CN202611817U - Urea supply unit for gas assisted type semiconductor control rectifier (SCR) system - Google Patents
Urea supply unit for gas assisted type semiconductor control rectifier (SCR) system Download PDFInfo
- Publication number
- CN202611817U CN202611817U CN2012202770356U CN201220277035U CN202611817U CN 202611817 U CN202611817 U CN 202611817U CN 2012202770356 U CN2012202770356 U CN 2012202770356U CN 201220277035 U CN201220277035 U CN 201220277035U CN 202611817 U CN202611817 U CN 202611817U
- Authority
- CN
- China
- Prior art keywords
- urea
- supply unit
- mixing chamber
- environmental monitoring
- supply system
- 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 - Lifetime
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 239000004202 carbamide Substances 0.000 title claims abstract description 48
- 239000004065 semiconductor Substances 0.000 title abstract 2
- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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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
- 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
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a urea supply unit for a gas assisted type semiconductor control rectifier (SCR) system. The urea supply unit comprises a urea metering supply system, an air supply system, a mixing cavity system and a mixing cavity environmental monitoring system, wherein the urea metering supply system and the air supply system are all connected with the mixing cavity system, the mixing cavity system is connected with the mixing cavity environmental monitoring system and monitored by the mixing cavity environmental monitoring system, the urea metering supply system, the air supply system, the mixing cavity environmental monitoring system are respectively and electrically connected with an automatic calling unit (ACU) control system of the whole gas assisted type SCR system and controlled by the ACU control system of the whole gas assisted type SCR system. The ACU control system acquires various kinds of information through a self-sensor and a controller area network (CAN) bus, according to working conditions of an engine, by means of inner calculation, needed emitting quantity of urea aqueous solution is worked out, and a metering pump is accurately controlled to spray. The urea supply unit for the gas assisted type SCR system is not provided with a urea return pipeline, use cost of the system is reduced, and in addition, the urea supply unit for the gas assisted type SCR system has the advantages of long service life.
Description
Technical field
The utility model relates to automotive emission control technique field, particularly relates to the urea supply unit that a kind of gas that is used for motor vehicle exhaust emission control helps formula SCR system.
Background technique
SCR is meant and is installed in the diesel car vent systems, with the catalytic reduction device that the NOx in the diesel emission is catalysed and reduced into N2 and O2, selects aqueous solution of urea as reducing agent.Aqueous solution of urea is ejected in the outlet pipe at the catalyzer upper reaches, and hydrolysis is produced as CO2 and ammonia under the effect of EGT and air-flow, and ammonia is reduced into free of contamination nitrogen G&W as reducing agent with NOx.Urea liquid must be according to the engine operating condition quantitative injection, thus the urea-spray system need with the control unit of engine communication.The working efficiency of SCR depends on gas temperature, and common gas row temperature reaches the above NOx transformation efficiency of 250 0C and can reach more than 85%.
At present, domestic diesel engine manufacturing enterprise tackles Abgasgesetz state IV on the horizon and more high-stage emission-reduction technology route is all clear and definite with, and SCR is a kind of efficient, practical vehicular emission control technique.Be that the SCR technology path is the optimal selection that medium and heavy diesel engine reaches IV stage emission standard.
The model utility content
The utility model technical problem to be solved is to design to above-mentioned needs of the prior art a kind ofly is used for the urea supply unit that gas helps formula SCR system; This gas helps the urea supply unit of formula SCR system to need not the urea return line, can reduce system's user cost and system's long service life.
The technical problem that the utility model requires to solve can realize through following technological scheme:
A kind ofly be used for the urea supply unit that gas helps formula SCR system; Comprise urea metering supply system, air supply system, mixing chamber system, mixing chamber environmental monitoring system; Said urea metering supply system all is connected with the mixing chamber system with air supply system; Said mixing chamber system is connected with the mixing chamber environmental monitoring system and monitored by said supervisory system; Said urea metering supply system, air supply system, mixing chamber environmental monitoring system help the ACU control system of formula SCR system to be electrically connected with whole gas respectively, and controlled by this ACU control system.
Said urea metering supply system helps the urea box of formula SCR system to be connected with gas, and said air supply system helps the vehicle-mounted source of compressed air of formula SCR system to be connected with gas.
Said urea metering supply system critical piece comprises that electricity drives metering pump, metering pump outlet in the horizontal direction up and down 5
0Scope in.
Said air supply system comprises interconnective air filter, pressure regulator and solenoid valve.
Said mixing chamber environmental monitoring system comprises environment temperature sensor and pressure differential pressure pickup.
Owing to adopted as above technological scheme, the utlity model has following characteristics: the urea supply unit does not have the urea return line, has reduced the user cost of system.The utility model also has the advantage of long service life.
Description of drawings
Fig. 1 is the utility model system architecture diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1; The utility model comprises urea metering supply system, air supply system, mixing chamber system, mixing chamber environmental monitoring system; Urea metering supply system is connected with the mixing chamber system with air supply system, and the mixing chamber system is connected with the mixing chamber environmental monitoring system.Urea metering supply system is connected with outside urea box; Air supply system is connected with outside vehicle-mounted source of compressed air; The supply system of urea metering simultaneously, air supply system, mixing chamber environmental monitoring system also are connected with the ACU control system, controlled in real time by the ACU control system.
Urea metering supply system critical piece is that electricity drives metering pump, can realize accurately control to supplying with urea, its outlet reference levels position up and down 5
0Scope all can.Inject the gas-liquid mixed chamber behind the metering pump metering urea liquid.
Air supply system can provide the pressurized air of 6-12 crust, and through air filter and pressure regulator (pressure regulation 4 crust) and then the solenoid valve (normally closed) through the 12V 2/2-way, solenoid valve is opened when system works, and gas is imported the mixing chamber system.
The mixing chamber system is a die cavity, when gas-liquid gets into, can produce whirlpool and mix, and also has one-way simultaneously.
The mixing chamber environmental monitoring system is monitored whether proper functioning of whole SCR system through the intrasystem working pressure of mixing chamber, and whether air feed is normal, and whether metering pump work is normal, and whether pipeline breakage etc.Implement to monitor by environment temperature sensor and pressure differential pressure pickup.
Urea liquid is supplied with must be according to engine operating condition situation quantitative injection, so the logic control circuit of quantitative injection unit is to be connected with the ACU control system.ACU goes through self-sensor and the CAN bus obtains various information, according to engine operating condition, through inner calculating, draws the aqueous solution of urea emitted dose that needs, and accurately controls metering pump and spray.
More than show and described the advantage of basic principle, major character and the utility model of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. one kind is used for the urea supply unit that gas helps formula SCR system; It is characterized in that; Comprise urea metering supply system, air supply system, mixing chamber system, mixing chamber environmental monitoring system; Said urea metering supply system all is connected with the mixing chamber system with air supply system; Said mixing chamber system is connected with the mixing chamber environmental monitoring system and monitored by said supervisory system, and said urea metering supply system, air supply system, mixing chamber environmental monitoring system help the ACU control system of formula SCR system to be electrically connected with whole gas respectively, and controlled by this ACU control system.
2. as claimed in claim 1ly be used for the urea supply unit that gas helps formula SCR system; It is characterized in that; Said urea metering supply system helps the urea box of formula SCR system to be connected with gas, and said air supply system helps the vehicle-mounted source of compressed air of formula SCR system to be connected with gas.
3. as claimed in claim 1 being used for is characterized in that the urea supply unit that gas helps formula SCR system, and said urea metering supply system critical piece comprises that electricity drives metering pump, metering pump outlet in the horizontal direction up and down 5
0Scope in.
4. as claimed in claim 1 being used for is characterized in that said air supply system comprises interconnective air filter, pressure regulator and solenoid valve in the urea supply unit that gas helps formula SCR system.
5. as claimed in claim 1 being used for is characterized in that the urea supply unit that gas helps formula SCR system that said mixing chamber environmental monitoring system comprises environment temperature sensor and pressure differential pressure pickup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202770356U CN202611817U (en) | 2012-06-13 | 2012-06-13 | Urea supply unit for gas assisted type semiconductor control rectifier (SCR) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202770356U CN202611817U (en) | 2012-06-13 | 2012-06-13 | Urea supply unit for gas assisted type semiconductor control rectifier (SCR) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611817U true CN202611817U (en) | 2012-12-19 |
Family
ID=47345526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202770356U Expired - Lifetime CN202611817U (en) | 2012-06-13 | 2012-06-13 | Urea supply unit for gas assisted type semiconductor control rectifier (SCR) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691557A (en) * | 2012-06-13 | 2012-09-26 | 安徽艾可蓝节能环保科技有限公司 | Urea supplying unit for air-assisting type SCR (Selective Catalyst Reaction) system |
-
2012
- 2012-06-13 CN CN2012202770356U patent/CN202611817U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691557A (en) * | 2012-06-13 | 2012-09-26 | 安徽艾可蓝节能环保科技有限公司 | Urea supplying unit for air-assisting type SCR (Selective Catalyst Reaction) 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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 247000 Guichi Industrial Park, Anhui, Chizhou Patentee after: ACTBLUE CO., LTD. Address before: 247000 Guichi Industrial Park, Anhui, Chizhou Patentee before: Anhui ActBlue Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |