CN204904826U - Embedded cylindrical cavity of binary overburden that absorbs sound - Google Patents
Embedded cylindrical cavity of binary overburden that absorbs sound Download PDFInfo
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- CN204904826U CN204904826U CN201520561991.0U CN201520561991U CN204904826U CN 204904826 U CN204904826 U CN 204904826U CN 201520561991 U CN201520561991 U CN 201520561991U CN 204904826 U CN204904826 U CN 204904826U
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Abstract
The utility model discloses an embedded cylindrical cavity of binary overburden that absorbs sound, including damping layer (1), enhancement layer (2) and noise -absorbing layer (3) that set gradually, laminate with the housing face of the underwater exercise body mutually in the one side of damping layer (1), it inlays and has hollow cylinder (5) to be array form on noise -absorbing layer (3). Noise -absorbing layer and hollow cylinder adopt that no material producing form, has overcome the not good enough problem of low frequency acoustic absorption performance that adopts the homogenous material to bring, the housing face of the one side of damping layer and the underwater exercise body laminates mutually, and effectively avoid absorbing sound overburden and underwater exercise body housing face's relative slip can also play the effect of damping sound absorption simultaneously, the enhancement layer makes whole sound absorption overburden have certain mechanical strength, noise -absorbing layer can adopt original material, through inlaying hollow cylinder for resonance frequency then descends to some extent, but noise -absorbing layer withstand voltage and other performances are unchangeable basically.
Description
Technical field
The utility model relates to a kind of device of vibration and noise reducing, specifically the embedded cylindrical cavity anechoic coating of a kind of binary, 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 resonant frequency of internal cavities just must be reduced.Select the material of low sheraing wave-wave speed can reduce the resonant frequency of cavity, but such material is generally softer, withstand voltage properties is very poor, can not use as the base material of anechoic coating.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.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of binary embedded cylindrical cavity anechoic coating, can effectively improve low frequency absorption performance, and have certain noise reduction performance concurrently, ensure the withstand voltage properties of anechoic coating simultaneously.
The purpose of this utility model is achieved through the following technical solutions:
The embedded cylindrical cavity anechoic coating of a kind of binary, 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 inlaid with hollow cylinder in array-like.
Preferably, described absorbent treatment is provided with sealing layer.Sealing layer is used for sealing described hollow cylinder.
Preferably, the endoporus of described hollow cylinder is straight cylindrical surfaces or circular conical surface.
Further, the cylindrical of described hollow cylinder is straight cylindrical surfaces or circular conical surface.
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, and described hollow cylinder adopts silicon rubber to make.
Preferably, 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, the beneficial effects of the utility model are as follows:
1, described absorbent treatment and hollow cylinder adopt no material to be made, and overcome the problem of the low frequency absorption poor performance adopting homogenous material to bring; The side of damping layer and the surface of shell of underwater moving body fit, and effectively 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; Enhancement Layer makes whole anechoic coating have certain mechanical strength; Absorbent treatment can adopt original material, by inlaying hollow cylinder, resonant frequency is then declined to some extent, but withstand voltage and other performance base of absorbent treatment is originally constant.
2, the endoporus cavity of hollow cylinder and cylindrical take different shapes, and make overlayer not only can improve low frequency absorption performance, effectively can also reduce the noise of underwater moving body self to external radiation, and structure are simple.
3, anechoic coating material described in the utility model 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 the utility model perspective view;
Fig. 2 is the utility model structure vertical view;
Fig. 3 is that Fig. 2 is along A-A cut-open view;
The structural representation that Fig. 4 is the endoporus of hollow cylinder described in the utility model when being circular conical surface;
The structural representation that Fig. 5 is the cylindrical of hollow cylinder described in the utility model when being circular conical surface;
Description of reference numerals: 1, damping layer; 2, enhancement Layer; 3, absorbent treatment; 4, sealing layer; 5, hollow cylinder.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, utility model is described further:
As shown in Figure 1, Figure 2 and Figure 3, the embedded cylindrical cavity anechoic coating of a kind of binary, comprise the damping layer 1, enhancement Layer 2, absorbent treatment 3 and the sealing layer 4 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 inlaid with hollow cylinder 5 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 4 adopt butyl rubber or polycarbamate to make, and described hollow cylinder 5 adopts silicon rubber to make, and the elastic modulus of described hollow cylinder 5 material is much smaller than the elastic modulus of absorbent treatment 3.
As shown in Figure 4, Figure 5, as further improvement of this embodiment, the endoporus of described hollow cylinder 5 is straight cylindrical surfaces or circular conical surface; The cylindrical of described hollow cylinder 5 is straight cylindrical surfaces or circular conical surface.The endoporus of hollow cylinder 5 and cylindrical are straight cylindrical surfaces or the face of cylinder,
Preferably, described damping layer 1, enhancement Layer 2, absorbent treatment 3 and sealing layer 4 are integrated hot-forming.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 4 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 detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. the embedded cylindrical cavity anechoic coating of binary, 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 inlaid with hollow cylinder (5) in array-like.
2. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 1, is characterized in that: described absorbent treatment (3) is provided with sealing layer (4).
3. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 1, is characterized in that: the endoporus of described hollow cylinder (5) is straight cylindrical surfaces or circular conical surface.
4. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 1, is characterized in that: the cylindrical of described hollow cylinder (5) is straight cylindrical surfaces or circular conical surface.
5. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 2, it is characterized in that: described damping layer (1) adopts butyl rubber to make, described enhancement Layer (2) adopts glass fabric to make, described absorbent treatment (3) and sealing layer (4) adopt butyl rubber or polycarbamate to make, and described hollow cylinder (5) adopts silicon rubber to make.
6. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 5, is characterized in that: described damping layer (1), enhancement Layer (2), absorbent treatment (3) and sealing layer (4) are integrated hot-forming.
7. the embedded cylindrical cavity anechoic coating of a kind of binary according to claim 5, is characterized in that: described damping layer (1), enhancement Layer (2), absorbent treatment (3) and sealing layer (4) successively by bonding agent bonding and one cold briquetting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561991.0U CN204904826U (en) | 2015-07-30 | 2015-07-30 | Embedded cylindrical cavity of binary overburden that absorbs sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520561991.0U CN204904826U (en) | 2015-07-30 | 2015-07-30 | Embedded cylindrical cavity of binary overburden that absorbs sound |
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| Publication Number | Publication Date |
|---|---|
| CN204904826U true CN204904826U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520561991.0U Expired - Fee Related CN204904826U (en) | 2015-07-30 | 2015-07-30 | Embedded cylindrical cavity of binary overburden that absorbs sound |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| 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 |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
-
2015
- 2015-07-30 CN CN201520561991.0U patent/CN204904826U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| CN106926518B (en) * | 2017-03-16 | 2019-09-10 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| 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 |
| CN113753173A (en) * | 2021-10-15 | 2021-12-07 | 中国人民解放军国防科技大学 | Sound insulation, vibration reduction and noise suppression multifunctional integrated metamaterial plate shell structure and preparation method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210730 |
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| CF01 | Termination of patent right due to non-payment of annual fee |