CN205744074U - A kind of multichip carrier engine catalytic converter of micro-channel gradual change - Google Patents
A kind of multichip carrier engine catalytic converter of micro-channel gradual change Download PDFInfo
- Publication number
- CN205744074U CN205744074U CN201620575888.6U CN201620575888U CN205744074U CN 205744074 U CN205744074 U CN 205744074U CN 201620575888 U CN201620575888 U CN 201620575888U CN 205744074 U CN205744074 U CN 205744074U
- Authority
- CN
- China
- Prior art keywords
- carrier
- micro
- channel
- catalytic converter
- gradual change
- 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.)
- Expired - Fee Related
Links
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
This utility model relates to the multichip carrier engine catalytic converter of a kind of micro-channel gradual change, and wherein, the flow area of the micro-channel of carrier 4 incrementally increases from the inside to surface in cross section radial direction, and the form of the micro-channel of carrier 7 is identical with size；The gap of 3 ~ 8mm is left between carrier 4 carrier to be longer than 7, and two sections of carriers.After tail gas flows to catalytic converter, first pass through carrier 4 and make air-flow velocity tend to uniform, enter gap afterwards and mixing occurs and improves air flow method further, finally enter carrier 7 and again carry out catalytic action.This utility model improves the uniformity of exhaust gas flow distribution, makes carrier center region catalyst be unlikely to accelerated ageing, extends the service life of catalytic converter, improves the utilization rate of edge catalyst, and will not produce bigger horizontal thermal stress.It addition, tail gas respectively carries out a catalytic action on carrier 4 and carrier 7, improve the catalyzed conversion effect flowing through catalytic converter tail gas on the whole.
Description
Technical field
This utility model relates to the multichip carrier engine catalytic converter of a kind of micro-channel gradual change, belongs to engine exhaust
System regions, a kind of by the engine catalytic converter of multistage different structure vehicle group synthesis.
Background technology
Along with the progress of science and technology, auto industry is developed rapidly, and exhaust emissions amount is significantly increased the most therewith, makes
Become great air pollution.Meanwhile, the environmental consciousness of people progressively strengthens, and motor vehicle exhaust emission is also carried by law
Having gone out the highest requirement, therefore, the research for the catalytic converter processing motor exhaust both at home and abroad also gets more and more.
Engine catalytic converter when design, main consider of both factor: one is that the utilization rate of catalyst is i.e. urged
Change effect；Two is the distribution of the tail gas i.e. air-flow velocity of the flow behavior in catalytic converter and pressure characteristic.Wherein, air-flow velocity
Skewness, reduces the utilization rate directly making carrier inner catalyst, thus reduces catalytic effect.
At present, most of engine catalytic converters all select a kind of micro-channel be wait the triangle of flow area, four
The carrier of the polygon honeycomb-type structural such as limit shape, pentagon or hexagon.This carrier structure has certain logical gap ratio, can protect
Card air-flow has certain exposure level with carrier, but, during this carrier of airflow passes, often lead to air-flow velocity skewness
Even, make that carrier center regional gas stream speed is fast and temperature is high, and carrier edge air velocity is slow and temperature is low.Velocity Profiles
Uneven, on the one hand accelerate the aging of carrier center region catalyst in catalytic converter, on the other hand but make carrier edge
The catalyst in region can not get Appropriate application and reduces catalyst utilization.Meanwhile, air-flow velocity skewness will cause carrying
Body radial symmetry gradient is relatively big, makes carrier laterally create bigger thermal stress, shortens the service life of catalytic converter.
For case above, existing research worker proposes several solution: one is in engine catalytic converter
Use multistage carrier axial arranging, remaining one section of relief area between adjacent carrier so that air velocity tends to synchronizing；Two be by
In engine catalytic converter, head and the afterbody of carrier make convex so that the radical length in carrier center region is more than edge
The radical length in region, to reduce the air-flow velocity in pipeline center region, obtains preferable flow distribution uniformity.
Although said method has certain feasibility, but can not obtain the air-flow velocity of distribution uniform, can not
Improve the catalytic effect of engine catalytic converter, add exhaust resistance and exhaust back pressure on the contrary, and be unfavorable for electromotor
Power performance.To this, the utility model proposes a kind of stable, airflow characteristic can be improved and improve starting of catalytic effect
Machine catalytic converter.
Utility model content
In order to solve motor exhaust flow through catalytic converter time, make that carrier center regional gas stream flow velocity is fast and temperature is high,
And carrier edge regional gas stream flow velocity is slow and temperature is low, thus central area catalyst accelerated ageing and carrier edge catalyst is sharp
And carrier cross section low by rate produces bigger thermal stress, the problem shortening catalytic converter service life, and this utility model provides
A kind of multichip carrier engine catalytic converter of micro-channel gradual change.
This utility model be the technical scheme is that
A kind of catalytic converter processing motor exhaust, it is characterised in that: at least it is distributed in catalytic converter housing
The carrier of two sections of different structures, wherein, near the micro-channel section morphology gradual change of the carrier of air inlet, and flow area exists
The radial direction of carrier cross section incrementally increases from the inside to surface, the inner-layer channel cross section that outer layer channel sectional area is more adjacent than it successively
Long-pending big 0.2 ~ 0.4mm2, and near the carrier of air vent, its micro-channel form on cross section is identical with size.Respectively
Leaving the gap of 3 ~ 8mm between Duan Zaiti axial arranging and each section of carrier, the tail gas flow to is buffered and mixes by this gap,
So that air-flow velocity more uniform distribution ground enters next section of carrier.
Further, in order to solve air-flow velocity problem pockety, on the basis of the above, this utility model have employed
The catalyst carrier of a kind of micro-channel gradual change, it is the first paragraph carrier near catalytic converter air inlet；This carrier micro-
Thin passage on radial section about centrosymmetry and micro-channel flow area deviate from central shaft in the radial direction by
Step increases, and after tail gas flows through this section of carrier, air-flow is by distribution uniform.
Further, the problem the highest in order to solve catalytic effect, this utility model have employed the form of a kind of micro-channel
The catalyst carrier that size is identical and its flow area is less, it is the latter end near catalytic converter air vent；This carrier
Micro-channel on radial section about centrosymmetry, the section morphology near the carrier micro-channel of air vent can be identical
Regular hexagon, triangle, tetragon and pentagonal configuration, and the flow area size of carrier is at 3 ~ 4mm2Between；Through leading portion
After carrier, the more uniform tail gas of air-flow velocity, in this section of carrier, acquisition is more fully catalyzed, thus improves catalyzed conversion
The catalytic effect of device.
Further, for improving the flow behavior of air-flow, described in this utility model, the length of each section of carrier is different；Should
Carrier in catalytic converter is arranged vertically and the length of carrier near air inlet position is more than near vent position
Carrier lengths；Wherein, the longest near the carrier of air inlet, relatively short near the carrier lengths of air vent；On the whole, this method fall
Low inlet pressure, and tail gas has been carried out complementarity catalysis one or more times, it is ensured that preferably catalytic effect.
Further, the carrier between air inlet and air vent two carrier, it is the shape of micro-channel in version
The big I of state identical also can gradual change, and its length is more changeable than the length of air vent carrier.
Further, the micro-channel of described several carriers, each parallel to the central shaft of catalyst carrier, makes tail gas at carrier
Cathetus flows, and to avoid bigger stagnation pressure, thus affects the power performance of electromotor.
Through technique scheme, this utility model compared with prior art have the advantage that is: when tail gas flows through close
After the carrier of the first paragraph micro-channel gradual change of engine catalytic converter air inlet, tail gas becomes air-flow distributed relatively uniformly,
Thus improve that carrier center region is the most aging, marginal area catalyst utilization is low, be easily generated asking of relatively larger transverse thermal stress
Topic, and inlet pressure when air-flow flows to is little；Meanwhile, carrier has carried out catalytic action for the first time to tail gas；Although
After first paragraph carrier, Velocity Profiles is relatively uniform, but has certain speed difference and there is a large amount of tail gas also
Do not obtain sufficiently catalytic effect, thus, at gap area, central area air-flow makes air-flow be sufficiently mixed to surrounding diffusion and further
The secondary uniformity improving velocity flow profile；Finally, tail gas flows through the carrier near air vent, carries out again complementarity catalysis at this and makees
With；This utility model not only increases the catalytic efficiency of engine catalytic converter, also extends its service life.
Accompanying drawing explanation
Fig. 1 is catalytic converter overall structure schematic diagram of the present utility model；
Fig. 2 is this utility model gradual change minuteness passage schematic diagram near air inlet position carrier；
Fig. 3 is this utility model identical minuteness passage schematic diagram near vent position carrier.
Detailed description of the invention
Now enumerate a kind of embodiment of the present utility model and combine accompanying drawing to carry out exemplary description.Although this practicality
Novel combination embodiment is described, but air-flow micro-channel form of the present utility model, size and arrangement be not by institute
State the restriction of scheme.
Below in conjunction with the accompanying drawings utility model is described in further details:
Multichip carrier engine catalytic converter for a kind of micro-channel gradual change described in the utility model, is illustrated in figure 1
Its overall schematic, 1 is expansion pipe, and 2 is metal shell, and 3 is interlayer overcoat, and 4 for micro-channel gradual change and coat catalyst painting
The carrier of layer, 5 is thermal insulating layer, and 6 is interlayer inner sleeve and liner, and 7 is that micro-channel is identical and coat the carrier of catalyst coat,
8 is collapsible tube.
Of the present utility model it is critical only that: engine catalytic converter uses multichip carrier and carrier axial arranging, wherein leans on
The carrier 4 of nearly air inlet is a kind of micro-channel gradual change the carrier coating catalyst coat, and the carrier 7 of close air vent is
A kind of micro-channel is identical and coats the carrier of catalyst coat.
Seeing Fig. 2, the micro-channel of carrier 4 is parallel to central shaft and is uniformly distributed to central passage surrounding and is radially cutting
About centrosymmetry on face；Wherein, the flow area of micro-channel incrementally increases to carrier edge diametrically, its minimum area
Not less than 3mm2；When this carrier of airflow passes, the air velocity flowing through central area can progressively slow down, near marginal area
Air-flow velocity can be accelerated so that the air-flow velocity of the central area and marginal area that flow through catalyst carrier tends to being uniformly distributed,
To improve central area catalyst accelerated ageing and the low problem of marginal area catalyst utilization, meanwhile, improve load
The uniformity of Temperature Distribution on body, it is to avoid produce bigger horizontal thermal stress, improve service life.
Seeing Fig. 3, the micro-channel of carrier 7 is parallel to central shaft and is distributed about centrosymmetry on radial section, but
It is that its each channel cross-section is identical regular hexagon and its flow area at 3 ~ 4mm2Between；After flowing through leading portion carrier,
When the equally distributed tail gas obtained flows through this carrier, owing to flow area is relatively small, tail gas and supported catalyst
It is fully contacted, improves the catalytic effect of catalytic converter.
In this programme, the length of carrier 4 is more than the length of carrier 7；After tail gas flows to catalytic converter, first pass through length
Longer carrier 4, tail gas fully improves its flow distribution uniformity in longer passage；Afterwards, tail gas enters gap, wherein
The air-flow in heart region is of a relatively high due to speed, thus distributes the uniformity improving air-flow velocity distribution further to surrounding, and
The air-flow of central area and marginal area is sufficiently mixed；Finally, to flow to the flow area of micro-channel less for tail gas
Carrier 7, is fully contacted and carries out second time catalytic reaction, be then discharged out catalytic converter.
Additionally, leave the gap of 3 ~ 8mm between each section of carrier；The catalyst of one layer of about 0.6 ~ 3mm is coated on each section of carrier
Active layer, to fully ensure that the catalytic action of catalyst.
This utility model not only covers listed scheme herein, as long as using contemplated methods of the present utility model and carrying out
Various improvement or the most improved and use other occasions broadly fall into this utility model institute coverage.
Claims (4)
1. the multichip carrier engine catalytic converter of a micro-channel gradual change, it is characterised in that: in catalytic converter housing
At least it is dispersed with the carrier of two sections of different structures, wherein, near the micro-channel section morphology gradual change of the carrier of air inlet and logical
Flow area incrementally increases from the inside to surface in the radial direction of carrier cross section, the internal layer that outer layer channel sectional area is more adjacent than it successively
Big 0.2 ~ the 0.4mm of channel cross-sectional area2, and near the carrier of air vent, its micro-channel form on cross section and size are complete
Exactly the same.
The multichip carrier engine catalytic converter of a kind of micro-channel gradual change the most according to claim 1, it is characterised in that:
Section morphology near the carrier micro-channel of air vent can be identical regular hexagon, triangle, tetragon and pentagon knot
Structure, and the flow area size of carrier is at 3 ~ 4mm2Between.
The multichip carrier engine catalytic converter of a kind of micro-channel gradual change the most according to claim 1, it is characterised in that:
The gap of 3 ~ 8mm is left between each section of carrier.
The multichip carrier engine catalytic converter of a kind of micro-channel gradual change the most according to claim 1, it is characterised in that:
Carrier in this catalytic converter is arranged vertically and the length of carrier near air inlet position is more than near vent position
Carrier lengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620575888.6U CN205744074U (en) | 2016-06-14 | 2016-06-14 | A kind of multichip carrier engine catalytic converter of micro-channel gradual change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620575888.6U CN205744074U (en) | 2016-06-14 | 2016-06-14 | A kind of multichip carrier engine catalytic converter of micro-channel gradual change |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744074U true CN205744074U (en) | 2016-11-30 |
Family
ID=57385621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620575888.6U Expired - Fee Related CN205744074U (en) | 2016-06-14 | 2016-06-14 | A kind of multichip carrier engine catalytic converter of micro-channel gradual change |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744074U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012172A (en) * | 2018-07-18 | 2018-12-18 | 深圳大学 | Catalyst furnace |
| CN112594041A (en) * | 2020-12-18 | 2021-04-02 | 湘潭大学 | Purification and noise elimination integrated engine catalytic converter based on negative Poisson ratio metamaterial |
| CN115045737A (en) * | 2022-07-11 | 2022-09-13 | 合肥神舟催化净化器股份有限公司 | Automobile exhaust purification catalyst carrier |
-
2016
- 2016-06-14 CN CN201620575888.6U patent/CN205744074U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012172A (en) * | 2018-07-18 | 2018-12-18 | 深圳大学 | Catalyst furnace |
| CN112594041A (en) * | 2020-12-18 | 2021-04-02 | 湘潭大学 | Purification and noise elimination integrated engine catalytic converter based on negative Poisson ratio metamaterial |
| CN115045737A (en) * | 2022-07-11 | 2022-09-13 | 合肥神舟催化净化器股份有限公司 | Automobile exhaust purification catalyst carrier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205744074U (en) | A kind of multichip carrier engine catalytic converter of micro-channel gradual change | |
| CN105089750B (en) | exhaust gas treatment device | |
| CN207989116U (en) | Exhaust gas post-treatment device | |
| CN204877615U (en) | Exhaust treatment appts | |
| CN106762051B (en) | Mixing tube and its exhaust gas treatment device | |
| CN110420560A (en) | A kind of SCR system reactor guiding device peculiar to vessel | |
| CN206987927U (en) | Exhaust aftertreatment mixing arrangement and its encapsulation | |
| CN211819593U (en) | SCR exhaust mixing device | |
| CN112682138B (en) | Motor vehicle exhaust converter with non-uniformly arranged microchannels and manufacturing method thereof | |
| CN106311068B (en) | Dynamic type blade mixer | |
| CN205779177U (en) | Electric hybrid module | |
| CN202273735U (en) | Automobile urea SCR (silicon controlled rectifier) system and static mixer | |
| CN109184863A (en) | A kind of SCR hybrid system and its SCR mixer | |
| CN206016937U (en) | Spoiler structure in for exhaust aftertreatment | |
| WO2023138506A1 (en) | Selective catalytic reduction (scr) system and engine | |
| CN104759281B (en) | A kind of preparation method of the composite oxide catalysts for purification diesel engine | |
| CN205714372U (en) | A kind of engine catalytic converter carrier of micro-channel cross section gradual change | |
| CN103628957A (en) | Hole-channel-staggering-type high-performance metal honeycomb carrier | |
| CN107537336B (en) | SCR method denitration flue gas blender | |
| WO2014190815A1 (en) | Hole/channel-staggered high-performance metal honeycomb substrate | |
| CN209586470U (en) | A kind of post-processing end is into structure | |
| CN110905644B (en) | Exhaust mixing device and engine | |
| CN204511591U (en) | A kind of coupled mode automobile three-way catalysts | |
| CN206309450U (en) | For the taper spoiler in exhaust aftertreatment and mixing disturbing flow device | |
| CN204239027U (en) | Exhaust gas treating device with flow adjustement device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20190614 |