CN105386831A - Nozzle in marine engine tail gas treatment system - Google Patents
Nozzle in marine engine tail gas treatment system Download PDFInfo
- Publication number
- CN105386831A CN105386831A CN201510916800.2A CN201510916800A CN105386831A CN 105386831 A CN105386831 A CN 105386831A CN 201510916800 A CN201510916800 A CN 201510916800A CN 105386831 A CN105386831 A CN 105386831A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- tail gas
- processing system
- mixing tube
- gas processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a nozzle in a marine engine tail gas treatment system. The marine engine tail gas treatment system comprises a catalytic silencer. The catalytic silencer is provided with a mixing pipe. The nozzle is used for being installed on the mixing pipe. The nozzle comprises a spray pipe, a heat insulation sleeve and a nozzle head, wherein the end of the spray pipe is provided with a bent section, and the spray pipe is used for being inserted into the mixing pipe from the side wall of the mixing pipe; the section, located on the mixing pipe, of the spray pipe is wrapped with the heat insulation sleeve, and the spray pipe is installed in the side wall of the mixing pipe through the heat insulation sleeve; the nozzle head is embedded in the side wall of the front end of the heat insulation sleeve, inserted in the bent section and located in the position of the central axis of the mixing pipe. By the adoption of the nozzle in the marine engine tail gas system, the risk of high-temperature crystallization of urea is avoided.
Description
Technical field
The present invention relates to vent gas treatment, the nozzle particularly in a kind of ship tail gas processing system.
Background technique
SCR ejecting system is used in diesel engine post-processing system, for eliminating exhaust contaminant NO
xsystem.SCR ejecting system comprises and adds blue tank, air-strainer, metering ejector pump, antifreeze liquid solenoid valve, DCU assembly, nozzle and connecting pipeline.The pressurized air cleaned through air-strainer, by controlling metering ejector pump by DCU, mixing through the blue liquid that adds that antifreeze liquid is preheated with adding in blue tank, measuring through nozzle ejection in mixer according to actual needs, with NO by this system
xthere is reduction reaction and generate nitrogen and water.Nozzle effect is in the entire system most important, determines the atomizing effect of urea, thus affects the performance of whole system.
But because the outlet pipe caliber of ship machine is large compared with vehicular engine, and air displacement is large, if directly utilize current nozzle, there is the technical problem of the easy high temperature crystallization of urea.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide the nozzle in a kind of ship tail gas processing system, avoid the risk of urea high temperature crystallization.
For achieving the above object, the invention provides the nozzle in a kind of ship tail gas processing system, this ship tail gas processing system comprises catalytic muffler, this catalytic muffler has mixing tube, this nozzle is used for being arranged on mixing tube, this nozzle comprises: jet pipe, and its termination has bend section, and jet pipe is used for being plugged in mixing tube from the sidewall of mixing tube; Collet, the nozzle section be in mixing tube wraps by it, and jet pipe is arranged on the sidewall of mixing tube by collet; And nozzle tip, it is inlaid on the sidewall of the front end of collet, and this nozzle tip and bend section are plugged in together, and nozzle tip is in the axial centerline of mixing tube.
Preferably, nozzle tip has four nozzle bores.
Preferably, the aperture of nozzle bore is 0.5mm.
Preferably, the angle of inclination of nozzle bore is 25 °.
Preferably, collet comprises sleeve pipe and is plugged on the end cap of this sleeve port, and jet pipe is through end cap.
Preferably, the tail end of jet pipe is connected with adapter.
Preferably, nozzle tip is end cap, and this end cap is inlaid on the sidewall of the front end of collet by sidewall, the roof outwardly convex of end cap.
Compared with prior art, the present invention has following beneficial effect: by being wrapped up by complete for the jet pipe being positioned at mixer section collet, the purification solving ship tail gas is different from the difference of general car tail gas, avoids jet pipe to affect by excessive temperature and causes urea high temperature crystallization.In addition, adopt four nozzle bores, nozzle hole angle is 25 °, and aperture is the design of 0.5mm, is conducive to ship tail gas and mixes fully with appropriate quantity aqueous solution of urea, thus promote the purification of follow-up tail gas.
Accompanying drawing explanation
Fig. 1 is the sectional view according to the nozzle in ship tail gas processing system of the present invention;
Fig. 2 is the partial schematic diagram according to the nozzle in ship tail gas processing system of the present invention;
Fig. 3 is the plan view according to nozzle tip in the nozzle in ship tail gas processing system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As shown in Figure 1 to Figure 2, according to the nozzle in a kind of ship tail gas processing system of the specific embodiment of the invention, this ship tail gas processing system comprises catalytic muffler, this catalytic muffler has mixing tube, this nozzle is used for being arranged on mixing tube, and this nozzle comprises jet pipe 1, collet and nozzle tip 3.Wherein the termination of jet pipe 1 has bend section 11 (see Fig. 2), jet pipe 1 is used for being plugged in mixing tube from the sidewall of mixing tube, the nozzle section be in mixing tube wraps by collet, jet pipe 1 is arranged on the sidewall of mixing tube by collet, nozzle tip 3 is inlaid on the sidewall of the front end of collet, this nozzle tip 3 is plugged in together with bend section 11, and nozzle tip 3 is in the axial centerline of mixing tube.
In such scheme, the entire length of nozzle is greater than 200mm, is about 212mm, and this length coordinates existing nozzle carrier to use, and the central axis making aqueous solution of urea just be positioned at the mixing tube of catalytic muffler sprays, and this is conducive to fully mixing of urea and tail gas.The full section collet of jet pipe being positioned at mixer wraps up, and the purification solving ship tail gas is different from the difference of general car tail gas, avoids the risk of urea high temperature crystallization.
As a kind of preferred embodiment, nozzle tip 3 has four nozzle bores 31 (see Fig. 3).
As a kind of preferred embodiment, the aperture d of nozzle bore 31 is 0.5mm.
As a kind of preferred embodiment, the tilt angle alpha of nozzle bore 31 is 25 °.
As a kind of preferred embodiment, collet comprises sleeve pipe 21 and is plugged on the end cap 22 of this sleeve port, and jet pipe 1 is through end cap 22 (participation Fig. 1).
As a kind of preferred embodiment, the tail end of jet pipe 1 is connected with adapter 4.
As a kind of preferred embodiment, nozzle tip 31 is end cap, and this end cap is inlaid on the sidewall of the front end of collet by sidewall, the roof outwardly convex (see Fig. 2) of end cap.
To sum up, nozzle in the ship tail gas processing system of the present embodiment, wrapped up by complete for the jet pipe being positioned at mixer section collet, the purification solving ship tail gas is different from the difference of general car tail gas, avoids jet pipe to affect by excessive temperature and causes urea high temperature crystallization.In addition, adopt four nozzle bores, nozzle hole angle is 25 °, and aperture is the design of 0.5mm, is conducive to ship tail gas and mixes fully with appropriate quantity aqueous solution of urea, thus promote the purification of follow-up tail gas.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (7)
1. the nozzle in ship tail gas processing system, this ship tail gas processing system comprises catalytic muffler, and this catalytic muffler has mixing tube, and this nozzle is used for being arranged on described mixing tube, it is characterized in that, this nozzle comprises:
Jet pipe, its termination has bend section, and described jet pipe is used for being plugged in described mixing tube from the sidewall of described mixing tube;
Collet, the nozzle section be in described mixing tube wraps by it, and described jet pipe is arranged on the sidewall of described mixing tube by described collet; And
Nozzle tip, it is inlaid on the sidewall of the front end of described collet, and this nozzle tip and described bend section are plugged in together, and described nozzle tip is in the axial centerline of described mixing tube.
2. the nozzle in ship tail gas processing system according to claim 1, it is characterized in that, described nozzle tip has four nozzle bores.
3. the nozzle in ship tail gas processing system according to claim 2, is characterized in that, the aperture of described nozzle bore is 0.5mm.
4. the nozzle in ship tail gas processing system according to claim 3, is characterized in that, the angle of inclination of described nozzle bore is 25 °.
5. the nozzle in ship tail gas processing system according to claim 1, is characterized in that, described collet comprises sleeve pipe and is plugged on the end cap of this sleeve port, and described jet pipe is through described end cap.
6. the nozzle in ship tail gas processing system according to claim 1, it is characterized in that, the tail end of described jet pipe is connected with adapter.
7. the nozzle in ship tail gas processing system according to claim 1, it is characterized in that, described nozzle tip is end cap, and this end cap is inlaid on the sidewall of the front end of described collet by sidewall, the roof outwardly convex of described end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916800.2A CN105386831A (en) | 2015-12-10 | 2015-12-10 | Nozzle in marine engine tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916800.2A CN105386831A (en) | 2015-12-10 | 2015-12-10 | Nozzle in marine engine tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105386831A true CN105386831A (en) | 2016-03-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510916800.2A Pending CN105386831A (en) | 2015-12-10 | 2015-12-10 | Nozzle in marine engine tail gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105386831A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150625A (en) * | 2016-08-26 | 2016-11-23 | 广西玉柴机器股份有限公司 | A kind of urea nozzle of band heat shield |
| CN106523100A (en) * | 2016-12-19 | 2017-03-22 | 凯龙高科技股份有限公司 | Axial injection urea injector |
| CN109339926A (en) * | 2018-09-30 | 2019-02-15 | 潍柴动力股份有限公司 | A kind of end-cap assembly and after-treatment system |
| GB2591965A (en) * | 2019-06-26 | 2021-08-11 | Cummins Emission Solutions Inc | Liquid only lance injector |
Citations (8)
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|---|---|---|---|---|
| DE102006061790A1 (en) * | 2006-12-21 | 2008-06-26 | J. Eberspächer GmbH & Co. KG | Exhaust system for an internal combustion engine |
| CN202238363U (en) * | 2011-09-19 | 2012-05-30 | 苏州派格力减排系统有限公司 | Atomizing nozzle for reducing agent in SCR (Selective Catalytic Reduction) system |
| JP2012127232A (en) * | 2010-12-14 | 2012-07-05 | Ud Trucks Corp | Exhaust pipe structure for exhaust emission control device |
| CN102913310A (en) * | 2011-08-05 | 2013-02-06 | 广西玉柴机器股份有限公司 | SCR (selective catalytic reduction) post-processing nozzle for increasing conversion rate of NOx (nitrogen oxides) |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea nozzle assembly of automobile internal combustion engine |
| CN204572141U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | Automobile SCR system new urea spray nozzle device |
| CN204572139U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | A kind of automobile SCR system urea feedway |
| CN205154323U (en) * | 2015-12-10 | 2016-04-13 | 广西玉柴机器股份有限公司 | Nozzle among ship machine vent gas treatment system in |
-
2015
- 2015-12-10 CN CN201510916800.2A patent/CN105386831A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006061790A1 (en) * | 2006-12-21 | 2008-06-26 | J. Eberspächer GmbH & Co. KG | Exhaust system for an internal combustion engine |
| JP2012127232A (en) * | 2010-12-14 | 2012-07-05 | Ud Trucks Corp | Exhaust pipe structure for exhaust emission control device |
| CN102913310A (en) * | 2011-08-05 | 2013-02-06 | 广西玉柴机器股份有限公司 | SCR (selective catalytic reduction) post-processing nozzle for increasing conversion rate of NOx (nitrogen oxides) |
| CN202238363U (en) * | 2011-09-19 | 2012-05-30 | 苏州派格力减排系统有限公司 | Atomizing nozzle for reducing agent in SCR (Selective Catalytic Reduction) system |
| CN104696052A (en) * | 2015-03-09 | 2015-06-10 | 东风商用车有限公司 | SCR urea nozzle assembly of automobile internal combustion engine |
| CN204572141U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | Automobile SCR system new urea spray nozzle device |
| CN204572139U (en) * | 2015-04-27 | 2015-08-19 | 十堰市倍力汽车管业有限公司 | A kind of automobile SCR system urea feedway |
| CN205154323U (en) * | 2015-12-10 | 2016-04-13 | 广西玉柴机器股份有限公司 | Nozzle among ship machine vent gas treatment system in |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150625A (en) * | 2016-08-26 | 2016-11-23 | 广西玉柴机器股份有限公司 | A kind of urea nozzle of band heat shield |
| CN106523100A (en) * | 2016-12-19 | 2017-03-22 | 凯龙高科技股份有限公司 | Axial injection urea injector |
| CN109339926A (en) * | 2018-09-30 | 2019-02-15 | 潍柴动力股份有限公司 | A kind of end-cap assembly and after-treatment system |
| GB2591965A (en) * | 2019-06-26 | 2021-08-11 | Cummins Emission Solutions Inc | Liquid only lance injector |
| GB2591965B (en) * | 2019-06-26 | 2022-02-09 | Cummins Emission Solutions Inc | Liquid only lance injector |
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Application publication date: 20160309 |
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