CN200990205Y - Conical cavity underwater acoustic board - Google Patents
Conical cavity underwater acoustic board Download PDFInfo
- Publication number
- CN200990205Y CN200990205Y CN 200620049617 CN200620049617U CN200990205Y CN 200990205 Y CN200990205 Y CN 200990205Y CN 200620049617 CN200620049617 CN 200620049617 CN 200620049617 U CN200620049617 U CN 200620049617U CN 200990205 Y CN200990205 Y CN 200990205Y
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Abstract
The utility model relates to a damping and anti-noise field, in particular to a sound-absorbing board, which aims at solving the defects of the prior art to provide an under-water sound-absorbing board which is designed to have a better sound-absorbing and noise-decreasing capability and has a level surface after arrangement. The under-water sound-absorbing board comprises a sound-absorbing layer and an arranging layer formed by a sound-penetrating material. The sound-absorbing layer and the arranging layer are compressed and stuck to form a sticking face between the sound-absorbing layer and the arranging layer, and a plurality of structural hollow cavities are arranged in the inner part of the sound absorbing layer. The utility model is characterized in that the cuts of the structural hollow cavities are arranged on the sticking face; the lower section of the structural hollow cavities appear as the taper shape whose aperture changes in a straight line gradually; the upper section appears as a column shape. The air cavity can not only absorb the dispersion and resonance generated by the sound wave but also realize the adaptation to the gradual-changing of sound-resistance, so as to make more sound energy penetrate into the utility model to be absorbed. The utility model is more suitable to be used as a sound absorbing structure.
Description
Technical field:
The utility model relates to the vibration and noise reducing field, is specifically related to acoustic board.
Background technology:
Sound wave is a kind of as mechanical wave, has ripple all characteristics in the air.Sound wave if acoustic energy constantly is converted into other forms of energy, can cause the sound intensity constantly to be decayed in communication process.Can utilize this characteristic, carry out noise sound absorption control.
When sound absorption is meant sonic propagation to jobbie, part acoustic energy is absorbed (when not considering to propagate by the absorption of medium) here in medium by object, this comprises that sound wave is converted into heat energy and is consumed or is converted into energy of vibration transmission transfer in object, or directly is transmitted to object another side space.For incident acoustic wave, except reflection (scattering) acoustic energy that reflexes to original space, its complementary energy all is counted as being absorbed by object.
Sound absorption can be divided into material sound absorption and structure sound absorption.The material sound absorption is meant and utilizes the bigger material of acoustical absorption coefficient to absorb sound, mostly be poriness, fibrous material, as glass wool, the polyfoam of space connection, special metal fibre cotton or the like, porous sound-absorbing material has basic sound absorption characteristics, be that low frequency absorption is poor, high frequency absorbs sound, and is not suitable for using under water.The structure sound absorption is meant and not only utilizes material behavior, more is to utilize the custom design of structure to absorb sound, and adopts the array of cavities of different types, according to cavity size, and the different absorption sound waves of different frequencies that are applicable to of density with spread pattern.A kind of flexible acoustic board of structure sound absorption just is provided for 200320131737.4 Chinese utility model patent as the patent No., by being pressed into the acoustic board main body in proper order up and down, on the acoustic board main body, have the identical or different hole of a plurality of diameters by printed layer, absorbent treatment, back of the body seal.The flexibility sound absorption utmost point that this patent provided is a kind of typical architectural decoration acoustic board.
In the prior art, mostly the underwater sound absorption product is the rubber wedge absorber, and as the wedge absorber of section triangle array and the wedge absorber of many cones M * N array, it is a kind of structure sound absorption product, and its structural representation is referring to Fig. 1, Fig. 2.In the underwater sound work at home and abroad, the use of wedge absorber is very extensive, the common places such as acoustic experiment pond, naval vessel acoustic equipment work chamber that are installed on.
Though wedge absorber rubber has good acoustically effective, but because it installs the back wedge outwardly, inconvenient personnel walk and carry out necessary operation, so, need a kind of plate underwater sound absorption product of research, make its good sound absorption effect that can keep traditional wedge absorber rubber, and it is smooth that the back outside surface is installed, necessary operation is carried out in suitable personnel's walking.And if the straight pass sound absorption structure that adopts above-mentioned Chinese utility model patent to provide utilizes water-resistant material to make the underwater sound absorption plate, its acoustically effective still can not satisfy the sound absorption requirement of underwater sound work well.
The utility model content:
Technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of underwater sound absorption plate is provided, and makes it both have good sqouynd absorption lowering noise performance, and it is smooth that the back outside surface is installed.
For solving the problems of the technologies described above, the utility model is to propose following technical scheme to realize:
Conical cavity underwater sound absorption plate, it comprises absorbent treatment and the mounting layer of being made up of acoustic window material, bonding plane of the bonding formation of pressing between absorbent treatment and the mounting layer, absorbent treatment inside has a plurality of structural cavities, it is characterized in that: described structural cavities is opened on the described bonding plane, the structural cavities hypomere is the taper shape of aperture linear gradual change, and epimere is cylindrical.
The structural cavities arrangement can be array or be staggered.
The utility model brings following beneficial effect:
Conical structure cavity aperture gradual change of the present utility model can bring the good result of broad band sound absorption with respect to constant aperture, promptly can absorb the sound wave on certain frequency span zone.A certain constant aperture then be that the acoustically effective of some frequency ranges is fine, but the frequency span that covers is very narrow.The utility model can also be realized the gradual change coupling of acoustic impedance except that producing scattering and the resonance absorbing sound wave, is absorbed thereby make more acoustic energy penetrate wherein, is more suitable for doing sound absorption structure.
Description of drawings:
Fig. 1: section triangle array wedge absorber of the prior art
Fig. 2: many cones M of the prior art * N array wedge absorber
Fig. 3: the cavity vertical profile figure of the utility model one preferred embodiment
Fig. 4: the utility model one preferred embodiment is along the sectional view of A-A direction
Embodiment:
Below in conjunction with the drawings and specific embodiments the utility model is further described:
In conjunction with referring to Fig. 3 and Fig. 4.
The manufactured materials of present embodiment is selected the elastomeric material with better acoustically effective for use.1. mounting layer selects the elastomeric material with certain sound translative performance for use, is used for pasting installing, and its thickness h 1 satisfies installation requirement and gets final product.2. structural cavities adopts the taper shape of aperture linear gradual change to add one section columniform cavity.3. absorbent treatment is made by mould, and 1. high pressure is bonding with mounting layer again.Internal cavities diameter D1, D2 and height h2 2. determines that according to the sound absorption frequency range height h3 determines according to manufacturing process, arranges in order at plane space, and arrangement pitches d1, d2 are determined by the sound absorption frequency range.Entire product structural thickness h is determined by the corresponding increase of height h2 of internal cavities.
Present embodiment is to fit tightly by glue special and installed surface, the fixed form that the bulk rubber slab can dual-purpose stud nut threading.
Present embodiment also can adopt compound substance or other water tolerance made.Mounting layer 1., absorbent treatment structured material 3. can be identical or different.
For the absorption of intermediate frequency sound wave, sound absorbent rubber plate thickness h gets 75mm, and mounting layer 1. height h1 is got 2mm, the structural cavities desirable φ 1mm of upper and lower diameter D1, D2, φ 11mm 2., cavity height h2 gets 65mm, and height h3 gets 5mm, cavity arrangement pitches d1, the desirable 25mm of d2 and 29mm.
The structural cavities arrangement can be array or be staggered.
Claims (2)
1, conical cavity underwater sound absorption plate, it comprises absorbent treatment and the mounting layer of being made up of acoustic window material, bonding plane of the bonding formation of pressing between absorbent treatment and the mounting layer, absorbent treatment inside has a plurality of structural cavities, it is characterized in that: described structural cavities is opened on the described bonding plane, the structural cavities hypomere is the taper shape of aperture linear gradual change, and epimere is cylindrical.
2, according to the described conical cavity underwater sound absorption of claim 1 plate, it is characterized in that: described structural cavities arrangement can be array or be staggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049617 CN200990205Y (en) | 2006-12-27 | 2006-12-27 | Conical cavity underwater acoustic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049617 CN200990205Y (en) | 2006-12-27 | 2006-12-27 | Conical cavity underwater acoustic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990205Y true CN200990205Y (en) | 2007-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049617 Expired - Lifetime CN200990205Y (en) | 2006-12-27 | 2006-12-27 | Conical cavity underwater acoustic board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990205Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094922A (en) * | 2011-01-29 | 2011-06-15 | 浙江工业大学 | Porous rubber material member and full-frequency range vibration acoustical property analysis method thereof |
| CN102354493A (en) * | 2011-05-27 | 2012-02-15 | 哈尔滨工程大学 | Controllable underwater acoustic board |
| CN103943101A (en) * | 2014-03-19 | 2014-07-23 | 中船重工海声科技有限公司 | Acoustical sound absorption module for anechoic tank |
| CN104464710A (en) * | 2014-11-21 | 2015-03-25 | 南京航空航天大学 | Acoustic sandwich panel |
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN105006226A (en) * | 2015-07-30 | 2015-10-28 | 贵州大学 | Cylindrical cavity combination sound-absorbing coating |
| CN105109122A (en) * | 2015-09-18 | 2015-12-02 | 贵州大学 | Viscoelasticity composite sound insulating board |
| CN106320548A (en) * | 2016-11-02 | 2017-01-11 | 山西尚风抑风墙科技有限公司 | Manufacturing process of sound shielding device |
| CN107263967A (en) * | 2017-07-20 | 2017-10-20 | 北京海月星科技有限公司 | One kind sound insulation isolator and preparation method and application |
| CN110176224A (en) * | 2019-06-20 | 2019-08-27 | 南京航空航天大学 | A kind of pyramid dot matrix enhancing cavity type underwater sound absorption structure |
| RU2770257C1 (en) * | 2021-09-17 | 2022-04-14 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Controlled hydro-acoustic coating |
-
2006
- 2006-12-27 CN CN 200620049617 patent/CN200990205Y/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094922A (en) * | 2011-01-29 | 2011-06-15 | 浙江工业大学 | Porous rubber material member and full-frequency range vibration acoustical property analysis method thereof |
| CN102094922B (en) * | 2011-01-29 | 2012-11-14 | 浙江工业大学 | Porous rubber material member and full-frequency range vibration acoustical property analysis method thereof |
| CN102354493A (en) * | 2011-05-27 | 2012-02-15 | 哈尔滨工程大学 | Controllable underwater acoustic board |
| CN102354493B (en) * | 2011-05-27 | 2012-08-22 | 哈尔滨工程大学 | Controllable underwater sound-absorbing panel |
| CN103943101A (en) * | 2014-03-19 | 2014-07-23 | 中船重工海声科技有限公司 | Acoustical sound absorption module for anechoic tank |
| CN104464710A (en) * | 2014-11-21 | 2015-03-25 | 南京航空航天大学 | Acoustic sandwich panel |
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN105006226A (en) * | 2015-07-30 | 2015-10-28 | 贵州大学 | Cylindrical cavity combination sound-absorbing coating |
| CN105109122A (en) * | 2015-09-18 | 2015-12-02 | 贵州大学 | Viscoelasticity composite sound insulating board |
| CN106320548A (en) * | 2016-11-02 | 2017-01-11 | 山西尚风抑风墙科技有限公司 | Manufacturing process of sound shielding device |
| CN106320548B (en) * | 2016-11-02 | 2019-05-21 | 山西尚风抑风墙科技有限公司 | Sound screening arrangement manufacturing process |
| CN107263967A (en) * | 2017-07-20 | 2017-10-20 | 北京海月星科技有限公司 | One kind sound insulation isolator and preparation method and application |
| CN107263967B (en) * | 2017-07-20 | 2019-07-16 | 北京海月星科技有限公司 | A kind of sound insulation isolator and the preparation method and application thereof |
| CN110176224A (en) * | 2019-06-20 | 2019-08-27 | 南京航空航天大学 | A kind of pyramid dot matrix enhancing cavity type underwater sound absorption structure |
| CN110176224B (en) * | 2019-06-20 | 2021-07-30 | 南京航空航天大学 | A Pyramid Lattice Enhanced Cavity Underwater Sound Absorption Structure |
| RU2770257C1 (en) * | 2021-09-17 | 2022-04-14 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | Controlled hydro-acoustic coating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |