CN105089750B - exhaust gas treatment device - Google Patents
exhaust gas treatment device Download PDFInfo
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- CN105089750B CN105089750B CN201510519041.6A CN201510519041A CN105089750B CN 105089750 B CN105089750 B CN 105089750B CN 201510519041 A CN201510519041 A CN 201510519041A CN 105089750 B CN105089750 B CN 105089750B
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- mixing tube
- gas treatment
- partition
- exhaust gas
- treatment device
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Abstract
A kind of exhaust gas treatment device, it includes housing, some dividing plates, the mixing arrangement in the housing and vent gas treatment module.The housing includes the first cavity, the second cavity and the 3rd cavity.The mixing arrangement includes mixing tube and is socketed in the kuppe of the mixing tube periphery, one end of wherein described mixing tube includes in first cavity and circumferentially distributed some fins, can form eddy flow when exhaust enters the mixing tube along the fin.The kuppe is socketed in the other end of the mixing tube, the mixing tube is at least partially inserted into the kuppe, the kuppe includes the opening portion that is connected with second cavity, and the opening direction of the opening portion is opposite with the opening direction of the other end of the mixing tube to change the flow direction of air-flow.Be arranged such, add Urea Evaporation away from discrete time, improve the uniformity of air-flow mixing.
Description
Technical field
The present invention relates to a kind of exhaust gas treatment device, belongs to engine exhaust post-processing technology field.
Background technology
Research shows exhaust after treatment system（Such as selective catalytic reduction system operating, SCR system）Ammonia is distributed in pipeline
Uniformity coefficient has important influence to the overall performance and endurance quality of system.If ammonia skewness can cause regional area
Ammonia causes oxynitrides excessively so as to easily cause NH_3 leakage in other ammonia thin areas（NOx）Transformation efficiency is too low.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 treatment device is provided, to solve above-mentioned technical problem.
The content of the invention
It is an object of the invention to provide a kind of well mixed exhaust gas treatment device.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of exhaust gas treatment device, it includes housing, peace
Loaded on some dividing plates in the housing, in the housing and by the mixing arrangement of the membrane support and positioned at institute
State the vent gas treatment module in mixing arrangement downstream, wherein some dividing plates include spaced first partition with second every
Plate, the housing include the first cavity positioned at the first partition upstream, positioned at the first partition and the second partition
Between the second cavity and the 3rd cavity positioned at the second partition downstream, the second partition include connecting described the
At least one through hole of two cavitys and the 3rd cavity, the mixing arrangement include mixing tube and are socketed in the mixing tube
The kuppe of periphery, wherein one end of the mixing tube includes in first cavity and circumferentially distributed some wings
Piece, eddy flow can be formed when exhaust enters the mixing tube along the fin；The kuppe is socketed in the mixing
The other end of pipe, the mixing tube are at least partially inserted into the kuppe, and the kuppe includes connecting with second cavity
Logical opening portion, the opening direction of the opening portion are opposite with the opening direction of the other end of the mixing tube to change gas
The flow direction of stream.
As further improved technical scheme of the present invention, the first partition is provided with first passed through for the mixing tube
Perforate, the second partition are provided with the second perforate passed through for the kuppe, and the through hole is located at the outer of second perforate
Portion.
As further improved technical scheme of the present invention, the housing is provided with the end plate parallel to the first partition,
The exhaust gas treatment device is included to the urea nozzle on the end plate, the urea liquid after atomization to be sprayed
Enter in the mixing tube.
As further improved technical scheme of the present invention, length direction extension of the fin along the mixing tube, institute
Stating mixing tube also includes on the length direction closer to the through hole of the end plate, circumference of the through hole along the mixing tube
Distribution, enter to supply and discharge gas in the mixing tube.
As further improved technical scheme of the present invention, the kuppe is in bowl-shape, and it includes protruding out the described 3rd
Bottom in cavity.
As further improved technical scheme of the present invention, the bottom is in arc-shaped, and the mixing tube is square along its length
To extending beyond the second partition.
As further improved technical scheme of the present invention, the exhaust gas treatment device also includes being located at the 3rd cavity
It is interior and to support the supporting plate of the kuppe upwards.
As further improved technical scheme of the present invention, the supporting plate is parallel to the second partition and positioned at described
The downstream of second partition, the supporting plate are provided with some perforation.
As further improved technical scheme of the present invention, the exhaust gas treatment device includes being arranged in the kuppe
And to support the support frame of the mixing tube, support frame as described above is provided with the positioning hole passed through for the mixing tube and positioned at institute
State the airflow hole that positioning hole periphery passes through for revolution air-flow.
As further improved technical scheme of the present invention, the vent gas treatment module includes SCR mould
Block, the exhaust gas treatment device also include the oxidation catalyzer installed in the housing upstream.
Compared to prior art, the present invention is socketed in the kuppe of mixing tube periphery by setting, changes the flowing of air-flow
Direction, add Urea Evaporation away from discrete time, improve the uniformity of air-flow mixing.
Brief description of the drawings
Fig. 1 is the schematic perspective view of exhaust gas treatment device of the present invention.
Fig. 2 is Fig. 1 perspective view.
Fig. 3 is Fig. 1 part isometric exploded view.
Fig. 4 is the three-dimensional exploded view of first reactor in Fig. 1.
Fig. 5 is the part isometric exploded view of mixing arrangement in Fig. 1.
Fig. 6 is the further three-dimensional exploded views of Fig. 5.
Fig. 7 is the side view of mixing tube in Fig. 6.
Fig. 8 is the front view of mixing tube in Fig. 6, and designates eddy flow direction.
Fig. 9 is the diagrammatic cross-section of a certain angle of exhaust gas treatment device of the present invention.
Embodiment
It please join shown in Fig. 1 to Fig. 9, present invention is disclosed a kind of exhaust gas treatment device 100, to handle engine（Especially
It is high-power engine）Exhaust.On the whole, the exhaust gas treatment device 100 include first reactor 1, mixed structure 2 and
Second reactor 3.In illustrative embodiments of the present invention, on the flow direction of exhaust, the first reactor 1 is located at institute
State the upstream of second reactor 3.Functionally, the first reactor 1 is oxidation catalyzer（DOC）.The second reactor 3
Including vent gas treatment module 31, the vent gas treatment module 31 is SCR in illustrative embodiments of the present invention
Module（SCR）.Certainly, person of ordinary skill in the field is appreciated that the exhaust gas treatment device 100 of the present invention can also wrap
Include the 3rd reactor, such as NH_3 leakage photocatalyst module（ASC）.Above-mentioned various reactors can be designed as it according to being actually needed
The catalyst converter of his type or combination, will not be repeated here.
It please join shown in Fig. 1 to Fig. 4, the first reactor 1 includes housing 11, the air inlet pipe positioned at described one end of housing 11
12nd, urged positioned at the escape pipe 13 of the other end of housing 11 and the oxidation that is erected at by some dividing plates 14 in the housing 11
Change device module 15.
In illustrative embodiments of the present invention, the escape pipe 13 of the first reactor 1 is mixed by bolt 16 with described
Close structure 2 and realize connection.
The mixed structure 2 includes housing 21, some dividing plates 22 being installed in the housing 21 and positioned at the shell
The mixing arrangement 4 supported in body 21 and by the dividing plate 22.The vent gas treatment module 31 is similarly positioned in the housing 21, and
Positioned at the downstream of the mixing arrangement 4.
The mixing arrangement 4 includes mixing tube 41 and is socketed in the kuppe 42 of the periphery of mixing tube 41.
It please join shown in Fig. 9, the housing 21 is provided with end plate 210.Some dividing plates 22 include spaced first every
Plate 221 and second partition 222.The housing 21 includes the first cavity 211 positioned at the upstream of first partition 221, positioned at institute
State the second cavity 212 between first partition 221 and the second partition 222 and positioned at the downstream of second partition 222
3rd cavity 213.The end plate 210 includes to install parallel to the first partition 221, the exhaust gas treatment device 100
Urea nozzle 23 on the end plate 210, the urea liquid after atomization is sprayed into the mixing tube 41.
One end of the mixing tube 41（It is left end in the embodiment shown in Fig. 9）Including positioned at first cavity
In 211 and circumferentially distributed some fins 411, to can when exhaust enters the mixing tube 41 along the fin 411
Form eddy flow.Length direction extension of the fin 411 along the mixing tube 41.The mixing tube 41 is additionally included in the length
Closer to the through hole 412 of the end plate 210 on direction, the through hole 412 is circumferentially distributed along the mixing tube 41, to supply and discharge
Gas enters in the mixing tube 41, increases the trend in the air-flow flow forward at the urea nozzle 23.
The kuppe 42 is socketed in the other end of the mixing tube 41（It is right-hand member in the embodiment shown in Fig. 9）.
The mixing tube 41 extends beyond the second partition 222 along its length.The mixing tube 41 is at least partially inserted into described
In kuppe 42.In illustrative embodiments of the present invention, the kuppe 42 is in bowl-shape, and it is included towards second cavity
212 and the opening portion 421 that is connected with second cavity 212, and protrude out the bottom 422 in the 3rd cavity 213.Institute
The opening direction of the opening direction of opening portion 421 and the other end of the mixing tube 41 is stated on the contrary, to change the stream of air-flow
Dynamic direction.The bottom 422 is in arc-shaped, with more preferable reflected gas stream.
The exhaust gas treatment device 100 also includes in the 3rd cavity 213 and to support the water conservancy diversion upwards
The supporting plate 223 of cover 42.The supporting plate 223 is parallel to the second partition 222 and under the second partition 222
Trip, the supporting plate 223 be provided with it is some supply stream through perforation 224.
It please join shown in Fig. 5, Fig. 6 and Fig. 9, the exhaust gas treatment device 100 includes being arranged in the kuppe 42 and used
To support the support frame 43 of the mixing tube 41.Support frame as described above 43 be provided with the positioning hole 431 that passes through for the mixing tube 41 with
And the airflow hole 432 passed through positioned at the periphery of positioning hole 431 for revolution air-flow.
The first partition 221 is provided with the first perforate 2211 passed through for the mixing tube 41.The second partition 222 is set
There is the second perforate 2221 passed through for the kuppe 42.The second partition 222 includes connecting second cavity 212 and institute
Some through holes 2222 of the 3rd cavity 213 are stated, the through hole 2222 is located at the outside of second perforate 2221.
In use, the exhaust of engine enters the housing after the first reactor 1 processing, from the escape pipe 13
21.First, after exhaust enters the first cavity 211, it is vented through the fin 411 and through hole 412, and in the wing
Spiral helicine air-flow is formed in the presence of piece 411, subsequently into the mixing tube 41.
Secondly, urea liquid positioned at the urea nozzle 23 of end by being atomised in the mixing tube 41.Rotation
Air-flow urea droplets are surrounded, be distributed in urea droplets are more uniform under the influence of centrifugal force on tube wall, to increase urine
Plain disengagement area, improve evaporation rate.
Air-flow moves in the mixing tube 41 to opposite side, into the kuppe 42, and by the kuppe
42 change the flow direction of air-flow, allow airflow into second cavity 212.Then, air-flow is passed through on second partition 222
Through hole 2222 enter the 3rd cavity 213, and flowed out after being handled through the second reactor 3.It is socketed in by setting mixed
Close the kuppe 42 of the periphery of pipe 41, change the flow direction of air-flow, add Urea Evaporation away from discrete time, improve air-flow
The uniformity of mixing.
In addition, above example is merely to illustrate the present invention and not limits technical scheme described in the invention, to this
The understanding of specification should be based on person of ordinary skill in the field, although this specification is with reference to the above embodiments pair
Present invention has been detailed description, still, it will be understood by those within the art that, the technology of art
Still the present invention can be modified by personnel or equivalent substitution, and all do not depart from the technology of the spirit and scope of the present invention
Scheme and its improvement, it all should cover in scope of the presently claimed invention.
Claims (10)
1. a kind of exhaust gas treatment device, it includes housing, some dividing plates being installed in the housing, in the housing and
By the mixing arrangement of the membrane support and the vent gas treatment module positioned at the mixing arrangement downstream, wherein described some
Dividing plate includes spaced first partition and second partition, and the housing includes the first chamber positioned at the first partition upstream
Body, the second cavity between the first partition and the second partition and positioned at the second partition downstream
Three cavitys, the second partition include at least one through hole for connecting second cavity and the 3rd cavity, and its feature exists
In：The mixing arrangement includes mixing tube and the kuppe being engaged with the mixing tube, wherein one end of the mixing tube
Including in first cavity and circumferentially distributed some fins, to enter the mixing along the fin when exhaust
Eddy flow can be formed during pipe；The mixing tube with urea nozzle to be engaged, and the urea nozzle is to by after atomization
Urea liquid is injected directly into the mixing tube；The kuppe is in bowl-shape and is engaged with the other end of the mixing tube, institute
The opening portion that kuppe includes connecting with second cavity is stated, the opening direction of the opening portion is described with the mixing tube
The opening direction of the other end is conversely to change the flow direction of air-flow.
2. exhaust gas treatment device as claimed in claim 1, it is characterised in that：The first partition is provided with wears for the mixing tube
The first perforate crossed, the second partition are provided with the second perforate passed through for the kuppe, and the through hole is located at described second
The outside of perforate.
3. exhaust gas treatment device as claimed in claim 1, it is characterised in that：The housing is provided with parallel to the first partition
End plate, the exhaust gas treatment device includes to the urea nozzle on the end plate, to by the urine after atomization
Plain solution is sprayed into the mixing tube.
4. exhaust gas treatment device as claimed in claim 3, it is characterised in that：Length direction of the fin along the mixing tube
Extension, the mixing tube also include on the length direction closer to the through hole of the end plate, and the through hole is along the mixing
Pipe it is circumferentially distributed, to supply and discharge gas enter the mixing tube in.
5. exhaust gas treatment device as claimed in claim 1, it is characterised in that：The kuppe is socketed in the another of the mixing tube
One end, the mixing tube are at least partially inserted into the kuppe, and the kuppe includes protruding out in the 3rd cavity
Bottom.
6. exhaust gas treatment device as claimed in claim 5, it is characterised in that：The bottom is in arc-shaped, the mixing tube edge
Its length direction extends beyond the second partition.
7. exhaust gas treatment device as claimed in claim 6, it is characterised in that：The exhaust gas treatment device is also included positioned at described
In 3rd cavity and to support the supporting plate of the kuppe upwards.
8. exhaust gas treatment device as claimed in claim 7, it is characterised in that：The supporting plate parallel to the second partition and
Positioned at the downstream of the second partition, the supporting plate is provided with some perforation.
9. the exhaust gas treatment device as described in any one in claim 1 to 8, it is characterised in that：The pump-down process dress
Put including in the kuppe and to support the support frame of the mixing tube, support frame as described above, which is provided with, supplies the mixing
Pipe through positioning hole and positioned at the positioning hole periphery for the airflow hole that passes through of revolution air-flow.
10. exhaust gas treatment device as claimed in claim 1, it is characterised in that：The vent gas treatment module includes selective oxygen
Change catalytic module, the exhaust gas treatment device also includes the oxidation catalyzer installed in the housing upstream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519041.6A CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519041.6A CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105089750A CN105089750A (en) | 2015-11-25 |
| CN105089750B true CN105089750B (en) | 2018-04-06 |
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ID=54570963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510519041.6A Active CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105089750B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204877615U (en) * | 2015-08-21 | 2015-12-16 | 天纳克（苏州）排放系统有限公司 | Exhaust treatment appts |
| CN106894870B (en) * | 2015-12-18 | 2020-07-03 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment device |
| CN205243598U (en) * | 2015-12-18 | 2016-05-18 | 天纳克（苏州）排放系统有限公司 | Processing apparatus behind engine exhaust |
| US9932875B2 (en) * | 2016-03-02 | 2018-04-03 | Ford Global Technologies, Llc | Mixer for mixing exhaust gas |
| CN108425724B (en) * | 2016-04-11 | 2019-07-23 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN107366566A (en) * | 2016-05-13 | 2017-11-21 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment assembly |
| CN107489501A (en) * | 2016-06-13 | 2017-12-19 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment mixing arrangement |
| WO2017215461A1 (en) * | 2016-06-15 | 2017-12-21 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment apparatus |
| CN205779152U (en) * | 2016-07-04 | 2016-12-07 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN205779177U (en) * | 2016-07-04 | 2016-12-07 | 天纳克（苏州）排放系统有限公司 | Electric hybrid module |
| CN106246303B (en) * | 2016-10-12 | 2019-01-15 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108457726A (en) * | 2017-02-20 | 2018-08-28 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108979801A (en) * | 2017-07-27 | 2018-12-11 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement |
| CN107255043A (en) * | 2017-07-27 | 2017-10-17 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post processing encapsulation and application |
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|---|---|
| CN105089750A (en) | 2015-11-25 |
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