connect simultaneously with ultrasonic signal processing unit；General controls driver and X-axis transmission shaft and Y-axis are driven axis connection.
2. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
X-axis transmission shaft and Y-axis transmission shaft are fixed on fixed frame after being coupled by pinboard entirely through pin and screw.
3. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
X-axis transmission shaft and Y-axis transmission shaft are stainless steel material.
4. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
Fixed frame is aluminum alloy material.
5. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
Fixed frame is separately fixed at two end side surfaces of calibration test block by supporting block with screw.
6. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
Ultrasonic probe is mounted on clamper crotch by framework.
7. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
Air compressor machine is connect by tracheae with cylinder.
8. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
Supersonic detector is connect by signal-transmitting cable with ultrasonic probe, while being connected by cable and ultrasonic signal processing unit
It connects.
9. ultrasound examination distance gain size curve automatic calibration device according to claim 1, it is characterised in that: described
General controls driver is driven axis connection by motor lines and X-axis transmission shaft and Y-axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822165718.2U CN209400693U (en) | 2018-12-21 | 2018-12-21 | A kind of ultrasound examination distance gain size curve automatic calibration device |
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| CN201822165718.2U CN209400693U (en) | 2018-12-21 | 2018-12-21 | A kind of ultrasound examination distance gain size curve automatic calibration device |
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| CN209400693U true CN209400693U (en) | 2019-09-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541574A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | A kind of ultrasound examination distance gain size curve automatic calibration device and method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541574A (en) * | 2018-12-21 | 2019-03-29 | 核动力运行研究所 | A kind of ultrasound examination distance gain size curve automatic calibration device and method |
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