CN203570398U - Static mixer for diesel engine SCR - Google Patents
Static mixer for diesel engine SCR Download PDFInfo
- Publication number
- CN203570398U CN203570398U CN201320630281.XU CN201320630281U CN203570398U CN 203570398 U CN203570398 U CN 203570398U CN 201320630281 U CN201320630281 U CN 201320630281U CN 203570398 U CN203570398 U CN 203570398U
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- CN
- China
- Prior art keywords
- static mixer
- mixer
- stereotyped
- dull
- pipe body
- 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.)
- Expired - Fee Related
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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
Abstract
The utility model relates to a static mixer for a diesel engine SCR. The static mixer is connected with an exhaust pipe and a tail gas pipe. The static mixer comprises an S-shaped pipe body and a panel mixer body. One end of the S-shaped pipe body is connected with the exhaust pipe. The other end of the S-shaped pipe body is connected with one end of the panel mixer body through a flange. The other end of the panel mixer body is connected with the tail gas pipe through a flange. The panel mixer body is of a round panel provided with a hollow circle concentric with the round panel. A plurality of fan-shaped holes are uniformly formed around the hollow circle and connected with fins. The fins are arranged on one side of the round panel, and a certain included angle is formed between the fins and the round panel. Compared with the prior art, the static mixer is simple in structure, gas-liquid disturbance can be increased, gas and liquid are mixed uniformly, exhaust back pressure can be lowered, the great pressure drop can not be caused, and the static mixer is high in practical industry value.
Description
Technical field
The utility model relates to automobile exhaust system field, especially relates to a kind of static mixer for diesel SCR.
Background technique
At present, the NO of the former machine of diesel engine
xdischarge is difficult to reach discharging standards, and therefore various tail-gas after treatment apparatus just arise at the historic moment.Solve NO
xdischarge is urea selective catalytic reduction device (SCR) the most commonly, still, does not add the SCR catalyst converter NO of mixer
xtransformation efficiency is still lower, becomes a kind of effective mode that SCR catalyst converter increases transformation efficiency adding of mixer for this reason, and mixer makes aqueous solution of urea and tail gas can access sufficient mixing before entering SCR catalyst converter, and then reduces NO
xdischarge amount.But, to arrange mixer conventionally and reduce exhaust resistance to contradict, i.e. the setting of mixer is more, and the exhaust back pressure of vent systems is just larger, and corresponding effective engine power consume is also just more.And if do not adopt certain mixer, can not make urea and tail gas fully mix before entering SCR catalyst converter, reach and significantly reduce NO
xobject.
Model utility content
The purpose of this utility model is exactly to provide a kind of static mixer for diesel SCR in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of static mixer for diesel SCR, be connected with offgas duct with outlet pipe respectively, it is characterized in that, this static mixer comprises S-shaped pipe body and dull and stereotyped mixer, described S-shaped pipe body one end is connected with outlet pipe, the described S-shaped pipe body the other end is connected with dull and stereotyped mixer one end by flange, the described dull and stereotyped mixer the other end is connected with offgas duct by flange, described dull and stereotyped mixer is a circular flat board, on circular flat board, be provided with and circular dull and stereotyped concentric open circles, around open circles, be evenly provided with a plurality of fan shaped boreholes, in described fan shaped borehole, be connected with fin, described fin is all located at a circular dull and stereotyped side, and be certain angle with circular flat board.
In the middle of described open circles, be provided with a horizontal stripe, this horizontal stripe length is consistent with open circles diameter.
Described S-shaped pipe body is provided with nozzle mounting hole and nozzle, and described nozzle inserts in nozzle mounting hole, and its lower end is located on the central axis of offgas duct.
Described fan shaped borehole is provided with 3 to 5.
Described fin and circular dull and stereotyped angle are that 45 degree are to 70 degree.
Described fan shaped borehole is preferably 5.
Described fin and circular dull and stereotyped angle are preferably 60 degree.
The shape size of described fin is consistent with fan shaped borehole.
Described S-shaped pipe body is formed by connecting by two sections of identical circular arc bodys of diameter, and described circular arc pipe diameter is consistent with described outlet pipe internal diameter.
Compared with prior art, the utility model is arranged on nozzle on S-shaped pipe body, and before urea droplets enters offgas duct, the particular design of S-shaped pipe body can increase the disturbance of tail gas and urea droplets; Dull and stereotyped mixer adopts fan-shaped fin, and multi-disc fin and flat board at an angle, make gas-liquid in exhaust pipe, form eddy current, increases disturbance; And the horizontal stripe in dull and stereotyped mixer open circles also can increase gas-liquid disturbance; Meanwhile, dull and stereotyped mixer center by open circles and a plurality of fan-shaped large circle forming, can reduce exhaust back pressure, reach and can make the urea of nozzle ejection and tail gas be mixed fully, can not produce again the object of very large pressure drop.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is plan view of the present utility model;
Fig. 3 is the dull and stereotyped mixer structure schematic diagram of the utility model;
Fig. 4 is the side view of the dull and stereotyped mixer of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of static mixer for diesel SCR, be connected with offgas duct 1 with outlet pipe respectively, it is characterized in that, this static mixer comprises S-shaped pipe body 2 and dull and stereotyped mixer 4, described S-shaped pipe body 2 one end are connected with outlet pipe, and described S-shaped pipe body 2 the other ends are connected with dull and stereotyped mixer 4 one end by flange 3, and described dull and stereotyped mixer 4 the other ends are connected with offgas duct 1 by flange 3; Described S-shaped pipe body 2 is formed by connecting by two sections of identical circular arc bodys of diameter, described circular arc pipe diameter is consistent with described outlet pipe internal diameter, as shown in Figure 2, described S-shaped pipe body is provided with nozzle mounting hole 21 and nozzle, described nozzle inserts in nozzle mounting hole 21, and its lower end is located on the central axis of offgas duct; As shown in Figure 3-4, described dull and stereotyped mixer 4 is a circular flat board, on circular flat board, be provided with an open circles 41 concentric with circular flat board, in the middle of described open circles 41, be provided with a horizontal stripe 42, these horizontal stripe 42 length are consistent with open circles 41 diameters, around open circles 41, be evenly provided with 5 fan shaped boreholes 43, in described fan shaped borehole 43, be connected with fin 44, the shape size of described fin 44 is consistent with fan shaped borehole 43, described fin 44 is all located at a circular dull and stereotyped side, and is the angle of 60 degree with circular flat board.
During work, tail gas gas enters S-shaped pipe body via outlet pipe, nozzle ejection urea droplets enters S-shaped pipe body, the particular design of S-shaped pipe body increases the disturbance of tail gas and urea droplets, gas-liquid is through the disturbance of horizontal stripe and a plurality of fins afterwards, a plurality of fan shaped boreholes by dull and stereotyped mixer after mixing enter in offgas duct, and then enter in diesel SCR.Compared with prior art, the utility model is simple in structure, not only can increase gas-liquid disturbance, makes gas-liquid mixed even, and can reduce exhaust back pressure, can not produce very large pressure drop, extremely has industrial utility value.
Claims (9)
1. the static mixer for diesel SCR, be connected with offgas duct with outlet pipe respectively, it is characterized in that, this static mixer comprises S-shaped pipe body and dull and stereotyped mixer, described S-shaped pipe body one end is connected with outlet pipe, the described S-shaped pipe body the other end is connected with dull and stereotyped mixer one end by flange, the described dull and stereotyped mixer the other end is connected with offgas duct by flange, described dull and stereotyped mixer is a circular flat board, on circular flat board, be provided with and circular dull and stereotyped concentric open circles, around open circles, be evenly provided with a plurality of fan shaped boreholes, in described fan shaped borehole, be connected with fin, described fin is all located at a circular dull and stereotyped side, and be certain angle with circular flat board.
2. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, in the middle of described open circles, is provided with a horizontal stripe, and this horizontal stripe length is consistent with open circles diameter.
3. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, described S-shaped pipe body is provided with nozzle mounting hole and nozzle, and described nozzle inserts in nozzle mounting hole, and its lower end is located on the central axis of offgas duct.
4. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, described fan shaped borehole is provided with 3 to 5.
5. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, described fin and circular dull and stereotyped angle are that 45 degree are to 70 degree.
6. a kind of static mixer for diesel SCR according to claim 4, is characterized in that, described fan shaped borehole is preferably 5.
7. a kind of static mixer for diesel SCR according to claim 5, is characterized in that, described fin and circular dull and stereotyped angle are preferably 60 degree.
8. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, the shape size of described fin is consistent with fan shaped borehole.
9. a kind of static mixer for diesel SCR according to claim 1, is characterized in that, described S-shaped pipe body is formed by connecting by two sections of identical circular arc bodys of diameter, and described circular arc pipe diameter is consistent with described outlet pipe internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630281.XU CN203570398U (en) | 2013-10-12 | 2013-10-12 | Static mixer for diesel engine SCR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630281.XU CN203570398U (en) | 2013-10-12 | 2013-10-12 | Static mixer for diesel engine SCR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203570398U true CN203570398U (en) | 2014-04-30 |
Family
ID=50538132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320630281.XU Expired - Fee Related CN203570398U (en) | 2013-10-12 | 2013-10-12 | Static mixer for diesel engine SCR |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203570398U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344921A (en) * | 2018-04-03 | 2019-10-18 | 埃贝斯佩歇排气技术有限责任两合公司 | Exhaust equipment and mixer assembly for exhaust equipment |
-
2013
- 2013-10-12 CN CN201320630281.XU patent/CN203570398U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344921A (en) * | 2018-04-03 | 2019-10-18 | 埃贝斯佩歇排气技术有限责任两合公司 | Exhaust equipment and mixer assembly for exhaust equipment |
| CN110344921B (en) * | 2018-04-03 | 2021-11-26 | 普瑞姆有限公司 | Exhaust device and mixer assembly for an exhaust device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20171012 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |