CN105006226A - Cylindrical cavity combination sound-absorbing coating - Google Patents
Cylindrical cavity combination sound-absorbing coating Download PDFInfo
- Publication number
- CN105006226A CN105006226A CN201510457284.1A CN201510457284A CN105006226A CN 105006226 A CN105006226 A CN 105006226A CN 201510457284 A CN201510457284 A CN 201510457284A CN 105006226 A CN105006226 A CN 105006226A
- Authority
- CN
- China
- Prior art keywords
- sound
- absorbing hole
- layer
- absorbing
- cylindrical cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a cylindrical cavity combination sound-absorbing coating which comprises a damping layer (1), a reinforcing layer (2) and a sound-absorbing layer (3), wherein the damping layer (1), the reinforcing layer (2) and the sound-absorbing layer (3) are sequentially arranged. One side of the damping layer (1) fits the surface of the casing body of an underwater moving body. Sound-absorbing holes (4) are distributed in an array in the sound-absorbing layer (3). According to the invention, the damping layer (1), the reinforcing layer (2) and the sound-absorbing layer (3) are made of different materials; one side of the damping layer fits the surface of the casing body of the underwater moving body; relative sliding of the sound-absorbing coating and the surface of the casing body of the underwater moving body is effectively avoided; the effects of damping and sound absorbing are realized; through the reinforcing layer, the whole sound-absorbing coating has a certain degree of mechanical strength; and the sound-absorbing layer has a great broadband sound-absorbing performance.
Description
Technical field
What the present invention relates to is a kind of device of vibration and noise reducing, and specifically the combined anechoic coating of a kind of cylindrical cavity, belongs to vibration and noise reducing apparatus field.
Background technology
Sound wave be only in ocean can the form of energy of long-distance communications, in current and predictable future, undersea detection will rely on the change of detection sound field.Therefore, the major measure that self radiated noise and sound reflection characteristics just become underwater moving body Sound stealth is reduced.
Reduce self radiated noise and sound reflection characteristics is a systematic engineering of business, need to carry out overall acoustic design.Anechoic coating, as the outermost acoustic protection layer of underwater moving body, can not only absorb most detection sound wave, can also reduce self-noise to a certain extent to external radiation.
Current underwater sound absorption overlayer is made up of the single elastomeric material with high loss usually, and be made into and include the flat board of given shape cavity as cylindrical cavity, this class formation has good sound absorbing capabilities in certain frequency band.But this class formation sound sucting band is narrower, obtain broad band sound absorption effect if want, its structural thickness is sufficiently long.And the low frequency absorption performance of this class formation is not good enough yet, to improve low frequency absorption characteristic, the porosity that just must increase cavity radius or increase shared by cavity, but porosity increase can cause again the compressive property of structure to decline.In addition, most of anechoic coating adopts adhesive or coating method to be arranged on rigid structure surface, complicated construction technique, and the engineering time is long.
The theory and practice research of the combined anechoic coating of cylindrical cavity shows, its broad band sound absorption performance is obvious, and effect of low-frequency sound absorption is also significantly improved.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of cylindrical cavity combined anechoic coating, effectively can widen sound sucting band, improve low frequency absorption performance, and have certain noise reduction performance concurrently.
The object of the invention is to be achieved through the following technical solutions:
The combined anechoic coating of a kind of cylindrical cavity, comprise the damping layer, enhancement Layer and the absorbent treatment that set gradually, the side of described damping layer and the surface of shell of underwater moving body fit, and described absorbent treatment is distributed with sound-absorbing hole in array-like.
Preferably, described absorbent treatment is provided with sealing layer.Sealing layer is used for sealing described sound-absorbing hole.
Further, described sound-absorbing hole comprises the first sound-absorbing hole and the second sound-absorbing hole, and the aperture of described first sound-absorbing hole is less than the aperture of the second sound-absorbing hole.The first sound-absorbing hole that aperture is little, can ensure good high frequency sound absorbing capabilities, but low frequency absorption is poor; The second sound-absorbing hole that aperture is large, can ensure good low frequency absorption performance, but high frequency sound absorption is poor; The structure adopting the first sound-absorbing hole and the second sound-absorbing hole to cooperatively interact, can widen frequency band, takes into account high and low frequency sound absorption.
Optionally, the inside surface of described first sound-absorbing hole is straight cylindrical surfaces or circular conical surface.
Optionally, the inside surface of described second sound-absorbing hole is straight cylindrical surfaces or circular conical surface.
Optionally, the first sound-absorbing hole around described each second sound-absorbing hole is square distribution, and the first sound-absorbing hole is positioned at the summit place of described square.
Optionally, the first sound-absorbing hole around described each second sound-absorbing hole is regular hexagon distribution, and the first sound-absorbing hole is positioned at described orthohexagonal summit place.
Preferably, described damping layer adopts butyl rubber to make, and described enhancement Layer adopts glass fabric to make, and described absorbent treatment and sealing layer adopt butyl rubber or polycarbamate to make.
Further, described damping layer, enhancement Layer, absorbent treatment and sealing layer are integrated hot-forming.
Optionally, described damping layer, enhancement Layer, absorbent treatment and sealing layer successively by bonding agent bonding and one cold briquetting.
Compared with prior art, beneficial effect of the present invention is as follows:
1, described damping layer, enhancement Layer and absorbent treatment adopt no material to be made, the side of damping layer and the surface of shell of underwater moving body fit, effectively avoid the relative sliding of anechoic coating and underwater moving body surface of shell, the effect of vibration damping sound absorption can also be played simultaneously.Enhancement Layer makes whole anechoic coating have certain mechanical strength.
The structure that first sound-absorbing hole of the employing different pore size 2, on absorbent treatment and the second sound-absorbing hole cooperatively interact, can widen frequency band, takes into account high and low frequency sound absorption.
3, the first sound-absorbing hole and the second sound-absorbing hole are respectively in cylindric or coniform, except can effectively improve except sound absorbing capabilities, underwater moving body self noise also can be suppressed to external radiation, and structure is simply convenient to make.
4, the first sound-absorbing hole and the second sound-absorbing hole are different distribution shapes, make absorbent treatment have different porositys, can meet sound absorbing capabilities requirement under the different environment for use of underwater moving body.
5, anechoic coating material of the present invention easily obtains, adopts integrated hot pressing formed or the bonding rear cold briquetting of bonding agent, and moulding process is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is structure vertical view of the present invention;
Fig. 3 is that Fig. 2 is along A-A cut-open view;
The structural representation that Fig. 4 is the first sound-absorbing hole of the present invention and the second sound-absorbing hole when being coniform;
Schematic diagram during Fig. 5 to be the first sound-absorbing hole of the present invention be regular hexagon distribution;
Description of reference numerals: 1, damping layer; 2, enhancement Layer; 3, absorbent treatment; 4, sound-absorbing hole; 41, the first sound-absorbing hole; 42, the second sound-absorbing hole; 5, sealing layer.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, invention is described further:
As shown in Figure 1, Figure 2 and Figure 3, the combined anechoic coating of a kind of cylindrical cavity, comprise the damping layer 1, enhancement Layer 2, absorbent treatment 3 and the sealing layer 5 that set gradually, the described side of damping layer 1 and the surface of shell of underwater moving body fit, and described absorbent treatment 3 is distributed with sound-absorbing hole 4 in array-like; Described damping layer 1 adopts butyl rubber to make, and damping layer 1 effectively can avoid the relative sliding of anechoic coating and underwater moving body surface of shell, can also play the effect of vibration damping sound absorption simultaneously; Described enhancement Layer 2 adopts glass fabric to make, and enhancement Layer makes whole anechoic coating have certain mechanical strength; Described absorbent treatment 3 and sealing layer 5 adopt butyl rubber or polycarbamate to make, and sealing layer 5 is for sealing described sound-absorbing hole.
As further improvement of this embodiment, described sound-absorbing hole 4 comprises the first sound-absorbing hole 41 and the second sound-absorbing hole 42, and the aperture of described first sound-absorbing hole 41 is less than the aperture 42 of the second sound-absorbing hole.The first sound-absorbing hole 41 that aperture is little, can ensure good high frequency sound absorbing capabilities, but low frequency absorption is poor; The second sound-absorbing hole 42 that aperture is large, can ensure good low frequency absorption performance, but high frequency sound absorption is poor; The structure adopting the first sound-absorbing hole 41 and the second sound-absorbing hole 42 to cooperatively interact, can widen frequency band, takes into account high and low frequency sound absorption.
As shown in Figure 3 and Figure 4, further, the inside surface of described first sound-absorbing hole 41 is straight cylindrical surfaces or circular conical surface, the inside surface of described second sound-absorbing hole 42 is straight cylindrical surfaces or circular conical surface, the first sound-absorbing hole 41 of similar shape and the second sound-absorbing hole 42 is adopted to cooperatively interact, effectively can reduce the noise of underwater moving body self to external radiation, and structure is simple.
Further, the first sound-absorbing hole 41 distribution in square around described each second sound-absorbing hole 42, and the first sound-absorbing hole 41 is positioned at the summit place of described square.
As shown in Figure 5, as a kind of optional embodiment, the first sound-absorbing hole 41 distribution in regular hexagon around described each second sound-absorbing hole 42, and the first sound-absorbing hole position 41 is in described orthohexagonal summit place.First sound-absorbing hole 41 and the second sound-absorbing hole 42, in different distribution shapes, make absorbent treatment 3 have different porositys, can meet sound absorbing capabilities requirement under the different environment for use of underwater moving body.
Preferably, described damping layer 1, enhancement Layer 2, absorbent treatment 3 and sealing layer 5 adopt integrated hot pressing formed, and therefore the moulding process of anechoic coating is simple, cost is low.
As another kind of optional embodiment, described damping layer 1, enhancement Layer 2, absorbent treatment 3 and sealing layer 5 successively by bonding agent bonding and one cold briquetting.That is, bonding agent is coated on respect to one another of every adjacent two layers respectively, bonding complete after one cold briquetting, therefore firmly bonding between each layer of anechoic coating.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the combined anechoic coating of cylindrical cavity, it is characterized in that: comprise the damping layer (1), enhancement Layer (2) and the absorbent treatment (3) that set gradually, the side of described damping layer (1) and the surface of shell of underwater moving body fit, and described absorbent treatment (3) is upper is distributed with sound-absorbing hole (4) in array-like.
2. the combined anechoic coating of a kind of cylindrical cavity according to claim 1, is characterized in that: described absorbent treatment (3) is provided with sealing layer (5).
3. the combined anechoic coating of a kind of cylindrical cavity according to claim 1, it is characterized in that: described sound-absorbing hole (4) comprises the first sound-absorbing hole (41) and the second sound-absorbing hole (42), the aperture of described first sound-absorbing hole (41) is less than the aperture of the second sound-absorbing hole (42).
4. the combined anechoic coating of a kind of cylindrical cavity according to claim 3, is characterized in that: described first sound-absorbing hole (41) inside surface is straight cylindrical surfaces or circular conical surface.
5. the combined anechoic coating of a kind of cylindrical cavity according to claim 3, is characterized in that: described second sound-absorbing hole (42) inside surface is straight cylindrical surfaces or circular conical surface.
6. the combined anechoic coating of a kind of cylindrical cavity according to claim 3, it is characterized in that: described each second sound-absorbing hole (42) the first sound-absorbing hole (41) around distributes in square, and the first sound-absorbing hole (41) is positioned at the summit place of described square.
7. the combined anechoic coating of a kind of cylindrical cavity according to claim 3, it is characterized in that: described each second sound-absorbing hole (42) the first sound-absorbing hole (41) around distributes in regular hexagon, and the first sound-absorbing hole (41) is positioned at described orthohexagonal summit place.
8. the combined anechoic coating of a kind of cylindrical cavity according to claim 1 and 2, it is characterized in that: described damping layer (1) adopts butyl rubber to make, described enhancement Layer (2) adopts glass fabric to make, and described absorbent treatment (3) and sealing layer (5) adopt butyl rubber or polycarbamate to make.
9. the combined anechoic coating of a kind of cylindrical cavity according to claim 8, is characterized in that: described damping layer (1), enhancement Layer (2), absorbent treatment (3) and sealing layer (5) are integrated hot-forming.
10. the combined anechoic coating of a kind of cylindrical cavity according to claim 8, is characterized in that: described damping layer (1), enhancement Layer (2), absorbent treatment (3) and sealing layer (5) successively by bonding agent bonding and one cold briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457284.1A CN105006226A (en) | 2015-07-30 | 2015-07-30 | Cylindrical cavity combination sound-absorbing coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510457284.1A CN105006226A (en) | 2015-07-30 | 2015-07-30 | Cylindrical cavity combination sound-absorbing coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105006226A true CN105006226A (en) | 2015-10-28 |
Family
ID=54378874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510457284.1A Pending CN105006226A (en) | 2015-07-30 | 2015-07-30 | Cylindrical cavity combination sound-absorbing coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105006226A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004948A (en) * | 2018-01-09 | 2018-05-08 | 杨小武 | The enhanced GRC sound insulationg boards of monoblock type |
| CN108492814A (en) * | 2018-03-28 | 2018-09-04 | 贵州大学 | A kind of combination cavity type acoustic stimulation based on impedance transition mechanism type |
| CN109386065A (en) * | 2017-08-11 | 2019-02-26 | 泰奇想股份有限公司 | Composite leveling expansion type sound-absorbing board with stretching convex part and leveling convex part |
| CN109754776A (en) * | 2019-03-20 | 2019-05-14 | 哈尔滨工程大学 | A kind of broad band low frequency anechoic coating of embedded cylindrical cavity array |
| CN110942760A (en) * | 2019-11-12 | 2020-03-31 | 哈尔滨工程大学 | Underwater acoustic covering layer based on functional gradient plate |
| CN112562622A (en) * | 2020-12-11 | 2021-03-26 | 哈尔滨工程大学 | Low-frequency sound absorption covering layer containing gradient cylinder cavity |
| CN112829387A (en) * | 2021-02-26 | 2021-05-25 | 彩虹无人机科技有限公司 | Sound-absorbing tile attached to outer surface of underwater vehicle shell and underwater vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990205Y (en) * | 2006-12-27 | 2007-12-12 | 中国船舶重工集团公司第七○一研究所 | Conical cavity underwater acoustic board |
| CN201011616Y (en) * | 2006-09-12 | 2008-01-23 | 浙江大学 | Perforated plate for improving acoustic absorption property |
| CN102354493A (en) * | 2011-05-27 | 2012-02-15 | 哈尔滨工程大学 | Controllable underwater acoustic board |
| CN204323243U (en) * | 2014-11-24 | 2015-05-13 | 比亚迪股份有限公司 | For the sound absorption part of electronlmobil |
-
2015
- 2015-07-30 CN CN201510457284.1A patent/CN105006226A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201011616Y (en) * | 2006-09-12 | 2008-01-23 | 浙江大学 | Perforated plate for improving acoustic absorption property |
| CN200990205Y (en) * | 2006-12-27 | 2007-12-12 | 中国船舶重工集团公司第七○一研究所 | Conical cavity underwater acoustic board |
| CN102354493A (en) * | 2011-05-27 | 2012-02-15 | 哈尔滨工程大学 | Controllable underwater acoustic board |
| CN204323243U (en) * | 2014-11-24 | 2015-05-13 | 比亚迪股份有限公司 | For the sound absorption part of electronlmobil |
Non-Patent Citations (2)
| Title |
|---|
| 吕玉恒 等: "《噪声与振动控制设备及材料选用手册 （第二版）》", 31 May 1999 * |
| 陶猛 等: "组合腔型吸声覆盖层的声学特性分析", 《上海交通大学学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386065A (en) * | 2017-08-11 | 2019-02-26 | 泰奇想股份有限公司 | Composite leveling expansion type sound-absorbing board with stretching convex part and leveling convex part |
| CN108004948A (en) * | 2018-01-09 | 2018-05-08 | 杨小武 | The enhanced GRC sound insulationg boards of monoblock type |
| CN108492814A (en) * | 2018-03-28 | 2018-09-04 | 贵州大学 | A kind of combination cavity type acoustic stimulation based on impedance transition mechanism type |
| CN109754776A (en) * | 2019-03-20 | 2019-05-14 | 哈尔滨工程大学 | A kind of broad band low frequency anechoic coating of embedded cylindrical cavity array |
| CN110942760A (en) * | 2019-11-12 | 2020-03-31 | 哈尔滨工程大学 | Underwater acoustic covering layer based on functional gradient plate |
| CN112562622A (en) * | 2020-12-11 | 2021-03-26 | 哈尔滨工程大学 | Low-frequency sound absorption covering layer containing gradient cylinder cavity |
| CN112829387A (en) * | 2021-02-26 | 2021-05-25 | 彩虹无人机科技有限公司 | Sound-absorbing tile attached to outer surface of underwater vehicle shell and underwater vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105006226A (en) | Cylindrical cavity combination sound-absorbing coating | |
| CN104966511A (en) | Binary embedded cylinder cavity sound absorption covering layer | |
| Gao et al. | Acoustic metamaterials for noise reduction: a review | |
| CN108133700A (en) | A kind of acoustics black hole vibration and noise reducing device | |
| CN108417195B (en) | Medium-low frequency sound absorption metamaterial structure based on resonant cavity | |
| WO2010089398A3 (en) | Acoustic absorber, acoustic transducer, and method for producing an acoustic absorber or an acoustic transducer | |
| CN104141720A (en) | Square grid plate with vibration isolation characteristic | |
| Wu et al. | Acoustic absorbers at low frequency based on split-tube metamaterials | |
| CN105109122A (en) | Viscoelasticity composite sound insulating board | |
| CN204926787U (en) | Combined sound absorption overburden of cylindrical cavity | |
| CN204904826U (en) | Embedded cylindrical cavity of binary overburden that absorbs sound | |
| CN108492814A (en) | A kind of combination cavity type acoustic stimulation based on impedance transition mechanism type | |
| CN114141223A (en) | Broadband sound insulation acoustic metamaterial structure based on acoustic black holes | |
| CN203834714U (en) | Sound insulation building board | |
| CN208422400U (en) | A kind of noise isolating plate | |
| CN106847253A (en) | A kind of honeycomb cavity structure acoustic stimulation | |
| CN206353443U (en) | A kind of locally resonant type low frequency sound-absorbing porous material | |
| CN105118497A (en) | Tube-bundle perforated panel and spring cyclic structure sound absorption apparatus | |
| CN206711599U (en) | A kind of cycle born of the same parents structure composite sound panel | |
| KR101804694B1 (en) | Acoustic metamaterials structures for impact and vibration mitigation | |
| CN106801480B (en) | A kind of sound-absorbing ceramic clad plate | |
| CN105989829A (en) | Multi-layer diaphragm type composite resonance sound absorption module | |
| CN206552208U (en) | A kind of acoustic stimulation beneficial to ship vibration damping sound insulation under water | |
| CN105620697A (en) | Multilayer material combined cavity anechoic tile | |
| CN205033651U (en) | Compound sound insulation board of viscoplasticity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151028 |
|
| RJ01 | Rejection of invention patent application after publication |