CN107178409A - A kind of external mix formula rotary atomizing nozzle - Google Patents
A kind of external mix formula rotary atomizing nozzle Download PDFInfo
- Publication number
- CN107178409A CN107178409A CN201710409602.6A CN201710409602A CN107178409A CN 107178409 A CN107178409 A CN 107178409A CN 201710409602 A CN201710409602 A CN 201710409602A CN 107178409 A CN107178409 A CN 107178409A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- cyclone
- rotary atomizing
- formula rotary
- cover
- 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
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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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention provides a kind of external mix formula rotary atomizing nozzle, including nozzle body and air inlet pipe, the nozzle body is funnel-shaped structure, cyclone is installed inside the nozzle body, the cyclone is by the nozzle body internal insulation into nozzle epicoele and nozzle cavity of resorption, nozzle cover is installed at the top of the nozzle body, the nozzle cover is provided with inlet, one end of air inlet pipe is located at the top of the nozzle cover, and the other end sequentially passes through the nozzle cover, the nozzle epicoele, the cyclone and extends to the nozzle cavity of resorption.External mix formula rotary atomizing nozzle of the present invention, by installing cyclone in nozzle interior, aqueous solution of urea produces liquid cyclone by cyclone, and makes liquid crushing, atomization using pressure-air, realizes thinner, droplet evenly；SCR system NH_3 leakage, the risk of spray nozzle clogging are effectively reduced, is conducive to the raising of NOx conversion efficiency.
Description
Technical field
The invention belongs to hydrodynamics technology field, more particularly, to a kind of external mix formula rotary atomizing nozzle.
Background technology
Existing SCR (SCR technology) urea injection systems mainly have two kinds by jet atomization form, i.e.,
The SCR urea injection systems of air auxiliary and the SCR urea injection systems aided in without air.As Abgasgesetz is more and more tighter
Lattice, tail gas disposal technique also becomes increasingly complex, to aqueous solution of urea pulverization quality requirements also more and more higher.
Conventional air auxiliary urea injection system is usually to realize air-liquid mixed aerosol at urea metering pump discharge,
Sprayed again by simple nozzle arrangements, the fogging degree of this structure is not good, and there is NH_3 leakage, the risk of spray nozzle clogging.
The content of the invention
In view of this, the present invention is directed to propose a kind of external mix formula rotary atomizing nozzle, auxiliary to solve existing air
Help urea injection system fogging degree not good, transformation efficiency is low, NH_3 leakage, the problem of spray nozzle clogging risk is high.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of external mix formula rotary atomizing nozzle, including nozzle body, nozzle cover, cyclone and air inlet pipe, the spray
Mouth body is to install the cyclone inside funnel-shaped structure, the nozzle body, and the cyclone is by the nozzle body
Portion is isolated into nozzle epicoele and nozzle cavity of resorption, installs the nozzle cover at the top of the nozzle body, the nozzle cover be provided with into
Liquid mouthful, one end of the air inlet pipe is located at the top of the nozzle cover, and the other end sequentially passes through the nozzle cover, on the nozzle
Chamber, the cyclone extend to the nozzle cavity of resorption.
Further, the cyclone includes the upper and lower part of one, and the top is cylindrical structure, and the bottom is
Through hole is provided with frustum cone structure, the axial line of the cyclone, outer wall is provided with some swirl channels, the rotation of the bottom
Axis of the circulation road around the bottom spirals according to helical manner.
Further, the air inlet pipe is connected with the through hole interference of the cyclone.
Further, the nozzle cover is provided with jack, and the jack is welded with the air inlet pipe.
Further, the nozzle body is threadedly coupled with the nozzle cover, and is sealed by screw thread glue.
Relative to prior art, external mix formula rotary atomizing nozzle of the present invention has the advantage that：
(1) external mix formula rotary atomizing nozzle of the present invention, by installing cyclone, urea water in nozzle interior
Solution produces liquid cyclone by cyclone, and makes liquid crushing, atomization using pressure-air, realizes thinner, mist evenly
Drop；SCR system NH_3 leakage, the risk of spray nozzle clogging are effectively reduced, is conducive to the raising of NOx conversion efficiency.
(2) pass through after external mix formula rotary atomizing nozzle of the present invention, nozzle body and nozzle cover threaded connection
Screw thread glue is sealed, it is ensured that good air-tightness inside nozzle body.
(3) external mix formula rotary atomizing nozzle of the present invention, air inlet pipe and nozzle cover welding, easy disassembly and dimension
Shield maintenance, improves operating efficiency, while ensureing air-tightness good inside nozzle body.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the external mix formula rotary atomizing nozzle described in the embodiment of the present invention；
Fig. 2 is the structural representation of the cyclone described in the embodiment of the present invention.
Description of reference numerals：
1- nozzle bodies；2- nozzle covers；3- cyclones；31- through holes；32- swirl channels；4- air inlet pipe；5- inlets；6-
Nozzle epicoele；7- nozzle cavity of resorptions.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of external mix formula rotary atomizing nozzle, as depicted in figs. 1 and 2, including nozzle body 1, nozzle cover 2, eddy flow
Device 3 and air inlet pipe 4, the nozzle body 1 are funnel-shaped structure, facilitate solution under the influence of gravity；The nozzle sheet
The cyclone 3 is installed in the inside of body 1, and the cyclone 3 is by the internal insulation of nozzle body 1 under nozzle epicoele 6 and nozzle
The nozzle cover 2 is installed at chamber 7, the top of nozzle body 1, and the nozzle cover 2 is provided with inlet 5, the one of the air inlet pipe 4
End sequentially passes through the nozzle cover 2, the nozzle epicoele 6, the cyclone 3 and prolonged positioned at the top of the nozzle cover 2, the other end
Extend the nozzle cavity of resorption 7.
The cyclone 3 includes the upper and lower part of one, and the top is cylindrical structure, and the bottom is round platform knot
Through hole 31 is provided with structure, the axial line of the cyclone 3, outer wall is provided with some swirl channels 32, facilitates solution to flow out；It is described
Axis of the swirl channel 32 of bottom around the bottom spirals according to helical manner, after liquid flows out, by revolving force
Effect is easily atomized.
The air inlet pipe 4 is connected with the through hole interference of the cyclone 3, and interference connection specifically has simple in construction, centering
Good, large carrying capacity, the performance that withstands shocks are good, weaken the advantages of lacking to axle.
The nozzle cover 2 is provided with jack, and the jack is welded with the air inlet pipe 4, facilitates air inlet pipe 4 and sprayer lid 2
Integral disassembly, assembly and maintenance, while ensureing good air-tightness in nozzle body 1.
The nozzle body 1 is threadedly coupled with the nozzle cover 2, easy disassembly, and is sealed by screw thread glue, it is ensured that nozzle
Good air-tightness in body 1.
A kind of operation principle of external mix formula rotary atomizing nozzle is：
By air inlet pipe 4 through the jack on nozzle cover 2, in the through hole 31 that cyclone 3 is inserted by nozzle epicoele 6, and with
The interference of through hole 31 is connected, then cyclone 3 is put into nozzle body 1；The screw top connection nozzle cover 2 of nozzle body 1, and lead to
Cross the sealing of screw thread glue；Finally air inlet pipe 4 and the jack of nozzle cover 2 are welded together；
Solution is poured into nozzle epicoele 6 by inlet 5, solution is entered by swirl channel 32 under gravity
In nozzle cavity of resorption 7, now pressure-air is also entered in nozzle cavity of resorption 7 by air inlet pipe 4, and the liquid collision rift with eddy flow is formed
Air atomizing mixed liquor sprayed again by the spray orifice of nozzle body 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (5)
1. a kind of external mix formula rotary atomizing nozzle, it is characterised in that：Including nozzle body (1), nozzle cover (2), cyclone
(3) and air inlet pipe (4),
The nozzle body (1) is to install the cyclone (3), the eddy flow inside funnel-shaped structure, the nozzle body (1)
Device (3) by the nozzle body (1) internal insulation into nozzle epicoele (6) and nozzle cavity of resorption (7), at the top of the nozzle body (1)
The nozzle cover (2) is installed, the nozzle cover (2) is provided with inlet (5), and one end of the air inlet pipe (4) is located at the spray
The top of mouth lid (2), the other end sequentially passes through the nozzle cover (2), the nozzle epicoele (6), the cyclone (3) and extended to
The nozzle cavity of resorption (7).
2. a kind of external mix formula rotary atomizing nozzle according to claim 1, it is characterised in that：The cyclone (3)
Include the upper and lower part of one, the top is cylindrical structure, and the bottom is frustum cone structure, the axle of the cyclone (3)
Through hole (31) is provided with heart line, outer wall is provided with some swirl channels (32), and the swirl channel (32) of the bottom is around described
The axis of bottom spirals according to helical manner.
3. a kind of external mix formula rotary atomizing nozzle according to claim 2, it is characterised in that：The air inlet pipe (4)
Through hole interference with the cyclone (3) is connected.
4. a kind of external mix formula rotary atomizing nozzle according to claim 1, it is characterised in that：The nozzle cover (2)
Jack is provided with, the jack is welded with the air inlet pipe (4).
5. a kind of external mix formula rotary atomizing nozzle according to claim 1, it is characterised in that：The nozzle body
(1) it is threadedly coupled, and is sealed by screw thread glue with the nozzle cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409602.6A CN107178409A (en) | 2017-06-02 | 2017-06-02 | A kind of external mix formula rotary atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409602.6A CN107178409A (en) | 2017-06-02 | 2017-06-02 | A kind of external mix formula rotary atomizing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107178409A true CN107178409A (en) | 2017-09-19 |
Family
ID=59835668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710409602.6A Pending CN107178409A (en) | 2017-06-02 | 2017-06-02 | A kind of external mix formula rotary atomizing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178409A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420768A (en) * | 2018-12-04 | 2019-11-08 | 西安成立航空制造有限公司 | A kind of nozzle cyclone |
| CN113197080A (en) * | 2021-05-06 | 2021-08-03 | 佛山一本农业科技有限公司 | Cyclone atomization anti-blocking sprayer |
| CN115382681A (en) * | 2022-08-03 | 2022-11-25 | 中北大学 | Water mist nozzle of suspension dust |
| CN110420768B (en) * | 2018-12-04 | 2024-04-30 | 西安成立航空制造有限公司 | Swirler for nozzle |
Citations (9)
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|---|---|---|---|---|
| CN101450339A (en) * | 2007-12-04 | 2009-06-10 | 现代自动车株式会社 | Nozzle system for injector |
| CN101491794A (en) * | 2009-01-08 | 2009-07-29 | 浙江大学 | High-speed jet gas-liquid mixing-phase ejector |
| CN203822427U (en) * | 2014-03-21 | 2014-09-10 | 大连海事大学 | Selective catalytic reduction denitration system for tail gas of ship diesel machine |
| CN205008133U (en) * | 2015-07-30 | 2016-02-03 | 东莞市长原喷雾技术有限公司 | Novel outer automobile -used urea nozzle of formula that mixes |
| CN205532799U (en) * | 2016-02-02 | 2016-08-31 | 东莞正扬电子机械有限公司 | Urea sprayer for SCR |
| CN106121783A (en) * | 2016-06-29 | 2016-11-16 | 中国北方发动机研究所(天津) | A kind of air mixing atomizing nozzle of SCR |
| CN106150612A (en) * | 2016-07-04 | 2016-11-23 | 武汉理工大学 | Gas jet type adds blue combined jet device and application thereof |
| KR20170001970A (en) * | 2015-06-29 | 2017-01-06 | 두산엔진주식회사 | Oil burner with decomposition chamber |
| WO2017073363A1 (en) * | 2015-10-30 | 2017-05-04 | 株式会社デンソー | Urea water injection device |
-
2017
- 2017-06-02 CN CN201710409602.6A patent/CN107178409A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101450339A (en) * | 2007-12-04 | 2009-06-10 | 现代自动车株式会社 | Nozzle system for injector |
| CN101491794A (en) * | 2009-01-08 | 2009-07-29 | 浙江大学 | High-speed jet gas-liquid mixing-phase ejector |
| CN203822427U (en) * | 2014-03-21 | 2014-09-10 | 大连海事大学 | Selective catalytic reduction denitration system for tail gas of ship diesel machine |
| KR20170001970A (en) * | 2015-06-29 | 2017-01-06 | 두산엔진주식회사 | Oil burner with decomposition chamber |
| CN205008133U (en) * | 2015-07-30 | 2016-02-03 | 东莞市长原喷雾技术有限公司 | Novel outer automobile -used urea nozzle of formula that mixes |
| WO2017073363A1 (en) * | 2015-10-30 | 2017-05-04 | 株式会社デンソー | Urea water injection device |
| CN205532799U (en) * | 2016-02-02 | 2016-08-31 | 东莞正扬电子机械有限公司 | Urea sprayer for SCR |
| CN106121783A (en) * | 2016-06-29 | 2016-11-16 | 中国北方发动机研究所(天津) | A kind of air mixing atomizing nozzle of SCR |
| CN106150612A (en) * | 2016-07-04 | 2016-11-23 | 武汉理工大学 | Gas jet type adds blue combined jet device and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420768A (en) * | 2018-12-04 | 2019-11-08 | 西安成立航空制造有限公司 | A kind of nozzle cyclone |
| CN110420768B (en) * | 2018-12-04 | 2024-04-30 | 西安成立航空制造有限公司 | Swirler for nozzle |
| CN113197080A (en) * | 2021-05-06 | 2021-08-03 | 佛山一本农业科技有限公司 | Cyclone atomization anti-blocking sprayer |
| CN115382681A (en) * | 2022-08-03 | 2022-11-25 | 中北大学 | Water mist nozzle of suspension dust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170919 |
|
| RJ01 | Rejection of invention patent application after publication |