CN113380219B - Bendable and foldable air interlayer type flexible sound reflection structure and application thereof - Google Patents
Bendable and foldable air interlayer type flexible sound reflection structure and application thereof Download PDFInfo
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- CN113380219B CN113380219B CN202110632874.9A CN202110632874A CN113380219B CN 113380219 B CN113380219 B CN 113380219B CN 202110632874 A CN202110632874 A CN 202110632874A CN 113380219 B CN113380219 B CN 113380219B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
- G10K11/205—Reflecting arrangements for underwater use
Abstract
The invention provides a bendable and foldable air interlayer type flexible sound reflection structure and application thereof. The acoustic reflection structure solves the problem that the traditional acoustic reflection structure adopts a composite structure based on a metal plate, has the characteristic of rigidity, and can not change the shape after being formed once; in addition, after the traditional sound reflection structure is used for manufacturing a larger acoustic reflector, the larger volume also brings inconvenience in transportation, storage and use.
Description
Technical Field
The invention relates to a bendable and foldable air interlayer type flexible sound reflection structure and application thereof, belonging to the technical field of underwater sound devices.
Background
The underwater acoustic material comprises a sound absorption material, a sound transmission material, an anti-sound material and the like, and in order to better achieve the required purpose, the defects of the acoustic performance of a single material or a composite material are made up, and the underwater acoustic material can be structurally designed and comprises a sound absorption structure, a sound transmission structure, an anti-sound structure and the like. The anti-sound material and the anti-sound structure are used for enhancing the reflection coefficient of sound waves, such as a reflection surface in an underwater corner reflector or an underwater corner reflector, an anti-sound baffle plate arranged behind a transducer element in a sonar transducer array and the like. In order to increase the reflection coefficient, a metal plate is generally used as the acoustic reflection structure, and the reflection coefficient in this case is related to the thickness of the metal plate and the acoustic frequency, and the thickness of the plate needs to be increased when the frequency is decreased.
Therefore, in the patent of 'an underwater vacuum corner reflector' (application number: 201921428243.X), the reflecting plate is designed into a vacuum cavity structure with two layers of metal plates fixedly connected along the periphery in a sealing way; in the patent of 'underwater sound corner reflector with air cavity' (application number: 201821924045.8), the reflecting plate is designed into an air cavity structure which is fixedly connected with the peripheries of two layers of metal plates in a sealing way and is internally provided with reinforcing ribs; in the patent of 'an underwater sound corner reflector with a foam interlayer' (application number: 201821924053.2), a reflecting plate is designed into two metal plates, and a light foam plastic layer is arranged between the two metal plates; in the patent "composite cavity sound baffle" (application No. 201910514351.7), a steel sheet is used to weld the cavity baffle into an air cavity. The traditional sound reflection structures all adopt composite structures based on metal plates, have the characteristic of rigidity, and can not change the shape after being formed once; in addition, the larger volume of the acoustic reflector manufactured by using the traditional acoustic reflection structure also brings inconvenience in transportation, storage and use.
Disclosure of Invention
The invention aims to solve the problem that the traditional sound reflection structure in the background art adopts a composite structure based on a metal plate, has the characteristic of rigidity, and can not change the shape after being formed once; in addition, after the traditional sound reflection structure is used for manufacturing a larger acoustic reflector, the technical problem that the larger volume also brings inconvenience in transportation, storage and use is solved, and the air sandwich type flexible sound reflection structure capable of being bent and folded is provided.
The invention provides a bendable and foldable air interlayer type flexible sound reflection structure which comprises an upper layer of film structure, a lower layer of film structure and a plurality of connecting wires, wherein the film structures comprise a plane hard thin layer structure, an outer side flexible film, an inner side flexible film and an edge flexible film, the outer side of the plane hard thin layer structure is provided with the outer side flexible film, the inner side of the plane hard thin layer structure is provided with the inner side flexible film, one surface of the plane hard thin layer structure is a plane, the other surface of the plane hard thin layer structure is provided with a plurality of bulges with through holes, one side of each of the two film structures with the bulges is oppositely arranged, the bulges on the two sides are in one-to-one correspondence, the bulges on the two sides are correspondingly connected after the connecting wires penetrate through the through holes on the bulges, an air interlayer is arranged between the upper layer of film structure and the lower layer of film structure, and the edges on the two sides of the upper layer of film structure and the lower layer of film structure are respectively provided with the edge flexible film.
Preferably, the shape of the protrusion is a hemisphere, a cylinder, or a polygonal column.
Preferably, the material of the planar hard thin-layer structure is a thin steel plate or an aluminum plate.
Preferably, the planar hard thin-layer structure is a square thin-layer plate or a rectangular thin-layer plate.
Preferably, the outer flexible film and the inner flexible film are made of polyvinyl chloride, polyethylene, polypropylene or polystyrene.
Preferably, the outer flexible membrane is an intact non-porous membrane.
Preferably, the inner flexible thin film is a thin film with a plurality of round holes, and the positions and the sizes of the round holes are determined by the positions and the sizes of the protrusions on the plane hard thin layer structure.
Preferably, the plurality of connecting lines are of uniform length.
Preferably, the connecting line is Kevlar fiber, high-strength polyethylene fiber or nylon line.
The application of the bendable and foldable air sandwich type flexible sound reflection structure is used for manufacturing an underwater acoustic angle reflector or an underwater sound baffle.
The air sandwich type flexible sound reflection structure capable of being bent and folded has the beneficial effects that:
(1) the invention has the characteristic of flexibility, and the shape of the reflecting surface can be easily changed according to the requirement;
(2) the invention can be bent and folded during transportation and storage, and does not occupy larger space.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic plan view of a planar hard laminate structure of the present invention;
FIG. 2 is a schematic side view of a planar rigid laminate structure of the present invention;
FIG. 3 is an exploded view of the thin film structure of the present invention;
FIG. 4 is a general schematic view of a film structure of the present invention;
FIG. 5 is a schematic view of an air sandwich type flexible acoustic reflection structure of the present invention;
the structure comprises a 1-plane hard thin layer structure, 2-bulges, 3-outer flexible thin film, 4-inner flexible thin film, 5-thin film structure, 6-connecting lines, 7-air interlayer and 8-edge flexible thin film.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 5. The bendable and foldable air sandwich type flexible sound reflection structure comprises an upper layer of thin film structure 5, a lower layer of thin film structure 5 and a plurality of connecting lines 6, the film structure 5 comprises a plane hard thin-layer structure 1, an outer flexible film 3, an inner flexible film 4 and an edge flexible film 8, the outer side of the plane hard thin layer structure 1 is provided with an outer side flexible thin film 3, the inner side is provided with an inner side flexible thin film 4, one side of the plane hard thin-layer structure 1 is a plane, the other side of the plane hard thin-layer structure is provided with a plurality of protrusions 2 with holes, one side of each of the two thin-film structures 5 with the protrusions 2 is placed in an opposite mode, the protrusions 2 on the two sides correspond to one another, the protrusions 2 on the two sides are correspondingly connected after penetrating the holes in the protrusions 2 through connecting wires 6, an air interlayer 7 is arranged between the upper thin-film structure 5 and the lower thin-film structure 5, and edges on two sides of the upper thin-film structure and the lower thin-film structure 5 are respectively provided with edge flexible thin films 8.
As shown in fig. 1 and 2, a planar hard thin-layer structure 1 is shown, one surface of the planar hard thin-layer structure 1 is a plane, the other surface is provided with a plurality of protrusions 2 with through holes, the shape of the protrusions 2 is preferably hemispherical, cylindrical or polygonal column, the material of the planar hard thin-layer structure 2 is preferably thin steel plate, aluminum plate or other material with enough hardness, and the shape of the planar hard thin-layer structure can be a square thin-layer plate or a rectangular thin-layer plate, preferably a square thin-layer plate.
As shown in fig. 3, a plurality of planar hard thin-layer structures 1 are arranged flatly and tightly, here for convenience of illustration, two planar hard thin-layer structures 1 are adopted to be flatly and tightly arranged, an outer flexible thin film 3 is tightly adhered to one side of the plane of the planar hard thin-layer structure 1, and an inner flexible thin film 4 is tightly adhered to one side of the bulge of the planar hard thin-layer structure 1, so as to obtain a thin-film structure 5, as shown in fig. 4.
The outer flexible film 3 is a complete non-porous film, the inner flexible film 4 is a film with a plurality of round holes, the positions and the sizes of the round holes are determined by the positions and the sizes of the plane hard thin-layer structure protrusions 2, and the materials of the outer flexible film 3 and the inner flexible film 4 are preferably flexible films which are made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins and have certain tensile strength.
As shown in fig. 5, the two film structures are placed with the protrusions on the two sides facing each other, the protrusions on the two sides are in one-to-one correspondence, and the connecting lines 6 are passed through the through holes on the protrusions 2 and then the protrusions on the two sides are correspondingly connected, and the lengths of all the connecting lines are the same. The connecting wire 6 is preferably a high-strength thin wire such as Kevlar fiber, high-strength polyethylene fiber, nylon wire or the like. The flexible film 8 is tightly adhered to the outer sides of the two film structures 5 at the peripheral edges to form a flexible sound reflection structure with an air interlayer.
The invention relates to a specific use method of a bendable and foldable air sandwich type flexible sound reflection structure, which comprises the following steps:
the air interlayer 7 may be pre-inflated with air under pressure prior to use under water.
In deep water use, the volume of the air interlayer 7 is reduced due to the action of water pressure, and the length of the connecting line 6 can be increased properly, namely the thickness of the air interlayer 7 is increased.
The area of the plane hard thin-layer structure 1 can be adjusted according to the needs, if the bending degree of the whole reflecting surface is large, the area of the plane hard thin-layer structure 1 can be reduced, and if the bending degree is not large, the area of the plane hard thin-layer structure 1 can be properly increased.
In particular, the air sandwich type flexible sound reflection structure can be used for manufacturing an underwater acoustic angle reflector or an underwater sound baffle, and belongs to the protection scope of the invention.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a flexible sound reflection configuration of flexible folding air intermediate layer formula, its characterized in that, includes two-layer film structure (5) and a plurality of connecting wire (6) from top to bottom, film structure (5) include plane stereoplasm lamellar structure (1), outside flexible film (3), inboard flexible film (4) and edge flexible film (8), the outside of plane stereoplasm lamellar structure (1) is provided with outside flexible film (3), and the inboard is provided with inboard flexible film (4), the one side of plane stereoplasm lamellar structure (1) is the plane, and the another side has a plurality of to have fenestrate arch (2), places the one side subtend who has arch (2) of two film structure (5), and the arch (2) one-to-one of both sides is passed the perforation on arch (2) with connecting wire (6) after with the protruding (2) correspondence connection of both sides, an air interlayer (7) is arranged between the upper layer of film structure and the lower layer of film structure (5), and the edges of two sides of the upper layer of film structure and the lower layer of film structure (5) are respectively provided with an edge flexible film (8).
2. A bendable folding air sandwich type flexible sound reflecting structure according to claim 1, characterized in that the shape of the protrusions (2) is a hemisphere, a cylinder or a polytropic cylinder.
3. A bendable-foldable air sandwich-type flexible acoustic reflection structure according to claim 1, characterized in that the material of the planar rigid laminar structure (1) is a thin steel or aluminum plate.
4. A bendable-folding air sandwich type flexible sound-reflecting structure according to claim 1, characterized in that the planar rigid laminar structure (1) is a square or a rectangular laminar plate.
5. A bendable folding air sandwich type flexible sound reflecting structure according to claim 1, characterized in that the material of the outer flexible film (3) and the inner flexible film (4) is polyvinyl chloride, polyethylene, polypropylene or polystyrene.
6. A bendable-folding air sandwich-type flexible acoustic reflection structure according to claim 1, characterized in that the outer flexible membrane (3) is a full non-porous membrane.
7. A bendable folding air sandwich type flexible sound reflecting structure according to claim 1, characterized in that the inner flexible film (4) is a film with several circular holes, the position and size of which are determined by the position and size of the protrusions (2) on the planar rigid laminar structure (1).
8. A bendable folding air sandwich type flexible acoustic reflection structure according to claim 1, characterized in that several connection lines (6) are of uniform length.
9. A bendable folding air sandwich type flexible acoustic reflection structure according to claim 1, characterized in that the connection line (6) is Kevlar fiber, high strength polyethylene fiber or nylon wire.
10. Use of a flexible, foldable air sandwich type sound-reflecting structure according to any of claims 1-9 for making an underwater acoustic corner reflector or an underwater sound baffle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110632874.9A CN113380219B (en) | 2021-06-07 | 2021-06-07 | Bendable and foldable air interlayer type flexible sound reflection structure and application thereof |
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| CN202110632874.9A CN113380219B (en) | 2021-06-07 | 2021-06-07 | Bendable and foldable air interlayer type flexible sound reflection structure and application thereof |
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| CN113380219A CN113380219A (en) | 2021-09-10 |
| CN113380219B true CN113380219B (en) | 2022-05-20 |
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| CN113488018B (en) * | 2021-06-07 | 2022-08-09 | 哈尔滨工程大学 | Bendable and foldable hollow glass bead interlayer type flexible sound reflection structure and application |
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| CN102543062A (en) * | 2011-12-30 | 2012-07-04 | 中国船舶重工集团公司第七二五研究所 | Broadband pressureproof sound reflecting structure |
| CN102568465A (en) * | 2012-01-14 | 2012-07-11 | 哈尔滨工程大学 | Under-water self-adapting curved-surface composite acoustic material |
| WO2015007221A1 (en) * | 2013-07-18 | 2015-01-22 | The Hong Kong University Of Science And Technology | Extraordinary acoustic absorption induced by hybrid resonance and electrical energy generation from sound by hybrid resonant metasurface |
| CN110223667A (en) * | 2019-06-14 | 2019-09-10 | 哈尔滨工程大学 | A kind of Composite Hollow acoustic baffle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9536514B2 (en) * | 2013-05-09 | 2017-01-03 | Sound Barrier, LLC | Hunting noise masking systems and methods |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543062A (en) * | 2011-12-30 | 2012-07-04 | 中国船舶重工集团公司第七二五研究所 | Broadband pressureproof sound reflecting structure |
| CN102568465A (en) * | 2012-01-14 | 2012-07-11 | 哈尔滨工程大学 | Under-water self-adapting curved-surface composite acoustic material |
| WO2015007221A1 (en) * | 2013-07-18 | 2015-01-22 | The Hong Kong University Of Science And Technology | Extraordinary acoustic absorption induced by hybrid resonance and electrical energy generation from sound by hybrid resonant metasurface |
| CN110223667A (en) * | 2019-06-14 | 2019-09-10 | 哈尔滨工程大学 | A kind of Composite Hollow acoustic baffle |
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| Acoustic insulation and absorption mechanism of metallic hollow spheres composites with different polymer matrix;Tianmiao Yu;《Composite Structures》;20200915;全文 * |
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