CN202250315U - Diesel engine SCR (Semiconductor Control Rectifier) atomizer for air assistant manner - Google Patents
Diesel engine SCR (Semiconductor Control Rectifier) atomizer for air assistant manner Download PDFInfo
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- CN202250315U CN202250315U CN2011203198745U CN201120319874U CN202250315U CN 202250315 U CN202250315 U CN 202250315U CN 2011203198745 U CN2011203198745 U CN 2011203198745U CN 201120319874 U CN201120319874 U CN 201120319874U CN 202250315 U CN202250315 U CN 202250315U
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- atomizer
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- diesel engine
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Abstract
The utility model discloses a diesel engine SCR (Semiconductor Control Rectifier) atomizer for an air assistant manner, belonging to the technical field of diesel engine atomization devices. The diesel engine SCR atomizer for the air assistant manner comprises a hollow pipeline; the top end of the pipeline is connected with a pipe joint which is connected with an external device while the tail end of the pipeline is connected with a sprayer which is provided with a spray orifice; and a heat insulation shell which is used for heat insulation is sheathed on a body of the pipeline. The diesel engine SCR atomizer for the air assistant manner is simple in structure and reasonable in design and has the effects of changing the structures of electronic nozzles in atomizers in the prior art, realizing the efficient atomization of urea solution by means of a simple mechanical structure and enhancing the conversion efficiency of NOx. Compared with the existing electronic nozzles, the diesel engine SCR atomizer for the air assistant manner is capable of reducing the cost by more than 50% and improving the conversion efficiency of NOx by more than 10% and is temperature-resistant and high in reliability.
Description
Technical field
The utility model belongs to diesel engine atomising device technical field, is specifically related to a kind of diesel SCR atomizer that is used for the air supplementary mode.
Background technique
The SCR technology is to have become large diesel engine to satisfy state four emission standards reduction NO at present
xA kind of mainstream technology of discharging.The diesel SCR 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.
For aqueous solution of urea is sprayed in the diesel exhaust gas; Often adopt the direct injection method; Soon urea electromagnetism nozzle is directly installed on the outlet pipe and sprays; 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.Adopt the aqueous solution of urea atomizing effect of this mode not ideal enough in addition at present, influenced NO
xTransformation efficiency.
For improving the atomizing effect of aqueous solution of urea, after present trend is the air mixing with aqueous solution of urea and high pressure, spray in the diesel exhaust gas through mechanical atomizer again.The structure of atomizer becomes one of principal element that influences the aqueous solution of urea atomizing effect when adopting this mode.
The model utility content
To the problem that existing technology exists, the purpose of the utility model is to design provides a kind of technological scheme that is used for the diesel SCR atomizer of air supplementary mode, and this diesel SCR atomizer structure is simple, and cost of production is low and improved NO
xTransformation efficiency.
Described a kind of diesel SCR atomizer that is used for the air supplementary mode; It is characterized in that comprising the pipeline of hollow; Described pipeline top connects and to be provided for the pipe joint that is connected with external means; The pipeline tail end connects the shower nozzle that is provided with spray orifice, and socket is provided for heat insulation heat-insulating housing on the pipe shaft of pipeline.
Described a kind of diesel SCR atomizer that is used for the air supplementary mode is characterized in that described heat-insulating housing is a funnel structure, and the heat-insulating housing lower end is fixedly connected with pipeline outer wall, and its upper end constitutes heat insulation cavity through the contiguous block sealing that is provided with.
Described a kind of diesel SCR atomizer that is used for the air supplementary mode is characterized in that fixedly installing on the described heat-insulating housing locating stud that is used to locate spray orifice.
Described a kind of diesel SCR atomizer that is used for the air supplementary mode is characterized in that on the side of described shower nozzle one group of spray orifice being set.
Described a kind of diesel SCR atomizer that is used for the air supplementary mode, the diameter that it is characterized in that described spray orifice is 0.3～0.7mm.
Above-mentioned a kind of diesel SCR atomizer that is used for the air supplementary mode, simple in structure, reasonable in design, electromagnetism structure of nozzle in the atomizer in the change existing technology, the high-efficient atomizing through simple mechanical structure combination realization aqueous solution of urea promotes NO
xTransformation efficiency.Compare with existing electromagnetism nozzle, the utility model cost reduces more than 50%, NO
xTransformation efficiency improve more than 10%, high temperature resistant, reliability is high.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structure sectional view of the utility model.
Among the figure: the 1-pipe joint; The 2-pipeline; The 3-contiguous block; The 4-locating stud; The 5-heat-insulating housing; The heat insulation cavity of 501-; The 6-shower nozzle; The 601-spray orifice.
Embodiment
Further specify the utility model below in conjunction with Figure of description.
As shown in the figure; A kind of diesel SCR atomizer that is used for the air supplementary mode comprises the pipeline 2 of hollow, and the top of pipeline 2 is fixedly connected pipe joint 1, and pipe joint 1 meets SAE J2044-2002 standard; Can adopt rapid pipe joint to connect fast with it, be convenient to atomizer and be connected with external means.The tail end of pipeline 2 is fixedly connected shower nozzle 6.One group of spray orifice 601 is set on the side of shower nozzle 6, and the diameter of spray orifice 601 is 0.3～0.7mm, for reaching atomizing effect and promoting NO
xThe most preferred mode of transformation efficiency 3 spray orifices 601 are set on the side of shower nozzle 6, the diameter of spray orifice 601 is 0.5mm.
Socket is provided for heat insulation heat-insulating housing 5 on the pipe shaft of pipeline 2, and heat-insulating housing 5 is the up big and down small funnel structure of funnel structure.Heat-insulating housing 5 lower ends are fixedly connected with pipeline 2 outer walls, and its upper end constitutes heat insulation cavity 501 through contiguous block 3 sealings that are provided with.The setting of heat-insulating housing 5 prevents that the high temperature pair plastic device that is connected with atomizer of diesel exhaust gas from causing adverse effect.
And fixedly install locating stud 4 in the upper end of heat-insulating housing 5, locating stud 4 is in same straight line with spray orifice 601.Locating stud 4 mainly is used to locate spray orifice 601, guarantee that this atomizer installs after, the injection direction of spray orifice 601 is consistent with the diesel exhaust gas airflow direction, helps the diffusion of aqueous solution of urea.
After the air mixing of aqueous solution of urea and high pressure, spray in the diesel engine vent gas, realize NO through pipe joint 1, pipeline 2 and shower nozzle 6
xConversion.
The whole parts of atomizer all adopt the heat-resistance stainless steel of anti-urea corrosion in the utility model, and the Placement between the parts adopts vacuum brazing, prevent that weld seam from causing adverse effect to flowing.This atomizer is a full mechanical simultaneously, has no electronic unit and need not cooling, and high temperature resistant reliability is high.
Claims (5)
1. diesel SCR atomizer that is used for the air supplementary mode; It is characterized in that comprising the pipeline (2) of hollow; Described pipeline (2) top connects and to be provided for the pipe joint (1) that is connected with external means; Pipeline (2) tail end connects the shower nozzle (6) that is provided with spray orifice (601), and socket is provided for heat insulation heat-insulating housing (5) on the pipe shaft of pipeline (2).
2. a kind of diesel SCR atomizer that is used for the air supplementary mode as claimed in claim 1; It is characterized in that described heat-insulating housing (5) is a funnel structure; Heat-insulating housing (5) lower end is fixedly connected with pipeline (2) outer wall, and its upper end constitutes heat insulation cavity (501) through contiguous block (3) sealing that is provided with.
3. a kind of diesel SCR atomizer that is used for the air supplementary mode as claimed in claim 1 is characterized in that fixedly installing on the described heat-insulating housing (5) locating stud (4) that is used to locate spray orifice (601).
4. a kind of diesel SCR atomizer that is used for the air supplementary mode as claimed in claim 1 is characterized in that on the side of described shower nozzle (6) one group of spray orifice (601) being set.
5. a kind of diesel SCR atomizer that is used for the air supplementary mode as claimed in claim 4, the diameter that it is characterized in that described spray orifice (601) is 0.3～0.7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203198745U CN202250315U (en) | 2011-08-30 | 2011-08-30 | Diesel engine SCR (Semiconductor Control Rectifier) atomizer for air assistant manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203198745U CN202250315U (en) | 2011-08-30 | 2011-08-30 | Diesel engine SCR (Semiconductor Control Rectifier) atomizer for air assistant manner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250315U true CN202250315U (en) | 2012-05-30 |
Family
ID=46111572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203198745U Expired - Lifetime CN202250315U (en) | 2011-08-30 | 2011-08-30 | Diesel engine SCR (Semiconductor Control Rectifier) atomizer for air assistant manner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250315U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748105A (en) * | 2012-07-03 | 2012-10-24 | 安徽艾可蓝节能环保科技有限公司 | Urea nozzle of SCR (Selective Catalytic Reduction) system and mounting structure of urea nozzle |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea spray nozzle assembly for automobile internal combustion engine |
| CN104948276A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea ejector |
-
2011
- 2011-08-30 CN CN2011203198745U patent/CN202250315U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748105A (en) * | 2012-07-03 | 2012-10-24 | 安徽艾可蓝节能环保科技有限公司 | Urea nozzle of SCR (Selective Catalytic Reduction) system and mounting structure of urea nozzle |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea spray nozzle assembly for automobile internal combustion engine |
| CN104948276A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea ejector |
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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: 20120530 |