CN109723926A - A composite exhaust muffler - Google Patents
A composite exhaust muffler Download PDFInfo
- Publication number
- CN109723926A CN109723926A CN201910081603.1A CN201910081603A CN109723926A CN 109723926 A CN109723926 A CN 109723926A CN 201910081603 A CN201910081603 A CN 201910081603A CN 109723926 A CN109723926 A CN 109723926A
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- Prior art keywords
- muffler
- section
- pipe
- hole
- exhaust
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- 239000002131 composite material Substances 0.000 title claims abstract 10
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 239000011358 absorbing material Substances 0.000 claims abstract description 8
- 238000013022 venting Methods 0.000 claims abstract 9
- 238000002347 injection Methods 0.000 claims abstract 5
- 239000007924 injection Substances 0.000 claims abstract 5
- 230000006837 decompression Effects 0.000 claims description 3
- 230000003584 silencer Effects 0.000 description 17
- 230000001105 regulatory effect Effects 0.000 description 14
- 239000003570 air Substances 0.000 description 12
- 230000030279 gene silencing Effects 0.000 description 12
- 230000001413 cellular effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010011878 Deafness Diseases 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 208000016354 hearing loss disease Diseases 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 231100000895 deafness Toxicity 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000888 hearing loss Toxicity 0.000 description 1
- 230000010370 hearing loss Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
本发明公开了一种复合式排气放空消声器，由进气段、消声段、排气段所组成。所述消声段由消声器筒体、一级消声装置、二级消声装置、整流罩构成，所述一级消声装置包括节流降压管、小孔喷注管和锥形孔板，所述二级消声装置为蜂窝式阻性消声段，所述蜂窝式阻性消声段由多个消声片互相垂直设置而成，所述消声器筒体底部开口连接有进气段，所述进气段由圆锥形渐扩管和进气直管构成，所述消声器筒体顶部开口连接有排气段，所述排气段为内壁贴设有一层阻性吸声材料的排气弯管。本发明综合利用了多种消声原理对放空气体进行降噪处理，具有降噪量大、消声频带宽、适用范围广、气流排放更加顺畅等优点。
The invention discloses a composite exhaust venting muffler, which is composed of an intake section, a muffler section and an exhaust section. The muffler section is composed of a muffler cylinder, a primary muffler device, a secondary muffler device, and a fairing. The primary muffler device includes a throttle pressure-reducing pipe, a small-hole injection pipe, and a conical orifice plate. , the secondary muffler device is a honeycomb resistive muffler section, the honeycomb resistive muffler section is formed by a plurality of mufflers arranged vertically to each other, and the opening at the bottom of the muffler cylinder is connected with an air intake section , the intake section is composed of a conical gradually expanding pipe and an intake straight pipe, an exhaust section is connected to the top opening of the muffler cylinder, and the exhaust section is an exhaust section with a layer of resistive sound-absorbing material attached to the inner wall. Air bend. The invention comprehensively utilizes a variety of noise reduction principles to perform noise reduction processing on the vented air, and has the advantages of large noise reduction, noise reduction frequency bandwidth, wide application range, smoother airflow discharge and the like.
Description
Technical field
The invention belongs to silencer technical fields, and in particular to a kind of combined type Gas Exhausting Muffle.
Background technique
Emptying is exhausted in high pressure gas, can generate very strong emptying noise in this process.Reason is to be vented
The gas flow rate that pipe spout sprays is very big, sprays gas and is mixed with ambient air rapidly, in master in mixed process
It flows region and issues intense noise, when noise reaches five, 60 decibels, people just feels ill, and influences to think deeply and concentrate；If
Higher than eight, 90 decibels, just influence whether the health of people: (10 years or more, work 8 hours daily) are exposed to strong for a long time
Hearing loss or noise deafness are also resulted under noise, are even resulted in certain diseases, are influenced daily life.In China's noise
Various standards in, gas is vented noise as a kind of noise very serious, cannot be ignored.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of big noise reduction is provided, anechoic frequency bandwidth, is fitted
With range is wide, airflow exits more smoothly combined type Gas Exhausting Muffle.
To achieve the above object, the present invention takes following technical scheme:
A kind of combined type Gas Exhausting Muffle, is made of air inlet section, muffler section, exhaust section.The muffler section is by disappearing
Sound device cylinder, level-one silencing apparatus, second level silencing apparatus, radome fairing constitute, the level-one silencing apparatus include reducing pressure by regulating flow pipe,
Micropore jet pipe and taper orifice plate, the second level silencing apparatus are cellular resistance noise reduction section, the honeycomb fashion resistance noise reduction section
Be arranged by multiple anechoic sheets are orthogonal, the silencer cylinder bottom opening is connected with air inlet section, the air inlet section by
Conical diffuser and air inlet straight tube are constituted, and the silencer cylinder top opening is connected with exhaust section, and the exhaust section is interior
Wall, which is sticked, the exhaust elbow of one layer of resistive sound-absorbing material.
Further, the conical diffuser bottom port is connect with air inlet straight tube, upper port and reducing pressure by regulating flow pipe
It connects, the cross-sectional area S2 at the maximum gauge of conical diffuser is 2.5~3 of the cross-sectional area S1 at its minimum diameter
Times.
Further, the inside of reducing pressure by regulating flow pipe is arranged in the taper orifice plate, is provided with first through hole on taper orifice plate, institute
The diameter for stating first through hole is 5~10mm, and the aperture gross area S3 of first through hole is at the maximum gauge of conical diffuser
1.5~2 times of cross-sectional area S2.
Further, the reducing pressure by regulating flow pipe top closure, lower end are connected with conical diffuser, reducing pressure by regulating flow pipe
The second through-hole is provided on tube wall, the diameter of second through-hole is 5~10mm, and the aperture gross area S4 of the second through-hole is first
1.5~2 times of the aperture gross area S3 of through-hole.
Further, the micropore jet pipe top closure is set in the outside of reducing pressure by regulating flow pipe, the pipe of micropore jet pipe
Be provided with third through-hole on wall, the diameter of the third through-hole is 1~3mm, the hole heart between adjacent two third through-hole away from for it directly
5~10 times of diameter, and the aperture gross area S5 of third through-hole is 1.5~2 times of the aperture gross area S4 of the second through-hole.
Further, the radome fairing is arranged between level-one silencing apparatus and second level silencing apparatus.
Further, the inner wall of the silencer cylinder is equipped with one layer of resistive sound-absorbing material.
Further, the bottom of the silencer cylinder is additionally provided with drainpipe.
The invention adopts the above technical scheme, which has the following advantages: 1, restricting orifice is processed it is tapered, can be with
Increase the contact area of gas and orifice plate, reduce gas by when resistance so that gas, by more smooth, noise elimination effect is more
Add excellent.2, conical diffuser just can carry out dilatation deceleration to gas before gas enters silencer cylinder.3, cellular
Resistance noise reduction section greatly improves and improves high frequency acoustic characteristics.4, exhaust elbow, which passes through, changes airflow direction and resistive sound absorption,
The jet noise of air-flow can be further decreased.5, radome fairing can be smooth and stablizes high-speed flow, prevents high-speed flow from will disappear
Sound material is broken up.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the B-B cross-sectional view of Fig. 1；
Wherein: 1, silencer cylinder；2, drainpipe；3, air inlet straight tube；4, conical diffuser；5, taper orifice plate；51,
One through-hole；6, reducing pressure by regulating flow pipe；61, the second through-hole；7, micropore jet pipe；71, third through-hole；8, radome fairing；9, anechoic sheet；
10, resistive sound-absorbing material；11, exhaust elbow.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to FIG. 1 to FIG. 3, a kind of combined type Gas Exhausting Muffle is made of air inlet section, muffler section, exhaust section, is disappeared
Sound section is made of silencer cylinder 1, level-one silencing apparatus, second level silencing apparatus, radome fairing 8, and level-one silencing apparatus includes throttling
Decompression tube 6, micropore jet pipe 7 and taper orifice plate 5, second level silencing apparatus are cellular resistance noise reduction section, cellular resistance noise reduction
Section is arranged by multiple anechoic sheets 9 are orthogonal, and cellular resistance noise reduction section greatly improves and improve high frequency acoustic characteristics,
1 bottom opening of silencer cylinder is connected with air inlet section, and air inlet section is made of conical diffuser 4 and air inlet straight tube 3, silencer cylinder
1 top opening of body is connected with exhaust section, and exhaust section is sticked for inner wall the exhaust elbow 11 of one layer of resistive sound-absorbing material 10, is vented
Bend pipe 11 can further decrease the jet noise of air-flow by changing airflow direction and resistive sound absorption.
Conical 4 bottom port of diffuser is connect with air inlet straight tube 3, and upper port is connect with reducing pressure by regulating flow pipe 6, cone
Cross-sectional area S2 at the maximum gauge of diffuser 4 is 2.5~3 times of the cross-sectional area S1 at its minimum diameter, and cone is gradually
The effect of expander 4 is: just carrying out dilatation deceleration to gas before gas enters silencer cylinder 1, reduces the acoustic pressure of insufflation gas
Grade.
The inside of reducing pressure by regulating flow pipe 6 is arranged in taper orifice plate 5, and first through hole 51, first through hole 51 are provided on taper orifice plate 5
Diameter be 5~10mm, and the aperture gross area S3 of first through hole 51 is the cross section at the maximum gauge of conical diffuser 4
Product 1.5~2 times of S2, restricting orifice is processed tapered, can be increased the contact area of gas and orifice plate, be reduced gas and pass through
When resistance so that gas, by more smooth, noise elimination effect is more excellent.
6 top closure of reducing pressure by regulating flow pipe, lower end are connected with conical diffuser 4, are provided on the tube wall of reducing pressure by regulating flow pipe 6
Second through-hole 61, the diameter of the second through-hole 61 is 5~10mm, and the aperture gross area S4 of the second through-hole 61 is first through hole 51
1.5~2 times of aperture gross area S3.
7 top closure of micropore jet pipe is set in the outside of reducing pressure by regulating flow pipe 6, and is provided on the tube wall of micropore jet pipe 7
Three through-holes 71, the diameter of third through-hole 71 are 1~3mm, and the hole heart between adjacent two third through-hole 71 is away from 5~10 for its diameter
Times, and the aperture gross area S5 of third through-hole 71 is 1.5~2 times of the aperture gross area S4 of the second through-hole 61.
Radome fairing 8 is arranged between level-one silencing apparatus and second level silencing apparatus, and radome fairing 8 can be smooth and stablizes high speed
Air-flow prevents high-speed flow from breaking up deadener.
The inner wall of silencer cylinder 1 is equipped with one layer of resistive sound-absorbing material 10, and the auxiliary for being vented emptying is eliminated the noise.
The bottom of silencer cylinder 1 is additionally provided with drainpipe 2, when the inside for having sewage to enter silencer cylinder 1, can incite somebody to action
It is discharged.When the invention works, 3 bottom of air inlet straight tube is connected by ring flange with exhausting pipeline.Air-flow is entering silencer
Before cylinder 1, dilatation deceleration is carried out through conical diffuser 4 first, reduces the sound pressure level of discharge air-flow.Air-flow enters silencer
After cylinder 1, reducing pressure by regulating flow successively is carried out through the vent on taper orifice plate 5, reducing pressure by regulating flow pipe 6, greatly reduces exhaust noise
Acoustical power.Then air-flow is under the shift frequency effect of micropore jet pipe 7, and the frequency of jet noise is moved on to insensitive super of human ear
Audio frequency range, to reduce exhaust noise again.Air-flow is after the ejection of micropore jet pipe 7, successively through silencer cylinder 1, honeycomb fashion
Resistance noise reduction section, the resistive sound absorption of exhaust elbow 11, are finally discharged into atmosphere, the jet noise of air-flow has significantly reduced at this time.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081603.1A CN109723926A (en) | 2019-01-28 | 2019-01-28 | A composite exhaust muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081603.1A CN109723926A (en) | 2019-01-28 | 2019-01-28 | A composite exhaust muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109723926A true CN109723926A (en) | 2019-05-07 |
Family
ID=66301164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910081603.1A Pending CN109723926A (en) | 2019-01-28 | 2019-01-28 | A composite exhaust muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109723926A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056737A (en) * | 2019-05-29 | 2019-07-26 | 青岛科技大学 | A kind of honeycomb rubber lining formula pressure fluctuation attenuator |
| CN110411079A (en) * | 2019-07-05 | 2019-11-05 | 珠海格力电器股份有限公司 | Multistage throttling and pressure reducing device |
| CN111720649A (en) * | 2020-05-26 | 2020-09-29 | 中国检验检疫科学研究院 | Air vent silencer |
| CN112634855A (en) * | 2020-12-31 | 2021-04-09 | 无锡世一电力环保有限公司 | Steam exhaust silencer filled with stainless steel wires |
| CN112629002A (en) * | 2021-01-06 | 2021-04-09 | 施明娣 | Warm air current silencer that leads to of building engineering |
| CN112627939A (en) * | 2020-12-31 | 2021-04-09 | 无锡世一电力环保有限公司 | Impedance composite silencing tower |
| CN113088860A (en) * | 2021-03-23 | 2021-07-09 | 西北工业大学 | Explosion spraying auxiliary device |
| CN114283771A (en) * | 2021-12-31 | 2022-04-05 | 中国航空工业集团公司西安飞机设计研究所 | Combined silencer suitable for high-temperature and high-pressure gas emission |
| CN114459724A (en) * | 2022-04-14 | 2022-05-10 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed free jet wind tunnel noise control device |
| CN114893640A (en) * | 2022-05-30 | 2022-08-12 | 江苏大学 | Noise-reducing, pressure-reducing and temperature-reducing device and valve with same |
| CN115862577A (en) * | 2022-12-15 | 2023-03-28 | 宁波健益检测科技有限公司 | A combined muffler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325459A (en) * | 1980-09-29 | 1982-04-20 | Martin Mack M | Muffler diffuser |
| CN2286243Y (en) * | 1996-09-17 | 1998-07-15 | 胡大伦 | Five-inner tube & double-pyramid noise silencer |
| CN102691549A (en) * | 2011-03-24 | 2012-09-26 | 宜兴市川泽环境工程有限公司 | Impedance combined type silencer |
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN207660684U (en) * | 2017-12-26 | 2018-07-27 | 无锡市盛源汽车配件厂 | The vehicle-exhaust exhaust pipe of water-cooled cooling |
| CN208396777U (en) * | 2018-06-06 | 2019-01-18 | 郑州佛光发电设备有限公司 | Diesel generating set low-frequency noise silencer |
-
2019
- 2019-01-28 CN CN201910081603.1A patent/CN109723926A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325459A (en) * | 1980-09-29 | 1982-04-20 | Martin Mack M | Muffler diffuser |
| CN2286243Y (en) * | 1996-09-17 | 1998-07-15 | 胡大伦 | Five-inner tube & double-pyramid noise silencer |
| CN102691549A (en) * | 2011-03-24 | 2012-09-26 | 宜兴市川泽环境工程有限公司 | Impedance combined type silencer |
| CN105987252A (en) * | 2015-02-10 | 2016-10-05 | 厦门嘉达声学技术有限公司 | Compound exhausting emptying silencer |
| CN207660684U (en) * | 2017-12-26 | 2018-07-27 | 无锡市盛源汽车配件厂 | The vehicle-exhaust exhaust pipe of water-cooled cooling |
| CN208396777U (en) * | 2018-06-06 | 2019-01-18 | 郑州佛光发电设备有限公司 | Diesel generating set low-frequency noise silencer |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056737A (en) * | 2019-05-29 | 2019-07-26 | 青岛科技大学 | A kind of honeycomb rubber lining formula pressure fluctuation attenuator |
| CN110056737B (en) * | 2019-05-29 | 2024-06-04 | 青岛科技大学 | Honeycomb rubber lining type pressure pulsation attenuator |
| CN110411079B (en) * | 2019-07-05 | 2023-07-18 | 珠海格力电器股份有限公司 | Multistage throttling and pressure reducing device |
| CN110411079A (en) * | 2019-07-05 | 2019-11-05 | 珠海格力电器股份有限公司 | Multistage throttling and pressure reducing device |
| CN111720649A (en) * | 2020-05-26 | 2020-09-29 | 中国检验检疫科学研究院 | Air vent silencer |
| CN112634855A (en) * | 2020-12-31 | 2021-04-09 | 无锡世一电力环保有限公司 | Steam exhaust silencer filled with stainless steel wires |
| CN112627939A (en) * | 2020-12-31 | 2021-04-09 | 无锡世一电力环保有限公司 | Impedance composite silencing tower |
| CN112629002A (en) * | 2021-01-06 | 2021-04-09 | 施明娣 | Warm air current silencer that leads to of building engineering |
| CN113088860A (en) * | 2021-03-23 | 2021-07-09 | 西北工业大学 | Explosion spraying auxiliary device |
| CN114283771A (en) * | 2021-12-31 | 2022-04-05 | 中国航空工业集团公司西安飞机设计研究所 | Combined silencer suitable for high-temperature and high-pressure gas emission |
| CN114459724A (en) * | 2022-04-14 | 2022-05-10 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed free jet wind tunnel noise control device |
| CN114893640A (en) * | 2022-05-30 | 2022-08-12 | 江苏大学 | Noise-reducing, pressure-reducing and temperature-reducing device and valve with same |
| CN114893640B (en) * | 2022-05-30 | 2023-08-15 | 江苏大学 | A noise-reducing, pressure-reducing and temperature-reducing device and a valve installed with the device |
| CN115862577A (en) * | 2022-12-15 | 2023-03-28 | 宁波健益检测科技有限公司 | A combined muffler |
| CN115862577B (en) * | 2022-12-15 | 2026-03-27 | 宁波健益检测科技有限公司 | A combined silencer |
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Application publication date: 20190507 |
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