CN205370687U - SCR silencer assembly - Google Patents
SCR silencer assembly Download PDFInfo
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- CN205370687U CN205370687U CN201620087317.8U CN201620087317U CN205370687U CN 205370687 U CN205370687 U CN 205370687U CN 201620087317 U CN201620087317 U CN 201620087317U CN 205370687 U CN205370687 U CN 205370687U
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- cylinder
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- barrel
- 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
- 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 SCR silencer assembly comprises half encapsulation of intake pipe, barrel I, SCR carrier, barrel II, blast pipe. The one end of intake pipe is located barrel I just installs the urea nozzle holder in the outside, and the other end is located inside the barrel I, the one end that barrel I is relative with being connected the intake pipe partly encapsulates welded connection with the SCR carrier, and the SCR carrier partly encapsulates II welded connection of the other end and barrel, and the blast pipe is installed to the other end of barrel II, blast pipe one end is located II inside of barrel, the other end is located II outsides of barrel to nitrogen oxygen sensor seat is installed to the part outside barrel II. Barrel I installs end cover I, baffle I, reposition of redundant personnel baffle. The reposition of redundant personnel baffle is installed inside barrel I, for spherical, the higher authority is covered with the gas pocket. Half encapsulation in the SCR carrier partly encapsulates barrel, vermiculite liner I, ceramic carrier I, vermiculite liner II, ceramic carrier II including the SCR carrier. Barrel II includes baffle II, end cover II.
Description
Technical field
This utility model relates to a kind of automobile exhaust system parts, particularly to a kind of automobile-use SCR muffler ASSY.
Background technology
Along with the quick growth of vehicle guaranteeding organic quantity, the air pollution of China big and medium-sized cities is gradually converted into coal smoke and vehicular emission is the compound pollution led, and NOx and PM2.5 becomes the atmosphere polluting problem that a lot of city highlights the most.Vehicular emission is one of main source of NOx and PM2.5 in urban atmosphere.And in the NOx and particulate matter of vehicular emission, the contribution of heavy-duty diesel vehicle becomes increasingly conspicuous, more than more than 60% and 80% is had to come from heavy-duty diesel vehicle respectively.Although the recoverable amount of heavy-duty diesel vehicle is not high, but the discharge of its bicycle is significantly high, and the discharge reducing heavy-duty diesel vehicle has become the most important thing that motor vehicles reduces discharging.In order to control heavy-duty diesel vehicle disposal of pollutants, China comes into effect state IV Abgasgesetz on January 1st, 2015.For reaching state IV legislation discharge requirement, it is necessary to design the SCR acoustic filter of variety classes, different overall dimensions, to meet the needs of variety classes electromotor, different automobile types.Existing design is primarily present following several respects problem:
One be air inlet pipe, exhaustor installation firm not, air inlet pipe only and casing have annexation, form a kind of cantilever beam structure, mechanical strength is very poor；
Two is uniform not from the tail gas in air inlet pipe entrance SCR catalytic muffler casing and carbamide mixing, causes that the conversion efficiency of nitrogen oxides is low, it is easy to produce urea crystals；
Three is that silencing function relies primarily on SCR catalyst and realizes, and other structures do not have auxiliary silencing function.
Summary of the invention
This utility model seeks to provide a kind of SCR muffler ASSY for the deficiencies in the prior art, and it is rational in infrastructure, and mechanical strength is reliable, tail gas and carbamide mix homogeneously in cylinder, and effectively reduces noise.
SCR muffler ASSY of the present utility model is made up of air inlet pipe, cylinder I, SCR carrier half encapsulation, cylinder II, exhaustor.One end of described air inlet pipe is positioned at outside described cylinder I and is provided with urea nozzle seat, and the other end is positioned at inside cylinder I；One end relative with connecting air inlet pipe for described cylinder I is connected with SCR carrier half welded encapsulation, and the SCR carrier half encapsulation other end is welded to connect with cylinder II, and the other end of cylinder II is provided with exhaustor；It is internal that described exhaustor one end is positioned at described cylinder II, and it is outside that the other end is positioned at cylinder II, and is provided with nitrogen oxide sensor seat at cylinder II outer portion.
Described cylinder I is provided with end cap I, dividing plate I, split-flow baffles.Described end cap I is arranged on the end of cylinder I, in the middle part of one end of sealed cylinder I and fixing air inlet pipe；Dividing plate I is arranged on inside cylinder I, and one end of air inlet pipe is arranged on dividing plate I；Described air inlet pipe is positioned at end cap I, dividing plate I mid portion has equally distributed through hole, time mixed airflow enters, some gas can enter in the cylinder cavity that end cap I, dividing plate I separate by through hole, then air inlet pipe is entered again through through hole, be equivalent to carry out a partial circulating, it is possible to play the noise elimination effect to low frequency noise；Described split-flow baffles is arranged on inside cylinder I, for spheric, is covered with pore above.
Described SCR carrier half encapsulation includes SCR carrier and partly encapsulates cylinder, Vermiculitum liner I, ceramic monolith I, Vermiculitum liner II, ceramic monolith II.Ceramic monolith I and ceramic monolith II are cylinder-like structure, and outer wrap has Vermiculitum liner I and Vermiculitum liner II, and ceramic monolith I connects with ceramic monolith II and is fitted in SCR carrier half encapsulation cylinder.
Described cylinder II includes dividing plate II, end cap II.Described end cap II is used in the middle part of sealed cylinder II one end and fixing exhaustor；Described dividing plate II is arranged on the inside of cylinder II, and one end of exhaustor is arranged on dividing plate II, and dividing plate II is evenly distributed with venthole.
Described exhaustor is positioned at dividing plate II, end cap II mid portion has equally distributed through hole.
As optimization, end cap I, dividing plate I, end cap II, dividing plate II all there is flange for the air inlet or air vent being installed into trachea or exhaustor.
As optimization, this utility model is employing 06Cr19Ni10 (SUS304) corrosion resistant plate except SCR carrier half encapsulation cylinder and makes, and can well solve the carbamide etching problem to silencer cylinder, and acoustic filter is without carrying out surface treatment.
The beneficial effects of the utility model are:
One is, air inlet pipe, exhaustor are by the support of dividing plate I, dividing plate II, and mechanical strength is greatly improved；
Two are, split-flow baffles adopts spheric design, makes air-flow and urea liquid be more fully mixed, air flow method more uniform, improve the flow distribution evenness of SCR carrier surface, improve conversion ratio, reduce the generation of urea crystals；
Three are, the design of through hole on air inlet pipe, exhaustor, bring air-flow circulation in the cylinder of local, and low frequency noise serves good elimination effect；
Four are, end cap I, dividing plate I, end cap II, dividing plate II all there is flange for being installed into the air inlet of trachea or exhaustor or air vent, the position dimension of air inlet pipe, exhaustor can not only be ensured, and flange makes end cap local strengthening, can avoid welding the deformation caused, and effectively prevent the weld cracking phenomenon because vibrations cause；
Five are, adopt cylinder I, SCR carrier half encapsulation, the little assembly structure of cylinder II to connect and install, it is simple to processing.
Accompanying drawing explanation
Fig. 1: SCR acoustic wave filter structure schematic diagram；
Fig. 2: split-flow baffles left view；
Fig. 3: split-flow baffles front view；
Fig. 4: SCR carrier half encapsulating structure schematic diagram；
Fig. 5: dividing plate II front view.
Wherein: 1, air inlet pipe；2, cylinder I；3, SCR carrier half encapsulation；4, cylinder II；5, exhaustor；6, end cap I；7, dividing plate I；8, split-flow baffles；9, dividing plate II；10, end cap II；31, SCR carrier partly encapsulates cylinder；32, ceramic monolith I；33, Vermiculitum liner I；34, ceramic monolith II；35, Vermiculitum liner II.
Detailed description of the invention
For clearer explanation this utility model, it is described in detail below in conjunction with accompanying drawing.
As it is shown in figure 1, SCR muffler ASSY of the present utility model is made up of air inlet pipe 1, cylinder I2, SCR carrier half encapsulation 3, cylinder II 4, exhaustor 5.One end of described air inlet pipe 1 is positioned at outside described cylinder I2 and is provided with urea nozzle seat, and the other end is positioned at inside cylinder I2；One end relative with connecting air inlet pipe 1 for described cylinder I2 is welded to connect with SCR carrier half encapsulation 3, and SCR carrier half encapsulation 3 other ends are welded to connect with cylinder II 4, and the other end of cylinder II 4 is provided with exhaustor 5；It is internal that described exhaustor 5 one end is positioned at described cylinder II 4, and it is outside that the other end is positioned at cylinder II 4, and air inlet pipe 5 is provided with nitrogen oxide sensor seat at cylinder II 4 outer portion.
Adopting cylinder I2, SCR carrier half encapsulation 3, the little assembly structure of cylinder II 4 to connect to install, technique is simple, it is simple to processing.
Described cylinder I2 includes end cap I6, dividing plate I7, split-flow baffles 8.Described end cap I6 is arranged on the end of cylinder I2, in the middle part of one end of sealed cylinder I2 and fixing air inlet pipe 1；Dividing plate I7 is arranged on inside cylinder I2, and one end of air inlet pipe 1 is arranged on dividing plate I7；Described air inlet pipe 1 is positioned at end cap I6, dividing plate I7 mid portion has equally distributed through hole, time mixed airflow enters, some gas can enter in the cylinder cavity that end cap I6, dividing plate I7 separate by through hole, then air inlet pipe 1 is entered again through through hole, be equivalent to mixed airflow and carried out a partial circulating, it is possible to play the noise elimination effect to low frequency noise.
Described cylinder II 4 includes dividing plate II 9, end cap II 10.Described exhaustor 5 is positioned at dividing plate II 9, end cap II 10 mid portion has equally distributed through hole.Described end cap II 10 is used in the middle part of one end and the fixing exhaustor 5 of sealed cylinder II 4；Described dividing plate II 9 is arranged on the inside of cylinder II 4, and one end of exhaustor 5 is arranged on dividing plate II 9；As it is shown in figure 5, dividing plate II 9 is evenly distributed with venthole；Adopting this kind of design, the venthole that portion gas can pass through on dividing plate II 9 enters the cylinder lumen between dividing plate II 9, end cap II 10, enters exhaustor 5 again through the through hole on exhaustor 5 and is then exhausted from, it is possible to the low frequency noise of air-flow is eliminated the noise.
The support by dividing plate I6, dividing plate II 9 of described air inlet pipe 1, exhaustor 5, mechanical strength is greatly improved.
As shown in Figure 2 and Figure 3, split-flow baffles 8 is arranged on inside cylinder I2, for spheric, is covered with pore above.This kind of design makes air-flow and urea liquid be more fully mixed, air flow method more uniform, improves the flow distribution evenness of SCR carrier surface, improves conversion ratio, reduces the generation of urea crystals.
As shown in Figure 4, SCR carrier half encapsulation 3 includes SCR carrier half encapsulation cylinder 31, Vermiculitum liner I33, ceramic monolith I32, Vermiculitum liner II 35, ceramic monolith II 34.Ceramic monolith I32 and ceramic monolith II 34 are cylinder-like structure, and outer wrap has Vermiculitum liner I33 and Vermiculitum liner II 35, and ceramic monolith I32 connects with ceramic monolith II 34 and is fitted in SCR carrier half encapsulation 3 cylinders.
As optimization, on end cap I6, dividing plate I7, end cap II 10, dividing plate II 9, air inlet or air vent for being installed into trachea 1 or exhaustor 5 all have flange, this kind of design can not only ensure the position dimension of air inlet pipe 1, exhaustor 5, and flange makes end cap, dividing plate local strengthening, can avoid welding the deformation caused, and effectively prevent the weld cracking phenomenon because vibrations cause.
As optimization, this utility model is employing 06Cr19Ni10 (SUS304) corrosion resistant plate except SCR carrier half encapsulation cylinder 31 and makes, it is possible to well solve the carbamide etching problem to silencer cylinder, and acoustic filter is without carrying out surface treatment.
This utility model can pass through existing techniques in realizing without the technical characteristic described; do not repeat them here; in the above-described embodiments; preferred forms of the present utility model is described; this utility model is not limited in above-mentioned detailed description of the invention; change, remodeling, interpolation or the replacement that those of ordinary skill in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (5)
1. a SCR muffler ASSY, including air inlet pipe (1), cylinder I (2), SCR carrier half encapsulation (3), cylinder II (4), exhaustor (5), one end of described air inlet pipe (1) is positioned at described cylinder I (2) outside and is provided with urea nozzle seat, and it is internal that the other end is positioned at cylinder I (2)；One end and SCR carrier half encapsulation (3) that described cylinder I (2) is relative with connecting air inlet pipe (1) are welded to connect, SCR carrier half encapsulation (3) other end is welded to connect with cylinder II (4), and the other end of cylinder II (4) is provided with exhaustor (5)；It is internal that described exhaustor (5) one end is positioned at described cylinder II (4), it is outside that the other end is positioned at cylinder II (4), air inlet pipe (5) is provided with nitrogen oxide sensor seat at cylinder II (4) outer portion, it is characterised in that: described cylinder I (2) includes end cap I (6), dividing plate I (7), split-flow baffles (8)；Described end cap I (6) is arranged on the end of cylinder I (2), for one end and fixing air inlet pipe (1) middle part of sealed cylinder I (2)；It is internal that dividing plate I (7) is arranged on cylinder I (2), and one end of air inlet pipe (1) is arranged on dividing plate I (7)；Described air inlet pipe (1) is positioned at end cap I (6), dividing plate I (7) mid portion has equally distributed through hole；It is internal that described split-flow baffles (8) is arranged on cylinder I (2), for spheric, is covered with pore above.
2. SCR muffler ASSY as claimed in claim 1, it is characterized in that: described cylinder II (4) includes dividing plate II (9), end cap II (10), described end cap II (10) is for one end of sealed cylinder II (4) and fixing exhaustor (5) middle part；Described dividing plate II (9) is arranged on the inside of cylinder II (4), and one end of exhaustor (5) is arranged on dividing plate II (9)；Described exhaustor (5) is positioned at dividing plate II (9), end cap II (10) mid portion has equally distributed through hole, and described dividing plate II (9) is evenly distributed with venthole.
3. SCR muffler ASSY as claimed in claim 1, it is characterized in that: SCR carrier half encapsulation (3) includes SCR carrier and partly encapsulates cylinder (31), Vermiculitum liner I (33), ceramic monolith I (32), Vermiculitum liner II (35), ceramic monolith II (34), ceramic monolith I (32) and ceramic monolith II (34) are cylinder-like structure, outer wrap has Vermiculitum liner I (33) and Vermiculitum liner II (35), and ceramic monolith I (32) and ceramic monolith II (34) are fitted in SCR carrier side by side and partly encapsulate in cylinder (31).
4. the SCR muffler ASSY as described in claim 1 or 3, it is characterised in that: being used on described end cap I (6), dividing plate I (7) is installed into the air inlet of trachea (1) and has flange.
5. SCR muffler ASSY as claimed in claim 2, it is characterised in that: being used on described end cap II (10), dividing plate II (9) is installed the air vent of exhaustor (5) and has flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087317.8U CN205370687U (en) | 2016-01-28 | 2016-01-28 | SCR silencer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087317.8U CN205370687U (en) | 2016-01-28 | 2016-01-28 | SCR silencer assembly |
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| Publication Number | Publication Date |
|---|---|
| CN205370687U true CN205370687U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620087317.8U Active CN205370687U (en) | 2016-01-28 | 2016-01-28 | SCR silencer assembly |
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| CN (1) | CN205370687U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523091A (en) * | 2016-10-24 | 2017-03-22 | 无锡威孚力达催化净化器有限责任公司 | Page window type cyclone urea mixing device |
| CN108894859A (en) * | 2018-07-25 | 2018-11-27 | 汽解放汽车有限公司 | A kind of cylinder type integrates the post-processor assembly of detachable urea nozzle |
| CN113909817A (en) * | 2021-10-19 | 2022-01-11 | 南京海特汽车部件有限公司 | Processing technology of low-smoke silencer component |
-
2016
- 2016-01-28 CN CN201620087317.8U patent/CN205370687U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523091A (en) * | 2016-10-24 | 2017-03-22 | 无锡威孚力达催化净化器有限责任公司 | Page window type cyclone urea mixing device |
| CN106523091B (en) * | 2016-10-24 | 2019-04-23 | 无锡威孚力达催化净化器有限责任公司 | Page window type eddy flow urea mixing device |
| CN108894859A (en) * | 2018-07-25 | 2018-11-27 | 汽解放汽车有限公司 | A kind of cylinder type integrates the post-processor assembly of detachable urea nozzle |
| CN108894859B (en) * | 2018-07-25 | 2023-10-24 | 一汽解放汽车有限公司 | Post-processor assembly of cylindrical integrated detachable urea nozzle |
| CN113909817A (en) * | 2021-10-19 | 2022-01-11 | 南京海特汽车部件有限公司 | Processing technology of low-smoke silencer component |
| CN113909817B (en) * | 2021-10-19 | 2024-03-19 | 南京海特汽车部件有限公司 | Processing technology of low-smoke muffler assembly |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |