An adaptive water depth high-power low-frequency electric transducer

Abstract

The application relates to a self-adaptive water-depth high-power low-frequency electric transducer, which comprises a shell, a pressure balance mechanism, a vibrating mechanism and a piston; an air chamber is formed between the shell and the vibrating mechanism, and the working water depth of the transducer can be improved by pressurizing the air chamber; the pressure balance mechanism penetrates through the shell and is in sealed connection with the shell, the parts of the pressure balance mechanism located at both ends of the shell are subjected to equal external pressure to balance the external pressure; the vibrating mechanism is arranged in the shell and is connected with the pressure balance mechanism; the piston is arranged outside the shell, and the piston is connected with the vibrating mechanism through the pressure balance mechanism, and the piston can vibrate with the vibrating mechanism to transmit sound waves. The transducer is arranged by penetrating the shell through the pressure balance mechanism, when the transducer works, the two ends of the pressure balance mechanism are simultaneously subjected to water pressure, the pressure balance mechanism can automatically balance the influence of the water pressure on the transducer, and the additional resistance brought by the operation of other structures in the transducer under the underwater pressure is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underwater acoustic technology, and particularly relates to a self-adaptive water depth high-power low-frequency electric transducer. BACKGROUND

[0002] The underwater acoustic transducer is a device for converting certain energy into underwater acoustic energy, and the technical level thereof will directly determine the detection, countermeasure and communication effects of underwater acoustic equipment. The electric transducer is a moving coil type low-frequency transducer, which uses the Ampere force between electric current and magnetic field as the excitation source, and has the characteristics of small size, wide working frequency band and low working frequency.

[0003] The current electric transducer connects the piston and the shell through a flexible structure to form a sealed structure, and the inside is a gas chamber. The entire vibration system except the piston, such as the magnet, coil and transmission shaft, is located in the gas chamber. Therefore, when the transducer works at different water depths, the pressure in the gas chamber and the outside must be balanced through active or passive pressure compensation devices, and the working depth is generally within 200 meters.

[0004] Therefore, there is an urgent need for an electric transducer that can automatically adapt to the water depth when working at different water depths. SUMMARY

[0005] (I) Technical problem to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a self-adaptive water depth high-power low-frequency electric transducer, which solves the technical problems that the external pressure has a great influence on the internal structure of the existing electric transducer when working, and the internal and external pressure balance is inconvenient to adjust.

[0007] (II) Technical scheme

[0008] In order to achieve the above-mentioned purpose, the self-adaptive water depth high-power low-frequency electric transducer of the present application comprises a shell, a pressure balance mechanism, a vibration mechanism and a piston.

[0009] The shell and the vibration mechanism form a gas chamber therebetween, and the pressurization in the gas chamber can improve the working water depth of the transducer.

[0010] The pressure balance mechanism penetrates through the shell and is sealingly connected with the shell, and the parts of the pressure balance mechanism located at both ends of the shell are subjected to equal external pressure to balance the external pressure.

[0011] The vibration mechanism is arranged in the shell and connected with the pressure balance mechanism.

[0012] The piston is arranged outside the shell, and the piston is connected with the vibration mechanism through the pressure balance mechanism, and the piston can vibrate with the vibration mechanism to transmit acoustic waves.

[0013] Optionally, the pressure balance mechanism comprises a first transmission shaft and a second transmission shaft;

[0014] A first end of the first transmission shaft is connected to the piston through the shell, and a second end of the first transmission shaft is connected to the vibration mechanism;

[0015] A first end of the second transmission shaft is connected to the vibration mechanism, and a second end of the second transmission shaft extends to the outside through the shell;

[0016] The first transmission shaft and the second transmission shaft are connected through the vibration mechanism, and an axial pressure of the first end of the first transmission shaft is equal to an axial pressure of the second end of the second transmission shaft.

[0017] Optionally, the first transmission shaft and the second transmission shaft are both sealedly connected to the shell through sealing rings.

[0018] Optionally, the shell comprises an upper end cover, a lower end cover and a side plate;

[0019] The upper end cover and the lower end cover are both connected to the side plate, and both the upper end cover and the lower end cover are provided with mounting holes, the sealing rings are arranged in the mounting holes, the upper end cover is sealedly connected to the first transmission shaft through the sealing ring, and the lower end cover is sealedly connected to the second transmission shaft through the sealing ring.

[0020] Optionally, the vibration mechanism comprises a magnetic cylinder and a wire frame.

[0021] The magnetic cylinder is arranged in the shell, a magnetic gap is arranged in the magnetic cylinder, one end of the wire frame is arranged in the magnetic gap, and the other end of the wire frame is connected to the pressure balance mechanism.

[0022] Optionally, the wire frame comprises a mounting bracket and a coil, the coil is arranged at a first end of the mounting bracket, the first end of the mounting bracket is arranged in the magnetic gap, and a second end of the mounting bracket is connected to the pressure balance mechanism.

[0023] Optionally, the self-adapting water depth high-power low-frequency electric transducer further comprises a vibration isolation air bag.

[0024] The vibration isolation air bag is arranged between the piston and the shell, the vibration isolation air bag is arranged on one side of the piston or the vibration isolation air bag is arranged on both sides of the piston.

[0025] The vibration isolation air bag is arranged on one side of the piston, the piston vibrates, the vibration isolation air bag vibrates with the piston, and the side of the piston without the vibration isolation air bag can generate omnidirectional sound waves.

[0026] The two sides of the piston are not provided with the vibration isolation air bag, the piston vibrates, and the two sides of the piston without the vibration isolation air bag generate directional sound waves.

[0027] Optionally, the shell is further provided with a positioning plate, the positioning plate is fixedly arranged in the shell, and the positioning plate is connected with the vibration mechanism.

[0028] Optionally, the self-adapting water depth high-power low-frequency electric transducer further comprises a ring-shaped barrier plate and a protection plate.

[0029] One end of the ring-shaped barrier plate is connected with the shell, the other end of the ring-shaped barrier plate is connected with the protection plate, and the piston is located between the ring-shaped barrier plate and the protection plate to protect the piston.

[0030] The application further provides a use method of the self-adapting water depth high-power low-frequency electric transducer, and the use method is based on the self-adapting water depth high-power low-frequency electric transducer and comprises the following steps.

[0031] The end of the first transmission shaft and the end of the second transmission shaft of the electric transducer are in water, the ends of the first transmission shaft and the second transmission shaft are subjected to equal and opposite axial pressures, and the vibration mechanism is not affected by external pressure.

[0032] The air chamber of the electric transducer is not pressurized, and the working water pressure of the electric transducer does not exceed the limit working pressure of the sealing ring.

[0033] The pressure in the air chamber of the electric transducer is increased to the limit working pressure of the sealing ring, and the working water pressure of the electric transducer does not exceed twice the limit working pressure of the sealing ring.

[0034] (III) Beneficial effects

[0035] The application provides a self-adapting water depth high-power low-frequency electric transducer, which is provided with a pressure balance mechanism penetrating through a shell, when the transducer works underwater, the two ends of the pressure balance mechanism are subjected to equal and opposite axial pressures, the pressure balance mechanism can automatically balance the influence of water pressure on the transducer, and additional resistance caused by underwater pressure on the operation of other structures in the transducer is avoided. Moreover, since the working limit of the transducer is determined by the working pressure limit of the sealing connector between the pressure balance mechanism and the shell, the maximum working water depth of the transducer can be effectively increased by pre-filling high-pressure gas in the air chamber of the transducer. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a whole structure schematic view of the self-adapting water depth high-power low-frequency electric transducer.

[0037] REFERENCE SIGNS

[0038] 1: piston; 2: coil; 3: magnetic cylinder; 31: magnetic gap; 4: air chamber; 5: housing; 6: lower end cover; 71: first transmission shaft; 72: second transmission shaft; 8: positioning plate; 9: sealing ring; 10: upper end cover; 11: vibration isolation air bag; 12: annular baffle; 13: protection plate. DETAILED DESCRIPTION

[0039] In order to better explain the present application, so as to be understood, the following specific embodiments will be described in detail in combination with the drawings. In this article, the orientation of "upper", "lower" and the like is referred to the orientation of the drawings. Figure 1

[0040] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a clearer, more thorough understanding of the present application and to enable the scope of the present application to be fully conveyed to those skilled in the art.

[0041] The conventional electrodynamic transducer connects the piston and the housing through a flexible structure to form a sealed structure, and the inside is an air chamber. The entire vibration system except the piston, such as the magnet, coil, transmission shaft, etc., is located in the air chamber, which causes the transducer to work at different water depths. The pressure in the air chamber must be balanced with the outside pressure through active or passive pressure compensation devices. For example, the electrodynamic transducer UW350 of the American company DiFi. When the working water depth increases, the pressure regulating air bag is compressed, the gas in the air chamber is compressed, the pressure rises to the same pressure as the outside water pressure, so that the air chamber pressure and the outside water pressure are balanced. When the gas in the air chamber reaches the compression limit, the pressure regulating air bag is compressed to adhere to the lower surface of the magnetic cylinder. At this time, the volume of the gas in the air chamber is the minimum volume. The ratio of the minimum volume of the gas in the air chamber to the initial state of the air chamber is the compression ratio, which determines the maximum working water depth of the conventional electrodynamic transducer. To increase the maximum working water depth of the electrodynamic transducer, the compression ratio of the gas volume in the air chamber must be reduced, i.e. the minimum volume of the gas in the air chamber must be reduced or the initial state of the gas volume in the air chamber must be increased. Because the magnetic cylinder, coil and support and adjustment mechanism of the vibration system and other auxiliary mechanisms are relatively complex, it is difficult to reduce the minimum volume of the gas in the air chamber, and increasing the initial state of the gas volume in the air chamber will result in an increase in the volume and weight of the transducer.

[0042] As Figure 1 ​As shown, the application provides a self-adapting water depth high-power low-frequency electric transducer, which comprises a shell 5, a pressure balance mechanism and a vibrating mechanism, and a piston 1. An air chamber 4 is formed between the shell 5 and the vibrating mechanism, and the air chamber 4 is pressurized to improve the working water depth of the transducer. The pressure balance mechanism penetrates through the shell 5 and is sealingly connected with the shell 5, and the parts of the pressure balance mechanism located at both ends of the shell 5 are subjected to equal external pressure to balance the external pressure. The vibrating mechanism is arranged in the shell 5 and is connected with the pressure balance mechanism. The piston 1 is arranged outside the shell 5 and is connected with the vibrating mechanism through the pressure balance mechanism, and the piston 1 can vibrate with the vibrating mechanism to transmit sound waves.

[0043] In this embodiment, the pressure balance mechanism penetrates through the shell 5, and when the transducer works underwater, the two ends of the pressure balance mechanism are simultaneously subjected to axial pressure in water, and the axial pressure at the two ends of the pressure balance mechanism is opposite in direction and equal in size. Thus, the pressure balance mechanism automatically balances the influence of water pressure on the transducer, and avoids the additional resistance caused by the underwater pressure to the operation of other structures in the transducer. Therefore, when the transducer works, it only needs to ensure that the sealing structure in the transducer does not fail to ensure the stable work of the transducer, that is, the working limit of the transducer is determined by the working pressure limit of the sealing connector between the pressure balance mechanism and the shell 5. When the transducer starts to work, the vibrating mechanism is loaded with alternating current, the vibrating mechanism vibrates to drive the pressure balance mechanism connected therewith to vibrate, the pressure balance mechanism drives the piston 1 to vibrate, and the piston 1 vibrates to transmit into water, thereby converting electric energy into underwater acoustic energy, and the frequency of the sound wave is the same as the frequency of the loaded alternating current. Therefore, the transducer does not need to additionally set an air bag inside to adjust the internal and external pressure balance, thereby saving the internal space of the transducer, making the structure of the transducer more compact, the weight smaller, and the user more convenient to use.

[0044] Referring to Figure 1 The pressure balance mechanism comprises a first transmission shaft 71 and a second transmission shaft 72. The first end of the first transmission shaft 71 penetrates through the shell 5 to connect the piston 1, and the second end of the first transmission shaft 71 is connected with the vibrating mechanism. The first end of the second transmission shaft 72 is connected with the vibrating mechanism, and the second end of the second transmission shaft 72 penetrates through the shell 5 to the outside. The first transmission shaft 71 and the second transmission shaft 72 are connected through the pressure balance mechanism, and the axial pressure at the first end of the first transmission shaft 71 is equal to the axial pressure at the second end of the second transmission shaft 72. The first transmission shaft 71 and the second transmission shaft 72 are sealingly connected with the shell 5 through sealing rings 9. The shell 5 comprises an upper end cover 10, a lower end cover 6 and a side plate. The upper end cover 10 and the lower end cover 6 are connected with the side plate, and the upper end cover 10 and the lower end cover 6 are both provided with mounting holes. The sealing rings 9 are arranged in the mounting holes. The upper end cover 10 is sealingly connected with the first transmission shaft 71 through the sealing ring 9, and the lower end cover 6 is sealingly connected with the second transmission shaft 72 through the sealing ring 9.

[0045] In this embodiment, the first transmission shaft 71 connects the piston 1 through the upper end cover 10, and the second end of the second transmission shaft 72 extends to the outside through the lower end cover 6. Both the first transmission shaft 71 and the second transmission shaft 72 have one end in the environment outside the shell 5. The first transmission shaft 71 and the second transmission shaft 72 automatically balance the influence of water pressure on the vibration system. The underwater pressure does not introduce additional resistance to the vibration mechanism. The first transmission shaft 71 and the second transmission shaft 72 are respectively sealed and connected with the upper end cover 10 and the lower end cover 6 through the sealing ring 9. The maximum water depth for the operation of the transducer is determined by the sealing limit of the sealing ring 9 between the transmission shaft, the upper end cover 10 and the lower end cover 6. When the pressure difference between the air chamber 4 and the outside exceeds the working pressure limit of the sealing ring 9, the sealing function is invalid. Therefore, the water depth corresponding to the working pressure limit of the sealing ring 9 is the maximum water depth for the operation of the transducer. In this embodiment, the sealing ring 9 is preferably an O-shaped sealing ring 9. When the pressure increases and does not exceed the sealing limit, the sealing performance of the O-shaped sealing ring 9 increases with the increase of the pressure.

[0046] As shown in Figure 1 , the vibration mechanism includes a magnetic cylinder 3 and a wire frame. The magnetic cylinder 3 is arranged in the shell 5, and a magnetic gap 31 is formed in the magnetic cylinder 3. One end of the wire frame is arranged in the magnetic gap 31, and the other end of the wire frame is connected with the pressure balance mechanism. The wire frame includes a mounting bracket and a coil 2. The coil 2 is wound around the first end of the mounting bracket, and the first end of the mounting bracket is located in the magnetic gap 31. The second end of the mounting bracket is connected with the pressure balance mechanism.

[0047] In this embodiment, one end of the wire frame is arranged in the magnetic gap 31, and the other end of the wire frame is fixedly connected with the pressure balance mechanism. When the coil 2 wound around the wire frame is loaded with alternating current, the wire frame is subjected to Lorentz force of the same frequency as the alternating current under the action of the magnetic field force of the magnetic cylinder 3. The wire frame drives the piston 1 to vibrate through the transmission shaft.

[0048] Referring to Figure 1 , the self-adapting water depth high-power low-frequency electric transducer further includes a vibration isolation air bag 11. The vibration isolation air bag 11 is arranged between the piston 1 and the shell 5. The vibration isolation air bag 11 is arranged on one side of the piston 1 or on both sides of the piston 1. When the vibration isolation air bag 11 is arranged on one side of the piston 1, the piston 1 vibrates, and the vibration isolation air bag 11 vibrates with the piston 1. The side of the piston 1 without the vibration isolation air bag 11 can generate omnidirectional sound waves. When the piston 1 vibrates, the piston 1 drives the air in the vibration isolation air bag 11 on one side and the water on the other side to vibrate. Because the compressibility of air is larger, the vibration of the air will not be transmitted to the water on the other side. The piston 1 drives the water on the other side to vibrate, and radiates omnidirectional sound waves of the same frequency into the water.

[0049] The piston 1 is not provided with the vibration isolation air bag 11 on both sides, the piston 1 vibrates, and the piston 1 generates directional sound waves on both sides where the vibration isolation air bag 11 is not arranged. The vibration of the piston 1 drives the water on both sides of the piston 1 to vibrate simultaneously, which is equivalent to having a vibration source on both sides of the piston 1, and the vibration of the two vibration sources has a phase difference of 180 degrees, which is equivalent to a dipole sound source. The sound field generated by the transducer has a certain directivity.

[0050] As shown in Figure 1 The shell 5 is also provided with a positioning plate 8, the positioning plate 8 is fixedly arranged in the shell 5, and the positioning plate 8 is connected with the vibration mechanism. The self-adapting water depth high-power low-frequency electric transducer further comprises a ring-shaped barrier plate 12 and a protection plate 13; one end of the ring-shaped barrier plate 12 is connected with the shell 5, the other end of the ring-shaped barrier plate 12 is connected with the protection plate 13, and the piston 1 is located between the ring-shaped barrier plate 12 and the protection plate 13 to protect the piston 1.

[0051] In the embodiment, the positioning plate 8 is arranged, which helps to fix the position of the wire frame, forms a standard, thereby simplifying the subsequent processing process, reducing measurement and processing errors, improving work efficiency, and fixing the position of the wire frame to prevent the wire frame from being skewed during use. And, the protection plate 13 and the ring-shaped barrier plate 12 form a protection ring, and the piston 1 is surrounded between the ring-shaped barrier plate 12 and the protection plate 13, which effectively protects the piston 1 from damage caused by external impact during use. The protection plate 13 is a perforated plate or a screen, which is used to prevent sundries from approaching the piston 1.

[0052] The application further provides a use method of the self-adapting water depth high-power low-frequency electric transducer, and the use method is based on the self-adapting water depth high-power low-frequency electric transducer. The use method comprises the following steps: the end of the first transmission shaft 71 and the end of the second transmission shaft 72 of the electric transducer are in water, the ends of the first transmission shaft 71 and the second transmission shaft 72 are subjected to equal and opposite axial pressures, and the vibration mechanism is not affected by external pressure.

[0053] The air chamber 4 of the electric transducer is not pressurized, and the working water pressure of the electric transducer does not exceed the limit working pressure of the sealing ring 9.

[0054] The pressure in the air chamber 4 of the electric transducer is increased to the limit working pressure of the sealing ring 9, and the working water pressure of the electric transducer does not exceed twice the limit working pressure of the sealing ring 9.

[0055] In the description of the application, it should be understood that the terms "first", "second" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0056] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0058] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "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 application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A self-adapting water depth, high power, low frequency electrodynamic transducer, characterized in that, The adaptive water depth high-power low-frequency electric transducer comprises a shell (5), a pressure balance mechanism, a vibrating mechanism and a piston (1); An air chamber (4) is formed between the shell (5) and the vibrating mechanism, and pressurization in the air chamber (4) can improve the working water depth of the transducer; The pressure balance mechanism penetrates through the shell (5) and is in sealed connection with the shell (5), and the parts of the pressure balance mechanism located at both ends of the shell (5) are subjected to equal external pressure to balance the external pressure; The vibrating mechanism is arranged in the shell (5) and is connected with the pressure balance mechanism; The piston (1) is arranged outside the shell (5), and the piston (1) is connected with the vibrating mechanism through the pressure balance mechanism, and the piston (1) can vibrate with the vibrating mechanism to transmit sound waves; The pressure balance mechanism comprises a first transmission shaft (71) and a second transmission shaft (72); A first end of the first transmission shaft (71) penetrates through the shell (5) to connect the piston (1), and a second end of the first transmission shaft (71) is connected with the vibrating mechanism; A first end of the second transmission shaft (72) is connected with the vibrating mechanism, and a second end of the second transmission shaft (72) penetrates through the shell (5) to the outside; The first transmission shaft (71) and the second transmission shaft (72) are connected through the vibrating mechanism, and the axial pressure of the first end of the first transmission shaft (71) is equal to the axial pressure of the second end of the second transmission shaft (72).

2. The self-adapting deep-water, high-power, low-frequency electrodynamic transducer of claim 1, wherein, The first transmission shaft (71) and the second transmission shaft (72) are both in sealed connection with the shell (5) through sealing rings (9).

3. The self-adapting deep-water, high-power, low-frequency electrodynamic transducer of claim 2, wherein, The shell (5) comprises an upper end cover (10), a lower end cover (6) and a side plate; The upper end cover (10) and the lower end cover (6) are both connected with the side plate, and the upper end cover (10) and the lower end cover (6) are both provided with mounting holes, the sealing rings (9) are arranged in the mounting holes, the upper end cover (10) is in sealed connection with the first transmission shaft (71) through the sealing ring (9), and the lower end cover (6) is in sealed connection with the second transmission shaft (72) through the sealing ring (9).

4. A self-adapting deep-water, high-power, low-frequency electrodynamic transducer according to any one of claims 1-3, characterized in that, The vibrating mechanism comprises a magnetic cylinder (3) and a wire frame; The magnetic cylinder (3) is arranged in the shell (5), a magnetic gap (31) is formed in the magnetic cylinder (3), one end of the wire frame is arranged in the magnetic gap (31), and the other end of the wire frame is connected with the pressure balance mechanism.

5. The self-adapting deep-water, high-power, low-frequency electrodynamic transducer of claim 4, wherein, The wire frame comprises a mounting bracket and a coil (2), the coil (2) is wound around a first end of the mounting bracket, the first end of the mounting bracket is located in the magnetic gap (31), and a second end of the mounting bracket is connected with the pressure balance mechanism.

6. A self-adapting deep-water, high-power, low-frequency electrodynamic transducer according to any one of claims 1-3, characterized in that, The adaptive water depth high-power low-frequency electric transducer further comprises a vibration isolation air bag (11); The vibration isolation air bag (11) is arranged between the piston (1) and the shell (5), and the vibration isolation air bag (11) is arranged on one side of the piston (1) or on both sides of the piston (1). The vibration isolation air bag (11) is arranged on one side of the piston (1), the piston (1) vibrates, the vibration isolation air bag (11) vibrates with the piston (1), and the side of the piston (1) without the vibration isolation air bag (11) can generate non-directional sound waves. Both sides of the piston (1) are not provided with the vibration isolation air bag (11), the piston (1) vibrates, and the two sides of the piston (1) without the vibration isolation air bag (11) generate directional sound waves.

7. A self-adapting deep-water, high-power, low-frequency electrodynamic transducer according to any one of claims 1-3, characterized in that, The shell (5) is also provided with a positioning plate (8), the positioning plate (8) is fixedly arranged in the shell (5), and the positioning plate (8) is connected with the vibration mechanism.

8. A self-adapting deep-water, high-power, low-frequency electrodynamic transducer according to any one of claims 1-3, characterized in that, The self-adaptive water depth high-power low-frequency electric transducer further comprises a ring-shaped barrier plate (12) and a protection plate (13). One end of the ring-shaped barrier plate (12) is connected with the shell (5), the other end of the ring-shaped barrier plate (12) is connected with the protection plate (13), and the piston (1) is located between the ring-shaped barrier plate (12) and the protection plate (13) to protect the piston (1).

9. A method of using the self-adapting to water depth high-power low-frequency electrodynamic transducer, based on the self-adapting to water depth high-power low-frequency electrodynamic transducer implementation according to claim 2, characterized in that, The use method comprises the following steps: The end of the first transmission shaft (71) and the end of the second transmission shaft (72) of the electric transducer are in water, the ends of the first transmission shaft (71) and the second transmission shaft (72) are respectively subjected to axial pressures with equal size and opposite directions, and the vibration mechanism is not affected by external pressure; The air chamber (4) of the electric transducer is not pressurized, and the working water pressure of the electric transducer does not exceed the limit working pressure of the sealing ring (9); The pressure in the air chamber (4) of the electric transducer is increased to the limit working pressure of the sealing ring (9), and the working water pressure of the electric transducer does not exceed twice the limit working pressure of the sealing ring (9). The pressure in the air chamber (4) of the electric transducer is increased to the limit working pressure of the sealing ring (9), and the working water pressure of the electric transducer does not exceed twice the limit working pressure of the sealing ring (9).

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