CN207879438U - Tail-gas after treatment apparatus - Google Patents
Tail-gas after treatment apparatus Download PDFInfo
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- CN207879438U CN207879438U CN201820096771.9U CN201820096771U CN207879438U CN 207879438 U CN207879438 U CN 207879438U CN 201820096771 U CN201820096771 U CN 201820096771U CN 207879438 U CN207879438 U CN 207879438U
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- tail
- gas
- treatment apparatus
- post
- carrier module
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Abstract
A kind of tail-gas after treatment apparatus, it includes the first post-processing carrier module, second post-processing carrier module and mixer assembly, the wherein described mixer assembly includes shell, mixing tube in the shell and partition board, the shell is divided 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 described first pipe portion is equipped at least two first openings for being located at its both sides, the tail-gas after treatment apparatus further includes the first shield portion and the second shield portion blocked respectively in the front end of first opening.So set, the utility model carries out rectification by the way that the first, second shield portion is arranged, the uniformity of air flow method is improved, mixed effect is improved.
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 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, 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 comprising the
One post-processing carrier module, second post-process carrier module and after described first post-processes carrier module and described second
The mixer assembly between carrier module is handled, wherein the mixer assembly includes shell, the mixing in the shell
The partition board of the periphery of the mixing tube is managed and is fixed on, the shell is divided into and the first post-processing carrier by the partition board
The first space and the second space being connected with the second post-processing carrier module that component is connected, the mixing tube packet
The first pipe portion in first space and the second pipe portion in the second space are included, wherein first pipe
Portion is equipped at least two first openings for being located at its both sides, and the tail-gas after treatment apparatus further includes being blocked respectively described
The the first shield portion and the second shield portion of the front end of first opening so that most exhaust streams needs to get around described the
One, the second shield portion can just enter in first opening.
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 shell is equipped with first axle, and the mixing tube is set
There are second axis, the first axle to intersect with the second axis.
As the further improved technical solution of the utility model, the first axle is perpendicular to the second axis.
As the further improved technical solution of the utility model, first pipe portion includes positioned at first opening
Between interconnecting piece, the tail-gas after treatment apparatus includes the shield being welded on the interconnecting piece, first shield portion and institute
State the both sides that the second shield portion is located at the shield.
As the further improved technical solution of the utility model, the tail-gas after treatment apparatus, which is equipped with, is located at the shell
Above and to install urea nozzle so that the urea liquid after atomization to be sprayed into the nozzle mounting base in the mixing tube.
As the further improved technical solution of the utility model, the tail-gas after treatment apparatus further includes being located at described mix
The steel wool in pipe is closed, the steel wool is passed through with for the exhaust and the urea droplets, described to further increase
The broken and evaporation of urea droplets.
As the further improved technical solution of the utility model, the first post-processing carrier module includes diesel particulate
Filter, the second post-processing carrier module includes selective catalytic reducing agent.
As the further improved technical solution of the utility model, the tail-gas after treatment apparatus further includes being located at described the
The oxidation catalyzer of the upstream of one post-processing carrier module.
As the further improved technical solution of the utility model, first shield portion is equipped with and sticks in the shell
First arc-shaped edges of side, second shield portion are equipped with the second arc-shaped edges for sticking on the case inside.
Compared to the prior art, the utility model carries out rectification by the way that the first, second shield portion is arranged, and improves air-flow point
The uniformity of cloth, improves mixed effect.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the utility model tail-gas after treatment apparatus.
Fig. 2 is the stereoscopic schematic diagram of another angles of Fig. 1.
Fig. 3 is the part isometric exploded view of Fig. 1.
Fig. 4 is the part isometric exploded view of another angles of Fig. 3.
Fig. 5 is the stereogram exploded view of mixer assembly in Fig. 3.
Fig. 6 is the stereogram exploded view of another angles of Fig. 5.
Fig. 7 is the front view of Fig. 1.
Fig. 8 is the rearview of Fig. 1.
Fig. 9 is the vertical view of Fig. 1.
Figure 10 is the upward view of Fig. 1.
Figure 11 is the left view of Fig. 2.
Figure 12 is the right view of Fig. 2.
Figure 13 is the diagrammatic cross-section of the line A-A along Fig. 9.
Figure 14 is the diagrammatic cross-section of the line B-B along Fig. 9.
Figure 15 is the diagrammatic cross-section of the line C-C along Figure 13.
Specific implementation mode
It please join shown in Fig. 1 to Figure 15, the utility model discloses a kind of tail-gas after treatment apparatus 100, starts to handle
The tail gas of machine is to reduce the discharge of harmful substance.The tail-gas after treatment apparatus 100 includes the first post-processing carrier module 1, the
Two post-process carrier modules 2 and are post-processed between carrier module 1 and the second post-processing carrier module 2 positioned at described first
Mixer assembly 3.In the utility model embodiment illustrated, after the first post-processing carrier module 1, described second
Handle carrier module 2 and the arrangement of the mixer assembly 3 point-blank.It please join shown in Figure 13, first post-processing
Carrier module 1 includes diesel particulate filter (DPF) 12, and the second post-processing carrier module 2 includes selective catalytic reduction
Agent (SCR) 21.In the utility model embodiment illustrated, the tail-gas after treatment apparatus 100 further includes being located at described the
The oxidation catalyzer (DOC) 11 of the upstream of one post-processing carrier module 12.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 shell 31, the mixing tube 32 in the shell 31, is fixed on the mixing tube
Partition board 33, the steel wool 34 and shield 35 in the mixing tube 32 of 32 periphery.The partition board 33 is by the shell
31 are separated into the first space 331 being connected with the first post-processing carrier module 1 and post-process carrier with described second
The second space 332 that component 2 is connected.The mixing tube 32 include be located at first space 331 in the first pipe portion 321 with
And the second pipe portion 322 in the second space 332, wherein first pipe portion 321, which is equipped with, is located at its both sides
At least two first openings 3211 and the interconnecting piece 3212 between first opening 3211.First opening 3211
Enter to supply stream.The shield 35 is welded on the interconnecting piece 3212, is equipped with positioned at the first shield portion 351 of both sides
With the second shield portion 352.First shield portion 351 and the second shield portion 352 are blocked respectively in first opening 3211
Front end so that most exhaust streams, which needs to get around first, second shield portion 351,352 just, can enter described
In one opening 3211.So set, avoid exhaust stream forms reflection directly into mixing tube 32 and on tube wall, gas is influenced
Stream mixed uniformity and stationarity.In the utility model embodiment illustrated, first shield portion 351 is equipped with and reclines
The first arc-shaped edges 3511 in 31 inside of the shell, second shield portion 352, which is equipped with, sticks on 31 inside of the shell
Second arc-shaped edges 3521 form air-flow and hinder to play the effect of rectification.
In the utility model embodiment illustrated, the shell 31 is cylindrical, is equipped with first axle 311；Institute
It is cylindrical to state mixing tube 32, is equipped with second axis 323, the first axle 311 intersects with the second axis 323.It is excellent
Selection of land, the first axle 311 is perpendicular to the second axis 323.Certainly, in other embodiments, the shell 31 with
The mixing tube 32 can also be other shapes, such as ellipse etc..
The partition board 33 include positioned at 32 side of the mixing tube the first plate 333, be located at the mixing tube 32 it is another
The third plate 335 of second plate 334 of side and connection first plate 333 and second plate 334, the third
Plate 335 is equipped with the through-hole 336 passed through for the mixing tube 32.In the utility model embodiment illustrated, the mixing
Pipe 32 is in tilted layout；First plate 333, which is equipped with, sticks on the first arcwall face 337 in first pipe portion 321, and described the
Two plates 334 are equipped with the second arcwall face 338 sticked in second pipe portion 322.
The tail-gas after treatment apparatus 100, which is equipped with, to be located on the shell 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, when engine exhaust across first post-processing carrier module 1 into
When entering into the first space 331, exhaust enters mixing tube 32 around the first, second shield 351,352 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, subsequently depart from the mixing tube 32 and enter in second space 332, and reach second positioned at downstream
Post-process carrier module 2.So set, by eddy flow increase Urea Evaporation away from discrete time, improve air-flow mixing
Uniformity reduces the risk of urea crystals.
In addition, the utility model utilizes the 3D porous structures or multiple-void structure of steel wool 34, exhaust and the urine
Plain drop passes through steel wool 34 that urea droplets is made adequately to be crushed and mix on the surface of steel wool and internal generation.In addition, by
Smaller in the line footpath of steel wool, gap is complicated, and heat transfer area is big, is conducive to urea droplets and relatively adequately heat exchange occurs with exhaust,
To the evaporation and pyrolysis conducive to urea droplets, Crystallization is improved.It can be with by the adjusting of the density to steel wool 34
Correspondingly adjust the back pressure of system.
In addition, above example is merely to illustrate the utility model and not limits technical side described in 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 detailed description 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 comprising the first post-processing carrier module, second post-process carrier module and be located at
Mixer assembly between the first post-processing carrier module and the second post-processing carrier module, wherein the mixer
Component includes shell, the mixing tube in the shell and the peripheral partition board for being fixed on the mixing tube, the partition board
The shell is divided into the first space being connected with the first post-processing carrier module and is carried with second post-processing
The second space that body component is connected, the mixing tube include the first pipe portion being located in first space and are located at described
The second pipe portion in second space, wherein first pipe portion is equipped at least two first openings for being located at its both sides,
It is characterized in that：The tail-gas after treatment apparatus further include block respectively it is described first opening front end the first shield portion and
Second shield portion so that most exhaust streams, which needs to get around first, second shield portion, can just enter described first
In opening.
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 claimed in claim 2, it is characterised in that：The shell is equipped with first axle, described mixed
It closes pipe and is equipped with second axis, the first axle intersects with the second axis.
4. tail-gas after treatment apparatus as claimed in claim 3, it is characterised in that：The first axle is perpendicular to second axis
Line.
5. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：First pipe portion includes being located at described first
Interconnecting piece between opening, the tail-gas after treatment apparatus include the shield being welded on the interconnecting piece, first shield
Portion is located at the both sides of the shield with second shield portion.
6. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：The tail-gas after treatment apparatus, which is equipped with, is located at institute
It states on shell and to install urea nozzle so that the urea liquid after atomization to be sprayed into the nozzle mounting base in the mixing tube.
7. tail-gas after treatment apparatus as claimed in claim 6, it is characterised in that：The tail-gas after treatment apparatus further includes being located at
Steel wool in the mixing tube, the steel wool is passed through with for the exhaust and urea droplets, to further increase
State the broken and evaporation of urea droplets.
8. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：The first post-processing carrier module includes bavin
Oil particles filter, the second post-processing carrier module includes selective catalytic reducing agent.
9. tail-gas after treatment apparatus as claimed in claim 8, it is characterised in that：The tail-gas after treatment apparatus further includes being located at
The oxidation catalyzer of the upstream of the first post-processing carrier module.
10. tail-gas after treatment apparatus as described in claim 1, it is characterised in that：First shield portion is equipped with and sticks on institute
The first arc-shaped edges of case inside are stated, second shield portion is equipped with the second arc-shaped edges for sticking on the case inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096771.9U CN207879438U (en) | 2018-01-19 | 2018-01-19 | Tail-gas after treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096771.9U CN207879438U (en) | 2018-01-19 | 2018-01-19 | Tail-gas after treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207879438U true CN207879438U (en) | 2018-09-18 |
Family
ID=63508372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820096771.9U Active CN207879438U (en) | 2018-01-19 | 2018-01-19 | Tail-gas after treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207879438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185518A (en) * | 2019-05-24 | 2019-08-30 | 安徽江淮汽车集团股份有限公司 | Post-process integrating device and diesel engine |
-
2018
- 2018-01-19 CN CN201820096771.9U patent/CN207879438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185518A (en) * | 2019-05-24 | 2019-08-30 | 安徽江淮汽车集团股份有限公司 | Post-process integrating device and diesel engine |
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