A small deep water transducer structure that is adaptive to water depth and temperature changes

Abstract

The utility model belongs to underwater acoustic transducer technical field, especially relate to a small -size deep -water transducer structure of self -adaptation water depth and temperature change. Include: the shell, its inside has two split connected installation cavity one and installation cavity two, acoustic component and part, the installation cavity one inside is equipped with the acoustic component and part axially, and is connected on the shell through polyurethane layer, the other end of acoustic component and part is equipped with backing layer, dynamic sealing structure, the installation cavity two inside has the dynamic sealing structure sealed axially sliding, and the other end of shell is equipped with the head to realize the sealing, the head is evenly provided with the water -permeable hole on, filter membrane, filter membrane is pressed between the shell and the head, the utility model transducer structure can adapt to the change of water depth and temperature, not only satisfies the underwater great depth work requirement, also solves the situation that the volume change of silicone oil is affected by temperature leads to the unstable situation of transducer structure, reaches the demand of simple structure and economic and suitable.

Description

Technical Field

[0001] This utility model belongs to the field of underwater acoustic transducer technology, and specifically relates to a small deep-water transducer structure that adapts to changes in water depth and temperature. Background Technology

[0002] With the deepening development of marine resources and the rapid advancement of naval warfare, the scope of human activities in the ocean is expanding, and ocean-related detection technologies are receiving increasing attention. Sonar technology, as a major technology for ocean detection, has developed rapidly and has been widely applied in fields such as military submarines, offshore oil exploration, and seabed topographic surveying.

[0003] In deep water environments, the transducer's overall structure faces significant water pressure. To ensure stable operation of the transducer under deep water conditions, the overall structure needs to be designed to withstand pressure. Common methods include: ① using a higher strength material for the transducer shell; ② keeping the original material unchanged but increasing the wall thickness of the transducer shell; ③ filling the transducer structure with oil to maintain pressure balance inside and outside the transducer.

[0004] The specific method used depends on the specific circumstances of the product. Current technology involves designing a small, deep-water transducer based on an internal oil-filling method. The structural principle of an oil-filled transducer is to fill all the internal space of the transducer with an oily liquid. Due to the incompressibility of the liquid, the pressure inside and outside the transducer becomes uniform under water pressure conditions, thus allowing for a lighter and more economical transducer shell structure.

[0005] However, since the actual use and storage environment of transducers is often between zero and tens of degrees Celsius, the oily liquid inside follows the principle of thermal expansion and contraction. Under temperature changes, the volume of the oily liquid inside will increase or decrease. An increase in volume will cause damage to the radiation surface of the transducer, while a decrease in volume will cause structural damage to the transducer under external water pressure. To avoid this situation, an oil bladder structure is usually used, which utilizes the flexibility of the oil bladder material to adjust the internal volume of the transducer.

[0006] However, for small-volume deep-water transducers, installing an oil bladder structure will increase the overall size, and the oil bladder needs to be made with custom-made tooling molds, and a metal protective cover is also required to prevent damage to the oil bladder. Therefore, based on the above defects, this utility model designs a transducer with a simple structure and economic applicability to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a small deep-water transducer structure that adapts to changes in water depth and temperature. This transducer structure can adapt to the continuous changes in water depth and temperature, which not only meets the requirements for deep underwater operation, but also solves the problem of instability in the transducer structure caused by the volume change of silicone oil due to temperature. This achieves the requirements of simple structure and economic applicability.

[0008] To address the aforementioned technical problems, this utility model provides a small deep-water transducer structure that adapts to changes in water depth and temperature, comprising:

[0009] The outer casing has two separate and interconnected mounting cavities, namely mounting cavity one and mounting cavity two.

[0010] An acoustic component is axially disposed within the mounting cavity and connected to the outer shell via a polyurethane layer; a backing layer is provided at the other end of the acoustic component.

[0011] The dynamic sealing structure is axially slidingly sealed in the second mounting cavity, and the other end of the outer shell is provided with a sealing head to achieve sealing. Water permeable holes are evenly opened on the sealing head.

[0012] A filter membrane is pressed between the outer shell and the end cap. Water from the external water body enters the mounting cavity two on the right side of the dynamic sealing structure after passing through the water-permeable holes and the filter membrane.

[0013] Silicone oil is used to fill the first mounting cavity and the second mounting cavity on the left side of the dynamic sealing structure.

[0014] Preferably, the outer shell includes: a housing and a partition plate; the partition plate is integrally formed on the inner wall of the housing, and the partition plate has a connecting hole.

[0015] Preferably, the outer casing is made of a non-metallic material.

[0016] Preferably, the acoustic components are bonded to the backing layer by adhesive bonding, and the surface of the acoustic components is encapsulated on the inner wall of the housing by the polyurethane layer to ensure water tightness.

[0017] Preferably, the dynamic sealing structure includes: a piston, a plug, a first sealing ring, and a second sealing ring; the piston slides axially within the second mounting cavity, and the first sealing ring is embedded in the outer diameter wall of the piston, thereby achieving dynamic sealing performance between the piston and the outer shell; the plug is screwed into the axial hole of the piston, and the second sealing ring is embedded in the outer diameter wall of the plug, thereby achieving sealing performance between the plug and the axial hole.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] This invention's structure is applicable to a wide range of water depths and maintains structural stability even in environments with significant temperature differences. In other words, the transducer structure adapts to continuous changes in water depth and temperature, meeting the requirements for deep underwater operation while resolving the issue of transducer instability caused by temperature-induced volume changes in silicone oil. Compared to traditional structures, the outer shell can be made of inexpensive, low-cost non-metallic materials, eliminating the need for specialized molds and tooling for oil bladder fabrication and requiring no additional oil bladder protective cover. The overall structure is compact and elegant, with most parts being simply machined or standard purchased components, making it economical, practical, and easy to replace. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of a small deep-water transducer structure that adapts to changes in water depth and temperature according to this utility model.

[0021] In the diagram: 1-Outer shell, 11-Mounting cavity one, 12-Mounting cavity two, 2-Acoustic components, 3-Polyurethane layer, 4-Backing layer, 5-Dynamic sealing structure, 51-Piston, 52-Plug, 53-Sealing ring one, 54-Sealing ring two, 6-End cap, 61-Water permeable hole, 7-Filter membrane, 8-Silicone oil, 9-Water body, 10-External water area. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0023] like Figure 1 As shown, this utility model embodiment specifically provides a small deep-water transducer structure that adapts to changes in water depth and temperature, including:

[0024] The outer casing 1 has two separate and interconnected mounting cavities 11 and 12 inside;

[0025] Acoustic component 2 is axially arranged in the mounting cavity 11 and connected to the outer shell 1 through polyurethane layer 3. The other end of the acoustic component 2 is provided with backing layer 4.

[0026] The dynamic sealing structure 5 is provided in the axial sliding seal of the mounting cavity 12, and the other end of the outer shell 1 is provided with a sealing head 6 to achieve sealing. Water permeable holes 61 are evenly opened on the sealing head 6.

[0027] The filter membrane 7 is pressed between the outer shell 1 and the end cap 6. The water 9 of the external water area 10 enters the mounting cavity 12 on the right side of the dynamic sealing structure 5 after passing through the water permeable hole 61 and the filter membrane 7.

[0028] Silicone oil 8 is filled in the mounting cavity 11 and the mounting cavity 2 12 on the left side of the dynamic sealing structure 5.

[0029] The outer casing 1 includes: a shell and a partition plate; the partition plate is integrally formed on the inner wall of the shell, and the partition plate has a connecting hole.

[0030] The outer casing 1 is made of non-metallic material.

[0031] The acoustic component 2 is bonded to the backing layer 4 by adhesive bonding. The surface of the acoustic component 2 is encapsulated on the inner wall of the outer shell 1 by a polyurethane layer 3 to ensure water tightness.

[0032] The dynamic sealing structure 5 includes: piston 51, plug 52, sealing ring 1 53 and sealing ring 2 54; piston 51 slides axially in mounting cavity 2 12, sealing ring 1 53 is embedded on the outer diameter wall of piston 51, and dynamic sealing performance between piston 51 and outer shell 1 is achieved by sealing ring 1 53; plug 52 is screwed into the axial hole of piston 51, sealing ring 2 54 is embedded on the outer diameter wall of plug 52, and sealing performance between plug 2 54 and axial hole is achieved by sealing ring 2 54.

[0033] It also includes the following working principles:

[0034] The transducer is internally filled with silicone oil 8, with an oil pressure of P1, and the external water body 9 pressure of the water body 10 is set to P2. When the temperature rises, the silicone oil 8 expands, the pressure of P1 increases, and the piston 51 moves to the right. When P1 = P2, the movement stops, and the structure returns to equilibrium. Conversely, when the temperature falls, the silicone oil 8 shrinks, the pressure of P1 decreases, and the piston 51 moves to the left. When P1 = P2, the movement stops, and the structure returns to equilibrium.

[0035] As the water depth increases, the pressure in the outer water area 10 increases, the pressure P2 increases, and the piston 51 moves to the left. When P1 = P2, it stops moving, and the structure returns to equilibrium. Conversely, as the water depth decreases, the pressure P2 decreases, and the piston 51 moves to the right. When P1 = P2, it stops moving, and the structure returns to equilibrium.

[0036] The aforementioned transducer structure can adapt to the continuous changes in water depth and temperature, which not only meets the requirements for deep underwater operation, but also solves the problem of transducer structure instability caused by the volume change of silicone oil due to temperature.

[0037] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A small deep-water transducer structure that adapts to changes in water depth and temperature, characterized in that, include: The outer shell (1) has two separate and connected mounting cavities, namely, mounting cavity one (11) and mounting cavity two (12); Acoustic component (2), the acoustic component (2) is axially arranged in the mounting cavity (11) and connected to the outer shell (1) through a polyurethane layer (3), and the other end of the acoustic component (2) is provided with a backing layer (4); The dynamic sealing structure (5) is axially slidingly sealed in the second mounting cavity (12), and the other end of the outer shell (1) is provided with a sealing head (6) to achieve sealing. Water permeable holes (61) are evenly opened on the sealing head (6). The filter membrane (7) is pressed between the outer shell (1) and the end cap (6). The water (9) of the external water area (10) enters the second mounting cavity (12) on the right side of the dynamic sealing structure (5) after passing through the water permeable hole (61) and the filter membrane (7). Silicone oil (8) is filled in the first mounting cavity (11) and the second mounting cavity (12) on the left side of the dynamic sealing structure (5).

2. The small deep-water transducer structure adapting to changes in water depth and temperature as described in claim 1, characterized in that, The outer shell (1) includes: a shell and a partition plate; the partition plate is integrally formed on the inner wall of the shell, and a connecting hole is provided on the partition plate.

3. The small deep-water transducer structure adapting to changes in water depth and temperature as described in claim 1, characterized in that, The outer shell (1) is made of non-metallic material.

4. The small deep-water transducer structure adapting to changes in water depth and temperature as described in claim 1, characterized in that, The acoustic component (2) is bonded to the backing layer (4) by adhesive bonding. The surface of the acoustic component (2) is encapsulated on the inner wall of the outer shell (1) by the polyurethane layer (3) to ensure water tightness.

5. The small deep-water transducer structure adapting to changes in water depth and temperature as described in claim 1, characterized in that, The dynamic sealing structure (5) includes: a piston (51), a plug (52), a first sealing ring (53), and a second sealing ring (54); the piston (51) slides axially in the second mounting cavity (12), the first sealing ring (53) is embedded on the outer diameter wall of the piston (51), and the dynamic sealing performance between the first sealing ring (53) and the outer shell (1) is achieved through the first sealing ring (53); the plug (52) is screwed into the axial hole of the piston (51), and the second sealing ring (54) is embedded on the outer diameter wall of the plug (52), and the sealing performance between the second sealing ring (54) and the axial hole is achieved through the second sealing ring (54).

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