Anti-rubber and overflow transducer applied to overflow transducer

Abstract

The application discloses a sound barrier applied to a flooding transducer and the flooding transducer, which comprises a plurality of array-arranged air pipe assemblies, and a plurality of stepped working air pressures are arranged in the air pipes in the air pipe assembly array, so that the air pipe assembly array forms a plurality of specific air pressure air pipe arrays which are superimposed or nested; the sound barrier applied to the flooding transducer and the flooding transducer provided by the application are characterized in that: the protection pipes are arranged on the outer periphery of the air pipes to protect the air pipes; the plurality of stepped working air pressures are arranged in the air pipes in the air pipe assembly array, so that the air pipe assembly array forms a plurality of specific air pressure air pipe arrays which are superimposed or nested; the arrangement of the plurality of specific air pressure air pipe arrays can make the sound barrier have a better sound reflection effect in a wider depth range, so that the flooding transducer can have better acoustic performance.

Description

Technical Field

[0001] This invention relates to the field of overflow transducer technology, and particularly to an acoustic baffle for use in overflow transducers and an overflow transducer. Background Technology

[0002] Sound waves can propagate over long distances in aquatic environments (especially oceans) and can serve as carriers of information and energy. Transducers have significant value in both military and civilian fields.

[0003] Overflow transducers have both their inner and outer cavities in contact with the fluid medium, which can flow freely within and outside the cavities. This improves the transducer's resistance to hydrostatic pressure, enabling it to operate at near-full ocean depths. It also facilitates heat dissipation, enhancing reliability during high-power operation. However, because both sides of the overflow transducer's vibrating housing are in contact with the fluid medium, the vibrations on both sides are out of phase, resulting in lower sound radiation efficiency. Consequently, overflow transducers are inferior to air-backed transducers in terms of sound source level and directivity.

[0004] A traditional method to improve the performance of overflow transducers is to place a soft baffle with low acoustic impedance on one side. The function of the soft baffle is to change the equivalent acoustic impedance of the medium on this side, causing an impedance mismatch between the two sides. Under the excitation of opposite-phase vibration, the sound waves on both sides are no longer equal in amplitude and out of phase, thereby improving the acoustic performance of the transducer.

[0005] Conventional baffles are made of porous closed-cell foam plastic, foam rubber, or flexible metal tubing, but due to the inherent properties of these materials, they are difficult to operate in deep water while maintaining acoustic performance. There are also pre-pressurized air baffles that can improve transducer performance at specific depths; for example, if the air tube is pre-pressurized with 5 MPa of gas, the air baffle will function well when the external pressure is greater than 5 MPa, resulting in a significant performance improvement for the transducer. However, when the ambient pressure is less than 5 MPa, the air baffle does not deform under external water pressure, failing to effectively address the medium mismatch on both sides of the shell and thus failing to improve acoustic performance. Summary of the Invention

[0006] The main objective of this invention is to provide a reflective baffle for use in overflow transducers and an overflow transducer, aiming to solve the problem of...

[0007] To achieve the above objectives, the present invention provides an acoustic reflector baffle for use in an overflow transducer, comprising:

[0008] The first mounting plate has multiple first fixing holes distributed on its surface;

[0009] A second mounting plate is provided corresponding to the first mounting plate, and a plurality of second fixing holes are provided on the second mounting plate corresponding to a plurality of first fixing holes;

[0010] A tracheal assembly array includes multiple tracheal assemblies arranged in an array. Each tracheal assembly includes a trachea, a first plug, a second plug, and a protective tube. The trachea is made of flexible material. The first plug and the second plug are respectively closed at both ends of the trachea along its length. The outer wall of the trachea matches the inner wall of the protective tube. The protective tube is fluid permeable. One end of the tracheal assembly along its length is fixed to the first fixing hole, and the other end of the tracheal assembly along its length is fixed to the second fixing hole.

[0011] The trachea in the trachea assembly array has multiple stepped working air pressures, thereby forming multiple stacked or nested specific air pressure trachea arrays.

[0012] Furthermore, the trachea is cylindrical.

[0013] Furthermore, the connection method between the first plug and the air tube, and the connection method between the second plug and the air tube, are sleeve connection, crimping connection, or adhesive connection.

[0014] Furthermore, the diameter of the trachea is inversely proportional to the working pressure inside the trachea.

[0015] Furthermore, the protective tube is a Kevlar mesh layer or a metal mesh layer.

[0016] Furthermore, the first plug and the second plug are made of metal or polymer.

[0017] Furthermore, the cross-section of the tracheal assembly array is rectangular, and the working pressure inside the trachea forms a differential gradient in the length or width direction of the cross-section of the tracheal assembly array.

[0018] Furthermore, the cross-section of the tracheal assembly array is circular or elliptical, and the working pressure inside the trachea forms a differential gradient from the center of the cross-section of the tracheal assembly array outward.

[0019] The present invention also provides an overflow transducer, including the aforementioned acoustic baffle.

[0020] Furthermore, the maximum operating depth of the overflow transducer is P meters, and the air duct assembly array has multiple stepped working air pressure values ​​of P / (2*100) MPa, an internal working air pressure of P / (2*100) MPa, and an internal working air pressure of P / (8*100) MPa.

[0021] The present invention provides an acoustic reflector baffle and an overflow transducer for use in overflow transducers. The protective tube is set on the outer periphery of the air tube to protect the air tube. The air tube assembly array has multiple stepped working air pressures in the air tube, so that the air tube assembly array forms multiple specific air pressure air tube arrays that are stacked or nested. By setting multiple specific air pressure air tube arrays, the acoustic reflector baffle can have a good acoustic reflective effect in a wide depth range, so that the overflow transducer can also have good acoustic performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a duct assembly applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention (protective tube hidden);

[0023] Figure 2 This is a cross-sectional view (protective tube hidden) of a duct assembly applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of a duct assembly applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional view of a duct assembly applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of a first mounting plate applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of the first mounting plate applied in the acoustic baffle of an overflow transducer according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of an anti-acoustic baffle applied to an overflow transducer according to an embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of an anti-acoustic baffle applied to an overflow transducer according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the first mounting plate applied in the acoustic baffle of an overflow transducer according to the second embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the first mounting plate applied in the acoustic baffle of an overflow transducer according to the third embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the acoustic baffle applied to an overflow transducer according to the third embodiment of the present invention;

[0033] Figure 12 This is a cross-sectional view of the acoustic baffle applied to an overflow transducer according to the third embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of the acoustic baffle applied to an overflow transducer according to the fourth embodiment of the present invention;

[0035] Figure 14 This is a cross-sectional view of the acoustic baffle applied to an overflow transducer according to the fourth embodiment of the present invention;

[0036] Figure 15 This is a cross-sectional view (bending type) of the overflow transducer according to the fifth embodiment of the present invention;

[0037] Figure 16 This is a cross-sectional view (disc shape) of the overflow transducer according to the sixth embodiment of the present invention;

[0038] Figure 17 This is a cross-sectional view (annular type) of the overflow transducer according to the seventh embodiment of the present invention.

[0039] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any of the units and all combinations of one or more associated listed items.

[0042] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0043] Reference Figures 1 to 17 In one embodiment of the present invention, an acoustic baffle applied to an overflow transducer includes:

[0044] The first mounting plate 100 has a plurality of first fixing holes 110 distributed on its surface;

[0045] The second mounting plate 200 is provided corresponding to the first mounting plate 100, and the second mounting plate 200 is provided with a plurality of second fixing holes corresponding to the plurality of first fixing holes 110.

[0046] A tracheal assembly array includes multiple tracheal assemblies 300 arranged in an array. Each tracheal assembly 300 includes a tracheal tube 310, a first plug 320, a second plug 330, and a protective tube 340. The tracheal tube 310 is made of flexible material. The first plug 320 and the second plug 330 are respectively closed at both ends of the tracheal tube 310 along its length. The outer wall of the tracheal tube 310 matches the inner wall of the protective tube 340. The protective tube 340 is fluid permeable. One end of the tracheal assembly 300 along its length is fixed to the first fixing hole 110, and the other end of the tracheal assembly 300 along its length is fixed to the second fixing hole.

[0047] The trachea 310 in the trachea assembly array has multiple stepped working air pressures, thereby forming multiple stacked or nested specific air pressure trachea arrays 301.

[0048] In the prior art, the method to improve the performance of the overflow transducer 400 is to place a soft baffle with low acoustic impedance on one side, so as to cause impedance mismatch between the two sides of the medium, thereby improving the acoustic performance of the transducer; however, baffles made of porous closed-cell foam plastic, foam rubber or metal flexible tube are limited by their own material properties and are difficult to operate in deep water while maintaining acoustic performance; and pre-set compressed air baffles can only improve acoustic performance at a specific depth.

[0049] In this invention, the air tube 310, the first plug 320, and the second plug 330 form a closed tubular structure with air pressure, while the protective tube 340 is disposed on the outer periphery of the air tube 310 to protect it. The protective tube 340 needs to be fluid-permeable to avoid affecting the function of the air tube 310. The first plug 320 and the second plug 330 can be connected to the air tube 310 in various ways. The tightness of the connection between the first plug 320, the second plug 330, and the air tube 310 can be improved by using the first fixing hole 110 and the second fixing hole. The first fixing hole 110 and the second fixing hole can be blind holes or through holes, specifically for restricting and fixing the first plug 320 and the second plug 330. The length of the air tube assembly 300 is not limited to a uniform length; the specific length is mainly determined by matching the transducer structure. Correspondingly, the shapes of the first mounting plate 100 and the second mounting plate 200 also need to be modified accordingly.

[0050] The tracheal tubes 310 in the tracheal tube assembly array have multiple stepped working air pressures, thus forming multiple stacked or nested specific air pressure tracheal tube arrays 301. For example, if three different working air pressures are set in all tracheals 310, then three specific air pressure tracheal tube arrays 301 can be formed. The working surface of the overflow transducer 400 may have different shapes, so the corresponding acoustic baffle 1000 should have a shape corresponding to its working surface, and the combination method of the specific air pressure tracheal tube arrays 301 should also be selected accordingly. For example, if the working surface of the overflow transducer 400 is plate-shaped, the shape of the tracheal tube assembly array can be block-shaped, and the specific air pressure tracheal tube arrays 301 can be stacked with each other; or if the working surface of the overflow transducer 400 is cylindrical, the shape of the tracheal tube assembly array can be cylindrical, and the specific air pressure tracheal tube arrays 301 can be nested with each other. By setting up multiple specific air pressure tube arrays 301, the acoustic reflector 1000 can have a good acoustic reflective effect over a wide depth range, thus enabling the overflow transducer 400 to have good acoustic performance.

[0051] During the processing of the sound-reflecting baffle 1000, a suitable process can be selected according to the production environment. For example, the air pipe 310 is inserted into the protective pipe 340, the first plug 320 is sealed at one end of the air pipe 310, and then an easily evaporable or sublimated substance (such as dry ice) is placed in the air pipe 310. The second plug 330 is then used to seal the other end of the air pipe 310. Finally, the air pipe assembly 300 is installed on the first mounting plate 100 and the second mounting plate 200.

[0052] In summary, the protective tube 340 is disposed on the outer periphery of the air tube 310 to protect the air tube 310; the air tube 310 in the air tube assembly array has multiple stepped working air pressures, so the air tube assembly array forms multiple specific air pressure air tube arrays 301 that are stacked or nested. By setting multiple specific air pressure air tube arrays 301, the sound reflector 1000 can have a good sound reflection effect in a wide depth range, so the overflow transducer 400 can also have good acoustic performance.

[0053] In one embodiment, the trachea 310 is cylindrical.

[0054] In this embodiment, the cylindrical air tube 310 has the advantage of low acoustic impedance, thus achieving a better sound reflection effect; therefore, when the sound reflection baffle 1000 is applied to the overflow transducer 400, it can achieve better acoustic performance.

[0055] In one implementation, the connection between the first plug 320 and the air tube 310, and the connection between the second plug 330 and the air tube 310, are by sleeve connection, crimping connection, or adhesive connection.

[0056] In this embodiment, the connection between the first plug 320 and the air tube 310, and the connection between the second plug 330 and the air tube 310, are based on the premise of ensuring the air tube 310 is secure. The specific connection method is selected with reference to the usage environment and ease of processing. It should be noted that multiple connection methods may be combined simultaneously to ensure the stability of the connection.

[0057] In one embodiment, the outer diameter of the first plug 320 is dimensionally interfering with the inner diameter of the first fixing hole 110, and the outer diameter of the second plug 330 is dimensionally interfering with the inner diameter of the second fixing hole. In this embodiment, one end of the air tube 310 along its length is clamped by the first plug 320 and the first fixing hole 110, and the other end of the air tube 310 along its length is clamped by the first plug 320 and the first fixing hole 110.

[0058] In this embodiment, taking the first plug 320 as an example, the outer diameter of the first plug 320 and the inner diameter of the first fixing hole 110 form a dimensional interference. When the first fixing hole 110 matches the first plug 320, the air tube 310 can be stably clamped. Of course, during the assembly process of the air tube assembly 300, local cooling may be required to generate cold shrinkage before assembly.

[0059] In one embodiment, the diameter of the trachea 310 is inversely proportional to the working pressure within the trachea 310.

[0060] In this embodiment, the diameter of the air tube 310 is not a fixed value and is inversely proportional to its internal working pressure. Therefore, under higher working air pressure, a smaller diameter air tube 310 reduces the possibility of accidental rupture. Correspondingly, the diameter of the protective tube 340 also varies with the diameter of the air tube 310; a smaller diameter protective tube 340 also has a lower probability of rupture. The limited diameter of the air tube 310 in this embodiment is highly advantageous when the sound-reflecting baffle 1000 operates at higher pressures.

[0061] In one embodiment, the protective tube 340 is a Kevlar mesh layer or a metal mesh layer.

[0062] The Kevlar mesh or metal mesh layer described above provides sufficient protection while ensuring fluid permeability, preventing abnormal rupture of the trachea 310 under high air pressure. The metal mesh layer can be made of iron alloys, aluminum alloys, titanium alloys, etc., and the specific choice depends on the actual application scenario.

[0063] In one embodiment, the first plug 320 and the second plug 330 are made of metal or polymer.

[0064] In this embodiment, metal materials have the advantage of high strength, while polymer materials have the advantages of corrosion resistance and adhesiveness.

[0065] Reference Figures 5 to 9 ,as well as Figures 13 to 14 In one embodiment, the cross-section of the tracheal assembly array is rectangular (a square is a rectangle in a special case), and the working pressure inside the trachea 310 forms a differential gradient in the length or width direction of the cross-section of the tracheal assembly array.

[0066] Specifically, during installation, each specific pressure air tube array 301 should ideally cover the working surface of the overflow transducer 400. Different shapes of reflective baffles 1000 are required for different models of overflow transducers 400. In this embodiment, the working surface of the overflow transducer 400 is plate-shaped (e.g., a bent-type transducer). Therefore, the cross-sectional shape of the air tube array can be plate-shaped (a narrow rectangle), and the corresponding cross-section of the air tube array is also rectangular. This creates a differential pressure gradient (e.g., increasing, decreasing, increasing then decreasing, or decreasing then increasing) across the width of the air tube array cross-section, ensuring that each specific pressure air tube array 301 can cover the working surface of the overflow transducer 400. Thus, the reflective baffle 1000 can provide good reflective performance under different working pressures. It should be noted that the requirement for the cross-section of the air tube array to be rectangular is not strictly a standard rectangle; the overall shape is used as a reference.

[0067] Reference Figures 10 to 12 In one embodiment, the cross-section of the tracheal assembly array is circular or elliptical, and the working pressure within the trachea 310 forms a differential gradient in the direction from the center of the cross-section of the tracheal assembly array outward.

[0068] In this embodiment, the working surface of the overflow transducer 400 is cylindrical (such as an annular transducer), so the shape of the air tube assembly array can be cylindrical, and the corresponding cross-section of the air tube assembly array is circular or elliptical. Then, the working pressure inside the air tube 310 forms a differential gradient (such as increasing, decreasing, increasing then decreasing, or decreasing then increasing, etc.) from the center of the cross-section of the air tube assembly array outward. This allows each specific air pressure air tube array 301 to cover the working surface of the overflow transducer 400, so that the sound reflector 1000 can provide a good sound reflection effect under different working pressures.

[0069] Reference Figures 15 to 17 The present invention also provides an overflow transducer, including the aforementioned acoustic baffle 1000.

[0070] By setting different pressures in the air pipe 310 of the anti-sound baffle 1000, the overflow transducer 400 can be made to change the equivalent acoustic impedance on the inner and outer sides of the overflow transducer 400 under different pressure conditions, so that the impedance mismatch of the medium on both sides is caused, and the sound waves on both sides under the excitation of anti-phase vibration are no longer equal in amplitude and anti-phase, thereby improving the acoustic performance of the transducer at various depths.

[0071] Reference Figures 15 to 17 In three different implementations, the overflow transducers were of three types: bent-out type, disc type, and annular type.

[0072] In one embodiment, the maximum operating depth of the overflow transducer 400 is P meters, and the air duct 310 in the air duct assembly array has multiple stepped working air pressure values ​​of P / (2*100) MPa, an internal working air pressure of P / (2*100) MPa, and an internal working air pressure of P / (8*100) MPa.

[0073] In this embodiment, the tracheal assembly array forms three specific pressure tracheal arrays 301, with their working pressures being P / (2*100), P / (2*100), and P / (8*100) MPa, respectively. The reasonable arrangement of these three working pressure values ​​enables the overflow transducer 400 to work effectively in most of the range of its maximum working depth.

[0074] In summary, the acoustic reflector baffle and overflow transducer provided by this invention have a protective tube 340 disposed on the outer periphery of the air duct 310 to protect the air duct 310; the air duct assembly array has multiple stepped working air pressures in the air duct 310, thereby forming multiple stacked or nested specific air pressure air duct arrays 301. By setting multiple specific air pressure air duct arrays 301, the acoustic reflector baffle 1000 can have a good acoustic reflective effect in a wide depth range, thereby the overflow transducer 400 can also have good acoustic performance.

[0075] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A reflective baffle for use in an overflow transducer, characterized in that, include: The first mounting plate (100) has multiple first fixing holes (110) distributed on its surface; The second mounting plate (200) is provided corresponding to the first mounting plate (100), and the second mounting plate (200) is provided with a plurality of second fixing holes corresponding to the plurality of first fixing holes (110); A tracheal assembly array includes multiple tracheal assemblies (300) arranged in an array. Each tracheal assembly (300) includes a trachea (310), a first plug (320), a second plug (330), and a protective tube (340). The trachea (310) is made of flexible material. The first plug (320) and the second plug (330) are respectively closed at both ends of the trachea (310) along its length. The outer wall of the trachea (310) matches the inner wall of the protective tube (340). The protective tube (340) is fluid permeable. One end of the tracheal assembly (300) along its length is fixed to the first fixing hole (110), and the other end of the tracheal assembly (300) along its length is fixed to the second fixing hole. The trachea (310) in the trachea assembly array has multiple stepped working air pressures, thereby forming multiple stacked or nested specific air pressure trachea arrays (301).

2. The acoustic baffle applied to an overflow transducer according to claim 1, characterized in that, The trachea (310) is cylindrical.

3. The acoustic baffle applied to an overflow transducer according to claim 1, characterized in that, The connection between the first plug (320) and the air tube (310) and the connection between the second plug (330) and the air tube (310) are sleeve, crimp, or adhesive.

4. The acoustic baffle applied to an overflow transducer according to claim 1, characterized in that, The diameter of the trachea (310) is inversely proportional to the working pressure inside the trachea (310).

5. The acoustic baffle applied to an overflow transducer according to claim 1, characterized in that, The protective tube (340) is a Kevlar mesh layer or a metal mesh layer.

6. The acoustic baffle applied to an overflow transducer according to claim 1, characterized in that, The first plug (320) and the second plug (330) are made of metal or polymer.

7. The acoustic baffle applied to an overflow transducer according to any one of claims 1 to 6, characterized in that, The cross-section of the tracheal assembly array is rectangular, and the working pressure inside the trachea (310) forms a differential gradient in the length or width direction of the cross-section of the tracheal assembly array.

8. The acoustic baffle applied to an overflow transducer according to any one of claims 1 to 6, characterized in that, The cross-section of the tracheal assembly array is circular or elliptical, and the working pressure inside the trachea (310) forms a differential gradient from the center of the cross-section of the tracheal assembly array outward.

9. An overflow transducer, characterized in that, Includes the acoustic reflector (1000) as described in any one of claims 1 to 8.

10. The overflow transducer according to claim 9, characterized in that, The maximum operating depth of the overflow transducer (400) is P meters. The air duct (310) in the air duct assembly array has multiple stepped working air pressure values ​​of P / (2*100) MPa, internal working air pressure of P / (2*100) MPa and internal working air pressure of P / (8*100) MPa.

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