CN104505086B - A kind of underwater sound MULTILAYER COMPOSITE acoustic construction - Google Patents
A kind of underwater sound MULTILAYER COMPOSITE acoustic construction Download PDFInfo
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- CN104505086B CN104505086B CN201410783371.1A CN201410783371A CN104505086B CN 104505086 B CN104505086 B CN 104505086B CN 201410783371 A CN201410783371 A CN 201410783371A CN 104505086 B CN104505086 B CN 104505086B
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Abstract
The invention belongs to Underwater Acoustics Engineering technical field, proposes a kind of underwater sound MULTILAYER COMPOSITE acoustic construction.A kind of underwater sound MULTILAYER COMPOSITE acoustic construction proposed has；By longeron（6）, crossbeam（1）Connect and compose support frame（3）；Support frame（3）Outside be provided with absorbent treatment（2）；Support frame（3）Center cavity in be filled with sound insulating layer（4）With fluid cavity（5）The resonator of formation, wherein sound insulating layer（4）At least two layers；Fluid cavity（5）At least one；Sound insulating layer（4）It is interior to be filled with balance weight body（7）, to sound insulating layer（4）It is fixed, and plays a part of adjusting buoyancy and gravity.The present invention have easy for installation, structure type simply, broadband is all with excellent sound absorption performance the characteristics of, can be applied in the fields such as anechoic tank, ship acoustic sound room.
Description
Technical field
The invention belongs to Underwater Acoustics Engineering technical field, and in particular to a kind of underwater sound MULTILAYER COMPOSITE acoustic construction.
Background technology
Up to now, the sound absorption for underwater acoustic wave or sound insulating structure generally by the single rubber material with height loss or
Polyurethane material forms, and is fabricated to tabular or cone shape, to be also provided with cavity structure inside enhancing acoustical absorptivity.Pass through material
And meeting after structure optimization adjustment, this class formation can obtain excellent sound absorbing capabilities in certain frequency band.But this class formation absorbs sound
Frequency band is narrower, if wanting to obtain broadband acoustically effective, its structural thickness or length must long enoughs.And its feature is more single
One, be typically only capable to sound absorption can not anti-sound or sound insulation, exist sound leakage phenomenon occur.In addition, most of underwater acoustic materials use glue
Glutinous agent or coating method are arranged on rigid structure surface, complicated construction technique, engineering time length.
The content of the invention
In order to solve the above technical problems, the purpose of the present invention is to propose to a kind of underwater sound MULTILAYER COMPOSITE acoustic construction.
The present invention adopts the following technical scheme that to complete above-mentioned purpose：
A kind of underwater sound MULTILAYER COMPOSITE acoustic construction, described MULTILAYER COMPOSITE acoustic construction have support frame；Described
Support frame is the rectangular frame of the hollow structure connected and composed by longeron, crossbeam；It is provided with the outside of the support frame
Absorbent treatment；The resonator formed in the center cavity of the support frame filled with sound insulating layer with fluid cavity, wherein it is described every
Sound layer is at least two layers；Described fluid cavity is at least one, and described fluid cavity is between adjacent two layers sound insulating layer, or position
Between sound insulating layer and the internal face of support frame, it can be formed not by adjusting position layout and sound insulating layer, the quantity of fluid cavity
Same cavity resonator structure, so as to which the sound absorption of the resonance of multiple specific frequencies can be realized；Balance weight body is filled with described sound insulating layer, to
Sound insulating layer is fixed, and plays a part of adjusting buoyancy and gravity.
Described absorbent treatment is connected to the outside wall surface of support frame using bolt or hook suspension or by the way of being directly bonded
On.
Described absorbent treatment is rubber or polyurethane material with high-damping in-fighting, and acoustic impedance approaches with aqueous phase.
Described absorbent treatment is coniform or prism-shaped or rectangular block shape with hollow-core construction.
Described absorbent treatment thickness is 50~300mm, and the thickness of absorbent treatment is thicker, lower more than its frequency range that effectively absorbs sound.
The thickness of adjacent two layers sound insulating layer is different in support frame rectangular frame or material is different or thickness, material not
Together, avoiding the generation of sound coincidence effect, the generation of anti-leak-stopping voice phenomenon.
Described balance weight body is concrete or lead or stone or bloom.
The thickness of the fluid cavity is between 50~200mm.
A kind of underwater sound MULTILAYER COMPOSITE acoustic construction proposed by the present invention, support frame inside filling thickness not wait or
The different sound insulating layer of material, absorbent treatment is set in the outside of support frame, support frame is had the function of sound absorption and sound insulation concurrently, it is real
The past interflection of sound wave is showed, has added the propagation distance of sound wave, the dissipation of sound wave is realized by high in-fighting sound-absorbing material；Set
There is fluid cavity, fluid cavity, which is filled between water and sound insulating layer wall, can form acoustic resonant cavity, be realized by resonance Energy Dissipation Mechanism special
Determine the wave absorption under frequency；The sound insulating layer of setting can obstruct propagation of the sound wave to opposite side, reduce acoustic wave energy leakage phenomenon
Generation, so as to realize that high acoustic absorption, sound insulation act in broadband by a variety of mechanisms of action, such a acoustic construction form can be
Acoustic absorptivity ＞ 99% in 2KHz to 100KHz, oise insulation factor are not less than 30dB；In summary, the present invention have structure type it is simple,
It is easy for installation, there is the characteristics of excellent sound absorption performance in broadband, can be answered in the fields such as anechoic tank, ship acoustic sound room
With.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the first structure type that sound insulating layer coordinates with fluid cavity in the present invention
Fig. 3 is second of the structure type that sound insulating layer coordinates with fluid cavity in the present invention.
Fig. 4 is the third structure type that sound insulating layer coordinates with fluid cavity in the present invention.
In figure：1st, crossbeam, 2, absorbent treatment, 3, support frame, 4, sound insulating layer, 5, fluid cavity, 6, longeron, 7, balance weight body.
Embodiment
The present invention is illustrated with reference to the drawings and specific embodiments：
As shown in figure 1, simultaneously reference picture 2, a kind of underwater sound MULTILAYER COMPOSITE acoustic construction, described MULTILAYER COMPOSITE acoustic construction
With support frame 3；Described support frame 3 is the rectangular frame of the hollow structure connected and composed by longeron 6, crossbeam 1；It is described
The outside of support frame 3 is provided with absorbent treatment 2；Described absorbent treatment 2 is rubber or polyurethane material with high-damping in-fighting
Material, acoustic impedance approach with aqueous phase, and described absorbent treatment 2 is the coniform or prism-shaped or rectangular block shape of hollow-core construction；The implementation
Absorbent treatment 2 described in example is the coniform of hollow-core construction；The thickness of the absorbent treatment 2 is 50~300mm, the thickness of absorbent treatment
It is thicker, it is lower more than its frequency range that effectively absorbs sound；Described absorbent treatment 2 is connected using bolt or hook suspension or by the way of being directly bonded
In the outside wall surface of support frame；Formed in the center cavity of the support frame 3 filled with sound insulating layer 4 with fluid cavity 5 humorous
Shake chamber, and in the embodiment, described sound insulating layer 4 is two layers；The thickness difference or material difference or thickness, material of two layers of sound insulating layer
It is different, to avoid the generation of sound coincidence effect, the generation of anti-leak-stopping voice phenomenon；Described fluid cavity 5 is one, the stream
The thickness of body cavity is between 50~200mm；Sound insulating layer 4 described in two layers is affixed on the internal face of support frame 3 respectively, described
Fluid cavity 5 is between two layers of sound insulating layer 4；Balance weight body 7 is filled with described sound insulating layer 4, to consolidate to sound insulating layer 4
It is fixed, and play a part of adjusting buoyancy and gravity；Described balance weight body is concrete or lead or stone or bloom.
As shown in figure 3, the agent structure of the embodiment, with embodiment 1, in the embodiment, described sound insulating layer 4 is two layers；
The thickness of two layers of sound insulating layer is different or material is different or thickness, material are different, to avoid the generation of sound coincidence effect, prevents
Leak the generation of voice phenomenon；Sound insulating layer 4 described in two layers is located in the center cavity of support frame, and the sound insulating layer 4 described in two layers
There is gap between corresponding support frame internal face；Described fluid cavity 5 is two, and the fluid cavity 5 described in two divides
Not between sound insulating layer 4 and the internal face of support frame.
As shown in figure 4, the agent structure of the embodiment, with embodiment 1, in the embodiment, described sound insulating layer 4 is two layers；
The thickness of two layers of sound insulating layer is different or material is different or thickness, material are different, to avoid the generation of sound coincidence effect, prevents
Leak the generation of voice phenomenon；Described fluid cavity 5 is two, and the fluid cavity 5 described in two is arranged at intervals with two sound insulating layers 4.
Above-described is only the preferred embodiment of the principle of the invention.Under the premise without departing from the principles of the invention, nothing
The technical characteristic that creative work can just be associated, various modifications and improvements can be made need to be passed through, these changes all should
It is considered as equivalent feature, still falls within protection scope of the present invention.
Claims (8)
- A kind of 1. underwater sound MULTILAYER COMPOSITE acoustic construction, it is characterised in that：Described MULTILAYER COMPOSITE acoustic construction has support rib Frame (3)；Described support frame (3) is the rectangular frame of the hollow structure connected and composed by longeron (6), crossbeam (1)；The branch Absorbent treatment (2) is provided with the outside of support bone frame (3)；In the center cavity of the support frame (3) filled with sound insulating layer (4) with The resonator that fluid cavity (5) is formed, wherein described sound insulating layer (4) is at least two layers；Described fluid cavity (5) is at least one Individual, described fluid cavity (5) is located between adjacent two layers sound insulating layer (4), or positioned at the interior of sound insulating layer (4) and support frame (3) Between wall, different cavity resonator structures can be formed by adjusting position layout and sound insulating layer, the quantity of fluid cavity, so as to realize The resonance sound absorption of multiple specific frequencies；Balance weight body (7) is filled with described sound insulating layer (4), to consolidate to sound insulating layer (4) It is fixed, and play a part of adjusting buoyancy and gravity.
- A kind of 2. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Described absorbent treatment (2) it is connected to using bolt or hook suspension or by the way of being directly bonded in the outside wall surface of support frame.
- A kind of 3. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Described absorbent treatment (2) it is rubber or polyurethane material with high-damping in-fighting, acoustic impedance approaches with aqueous phase.
- A kind of 4. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Described absorbent treatment (2) it is the coniform or prism-shaped or rectangular block shape of hollow-core construction.
- A kind of 5. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Described absorbent treatment (2) thickness is 50~300mm, and the thickness of absorbent treatment is thicker, and its frequency range that effectively absorbs sound is lower.
- A kind of 6. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Support frame rectangle frame The thickness of adjacent two layers sound insulating layer is different in frame or material is different or thickness, material are different, to avoid sound coincidence effect Occur, the generation of anti-leak-stopping voice phenomenon.
- A kind of 7. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：Described balance weight body is Concrete or lead or stone or bloom.
- A kind of 8. underwater sound MULTILAYER COMPOSITE acoustic construction according to claim 1, it is characterised in that：The thickness of the fluid cavity Spend between 50~200mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783371.1A CN104505086B (en) | 2014-12-18 | 2014-12-18 | A kind of underwater sound MULTILAYER COMPOSITE acoustic construction |
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| CN201410783371.1A CN104505086B (en) | 2014-12-18 | 2014-12-18 | A kind of underwater sound MULTILAYER COMPOSITE acoustic construction |
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| CN104505086A CN104505086A (en) | 2015-04-08 |
| CN104505086B true CN104505086B (en) | 2018-01-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110853609B (en) * | 2019-11-12 | 2022-12-13 | 哈尔滨工程大学 | Underwater acoustic covering layer based on coupling resonance of multilayer scatterers and cavity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7266046B1 (en) * | 2006-06-26 | 2007-09-04 | The United States Of America As Represented By The Secretary Of The Navy | Miniature low frequency acoustic transmitter |
| CN200990204Y (en) * | 2006-12-21 | 2007-12-12 | 中国船舶重工集团公司第七○一研究所 | Hornform cavity underwater sound absorption board |
| CN202841503U (en) * | 2012-07-27 | 2013-03-27 | 广州长嘉电子有限公司 | Fat plane loudspeaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7413053B2 (en) * | 2006-01-25 | 2008-08-19 | Siemens Power Generation, Inc. | Acoustic resonator with impingement cooling tubes |
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2014
- 2014-12-18 CN CN201410783371.1A patent/CN104505086B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7266046B1 (en) * | 2006-06-26 | 2007-09-04 | The United States Of America As Represented By The Secretary Of The Navy | Miniature low frequency acoustic transmitter |
| CN200990204Y (en) * | 2006-12-21 | 2007-12-12 | 中国船舶重工集团公司第七○一研究所 | Hornform cavity underwater sound absorption board |
| CN202841503U (en) * | 2012-07-27 | 2013-03-27 | 广州长嘉电子有限公司 | Fat plane loudspeaker |
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| CN104505086A (en) | 2015-04-08 |
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