CN206477903U - Tail-gas after treatment apparatus - Google Patents
Tail-gas after treatment apparatus Download PDFInfo
- Publication number
- CN206477903U CN206477903U CN201720152256.3U CN201720152256U CN206477903U CN 206477903 U CN206477903 U CN 206477903U CN 201720152256 U CN201720152256 U CN 201720152256U CN 206477903 U CN206477903 U CN 206477903U
- Authority
- CN
- China
- Prior art keywords
- hybrid chamber
- gas
- mixing tube
- tail
- antipriming pipe
- 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.)
- Withdrawn - After Issue
Links
- 238000002156 mixing Methods 0.000 claims abstract description 57
- 238000009987 spinning Methods 0.000 claims abstract description 25
- 239000004202 carbamide Substances 0.000 claims abstract description 21
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 241000233855 Orchidaceae Species 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 abstract description 7
- 230000008025 crystallization Effects 0.000 abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010397 one-hybrid screening Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
A kind of tail-gas after treatment apparatus, it includes the first hybrid chamber component, the second hybrid chamber component and catalyst carrier component.The first hybrid chamber component includes the first housing, air inlet pipe and the first mixing tube being at least partially disposed in first hybrid chamber provided with the first hybrid chamber.First mixing tube is provided with the first body being located in first hybrid chamber and the second body for extending first hybrid chamber, wherein the side wall of first body is provided with some spinning disks being located in first hybrid chamber.The tail-gas after treatment apparatus also includes the antipriming pipe being located in first mixing tube.In the axial direction of the antipriming pipe, the length of the spinning disk is completely covered in the opening area of the antipriming pipe.It is arranged such, spray-cone angle can be protected, is avoided as much as urea droplets and directly beats on spinning disk, so as to reduce crystallization risk.
Description
Technical field
The utility model is related to a kind of tail-gas after treatment apparatus, belongs to motor exhaust post-processing technology field.
Background technology
Research shows 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 skewness can cause regional area
Ammonia is excessive so as to easily cause NH_3 leakage, and causes oxynitrides (NOx) transformation efficiency too low 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.In addition, urea solution
The uneven distribution of drop can cause local tube wall or mixed structure temperature too low, form crystallization, offgas duct can be blocked when serious, is led
Engine power performance is caused to decline.
On November 23rd, 2016, the Chinese utility model patent CN205714382U of bulletin disclosed one kind in mixing tube
The engine exhaust aftertreatment system of middle addition antipriming pipe.This scheme to urea because can in advance be crushed, so as to drop
The probability that low urea is directly contacted with tube wall, reduces urea crystals risk to a certain degree.However, the design is because in fin
Antipriming pipe is not set at position, therefore urea droplets can directly get to the junction of fin and antipriming pipe and mixing tube
On, however it remains crystallization risk.In addition, it is also the technical issues that need to address that preferably support how is carried out to antipriming pipe.
Utility model content
The purpose of this utility model is to provide a kind of anti-urea crystals ability stronger tail-gas after treatment apparatus.
To achieve the above object, the utility model is adopted the following technical scheme that：A kind of tail-gas after treatment apparatus, it includes
One hybrid chamber component, the second hybrid chamber component positioned at the downstream of the first hybrid chamber component and positioned at described second mixing
The catalyst carrier component of chamber assemblies downstream, the first hybrid chamber component include provided with the first hybrid chamber the first housing, with
The air inlet pipe of first hybrid chamber connection and the first mixing tube being at least partially disposed in first hybrid chamber, described the
One mixing tube is provided with the first body being located in first hybrid chamber and the second body for extending first hybrid chamber,
The side wall of wherein described first body is provided with some spinning disks being located in first hybrid chamber；The second hybrid chamber component
The second mixing tube including the second housing and in the second shell body, second mixing tube is provided with just to described first
Mixing tube is to force the kuppe of flow reversal, and the tail-gas after treatment apparatus also includes being located in first mixing tube
Antipriming pipe；In the axial direction of the antipriming pipe, the length of the spinning disk is completely covered in the opening area of the antipriming pipe.
As the further improved technical scheme of the utility model, first housing is provided with to install urea nozzle
The inner side of the end wall is fixed in end wall, one end of the antipriming pipe, and the other end of the antipriming pipe extends into second pipe
In body.
As the further improved technical scheme of the utility model, if the other end of the antipriming pipe is provided with radially protruding
Dry support arm, the support arm is fixed on the inwall of second body.
As the further improved technical scheme of the utility model, the antipriming pipe is coaxially set with first mixing tube
Put, the annular gap being connected with the spinning disk is formed between the antipriming pipe and first mixing tube.
As the further improved technical scheme of the utility model, the air inlet pipe mixes tube side-by-side with described first and flat
Row arrangement, the air inlet pipe is provided with inlet cone, the air inlet antipriming pipe that is engaged with the inlet cone and porous with the air inlet
The blind flange plate that pipe is engaged, the air inlet antipriming pipe is located in first hybrid chamber, and the inlet cone is located at the air inlet
The side of antipriming pipe, the blind flange plate is located at the opposite side of the air inlet antipriming pipe, wherein the inlet cone and the blind
Blue plate is removably joined together with first housing.
As the further improved technical scheme of the utility model, the side wall of first body, which is provided with, is located at the eddy flow
Some perforates between piece and the end wall, the perforate is connected with first hybrid chamber.
As the further improved technical scheme of the utility model, the first hybrid chamber component is provided with being welded on described the
First flange on two bodys, the second hybrid chamber component is provided with the second flange being welded on second housing, described
First flange is removably joined together with the second flange by bolt.
As the further improved technical scheme of the utility model, the kuppe is in bowl-shape, and it is provided with arc end wall.
As the further improved technical scheme of the utility model, the second hybrid chamber component is provided with support described second
The first supporting plate and the second supporting plate of mixing tube, first supporting plate is parallel to each other with second supporting plate, described
Second mixing tube is through first supporting plate and second supporting plate, and first supporting plate is interior with second housing
Between wall provided with supply stream through the first gap, between second supporting plate and the inwall of second housing provided with supply
Flow through the second gap.
As the further improved technical scheme of the utility model, the catalyst carrier component includes selective catalysis also
Former agent, the catalyst carrier component is removably joined together with second housing.
Compared to prior art, the utility model in first mixing tube by setting antipriming pipe, and described many
In the axial direction of hole pipe, the length of the spinning disk is completely covered in the opening area of the antipriming pipe, is arranged such, and can protect spray
Pencil angle, is avoided as much as urea droplets and directly beats on spinning disk, so as to reduce crystallization risk.By setting antipriming pipe pair
Protected at the position of spinning disk, also provide more preferable flexibility for spinning disk Design of length.In addition, porous by adjusting
Pipe and the aperture of spinning disk overlapping region, the inside and outside flow of antipriming pipe can be adjusted, so that more using in pipe
Heat, improves flow velocity, and then accelerates urea to crush, and improves the Crystallization of the first mixing tube.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the utility model tail-gas after treatment apparatus.
Fig. 2 is Fig. 1 part isometric exploded view.
Fig. 3 is the part isometric exploded view of the first hybrid chamber component in Fig. 2.
Fig. 4 is the further three-dimensional exploded views of Fig. 3.
Fig. 5 is the stereogram of antipriming pipe in Fig. 4.
Fig. 6 is the three-dimensional exploded view of the second hybrid chamber component in Fig. 2.
Fig. 7 is the three-dimensional exploded view of another angles of Fig. 6.
Fig. 8 is Fig. 1 right view.
Fig. 9 is the diagrammatic cross-section of the line A-A along along Fig. 8.
Embodiment
It please join shown in Fig. 1 to Fig. 9, the utility model discloses a kind of tail-gas after treatment apparatus 100, to handle engine
Tail gas.The tail-gas after treatment apparatus 100 includes the first hybrid chamber component 1, the downstream positioned at the first hybrid chamber component 1
The second hybrid chamber component 2 and the catalyst carrier component 3 positioned at the downstream of the second hybrid chamber component 2.It is new in this practicality
In type embodiment illustrated, the catalyst carrier component 3 includes selective catalytic reducing agent.
The first hybrid chamber component 1 includes the first housing 11 provided with the first hybrid chamber 10 and first hybrid chamber
The air inlet pipe 12 of 10 connections and the first mixing tube 13 being at least partially disposed in first hybrid chamber 10.The air inlet pipe 12
With first mixing tube 13 side by side and parallel arrangement.The air inlet pipe 12 provided with inlet cone 121, with the phase of inlet cone 121
The air inlet antipriming pipe 122 of cooperation and the blind flange plate 123 being engaged with the air inlet antipriming pipe 122.The air inlet antipriming pipe
122 are located in first hybrid chamber 10, and the inlet cone 121 is located at the side of the air inlet antipriming pipe 122, the blind flange
Plate 123 is located at the opposite side of the air inlet antipriming pipe 122.The inlet cone 121 and the blind flange plate 123 are with described first
Housing 11 is removably joined together.It is arranged such, by the peace for exchanging the inlet cone 121 and the blind flange plate 123
Holding position, can be adjusted to the airintake direction of air inlet pipe 12, so as to adapt to different installation requirements.In addition, described first
Housing 11 is provided with to install urea nozzle (not shown) to spray the end wall 114 of urea into first mixing tube 13.
First mixing tube 13 is provided with the first body 131 being located in first hybrid chamber 10 and extends described
Second body 132 of the first hybrid chamber 10, is located in first hybrid chamber 10 wherein the side wall of first body 131 is provided with
Some spinning disks 1311 and some perforates 1312 between the spinning disk 1311 and the end wall 114, wherein institute
Perforate 1312 is stated with first hybrid chamber 10 to be connected.In the utility model embodiment illustrated, first mixing
Pipe 13 is cylindrical, and first housing 11 is provided with the upper surface 115 of arc-shaped, so that the upper surface 115 and described the
The cavity of arc is formed between one mixing tube 13, in favor of forming eddy flow.The first hybrid chamber component 1, which is additionally provided with, is welded on institute
State the first flange 116 on the second body 132.
The second hybrid chamber component 2 includes the second housing 21, the second mixing tube 23 in second housing 21
And to support the first supporting plate 24 and the second supporting plate 25 of second mixing tube 23.First supporting plate 24 with
Second supporting plate 25 is parallel to each other.The second hybrid chamber component 2 is provided with second be welded on second housing 21
Flange 211.First housing 11 is spaced from each other with second housing 21, the first flange 116 and the second flange
211 are removably joined together by bolt 212.It is arranged such, the utility model is by by the first of the first mixing tube 13
Body 131 is arranged on the outside of the second housing 21 and carries out the eddy flow on shade, therefore the first body 131 by the first housing 11
The structure design (length such as spinning disk 1311, open up density) of piece 1311 can be adjusted flexibly according to design requirement, keep away
Exempt from the size caused by the first mixing tube 13 is entirely designed in single housing in the prior art to limit.In other words, first
Mixed structure on body 131 being capable of independent design, it is to avoid limited by the size of whole housing.In addition, described by adjustment
Cooperation hole position when first flange 116 is with 211 bolt connection of second flange, can adjust the second hybrid chamber component 2
With the setting angle position of the first hybrid chamber component 1, so as to adapt to different installation requirements.
It please join shown in Fig. 9, the second body 132 of first mixing tube 13 extends at least partially into second mixing tube
In 23, second mixing tube 23 is provided with just to first mixing tube 13 to force the kuppe 231 of flow reversal.
In the utility model embodiment illustrated, the kuppe 231 is in bowl-shape, and it is provided with arc end wall 2311.Second pipe
The first blending space 232, second mixing tube 23 and second housing are provided between body 132 and second mixing tube 23
The second blending space 233 is provided between 21.Second mixing tube 23 passes through first supporting plate 24 and described second
Fagging 25.Between the inwall of first supporting plate 24 and second housing 21 provided with supply stream through the first gap 241.
Between the inwall of second supporting plate 25 and second housing 21 provided with supply stream through the second gap 251.
It please join shown in Fig. 4, Fig. 5 and Fig. 9, tail-gas after treatment apparatus 100 of the present utility model also includes being located at described first
Antipriming pipe 14 in mixing tube 13.The antipriming pipe 14 is coaxially disposed with first mixing tube 13, and in the antipriming pipe 14
Annular gap 15 is formed between first mixing tube 13, the annular gap 15 is connected with the spinning disk 1311.Institute
The inner side of the end wall 114 is fixed in the one end for stating antipriming pipe 14, and the other end of the antipriming pipe 14 extends into second pipe
In body 132.In the utility model embodiment illustrated, if the other end of the antipriming pipe 14 is provided with the Heavenly Stems and Earthly Branches of radially protruding
Brace 141, the support arm 141 is fixed on the inwall of second body 132.In the axial direction of the antipriming pipe 14, institute
The length S2 of the spinning disk 1311 is completely covered in the opening area S1 for stating antipriming pipe 14.It is arranged such, spray cone can be protected
Angle, is avoided as much as urea droplets and directly beats on spinning disk 1311, so as to reduce crystallization risk.Moreover, many by setting
Hole pipe 14 also provides more preferable flexibility to being protected at the position of spinning disk 1311 for the Design of length of spinning disk 1311.
In addition, the aperture by adjusting antipriming pipe 14 and the overlapping region of spinning disk 1311, can be carried out to the inside and outside flow of antipriming pipe 14
Regulation, so as to more using the heat in pipe, improve flow velocity, and then accelerates urea to crush, improves the anti-of the first mixing tube 13
Crystallizing power.Furthermore, by by support arm 141 away from the end wall 114 to be arranged on outside spray-cone angle, urea can be avoided
Directly beat on support arm 141, so as to also reduce crystallization risk.It is supported, is also improved by the two ends to antipriming pipe 14
Its reliability.
When the tail gas of engine enters in the first hybrid chamber 10 from air inlet pipe 12, most tail gas are in spinning disk
The first mixing tube 13 and antipriming pipe 14 are rotated under 1311 guiding, a small amount of tail gas enters first from perforate 1312 and mixed
Pipe 13.When meeting injection conditions, urea nozzle sprays urea, the urea droplets and engine of atomization into the first mixing tube 13
Tail gas be mixed together and downstream rotate.It please join shown in the dotted arrow in Fig. 9, then, compel in the presence of kuppe 231
Make air-flow along reversely (such as upstream) flowing of the first blending space 232；Air-flow after reversely is along the second blending space
233, and the catalyst carrier component 3 for being located at downstream is reached through the first gap 241 and the second gap 251.It is arranged such, increases
Urea Evaporation away from discrete time, improve the uniformity of air-flow mixing, reduce the risk of urea crystals.
In addition, above example is merely to illustrate the utility model and not limits the technical side described by the 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 the utility model, still, it will be understood by those within the art that, affiliated skill
The technical staff in art field still can modify or equivalent substitution to the utility model, and all do not depart from this practicality newly
The technical scheme of the spirit and scope of type and its improvement, all should cover in right of the present utility model.
Claims (10)
1. a kind of tail-gas after treatment apparatus, it includes the first hybrid chamber component, positioned at the downstream of the first hybrid chamber component
Second hybrid chamber component and the catalyst carrier component positioned at the second hybrid chamber assemblies downstream, the first hybrid chamber group
Part includes the first housing provided with the first hybrid chamber, the air inlet pipe connected with first hybrid chamber and is at least partially disposed at institute
State the first mixing tube in the first hybrid chamber, first mixing tube be provided with the first body for being located in first hybrid chamber with
And extend the second body of first hybrid chamber, wherein the side wall of first body, which is provided with, is located at first hybrid chamber
Interior some spinning disks；The second hybrid chamber component includes the second housing and the second mixing in the second shell body
Pipe, second mixing tube is provided with just to first mixing tube to force the kuppe of flow reversal, it is characterised in that：
The tail-gas after treatment apparatus also includes the antipriming pipe being located in first mixing tube；In the axial direction of the antipriming pipe, institute
The length of the spinning disk is completely covered in the opening area for stating antipriming pipe.
2. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：First housing is provided with to install urea
The inner side of the end wall is fixed in the end wall of nozzle, one end of the antipriming pipe, and the other end of the antipriming pipe extends into described
In second body.
3. tail-gas after treatment apparatus as claimed in claim 2, it is characterised in that：The other end of the antipriming pipe is provided with radial convex
If the dry support arm gone out, the support arm is fixed on the inwall of second body.
4. tail-gas after treatment apparatus as claimed in claim 3, it is characterised in that：The antipriming pipe and first mixing tube are same
Axle is set, and the annular gap being connected with the spinning disk is formed between the antipriming pipe and first mixing tube.
5. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The air inlet pipe and first mixing tube are simultaneously
Row and be arranged in parallel, the air inlet pipe provided with inlet cone, the air inlet antipriming pipe that is engaged with the inlet cone and with it is described enter
The blind flange plate that gas antipriming pipe is engaged, the air inlet antipriming pipe is located in first hybrid chamber, and the inlet cone is located at institute
The side of air inlet antipriming pipe is stated, the blind flange plate is located at the opposite side of the air inlet antipriming pipe, wherein the inlet cone and institute
Blind flange plate is stated to be removably joined together with first housing.
6. tail-gas after treatment apparatus as claimed in claim 2, it is characterised in that：The side wall of first body, which is provided with, is located at institute
Some perforates between spinning disk and the end wall are stated, the perforate is connected with first hybrid chamber.
7. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The first hybrid chamber component is provided with and is welded on
First flange on second body, the second hybrid chamber component is provided with the second method being welded on second housing
Orchid, the first flange is removably joined together with the second flange by bolt.
8. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The kuppe is in bowl-shape, and it is provided with arc
End wall.
9. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The second hybrid chamber component is provided with support institute
The first supporting plate and the second supporting plate of the second mixing tube are stated, first supporting plate is mutually put down with second supporting plate
OK, second mixing tube passes through first supporting plate and second supporting plate, first supporting plate and described second
Between the inwall of housing provided with supply stream through the first gap, between second supporting plate and the inwall of second housing
Provided with supply stream through the second gap.
10. tail-gas after treatment apparatus as claimed in claim 1, it is characterised in that：The catalyst carrier component includes selection
Property catalytic reducer, the catalyst carrier component is removably joined together with second housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152256.3U CN206477903U (en) | 2017-02-20 | 2017-02-20 | Tail-gas after treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720152256.3U CN206477903U (en) | 2017-02-20 | 2017-02-20 | Tail-gas after treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206477903U true CN206477903U (en) | 2017-09-08 |
Family
ID=59747948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720152256.3U Withdrawn - After Issue CN206477903U (en) | 2017-02-20 | 2017-02-20 | Tail-gas after treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206477903U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149053A1 (en) * | 2017-02-20 | 2018-08-23 | 天纳克（苏州）排放系统有限公司 | Exhaust gas post-treatment apparatus |
| WO2019127311A1 (en) * | 2017-12-26 | 2019-07-04 | 潍柴动力股份有限公司 | Scr system urea mixer and scr system |
| WO2019140864A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment apparatus |
-
2017
- 2017-02-20 CN CN201720152256.3U patent/CN206477903U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018149053A1 (en) * | 2017-02-20 | 2018-08-23 | 天纳克（苏州）排放系统有限公司 | Exhaust gas post-treatment apparatus |
| CN108457726A (en) * | 2017-02-20 | 2018-08-28 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| US10612443B2 (en) | 2017-02-20 | 2020-04-07 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas post-treatment apparatus |
| CN108457726B (en) * | 2017-02-20 | 2024-09-17 | 天纳克（苏州）排放系统有限公司 | Tail gas aftertreatment device |
| WO2019127311A1 (en) * | 2017-12-26 | 2019-07-04 | 潍柴动力股份有限公司 | Scr system urea mixer and scr system |
| WO2019140864A1 (en) * | 2018-01-19 | 2019-07-25 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment apparatus |
| CN110056415A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Exhaust post-treatment apparatus of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20240917 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170908 Effective date of abandoning: 20240917 |