CN220895181U - Noise elimination formula exhaust structure for aviation - Google Patents
Noise elimination formula exhaust structure for aviation Download PDFInfo
- Publication number
- CN220895181U CN220895181U CN202322315461.5U CN202322315461U CN220895181U CN 220895181 U CN220895181 U CN 220895181U CN 202322315461 U CN202322315461 U CN 202322315461U CN 220895181 U CN220895181 U CN 220895181U
- Authority
- CN
- China
- Prior art keywords
- tubular structure
- silencing
- muffling
- sheets
- aviation
- 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.)
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Links
- 230000008030 elimination Effects 0.000 title claims description 10
- 238000003379 elimination reaction Methods 0.000 title claims description 10
- 229920000742 Cotton Polymers 0.000 claims abstract description 10
- 230000003584 silencer Effects 0.000 claims description 22
- 230000001413 cellular effect Effects 0.000 claims 1
- 230000030279 gene silencing Effects 0.000 abstract description 34
- 230000000694 effects Effects 0.000 abstract description 15
- 230000009467 reduction Effects 0.000 abstract description 14
- 238000009434 installation Methods 0.000 abstract description 8
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a silencing exhaust structure for aviation, which comprises a tubular structure, wherein a silencing device is arranged in the tubular structure and consists of a plurality of silencing sheets and a plurality of silencers, the silencing device is provided with a plurality of impedance silencing structures and a plurality of silencing sheets, the arrangement structure is special, the structure is novel, glass fiber sound absorbing cotton is arranged at the same time, the structure is simple, the preparation is convenient, the repeatability and the uniformity are higher, the using effect of the silencers is effectively enhanced, the silencing device can be better adapted to the installation environment, the silencing is performed by changing the section, the noise of middle and low frequencies is effectively reduced, the higher noise reduction effect is achieved, and the silencing device has the advantages of small volume, convenience in installation and disassembly and long service life due to reasonable structural arrangement, and solves the problems in the prior art.
Description
Technical Field
The utility model relates to a silencing exhaust structure for aviation.
Background
At present, the existing exhaust muffler has a muffler device which adopts polyester fiber sound absorbing cotton as a sound absorbing material, and has the advantages of being capable of silencing in a wider medium-high frequency range, but not being applicable under special requirements of high temperature, high humidity, sterility, no toxicity and the like, and the silencing effect is only about 10-20dB (A).
There are also muffler with microperforated panel structure alone, which can meet the special requirements but has a large volume, and the noise reduction amount for the friction noise of the gas is not remarkable, and is 10-20dB (A).
If the jet muffler is adopted singly, the sound-absorbing quantity is only about 20-30dB (A), the cleaning treatment is difficult, the sound-absorbing effect is not ideal, and the volume is too large.
Disclosure of utility model
The utility model aims to solve the defects in the prior art and provides a silencing exhaust structure for aviation.
The silencing exhaust structure for aviation includes one tubular structure with silencer inside, and the silencer consists of several silencing sheets and several silencers.
As a further improvement, a plurality of silencers are all fixed in the inside of tubular structure through the baffle, and the angle of putting between the adjacent silencer is 90 degrees, and the silencer runs through to be fixed on the baffle, and the quantity of baffle has two at least, guarantees the stability after the silencer is fixed, and silencer and tubular structure level are arranged, and the inside of tubular structure is got into through the inlet end to the exhaust, then through passing silencer, sound damping piece in proper order, finally follows the end of giving vent to anger and discharges.
As a further improvement, the plurality of silencers are distributed in an annular equidistant array by taking the center of the tubular structure as the center of the circle, and the annular equidistant array is adopted, so that the silencer is simple in structure, convenient to prepare, high in replicability and uniformity and capable of effectively enhancing the use effect of the silencer.
As a further improvement, the plurality of silencers are all impedance type silencing structures, the impedance type silencing structures have lower requirements on installation positions, can be better adapted to installation environments, and can effectively reduce middle-low frequency noise and achieve higher noise reduction effects by changing the cross section.
As a further improvement, a plurality of sound-damping sheets are equidistant array arrangement, and the both sides lateral wall of sound-damping sheet all is the arc structure with the inside wall fixed connection of tubular structure, and the both sides lateral wall of sound-damping sheet all is the arc structure, and the equidistant array arrangement of sound-damping sheet is in the inside of tubular structure, and the homogeneity is stronger, can play stronger amortization effect, effectively improves tubular structure's structural strength simultaneously.
As a further improvement, the surfaces of the plurality of silencing sheets are all wrapped with sound absorption cotton, round corners are chamfered at the edges of the two sides of the silencing sheets, and the sound absorption cotton is made of glass fibers.
As a further improvement, the plurality of mufflers are all installed at the air inlet end inside the tubular structure, the plurality of muffling sheets are all installed at the air outlet end inside the tubular structure, and the air flow can play a noise reduction effect in the flowing process.
As a further improvement, the surfaces of the inner side wall, the plurality of silencing sheets and the baffle plate of the tubular structure are provided with a plurality of honeycomb-shaped round holes, and when the air flow passes through the tubular structure, the honeycomb-shaped round holes can generate certain impedance to the air flow, so that the noise reduction effect is achieved.
The beneficial effects are that:
The device is provided with a plurality of impedance type silencing structures and a plurality of silencing sheets, the arrangement structure is special, the structure is novel, glass fiber sound absorbing cotton is arranged at the same time, a plurality of sound absorbing devices are adopted, the device is simple in structure, convenient to manufacture, high in replicability and uniformity, the using effect of the silencer is effectively enhanced, the device can be better adapted to the installation environment, silencing is carried out by changing the section, low-medium-high-frequency noise is effectively reduced, the higher noise reduction effect is achieved, and the device has the advantages of small volume, convenience in installation and disassembly and long service life due to reasonable structural arrangement, so that the device effectively solves the problems existing in the prior art.
Drawings
FIG. 1 is a schematic view of the internal overall structure of an exhaust structure;
FIG. 2 is a schematic cross-sectional view of an exhaust structure;
1. sound damping sheet 2, muffler 3, tubular structure 4, sound absorbing cotton 5 and baffle.
Detailed Description
The present utility model will be further described in detail with reference to the following examples and drawings for the purpose of enhancing the understanding of the present utility model, which examples are provided for the purpose of illustrating the present utility model only and are not to be construed as limiting the scope of the present utility model.
As shown in fig. 1 to 2, as a specific embodiment of the present utility model, a muffler type exhaust structure for aviation includes a muffler sheet 1, a muffler 2, a tubular structure 3, sound absorbing cotton 4, and a partition 5.
The utility model provides an aviation is with noise elimination formula exhaust structure, includes tubular structure 3, and tubular structure 3's inside is equipped with noise elimination device, and noise elimination device comprises a plurality of sound attenuation pieces 1 and a plurality of silencer 2.
The inside at tubular structure 3 is all fixed through baffle 5 to a plurality of silencers 2, and silencer 2 runs through to be fixed on baffle 5, and the quantity of baffle 5 has two at least, guarantees the stability after silencer 2 is fixed, and silencer 2 and tubular structure 3 level are arranged, and the inside of tubular structure 3 is got into through the inlet end to the exhaust, then through passing silencer 2, silencing piece 1 in proper order, finally follows the end discharge of giving vent to anger.
The plurality of silencers 2 are distributed in an annular equidistant array by taking the center of the tubular structure 3 as the center of a circle, and the annular equidistant array is adopted, so that the silencer is simple in structure, convenient to prepare, high in replicability and uniformity and capable of effectively enhancing the use effect of the silencers 2.
The plurality of silencers 2 are impedance type silencing structures, the impedance type silencing structures have lower requirements on installation positions, can be better adapted to installation environments, can be used for silencing by changing the sections, effectively reduce middle-low frequency noise, and achieve higher noise reduction effects.
The plurality of silencing sheets 1 are arranged in an equidistant array, the silencing sheets 1 are arranged in the tubular structure 3 in an equidistant array mode, the uniformity is higher, a stronger silencing effect can be achieved, and meanwhile the structural strength of the tubular structure 3 is effectively improved.
The surfaces of the plurality of silencing sheets 1 are wrapped with sound absorption cotton 4, and the sound absorption cotton 4 is made of glass fiber, so that the sound absorption plate has the advantages of high sound absorption rate, good sound insulation performance, good heat insulation performance, good flame retardance, nonflammability and low cost.
The air inlet ends of the inside of the tubular structure 3 are respectively provided with a plurality of mufflers 2, the air outlet ends of the inside of the tubular structure 3 are respectively provided with a plurality of muffling sheets 1, and the air flow can have a noise reduction effect in the flowing process.
The inner side wall of the tubular structure 3, the plurality of silencing sheets 1 and the surfaces of the partition plates 5 are provided with a plurality of honeycomb-shaped round holes, and when air flows through the tubular structure 3, the honeycomb-shaped round holes can generate certain impedance to the air flow, so that the noise reduction effect is achieved.
When the silencer is used, the tubular structure 3 is an exhaust silencing tower, air flows into the tubular structure 3 through the air inlet end, then is subjected to primary silencing and noise reduction treatment through the silencer 2, enters the silencing sheet 1 to be subjected to secondary noise reduction after passing through the silencer 2, and is subjected to tertiary noise reduction by utilizing the honeycomb round holes when passing through the pipeline structure, and the noise reduction effect is greatly improved by combining the silencer 2, the honeycomb round holes and the silencing sheet 1 to perform multiple noise reduction.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. The utility model provides an aviation is with noise elimination formula exhaust structure, includes tubular structure, its characterized in that, tubular structure's inside is equipped with noise elimination device, and noise elimination device comprises a plurality of sound elimination piece and a plurality of silencer, a plurality of silencers are all fixed in tubular structure's inside through the baffle, and the angle of putting between the adjacent silencer is 90 degrees, and a plurality of silencers all use tubular structure's center to be annular equidistance array arrangement as the centre of a circle, a plurality of cellular round holes have all been seted up on tubular structure's inboard lateral wall, a plurality of sound elimination piece, the surface of baffle.
2. The muffling exhaust structure for aviation according to claim 1, wherein the plurality of mufflers are all arranged in an annular equidistant array with the center of the tubular structure as the center.
3. The muffling exhaust structure for aviation according to claim 1, wherein each of the plurality of mufflers is an impedance muffling structure.
4. The muffling exhaust structure for aviation according to claim 1, wherein the plurality of muffling sheets are arranged in an equidistant array, side walls on two sides of the muffling sheets are fixedly connected with the inner side walls of the tubular structure, and the side walls on two sides of the muffling sheets are arc-shaped.
5. The muffling exhaust structure for aviation according to claim 1, wherein the surfaces of the muffling sheets are wrapped with sound absorbing cotton, and rounded corners are formed at the edges of the two sides of the muffling sheets.
6. The muffling exhaust structure for aviation according to claim 1, wherein the plurality of mufflers are each installed at an inlet end inside the tubular structure, and the plurality of muffling sheets are each installed at an outlet end inside the tubular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322315461.5U CN220895181U (en) | 2023-08-28 | 2023-08-28 | Noise elimination formula exhaust structure for aviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322315461.5U CN220895181U (en) | 2023-08-28 | 2023-08-28 | Noise elimination formula exhaust structure for aviation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220895181U true CN220895181U (en) | 2024-05-03 |
Family
ID=90875715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322315461.5U Active CN220895181U (en) | 2023-08-28 | 2023-08-28 | Noise elimination formula exhaust structure for aviation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220895181U (en) |
-
2023
- 2023-08-28 CN CN202322315461.5U patent/CN220895181U/en active Active
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| GR01 | Patent grant | ||
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