CN207703798U - A kind of ultrasonic probe for eliminating resonance - Google Patents
A kind of ultrasonic probe for eliminating resonance Download PDFInfo
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- CN207703798U CN207703798U CN201721782649.9U CN201721782649U CN207703798U CN 207703798 U CN207703798 U CN 207703798U CN 201721782649 U CN201721782649 U CN 201721782649U CN 207703798 U CN207703798 U CN 207703798U
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- resonance
- ultrasonic probe
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Abstract
The utility model discloses a kind of ultrasonic probes for eliminating resonance, include the core in mask；Back structure is located in core and embedding is formed in above piezoelectric ceramics；Coaxial cable passes through the reserved cable-through hole encapsulation of mask to be fixed on inside core, and core wire sequentially passes through mask, the upper cover of core, back structure from outside to inside, is connected to the anode of piezoelectric ceramics.The utility model can eliminate resonance in time, enhance resolution capability of the piezoelectric ceramics for echo, and can eliminate interference of the clutter for measurement, improve the accuracy of probe measurement.
Description
Technical field
The utility model belongs to technical field of ultrasonic measurement, is related to a kind of ultrasonic probe for eliminating resonance.
Background technology
Existing ultrasonic probe utilizes the piezoelectric effect of piezoelectric ceramics more, is carried out using piezoelectric ceramics excitation ultrasound wave
Relevant measurement work is powered high frequency voltage being converted into high-frequency mechanical vibration using inverse piezoelectric effect, generates ultrasonic wave；Again
The ultrasonic activation received electric signal is transformed to using direct piezoelectric effect to measure.Piezoelectric ceramics is issued in pulse excitation
Ultrasonic wave is penetrated, transmission ultrasonic wave enters tank skin and measures, and is monitored into row distance according to the echo that ultrasonic measurement is arrived, but one
As in the case of, ultrasonic wave enter tank skin when, due to the transmission direction of ultrasonic wave and uneven, the out-of-flatness of tank skin, can make
At the reflection and scattering of ultrasonic wave, effective ultrasonic wave is not only weakened, while bigger interference is caused to echometric measurement.
Piezoelectric ceramics generates vibration under high-voltage pulse excitation, due to that can't be eliminated in the inertial oscillation short time, postpones
Vibration can influence the reception popped one's head in for echo-signal, weaken resolution capability of the piezoelectric ceramics for echo-signal, can make
At bigger measurement error.
Invention content
The utility model intends to solve the technical problem by providing a kind of ultrasonic probes for eliminating resonance, can disappear in time
Except resonance, enhances resolution capability of the piezoelectric ceramics for echo, and interference of the clutter for measurement can be eliminated, improve probe
The accuracy of measurement.
The utility model is to be achieved through the following technical solutions：
A kind of ultrasonic probe for eliminating resonance includes the core in mask；Back structure is located in core
And embedding is formed in above piezoelectric ceramics；Coaxial cable passes through the reserved cable-through hole encapsulation of mask to be fixed on inside core, core wire
Mask, the upper cover of core, back structure are sequentially passed through from outside to inside, are connected to the anode of piezoelectric ceramics.
The diaphragm gluing parallel with core end face is labelled to the lower section of piezoelectric ceramics.
It is provided with magnet ring and clamping ring on the outside of the core end face, mask is fixed on clamping ring.
The mask is fixed on by screw and spring on clamping ring.
The back structure uses tungsten powder and the direct embedding of epoxy resin composition to the upper surface of piezoelectric ceramics, and is
The structure at 45 ° with horizontal plane.
Compared with prior art, the utility model has technique effect beneficial below：
The ultrasonic probe provided by the utility model for eliminating resonance can eliminate resonance in time, enhance piezoelectric ceramics
For the resolution capability of echo, and interference of the clutter for measurement can be eliminated, improve the accuracy of probe measurement；Its backing
Structure can increase the vibration damping of piezoelectric ceramics so that the resonant process of piezoelectric material terminates as early as possible, can weaken interference letter
Number, while refracting characteristic of the sound wave through interface when is utilized, the influence that clutter measures ultrasonic probe can be further decreased,
Improve the precision measured.Since back structure is avoided by the way of direct embedding since middle layer is for piezoelectric ceramics signal
Influence, if backing using paste or other modes installed, generate dielectric interlayer can be to the biography of ultrasonic wave
It broadcasts the elimination with clutter and generates bigger interference.
The ultrasonic probe provided by the utility model for eliminating resonance, using tungsten powder and epoxy resin composition embedding shape
At back structure, using the scattering of metallic particles (tungsten powder), can decay the acoustic energy emitted below from piezoelectric ceramics so that whole
A back structure plays the role of absorption and decaying the is supported or opposed ultrasonic energy of surface radiation.Utilize the backing at 45 ° with horizontal plane
Structure, the refraction angle characteristic using sound wave in interface, transfers them to the distal end of piezoelectric ceramics, will not interference echo signal
The ultrasonic probe provided by the utility model for eliminating resonance, coaxial cable core wire and is welded in piezoelectric ceramics just
Pole, back structure embedding thereon, by the way of integrally reinforcing, improve the shock resistance of bonding wire.
The ultrasonic probe provided by the utility model for eliminating resonance, it is affixed using high-temp glue in piezoelectric ceramics front end
Bright wave diaphragm not will produce interference or limitation for the propagation of ultrasonic wave, can enhance the wave transparent performance of piezoelectric ceramics, and energy
Enough from front end effective protection piezoelectric ceramics.
Description of the drawings
Fig. 1 is ultrasonic probe structural schematic diagram.
Reference numeral：1 it is mask, 2 be coaxial cable, 3 be core, 4 be back structure, 5 be piezoelectric ceramics, 6 is film
Piece, 7 be clamping ring, 8 be magnet ring, 9 be screw, 10 be spring
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings, it is described be explanation to the utility model without
It is to limit.
Fig. 1 is participated in, a kind of ultrasonic probe for eliminating resonance includes the core 3 in mask 1；Back structure 4
In core 3 and embedding is formed in above piezoelectric ceramics 5；Coaxial cable 2 is reserved cable-through hole encapsulation across mask 1 and is fixed on
Inside core 3, core wire sequentially passes through mask 1, the upper cover of core 3, back structure 4 from outside to inside, is connected to piezoelectric ceramics 5
Anode.
Further, diaphragm 6 gluing parallel with 3 end face of core is labelled to the lower section of piezoelectric ceramics 5.
It is provided with magnet ring 8 and clamping ring 7 on the outside of 3 end face of core, mask 1 is fixed on clamping ring 7.
The mask 1 is fixed on by screw 9 and spring 10 on clamping ring 7.
The back structure 4 uses tungsten powder and the direct embedding of epoxy resin composition to the upper surface of piezoelectric ceramics 5, and
For the structure at 45 ° with horizontal plane.
Specific embodiment is given below.
Fig. 1 is participated in, the core is located in mask, is fixed on clamping ring by four stainless steel screws and spring,
Diaphragm is parallel with core end face, is affixed to below piezoelectric ceramics using high-temp glue, and back structure is located in core, using tungsten powder with
Resin compound embedding is formed in above piezoelectric ceramics, and with horizontal plane structure at 45 °, coaxial cable was reserved across mask
String holes encapsulation is fixed on inside core, and core wire sequentially passes through mask, core upper cover, back structure from outside to inside, is welded in pressure
Electroceramics anode, core end face outside setting magnet ring and clamping ring, use high-temp glue affixed.
In in-site installation, probe is mounted on the outside of tank skin and is measured, due to being mounted with very thin wave transparent diaphragm, is avoided
Damages of some work condition environments for piezoelectric ceramics, while not influencing the penetration performance of wave again；Ferromagnetism container is in magnet ring
Under suction, probe is adsorbed on the outside of tank skin, while being carried out with high-temp glue affixed, non-ferrous magnetic container is directly using high-strength
The glue of degree carries out affixed.
Piezoelectric ceramics generates continuous ultrasonic under pulse excitation after installation is complete, and signal penetrates tank skin, encounter obstacle or
Echo-signal is generated when person's liquid level, echo-signal generates electric signal by the direct piezoelectric effect of piezoelectric ceramics, realizes range measurement.
If Fig. 1 shows that coaxial cable core wire sequentially passes through mask, core upper cover, back structure from outside to inside, it is being welded in piezoelectric ceramics just
Pole generates ultrasonic signal using the inverse piezoelectric effect of piezoelectric ceramics, and ultrasonic signal penetrates tank to be measured by wave transparent diaphragm
Wall when encountering interface to be measured, generates echo-signal, and echo-signal sequentially passes through tank skin and wave transparent diaphragm, acts on piezoelectric ceramics
On, in piezoelectric ceramics rear end embedding back structure, it is the highly attenuating medium of high impedance, there is stronger damping characteristic, it can be fast
Speed terminates the resonant process of piezoelectric ceramics, when echo-signal acts on piezoelectric ceramics, extra echo-signal by back structure,
Back structure interface is reached, refracting characteristic when extended media is penetrated using sound wave, transfers them to core side end face,
It not will produce mixed and disorderly repetition echo to interfere piezoelectric ceramics, to improve the precision measured.
The above is only the preferred embodiment of the utility model, is not the limit for making other forms to the utility model
System, any person skilled in the art are changed or are modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent embodiment.But it is every without departing from the content of the technical scheme of the utility model, according to the technical essence of the utility model pair
Any simple modification, equivalent variations and remodeling, still fall within the protection model of technical solutions of the utility model made by above example
It encloses.
Claims (5)
1. a kind of ultrasonic probe for eliminating resonance, which is characterized in that including the core (3) being located in mask (1)；Backing
Structure (4) is located in core (3) and embedding is formed in above piezoelectric ceramics (5)；Coaxial cable (2) is reserved across mask (1)
Cable-through hole encapsulation is fixed on core (3) inside, and core wire sequentially passes through mask (1), the upper cover of core (3), backing from outside to inside
Structure (4), is connected to the anode of piezoelectric ceramics (5).
2. the ultrasonic probe of resonance can be eliminated as described in claim 1, which is characterized in that parallel with core (3) end face
Diaphragm (6) gluing is labelled to the lower section of piezoelectric ceramics (5).
3. the ultrasonic probe of resonance can be eliminated as described in claim 1, which is characterized in that outside described core (3) end face
Side is provided with magnet ring (8) and clamping ring (7), and mask (1) is fixed on clamping ring (7).
4. the ultrasonic probe of resonance can be eliminated as described in claim 1, which is characterized in that the mask (1) passes through
Screw (9) and spring (10) are fixed on clamping ring (7).
5. the ultrasonic probe of resonance can be eliminated as described in claim 1, which is characterized in that the back structure (4) is adopted
With the upper surface of tungsten powder and the direct embedding of epoxy resin composition to piezoelectric ceramics (5), and it is the structure at 45 ° with horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782649.9U CN207703798U (en) | 2017-12-19 | 2017-12-19 | A kind of ultrasonic probe for eliminating resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782649.9U CN207703798U (en) | 2017-12-19 | 2017-12-19 | A kind of ultrasonic probe for eliminating resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207703798U true CN207703798U (en) | 2018-08-07 |
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ID=63027299
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721782649.9U Active CN207703798U (en) | 2017-12-19 | 2017-12-19 | A kind of ultrasonic probe for eliminating resonance |
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| CN (1) | CN207703798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499635A (en) * | 2018-12-17 | 2019-03-22 | 北京航空航天大学 | A kind of ultrasonic generating platform of coaxial package drop |
-
2017
- 2017-12-19 CN CN201721782649.9U patent/CN207703798U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499635A (en) * | 2018-12-17 | 2019-03-22 | 北京航空航天大学 | A kind of ultrasonic generating platform of coaxial package drop |
| CN109499635B (en) * | 2018-12-17 | 2020-08-11 | 北京航空航天大学 | Ultrasonic generation platform for coaxially wrapping liquid drops |
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