CN203856552U - Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck - Google Patents
Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck Download PDFInfo
- Publication number
- CN203856552U CN203856552U CN201420264053.XU CN201420264053U CN203856552U CN 203856552 U CN203856552 U CN 203856552U CN 201420264053 U CN201420264053 U CN 201420264053U CN 203856552 U CN203856552 U CN 203856552U
- Authority
- CN
- China
- Prior art keywords
- urea
- urea nozzle
- nozzle support
- catalytic
- mounting structure
- 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 83
- 239000004202 carbamide Substances 0.000 title claims abstract description 83
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract description 5
- 238000010899 nucleation Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 14
- 238000002425 crystallisation Methods 0.000 abstract 2
- 230000008025 crystallization Effects 0.000 abstract 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model provides a urea nozzle support mounting structure for a urea catalytic-reduction system of a heavy truck in order to solve the problems that utilization rate of urea is instable, urea crystallization may cause and urea solution possibly leaks from joints and the like. The technical scheme includes that a urea nozzle support is fixedly mounted on a gas-inlet connecting pipe on an SCR (selective catalytic reduction) tank, and a urea nozzle is fixedly mounted on the urea nozzle support. The urea nozzle support mounting structure for the urea catalytic-reduction system of the heavy truck has the advantages that consistency and stability of the distance from the injection point of the urea nozzle to the center of a gas inlet end of a catalyzer in the SCR tank are guaranteed, no affection is caused by assembly errors and driving vibrations, utilization rate of urea is effectively guaranteed, and urea crystallization and leakage are effectively prevented.
Description
Invention field
The utility model relates to the mounting technique of heavy-duty car urea seeding restoring system urea nozzle bearing, specially refers to a kind of heavy-duty car urea seeding restoring system urea nozzle and props up seat installation structure.
Background technique
Conventionally, heavy-duty car adopts diesel engine as power source.And the Nox(nitrogen oxide of diesel engine emissions) and PM(particulate matter) far above petrol engine, and cannot as petrol engine, use three-way catalyst and reach state's IV effluent standard.For making the discharge of heavy-duty car diesel engine reach state's IV standard, the urea liquid (ADBLE) that conventionally adopts technology (SCR, the Selective Catalytic Reduction) utilization of urea seeding reduction to have high reducibility reduces the discharge of NOx.So-called urea seeding restoring system generally includes urea seeding reduction casing SCR and is arranged on the catalyst converter in SCR casing, is provided with inlet pipe connection and the connecting tube of giving vent to anger on SCR casing.The outlet pipe of diesel engine inserts in the inlet pipe connection on SCR casing and adopts clip to be fixedly connected with, and the connecting tube of giving vent to anger on SCR casing is connected with automobile exhaust pipe.The waste gas that diesel engine is discharged enters SCR casing by inlet pipe connection, under the acting in conjunction of urea and catalyst converter, is reduced, and thus, reduces the discharge of NOx.Prior art heavy-duty car urea seeding restoring system is arranged on urea nozzle bearing on diesel engine exhaust conventionally, in diesel engine exhaust inserts the inlet pipe connection on SCR casing and after adopting clip to be fixedly connected with, urea nozzle bearing has also just been fixed on SCR casing air inlet front end.But due to assembly error, the insertion depth of diesel engine exhaust is fixing, make urea nozzle spray site also fixing apart from the distance at catalyst converter inlet end center in SCR case.When this distance departs from when more, by the utilization ratio of urea is reduced, even there will be crystalline polamer.On the other hand, because adopting clip, fixes the inlet pipe connection on diesel engine exhaust and SCR casing, the vibration producing in heavy goods vehicles running process, will make joint produce loosening, make above-mentioned distance produce skew, not only can make the utilization ratio of urea reduce and occur crystalline polamer, also can make urea liquid leak from joint.Obviously, prior art heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure, and to exist the utilization ratio of urea unstable, may occur that urea crystals phenomenon and urea liquid may be from problems such as joint leakages.
Summary of the invention
In order to solve prior art heavy-duty car urea seeding restoring system urea nozzle, to prop up the utilization ratio of the urea that seat installation structure exists unstable, may occur that urea crystals phenomenon and urea liquid may, from problems such as joint leakages, the utility model proposes a kind of heavy-duty car urea seeding restoring system urea nozzle and prop up seat installation structure.The utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure urea nozzle bearing is fixedly mounted on the inlet pipe connection on SCR casing, and urea nozzle is fixedly mounted on urea nozzle bearing.
The useful technique effect that the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure is to guarantee that urea nozzle spray site is apart from conformity and the stability of catalyst converter inlet end centre distance in SCR case, and be not subject to assembly error and the impact of the vibration of travelling, effectively guarantee the utilization ratio of urea, effectively prevent urea crystals and leakage.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic three dimensional views that the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure.
Below in conjunction with drawings and the specific embodiments, the utility model heavy-duty car urea seeding restoring system urea nozzle being propped up to seat installation structure is further described.
Embodiment
Accompanying drawing 1 is the schematic three dimensional views that the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure, and in figure, 1 is SCR casing, 2 is inlet pipe connection, and 3 is the connecting tube of giving vent to anger, and 4 is diesel engine exhaust, 5 is clip, and 6 is urea nozzle bearing.As seen from the figure, the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure urea nozzle bearing 6 is fixedly mounted on the inlet pipe connection 2 on SCR casing 1, and urea nozzle is fixedly mounted on urea nozzle bearing 6.Because the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure urea nozzle bearing 6 is fixedly mounted on the inlet pipe connection 2 on SCR casing 1, avoided in assembly process, diesel engine exhaust insertion depth is fixing, makes urea nozzle spray site apart from the distance at catalyst converter inlet end center in SCR case also unfixed problem.Meanwhile, avoid the vibration that produces in heavy goods vehicles running process, inlet pipe connection joint on diesel engine exhaust and SCR casing has been produced loosening, made above-mentioned distance produce the problem of skew.In addition, because urea nozzle is arranged on pipeline junction rear side, urea liquid can not leak from joint.Visible, the utility model heavy-duty car urea seeding restoring system urea nozzle is propped up seat installation structure and has been guaranteed that urea nozzle spray site is apart from conformity and the stability of catalyst converter inlet end centre distance in SCR case, and be not subject to assembly error and the impact of the vibration of travelling, effectively guarantee the utilization ratio of urea, effectively prevent urea crystals and leakage.
Claims (1)
1. heavy-duty car urea seeding restoring system urea nozzle is propped up a seat installation structure, it is characterized in that, urea nozzle bearing is fixedly mounted on the inlet pipe connection on SCR casing, and urea nozzle is fixedly mounted on urea nozzle bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264053.XU CN203856552U (en) | 2014-05-22 | 2014-05-22 | Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264053.XU CN203856552U (en) | 2014-05-22 | 2014-05-22 | Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856552U true CN203856552U (en) | 2014-10-01 |
Family
ID=51606410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264053.XU Expired - Fee Related CN203856552U (en) | 2014-05-22 | 2014-05-22 | Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856552U (en) |
-
2014
- 2014-05-22 CN CN201420264053.XU patent/CN203856552U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102337950B (en) | Vehicle urea SCR (Selective Catalyctic Reduction) system and static mixer thereof | |
| CN105351052A (en) | Structure for preventing pump from being damaged by liquid freezing in pump in SCR (Selective Catalytic Reduction) system | |
| CN101696648B (en) | Nozzle for selective catalytic conversion system of diesel engine | |
| CN103089383B (en) | Guiding device and guiding method for diesel engine selective catalytic reduction (SCR) system for automobile | |
| AU2011255962B2 (en) | Exhaust pipe | |
| CN201972767U (en) | Mixer for diesel engine urea-SCR system | |
| CN202273735U (en) | Automobile urea SCR (silicon controlled rectifier) system and static mixer | |
| CN203856552U (en) | Urea nozzle support mounting structure for urea catalytic-reduction system of heavy truck | |
| CN104632325A (en) | Urea pot assembly, SCR post-processing system and vehicle | |
| CN102852604A (en) | Urea injection device for tail gas denitration selective catalytic reduction (SCR) system of marine high-power diesel engine | |
| CN201835896U (en) | Urea liquid level sensor | |
| CN205135758U (en) | Urea tank for engineering machinery | |
| CN205371710U (en) | Exhaust switching -over pair butterfly valve | |
| CN206190367U (en) | Disconnect -type urea solution tank device of maring | |
| CN202811020U (en) | Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship | |
| CN203322568U (en) | Sealing mechanism for exhaust pipe of automobile engine | |
| CN103670612B (en) | Integrated automobile SCR aftertreatment system urea soln feedway | |
| CN102505979B (en) | Connection device and integrated SCR (selective catalytic reduction) catalytic muffler | |
| CN202937335U (en) | Pipe bending device integrated with urea nozzle holder | |
| CN102477890A (en) | Mixer for urea SCR (Selective Catalytic Reduction) system of diesel engine | |
| CN205297696U (en) | Be provided with heating element's urea case | |
| CN207229213U (en) | Diesel engine after treatment device | |
| CN203271880U (en) | SCR postprocessor catalytic converter | |
| CN205135770U (en) | Diesel engine tail gas treatment combination formula exhaust apparatus | |
| CN203822422U (en) | Integrated automobile SCR (Selective Catalytic Reduction) aftertreatment system urea solution supply device |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 |