CN207093187U - SCR urea injection pipe - Google Patents
SCR urea injection pipe Download PDFInfo
- Publication number
- CN207093187U CN207093187U CN201720864610.5U CN201720864610U CN207093187U CN 207093187 U CN207093187 U CN 207093187U CN 201720864610 U CN201720864610 U CN 201720864610U CN 207093187 U CN207093187 U CN 207093187U
- Authority
- CN
- China
- Prior art keywords
- nozzle
- fan
- sector
- shaped blade
- mixing arrangement
- 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
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000004202 carbamide Substances 0.000 title claims abstract description 28
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000005507 spraying Methods 0.000 abstract description 11
- 239000002912 waste gas Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003595 mist Substances 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- 230000000694 effects Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a SCR urea injection pipe, including spraying body and nozzle, the nozzle set up in on the lateral wall of spraying the body, wherein: still include mixing arrangement, mixing arrangement includes support and the fan-shaped blade of a plurality of, the support mounting in just be located in the injection pipe body the rear of nozzle, a plurality of fan-shaped blade install in on the support, adjacent two be provided with the clearance between the fan-shaped blade, the clearance is used for guiding the mist to change flow direction. The utility model discloses a set up mixing arrangement in the injection body, mixing arrangement includes support and a plurality of fan-shaped blade, and when the waste gas of diesel engine and the mist that nozzle spun urea spraying formed flowed to fan-shaped blade, the clearance between the fan-shaped blade can change the flow direction of mist to can mix waste gas and urea spraying once more, it has improved mixing efficiency, does benefit to the environmental protection.
Description
Technical field
Diesel engine exhaust gas treatment field is the utility model is related to, more particularly to a kind of SCR urea playpipe.
Background technology
SCR spraying systems are in diesel engine post-processing system, are for eliminate oxynitrides in exhaust contaminant
System.Urea solution is generally passed through nozzle by the system, is ejected into playpipe, so that urea solution is sent out with the nitrogen oxides in playpipe
Reduction reaction is given birth to so as to generate ammonia and water.The effect of playpipe in the entire system is most important, and it promotes urea solution with giving up
The mixing of gas, and influence the performance of whole system.Existing urea playpipe is mostly a straight-through long tube, such injection tubular construction
Simply, the inside urea of playpipe is low with waste gas mixability, and mixed effect is poor.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is to provide a kind of SCR urea playpipe, so as to overcome in the prior art in playpipe
Urea solution is low with the mixability of waste gas, the shortcomings that mixed effect difference.
To achieve the above object, the utility model provides a kind of SCR urea playpipe, including injection body and nozzle,
The nozzle is arranged in the side wall of the injection body, wherein：Also include mixing arrangement, the mixing arrangement include support with
And several sectors, the support are installed in the playpipe body and positioned at the rears of the nozzle, described in several
Sector is installed on the support, and gap is provided between adjacent two sectors, and the gap is used to change
Become the flow direction of mixed gas.
Preferably, in above-mentioned technical proposal, several described sector circumference are equally spaced.
Preferably, in above-mentioned technical proposal, the sector is set for even number.
Preferably, in above-mentioned technical proposal, the sector is is obliquely installed, the sector and the playpipe
The angle that the axial line of body is formed is 10 ° to 50 °.
Preferably, in above-mentioned technical proposal, adjacent two sectors are on the cross section of the injection body
Projection section it is overlapping.
Compared with prior art, the utility model has the advantages that：
1st, a kind of SCR urea playpipe of the present utility model, by setting mixing arrangement, mixing arrangement in playpipe body
Positioned at the rear of nozzle, mixing arrangement includes support and several sectors, is sprayed when the waste gas of diesel engine with nozzle
Urea spray the simulation model for mixing gases flows to be formed to sector when, the gap between sector can change the stream of mixed gas
Dynamic direction, so as to again be mixed waste gas with urea spraying, which raises mixing efficiency, reduces oxynitrides
Discharge, beneficial to environmental protection.
2nd, sector of the present utility model is is obliquely installed, and mixed gas i.e. being capable of past fan-shaped leaf when flowing through sector
The incline direction flowing and can of piece is enough to be flowed toward gap direction, so as to further improve waste gas and the mixability of urea spraying.
Brief description of the drawings
Fig. 1 is a kind of structural representation of SCR urea playpipe of the present utility model.
Fig. 2 is the AA sectional views in Fig. 1
Main Reference Numerals explanation：
1- sprays body, 2- nozzles, 3- supports, 31- connecting rods, 4- sectors.
Embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
With reference to figure 1, a kind of SCR urea playpipe, including injection body 1 and nozzle 2, nozzle 2 are arranged at injection body 1
Side wall on, wherein, in addition to mixing arrangement, mixing arrangement includes support 3 and several sectors 4, support 3 are installed on
Spray in body 1 and positioned at the rear of nozzle 2, with reference to figure 2, support 3 includes several connecting rods 31, several connecting rods 31
One end is interconnected on the center of circle of the cross section of injection body 1, and the other end of several connecting rods 31 is with spraying the interior of body 1
Wall is connected, and several connecting rods 31 are radially distributed so as to form support 3.
With reference to figure 2, several sectors 4 are installed in the connecting rod 31 of support 3, adjacent two sectors 4 it
Between be provided with gap, gap is used for the flow direction for changing mixed gas, and gap can be from a sector 4 to another
4 inclined breach of sector, when the mixed gas axially flowed along injection body 1 flow to gap, inclined breach guiding
Mixed gas changes flow direction, so as to which mixed gas is mixed again.The cross-sectional circumferential etc. of sector 4 along injection body 1
Away from distribution, i.e., the connecting rod 31 of even circumferential distribution is selected on support 3, so that sector 4 is installed on into symmetrical connection
On bar 31.Preferably, sector 4 is set for even number, both also allows for making beneficial to uniform force.
With continued reference to Fig. 1 and Fig. 2, to be obliquely installed, sector 4 is formed sector 4 with spraying the axial line of body 1
Angle be 10 ° to 50 °, the incline direction of sector 4 is to be tilted along the flow direction of mixed gas, i.e., towards playpipe
The exhaust end of body 1 tilts；Projection section of the two adjacent sectors 4 on the cross section of injection body 1 is overlapping, i.e., adjacent
Two sectors 4 in closest two side walls be stagger setting, so as to which the gap between two sectors 4 is in V
Shape.When mixed gas flows through sector 4, mixed gas is interfered, inclination of the part mixed gas along sector 4
Flowing upwardly, part mixed gas flows along gap towards direction of axis line, so that mixed gas flow direction changes, so as to
It is enough to be mixed the mixed gas of different flow directions again, improve mixing efficiency.
A kind of operation principle of SCR urea playpipe of the present utility model is that the input of injection body 1 is passed through diesel engine
Waste gas, nozzle 2 spray urea spraying, and waste gas is tentatively mixed to form mixed gas with urea spraying, and mixed gas continues towards mixed
Attach together and put, mixed gas flows through sector 4, and under the flow-disturbing effect of sector 4, the flow direction of mixed gas changes, mixing
Gas is mixed again, improves the transformation efficiency of oxynitrides, so as to reduce because of the oxynitrides distribution in waste gas not
NH_3 leakage caused by uniformly.The utility model transformation efficiency is high, and simple in construction, low manufacture cost.
The foregoing description to specific illustrative embodiment of the present utility model is to illustrate and the purpose of illustration.These
Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explain certain principles of the present utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the present utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (5)
1. a kind of SCR urea playpipe, including injection body and nozzle, the nozzle is arranged at the side wall of the injection body
On, it is characterised in that：Also include mixing arrangement, the mixing arrangement includes support and several sectors, the support
It is installed in the playpipe body and is installed on positioned at the rear of the nozzle, several described sectors on the support,
Gap is provided between two adjacent sectors, the gap is used for the flow direction for changing mixed gas.
2. SCR urea playpipe according to claim 1, it is characterised in that：Several described sector circumference are equidistant
Distribution.
3. SCR urea playpipe according to claim 1, it is characterised in that：The sector is set for even number.
4. SCR urea playpipe according to claim 1, it is characterised in that：The sector is described to be obliquely installed
The angle that the axial line of sector and the injection body is formed is 10 ° to 50 °.
5. SCR urea playpipe according to claim 4, it is characterised in that：Two adjacent sectors are in institute
The projection section stated on the cross section of injection body is overlapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864610.5U CN207093187U (en) | 2017-07-17 | 2017-07-17 | SCR urea injection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720864610.5U CN207093187U (en) | 2017-07-17 | 2017-07-17 | SCR urea injection pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093187U true CN207093187U (en) | 2018-03-13 |
Family
ID=61545336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720864610.5U Expired - Fee Related CN207093187U (en) | 2017-07-17 | 2017-07-17 | SCR urea injection pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093187U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404662A (en) * | 2018-05-15 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of rotary SCR dynamics mixing of aciculiform and accumulatingdust spray nozzle device |
| CN110871032A (en) * | 2018-08-30 | 2020-03-10 | 艾克赛尔能源科技江苏有限公司 | Flue gas denitration device |
-
2017
- 2017-07-17 CN CN201720864610.5U patent/CN207093187U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404662A (en) * | 2018-05-15 | 2018-08-17 | 大唐环境产业集团股份有限公司 | A kind of rotary SCR dynamics mixing of aciculiform and accumulatingdust spray nozzle device |
| CN108404662B (en) * | 2018-05-15 | 2024-06-04 | 大唐环境产业集团股份有限公司 | Needle-shaped rotary SCR dynamic mixing and ash deposition preventing nozzle device |
| CN110871032A (en) * | 2018-08-30 | 2020-03-10 | 艾克赛尔能源科技江苏有限公司 | Flue gas denitration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |