CN101927819A - Anechoic tile prepared from rare-earth super-magnetic flexible material - Google Patents
Anechoic tile prepared from rare-earth super-magnetic flexible material Download PDFInfo
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- CN101927819A CN101927819A CN201010241084XA CN201010241084A CN101927819A CN 101927819 A CN101927819 A CN 101927819A CN 201010241084X A CN201010241084X A CN 201010241084XA CN 201010241084 A CN201010241084 A CN 201010241084A CN 101927819 A CN101927819 A CN 101927819A
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- moving body
- underwater moving
- rare
- super
- noise
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- 239000000463 material Substances 0.000 title claims abstract description 30
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 28
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 6
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 7
- 238000005987 sulfurization reaction Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 abstract description 6
- 230000000452 restraining effect Effects 0.000 abstract 1
- 229920003051 synthetic elastomer Polymers 0.000 abstract 1
- 239000005061 synthetic rubber Substances 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention relates to an anechoic tile prepared from a rare-earth super-magnetic flexible material. An arc-shaped solid rare-earth super-magnetic flexible material block is sulfurized and packaged in novel synthetic rubber and is used on the surface of an underwater moving body and the surface of a bridge. The anechoic tile of the invention has the advantages of restraining vibration generated by the underwater moving body per se, isolating radiation of machine noise in the underwater moving body to the underwater moving body, remarkably reducing the reflection strength of sound waves of active sonar and the radiation noise and self-noise of the underwater moving body and providing bases for the design of a hidden and silent underwater moving body.
Description
Technical field
The present invention relates to a kind of sound eliminating tile made from the rare-earth super-magnetic telescopic material.
Background technology
Underwater moving body is because under water when moving, on the one hand, because the double vibrations of the rotation of propeller, machinery and liquid motion meeting produce stronger radiated noise, if the radiated noise level of underwater moving body is higher, just be easy to be detected, be unfavorable for one's own side's disguise and safety by unfriendly target; On the other hand, the too high meeting of the self noise of underwater moving body itself has a strong impact on the detection ranging coverage of self sonar.
For addressing the above problem, at present, countries in the world all are that sound eliminating tile is laid on the movable body surface under water.Sound eliminating tile is a kind of a kind of measure fairly obvious to the underwater moving body noise reduction, also is simultaneously present the most effective a kind of method that reduces submarine noise.Present novel routine of equipping in countries in the world and atomic submarine have all adopted this noise reduction means basically.Its principle of noise reduction is to produce impedance match between movable body and the seawater under water, make sound wave can import in the sound eliminating tile, because the effect of the shock damping action of sound eliminating tile material and watt internal cavity or weighting material makes the waveform of sound wave that conversion take place, thereby sound wave is weakened or be absorbed fully.
Summary of the invention
Technical matters to be solved by this invention provides a kind of sound eliminating tile made from the rare-earth super-magnetic telescopic material, can suppress the vibration that underwater moving body self produces, isolate underwater moving body inner machine noise to the underwater moving body radiation, when reducing the body noise, also improved the service conditions of underwater moving body sonar, actv. improves the detection range of underwater moving body sonar.
Solving the scheme that technical matters of the present invention adopts is: at first according to the shape of underwater moving body, design and manufacturing have certain radian and the super magnetic telescopic material of thickness solid rare earth piece, the sulfuration of the super magnetic telescopic material of this solid rare earth piece is packaged in the novel neoprene piece, forms thickness between the 50-100 millimeter.Then distinguish the different position of underwater moving body surface of shell, with epoxy resin with the be laid in surface of shell of underwater moving body of novel neoprene piece.The sound eliminating tile that this rare-earth super-magnetic telescopic material is made both can significantly reduce the reflection strength of the sound wave of active sonar, also can suppress the vibration that underwater moving body self produces, isolate underwater moving body inner machine noise to the underwater moving body radiation, significantly reduce the underwater moving body self noise.
The present invention is determined in the reduction of the radiated noise and the self noise of underwater moving body, thereby to guarantee that underwater moving body is not detected the safety of navigation that guarantees one's own side by unfriendly target.According to the density of rare-earth super-magnetic telescopic material surface charge this groundwork that is directly proportional with suffered pressure, vibration that sound wave that sends when active sonar or underwater moving body self produce and underwater moving body inner machine noise contributions are during in this sound eliminating tile, can produce pressure to rare-earth super-magnetic telescopic material piece, thereby cause the inner positive and negative charge center relative displacement of rare-earth super-magnetic telescopic material and polarize, make rare-earth super-magnetic telescopic material two end surfaces opposite polarity bound charge occur, form faint electromagnetic field, and then can significantly reduce the reflection strength of sound wave of active sonar and the radiated noise and the self noise of underwater moving body.It is except absorbing the sound wave of active sonar, reduce the reflection strength of sound wave, reduce outside the detection range of active sonar, because the characteristic that rare-earth super-magnetic telescopic material itself is had has also been improved the service conditions of underwater moving body sonar, actv. improves the detection range of underwater moving body sonar.
The invention has the beneficial effects as follows:
1. be core with the rare-earth super-magnetic telescopic material, set up the reflection strength that reduces the sound wave of active sonar, suppress the vibration that underwater moving body self produces, isolate underwater moving body inner machine noise, reduce the new design concept and the design philosophy of underwater moving body self noise to the underwater moving body radiation;
2. the design for the underwater moving body of hidden-type, calm type provides foundation.
Below in conjunction with accompanying drawing of the present invention, further describe its specific embodiment.
Description of drawings
Fig. 1 is an agent structure scheme drawing of the present invention.
Fig. 2 is that rare-earth super-magnetic telescopic material piece of the present invention lays, installs, connects partial schematic diagram.
The specific embodiment
Among Fig. 1 and Fig. 2: underwater moving body 1, sound eliminating tile 2, novel neoprene 3, arc rare-earth super-magnetic telescopic material piece 4.
The sound eliminating tile that the rare-earth super-magnetic telescopic material is made is made of novel neoprene 3, arc rare-earth super-magnetic telescopic material piece 4.
At first according to the shape of underwater moving body, design and manufacturing have certain radian and the super magnetic telescopic material of thickness solid rare earth piece, and the sulfuration of the super magnetic telescopic material of this solid rare earth piece is packaged in the novel neoprene piece, form thickness between the 50-100 millimeter.Then distinguish the different position of underwater moving body surface of shell, with epoxy resin with the be laid in surface of shell of underwater moving body of novel neoprene piece.Vibration that sound wave that sends when active sonar or underwater moving body self produce and underwater moving body inner machine noise contributions are during in this sound eliminating tile, can produce pressure to rare-earth super-magnetic telescopic material piece, thereby cause the inner positive and negative charge center relative displacement of rare-earth super-magnetic telescopic material and polarize, make rare-earth super-magnetic telescopic material two end surfaces opposite polarity bound charge occur, form faint electromagnetic field.The sound eliminating tile that this rare-earth super-magnetic telescopic material is made both can significantly reduce the reflection strength of the sound wave of active sonar, also can suppress the vibration that underwater moving body self produces, isolate underwater moving body inner machine noise to the underwater moving body radiation, significantly reduce the underwater moving body self noise.
Claims (2)
1. a sound eliminating tile made from the rare-earth super-magnetic telescopic material is characterized in that: the sulfuration of the super magnetic telescopic material of arc solid rare earth piece is packaged in the novel neoprene.
2. the sound eliminating tile that rare-earth super-magnetic telescopic material as claimed in claim 1 is made is characterized in that: be laid in underwater moving body surface of shell and bridge surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010241084XA CN101927819A (en) | 2010-07-30 | 2010-07-30 | Anechoic tile prepared from rare-earth super-magnetic flexible material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010241084XA CN101927819A (en) | 2010-07-30 | 2010-07-30 | Anechoic tile prepared from rare-earth super-magnetic flexible material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101927819A true CN101927819A (en) | 2010-12-29 |
Family
ID=43367333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010241084XA Pending CN101927819A (en) | 2010-07-30 | 2010-07-30 | Anechoic tile prepared from rare-earth super-magnetic flexible material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101927819A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259698A (en) * | 2011-07-21 | 2011-11-30 | 昆明理工大学 | Anechoic tile based on composite material |
| CN103183120A (en) * | 2013-03-14 | 2013-07-03 | 昆明理工大学 | Volcanic rock noise elimination tile |
-
2010
- 2010-07-30 CN CN201010241084XA patent/CN101927819A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259698A (en) * | 2011-07-21 | 2011-11-30 | 昆明理工大学 | Anechoic tile based on composite material |
| CN103183120A (en) * | 2013-03-14 | 2013-07-03 | 昆明理工大学 | Volcanic rock noise elimination tile |
| CN103183120B (en) * | 2013-03-14 | 2017-02-22 | 昆明理工大学 | Volcanic rock noise elimination tile |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101229 |