CN113047928B - A tight coupling formula urea carbon cigarette economic benefits and social benefits mixing arrangement for SDPF - Google Patents
A tight coupling formula urea carbon cigarette economic benefits and social benefits mixing arrangement for SDPF Download PDFInfo
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- CN113047928B CN113047928B CN202110314738.5A CN202110314738A CN113047928B CN 113047928 B CN113047928 B CN 113047928B CN 202110314738 A CN202110314738 A CN 202110314738A CN 113047928 B CN113047928 B CN 113047928B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
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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
- 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
Abstract
The application relates to a tight coupling urea carbon smoke double-effect mixing device for an SDPF (space velocity fuel), which comprises an air inlet assembly, a DOC (DOC-based engine) assembly, a tight coupling urea carbon smoke double-effect mixing device, an expansion pipe, an SDPF assembly and an air outlet assembly which are sequentially connected; the tight coupling type urea carbon smoke double-effect mixing device comprises a connecting cavity, wherein the side surface of the upper part of the connecting cavity is a cavity input end, the side surface of the lower part of the connecting cavity is a cavity output end, a nozzle base is arranged on the upper part of the connecting cavity, and a urea nozzle is fixed on the nozzle base. The application has simple structure and small occupied space; according to the characteristics of the tightly coupled purifier, the DOC part and the SDPF part of the purifier are arranged in a V shape up and down, and are connected through a compact mixing device, so that the occupied space of the purifier is greatly reduced, the temperature loss is reduced, and the average exhaust temperature of the SDPF is improved; the rear end of the DOC is provided with a flow blocking sheet for preventing the air flow from directly blowing urea spray after the DOC, and reducing the influence of the air flow on urea particles.
Description
Technical Field
The application belongs to the technical field of diesel engine tail gas aftertreatment, and relates to a tight coupling urea carbon smoke double-effect mixing device for an SDPF.
Background
SDPF is a post-treatment route to achieve a dual-layer function by applying an SCR catalyst coating to a DPF, and is currently used primarily in light diesel vehicle purifiers. SDPF is required to meet both higher NH3 mixing uniformity requirements of the SCR system to promote NOx conversion efficiency and higher flow rate uniformity and higher soot distribution uniformity requirements of the DPF system to reduce soot plugging and regeneration non-uniformity risks. In addition, since small amounts of urea crystallization can cause severe DPF clogging, the crushing effect and the decomposition rate of urea must be increased as much as possible, reducing the crystallization risk of SDPF.
The light-duty diesel vehicle generally adopts tight coupling formula clarifier to arrange, because the clarifier is installed in the engine compartment, arranges the space compact, and mixing arrangement design degree of difficulty is great. The measures of increasing the mixing distance, increasing the volume of a mixing cavity and the like which are commonly adopted by the conventional heavy diesel vehicle are difficult to spread. How to ensure multi-layer effects such as soot uniformity, urea mixing uniformity, urea breakage and the like in a compact arrangement space is a difficult problem in the development process of an SDPF tightly coupled purifier.
Disclosure of Invention
The application aims to provide a tightly coupled urea and carbon smoke double-effect mixing device for an SDPF, which can solve the problems, realize double-effect mixing of urea and carbon smoke in a narrow space and improve the urea decomposition efficiency.
According to the technical scheme provided by the application: a tight coupling urea carbon smoke double-effect mixing device for SDPF comprises an air inlet component, a DOC component, a tight coupling urea carbon smoke double-effect mixing device, an expansion pipe, an SDPF component and an air outlet component which are connected in sequence; the tight coupling type urea carbon smoke double-effect mixing device comprises a connecting cavity, wherein the side surface of the upper part of the connecting cavity is a cavity input end, the side surface of the lower part of the connecting cavity is a cavity output end, a nozzle base is arranged on the upper part of the connecting cavity, a urea nozzle is fixed on the nozzle base, fin partition plates are welded in the cavity output end and the air outlet end of a DOC component, a turbine blade component is arranged on the neck part in the middle of the connecting cavity, and a conical pore plate is arranged at the cavity output end.
As a further development of the application, the urea nozzle is fastened to the nozzle base by means of a connector clip.
As a further improvement of the application, welding convex points are arranged at the upper part of the fin partition plate, flanging is arranged at the bottom of the fin partition plate, and drainage fins and sealing fins are respectively arranged at the left side and the right side of the fin partition plate.
As a further improvement of the application, the lower part of the fin baffle plate is provided with a vent hole.
As a further improvement of the application, the two sides of the lower part of the fin baffle plate are provided with pressure relief openings.
As a further improvement of the application, the turbine blade component is bowl-shaped and comprises arc-shaped blades, the arc-shaped blades are overlapped and arranged, the arc-shaped blades are recessed towards the center, a mixed gas through hole is reserved in the middle, a blade gap is reserved between adjacent blades, and crushing holes are formed in the top ends of the blades.
As a further improvement of the application, the blade gap is gradually folded from outside to inside and has horizontal and vertical included angles.
As a further improvement of the application, the conical pore plate is bucket-shaped, the distribution holes are gradually and tightly arranged from outside to inside, and the gathering holes are arranged in the middle of the conical pore plate.
As a further improvement of the application, the lower part of the connecting cavity is provided with a guide surface.
The application has the positive progress effects that:
1. the application has simple structure and small occupied space; according to the characteristics of the tightly coupled purifier, the DOC part and the SDPF part of the purifier are arranged in a V shape up and down, and are connected through a compact mixing device, so that the occupied space of the purifier is greatly reduced, the temperature loss is reduced, and the average exhaust temperature of the SDPF is improved.
2. The rear end of the DOC is provided with the flow blocking sheet, so that the direct blowing of the urea spray beam by the air flow after the DOC is prevented, and the influence of the air flow on urea particles is reduced.
3. The baffle plate is semi-annular, the lengths of the fins on two sides are different, and air flow is guided to flow into a cavity behind the baffle plate from the short fins, so that a rotational flow effect is primarily formed.
4. According to the application, a turbine blade type mixing structure is adopted below the nozzle, 8 blades are uniformly distributed on the turbine blade type mixing structure, the blades are staggered, and the rotating direction of the turbine blade type mixing structure is in anticlockwise rotation, and is consistent with the rotating direction of the flow blocking piece, so that the rotating effect of the mixing device is further enhanced. The two interact to rotationally mix the gas stream with the urea particles.
5. In order to further improve the crushing effect of urea particles, small holes are uniformly distributed at the front ends of the blades of the turbine blade type mixed structure, and the small holes and the blades form a diversion effect on urea spraying together, and meanwhile, the urea is crushed.
6. In order to ensure uniform distribution of the strong rotating air flow on the front end face of the SDPF, a conical orifice plate is arranged below the turbine blade type mixing structure. Holes with diameters of 5mm are arranged at the periphery of the conical pore plate in a sparse mode, holes with diameters of 6mm are arranged in the conical pore plate in a dense mode, and a 20mm large hole is arranged in the middle position and used for gathering airflow towards the middle, and distribution uniformity of airflow (soot) and urea is improved.
Drawings
Fig. 1 is a schematic diagram of an application of the close-coupled urea soot dual-effect mixing device of the present application.
Fig. 2 is a cross-sectional view of an application of the close-coupled urea soot dual-effect mixing device of the present application.
Fig. 3 is an exploded view of the application of the close-coupled urea soot dual-effect mixing device of the present application.
Fig. 4 is a schematic structural view of a fin partition plate of the tightly coupled urea carbon smoke double-effect mixing device.
FIG. 5 is a schematic view of a turbine blade assembly of a close-coupled urea soot dual-effect mixing device of the present application.
Fig. 6 is a schematic structural view of a conical orifice plate of the close-coupled urea soot dual-effect mixing device of the present application.
Fig. 7 is a schematic airflow diagram of a close-coupled urea soot dual-effect mixing device of the present application.
Fig. 8 is an exploded airflow schematic diagram of a close-coupled urea soot dual-effect mixing device of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a process, method, system, article, or apparatus that comprises a list of steps or elements does not necessarily limit the process, method, system, article, or apparatus to those explicitly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In fig. 1-6, the device comprises an air inlet assembly 1, a DOC assembly 2, a close-coupled urea carbon smoke double-effect mixing device 3, an expansion pipe 4, an SDPF assembly 5, an air outlet assembly 6 and the like.
As shown in fig. 1 and 2, the application relates to an SDPF purifier, which mainly comprises an air inlet component 1, a DOC component 2, a tightly coupled urea carbon smoke double-effect mixing device 3, an expansion pipe 4, an SDPF component 5, an air outlet component 6 and the like. The parts are connected by welding.
As shown in fig. 2 and 3, the close-coupled urea-soot dual-effect mixing device 3 according to the present application is installed after the DOC component 2 when applied to the SDPF purifier. The urea spray nozzle mainly comprises a urea spray nozzle 3-1, a spray nozzle base 3-2, a fin baffle plate 3-3, a turbine blade assembly 3-4, a connecting cavity 3-5, a conical pore plate 3-6 and the like.
As shown in the figure, the upper side surface of the connecting cavity 3-5 is a cavity input end, the lower side surface is a cavity output end, the cavity input end is used for being communicated with the air outlet end of the DOC assembly 2, and the cavity output end is used for being communicated with the air inlet end of the expansion pipe 4. The upper part of the connecting cavity 3-5 is welded with a nozzle base 3-2, the nozzle base 3-2 is vertical to the input end of the cavity, the urea nozzle 3-1 is fixed on the nozzle base 3-2 through a connecting clamp, and the urea spraying direction is vertical to the air outlet end of the DOC component 2. The fin partition plates 3-3 are welded in the cavity output end and the air outlet end of the DOC component 2, the turbine blade component 3-4 is arranged at the middle neck of the connecting cavity 3-5, and the conical pore plate 3-6 is arranged at the cavity output end.
As shown in FIG. 4, the upper part of the fin baffle plate 3-3 is provided with a welding convex point 3-31 which can be directly welded at the upper end of the connecting cavity body 3-5, and the bottom flanging 3-32 of the fin baffle plate 3-3 is welded with the DOC component 2. The fins are arranged on the left side and the right side, the left side drainage fins 3-33 are shorter, and the right side sealing fins 3-34 are longer. The fins are mainly used for preventing the air flow from directly blowing urea spray sprayed by the urea nozzle 3-1, and guiding the air flow to enter the cavity from one side of the drainage fin 3-33. The lower part of the fin baffle plate 3-3 is provided with vent holes 3-36 for introducing tail gas, urea is prevented from being sprayed on the fin baffle plate 3-3, two sides of the lower part of the fin baffle plate 3-3 are provided with pressure relief openings 3-35 for relieving pressure of the tail gas, and the falling-off of the fin baffle plate 3-3 caused by overlarge input pressure of the tail gas is prevented.
The turbine blade assembly 3-4 is mounted on the middle neck of the connecting cavity 3-5 and is connected through welding. As shown in FIG. 5, the turbine blade assembly 3-4 is bowl-shaped and comprises 8 arc blades 3-41 which are arranged in an overlapping manner, are recessed towards the center, and are provided with mixed gas through holes 3-42 in the middle, blade gaps 3-43 are left between adjacent blades 3-41, the blade gaps 3-43 are gradually folded from outside to inside and have horizontal and vertical included angles, so that strong rotational flow can be generated by passing air flow, and 3 crushing holes 3-44 are respectively formed at the top ends of the 8 blades 3-41. The turbine blade assembly 3-4 is mainly used for receiving urea spray, and the blades 3-41 and the crushing holes 3-44 on the blades have good effects on crushing urea particles. Meanwhile, the arc-shaped blades 3-41 which are overlapped and distributed can form strong rotating airflow, so that the mixing of urea and airflow is completed, and the decomposition of urea is promoted.
The conical pore plate 3-6 is welded at the output end of the connecting cavity 3-5. As shown in fig. 6, the conical orifice plate 3-6 is in a bucket shape, and the distribution holes 3-61 are gradually and tightly arranged from outside to inside, so that the distribution uniformity of air flow (soot) and urea is improved. The middle of the conical pore plate 3-6 is provided with a gathering hole 3-62 for gathering the air flow towards the middle.
The diversion holes 3-61 are holes with diameters of 5mm in a sparse arrangement mode on the periphery and holes with diameters of 6mm in a dense arrangement mode on the inside.
The gathering pore 3-62 is a big pore of 20 mm.
Because of the space structure of the vehicle, the turbine blade component 3-4 and the conical orifice plate 3-6 have an included angle of 50-60 degrees, and a guide surface 3-51 is arranged at the lower part of the connecting cavity 3-5 in order to enable the mixed gas path to flow to the conical orifice plate 3-6.
The working process of the application is as follows:
on the one hand, as shown in fig. 7 and 8, urea is sprayed into the connecting cavity 3-5 through the urea nozzle 3-1, the flowing pressure of the urea is high, the urea enters the connecting cavity 3-5 and is in conical mist shape, the urea flows downwards from top to bottom, large-particle urea is positioned in the middle of the spray under the action of gravity, and the urea with small particles is positioned outside the cylindrical spray. When the air flow passes through the DOC component 2 and enters the cavity input end of the tightly coupled urea carbon smoke double-effect mixer device 3, the air flow is blocked by fins on the fin partition plate 3-3, and urea particles sprayed by the air flow direct blowing urea nozzle 3-1 are prevented, so that urea is prevented from being blown onto the wall surface of the connecting cavity 3-5. Meanwhile, as the drainage fins 3-33 on the fin partition plate 3-3 can guide air flow to enter the connecting cavity 3-5 in a close manner, rotary air flow is formed in a circle on the inner wall of the connecting cavity 3-5, and urea with smaller particles is prevented from being coated on the inner wall of the connecting cavity 3-5, so that urea is accumulated. The rotating gas stream brings urea into the turbine blade assembly 3-4. And further the rotational effect of the airflow by the blade gaps 3-43 between adjacent blades 3-41 in the turbine blade assembly 3-4. Meanwhile, the 8 arc-shaped blades 3-41 and the crushing holes 3-44 at the top ends of the arc-shaped blades crush large-particle urea positioned in the middle of urea spray, so that urea decomposition is greatly accelerated. The urea particles generated by crushing are more easily influenced by the airflow, so that the urea, the soot and the airflow are fused and rotated. Since the gas stream rotates along the inner wall, a large amount of small particle urea should be at the periphery of the urea spray. The SDPF has a requirement for the distribution of urea particles in the gas and soot in the exhaust gas to be as uniform as possible, preventing excessive particle distribution at the edge. In order to ensure that urea and soot at the front end of the SDPF can be uniformly distributed, and simultaneously prevent excessive accumulation of soot at the edge position of the SDPF, the conical pore plates 3-6 are gradually and tightly arranged from outside to inside to form a diversion hole 3-61 and a central gathering hole 3-62 for guiding the rotary airflow, the soot and the urea to gather towards the center, so that the effect of double-effect uniform mixing is achieved.
After the uniformly mixed urea and soot enter the SDPF assembly 5, the NOx conversion efficiency of the SDPF assembly 5 can be greatly improved, and the trapping efficiency of the soot can be improved.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present application, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the application, and are also considered to be within the scope of the application.
Claims (6)
1. The tight coupling type urea carbon smoke double-effect mixing device for the SDPF is characterized by comprising an air inlet component (1), a DOC component (2), a tight coupling type urea carbon smoke double-effect mixing device (3), an expansion pipe (4), an SDPF component (5) and an air outlet component (6) which are connected in sequence; the tight coupling type urea carbon smoke double-effect mixing device (3) comprises a connecting cavity (3-5), wherein the side surface of the upper part of the connecting cavity (3-5) is a cavity input end, the side surface of the lower part of the connecting cavity is a cavity output end, a nozzle base (3-2) is arranged on the upper part of the connecting cavity (3-5), a urea nozzle (3-1) is fixed on the nozzle base (3-2), fin baffle plates (3-3) are welded in the cavity output end and the air outlet end of the DOC component (2), a turbine blade component (3-4) is arranged at the middle neck part of the connecting cavity (3-5), and a conical pore plate (3-6) is arranged at the cavity output end; welding convex points (3-31) are arranged on the upper part of the fin partition plate (3-3), a flanging (3-32) is arranged at the bottom of the fin partition plate (3-3), and drainage fins (3-33) and sealing fins (3-34) are respectively arranged on the left side and the right side of the fin partition plate (3-3); the left side drainage fins (3-33) are shorter, and the right side sealing fins (3-34) are longer; the lower part of the fin clapboard (3-3) is provided with a vent hole (3-36); pressure relief openings (3-35) are arranged on two sides of the lower part of the fin partition plate (3-3).
2. A close-coupled urea soot dual-effect mixing device for an SDPF according to claim 1, characterized in that the urea nozzle (3-1) is fixed to the nozzle base (3-2) by means of a connector clip.
3. The close-coupled urea soot dual-effect mixing device for SDPF of claim 1, wherein the turbine blade assembly (3-4) is bowl-shaped and comprises arc-shaped blades (3-41), the arc-shaped blades (3-41) are overlapped and arranged to be concave towards the center, a mixed gas through hole (3-42) is reserved in the middle, a blade gap (3-43) is reserved between adjacent blades (3-41), and crushing holes (3-44) are formed at the top ends of the blades (3-41).
4. A close-coupled urea soot dual-effect mixing device for an SDPF according to claim 3, characterized in that the vane gaps (3-43) taper from outside to inside and have horizontal and vertical angles.
5. The close-coupled urea soot double-effect mixing device for SDPF according to claim 1, wherein the conical orifice plate (3-6) is in a bucket shape, the diversion holes (3-61) are gradually and tightly arranged from outside to inside, and the gathering holes (3-62) are arranged in the middle of the conical orifice plate (3-6).
6. A close-coupled urea soot dual-effect mixing device for SDPF according to claim 1, characterized in that the lower part of the connecting chamber (3-5) is provided with a guiding surface (3-51).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110314738.5A CN113047928B (en) | 2021-03-24 | 2021-03-24 | A tight coupling formula urea carbon cigarette economic benefits and social benefits mixing arrangement for SDPF |
| PCT/CN2021/095409 WO2022198778A1 (en) | 2021-03-24 | 2021-05-24 | Tight-coupling-type urea and soot double-effect mixing device for sdpf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110314738.5A CN113047928B (en) | 2021-03-24 | 2021-03-24 | A tight coupling formula urea carbon cigarette economic benefits and social benefits mixing arrangement for SDPF |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113047928A CN113047928A (en) | 2021-06-29 |
| CN113047928B true CN113047928B (en) | 2023-10-03 |
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| CN202110314738.5A Active CN113047928B (en) | 2021-03-24 | 2021-03-24 | A tight coupling formula urea carbon cigarette economic benefits and social benefits mixing arrangement for SDPF |
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| CN (1) | CN113047928B (en) |
| WO (1) | WO2022198778A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404574A (en) * | 2021-07-21 | 2021-09-17 | 无锡威孚力达催化净化器有限责任公司 | Mixer guide plate structure |
| CN113685251A (en) * | 2021-09-27 | 2021-11-23 | 无锡威孚力达催化净化器有限责任公司 | SCR tight coupling mixer |
| CN114412618B (en) * | 2022-01-27 | 2024-01-02 | 无锡威孚力达催化净化器有限责任公司 | Near-wall blowing urea mixing device without crushing structure |
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| DE202012011764U1 (en) * | 2012-12-07 | 2013-01-30 | Eberspächer Catem Gmbh & Co. Kg | Mixer for aftertreatment of exhaust gases |
| DE102014223382A1 (en) * | 2014-11-17 | 2016-05-19 | Robert Bosch Gmbh | Method for operating a device for aftertreatment of the exhaust gases of an internal combustion engine and corresponding device |
| KR101498182B1 (en) * | 2014-11-25 | 2015-03-04 | 세종공업 주식회사 | Exhaust gas purification apparatus |
| US10086333B2 (en) * | 2015-02-24 | 2018-10-02 | Tenneco Automotive Operating Company Inc. | Dual auger mixing system |
| KR101669657B1 (en) * | 2015-03-13 | 2016-10-26 | 우신공업 주식회사 | Mixing apparatus for SCR on diesel particular filter |
| US10100700B2 (en) * | 2015-06-29 | 2018-10-16 | Tenneco Automotive Operating Company Inc. | Cantilevered flow distributing apparatus |
| DE102015222361A1 (en) * | 2015-09-18 | 2017-03-23 | Hyundai Motor Company | CATALYST FOR VEHICLE |
| CN211500765U (en) * | 2020-02-18 | 2020-09-15 | 罗伯特·博世有限公司 | Tail gas treatment assembly |
| CN111764987B (en) * | 2020-06-29 | 2023-10-13 | 东风商用车有限公司 | Post-treatment packaging SCR mixer system and treatment method thereof |
| CN111852627A (en) * | 2020-08-18 | 2020-10-30 | 无锡威孚力达催化净化器有限责任公司 | SDPF tightly-coupled U-shaped postprocessor and urea mixing device thereof |
-
2021
- 2021-03-24 CN CN202110314738.5A patent/CN113047928B/en active Active
- 2021-05-24 WO PCT/CN2021/095409 patent/WO2022198778A1/en active Application Filing
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| Publication number | Publication date |
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| WO2022198778A1 (en) | 2022-09-29 |
| CN113047928A (en) | 2021-06-29 |
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