CN206329370U - A kind of urea injector of axially injection - Google Patents
A kind of urea injector of axially injection Download PDFInfo
- Publication number
- CN206329370U CN206329370U CN201621398494.4U CN201621398494U CN206329370U CN 206329370 U CN206329370 U CN 206329370U CN 201621398494 U CN201621398494 U CN 201621398494U CN 206329370 U CN206329370 U CN 206329370U
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- China
- Prior art keywords
- collet
- urea
- injection
- shower nozzle
- urea liquid
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a kind of urea injector of axially injection, it includes urea liquid delivery pipe, shower nozzle and collet, wherein, the shower nozzle is installed on the side wall of the collet, the two ends of the collet are separately installed with positioning disk and cover plate, and the located disk of urea liquid delivery pipe is penetrated to be connected in the collet with the shower nozzle.Original circumferential injection is changed to axial injection by the urea injector of above-mentioned axially injection, along air current flow direction, avoid circumferential injection and the unfavorable angle of exhaust flow direction, urea liquid is enabled to be atomized and be sufficiently mixed with exhaust well, due to the effect of collet in flow process, avoid the high-temperature baking of engine exhaust, good flow field is formed when urea liquid is flowed in injector, made sufficient preparation for atomization, prevent that temperature change from causing the variation and rotten caused injection failure of the spray characteristic of urea liquid.
Description
Technical field
The utility model is related to a kind of urea injector, is used for diesel engine selective catalysis transformation system more particularly, to one kind
The urea injector of the axial direction injection for having gas urea liquid supply pump of system.
Background technology
Refer to install 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 N2And O2Catalytic reduction device, selection urine
The plain aqueous solution is used as reducing agent.Aqueous solution of urea is ejected into the blast pipe 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 by ammonia as reducing agent.
It is at present, existing for there is the urea injector of gas urea liquid supply pump mostly by the way of circumferentially injection,
Had 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 by engine exhaust high-temperature baking, because temperature change causes the spray characteristic of urea liquid
Change and rotten, finally cause injection to be failed.
Utility model content
The purpose of this utility model be provide it is a kind of axially injection urea injector, its have it is simple in construction, be easy to
The characteristics of installation, good urea liquid atomizing effect and reliable and stable work, to solve what urea injector in the prior art was present
Above mentioned problem.
For up to this purpose, the utility model uses following technical scheme：
A kind of urea injector of axially injection, it 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 urea
The located disk of solution conveyor tube is penetrated to be connected in the collet with the shower nozzle.
Especially, it is provided with the shower nozzle on eddy flow block, the side wall of the eddy flow block and offers several whirl holes, institute
State whirl hole and fluid is divided 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 and is spaced to be machined with several planes on cylindrical structure, its side wall, described flat
Diagonally upper correspondence offers whirl hole to the one of which in face.
The beneficial effects of the utility model are that the urea injector of the axially injection will be original compared with prior art
Circumferential injection is changed to axial injection, along air current flow direction, it is to avoid unfavorable angle of the circumferential injection with exhaust flow direction so that
Urea liquid can well be atomized and is sufficiently mixed with exhaust, due to the effect of collet in flow process, it is to avoid
The high-temperature baking of engine exhaust so that good flow field can be formed when urea liquid flows in injector, does for atomization and fills
Divide and prepare, prevent that temperature change from causing the variation and rotten caused injection of the spray characteristic of urea liquid to be failed.
Brief description of the drawings
Fig. 1 is the explosive view of the urea injector for the axial direction injection that the utility model embodiment 1 is provided；
Fig. 2 is the stereochemical structure signal of the urea injector for the axial direction injection that the utility model embodiment 1 is provided
Figure；
Fig. 3 is the profile of the urea injector for the axial direction injection that the utility model embodiment 1 is provided；
Fig. 4 is the structure of the eddy flow block of the urea injector for the axial direction injection that the utility model embodiment 1 is provided
Schematic diagram.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.
Refer to shown in Fig. 1 to Fig. 4, in the present embodiment, it is defeated that a kind of urea injector of axially injection includes urea liquid
Pipe 1, shower nozzle 2 and collet 3 are sent, the shower nozzle 2 is installed on the side wall of the collet 3, and the outer end of the shower nozzle 2 is stretched
Outside the side wall for going out 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
Formed on the cavity of opposing seal, the positioning disk 4 and be provided with alignment pin 6, the located disk 4 of urea liquid delivery pipe 1 is worn
Enter and be connected in the collet 3 with the shower nozzle 2, made the urea liquid delivery pipe 1 in exhaust and the overwhelming majority closing of shower nozzle 2
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, the eddy flow block 8 is overall be on hollow cylindrical structure, its side wall between
Every being machined with several planes 9, 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, pushes fluid out and be sufficiently mixed before shower nozzle so that the atomization of injector and Spray Uniformity
It is increased dramatically.
Above example is to elaborate general principle of the present utility model and characteristic, and the utility model is not by above-mentioned example
Limitation, on the premise of the utility model spirit and scope are not departed from, the utility model also has various change and change, these changes
Change and change and both fall within the range of claimed the utility model.Scope is claimed in the utility model will by appended right
Ask book and its equivalent thereof.
Claims (6)
1. a kind of urea injector of axially injection, it is characterised in that it 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 to be connected in the collet with the shower nozzle.
2. the urea injector of axially injection according to claim 1, it is characterised in that be provided with eddy flow in the shower nozzle
Several whirl holes are offered on block, the side wall of the eddy flow block.
3. the urea injector of axially injection according to claim 1 or 2, it is characterised in that installed on the positioning disk
There is alignment pin.
4. the urea injector of axially injection according to claim 1, it is characterised in that the urea liquid delivery pipe
Outer end is provided with connecting tube.
5. the urea injector of axially injection according to claim 1, it is characterised in that the outer end of the shower nozzle is stretched out
Outside the side wall of the collet.
6. the urea injector of axially injection according to claim 2, it is characterised in that the eddy flow block is in integrally cylinder
Interval is machined with several planes on body structure, its side wall, 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 |
|---|---|---|---|
| CN201621398494.4U CN206329370U (en) | 2016-12-19 | 2016-12-19 | A kind of urea injector of axially injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398494.4U CN206329370U (en) | 2016-12-19 | 2016-12-19 | A kind of urea injector of axially injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206329370U true CN206329370U (en) | 2017-07-14 |
Family
ID=59290321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621398494.4U Active CN206329370U (en) | 2016-12-19 | 2016-12-19 | A kind of urea injector of axially injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206329370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523100A (en) * | 2016-12-19 | 2017-03-22 | 凯龙高科技股份有限公司 | Axial injection urea injector |
| CN111535908A (en) * | 2020-05-29 | 2020-08-14 | 凯龙高科技股份有限公司 | Urea solution atomizer and urea solution injection apparatus |
-
2016
- 2016-12-19 CN CN201621398494.4U patent/CN206329370U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523100A (en) * | 2016-12-19 | 2017-03-22 | 凯龙高科技股份有限公司 | Axial injection urea injector |
| CN111535908A (en) * | 2020-05-29 | 2020-08-14 | 凯龙高科技股份有限公司 | Urea solution atomizer and urea solution injection apparatus |
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