CN202266317U - Mixed unit of foam metal bulb tube combination - Google Patents
Mixed unit of foam metal bulb tube combination Download PDFInfo
- Publication number
- CN202266317U CN202266317U CN2011203437695U CN201120343769U CN202266317U CN 202266317 U CN202266317 U CN 202266317U CN 2011203437695 U CN2011203437695 U CN 2011203437695U CN 201120343769 U CN201120343769 U CN 201120343769U CN 202266317 U CN202266317 U CN 202266317U
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- foam metal
- spheroid
- fastening
- mixed cell
- foam
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Abstract
The utility model relates to a mixed unit of foam metal bulb tube combination, which is characterized in that a metal fiber braided tube is fixed through a fastening outer sleeve and a fastening inner sleeve, and the fastening outer sleeve, the fastening inner sleeve and the metal fiber braided tube are welded into a whole through a connecting flange. The inner diameter of the fastening inner sleeve is D1, the diameter of a foam metal sphere is D2, and the ratio of the sphere diameter D2 and the tube diameter D1 is that D2/D1=1.5-2.5. The proportional relation between the length L2 of the fastening outer sleeve and the length L1 of the fastening inner sleeve is that L2-L1=3-5mm, and L2=300mm. The mixed unit of the foam metal bulb tube combination is formed on the downstream of a nozzle of a concentric circle cylindrical urea reducing agent. Catalyst is coated on the foam metal sphere and applied to mixture and decomposition of the urea reducing agent. The mixed unit of the foam metal bulb tube combination is simple in structure, efficient, durable and applied to a post-treatment device in national over 4 emission standard.
Description
Technical field
The utility model relates to a kind of mixed cell of foam metal bulb combination, and this technology can be applied to the reprocessing industry of vehicle exhaust.
Background technique
The car manufactures in the whole world is under the pressure of Abgasgesetz; External automobile-used heavy-duty diesel engine just constantly carries out technology upgrading and improvement on the one hand; On the other hand; Select appropriate post-processing technology strategy and equipment, for example, SCR (Selective Catalytic Reduction) catalyzed conversion reduction technique etc.
The essence of SCR technology is to utilize urea at high temperature to decomposite NH
3, as the NH of reducing agent
3With the NO in the engine exhaust
xUnder the comprehensive function of catalyzer and temperature, react, generate nontoxic N under the desirable operating mode
2And H
2O, thus reach the purpose of purification.
SCR has lot of advantages, for example, can in the scope of delivery temperature 250～550oC, have 50 ~ 85% NOX removal efficient, and can effectively reduce the emission level of PM; SCR can easily satisfy Europe 4 and Europe 5 levels, also has the potentiality that reach Europe 6 levels; Reach the SCR technology that adopts in Europe 4 at present, the fuel oil consumption of motor can reduce by 3 ~ 6%; The SCR catalyzer does not contain precious metal, and is more relatively low than cost; SCR is to the quality of fuel oil for vehicles, and particularly Sulpher content is insensitive.Based on above analysis, the SCR post-processing technology is the vehicle condition and the fuel oil for vehicles situation of suitable China also.
If applied the vehicle-mounted SCR post-processing technology in China in 2008, must resolve the vital technological difficulties such as atomized spray, SCR catalyzer conversion efficiency, ammonia amount of leakage of dosage, the carbamide reducing agent of carbamide reducing agent supply, carbamide reducing agent.
Relate to the injection of carbamide reducing agent and the problem of atomizing effect in the above-mentioned difficult point.After carbamide reducing agent comes out from nozzle ejection, advance with the air-flow of engine exhaust, the mixed effect of nature is poor; The urea granules water evaporation is slow, and hydrolysis and pyrolysis rate are slow, still can not effectively decomposite NH3 when arriving the SCR front end; Cause the NOX removal effect to descend; NH3 escape amount strengthens, and therefore, the mixing of the carbamide reducing agent of spray nozzle front end or rear end is one of them key.
Application number discloses a kind of static mixer that is used for the diesel urea selective catalytic reduction device for the patented invention of ' CN201010587875.8 '; Comprise body, mixer fin and nozzle; It is characterized in that described mixer fin is near nozzle and be installed in spray nozzle front end; The mixer fin is whole bowl formula structure, and the middle part is protruding in the other direction along air-flow; Application number for the disclosure of the Invention of ' CN201010587881.3 ' a kind of mixing arrangement that is used for diesel urea SCR system; Comprise body, mixer tab arrangement and nozzle; It is characterized in that described mixer tab arrangement is near nozzle and be installed in spray nozzle front end; Described mixer tab arrangement is made up of one group of fin; The sector structure of described fin main body for reversing along airflow direction, its arranged direction is consistent with the spray axis direction, is provided with one group of inclination guide plate in described each fin; Application number be ' CN201010588290.8 ' disclosure of the Invention the mixing arrangement of a kind of automobile-used urea SCR system; Comprise body, mixer tab arrangement and nozzle; Described nozzle is tilting on the body wall, and described mixer tab arrangement is near nozzle and be installed in spray nozzle front end; Application number relates to the outlet pipe that a kind of enhancing mobility of tail gas rotational flows and eliminates urea solution jet crystallization for the model utility of ' CN201020536943.3 '; Comprise the outlet pipe that urea liquid atomizer nozzle and SCR catalyst converter are housed in the pipe successively, it is characterized in that: the urea liquid atomizer nozzle front end in the said outlet pipe is provided with cyclone separator; Application number discloses a kind of automobile exhaust pipeline static mixer for ' CN201020198744.6 ' model utility; Comprise body, fin and nozzle; It is characterized in that described nozzle is arranged on the body; Described fin is a monolithic construction, and the center has circular channel, is curved arc shape refluence plate and be furnished with the fluid passage all around.
More than 6 described mixers of patent all be arranged on the front end of urea nozzle, utilize the air-flow of disturbance to come the mixing urea reducing agent, the effect that urea mixed when the disturbance effect was relatively poor is bad, if the effect of disturbance is fine, certainly will cause the exhaust back pressure problem.Do not use the content of foam metal.
Application number discloses a kind of automobile exhaust pipeline static mixer for the model utility of ' CN201020198714.5 '; Comprise body, fin and nozzle; Nozzle is arranged on the body, and described fin cross section is " V " font arranges, and the fin that a plurality of length are different alternately radially is arranged in the body; Application number relates to a kind of urea mixing device for the invention of ' CN201010226366.2 ', and it comprises that at least two group blades are right, every group of butterfly blade that said blade is oppositely arranged comprising two fold directions; Application number relates to the mixing arrangement that is used for selective catalytic reduction system operating for the invention of ' CN200910252809.2 ', and first hybrid element that comprises main body with holes has first surface, second surface and extends to a plurality of ducts of second surface from first surface; Application number is a kind of motor exhaust flow-disturbing mixer of ' CN200920227898.0 '; The outer wall and the outlet pipe (7) at said pipeline (1) two ends are slidingly matched; Downstream one end of pipeline (1) is provided with impeller assembly (4), and the stage casing of pipeline (1) is the aditus laryngis pipe (2) of internal diameter less than pipeline (1) internal diameter; Application number discloses a kind of SCR reprocessing piping device of large-duty engine for the model utility of ' CN200720018679.2 ', and this mixer is for having mesh screen net greatly, and on screen cloth, is provided with the flow-disturbing catch;
Though the mixed cell of above-mentioned 5 patents is arranged on the urea nozzle rear end, its shape and structure are different from the present invention, also do not carry out any processing and coating at finned surface, do not use the content of foam metal.Also be different from the present invention.
Thus, based on analyzing and improving, produced the present invention.
Summary of the invention
The purpose of the utility model is to provide a kind of mixed cell of foam metal bulb combination; It adopts steel fiber pipe parcel foam metal spheroid, constitutes the mixed cell of foam metal bulb combination of the carbamide reducing agent of a concentric circle tubular, and on the foam metal spheroid coating catalyst; Be applied to the mixed decomposition of carbamide reducing agent; Simple in structure, highly efficient durable is applied in state's 4 above after-treatment devices.
The technological scheme of the utility model is achieved in that the mixed cell of foam metal bulb combination, by outlet pipe, and nozzle, adpting flange, solder joint, fastening outer sleeve, fastening inner sleeve, the steel fiber woven tube, the foam metal spheroid is formed; It is characterized in that: fastening outer sleeve and fastening inner sleeve fixing metal fibre woven pipe are welded as a whole with adpting flange; The internal diameter of fastening inner sleeve is D1, and the foam metal sphere diameter is D2, ratio D2/D1=1.5 ~ 2.5 of sphere diameter D2 and caliber D1; The proportionate relationship of the length L 2 of fastening outer sleeve and the length L 1 of fastening inner sleeve is L2-L1=3 ~ 5mm; L2=300mm; It is arranged in the nozzle downstream of carbamide reducing agent.
Described foam metal spheroid is for the aperture is 2 ~ 10mm, and the order number is 5 ~ 50ppi porosity ratio for greater than 80%, and through-hole rate is greater than 90% foam metal, comprise foamed aluminium, foamed nickel, titanium foam or foam stainless any one.
Described foam metal spheroid be shaped as circular spheroid or oval-shaped ball; It is the parallel axis with this mixed cell of long axis direction; Perhaps the foam metal spheroid adopts circular spheroid or the ellipse spheroid that the Stainless Steel Wire coiling forms, or adopts the mixed cell of forming more than a spheroid series connection.
Described steel fiber woven tube is the pipe of corrosion resistant plate preparation, and its thickness is 2 ~ 3mm.
Be coated with on the described mixer foam metal spheroid and help the catalyzer that carbamide reducing agent decomposes.
The good effect of the utility model is: from machinery, physics, material, chemistry and pneumatic transfer aspect; Design the mixed cell that a kind of easy foam metal bulb makes up; With low cost, can improve and mix and the effect of homogenizing, have certain practical value.
Description of drawings
Fig. 1 is the structural drawing of the utility model.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is further described, the mixed cell of foam metal bulb combination, by outlet pipe 1, nozzle 2; Adpting flange 3, solder joint 4, fastening outer sleeve 5; Fastening inner sleeve 6, steel fiber woven tube 7, foam metal spheroid 8 is formed; It is characterized in that: fastening outer sleeve 5 and fastening inner sleeve 6 fixing metal fibre woven pipes 7 are welded as a whole with adpting flange 3; The internal diameter of fastening inner sleeve 6 is D1, and foam metal spheroid 8 diameters are D2, ratio D2/D1=1.5 ~ 2.5 of sphere diameter D2 and caliber D1; The proportionate relationship of the length L 2 of fastening outer sleeve 5 and the length L 1 of fastening inner sleeve 6 is L2-L1=3 ~ 5mm; L2=300mm; It is arranged in the nozzle downstream of carbamide reducing agent.
Described foam metal spheroid 8 is for the aperture is 2 ~ 10mm, and the order number is 5 ~ 50ppi porosity ratio for greater than 80%, and through-hole rate is greater than 90% foam metal, comprise foamed aluminium, foamed nickel, titanium foam or foam stainless any one.
Described foam metal spheroid 8 be shaped as circular spheroid or oval-shaped ball; It is the parallel axis with this mixed cell of long axis direction; Perhaps foam metal spheroid 8 adopts circular spheroid or the ellipse spheroid that the Stainless Steel Wire coilings form, or adopts the mixed cell of forming more than a spheroid series connection.
Described foam metal spheroid be shaped as circular spheroid or oval-shaped ball; It is the parallel axis with this mixed cell of long axis direction; Perhaps the foam metal spheroid adopts circular spheroid or the ellipse spheroid that the Stainless Steel Wire coiling forms, or adopts the mixed cell of forming more than a spheroid series connection.
Described steel fiber woven tube 7 is the pipe of corrosion resistant plate preparation, and its thickness is 2 ~ 3mm.
Be coated with on the described mixer foam metal spheroid 8 and help the catalyzer that carbamide reducing agent decomposes.
Choose commercially available foam metal spheroid, the order number is 5ppi, and material is a foamed nickel, is processed into the spheroid that diameter is 180mm; Adopt length 600mm, thickness is the stainless steel steel fiber woven tube of 2 ~ 3mm, bore 185mm; Put into foamed nickel in the middle of the steel fiber woven tube, adopt the fastening inner sleeve of length 100mm external diameter 90mm, adopting length 105mm internal diameter is the fastening outer sleeve of 120mm; Close up, the import and export of making up this mixed cell, warp is the flange of 90mm in adopting; Import and export the completion welding respectively, be prepared into the main body of mixed cell; Be arranged in the nozzle downstream of carbamide reducing agent.
At first put into High Temperature Furnaces to the integral body of this unit, heat up 450 ~ 550 ℃ and be incubated 40 ~ 60min, accomplish the oil removing operation with stove; Select 70 parts of the nano titanic oxide sols of the 15%wt content that industry sells for use, the Mean particle diameter of mixing industry is 25 parts of 100nm nanometer titanium dioxide titanium valves, and 5 parts of alcohol; Wet ball grinding 20min in the pebble mill becomes milkiness shape suspension liquid, pours slurry into from an end of mixed cell; Fully soak into, at first apply 1 time, drench and do excess liquid; Put into 90 ~ 120 ℃ of drying oven inner drying 40 ~ 60min behind the air purge; In the High Temperature Furnaces of immigration, with 500 ~ 600 ℃ of stove intensifications and heat preservation sintering 40 ~ 60min, the coating of uniform titanium dioxide on mixer wing plate (6) deposition and sintering; Repeat above-mentioned coat operations, accomplish second coat.
Claims (5)
1. the mixed cell of foam metal bulb combination, by outlet pipe, nozzle, adpting flange, solder joint, fastening outer sleeve, fastening inner sleeve, the steel fiber woven tube, the foam metal spheroid is formed; It is characterized in that: fastening outer sleeve and fastening inner sleeve fixing metal fibre woven pipe are welded as a whole with adpting flange; The internal diameter of fastening inner sleeve is D1, and the foam metal sphere diameter is D2, ratio D2/D1=1.5 ~ 2.5 of sphere diameter D2 and caliber D1; The proportionate relationship of the length L 2 of fastening outer sleeve and the length L 1 of fastening inner sleeve is L2-L1=3 ~ 5mm; L2=300mm; It is arranged in the nozzle downstream of carbamide reducing agent.
2. the mixed cell that makes up according to a kind of foam metal bulb described in the claim 1; It is characterized in that described foam metal spheroid be for the aperture be 2 ~ 10mm; The order number is that 5 ~ 50ppi porosity ratio is greater than 80%; Through-hole rate is greater than 90% foam metal, comprise foamed aluminium, foamed nickel, titanium foam or foam stainless any one.
3. the mixed cell that makes up according to the foam metal bulb described in the claim 1; It is characterized in that circular spheroid of being shaped as of described foam metal spheroid or oval-shaped ball; It is the parallel axis with this mixed cell of long axis direction; Perhaps the foam metal spheroid adopts circular spheroid or the ellipse spheroid that the Stainless Steel Wire coiling forms, or adopts the mixed cell of forming more than a spheroid series connection.
4. according to the mixed cell of the combination of the foam metal bulb described in the claim 1, it is characterized in that described steel fiber woven tube is the pipe of corrosion resistant plate preparation, its thickness is 2 ~ 3mm.
5. according to the mixed cell of the combination of the foam metal bulb described in the claim 1, it is characterized in that being coated with on the described mixer foam metal spheroid catalyzer that helps the carbamide reducing agent decomposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203437695U CN202266317U (en) | 2011-09-14 | 2011-09-14 | Mixed unit of foam metal bulb tube combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203437695U CN202266317U (en) | 2011-09-14 | 2011-09-14 | Mixed unit of foam metal bulb tube combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266317U true CN202266317U (en) | 2012-06-06 |
Family
ID=46157115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203437695U Expired - Fee Related CN202266317U (en) | 2011-09-14 | 2011-09-14 | Mixed unit of foam metal bulb tube combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266317U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345488A (en) * | 2011-09-14 | 2012-02-08 | 中国第一汽车股份有限公司 | Mixed unit of foam metal ball pipe assembly |
| CN104043274A (en) * | 2014-05-20 | 2014-09-17 | 昆山协多利洁净科技有限公司 | Novel filtering structure |
| CN108468584A (en) * | 2018-05-04 | 2018-08-31 | 博格思众智能装备（昆山）有限公司 | It is atomized mixing tube and cleaning device of tail gas of diesel vehicle |
| CN109012759A (en) * | 2018-09-11 | 2018-12-18 | 河南城建学院 | MnO2/TiF catalyst and preparation method thereof |
-
2011
- 2011-09-14 CN CN2011203437695U patent/CN202266317U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345488A (en) * | 2011-09-14 | 2012-02-08 | 中国第一汽车股份有限公司 | Mixed unit of foam metal ball pipe assembly |
| CN102345488B (en) * | 2011-09-14 | 2016-04-20 | 中国第一汽车股份有限公司 | The mixed cell of foam metal bulb tube combination and manufacturing process thereof |
| CN104043274A (en) * | 2014-05-20 | 2014-09-17 | 昆山协多利洁净科技有限公司 | Novel filtering structure |
| CN108468584A (en) * | 2018-05-04 | 2018-08-31 | 博格思众智能装备（昆山）有限公司 | It is atomized mixing tube and cleaning device of tail gas of diesel vehicle |
| CN109012759A (en) * | 2018-09-11 | 2018-12-18 | 河南城建学院 | MnO2/TiF catalyst and preparation method thereof |
| CN109012759B (en) * | 2018-09-11 | 2022-03-04 | 河南城建学院 | MnO2TiF catalyst and preparation method thereof |
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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: 20120606 Termination date: 20190914 |