CN201687556U - Automobile exhaust pipeline static mixer - Google Patents
Automobile exhaust pipeline static mixer Download PDFInfo
- Publication number
- CN201687556U CN201687556U CN2010201987145U CN201020198714U CN201687556U CN 201687556 U CN201687556 U CN 201687556U CN 2010201987145 U CN2010201987145 U CN 2010201987145U CN 201020198714 U CN201020198714 U CN 201020198714U CN 201687556 U CN201687556 U CN 201687556U
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- CN
- China
- Prior art keywords
- automobile exhaust
- exhaust pipeline
- fin
- pipeline static
- mixer
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses an automobile exhaust pipeline static mixer which comprises a pipe body, fins and a nozzle, and is characterized in that the nozzle is arranged on the pipe body, the sections of the fins are V-shaped, and a plurality of wings with different lengths are radially arranged in the pipe body alternatively. By adopting the V-shaped fins, the automobile exhaust pipeline static mixer can effectively increase gas disturbance, enable the waste gas and urea to be fully disturbed and mixed by the mixer and obtain higher uniformity before entering an SCR catalytic converter for further full reaction so as to reduce the content of NOx in the tail gas of the automobile. By alternative arrangement of the fins with different lengths, disturbance can be conducted by utilizing different strength thereof, and pressure drop caused by middle materials can be reduced. After the calculation and analysis by special FIRE design software of AVL, the mixer with the structure is good in mixing effect and small in exhaust back pressure, thus achieving the purposes of enabling the ejected urea and the tail gas to be fully mixed, and not generating large pressure drop.
Description
Technical field
The utility model belongs to the automobile exhaust system field, relates to a kind of automobile exhaust pipeline static mixer in particular.
Background technique
At present, the application of pipeline static mixer on automobile more and more widely now become the mixing situation of improving urea water and tail gas, reduces a kind of development trend of NOx discharging.In general, present vent systems all requires under the prerequisite that satisfies exhaust back pressure and not loss effective engine power, reduces the NOx discharging as much as possible.Therefore, present automobile exhaust system all requires urea water and tail gas can access sufficient mixing before entering the SCR catalyst converter, because only have the mixer of higher inhomogeneity urea and tail gas, could in the SCR catalyst converter, react fully, and then reduce the discharge amount of NOx.But, arrange that mixer contradicts with the reduction exhaust resistance usually, i.e. the setting of mixer is many more, and the exhaust back pressure of vent systems is just big more, and corresponding effective engine power consume is also just many more.And if do not adopt certain mixer, urea and tail gas are fully mixed before entering the SCR catalyst converter, reach the purpose that significantly reduces NOx.
Summary of the invention
To be solved in the utility model is the problems referred to above that prior art exists, and aims to provide a kind of static mixer that is used in the automobile exhaust pipeline, not only can not produce very big pressure drop again so that the urea water of nozzle ejection and tail gas are mixed fully.
In order to address the above problem, the technological scheme that this patent adopts is:
A kind of automobile exhaust pipeline static mixer, comprise body, fin and nozzle, it is characterized in that described nozzle is arranged on the body, described fin comprises long fin and short limb sheet, each fin cross section is " V " font, and a plurality of fins radially are arranged in the body by the mode that long fin and short limb sheet replace.
The utility model adopts " V " font fin, can increase the gas disturbance effectively, obtain abundant disturbance after making waste gas and urea by mixer and mix, before entering the SCR catalyst converter, obtain higher uniformity, and then react fully, to reduce the content of NOx in the vehicle exhaust.Adopt the different fin intercross arrangement of length, both can utilize its different structure to strengthen disturbance, can reduce the pressure drop that medium material partly causes again.Through the computational analysis of the FIRE of AVL special designs software, the mixer good mixing effect of this structure, exhaust back pressure is little, reaches both to make that the urea and the tail gas that spray are mixed fully, can not produce the purpose of very big pressure drop.
According to the utility model, described body one end links to each other with exhaust duct by adpting flange, and the other end links to each other with rear end pipeline or catalyst converter.Thereby the utility model can link to each other with exhaust duct by dismountable mode.
According to the utility model, described nozzle is arranged on the downstream of body.Under low temperature condition, urea liquid deposits easily, and nozzle is arranged on the mixer back, has avoided depositing on mixer, stops up the problem of exhaust duct.Nozzle location is located at the flow-disturbing active region, can allow urea and tail gas mix fully, reduces deposition.
According to the utility model, described fin is bent into several angle by steel plate and makes, and is fixed by welding on the body, and the other end is unsettled.
According to the utility model, " V " shape angle of described fin is 30 degree-70 degree, preferred 30 degree-45 degree, more preferably 30 degree or 45 degree.Being advisable of described fin with the 6-10 sheet, preferred 8.
According to the utility model, the body of described mixer adopts 304 above stainless steel materials to make.
Description of drawings
Fig. 1 is the automotive exhaust system structure schematic representation.
Be labeled as among the figure: 1, adpting flange; 2, body; 3, mixer fin; 4, nozzle; 5, mixer rear end pipeline; 6, catalyst converter; 7, catalyst carrier; 8, pipeline behind the catalyst converter; 9, adpting flange; 10, adpting flange.
Fig. 2 is the mixer front view;
Fig. 3 is the mixer plan view;
Fig. 4 is the front view of mixer fin.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to the embodiment of this patent, for example: the effect of mutual alignment relation between the shape of each structure, structure and the each several part and annexation, each several part and working principle etc. are done further detailed explanation:
A kind of automobile exhaust pipeline static mixer of this patent, utilize cross one another fin with certain subtended angle, obtaining abundant disturbance after making waste gas and urea by mixer mixes, before entering the SCR catalyst converter, obtain higher uniformity, and then react fully, to reduce the content of NOx in the vehicle exhaust.
As described in accompanying drawing 2, a kind of automobile exhaust pipeline static mixer of the present utility model, comprise body 2, fin 3 and nozzle 4, it is characterized in that described nozzle 4 is arranged on the body 2, described fin 3 comprises long fin 32 and short limb sheet 31, each fin cross section is " V " font, and a plurality of fins 3 radially are arranged in the body 2 by the mode that long fin 32 and short limb sheet 31 replace.
Described body 2 two ends link to each other with rear end pipeline 5 with exhaust duct by adpting flange 1,9 respectively.Described nozzle 4 is arranged on the downstream of body 3.
Described fin 3 is bent into several angle by steel plate and makes, and by welding on the inwall that evenly is fixed on body 2, the other end is unsettled.The subtended angle of described fin 3 is used to enlarge the intensity of disturbance.Can carry out suitable modification to subtended angle according to desired pressure drop and strength of turbulence, simple and easy to do.Preferred 30 degree or 45 degree, quantity is 8.
Nozzle 4 is arranged on the mixer back, has avoided on mixer, depositing, stop up the problem of exhaust duct.Nozzle location is located at the flow-disturbing active region, can allow urea and tail gas mix fully, reduces deposition.
Described body 2 adopts 304 above stainless steel materials making, avoids under the high temperature mixer to avoiding the corrosive action of material.
Above-mentionedly in conjunction with the accompanying drawings the utility model has been carried out exemplary description, but specific implementation of the present utility model is not subjected to the restriction of aforesaid way.As long as adopted the improvement of the various unsubstantialities that design of the present utility model and technological scheme carry out, or design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model without improving.
Adopt the technical solution of the utility model, not only can not produce very big pressure drop again so that the urea water of nozzle ejection and tail gas are mixed fully.
Claims (10)
1. automobile exhaust pipeline static mixer, comprise body (2), fin (3) and nozzle (4), it is characterized in that described nozzle (4) is arranged on the body (2), described fin (3) comprises long fin (32) and short limb sheet (31), each fin cross section is " V " font, and a plurality of fins (3) radially are arranged in the body (2) by the mode that long fin (32) and short limb sheet (31) replace.
2. as right 1 described automobile exhaust pipeline static mixer, it is characterized in that described body (2) two ends link to each other with rear end pipeline (5) or catalyst converter (6) with exhaust duct by adpting flange (1,9) respectively.
3. as right 1 described automobile exhaust pipeline static mixer, it is characterized in that described nozzle (4) is arranged on the downstream of body (3).
4. as right 1 described automobile exhaust pipeline static mixer, it is characterized in that described fin (3) is bent into several angle by steel plate and makes, be fixed by welding on the body (2) that the other end is unsettled.
5. as right 4 described automobile exhaust pipeline static mixers, " V " shape angle that it is characterized in that described fin (3) is 30 degree-70 degree.
6. as right 5 described automobile exhaust pipeline static mixers, " V " shape angle that it is characterized in that described fin (3) is 30 degree-45 degree.
7. as right 6 described automobile exhaust pipeline static mixers, " V " shape angle that it is characterized in that described fin (3) is 30 degree or 45 degree.
8. as right 4 described automobile exhaust pipeline static mixers, it is characterized in that described fin (3) is the 6-10 sheet.
9. as right 8 described automobile exhaust pipeline static mixers, it is characterized in that described fin (3) is 8.
10. as any one described automobile exhaust pipeline static mixer of right 1-9, it is characterized in that described body (2) adopts 304 above stainless steel materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201987145U CN201687556U (en) | 2010-05-10 | 2010-05-10 | Automobile exhaust pipeline static mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201987145U CN201687556U (en) | 2010-05-10 | 2010-05-10 | Automobile exhaust pipeline static mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687556U true CN201687556U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201987145U Expired - Lifetime CN201687556U (en) | 2010-05-10 | 2010-05-10 | Automobile exhaust pipeline static mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687556U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242660A (en) * | 2010-05-10 | 2011-11-16 | 杭州银轮科技有限公司 | Static mixer for automobile exhaust duct |
| CN102444451A (en) * | 2011-12-14 | 2012-05-09 | 杭州银轮科技有限公司 | Static mixer for after-treatment system of diesel engine |
| WO2017133631A1 (en) * | 2016-02-03 | 2017-08-10 | 天纳克（苏州）排放系统有限公司 | Mixing cavity assembly |
| US11560831B2 (en) | 2018-02-28 | 2023-01-24 | Tenneco Gmbh | Low-pressure EGR system with turbo bypass |
-
2010
- 2010-05-10 CN CN2010201987145U patent/CN201687556U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242660A (en) * | 2010-05-10 | 2011-11-16 | 杭州银轮科技有限公司 | Static mixer for automobile exhaust duct |
| CN102242660B (en) * | 2010-05-10 | 2013-02-13 | 杭州银轮科技有限公司 | Static mixer for automobile exhaust duct |
| CN102444451A (en) * | 2011-12-14 | 2012-05-09 | 杭州银轮科技有限公司 | Static mixer for after-treatment system of diesel engine |
| WO2017133631A1 (en) * | 2016-02-03 | 2017-08-10 | 天纳克（苏州）排放系统有限公司 | Mixing cavity assembly |
| CN107035480B (en) * | 2016-02-03 | 2019-08-09 | 天纳克（苏州）排放系统有限公司 | Mixing chamber component |
| US11560831B2 (en) | 2018-02-28 | 2023-01-24 | Tenneco Gmbh | Low-pressure EGR system with turbo bypass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101229 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |