CN203271879U - SCR postprocessor - Google Patents
SCR postprocessor Download PDFInfo
- Publication number
- CN203271879U CN203271879U CN 201320319197 CN201320319197U CN203271879U CN 203271879 U CN203271879 U CN 203271879U CN 201320319197 CN201320319197 CN 201320319197 CN 201320319197 U CN201320319197 U CN 201320319197U CN 203271879 U CN203271879 U CN 203271879U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- outer cylinder
- carrier
- scr
- suction tude
- 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
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model provides a SCR postprocessor. The SCR postprocessor comprises an air inlet pipe assembly connected with an engine exhaust pipe, an outer cylinder body used for loading a SCR carrier, an exhaust pipe, and end plates used for sealing two ends of the outer cylinder body. A carrier is arranged in the outer cylinder body. The cylinder body, the carrier and the end plates disposed at two ends are connected to be a SCR postprocessor. The air inlet pipe assembly and exhaust pipe are connected on the SCR postprocessor. An inner cylinder body with a necking hole is disposed in the outer cylinder body and is used for loading the carrier. The carrier is fixed on the outer cylinder body via sealing gaskets at two ends, check rings and partition boards. Two ends of the carrier are provided with the sealing gaskets, the check rings and the partition boards, wherein the sealing gaskets, the check rings and the partition boards are sequentially from inside to outside. The SCR postprocessor is characterized by being high in stability, long in service lifetime and high in reliability; and is convenient to machine and easy to enhance production efficiency. The defect rate during production and the failure rate of the SCR postprocessor in use are greatly reduced.
Description
Technical field
This practicality belongs to the diesel engine vent gas field of processors, especially relates to a kind of SCR preprocessor that is used in conjunction with SCR urea-spray system.
Background technique
Diesel engine is having obvious advantage, particularly CO than petrol engine aspect power character, Economy and reliability
2Discharge very lowly, its purposes expands on all kinds of vehicles gradually.But the maximum problem of diesel engine existence is that the discharging of particulate matter and nitrogen oxide is serious.Along with Chinese emission control regulations are more and more stricter, and domestic diesel engine performance and oil product problem, depend the emission controls by improving combustion measure alone and seem unable to do what one wishes, therefore be necessary to take the outer after-treatment system of machine to reach the reduction of discharging target.
The SCR technology is the outer post-processing technology of a kind of machine of vehicle diesel engine, can effectively improve the discharging of diesel engine nitrogen oxide, and insensitive to the diesel oil sulphur content.This technology is by spraying into certain density urea liquid in outlet pipe, reduction reaction (reaction 3～5) occurs in ammonia and nitrogen oxide after pyrolysis (reaction 1) and hydrolysis (reaction 2) in the reprocessing catalytic converter, with water vapour and the nitrogen of conversion of nitrogen oxides for environment is safe from harm.
Due in the past SCR preprocessor in the mounting type of carrier and the problem on method, cause the life-span of whole SCR preprocessor shorter, and some drawbacks structurally, cause and produce and processing difficulties, strengthened the failure rate in the higher reject ratio that adds man-hour and use.
（NH
2）
2CO→NH
3+HNCO (1)
NH
3+HNCO→NH
3+CO
2 (2)
4NO+4NH
3+O
2→4N
2+6H
2O (3)
2NO
3+NO+NO
2→2N
2+3H
2O (4)
6NO
2+8NH
3→7N
2+12H
2O (5)
The model utility content
The problem that this practicality will solve is to provide a kind of SCR preprocessor, and especially a kind of stability is high, the SCR preprocessor of long service life, good reliability.
for solving the problems of the technologies described above, the technological scheme that this practicality is adopted is: a kind of SCR preprocessor, comprise the suction tude assembly that is connected with engine exhaust pipe, be used for loading the outer cylinder body of SCR carrier, outlet pipe, and the end plate that is used for sealing outer cylinder body two ends, in described outer cylinder body, carrier is set, described outer cylinder body, the end plate at carrier and two ends connects into the SCR preprocessor, described suction tude assembly and outlet pipe are connected on the SCR preprocessor, be provided for the inner barrel with reducing of carrier loaded in described outer cylinder body, described carrier is by the seal washer at two ends, back-up ring and dividing plate are fixed on outer cylinder body, seal washer is arranged at the carrier two ends from inside to outside successively, back-up ring and dividing plate.
Further, the suction tude assembly is connected on outer cylinder body, and described outlet pipe is connected on end plate.
Further, the suction tude assembly is connected with the flange plug-in type that is connected to of outer cylinder body.
Further, end plate and outer cylinder body adopt the form of flange to fix.
Further, be installed in inner barrel after carrier outer wall parcel liner.
Further, the suction tude assembly is comprised of left air inlet tube wall, right air inlet tube wall and the inlet flange that is set on left and right air inlet tube wall.
Further, be provided for sensor installation seat that tail gas is detected on suction tude assembly, outer cylinder body or outlet pipe.
Advantage and good effect that this practicality has are: the SCR preprocessor that this is practical, have high, the long service life of stability, good reliability, easy to process, the characteristics that are easy to enhance productivity, can significantly reduce the defective products rate in production and use in the SCR preprocessor of failure rate.
Description of drawings
Fig. 1 is this practical internal structure partial schematic sectional view
Fig. 2 is this practical end face side-looking structural representation
Fig. 3 is that the master of this practicality looks the surface structure schematic diagram
Fig. 4 is that this practical end plate connects local enlarged diagram
Fig. 5 is this practical suction tude assembly structure schematic diagram
Fig. 6 is this practical suction tude assembly and outer cylinder body connection diagram
Fig. 7 is this practical inner barrel linkage structure schematic diagram
In figure:
1, left air inlet tube wall 2, outer cylinder body 3, end plate
4, outlet pipe 5, carrier 6, liner
7, seal washer 8, back-up ring 9, sensor installation seat
10, dividing plate 11, right air inlet tube wall 12, inlet flange
13, inner barrel
Embodiment
As extremely shown in Figure 7 in Fig. 1, the SCR reprocessing catalyst that this is practical, outer cylinder body 2, liner 6, the seal washer 7 that comprise the suction tude assembly that is connected for engine exhaust pipe, is used for loading SCR carrier 5 be connected with back-up ring, be used for end plate 3, dividing plate 10 that described suction tude assembly, outlet pipe 4 are connected with described outer cylinder body 2.The end plate 3 at outer cylinder body 2 and two ends is linked to be the SCR preprocessor shell of an integral body.The suction tude assembly that is connected with engine exhaust pipe and outlet pipe 4 are connected on the SCR preprocessor, liner 6 is installed in the SCR preprocessor after carrier 5 outer walls are wrapped up, seal washer 7 and back-up ring 8 by two ends are fixed in carrier 5 on outer cylinder body 2, and two dividing plates 10 are individually fixed in carrier 5 both sides, two end plates 3.The described sensor installation seat 9 that tail gas is detected is fixed on described suction tude assembly, outlet pipe 4 or outer cylinder body 2, described suction tude assembly is connected and fixed by left air inlet tube wall 1, right air inlet tube wall 11 and inlet flange 12 and forms, and integral body is fixed on outer cylinder body 2.
The SCR preprocessor that this is practical has high, the long service life of stability, good reliability, easy to process, the characteristics that are easy to enhance productivity, can significantly reduce the defective products rate in production and use in failure rate.As shown in Figure 1, seal washer 7 and back-up ring 8 that carrier 5 two ends increase, make carrier under extremely abominable working condition, still can guarantee stability and flexible contact, guarantee that carrier 5 still can work under extremely abominable working condition, slight crack, fragmentation do not occur and fall the phenomenons such as slag, leakage; As Fig. 2, shown in Figure 4, end plate 3 adopts the form of flange to be fixed on outer cylinder body 2, ease of assembly and welding; As shown in Figure 5, the suction tude assembly is cut sth. askew by original straight tube and is spliced the form that consists of an elbow bend, be changed to by left air inlet tube wall 1, right air inlet tube wall 11 and inlet flange 12 assembly unit welding, and be made into flange is connected to form plug-in type in suction tude assembly and outer cylinder body 2 joints, make connection more firm, dismounting is more convenient; As shown in Figure 7, carrier 5 is had inner barrel 13 parcels of reducing by two ends, and its reducing can prevent the axial motion of carrier 5.Above structural optimization has facilitated assembling processing and welding, has improved manufacturing efficiency, has reduced the failure rate in product reject ratio and use.
An above embodiment to this practicality has been described in detail, but described content is only this practical preferred embodiment, can not be considered to for limiting this practical practical range.The equalization variation that Fan Yiben utility application scope is done and improvement etc. are within all should still belonging to this practical patent covering scope.
Claims (7)
1. SCR preprocessor, comprise the suction tude assembly that is connected with engine exhaust pipe, outer cylinder body, the outlet pipe that is used for loading the SCR carrier, and the end plate that is used for sealing outer cylinder body two ends, in described outer cylinder body, carrier is set, the end plate at described outer cylinder body, carrier and two ends connects into the SCR preprocessor, described suction tude assembly and outlet pipe are connected on the SCR preprocessor, it is characterized in that:
Be provided for the inner barrel with reducing of carrier loaded in described outer cylinder body,
Described carrier is fixed on outer cylinder body by seal washer, back-up ring and the dividing plate at two ends, and carrier two ends are arranged seal washer, back-up ring and dividing plate from inside to outside successively.
2. SCR preprocessor according to claim 1, it is characterized in that: described suction tude assembly is connected on outer cylinder body, and described outlet pipe is connected on end plate.
3. SCR preprocessor according to claim 2 is characterized in that: described suction tude assembly and outer cylinder body be connected to flange plug-in type Connecting format.
4. SCR preprocessor according to claim 1 is characterized in that: described end plate and outer cylinder body adopt the form of flange to fix.
5. SCR preprocessor according to claim 1, is characterized in that: be installed in inner barrel after described carrier outer wall parcel liner.
6. SCR preprocessor according to claim 1 is characterized in that: described suction tude assembly is comprised of left air inlet tube wall, right air inlet tube wall and the inlet flange that is set on left and right air inlet tube wall.
7. SCR preprocessor according to claim 1 is characterized in that: be provided for sensor installation seat that tail gas is detected on described suction tude assembly, outer cylinder body or outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320319197 CN203271879U (en) | 2013-06-04 | 2013-06-04 | SCR postprocessor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320319197 CN203271879U (en) | 2013-06-04 | 2013-06-04 | SCR postprocessor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203271879U true CN203271879U (en) | 2013-11-06 |
Family
ID=49502316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320319197 Expired - Fee Related CN203271879U (en) | 2013-06-04 | 2013-06-04 | SCR postprocessor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203271879U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266939A (en) * | 2013-06-04 | 2013-08-28 | 天津亿利汽车环保科技有限公司 | SCR postprocessor |
| CN107420177A (en) * | 2017-03-24 | 2017-12-01 | 常州市金坛奉献橡塑有限公司 | Automobile preprocessor and the soft coating member production technology of exhaust insulation |
-
2013
- 2013-06-04 CN CN 201320319197 patent/CN203271879U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266939A (en) * | 2013-06-04 | 2013-08-28 | 天津亿利汽车环保科技有限公司 | SCR postprocessor |
| CN107420177A (en) * | 2017-03-24 | 2017-12-01 | 常州市金坛奉献橡塑有限公司 | Automobile preprocessor and the soft coating member production technology of exhaust insulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202360191U (en) | Diesel engine tail gas processing SCR catalytic converter | |
| CN203271879U (en) | SCR postprocessor | |
| CN202467984U (en) | Selective catalytic reduction (SCR) catalytic converter for aftertreatment on tail gas of diesel engine | |
| CN205370687U (en) | SCR silencer assembly | |
| CN201330637Y (en) | Catalytic converter used for exhaust system of diesel engine | |
| CN202431338U (en) | Catalytic conversion muffler of diesel engine | |
| CN201714465U (en) | Reduction catalyst | |
| CN202250314U (en) | SCR (Selective Catalytic Reduction) purification and sound-silencing device capable of quickly igniting | |
| CN201705474U (en) | Low-temperature control self-adaptation valve of SCR catalytic converter | |
| CN102191976A (en) | Catalytic silencer for diesel | |
| CN202012387U (en) | Catalytic converter used for tail gas treatment of diesel | |
| CN102116187A (en) | Catalytic converter for tail gas treatment of diesel engine | |
| CN202157848U (en) | SCR (Selective Catalytic Reduction) catalytic converter | |
| CN203271880U (en) | SCR postprocessor catalytic converter | |
| CN202157847U (en) | Construction machinery SCR post processor | |
| CN103266939A (en) | SCR postprocessor | |
| CN103256107B (en) | A kind of SCR reprocessing catalyst | |
| CN201120254Y (en) | SCR catalytic converter | |
| CN202745971U (en) | Square-box type small carrier catalytic muffler | |
| CN203130210U (en) | Selective catalysis silencer for diesel engine | |
| CN209838505U (en) | Radial injection close-coupled mixing device for mixing reducing agent fluid | |
| CN203130212U (en) | One-way gas-liquid mixing device for urea pump | |
| CN204225977U (en) | Selective catalytic reduction post-processor assembly | |
| CN102505979B (en) | Connection device and integrated SCR (selective catalytic reduction) catalytic muffler | |
| CN206346812U (en) | A kind of SCR catalytic converter |
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 |
Granted publication date: 20131106 Termination date: 20180604 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |