CN206830275U - Engine exhaust post-processes mixing arrangement and exhaust post-treatment apparatus of engine - Google Patents
Engine exhaust post-processes mixing arrangement and exhaust post-treatment apparatus of engine Download PDFInfo
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- CN206830275U CN206830275U CN201720688869.9U CN201720688869U CN206830275U CN 206830275 U CN206830275 U CN 206830275U CN 201720688869 U CN201720688869 U CN 201720688869U CN 206830275 U CN206830275 U CN 206830275U
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Abstract
A kind of engine exhaust post-processes mixing arrangement, it includes the hybrid element in the downstream installed the mounting seat of urea nozzle and be located at the mounting seat along flow direction of exhaust gases, the urea nozzle to the engine exhaust post-process mixing arrangement in jet atomization urea droplets, the hybrid element is the urea droplets to be mixed with exhaust, the engine exhaust post processing mixing arrangement also includes heat pipe, further to increase the urea droplets evaporation and pyrolysis.It is arranged such, the utility model has stronger Crystallization.The utility model further relates to a kind of exhaust post-treatment apparatus of engine with the mixing arrangement.
Description
Technical field
A kind of engine exhaust post processing mixing arrangement and exhaust post-treatment apparatus of engine are the utility model is related to, is belonged to
Engine exhaust post-processing technology field.
Background technology
Current is all to reach urea droplets and the mixing of exhaust with blender metal structure in the industry.Generally, in blender
The structures such as middle setting porous plate, fin, allow the blender of urea droplets and metal structure to collide so that urea droplets are broken
Smaller drop is broken into, to be advantageous to evaporate and be pyrolyzed in metal surface.Present situation is due to the upgrading of Abgasgesetz so that current
Urea injection strategy is more radical, such as begins to larger urea injecting quantity under lower temperature, smaller extraction flow.
Here the relation of heat conservation be present, one is heat required for urea droplets evaporation and pyrolysis, one be exhaust from
Heat caused by upstream.Due to the radicalization of above-mentioned injection strategy, the carried total amount of heat of exhaust and urea liquid fully steam
The ratio between heat required for hair, pyrolysis constantly reduces.Make EER ratio hot to describe this to one inside industry
Relation between amount.In general, EER values are extremely low in the crystallization risk of 150 mixer described above.If EER is no so high, but
It is that its Crystallization can improve if by being optimized to the structure of blender, this is also industry portion big absolutely
The R＆D direction of branch company, i.e., how to optimize the structure design of blender.Income and this, some companies of industry can accomplish now
Crystallization risk during EER50 or so is relatively low.When EER is equal to 1 in theory, the heat exchange effect of the urea droplets inside exhaust and blender
Rate will reach 100% just can be with, it is clear that it can not be realized using the blender of conventional metal frames, the design of many companies,
Even EER, which is less than 50, all there are many crystallizations.
Therefore, it is necessary to a kind of new solution is provided to solve above-mentioned technical barrier.
Utility model content
The purpose of this utility model is to provide a kind of Crystallization stronger engine exhaust post processing mixing arrangement
And the exhaust post-treatment apparatus of engine with the mixing arrangement.
To achieve the above object, the utility model adopts the following technical scheme that：A kind of engine exhaust post processing mixing dress
Put, it includes the mixing in the downstream installed the mounting seat of urea nozzle and be located at the mounting seat along flow direction of exhaust gases
Element, the urea nozzle are described to post-process the urea droplets of jet atomization in mixing arrangement to the engine exhaust
For hybrid element the urea droplets to be mixed with exhaust, the engine exhaust post processing mixing arrangement also includes heat
Pipe, further to increase the urea droplets evaporation and pyrolysis.
As the further improved technical scheme of the utility model, the hybrid element includes mixing tube, the urea spray
Mouth to urea droplets from the jet atomization to the mixing tube；The heat pipe include extend into exhaust in the first extension with
And the second extension extended into the mixing tube, wherein first extension is absorbing delivery temperature and transmit rapidly
To second extension.
As the further improved technical scheme of the utility model, the heat pipe is including multiple, in rectangular.
As the further improved technical scheme of the utility model, the engine exhaust post processing mixing arrangement includes shell
Body, the mounting seat are formed or are fixed on the housing；The hybrid element also includes being socketed in the mixing tube periphery
And the dividing plate in the housing, the housing is divided into positioned at the first cavity of the side of the dividing plate and positioned at institute
The second cavity of the opposite side of dividing plate is stated, the part that the mixing tube is located in first cavity is provided with exhaust entrance.
As the further improved technical scheme of the utility model, the mixing tube is additionally provided with positioned at the exhaust entrance
Upstream and some perforation of the close mounting seat.
As the further improved technical scheme of the utility model, the mixing tube is in hollow tubular, its be provided with to
The assembly wall of the heat pipe is installed, the first extending part of the heat pipe is in the side of the assembly wall, and the second of the heat pipe
Extending part is in the opposite side of the assembly wall.
As the further improved technical scheme of the utility model, the dividing plate includes the first vertical portion and described first
The second opposite vertical portion of vertical portion bearing of trend and the connecting portion of connection first vertical portion and second vertical portion,
First vertical portion is resisted against the inner surface of the housing with second vertical portion, and the connecting portion is provided with for described mixed
Close pipe through perforate.
As the further improved technical scheme of the utility model, first vertical portion abuts in the outer of the mixing tube
On wall, the part that the mixing tube is located in second cavity is provided with air exit.
The utility model further relates to a kind of exhaust post-treatment apparatus of engine, and it includes above-mentioned engine exhaust post processing
Mixing arrangement and the selective catalytic reducing agent (SCR) positioned at the downstream of engine exhaust post processing mixing arrangement.
As the further improved technical scheme of the utility model, the exhaust post-treatment apparatus of engine also includes being located at
The upstream of the engine exhaust post processing mixing arrangement and the diesel oxidation catalyst (DOC) and diesel particulate being sequentially connected in series
Trap (DPF).
Compared to prior art, the utility model is by the extremely strong heat-transfer character of heat pipe, by the heat in engine exhaust
It is delivered to as much as possible in the jeting area of urea droplets, the evaporation and pyrolysis to urea droplets provide excellent temperature ring
Border, so as to improve Crystallization.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the utility model exhaust post-treatment apparatus of engine.
Fig. 2 is Fig. 1 part isometric exploded view.
Fig. 3 is the further three-dimensional exploded views of Fig. 2.
Fig. 4 is the stereogram of engine exhaust post processing mixing arrangement in Fig. 3.
Fig. 5 is Fig. 4 left view.
Fig. 6 is Fig. 4 right view.
Fig. 7 is the diagrammatic cross-section of line A-A in Fig. 4.
Fig. 8 is to remove the stereogram in Fig. 4 after housing.
Fig. 9 is Fig. 4 three-dimensional exploded view.
Figure 10 is the three-dimensional exploded view of another angles of Fig. 9.
Embodiment
It please join shown in Fig. 1 to Figure 10, the utility model discloses a kind of exhaust post-treatment apparatus of engine 100, for example
To handle the tail gas of engine in such as SCR after-treatment systems.The exhaust post-treatment apparatus of engine 100 is arranged including engine
Gas post processing mixing arrangement 10, the diesel oil oxygen for post-processing the upstream of mixing arrangement 10 positioned at the engine exhaust and being sequentially connected in series
Change catalyst converter (DOC) 20 and diesel particulate trap (DPF) 30 and post-process mixing arrangement positioned at the engine exhaust
The selective catalytic reducing agent (SCR) 40 in 10 downstream.
The engine exhaust post processing mixing arrangement 10 includes housing 1, the hybrid element 2 being installed in the housing 1
And to the further heat pipe 3 of the evaporation of increase urea droplets and pyrolysis.
In the utility model embodiment illustrated, the housing 1 is cylindrical, and it is provided with to the indent of housing 1
Sunken installing plate 11 and the mounting seat 12 for being formed or being fixed on the housing 1.In the embodiment party of the utility model diagram
In formula, the mounting seat 12 is welded on the installing plate 11.The hybrid element 2 is located at the installation along flow direction of exhaust gases
The downstream of seat 12.The mounting seat 12 is mixed to install urea nozzle (not shown) with being post-processed to the engine exhaust
The urea droplets of jet atomization in device 10.
The hybrid element 2 is the urea droplets to be mixed with exhaust.In the implementation of the utility model diagram
In mode, the hybrid element 2 includes mixing tube 21 and is socketed in the periphery of mixing tube 21 and is located in the housing 1
Dividing plate 22.The urea nozzle to urea droplets from the jet atomization to the mixing tube 21.In the utility model diagram
In embodiment, the dividing plate 22 by the housing 1 be divided into positioned at the side of the dividing plate 22 the first cavity 110 and be located at
Second cavity 120 of the opposite side of the dividing plate 22.
The mixing tube 21 is in hollow tubular, wherein its be located at part in first cavity 110 be provided be vented into
Mouth 211, some perforation 212 positioned at the upstream of the exhaust entrance 211 and the close mounting seat 12.The exhaust entrance
211 are connected with the perforation 212 with first cavity 110.The mixing tube 21 is located in second cavity 120
Part is provided with air exit 213.In addition, the mixing tube 21 is additionally provided with the assembly wall in first cavity 110
214。
The dividing plate 22 is substantially Z-shape, it include the first vertical portion 221, with the bearing of trend phase of the first vertical portion 221
The second anti-vertical portion 222 and the connecting portion 223 of connection first vertical portion 221 and second vertical portion 222, wherein
First vertical portion 221 is resisted against the inner surface of the housing 1 with second vertical portion 222, and the connecting portion 223 is set
There is the perforate 224 passed through for the mixing tube 21.First vertical portion 221 is abutted on the outer wall 215 of the mixing tube 21.
Hot pipe technique is George Ge Luofo of U.S. Los Alamos (Los Alamos) National Laboratory in 1963
One kind of (George Grover) utility model is referred to as the heat transfer element of " heat pipe ", and it takes full advantage of heat-conduction principle and phase
Become the quick thermal transport property of medium, be delivered to the heat of thermal objects outside thermal source rapidly through heat pipe, its capacity of heat transmission surpasses
Cross the capacity of heat transmission of any known metal, vapour, liquid phase-change heat transfer of the inside heat pipe mainly by hydraulic fluid, thermal resistance very little, therefore
With the very high capacity of heat transmission.The heat of several orders of magnitude can be transmitted with metal phase ratio, the heat pipes of Unit Weight such as silver, copper, aluminium more
Amount.
In the utility model embodiment illustrated, the heat pipe 3 includes multiple, and in rectangular, heat is collected with lifting
The ability of amount.The heat pipe 3 is fixed on the assembly wall 214.The heat pipe 3 includes the first extension extended into exhaust
31 and the second extension 32 for extending into the mixing tube 21, wherein first extension 31 is absorbing delivery temperature
And second extension 32 is transferred to rapidly.It please join shown in Fig. 7 and Fig. 8, first extension 31 is located at the assembly wall
214 side, second extension 32 are located at the opposite side of the assembly wall 214.
The utility model can solve the problem that the crystallisation problems of urea under low flow low temperature amount exhaust operating mode, mixed with improving exhaust
Heat exchange efficiency in element 2 is break-through point.In addition, in the case of the utility model hybrid element 2 is less in space, also being capable of pole
The earth improves heat exchange efficiency.
When the exhaust of engine enters the first cavity 110, now delivery temperature is of a relatively high, and heat pipe 3 prolongs by first
Extending portion 31, higher temperature is transferred to second extension 32 rapidly, so as to form higher temperature in mixing tube 21
Environment.Under the stop of dividing plate 22, the overwhelming majority is entered in mixing tube 21 from exhaust entrance 211 for exhaust, sub-fraction exhaust
Entered through perforation 212 in mixing tube 21.When reaching injection conditions, the urine of urea nozzle jet atomization into mixing tube 21
The exhaust of plain drop, urea droplets and engine is mixed together and is formed down double vortex (doubleswirl), and passes through exhaust
Outlet 213 is entered in the second cavity 120.In the process, heat pipe 3 provides higher temperature environment, is greatly promoted
The evaporation and pyrolysis of urea droplets, reduce the probability of urea crystals.Meanwhile it is double be vortexed add Urea Evaporation distance and when
Between, the uniformity that air-flow mixes is improved, also reduces the risk of urea crystals.In addition, it is centered around wearing near urea nozzle
Hole 212 can strengthen the air motion of urea nozzle end face, so as to reduce the risk of urea nozzle end face crystallization.
Compared to prior art, the utility model is ground-breaking to be applied to engine exhaust post processing mixing arrangement by heat pipe
In 10, the risk of urea crystals is significantly reduced, there is significant technological progress.
In addition, above example is merely to illustrate the utility model and not limits the technical side described by the utility model
Case, understanding of this description should be based on persons of ordinary skill in the field, although this specification is with reference to above-mentioned
Embodiment has been carried out being described in detail to the utility model, still, it will be understood by those within the art that, affiliated skill
Still the utility model can be modified by the technical staff in art field or equivalent substitution, and all do not depart from this practicality newly
The technical scheme of the spirit and scope of type and its improvement, it all should cover in right of the present utility model.
Claims (10)
1. a kind of engine exhaust post-processes mixing arrangement, it includes installing the mounting seat of urea nozzle and along exhaust stream
Dynamic direction is located at the hybrid element in the downstream of the mounting seat, and the urea nozzle is mixed to be post-processed to the engine exhaust
The urea droplets for putting middle jet atomization are attached together, for the hybrid element the urea droplets to be mixed with exhaust, it is special
Sign is：Engine exhaust post processing mixing arrangement also includes heat pipe, with further increase the urea droplets evaporation with
Pyrolysis.
2. engine exhaust as claimed in claim 1 post-processes mixing arrangement, it is characterised in that：The hybrid element includes mixed
Close pipe, the urea nozzle to urea droplets from the jet atomization to the mixing tube；The heat pipe includes extending into exhaust
In the first extension and the second extension for extending into the mixing tube, wherein first extension is absorbing row
Temperature degree is simultaneously transferred to rapidly second extension.
3. engine exhaust as claimed in claim 2 post-processes mixing arrangement, it is characterised in that：The heat pipe include it is multiple,
In rectangular.
4. engine exhaust as claimed in claim 2 post-processes mixing arrangement, it is characterised in that：Locate after the engine exhaust
Reason mixing arrangement includes housing, and the mounting seat is formed or is fixed on the housing；The hybrid element also includes socket
In mixing tube periphery and the dividing plate in the housing, the housing is divided into the positioned at the side of the dividing plate
Second cavity of one cavity and opposite side positioned at the dividing plate, the part that the mixing tube is located in first cavity is set
There is exhaust entrance.
5. engine exhaust as claimed in claim 4 post-processes mixing arrangement, it is characterised in that：The mixing tube is additionally provided with position
In the upstream of the exhaust entrance and close to some perforation of the mounting seat.
6. engine exhaust as claimed in claim 4 post-processes mixing arrangement, it is characterised in that：The mixing tube is in hollow
Tubular, it is provided with to install the assembly wall of the heat pipe, the first extending part of the heat pipe in the side of the assembly wall,
Second extending part of the heat pipe is in the opposite side of the assembly wall.
7. engine exhaust as claimed in claim 6 post-processes mixing arrangement, it is characterised in that：It is perpendicular that the dividing plate includes first
Straight portion, second vertical portion opposite with first vertical portion bearing of trend and connection first vertical portion and described second
The connecting portion of vertical portion, first vertical portion are resisted against the inner surface of the housing, the company with second vertical portion
Socket part is provided with the perforate passed through for the mixing tube.
8. engine exhaust as claimed in claim 7 post-processes mixing arrangement, it is characterised in that：First vertical portion reclines
On the outer wall of the mixing tube, the part that the mixing tube is located in second cavity is provided with air exit.
9. a kind of exhaust post-treatment apparatus of engine, it includes the engine row as described in any one in claim 1 to 8
Gas post-processes mixing arrangement and the selective catalytic reducing agent positioned at the downstream of engine exhaust post processing mixing arrangement
(SCR)。
10. exhaust post-treatment apparatus of engine as claimed in claim 9, it is characterised in that：The engine exhaust post processing
Device also includes the diesel oxidation catalyst for post-processing the upstream of mixing arrangement positioned at the engine exhaust and being sequentially connected in series
And diesel particulate trap (DPF) (DOC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720688869.9U CN206830275U (en) | 2017-06-14 | 2017-06-14 | Engine exhaust post-processes mixing arrangement and exhaust post-treatment apparatus of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720688869.9U CN206830275U (en) | 2017-06-14 | 2017-06-14 | Engine exhaust post-processes mixing arrangement and exhaust post-treatment apparatus of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206830275U true CN206830275U (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720688869.9U Active CN206830275U (en) | 2017-06-14 | 2017-06-14 | Engine exhaust post-processes mixing arrangement and exhaust post-treatment apparatus of engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018228084A1 (en) * | 2017-06-14 | 2018-12-20 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processing mixing apparatus, post-processing apparatus and application thereof |
-
2017
- 2017-06-14 CN CN201720688869.9U patent/CN206830275U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018228084A1 (en) * | 2017-06-14 | 2018-12-20 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processing mixing apparatus, post-processing apparatus and application thereof |
| CN109083722A (en) * | 2017-06-14 | 2018-12-25 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
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