CN106523100A - Axial injection urea injector - Google Patents
Axial injection urea injector Download PDFInfo
- Publication number
- CN106523100A CN106523100A CN201611180515.XA CN201611180515A CN106523100A CN 106523100 A CN106523100 A CN 106523100A CN 201611180515 A CN201611180515 A CN 201611180515A CN 106523100 A CN106523100 A CN 106523100A
- Authority
- CN
- China
- Prior art keywords
- urea
- injection
- injector
- collet
- urea injector
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an axial injection urea injector which comprises a urea solution conveying pipe, a spray head and a heat insulation sleeve. The spray head is mounted on the side wall of the heat insulation sleeve. A locating disc and a cover plate are mounted at the two ends of the heat insulation sleeve correspondingly. The urea solution conveying pipe penetrates into the heat insulation sleeve through the locating disc to be connected with the spray head. According to the axial injection urea injector, original circumferential injection is changed into axial injection, in the airflow flowing direction, the disadvantage included angles of circumferential injection and the exhausted air flowing direction are avoided, and a urea solution can be atomized well and is fully mixed with exhausted air; and in the flowing process, due to the function of the heat insulation sleeve, high-temperature baking of the exhausted air of an engine is avoided, a good flow field can be formed when the urea solution flows in the injector, full preparation is made for atomization, and urea solution injection character changing caused by temperature changing and injection failures caused by modification are avoided.
Description
Technical field
The present invention relates to a kind of urea injector, more particularly, to a kind of for selective catalytic conversion system of diesel engine
There is the urea injector of the axial direction injection of gas urea liquid supply pump.
Background technology
Installation is referred to for selective catalytic conversion system of diesel engine SCR (Selective Catalyst Reduction)
In diesel engine automobile air exhausting system, the NOx in diesel emission is catalysed and reduced into into N2And O2Catalytic reduction device, select urine
Plain aqueous solution is used as reducing agent.Aqueous solution of urea is ejected in the exhaustor of catalyst upstream, in EGT and the work of air-flow
CO is produced as with lower hydrolysis2And ammonia, NOx is reduced into free of contamination nitrogen and water as reducing agent by ammonia.
At present, it is existing for have gas urea liquid supply pump urea injector mostly by the way of circumferential injection,
Have the disadvantage that during specific use：
1) there is unfavorable angle with engine exhaust flow direction, urea liquid atomizing effect is poor；
2) urea liquid is subject to the high-temperature baking of engine exhaust, because temperature change causes the spray characteristic of urea liquid
Change and rotten, finally cause injection failure.
The content of the invention
It is an object of the invention to provide a kind of urea injector of axially injection, its have simple structure, be easily installed,
Urea liquid atomizing effect is good and the characteristics of reliable and stable work, above-mentioned being asked with solve that urea injector in prior art is present
Topic.
It is that, up to this purpose, the present invention is employed the following technical solutions：
A kind of urea injector of axially injection, which includes urea liquid delivery pipe, shower nozzle and collet, wherein, it is described
Shower nozzle is installed on the side wall of the collet, and the two ends of the collet are separately installed with positioning disk and cover plate, the carbamide
The located disk of solution conveyor tube is penetrated and is connected with the shower nozzle in the collet.
Especially, eddy flow block is installed in the shower nozzle, several whirl holes, institute on the side wall of the eddy flow block, is offered
State whirl hole and fluid is divided into into some, and eddy flow is formed when converging.
Especially, alignment pin is installed on the positioning disk.
Especially, the outer end of the urea liquid delivery pipe is provided with connecting tube.
Especially, the outer end of the shower nozzle is stretched out outside the side wall of the collet.
Especially, the eddy flow block is in integrally cylindrical structure, and on its side wall, interval is machined with several planes, described flat
Diagonally upper correspondence offers whirl hole to the one of which in face.
Beneficial effects of the present invention are, the urea injector of the axially injection is by original circumference compared with prior art
Injection is changed to axial injection, along air current flow direction, it is to avoid the unfavorable angle of circumferential injection and aerofluxuss flow direction so that carbamide
Solution can be atomized well and is sufficiently mixed with aerofluxuss, due to the effect of collet in flow process, it is to avoid start
The high-temperature baking of machine aerofluxuss so that good flow field can be formed when urea liquid flows in ejector, is that abundant standard is done in atomization
It is standby, prevent temperature change from causing the variation of the spray characteristic of urea liquid and the rotten injection failure for causing.
Description of the drawings
Fig. 1 is the explosive view of the urea injector of the axial direction injection that the specific embodiment of the invention 1 is provided；
Fig. 2 is the dimensional structure diagram of the urea injector of the axial direction injection that the specific embodiment of the invention 1 is provided；
Fig. 3 is the profile of the urea injector of the axial direction injection that the specific embodiment of the invention 1 is provided；
Fig. 4 is the structural representation of the eddy flow block of the urea injector of the axial direction injection that the specific embodiment of the invention 1 is provided
Figure.
Specific embodiment
Technical scheme is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
Refer to shown in Fig. 1 to Fig. 4, in the present embodiment, a kind of urea injector of axially injection includes that urea liquid is defeated
Send pipe 1, shower nozzle 2 and collet 3, the shower nozzle 2 to be installed on the side wall of the collet 3, and the outer end of the shower nozzle 2 is stretched
Go out outside the side wall of the collet 3.The two ends of the collet 3 are separately installed with positioning disk 4 and cover plate 5, so that in collet 3
The cavity of opposing seal is formed, alignment pin 6 on the positioning disk 4, is provided with, 1 located disk 4 of the urea liquid delivery pipe is worn
Enter and be connected with the shower nozzle 2 in the collet 3, make 2 overwhelming majority closing of the urea liquid delivery pipe 1 in aerofluxuss and shower nozzle
In cavity.The outer end of the urea liquid delivery pipe 1 is provided with connecting tube 7.
Eddy flow block 8 is installed in the shower nozzle 2, it is in hollow cylindrical structure that the eddy flow block 8 is overall, on its side wall between
Every several planes 9 are machined with, diagonally upper correspondence offers whirl hole 10, the setting of eddy flow block 8 to the one of which of the plane 9
Flow behavior can be effectively improved, be sufficiently mixed before pushing fluid out shower nozzle so that the atomization of ejector and Spray Uniformity
It is increased dramatically.
Above example simply elaborates the ultimate principle and characteristic of the present invention, and the present invention is not limited by above-mentioned example,
Without departing from the spirit and scope, the present invention also has various change and change, and these changes and change both fall within
In scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent thereof.
Claims (6)
1. the urea injector that a kind of axial direction is sprayed, it is characterised in which includes urea liquid delivery pipe, shower nozzle and collet,
The shower nozzle is installed on the side wall of the collet, and the two ends of the collet are separately installed with positioning disk and cover plate, described
The located disk of urea liquid delivery pipe is penetrated and is connected with the shower nozzle in the collet.
2. the urea injector that axial direction according to claim 1 is sprayed, it is characterised in that be provided with eddy flow in the shower nozzle
Block, offers several whirl holes on the side wall of the eddy flow block.
3. the urea injector that axial direction according to claim 1 and 2 is sprayed, it is characterised in that install on the positioning disk
There is alignment pin.
4. the urea injector that axial direction according to claim 1 is sprayed, it is characterised in that the urea liquid delivery pipe
Outer end is provided with connecting tube.
5. the urea injector that axial direction according to claim 1 is sprayed, it is characterised in that stretch out the outer end of the shower nozzle
Outside the side wall of the collet.
6. the urea injector that axial direction according to claim 2 is sprayed, it is characterised in that the eddy flow block is in integrally cylinder
Body structure, on its side wall, interval is machined with several planes, and diagonally upper correspondence offers whirl hole to the one of which of the plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180515.XA CN106523100A (en) | 2016-12-19 | 2016-12-19 | Axial injection urea injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180515.XA CN106523100A (en) | 2016-12-19 | 2016-12-19 | Axial injection urea injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523100A true CN106523100A (en) | 2017-03-22 |
Family
ID=58339761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611180515.XA Pending CN106523100A (en) | 2016-12-19 | 2016-12-19 | Axial injection urea injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178411A (en) * | 2017-06-29 | 2017-09-19 | 杭州银轮科技有限公司 | Retractable gas helps formula urea nozzle |
| CN115653733A (en) * | 2022-11-14 | 2023-01-31 | 烟台鲁吉汽车科技有限公司 | High-speed anti-blocking urea solution spraying and injecting device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202238363U (en) * | 2011-09-19 | 2012-05-30 | 苏州派格力减排系统有限公司 | Atomizing nozzle for reducing agent in SCR (Selective Catalytic Reduction) system |
| CN102836792A (en) * | 2011-06-20 | 2012-12-26 | 杭州银轮科技有限公司 | Spray nozzle for post-treatment urea SCR (Silicon Controlled Rectifier) system of diesel engine |
| US20140363357A1 (en) * | 2013-06-06 | 2014-12-11 | Cummins Emission Solutions Inc. | Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems |
| CN104564473A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Ejector assembly |
| CN204572141U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | Automobile SCR system new urea spray nozzle device |
| CN105386831A (en) * | 2015-12-10 | 2016-03-09 | 广西玉柴机器股份有限公司 | Nozzle in marine engine tail gas treatment system |
| CN205422892U (en) * | 2015-08-23 | 2016-08-03 | 浙江福爱电子有限公司 | Engine aftertreatment SCR system of SCR reductant nozzle and applied this reductant nozzle |
| CN206329370U (en) * | 2016-12-19 | 2017-07-14 | 凯龙高科技股份有限公司 | A kind of urea injector of axially injection |
-
2016
- 2016-12-19 CN CN201611180515.XA patent/CN106523100A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836792A (en) * | 2011-06-20 | 2012-12-26 | 杭州银轮科技有限公司 | Spray nozzle for post-treatment urea SCR (Silicon Controlled Rectifier) system of diesel engine |
| CN202238363U (en) * | 2011-09-19 | 2012-05-30 | 苏州派格力减排系统有限公司 | Atomizing nozzle for reducing agent in SCR (Selective Catalytic Reduction) system |
| US20140363357A1 (en) * | 2013-06-06 | 2014-12-11 | Cummins Emission Solutions Inc. | Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems |
| CN104564473A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Ejector assembly |
| CN204572141U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | Automobile SCR system new urea spray nozzle device |
| CN205422892U (en) * | 2015-08-23 | 2016-08-03 | 浙江福爱电子有限公司 | Engine aftertreatment SCR system of SCR reductant nozzle and applied this reductant nozzle |
| CN105386831A (en) * | 2015-12-10 | 2016-03-09 | 广西玉柴机器股份有限公司 | Nozzle in marine engine tail gas treatment system |
| CN206329370U (en) * | 2016-12-19 | 2017-07-14 | 凯龙高科技股份有限公司 | A kind of urea injector of axially injection |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178411A (en) * | 2017-06-29 | 2017-09-19 | 杭州银轮科技有限公司 | Retractable gas helps formula urea nozzle |
| CN107178411B (en) * | 2017-06-29 | 2023-09-08 | 杭州银轮科技有限公司 | Freely telescopic air-assisted urea nozzle |
| CN115653733A (en) * | 2022-11-14 | 2023-01-31 | 烟台鲁吉汽车科技有限公司 | High-speed anti-blocking urea solution spraying and injecting device |
| CN115653733B (en) * | 2022-11-14 | 2023-04-04 | 烟台鲁吉汽车科技有限公司 | High-speed anti-blocking urea solution spraying and spraying device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |