CN109578120A - Exhaust aftertreatment mixing arrangement - Google Patents
Exhaust aftertreatment mixing arrangement Download PDFInfo
- Publication number
- CN109578120A CN109578120A CN201811076266.9A CN201811076266A CN109578120A CN 109578120 A CN109578120 A CN 109578120A CN 201811076266 A CN201811076266 A CN 201811076266A CN 109578120 A CN109578120 A CN 109578120A
- Authority
- CN
- China
- Prior art keywords
- shell
- exhaust aftertreatment
- mixing arrangement
- cavity
- aftertreatment mixing
- 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.)
- Pending
Links
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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
-
- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
Landscapes
- 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 aftertreatment mixing arrangement comprising shell and be located at the intracorporal mixing tube of the shell.The shell includes first shell and second shell, wherein the first shell includes the first cavity to be connected to the first after-treatment device, the second shell includes the second cavity to be connected to the second after-treatment device.The shell is equipped with the demarcation plate for separating first cavity and second cavity, and the demarcation plate is equipped with mounting hole.The mixing tube includes cyclone pipe and the connecting tube that is fabricated separately but links together with the cyclone pipe.The cyclone pipe includes the spinning disk in first cavity and the mounting portion positioned at the lower section of the spinning disk.The mounting portion is inserted and fixed into the mounting hole, and the mounting portion passes through the mounting hole mutually to fix with the connecting tube.So set, improving the flexibility of mixing tube arrangement and installation.
Description
Technical field
The present invention relates to a kind of exhaust aftertreatment mixing arrangements, belong to motor exhaust post-processing technology field.
Background technique
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, will 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 will lead to that catalyst aging is uneven, to influence the overall performance of catalyst.In addition, urea solution
The uneven distribution of drop will cause local tube wall or mixed structure temperature is too low, forms crystallization, offgas duct can be blocked when serious, is led
Cause engine power performance decline.
In order to reduce the risk of urea crystals, mixing tube is usually set in the prior art.However, mounting arrangements are limited to,
How the technical issues of reasonably arrangement and installation are this field urgent need to resolve is carried out to mixing tube.
Summary of the invention
It is easy to the exhaust aftertreatment mixing arrangement arranged the purpose of the present invention is to provide a kind of mixing tube.
To achieve the above object, the present invention adopts the following technical scheme: a kind of exhaust aftertreatment mixing arrangement comprising shell
Body and be located at the intracorporal mixing tube of the shell, the shell include first shell and matched with the first shell the
Two shells, wherein the first shell includes the first cavity to be connected to the first after-treatment device, the second shell packet
The second cavity to be connected to the second after-treatment device is included, the shell, which is equipped with, separates first cavity and second chamber
The demarcation plate of body, the demarcation plate are equipped with mounting hole；The mixing tube includes cyclone pipe and is fabricated separately with the cyclone pipe
But the connecting tube to link together, the cyclone pipe include the spinning disk in first cavity and are located at the eddy flow
The mounting portion of the lower section of piece, the mounting portion are inserted and fixed into the mounting hole, and the mounting portion passes through the mounting hole
Mutually to be fixed with the connecting tube.
Technical solution as a further improvement of that present invention, the cyclone pipe have round table-like outer surface, the eddy flow
Piece is divided into two groups along the axis of the cyclone pipe and is arranged on the outer surface.
Technical solution as a further improvement of that present invention, the mounting portion are in compared to the other parts of the cyclone pipe
Flared.
Technical solution as a further improvement of that present invention, the exhaust aftertreatment mixing arrangement, which is equipped with, is located at the eddy flow
The top of piece and the mounting base to install urea nozzle, urine of the urea nozzle to the jet atomization into the mixing tube
Plain drop.
Technical solution as a further improvement of that present invention, the demarcation plate are located at the bottom of the first shell.
Technical solution as a further improvement of that present invention, the first shell and the second shell are at least partly mutual
It connects together.
Technical solution as a further improvement of that present invention, the connecting tube are equipped with and at least partly accommodate the mounting portion
Expansion mouth.
Technical solution as a further improvement of that present invention, if the connecting tube is equipped with positioned at the lower section of the expansion mouth
Dry side cinclides.
Technical solution as a further improvement of that present invention, the exhaust aftertreatment mixing arrangement include being fixed on the company
The porous plate of bottom on the inner wall of adapter tube and positioned at the connecting tube.
Technical solution as a further improvement of that present invention, the exhaust aftertreatment mixing arrangement further include being located at described mix
Close the ω shape reflecting plate of the lower section of pipe.
Compared to the prior art, the present invention is fabricated separately by setting cyclone pipe and with the cyclone pipe but is connected to one
The connecting tube risen improves the flexibility of mixing tube arrangement and installation.
Detailed description of the invention
Fig. 1 is the main view of exhaust aftertreatment mixing arrangement of the present invention.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the diagrammatic cross-section of the line A-A along Fig. 1.
Fig. 4 is the stereogram exploded view of exhaust aftertreatment mixing arrangement of the present invention.
Specific embodiment
It please join shown in Fig. 1 to Fig. 4, present invention discloses a kind of exhaust aftertreatment mixing arrangements 100, to handle engine
Exhaust.The exhaust aftertreatment mixing arrangement 100 include shell 1, the mixing tube 2 in the shell 1 and with it is described
The baffle plate assembly 3 that shell 1 matches.
The shell 1 includes first shell 11 and the second shell 12 matched with the first shell 11, wherein institute
State first shell 11 include to the first after-treatment device (such as diesel particulate trap and oxidizing catalytic converter, not
Diagram) connection the first cavity 110；The second shell 12 include to the second after-treatment device (such as selective catalysis
It is reducing agent, not shown) the second cavity 120 of connection.The shell 1, which is equipped with, separates first cavity 110 and second chamber
The demarcation plate 13 of body 120, the demarcation plate 13 are equipped with mounting hole 131.In illustrative embodiments of the present invention, the demarcation plate
13 are located at the bottom of the first shell 11.Preferably, the demarcation plate 13 is integrally formed with the first shell 11, to save
The quantity of components.The first shell 11 at least partly mutually connects together with the second shell 12, to form one
It is whole.
The exhaust aftertreatment mixing arrangement 100 is equipped with the mounting base 14 to install urea nozzle 4, the urea nozzle
4 urea droplets to the jet atomization into the mixing tube 2.
The mixing tube 2 includes cyclone pipe 21 and the connecting tube for being fabricated separately but linking together with the cyclone pipe 21
22.The cyclone pipe 21 includes spinning disk 211 in first cavity 110 and under the spinning disk 211
The mounting portion 212 of side.In illustrative embodiments of the present invention, the cyclone pipe 21 has round table-like outer surface 213, described
Spinning disk 211 is divided into two groups along the axis of the cyclone pipe 21 and is arranged on the outer surface 213.The mounting portion 212 is compared
In the cyclone pipe 21 other parts be in flared.When installation, the mounting portion 212 is inserted and fixed into the mounting hole
In 131, the mounting portion 212 passes through the mounting hole 131 to fix with 22 phase of connecting tube.
The connecting tube 22 is equipped with the expansion mouth 221 at least partly accommodating the mounting portion 212 and is located at the flaring
Several areoles 222 of the lower section in portion 221.
The baffle plate assembly 3 includes baffle portion 31 and the first flange 32 and second method fixed with 31 phase of baffle portion
Orchid 33.
In order to further increase the broken and evaporation of urea, the exhaust aftertreatment mixing arrangement 100 further includes being fixed on
The porous plate 5 of bottom on the inner wall of the connecting tube 22 and positioned at the connecting tube 22.
The exhaust aftertreatment mixing arrangement 100 further includes the ω shape reflecting plate 6 positioned at the lower section of the mixing tube 2, with
It realizes the effect of double-cyclone, reduces urea crystals risk.
Above embodiments are merely to illustrate the present invention and not limit the technical scheme described by the invention, to this specification
Understanding should based on person of ordinary skill in the field, although this specification referring to the above embodiments to the present invention
Detailed description is had been carried out, still, those skilled in the art should understand that, person of ordinary skill in the field is still
Can so modify or equivalently replace the present invention, and all do not depart from the spirit and scope of the present invention technical solution and
It is improved, and should all be covered in scope of the presently claimed invention.
Claims (10)
1. a kind of exhaust aftertreatment mixing arrangement comprising shell and be located at the intracorporal mixing tube of the shell, the shell packet
The second shell for including first shell and being matched with the first shell, wherein the first shell includes to after with first
First cavity of processing unit connection, the second shell includes the second cavity to be connected to the second after-treatment device,
Be characterized in that: the shell is equipped with the demarcation plate for separating first cavity and second cavity, and the demarcation plate is equipped with peace
Fill hole；The mixing tube includes cyclone pipe and the connecting tube that is fabricated separately but links together with the cyclone pipe, the rotation
Flow tube includes the spinning disk in first cavity and the mounting portion positioned at the lower section of the spinning disk, the mounting portion
It is inserted and fixed into the mounting hole, the mounting portion passes through the mounting hole mutually to fix with the connecting tube.
2. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the cyclone pipe has round table-like outer
Surface, the spinning disk are divided into two groups along the axis of the cyclone pipe and are arranged on the outer surface.
3. exhaust aftertreatment mixing arrangement as claimed in claim 2, it is characterised in that: the mounting portion is compared to the eddy flow
The other parts of pipe are in flared.
4. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the exhaust aftertreatment mixing arrangement is set
There are the top positioned at the spinning disk and the mounting base to install urea nozzle, the urea nozzle is to the mixing tube
The urea droplets of middle jet atomization.
5. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the demarcation plate is located at the first shell
The bottom of body.
6. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the first shell and the second shell
Body at least partly mutually connects together.
7. exhaust aftertreatment mixing arrangement as claimed in claim 3, it is characterised in that: the connecting tube, which is equipped with, at least partly to be held
Receive the expansion mouth of the mounting portion.
8. exhaust aftertreatment mixing arrangement as claimed in claim 7, it is characterised in that: the connecting tube, which is equipped with, is located at the expansion
Several areoles of the lower section of oral area.
9. exhaust aftertreatment mixing arrangement as claimed in claim 8, it is characterised in that: the exhaust aftertreatment mixing arrangement packet
Include on the inner wall for being fixed on the connecting tube and be located at the porous plate of the bottom of the connecting tube.
10. exhaust aftertreatment mixing arrangement as described in claim 1, it is characterised in that: the exhaust aftertreatment mixing arrangement
It further include the ω shape reflecting plate positioned at the lower section of the mixing tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076266.9A CN109578120A (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076266.9A CN109578120A (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578120A true CN109578120A (en) | 2019-04-05 |
Family
ID=65919763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811076266.9A Pending CN109578120A (en) | 2018-09-14 | 2018-09-14 | Exhaust aftertreatment mixing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578120A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685781A (en) * | 2019-11-14 | 2020-01-14 | 清华大学苏州汽车研究院（吴江） | Tail gas treatment device |
| CN113623056A (en) * | 2021-09-15 | 2021-11-09 | 无锡威孚力达催化净化器有限责任公司 | Double-cyclone tight coupling mixer |
| CN114439581A (en) * | 2021-12-31 | 2022-05-06 | 潍柴动力股份有限公司 | Mixer, diesel engine tail gas treatment system and diesel vehicle |
| CN118148751A (en) * | 2024-05-13 | 2024-06-07 | 潍柴动力股份有限公司 | Mixer, SCR, aftertreatment system and vehicle |
-
2018
- 2018-09-14 CN CN201811076266.9A patent/CN109578120A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685781A (en) * | 2019-11-14 | 2020-01-14 | 清华大学苏州汽车研究院（吴江） | Tail gas treatment device |
| CN110685781B (en) * | 2019-11-14 | 2024-05-14 | 清华大学 | Tail gas treatment device |
| CN113623056A (en) * | 2021-09-15 | 2021-11-09 | 无锡威孚力达催化净化器有限责任公司 | Double-cyclone tight coupling mixer |
| CN114439581A (en) * | 2021-12-31 | 2022-05-06 | 潍柴动力股份有限公司 | Mixer, diesel engine tail gas treatment system and diesel vehicle |
| CN118148751A (en) * | 2024-05-13 | 2024-06-07 | 潍柴动力股份有限公司 | Mixer, SCR, aftertreatment system and vehicle |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |