CN202220647U - Diesel engine SCR high-efficiency atomization device - Google Patents
Diesel engine SCR high-efficiency atomization device Download PDFInfo
- Publication number
- CN202220647U CN202220647U CN2011203412039U CN201120341203U CN202220647U CN 202220647 U CN202220647 U CN 202220647U CN 2011203412039 U CN2011203412039 U CN 2011203412039U CN 201120341203 U CN201120341203 U CN 201120341203U CN 202220647 U CN202220647 U CN 202220647U
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- Prior art keywords
- urea
- aqueous solution
- diesel engine
- mixing chamber
- atomization device
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Abstract
A diesel engine SCR high-efficiency atomization device belongs to the technical field of the engine exhaust purification process device. The diesel engine SCR high-efficiency atomization device comprises a mixing chamber; a urea aqueous solution feed port, an air inlet port and a discharge port cooperated with and arranged on the mixing chamber; an electromagnetic nozzle fixed on the urea aqueous solution feed port and used for spraying a urea aqueous solution, an air voltage-stabilization valve connected with a pipeline on the air inlet port and used for stably outputting the air source and an atomization device connected with the pipeline on the discharge port and made of a urea-resistance heat-resistance stainless steel, wherein the bottom of the atomization device is arranged in an exhaust pipe of the outer diesel engine. The diesel engine SCR high-efficiency atomization device has features of simple structure, good atomizing effect, accuracy and high stability.
Description
Technical field
The utility model belongs to engine emission purifying processing device technical field, specifically relates to a kind of diesel engine NO that is used to reduce
xThe urea atomising device of the selective catalytic reduction system operating (Selective Catalyst Reduction) of discharging.
Background technique
Diesel engine has relied on characteristics such as its good power character, Economy and durability since coming out, on various power plant, boats and ships and vehicle, obtained using widely.Particulate matter (PM) and nitrogen oxide (NO to diesel engine
x) two kinds of major pollutants, people adopt the whole bag of tricks to purify.Wherein the SCR technology is to reduce diesel engine NO at present
xA kind of very efficient ways of discharging.The diesel SCR post-processing technology is to utilize aqueous solution of urea to be mapped in the diesel exhaust gas as injection of reducing agent, and under the effect of EGT and air-flow, urea discharges ammonia (NH through pyrolysis and hydrolysis reaction
3), and under uniform temperature and catalyst action, with NO
xBe reduced to nitrogen (N
2) and water (H
2O), reduce NO to reach
xThe purpose of discharging.
The direct injection urea liquid system that adopts at present; Urea electromagnetism nozzle often is directly installed on the outlet pipe; Because the electromagnetism nozzle belongs to electronic unit, the too high meeting of engine exhaust temperature causes the damage of urea electromagnetism nozzle, must cool off urea electromagnetism nozzle.Oneself adopts urea liquid to cool off urea electromagnetism nozzle through disclosed technology; After urea liquid and electromagnetism nozzle and the outlet pipe heat exchange; Temperature must raise; Cause the urea variable density, influence the precision and the accuracy of spraying metering, avoid this influence just need cool off or change injection and measure urea liquid according to the urea variable density.
Urea electromagnetism nozzle often is directly installed on outlet pipe in addition; And the diesel exhaust gas pressure surge is bigger; The effective measures that lack stable urea electromagnetism nozzle preceding pipeline internal pressure ripple in the urea-spray system cause the emitted dose fluctuation of urea big, accuracy and less stable.
The model utility content
To the problem that existing technology exists, the purpose of the utility model is to design the technological scheme that a kind of diesel SCR high-efficiency atomizer is provided.This atomising device is simple in structure, atomizing effect good, accuracy and stable high.
Described a kind of diesel SCR high-efficiency atomizer; It is characterized in that comprising mixing chamber; Be equipped with aqueous solution of urea charging port, air inlet port and discharging port on the described mixing chamber; Fixedly install the electromagnetism nozzle that is used to spray aqueous solution of urea on the described aqueous solution of urea charging port; Described air inlet port upper pipeline connects the air pressure maintaining valve that is used for the stable output of source of the gas, the atomizer that the heat-resistance stainless steel that described discharging port upper pipeline connection is corroded by anti-urea makes, and the bottom of atomizer is arranged in the outlet pipe of outside diesel engine.
Described a kind of diesel SCR high-efficiency atomizer is characterized in that described electromagnetism nozzle is arranged on the top of mixing chamber.
Described a kind of diesel SCR high-efficiency atomizer, the inlet end upper pipeline setting that it is characterized in that described air pressure maintaining valve can realize the air solenoid valve of the opening and closing of source of the gas.
The utility model adopts the auxiliary high-efficient atomizing of realizing aqueous solution of urea of air, through the high-efficient atomizing of simple structure realization aqueous solution of urea, promotes the reliability of SCR system of diesel engine.The utility model is arranged on the electromagnetism nozzle in the mixing chamber, avoids the electromagnetism nozzle to be directly installed on the outlet pipe, avoids high-temperature exhaust air in the outlet pipe to the influence of electromagnetism nozzle, thereby improves the precision and the accuracy of electromagnetism nozzle; On the air inlet port of mixing chamber, the air pressure maintaining valve is set, realizes the voltage stabilizing output of auxiliary air, the difference of the jet pressure of assurance electromagnetism nozzle and the pressure of pipeline is constant, makes the electromagnetism nozzle accurately spray in the situation that does not have pressure surge to disturb.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1-air solenoid valve; 2-air pressure maintaining valve; 3-electromagnetism nozzle; The 4-mixing chamber; The 5-atomizer; The 6-outlet pipe.
Embodiment
Further specify the utility model below in conjunction with Figure of description.
As shown in the figure, a kind of diesel SCR high-efficiency atomizer comprises mixing chamber 4, is equipped with aqueous solution of urea charging port, air inlet port and discharging port on the mixing chamber 4.The aqueous solution of urea charging port of mixing chamber 4 is arranged on the top of mixing chamber 4, and air inlet port and discharging port are arranged on the left and right sides of mixing chamber 4.Fixedly installed electromagnetism nozzle 3 in the aqueous solution of urea charging port of mixing chamber 4, electromagnetism nozzle 3 is used to spray aqueous solution of urea.Air inlet port upper pipeline connects the air pressure maintaining valve 2 that is used for the stable output of source of the gas; Air pressure maintaining valve 2 is realized the voltage stabilizing output of auxiliary air; The difference of the jet pressure of assurance electromagnetism nozzle 3 and the pressure of pipeline is constant, makes electromagnetism nozzle 3 accurately spray in the situation that does not have pressure surge to disturb.The inlet end upper pipeline of air pressure maintaining valve 2 is provided with air solenoid valve 1.Air solenoid valve 1 can be realized the opening and closing of source of the gas.The discharging port upper pipeline of mixing chamber 4 connects atomizer 5, and atomizer 5 is made by the heat-resistance stainless steel of anti-urea corrosion.The bottom of atomizer 5 is arranged in the outlet pipe 6 of outside diesel engine.
During work, electromagnetism nozzle 3 carries out the quantitative injection aqueous solution of urea under the control strategy of controller.The source of the gas that diesel-oil vehicle provides is through air solenoid valve 1 and air pressure maintaining valve 2 back formation pressure-stabilized air source, in mixing chamber 4, fully mixes with quantitative aqueous solution of urea that nozzle 3 sprays into afterwards, and the mixed solution of the two sprays in the outlet pipe 6 through atomizer 5.
And atomizer 5 adopts the heat-resistance stainless steel of anti-urea corrosion to make, and itself has no electronic unit to need not cooling, makes simple and easy reliability height.
Claims (3)
1. diesel SCR high-efficiency atomizer; It is characterized in that comprising mixing chamber (4); Be equipped with aqueous solution of urea charging port, air inlet port and discharging port on the described mixing chamber (4); Fixedly install the electromagnetism nozzle (3) that is used to spray aqueous solution of urea on the described aqueous solution of urea charging port; Described air inlet port upper pipeline connects the air pressure maintaining valve (2) that is used for the stable output of source of the gas, the atomizer (5) that the heat-resistance stainless steel that described discharging port upper pipeline connection is corroded by anti-urea makes, and the bottom of atomizer (5) is arranged in the outlet pipe (6) of outside diesel engine.
2. a kind of diesel SCR high-efficiency atomizer as claimed in claim 1 is characterized in that described electromagnetism nozzle (3) is arranged on the top of mixing chamber (4).
3. a kind of diesel SCR high-efficiency atomizer as claimed in claim 1, the inlet end upper pipeline setting that it is characterized in that described air pressure maintaining valve (2) can realize the air solenoid valve (1) of the opening and closing of source of the gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203412039U CN202220647U (en) | 2011-09-13 | 2011-09-13 | Diesel engine SCR high-efficiency atomization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203412039U CN202220647U (en) | 2011-09-13 | 2011-09-13 | Diesel engine SCR high-efficiency atomization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220647U true CN202220647U (en) | 2012-05-16 |
Family
ID=46042674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203412039U Expired - Lifetime CN202220647U (en) | 2011-09-13 | 2011-09-13 | Diesel engine SCR high-efficiency atomization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764711A (en) * | 2012-07-31 | 2012-11-07 | 周之淮 | Novel air-pressure atomizer |
-
2011
- 2011-09-13 CN CN2011203412039U patent/CN202220647U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102764711A (en) * | 2012-07-31 | 2012-11-07 | 周之淮 | Novel air-pressure atomizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG BONDLYE ENVIRONMENTAL TECHNOLOGY CO., LTD Free format text: FORMER NAME: ZHEJIANG BONDLYE MOTOR ENVIRONMENTAL TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Taizhou City, Zhejiang province 317000 South Street, Jinling Road Yicheng Road intersection City Waterfront Patentee after: ZHEJIANG BONDLYE ENVIRONMENTAL TECHNOLOGY CO., LTD. Address before: 188, long river road, Jiangnan street, Taizhou, Zhejiang, 317025, China Patentee before: Zhejiang Bondlye Motor Environmental Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120516 |