CN215730850U - Underwater double-layer sound absorption board - Google Patents
Underwater double-layer sound absorption board Download PDFInfo
- Publication number
- CN215730850U CN215730850U CN202122123269.7U CN202122123269U CN215730850U CN 215730850 U CN215730850 U CN 215730850U CN 202122123269 U CN202122123269 U CN 202122123269U CN 215730850 U CN215730850 U CN 215730850U
- Authority
- CN
- China
- Prior art keywords
- sound absorption
- underwater
- support frame
- sound
- double
- 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.)
- Active
Links
Images
Abstract
The utility model discloses an underwater double-layer sound absorption plate, relates to the technical field of sonar systems, and aims to solve the problem that underwater sound receiving and transmitting equipment is influenced by noise, and the technical scheme is characterized in that: the sound absorption device comprises a body and a plurality of sound absorption columns, wherein the body is composed of a support frame and two support plates and is provided with an accommodating space, and the sound absorption columns are fixed in the accommodating space and abut against support blocks on two sides. The sound absorption structure for absorbing underwater noise is fixed with the metal shell, and the inner cavity of the body structure is filled with air, so that the matched thin-surface double-layer sound absorption plate can be manufactured according to the surface line type of the laying structure, and the sound absorption effect of the whole equipment is effectively improved.
Description
Technical Field
The utility model relates to the technical field of sonar systems, in particular to an underwater double-layer sound absorption plate.
Background
Currently, underwater vehicles and the like generally need to install underwater acoustic transceiver on the outer surface of a structure, and the underwater acoustic transceiver has a plurality of problems in installation and use. Firstly, in order to enhance the underwater pressure resistance of an underwater vehicle and the like, the shell of an underwater structure is generally a metal shell with a complex structure, and when the underwater acoustic transceiver is arranged on the surface of the metal shell, sound waves are scattered on the surface of the metal shell, so that the underwater acoustic transceiver is greatly influenced; secondly, in order to ensure a streamline structure of the underwater structure shell, the underwater sound transceiver needs to be in a thin-surface structure as much as possible and is close to the shell of the underwater structure as much as possible, so that the influence of scattering on the surface of the shell on the underwater sound transceiver is aggravated; finally, mechanical noise inside the underwater structural shell reaches the underwater acoustic transceiver device through the shell, and the underwater acoustic transceiver device is also greatly affected.
The underwater transceiver is used as a common underwater module, and the structure and the size of the underwater transceiver have higher requirements. When the thin-surface structure is installed underwater, the integral line type of the installation structure is not damaged, and the turbulence on the surface of the installation structure is not increased. The thickness of the traditional sound absorption material or sound insulation material needs to be designed according to the used working frequency, the traditional sound absorption material or sound insulation material is difficult to realize lightness and thinness at low frequency, and the common sound absorption material is not resistant to underwater and cannot be used in deeper underwater, so that a thin-surface sound absorption structure which is medium-low frequency band and pressure-resistant is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems, and provides an underwater double-layer sound absorption plate, which can effectively reduce the noise of medium and low frequency bands, improve the receiving signal-to-noise ratio of underwater transceiving equipment and the working stability of a system, has better pressure resistance and has wider underwater application range.
The technical purpose of the utility model is realized by the following technical scheme: an underwater double-layer sound absorption plate comprises a body and a plurality of sound absorption columns, wherein the body is composed of a support frame and two support plates and is provided with an accommodating space, and the sound absorption columns are fixed in the accommodating space and abut against supporting blocks on two sides.
The utility model is further configured to: two end faces of the sound absorption column are respectively glued to the two supporting plates.
The utility model is further configured to: the sound absorption column is cylindrical or table-shaped, and the upper bottom surface and the lower bottom surface of the sound absorption column are respectively fixed on the supporting plates on the two sides in a staggered arrangement mode.
The utility model is further configured to: the support frame is fixedly connected with the two support plates in a watertight manner, and the accommodating space is sealed and filled with gas.
The utility model is further configured to: the support frame is welded and fixed with the two support plates.
The utility model is further configured to: the supporting frame is of an annular frame structure, the two supporting plates are located on two sides of the supporting frame, and two sides of the annular supporting frame are sealed to form the accommodating space.
The utility model is further configured to: the support frame is fixedly connected with the two support plates through threaded fasteners, the edge of the support frame extends to form a solid connecting block, and the threaded fasteners penetrate through holes in the connecting block and the support plates to fix the support frame and the two support plates.
The utility model is further configured to: the body consisting of the support frame and the two support plates is made of metal materials; the sound absorption column is made of rubber materials with sound absorption functions.
The utility model is further configured to: the body composed of the support frame and the two support plates is planar, curved or cylindrical.
In conclusion, the utility model has the following beneficial effects:
according to the underwater double-layer sound absorption plate, noise is absorbed through the body consisting of the support frame and the two support plates and the sound absorption column together, and the hollow accommodating space is combined with the sound absorption column to act together, so that the sound absorption capacity of the double-layer plate can be effectively improved, and the noise of a medium-low frequency band is reduced; and the sound absorption plate main body and a plurality of groups of sound absorption columns are supported together, so that the underwater double-layer sound absorption plate has stronger pressure resistance and can be used in deeper water areas.
The underwater double-layer sound absorption plate is arranged on the surface of the underwater structure, so that the radiation noise of the underwater structure can be reduced; the underwater double-layer sound absorption plate is arranged between the hydrophone receiving array and the underwater structure, so that the influence of scattering on the surface of the underwater structure shell on array receiving can be reduced, the influence of noise under water on the underwater sound receiving and transmitting equipment can be reduced on the whole, and the working stability of the equipment is improved. And the underwater double-layer sound absorption plate can be made into a thin-surface structure with any shape, and can be covered according to the shape of underwater equipment without changing the surface line type of the mounting structure.
Drawings
FIG. 1 is a schematic structural view of an underwater double-layer sound absorption board of the present invention;
FIG. 2 is an exploded view of an underwater double-layered sound-absorbing panel according to the present invention;
fig. 3 is a schematic structural diagram of a support frame and a sound absorption column of the underwater double-layer sound absorption board.
Reference numerals: 1. a support plate; 2. a support frame; 3. a sound absorbing column; 4. connecting blocks; 5. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment discloses an underwater double-layer sound absorption plate, which comprises a support frame 2, two supports and a plurality of sound absorption columns 3, wherein the two support plates 1 are fixed on two sides of the support frame 2 to form a sound absorption plate body with an accommodating space inside, the sound absorption columns 3 are fixed in the accommodating space, and two end surfaces of each sound absorption column 3 are abutted between support blocks on two sides to carry out pressure-resistant support on underwater pressure together; and the containing space is sealed, filled with air and realizes the sound absorption function together with the sound absorption column 3.
In this embodiment, link firmly for the watertight between the backup pad 1 of support frame 2 and both sides, realize through welding process, inside the accommodation space of avoiding the acoustic baffle to install when under water and having water entering acoustic baffle, support frame 2 and the backup pad 1 of both sides are connected and are formed integral structure, can not dismantle. The supporting frame 2 and the supporting plates 1 on the two sides are reinforced by adopting threaded fasteners; set up through-hole 5 in the border position of the backup pad 1 of support frame 2 and both sides, through-hole 5 aligns from top to bottom, and the enough big solid platform of 2 four corners extension areas of support frame makes the 5 outsides of through-hole reserve sufficient space, guarantees the steadiness and the security of installation, through-hole 5 in the backup pad 1 of support frame 2 and both sides with by mounting structure through threaded fastener fixed connection.
In this embodiment, the bottom surface is fixed in top cap and bottom plate respectively in proper order staggered arrangement on the sound absorption post 3 with lower bottom surface, and the inside cavity that the redundancy goes out fills the air, further promotes the sound absorbing capacity of double-deck board.
In this embodiment, the shape of the main body structure has various shapes, for example, the main body structure may be a plane shape and fixed on the surface of the plane structure, the support frame 2 is an annular frame structure, and the two support plates 1 are located at two sides of the support frame 2 to seal two sides of the annular support frame 2 to form a sealed accommodating space; for another example, the main structure may be a curved surface, and the bending range of the curved surface can be bent according to the main body of the underwater equipment and fixed on the surface of the arc-shaped structure; or, the main structure can be a cylinder, the main structure forms a cylindrical structure suitable for underwater equipment, when the main structure is in a cylinder shape with an annular seal, the support frame 2 adopts two annular support pieces for supporting, and the two support plates 1 are respectively welded and fixed on the inner periphery and the outer periphery of the annular support pieces to form a watertight sealed main structure which is fixed on the surface of a cylindrical shell.
In this embodiment, the main structure includes a support frame 2 and support plates 1 on two sides, the main structure is a cuboid, the support frame 2 is a rectangular frame, and the support plates 1 are rectangular plates with matched sizes, wherein the total thickness of the main structure is 20mm, the thickness of the support plates 1 is 5mm, the thickness of the support frame 2 is 10mm, and the thickness of the frame edge of the support frame 2 is 5 mm; the support frame 2 and the support plate 1 of the main body structure are both made of stainless steel materials with pressure resistance, and can effectively resist the water pressure of deeper water areas so as to be used in deeper sea areas.
Here, it should be noted that the size of the main structure is only an exemplary illustration and is not a limitation to the present application, and the specific size of the main structure is determined by the size of the underwater structure where the double-layer board needs to be laid.
In this embodiment, as shown in fig. 2-3, the sound-absorbing columns 3 may be circular truncated cones with an upper bottom surface diameter of 10mm, a lower bottom surface diameter of 20mm, and a height of 10mm, each sound-absorbing column 3 is distributed in a rectangular array, two adjacent sound-absorbing columns 3 are circular truncated cones with opposite directions, and the upper bottom surface and the lower bottom surface thereof are respectively and sequentially staggered and glued to the support plates 1 on both sides; the lower bottom surfaces of the two adjacent sound absorption columns 3 are tangent to the projection of the lower bottom surfaces, all the sound absorption columns 3 are arranged in a staggered mode, and the containing space in the whole supporting frame 2 is filled with the sound absorption columns, so that the stress of the top cover and the bottom plate can be balanced, and the pressure resistance of the double-layer sound absorption plate is improved.
Here, it should be noted that the number and size of the sound absorption columns 3 are only exemplary and not limiting to the present application, and the number and size of the sound absorption columns 3 are determined by the internal structure of the support frame 2, so as to ensure that the internal space of the support frame 2 can be arranged to cover the whole space.
The sound absorption column 3 is made of rubber materials with sound absorption function, and the sound absorption rubber materials can effectively attenuate sound waves and realize sound absorption in low frequency range; the air is filled in the residual space after the sound absorption columns 3 are fully paved in the containing space, the rapid attenuation of sound waves in the double-layer plate can be increased, the combined action of the sound absorption columns 3 is combined, the sound absorption capacity of the double-layer plate can be effectively improved, particularly the sound waves with the low frequency range of 1000 Hz-5000 Hz, the sound absorption capacity can reach more than 10dB, and the sound absorption effect is good.
Here, it should be noted that the above-mentioned size of the sound absorption column 3 is only an exemplary illustration and does not limit the present application, and the specific size of the sound absorption column 3 is determined by the actual underwater pressure resistance and sound absorption capability.
In the embodiment, as shown in fig. 1-3, the support frame 2 and the support plates 1 on both sides are connected and fixed by using threaded fasteners, and the specific installation structure is that four corners of the support frame 2 extend inward to form solid connection blocks 4 with a large enough area, through holes 5 aligned up and down are formed at corresponding positions of the four connection blocks 4 and four corners of the support plates 1, and the support frame 2 and the support plates 1 are fixedly connected by sequentially passing through the through holes 5 through the threaded fasteners during installation; generally, the length of the connecting block 4 is 20mm, the width of the connecting block is 20mm, the diameter of the through hole 5 is 3mm, the through hole 5 is arranged in the center of the platform, the fixed platform is uniformly stressed during installation, and the reliability of installation and fixation is improved; in order to improve the line shape of the main structure, a counter bore can be arranged at the outer end of the through hole 5 on the supporting plate 1 so as to accommodate the end part of the threaded fastener, so that the threaded fastener keeps the outer part of the sound absorption plate smooth after being installed.
The embodiment also discloses an underwater acoustic transceiving noise reduction structure of the underwater equipment, which comprises a plurality of sound absorption plates, wherein the sound absorption plates with various shapes and sizes are processed and formed according to the external contour of the underwater equipment, and the sound absorption plates are covered and installed on the underwater equipment or the surface of a corresponding hydrophone array through threaded fasteners, so that the noise reduction and absorption of the surface noise of the underwater equipment can be realized, and the transceiving stability of the underwater transceiving equipment is greatly improved; and the sound absorption plate can be made into a thin-surface structure with any shape without changing the surface line type of the mounting structure.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (9)
1. The underwater double-layer sound absorption plate is characterized by comprising a body and a plurality of sound absorption columns (3), wherein the body is composed of a support frame (2) and two support plates (1) and provided with an accommodating space, and the sound absorption columns (3) are fixed in the accommodating space and abut against support blocks on two sides.
2. The underwater double-layer sound-absorbing panel as claimed in claim 1, wherein: and the two end faces of the sound absorption column (3) are respectively glued to the two supporting plates (1).
3. The underwater double-layer sound-absorbing panel as claimed in claim 1, wherein: the sound absorption column (3) is cylindrical or table-shaped, and the upper bottom surface and the lower bottom surface of the sound absorption column (3) are respectively fixed on the support plates (1) on two sides in a staggered arrangement mode.
4. The underwater double-layer sound-absorbing panel as claimed in claim 1, wherein: the supporting frame (2) is fixedly connected with the two supporting plates (1) in a watertight manner, and the accommodating space is sealed and filled with gas.
5. The underwater double-layer sound-absorbing panel as claimed in claim 4, wherein: the support frame (2) is welded and fixed with the two support plates (1).
6. The underwater double-layer sound-absorbing panel as claimed in claim 4, wherein: the supporting frame (2) is of an annular frame structure, the two supporting plates (1) are located on two sides of the supporting frame (2), and two sides of the annular supporting frame (2) are sealed to form the accommodating space.
7. The underwater double-layer sound-absorbing panel as claimed in claim 6, wherein: support frame (2) and two backup pads (1) pass through threaded fastener fixed connection, support frame (2) edge extends and forms solid connecting block (4), threaded fastener passes through-hole (5) on connecting block (4) and backup pad (1) are fixed support frame (2) and two backup pads (1).
8. The underwater double-layer sound-absorbing panel as claimed in claim 1, wherein: the body consisting of the support frame (2) and the two support plates (1) is made of metal materials; the sound absorption column (3) is made of rubber materials with sound absorption function.
9. The underwater double-layer sound-absorbing panel as claimed in claim 1, wherein: the body composed of the support frame (2) and the two support plates (1) is planar, curved or cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122123269.7U CN215730850U (en) | 2021-09-03 | 2021-09-03 | Underwater double-layer sound absorption board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122123269.7U CN215730850U (en) | 2021-09-03 | 2021-09-03 | Underwater double-layer sound absorption board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215730850U true CN215730850U (en) | 2022-02-01 |
Family
ID=80014402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122123269.7U Active CN215730850U (en) | 2021-09-03 | 2021-09-03 | Underwater double-layer sound absorption board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215730850U (en) |
-
2021
- 2021-09-03 CN CN202122123269.7U patent/CN215730850U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108731838B (en) | Acoustic material structure and assembling method of acoustic material structure and acoustic radiation structure | |
| JPS6324296A (en) | Structural member having acoustic characteristic | |
| CN215730850U (en) | Underwater double-layer sound absorption board | |
| JP5498233B2 (en) | Static induction machine | |
| CN209799471U (en) | Sound insulation room | |
| US4669573A (en) | Underwater acoustic baffle enhancer | |
| CN113740830A (en) | Underwater double-layer sound absorption plate and underwater sound receiving and transmitting noise reduction structure | |
| US5621701A (en) | Controlled compliance acoustic baffle | |
| CN113066463B (en) | Sound absorption and insulation structure for controlling sound vibration of transformer oil tank, transformer oil tank and transformer | |
| CN110718204B (en) | Noise reduction and sound insulation structure for working environment of underwater detection equipment | |
| CN212835042U (en) | Sound insulation barrier for road construction | |
| CN110706685B (en) | Vibration and noise reduction structure for working environment of underwater detection equipment | |
| CN211376188U (en) | Sound baffle combination for underwater detection equipment | |
| CN111145711A (en) | Underwater pressure relief sound reflecting baffle | |
| CN112623168A (en) | Large-scale underwater platform noise reduction covering layer with space bending composite decoupling mechanism | |
| RU2138858C1 (en) | Underwater acoustic screen | |
| CN212032641U (en) | Device for reducing reflecting intensity of end face of water tank | |
| CN112009619A (en) | Tuning particle damping type floating raft | |
| CN215596293U (en) | Sewage treatment noise reduction device | |
| CN215118304U (en) | Combined type sound-proof housing of marine engine | |
| CN215170038U (en) | Highway tunnel segment that possesses sound absorption function | |
| CN219609220U (en) | Novel transducer structure is swept to side | |
| CN220724878U (en) | Combined novel sound barrier | |
| JP4114463B2 (en) | Sound absorbing structure and sound absorbing and insulating structure | |
| CN111156161A (en) | Vibration and noise reduction structure of booster pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |