CN211448804U - SCR system hybrid spoiler device meeting national six-standard U-shaped packaging - Google Patents
SCR system hybrid spoiler device meeting national six-standard U-shaped packaging Download PDFInfo
- Publication number
- CN211448804U CN211448804U CN201922386271.6U CN201922386271U CN211448804U CN 211448804 U CN211448804 U CN 211448804U CN 201922386271 U CN201922386271 U CN 201922386271U CN 211448804 U CN211448804 U CN 211448804U
- Authority
- CN
- China
- Prior art keywords
- pipe
- plate
- spoiler
- mixing
- urea
- 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.)
- Active
Links
Images
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
- 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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a mixed turbulence device of an SCR system which meets the U-shaped package of the national six standards, which comprises a shell, a urea access pipe connected with the urea injection pipe is arranged on the side wall of the pipe orifice of the air inlet end of the shell, a flow guide pipe and a flow guide plate are arranged in the shell of the air inlet end opposite to the urea access pipe, the guide plate is provided with a round hole matched with the guide pipe, the guide pipe is connected on the round hole of the guide plate, an evaporator is arranged in the round hole, a spoiler parallel to the pipe orifice is arranged in the shell at the pipe orifice of the air outlet end, a mixing plate is arranged between the spoiler and the shell, a pipe hole is arranged in the middle of the mixing plate, a mixing pipe vertical to the mixing plate is arranged between the pipe hole and the shell, and evaporation plates for separating the guide plate from the mixing plate and the spoiler from the spoiler and the mixing pipe are arranged between the mixing plate and the spoiler and between the mixing pipe and the guide plate. The utility model discloses crushing effect to urea is more effective, and it is more obvious to improve crystallization effect.
Description
Technical Field
The utility model belongs to the technical field of the engine exhaust system, in particular to SCR system that satisfies six standard U type encapsulation in state mixes vortex device.
Background
There are two types of technologies currently used for reducing exhaust emissions, one is SCR (selective catalytic reduction) technology for catalytically reducing nitrogen oxides by purifying particles in the engine and outside the engine, and the other is EGR (engine exhaust gas recirculation) technology for purifying nitrogen oxides in the engine and the other is technology for filtering particles by a particle trap outside the engine. In order to meet the requirements of heavy-duty diesel commercial vehicles and heavy-duty diesel engines for implementing national IV emission standard regulations, and combine the supply of domestic diesel oil, the economical efficiency of vehicle production and operation, the actual aspects of vehicle emission standards and the like, and in order to reduce the emission of nitrogen oxides of the diesel vehicles and the diesel engines, the 'SCR' technology is adopted in the exhaust aftertreatment systems of the heavy-duty diesel commercial vehicles and the heavy-duty diesel engines. By "SCR" technology, we mean selective catalytic reduction systems. The working process of the SCR system is that urea aqueous solution is sprayed into the exhaust pipe through a spray pump and a nozzle and is mixed with tail gas in the exhaust pipe, the mixed gas enters a catalyst, urea atomized liquid in the tail gas is accelerated to be decomposed into ammonia under the combined action of high-temperature gas and a catalyst on the catalyst, the ammonia reacts with nitrogen oxide in the tail gas to generate nitrogen and is discharged, and therefore the content of the nitrogen oxide in the tail gas is reduced until the emission standard is met. The mixer is a component for atomizing and decomposing the urea aqueous solution injected from the urea nozzle and mixing the urea aqueous solution with the diesel engine exhaust gas.
In the prior art, the mixer adopts an inner layer perforated pipe and an outer layer perforated pipe, urea aqueous solution and nitrogen oxide discharged by a diesel engine can be atomized for the first time on the pipe wall of the inner pipe, and atomized for the second time under the action of the outer perforated pipe, and then enter the air inlet cavity. The structure is easy to generate urea crystals, and the mixing uniformity of urea and waste gas is poor, so that the conversion efficiency of the SCR box is low. In order to solve the above problems, although the mixer disclosed in the chinese patent "mixer for promoting atomization of urea aqueous solution" (No. CN205445746U) solves the above problems to some extent, the travel of the exhaust gas in the mixer is short and the mixing is insufficient, the problem of urea atomization is not completely solved, and the purification degree of the exhaust gas can satisfy the national IV emission standard but cannot satisfy the national VI emission standard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art's defect, provided a SCR system that satisfies six standard U types encapsulation of state mixes vortex device, it is more effective to the crushing effect of urea, it is more obvious to improve the crystallization effect.
The technical scheme of the utility model:
the utility model provides a satisfy mixed vortex device of SCR system of six standard U types encapsulation in state, includes the casing, be equipped with the urea that inserts the urea injection pipe on the orificial lateral wall of inlet end of casing and insert the pipe, urea inserts the inside honeycomb duct and the guide plate that is equipped with of casing of the just right inlet end of pipe, be equipped with on the guide plate with honeycomb duct assorted round hole, the honeycomb duct connects on the round hole of guide plate, be equipped with the evaporimeter in the round hole, state the casing of outlet end mouth of pipe department and be equipped with the spoiler parallel with the mouth of pipe in, be equipped with the mixing plate between spoiler and the casing, the middle part of mixing plate is equipped with the tube hole, be equipped with the hybrid tube of perpendicular to mixing plate between tube and the casing, be equipped with the evaporating plate that separates guide plate and mixing plate, spoiler and mixing tube between mixing plate and the guide.
Further, the casing is a flat U-shaped casing, and the pipe orifices of the air inlet end of the casing and the air outlet end of the casing are located on the same side face of the casing.
Furthermore, at least one opening is arranged on the pipe wall of the draft tube.
Further, the guide plate comprises vertical square plate with the honeycomb duct connection and the horizontal arc that parallels with the inlet end mouth of pipe, be equipped with a plurality of garrulous discharge orifices on the guide plate, the back of guide plate is equipped with the oblique fin that shelters from garrulous discharge orifice.
Further, the evaporator is a disc arranged in the round hole, a plurality of rows of broken flow holes are formed in the disc side by side, oblique blocking pieces for blocking the broken flow holes are arranged on the back face of the disc, the oblique blocking pieces in the same row are identical in inclination direction, and the two adjacent rows of oblique blocking pieces are opposite in inclination direction.
Furthermore, the spoiler is disc-shaped, and the dense through holes are formed in the spoiler.
Furthermore, be equipped with a plurality of garrulous discharge orifices on the mixing plate, be equipped with the oblique fin that shelters from garrulous discharge orifice on the mixing plate between mixing plate and the spoiler.
Furthermore, the pipe wall of the mixing pipe is provided with a plurality of broken flow holes, and the outer side of the pipe wall of the mixing pipe is provided with an oblique baffle plate for shielding the broken flow holes.
Further, the evaporating plate is an arc-shaped plate protruding and bending towards one side of the spoiler, and strip-shaped holes arranged in a matrix manner are formed in the evaporating plate.
Compared with the prior art, the flow guide pipe and the flow guide plate are combined for use, so that the flow guide effect is realized for urea injection, urea is prevented from directly impacting the wall surface of the shell when air flow passes through, and crystallization is easily formed; the high-speed airflow in the flow guide pipe is used for crushing the urea for the first time, so that the evaporation effect of the urea is improved; the evaporation plate is used for carrying out secondary crushing on urea to accelerate urea evaporation, and the urea liquid drops are subjected to powerful crushing and evaporation through the double structure of the evaporation plate and the flow guide pipe, so that the urea liquid drops are finer, and the subsequent urea decomposition reaction is facilitated; the mixing pipe is combined with the mixing plate, so that the mixing of the tail gas and NH3 is further improved; the spoiler rectifies the fully mixed gas to ensure that the gas flow uniformly passes through the catalyst for purification reaction; the evaporator is used for contacting urea liquid drops with the evaporator after urea is sprayed into the flow guide pipe, and the evaporator and the flow guide pipe are in a double structure for carrying out powerful crushing evaporation on the urea liquid drops, so that the urea liquid drops are finer, and the subsequent urea decomposition reaction is facilitated. The utility model discloses make urea pyrolysis and hydrolysis more abundant, bigger degree generate NH3 and tail gas mix, make the air current more even for it is more abundant when follow-up and catalyst reaction, even, efficiency is higher, plays good effect to gaseous water conservancy diversion, and to a great extent has improved the degree of crystallization, and different ammonia nitrogen ratio efficiency have reached fine effect, and is more effective to the crushing effect of urea, and it is more obvious to improve crystallization effect.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a schematic sectional view of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
Example 1:
a mixed turbulence device of an SCR system meeting the national six-standard U-shaped package is shown in figures 1, 2 and 3 and comprises a shell 1, wherein a urea access pipe 2 connected with a urea injection pipe is arranged on the side wall of an air inlet end 11 of the shell 1, a flow guide pipe 3 and a flow guide plate 4 are arranged inside the shell of the air inlet end 11 opposite to the urea access pipe 2, a round hole matched with the flow guide pipe 3 is formed in the flow guide plate, the flow guide pipe 3 is connected with the round hole of the flow guide plate 4, an evaporator 10 is arranged in the round hole, a turbulence plate 5 parallel to the pipe opening is arranged in the shell 1 at the pipe opening of an air outlet end 12, a mixing plate 6 parallel to the turbulence plate 5 is arranged between the turbulence plate 5 inside the shell 1 and the shell 1, a pipe hole is formed in the middle of the mixing plate 6, a mixing pipe 7 perpendicular to the mixing plate 6 is arranged between the pipe hole and the, An evaporation plate 8 for separating the baffle plate 4 from the mixing plate 6 and the baffle plate 5 from the mixing pipe 7 is arranged between the baffle plate 5 and the mixing pipe 7 and the baffle plate 4.
Further, the shell 1 is a flat U-shaped shell, the pipe orifices of the air inlet end 11 of the shell and the air outlet end 12 of the shell 1 are located on the same side face of the shell 1, and due to the design of the flat shell, the dpf catalyst and the SCR catalyst can be well connected, limited space is used, and the urea mixing effect is provided at the maximum performance.
Furthermore, the wall of the draft tube 3 is provided with at least one opening, so that the urea of the urea injection tube can smoothly enter the draft tube, and the tail gas discharged from the dpf catalyst can quickly enter the draft tube to be mixed with the urea.
Further, guide plate 4 comprises vertical square plate 41 of being connected with honeycomb duct 3 and the horizontal arc 42 that parallels with the 11 mouths of pipe of inlet end, be equipped with a plurality of garrulous discharge orifices 9 on the guide plate 4, the back of guide plate 4 is equipped with the oblique separation blade 91 that shelters from garrulous discharge orifice, and horizontal arc 43 and the oblique separation blade above that have increased behind the tail gas entering guide plate in the DPF catalyst, and from honeycomb duct and the vertical guide plate on the tail gas that gets into and the perpendicular impact of the tail gas that gets into of horizontal guide plate mix, improve mixed effect.
Further, the evaporator 10 is a disc arranged in the circular hole, the disc is provided with a plurality of rows of broken flow holes 9 side by side, the back of the disc is provided with oblique blocking pieces 91 for blocking the broken flow holes, the oblique blocking pieces in the same row have the same oblique direction, and the oblique blocking pieces in two adjacent rows have opposite oblique directions.
Further, the spoiler 5 is disc-shaped, the dense through holes 51 are formed in the spoiler 5, and the mixed air flow passing through the spoiler from the mixing pipe and the mixing plate generates vortex, so that an area with low flow velocity is formed in the center of the air inlet end face of the SCR catalyst, the uniformity of the air flow is reduced, the vortex degree of the air flow can be removed after the spoiler is arranged, and the uniformity of the air flow is improved.
Further, be equipped with a plurality of garrulous discharge orifices 9 on the mixing plate 6, lie in on the mixing plate and be equipped with the oblique fender piece that shelters from garrulous discharge orifices between mixing plate and the spoiler, be equipped with a plurality of garrulous discharge orifices on the pipe wall of mixing tube, be equipped with the oblique fender piece 91 that shelters from garrulous discharge orifices 9 on the pipe wall outside of mixing tube 7, the mixed gas flow can strike oblique baffle through garrulous discharge orifices, provides the mixed effect after the dispersion.
Further, evaporating plate 8 is the arc to 5 one side protruding crooked of spoiler, be equipped with the strip hole 81 that the matrix was arranged on the evaporating plate, the arc strikes looks adaptation with mixed gas flow's fan-shaped, and the evaporating plate carries out powerful broken evaporation to the urea liquid drop, makes the urea liquid drop more tiny, is favorable to subsequent urea decomposition reaction more.
Compared with the prior art, the flow guide pipe and the flow guide plate are combined for use, so that the flow guide effect is realized for urea injection, urea is prevented from directly impacting the wall surface of the shell when air flow passes through, and crystallization is easily formed; the high-speed airflow in the flow guide pipe is used for crushing the urea for the first time, so that the evaporation effect of the urea is improved; the evaporation plate is used for carrying out secondary crushing on urea to accelerate urea evaporation, and the urea liquid drops are subjected to powerful crushing and evaporation through the double structure of the evaporation plate and the flow guide pipe, so that the urea liquid drops are finer, and the subsequent urea decomposition reaction is facilitated; the mixing pipe is combined with the mixing plate, so that the mixing of the tail gas and NH3 is further improved; the spoiler rectifies the fully mixed gas to ensure that the gas flow uniformly passes through the catalyst for purification reaction; the evaporator is used for contacting urea liquid drops with the evaporator after urea is sprayed into the flow guide pipe, and the evaporator and the flow guide pipe are in a double structure for carrying out powerful crushing evaporation on the urea liquid drops, so that the urea liquid drops are finer, and the subsequent urea decomposition reaction is facilitated. The utility model discloses make urea pyrolysis and hydrolysis more abundant, bigger degree generate NH3 and tail gas mix, make the air current more even for it is more abundant when follow-up and catalyst reaction, even, efficiency is higher, plays good effect to gaseous water conservancy diversion, and to a great extent has improved the degree of crystallization, and different ammonia nitrogen ratio efficiency have reached fine effect, and is more effective to the crushing effect of urea, and it is more obvious to improve crystallization effect.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a satisfy mixed vortex device of SCR system of six standard U types encapsulation in state which characterized in that: the urea injection device comprises a housin, be equipped with the urea that inserts the urea injection pipe on the orificial lateral wall of inlet end of casing and insert the pipe, urea inserts the inside honeycomb duct and the guide plate of being equipped with of casing of the just right inlet end of pipe, be equipped with on the guide plate with honeycomb duct assorted round hole, the honeycomb duct connects on the round hole of guide plate, be equipped with the evaporimeter in the round hole, be equipped with the spoiler parallel with the mouth of pipe in the casing of the end mouth of pipe department of giving vent to anger, be equipped with the mixer plate between spoiler and the casing, the middle part of mixer plate is equipped with the tube hole, be equipped with the hybrid tube of perpendicular to mixer plate between tube hole and the casing, be equipped with the evaporating plate that separates guide plate and mixer plate, spoiler and hybrid tube.
2. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the shell is a flat U-shaped shell, and the air inlet end of the shell and the pipe orifice of the air outlet end of the shell are located on the same side face of the shell.
3. The hybrid spoiler device for the SCR system according to claim 1, further comprising: at least one opening is arranged on the pipe wall of the flow guide pipe.
4. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the guide plate comprises vertical square plate with honeycomb duct connection and the horizontal arc that parallels with the inlet end mouth of pipe, be equipped with a plurality of garrulous discharge orifices on the guide plate, the back of guide plate is equipped with the oblique fin that shelters from garrulous discharge orifice.
5. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the evaporator is a disc arranged in the round hole, a plurality of rows of broken flow holes are arranged on the disc side by side, oblique blocking pieces for blocking the broken flow holes are arranged on the back surface of the disc, the oblique blocking pieces in the same row are the same in inclination direction, and the oblique blocking pieces in two adjacent rows are opposite in inclination direction.
6. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the spoiler is disc-shaped and is provided with dense through holes.
7. The hybrid spoiler device for the SCR system according to claim 1, further comprising: be equipped with a plurality of garrulous discharge orifices on the mixing plate, lie in on the mixing plate and be equipped with the oblique fender piece that shelters from garrulous discharge orifice between mixing plate and the spoiler.
8. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the pipe wall of the mixing pipe is provided with a plurality of broken flow holes, and the outer side of the pipe wall of the mixing pipe is provided with an oblique baffle sheet for shielding the broken flow holes.
9. The hybrid spoiler device for the SCR system according to claim 1, further comprising: the evaporating plate is an arc-shaped plate which is convexly bent towards one side of the spoiler, and strip-shaped holes which are arranged in a matrix manner are formed in the evaporating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922386271.6U CN211448804U (en) | 2019-12-26 | 2019-12-26 | SCR system hybrid spoiler device meeting national six-standard U-shaped packaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922386271.6U CN211448804U (en) | 2019-12-26 | 2019-12-26 | SCR system hybrid spoiler device meeting national six-standard U-shaped packaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211448804U true CN211448804U (en) | 2020-09-08 |
Family
ID=72296631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922386271.6U Active CN211448804U (en) | 2019-12-26 | 2019-12-26 | SCR system hybrid spoiler device meeting national six-standard U-shaped packaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211448804U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459873A (en) * | 2020-11-12 | 2021-03-09 | 南京德普瑞克催化器有限公司 | Turbulent flow pre-burning mechanism and turbulent flow catalyst catalytic converter assembly comprising same |
| CN112459878A (en) * | 2020-12-22 | 2021-03-09 | 安徽艾可蓝环保股份有限公司 | Novel high-efficient vortex that mixes of six standards SCR systems of satisfying state device |
| CN114151174A (en) * | 2021-11-22 | 2022-03-08 | 保定市屹马汽车配件制造有限公司 | SCR mixer of automobile exhaust system |
-
2019
- 2019-12-26 CN CN201922386271.6U patent/CN211448804U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459873A (en) * | 2020-11-12 | 2021-03-09 | 南京德普瑞克催化器有限公司 | Turbulent flow pre-burning mechanism and turbulent flow catalyst catalytic converter assembly comprising same |
| CN112459878A (en) * | 2020-12-22 | 2021-03-09 | 安徽艾可蓝环保股份有限公司 | Novel high-efficient vortex that mixes of six standards SCR systems of satisfying state device |
| CN114151174A (en) * | 2021-11-22 | 2022-03-08 | 保定市屹马汽车配件制造有限公司 | SCR mixer of automobile exhaust system |
| CN114151174B (en) * | 2021-11-22 | 2022-10-28 | 保定市屹马汽车配件制造有限公司 | SCR mixer of automobile exhaust system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211448804U (en) | SCR system hybrid spoiler device meeting national six-standard U-shaped packaging | |
| CN108457727A (en) | SCR urea mixers | |
| CN110735693B (en) | Urea mixer for exhaust aftertreatment | |
| CN212177258U (en) | SCR mixer | |
| CN214403720U (en) | SCR mixing device | |
| CN213175779U (en) | Chassis type SCR purifier and axial injection urea mixing device thereof | |
| CN210858884U (en) | Tail gas aftertreatment mixing arrangement | |
| CN212898661U (en) | Urea mixing device and chassis type postprocessor | |
| CN108798852A (en) | A kind of compact large-scale diesel engine exhaust gas processing device and method | |
| CN205445746U (en) | Mixer for promoting atomization of aqueous solution of urea | |
| CN110848005B (en) | Engine tail gas aftertreatment mixing arrangement | |
| CN114542248B (en) | SCR system and engine | |
| CN111764989B (en) | Efficient post-treatment packaging SCR mixer system and treatment method thereof | |
| CN214330729U (en) | Urea mixer for diesel engine tail gas aftertreatment | |
| CN202467984U (en) | Selective catalytic reduction (SCR) catalytic converter for aftertreatment on tail gas of diesel engine | |
| CN213510811U (en) | Separating mixer with heat insulation structure | |
| CN213928499U (en) | Post-treatment urea mixing device | |
| CN208502877U (en) | A kind of compact large-scale diesel engine exhaust gas processing device | |
| CN209385209U (en) | A kind of diesel engine after-treatment system SCR urea mixer | |
| CN213790971U (en) | Offset SCR mixer | |
| CN112459874B (en) | Mixing assembly of urea mixing device | |
| CN213360218U (en) | Mixer of tail gas aftertreatment system | |
| CN102536399A (en) | SCR (Selective Catalytic Reduction) catalytic converter for post treatment of tail gas of diesel engine | |
| CN112112718A (en) | Mixer of tail gas aftertreatment system | |
| CN215761872U (en) | SCR system mixed turbulence device meeting national emission requirements of six countries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |