CN203594488U - Universal type resistant silencer - Google Patents
Universal type resistant silencer Download PDFInfo
- Publication number
- CN203594488U CN203594488U CN201320823821.6U CN201320823821U CN203594488U CN 203594488 U CN203594488 U CN 203594488U CN 201320823821 U CN201320823821 U CN 201320823821U CN 203594488 U CN203594488 U CN 203594488U
- Authority
- CN
- China
- Prior art keywords
- pressure
- noise reduction
- baffle plate
- noise
- shell cover
- 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.)
- Expired - Lifetime
Links
- 230000003584 silencer Effects 0.000 title abstract description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 1
- 230000001743 silencing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000011358 absorbing material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model relates to a silencing device used by a power device, in particular to a universal type resistant silencer. The universal type resistant silencer comprises an inlet tube, a pressure-bearing shell cover, a pressure-bearing cylinder, silencing baffles, shunting baffles, connection rib plates, an outer cylinder, an outer shell cover and an outlet tube, wherein the outer cylinder, the pressure-bearing shell cover with the inlet tube, and the outer shell cover with the outlet tube are arranged outside the pressure-bearing cylinder; the two ends of the outer cylinder are connected with the pressure-bearing shell cover and the outer shell cover respectively; the inner side of the pressure-bearing cylinder is connected with the outer edges of the multiple silencing baffles; each silencing baffle is of a megaphone-shaped metal structure; the inner edge of each silencing baffle is connected with the corresponding shunting baffle through the corresponding connection rib plate. The universal type resistant silencer occupies a small space, is better in economical efficiency, meets requirements of usage occasions with gas containing liquid and dust, and has a good silencing effect for various use conditions.
Description
Technical field
The utility model relates to the silencer that power plant are used, particularly a kind of universal resistant noise-reducing device.
Background technique
When internal-combustion engine and the running of compressor equal power device, can produce larger aerodynamic noise, aerodynamic noise spreads in environment towards periphery through piping, and people's Working Life is brought to inconvenience.For slow-revving power plant, noise, take low frequency as main, is now installed resistant noise-reducing device conventionally on gas communication pipeline.At present, resistant noise-reducing device is mainly divided into expanssion type baffler, resonant baffler and interfere type baffler.Expanssion type baffler is the composite structure of general using Inserting Tube and expansion chamber or offers a fairly large number of small structure, the sound transmission passage of Formation cross-section sudden change; Resonant baffler is the aperture of offering some on sound transmission passage, and is communicated with by the outer airtight cavity of each aperture and pipe, thereby forms resonator system; Interfere type baffler is to reach noise elimination object by the destructive interference of relevant sound wave in certain region.
In practical application, above-mentioned pattern baffler has the following disadvantages,
1, for expanssion type baffler, erasure effect and divergence ratio are in close relations, and divergence ratio is larger, erasure effect is better, but be subject to the restriction of manufacture cost, gas-flow resistance and installing space, and divergence ratio design load is generally less than 5, and therefore noise reduction ability is restricted;
2, for resonant baffler, in the time that the gas in pipeline contains drop or other impurity, drop or other impurity can stop aperture, and are gathered in resonating cativty, and the resonant frequency of cavity also changes thereupon, thereby affects erasure effect;
3, for interfere type baffler, not only effectively operating frequency range is very narrow, and for some frequency range outside non-effective operating frequency range, also can make the stack of sound wave intensity, therefore for frequency band compared with for wide noise, erasure effect is extremely undesirable.
Model utility content
The purpose of this utility model is to provide a kind of universal resistant noise-reducing device, mainly solve above-mentioned deficiency of the prior art, it be a kind of less, Economy of taking up room better, meet the use occasion of gas band liquid band dust and all have the resistant noise-reducing device of good erasure effect for various applying working conditions.
For achieving the above object, the utility model is to realize like this.
A kind of universal resistant noise-reducing device, is characterized in that: it comprises inlet duct, pressure closure, pressure cylinder, noise reduction baffle plate, distributing damper, connection gusset, outer cylinder body, outside head and outer pipe; Wherein: pressure cylinder is outside equipped with outer cylinder body, have the pressure closure of inlet duct and have the outside head of outer pipe, and outer cylinder body two ends connect respectively pressure closure, outside head; This pressure cylinder inner side is connected with the outer rim of several noise reduction baffle plates, and each noise reduction baffle plate is loudspeaker cartridge type Structural Hardware, and each noise reduction baffle plate inner edge is connected with distributing damper by connecting gusset.
Described universal resistant noise-reducing device, is characterized in that: the open-angle of each noise reduction baffle plate is 120 °.
Described universal resistant noise-reducing device, is characterized in that: distributing damper is cone type Structural Hardware, and its open-angle is 120 °.
Described universal resistant noise-reducing device, is characterized in that: also there is bearing rib, and this bearing rib one end joint noise reduction baffle plate, the other end is connected with pressure cylinder.
Described universal resistant noise-reducing device, is characterized in that: between this pressure cylinder and outer cylinder body, pressure closure, outside head, be provided with sound-absorption glass cotton.
The utility model has the advantage of:
1, sound wave enters baffler forward when rectilinear propagation through baffler inlet duct, sound wave can run into distributing damper, and its direction of propagation deflects under the reflecting action of distributing damper, make most sound directions of wave travel there is reverse component, the sound wave that small part still has forward component continues propagate and run into noise reduction baffle plate, and the reflecting action of noise reduction baffle plate makes this part sound wave also have reverse component.
2, the sound wave that enters baffler will, through the reflecting action of distributing damper, noise reduction baffle plate, pressure-bearing shell and pressure closure repeatedly, could pass through silencing end.Sound wave is every through once transmitting, and the energy of sound wave will produce once loss.Sound wave is through multiple reflections, and sound pressure level will obviously decline.
3, sound wave, when reflection occurs for pressure-bearing shell surface, must follow a small amount of sound wave outwards to disseminate through pressure-bearing shell, and coated sound-absorption glass cotton outside baffler, can fully absorb the noise that this part outwards disseminates.
4, the reflection of noise reduction baffle plate has certain interference effect to sound wave, according to the spacing of target frequency design baffle plate, distributing damper and noise reduction baffle plate are used in conjunction with in addition, and baffle plate number is more, erasure effect is better, and the number of baffle plate and spacing determine the length of baffler.
5, sound-absorbing material is placed in pressure-bearing shell outside, therefore can not contact with the gas in pipeline, even if gas, with liquid dust, also can not impact sound-absorbing material or internal structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one preferred embodiment.
Fig. 2 is that the A of Fig. 1 is to structural profile schematic diagram.
Embodiment
Refer to Fig. 1,2, the utility model discloses a kind of preferred embodiment of universal resistant noise-reducing device.As shown in the figure: it comprises inlet duct 1, pressure closure 2, pressure cylinder 3, noise reduction baffle plate 4, distributing damper 6, connects gusset 7, outer cylinder body 8, outside head 10 and outer pipe 11.Wherein: pressure cylinder 3 is outside equipped with outer cylinder body 8, have the pressure closure 2 of inlet duct 1 and have the outside head 10 of outer pipe 11, and outer cylinder body 8 two ends connect respectively pressure closure 2, outside head 10; These pressure cylinder 3 inner sides are connected with the outer rim of several noise reduction baffle plates 4, and each noise reduction baffle plate 4 is loudspeaker cartridge type Structural Hardware, each noise reduction baffle plate 4 inner edges by connect gusset 7(as: four) be connected with distributing damper 6.
As a kind of preferred structure, the open-angle of each noise reduction baffle plate 4 is 120 °.
As a kind of preferred structure, distributing damper 6 is cone type Structural Hardware, and its open-angle is 120 °.
In addition, this example also has bearing rib 5, these bearing rib 5 one end joint noise reduction baffle plates 4, and the other end is connected with pressure cylinder 3, and bearing rib 5 provides the supplemental support power of noise reduction baffle plate 4.
As a kind of preferred structure, between this pressure cylinder 3 and outer cylinder body 8, pressure closure 2, outside head 10, be provided with sound-absorption glass cotton 9.
When the utility model baffler is installed, inlet flange is connected with sound wave source direction pipeline, outlet(discharge) flange 12 spreads out of direction pipeline with sound wave and is connected.Pressure cylinder 3 is set according to design pressure with the wall thickness of pressure closure 2, and the number of noise reduction baffle plate 4 is decided by the noise reduction of expecting.
Be only preferred embodiment of the present utility model in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should be technology category of the present utility model.
Claims (5)
1. a universal resistant noise-reducing device, is characterized in that: it comprises inlet duct (1), pressure closure (2), pressure cylinder (3), noise reduction baffle plate (4), distributing damper (6), connects gusset (7), outer cylinder body (8), outside head (10) and outer pipe (11); Wherein: pressure cylinder (3) is outside equipped with outer cylinder body (8), have the pressure closure (2) of inlet duct (1) and have the outside head (10) of outer pipe (11), and outer cylinder body (8) two ends connect respectively pressure closure (2), outside head (10); This pressure cylinder (3) inner side is connected with the outer rim of several noise reduction baffle plates (4), and each noise reduction baffle plate (4) is loudspeaker cartridge type Structural Hardware, and each noise reduction baffle plate (4) inner edge is connected with distributing damper (6) by connecting gusset (7).
2. universal resistant noise-reducing device according to claim 1, is characterized in that: the open-angle of each noise reduction baffle plate (4) is 120 °.
3. universal resistant noise-reducing device according to claim 1, is characterized in that: distributing damper (6) is cone type Structural Hardware, and its open-angle is 120 °.
4. universal resistant noise-reducing device according to claim 1, is characterized in that: also there is bearing rib (5), and this bearing rib (5) one end joint noise reduction baffle plate (4), the other end is connected with pressure cylinder (3).
5. according to the universal resistant noise-reducing device described in claim 1 or 2 or 3 or 4, it is characterized in that: between this pressure cylinder (3) and outer cylinder body (8), pressure closure (2), outside head (10), be provided with sound-absorption glass cotton (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320823821.6U CN203594488U (en) | 2013-12-16 | 2013-12-16 | Universal type resistant silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320823821.6U CN203594488U (en) | 2013-12-16 | 2013-12-16 | Universal type resistant silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594488U true CN203594488U (en) | 2014-05-14 |
Family
ID=50675382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320823821.6U Expired - Lifetime CN203594488U (en) | 2013-12-16 | 2013-12-16 | Universal type resistant silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058924A (en) * | 2019-11-25 | 2020-04-24 | 航天时代飞鸿技术有限公司 | Two-stroke aero-engine composite silencer and application |
| CN112867860A (en) * | 2018-08-03 | 2021-05-28 | 波士顿大学基金会 | Air transmission selective silencer using super-open metamaterial |
-
2013
- 2013-12-16 CN CN201320823821.6U patent/CN203594488U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112867860A (en) * | 2018-08-03 | 2021-05-28 | 波士顿大学基金会 | Air transmission selective silencer using super-open metamaterial |
| US11846217B2 (en) | 2018-08-03 | 2023-12-19 | Trustees Of Boston University | Air-transparent selective sound silencer using ultra-open metamaterial |
| US12352190B2 (en) | 2018-08-03 | 2025-07-08 | Trustees Of Boston University | Air-transparent selective sound silencer using ultra-open metamaterial |
| CN111058924A (en) * | 2019-11-25 | 2020-04-24 | 航天时代飞鸿技术有限公司 | Two-stroke aero-engine composite silencer and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |