CN206267925U - Exhaust gas post-treatment device - Google Patents
Exhaust gas post-treatment device Download PDFInfo
- Publication number
- CN206267925U CN206267925U CN201621279927.4U CN201621279927U CN206267925U CN 206267925 U CN206267925 U CN 206267925U CN 201621279927 U CN201621279927 U CN 201621279927U CN 206267925 U CN206267925 U CN 206267925U
- Authority
- CN
- China
- Prior art keywords
- plate
- housing
- exhaust gas
- treatment device
- gas post
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of exhaust gas post-treatment device, it includes housing, mixing chamber and mixing arrangement, wherein the housing is provided with inlet tube, outlet and is used to install the first side of urea nozzle.The mixing chamber includes side plate and dividing plate, and the mixing chamber is divided into the first cavity and the second cavity by the dividing plate；The mixing arrangement includes the distribution plate just to the inlet tube, the cyclone pipe positioned at the distribution plate downstream and just to the kuppe of the cyclone pipe；The distribution plate is in arc-shaped, which is provided with some dispensing orifices；The cyclone pipe is provided with some spinning disks in first cavity, and the water conservancy diversion is covered with towards the opening of the cyclone pipe and is used to the inner surface of the arc-shaped for changing air current flow direction.Be arranged such, increased Urea Evaporation away from discrete time, improve the uniformity of air-flow mixing.
Description
Technical field
The utility model is related to a kind of exhaust gas post-treatment device, belongs to engine exhaust post-processing technology field.
Background technology
Research shows ammonia distribution in exhaust after treatment system (such as selective catalytic reduction system operating, SCR system) pipeline
Uniformity coefficient has important influence to the overall performance and endurance quality of system.If ammonia skewness can cause regional area
Ammonia is excessive so as to easily cause NH_3 leakage, and causes oxynitrides (NOx) transformation efficiency too low in other ammonia thin areas.It is long
The uneven distribution of time ammonia can cause catalyst aging uneven, so as to influence the overall performance of catalyst.In addition, urea solution
The uneven distribution of drop can cause local tube wall or mixed structure temperature too low, form crystallization, blast pipe can be blocked when serious, is led
Engine power performance is caused to decline.
Therefore, it is necessary to a kind of new exhaust gas post-treatment device is provided, to solve above-mentioned technical problem.
Utility model content
The purpose of this utility model is to provide a kind of well mixed exhaust gas post-treatment device.
To achieve the above object, the utility model is adopted the following technical scheme that：A kind of exhaust gas post-treatment device, it includes shell
Body, the mixing chamber in the housing and the mixing arrangement being at least partially disposed in the mixing chamber, wherein described
Housing is provided with inlet tube, outlet and is used to install the first side of urea nozzle, and the mixing chamber includes and described the
The relative side plate of one side and the dividing plate between the first side and the side plate, the dividing plate is by the hybrid chamber
Body is divided into the first cavity and the second cavity；The mixing arrangement includes being located in first cavity and just to the inlet tube
Distribution plate, the cyclone pipe in first cavity and positioned at the distribution plate downstream and be fixed on the side plate and
Just to the kuppe of the cyclone pipe；The distribution plate is in arc-shaped, which is provided with some dispensing orifices；The urea nozzle is used to
To the urea droplets of jet atomization in the cyclone pipe, the cyclone pipe is provided with some eddy flows in first cavity
Piece, the cyclone pipe is erected on the first side and the dividing plate and through the dividing plate to extend into second cavity
Interior, the water conservancy diversion is covered with the interior table towards the opening of the cyclone pipe and the arc-shaped for being used to change air current flow direction
Face.
Used as the further improved technical scheme of the utility model, the mixing chamber is additionally provided with top board and base plate, wherein
The dividing plate and the side plate are welded on the top board and the base plate, and the distribution plate is in the shape of protuberance and weldering upwards
It is connected on the base plate.
Used as the further improved technical scheme of the utility model, the left and right sides of the distribution plate is respectively welded at described
In first side and the dividing plate.
As the further improved technical scheme of the utility model, the length of the length more than the top board of the base plate.
As the further improved technical scheme of the utility model, the kuppe and the cyclone pipe be spaced it is certain away from
From the kuppe protrudes the side plate backward.
Used as the further improved technical scheme of the utility model, the side plate is provided with exhaust and urea solution for engine
Some perforates that the mixture of drop is passed through.
Used as the further improved technical scheme of the utility model, the dividing plate is non-porous separator plate.
Used as the further improved technical scheme of the utility model, the inlet tube is located at the bottom of the housing, described
Outlet is located at the top of the housing；The exhaust gas post-treatment device is additionally provided with selective catalysis in the housing also
Former agent, wherein the selective catalytic reducing agent is located at the downstream of the side plate.
Used as the further improved technical scheme of the utility model, the housing includes two the first housings for taking the shape of the letter U
With the second housing, wherein the first shell body welds together with second housing.
Compared to prior art, the utility model increased urea steaming by setting distribution plate, cyclone pipe and kuppe
Hair away from discrete time, improve the uniformity of air-flow mixing.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the utility model exhaust gas post-treatment device.
Fig. 2 is the schematic perspective view of another angles of Fig. 1.
Fig. 3 is the three-dimensional exploded view of Fig. 1.
Fig. 4 is the three-dimensional exploded view of another angles of Fig. 3.
Fig. 5 is the three-dimensional exploded view of top board, base plate, dividing plate, distribution plate and cyclone pipe etc. in Fig. 4.
Fig. 6 is the three-dimensional exploded view of the second housing, side plate and kuppe in Fig. 4.
Fig. 7 is the profile of the line A-A along Fig. 1.
Specific embodiment
Please join shown in Fig. 1 to Fig. 7, the utility model discloses a kind of exhaust gas post-treatment device 100, be used to process engine
The exhaust of (such as high-power engine).On the whole, the exhaust gas post-treatment device 100 is including housing 1, positioned at the housing 1
Interior mixing chamber 2 and the mixing arrangement 3 being at least partially disposed in the mixing chamber 2 and positioned at the mixing arrangement 3
Downstream selective catalytic reducing agent 4.
The housing 1 is provided with inlet tube 11 and outlet 12.In the utility model embodiment illustrated, it is described enter
Mouth pipe 11 is located at the bottom of the housing 1, and the outlet 12 is located at the top of the housing 1.The housing 1 includes two
The first housing 13 and the second housing 14 for taking the shape of the letter U, wherein the first shell body 13 welds together with second housing 14.
In the utility model embodiment illustrated, the housing 14 of first housing 13 and second is double-decker.The first shell
Body 13 is provided with to install the first side 131 of urea nozzle (not shown).
The mixing chamber 2 is including top board 21, base plate 22 side plate 23 relative with the first side 131, positioned at described
Dividing plate 24 between first side 131 and the side plate 23.Wherein described dividing plate 24 is welded on the top with the side plate 23
On plate 21 and the base plate 22.Please join shown in Fig. 7, the mixing chamber is divided into the first cavity 25 and second by the dividing plate 24
Cavity 26.Length of the length of the base plate 22 more than the top board 21.
The mixing arrangement 3 includes being located in first cavity 25 and just to the distribution plate 31, position of the inlet tube 11
Cyclone pipe 32 in first cavity 25 and positioned at the downstream of the distribution plate 31 and it is fixed on the side plate 23 and just
To the kuppe 33 of the cyclone pipe 32.The distribution plate 31 is in arc-shaped, which is provided with some dispensing orifices 311.The distribution
Plate 31 is in the shape of protuberance upwards and is welded on the base plate 22.In the utility model embodiment illustrated, described point
The left and right sides of matching board 31 is respectively welded on the first side 131 and the dividing plate 24.The dividing plate 24 for it is non-porous every
Plate, i.e., described dividing plate 24 is not provided with any hole of connection first cavity 25 and second cavity 26.
The urea nozzle is to the urea droplets of jet atomization in the cyclone pipe 32, the cyclone pipe 32 is provided with position
Some spinning disks 321 in first cavity 25 so that the exhaust of engine can in a spiral manner enter the eddy flow
In pipe 32.The cyclone pipe 32 is erected on the first side 131 and the dividing plate 24 and through the dividing plate 24 to extend
Enter in second cavity 26.The kuppe 33 is provided with towards the opening 331 of the cyclone pipe 32 and is used to change air-flow
The inner surface 332 of the arc-shaped of flow direction.The kuppe 33 is spaced a distance with the cyclone pipe 32, the water conservancy diversion
Cover 33 protrudes the side plate 23 backward.If the side plate 23 is provided with what is passed through for the exhaust of engine and the mixture of urea droplets
Dry perforate 231.The kuppe 33 is also double-decker in the utility model embodiment illustrated.
The selective catalytic reducing agent 4 is two groups in the utility model embodiment illustrated, and positioned at the side
The downstream of plate 23.
When using, the exhaust of engine enters inlet tube 11, and to entering the first cavity 25 in the presence of distribution plate 31
Exhaust be allocated；Then, exhaust forms spiral helicine air-flow under the guiding of spinning disk 321, and enters the cyclone pipe
32；When injection conditions is reached, urea liquid from urea nozzle to jet atomization in the cyclone pipe 32, urea droplets are in spiral
Mixed with exhaust in the presence of shape air-flow.Entered into the second cavity 26 from the air-flow out of cyclone pipe 32, wherein one
Dividing exhaust can rush at kuppe 33 with the mixture of urea droplets, then be carried out in the presence of inner surface 332 reversely；Then,
Exhaust passes through the perforate 231 with the mixture of urea droplets, and after by selective catalytic reducing agent 4, finally from going out
Mouth pipe 12 leaves.Mixing chamber of the present utility model 2 and mixing arrangement 3, on the one hand increased Urea Evaporation distance and when
Between, improve the uniformity of air-flow mixing；On the other hand the risk that crystallization is produced because urea liquid is contacted with tube wall is reduced.
In addition, above example is merely to illustrate the utility model and not limits the technical side described by the utility model
Case, understanding of this description should be based on person of ordinary skill in the field, although this specification is with reference to above-mentioned
Embodiment has been carried out detailed description to the utility model, but, it will be understood by those within the art that, affiliated skill
The technical staff in art field still can modify or equivalent to the utility model, and all do not depart from this practicality newly
The technical scheme of the spirit and scope of type and its improvement, all should cover in right of the present utility model.
Claims (9)
1. a kind of exhaust gas post-treatment device, it includes housing, the mixing chamber in the housing and is at least partially disposed at
Mixing arrangement in the mixing chamber, wherein the housing is provided with inlet tube, outlet and is used to install urea nozzle
First side, it is characterised in that：The mixing chamber includes the side plate relative with the first side and positioned at described first
The mixing chamber is divided into the first cavity and the second cavity by the dividing plate between side and the side plate, the dividing plate；It is described
Mixing arrangement includes being located in first cavity and the distribution plate just to the inlet tube, in first cavity and position
In the distribution plate downstream cyclone pipe and be fixed on the side plate and just to the kuppe of the cyclone pipe；The distribution
Plate is in arc-shaped, which is provided with some dispensing orifices；The urea nozzle is to the urea solution of jet atomization in the cyclone pipe
Drop, the cyclone pipe is provided with some spinning disks in first cavity, and the cyclone pipe is erected at the first side
With, to extend into second cavity, the water conservancy diversion is covered with towards the cyclone pipe on the dividing plate and through the dividing plate
Opening and be used to the inner surface of the arc-shaped for changing air current flow direction.
2. exhaust gas post-treatment device as claimed in claim 1, it is characterised in that：The mixing chamber is additionally provided with top board and bottom
Plate, wherein the dividing plate and the side plate are welded on the top board and the base plate, the distribution plate is in protuberance upwards
Shape and it is welded on the base plate.
3. exhaust gas post-treatment device as claimed in claim 2, it is characterised in that：The left and right sides of the distribution plate is respectively welded
In the first side and the dividing plate.
4. exhaust gas post-treatment device as claimed in claim 2, it is characterised in that：The length of the base plate is more than the top board
Length.
5. exhaust gas post-treatment device as claimed in claim 1, it is characterised in that：The kuppe and cyclone pipe interval one
Fixed distance, the kuppe protrudes the side plate backward.
6. exhaust gas post-treatment device as claimed in claim 1, it is characterised in that：The side plate be provided with exhaust for engine with
Some perforates that the mixture of urea droplets is passed through.
7. exhaust gas post-treatment device as claimed in claim 1, it is characterised in that：The dividing plate is non-porous separator plate.
8. exhaust gas post-treatment device as claimed in claim 1, it is characterised in that：The inlet tube is located at the bottom of the housing
End, the outlet is located at the top of the housing；The exhaust gas post-treatment device is additionally provided with the selection in the housing
Property catalytic reducer, wherein the selective catalytic reducing agent be located at the side plate downstream.
9. exhaust gas post-treatment device as claimed in claim 8, it is characterised in that：The housing includes two for taking the shape of the letter U
One housing and the second housing, wherein the first shell body welds together with second housing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279927.4U CN206267925U (en) | 2016-11-25 | 2016-11-25 | Exhaust gas post-treatment device |
| PCT/CN2017/104328 WO2018095141A1 (en) | 2016-11-25 | 2017-09-29 | Exhaust aftertreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621279927.4U CN206267925U (en) | 2016-11-25 | 2016-11-25 | Exhaust gas post-treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206267925U true CN206267925U (en) | 2017-06-20 |
Family
ID=59042908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621279927.4U Active CN206267925U (en) | 2016-11-25 | 2016-11-25 | Exhaust gas post-treatment device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206267925U (en) |
| WO (1) | WO2018095141A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018095141A1 (en) * | 2016-11-25 | 2018-05-31 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment device |
| CN108979805A (en) * | 2018-09-07 | 2018-12-11 | 安徽艾可蓝环保股份有限公司 | A kind of Novel SCR system mixing disturbing flow device meeting six discharge standard of state |
| CN110578581A (en) * | 2019-09-30 | 2019-12-17 | 潍柴动力股份有限公司 | SCR aftertreatment device and air inlet mixing device thereof |
| CN111033006A (en) * | 2017-08-30 | 2020-04-17 | 佛吉亚排放控制技术美国有限公司 | Venturi type ejector cone |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439658A (en) * | 2019-08-12 | 2019-11-12 | 郑州精益达环保科技有限公司 | A kind of six front end SCR urea mixed structure of state |
| CN111878197B (en) * | 2020-03-05 | 2022-06-10 | 广西玉柴机器股份有限公司 | Efficient SCR mixer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5555996B2 (en) * | 2008-09-18 | 2014-07-23 | いすゞ自動車株式会社 | Exhaust gas purification device and exhaust gas purification method |
| DE102015002974A1 (en) * | 2015-03-10 | 2016-09-15 | Man Truck & Bus Ag | Device for the aftertreatment of exhaust gas of a motor vehicle |
| CN105134349B (en) * | 2015-08-21 | 2017-08-29 | 天纳克（苏州）排放系统有限公司 | exhaust gas treatment device |
| CN205605279U (en) * | 2016-04-12 | 2016-09-28 | 天纳克（苏州）排放系统有限公司 | Hybrid module |
| CN206267925U (en) * | 2016-11-25 | 2017-06-20 | 天纳克（苏州）排放系统有限公司 | Exhaust gas post-treatment device |
-
2016
- 2016-11-25 CN CN201621279927.4U patent/CN206267925U/en active Active
-
2017
- 2017-09-29 WO PCT/CN2017/104328 patent/WO2018095141A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018095141A1 (en) * | 2016-11-25 | 2018-05-31 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment device |
| CN111033006A (en) * | 2017-08-30 | 2020-04-17 | 佛吉亚排放控制技术美国有限公司 | Venturi type ejector cone |
| US11105241B2 (en) | 2017-08-30 | 2021-08-31 | Faurecia Emissions Control Technologies, Usa, Llc | Venturi style injector cone |
| CN108979805A (en) * | 2018-09-07 | 2018-12-11 | 安徽艾可蓝环保股份有限公司 | A kind of Novel SCR system mixing disturbing flow device meeting six discharge standard of state |
| CN108979805B (en) * | 2018-09-07 | 2023-08-29 | 安徽艾可蓝环保股份有限公司 | Novel SCR system mixed turbulent flow device meeting national six-emission standard |
| CN110578581A (en) * | 2019-09-30 | 2019-12-17 | 潍柴动力股份有限公司 | SCR aftertreatment device and air inlet mixing device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018095141A1 (en) | 2018-05-31 |
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