CN205714375U - Blender for diesel car SCR SCR system - Google Patents
Blender for diesel car SCR SCR system Download PDFInfo
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- CN205714375U CN205714375U CN201620642541.9U CN201620642541U CN205714375U CN 205714375 U CN205714375 U CN 205714375U CN 201620642541 U CN201620642541 U CN 201620642541U CN 205714375 U CN205714375 U CN 205714375U
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- scr
- exhaustor
- fixed plate
- spoiler
- blender
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of blender for diesel car SCR SCR system, including exhaustor and spoiler, the SCR nozzle of SCR system is arranged in exhaustor, and injection direction is identical with exhaust gas flow direction, multiple spoilers are fixedly installed in exhaustor, spoiler is positioned at the outside of SCR nozzle, spoiler includes fixed plate part and scale part, the two ends of fixed plate part are fixing with the medial surface of exhaustor respectively to be connected, the root of multiple scale parts is sequentially fixed in fixed plate part, it is provided with angle between two adjacent scale parts, and the plane at place is along fixed plate partial symmetry.This utility model can make carbamide spray droplet mix with the waste gas in exhaustor more fully, improve mixing homogeneity, accelerate the evaporation of carbamide spray droplet, promote the decomposition of carbamide, form the distribution of uniform ammonia, thus improve the NOx conversion efficiency of used urea SCR system, reduce NH_3 leakage, it is to avoid form the problems such as crystallization.
Description
Technical field
This utility model relates to diesel engine automobile air exhausting system, particularly relates to a kind of for diesel car SCR
The blender of SCR system.
Background technology
The major pollutants of diesel emission have: carbon monoxide (CO), unburnt hydrocarbon compound
(Hydrocarbon is called for short HC), oxynitride (NO and NO2 is referred to as NOx), particulate matter (Particle Matter, abbreviation
PM), typically, CO and the HC content of diesel emission is less than the discharge capacity of gasoline engine, but the emission level of itself NOx and PM is high
In gasoline engine.
After SCR technology SCR (Selective Catalytic Reduction) is as effective aerofluxus
Treatment measures, initially apply on the fixed polluter such as boiler, incinerator and power plant, are used for reducing the discharge of NOx.Base
Present principles is using ammonia as reducing agent, under the effect of catalyst by the NOx conversion in waste gas be harmless nitrogen (N2) and
Steam (H2O).Although ammonia itself is nontoxic, but the gas that a kind of pungent taste is the strongest, it is not easy to directly use on automobile,
Therefore use the mode spraying aqueous solution of urea in exhaustor to provide the ammonia needed for reaction.Although SCR system is widely used,
But appoint so some problems of existence to need to solve, such as low temperature NOx conversion efficiency；Urea crystals problem；Mix uneven causing
NOx conversion efficiency is low and NH_3 leakage problem etc..
Research shows that the mixing homogeneity during ammonia is ejected into waste gas in exhaustor is to used urea SCR system overall performance and catalysis
Agent endurance quality has important impact.If ammonia skewness can cause regional area ammonia too much, have little time reaction and cause ammonia
Leakage, and cause NOx conversion efficiency too low at other ammonia thin areas, thus affect the NOx conversion effect of used urea SCR system
Rate, and the problems such as NH_3 leakage occur.Ammonia skewness can cause catalyst aging uneven for a long time, thus affects catalysis
Aging and the endurance quality of agent.On the other hand, the uneven distribution of urea droplets can cause that local temperature is relatively low, urea concentration mistake
Height, forms crystallization then, can block exhaustor time serious, causes the problems such as engine exhaust back pressure increase, power dropping.Carbamide
SCR system blender can make carbamide spray droplet mix with the waste gas in exhaustor more fully, improves mixing homogeneity, adds
The evaporation of fast carbamide spray droplet, promotes the decomposition of carbamide, forms the distribution of uniform ammonia, thus improves the NOx of used urea SCR system
Transformation efficiency, reduces NH_3 leakage, it is to avoid form the problems such as crystallization.
Utility model content
The purpose of this utility model is that provide a kind of urges for diesel car selectivity to solve the problems referred to above
Change the blender of reduction SCR system.
This utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of blender for diesel car SCR SCR system, including exhaustor and spoiler, described
The SCR nozzle of SCR system is arranged in described exhaustor, and injection direction is identical with exhaust gas flow direction, multiple described flow-disturbings
Sheet is fixedly installed in described exhaustor, and described spoiler is positioned at the outside of described SCR nozzle, and described spoiler includes fixed plate
Part and scale part, the two ends of described fixed plate part are fixing with the medial surface of described exhaustor respectively to be connected, multiple described
The root of scale part is sequentially fixed in described fixed plate part, is provided with folder between two adjacent described scale parts
Angle, and the plane at place is along described fixed plate partial symmetry, described spoiler is formed in one structure.
Specifically, all be arrangeding in parallel between multiple described fixed plate parts, two on same described spoiler adjacent
Described scale part between angle be 30 °～70 °, what two adjacent described spoilers were positioned on same vertical line is described
The incline direction of scale part is identical.
Further, described blender also includes positioning gripper shoe, and multiple described location gripper shoe is parallel is fixed on described row
Tracheal strips is also positioned at the outside of described spoiler, and the medial surface of described location gripper shoe is provided with multiple installation draw-in groove, described
Fixed plate part is fixing with described installation draw-in groove to be connected.
Preferably, described location gripper shoe is mutually perpendicular to described fixed plate part.
Preferably, described location gripper shoe and the inwall of the inwall of described exhaustor, described spoiler and described exhaustor
Between all by being welded to connect.
The beneficial effects of the utility model are:
This utility model can make carbamide spray droplet for the blender of diesel car SCR SCR system
Mix with the waste gas in exhaustor more fully, improve mixing homogeneity, accelerate the evaporation of carbamide spray droplet, promote carbamide
Decompose, form the distribution of uniform ammonia, thus improve the NOx conversion efficiency of used urea SCR system, reduce NH_3 leakage, it is to avoid form knot
The problems such as crystalline substance.
Accompanying drawing explanation
Fig. 1 is this utility model blender operating diagram for diesel car SCR SCR system；
Fig. 2 is the scheme of installation of spoiler described in the utility model；
Fig. 3 is the structural representation of spoiler described in the utility model.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1, Figure 2 and Figure 3, this utility model is a kind of for diesel car SCR SCR system
Blender, including exhaustor 2, spoiler 3 and location gripper shoe 4, SCR nozzle 1 is arranged in exhaustor 2, and injection direction with
Exhaust gas flow direction is identical, and multiple spoilers 3 are fixedly installed in exhaustor 2, and spoiler 3 is positioned at the outside of SCR nozzle 1, disturbs
Flow 3 includes fixed plate part 31 and scale part 32, and the two ends of fixed plate part 31 medial surface with exhaustor 2 respectively is fixed
Connecting, multiple scale parts 32 are sequentially fixed on the medial surface of fixed plate part 31, and described spoiler 3 is formed in one knot
Structure, is provided with angle between two adjacent scale parts 32, and the plane at place is symmetrical along fixed plate part 31, same disturbs
The angle between two adjacent scale parts 32 in flow 3 is 30 °～70 °, two adjacent spoilers 3 is positioned at same
The incline direction of the scale part 32 on vertical line is identical, multiple location gripper shoe 4 is parallel be fixed on exhaustor 2 in and be positioned at flow-disturbing
The outside of sheet 3, location gripper shoe 4 is provided with multiple installation draw-in groove, and fixed plate part 31 is fixing with installation draw-in groove to be connected, fixed
Position gripper shoe 4 is mutually perpendicular to fixed plate part 31, location gripper shoe 4 and the inwall of exhaustor 2, spoiler 3 and exhaustor 2
All by being welded to connect between inwall.
This utility model is as follows for the operation principle of the blender of diesel car SCR SCR system:
This blender can be by Flange joint between the discharge duct of automobile, vehicle exhaust and the aqueous solution of urea of atomization
The first mixture of drop, when spoiler 3, is producing the strongest flow-disturbing through later, promotes the urea water of vehicle exhaust and atomization
Solution droplets mixes so that it is mix homogeneously, and urea droplets accelerates urea solution with the collision between scale part 32 simultaneously
The decomposition dripped and gasification, improve the NOX conversion efficiency in SCR system, avoid urea droplets uneven distribution simultaneously and make
The local temperature become is too low, and urea concentration is too high, then forms the situation of crystallization.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, every according to skill of the present utility model
The technology deformation that art scheme is made, within each falling within protection domain of the present utility model.
Claims (5)
1. the blender for diesel car SCR SCR system, it is characterised in that: include exhaustor and disturb
Flow, the SCR nozzle of described SCR system is arranged in described exhaustor, and injection direction is identical with exhaust gas flow direction, multiple
Described spoiler is fixedly installed in described exhaustor, and described spoiler is positioned at the outside of described SCR nozzle, described spoiler bag
Including fixed plate part and scale part, the two ends of described fixed plate part are fixing with the medial surface of described exhaustor respectively to be connected,
Multiple described scale parts are sequentially fixed in described fixed plate part, are provided with folder between two adjacent described scale parts
Angle, and the plane at place is along described fixed plate partial symmetry, described spoiler is formed in one structure.
Blender for diesel car SCR SCR system the most according to claim 1, its feature exists
In: all it be arranged in parallel between multiple described fixed plate parts, two adjacent described scale portions on same described spoiler
/ angle be 30 °～70 °, inclining of the described scale part that two adjacent described spoilers are positioned on same vertical line
Tilted direction is identical.
Blender for diesel car SCR SCR system the most according to claim 1, its feature exists
In: also include positioning gripper shoe, multiple described location gripper shoe is parallel be fixed on described exhaustor in and be positioned at described spoiler
Outside, the medial surface of described location gripper shoe is provided with multiple installation draw-in groove, described fixed plate part installs card with described
Groove is fixing to be connected.
Blender for diesel car SCR SCR system the most according to claim 3, its feature exists
In: described location gripper shoe is mutually perpendicular to described fixed plate part.
Blender for diesel car SCR SCR system the most according to claim 3, its feature exists
In: all by weldering between described location gripper shoe and the inwall of described exhaustor, described spoiler and the inwall of described exhaustor
Connect in succession.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620642541.9U CN205714375U (en) | 2016-06-23 | 2016-06-23 | Blender for diesel car SCR SCR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620642541.9U CN205714375U (en) | 2016-06-23 | 2016-06-23 | Blender for diesel car SCR SCR system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714375U true CN205714375U (en) | 2016-11-23 |
Family
ID=57316957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620642541.9U Active CN205714375U (en) | 2016-06-23 | 2016-06-23 | Blender for diesel car SCR SCR system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714375U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529622A (en) * | 2019-01-16 | 2019-03-29 | 北京工大环能科技有限公司 | One kind being used for more gas internal-combustion engine flue gas tail portion denitrating systems |
| CN109681300A (en) * | 2019-02-28 | 2019-04-26 | 一汽解放汽车有限公司 | A kind of preposition baffle mixing arrangement preventing urea crystals |
| CN110700922A (en) * | 2019-11-25 | 2020-01-17 | 中船动力有限公司 | Mixing pipe of marine SCR system |
| CN113250794A (en) * | 2017-05-24 | 2021-08-13 | 株式会社Lg化学 | Selective catalytic reduction system |
-
2016
- 2016-06-23 CN CN201620642541.9U patent/CN205714375U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250794A (en) * | 2017-05-24 | 2021-08-13 | 株式会社Lg化学 | Selective catalytic reduction system |
| CN113250794B (en) * | 2017-05-24 | 2023-03-14 | 株式会社Lg化学 | Selective catalytic reduction system |
| CN109529622A (en) * | 2019-01-16 | 2019-03-29 | 北京工大环能科技有限公司 | One kind being used for more gas internal-combustion engine flue gas tail portion denitrating systems |
| CN109529622B (en) * | 2019-01-16 | 2023-11-14 | 北京工大环能科技有限公司 | Flue gas tail denitration system for multiple gas internal combustion engines |
| CN109681300A (en) * | 2019-02-28 | 2019-04-26 | 一汽解放汽车有限公司 | A kind of preposition baffle mixing arrangement preventing urea crystals |
| CN110700922A (en) * | 2019-11-25 | 2020-01-17 | 中船动力有限公司 | Mixing pipe of marine SCR system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |