CN207813701U - Exhaust gas post-treatment device - Google Patents
Exhaust gas post-treatment device Download PDFInfo
- Publication number
- CN207813701U CN207813701U CN201820096538.0U CN201820096538U CN207813701U CN 207813701 U CN207813701 U CN 207813701U CN 201820096538 U CN201820096538 U CN 201820096538U CN 207813701 U CN207813701 U CN 207813701U
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- Prior art keywords
- space
- protrusion
- import
- exhaust gas
- treatment device
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Abstract
A kind of exhaust gas post-treatment device comprising the first aftertreatment assembly, exhaust entrance, the second aftertreatment assembly, air exit and mixing chamber component.The mixing chamber component includes the first space, second space and third space, and the top in first space is connected with the third space, and the top of the second space is also connected with the third space.The mixing chamber component is equipped with from bottom and protrudes into the first protrusion in the third space and the second protrusion below first protrusion, to form the 4th space between first protrusion and second protrusion.So set, increase 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 devices, belong to engine exhaust post-processing technology field.
Background technology
Research shows that 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 (NH3) be unevenly distributed and can cause
Oxynitrides (NOx) transformation efficiency is too low, and easily causing ammonia if increasing urea injecting quantity to meet emission performance lets out
Leakage pollution.Urea droplets are easy deposition when touching the lower wall surface of temperature simultaneously, formed crystallization it is serious when can block exhaust
It manages, engine power performance is caused to decline.The mixing uniformity for improving ammonia molecule can effectively improve urea desorption column, reduce
Urea injecting quantity is to reduce the risk of urea crystals.
Therefore, it is necessary to provide a kind of exhaust gas post-treatment device that can improve ammonia molecular mixing uniformity to solve on
State technical problem.
Utility model content
The purpose of this utility model is to provide a kind of rows that the exhaust of engine can be made to be uniformly mixed with urea droplets
Gas after-treatment device.
To achieve the above object, the utility model adopts the following technical solution：A kind of exhaust gas post-treatment device comprising the
One aftertreatment assembly, the exhaust entrance being connected with first aftertreatment assembly, with first aftertreatment assembly and arrange
The second aftertreatment assembly for setting, the air exit being connected with second aftertreatment assembly and it connect described first, second
The mixing chamber component of aftertreatment assembly, the mixing chamber component include shell and the mixer in the shell, wherein
The shell be equipped with first opening, positioned at it is described first opening side second opening and to install urea nozzle with to
The mounting base of urea droplets is sprayed on the mixer, the mixer includes the first import with first opening in communication
The first space with the second import, positioned at the inside of first import, the second space positioned at the inside of second import
And the third space between first space and the second space；The mixer include be located at described first into
The first partition wall between mouth and first space and second between second import and the second space
Partition wall, first partition wall are equipped with several first trepannings for being connected to first import and first space, and described the
Two compartment wall is equipped with several second trepannings for being connected to second import and the second space；The top in first space with
The third space is connected, and the top of the second space is also connected with the third space；The mixer is equipped with convex
The first protrusion in the third space and the second protrusion below first protrusion are stretched into, with described
The 4th space is formed between first protrusion and second protrusion；First protrusion is equipped with first side and second
Side, the first side are equipped with several first perforation for being connected to the third space with the 4th space, the second side
Side is equipped with several second perforation for being connected to the third space with the 4th space, and the 4th space forms double from both sides
The mode of eddy flow enters in second opening.
As the further improved technical solution of the utility model, the mixer is equipped with mutually solid with first partition wall
The first fixed arcwall, first arcwall include positioned at first partition wall inside first part, described first
It is spatially located between the first part and first partition wall；It is defined between the first part and first partition wall
The first eddy flow direction.
As the further improved technical solution of the utility model, the mixer is equipped with mutually solid with second partition wall
The second fixed arcwall, second arcwall include positioned at second partition wall inside second part, described second
It is spatially located between the second part and second partition wall；It is defined between the second part and second partition wall
The second eddy flow direction；Wherein first eddy flow direction be clockwise or counter-clockwise in one, the second eddy flow side
To for another in clockwise or counter-clockwise.
As the further improved technical solution of the utility model, first arcwall further includes from the first part
The first oppositely extending extension, first extension are directly or indirectly fixed on the inner wall of the shell so that described
First import is closed here；Second arcwall further includes from the second oppositely extending extension of the second part, institute
State the inner wall that the second extension is directly or indirectly fixed on the shell so that second import is closed here.
As the further improved technical solution of the utility model, the 4th space further extends to described first and prolongs
Between extending portion and second protrusion and between second extension and second protrusion.
As the further improved technical solution of the utility model, the 4th space also define third eddy flow direction with
4th eddy flow direction, wherein third eddy flow direction is roughly the same with second eddy flow direction, the 4th eddy flow direction
It is roughly the same with first eddy flow direction.
As the further improved technical solution of the utility model, first protrusion includes connecting the first side
With the first top margin of the second side；Second protrusion includes third side, the opposite with the third side the 4th
Second top margin of side and connection the third side and the four side；The first side and the second side
Angle is at an acute angle, and the third side and the angle of the four side are at an acute angle.
As the further improved technical solution of the utility model, the first side is fixed on first arcwall
On, the second side is fixed on second arcwall.
As the further improved technical solution of the utility model, the mixing chamber component further includes in exhaust approach axis
On block the catch in first space, the second space, the third space and the 4th space, force air-flow from
First import enters with second import.
As the further improved technical solution of the utility model, the exhaust gas post-treatment device takes the shape of the letter U, after described first
Processing component includes diesel oxidation catalyst and the diesel particulate trap positioned at the downstream of the diesel oxidation catalyst, institute
It includes selective catalytic reducing agent to state the second aftertreatment assembly.
Compared to the prior art, the utility model is by being arranged the second protrusion in first protrusion and described the
The 4th space is formed between two protrusions.So set, take full advantage of cross section, increase Urea Evaporation distance and when
Between, the uniformity of air-flow mixing is improved, Crystallization is improved.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of the utility model exhaust gas post-treatment device.
Fig. 2 is the stereoscopic schematic diagram of another angles of Fig. 1.
Fig. 3 is the front view of Fig. 2.
Fig. 4 is the rearview of Fig. 2.
Fig. 5 is the vertical view of Fig. 2.
Fig. 6 is the upward view of Fig. 2.
Fig. 7 is the left view of Fig. 2.
Fig. 8 is the right view of Fig. 2.
Fig. 9 is the diagrammatic cross-section of line A-A in Fig. 7.
Figure 10 is the diagrammatic cross-section of line B-B in Fig. 5.
Figure 11 is the optical cable of Fig. 1.
Figure 12 is the optical cable of another angles of Figure 11.
Figure 13 is the further stereogram exploded views of Figure 12.
Figure 14 is the stereogram exploded view of mixing chamber component.
Figure 15 is the stereoscopic schematic diagram of mixing chamber component.
Figure 16 is the stereoscopic schematic diagram of another angles of Figure 15.
Figure 17 is the front view of Figure 15.
Figure 18 is the rearview of Figure 15.
Figure 19 is the stereoscopic schematic diagram removed after Figure 15 middle casings.
Figure 20 is the part isometric exploded view of Figure 15.
Figure 21 is the further stereogram exploded views of Figure 20.
Figure 22 is the diagrammatic cross-section of line C-C in Figure 16, and designates flow rotation direction.
Specific implementation mode
It please join shown in Fig. 1 to Figure 22, the utility model discloses a kind of exhaust gas post-treatment device 200 comprising after first
Processing component 300, the exhaust entrance 301 being connected with first aftertreatment assembly 300 and first aftertreatment assembly
300 the second aftertreatment assemblies 400 being arranged side by side, the air exit 401 that is connected with second aftertreatment assembly 400 and
Connect the mixing chamber component 100 of first, second aftertreatment assembly 300,400.In the utility model embodiment illustrated
In, the exhaust gas post-treatment device 200 takes the shape of the letter U, first aftertreatment assembly 300 include diesel oxidation catalyst (DOC) with
And the diesel particulate trap (DPF) positioned at the downstream of the diesel oxidation catalyst, second aftertreatment assembly 400 include
Selective catalytic reducing agent (SCR).
The mixing chamber component 100 includes shell 1 and the mixer 2 being installed in the shell 1.
In the utility model embodiment illustrated, the shell 1 is equipped with first baffle 11 and the first baffle 11
Opposite second baffle 12 and the shell 13 around the first baffle 11 and the second baffle 12.The first baffle 11
The second opening 112 equipped with the first opening 111 and positioned at the lower section of first opening 111.It is described first opening 111 to
It is flowed into for air-flow, second opening 112 for air-flow flowing out.The top of the shell 13 is welded with mounting base 131.It is described
Mounting base 131 is installing urea nozzle (not shown) to spray urea into the mixer 2.
The mixer 2 includes the first import 201 and the second import 202 being connected with first opening 111.Please
Join shown in Figure 19 to Figure 22, structurally, the mixer 2 includes be located at first opening, 111 both sides first
The first arcwall 31 and described second that partition wall 21 and the second partition wall 22 and first partition wall 21 are fixed together
The second arcwall 32 that partition wall 22 is fixed together, positioned at the inside of first arcwall 31 and with described first, second
The first protrusion 41 that arcwall 31,32 is fixed together and the second protrusion positioned at first protrusion, 41 lower section
42。
In the utility model embodiment illustrated, first arcwall 31 includes being located at first partition wall 21
Inside first part 311 and from the first oppositely extending extension 312 of the first part 311.Described first extends
The inner wall of the shell 1 is directly or indirectly fixed in portion 312 so that first import 201 is closed here.Similarly,
Second arcwall 32 includes positioned at the second part 321 of the inside of second partition wall 22 and from the second part
321 the second oppositely extending extensions 322.Second extension 322 is directly or indirectly fixed on the interior of the shell 1
Wall so that second import 202 is closed here.
It please join shown in Figure 22, the mixer 2 includes between the first partition wall 21 and the first part 311
One space 51, is located at first space 51 at the second space 52 between the second partition wall 22 and the second part 321
Third space 53 between the second space 52.First space 51 is located at the inside of first import 201；It is described
Second space 52 is located at the inside of second import 202.First protrusion 41 and second protrusion 42 are from bottom
It protrudes into the third space 53, the 4th space is formed between first protrusion 41 and second protrusion 42
54.Wherein, first partition wall 21 is equipped with several first trepannings for being connected to first import 201 and first space 51
211, second partition wall 22 is equipped with several second trepannings 221 for being connected to second import 202 and the second space 52；
The top in first space 51 is connected with the third space 53, the top of the second space 52 and the third space
53 are also connected.The first eddy flow direction S1 is defined between the first part 311 and first partition wall 21；Described second
The second eddy flow direction S2 is defined between part 321 and second partition wall 22.Wherein, first eddy flow direction S1 is suitable
Hour hands or counterclockwise in one, second eddy flow direction S2 be clockwise or counter-clockwise in another.It please join figure
Shown in hollow arrow in 22, in the utility model embodiment illustrated, first eddy flow direction S1 is square clockwise
To second eddy flow direction S2 is counterclockwise.So set, the cross section of mixing chamber component 100 can be made full use of,
The mixing distance of urea and exhaust is improved in a manner of forming double-cyclone, improves Urea Evaporation and mixed uniformity, and resistive connection is brilliant
Ability is stronger.
First protrusion 41 is equipped with first side 411 and second side 412, and the first side 411, which is equipped with, to be connected
Lead to several first perforation 4111 of the third space 53 with the 4th space 54, the second side 412 is equipped with connection institute
State several second perforation 4121 of the third space 53 with the 4th space 54.4th space 54 further extends to described
Between first extension 312 and second protrusion 42 and second extension 322 and second protrusion 42 it
Between.4th space 54 is connected with second opening 112 to form double-cyclone.4th space also defines third
Eddy flow direction S3 and the 4th eddy flow direction S4, wherein third eddy flow direction S3 and second eddy flow direction S2 substantially phases
Together, the 4th eddy flow direction S4 is roughly the same with first eddy flow direction S1.
First protrusion 41 includes the first top margin for connecting the first side 411 and the second side 412
413；Second protrusion 42 includes third side 421, the four side 422 opposite with the third side 421 and connects
Connect the second top margin 423 of the third side 421 and the four side 422；The first side 411 and the second side
412 angle is at an acute angle, and the third side 421 is at an acute angle with the angle of the four side 422.
The first side 411 is fixed on first arcwall 31, and the second side 412 is fixed on described second
On arcwall 32.
The mixing chamber component 100 further includes that first space 51, second sky are blocked on exhaust approach axis
Between 52, the catch 6 in the third space 53 and the 4th space 54, force air-flow from first import 201 with it is described
Second import 202 enters.
During use, when the exhaust of engine enters in the mixing chamber component 100, due to by catch 6
Blocking, exhaust are entered from the first, second import 201,202 in shell 1；Then, exhaust is across the first trepanning 211 and second
Trepanning 221 has respectively entered the first space 51 and second space 52；Then, in exhaust along the first eddy flow direction S1 and second
Eddy flow direction S2 is rotated into from both sides in third space 53 respectively；When meeting injection conditions, urea nozzle is empty to third
Between spray urea in 53, the urea droplets of atomization and the exhaust of engine are mixed together, and across the first, second perforation 4111,
4121 enter in the 4th space 54.It please join shown in Figure 22, the mixture of the exhaust of urea droplets and engine is along third
Eddy flow direction S3 and the 4th eddy flow direction S4 enters described second in a manner of forming double-cyclone and is open in 112.
It should be noted that the orientation such as "upper", "lower", " top ", " bottom ", " lower section " described in the utility model
The understanding limited to should not be done, because of the difference according to element placement position, these position relationships should also be as carrying out adaptability reason
Solution.In addition, above example is merely to illustrate the utility model and not limits technical solution described in the utility model, it is right
The understanding of this specification should be based on person of ordinary skill in the field.Although this specification is with reference to the above embodiments
Detailed description is had been carried out to the utility model, still, it will be understood by those of ordinary skill in the art that, technical field
Technical staff still the utility model can be modified or replaced equivalently, and all do not depart from the essence of the utility model
The technical solution and its improvement of god and range, should all cover in the right of the utility model.
Claims (10)
1. a kind of exhaust gas post-treatment device comprising the first aftertreatment assembly, the row being connected with first aftertreatment assembly
Gas entrance, the second aftertreatment assembly being arranged side by side with first aftertreatment assembly are connected with second aftertreatment assembly
The mixing chamber component of logical air exit and connection first, second aftertreatment assembly, the mixing chamber component includes shell
Body and the mixer in the shell, wherein the shell is equipped with the first opening, positioned at the side of first opening
The second opening and to install urea nozzle to spray the mounting base of urea droplets on the mixer, feature exists
In：The mixer includes with the first import of first opening in communication and the second import, positioned at first import
First space of inside, positioned at the inside of second import second space and be located at first space and described second
Third space between space；The mixer includes the first separation between first import and first space
Wall and the second partition wall between second import and the second space, first partition wall are equipped with connection institute
Several first trepannings of the first import and first space are stated, second partition wall, which is equipped with, is connected to second import and institute
State several second trepannings of second space；The top in first space is connected with the third space, the second space
Top be also connected with the third space；The mixer be equipped with protrude into the first protrusion in the third space with
And the second protrusion below first protrusion, with the shape between first protrusion and second protrusion
At the 4th space；First protrusion is equipped with first side and second side, and the first side, which is equipped with, is connected to described the
Several first perforation in three spaces and the 4th space, the second side, which is equipped with, is connected to the third space and the described 4th
Several second perforation in space, the 4th space are entered in a manner of forming double-cyclone in second opening from both sides.
2. exhaust gas post-treatment device as described in claim 1, it is characterised in that：The mixer is equipped with to be separated with described first
Mutually fixed first arcwall of wall, first arcwall include the first part positioned at the inside of first partition wall, institute
First is stated to be spatially located between the first part and first partition wall；The first part and first partition wall it
Between define the first eddy flow direction.
3. exhaust gas post-treatment device as claimed in claim 2, it is characterised in that：The mixer is equipped with to be separated with described second
Mutually fixed second arcwall of wall, second arcwall include the second part positioned at the inside of second partition wall, institute
Second space is stated between the second part and second partition wall；The second part and second partition wall it
Between define the second eddy flow direction；Wherein first eddy flow direction be clockwise or counter-clockwise in one, described second
Eddy flow direction be clockwise or counter-clockwise in another.
4. exhaust gas post-treatment device as claimed in claim 3, it is characterised in that：First arcwall further includes from described
A part of the first oppositely extending extension, first extension are directly or indirectly fixed on the inner wall of the shell, make
It is closed here to obtain first import；Second arcwall further includes from the second oppositely extending extension of the second part
Portion, second extension are directly or indirectly fixed on the inner wall of the shell so that second import is closed here.
5. exhaust gas post-treatment device as claimed in claim 4, it is characterised in that：4th space further extends to described
Between first extension and second protrusion and between second extension and second protrusion.
6. exhaust gas post-treatment device as claimed in claim 3, it is characterised in that：4th space also defines third eddy flow
Direction and the 4th eddy flow direction, wherein third eddy flow direction is roughly the same with second eddy flow direction, the 4th rotation
It is roughly the same with first eddy flow direction to flow direction.
7. exhaust gas post-treatment device as claimed in claim 3, it is characterised in that：First protrusion includes connecting described the
First top margin of a side and the second side；Second protrusion includes third side, opposite with the third side
Four side and connection the third side and the four side the second top margin；The first side and described second
The angle of side is at an acute angle, and the third side and the angle of the four side are at an acute angle.
8. exhaust gas post-treatment device as claimed in claim 7, it is characterised in that：The first side is fixed on first arc
On shape wall, the second side is fixed on second arcwall.
9. the exhaust gas post-treatment device as described in any one of claim 1 to 8, it is characterised in that：The mixing chamber group
Part further includes that first space, the second space, the third space and described the are blocked on exhaust approach axis
The catch in four spaces forces air-flow to enter from first import and second import.
10. exhaust gas post-treatment device as described in claim 1, it is characterised in that：The exhaust gas post-treatment device takes the shape of the letter U, institute
It includes diesel oxidation catalyst and the diesel particulate positioned at the downstream of the diesel oxidation catalyst to state the first aftertreatment assembly
Trap, second aftertreatment assembly includes selective catalytic reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096538.0U CN207813701U (en) | 2018-01-19 | 2018-01-19 | Exhaust gas post-treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096538.0U CN207813701U (en) | 2018-01-19 | 2018-01-19 | Exhaust gas post-treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207813701U true CN207813701U (en) | 2018-09-04 |
Family
ID=63323862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820096538.0U Withdrawn - After Issue CN207813701U (en) | 2018-01-19 | 2018-01-19 | Exhaust gas post-treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207813701U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056412A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Exhaust gas post-treatment device |
| CN110410185A (en) * | 2019-07-03 | 2019-11-05 | 东风商用车有限公司 | A kind of crystallization-preventive close-coupled urea mixing device |
-
2018
- 2018-01-19 CN CN201820096538.0U patent/CN207813701U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056412A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Exhaust gas post-treatment device |
| CN110056412B (en) * | 2018-01-19 | 2024-10-22 | 天纳克（苏州）排放系统有限公司 | Exhaust gas aftertreatment device |
| CN110410185A (en) * | 2019-07-03 | 2019-11-05 | 东风商用车有限公司 | A kind of crystallization-preventive close-coupled urea mixing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20241022 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20241022 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |