Vector hydrophone

Abstract

The utility model discloses a vector hydrophone, comprising a base plate provided with a first connecting part; the switching support is provided with a sensor chip, the switching support is installed on the base plate, the switching support is provided with a supporting plate, and the first side of the supporting plate abuts against the base plate; the sound transmission shell is provided with a sealing part, the sealing part is in sealing connection with the second side of the supporting plate, the sound transmission shell and the adapter bracket are matched to form a sealing cavity, and the sensor chip is located in the sealing cavity; the cover plate is connected with the sealing part in an abutting mode, the cover plate is provided with a second connecting part, and the first connecting part and the second connecting part are connected through a fastener. The vector hydrophone can solve the problem that an existing vector hydrophone is low in assembly efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrophones, in particular to a vector hydrophone. Background Art

[0002] Hydrophones are sensors that receive underwater sound waves and are widely used in underwater sonar equipment for underwater weapon guidance, underwater operational measurement, and offshore oil exploration. Hydrophones are categorized into scalar and vector hydrophones. Compared to scalar hydrophones, vector hydrophones can measure vector parameters in the sound field. Their application helps obtain vector information about the sound field and is crucial for expanding the functionality of sonar equipment. Traditional vector hydrophones are co-oscillating, which suffer from drawbacks such as large size and high cost. MEMS-based vector hydrophones have attracted attention due to their miniaturization and low cost. A vector hydrophone is an acoustic wave particle velocity sensor fabricated using MEMS technology and based on the micro-thermal flow principle. The micro-thermal flow sensing element consists of a deep trench structure and two closely spaced nanowires. The temperature difference between the two nanowires has a linear relationship with the perturbation acoustic wave signal. Because the two nanowires are electrical conductors, they require a certain level of insulation packaging for underwater acoustic signal detection. For the design and development of vector hydrophones, achieving reliable, watertight device packaging is undoubtedly one of the most critical process technologies. Existing vector hydrophones suffer from low assembly efficiency and high component processing precision requirements. Utility Model Content

[0003] The utility model provides a vector hydrophone, which can solve the problem of low assembly efficiency of the existing vector hydrophone.

[0004] In order to solve the above technical problems, the present invention provides a vector hydrophone, which is characterized by comprising:

[0005] a base plate, wherein a first connecting portion is provided on the base plate;

[0006] an adapter bracket, wherein a sensor chip is provided on the adapter bracket, the adapter bracket is mounted on the base plate, and the adapter bracket is provided with a support plate, wherein a first side of the support plate abuts against the base plate;

[0007] a sound-transmitting housing, the sound-transmitting housing being provided with a sealing portion, the sealing portion being sealedly connected to the second side of the support plate, the sound-transmitting housing and the adapter bracket cooperating to form a sealed cavity, the sensor chip being located in the sealed cavity;

[0008] A cover plate is in contact with the sealing portion, the cover plate is provided with a second connecting portion, and the first connecting portion and the second connecting portion are connected by a fastener.

[0009] As a preferred embodiment of the above technical solution, a sealing member is provided between the sealing portion and the support plate.

[0010] As a preferred embodiment of the above technical solution, an annular groove is formed on the second side of the support plate, and the sealing member is arranged in the annular groove.

[0011] As a preferred embodiment of the above technical solution, the sealing member is a sealing ring or a sealing gasket.

[0012] As a preferred embodiment of the above technical solution, the adapter bracket is an overall cylindrical structure, and the middle portion of the adapter bracket extends outward to form the support plate.

[0013] As a preferred embodiment of the above technical solution, the sound-permeable shell has an opening, and the opening of the sound-permeable shell extends outward to form the sealing portion.

[0014] As a preferred embodiment of the above technical solution, a first mounting hole is provided in the middle of the base plate, a second mounting hole is provided in the cover plate, the first end of the adapter bracket is inserted into the first mounting hole, the support plate is abutted against the base plate, the sound-transparent shell is inserted into the second mounting hole, and the sealing portion is abutted against the cover plate.

[0015] As a preferred embodiment of the above technical solution, the base plate is a polygonal plate structure, and the cover plate is a polygonal plate structure.

[0016] As a preferred embodiment of the above technical solution, the first connecting part is a first connecting hole, the second connecting part is a second connecting hole, the fastener passes through the first connecting hole and is threadedly connected to the second connecting hole, or the fastener passes through the second connecting hole and is threadedly connected to the first connecting hole.

[0017] As a preferred embodiment of the above technical solution, there are multiple first connection parts, and the multiple first connection parts are evenly distributed on the base plate around the first mounting hole; there are multiple second connection parts, and the multiple second connection parts are evenly distributed on the cover plate around the second mounting hole; the number and positions of the second connection parts correspond to the number and positions of the first connection parts.

[0018] The utility model provides a vector hydrophone, which is characterized in that it includes: a base plate, an adapter bracket, a sound-transparent shell and a cover plate; during assembly, a sensor chip is mounted on the adapter bracket and lead connections are made; a tooling and various components are placed in an oil medium and vacuum degassing is performed; after vacuum degassing, the base plate is placed in the tooling in the oil medium, and then the adapter bracket, the sound-transparent shell and the cover plate are assembled in sequence; the oil medium fills the sealed cavity; fasteners such as bolts are assembled to fix the cover plate and the base plate; after assembly, the device is taken out, the oil on the surface of the product is cleaned off, and glue is applied to the outside of the sealing contact surface between the sound-transparent shell and the adapter bracket; the packaging structure adopted by the utility model can first be fitted and assembled in the oil medium to achieve airtightness, and then fastened and assembled with bolts, and the final fastening assembly can be performed outside the oil bath environment, which greatly improves assembly efficiency and reduces assembly difficulty.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Fig. 1 This is a schematic structural diagram of a vector hydrophone in an embodiment of the present utility model;

[0021] Fig. 2 This is a schematic structural diagram of a vector hydrophone in an embodiment of the present utility model;

[0022] In the figure: 1. base plate; 2. adapter bracket; 3. sound-transmitting shell; 4. cover plate; 5. sealing member; 101. first connecting portion; 102. first mounting hole; 201. sensor chip; 202. support plate; 203. annular groove; 301. sealing portion; 401. second connecting portion; 402. second mounting hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0024] See also Figs. 1-2 The present invention provides a vector hydrophone, which is characterized by comprising:

[0025] A base plate 1, wherein a first connecting portion 101 is provided on the base plate 1;

[0026] An adapter bracket 2, on which a sensor chip 201 is provided, the adapter bracket 2 is mounted on the base plate 1, and the adapter bracket 2 is provided with a support plate 202, wherein a first side of the support plate 202 abuts against the base plate 1;

[0027] A sound-transmitting housing 3 is provided with a sealing portion 301, wherein the sealing portion 301 is sealedly connected to the second side of the support plate 202, and the sound-transmitting housing 3 and the adapter bracket 2 cooperate to form a sealed cavity, wherein the sensor chip 201 is located in the sealed cavity;

[0028] The cover plate 4 is in contact with the sealing portion 301 . The cover plate 4 is provided with a second connecting portion 401 . The first connecting portion 101 and the second connecting portion 401 are connected by a fastener.

[0029] The embodiment of the present utility model provides a vector hydrophone, which is characterized in that it includes: a base plate 1, an adapter bracket 2, a sound-transparent shell 3 and a cover plate 4; during assembly, the sensor chip 201 is installed on the adapter bracket 2 and the leads are connected; the tooling and various components are placed in an oil medium and vacuum degassed; after vacuum degassing, the base plate 1 is placed in the tooling in the oil medium, and then the adapter bracket 2, the sound-transparent shell 3 and the cover plate 4 are assembled in sequence; fasteners such as bolts are assembled to fix the cover plate 4 and the base plate 1; after assembly, the product is taken out, the oil on the surface of the product is cleaned off, and glue is applied to the outside of the sealing contact surface between the sound-transparent shell 3 and the adapter bracket 2; the packaging structure adopted by the present utility model can first be fitted and assembled in the oil medium to achieve airtightness, and then bolts are used for fastening and assembly. The final fastening and assembly can be carried out outside the oil bath environment, which greatly improves the assembly efficiency and reduces the assembly difficulty.

[0030] In a further embodiment of the present invention, a sealing member 5 is provided between the sealing portion 301 and the support plate 202 .

[0031] In this embodiment, a seal 5 is provided between the sealing portion 301 and the support plate 202. This seal 5 effectively improves the sealing performance between the acoustically transparent housing 3 and the support plate 202, reduces the possibility of medium leakage, and ensures the stability and reliability of the vector hydrophone. This ensures that the final tightening assembly can be performed outside the oil bath environment, preventing medium leakage, improving assembly efficiency, and reducing assembly difficulty.

[0032] In a further embodiment of the present invention, an annular groove 203 is formed on the second side of the support plate 202 , and the sealing member 5 is disposed in the annular groove 203 .

[0033] In this embodiment, an annular groove 203 is provided on the second side of the support plate 202, and the seal 5 is arranged in the annular groove 203, which can play a positioning effect, thereby improving assembly efficiency. In addition, during use, the seal 5 can be prevented from shifting due to medium pressure, further ensuring the stability of the sealing performance.

[0034] In a further embodiment of the present invention, the sealing member 5 is a sealing ring or a sealing gasket.

[0035] In this embodiment, the sealing member 5 is a sealing ring or a sealing gasket, which has a simple and reliable structure and is easy to install, thereby improving the convenience of assembly.

[0036] In a further possible implementation of this embodiment, the adapter bracket 2 is an overall cylindrical structure, and the middle portion of the adapter bracket 2 extends outward to form the support plate 202 .

[0037] In this embodiment, the adapter bracket 2 is an overall cylindrical structure, a sensor chip 201 is provided on the top of the adapter bracket 2, and the adapter bracket 2 is hollow and used for leading out the signal line of the sensor chip 201. The signal line is sealed with epoxy glue after being led out.

[0038] In a further possible implementation of this embodiment, the sound-permeable shell 3 has an opening, and the opening of the sound-permeable shell 3 extends outward to form the sealing portion 301 .

[0039] In this embodiment, the sound-permeable housing 3 is a hollow cylinder with a hemispherical top. The bottom of the sound-permeable housing 3 has an opening, which extends outward to form the sealing portion 301, facilitating a sealed connection with the sealing member 5, thereby achieving a sealed connection with the support plate 202. The extended structure forming the sealing portion 301 utilizes an integrated molding process, ensuring structural integrity. This design enables the entire device to maintain excellent sealing performance even in extreme environments, further enhancing the device's durability and reliability under complex conditions.

[0040] In a further feasible embodiment of the present invention, a first mounting hole 102 is provided in the middle of the base plate 1, a second mounting hole 402 is provided in the cover plate 4, the first end of the adapter bracket 2 is inserted into the first mounting hole 102, the support plate 202 is abutted against the base plate 1, the sound-transparent shell 3 is inserted into the second mounting hole 402, and the sealing portion 301 is abutted against the cover plate 4.

[0041] In this embodiment, the first end of the adapter bracket 2 is inserted into the first mounting hole 102, and the support plate 202 abuts against the base plate 1. The first mounting hole 102 can play a positioning effect and also facilitates the signal line of the sensor chip 201 to be led out from the first end of the adapter bracket 2; the sound-transmitting shell 3 is inserted into the second mounting hole 402, and the sealing portion 301 abuts against the cover plate 4, which can prevent the cover plate 4 from covering the sound-transmitting shell 3, thereby avoiding affecting the detection effect of the sound-transmitting shell 3 and ensuring the detection accuracy.

[0042] In a further possible implementation of this embodiment, the base plate 1 is a polygonal plate structure, and the cover plate 4 is a polygonal plate structure.

[0043] In this embodiment, the base plate 1 is a polygonal plate structure, and the shape and size of the cover plate 4 correspond to the shape and size of the base plate 1. The design of the polygonal plate structure enables better positioning of the base plate 1 when it is placed in the tooling, and facilitates circumferential fixation, further improving assembly efficiency.

[0044] In a further embodiment of the present invention, the first connection portion 101 is a first connection hole, the second connection portion 401 is a second connection hole, the fastener passes through the first connection hole and is threadedly connected to the second connection hole, or the fastener passes through the second connection hole and is threadedly connected to the first connection hole.

[0045] In this embodiment, both the first and second connection holes are threaded holes, and the fastener has two assembly methods: one is to pass through the base plate 1 and threadedly connect to the second connection hole on the cover plate 4, and the other is to pass through the cover plate 4 and threadedly connect to the first connection hole on the base plate 1. This has a simple structure and is easy to operate, further improving assembly efficiency.

[0046] In a further embodiment of the present invention, there are multiple first connection parts 101, and the multiple first connection parts 101 are evenly distributed on the base plate 1 around the first mounting hole 102; there are multiple second connection parts 401, and the multiple second connection parts 401 are evenly distributed on the cover plate 4 around the second mounting hole 402; the number and position of the second connection parts 401 correspond to the number and position of the first connection parts 101.

[0047] In this embodiment, multiple first connecting parts 101 are evenly distributed on the base plate 1 around the first mounting hole 102, and multiple second connecting parts 401 are evenly distributed on the cover plate 4 around the second mounting hole 402. After being assembled by the fasteners, the stability and balance of the overall structure are ensured, and at the same time, the fasteners apply force evenly in multiple directions, thereby enhancing the firmness of the connection.

[0048] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A vector hydrophone, characterized in that: include: a base plate, wherein a first connecting portion is provided on the base plate; An adapter bracket, wherein a sensor chip is provided on the adapter bracket, the adapter bracket is mounted on the base plate, and the adapter bracket is provided with a support plate, wherein a first side of the support plate abuts against the base plate; a sound-transmitting housing, the sound-transmitting housing being provided with a sealing portion, the sealing portion being sealedly connected to the second side of the support plate, the sound-transmitting housing and the adapter bracket cooperating to form a sealed cavity, the sensor chip being located in the sealed cavity; The cover plate is in contact with the sealing portion, and the cover plate is provided with a second connecting portion, wherein the first connecting portion and the second connecting portion are connected by a fastener.

2. The vector hydrophone according to claim 1, characterized in that A sealing member is provided between the sealing portion and the supporting plate.

3. The vector hydrophone according to claim 2, characterized in that An annular groove is formed on the second side of the support plate, and the sealing member is arranged in the annular groove.

4. The vector hydrophone according to claim 3, characterized in that The sealing member is a sealing ring or a sealing gasket.

5. The vector hydrophone according to claim 1, characterized in that The adapter bracket is in a cylindrical structure as a whole, and the middle part of the adapter bracket extends outward to form the support plate.

6. The vector hydrophone according to claim 5, characterized in that The sound-transmitting shell has an opening, and the opening of the sound-transmitting shell extends outward to form the sealing portion.

7. The vector hydrophone according to claim 6, characterized in that A first mounting hole is provided in the middle of the base plate, a second mounting hole is provided in the cover plate, the first end of the adapter bracket is inserted into the first mounting hole, the support plate abuts against the base plate, the sound-transparent shell is inserted into the second mounting hole, and the sealing portion abuts against the cover plate.

8. The vector hydrophone according to claim 1, characterized in that The base plate is a polygonal plate structure, and the cover plate is a polygonal plate structure.

9. The vector hydrophone according to claim 1, characterized in that The first connection portion is a first connection hole, the second connection portion is a second connection hole, the fastener passes through the first connection hole and is threadedly connected to the second connection hole, or the fastener passes through the second connection hole and is threadedly connected to the first connection hole.

10. The vector hydrophone according to claim 7, characterized in that There are multiple first connection parts, and the multiple first connection parts are evenly distributed on the base plate around the first mounting hole. There are multiple second connection parts, and the multiple second connection parts are evenly distributed on the cover plate around the second mounting hole. The number and position of the second connection parts correspond to the number and position of the first connection parts.

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