CN110599993A - Carbon fiber sound baffle for underwater detection equipment - Google Patents
Carbon fiber sound baffle for underwater detection equipment Download PDFInfo
- Publication number
- CN110599993A CN110599993A CN201910904234.1A CN201910904234A CN110599993A CN 110599993 A CN110599993 A CN 110599993A CN 201910904234 A CN201910904234 A CN 201910904234A CN 110599993 A CN110599993 A CN 110599993A
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- Prior art keywords
- carbon fiber
- sound
- baffle
- shell
- absorbing
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Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 53
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000013016 damping Methods 0.000 claims abstract description 46
- 239000011162 core material Substances 0.000 claims abstract description 30
- 238000010521 absorption reaction Methods 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013329 compounding Methods 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000006872 improvement Effects 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a carbon fiber sound baffle for underwater detection equipment, which comprises a baffle main body, a damping layer and a sound absorption layer, wherein the damping layer is tightly bonded on one side of the baffle main body, the sound absorption layer is tightly bonded on the other side of the baffle main body, the baffle main body 1 adopts a structural form that a shell wraps a carbon fiber honeycomb core material, the carbon fiber honeycomb core material and the shell are both formed by compounding carbon fiber reinforced resin, the shell and the carbon fiber honeycomb core material are bonded by resin, and a cavity is formed in the carbon fiber honeycomb core material and the shell; according to the invention, a structural form that the carbon fiber honeycomb core material is wrapped by the shell is adopted, a plurality of independent and closed cavities are formed by the carbon fiber honeycomb core material and the shell to serve as sound insulation structures, and the propeller noise, mechanical noise and ship body vibration sound radiation from the stern are blocked by using the impedance mismatch effect, so that the influence of the noise on underwater detection equipment is reduced, and the detection performance of the equipment is improved.
Description
Technical Field
The invention relates to the technical field of vibration and noise reduction, in particular to a carbon fiber sound baffle for underwater detection equipment.
Background
The ship bow of the modern large and medium ships is mostly provided with underwater detection equipment, the performance of the underwater detection equipment is influenced by the acoustic environment in the bow dome, the flow noise from the front of the bow dome, the propeller noise in the stern direction and the vibration noise of mechanical equipment all interfere the normal work of the underwater acoustic detection equipment, at present, the sound baffle plate is gradually applied to the bow dome as a noise reduction structure to reduce the water-borne noise generated by the propeller, the mechanical equipment and the like from the stern, the structural design of the sound baffle plate is mainly concentrated on the aspects of metal and low-density foaming materials, the sound baffle plate made of metal has the defects of large weight and inconvenient installation in a narrow space, the low-density foaming materials also have the defects of insufficient strength, need other structures for auxiliary support and the like, accordingly, the present invention is directed to a carbon fiber sound baffle for an underwater exploration device that solves the problems of the prior art.
Disclosure of Invention
Aiming at the problems, the invention provides the carbon fiber sound baffle for the underwater detection equipment, the carbon fiber sound baffle for the underwater detection equipment comprehensively considers the requirements of the underwater detection equipment on the ambient noise environment, and the sound baffle composite structure has the functions of sound insulation, sound absorption and damping; in addition, the novel steel plate has the advantages of light weight, high strength, easiness in installation in narrow space and the like.
In order to solve the problems, the invention provides a carbon fiber sound baffle for underwater detection equipment, which comprises a baffle main body, a damping layer and a sound absorption layer, wherein the damping layer is tightly bonded on one side of the baffle main body, the sound absorption layer is tightly bonded on the other side of the baffle main body, the baffle main body 1 adopts a structural form that a carbon fiber honeycomb core material is wrapped by a shell, the carbon fiber honeycomb core material and the shell are both formed by compounding carbon fiber reinforced resin, the shell and the carbon fiber honeycomb core material are bonded by resin, a cavity is formed in the carbon fiber honeycomb core material and the shell, and the cavity is provided with multiple independent and closed groups.
The further improvement lies in that: and embedded bolts are arranged on two sides of the shell and are fixedly installed on the damping layer and the sound absorption layer.
The further improvement lies in that: the carbon fiber honeycomb core material is provided with a plurality of groups of honeycomb holes, the diameters of the honeycomb holes are 6-8mm, and the thickness of the shell is 5-10 mm.
The further improvement lies in that: the damping layer is made of polyurethane high-molecular damping materials added with basalt scales, the damping loss factor of the damping layer is 0.5-1.1, and the modulus of the damping layer is 1.4-9.7E +7 Pa.
The further improvement lies in that: the damping layer and the baffle main body are bonded by metal adhesive, and four corners of the damping layer are fixed with the baffle main body through bolt assistance.
The further improvement lies in that: the sound absorption coefficient of sound-absorbing layer is greater than 0.9, the sound-absorbing layer comprises wedge base and two kinds of circular cone sound-absorbing wedges, and the specification of size of two kinds of circular cone sound-absorbing wedges is different, wedge base and two kinds of circular cone sound-absorbing wedges are polyurethane sound-absorbing material, and all are equipped with the sound-absorbing chamber in two kinds of circular cone sound-absorbing wedges.
The further improvement lies in that: the two conical sound absorption wedges are respectively a short wedge and a long wedge, the number of the short wedges is one, the number of the long wedges is one, and the sound absorption layer and the baffle main body are bonded by adopting a metal adhesive.
The invention has the beneficial effects that: 1. the sound barrier board is characterized in that a structural form that a carbon fiber honeycomb core material is wrapped by a shell is adopted, a plurality of independent and closed cavities are formed by the carbon fiber honeycomb core material and the shell and serve as sound insulation structures, the impedance mismatch effect is utilized to block propeller noise, mechanical noise and ship body vibration sound radiation from a ship stern, the influence of the noise on underwater detection equipment is reduced, and therefore the detection performance of the equipment is improved;
2. the carbon fiber honeycomb core material and the shell which are formed by compounding the carbon fiber reinforced resin have the characteristics of light weight and high strength, vibration is easy to transmit through the baffle structure, in order to reduce vibration transmission, a damping layer is pasted on one side of the sound baffle close to the stern, the damping layer has the functions of improving the damping of the sound insulation structure and inhibiting the vibration of the sound baffle structure, and through simulation calculation, the damping layer further improves the sound insulation quantity of the sound baffle, and the sound insulation quantity can reach 15 dB;
3. the baffle main part pastes the sound-absorbing layer towards underwater detection equipment one side, and the sound-absorbing layer comprises sound-absorbing wedge base and two kinds of circular cone sound-absorbing wedges, and the sound-absorbing wedge adopts the acoustic absorption material preparation, has the sound-absorbing chamber to help improving the sound absorption performance of wedge in, and acoustic absorption material's acoustic impedance is close with the water phase, and the appearance characteristic of sound-absorbing wedge easily realizes the gradual transition of water and acoustic absorption material acoustic impedance, and sound-absorbing wedge acoustic absorption coefficient is greater than 0.9, and sound absorption effect is better.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a housing and a carbon fiber honeycomb core of the present invention;
fig. 3 is a schematic view of an acoustical layer of the present invention.
Wherein: 1. a mask body; 2. a damping layer; 3. a sound absorbing layer; 4. a housing; 5. a carbon fiber honeycomb core material; 6. embedding bolts in advance; 7. a wedge pedestal for sound absorption; 8. short wedge; 9. and (4) long wedge.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to fig. 1, 2 and 3, the embodiment provides a carbon fiber sound baffle for underwater exploration equipment, which comprises a baffle main body 1, a damping layer 2 and a sound absorption layer 3, wherein the damping layer 2 is tightly bonded on one side of the baffle main body 1, the sound absorption layer 3 is tightly bonded on the other side of the baffle main body 1, the baffle main body 1 adopts a structural form that a shell 4 wraps a carbon fiber honeycomb core material 5, the carbon fiber honeycomb core material 5 and the shell 4 are formed by compounding carbon fiber reinforced resin, the shell 4 and the carbon fiber honeycomb core material 5 are bonded by resin, a cavity is formed in the carbon fiber honeycomb core material 5 and the shell 4, and the cavity is provided with independent and closed multiple groups. These cavities serve as sound insulation.
The both sides of shell 4 are equipped with buried bolt 6 in advance, and buried bolt 6 installation is fixed damping layer 2 and sound absorbing layer 3.
The thickness of carbon fiber honeycomb core 5 is 20mm, be equipped with multiunit honeycomb hole on the carbon fiber honeycomb core 5, and the diameter of honeycomb hole is 7mm, the thickness of shell 4 is 8 mm.
The length and width of the damping layer 2 are 300mm multiplied by 300mm, the thickness of the damping layer 2 is 20mm, the damping layer 2 is made of polyurethane polymer damping materials added with basalt scales, the damping loss factor of the damping layer 2 is 1.1, and the modulus of the damping layer 2 is 9.5E +7 Pa. The damping layer 2 has stable performance in water and is not easy to corrode, so that the damping layer 2 has better corrosion resistance and water resistance.
The damping layer 2 and the baffle main body 1 are bonded by metal adhesive, and four corners of the damping layer 2 are fixed with the baffle main body 1 through bolt assistance. Is suitable for long-term use.
The sound absorption coefficient of sound-absorbing layer 3 is 0.92, sound-absorbing layer 3 comprises wedge base 7 and two kinds of circular cone sound-absorbing wedges, and the specification of size of two kinds of circular cone sound-absorbing wedges is different, wedge base 7 and two kinds of circular cone sound-absorbing wedges are polyurethane sound-absorbing material, and all are equipped with the sound-absorbing chamber in two kinds of circular cone sound-absorbing wedges. The acoustic wedge base 7 is 40mm thick.
The two conical sound-absorbing wedges are respectively a short wedge 8 and a long wedge 9, the number of the short wedges 8 is one, the number of the short wedges is one, the number of the long wedges 9 is one, and the sound-absorbing layer 3 and the baffle main body 1 are bonded by metal adhesive. The diameter of the bottom of the long wedge 9 is 24mm, the distance between the long wedges is 27.5mm, the diameter of the bottom of the short wedge 8 is 12.5mm, and the distance between the short wedges is 13.5 mm.
The carbon fiber sound baffle for the underwater detection equipment adopts a structural form that a shell 4 wraps a carbon fiber honeycomb core material 5, the carbon fiber honeycomb core material 5 and the shell 4 form a plurality of independent and closed cavities serving as sound insulation structures, the propeller noise, mechanical noise and hull vibration sound radiation from the stern are blocked by using an impedance mismatch effect, and the influence of the noise on the underwater detection equipment is reduced, so that the detection performance of the equipment is improved, when underwater sound from the stern is incident on a sound baffle main body, the sound baffle main body structure has great difference in impedance characteristic and outside water due to the fact that air is in the closed cavity and the acoustic impedance of the air is far smaller than that of the water, the sound waves are difficult to penetrate through the cavity structure and transmit to the other side, so that excellent sound insulation performance is obtained, and the sound insulation quantity of the sound baffle main body can reach 8dB through simulation calculation; the carbon fiber honeycomb core material 5 and the shell 4 which are formed by compounding the carbon fiber reinforced resin have the characteristics of light weight and high strength, vibration is easy to transmit through the baffle structure, in order to reduce vibration transmission, the damping layer 2 is pasted on one side, close to the stern, of the sound baffle, the damping layer 2 has the effects of improving the damping of the sound insulation structure and inhibiting the vibration of the sound baffle structure, and through simulation calculation, the sound insulation quantity of the sound baffle is further improved by the damping layer 2, and can reach 15 dB; simultaneously, the baffle main part 1 pastes acoustic layer 3 towards detection equipment one side under water, and acoustic layer 3 comprises wedge base 7 and two kinds of circular cone sound absorption wedges, and the wedge adopts the acoustic absorption material preparation, has the sound-absorbing chamber to help improving the sound absorption performance of wedge in, and acoustic absorption material's acoustic impedance is close with the water phase, and the appearance characteristic of wedge easily realizes the gradual transition of water and acoustic absorption material acoustic impedance, and wedge acoustic absorption coefficient is greater than 0.9, and the sound absorption effect is better.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A carbon fiber sound baffle for underwater detection equipment, includes baffle main part (1), damping layer (2) and acoustic absorbent layer (3), its characterized in that: one side of baffle main part (1) closely bonds and has damping layer (2), and the opposite side of baffle main part (1) closely bonds and has sound absorbing layer (3), baffle main part 1 adopts the structural style of shell (4) parcel carbon fiber honeycomb core (5), and carbon fiber honeycomb core (5) and shell (4) are the compound constitution of carbon fiber reinforced resin, shell (4) and carbon fiber honeycomb core (5) adopt resin to glue, form the cavity in carbon fiber honeycomb core (5) and shell (4), and the cavity is equipped with independent, inclosed multiunit.
2. A carbon fiber acoustic baffle for an underwater detection device as claimed in claim 1 wherein: the two sides of the shell (4) are provided with embedded bolts (6), and the embedded bolts (6) are installed and fixed on the damping layer (2) and the sound absorption layer (3).
3. A carbon fiber acoustic baffle for an underwater detection device as claimed in claim 1 wherein: the carbon fiber honeycomb core material (5) is provided with a plurality of groups of honeycomb holes, the diameters of the honeycomb holes are 6-8mm, and the thickness of the shell (4) is 5-10 mm.
4. A carbon fiber acoustic baffle for an underwater detection device as claimed in claim 1 wherein: the damping layer (2) is made of polyurethane high-molecular damping materials added with basalt scales, the damping loss factor of the damping layer (2) is 0.5-1.1, and the modulus of the damping layer (2) is 1.4-9.7E +7 Pa.
5. A carbon fiber acoustic baffle for an underwater detection device as claimed in claim 1 wherein: the damping layer (2) and the baffle main body (1) are bonded through metal adhesive, and four corners of the damping layer (2) are fixed with the baffle main body (1) through bolt assistance.
6. A carbon fiber acoustic baffle for an underwater detection device as claimed in claim 1 wherein: the sound absorption coefficient of sound-absorbing layer (3) is greater than 0.9, sound-absorbing layer (3) comprises wedge base (7) and two kinds of circular cone sound-absorbing wedges, and the specification of size of two kinds of circular cone sound-absorbing wedges is different, wedge base (7) and two kinds of circular cone sound-absorbing wedges are polyurethane sound-absorbing material, and all are equipped with the sound-absorbing chamber in two kinds of circular cone sound-absorbing wedges.
7. The carbon fiber acoustic baffle for an underwater detection device of claim 6 wherein: two kinds of circular cone sound-absorbing wedges are short wedge (8) and long wedge (9) respectively, and four short wedge (8) are a set of, with one long wedge (9) staggered arrangement, adopt metal gluing agent bonding between sound-absorbing layer (3) and baffle main part (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904234.1A CN110599993B (en) | 2019-09-24 | 2019-09-24 | Carbon fiber sound baffle for underwater detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904234.1A CN110599993B (en) | 2019-09-24 | 2019-09-24 | Carbon fiber sound baffle for underwater detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110599993A true CN110599993A (en) | 2019-12-20 |
| CN110599993B CN110599993B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910904234.1A Active CN110599993B (en) | 2019-09-24 | 2019-09-24 | Carbon fiber sound baffle for underwater detection equipment |
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| CN (1) | CN110599993B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715350A (en) * | 2020-06-08 | 2020-09-29 | 西安宝鑫自动化设备有限公司 | Noise elimination leak protection material ball mill |
| CN113948055A (en) * | 2021-09-17 | 2022-01-18 | 中国舰船研究设计中心 | Combined sound baffle adaptive to sound interference propagation path and installation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111715350A (en) * | 2020-06-08 | 2020-09-29 | 西安宝鑫自动化设备有限公司 | Noise elimination leak protection material ball mill |
| CN111715350B (en) * | 2020-06-08 | 2021-07-27 | 滦平县骥腾矿业集团有限公司 | Noise elimination leak protection material ball mill |
| CN113948055A (en) * | 2021-09-17 | 2022-01-18 | 中国舰船研究设计中心 | Combined sound baffle adaptive to sound interference propagation path and installation method |
| CN113948055B (en) * | 2021-09-17 | 2023-02-07 | 中国舰船研究设计中心 | Combined sound baffle adaptive to sound interference propagation path and installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110599993B (en) | 2024-06-21 |
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