CN205714382U - Engine exhaust aftertreatment system - Google Patents
Engine exhaust aftertreatment system Download PDFInfo
- Publication number
- CN205714382U CN205714382U CN201620533556.1U CN201620533556U CN205714382U CN 205714382 U CN205714382 U CN 205714382U CN 201620533556 U CN201620533556 U CN 201620533556U CN 205714382 U CN205714382 U CN 205714382U
- Authority
- CN
- China
- Prior art keywords
- assembly
- tube
- engine exhaust
- mozzle
- connecting tube
- 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.)
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Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000004202 carbamide Substances 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 210000000078 claw Anatomy 0.000 claims description 9
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000002700 urine Anatomy 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 abstract description 22
- 239000013078 crystal Substances 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002937 thermal insulation foam Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of engine exhaust aftertreatment system, it includes the first aftertreatment assembly, first hybrid chamber assembly and mixer tube assembly, wherein said mixer tube assembly includes mixing tube and the connecting tube being connected with described mixing tube, described mixing tube includes the inner chamber body of hollow, it is centered around the periphery of described inner chamber body and circumferentially distributed some fins, the some flutings corresponding to described some fins and connected with described inner chamber body and some perforates of the side being positioned at described fin, described mixer tube assembly also includes the mozzle being positioned in described connecting tube, described mozzle is fixed on the inwall of described connecting tube and has gap between the inwall of the outer surface of described mozzle and described connecting tube, there is on the outer surface of described mozzle some through holes run through.It is arranged such, reduces the amount directly carrying out the carbamide contacted with the tube wall of connecting tube, reduce the risk of urea crystals.
Description
Technical field
This utility model relates to a kind of engine exhaust aftertreatment system.
Background technology
Engine exhaust aftertreatment system (such as diesel exhaust aftertreatment system) is primarily used to process or the row of evolution
Poisonous and the device of harmful substance in gas.Harmful toxic matter in aerofluxus mainly comprises Hydrocarbon, carbon monoxide, nitrogen oxides
And particulate matter etc..
Prior art has had employing diesel oxidation catalyst (DOC), diesel particulate trap (DPF) and selectivity
The combined scheme of catalytic reducer (SCR) improves the usefulness of vent gas treatment.In a kind of scheme, the catalysis of described oxidized form turns
Parallel operation and grain catcher are arranged in series in the first housing, and additionally arrange the first cavity connected with this first housing；
Described selective catalytic reducing agent is arranged in the second housing, and additionally arranges the second cavity connected with this second housing；
Then by mixing tube, described first, second cavity is together in series.Aerofluxus and urea droplets are mixed in mixing tube, mixing
Thing subsequently enters the second cavity, then by selective catalytic reducing agent, to reduce harmful substance.But, urea nozzle ejects
The urea droplets come the most directly contacts the tube wall of mixing tube, thus produces crystallization.
Utility model content
The purpose of this utility model is to provide a kind of engine exhaust post processing system that can reduce urea crystals risk
System.
For achieving the above object, this utility model adopts the following technical scheme that a kind of engine exhaust aftertreatment system, its
The first hybrid chamber assembly of connecting with described first aftertreatment assembly including the first aftertreatment assembly and mixing with described first
The mixer tube assembly of chamber assembly connection, wherein said mixer tube assembly includes being at least partially disposed in described first hybrid chamber assembly
Mixing tube and the connecting tube that is connected with described mixing tube, described mixing tube include hollow inner chamber body, be centered around described
The periphery of inner chamber body and circumferentially distributed some fins, corresponding to described some fins and some with what described inner chamber body connected
Fluting and be positioned at the side of described fin and near some perforates of urea nozzle installation portion, described mixer tube assembly also includes
Being positioned at the mozzle in described connecting tube, described mozzle is fixed on the inwall of described connecting tube and the appearance of described mozzle
There is between the inwall of face and described connecting tube gap, the outer surface of described mozzle has some through holes run through.
The technical scheme improved further as this utility model, described mozzle includes first near described mixing tube
End and second end relative with described first end, wherein said second end is open.
The technical scheme improved further as this utility model, cylindrically, described first end is provided with described mozzle
Some claws expanded outwardly, described some claws are weldingly fixed on the inwall of described connecting tube, two adjacent claws it
Between form the fluting passed for aerofluxus.
The technical scheme improved further as this utility model, described mozzle is round table-like, described first end straight
Footpath is more than the diameter of described second end, and described first end is weldingly fixed on the inwall of described connecting tube.
The technical scheme improved further as this utility model, described mixing tube and described connecting tube are weldingly fixed on one
Rise.
The technical scheme improved further as this utility model, described mixer tube assembly also includes being socketed in described connection
The outer tube that pipe is peripheral.
The technical scheme improved further as this utility model, described engine exhaust aftertreatment system also includes and institute
State the second aftertreatment assembly that the first aftertreatment assembly is arranged side by side and second connected with described second aftertreatment assembly is mixed
Closing chamber assembly, described mixer tube assembly is connected between described first hybrid chamber assembly and described second hybrid chamber assembly；Institute
State the first aftertreatment assembly and described second aftertreatment assembly by described first hybrid chamber assembly, described mixer tube assembly and
Described second hybrid chamber assembly realizes series connection.
The technical scheme improved further as this utility model, described first aftertreatment assembly includes that diesel oil oxidation is catalyzed
Agent and/or diesel particulate trap, described second aftertreatment assembly includes selective catalytic reducing agent.
The technical scheme improved further as this utility model, described through hole is rounded.
The technical scheme improved further as this utility model, described urea nozzle installation portion is in order to install carbamide spray
Mouth, described urea nozzle is provided with jeting area, and described mozzle is at least partially disposed in this jeting area.
Compared to prior art, this utility model, by arranging mozzle, reduces the direct tube wall with connecting tube and carries out
The amount of the carbamide of contact, reduces the risk of urea crystals.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of this utility model engine exhaust aftertreatment system.
Fig. 2 is the schematic perspective view of another angle of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Fig. 4 is the part isometric exploded view of Fig. 1.
Fig. 5 is the part isometric exploded view of another angle of Fig. 4.
Fig. 6 is the three-dimensional exploded view in the first embodiment of the mixer tube assembly in Fig. 1.
Fig. 7 is the axonometric chart of mozzle in Fig. 6.
Fig. 8 is the three-dimensional exploded view in the second embodiment of the mixer tube assembly in Fig. 1.
Fig. 9 is the engine exhaust aftertreatment system of the first embodiment generalized section of line A-A along Fig. 3.
Figure 10 is the engine exhaust aftertreatment system of the first embodiment generalized section of line B-B along Fig. 3.
Figure 11 is the engine exhaust aftertreatment system of the second embodiment generalized section of line A-A along Fig. 3.
Figure 12 is the engine exhaust aftertreatment system of the second embodiment generalized section of line B-B along Fig. 3.
Detailed description of the invention
Please join shown in Fig. 1 to Figure 12, this utility model discloses a kind of engine exhaust aftertreatment system 100, and it includes
The first hybrid chamber assembly 2 that first aftertreatment assembly 1 connects with described first aftertreatment assembly 1 and described first post processing group
The second hybrid chamber assembly 4 that the second aftertreatment assembly 3 that part 1 is arranged side by side connects with described second aftertreatment assembly 3 and
Connect the mixer tube assembly 5 of described first, second hybrid chamber assembly 2,4.Described first aftertreatment assembly 1 is located after described second
Reason assembly 3 realizes series connection by described first, second hybrid chamber assembly 2,4 and described mixer tube assembly 5.
In this utility model embodiment illustrated, described first aftertreatment assembly 1 includes the first housing 11, is installed on
Oxidized form catalyst (DOC) 12 in described first housing 11, the grain catcher being installed in described first housing 11
(DPF) 13 and be positioned at the exhaust gas intake port 14 of described oxidized form catalyst 12 upstream.Wherein, the catalysis of described oxidized form turns
Parallel operation 12 is positioned at the upstream of described grain catcher 13, to provide suitable temperature when described grain catcher 13 regenerates.
In this utility model embodiment illustrated, described second aftertreatment assembly 3 includes the second housing 31, is installed on
Selective catalytic reducing agent (SCR) 32 in described second housing 31 and be positioned at described selective catalytic reducing agent 32 downstream
Air exit 33.
In this utility model embodiment illustrated, described first hybrid chamber assembly 2 and described second hybrid chamber assembly 4
Shape roughly the same.Described first hybrid chamber assembly 2 is in order to guide described by the aerofluxus from described first aftertreatment assembly 1
Mixer tube assembly 5.Described first hybrid chamber assembly 2 is just being provided with urea nozzle installation portion to the position of described mixer tube assembly 5
21, in order to install urea nozzle (not shown).
Please join shown in Fig. 6, in the first embodiment of this utility model diagram, described mixer tube assembly 5 includes at least
The connecting tube 52 that is connected with described mixing tube 51 of mixing tube 51 that part is positioned in described first hybrid chamber assembly 2 and position
Mozzle 53 in described connecting tube 52.Wherein said mixing tube 51 includes the inner chamber body 511 of hollow, is centered around described inner chamber
The periphery of body 511 and circumferentially distributed some fins 512, corresponding to described some fins 512 and with described inner chamber body 511 even
Logical some flutings 513 and be positioned at the side of described fin 512 and near some perforates 514 of urea nozzle installation portion 21.
Described mozzle 53 is fixed on the inwall of described connecting tube 52 and the outer surface 531 of described mozzle 53 and described connecting tube 52
Inwall between there is gap, the outer surface 531 of described mozzle 53 has some through holes 532 run through.New in this practicality
In type embodiment illustrated, described through hole 532 is rounded.
Described mozzle 53 includes near the first end 533 of described mixing tube 51 and relative with described first end 533
Second end 534, wherein said second end 534 is open.
Please join shown in Fig. 6, Fig. 7, Fig. 9 and Figure 10, described mozzle 53 cylindrically, if described first end 533 is provided with
The dry claw 535 expanded outwardly, described some claws 535 are weldingly fixed on the inwall of described connecting tube 52, adjacent two
The fluting 536 passed for aerofluxus is formed between claw 535.
Please join shown in Fig. 8, Figure 11 and Figure 12, described mozzle 53 is in round table-like, and the diameter of described first end 533 is more than
The diameter of described second end 534, and described first end 533 is weldingly fixed on the inwall of described connecting tube 52.
In this utility model embodiment illustrated, described mixing tube 51 is weldingly fixed on one with described connecting tube 52
Rise.Described mixer tube assembly 5 also includes the outer tube 54 being socketed in described connecting tube 52 periphery.Preferably, can be in connecting tube 52
And the heat-barrier materials such as heat insulation foam are set between outer tube 54, thus realize insulation, reduce the risk of urea crystals.
This utility model engine exhaust aftertreatment system 100 in use, owing to mozzle 53 is at least partially disposed at urine
In the jeting area of element nozzle (ginseng upper and lower angle region shown in Fig. 9 or Figure 11), in the urea liquid therefore ejected extremely
A rare part directly contacts with mozzle 53, and then realizes crushing urea droplets, reduces the wind of urea crystals
Danger.If there being a small amount of urea crystals of urea droplets or the precipitation remained on mozzle 53 tube wall, it is also possible to by through logical
The aerofluxus eddy flow in hole 532 outwards blows away.Further, since between the outer surface 531 of mozzle 53 and the inwall of described connecting tube 52
Having gap, urea crystals can be blown away by aerofluxus by this gap.
It addition, above example is merely to illustrate this utility model and and technical side described by unrestricted this utility model
Case, understanding of this description should be based on person of ordinary skill in the field, although this specification is with reference to above-mentioned
Embodiment has been carried out detailed description to this utility model, but, it will be understood by those within the art that, affiliated skill
This utility model still can be modified or equivalent by the technical staff in art field, and all are new without departing from this practicality
The technical scheme of the spirit and scope of type and improvement thereof, all should contain in right of the present utility model.
Claims (10)
1. an engine exhaust aftertreatment system, it includes that the first aftertreatment assembly connects with described first aftertreatment assembly
The first hybrid chamber assembly and the mixer tube assembly that connects with described first hybrid chamber assembly, wherein said mixer tube assembly bag
Include the mixing tube being at least partially disposed in described first hybrid chamber assembly and the connecting tube being connected with described mixing tube, described
Mixing tube includes the inner chamber body of hollow, the periphery being centered around described inner chamber body and circumferentially distributed some fins, corresponding to institute
State some fins and the some flutings connected with described inner chamber body and the side being positioned at described fin and pacify near urea nozzle
Some perforates in dress portion, it is characterised in that: described mixer tube assembly also includes the mozzle being positioned in described connecting tube, described in lead
Between flow tube is fixed on the inwall of described connecting tube and has between the inwall of the outer surface of described mozzle and described connecting tube
Gap, the outer surface of described mozzle has some through holes run through.
2. engine exhaust aftertreatment system as claimed in claim 1, it is characterised in that: described mozzle includes near described
First end of mixing tube and second end relative with described first end, wherein said second end is open.
3. engine exhaust aftertreatment system as claimed in claim 2, it is characterised in that: described mozzle cylindrically, institute
Stating the first end and be provided with some claws expanded outwardly, described some claws are weldingly fixed on the inwall of described connecting tube, adjacent
Two claws between form the fluting passed for aerofluxus.
4. engine exhaust aftertreatment system as claimed in claim 2, it is characterised in that: described mozzle is round table-like, institute
State the diameter diameter more than described second end of the first end, and described first end is weldingly fixed on the inwall of described connecting tube.
5. engine exhaust aftertreatment system as claimed in claim 1, it is characterised in that: described mixing tube and described connecting tube
It is welded and fixed together.
6. engine exhaust aftertreatment system as claimed in claim 1, it is characterised in that: described mixer tube assembly also includes set
It is connected on the outer tube that described connecting tube is peripheral.
7. engine exhaust aftertreatment system as claimed in claim 1, it is characterised in that: described engine exhaust post processing system
System also include the second aftertreatment assembly of being arranged side by side with described first aftertreatment assembly and with described second aftertreatment assembly
Second hybrid chamber assembly of connection, described mixer tube assembly is connected to described first hybrid chamber assembly and described second hybrid chamber
Between assembly；Described first aftertreatment assembly and described second aftertreatment assembly are by described first hybrid chamber assembly, described mixed
Close pipe assembly and described second hybrid chamber assembly realizes series connection.
8. engine exhaust aftertreatment system as claimed in claim 7, it is characterised in that: described first aftertreatment assembly includes
Diesel oxidation catalyst and/or diesel particulate trap, described second aftertreatment assembly includes selective catalytic reducing agent.
9. engine exhaust aftertreatment system as claimed in claim 1, it is characterised in that: described through hole is rounded.
10. the engine exhaust aftertreatment system as described in any one in claim 1 to 9, it is characterised in that: described urine
Element nozzle mounting portion is in order to install urea nozzle, and described urea nozzle is provided with jeting area, and described mozzle is at least partially disposed at
In this jeting area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533556.1U CN205714382U (en) | 2016-06-03 | 2016-06-03 | Engine exhaust aftertreatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533556.1U CN205714382U (en) | 2016-06-03 | 2016-06-03 | Engine exhaust aftertreatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714382U true CN205714382U (en) | 2016-11-23 |
Family
ID=57301436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620533556.1U Active CN205714382U (en) | 2016-06-03 | 2016-06-03 | Engine exhaust aftertreatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714382U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206945A1 (en) * | 2016-06-03 | 2017-12-07 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment system |
| WO2019140891A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Box-type engine exhaust post-treatmetnt device |
| WO2019140893A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Box-type engine exhaust post-treatment device |
| WO2019144599A1 (en) * | 2018-01-26 | 2019-08-01 | 天纳克（苏州）排放系统有限公司 | Exhaust inlet pipe and exhaust post-treatment apparatus thereof |
| US10612443B2 (en) | 2017-02-20 | 2020-04-07 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas post-treatment apparatus |
-
2016
- 2016-06-03 CN CN201620533556.1U patent/CN205714382U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206945A1 (en) * | 2016-06-03 | 2017-12-07 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment system |
| CN107461250A (en) * | 2016-06-03 | 2017-12-12 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment system |
| CN107461250B (en) * | 2016-06-03 | 2024-06-14 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment system for engine |
| US10612443B2 (en) | 2017-02-20 | 2020-04-07 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas post-treatment apparatus |
| WO2019140891A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Box-type engine exhaust post-treatmetnt device |
| WO2019140893A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Box-type engine exhaust post-treatment device |
| CN110056418A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Box-type exhaust post-treatment apparatus of engine |
| CN110056417A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Box-type exhaust post-treatment apparatus of engine |
| WO2019144599A1 (en) * | 2018-01-26 | 2019-08-01 | 天纳克（苏州）排放系统有限公司 | Exhaust inlet pipe and exhaust post-treatment apparatus thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |