CN105065094B - A kind of cooling fixed device of SCR urea nozzle - Google Patents
A kind of cooling fixed device of SCR urea nozzle Download PDFInfo
- Publication number
- CN105065094B CN105065094B CN201510493180.6A CN201510493180A CN105065094B CN 105065094 B CN105065094 B CN 105065094B CN 201510493180 A CN201510493180 A CN 201510493180A CN 105065094 B CN105065094 B CN 105065094B
- Authority
- CN
- China
- Prior art keywords
- coolant liquid
- nozzle
- mounting base
- liquid water
- cooling
- 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.)
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000004202 carbamide Substances 0.000 title claims abstract description 43
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 239000002826 coolant Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000243 solution Substances 0.000 description 7
- 210000002700 urine Anatomy 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a kind of cooling fixed devices of SCR urea nozzle, including nozzle mounting base, cooling passage inside nozzle mounting base, and set on nozzle mounting base two sides and the coolant liquid water inlet and coolant liquid water outlet that are connected with cooling passage, coolant liquid water inlet and coolant liquid water outlet are respectively communicated with coolant liquid inflow column and coolant liquid effluent column by hollow eyelet bolt, several and the one-to-one nozzle mounting post of urea nozzle base installing hole are vertically equipped in nozzle mounting base；It the advantage is that, urea nozzle temperature is effectively reduced by being set to the cooling passage inside nozzle mounting base, simultaneously using the coolant liquid inflow column and coolant liquid effluent column being connected to cooling passage, make the coolant liquid inside cooling passage in flow regime, further increase cooling effect, so as to guarantee that urea nozzle uses for a long time at a normal temperature, while improving the service life of urea nozzle.
Description
Technical field
The invention belongs to diesel engine vent gas to post-process field, and in particular to a kind of cooling fixed device of SCR urea nozzle.
Background technique
Selective catalytic reduction (SCR) is the technology path for the diesel engine vent gas post-processing that domestic mainstream is approved.SCR refers to
By the NO in the tail gas of diesel engine emissionsxCatalysis is reduced to free of contamination N2And H2The device of O, reducing agent therein are urine
Plain aqueous solution.The aqueous solution of urea being injected in exhaust pipe is hydrolyzed into CO2And NH3, NH3As reducing agent and NOxReaction generates N2
And H2O。
The SCR aftertreatment system mainly with air auxiliary that the country uses at present, only certain external large enterprise are raw
It produces and assists SCR urea injection system without air.No air auxiliary SCR urea injection system does not need air-source, apparatus structure phase
Simpler than in air assist system, this is mainly disappeared by urea box, urea pump, urea nozzle, catalysis without air auxiliary SCR system
Sound device, urea pipe and control unit composition.But due to the high temperature tail of SCR urea nozzle long-time and diesel engine emissions
Gas contact, causes its temperature excessively high, and easy high temperature damage reduces nozzle service life.
Summary of the invention
Object of the present invention is to: one kind is provided and is not only simple in structure, and can be effectively reduced urea nozzle temperature, improves spray
The cooling fixed device of the SCR urea nozzle of mouth service life.
The technical scheme is that a kind of cooling fixed device of SCR urea nozzle, including nozzle mounting base, it is set to institute
State the cooling passage inside nozzle mounting base, and be set to nozzle mounting base two sides and with the cooling passage phase
The coolant liquid water inlet and coolant liquid water outlet of connection, the coolant liquid water inlet and the coolant liquid water outlet pass through hollow work
Section bolt is respectively communicated with coolant liquid inflow column and coolant liquid effluent column, several and urine are vertically equipped in the nozzle mounting base
The plain one-to-one nozzle mounting post of nozzle base mounting hole, while being equipped in the middle part of the nozzle mounting base and being worn for urea nozzle
It crosses and protrudes into the stepped hole in exhaust pipe.
Go out as a preferred technical solution, in the hollow eyelet bolt and the coolant liquid inflow column and the coolant liquid
The junction of water column and the junction of the hollow eyelet bolt and the coolant liquid water inlet and the coolant liquid water outlet
It is equipped with seal washer, sealing effect is improved, coolant liquid is effectively prevent to reveal.
The hollow eyelet bolt is equipped with and the coolant liquid water inlet or the cooling as a preferred technical solution,
The bottom through-hole of liquid water outlet connection, and the side wall being connected to the coolant liquid inflow column or the coolant liquid effluent column are logical
Hole.
It is fast that pipeline is equipped on the coolant liquid inflow column and the coolant liquid effluent column as a preferred technical solution,
Quick coupling.
The nozzle mounting base is hollow cylinder shape mounting base, the coolant liquid water inlet as a preferred technical solution,
It is set on two side plane of hollow cylinder shape mounting base with coolant liquid water outlet.
The nozzle mounting base is equipped with several mounting holes connecting with exhaust pipe as a preferred technical solution, just
In dismounting and change, later maintenance is improved.
Several radiating fins are equipped in the upper surface of the nozzle mounting base and side as a preferred technical solution,
Further increase heat dissipation effect.
The screw thread for installing urea nozzle is equipped in nozzle installation post head as a preferred technical solution,
Hole.
The invention has the advantages that
1. urea nozzle temperature is effectively reduced by being set to the cooling passage inside nozzle mounting base in the present invention, adopt simultaneously
With the coolant liquid inflow column and coolant liquid effluent column being connected to cooling passage, make the coolant liquid inside cooling passage in flowing
State further increases cooling effect, so as to guarantee that urea nozzle uses for a long time at a normal temperature, while improving urine
The service life of plain nozzle.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and embodiments:
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the assembly structure diagram of the present invention with urea nozzle；
Fig. 3 is hollow eyelet bolt structural schematic diagram of the invention；
Wherein: 1 nozzle mounting base, 2 hollow eyelet bolts, 3 coolant liquid inflow columns, 4 coolant liquid effluent columns, 5 urea nozzles
Base installing hole, 6 nozzle mounting posts, 7 urea nozzles, 8 stepped holes, 9 seal washers, 10 bottom through-holes, 11 lateral through aperture, 12 pipes
Road quick coupling, 13 mounting holes, 14 radiating fins.
Specific embodiment
Embodiment: shown in 3, a kind of cooling fixed device of SCR urea nozzle, including nozzle mounting base 1, if
Cooling passage inside nozzle mounting base 1, and be connected set on 1 two sides of nozzle mounting base and with cooling passage
Coolant liquid water inlet and coolant liquid water outlet, coolant liquid water inlet and coolant liquid water outlet are connected respectively by hollow eyelet bolt 2
Logical coolant liquid inflow column 3 and coolant liquid effluent column 4, vertically set that there are three install with urea nozzle pedestal in nozzle mounting base 1
The one-to-one nozzle mounting post 6 in hole 5 is equipped with the threaded hole for installing urea nozzle 7, together in 6 head of nozzle mounting post
When be equipped in the middle part of nozzle mounting base 1 and pass through and protrude into the stepped hole 8 in exhaust pipe for urea nozzle 7, the present invention is by being set to
7 temperature of urea nozzle is effectively reduced in cooling passage inside nozzle mounting base 1, while cold using being connected to cooling passage
But liquid inflow column 3 and coolant liquid effluent column 4 make the coolant liquid inside cooling passage in flow regime, further increase cooling
Effect so as to guarantee that urea nozzle 7 uses for a long time at a normal temperature, while improving the service life of urea nozzle 7.
Referring to Fig.1, shown in 2, company of the present invention in hollow eyelet bolt 2 and coolant liquid inflow column 3 and coolant liquid effluent column 4
The place of connecing and the junction of hollow eyelet bolt 2 and coolant liquid water inlet and coolant liquid water outlet are equipped with seal washer 9, mention
High sealing effect, effectively prevent coolant liquid to reveal.
Referring to shown in Fig. 3, hollow eyelet bolt 2 of the invention is equipped with to be connected with coolant liquid water inlet or coolant liquid water outlet
Logical bottom through-hole 10, and the lateral through aperture 11 being connected to coolant liquid inflow column 3 or coolant liquid effluent column 4, while in cooling
Pipeline fast joint 12 is equipped on liquid inflow column 3 and coolant liquid effluent column 4.
Referring to Fig.1, shown in 2, nozzle mounting base 1 of the invention is hollow cylinder shape mounting base, coolant liquid water inlet and cold
But liquid water outlet is set on two side plane of hollow cylinder shape mounting base, while several and exhaust are equipped in nozzle mounting base 1
The mounting hole 13 of pipe connection, replacement easy to disassemble improve later maintenance.
Referring to Fig.1, shown in 2, the present invention is equipped with several radiating fins 14 in the upper surface of nozzle mounting base 1 and side,
Further increase heat dissipation effect.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (7)
1. a kind of cooling fixed device of SCR urea nozzle, which is characterized in that including nozzle mounting base, be set to the nozzle and install
Cooling passage inside seat, and set on nozzle mounting base two sides and the cooling that is connected with the cooling passage
Liquid water inlet and coolant liquid water outlet, the nozzle mounting base are hollow cylinder shape mounting base, the coolant liquid water inlet and cold
But liquid water outlet is set on two side plane of hollow cylinder shape mounting base；The coolant liquid water inlet and coolant liquid water outlet
Mouth is respectively communicated with coolant liquid inflow column and coolant liquid effluent column by hollow eyelet bolt, vertically sets in the nozzle mounting base
There are several and the one-to-one nozzle mounting post of urea nozzle base installing hole, while being equipped in the middle part of the nozzle mounting base
It is passed through for urea nozzle and protrudes into the stepped hole in exhaust pipe.
2. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that in the hollow movable joint spiral shell
The junction and the hollow eyelet bolt of bolt and the coolant liquid inflow column and the coolant liquid effluent column and the cooling
The junction of liquid water inlet and the coolant liquid water outlet is equipped with seal washer.
3. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that the hollow eyelet bolt
It is equipped with the bottom through-hole being connected to the coolant liquid water inlet or the coolant liquid water outlet, and is intake with the coolant liquid
Column or the lateral through aperture of coolant liquid effluent column connection.
4. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that intake in the coolant liquid
Pipeline fast joint is equipped on column and the coolant liquid effluent column.
5. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that in the nozzle mounting base
The mounting hole being connect equipped with several with exhaust pipe.
6. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that in the nozzle mounting base
Upper surface and side be equipped with several radiating fins.
7. the cooling fixed device of SCR urea nozzle according to claim 1, which is characterized in that in the nozzle mounting post
The threaded hole for installing urea nozzle is equipped in head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493180.6A CN105065094B (en) | 2015-08-12 | 2015-08-12 | A kind of cooling fixed device of SCR urea nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510493180.6A CN105065094B (en) | 2015-08-12 | 2015-08-12 | A kind of cooling fixed device of SCR urea nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065094A CN105065094A (en) | 2015-11-18 |
| CN105065094B true CN105065094B (en) | 2019-01-11 |
Family
ID=54494571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510493180.6A Active CN105065094B (en) | 2015-08-12 | 2015-08-12 | A kind of cooling fixed device of SCR urea nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065094B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007321647A (en) * | 2006-05-31 | 2007-12-13 | Hitachi Ltd | Exhaust gas treatment apparatus for engine |
| CN201874647U (en) * | 2010-11-12 | 2011-06-22 | 无锡市凯龙汽车设备制造有限公司 | SCR (selective catalyst reduction) injecting head of diesel engine |
| DE102012203957A1 (en) * | 2012-03-14 | 2013-09-19 | Robert Bosch Gmbh | Injector |
| CN204402628U (en) * | 2014-10-22 | 2015-06-17 | 张家口百通环保科技有限公司 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
| CN204900032U (en) * | 2015-08-12 | 2015-12-23 | 清华大学苏州汽车研究院（吴江） | SCR urea nozzle cooling fixing device |
-
2015
- 2015-08-12 CN CN201510493180.6A patent/CN105065094B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065094A (en) | 2015-11-18 |
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