CN104499503B - A kind of anechoic tank, packaged type absorbs sound partition wall - Google Patents
A kind of anechoic tank, packaged type absorbs sound partition wall Download PDFInfo
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- CN104499503B CN104499503B CN201410783408.0A CN201410783408A CN104499503B CN 104499503 B CN104499503 B CN 104499503B CN 201410783408 A CN201410783408 A CN 201410783408A CN 104499503 B CN104499503 B CN 104499503B
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- sound absorption
- partition wall
- circular cone
- skeleton
- sound
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- 238000005192 partition Methods 0.000 title claims abstract description 54
- 238000010521 absorption reaction Methods 0.000 claims abstract description 94
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 235000000396 iron Nutrition 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims abstract 2
- 229920001971 elastomer Polymers 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 21
- 239000000725 suspension Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920006327 polystyrene foam Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010003084 Areflexia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
- E04H4/14—Parts, details or accessories not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
Abstract
The invention belongs to Underwater Acoustics Engineering technical field, propose a kind of anechoic tank, packaged type and to absorb sound partition wall.A kind of anechoic tank, packaged type sound absorption partition wall proposed is suspended in anechoic tank, (16) by walking mechanism (5), and is moving along the length direction of anechoic tank, (16) with walking mechanism (5); Sound absorption partition wall (1) includes box beam (2), anyhow skeleton (6) and concrete balancing weight; The both sides of top slat iron (7), perpendicular skeleton (8) all hang sound absorbing member (9); The internal cavities of top slat iron (7), perpendicular skeleton (8) is installed has sound absorption or soundproof course (14); Upper box beam (2) is connected to the main body frame of the top formation rigid unitary of skeleton (6) anyhow; Concrete balancing weight is arranged between many top slat irons (7) and many perpendicular skeletons (8).Invention achieves the object of the quiet noise elimination to underwater acoustic wave, have can move fast, form of structure is simple, the feature of long service life.
Description
Technical field
The invention belongs to Underwater Acoustics Engineering technical field, be specifically related to the portable sound absorption partition wall of a kind of anechoic tank.
Background technology
Up to now, for the sound absorption of underwater acoustic wave or partiting sound member much, but this type of acoustic member adopts bonding, hang to be fixedly mounted on rigid steel structure or concrete surface, and self not bear weight usually, also can not arbitrarily movement, more can not bear large running load; Its function is also comparatively single, can not have sound absorption or sound insulation function concurrently simultaneously.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of anechoic tank, packaged type and to absorb sound partition wall.
The present invention adopts following technical scheme for completing above-mentioned purpose:
A kind of anechoic tank, packaged type absorbs sound partition wall, and described sound absorption partition wall is arranged in anechoic tank, and the two side walls of the both sides of described sound absorption partition wall, bottom surface and anechoic tank, all has gap between bottom surface; The two ends of described sound absorption partition wall upper surface are respectively arranged with walking mechanism; The guide rail kissing of described walking mechanism and anechoic tank, upper surface is joined, and described sound absorption partition wall is suspended in anechoic tank, by walking mechanism, and can moves at the length direction along anechoic tank, with walking mechanism; Described sound absorption partition wall includes box beam, anyhow skeleton and concrete balancing weight; Described skeleton is anyhow erect by many top slat irons and Duo Gen the rectangular frame that skeleton connects and composes; The both sides of described skeleton anyhow all hang sound absorbing member; Sound absorption or soundproof course are installed in the rectangular frame of described skeleton anyhow; Described in described upper box beam is connected to, the top of skeleton forms the main body frame of structure anyhow, the uniform force of main body frame, and good rigidly, possesses enough bearing strengths and bending resistance, can bear large dynamic load(loading); Described concrete balancing weight is arranged between many top slat irons and many perpendicular skeletons, in order to regulate deadweight and the body of wall buoyant equilibrium of sound absorption partition wall body of wall, deadweight is made to be greater than buoyancy, ensure that sound absorption partition wall security of operation is steady, concrete balancing weight also plays the function of sound insulation or sound absorption material in fixing top slat iron, perpendicular skeleton simultaneously.
Described sound absorbing member includes sound absorption circular cone, circular cone link plate and suspension member; Described circular cone link plate has multiple through hole passed in order to the circular cone that absorbs sound; Described sound absorption circular cone is multiple, and multiple sound absorption circular cone is arranged on described circular cone link plate; Described circular cone link plate is suspended on the outside of top slat iron, perpendicular skeleton by suspension member.
Described sound absorbing member includes sound absorption circular cone, high frequency rubber tile, circular cone link plate and suspension member; Described circular cone link plate, high frequency rubber tile are there is multiple through hole passed in order to the circular cone that absorbs sound; Described high frequency rubber tile is arranged on the outside of circular cone link plate; Described sound absorption circular cone is multiple, is each passed through high frequency rubber tile and is arranged on circular cone link plate; Described circular cone link plate passes through
Suspension member is suspended on top slat iron, the outside of perpendicular skeleton is connected.
The thickness of described high frequency rubber tile is 4-10mm.
Described sound absorption circular cone adopts a kind of in oval cone, short circular cone or both combinations.
The diameter of described oval cone is 50-80mm, and length is 300-800mm.
The diameter of described short circular cone is 30-45mm, and length is 200-400mm.
Anyhow the described sound absorption in skeleton rectangular frame or soundproof course are multilayer, and the thickness of adjacent two layers sound absorption or soundproof course is different or material is different or thickness, material are all different, in order to the generation of anti-leak-stopping voice phenomenon.
Anyhow the described sound absorption in skeleton rectangular frame or soundproof course are multilayer, have fluid cavity, form resonance chamber structure between adjacent two layers sound absorption or soundproof course.
Anyhow the described sound absorption in skeleton rectangular frame or soundproof course are multilayer, sound absorption or have fluid cavity between soundproof course and the internal face of skeleton rectangular frame anyhow, form resonance chamber structure.
The sound absorption material of the material of described sound absorption or soundproof course to be thickness be 50-200mm, sound absorption material is polyvinyl chloride or polystyrene foam plastics or polyurethane foam plastics or phenol formaldehyde foam or epoxy resin plastics.
The portable sound absorption partition wall of a kind of anechoic tank, that the present invention proposes, adopts portable sound absorption partition wall along its length effectively to improve the utilization rate of anechoic tank, when needs utilize space, whole pond to carry out measuring or testing, sound absorption partition wall moves to the one end in pond, and when every day use, then according to demand sound absorption partition wall can be moved to the optional position of length direction, splitting large anechoic tank, forms two independent used little anechoic tank,s, sound absorption partition wall adopts the wall skeleton of rigid unitary, can carry the weight of self and sound absorption material, and have uniform force, the feature of good rigidly, anyhow install concrete balancing weight additional between skeleton, regulate body of wall deadweight and body of wall buoyant equilibrium, make deadweight be greater than buoyancy, ensure that sound absorption partition wall security of operation is steady, the horizontal stroke of sound absorption partition wall, the sound insulation that inside filling thickness does not wait or material is different of perpendicular skeleton or sound absorption material, and stay to be formed to have concurrently with rigid backbone and absorb sound and the acoustic construction form of sound insulation function, and utilize the mechanism dissipation acoustic wave energy of impedance mismatching principle and cavity resonance, reach, in broadband, still there is excellent sound absorption, sound insulation property, the outside structure sound absorption by hanging sound absorption hanger, ensure that divided two washing basin parts can form separately independently free found field, accomplish sound absorption partition wall wall sound wave areflexia, and two ponds do not have the transmission of acoustic energy each other, meet the acoustic technique index request of basin test, to sum up, the present invention effectively absorbs incident acoustic wave, reduce acoustic reflection and intercept sound wave and propagate to partition wall opposite side, reach the object of the quiet noise elimination to underwater acoustic wave, have can movement fast simultaneously, form of structure is simple, the performance characteristics of long service life, be applicable to underwater sound silence processing in water tank engineering field or other needs to carry out the engineering of underwater sound silence processing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the structural representation of upper box beam in the present invention.
Fig. 5 is the B-B sectional drawing of Fig. 4.
Fig. 6 is the structural representation of skeleton anyhow in the present invention.
Fig. 7 is the sectional drawing of skeleton anyhow in the present invention.
Fig. 8 is the generalized section of the another kind of structure of skeleton anyhow in the present invention.
Fig. 9 is the generalized section of the third structure of skeleton anyhow in the present invention.
Figure 10 is the structural representation of sound absorbing member in the present invention.
Figure 11 is the structural representation of medium-high frequency rubber tile of the present invention.
Figure 12 is the lateral view of Figure 10.
Figure 13 is part A enlarged drawing in Figure 11.
In figure: 1, absorb sound partition wall, 2, upper box beam, 3, crossbeam, 4, ox horn, 5, walking mechanism, 6, anyhow skeleton, 7, top slat iron, 8, perpendicular skeleton, 9, sound absorbing member, 10, absorb sound circular cone, and 11, high frequency rubber tile, 12, circular cone link plate, 13, suspension member, 14, sound absorption or soundproof course, 15, fluid cavity, 16, anechoic tank.
Detailed description of the invention
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of anechoic tank, packaged type absorbs sound partition wall, and described sound absorption partition wall 1 is arranged in anechoic tank, 16, and the two side walls of the both sides of described sound absorption partition wall 1, bottom surface and anechoic tank, 16, all has gap between bottom surface; The two ends of described sound absorption partition wall 1 upper surface are respectively arranged with walking mechanism 5; Described walking mechanism 5 is joined with the guide rail kissing of anechoic tank, 16 upper surface, described sound absorption partition wall 1 is suspended in anechoic tank, 16 by walking mechanism 5, and can moving along the length direction of anechoic tank, 16 with walking mechanism 5; Described sound absorption partition wall 1 includes box beam 2, anyhow skeleton 6 and concrete balancing weight; Composition graphs 6, described skeleton anyhow 6 is erect by many top slat irons 7 and Duo Gen the rectangular frame that skeleton 8 connects and composes; The size decision according to sound absorption partition wall of top slat iron 7 and perpendicular skeleton 8 quantity is 2 ~ 30; Described top slat iron 7, perpendicular skeleton 8 are hollow structure; The both sides of described skeleton anyhow 6 all hang sound absorbing member 9; Sound absorption or soundproof course 14 are installed in the rectangular frame of described skeleton anyhow 6; Composition graphs 4, Fig. 5, described in described upper box beam 2 is connected to, the top of skeleton 6 forms the main body frame of rigid unitary anyhow, the uniform force of rigid unitary main body frame, good rigidly, possess enough bearing strengths and bending resistance, large dynamic load(loading) can be born; Described concrete balancing weight is arranged between many top slat irons 7 and many perpendicular skeletons 8, in order to regulate deadweight and the body of wall buoyant equilibrium of sound absorption partition wall body of wall, deadweight is made to be greater than buoyancy, ensure that sound absorption partition wall security of operation is steady, concrete balancing weight also plays the function of sound insulation or sound absorption material in fixing top slat iron, perpendicular skeleton simultaneously.
As shown in Figure 10, described sound absorbing member 9 includes sound absorption circular cone 10, high frequency rubber tile 11, circular cone link plate 12 and suspension member 13; Described circular cone link plate 12, high frequency rubber tile 11 are there is multiple through hole passed in order to the circular cone 10 that absorbs sound; Described high frequency rubber tile 11 is arranged on the outside of circular cone link plate 12; Described sound absorption circular cone 10 is multiple, is each passed through high frequency rubber tile and is arranged on circular cone link plate; Described circular cone link plate is suspended on the outside of top slat iron 7, perpendicular skeleton 8 by suspension member 13; In addition, described high frequency rubber tile 11 is additional according to demand, and the thickness of described high frequency rubber tile 11 is 4-10mm; In conjunction with Figure 11, Figure 12, Figure 13, high frequency rubber tile 11 described in this embodiment is the high frequency rubber tile of band broached-tooth design.Described sound absorption circular cone 10 adopts a kind of in oval cone, short circular cone or both combinations; The diameter of described oval cone is 50-80mm, and length is 300-500mm; The diameter of described short circular cone is 30-45mm, length is 200-400mm, in this embodiment, sound absorbing member adopts the oval cone of Φ 50mm × 470mm and the short conical base of Φ 37mm × 333mm to install the high frequency rubber tile being with broached-tooth design additional, in 2kHz ~ 100kHz frequency range, material sound absorption coefficient reaches 99%, the insertion loss >=30dB of sound absorption partition wall; Described suspension member 13 is hook or bolt.
As shown in Figure 8, anyhow the described sound absorption in skeleton 6 rectangular frame or soundproof course 14 are two-layer, the thickness of two-layer sound absorption or soundproof course 14 is different or material is different or thickness, material are all different, and in order to the generation of anti-leak-stopping voice phenomenon, two soundproof course thickness are respectively 90-120mm and 80-100mm.
As shown in Figure 7, the described sound absorption anyhow in skeleton 6 rectangular frame or soundproof course 14 are two-layer, have fluid cavity 15 between two-layer sound absorption or soundproof course, and form resonance chamber structure, the width of fluid cavity 15 is 30-200mm, pours water in fluid cavity 15.
As shown in Figure 9, anyhow the described sound absorption in skeleton 6 rectangular frame or soundproof course 14 are two-layer, have fluid cavity 15, form resonance chamber structure between the internal face of sound absorption or soundproof course and top slat iron, perpendicular skeleton, the width of fluid cavity 15 is 50-200mm, pours water in fluid cavity 15.
The sound absorption material that the material of described sound absorption or soundproof course 14 is 50-200mm by thickness forms, and is polyvinyl chloride or polystyrene foam plastics or polyurethane foam plastics or phenol formaldehyde foam or epoxy resin plastics.
The walking mechanism 5 at corresponding sound absorption partition wall 1 two ends is respectively arranged with transmission system; The structure of described walking mechanism 5 is a lot, and is all existing structure in prior art, does not do too much explanation at this; Walking mechanism 5 in this embodiment includes motor, cycloidal planetary gear speed reducer, double bushroller chain, roller; Described roller is two rows, at a distance of 1-2 rice between two row's rollers, and issuable inclination when can effectively prevent body of wall from walking; Described walking mechanism is provided with rail clamping device, can limit body of wall displacement.
Above-described is only the preferred embodiment of the principle of the invention.Under the premise without departing from the principles of the invention, without the need to the technical characteristic just can associated through creative work, can also make some distortion and improvement, these changes all should be considered as equivalent feature, still belong within protection scope of the present invention.
Claims (11)
1. an anechoic tank, packaged type absorbs sound partition wall, it is characterized in that: described sound absorption partition wall (1) is arranged in anechoic tank, (16), and the two side walls of the both sides of described sound absorption partition wall (1), bottom surface and anechoic tank, (16), all there is gap between bottom surface; The two ends of described sound absorption partition wall (1) upper surface are respectively arranged with walking mechanism (5); Described walking mechanism (5) is joined with the guide rail kissing of anechoic tank, (16) upper surface, described sound absorption partition wall (1) is suspended in anechoic tank, (16) by walking mechanism (5), and can moving along the length direction of anechoic tank, (16) with walking mechanism (5); Described sound absorption partition wall (1) includes box beam (2), anyhow skeleton (6) and concrete balancing weight; Described skeleton anyhow (6) is the rectangular frame connected and composed by many top slat irons (7) and many perpendicular skeletons (8); The both sides of described skeleton anyhow (6) all hang sound absorbing member (9); Install in the rectangular frame of described skeleton anyhow (6) and there is sound absorption or soundproof course (14); Described in described upper box beam (2) is connected to, the top of skeleton (6) forms the main body frame of rigid unitary anyhow, the uniform force of rigid unitary main body frame, good rigidly, possesses enough bearing strengths and bending resistance, can bear large dynamic load(loading); Described concrete balancing weight is arranged in the rectangular frame of skeleton (6) anyhow, in order to regulate deadweight and the body of wall buoyant equilibrium of sound absorption partition wall body of wall, deadweight is made to be greater than buoyancy, ensure that sound absorption partition wall security of operation is steady, concrete balancing weight also plays the function of sound insulation or sound absorption material in fixing top slat iron, perpendicular skeleton simultaneously.
2. a kind of anechoic tank, packaged type according to claim 1 absorbs sound partition wall, it is characterized in that: described sound absorbing member (9) includes sound absorption circular cone (10) circular cone link plate (12) and suspension member (13); Described circular cone link plate (12) has multiple through hole passed in order to the circular cone that absorbs sound (10); Described sound absorption circular cone (10) is for multiple, and multiple sound absorption circular cone is arranged on circular cone link plate respectively; Described circular cone link plate is suspended on the outside of top slat iron (7), perpendicular skeleton (8) by suspension member (13).
3. a kind of anechoic tank, packaged type according to claim 1 absorbs sound partition wall, it is characterized in that: described sound absorbing member (9) includes sound absorption circular cone (10), high frequency rubber tile (11), circular cone link plate (12) and suspension member (13); Described circular cone link plate (12), high frequency rubber tile (11) are there is multiple through hole passed in order to the circular cone that absorbs sound (10); Described high frequency rubber tile (11) is arranged on the outside of circular cone link plate (12); Described sound absorption circular cone (10), for multiple, are each passed through high frequency rubber tile and are arranged on circular cone link plate; Described circular cone link plate is suspended on the outside of top slat iron (7), perpendicular skeleton (8) by suspension member (13).
4. a kind of anechoic tank, packaged type according to claim 3 absorbs sound partition wall, it is characterized in that: the thickness of described high frequency rubber tile (11) is 4-10mm.
5. a kind of anechoic tank, packaged type according to Claims 2 or 3 absorbs sound partition wall, it is characterized in that: described sound absorption circular cone (10) adopts a kind of in oval cone, short circular cone or both combinations.
6. a kind of anechoic tank, packaged type according to Claims 2 or 3 absorbs sound partition wall, it is characterized in that: described sound absorption circular cone (10) adopts a kind of in oval cone, short circular cone or both combinations; The diameter of described oval cone is 50-80mm, and length is 300-800mm.
7. a kind of anechoic tank, packaged type according to Claims 2 or 3 absorbs sound partition wall, it is characterized in that: described sound absorption circular cone (10) adopts a kind of in oval cone, short circular cone or both combinations; The diameter of described short circular cone is 30-45mm, and length is 200-400mm.
8. a kind of anechoic tank, packaged type according to claim 1 absorbs sound partition wall, it is characterized in that: the described sound absorption anyhow in skeleton (6) rectangular frame or soundproof course (14) are multilayer, the thickness of adjacent two layers sound absorption or soundproof course (14) is different or material is different or thickness, material are all different, in order to the generation of anti-leak-stopping voice phenomenon.
9. a kind of anechoic tank, packaged type according to claim 1 absorbs sound partition wall, it is characterized in that: the described sound absorption anyhow in skeleton (6) rectangular frame or soundproof course (14) are multilayer, between adjacent two layers sound absorption or soundproof course, there is fluid cavity (15), form resonance chamber structure.
10. a kind of anechoic tank, packaged type according to claim 1 absorbs sound partition wall, it is characterized in that: the described sound absorption anyhow in skeleton (6) rectangular frame or soundproof course (14) are multilayer, sound absorption or between soundproof course with the internal face of skeleton (6) anyhow, there is fluid cavity (15), formation resonance chamber structure.
11. a kind of anechoic tank, packaged types according to claim 1 absorb sound partition wall, it is characterized in that: the sound absorption material of the material of described sound absorption or soundproof course (14) to be thickness be 50-200mm, sound absorption material is polyvinyl chloride or polystyrene foam plastics or polyurethane foam plastics or phenol formaldehyde foam or epoxy resin plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783408.0A CN104499503B (en) | 2014-12-18 | 2014-12-18 | A kind of anechoic tank, packaged type absorbs sound partition wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783408.0A CN104499503B (en) | 2014-12-18 | 2014-12-18 | A kind of anechoic tank, packaged type absorbs sound partition wall |
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| Publication Number | Publication Date |
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| CN104499503A CN104499503A (en) | 2015-04-08 |
| CN104499503B true CN104499503B (en) | 2016-04-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2878643A1 (en) * | 1973-12-07 | 2006-06-02 | Le Secretaire D Etat A La Defe | Anechoic cell for constituting anechoic surface covering of large immersed/submersible surface, has front diaphragm deformed by pressure of acoustic wave traversing water to drive viscous fluid via perforations of resistor plate |
| CN101266786A (en) * | 2007-03-14 | 2008-09-17 | 中国船舶重工集团公司第七二五研究所 | A muffler for muffling water pool and its making method |
| 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 |
| CN204551524U (en) * | 2014-12-18 | 2015-08-12 | 洛阳双瑞橡塑科技有限公司 | A kind of anechoic tank, packaged type absorbs sound partition wall |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780785A (en) * | 1997-03-12 | 1998-07-14 | Eckel; Alan | Acoustic absorption device and an assembly of such devices |
-
2014
- 2014-12-18 CN CN201410783408.0A patent/CN104499503B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2878643A1 (en) * | 1973-12-07 | 2006-06-02 | Le Secretaire D Etat A La Defe | Anechoic cell for constituting anechoic surface covering of large immersed/submersible surface, has front diaphragm deformed by pressure of acoustic wave traversing water to drive viscous fluid via perforations of resistor plate |
| CN101266786A (en) * | 2007-03-14 | 2008-09-17 | 中国船舶重工集团公司第七二五研究所 | A muffler for muffling water pool and its making method |
| 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 |
| CN204551524U (en) * | 2014-12-18 | 2015-08-12 | 洛阳双瑞橡塑科技有限公司 | A kind of anechoic tank, packaged type absorbs sound partition wall |
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| CN104499503A (en) | 2015-04-08 |
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