CN220873252U - Multi-type functional material combined weak directivity spherical shell transducer - Google Patents
Multi-type functional material combined weak directivity spherical shell transducer Download PDFInfo
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- CN220873252U CN220873252U CN202322692628.XU CN202322692628U CN220873252U CN 220873252 U CN220873252 U CN 220873252U CN 202322692628 U CN202322692628 U CN 202322692628U CN 220873252 U CN220873252 U CN 220873252U
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Abstract
The utility model discloses a multi-type functional material combined weak directivity spherical shell transducer, which comprises: the top of the first piezoelectric semispherical shell is provided with a first piezoelectric semispherical shell opening; the bottom of the second piezoelectric semispherical shell is provided with a second piezoelectric semispherical shell through hole, and the second piezoelectric semispherical shell and the first piezoelectric semispherical shell are connected into a piezoelectric semispherical shell; the prestress layer is arranged on the outer side of the piezoelectric spherical shell; the sound-transmitting rubber layer is arranged on the outer side of the prestress layer, and one end of the sound-transmitting rubber layer is connected with the mounting seat; the center rod is connected to the mounting seat and is positioned on the opening of the first piezoelectric semispherical shell and the opening of the second piezoelectric semispherical shell; wherein, the second piezoelectricity semispherical shell is connected with watertight cable through the connecting wire. The utility model can realize that the radiation sound field has weak directivity characteristic, and achieves high transmission response and good universality.
Description
Technical Field
The utility model relates to a transducer, in particular to a multi-type functional material combined weak directivity spherical shell transducer, and belongs to the technical field of underwater acoustic transducers.
Background
The underwater sound transducer is used as an 'ear eye' of various sonar equipment, and can realize the emission and the reception of underwater sound waves. Along with the wide application of various acoustic devices such as a lifting sonar, a towing sonar, an underwater unmanned submarine carrying sonar and the like in the field of underwater target detection, the detection capability of acoustic transducers carried by various underwater carriers provides new requirements, wherein the detection angle range is one of key indexes for describing the capability of underwater acoustic detection devices. In order to quickly acquire a larger detection sector, certain requirements need to be met in the directivity design of the underwater acoustic transducer. Moreover, to improve the convenience of use of the acoustic detection device, the transducer is being miniaturized.
To make the transducer form a certain directivity in space, the conventional means in the technical field of underwater acoustic transducers is to design an acoustic baffle with a certain structural characteristic, and realize that the transducer has a certain directivity characteristic in space through the absorption and reflection of sound waves. The invention patent with application publication number CN112153543A provides a half-space radiation high-frequency broadband transducer, which comprises a piezoelectric ceramic spherical shell, an anti-sound baffle and a tuning circuit. The patent adopts the sound baffle technology, realizes the half-space sound wave radiation with the directivity angle of about 180 degrees by making the distance between the extension line of the reflecting surface and the spherical center of the piezoelectric ceramic spherical shell be 0.25 times of the wavelength of the working frequency, and eliminates the obvious valley in the middle of the directivity wave beam.
The sound baffle technology belongs to a common technical means in the field, and the method can be widely used for directivity regulation and control of various medium-frequency and high-frequency underwater sound transducers. However, the main disadvantage of this method is that once the structural features and dimensions of the sound baffle are determined, the radiation sound field within a certain frequency range (even a single frequency point) can be regulated, and the design of the sound baffle as described in CN112153543a is related to 0.25 times of the wavelength of the working frequency, which is also a limitation of the sound baffle technology. In addition, the approach to sound baffle modulation requires additional space in the transducer itself. Especially in the case of low frequency, the directivity of a certain direction of the transducer is adjusted through the sound baffle, so that the size and weight of the sound baffle are far greater than those of the transducer, and the use convenience is seriously insufficient.
Therefore, it is necessary to develop an underwater sound emission transducer which has weak directivity characteristics in space and has directivity characteristics covering a larger frequency range without increasing the size of the transducer, and the key point of solving the technical problems is to solve.
Disclosure of Invention
Aiming at the defects and shortcomings in the background technology, the utility model improves and innovates the defects, and aims to provide the multi-type functional material combined type weak directivity spherical shell transducer for underwater target detection, which can realize that a radiation sound field has weak directivity characteristics, and achieves high transmission response and good universality.
The utility model further aims to provide the spherical shell transducer with the prestress layer, so that the high-power tolerance of the spherical shell transducer can be effectively improved.
In order to solve the above problems and achieve the above objects, the present utility model provides a multi-type functional material combined type weak directivity spherical shell transducer, which is realized by adopting the following design structure and the following technical scheme:
As an improvement of the combined weak directivity spherical shell transducer of the multifunctional material, the utility model comprises the following steps:
the top of the first piezoelectric semispherical shell (1) is provided with a first piezoelectric semispherical shell opening;
The bottom of the second piezoelectric semispherical shell (2) is provided with a second piezoelectric semispherical shell through hole, and the second piezoelectric semispherical shell (2) and the first piezoelectric semispherical shell (1) are connected into a piezoelectric semispherical shell;
the prestress layer (3), the prestress layer (3) is set up in the outside of the ball shell of piezoelectricity;
The waterproof sound-transmitting layer (4), the waterproof sound-transmitting layer (4) is arranged outside the prestress layer (3), and one end of the waterproof sound-transmitting layer (4) is connected with the mounting seat (5);
the center rod (6), the center rod (6) is connected to the mounting seat (5) and is positioned on the opening of the first piezoelectric semispherical shell and the opening of the second piezoelectric semispherical shell;
The second piezoelectric semispherical shell (2) is connected with the watertight cable (8) through a connecting wire (7).
As the improvement of the utility model, one side of the opening of the first piezoelectric semispherical shell is also connected with a front vibration isolation pad (9);
One side of the second piezoelectric semispherical shell through hole is also connected with a rear vibration isolation pad (10);
The front vibration isolator (9) and the rear vibration isolator (10) are used for realizing positioning and installation between the piezoelectric spherical shell and the center rod (6), and the front vibration isolator (9) and the rear vibration isolator (10) also play a vibration isolation decoupling role.
As a further improvement of the utility model, the connecting end of the mounting seat (5) and the waterproof sound-transmitting layer (4) is of a tooth-shaped annular groove structure; the outer wall of the non-connecting end of the mounting seat (5) is also provided with a thread structure and a sealing groove, and a sealing ring (11) is connected in the sealing groove.
As a further improvement of the present utility model, the sealing groove is disposed above the screw structure;
the mounting seat (5) is made of a corrosion-resistant metal material, and the surface of the mounting seat is subjected to shot blasting.
As a further improvement of the utility model, the first piezoelectric hemispherical shell (1) and the second piezoelectric hemispherical shell (2) are bonded to form a piezoelectric hemispherical shell, wherein the first piezoelectric hemispherical shell (1) and the second piezoelectric hemispherical shell (2) are connected in parallel, the polarization directions are the same, and the piezoelectric hemispherical shell generates vibration under the action of changing voltage so as to radiate sound waves outwards.
As a still further improvement of the utility model, the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) are respectively made of materials with different piezoelectric strain constants, wherein the difference of the piezoelectric strain constant values of the materials of the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) has positive correlation influence relationship on the directivity of the spherical shell transducer, namely the larger the difference is, the more obvious the directivity is; and vice versa.
As a still further improvement of the utility model, the prestress layer (3) is formed by winding fibers on the outer surface of the piezoelectric spherical shell by adopting a prestress device to apply prestress, coating epoxy resin cementing agent on the surface of the piezoelectric spherical shell, and curing.
As a still further improvement of the utility model, the waterproof sound-transmitting layer (4) is formed by sealing the sound-transmitting rubber on the outer surface of the prestress layer (3) to form a spherical structure with an opening at one end, and a connecting part for connecting the mounting seat (5) is arranged at the opening in an outward extending manner.
As a still further improvement of the utility model, the central rod (6) is integrally of a hollow cylindrical structure with two open ends;
One end of the watertight cable (8) sequentially penetrates through the inner cavities of the mounting seat (5) and the central rod (6) to be connected with the positive electrode connecting wire (7) and the negative electrode connecting wire (7) on the second piezoelectric semispherical shell (2) respectively, and the other end of the watertight cable is also connected with the electric connector (12).
As a still further improvement of the utility model, the central rod (6) is arranged coaxially with the mounting seat (5) and the second piezoelectric semispherical shell through opening and the first piezoelectric semispherical shell opening.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model combines piezoelectric materials with different piezoelectric strain constants into the spherical shell transducer, and utilizes the physical relation of the positive correlation between the response of the transmission voltage of the piezoelectric transducer and the piezoelectric strain constant to realize the characteristics of weak directivity of the radiation sound field of the spherical shell transducer in space, so that the beam width can be increased under certain conditions, and the coverage of sound waves can be improved;
2. The spherical shell transducer adopts the prestress layer, so that the high-power tolerance capacity of the spherical shell transducer can be effectively improved;
3. the utility model has the advantages of high response to the sending voltage, good universality and the like.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is one of the usage patterns of the present utility model;
FIG. 2 is a second view of the present utility model;
FIG. 3 is a third view of the use of the present utility model;
FIG. 4 is a fourth view of the use state of the present utility model;
FIG. 5 is a fifth view of the usage status of the present utility model;
FIG. 6 is a sixth state diagram of the use of the present utility model;
FIG. 7 is a schematic view of the overall structure of the present utility model;
FIG. 8 is a schematic plan view of the present utility model;
FIG. 9 is a schematic cross-sectional view of the plane of FIG. 8 A-A;
FIG. 10 is a schematic cross-sectional view of a partial structure of the present utility model;
FIG. 11 is a schematic diagram of the directivity curve of the present utility model;
Wherein, the reference numerals in the figures: 1-a first piezoelectric semispherical shell, 2-a second piezoelectric semispherical shell, 3-a pre-stress layer, 4-a waterproof sound-transmitting layer, 5-a mounting seat, 6-a central rod, 7-a connecting wire, 8-a watertight cable, 9-a front vibration isolator, 10-a rear vibration isolator, 11-a sealing ring, 11-an electric connector, 13-an underwater unmanned underwater vehicle and 14-hoisting equipment.
Detailed Description
In order to make the technical means, the inventive features, the achieved objects and the effects of the present utility model easy to understand, the technical solution of the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments of the present utility model and the features of the embodiments can be combined without conflict. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
A multi-type functional material combined type weak directivity spherical shell transducer as shown in the attached drawings of the specification, comprising:
the top of the first piezoelectric semispherical shell 1 is provided with a first piezoelectric semispherical shell opening;
The bottom of the second piezoelectric semispherical shell 2 is provided with a second piezoelectric semispherical shell through hole, and the second piezoelectric semispherical shell 2 and the first piezoelectric semispherical shell 1 are connected into a piezoelectric semispherical shell;
the prestress layer 3 is arranged on the outer side of the piezoelectric spherical shell;
The waterproof sound-transmitting layer 4 is arranged outside the prestress layer 3, and one end of the waterproof sound-transmitting layer 4 is connected with the mounting seat 5;
the center rod 6 is connected to the mounting seat 5 and is positioned on the opening of the first piezoelectric semispherical shell and the opening of the second piezoelectric semispherical shell;
Wherein the second piezoelectric semispherical shell 2 is connected with a watertight cable 8 through a connecting wire 7.
In the utility model, the material of the first piezoelectric semispherical shell 1 is a PZT-4 model, and the piezoelectric strain constant d33 is 2.89 multiplied by 10-10C/N;
The second piezoelectric semispherical shell 2 is made of a PZT-4D model, and the piezoelectric strain constant D33 is 3.15X10-10C/N.
The waterproof sound-transmitting layer 4 is a waterproof sound-transmitting rubber layer having waterproof, sound-transmitting and anti-collision properties.
Further, one side of the opening of the first piezoelectric semispherical shell is also connected with a front vibration isolation pad 9;
one side of the second piezoelectric semispherical shell through hole is also connected with a rear vibration isolator 10;
The front vibration isolator 9 and the rear vibration isolator 10 are used for realizing positioning and installation between the piezoelectric spherical shell and the center rod 6, and the front vibration isolator 9 and the rear vibration isolator 10 also play a vibration isolation and decoupling role.
In the utility model, the bottom end of the second piezoelectric semispherical shell is provided with a through hole so as to lead out the internal electrode by the connecting wire 7 and facilitate the positioning and fixing of the piezoelectric semispherical shell and other parts of the transducer.
Furthermore, the connecting end of the mounting seat 5 and the waterproof sound-transmitting layer 4 is of a toothed annular groove structure; the outer wall of the non-connecting end of the mounting seat 5 is also provided with a thread structure and a sealing groove, and a sealing ring 11 is connected in the sealing groove.
In the utility model, the sealing fastening connection with other equipment can be realized through the cooperation of the thread structure and the sealing ring 11.
Further, the sealing groove is arranged above the thread structure;
The mounting seat 5 is made of a corrosion-resistant metal material, and the surface of the mounting seat is subjected to shot blasting.
In the utility model, the mounting seat 5 is made of 316 stainless steel, and can resist seawater corrosion; the surface of the mounting seat 5 is subjected to shot blasting treatment so as to increase the contact area and the bonding effect of the mounting seat 5 and the waterproof sound-transmitting layer 4, and the tooth-shaped structure can also reduce the risk that water molecules infiltrate into the transducer along the bonding surface.
Further, the first piezoelectric hemispherical shell 1 and the second piezoelectric hemispherical shell 2 are bonded to form a piezoelectric hemispherical shell, wherein the first piezoelectric hemispherical shell 1 and the second piezoelectric hemispherical shell 2 are connected in parallel, the polarization directions are the same, and the piezoelectric hemispherical shell generates vibration under the action of changing voltage so as to radiate sound waves outwards.
In the utility model, the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are polarized along the 'inner positive and outer negative' directions, the inner surfaces of the first piezoelectric semispherical shell and the second piezoelectric semispherical shell are welded to realize the parallel connection of positive electrodes, and the first piezoelectric semispherical shell and the second piezoelectric semispherical shell are bonded by adopting a high-temperature epoxy resin cementing agent and solidified after being subjected to high temperature to realize stable bonding.
Further, the first piezoelectric hemispherical shell 1 and the second piezoelectric hemispherical shell 2 are respectively made of materials with different piezoelectric strain constants, wherein the difference of the piezoelectric strain constant values of the materials of the first piezoelectric hemispherical shell 1 and the second piezoelectric hemispherical shell 2 has a positively correlated influence relationship on the directivity of the spherical shell transducer, namely the larger the difference is, the more obvious the directivity is; and vice versa.
In the utility model, a first piezoelectric semispherical shell 1 and a second piezoelectric semispherical shell 2 are respectively formed by materials with different piezoelectric strain constants, a semispherical bonding surface is used as an interface, and as the piezoelectric semispherical shell with higher piezoelectric strain constant has higher transmission voltage response, the piezoelectric semispherical shell with lower piezoelectric strain constant has lower transmission voltage response, and the transmission responses of the spherical shell transducers at two sides of the interface have size difference, namely a weak directive radiation sound pressure field is formed at any direction plane of the interface;
The first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are combined, and the directivity of the spherical shell transducer can be regulated and controlled.
Further, the pre-stressing layer 3 is formed by winding fibers on the outer surface of the piezoelectric spherical shell by pre-stressing equipment to apply pre-stressing, coating epoxy resin cementing agent on the surface of the piezoelectric spherical shell, and curing.
In the utility model, the outer surface of the piezoelectric spherical shell is prestressed in a fiber winding mode to form the prestress layer, so that the high-power tolerance capability of the transducer during working can be improved.
Further, the waterproof sound-transmitting layer 4 is sealed on the outer surface of the pre-stressing layer 3 by sound-transmitting rubber to form a spherical structure with an opening at one end, and a connecting part for connecting the mounting seat 5 is arranged at the opening in an outward extending manner.
In the utility model, the connecting part and the spherical structure are integrated into a whole; the waterproof sound-transmitting layer 4 is a sound-transmitting rubber layer, sound-transmitting rubber is encapsulated outside the prestress layer 3 of the spherical shell transducer, and polyurethane sound-transmitting rubber is preferably selected as the sound-transmitting rubber material so as to achieve the purposes of underwater sealing and sound transmission of the transducer.
Further, the center rod 6 is integrally in a hollow cylindrical structure with two open ends;
one end of the watertight cable 8 sequentially penetrates through the inner cavities of the mounting seat 5 and the central rod 6 to be respectively connected with the positive electrode connecting wire 7 and the negative electrode connecting wire 7 on the second piezoelectric semispherical shell 2, and the other end of the watertight cable is also connected with an electric connector 12.
In the utility model, after the electric connector 12 is connected with external equipment, external signals are transmitted to the positive electrode and the negative electrode of the transducer through the electric connector 12.
Further, the central rod 6 is coaxially arranged with the mounting seat 5 and the opening of the second piezoelectric semispherical shell and the opening of the first piezoelectric semispherical shell.
In the utility model, as shown in fig. 9 and fig. 10, a piezoelectric spherical shell transducer is formed by a first piezoelectric hemispherical shell 1 with a material model of 'PZT-4' and a second piezoelectric hemispherical shell 2 with a material model of 'PZT-4D', and in a region of the first piezoelectric hemispherical shell 1 with a smaller piezoelectric strain constant, compared with a region of the second piezoelectric hemispherical shell 2, the maximum and minimum transmission voltage response difference values of the transducer in the whole space are about 1dB, so that the radiation sound field of the multi-type functional material combined type weak directivity spherical shell transducer provided by the embodiment is illustrated to be weak in space; wherein the transverse line between the areas of the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 in fig. 9 and 10 is a dividing line.
In summary, more specific embodiments of the present utility model are:
Before working, the weak directivity spherical shell transducer can be used by being hung under water or mounted on the underwater unmanned underwater vehicle 13. When the device is used for hanging, an operator connects the electric connector 12 with a connecting interface of the hanging device 14, the assembled weak directivity spherical shell transducer is directly hung under water through the hanging device 14, and the spherical shell transducer can receive and signal through the hanging device 14; when the underwater unmanned submersible vehicle 13 is used as a load, an operator connects the electric connector 12 with a connecting interface in the underwater unmanned submersible vehicle 13, then the operator connects the mounting seat 5 to be screwed on the mounting opening of the underwater unmanned submersible vehicle 13 into a whole, and the underwater unmanned submersible vehicle 13 can be used after entering water.
When the piezoelectric transducer works, based on the inverse piezoelectric effect of the piezoelectric material, when an alternating current electric field is applied between two poles of the piezoelectric element of the spherical shell transducer, the structure of the piezoelectric element generates mechanical vibration, and sound waves are radiated outwards through a medium which is coated on the spherical shell transducer, wherein the medium is water or air; the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are respectively made of materials with different piezoelectric strain constants, and the difference of the piezoelectric strain constant values of the materials of the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 has positive correlation influence relationship on the directivity of the spherical shell transducer, namely the larger the difference is, the more obvious the directivity is. The hemispherical bonding surface is used as an interface, and the piezoelectric hemispherical shell with a higher piezoelectric strain constant has higher transmission voltage response, the piezoelectric hemispherical shell with a lower piezoelectric strain constant has lower transmission voltage response, and the transmission responses of the spherical shell transducers at two sides of the interface have size difference, namely a weak directivity radiation sound pressure field is formed on any direction plane of the interface; the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are combined to realize the regulation and control of the directivity of the spherical shell transducer.
In the whole implementation operation process, the first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are respectively formed by materials with different piezoelectric strain constants, and a semispherical bonding surface is used as an interface, and as the piezoelectric semispherical shell with a higher piezoelectric strain constant has higher transmission voltage response, the piezoelectric semispherical shell with a lower piezoelectric strain constant has lower transmission voltage response, and the transmission responses of the spherical shell transducers at two sides of the interface have magnitude difference, namely a weak directive radiation sound pressure field is formed at any direction plane of the interface;
The first piezoelectric semispherical shell 1 and the second piezoelectric semispherical shell 2 are combined, and the directivity of the spherical shell transducer can be regulated and controlled.
The waterproof sound-transmitting layer 4 is a sound-transmitting rubber layer, sound-transmitting rubber is encapsulated outside the prestress layer 3 of the spherical shell transducer, and polyurethane sound-transmitting rubber is preferably selected as the sound-transmitting rubber material so as to achieve the purposes of underwater sealing and sound transmission of the transducer.
After the electrical connector 12 is connected with external equipment, external signals are transmitted to the positive electrode and the negative electrode of the transducer through the electrical connector 12.
Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the utility model in any way, and that those skilled in the art will be able to utilize the above-mentioned embodiments and modifications of the utility model as well as equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (10)
1. A multi-type functional material combined weak directivity spherical shell transducer, characterized in that it comprises:
the top of the first piezoelectric semispherical shell (1) is provided with a first piezoelectric semispherical shell opening;
The bottom of the second piezoelectric semispherical shell (2) is provided with a second piezoelectric semispherical shell through hole, and the second piezoelectric semispherical shell (2) and the first piezoelectric semispherical shell (1) are connected into a piezoelectric semispherical shell;
the prestress layer (3), the prestress layer (3) is set up in the outside of the ball shell of piezoelectricity;
The waterproof sound-transmitting layer (4), the waterproof sound-transmitting layer (4) is arranged outside the prestress layer (3), and one end of the waterproof sound-transmitting layer (4) is connected with the mounting seat (5);
the center rod (6), the center rod (6) is connected to the mounting seat (5) and is positioned on the opening of the first piezoelectric semispherical shell and the opening of the second piezoelectric semispherical shell;
The second piezoelectric semispherical shell (2) is connected with the watertight cable (8) through a connecting wire (7).
2. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein a front vibration isolator (9) is further connected to one side of the opening of the first piezoelectric semispherical shell;
One side of the second piezoelectric semispherical shell through hole is also connected with a rear vibration isolation pad (10);
The front vibration isolator (9) and the rear vibration isolator (10) are used for realizing positioning and installation between the piezoelectric spherical shell and the center rod (6), and the front vibration isolator (9) and the rear vibration isolator (10) also play a vibration isolation decoupling role.
3. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the connecting end of the mounting seat (5) and the waterproof sound-transmitting layer (4) is of a toothed annular groove structure; the outer wall of the non-connecting end of the mounting seat (5) is also provided with a thread structure and a sealing groove, and a sealing ring (11) is connected in the sealing groove.
4. A multi-type functional material combined type weak directivity spherical shell transducer according to claim 3, wherein the seal groove is provided above the screw structure;
the mounting seat (5) is made of a corrosion-resistant metal material, and the surface of the mounting seat is subjected to shot blasting.
5. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) are bonded to form a piezoelectric spherical shell, the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) are connected in parallel, and polarization directions are the same, and the piezoelectric spherical shell vibrates under the action of a variable voltage to radiate sound waves outwards.
6. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) are respectively made of materials with different piezoelectric strain constants, and the difference of the piezoelectric strain constant values of the materials of the first piezoelectric semispherical shell (1) and the second piezoelectric semispherical shell (2) has a positively correlated influence relationship on the directivity of the spherical shell transducer, namely the larger the difference is, the more obvious the directivity is; and vice versa.
7. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the pre-stressing layer (3) is formed by winding fibers on the outer surface of the piezoelectric spherical shell by pre-stressing equipment to apply pre-stressing, coating epoxy resin cementing agent on the surface of the piezoelectric spherical shell, and curing.
8. The multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the waterproof sound-transmitting layer (4) is formed into a spherical structure integrally provided with an opening at one end on the outer surface of the prestress layer (3) by sound-transmitting rubber seal, and a connecting part for connecting the mounting seat (5) is arranged at the opening in an outward extending manner.
9. A multi-type functional material combined type weak directivity spherical shell transducer according to claim 1, wherein the center rod (6) is integrally formed in a hollow cylindrical structure with two open ends;
One end of the watertight cable (8) sequentially penetrates through the inner cavities of the mounting seat (5) and the central rod (6) to be connected with the positive electrode connecting wire (7) and the negative electrode connecting wire (7) on the second piezoelectric semispherical shell (2) respectively, and the other end of the watertight cable is also connected with the electric connector (12).
10. A multi-type functional material combined weak directivity spherical shell transducer according to claim 1, characterized in that the central rod (6) is arranged coaxially with the mounting seat (5) and the second piezoelectric semispherical shell opening and the first piezoelectric semispherical shell opening.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322692628.XU CN220873252U (en) | 2023-10-08 | 2023-10-08 | Multi-type functional material combined weak directivity spherical shell transducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322692628.XU CN220873252U (en) | 2023-10-08 | 2023-10-08 | Multi-type functional material combined weak directivity spherical shell transducer |
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| CN220873252U true CN220873252U (en) | 2024-04-30 |
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| CN202322692628.XU Active CN220873252U (en) | 2023-10-08 | 2023-10-08 | Multi-type functional material combined weak directivity spherical shell transducer |
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