CN115532570A - Deep water nondirectional transducer - Google Patents
Deep water nondirectional transducer Download PDFInfo
- Publication number
- CN115532570A CN115532570A CN202110738473.1A CN202110738473A CN115532570A CN 115532570 A CN115532570 A CN 115532570A CN 202110738473 A CN202110738473 A CN 202110738473A CN 115532570 A CN115532570 A CN 115532570A
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- Prior art keywords
- transducer
- connecting rod
- deep water
- nondirectional
- radiation head
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 230000005855 radiation Effects 0.000 claims abstract description 49
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 230000000737 periodic effect Effects 0.000 claims abstract description 11
- 239000004593 Epoxy Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
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- 230000007547 defect Effects 0.000 description 2
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- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 239000008204 material by function Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- 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
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
Abstract
The invention belongs to the fields of underwater acoustic communication, underwater resources, object detection, underwater acoustic confrontation, marine information acquisition and the like, and particularly relates to a deep-water omnidirectional transducer which comprises a polyhedral central mass block, wherein each surface of a plurality of periodic symmetrical surfaces of the central mass block is fixedly provided with a connecting rod, a piezoelectric ceramic stack is sleeved on the connecting rod, and the other end of the connecting rod is connected with a radiation head with a barrel; the number of the periodic symmetrical surfaces is more than or equal to 3. The invention can be applied to the fields of underwater acoustic communication, underwater detection, exploration, underwater acoustic countermeasure, marine information acquisition and the like.
Description
Technical Field
The invention belongs to the fields of underwater acoustic communication, underwater resources, object detection, underwater acoustic countermeasure, marine information acquisition and the like, and particularly relates to a low-frequency, high-power and deep-water transducer without directivity.
Background
The underwater sound emission transducer is used as a device for generating underwater sound wave signals. The underwater sound emission transducer is indispensable and important equipment in the fields of marine information acquisition, resource exploration, target detection, underwater sound confrontation and the like. Compared with a high-frequency sound source, the sound source of the low-frequency deep-water high-power transducer is much less attenuated and absorbed by a water medium, and meanwhile, by using the ocean sound channel shaft, more remote communication and remote target detection can be realized, and large-scale ocean characteristic monitoring research can be efficiently carried out, such as: temperature, internal wave, etc.
The large-depth transducer needs to have good pressure resistance, one of the common large-depth transducers adopts gas pressure compensation, the working depth can reach about 1000m, the larger depth mostly adopts a liquid filling pressure compensation and self pressure resistant overflow structure mode, mainly comprises an oil filling circular tube transducer, an overflow splicing circular tube transducer, an oil filling composite rod transducer and the like, the depth can reach ten thousand meters, but the large-depth transducer is generally used for communication, and the working frequency is higher than a few kHz.
In recent years, the deep water low-frequency transmission adopts Janus-Helmholtz, janus hammer Bell, a piezoelectric mosaic circular tube and cylinder composite transducer and the like, and the structure adopts a self pressure-resistant and overflow pressure balance mode to realize large-depth work. The piezoelectric inlaying circular tube has larger low-frequency size, complex inlaying process, difficult guarantee of consistency, difficult repair and large-depth structure and lower working reliability compared with the former two. The Janus-Helmholtz excites a Helmholtz cavity formed by the cylinder body by using the double-end composite rod transducer to carry out low-frequency high-power emission. The defects are that the difference of the sending voltage of the radiation head of the energy converter and the circumferential radiation port of the cylinder body is large, obvious directivity exists, the circumferential radiation port of the cylinder body is utilized to carry out horizontal all-directional emission, and the sound source level is low. And the radiation head is adopted for emitting, and due to the open angle problem and factors such as wind waves in water, ocean currents in water and the like, the posture of the arranged transducer can generate the conditions such as rotation, pitching and the like, so that the inconvenience is brought to the test and the use. Janus hammer Bell utilizes the coupling of the longitudinal vibration of the double-end-face composite rod and the radial vibration of the cylinder to expand the bandwidth, and has the defects that the radial size is large, the Helmholtz resonant frequency is high in the working modal frequency of the cylinder vibration in the same size, the contribution to low frequency is small, and the sound source level of a low-frequency band is low.
Disclosure of Invention
The invention aims to provide an omnidirectional deep water low-frequency high-power transducer. The energy converter structure is self-pressure-resistant, can be used for large-depth operation, and realizes horizontal and spatial nondirectional acoustic emission by the aid of the plurality of cylindrical radiation head structures.
In order to achieve the purpose, the invention adopts the following technical scheme:
a deepwater nondirectional transducer comprises a polyhedral central mass block, wherein each surface of a plurality of periodic symmetrical surfaces of the central mass block is fixedly provided with a connecting rod, a piezoelectric ceramic stack is sleeved on the connecting rod, and the other end of the connecting rod is connected with a radiation head with a cylinder; the number of the periodic symmetrical surfaces is more than or equal to 3.
One end of the connecting rod is connected with the central mass block, and the other end of the connecting rod is connected with the radiation head with the cylinder.
Preferably, the polyhedron shape is a triangular prism shape or a square shape. One skilled in the art can also select the polyhedron shape to be octahedral or other polyhedron shapes as needed.
Preferably, the piezoelectric ceramic stacks connected on the periodic symmetry planes are centered on the central mass block.
Preferably, the plurality of periodic symmetry planes are circumferentially distributed on the central mass block.
Preferably, the shape of the radiation head with the cylinder is conical, cylindrical, arc-shaped or polygonal. Other shapes may also be selected as desired by those skilled in the art.
Preferably, the piezoelectric ceramic stacks are connected in series mechanically and in parallel in a circuit, and the ceramic plates are bonded by epoxy.
According to a preferred embodiment of the invention, the transducer of the invention comprises a plurality of radiation heads with cylinders, a plurality of piezoelectric ceramic piles, a plurality of connecting rods, a central mass block, a wrapped insulating water tight layer and a power supply cable head. One end of the connecting rod is fixed on a central mass block with a screw hole, the piezoelectric ceramic stack and the radiation head with the cylinder are sequentially sleeved on the connecting rod with insulation treatment (the insulation treatment can be that an insulation sleeve is sleeved on the connecting rod), and the other end of the connecting rod is fastened on the radiation head with the cylinder by a nut. A plurality of piezoelectric ceramic piles and cylindrical radiation head structures which are rigidly connected to the central mass block through connecting rods and nuts are uniformly distributed on the whole body by taking the central mass block as the center.
The center mass block is a metal polyhedron, a threaded hole is formed in the center of a plurality of circumferential periodic symmetry surfaces, and the threaded hole is rigidly connected with one end of the piezoelectric ceramic in a prestress applying mode through bonding. The upper and lower end faces of the metal polyhedron can be provided with screw holes or through holes for the suspension, fixation, array connection and the like of the transducer. And the cable outlet hole is also arranged on the cable outlet device.
The shape of the radiation head with the cylinder is not limited to cone, arc and polygon, and can be integrally formed, or the cylinder and the radiation head can be processed in a split way as shown in figures 7, 8 and 9, wherein the part 8 is the radiation head, the part 9 is the cylinder, the radiation head and the part 9 are rigidly connected into a whole in a bolt fastening mode, and the split cylinder can be made of metal or nonmetal. The shape of the radiation head without the cylinder part can be cylindrical, truncated cone-shaped, polygonal/arc-shaped, and the inner end surface of the radiation head and one end of the piezoelectric ceramic stack are rigidly connected in a bonding and prestress applying mode.
The piezoelectric ceramic piles are mechanically connected in series and are connected in parallel in a circuit mode, electrode plates (ceramic plates) are arranged among the ceramic plates and are bonded by epoxy, ceramic insulating gaskets are arranged at two ends of each piezoelectric ceramic pile, and the two ends of each piezoelectric ceramic pile are respectively connected with the radiation head with the cylinder and the central mass block through prestress connecting rods and nuts.
The driving piezoelectric ceramic stack can also adopt other active functional materials, such as giant magnetostrictive materials, piezoelectric single crystals, iron gallium and the like.
The number of the circumferential structural cycles of the transducers is not less than 3, and horizontal non-directivity is realized.
Furthermore, the transducer can be expanded into a spatial hexahedron structure and a polyhedral structure with uniformly distributed and expanded space, so that the spatial omni-directional work is realized.
The connecting rod of the invention can be a prestressed connecting rod. Other types of connections may be used.
The transducer of the present invention is not limited to low frequency use and may be applied to high frequency.
Compared with the prior art, the invention has the advantages that:
the invention provides a plurality of transducers with a cylindrical radiation head structure, which realize high-power emission by utilizing the characteristic that the sound source level of a radiation head end is larger than that of a cylindrical opening end and the contribution of superposition of sound fields of a plurality of radiation heads. Adopt integrative radiation head structure, compare barrel radiation head separation mode, realize that the structure radiation quality increases, realize producing lower operating frequency than with unidimensional Janus-Helmholtz transducer, the structure is from withstand voltage, but the operation of big degree of depth is used, and a plurality of circumference area section of thick bamboo radiation head structures have realized the acoustic emission that the level is not directional. The space uniformly distributed extension structure can realize the space omnidirectional sound emission of deep water, low frequency and high power. The transducer structure can be expanded to omnidirectional deep water and high-frequency high-power work by adjusting the size.
The invention can be applied to the fields of underwater acoustic communication, underwater detection, exploration, underwater acoustic countermeasure, marine information acquisition and the like.
Drawings
Fig. 1 is a schematic structural view of a cross-shaped planar deep water nondirectional transducer according to embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a central mass block for a cruciform structure according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a trifurcate planar deep water omnidirectional transducer according to embodiment 2 of the present invention;
fig. 4 is a schematic structural view of a middle mass block for a three-forked structure in embodiment 2 of the present invention;
fig. 5 is a schematic structural view of a spatial six-sided deepwater nondirectional transducer according to embodiment 3 of the present invention;
FIG. 6 is a schematic view of an integral tape cartridge radiation head of the present invention;
FIG. 7 is an assembled view of the split cartridge and radiation head structure of the present invention;
FIG. 8 is an assembly view of the split arc barrel and radiation head structure of the present invention;
FIG. 9 is an assembled cross-sectional view of the split arc barrel and radiation head structure of the present invention;
reference numerals: 1. a piezoelectric ceramic stack; 2. a central mass block; 3. a tape cartridge radiation head; 4. a nut; 5. a connecting rod; 6. a screw hole; 7. an aperture; 8. a radiation head; 9. and (4) a barrel.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
example 1
As shown in figure 1, the horizontal nondirectional deep-water low-frequency high-power transducer comprises four cylindrical radiation heads 3, four piezoelectric ceramic stacks 1, four prestressed nuts 4, four connecting rods 5 and a central mass block 2. One end of a connecting rod 5 is fixed on a central mass block 2 provided with a screw hole 6, the central mass block 2 is as shown in figure 2, a piezoelectric ceramic stack 1 and a radiation head 3 with a cylinder are sequentially sleeved on the connecting rod 5 with an insulating sleeve, and the other end of the connecting rod 5 is fastened on the radiation head 3 with the cylinder by a nut 4. 4 connect in the area section of thick bamboo radiation head 3 of central quality piece 2 through nut 4, connecting rod 5, piezoelectric ceramic piles 1 structure wholly uses central quality piece 2 as the center equipartition all around, is the cross. The transducer of the embodiment also comprises an enclosed insulating watertight layer, a power supply cable head and other accessory structures.
The central mass block has four symmetrical screw holes 6 as shown in fig. 2, and the upper and lower end faces have holes 7, which may be 2 blind holes or through holes, and are used as cable interface, hanging or array fixing. The holes 7 may also be provided in unused spaces of the central mass, such as edges, corners, etc.
The assembly process of this embodiment is as follows:
connecting rod 5 one end coating epoxy screws on a terminal surface area screw 6 central quality piece 2, and 5 insulating tube sets of connecting rod, and ceramic insulation piece and piezoceramics pile 1, use the electrode piece between the piezoceramics, and coating epoxy is according to mechanical series connection, and circuit parallel mode overlaps on connecting rod 5, places another ceramic insulation piece, then covers terminal surface coating epoxy in band section of thick bamboo radiation head 3 on connecting rod 5 from its trompil department. Prestress is applied to the two ends of the central mass block 2 and the radiation head 3 with the cylinder, the nut is coated with epoxy, is screwed into the other end of the connecting rod 5 and is fastened on the radiation head 3 with the cylinder through the nut 4.
In the same way, the other 3 subsequent branches are assembled in sequence, prestress with the same size is applied to the other 3 branches, the other 3 branches are installed, the positive electrodes and the negative electrodes of the 4-path piezoelectric ceramic stacks are respectively welded in parallel, the positive electrodes and the negative electrodes are short-circuited to prevent discharge, and the piezoelectric ceramic stacks are dried in an oven at the temperature of 80 ℃ for more than 4 hours and cured.
The cured structure, each piezoelectric ceramic stack 1, the fastened connecting rod 5, the nut 4 and other parts, the connected connecting part with the cylindrical radiation head 3 and the central mass block 2 are subjected to watertight filling and insulating treatment, polyurethane is respectively poured, and the materials are dried in an oven at 80 ℃ for more than 4 hours and cured.
The radiation head 3 with the cylinder can be integrally formed as shown in fig. 6, or assembled by adopting a split cylinder and a radiation head structure as shown in fig. 7, a cylinder 9 and a radiation head 8 are respectively processed, wherein the cylinder body can be a bottom cambered surface, the side wall of the cylinder is conical as shown in fig. 8-9, the cylinder body and the radiation head are rigidly connected together, and an O ring and a filling mode can be adopted to carry out sealing treatment on a contact surface.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that the central mass block of the present embodiment is a triangular prism shape as shown in fig. 4, and the whole transducer structure is in a trifurcate shape.
Example 3
As shown in fig. 5, this embodiment is different from embodiment 1 in that six piezo ceramic stacks and a radiation head with a cylinder are respectively disposed on six faces of a central mass.
In the invention, when each surface of the polyhedron is provided with the radiation head with the cylinder, the hole 7 can be placed in the unused space of the central mass block, such as the space of an edge, an angle and the like.
Conventional technical knowledge in the art can be used for the details which are not described in the present invention.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The deep water nondirectional transducer is characterized by comprising a polyhedral central mass block, wherein each surface of a plurality of periodic symmetrical surfaces of the central mass block is fixedly provided with a connecting rod, a piezoelectric ceramic stack is sleeved on the connecting rod, and the other end of the connecting rod is connected with a radiation head with a cylinder; the number of the plurality of periodic symmetric surfaces is more than or equal to 3.
2. The deep water nondirective transducer according to claim 1, wherein the polyhedron is in the shape of a triangular prism or a square.
3. The deep water nondirectional transducer of claim 1, wherein the piezoelectric ceramic stacks connected on the plurality of periodic symmetry planes are centered on the central mass.
4. The deep water nondirectional transducer of claim 1, wherein a plurality of periodic symmetry planes are circumferentially distributed on the central mass.
5. The deep water nondirectional transducer of claim 1, wherein the shape of the cylindrical radiation head is conical, cylindrical, arcuate or polygonal.
6. The deep water nondirectional transducer according to claim 1, wherein the piezoelectric ceramic stacks are mechanically connected in series and electrically connected in parallel, and the ceramic plates are bonded by epoxy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738473.1A CN115532570A (en) | 2021-06-30 | 2021-06-30 | Deep water nondirectional transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110738473.1A CN115532570A (en) | 2021-06-30 | 2021-06-30 | Deep water nondirectional transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115532570A true CN115532570A (en) | 2022-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110738473.1A Pending CN115532570A (en) | 2021-06-30 | 2021-06-30 | Deep water nondirectional transducer |
Country Status (1)
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| CN (1) | CN115532570A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1513530A (en) * | 1975-02-27 | 1978-06-07 | France Armed Forces | Piezoelectric transducers |
| US5483502A (en) * | 1993-12-03 | 1996-01-09 | Etat Francais Represente Par Le Delegue General Pour L'armement | Method and apparatus for emitting high power acoustic waves using transducers |
| JPH08256396A (en) * | 1995-03-17 | 1996-10-01 | Nec Corp | Underwater acoustic transmitter |
| US20040032795A1 (en) * | 2000-12-21 | 2004-02-19 | Axelle Baroni | Device for generating focused elastic waves in a material medium such as underground, and method using same |
| JP2006319404A (en) * | 2005-05-10 | 2006-11-24 | Furuno Electric Co Ltd | Ultrasonic transducer |
| US20070195647A1 (en) * | 2006-02-23 | 2007-08-23 | Image Acoustics, Inc. | Modal acoustic array transduction apparatus |
| CN200994186Y (en) * | 2006-12-21 | 2007-12-19 | 中船重工海声科技有限公司 | Multi-radiation-head underwater acoustic transducer |
| CN102169685A (en) * | 2011-03-29 | 2011-08-31 | 哈尔滨工程大学 | Small sized deepwater underwater sound energy transducer with low frequency and broad band |
| CN102824999A (en) * | 2012-08-30 | 2012-12-19 | 宁波新芝生物科技股份有限公司 | High-power ultraviolet energy converting subassembly and energy converting device |
| CN103646642A (en) * | 2013-11-29 | 2014-03-19 | 哈尔滨工程大学 | A multi-liquid-chamber low-frequency broadband underwater acoustic transducer |
| CN104810013A (en) * | 2014-01-23 | 2015-07-29 | 中国科学院声学研究所 | Low-frequency composite rod coupling cavity energy converter for deep water |
| CN105689249A (en) * | 2016-03-22 | 2016-06-22 | 中国计量学院 | Compound drive piezoelectric ultrasonic-pipe-shaped transducer |
| CN107465982A (en) * | 2017-06-16 | 2017-12-12 | 北京长城电子装备有限责任公司 | A kind of high-power deepwater wideband transducer |
-
2021
- 2021-06-30 CN CN202110738473.1A patent/CN115532570A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1513530A (en) * | 1975-02-27 | 1978-06-07 | France Armed Forces | Piezoelectric transducers |
| US5483502A (en) * | 1993-12-03 | 1996-01-09 | Etat Francais Represente Par Le Delegue General Pour L'armement | Method and apparatus for emitting high power acoustic waves using transducers |
| JPH08256396A (en) * | 1995-03-17 | 1996-10-01 | Nec Corp | Underwater acoustic transmitter |
| US20040032795A1 (en) * | 2000-12-21 | 2004-02-19 | Axelle Baroni | Device for generating focused elastic waves in a material medium such as underground, and method using same |
| JP2006319404A (en) * | 2005-05-10 | 2006-11-24 | Furuno Electric Co Ltd | Ultrasonic transducer |
| US20070195647A1 (en) * | 2006-02-23 | 2007-08-23 | Image Acoustics, Inc. | Modal acoustic array transduction apparatus |
| CN200994186Y (en) * | 2006-12-21 | 2007-12-19 | 中船重工海声科技有限公司 | Multi-radiation-head underwater acoustic transducer |
| CN102169685A (en) * | 2011-03-29 | 2011-08-31 | 哈尔滨工程大学 | Small sized deepwater underwater sound energy transducer with low frequency and broad band |
| CN102824999A (en) * | 2012-08-30 | 2012-12-19 | 宁波新芝生物科技股份有限公司 | High-power ultraviolet energy converting subassembly and energy converting device |
| CN103646642A (en) * | 2013-11-29 | 2014-03-19 | 哈尔滨工程大学 | A multi-liquid-chamber low-frequency broadband underwater acoustic transducer |
| CN104810013A (en) * | 2014-01-23 | 2015-07-29 | 中国科学院声学研究所 | Low-frequency composite rod coupling cavity energy converter for deep water |
| CN105689249A (en) * | 2016-03-22 | 2016-06-22 | 中国计量学院 | Compound drive piezoelectric ultrasonic-pipe-shaped transducer |
| CN107465982A (en) * | 2017-06-16 | 2017-12-12 | 北京长城电子装备有限责任公司 | A kind of high-power deepwater wideband transducer |
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