CN110624808A - Novel composite transducer - Google Patents
Novel composite transducer Download PDFInfo
- Publication number
- CN110624808A CN110624808A CN201910746944.6A CN201910746944A CN110624808A CN 110624808 A CN110624808 A CN 110624808A CN 201910746944 A CN201910746944 A CN 201910746944A CN 110624808 A CN110624808 A CN 110624808A
- Authority
- CN
- China
- Prior art keywords
- ceramic
- transducer
- connecting block
- metal connecting
- circular arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 64
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- QUSDAWOKRKHBIV-UHFFFAOYSA-N dysprosium iron terbium Chemical compound [Fe].[Tb].[Dy] QUSDAWOKRKHBIV-UHFFFAOYSA-N 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000005267 amalgamation Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a novel composite transducer which mainly comprises a driving vibrator, a metal connecting block A, a metal connecting block B and an inlaid ceramic arc, wherein two ends of the driving vibrator are respectively connected with the end surfaces of the metal connecting block A and the metal connecting block B, the side surfaces of the metal connecting block A and the metal connecting block B are connected through the inlaid ceramic arc, and a cavity is formed between the driving vibrator and the inlaid ceramic arc. The invention has the beneficial effects that: the novel composite transducer combines together inlaying ring transducer and IV type flextensional transducer, replaces the metal vibration casing of IV type flextensional transducer with the piezoceramics circular arc of inlaying, maintains the unchangeable condition of original IV type flextensional transducer basic dimension, and this kind of change can increase power element's volume, has increased the power density of transducer, can show and promote the transducer sound source level. What is to be protected is the structural form in which the outer ceramic is bonded to the inner ceramic.
Description
Technical Field
The invention relates to an underwater acoustic transducer, in particular to a novel composite transducer.
Background
The type IV flextensional transducer and the mosaic annular transducer are two commonly used transducers.
As shown in fig. 1, the IV flextensional transducer is composed of a vibrating case 6 and a cylindrical driving vibrator 3. When the vibration generator works, the driving vibrator makes long shaft stretching and contraction motion, and excites the bending vibration of the shell to carry out sound radiation. The IV type flextensional transducer has the advantages of low frequency and small size, and is widely applied in the frequency range of 300Hz to 3000 Hz. The size of the IV-type flextensional transducer shell is far smaller than the wavelength in water during working (the maximum size is about 1/4 in the wavelength in water), and under the condition of higher frequency (more than 2 kHz), the size of the transducer is smaller, the internal space is limited, the size of a power element is difficult to be enlarged, the power density of the transducer is lower, and the sound source level is difficult to be improved.
As shown in fig. 2, the ring-shaped transducer 7 is formed by splicing a rectangular ceramic strip with a wedge-shaped metal strip or a trapezoidal ceramic strip. When the splicing circular ring transducer works, the splicing circular ring transducer does stretching and contracting movement in the radial direction. The inlaid circular ring transducer has the advantages of nondirectional circumferential direction, high efficiency, wide band and the like. However, compared to the same frequency IV flextensional transducer, the size and weight of the tiled circular ring transducer is large (1.5kHz IV flextensional transducer size is about 300mm 220mm 180mm, and weight is about 25kg, 1.5kHz tiled circular ring transducer size is about Φ 650mm 200mm, and weight is about 100 kg).
The performance of the two transducers mainly depends on three aspects of materials, design and process. At present, the material aspect of the transducer is difficult to realize larger breakthrough in a short time, the design of the transducer is gradually matured along with the application of related design methods and design software, and the process of the transducer is gradually solidified along with years of engineering practice, so that the performance (mainly sound source level, bandwidth and the like) of the transducer is difficult to greatly improve by the conventional method.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a novel composite transducer capable of improving the power density and the transmission voltage response of the transducer.
The object of the present invention is achieved by the following technical means. The utility model provides a novel composite transducer, mainly includes drive oscillator, metal connecting block A, metal connecting block B and inlay the ceramic circular arc of piecing together, the terminal surface of metal connecting block A and metal connecting block B is connected respectively at the both ends of drive oscillator, and the side of metal connecting block A and metal connecting block B is connected through inlaying the ceramic circular arc of piecing together, drive oscillator and inlay and form the cavity between the ceramic circular arc of piecing together.
Preferably, the mosaic ceramic circular arcs comprise mosaic ceramic circular arcs A and mosaic ceramic circular arcs B, two ends of the mosaic ceramic circular arcs A and two ends of the mosaic ceramic circular arcs B are respectively connected with two side faces of the metal connecting block A and two side faces of the metal connecting block B, and cavities are formed between the mosaic ceramic circular arcs A and the driving vibrator and between the mosaic ceramic circular arcs B and the driving vibrator.
Furthermore, the mosaic ceramic arc A and the mosaic ceramic arc B are symmetrically arranged.
Furthermore, the driving vibrator and the mosaic ceramic arc are provided with prestress.
Preferably, the driving oscillator is a piezoelectric ceramic, rare earth, iron gallium or terbium dysprosium iron power element.
Preferably, the ceramic inlaying arc A and the ceramic inlaying arc B are formed by splicing rectangular ceramic strips with wedge-shaped metal strips or trapezoidal ceramic strips.
Preferably, the driving vibrator is arranged in a column shape.
The invention has the beneficial effects that: the novel composite transducer combines together inlaying ring transducer and IV type flextensional transducer, replaces the metal vibration casing of IV type flextensional transducer with the piezoceramics circular arc of inlaying, maintains the unchangeable condition of original IV type flextensional transducer basic dimension, and this kind of change can increase power element's volume, has increased the power density of transducer, can show and promote the transducer sound source level. What is to be protected is the structural form in which the outer ceramic is bonded to the inner ceramic.
Drawings
Fig. 1 is a schematic structural diagram of a conventional IV flextensional transducer.
Fig. 2 is a schematic structural diagram of a conventional mosaic ring transducer.
Fig. 3 is a schematic front view of the present invention.
Fig. 4 is a schematic perspective view of the present invention.
Description of reference numerals: the ceramic transducer comprises an inlaid ceramic arc A1, a metal connecting block A2, a driving vibrator 3, a metal connecting block B4, an inlaid ceramic arc B5, a vibration shell 6 and an inlaid ring transducer 7.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
as shown in fig. 3-4, the novel composite transducer mainly comprises a driving vibrator 3, a metal connecting block a2, a metal connecting block B4 and an inlaid ceramic arc, wherein the inlaid ceramic arc comprises an inlaid ceramic arc a1 and an inlaid ceramic arc B5, the inlaid ceramic arc a1 and the inlaid ceramic arc B5 are symmetrically arranged and are formed by splicing rectangular ceramic strips with wedge-shaped metal strips or trapezoidal ceramic strips. The driving vibrator 3 is made of piezoelectric ceramic, and power elements such as rare earth, iron gallium, terbium dysprosium iron and the like can be used in practical use. In this embodiment, the drive oscillator 3 be the cylindricality setting, the terminal surface of metal connecting block A2 and metal connecting block B4 is connected respectively to the both ends of drive oscillator 3, the both ends of inlaying the ceramic circular arc A1 and inlaying the ceramic circular arc B5 are connected with two sides of metal connecting block A2 and metal connecting block B4 respectively, form the cavity between inlaying between ceramic circular arc A1 and the drive oscillator 3 and between inlaying ceramic circular arc B5 and the drive oscillator 3.
The working mechanism of the invention is as follows: the action of the internal driving vibrator is the same as that of the internal vibrator of the IV-type flextensional transducer, and the internal driving vibrator does extension and contraction vibration when working and excites the bending vibration of the shell to perform sound radiation; the inlaid ceramic arc amplifies the stretching and contracting vibration of the internal driving vibrator to form sound radiation on one hand, and the inlaid piezoelectric ceramic shell can also perform bending vibration under the excitation of an electric field and radiate the vibration on the other hand; the metal connecting block is used for connecting the inlaid piezoelectric ceramic arc with the internal driving vibrator to transmit vibration and force. Remember that inside drive oscillator transducer sound source level when working alone is slv1, and inlay amalgamation pottery circular arc transducer sound source level when working alone is slv2, and the two sound source level when working jointly is slv, then can obtain when inside drive oscillator is unanimous with the work phase place of inlaying amalgamation pottery circular arc:
when slv1 and slv2 are comparable to conventional type IV flextensional transducer sound source levels, respectively, the composite transducer theoretical sound source level can be 6dB higher than a comparable size conventional type IV flextensional. It can be seen that the novel composite transducer can improve transducer power density and transmit voltage response.
The composite transducer should be designed and developed in a way that the characteristics of the external ceramic material are fully considered and the prestress is correctly set. The specific technological process should use inlaid ring transducer and IV-type flextensional transducer for reference.
Aiming at the problems that the traditional IV-type flextensional transducer is small in power density and difficult in sound source level improvement, the invention uses the inlaying circular arc to replace the original metal shell by taking the structural form of the inlaying circular ring as reference, so that the volume of a power element is increased, the power density of the transducer is improved, and the sound source level of the transducer can be improved on the premise of not changing the size of the transducer.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.
Claims (8)
1. A novel composite transducer is characterized in that: the ceramic-embedded driving vibrator mainly comprises a driving vibrator (3), a metal connecting block A (2), a metal connecting block B (4) and embedded ceramic circular arcs, the two ends of the driving vibrator (3) are respectively connected with the end faces of the metal connecting block A (2) and the metal connecting block B (4), the side faces of the metal connecting block A (2) and the metal connecting block B (4) are connected through the embedded ceramic circular arcs, and a cavity is formed between the driving vibrator (3) and the embedded ceramic circular arcs.
2. The novel composite transducer of claim 1, wherein: the ceramic circular arc of inlaying include ceramic circular arc A of inlaying (1) and ceramic circular arc B of inlaying (5), the both ends of ceramic circular arc A of inlaying (1) and ceramic circular arc B of inlaying (5) are connected with two sides of metal connecting block A (2) and metal connecting block B (4) respectively, inlay between ceramic circular arc A of inlaying (1) and drive oscillator (3) and inlay between ceramic circular arc B of inlaying (5) and the drive oscillator (3) and form the cavity.
3. The novel composite transducer of claim 2, wherein: the mosaic ceramic circular arc A (1) and the mosaic ceramic circular arc B (5) are symmetrically arranged.
4. The novel composite transducer of claim 1, wherein: the driving vibrator (3) and the inlaid ceramic arc are provided with prestress.
5. The novel composite transducer of claim 1, wherein: the driving vibrator (3) is made of piezoelectric ceramics.
6. The novel composite transducer of claim 1, wherein: the driving oscillator (3) adopts a rare earth, iron gallium or terbium dysprosium iron power element.
7. The novel composite transducer of claim 1, 2 or 3, characterized in that: the mosaic ceramic circular arc A (1) and the mosaic ceramic circular arc B (5) are formed by splicing rectangular ceramic strips matched with wedge-shaped metal strips or trapezoidal ceramic strips.
8. The novel composite transducer of claim 1 or 3 or 4 or 5, characterized in that: the driving vibrator (3) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746944.6A CN110624808B (en) | 2019-08-14 | 2019-08-14 | Novel composite transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746944.6A CN110624808B (en) | 2019-08-14 | 2019-08-14 | Novel composite transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110624808A true CN110624808A (en) | 2019-12-31 |
| CN110624808B CN110624808B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910746944.6A Active CN110624808B (en) | 2019-08-14 | 2019-08-14 | Novel composite transducer |
Country Status (1)
| Country | Link |
|---|---|
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040041497A1 (en) * | 2002-06-12 | 2004-03-04 | Kazuaki Hamada | Piezoelectric sounding body and piezoelectric electroacoustic transducer using the same |
| CN102682756A (en) * | 2012-05-15 | 2012-09-19 | 哈尔滨工程大学 | Ultralow-frequency flexual-tensional underwater acoustic transducer |
| CN105324184A (en) * | 2013-06-20 | 2016-02-10 | 罗伯特·博世有限公司 | Electroacoustic transducer |
| JP3219041U (en) * | 2018-06-22 | 2018-11-22 | 詠業科技股▲ふん▼有限公司 | Acoustic impedance matching layer |
| CN109616091A (en) * | 2018-11-29 | 2019-04-12 | 哈尔滨工程大学 | A kind of low side surface radiation annulus energy converter |
| WO2019098861A1 (en) * | 2017-11-20 | 2019-05-23 | Auckland University Of Technology | Stepped cylindrical piezoelectric transducer |
| CN211217401U (en) * | 2019-08-14 | 2020-08-11 | 中国船舶重工集团公司第七一五研究所 | Novel composite transducer |
-
2019
- 2019-08-14 CN CN201910746944.6A patent/CN110624808B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040041497A1 (en) * | 2002-06-12 | 2004-03-04 | Kazuaki Hamada | Piezoelectric sounding body and piezoelectric electroacoustic transducer using the same |
| CN102682756A (en) * | 2012-05-15 | 2012-09-19 | 哈尔滨工程大学 | Ultralow-frequency flexual-tensional underwater acoustic transducer |
| CN105324184A (en) * | 2013-06-20 | 2016-02-10 | 罗伯特·博世有限公司 | Electroacoustic transducer |
| WO2019098861A1 (en) * | 2017-11-20 | 2019-05-23 | Auckland University Of Technology | Stepped cylindrical piezoelectric transducer |
| JP3219041U (en) * | 2018-06-22 | 2018-11-22 | 詠業科技股▲ふん▼有限公司 | Acoustic impedance matching layer |
| CN109616091A (en) * | 2018-11-29 | 2019-04-12 | 哈尔滨工程大学 | A kind of low side surface radiation annulus energy converter |
| CN211217401U (en) * | 2019-08-14 | 2020-08-11 | 中国船舶重工集团公司第七一五研究所 | Novel composite transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110624808B (en) | 2024-06-18 |
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