CN102226784A - Ultrasonic probe - Google Patents
Ultrasonic probe Download PDFInfo
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- CN102226784A CN102226784A CN 201110090134 CN201110090134A CN102226784A CN 102226784 A CN102226784 A CN 102226784A CN 201110090134 CN201110090134 CN 201110090134 CN 201110090134 A CN201110090134 A CN 201110090134A CN 102226784 A CN102226784 A CN 102226784A
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- ultrasonic probe
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Abstract
The invention discloses an ultrasonic probe. The ultrasonic probe comprises a housing with an inner cavity, a chip arranged in the inner cavity of the housing, and a sound transparent piece which contacts directly with the chip and is fixedly arranged on the housing. The invention is characterized in that: the surface of the sound transparent piece is coated with at least one protective layer; the protective layer has enough strength and hardness to resist wear and deformation in use; and a sound impedance of the protective layer is greater than a sound impedance of the sound transparent piece, and is less than a sound impedance of workpiece needing to be detected. The ultrasonic probe has the advantages of good strength, wear resistance, impact resistance, long service life of a probe, and good detection effects due to improvements of acoustic characteristics of a probe.
Description
Technical field
The present invention relates to ultrasonic probe, relate in particular to a kind of ultrasonic probe that is used in the Non-Destructive Testing field.
Background technology
Ultrasound examination is one of big conventional sense method in five in the Non-Destructive Testing field, and it possesses advantages such as environmental pollution is little, has therefore obtained using widely on industrial nondestructive testing.
The parts that are used in the ultrasound examination produce the ultrasonic exciting signal and receive the ultrasound wave return signal are ultrasonic probe.Ultrasonic probe is of a great variety in the prior art, and purposes is different, but their basic system generally includes by wafer, diaphragm (or entrant sound piece) and the high frequency cable plug-in unit that is connected with instrument, support, shell etc.
Wherein, domestic and international at present the ultrasonic probe that uses based on piezoelectric effect, all be to adopt organic glass or polysulfones material to do voussoir, form the detection faces of probe, when such ultrasonic probe detected metal works, if when the detection faces of tested metal works is more coarse, the probe of this organic glass or polysulfones material detected just wearing and tearing easily of surface, the detection effect of influence probe shortens the life-span of popping one's head in.The automatic ultrasonic contact method that especially ought run into the tested workpiece of metal detects, if it is bigger to detect task amount, ultrasonic probe weares and teares just sooner, sometimes in order to reach good coupling effect, when the snap-in force of probe was big, probe also may be damaged in the coarse surface of tested workpiece.
Summary of the invention
The technical matters that desire of the present invention solves is to provide a kind of ultrasonic probe at existing above-mentioned technological deficiency in the prior art, and it is not only not easy to wear applicable to various measured workpieces, can also effectively improve the detection effect.
For solving the problems of the technologies described above, the ultrasonic probe among the present invention comprises shell, and this shell is provided with inner chamber; Wafer, it is installed in the described shell inner cavity; The entrant sound piece, it is fixedly mounted on the shell with wafer; The appearance of described entrant sound piece also is coated with layer protective layer at least; this at least layer protective layer have enough intensity and hardness with unlikely generation wearing and tearing and distortion in the process of using, and this at least the specific acoustic impedance of layer protective layer greater than the entrant sound piece less than measured workpiece.Wherein, described entrant sound piece material therefor is organic glass or polysulfone resin, and described protective seam institute materials used is stainless steel or aluminium, and the thickness of described protective seam is 0.8mm.
In another embodiment, described probe comprises the stacked two-layer above protective seam that is installed together, and the specific acoustic impedance of described two-layer above protective seam is and increases progressively relation.
After adopting said structure, this ultrasound examination probe not only has better intensity, wearing quality and impact resistance, prolonging the serviceable life of probe, and has better Effect on Detecting because having improved the acoustic feature of probe.
Description of drawings
Fig. 1 is the structural representation of ultrasonic probe of the present invention.
Embodiment
Below with reference to accompanying drawing the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subjected to the restriction of embodiment.
As shown in Figure 1, the ultrasonic probe in the present embodiment comprises shell 1, and it is provided with inner chamber.This shell can be made with any solid material commonly used, as long as it has certain intensity and hardness.Wafer 2 is installed in the inner chamber of described shell 1, and this wafer can be selected any piezoelectric chip as required, such as ceramic wafers or quartz wafer etc.This ultrasonic probe also comprises entrant sound piece 3, and it is fixedly mounted on the shell 1 with wafer 2.Selecting for use of entrant sound piece needs the factor of consideration a lot, and it had both needed to have good acoustical behavior, preferably also processing easily.The entrant sound piece forms material can be organic glass or polysulfone resin.
In order to improve the emission efficiency of wafer 1, the thickness of wafer 1 should guarantee to work under resonance state.But resonance cycle vibration interference long or wafer 1 back side can cause all that pulse is wide, the blind area increases.For this reason, can fill the damping material (not shown) that absorbs this noise like energy, make and disturb acoustic energy to dissipate rapidly, reduce the mixed and disorderly signal of probe itself at wafer 1 back side.At present, Chang Yong damping material is epoxy resin and tungsten powder.
In ultrasonic probe shown in Figure 1, the appearance of entrant sound piece 3 also is coated with layer protective layer 4.In the use of ultrasonic probe, this protective seam 4 contacts with protection entrant sound piece 3 with the measured workpiece surface.Simultaneously, protective seam 4 itself has enough intensity and hardness is worn and torn and distortion with unlikely generation in the process of using, thereby increases overall intensity, wearing quality and the impact resistance of ultrasonic probe, to prolong the serviceable life of probe.
A key character of the probe among the described embodiment of Fig. 1 is that the specific acoustic impedance of described protective seam 4 is between wafer 2 and tested workpiece.Such probe has just produced the beyond thought technique effect of another one, and promptly protective seam 4 has also further improved the efficiency of transmission of sound wave simultaneously, and then has improved the detection effect of this probe.When the ultrasonic probe that uses prior art detected, the wafer in the probe constituted the ground floor medium, and tested workpiece constitutes second kind of medium.Because the material at the tested workpiece of industrial circle in most of the cases all is a metal material, widely different with the specific acoustic impedance of piezoelectric chip, at this moment the transmission coefficient of sound wave is very little, and reflection coefficient is very big, can cause most of sound wave to be reflected, have only the sub-fraction acoustic wave transmission to detect, had a strong impact on the detection effect to tested workpiece inside.At this moment, in fact entrant sound piece between wafer and tested workpiece has constituted a matching layer, if the specific acoustic impedance of entrant sound piece between wafer and tested workpiece, the characteristic impedance of sound wave gradually changes to tested workpiece from wafer, thereby can increase the transmission of sound wave, improve and detect effect.But when ultrasonic probe detected when being the bigger metal works of specific acoustic impedance, the matching effect of entrant sound piece is very limited.Ultrasonic probe of the present invention; on the basis of original entrant sound piece, increased protective seam; when the specific acoustic impedance of protective seam is between entrant sound piece and tested workpiece; the acoustic impedance coupling is by original entrant sound piece individual layer coupling; two layers of coupling have been risen to; further improve the efficiency of transmission of sound wave, and then improved the detection effect of ultrasonic probe.
At the very big measured workpiece of specific acoustic impedance, can also continue to increase the number of plies of protective seam, and the specific acoustic impedance of described multi-protective layer is and increases progressively relation.Thereby further improve protective effect and this improvement probe acoustic matching to the entrant sound piece.Described multi-protective layer can also be revised the distortion that the emission sound wave takes place by entrant sound piece, protective seam and tested workpiece the time, thereby further improves detection accuracy.
Although above reference example also sees that accompanying drawing describes the present invention, the present invention is not limited to above-mentioned concrete feature and design.To those skilled in the art, do not need in the above description with the size and dimension of each parts of numeric representation, these can come to determine as the case may be.Except given example, under the prerequisite that does not exceed the scope of the invention, those skilled in the art read above describe can make change or be equal to the scope that replacement all should belong to the present invention.
Claims (6)
1. ultrasonic probe, it comprises
Shell, it is provided with inner chamber;
Wafer, it is installed in the described shell inner cavity;
The entrant sound piece, it is fixedly mounted on the shell with wafer;
It is characterized in that; the appearance of described entrant sound piece also is coated with layer protective layer at least; this protective seam has enough intensity and hardness with unlikely generation wearing and tearing and distortion in the process of using, and this at least the specific acoustic impedance of layer protective layer greater than the entrant sound piece less than measured workpiece.
2. ultrasonic probe according to claim 1 is characterized in that, described entrant sound piece material therefor is organic glass or polysulfone resin.
3. ultrasonic probe according to claim 1 is characterized in that, described layer protective layer at least institute materials used is stainless steel or aluminium.
4. ultrasonic probe according to claim 3 is characterized in that, the thickness of described layer protective layer at least is 0.8mm.
5. ultrasonic probe according to claim 1 is characterized in that, described probe comprises the stacked two-layer above protective seam that is installed together, and the specific acoustic impedance of described two-layer above protective seam is and increases progressively relation.
6. ultrasonic probe according to claim 5 is characterized in that, described two-layer above protective seam uses different formation materials respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110090134 CN102226784A (en) | 2011-04-11 | 2011-04-11 | Ultrasonic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110090134 CN102226784A (en) | 2011-04-11 | 2011-04-11 | Ultrasonic probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102226784A true CN102226784A (en) | 2011-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110090134 Pending CN102226784A (en) | 2011-04-11 | 2011-04-11 | Ultrasonic probe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830179A (en) * | 2012-08-09 | 2012-12-19 | 江苏三合声源超声波科技有限公司 | Ultrasonic probe |
| CN102841146A (en) * | 2012-08-23 | 2012-12-26 | 中国神华能源股份有限公司 | Transverse-wave fault detecting angle probe and transverse-wave fault detecting method |
| CN104458914A (en) * | 2014-12-08 | 2015-03-25 | 大连理工大学 | Quick detecting device and quick detecting method of fidelity natural gas hydrate rock core |
| CN110753841A (en) * | 2017-06-20 | 2020-02-04 | 阿克森斯公司 | Holding device for acoustic emitters in a sound spectrum system |
| CN111220708A (en) * | 2019-12-05 | 2020-06-02 | 中国航空工业集团公司济南特种结构研究所 | Ultrasonic C scanning detection method for foam sandwich structure radar cover |
| CN113624849A (en) * | 2021-08-11 | 2021-11-09 | 广州多浦乐电子科技股份有限公司 | Delay block capable of optimizing natural wave and ultrasonic probe |
| CN113624849B (en) * | 2021-08-11 | 2024-04-26 | 广州多浦乐电子科技股份有限公司 | Delay block capable of optimizing inherent wave and ultrasonic probe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2144306Y (en) * | 1992-12-10 | 1993-10-20 | 北京电力科学研究所 | Magnetic ultrasonic probe for flaw detection by contact method |
| CN2648445Y (en) * | 2003-10-17 | 2004-10-13 | 汕头超声仪器研究所 | Horizontal wave probe for supersonic cractdetection |
| JP2005198261A (en) * | 2003-12-09 | 2005-07-21 | Toshiba Corp | Ultrasonic probe and ultrasonic diagnostic device |
| CN201697899U (en) * | 2010-04-10 | 2011-01-05 | 汕头市超声仪器研究所有限公司 | Industrial phased array probe with wear-resisting protection layer |
-
2011
- 2011-04-11 CN CN 201110090134 patent/CN102226784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2144306Y (en) * | 1992-12-10 | 1993-10-20 | 北京电力科学研究所 | Magnetic ultrasonic probe for flaw detection by contact method |
| CN2648445Y (en) * | 2003-10-17 | 2004-10-13 | 汕头超声仪器研究所 | Horizontal wave probe for supersonic cractdetection |
| JP2005198261A (en) * | 2003-12-09 | 2005-07-21 | Toshiba Corp | Ultrasonic probe and ultrasonic diagnostic device |
| CN201697899U (en) * | 2010-04-10 | 2011-01-05 | 汕头市超声仪器研究所有限公司 | Industrial phased array probe with wear-resisting protection layer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830179A (en) * | 2012-08-09 | 2012-12-19 | 江苏三合声源超声波科技有限公司 | Ultrasonic probe |
| CN102841146A (en) * | 2012-08-23 | 2012-12-26 | 中国神华能源股份有限公司 | Transverse-wave fault detecting angle probe and transverse-wave fault detecting method |
| CN104458914A (en) * | 2014-12-08 | 2015-03-25 | 大连理工大学 | Quick detecting device and quick detecting method of fidelity natural gas hydrate rock core |
| CN110753841A (en) * | 2017-06-20 | 2020-02-04 | 阿克森斯公司 | Holding device for acoustic emitters in a sound spectrum system |
| CN111220708A (en) * | 2019-12-05 | 2020-06-02 | 中国航空工业集团公司济南特种结构研究所 | Ultrasonic C scanning detection method for foam sandwich structure radar cover |
| CN113624849A (en) * | 2021-08-11 | 2021-11-09 | 广州多浦乐电子科技股份有限公司 | Delay block capable of optimizing natural wave and ultrasonic probe |
| CN113624849B (en) * | 2021-08-11 | 2024-04-26 | 广州多浦乐电子科技股份有限公司 | Delay block capable of optimizing inherent wave and ultrasonic probe |
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Application publication date: 20111026 |