CN207776948U - Flow apron, oxidation catalyzer and vehicle - Google Patents
Flow apron, oxidation catalyzer and vehicle Download PDFInfo
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- CN207776948U CN207776948U CN201721741944.XU CN201721741944U CN207776948U CN 207776948 U CN207776948 U CN 207776948U CN 201721741944 U CN201721741944 U CN 201721741944U CN 207776948 U CN207776948 U CN 207776948U
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- circle
- venthole
- flow apron
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- plate body
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a kind of flow apron, oxidation catalyzer and vehicle, the flow apron is adapted to mount to the arrival end of oxidation catalyzer, and includes：Plate body, the plate body are gradually tilted to airflow direction from outer thoughtful center, and the plate body is equipped with multiple ventholes, the different location for being at least partially disposed at the plate body radial direction in multiple ventholes.The flow apron of the utility model, can effectively be promoted air-flow by uniformity, help to promote the exhaust gas conversion efficiencies in oxidation catalyzer, and simple in structure, the space occupied is small.
Description
Technical field
The utility model belongs to the tail gas disposal technique field of vehicle, in particular to a kind of flow apron, has and is somebody's turn to do
The oxidation catalyzer of flow apron and vehicle with the oxidation catalyzer.
Background technology
With the continuous upgrading of automobile emission regulation, diesel engine has to rely on the skill that emission controls by improving combustion is combined with external purification
Art can be only achieved harsher laws and regulations requirement.Diesel engine outside purification technology, that is, post-processing technology includes mainly：Oxidation is urged
Change device (DOC), grain catcher (DPF), selective catalytic reduction device (SCR) etc..Tail gas is by entering DOC after emission controls by improving combustion
The oxidation of the pollutants such as CH, CO is carried out, then carries out the trap filter of particle through DPF, finally NOX is restored by SCR.In reality
During existing the utility model, inventor has found that in the related technology, uniformity is bad after tail gas enters DOC, leads to DOC's
The reaction efficiency of each region is inconsistent, seriously affects tail gas transformation efficiency, there are rooms for improvement.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries
Go out a kind of flow apron, the flow apron with effectively promoted air-flow by uniformity.
According to the flow apron of the utility model embodiment, the flow apron is adapted to mount to the entrance of oxidation catalyzer
End, and include：Plate body, the plate body are gradually tilted to airflow direction from outer thoughtful center, and the plate body is equipped with multiple
Venthole, the different location for being at least partially disposed at the plate body radial direction in multiple ventholes.
According to the flow apron of the utility model embodiment, can effectively be promoted air-flow by uniformity, contribute to
The exhaust gas conversion efficiencies in oxidation catalyzer are promoted, and simple in structure, the space occupied is small.
According to the flow apron of the utility model one embodiment, the venthole includes to arrange successively from inside to outside
1 circle to the n-th circle, wherein kth circle includes the venthole of multiple circumferentially spaced distributions, the ventilation orifice ring of kth circle
It is wound on outside the venthole of the circle of kth -1, k, n are positive integer, and n >=2, k=2 ..., n.
According to the flow apron of the utility model one embodiment, i-th circle each of the venthole shape it is identical and
Circulation area is identical, and i is positive integer, and the circulation area of i=1 ..., n, each of kth circle venthole are enclosed not less than kth -1
Each of the venthole circulation area, the number of the number of the venthole of kth circle more than the venthole that kth -1 is enclosed
Mesh.
According to the flow apron of the utility model one embodiment, the circulation area of each of the 1st circle venthole is big
It is identical in the circulation area of the circulation area of each of the 2nd circle venthole, the 2nd circle to each of the jth circle venthole,
The circulation area of each of the jth circle venthole is more than the circulation area of each of the circle of jth+1 venthole, and jth+1 is enclosed
Circulation area to each of the n-th circle venthole is identical, and j is positive integer, j-2 >=1, n-j-1 >=1.
According to the flow apron of the utility model one embodiment, the venthole and the described of the circle of kth -1 of kth circle are led to
Stomata is in staggered distribution radially.
According to the flow apron of the utility model one embodiment, the venthole is circle.
For utility model according to the flow apron of the utility model one embodiment, the periphery of the plate body has turning over for annular
Side, the flange are used to compress the end face of the catalytic carrier of the oxidation catalyzer.
According to the flow apron of the utility model one embodiment, the periphery of the flange is radially prolonged equipped with multiple
The connecting plate stretched, the connecting plate are suitable for being weldingly connected with the shell or catalytic carrier of the oxidation catalyzer.
The utility model also proposed a kind of oxidation catalyzer, include it is above-mentioned it is any as described in flow apron, it is described
Flow apron is installed on the catalytic carrier front end of the oxidation catalyzer, and the center of the plate body is towards close to the catalytic carrier
Direction protrusion.
Possessed advantage is identical compared with the existing technology with above-mentioned flow apron for the oxidation catalyzer, herein no longer
It repeats.
The utility model also proposed a kind of vehicle, include it is above-mentioned it is any as described in oxidation catalyzer.
Possessed advantage is identical compared with the existing technology with above-mentioned oxidation catalyzer for the vehicle, no longer superfluous herein
It states.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram according to the flow apron of the utility model embodiment in an axial direction；
Fig. 2 is the side view according to the flow apron of the utility model embodiment.
Reference numeral：
Flow apron 100,
Plate body 10, venthole 11, flange 20, connecting plate 30.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on ... shown in the drawings
Or position relationship, be merely for convenience of describing the present invention and simplifying the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more this feature.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Exhaust gas aftertreatment system according to the utility model embodiment is described below, exhaust gas aftertreatment system includes：Oxidation
Part of module in catalyst converter, grain catcher, selective catalytic reduction device.
Wherein, in the exhaust gas aftertreatment system of six system of state, oxidation catalyzer, grain catcher, selective catalytic reduction
Device sequentially arranges that flow apron 100 is mounted on the arrival end of oxidation catalyzer along the flow direction of exhaust gas；After the tail gas of five system of state
In reason system, oxidation catalyzer, selective catalytic reduction device is sequentially arranged along the flow direction of exhaust gas or oxidation catalyzer, particle are caught
Storage sequentially arranges that flow apron 100 is mounted on the arrival end of oxidation catalyzer along the flow direction of exhaust gas.
The exhaust gas aftertreatment system of the utility model embodiment can be used for diesel engine, such as six system of state
Exhaust gas aftertreatment system, after the exhaust gas of engine emission is by flow apron 100, the uniformity of air-flow radially everywhere is significantly
It improves, including the uniformity of air-flow flow velocity radially everywhere and component greatly improves, after air-flow passes through flow apron 100
Into the catalytic carrier of oxidation catalyzer, in the catalytic carrier of oxidation catalyzer oxygen occurs for the pollutants such as CH, CO in exhaust gas
Change reaction, since the mixed flow of flow apron 100 acts on, the reaction in the catalytic carrier of oxidation catalyzer everywhere is uniform, catalysis effect
Rate is high, and exhaust gas carries out the trap filter of particle through grain catcher again, is finally gone back to NOX by selective catalytic reduction device
It is former.
The oxidation catalyzer of the utility model embodiment includes flow apron 100, and flow apron 100 is installed on oxidation catalysis
The catalytic carrier front end of device, and the center of the plate body 10 of flow apron 100 is protruded towards close to the direction of catalytic carrier.Flow apron
100 can play the role of mixed flow so that the uniformity of air-flow radially everywhere greatly improves, including air-flow is each radially
The flow velocity at place and the uniformity of component greatly improve, and air-flow enters catalytic carrier after passing through flow apron 100.
Below with reference to Fig. 1-Fig. 2 descriptions according to the flow apron 100 of the utility model embodiment.
As Figure 1-Figure 2, oxidation catalysis is adapted to mount to according to the flow apron 100 of the utility model one embodiment
The arrival end of device, and flow apron 100 includes：Plate body 10, plate body 10 are gradually tilted to airflow direction from outer thoughtful center,
And plate body 10 is equipped with multiple ventholes 11, and the radial different location of plate body 10 is at least partially disposed in multiple ventholes 11.
It is understood that the circulating direction upper plate body 10 in air-flow is depressed structure, it is located on gas flow area
The venthole 11 that the air-flow of radial outside first passes through radial outside enters oxidation catalyzer, and the plate body 10 of the structure type can be equal
Weigh the component of flow velocity and gas radially everywhere of gas radially everywhere, flows into each region of oxidation catalyzer in this way
Exhaust gas it is more balanced, transformation efficiency is high, and flow apron 100 is directly mounted at the arrival end of oxidation catalyzer, is not take up additional
Space.
According to the flow apron 100 of the utility model embodiment, can effectively be promoted air-flow by uniformity, help
Exhaust gas conversion efficiencies in promotion oxidation catalyzer, and it is simple in structure, the space occupied is small.
According to the oxidation catalyzer of the utility model embodiment, gas flow uniformity is high, and exhaust gas conversion efficiencies are high, structure
Simply, it is easily assembled.
In some embodiments, as shown in Figure 1, venthole 11 includes the 1st circle to the n-th circle, wherein kth circle includes multiple
The venthole 11 of the venthole 11 of circumferentially spaced distribution, kth circle is looped around outside the venthole 11 of the circle of kth -1, and k, n are just
Integer, and n >=2, k=2 ..., n.In other words, the venthole 11 of kth circle is multiple, and multiple ventholes 11 of kth circle are around the
The venthole 11 of k-1 circles, for example the center of multiple ventholes 11 of kth circle can be positioned at the circumference of the same circle.
The shape of each venthole 11 of i-th circle is identical and circulation area is identical, and i is positive integer, i=1 ..., n, also
It is to say, the shape congruence of each venthole 11 of same circle, for example can all be circle, and diameter is equal.
The circulation area of each venthole 11 of kth circle is not less than the circulation area for each venthole 11 that kth -1 is enclosed, the
Number of the number of the venthole 11 of k circles more than the venthole 11 that kth -1 is enclosed.In other words, the circulation area of multiple ventholes 11
Not increasing from radially inner side to radial outside dullness along distributing position, the circulation area of the single venthole 11 of innermost circle is maximum,
The circulation area of the single venthole 11 of outmost turns is minimum.It is understood that the air velocity of inner ring is relatively large, by setting
The venthole 11 for setting above structure, can increase the air velocity of radial outside, to reduce the air velocity of radially inner and outer side
Difference.
In some embodiments, the circulation area of each venthole 11 of the 1st circle is more than each venthole 11 of the 2nd circle
The circulation area of circulation area, the 2nd circle to each venthole 11 of jth circle is identical, the circulating face of each venthole 11 of jth circle
Product is more than the circulation area for each venthole 11 that jth+1 is enclosed, the circulation area of the circle of jth+1 to each venthole 11 of the n-th circle
Identical, j is positive integer, j-2 >=1, n-j-1 >=1.In this way, it is possible to reduce the Dimension Types of venthole 11 lower molding difficulty.
Such as in Fig. 1, the venthole 11 of n=9, j=5, the 1st circle are 1, and are the circle of diameter 16mm, and the 2nd circle starts
Circulation area including the circle of multiple ventholes the 11, the 2nd to each venthole 11 of the 5th circle is identical, the ventilation of the 2nd circle to the 5th circle
Hole 11 is the circle of diameter 8mm, and the circulation area of the 6th circle to each venthole 11 of the 9th circle is identical, and the 6th circle is logical to the 9th circle
Stomata 11 is the circle of diameter 3.5mm.
Certainly, the circulation area of the venthole 11 between each circle can be all different, i.e. the circulation area edge of venthole 11
Dullness becomes smaller radial distributing position from inside to outside.
With reference to figure 1, the venthole 11 that the venthole 11 of kth circle is enclosed with kth -1 is in staggered distribution radially.In this way, air-flow
It is more preferable by performance, power loss of the air-flow at flow apron 100 is few.
With reference to figure 1, venthole 11 can be circle, and circular venthole 11 is good to the uniformity effects of air-flow, certainly, lead to
The shape of stomata 11 is not limited to circle, can also be other polygons such as triangle, rectangle.
As shown in Fig. 2, there is plate body 10 bow-shaped cross-section or plate body 10 can there is spherical crown tee section or other arcs to cut
The axial length in face, such plate body 10 is small, convenient for arrangement.
As Figure 1-Figure 2, the periphery of plate body 10 has the flange 20 of annular, the axis of the normal and plate body 10 of flange 20
Parallel, flange 20 is used to compress the end face of the catalytic carrier of oxidation catalyzer, and flange 20 can be used for the axis of flow apron 100
The periphery of positioning, flange 20 is equipped with multiple connecting plates 30 extended radially outward, such as three, and connecting plate 30 is suitable for and oxidation
The shell or catalytic carrier of catalyst converter are weldingly connected, in this way can be by the catalytic carrier collection of flow apron 100 and oxidation catalyzer
At setting, convenient for assembly.
In a specific embodiment of the utility model, the stainless steel part that flow apron 100 is integrated, plate body 10 has
It is the circle of 1 diameter 16mm to have the venthole 11 that 9 circle ventholes the 11, the 1st enclose, and the 2nd circle to the 9th circle includes respectively multiple along week
The circle that venthole 11 to the circle of venthole the 11, the 2nd to the 5th circle spaced apart is diameter 8mm, the venthole of the 6th circle to the 9th circle
11 be the circle of diameter 3.5mm, and the venthole 11 of the 2nd circle to the 9th circle is in staggered distribution radially.Flow apron 100 is welded on
The inlet end of oxidation catalyzer, inventor have found that, in the case where gas flow is 578kg/h, setting should by Experimental comparison
After flow apron 100, the gas flow uniformity of oxidation catalyzer is 0.945, and 5% or more is promoted compared with 0.898 without this structure.
The invention also discloses a kind of vehicle, the vehicle of the utility model embodiment has any of the above-described kind of embodiment
Oxidation catalyzer, the vehicle of the utility model embodiment can be diesel vehicle.According to the vehicle of the utility model embodiment, row
It is small to put pollution.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and objective, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (10)
1. a kind of flow apron (100), which is characterized in that the flow apron (100) is adapted to mount to entering for oxidation catalyzer
Mouth end, and include：Plate body (10), the plate body (10) gradually tilts to airflow direction from outer thoughtful center, and the plate
Body (10) is equipped with multiple ventholes (11), in multiple ventholes (11) to be at least partially disposed at the plate body (10) radial
Different location.
2. flow apron (100) according to claim 1, which is characterized in that the venthole (11) includes from inside to outside
The 1st to arrange successively is enclosed to the n-th circle, wherein kth circle includes the venthole (11) of multiple circumferentially spaced distributions, kth
The venthole (11) of circle is looped around the venthole (11) of the circle of kth -1 outside, and k, n are positive integer, and n >=2, k=
2 ..., n.
3. flow apron (100) according to claim 2, which is characterized in that each of i-th circle venthole (11)
Shape is identical and circulation area is identical, and i is positive integer, i=1 ..., n, the circulating face of each of kth circle venthole (11)
Product is not less than the circulation area of each of the circle of kth -1 venthole (11), and the number of the venthole (11) of kth circle is more than
The number for the venthole (11) that kth -1 is enclosed.
4. flow apron (100) according to claim 3, which is characterized in that each of the 1st circle venthole (11)
Circulation area is more than the circulation area of each of the 2nd circle venthole (11), the 2nd circle to each of the jth circle venthole
(11) circulation area is identical, and the circulation area of each of jth circle venthole (11) is described more than each of the circle of jth+1 logical
The circulation area of the circulation area of stomata (11), the circle of jth+1 to each of the n-th circle venthole (11) is identical, and j is just whole
Number, j-2 >=1, n-j-1 >=1.
5. flow apron (100) according to claim 2, which is characterized in that the venthole (11) of kth circle and kth-
The venthole (11) of 1 circle is in staggered distribution radially.
6. flow apron (100) according to claim 1, which is characterized in that the venthole (11) is circle.
7. the flow apron (100) according to any one of claim 1-6, which is characterized in that outside the plate body (10)
There is in week the flange (20) of annular, the flange (20) to be used to compress the end face of the catalytic carrier of the oxidation catalyzer.
8. flow apron (100) according to claim 7, which is characterized in that the periphery of the flange (20) is equipped with multiple
The connecting plate (30) extended radially outward, the connecting plate (30) are suitable for shell or catalytic carrier with the oxidation catalyzer
It is weldingly connected.
9. a kind of oxidation catalyzer, which is characterized in that include the flow apron (100) as described in any one of claim 1-8,
The flow apron (100) is installed on the catalytic carrier front end of the oxidation catalyzer, and the center court of the plate body (10) leans on
The direction protrusion of the nearly catalytic carrier.
10. a kind of vehicle, which is characterized in that including oxidation catalyzer as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741944.XU CN207776948U (en) | 2017-12-13 | 2017-12-13 | Flow apron, oxidation catalyzer and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721741944.XU CN207776948U (en) | 2017-12-13 | 2017-12-13 | Flow apron, oxidation catalyzer and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207776948U true CN207776948U (en) | 2018-08-28 |
Family
ID=63231328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721741944.XU Active CN207776948U (en) | 2017-12-13 | 2017-12-13 | Flow apron, oxidation catalyzer and vehicle |
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|---|---|
| CN (1) | CN207776948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915241A (en) * | 2017-12-13 | 2019-06-21 | 北汽福田汽车股份有限公司 | Flow apron, oxidation catalyzer and vehicle |
-
2017
- 2017-12-13 CN CN201721741944.XU patent/CN207776948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915241A (en) * | 2017-12-13 | 2019-06-21 | 北汽福田汽车股份有限公司 | Flow apron, oxidation catalyzer and vehicle |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181210 Address after: 102206, Beijing, Shahe Town, Changping District Road, sand Yang Patentee after: Beiqi Futian Automobile Co., Ltd. Address before: 100102 No.1 Courtyard Building, Futong East Street, Chaoyang District, Beijing Patentee before: Auto (China) Co., Ltd. |