CN209586473U - A kind of close-coupled post-processing structure - Google Patents
A kind of close-coupled post-processing structure Download PDFInfo
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- CN209586473U CN209586473U CN201920355013.9U CN201920355013U CN209586473U CN 209586473 U CN209586473 U CN 209586473U CN 201920355013 U CN201920355013 U CN 201920355013U CN 209586473 U CN209586473 U CN 209586473U
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- dpf
- doc
- scr
- installation axle
- air inlet
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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 utility model provides a kind of close-coupled post-processing structure, is contacted and is formed by DOC component, DPF component and SCR component.The DOC component includes DOC uniformity mixing chamber, DOC catalyst converter and DOC mixer, and the DOC uniformity mixing chamber is equipped with DOC air inlet pipe, and the DOC mixer is equipped with the first urea nozzle and DOC escape pipe.The DPF component includes DPF uniformity mixing chamber, DPF catalyst converter and DPF air outlet end cone, and the DPF uniformity mixing chamber is equipped with DPF air inlet pipe, and the DPF air inlet pipe is connect with the DOC escape pipe, and the DPF air outlet end cone is equipped with DPF escape pipe.The SCR component includes SCR mixer, SCR catalyst, tail cone, and the SCR mixer is equipped with the second urea nozzle and SCR air inlet pipe, and the SCR air inlet pipe is connect with the DPF escape pipe.The utility model is sufficiently mixed gas to be processed and urea uniformly to guarantee SCR clean-up effect.
Description
Technical field
The utility model relates to vehicle maintenance service field, especially a kind of close-coupled post-processes structure.
Background technique
The diesel engine after treatment structure of vehicle is used to carry out purified treatment, diesel engine after treatment structure to the tail gas of diesel engine
It is several to generally comprise DOC (oxidation catalyzer), DPF (diesel particulate trap), SCR (selective catalytic reduction device).
In vehicle exhaust post-processing, the uniformity coefficient of ammonia in gas to be processed distribution is to the overall performance of system and durable
Performance has important influence, if its structure it is unreasonable cause ammonia be unevenly distributed will lead to oxynitrides (NOx) conversion
Efficiency is too low.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of close-coupled post-processing structure, by DOC component,
DPF component and SCR component set become a compact overall structure, and ammonia (NH3) and gas to be processed can be made sufficiently mixed
It closes uniformly to guarantee clean-up effect.
The specific technical solution of the utility model is as follows:
A kind of close-coupled post-processing structure, is successively contacted and is formed by DOC component, DPF component and SCR component, in which:
The DOC component successively includes DOC uniformity mixing chamber, DOC catalyst converter and DOC mixer, the DOC uniformity
Mixing chamber is equipped with DOC air inlet pipe, and the DOC mixer is equipped with the first urea nozzle and DOC escape pipe；
The DPF component successively includes DPF uniformity mixing chamber, DPF catalyst converter and DPF air outlet end cone, and the DPF is uniform
Property mixing chamber be equipped with DPF air inlet pipe, the DPF air inlet pipe connect with the DOC escape pipe, sets on the DPF air outlet end cone
There is DPF escape pipe；
The SCR component successively includes SCR mixer, SCR catalyst, tail cone, and the SCR mixer is equipped with the second urine
Plain nozzle and SCR air inlet pipe, the SCR air inlet pipe are connect with the DPF escape pipe.
In certain embodiments, the DPF air inlet pipe and the DOC escape pipe, the SCR air inlet pipe with it is described
DPF escape pipe is to be detachably connected.
In certain embodiments, the DOC uniformity mixing chamber, the DOC catalyst converter and the DOC mixer according to
Secondary to be arranged in the first installation axle, the injection direction of first urea nozzle is perpendicular to first installation axle；The DPF is equal
Even property mixing chamber, the DPF catalyst converter and the DPF air outlet end cone are successively arranged in the second installation axle；The SCR mixing
Device, the SCR catalyst, the tail cone are successively arranged in third installation axle, and the injection direction of second urea nozzle hangs down
Directly in the third installation axle.
In certain embodiments, second installation axle is located at the underface of first installation axle, the third
Installation axle is located at the lower section of second installation axle and is staggered with second installation axle, first installation axle, described second
Installation axle and the third installation axle are arranged in parallel.
Compared with post-processing structure in the prior art, close-coupled post-processing structure provided by the utility model has as follows
Technical effect: 1, DOC component, DPF component and SCR component set are become a compact overall structure by it, to cater to compact vehicle
The installation space of type；2, it sets there are two urea mixer (DOC mixer and SCR mixer) and two urea injectors, urinates
Element is mixed into two times into gas to be processed, so that gas to be processed and urea are sufficiently mixed uniformly, finally improves ammonia
Uniformity in gas to be processed.
Detailed description of the invention
It, below will be to required practical in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be evident that the drawings in the following description are merely some embodiments of the present invention, it is right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
His attached drawing.Wherein,
Fig. 1 is the three-dimensional structure diagram in the utility model embodiment；
Fig. 2 is the sectional structure chart in the utility model embodiment；
Fig. 1 includes: into Fig. 2
DOC component 1, DOC uniformity mixing chamber 101, DOC catalyst converter 102, DOC mixer 103, DOC air inlet pipe 104,
One urea nozzle 105, DOC escape pipe 106；
DPF component 2, DPF uniformity mixing chamber 201, DPF catalyst converter 202, DPF air outlet end cone 203, DPF air inlet pipe 204,
DPF escape pipe 205；
SCR component 3, SCR mixer 301, SCR catalyst 302, tail cone 303, the second urea nozzle 304, SCR air inlet pipe
305；
First connecting flange 4；
Second connecting flange 5.
Specific embodiment
For make the utility model above objects, features, and advantages, can be more obvious and easy to understand, with reference to the accompanying drawing and tool
Body embodiment is described in further detail the utility model.
It please refers to shown in Fig. 1 to Fig. 2, in one embodiment, close-coupled provided by the utility model post-processes structure
It is successively contacted by DOC component 1, DPF component 2 and SCR component 3 and is formed.Wherein:
The DOC component 1 successively includes DOC uniformity mixing chamber 101, DOC catalyst converter 102 and DOC mixer 103, institute
DOC uniformity mixing chamber 101 is stated equipped with DOC air inlet pipe 104, the DOC mixer 103 is equipped with the first urea nozzle 105
And DOC escape pipe 106.
Gas to be processed is entered in the uniformity mixing chamber 101 through DOC air inlet pipe 104 and is mixed in the uniformity
It is uniformly mixed in chamber 101.Uniformly mixed gas to be processed flows into the DOC catalyst converter 102, in metal or ceramic catalytic
Under the catalysis of agent, hydrocarbon, carbon monoxide in gas to be processed etc. are chemically reacted with oxygen, are generated free of contamination
H2O and CO2.Then, by DOC, treated that gas flows into DOC mixer 103, at the same time the first urea spray
Mouth 105 sprays into misty urea to the DOC mixer 103, and gas to be processed meets and mixes with urea, most passes through afterwards
DOC escape pipe 106 leaves the DOC component 1.
In some preferred embodiments, the DOC uniformity mixing chamber 101, the DOC catalyst converter 102 and the DOC are mixed
Clutch 103 is successively arranged in the first installation axle, and the injection direction of first urea nozzle 105 is perpendicular to first installation
Axis.The injection direction square crossing of the flow direction and urea that enable to gas to be processed is arranged such, so that gas to be processed
Body can be realized with urea and more fully mix, to further promote uniformity of the ammonia in gas to be processed.
The DPF component 2 successively include DPF uniformity mixing chamber 201, DPF catalyst converter 202 and DPF air outlet end cone 203,
The DPF uniformity mixing chamber 201 is equipped with DPF air inlet pipe 204, and the DPF air inlet pipe 204 connects with the DOC escape pipe 106
It connects, the DPF air outlet end cone 203 is equipped with DPF escape pipe 205.Further, in some preferred embodiments, the DPF is equal
Even property mixing chamber 201, the DPF catalyst converter 202 and the DPF air outlet end cone 203 are successively arranged in the second installation axle.
The DPF uniformity mixing chamber is entered to through the DPF air inlet pipe 204 with the mixed gas to be processed of urea
It is further uniformly mixed in 201 and in the DPF uniformity mixing chamber 201.Gas to be processed after mixing flows into institute
It states in DPF catalyst converter 202, particulate matter therein is captured to realize further purification by the DPF catalyst converter 202.Then, it passes through
Treated that gas flows into the DPF air outlet end cone 203 and finally leaves the DPF group through the DPF escape pipe 205 by DPF
Part 2.
The SCR component 3 successively includes SCR mixer 301, SCR catalyst 302, tail cone 303, the SCR mixer
301 are equipped with the second urea nozzle 304 and SCR air inlet pipe 305, and the SCR air inlet pipe 305 connects with the DPF escape pipe 205
It connects.
It is same with this by entering in the SCR mixer 301 through DPF treated gas through the SCR air inlet pipe 305
The second urea nozzle of Shi Suoshu 304 sprays into misty urea to the SCR mixer 301, gas to be processed with again
It meets and mixes with urea.Then, it is flowed into the SCR catalyst 302 by the gas to be processed that secondary urea mixes, In
Under the catalysis of SCR catalyst, reduction reaction occurs for the NOX in gas to be processed to be converted to N2 to realize that depth is net with ammonia
Change.Finally, being discharged by SCR treated gas through the tail cone 303.
In some preferred embodiments, the SCR mixer 301, the SCR catalyst 302, the tail cone 303 be successively
It is arranged in third installation axle, the injection direction of second urea nozzle 304 is perpendicular to the third installation axle.Likewise,
Be arranged such enable to gas to be processed flow direction and urea injection direction square crossing so that gas to be processed with
Urea, which can be realized, more fully to be mixed, and uniformity of the ammonia in gas to be processed is further promoted.
Further, second installation axle is located at the underface of first installation axle, and the third installation axle is located at
The lower section of second installation axle is simultaneously staggered with second installation axle, first installation axle, second installation axle and institute
Third installation axle is stated to be arranged in parallel.So set, the gas flow channel of the utility model is made substantially to be in " S " type, one side
Face is able to extend the length of gas flow channel, and air-flow is on the other hand enabled to generate disturbance in flow process, thus into
One step improves the clean-up effect of the utility model.
Compared with post-processing structure in the prior art, close-coupled post-processing structure provided by the utility model has as follows
Technical effect: 1, DOC component, DPF component and SCR component set are become a compact overall structure by it, to cater to compact vehicle
The installation space of type；2, it sets there are two urea mixer (DOC mixer and SCR mixer) and two urea injectors, urinates
Element is mixed into two times into gas to be processed, so that gas to be processed and urea are sufficiently mixed uniformly, finally improves ammonia
Uniformity in gas to be processed.
For convenience the close-coupled post-processing structure installation and maintenance, further, the DPF component 2 with it is described
It is to be detachably connected between DOC component 1 and the SCR component 3 and the DPF component 2.For example, as shown in Figure 1, some
In specific embodiment, is connected between the DPF air inlet pipe 204 and the DOC escape pipe 106 through the first connecting flange 4, is described
SCR air inlet pipe 305 is detachably connected with the DPF escape pipe 205 through the second connecting flange 5.
The description with certain particularity detailed enough has been carried out to the utility model above.It is common in fields
It is to be understood by the skilled artisans that the description in embodiment is only exemplary, without departing from the utility model true spirit and
All changes are made under the premise of range all should belong to the protection scope of the utility model.The utility model is claimed
Range is to be defined by described claims, rather than limited by the foregoing description in embodiment.
Claims (4)
1. a kind of close-coupled post-processes structure, which is characterized in that it is successively contacted shape by DOC component, DPF component and SCR component
At, in which:
The DOC component successively includes DOC uniformity mixing chamber, DOC catalyst converter and DOC mixer, the DOC uniformity mixing
Chamber is equipped with DOC air inlet pipe, and the DOC mixer is equipped with the first urea nozzle and DOC escape pipe；
The DPF component successively includes DPF uniformity mixing chamber, DPF catalyst converter and DPF air outlet end cone, and the DPF uniformity is mixed
It closes chamber and is equipped with DPF air inlet pipe, the DPF air inlet pipe is connect with the DOC escape pipe, and the DPF air outlet end cone is equipped with DPF
Escape pipe；
The SCR component successively includes SCR mixer, SCR catalyst, tail cone, and the SCR mixer is sprayed equipped with the second urea
Mouth and SCR air inlet pipe, the SCR air inlet pipe are connect with the DPF escape pipe.
2. close-coupled as described in claim 1 post-processes structure, it is characterised in that: the DPF air inlet pipe and the DOC outlet
Pipe, the SCR air inlet pipe and the DPF escape pipe are to be detachably connected.
3. close-coupled as described in claim 1 post-processes structure, it is characterised in that:
The DOC uniformity mixing chamber, the DOC catalyst converter and the DOC mixer are successively arranged in the first installation axle, institute
The injection direction of the first urea nozzle is stated perpendicular to first installation axle；
The DPF uniformity mixing chamber, the DPF catalyst converter and the DPF air outlet end cone are successively arranged in the second installation axle；
The SCR mixer, the SCR catalyst, the tail cone are successively arranged in third installation axle, the second urea spray
The injection direction of mouth is perpendicular to the third installation axle.
4. close-coupled as claimed in claim 3 post-processes structure, it is characterised in that: second installation axle is located at described first
The underface of installation axle, the third installation axle are located at the lower section of second installation axle and are staggered with second installation axle,
First installation axle, second installation axle and the third installation axle are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355013.9U CN209586473U (en) | 2019-03-20 | 2019-03-20 | A kind of close-coupled post-processing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920355013.9U CN209586473U (en) | 2019-03-20 | 2019-03-20 | A kind of close-coupled post-processing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586473U true CN209586473U (en) | 2019-11-05 |
Family
ID=68374429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920355013.9U Active CN209586473U (en) | 2019-03-20 | 2019-03-20 | A kind of close-coupled post-processing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209586473U (en) |
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2019
- 2019-03-20 CN CN201920355013.9U patent/CN209586473U/en active Active
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