CN201874647U - SCR (selective catalyst reduction) injecting head of diesel engine - Google Patents
SCR (selective catalyst reduction) injecting head of diesel engine Download PDFInfo
- Publication number
- CN201874647U CN201874647U CN2010206038048U CN201020603804U CN201874647U CN 201874647 U CN201874647 U CN 201874647U CN 2010206038048 U CN2010206038048 U CN 2010206038048U CN 201020603804 U CN201020603804 U CN 201020603804U CN 201874647 U CN201874647 U CN 201874647U
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- seat
- cooling
- scr
- diesel engine
- mounting seat
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Abstract
The utility model discloses an SCR (selective catalyst reduction) injecting head of a diesel engine, which comprises a cooling seat and a mounting seat. The mounting seat is communicated with an exhaust pipe of the diesel engine, the cooling seat is fixed onto the mounting seat, an upper connecting seat is arranged on the cooling seat and provided with a flow channel, a spray nozzle corresponding to the upper connecting seat is disposed inside the cooling seat, a water cooling cavity is formed between the spray nozzle and the cooling seat and communicated with a water cooling flow channel to be connected with a water pipe joint, a heat insulation cover is disposed between the spray nozzle and the mounting seat, and a heat insulation plate is arranged at a combining position of the cooling seat and the mounting seat. The SCR injecting head is provided with the cooling seat, the heat insulation cover is arranged between the spray nozzle and the mounting seat, and accordingly, the SCR injecting head is excellent in atomizing and cooling effects, avoids the problem of pipeline blockage due to high-temperature crystallization of urea liquor, is extremely simple in integral installation, convenient in maintenance and small in volume, and is easy to be arranged on the exhaust pipe of the engine.
Description
Technical field
The utility model relates to a kind of spray head, especially a kind of spray head that is used for the jet atomization urea liquid of selective catalytic conversion system of diesel engine SCR (Selective Catalyst Reduction).
Background technique
At present, serious pollution of atmosphere has been supervened in the fast development of Motor Vehicle, present region composite type characteristics, many metropolitan pollution of atmosphere turn to coal smoke and automotive composite type to pollute by coal-smoke pollution, and the minority megalopolis has obviously shown photochemical smog type (being the motor-vehicle tail-gas type) pollution of atmosphere.Therefore, the research of exhaust gas from diesel vehicle exhaust emission control technique and important and extremely urgent.
Development from commercial car, diesel engine is its major impetus, the general supercharging technology diesel-oil vehicle that adopts can satisfy the emission request in I stage, the II stage has been adopted charge inter cooling, the III stage has been introduced the electronic fuel injection technology, and the IV stage need be carried out reprocessing to exhaust on above-mentioned technical foundation.
Exhaust after treatment system in IV stage emission control mainly contains two technology paths: (1) selects catalytic reduction reaction to reduce the NOx discharging by optimizing motor (the emission controls by improving combustion technology is optimized oil spout, optimized combustion etc.) reduction PM discharging+SCR.(2) adopt EGR waste gas to reduce NOx discharging+employing particulate trap and reduce the PM discharging at circulating technology, be more prone to use first kind of scheme at present, traditional SCR selects catalytic reduction reaction to reduce the NOx discharging, when spray head sprays urea liquid to high-temperature tail gas, too high because of temperature, very easily cause urea liquid high temperature crystallization blocking pipeline.
The model utility content
The purpose of this utility model is to provide a kind of diesel SCR spray head, and it has simple in structure, and volume is little, easy to maintenance and atomizing, the characteristics of good cooling results.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of diesel SCR spray head, it comprises refrigerating seat and the fitting seat that is connected with Diesel Engine Exhaust Pipe, described refrigerating seat is fixed on the fitting seat, and described refrigerating seat is provided with upper connecting base, offer runner on the described upper connecting base, cooperate upper connecting base in refrigerating seat, to be provided with nozzle, form waterway between described nozzle and the refrigerating seat, described waterway is communicated with the water-cooled runner and connects water pipe adapter, and is provided with thermal shield between described nozzle and the fitting seat.
Described fitting seat is welded on the Diesel Engine Exhaust Pipe.
Described refrigerating seat is installed on the fitting seat by set screw, and the junction of described refrigerating seat and fitting seat is provided with thermal baffle.
Be provided with seal ring between described nozzle and the refrigerating seat.
The beneficial effects of the utility model are, described diesel SCR spray head is provided with refrigerating seat on fitting seat, and between nozzle and the fitting seat thermal shield is set, have good atomizing, cooling effect, avoided the problem of urea liquid because of the high temperature crystallization blocking pipeline, whole spray head is installed very simple, easy to maintenance, volume is little, arranges on engine exhaust pipe easily.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the structural representation of the utility model diesel SCR spray head.
Among the figure:
1, fitting seat; 2, refrigerating seat; 3, nozzle; 4, upper connecting base; 5, urea liquid runner; 6, waterway; 7, water-cooled runner; 8, water pipe adapter; 9, thermal shield; 10, thermal baffle; 11, set screw; 12, seal ring.
Embodiment
Please refer to shown in Figure 1, Fig. 1 is the structural representation of the utility model diesel SCR spray head, in present embodiment, a kind of diesel SCR spray head, it comprises fitting seat 1 and refrigerating seat 2, described fitting seat 1 is welded on the Diesel Engine Exhaust Pipe, and be connected with Diesel Engine Exhaust Pipe, described refrigerating seat 2 is installed on the fitting seat 1 by set screw 11, and be provided with nozzle 3 in the described refrigerating seat 2, form waterway 6 between described nozzle 3 and the refrigerating seat 2, described waterway 6 is communicated with the water-cooled runner 7 that is arranged in the refrigerating seat 2 and connects water pipe adapter 8, described water pipe adapter 8 is arranged on the refrigerating seat 2, is provided with seal ring 12 between described nozzle 3 and the refrigerating seat 2, and described nozzle 3 connects upper connecting base 4, offer urea liquid runner 5 on the described upper connecting base 4, be used for urea liquid is transported to nozzle 3, and be provided with thermal shield 9 between described nozzle 3 and the fitting seat 1, described refrigerating seat 2 is provided with thermal baffle 10 with the junction of fitting seat 1.
During work, high pressure urea solution enters nozzle 3 by upper connecting base 4 and opens by the solenoid valve on the DCU control nozzle 3, urea liquid is located atomized spray in the diesel exhaust gas pipeline at 3 mouthfuls at nozzle, cooling water enters 7 pairs of nozzles 3 of water-cooled runner by water pipe adapter 8 and cools off, high-temperature gas in thermal shield 9, the thermal baffle 10 minimizing outlet pipes is to the heat transfer of spray head simultaneously, avoided the problem of urea liquid because of the high temperature crystallization blocking pipeline, whole spray head is installed very simple, easy to maintenance, volume is little, arranges on engine exhaust pipe easily.
Claims (4)
1. diesel SCR spray head, it is characterized in that: it comprises refrigerating seat and the fitting seat that is connected with Diesel Engine Exhaust Pipe, described refrigerating seat is fixed on the fitting seat, and described refrigerating seat is provided with upper connecting base, offer runner on the described upper connecting base, cooperate upper connecting base in refrigerating seat, to be provided with nozzle, form waterway between described nozzle and the refrigerating seat, described waterway is communicated with the water-cooled runner and connects water pipe adapter, and is provided with thermal shield between described nozzle and the fitting seat.
2. diesel SCR spray head according to claim 1 is characterized in that: described fitting seat is welded on the Diesel Engine Exhaust Pipe.
3. according to claim 1 or 2 each described diesel SCR spray heads, it is characterized in that: described refrigerating seat is installed on the fitting seat by set screw, and the junction of described refrigerating seat and fitting seat is provided with thermal baffle.
4. diesel SCR spray head according to claim 3 is characterized in that: be provided with seal ring between described nozzle and the refrigerating seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206038048U CN201874647U (en) | 2010-11-12 | 2010-11-12 | SCR (selective catalyst reduction) injecting head of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206038048U CN201874647U (en) | 2010-11-12 | 2010-11-12 | SCR (selective catalyst reduction) injecting head of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874647U true CN201874647U (en) | 2011-06-22 |
Family
ID=44162569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206038048U Expired - Lifetime CN201874647U (en) | 2010-11-12 | 2010-11-12 | SCR (selective catalyst reduction) injecting head of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874647U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988412A (en) * | 2010-11-12 | 2011-03-23 | 无锡市凯龙汽车设备制造有限公司 | SCR (selective catalyst reduction) injector head of diesel engine |
| CN104937226A (en) * | 2012-08-27 | 2015-09-23 | 大陆汽车系统公司 | Reductant delivery unit for automotive selective catalytic reduction systems-active cooling |
| CN105065094A (en) * | 2015-08-12 | 2015-11-18 | 清华大学苏州汽车研究院（吴江） | SCR urea nozzle cooling and fixing device |
| WO2020062206A1 (en) * | 2018-09-30 | 2020-04-02 | 潍柴动力股份有限公司 | Nozzle mounting assembly and post-treatment system |
-
2010
- 2010-11-12 CN CN2010206038048U patent/CN201874647U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988412A (en) * | 2010-11-12 | 2011-03-23 | 无锡市凯龙汽车设备制造有限公司 | SCR (selective catalyst reduction) injector head of diesel engine |
| CN104937226A (en) * | 2012-08-27 | 2015-09-23 | 大陆汽车系统公司 | Reductant delivery unit for automotive selective catalytic reduction systems-active cooling |
| CN105065094A (en) * | 2015-08-12 | 2015-11-18 | 清华大学苏州汽车研究院（吴江） | SCR urea nozzle cooling and fixing device |
| WO2020062206A1 (en) * | 2018-09-30 | 2020-04-02 | 潍柴动力股份有限公司 | Nozzle mounting assembly and post-treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: KAILONG HIGH TECHNOLOGY CO., LTD. Free format text: FORMER NAME: KAILONG AUTOMOBILE EQUIPMENT MANUFACTURING CO., LTD., WUXI CITY |
|
| CP03 | Change of name, title or address |
Address after: 214000 Jiangsu city in Wuxi Province Economic Development Zone Huishan District Wuxi Tangqiao temple bridge supporting money Kailong Automobile Equipment Manufacturing Co Ltd Patentee after: Kailong High Technology Co., Ltd. Address before: Huishan District of Jiangsu city of Wuxi province Changan 214174 Street Xin Hui Lu 519-8 Patentee before: Wuxi Kailong Bus Equipment Manufacturing Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |