CN202181939U - Foamed aluminium evacuation silencer - Google Patents
Foamed aluminium evacuation silencer Download PDFInfo
- Publication number
- CN202181939U CN202181939U CN2010202371959U CN201020237195U CN202181939U CN 202181939 U CN202181939 U CN 202181939U CN 2010202371959 U CN2010202371959 U CN 2010202371959U CN 201020237195 U CN201020237195 U CN 201020237195U CN 202181939 U CN202181939 U CN 202181939U
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- foamed aluminium
- steel
- silencing apparatus
- silencer
- ring
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Abstract
The utility model discloses a foamed aluminium evacuation silencer which adopts through-hole foamed aluminium as acoustical material for the first time and comprises a middle foamed aluminium clapboard (1), a steel bottom plate silencer air-inlet pipe and flange (2), a steel outer shell (3), a multi-level foamed aluminium ring (4) and a foamed aluminium impedance composite silencing device (5), wherein the steel outer shell (3) is a drum with an opening being upward and is welded with the steel bottom plate silencer air-inlet pipe and flange (2), a cavity is left between the foamed aluminium ring at the outermost layer and the steel outer shell, the middle foamed aluminium clapboard (1) is used for dividing the interior of the silencer into two relatively independent spaces, the foamed aluminium impedance composite silencing device (5) is arranged in the upper space, the multi-level foamed aluminium ring (4) formed by one level to multiple levels is arranged in the lower space, and each-level foamed aluminium ring is fixed on a bottom plate through a steel cage or a central screw and a steel cover plate. The foamed aluminium evacuation silencer is suitable for evacuation silencing of various high-pressure gas.
Description
Technical field:
The utility model belongs to new material and uses and noise elimination noise reduction environmental protection field.
Background technique:
The problem that the utility model is wanted to solve is following 4 drawbacks to conventional muffler:
(1) acoustical absorptivity is poor, bulky: highly little then several meters, and greatly then tens meters.
(2) weight is very heavy: inner noise elimination structure uses ferrous materials in a large number, thereby relative weight is quite big, hundreds of kilogram at least, several thousand kilograms at most.
(3) acoustic attenuation performance is unstable: because a large amount of mineral wool class material that adopts; Sound-absorbing material as the emptying silencing apparatus; Mineral wool class material is easy to conglomeration after meeting and wetting, and especially the steam evacuation silencing apparatus is all the more so, we can say from using for the second time just to be difficult to play good noise elimination effect.
(4) because a large amount of mineral wool class material that uses structurally is difficult to assurance; Mineral wool can be dispelled in the use; By the mineral wool that dispelled spread in the air can to around environment cause secondary pollution, in other words mineral wool class silencing apparatus be in the mill, use in or scrap after all can cause secondary pollution to environment.
The utility model is owing to all adopt the acoustical material of this sound-absorbing material of fine-crystal spume aluminium alloy as the emptying silencing apparatus; And through scientific design; Comprehensive various noise-cancelling theory also makes full use of the advantage of this sound-absorbing material of fine-crystal spume aluminium alloy; Not only improve the acoustic attenuation performance of emptying silencing apparatus, also improved the combination property of silencing apparatus simultaneously.Thereby above four drawbacks of conventional muffler are readily solved.
The fine-crystal spume aluminium alloy sound-absorbing material is used for the emptying silencing apparatus has the incomparable comprehensive advantage of other material, and following 6 points are specifically arranged:
(1) sound absorbing capabilities is good, and at first this acoustical material of fine-crystal spume aluminium alloy has the function of porous aperture diffusion, also has the resistance noise reduction function of resistive sound-absorbing material simultaneously.
Need not to rely on other structural material to come structure when (2) the fine-crystal spume aluminium alloy sound-absorbing material structural behaviour that has sound absorbing capabilities and the structural material of functional material is simultaneously used; Also need not the various sound-absorbing materials of plug in cavity again, because foamed aluminium itself is exactly good sound-absorbing material.
(3) intensity in light weight is high, and proportion is about 0.6, is 1/13 of ferrous materials.
(4) high temperature resistant, operating temperature can reach 680 degrees centigrade, greater than the fusing point of aluminium.
(5) be not afraid of humidity and be not afraid of water logging, and also do not influence sound absorbing capabilities after the humidity, foamed aluminium has good corrosion resisting property and good aging quality resistance simultaneously.
(6) use in no any poisonous and harmful substance release, be a kind of sound-absorbing material that can 100% cycling and reutilization.Since adopt the sound-absorbing material of this excellence of fine-crystal spume aluminium alloy, comprehensive various noise-cancelling theorys, and again through scientific design, the foamed aluminium emptying silencing apparatus advantage of processing is outstanding:
(1) noise elimination noise reduction is effective, and noise reduction is big, can reach more than the 50dB.
(2) advantages of small volume of silencing apparatus is wrapped in sound-absorbing material unlike the conventional muffler that kind with perforated plate, and sound-absorbing material can not be played one's part to the full.Because we all adopt the acoustical material of fine-crystal spume aluminium alloy as silencing apparatus; Sound-absorbing material directly contacts air-flow and noise; Thereby improved the sound absorption efficiency of material greatly, and that volume also can be done is very little, has only about 1/5 of traditional said function muffler volume.
(3) very light in weight of silencing apparatus; Owing to all adopt this novel sound-absorbing material of fine-crystal spume aluminium alloy; It has the double attribute of structural material and functional material, thereby in the acoustical absorptivity that improves material, can also reduce the consumption of material, and the proportion of fine-crystal spume aluminium alloy sound-absorbing material has only about 0.6; Be 1/13 of steel perforated plate proportion 7.8, so the weight of congenerous silencing apparatus can be accomplished about 1/10 of conventional construction silencing apparatus weight.
(4) sound absorbing capabilities is stable, because the assurance of material therefor reliability, thereby foamed aluminium emptying silencing apparatus possesses the advantage of stable performance and long service life.
(5) be make, use or scrap after all have no poisonous and harmful substance to discharge, all materials can cycling and reutilization, meets at present the environmental protection theory that we are advocated.
Foamed aluminium emptying silencing apparatus is applicable to the emptying noise elimination of all kinds of high pressure air such as pressurized air, steam, oxygen, nitrogen; Especially more the noise elimination noise reduction that is fit to abominable service condition, as: the noise elimination noise reduction of all kinds of high-voltage high-speed gases that 100 meter per seconds are above and the noise elimination noise reduction of high-pressure steam and high-temperature gas.
The model utility content:
The sound-absorbing material that the present technique scheme is adopted is a fine-crystal spume aluminium alloy; Replace the glass wool that traditional emptying silencing apparatus adopted and added perforated plate; Weight saving, the volume of silencing apparatus reduces, sound deadening capacity increases; Aperture, porosity ratio, surface density, the thickness of the fine-crystal spume aluminium alloy that adopts all are that the intensity according to noise, the requirement of noise reduction can change, and we have made full use of the porous diffusion of this new material of fine-crystal spume aluminium alloy and the sound absorption of self resistive sound-absorbing material.The 30dB 0.2mm the fine-crystal spume aluminium alloy ring individual layer in aperture can be eliminated the noise.Design proposal has been used noise elimination techniques such as shift frequency noise elimination, aperture diffusion noise elimination, resistance noise reduction, reactive muffling, impedance complex noise elimination, and the foamed aluminium emptying silencing apparatus sound deadening capacity that ring was processed in the secondary through holes foamed aluminium was eliminated the noise can reach more than the 50dB.
Introduce in conjunction with accompanying drawing; High-voltage high-speed airflow enters into silencing apparatus inside by the silencing apparatus suction tude of side weld on steel base plate silencing apparatus suction tude and the flange; The effect of first order foamed aluminium ring is that shift frequency is eliminated the noise, and brings up to the frequency of noise more than the 16000Hz, reaches the unheard frequency range of people's ear.Be a resonant cavity between first, second grade foamed aluminium ring, resonant cavity can effectively reduce the sound output of noise.The effect of second level foamed aluminium ring is the aperture spray column, and the dilatation step-down further reduces the sound output of noise.Second level foamed aluminium ring and compound in the enclosure foamed aluminium ring form a resonant cavity, play the effect that acoustic energy is converted into heat energy, and further reduce sound output.The foamed aluminium intermediate clapboard is the effect of playing the porous diffusion, and sound wave all can produce friction and viscous with inner hole rib, the capillary fiber of foamed aluminium through every layer of foamed aluminium the time simultaneously, is absorbed by foamed aluminium thereby make acoustic energy change heat energy into.Foamed aluminium intermediate clapboard top is a foamed aluminium impedance complex noise elimination structure, and the shear wave of noise and the sound output of compressional wave are further reduced, thereby reaches better emptying noise elimination effect.
Foamed aluminium emptying silencing apparatus comprises: foamed aluminium intermediate clapboard 1, steel base plate silencing apparatus suction tude and flange 2, steel shell 3, multistage foamed aluminium ring 4, foamed aluminium impedance complex silencer 5 five parts; It is characterized in that: shell 3 is the drum towards upper shed; The bucket inwall is lined with a foamed aluminium ring; Foamed aluminium ring and steel shell leave certain cavity, and foamed aluminium intermediate clapboard 1 is divided into two relatively independent spaces to silencing apparatus inside, and a top part is a foamed aluminium impedance complex silencer 5; Generally by 1 grade or multistage combining, every grade all is fixed on the base plate by the steel cage multistage foamed aluminium ring 4 according to the requirement of noise intensity and noise reduction.
Description of drawings: accompanying drawing 1 is the sectional drawing of foamed aluminium emptying silencing apparatus.
Accompanying drawing 2 is plan views of foamed aluminium emptying silencing apparatus.
(1) foamed aluminium intermediate clapboard
(2) steel base plate silencing apparatus suction tude and flange
(3) steel shell
(4) multistage foamed aluminium ring
(5) foamed aluminium impedance complex silencer
Embodiment:
Embodiment: (one)
The external diameter of silencing apparatus is 133mm, highly is 333mm, and the suction tude diameter is 28mm;
First order foamed aluminium ring internal diameter is 20mm, and external diameter is 28mm, highly is 50mm, and the aperture is 0.3mm;
Second level foamed aluminium ring internal diameter is 62mm, and external diameter is 72mm, highly is 80mm, and the aperture is 0.8mm;
Steel shell liner third level foamed aluminium ring internal diameter is 105mm, and external diameter is 115mm, and the hypomere height is 220mm, and the epimere height is 80mm, and the aperture is 2mm;
Foamed aluminium intermediate clapboard diameter is 125mm, highly is 12mm, and the aperture is 2mm;
The foamed aluminium impedance complex noise elimination structure on foamed aluminium intermediate clapboard top is that the employing aperture is 2mm, and thickness is that the foamed aluminium acoustic board of 8mm combines.
It is 1.2mpa that above silencing apparatus is used for pressure, and volume is 1.5m
3Pressurized air emptying, noise is reduced to 72dB from 124.8dB before and after fixing a silencer, and reduces 52.8dB.
120 seconds in line times spent of emptying time, install 125 seconds times spent behind the foamed aluminium emptying silencing apparatus additional.
Embodiment: (two)
Used three layers of foamed aluminium ring, do not had steel shell, shell also is a foamed aluminium, and the height of silencing apparatus is 300mm, and diameter is 120mm, and the suction tude diameter is 25mm;
First order foamed aluminium ring internal diameter is 20mm, and external diameter is 28mm, highly is 50mm, and the aperture is 0.3mm;
Second level foamed aluminium ring internal diameter is 62mm, and external diameter is 72mm, highly is 80mm, and the aperture is 0.8mm;
Third level foamed aluminium ring internal diameter is 100mm, and external diameter is 120mm, highly is 300mm, and the aperture is 2mm.
Three layers of foamed aluminium ring add the steel cover plate with center bolt to be made it to compress with base plate.
It is 1.2mpa that above silencing apparatus is used for pressure, and volume is 1.5m
3Pressurized air emptying, noise is reduced to 69dB from 124.8dB before and after fixing a silencer, and reduces 55.8dB.120 seconds in line times spent of emptying time, install 125 seconds times spent behind the foamed aluminium emptying silencing apparatus additional.
Claims (1)
1. foamed aluminium emptying silencing apparatus comprises: foamed aluminium intermediate clapboard (1); Steel base plate silencing apparatus suction tude and flange (2), steel shell (3), multistage foamed aluminium ring (4); Foamed aluminium impedance complex silencer (5); It is characterized in that: shell (3) is the drum towards upper shed, and the bucket inwall is lined with a foamed aluminium ring, and foamed aluminium ring and steel shell leave certain cavity; Foamed aluminium intermediate clapboard (1) is divided into two relatively independent spaces to silencing apparatus inside; A top part is a foamed aluminium impedance complex silencer (5); Multistage foamed aluminium ring (4) is generally by 1 grade or multistage combining; Every grade all is fixed on the base plate by the steel cage, and the aperture of the fine-crystal spume aluminium alloy that is adopted, porosity ratio, surface density, thickness all can change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202371959U CN202181939U (en) | 2010-06-18 | 2010-06-18 | Foamed aluminium evacuation silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202371959U CN202181939U (en) | 2010-06-18 | 2010-06-18 | Foamed aluminium evacuation silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181939U true CN202181939U (en) | 2012-04-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202371959U Expired - Lifetime CN202181939U (en) | 2010-06-18 | 2010-06-18 | Foamed aluminium evacuation silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202181939U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400575A (en) * | 2013-08-08 | 2013-11-20 | 常熟市董浜镇徐市鸿磊五金机械厂 | Mechanism sound lowering device |
| CN105888800A (en) * | 2015-01-04 | 2016-08-24 | 江苏东泽环保科技有限公司 | High-toughness ceramic aggregate environment-friendly muffler |
| CN108798829A (en) * | 2017-05-03 | 2018-11-13 | 贵港市厚顺信息技术有限公司 | Foam metal muffler |
| CN113503778A (en) * | 2021-06-28 | 2021-10-15 | 上海机电工程研究所 | Foamed aluminum bonding device and using method thereof |
-
2010
- 2010-06-18 CN CN2010202371959U patent/CN202181939U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103400575A (en) * | 2013-08-08 | 2013-11-20 | 常熟市董浜镇徐市鸿磊五金机械厂 | Mechanism sound lowering device |
| CN105888800A (en) * | 2015-01-04 | 2016-08-24 | 江苏东泽环保科技有限公司 | High-toughness ceramic aggregate environment-friendly muffler |
| CN108798829A (en) * | 2017-05-03 | 2018-11-13 | 贵港市厚顺信息技术有限公司 | Foam metal muffler |
| CN113503778A (en) * | 2021-06-28 | 2021-10-15 | 上海机电工程研究所 | Foamed aluminum bonding device and using method thereof |
| CN113503778B (en) * | 2021-06-28 | 2022-12-13 | 上海机电工程研究所 | Foamed aluminum bonding device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Nuofei New Energy Technology Co., Ltd. Assignor: Jia Wei Contract record no.: 2017990000139 Denomination of utility model: Foamed aluminium evacuation silencer Granted publication date: 20120404 License type: Common License Record date: 20170418 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Jia Wei Document name: Notification of Expiration of Patent Right Duration |
|
| DD01 | Delivery of document by public notice |