CN207964729U - The device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body - Google Patents
The device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body Download PDFInfo
- Publication number
- CN207964729U CN207964729U CN201820108306.2U CN201820108306U CN207964729U CN 207964729 U CN207964729 U CN 207964729U CN 201820108306 U CN201820108306 U CN 201820108306U CN 207964729 U CN207964729 U CN 207964729U
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- Prior art keywords
- axle
- axle body
- array
- longitudinal wave
- flaw
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Abstract
A kind of device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body, by ring piezoelectric chip（2）It is assembled in phased array probe（1）In the middle and it is set to axle end face centre bore（9）Edge and threaded hole（10）Edge between planar annular（8）It is interior, phased array probe（1）In, piezoelectric chip is divided into 16 array elements, and mating with it has more conductor coaxial cables leads and the coat of metal, is additionally provided with matching layer and backing and is used for acoustic impedance match and sound absorption, and be installed on barrel housing it.The utility model has expansibility to axle body scanning, longitudinal wave deflection angle can easily be increased, multiple positions such as sectoring and array sweeping can not only make ultrasonic Main beam cover the axle body of any model axle and can also cover entire wheel seat, dust guard seat and the diameter of axle.
Description
Technical field
The utility model is related to a kind of devices that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body.
Background technology
Ultrasound examination to train axle body regio defect, traditional method are to use zero degree longitudinal wave normal probe defectoscopy,
This method is detected the big crackle of axle body based on the weak acoustic pressure of acoustic beam angle of flare, because axle end face is easy to make there are threaded hole
At flaw detection blind area, in addition angle of flare echo is more and mixed and disorderly, and defect that instrument shows that it is difficult to distinguish the true from the false sometimes has to artificially inhibit certain
A little echoes also easily cause leakage to visit or report by mistake wound in this way.Although can be overcome using small angle longitudinal wave defectoscopy above-mentioned certain scarce
It falls into, since some position that the Main beam center line of single wafer can only be directed at axle body is immutable, only with low-angle
Main beam replaces the angle of flare of normal probe, original state can be made to be improved.But entire axle body can not be made to obtain main sound
Beam center is concerned about, so there is also considerable room for improvement.Phased-array technique is current detection technique state-of-the-art in the world
One of, it has been widely used in the high-end field of detecting of military and civilian.
Invention content
The purpose of this utility model is to provide intuitive, accurate, efficient and leaks spy rate and a kind of low ultrasound phase-control of False Rate
The device that battle array small angle longitudinal wave detects a flaw to axle body.
The purpose of this utility model is realized by following technical scheme：Ultrasonic phase array small angle longitudinal wave detects a flaw to axle body
Method, it is characterised in that：With more array element piezoelectric chips（2）The phased array probe of core component（1）, it is positioned in axle
On heart hole and axle end face, and the position of more array element chips is made to be between axle end face centre bore edge and threaded hole edge
Planar annular（8）Interior, the phased array defectoscope to match forms electronic deflection to array element signals into line delay, utilizes the phase of wave
Position controllably influences wave surface, and sectoring and array sweeping can reach superposition enhancing, deep focus and antiphase and offset
Effect.Main beam（7）The axle body of whole axle can be covered（6）.
The method that ultrasonic phase array small angle longitudinal wave described in the utility model detects a flaw to axle body, to axle body scanning can
Expansion so that the phased array compressional wave refraction angle of axle flaw detection can be since lower limit zero angle to upper limit critical angle.
The utility model also provides a kind of device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body, and annular is pressed
Electric chip（2）It is assembled in phased array probe（1）In the middle and it is set to axle end face centre bore（9）Edge and threaded hole（10）'s
Planar annular between edge（8）It is interior, phased array probe（1）In, piezoelectric chip is divided into 16 array elements, and mating with it has lead more
Body coaxial cable lead and the coat of metal, are additionally provided with matching layer and backing is used for acoustic impedance match and sound absorption, and are installed on set
Among cylinder shell.
The device that a kind of ultrasonic phase array small angle longitudinal wave of the utility model detects a flaw to axle body, the chip of probe have
How much array element is equivalent to how many conventional wafer, enhanced by the superposition same-phase to its array element signals compensation of delay, wave,
The means such as antiphase payment, a probe can be scanned multiple targets deflection and focusing, and electron system provides accurate
Image-forming information, not only intuitive increase, recall rate also greatly improves, and rate of false alarm substantially reduces, especially, due to only at axle end
Face can be detected holoaxial, this provides great possibility to on-line checking.It is annual it is cost-effective will be with billions of members
Meter.
Description of the drawings
Fig. 1 is the axle flaw detection schematic diagram of the utility model.
Fig. 2 is axle end face structural schematic diagram.
Fig. 3 is the one-dimensional linear array of ultrasonic phase array chip element.
Fig. 4 is ultrasonic phase array chip element two-dimensional rectangle array.
Fig. 5 is ultrasonic phase array chip element two-dimensional annular array.
Fig. 6 is the one-dimensional annular array of ultrasonic phase array chip element.
Fig. 7 is the wavefront operation principle schematic diagram of delay deflection.
Fig. 8 is phased array probe sectoring schematic diagram.
Fig. 9 a are that the probe electronics of computer system control scan schematic diagram.
Fig. 9 b are the probe sectoring schematic diagram of computer system control.
Fig. 9 c are that the depth of probe of computer system control focuses scanning schematic diagram.
Figure 10 is the effect diagram that the flaw detection object to existing defects is scanned.
Figure 11 is phased array probe internal structure schematic diagram.
Figure 12 is relevant portion fundamental diagram in instrument and equipment.
1. phased array probe, 2. annular array chips, 3. diameters of axle, 4. dust guard seats, 5. wheel seats, 6. axle bodies, 7. phased arrays
Scan Main beam, 8. planar annulars, 9. centre bores, 10. threaded holes.
Specific implementation mode
With reference to the accompanying drawings, the method and device that the utility model ultrasonic phase array small angle longitudinal wave detects a flaw to axle body, will
Annular 16 array element piezoelectric chips（2）It is assembled in phased array probe（1）In the middle and it is positioned at axle end face centre bore（9）Edge with
Threaded hole（10）Edge between planar annular（8）It is interior.Fault detection system makes the set of each array element signals of chip that electronics occur
Deflection, when refraction angle is from zero degree to 20 degree, ultrasonic beam can cover the axle body of entire axle（6）, without as before
Method is like that only so that Main beam center is confined to some position such as half axle body position or a quarter axle body position etc..
By the cell array delay wavefront of computer control, phased array probe forms sectoring and is formed by Fig. 9 a, Fig. 9 b, Fig. 9 c
Array sweeping so that Main beam center reaches axle body each test position, and providing accurate axle body with electron system lacks
It falls into image-forming information and obtains defect imaging design sketch on flaw detection object.Deflection angle can be additionally increased, the main sound of longitudinal wave is made
Beam covers wheel seat（5）Dust guard seat（4）And the diameter of axle（3）.
The device that the utility model ultrasonic phase array small angle longitudinal wave detects a flaw to axle body is specifically, by ring piezoelectric crystalline substance
Piece（2）It is assembled in phased array probe（1）In the middle and it is positioned at axle end face centre bore（9）Edge and threaded hole（10）Edge
Between planar annular（8）It is interior, phased array probe（1）In, piezoelectric chip is divided into 16 array elements, and mating with it has more conductors same
Shaft cable lead and the coat of metal, also matching layer and backing for acoustic impedance match and sound absorption and be installed on barrel housing it
Middle to form basic complete probe, fault detection system makes the set of each array element signals of chip that electronic deflection occur, when refraction angle from
When zero degree is to 20 degree, ultrasonic beam can cover the axle body of entire axle（6）, without only making the method as before
Main beam center is confined to some position such as half axle body position or a quarter axle body position etc..The crystalline substance controlled by computer
Chip arrays delay wavefront, the array sweeping that phased array probe forms sectoring and formed by Fig. 9 a, Fig. 9 b, Fig. 9 c so that
Each test position of Main beam center arrival axle body.Mating phased array defectoscope（Figure 12）By the program woven to chip
Each array element provides electric pulse and emits signal, and receives the echo-signal of reflector, is handled each signal by computer.Most
Eventually, accurate axle body defect information of acoustic wave is converted into electric signal to obtain defect imaging design sketch on flaw detection object.Additionally
Deflection angle can be increased, longitudinal wave Main beam is made to cover wheel seat（5）Dust guard seat（4）And the diameter of axle（3）.
Claims (1)
1. the device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body, it is characterised in that：By ring piezoelectric chip（2）Group
Mounted in phased array probe（1）In the middle and it is set to axle end face centre bore（9）Edge and threaded hole（10）Edge between
Planar annular（8）It is interior, phased array probe（1）In, piezoelectric chip is divided into 16 array elements, and mating with it has more conductor coaxial cables
Lead and the coat of metal, are additionally provided with matching layer and backing is used for acoustic impedance match and sound absorption, and are installed among barrel housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820108306.2U CN207964729U (en) | 2018-01-23 | 2018-01-23 | The device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820108306.2U CN207964729U (en) | 2018-01-23 | 2018-01-23 | The device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207964729U true CN207964729U (en) | 2018-10-12 |
Family
ID=63734621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820108306.2U Expired - Fee Related CN207964729U (en) | 2018-01-23 | 2018-01-23 | The device that ultrasonic phase array small angle longitudinal wave detects a flaw to axle body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207964729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441780A (en) * | 2019-08-21 | 2019-11-12 | 中国海洋大学 | A kind of ultrasonic phase array relevance imaging method |
-
2018
- 2018-01-23 CN CN201820108306.2U patent/CN207964729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441780A (en) * | 2019-08-21 | 2019-11-12 | 中国海洋大学 | A kind of ultrasonic phase array relevance imaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20220123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |