CN211258767U - SCR mechanical pipeline assembly of automobile exhaust system - Google Patents
SCR mechanical pipeline assembly of automobile exhaust system Download PDFInfo
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- CN211258767U CN211258767U CN201922127275.2U CN201922127275U CN211258767U CN 211258767 U CN211258767 U CN 211258767U CN 201922127275 U CN201922127275 U CN 201922127275U CN 211258767 U CN211258767 U CN 211258767U
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- dust removal
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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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Abstract
The utility model discloses an automobile exhaust system SCR mechanical duct assembly, including intake pipe, urea injection pipe, blender, SCR catalysis case, dust removal pipeline, flowmeter, water conservancy diversion fan, dust removal leaf and dust removal board, wherein: the air inlet pipe and the urea injection pipe are both communicated with the mixer, the air outlet end of the mixer is communicated with the SCR catalytic box, one end of the dust removal pipeline is communicated with the SCR catalytic box, and the other end of the dust removal pipeline is communicated with the flowmeter; the guide fan is rotatably installed in the dust removal pipeline, the rotating axis of the guide fan is parallel to the axis of the dust removal pipeline, the guide fan divides the dust removal pipeline into an air inlet part and an air outlet part, the guide fan is used for guiding air entering the dust removal pipeline to the direction of the inner wall of the dust removal pipeline, the dust removal blades are installed on the inner wall of the air outlet part, and the dust removal plate is fixed on the dust removal blades. The utility model provides a car tail gas exhaust system SCR mechanical pipeline assembly is convenient for to SCR catalysis case exhaust gas's edulcoration, the increase is to the precision of SCR exhaust gas flow measurement.
Description
Technical Field
The utility model relates to a vapour exhaust emission equipment technical field especially relates to a car exhaust gas exhaust system SCR mechanical pipeline assembly.
Background
SCR (Selective catalytic reduction) is a treatment process aiming at NOx in tail gas emission of diesel vehicles, namely, under the action of a catalyst, a reducing agent ammonia or urea is sprayed to reduce the NOx in the tail gas into N2And H2And O. The tail gas from the turbine enters an exhaust mixing pipe, a urea metering injection device is arranged on the mixing pipe, urea aqueous solution is injected, and NH is generated after hydrolysis and pyrolysis reaction of urea at high temperature3Using NH on the surface of the SCR system catalyst3Reduction of NOXDischarged N2, excess NH3 is also oxidized to N2. The prior art is that gas and urea react in an SCR reaction box after being mixed by a mixer, the gas discharged from the SCR reaction box contains certain particles and impurities, and if the flow rate of the gas discharged from the SCR reaction box is measured, the detection effect is influenced and the service life of a flowmeter is influenced.
SUMMERY OF THE UTILITY MODEL
For the technical problem who exists among the solution background art, the utility model provides an automobile exhaust system SCR mechanical pipeline assembly.
The utility model provides a pair of automobile exhaust system SCR mechanical pipe assembly, including intake pipe, urea injection pipe, blender, SCR catalysis case, dust removal pipeline, flowmeter, water conservancy diversion fan, dust removal leaf and dust removal board, wherein:
the air inlet pipe and the urea injection pipe are both communicated with the mixer, the air outlet end of the mixer is communicated with the SCR catalytic box, one end of the dust removal pipeline is communicated with the SCR catalytic box, and the other end of the dust removal pipeline is communicated with the flowmeter;
the guide fan is rotatably arranged in the dust removal pipeline, the rotating axis of the guide fan is parallel to the axis of the dust removal pipeline, the guide fan divides the dust removal pipeline into an air inlet part and an air outlet part, the guide fan is used for guiding air entering the dust removal pipeline to the direction of the inner wall of the dust removal pipeline, the dust removal blades are arranged on the inner wall of the air outlet part, and the dust removal plate is fixed on the dust removal blades;
entering into the dust removal pipeline earlier before the main casing body of gaseous entering flowmeter, gaseous blowing water conservancy diversion fan makes the water conservancy diversion fan rotate, and the water conservancy diversion fan carries out the water conservancy diversion to gaseous and makes gaseous to the inner wall direction of dust removal pipeline flow, and gaseous collides with the dust removal board on the dust removal leaf, and the dust in the dust removal board adsorbs gas, and then makes the gas that enters into flowmeter inside purer.
As the utility model discloses the scheme of further optimization, the water conservancy diversion fan is including keeping off dish and a plurality of flabellum, keeps off the dish and rotates to install on dust removal pipeline, and the equal coaxial arrangement of a plurality of flabellums is on keeping off the dish, and gas blows the flabellum and drives and keep off the dish rotation, and keeps off the dish and prevent that gaseous straight line from blowing in the part of giving vent to anger, can know according to the fluid dynamics principle, gaseous and keep off dish and flabellum collision back gas flow all around and then the water conservancy diversion fan with gas direction dust removal pipe inner wall from keeping.
In order to further realize the dust removal effect to gas, conduct the utility model discloses the scheme of further optimization keeps off the dish and goes up the one side relative with the part of admitting air and be equipped with the rotation dust removal board.
As a further optimized proposal of the utility model, the dust-removing plate and the rotating dust-removing plate are all provided with a plurality of barbed hairs with hook shapes.
For the convenience of realize keeping off the installation of dish, conduct the utility model discloses the scheme of further optimizing still includes L type support frame, and L type support frame is fixed at the dust removal pipeline inner wall, keeps off the dish and passes through the bearing and rotate and install on L type support frame.
As the utility model discloses the scheme of further optimization, the skew dust removal pipeline axis of water conservancy diversion fan pivoted axis.
As the utility model discloses the scheme of further optimization, the leaf that removes dust includes first dust removal leaf and second dust removal leaf, and first dust removal leaf and second dust removal leaf are all installed at the dust removal pipeline inner wall, and first dust removal leaf advance with the second dust removal between the leaf form the water conservancy diversion passageway.
As the utility model discloses the scheme of further optimization, the internal diameter of water conservancy diversion passageway diminishes to keeping away from water conservancy diversion fan direction from being close to the water conservancy diversion fan gradually.
As a further preferred embodiment of the present invention, the surface of the first dust removing blade relative to the second dust removing blade is an outwardly concave arc surface.
As the utility model discloses the scheme of further optimization, the second removes dust the leaf and has the multiunit, and the axis direction that the multiunit second removed dust the leaf along dust removal pipeline is installed at the dust removal pipeline inner wall.
The utility model discloses in, the automobile exhaust system SCR mechanical pipeline assembly that provides, enter into dust removal pipeline earlier before getting into the flowmeter from SCR catalysis case combustion gas, gas blows the water conservancy diversion fan and makes the water conservancy diversion fan rotate, the water conservancy diversion fan carries out the water conservancy diversion to gas and makes gas flow to dust removal pipeline inner wall direction, gas collides with the dust removal board on the dust removal leaf, dust in the dust removal board adsorbed gas, realize the technological effect of better dust removal, and then make the inside gas that enters into the flowmeter purer, increase measurement accuracy and measurement of efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the dust removal pipe of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1-2, an SCR mechanical pipeline assembly of an automobile exhaust system comprises an air inlet pipe 8, a urea injection pipe 9, a mixer 10, an SCR catalytic box 11, a dust removal pipeline 2, a flow meter 1, a flow guide fan 3, a dust removal blade 4 and a dust removal plate 5, wherein:
the air inlet pipe 8 and the urea injection pipe 9 are both communicated with a mixer 10, the air outlet end of the mixer 10 is communicated with an SCR catalytic box 11, one end of the dust removal pipeline 2 is communicated with the SCR catalytic box 11, and the other end of the dust removal pipeline 2 is communicated with the flowmeter 1;
the diversion fan 3 is rotatably installed in the dust removal pipeline 2, the rotating axis of the diversion fan 3 deviates from the axis of the dust removal pipeline 2, the rotating axis of the diversion fan 3 is parallel to the axis of the dust removal pipeline 2, the diversion fan 3 divides the dust removal pipeline 2 into an air inlet part 20 and an air outlet part 21, the diversion fan 3 is used for guiding air entering the dust removal pipeline 2 to the direction of the inner wall of the dust removal pipeline 2, the dust removal blades 4 are installed on the inner wall of the air outlet part 21, and the dust removal plate 5 is fixed on the dust removal blades 4.
The water conservancy diversion fan 3 includes fender dish 30 and a plurality of flabellum 31, and fender dish 30 rotates and installs on dust removal pipeline 2, still includes L type support frame 6, and L type support frame 6 is fixed at 2 inner walls of dust removal pipeline, and fender dish 30 passes through the bearing and rotates and install on L type support frame 6, and the equal coaxial arrangement of a plurality of flabellums 31 is on fender dish 30, and the one side relative with air inlet part 20 on the fender dish 30 is equipped with rotation dust removal board 50.
The dust removing blades 4 comprise first dust removing blades 40 and second dust removing blades 41, the first dust removing blades 40 and the second dust removing blades 41 are both installed on the inner wall of the dust removing pipeline 2, a flow guide channel 7 is formed between the first dust removing blades 40 and the second dust removing blades 41, and the inner diameter of the flow guide channel 7 is gradually reduced from being close to the flow guide fan 3 to being far away from the flow guide fan 3.
The opposite surfaces of the first dust removing blade 40 and the second dust removing blade 41 are both cambered surfaces which are concave outwards,
the second dust removing blades 41 have multiple groups, and the multiple groups of second dust removing blades 41 are arranged on the inner wall of the dust removing pipeline 2 along the axial direction of the dust removing pipeline 2;
In the working process of the embodiment, gas discharged from the SCR catalytic tank enters the dust removal pipeline 2 from the gas inlet part 20, the gas and the gas blow the fan blades 31 to drive the baffle disc 30 to rotate, and the baffle disc 30 prevents the gas from being blown into the gas outlet part 21 linearly, as can be known from the fluid dynamics principle, after the gas collides with the baffle disc 30 and the fan blades 31, the gas flows from the periphery of the baffle disc 30 due to the flowing performance of the gas and the centrifugal action of the baffle disc 30, so that the gas is guided to the inner wall of the dust removal pipe 2 by the guide fan 3, the gas collides with the dust removal plates 5 on the first dust removal blades 40 and the second dust removal blades 41 for multiple times at different speeds and sizes, and hook-shaped bristles on the dust removal plates 5 realize the removal of dust in the gas, and the dust.
In this embodiment, preferably, the guiding fan 3 includes a baffle disc 30 and a plurality of fan blades 31, the baffle disc 30 is rotatably installed on the dust removing pipe 2, the plurality of fan blades 31 are all coaxially installed on the baffle disc 30, the air blows the fan blades 31 to drive the baffle disc 30 to rotate, and the baffle disc 30 prevents the air from being blown into the air outlet portion 21 linearly, and according to the fluid dynamics principle, after the air collides with the baffle disc 30 and the fan blades 31, the air flows around the baffle disc 30 due to the flowing property of the air and the centrifugal action of the baffle disc 30, and then the guiding fan 3 guides the air to the inner wall of the dust removing pipe 2.
In the present embodiment, it is preferable that a rotary dust-removing plate 50 is provided on a surface of the baffle plate 30 opposite to the gas inlet portion 20, and when the gas is blown onto the baffle plate 30, the dust-removing plate 5 removes dust from the gas, thereby increasing the dust-removing efficiency.
In this embodiment, it is preferable, still include L type support frame 6, and L type support frame 6 is fixed at dust removal pipeline 2 inner wall, and fender dish 30 passes through the bearing and rotates and install on L type support frame 6, and then is convenient for realize the installation of fender dish 30.
In this embodiment, it is preferable that the axis of the diversion fan 3 deviates from the axis of the dust removal pipeline 2, so that the speed of the gas guided out from the periphery of the diversion fan 3 is different when the gas collides with the dust removal plate 5 on the dust removal pipeline 2, and further, when the gas collides with the dust removal plate 5 at different positions again, the speed and the speed direction of the gas can be changed conveniently, thereby increasing the dust removal efficiency.
In this embodiment, the dust removing blades 4 include a first dust removing blade 40 and a second dust removing blade 41, the first dust removing blade 40 and the second dust removing blade 41 are both installed on the inner wall of the dust removing pipeline 2, a flow guiding channel 7 is formed between the first dust removing blade 40 and the second dust removing blade 41, and the dust removing plates 5 are both installed on the first dust removing blade 40 and the second dust removing blade 41.
In the present embodiment, it is preferable that the opposite surfaces of the first dust removing blade 40 and the second dust removing blade 41 are both outward concave cambered surfaces to facilitate the gas flow.
In the present embodiment, it is preferable that the inner diameter of the guide passage 7 gradually decreases from the direction close to the guide fan 3 to the direction away from the guide fan 3, so that the collision of the gas with the first dust removing blades 40 and the second dust removing blades 41 is increased, and the gas dust removing efficiency is increased by increasing the flow rate of the gas.
In the present embodiment, it is preferable that the second dust removing blades 41 have a plurality of sets, and the plurality of sets of second dust removing blades 41 are installed on the inner wall of the dust removing duct 2 along the axial direction of the dust removing duct 2, so as to increase the contact area between the dust removing plate 5 and the gas and increase the dust removing efficiency.
In this embodiment, preferably, the dust-removing plate 5 and the rotating dust-removing plate 50 are both provided with a plurality of barbed bristles, and the barbed bristles can catch dust, so as to facilitate dust removal.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an automobile exhaust system SCR mechanical duct assembly, its characterized in that, includes intake pipe (8), urea injection pipe (9), blender (10), SCR catalysis case (11), dust removal pipeline (2), flowmeter (1), water conservancy diversion fan (3), dust removal leaf (4) and dust removal board (5), wherein:
the air inlet pipe (8) and the urea injection pipe (9) are communicated with a mixer (10), the air outlet end of the mixer (10) is communicated with an SCR catalytic box (11), one end of the dust removal pipeline (2) is communicated with the SCR catalytic box (11), and the other end of the dust removal pipeline (2) is communicated with the flowmeter (1);
the guide fan (3) is rotatably installed in the dust removal pipeline (2), the rotating axis of the guide fan (3) is parallel to the axis of the dust removal pipeline (2), the dust removal pipeline (2) is divided into an air inlet part (20) and an air outlet part (21) by the guide fan (3), the guide fan (3) is used for guiding air entering the dust removal pipeline (2) to the inner wall direction of the dust removal pipeline (2), the dust removal blades (4) are installed on the inner wall of the air outlet part (21), and the dust removal plate (5) is fixed on the dust removal blades (4).
2. The mechanical pipeline assembly of the automobile exhaust system SCR according to claim 1, wherein the guiding fan (3) comprises a baffle disc (30) and a plurality of fan blades (31), the baffle disc (30) is rotatably installed on the dust removal pipeline (2), and the plurality of fan blades (31) are coaxially installed on the baffle disc (30).
3. The mechanical SCR pipeline assembly of claim 2, wherein the face of the baffle disc (30) opposite to the air inlet portion (20) is provided with a rotary dust-removing plate (50).
4. The mechanical pipeline assembly of the SCR of the automobile exhaust system according to claim 3, wherein the dust-removing plate (5) and the rotary dust-removing plate (50) are provided with a plurality of hooked burrs.
5. The mechanical pipeline assembly of the automobile exhaust system SCR according to claim 2, further comprising an L-shaped support frame (6), wherein the L-shaped support frame (6) is fixed on the inner wall of the dust removal pipeline (2), and the baffle disc (30) is rotatably mounted on the L-shaped support frame (6).
6. Mechanical pipeline assembly of an automotive exhaust system SCR according to claim 1, characterized in that the axis of rotation of the deflector fan (3) is offset from the axis of the dust removal duct (2).
7. The mechanical pipeline assembly of the SCR of the automobile exhaust system according to claim 1, wherein the dust removing blade (4) comprises a first dust removing blade (40) and a second dust removing blade (41), the first dust removing blade (40) and the second dust removing blade (41) are both installed on the inner wall of the dust removing pipeline (2), and a flow guide channel (7) is formed between the first dust removing blade (40) and the second dust removing blade (41).
8. The mechanical pipeline assembly of the automobile exhaust system SCR according to claim 7, wherein the opposite surfaces of the first dust removing blade (40) and the second dust removing blade (41) are both outwardly concave cambered surfaces.
9. The mechanical pipeline assembly of the automobile exhaust system SCR according to claim 7, wherein the inner diameter of the diversion channel (7) is gradually reduced from the direction close to the diversion fan (3) to the direction far away from the diversion fan (3).
10. The mechanical pipeline assembly of the automobile exhaust system SCR according to claim 7, wherein the second dust removing blades (41) have a plurality of sets, and the plurality of sets of second dust removing blades (41) are installed on the inner wall of the dust removing pipe (2) along the axial direction of the dust removing pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127275.2U CN211258767U (en) | 2019-11-29 | 2019-11-29 | SCR mechanical pipeline assembly of automobile exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127275.2U CN211258767U (en) | 2019-11-29 | 2019-11-29 | SCR mechanical pipeline assembly of automobile exhaust system |
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| CN211258767U true CN211258767U (en) | 2020-08-14 |
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| CN201922127275.2U Active CN211258767U (en) | 2019-11-29 | 2019-11-29 | SCR mechanical pipeline assembly of automobile exhaust system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894804A (en) * | 2019-11-29 | 2020-03-20 | 安徽中鼎流体***有限公司 | SCR mechanical pipeline assembly of automobile exhaust system |
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2019
- 2019-11-29 CN CN201922127275.2U patent/CN211258767U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110894804A (en) * | 2019-11-29 | 2020-03-20 | 安徽中鼎流体***有限公司 | SCR mechanical pipeline assembly of automobile exhaust system |
| CN110894804B (en) * | 2019-11-29 | 2024-06-14 | 安徽中鼎流体***有限公司 | SCR mechanical pipeline assembly of automobile exhaust gas exhaust system |
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