CN207526559U - Tail-gas after treatment apparatus - Google Patents
Tail-gas after treatment apparatus Download PDFInfo
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- CN207526559U CN207526559U CN201721274193.5U CN201721274193U CN207526559U CN 207526559 U CN207526559 U CN 207526559U CN 201721274193 U CN201721274193 U CN 201721274193U CN 207526559 U CN207526559 U CN 207526559U
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- mixing tube
- plate
- tail
- gas
- treatment apparatus
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Abstract
A kind of tail-gas after treatment apparatus, including mixer assembly, the mixer assembly includes housing, the mixing tube in the housing and the peripheral partition board for being fixed on the mixing tube.The housing is separated into the first space and second space by the partition board.The mixing tube includes the first pipe portion being located in first space and the second pipe portion in the second space, wherein first pipe portion is equipped with respectively positioned at least two first openings of its both sides.The mixer assembly further includes blocks the first shield and the second shield in first open front so that the exhaust stream of the overwhelming majority needs to get around first, second shield and can just enter in first opening respectively.The mixer assembly further includes in the mixing tube and along at least two perforated panel that is staggered of axis of the mixing tube.So set, enhancing the broken of urea granules, heat exchange is also strengthened.
Description
Technical field
The utility model is related to a kind of tail-gas after treatment apparatus, belong to motor exhaust post-processing technology field.
Background technology
Research shows that ammonia distribution in exhaust gas aftertreatment 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, which is unevenly distributed, can lead to regional area
Ammonia causes oxynitrides (NOx) transformation efficiency too low excessively so as to easily cause NH_3 leakage 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.Urea droplets
Uneven distribution can cause local tube wall or mixed structure temperature too low, form crystallization, offgas duct can be blocked when serious, causes to send out
Motivation power performance declines.
Utility model content
The purpose of this utility model is to provide a kind of preferable tail-gas after treatment apparatus of mixed effect.
To achieve the above object, the utility model adopts the following technical solution：A kind of tail-gas after treatment apparatus, including
One post processing carrier module, second post-process carrier module and after the described first post processing carrier module and described second
The mixer assembly between carrier module is handled, wherein the mixer assembly includes housing, the mixing in the housing
The partition board of the periphery of the mixing tube is managed and is fixed on, the housing is separated into and is carried with the described first post processing by the partition board
The first space and the second space being connected with the described second post processing carrier module that body component is connected, the partition board packet
It includes described in the first plate positioned at the side of the mixing tube, the second plate of the opposite side positioned at the mixing tube and connection
The third plate of first plate and second plate, the third plate are equipped with the through-hole passed through for the mixing tube；It is described
Mixing tube includes the first pipe portion being located in first space and the second pipe portion in the second space, wherein institute
The first pipe portion is stated to be equipped with respectively positioned at least two first openings of its both sides；The mixer assembly further includes to be blocked respectively
The first shield and the second shield of the front end of first opening so that most exhaust streams needs to get around described the
First, the second shield can be just entered in first opening；The mixer assembly further includes in the mixing tube and edge
At least two perforated panels that the axis of the mixing tube is staggered.
As the further improved technical solution of the utility model, after the first post processing carrier module, described second
Handle carrier module and mixer assembly arrangement point-blank.
As the further improved technical solution of the utility model, the housing is equipped with first axle, and the mixing tube is set
There is second axis, the first axle is perpendicular to the second axis.
As the further improved technical solution of the utility model, the mixing tube is arranged vertically；First plate with
Second plate extends vertically and extending direction is on the contrary, the third plate is horizontal-extending.
As the further improved technical solution of the utility model, the partition board is substantially Z-shape, and first plate is located at
The lower left of the mixing tube, second plate are located at the upper right side of the mixing tube.
As the further improved technical solution of the utility model, first plate is equipped with and sticks on second pipe portion
On arcwall face.
As the further improved technical solution of the utility model, first shield is provided separately with second shield
And it is welded in first pipe portion.
As the further improved technical solution of the utility model, the tail-gas after treatment apparatus includes being located at the mixing
The plate of the bottom of pipe, the plate are equipped with the arc-shaped convex protruded out into second pipe portion.
As the further improved technical solution of the utility model, at least two perforated panel include the first perforated panel,
Second perforated panel and two third perforated panels, wherein the two third perforated panel flush arrangements, first perforated panel, second
The axis interlaced arrangement of perforated panel and the two third perforated panels along the mixing tube.
As the further improved technical solution of the utility model, first perforated panel is equipped with and is fixed on the mixing tube
In the first fixed jaw, second perforated panel, which is equipped with, is fixed on the second fixed jaw in the mixing tube, each third is opened
Orifice plate is equipped with the third fixed jaw being fixed in the mixing tube.
Compared to the prior art, the utility model improves air flow method by the way that first, second shield is set to carry out rectification
Uniformity, improve mixed effect.In addition, by setting at least two perforated panels being staggered along the axis of mixing tube,
The broken of urea granules is enhanced, heat exchange is also strengthened, reduces the risk of urea crystals.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the utility model tail-gas after treatment apparatus.
Fig. 2 is the part isometric exploded view of Fig. 1.
Fig. 3 is the part isometric exploded view of mixer assembly in Fig. 1.
Fig. 4 is the further three-dimensional exploded views of Fig. 3.
Fig. 5 is the front view of mixer assembly in Fig. 2.
Fig. 6 is the left view of mixer assembly in Fig. 2.
Fig. 7 is the right view of mixer assembly in Fig. 2.
Fig. 8 is the vertical view of mixer assembly in Fig. 2.
Fig. 9 is the diagrammatic cross-section of the line A-A along Fig. 8.
Figure 10 is the diagrammatic cross-section of the line B-B along Fig. 8.
Specific embodiment
It please join shown in Fig. 1 to Figure 10, the utility model discloses a kind of tail-gas after treatment apparatus 100, starts to handle
The exhaust of machine.The tail-gas after treatment apparatus 100 include first post processing carrier module 1, second post-process carrier module 2 and
Mixer assembly 3 between the described first post processing carrier module 1 and the second post processing carrier module 2.In this reality
With in novel embodiment illustrated, the first post processing carrier module 1, described second post-process carrier module 2 and institute
Mixer assembly 3 is stated to arrange point-blank.It is described first post processing carrier module 1 include oxidation catalyzer (DOC) 11 with
And the diesel particulate filter (DPF) 12 positioned at 11 downstream of oxidation catalyzer.The second post processing carrier module 2 includes
Selective catalytic reducing agent (SCR) 21.Above-mentioned oxidation catalyzer 11, diesel particulate filter 12 and selective catalytic reducing agent
21 carried out by clip it is detachably connected, in order to repair and replace.
The mixer assembly 3 includes housing 31, the mixing tube 32 in the housing 31, is fixed on the mixing tube
The partition board 33 and the plate 34 positioned at 32 bottom of mixing tube of 32 periphery.It please join shown in Fig. 9, the partition board 33 is by described in
Housing 31 is separated into the first space 331 being connected with the described first post processing carrier module 1 and is post-processed with described second
The second space 332 that carrier module 2 is connected.
The mixing tube 32 includes the first pipe portion 321 being located in first space 331 and positioned at the described second sky
Between the second pipe portion 322 in 332, wherein first pipe portion 321 is equipped with respectively positioned at least two first openings of its both sides
3211, to supply stream into the mixed effect to form eddy flow.
The mixer assembly 3 further include block respectively described first opening 3211 front ends the first shield 381 and
Second shield 382 so that most exhaust streams, which needs to get around first, second shield 381,382, can just enter institute
It states in the first opening 3211.It is reflected so set, avoiding exhaust stream directly into being formed in mixing tube 32 and on tube wall, shadow
Ring the uniformity and stationarity of air-flow mixing.In the utility model embodiment illustrated, first shield 381 with it is described
Second shield 382 is provided separately and is welded in first pipe portion 321.
It please join shown in Fig. 3, in the utility model embodiment illustrated, the housing 31 is cylindrical, is equipped with the
One axis 311；The mixing tube 32 is cylindrical, is equipped with second axis 323, the first axle 311 and second axis
Line 323 intersects.Preferably, the first axle 311 is perpendicular to the second axis 323.Certainly, in other embodiments,
The housing 31 and the mixing tube 32 can also be other shapes, such as ellipse etc..
The partition board 33 includes the first plate 331 positioned at the side of the mixing tube 32, positioned at the mixing tube 32
Second plate 332 of opposite side and the third plate 333 of connection first plate 331 and second plate 332, it is described
Third plate 333 is equipped with the through-hole 334 passed through for the mixing tube 32.It is described in the utility model embodiment illustrated
Mixing tube 32 is arranged vertically；First plate 331 extends vertically with second plate 332 and extending direction is on the contrary, institute
It is horizontal-extending to state third plate 333.It please join shown in Fig. 3 and Fig. 4, the partition board 33 is substantially Z-shape, first plate 331
In the lower left of the mixing tube 32, second plate 332 is located at the upper right side of the mixing tube 32.First plate
331 are equipped with the arcwall face 335 sticked in second pipe portion 322.
The plate 34 is located at the lower end of second pipe portion 322, and the plate 34 is equipped with convex to second pipe portion 322
The arc-shaped convex 341 stretched, to guide flow reversal, forms out cyclonic current.The plate 34 can avoid urea liquid
It is directly injected on exhaust pipe, so as to reduce the risk of urea crystals.
The tail-gas after treatment apparatus 100, which is equipped with, to be located on the housing 31 and to install urea nozzle will be atomized it
Urea liquid afterwards sprays into the nozzle mounting base 310 in the mixing tube 32.
In the utility model embodiment illustrated, first perforated panel 35 be equipped with several first trepannings 351 and
The first fixed jaw 352 being fixed in the mixing tube 32.Second perforated panel 36 is equipped with several second trepannings 361 and admittedly
The second fixed jaw 362 being scheduled in the mixing tube 32.Described two 37 flush arrangements of third perforated panel, each third trepanning
Plate 37 is equipped with several third trepannings 371 and the third fixed jaw 372 being fixed in the mixing tube 32.
By setting first perforated panel 35, the second perforated panel 36 and third perforated panel 37, urea granules are enhanced
It is broken, improve the effect of mixing；In addition, also strengthening heat exchange, the wind that crystallization is formed due to local temperature is too low is reduced
Danger.If the perforated panel of single piece type, in order to realize that preferable urea crushes, need to set the smaller trepanning in aperture, in this way
Necessarily cause back pressure higher；But if in order to reduce back pressure, aperture will certainly be expanded, can not be realized again so good to urea
It is broken.The utility model is by the way that the first perforated panel 35, the second perforated panel 36 and third perforated panel 37 are staggered, at them
Between also form the region that air-flow passes through, so as to reduce back pressure, while do not influence to crush urea granules again, achieve
Unexpected technique effect.
In the utility model embodiment illustrated, when engine exhaust across first post processing carrier module 1 into
When entering into the first space 331, exhaust enters mixing tube 32 around first, second shield 381,382 from the first opening 3211.When
When meeting injection conditions, urea nozzle sprays urea into mixing tube 32, and the urea droplets of atomization are together with the exhaust of engine
Mixing and downward downstream, and reach the second post processing carrier module 2 positioned at downstream.Preferably make under the action of plate 34
Air-flow reversely (such as upstream) flowing to form double-cyclone.So set, by eddy flow increase Urea Evaporation distance and
Time improves the uniformity of air-flow mixing, reduces the risk of urea crystals.
In addition, above example is merely to illustrate the utility model and not limits the described technical side of the utility model
Case, understanding of this description should be based on persons of ordinary skill in the field, although this specification is with reference to above-mentioned
Embodiment has been carried out being described in detail to the utility model, still, it will be understood by those of ordinary skill in the art that, affiliated skill
The technical staff in art field still can be modified or replaced equivalently the utility model, and all do not depart from this practicality newly
The technical solution of the spirit and scope of type and its improvement should all be covered in the right of the utility model.
Claims (10)
1. a kind of tail-gas after treatment apparatus including the first post processing carrier module, the second post processing carrier module and is located at
Mixer assembly between the first post processing carrier module and the second post processing carrier module, wherein the mixer
Component includes housing, the mixing tube in the housing and the peripheral partition board for being fixed on the mixing tube, the partition board
The housing is separated into the first space being connected with the described first post processing carrier module and is post-processed with described second
The second space that carrier module is connected, the partition board include the first plate positioned at the side of the mixing tube, positioned at described
The second plate and connection first plate and the third plate of second plate, the third of the opposite side of mixing tube
Plate is equipped with the through-hole passed through for the mixing tube；The mixing tube include be located at first space in the first pipe portion and
The second pipe portion in the second space, wherein first pipe portion is equipped with is located at at least two first of its both sides respectively
Opening；It is characterized in that：The mixer assembly further include block respectively described first opening front end the first shield with
And second shield so that most exhaust streams, which needs to get around first, second shield, can just enter described first and open
In mouthful；The mixer assembly further include in the mixing tube and along the mixing tube axis be staggered at least two
A perforated panel.
2. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：The first post processing carrier module, described
Second post processing carrier module and mixer assembly arrangement are point-blank.
3. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：The housing is equipped with first axle, described mixed
It closes pipe and is equipped with second axis, the first axle is perpendicular to the second axis.
4. tail-gas after treatment apparatus as claimed in claim 3, it is characterised in that：The mixing tube is arranged vertically；Described first
Plate extends vertically with second plate and extending direction is on the contrary, the third plate is horizontal-extending.
5. tail-gas after treatment apparatus as claimed in claim 4, it is characterised in that：The partition board is substantially Z-shape, first plate
Piece is located at the lower left of the mixing tube, and second plate is located at the upper right side of the mixing tube.
6. tail-gas after treatment apparatus as claimed in claim 5, it is characterised in that：First plate, which is equipped with, sticks on described the
Arcwall face in two pipe portions.
7. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：First shield and second shield point
It opens up and puts and be welded in first pipe portion.
8. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：The tail-gas after treatment apparatus includes being located at institute
The plate of the bottom of mixing tube is stated, the plate is equipped with the arc-shaped convex protruded out into second pipe portion.
9. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：At least two perforated panel is opened including first
Orifice plate, the second perforated panel and two third perforated panels, wherein the two third perforated panel flush arrangements, first trepanning
The axis interlaced arrangement of plate, the second perforated panel and the two third perforated panels along the mixing tube.
10. tail-gas after treatment apparatus as claimed in claim 9, it is characterised in that：First perforated panel is equipped with and is fixed on institute
The first fixed jaw in mixing tube is stated, second perforated panel is equipped with the second fixed jaw being fixed in the mixing tube, each
A third perforated panel is equipped with the third fixed jaw being fixed in the mixing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274193.5U CN207526559U (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274193.5U CN207526559U (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526559U true CN207526559U (en) | 2018-06-22 |
Family
ID=62570159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721274193.5U Active CN207526559U (en) | 2017-09-29 | 2017-09-29 | Tail-gas after treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526559U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268114A (en) * | 2018-11-21 | 2019-01-25 | 苏州国方汽车电子有限公司 | A kind of flow mixer for SCR system exhaust aftertreatment |
| WO2019056823A1 (en) * | 2017-09-19 | 2019-03-28 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment mixing device |
| WO2019140865A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Exhaust gas aftertreatment device |
-
2017
- 2017-09-29 CN CN201721274193.5U patent/CN207526559U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056823A1 (en) * | 2017-09-19 | 2019-03-28 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment mixing device |
| US11208933B2 (en) | 2017-09-19 | 2021-12-28 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas after-treatment mixing device |
| US11486290B2 (en) | 2017-09-19 | 2022-11-01 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas after-treatment mixing device |
| WO2019140865A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Exhaust gas aftertreatment device |
| CN109268114A (en) * | 2018-11-21 | 2019-01-25 | 苏州国方汽车电子有限公司 | A kind of flow mixer for SCR system exhaust aftertreatment |
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