CN208416657U - Engine exhaust post-processes mixing arrangement - Google Patents
Engine exhaust post-processes mixing arrangement Download PDFInfo
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- CN208416657U CN208416657U CN201821047034.6U CN201821047034U CN208416657U CN 208416657 U CN208416657 U CN 208416657U CN 201821047034 U CN201821047034 U CN 201821047034U CN 208416657 U CN208416657 U CN 208416657U
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- fine fibre
- fibre element
- engine exhaust
- post
- mixing arrangement
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Abstract
A kind of engine exhaust post-processing mixing arrangement, it includes tube body and in the tube body and will be vented the fine fibre element mixed with urea droplets, the inner chamber body that the tube body has inner wall and surrounded by the inner wall, wherein the fine fibre element is passed through with for the exhaust and the urea droplets, to further increase the broken and evaporation of the urea droplets.The fine fibre element is directly brazed in the inner wall.So set, on the one hand reducing manufacturing procedure, processing cost is reduced；On the other hand, by the integral braze-welded intensity for improving fine fibre element, its risk for deforming and damaging due to the impact by engine exhaust pulse is reduced.
Description
Technical field
The utility model relates to a kind of engine exhausts to post-process mixing arrangement, belong to engine exhaust post-processing technology neck
Domain.
Background technique
Have existed in the prior art makes urea droplets in steel wool using the porous structure of the fine fibres element such as steel wool
Inside adequately broken and contact occurs, to reduce the technical solution of urea crystals risk.Since steel wool structure is fluffy,
In order to fix the steel wool, metal strip bracket is often set, and the both ends of every metal strip are welded on the tube wall of mixing tube.Due to
Mixer works under the environment that temperature change is big, gas flow rates are high, metal strip pole under the impact of such heat and power
Easily it is broken.At the same time, the contact point of every metal strip and mixing tube is small, this one small pad is difficult to guarantee for a long time
The validity of welding, therefore metal strip is easy to that fracture occurs, falls off, so as to cause mixer failure.
Therefore, it is necessary to provide the novel solution of one kind to solve above-mentioned technical problem.
Utility model content
The purpose of this utility model is to provide a kind of simple engine exhausts of structure to post-process mixing arrangement.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of engine exhaust post-processing mixing dress
It sets comprising tube body and in the tube body and the fine fibre element mixed with urea droplets, institute will be vented
Tube body is stated with inner wall and the inner chamber body that is surrounded by the inner wall, wherein the fine fibre element with for the exhaust and
The urea droplets pass through, to further increase the broken and evaporation of the urea droplets；The direct pricker of fine fibre element
It is welded in the inner wall.
As the further improved technical solution of the utility model, the engine exhaust post-processing mixing arrangement includes using
With the mounting base of urea nozzle is installed and be located at along flow direction of exhaust gases the mounting base downstream mixing tube, the thin fibre
Dimension element is located at the downstream of the mixing tube along the flow direction of exhaust gases.
As the further improved technical solution of the utility model, if the mixing tube is additionally provided with close to the mounting base
Dry perforation.
As the further improved technical solution of the utility model, the mixing tube is in hollow cylindrical shape, the thin fibre
Dimension element is steel wool.
As the further improved technical solution of the utility model, the mixing tube is fabricated separately and engages with the tube body
Together.
As the further improved technical solution of the utility model, the mixing tube is inserted in the tube body and at least portion
Divide and compresses the fine fibre element.
As the further improved technical solution of the utility model, the fine fibre element is hard knot after the brazing
Structure.
Compared to the prior art, the support component of the not set any support fine fibre element of the utility model.So set,
On the one hand reduce manufacturing procedure, reduce processing cost, while also avoiding influence of the support component to urea crystals itself；
On the other hand, by the integral braze-welded intensity for improving fine fibre element, it is reduced due to the impact by engine exhaust pulse
The risk for deforming and damaging.
Detailed description of the invention
Fig. 1 is the stereoscopic schematic diagram of the utility model exhaust post-treatment apparatus of engine.
Fig. 2 is the part isometric exploded view of Fig. 1.
Fig. 3 is the further stereogram exploded view of Fig. 2.
Fig. 4 is the perspective view of engine exhaust post-processing mixing arrangement in Fig. 3.
Fig. 5 is the right view of Fig. 4.
Fig. 6 is the left view of Fig. 4.
Fig. 7 is the diagrammatic cross-section of line A-A in Fig. 4.
Fig. 8 is the stereoscopic schematic diagram after tube body and the assembling of fine fibre element.
Fig. 9 is the stereogram exploded view of Fig. 8.
Figure 10 is the diagrammatic cross-section of the line B-B along Fig. 8.
Specific 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, is used for example
The tail gas of engine is handled in such as SCR after-treatment system.The exhaust post-treatment apparatus of engine 100 is arranged including engine
The diesel oil oxygen that gas post-processes mixing arrangement 10, post-processes the upstream of mixing arrangement 10 positioned at the engine exhaust and be sequentially connected in series
Change catalyst converter (DOC) 20 and diesel particulate trap (DPF) 30 and be located at the engine exhaust and post-processes mixing arrangement
The selective catalytic reducing agent (SCR) 40 in 10 downstream.
The engine exhaust post-processing mixing arrangement 10 includes shell 1, the hybrid element 2 being installed in the shell 1
And the fine fibre element 3 to further increase urea droplets evaporation and pyrolysis.
In the utility model embodiment illustrated, the shell 1 is cylindrical, is equipped with to 1 indent of shell
Sunken mounting plate 11 and the mounting base 12 for being formed or being fixed on the shell 1.In the embodiment party of the utility model diagram
In formula, the mounting base 12 is welded on the mounting plate 11.The hybrid element 2 is located at the installation along flow direction of exhaust gases
The downstream of seat 12.The mounting base 12 is mixed to install urea nozzle (not shown) with post-processing to the engine exhaust
The urea droplets of jet atomization in device 10.
The hybrid element 2 is to mix the urea droplets with exhaust.In the implementation of the utility model diagram
In mode, the hybrid element 2 includes mixing tube 21 and is socketed in 21 periphery of mixing tube and is located in the shell 1
Partition 22.Urea droplets of the urea nozzle to the jet atomization into the mixing tube 21.It please join shown in Fig. 7, in this reality
With in novel embodiment illustrated, the shell 1 is divided into the first chamber positioned at the side of the partition 22 by the partition 22
Body 110 and the second cavity 120 positioned at the other side of the partition 22.
The mixing tube 21 be in hollow tubular, wherein its be located at the part in first cavity 110 equipped be vented into
Mouth 211, the upstream positioned at the exhaust entrance 211 and several perforation 212 close to the mounting base 12.The exhaust entrance
211 are connected with first cavity 110 with the perforation 212.The row of being formed between the hybrid element 2 and the shell 1
Gas outlet 213.In the utility model embodiment illustrated, the mixing tube 21 is capable of forming the mixed effect of double-cyclone,
To increase mixing distance, the risk of urea crystals is reduced.
It please join shown in Fig. 7 to Figure 10, the engine exhaust post-processing mixing arrangement 10 further includes tube body 4, the tube body 4
With inner wall 41 and the inner chamber body 42 surrounded by the inner wall 41.The fine fibre element 3 is directly brazed in the tube body 4
Inner wall 41.
The application further relates to a kind of method for manufacturing above-mentioned engine exhaust post-processing mixing arrangement 10, and this method includes
Following steps:
S1: tube body 4, the inner chamber body 42 that the tube body 4 has inner wall 41 and surrounded by the inner wall 41 are provided；
S2: provide structure fluffy fine fibre element 3；
S3: the fine fibre element 3 is filled in the inner chamber body 42；
S4: between the point and the fine fibre element 3 and the inner wall 41 that the fine fibre element 3 is contacted with each other
Gap applies and is covered with brazing material；
S5: the fine fibre element 3 and the tube body 4 are fixed together by soldering processes.
In another embodiment, the method for manufacturing above-mentioned engine exhaust post-processing mixing arrangement 10 includes as follows
Step:
S1: tube body 4, the inner chamber body 42 that the tube body 4 has inner wall 41 and surrounded by the inner wall 41 are provided；
S2: providing structure fluffy fine fibre element 3, wherein the fine fibre element 3 wound together with brazing material and
At；
S3: the fine fibre element 3 is filled in the inner chamber body 42；
S4: the fine fibre element 3 and the tube body 4 are fixed together by soldering processes.
Compared to the prior art, the support component of the not set any support fine fibre element 3 of the utility model.So set
It sets, on the one hand reduces manufacturing procedure, reduce processing cost, while also avoiding support component itself to the shadow of urea crystals
It rings；On the other hand, by the integral braze-welded intensity for improving fine fibre element 3, it is reduced because being rushed by engine exhaust pulse
The risk for hitting and deforming and damaging.
In the utility model embodiment illustrated, the mixing tube 21 is fabricated separately and is bonded on the tube body 4
Together.The mixing tube 21 is inserted in the tube body 4 and at least partly compresses the fine fibre element 3.
It please join shown in Fig. 9, in the utility model embodiment illustrated, the fine fibre element 3 is steel wool, described
Steel wool is located in the mixing tube 21.Certainly in other embodiments, the fine fibre element 3 is also possible to meshy steel wire
Or porous material of ceramics etc..
The utility model utilizes the 3D porous structure or multiple-void structure of fine fibre element 3 (such as steel wool), exhaust
And the urea droplets pass through the fine fibre element 3, keep urea droplets adequately broken on the surface of steel wool and internal generation
It is broken with mix.In addition, the line footpath due to steel wool is smaller, gap is complicated, and heat transfer area is big, is conducive to urea droplets and exhaust is sent out
Raw relatively adequately heat exchange improves Crystallization to be conducive to the evaporation and pyrolysis of urea droplets.By to fine fibre element
The adjusting of 3 density can correspondingly adjust the back pressure of system.
The structures such as antipriming pipe and fin in compared to the prior art, the line footpath of the fine fibre element 3 of the utility model is all
Very small (being, for example, less than 1mm), therefore can be to avoid the appearance of leeward, to reduce urea crystals risk.The utility model
This ground-breaking utility model not only solve the problems, such as low regime, but also solve the problems, such as heat exchange, there is essence outstanding
Property feature and significant progress.
In addition, above embodiments are merely to illustrate the utility model and not limit technical side described in the utility model
Case, understanding of this description should be based on persons of ordinary skill in the field, although this specification is referring to above-mentioned
Embodiment has been carried out detailed description to the utility model, still, those skilled in the art should understand that, affiliated skill
The technical staff in art field still can be modified or replaced equivalently the utility model, and all not depart from this practical new
The technical solution and its improvement of the spirit and scope of type, should all cover in the scope of the claims of the utility model.
Claims (7)
1. a kind of engine exhaust post-processes mixing arrangement comprising tube body and be located in the tube body and will be vented and
The fine fibre element that urea droplets are mixed, the inner chamber body that the tube body has inner wall and surrounded by the inner wall, wherein
The fine fibre element is passed through with for the exhaust and the urea droplets, to further increase the broken of the urea droplets
Broken and evaporation；It is characterized by: the fine fibre element is directly brazed in the inner wall.
2. engine exhaust as described in claim 1 post-processes mixing arrangement, it is characterised in that: after the engine exhaust
Reason mixing arrangement includes mounting base to install urea nozzle and the downstream for being located at the mounting base along flow direction of exhaust gases
Mixing tube, the fine fibre element is located at the downstream of the mixing tube along the flow direction of exhaust gases.
3. engine exhaust as claimed in claim 2 post-processes mixing arrangement, it is characterised in that: the mixing tube, which is additionally provided with, to be leaned on
Several perforation of the nearly mounting base.
4. engine exhaust as claimed in claim 3 post-processes mixing arrangement, it is characterised in that: the mixing tube is in hollow
Cylindrical shape, the fine fibre element are steel wool.
5. engine exhaust as claimed in claim 4 post-processes mixing arrangement, it is characterised in that: the mixing tube and the pipe
Body is fabricated separately and is bonded together.
6. engine exhaust as claimed in claim 5 post-processes mixing arrangement, it is characterised in that: the mixing tube is inserted in institute
It states in tube body and at least partly compresses the fine fibre element.
7. the engine exhaust as described in any one of claim 1 to 6 post-processes mixing arrangement, it is characterised in that: institute
State fine fibre element is hard structure after the brazing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821047034.6U CN208416657U (en) | 2018-07-03 | 2018-07-03 | Engine exhaust post-processes mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821047034.6U CN208416657U (en) | 2018-07-03 | 2018-07-03 | Engine exhaust post-processes mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208416657U true CN208416657U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821047034.6U Active CN208416657U (en) | 2018-07-03 | 2018-07-03 | Engine exhaust post-processes mixing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625957A (en) * | 2018-07-03 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its manufacturing method |
-
2018
- 2018-07-03 CN CN201821047034.6U patent/CN208416657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625957A (en) * | 2018-07-03 | 2018-10-09 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its manufacturing method |
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