CN111535908A - Urea solution atomizer and urea solution injection apparatus - Google Patents
Urea solution atomizer and urea solution injection apparatus Download PDFInfo
- Publication number
- CN111535908A CN111535908A CN202010478718.7A CN202010478718A CN111535908A CN 111535908 A CN111535908 A CN 111535908A CN 202010478718 A CN202010478718 A CN 202010478718A CN 111535908 A CN111535908 A CN 111535908A
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- Prior art keywords
- urea solution
- swirl
- block
- whirl
- hole
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000004202 carbamide Substances 0.000 title claims abstract description 72
- 239000000243 solution Substances 0.000 title claims abstract description 65
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
Images
Classifications
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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
- 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
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- 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
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- 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
-
- 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
- F01N2610/146—Control thereof, e.g. control of injectors or injection valves
-
- 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
Landscapes
- 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)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a urea solution atomizer which comprises a swirl block and a throttling block, wherein the upper part of the swirl block is opposite to a urea solution outlet, the upper surface of the swirl block is provided with a flow guide channel extending to the side surface of the swirl block, the lower surface of the swirl block is provided with a blind hole extending inwards, the throttling block is embedded in an orifice of the blind hole, so that a swirl cavity is formed inside the swirl block, the side surface of the swirl block is provided with a swirl groove extending inwards, the swirl groove communicates the flow guide channel with the swirl cavity, the upper surface of the throttling block is provided with a tapered hole, the lower surface of the throttling block is provided with a throttling hole extending to the tapered hole, and the swirl cavity is communicated outwards. The atomizer has a certain tangential speed when urea solution is sprayed out of the throttling hole, so that liquid drops are broken, a smaller atomization particle size is formed, the atomization quality is optimized, and the atomization effect is remarkable. The invention also discloses a urea solution injection device.
Description
Technical Field
The invention relates to the technical field of internal combustion engine tail gas aftertreatment, in particular to a urea solution atomizer and a urea solution spraying device for a diesel engine selective catalytic conversion system.
Background
Diesel aftertreatment systems typically employ a selective catalytic reduction system SCR to remove nitrogen oxides contained in the exhaust. Therefore, the urea aqueous solution is required to be sprayed into the exhaust pipe, ammonia gas is formed through hydrolysis and pyrolysis, and then nitrogen oxides are catalytically reduced into harmless nitrogen and water through the catalytic carrier, so that the purpose of tail gas treatment is realized. In order to meet increasingly stringent emissions regulations, diesel aftertreatment systems have increasingly high injection accuracy requirements for urea injection systems. The electric control airless urea-assisting nozzle can accurately realize urea injection with fixed time and quantity, is not limited by a compressed air source in the application process, and gradually becomes the main stream of the market.
The supply pressure of the urea solution injection system is typically 400-900 kPa, which is a low pressure injection. Under the condition of no air assistance, the existing atomizer structure is difficult to realize good atomization effect, and the spray particle size is larger. The urea solution is sprayed into the exhaust pipe, liquid films are easily formed on the head of the nozzle, the mixer and the pipe wall, urea crystallization is caused, the exhaust pipe is blocked, exhaust emission exceeds standard, and even an engine can be damaged under severe conditions. The above problems become key problems for successful application of urea solution injection devices, and need to be solved urgently.
Disclosure of Invention
The invention aims to provide a urea solution atomizer to solve the problems of poor atomization effect and large spray particle size of an atomizer used for a selective catalytic conversion system of a diesel engine in the prior art.
The invention also aims to provide a urea solution injection device to solve the problem that urea is easy to crystallize and block an exhaust pipeline in the injection device for the selective catalytic conversion system of the diesel engine in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a urea solution atomizer, it includes whirl piece and throttle piece, the upper portion of whirl piece is just to the urea solution liquid outlet, and set up the water conservancy diversion way that extends to whirl piece side surface on the upper surface, set up the blind hole of inside extension on the lower surface of whirl piece, the throttle piece dress inlays in the drill way of blind hole, thereby form the whirl chamber in the inside of whirl piece, set up the whirl groove of inside extension on the side surface of whirl piece, the whirl groove is with water conservancy diversion way and whirl chamber intercommunication, the bell mouth has been seted up on the upper surface of throttle piece, set up the orifice that extends to the bell mouth on the lower surface, thereby outwards switch on the whirl chamber.
Particularly, the plurality of swirl grooves are circumferentially and uniformly distributed on the periphery of the swirl cavity and are eccentrically connected with the swirl cavity.
In particular, the eccentricity of the swirl slots is not greater than the difference in radii of the swirl chamber and the swirl slots.
Particularly, the sectional area of the flow guide channel, the sectional area of the rotational flow groove and the sectional area of the throttling hole are sequentially reduced.
In particular, the flow leader does not extend to the lower surface of the vortex block.
In particular, the orifice hole transitions into engagement with the tapered hole fillet.
In particular, the lower surface of the swirl block is flush with the lower surface of the throttle block.
A urea solution spraying device comprises an ejector main body, a guide pipe, a valve body assembly and the urea solution atomizer, wherein the guide pipe is communicated with a liquid outlet of the ejector main body, the valve body assembly is arranged in the guide pipe to control a flow passage of the guide pipe to be smooth or blocked, and the urea solution atomizer is arranged at the end part of the guide pipe to form sealing.
Particularly, the upper surface of a rotational flow block of the urea solution atomizer is attached to the valve body assembly, the urea solution passes through a rotational flow groove of the urea solution atomizer to obtain a certain tangential speed, the breaking of liquid drops is accelerated, the atomized particle size is reduced, and finally the urea solution is sprayed out from a throttling hole of the urea solution atomizer.
Particularly, the valve body assembly comprises a valve seat and a sealing steel ball driven by an armature, the valve seat is sealed and fixed with the inner wall of the guide pipe, the lower surface of the valve seat is attached to the rotational flow block, a cavity is formed in the upper surface of the valve seat, a through hole penetrating to the lower surface of the valve seat is formed in the bottom of the cavity, the sealing steel ball moves up and down in the cavity, and when the sealing steel ball moves to a lower limit position, the sealing steel ball forms spherical surface sealing on the through hole.
To sum up, adopt above-mentioned structure urea solution atomizer and urea solution injection apparatus, steerable urea solution gets into the whirl chamber through the whirl groove, form circumference tangential velocity in the whirl intracavity, the conical surface of whirl chamber bottom can reduce the loss of circumference tangential velocity, and then certain tangential velocity has when making urea solution blowout orifice, accelerate the breakage of liquid drop, form less atomizing particle diameter, optimize the atomizing quality, the atomization effect is showing, and the urea crystallization that current injection apparatus appears easily has been improved, block up exhaust pipe scheduling problem.
Drawings
FIG. 1 is a schematic diagram of a urea solution atomizer according to an embodiment of the present invention;
FIG. 2 is a schematic internal view of a urea solution atomizer according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a urea solution injection device according to an embodiment of the present invention;
FIG. 4 is an enlarged view at A in FIG. 3;
FIG. 5 is a schematic flow diagram of the urea solution of FIG. 3 with the valve body assembly open.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings.
Referring to fig. 1 to 5, the present embodiment provides a urea solution atomizer, which includes a cyclone block 1 and a throttle block 2.
Offer the water conservancy diversion 3 that extends to the 1 side surface of whirl piece on the upper surface of whirl piece 1, set up the blind hole of inside extension on the lower surface of whirl piece 1, throttle piece 2 dress inlays in the drill way of blind hole, both interference fit, thereby form whirl chamber 4 in the inside of whirl piece 1, set up the whirl groove 5 of inside extension on the side surface of whirl piece 1, whirl groove 5 communicates water conservancy diversion 3 and whirl chamber 4, bell mouth 6 has been seted up on the upper surface of throttle piece 2, set up on the lower surface and extend to the orifice 7 of bell mouth 6, orifice 7 and 6 fillet transitional coupling of bell mouth, thereby outwards switch on whirl chamber 4.
The rotational flow block 1 is manufactured by machining, wherein the rotational flow groove 5 is manufactured by one or more methods of electric spark, laser and machining, the manufacturing is convenient, the production precision is controllable, and the cost is low. The throttle block 2 is manufactured by machining, wherein the throttle hole 7 is manufactured by one or more methods of electric spark, laser and machining, so that the throttle block is convenient to manufacture, controllable in production precision and low in cost.
Wherein, a plurality of whirl grooves 5 are evenly distributed on the periphery of the whirl chamber 4 in the circumferential direction and eccentrically connected with the whirl chamber, and four whirl grooves 5 are exemplified in the embodiment.
It is emphasized that the eccentricity of the swirl slots 5 should be no greater than the difference between the radii of the swirl chamber 4 and the swirl slots 5, and the edges of the swirl slots 5 should be tangential to the swirl chamber 4 to provide sufficient swirl tangential force. The sectional area of the guide flow passage 3, the sectional area of the swirl flow groove 5 and the sectional area of the orifice 7 are decreased in sequence to provide sufficient external jet force.
In addition, the diversion channel 3 does not extend to the lower surface of the cyclone block 1, and the lower surface of the cyclone block 1 is flush with the lower surface of the throttling block 2, so that the urea solution enters the cyclone cavity 4 according to the upper surface of the cyclone block 1 and is finally sprayed out of the throttling hole 7.
The embodiment also provides a urea solution spraying device which comprises an injector main body 8, a guide pipe 9, a valve body assembly and the urea solution atomizer. The guide pipe 9 is communicated with a liquid outlet of the ejector main body 8, the valve body assembly is arranged in the guide pipe 9, a flow passage of the guide pipe 9 is controlled to be smooth or blocked, and the urea solution atomizer is arranged at the end part of the guide pipe 9 and forms sealing.
The valve body assembly comprises a valve seat 10 and a sealing steel ball 11 driven by an armature 18, the valve seat 10 is fixed with the inner wall of the guide pipe 9 in a sealing mode, the lower surface of the valve seat 10 is attached to the rotational flow block 1, a cavity 12 is formed in the upper surface of the valve seat, a through hole 13 penetrating to the lower surface of the valve seat 10 is formed in the bottom of the cavity 12, the sealing steel ball 11 moves up and down in the cavity 12, and when the sealing steel ball 11 moves to a lower limit position, the sealing steel ball 11 forms spherical sealing on the through hole 13.
Specifically, the center magnet 14 is fitted to the upper end of the guide tube 9, and the guide tube 9 and the center magnet 14 are fixed by laser welding in an interference fit. A solenoid valve 15 is fitted outside the guide tube 9, and the solenoid valve 15 and the guide tube 9 are fixed together by an injection molded body 16. The guide tube 9 has an outward flange at its upper end, which forms a ring groove with the injection molded body 16 for mounting a sealing ring 17. The armature 18, the armature rod 19 and the sealing steel ball 11 are assembled into a whole through laser welding, the armature 18 is made of magnetic materials, the armature rod 19 and the armature 18 form a groove for placing the spring 20, the top of the spring 20 is in contact with the pressure adjusting block 21, the position of the pressure adjusting block 21 can be changed, and the pre-tightening force of the spring 20 can be adjusted. The valve seat 10 is in interference fit with the guide tube 9, the valve seat 10 is in contact with the sealing steel ball 11, and the gap between the armature 18 and the central magnet 14 can be controlled by changing the axial position of the valve seat 10, wherein the gap value is usually 0.05 mm-0.2 mm.
The upper surface of the cyclone block 1 of the urea solution atomizer is attached to the valve body assembly, and the urea solution passes through the cyclone groove 5 of the urea solution atomizer to obtain a certain tangential speed, so that the liquid drops are broken, the atomized particle size is reduced, and finally the urea solution is sprayed out from the throttle hole 7 of the urea solution atomizer.
To sum up, adopt above-mentioned structure urea solution atomizer and urea solution injection apparatus, steerable urea solution gets into the whirl chamber through the whirl groove, form circumference tangential velocity in the whirl intracavity, the conical surface of whirl chamber bottom can reduce the loss of circumference tangential velocity, and then certain tangential velocity has when making urea solution blowout orifice, accelerate the breakage of liquid drop, form less atomizing particle diameter, optimize the atomizing quality, the atomization effect is showing, and the urea crystallization that current injection apparatus appears easily has been improved, block up exhaust pipe scheduling problem.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the invention, which are intended to be within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a urea solution atomizer, its characterized in that, includes whirl piece and throttle piece, the upper portion of whirl piece is just to the urea solution liquid outlet, and sets up the water conservancy diversion way that extends to whirl piece side surface on the upper surface, set up the blind hole of inside extension on the lower surface of whirl piece, the throttle piece dress inlay in the drill way of blind hole to form the whirl chamber in the inside of whirl piece, set up the whirl groove of inside extension on the side surface of whirl piece, the whirl groove will the water conservancy diversion way with whirl chamber intercommunication, the bell mouth has been seted up on the upper surface of throttle piece, set up on the lower surface and extend to the orifice of bell mouth, thereby outwards switch on the whirl chamber.
2. A urea solution atomizer according to claim 1, characterized in that: the plurality of swirl grooves are circumferentially and uniformly distributed on the periphery of the swirl cavity and are eccentrically connected with the swirl cavity.
3. A urea solution atomizer according to claim 2, characterized in that: the eccentricity of the swirl groove is not more than the radius difference of the swirl cavity and the swirl groove.
4. A urea solution atomizer according to claim 1, characterized in that: the sectional area of the flow guide channel, the sectional area of the swirl groove and the sectional area of the throttling hole are sequentially reduced in a decreasing manner.
5. A urea solution atomizer according to claim 1, characterized in that: the flow guide channel does not extend to the lower surface of the vortex block.
6. A urea solution atomizer according to claim 1, characterized in that: the throttling hole is in transition connection with the round angle of the conical hole.
7. A urea solution atomizer according to claim 1, characterized in that: the lower surface of the rotational flow block is flush with the lower surface of the throttling block.
8. A urea solution spraying device, which is characterized by comprising an injector main body, a guide pipe, a valve body assembly and the urea solution atomizer as claimed in any one of claims 1 to 7, wherein the guide pipe is communicated with a liquid outlet of the injector main body, the valve body assembly is arranged in the guide pipe and controls the flow passage of the guide pipe to be unblocked or blocked, and the urea solution atomizer is arranged at the end part of the guide pipe and forms a seal.
9. The urea solution injection apparatus according to claim 8, wherein: the upper surface of the rotational flow block of the urea solution atomizer is attached to the valve body assembly, urea solution passes through the rotational flow groove of the urea solution atomizer to obtain a certain tangential speed, so that liquid drops are broken, the atomized particle size is reduced, and finally, the urea solution is sprayed out from the throttle hole of the urea solution atomizer.
10. The urea solution injection apparatus according to claim 9, wherein: the valve body assembly comprises a valve seat and a sealing steel ball driven by an armature, the valve seat is sealed and fixed with the inner wall of the guide pipe, the lower surface of the valve seat is attached to the cyclone block, a cavity is formed in the upper surface of the valve seat, a through hole penetrating to the lower surface of the valve seat is formed in the bottom of the cavity, the sealing steel ball moves up and down in the cavity, and when the sealing steel ball moves to a lower limit position, the sealing steel ball forms spherical sealing for the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478718.7A CN111535908B (en) | 2020-05-29 | 2020-05-29 | Urea solution atomizer and urea solution injection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010478718.7A CN111535908B (en) | 2020-05-29 | 2020-05-29 | Urea solution atomizer and urea solution injection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111535908A true CN111535908A (en) | 2020-08-14 |
| CN111535908B CN111535908B (en) | 2024-06-21 |
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| CN202010478718.7A Active CN111535908B (en) | 2020-05-29 | 2020-05-29 | Urea solution atomizer and urea solution injection apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022205862A1 (en) * | 2021-03-28 | 2022-10-06 | 南岳电控衡阳工业技术股份有限公司 | Low-hydraulic-pressure swirl injector |
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| EP1698768A1 (en) * | 2005-03-02 | 2006-09-06 | Hydraulik-Ring Gmbh | Injection device for the treatment of exhaust fumes motor vehicles |
| CN206329370U (en) * | 2016-12-19 | 2017-07-14 | 凯龙高科技股份有限公司 | A kind of urea injector of axially injection |
| CN106948909A (en) * | 2016-12-15 | 2017-07-14 | 中国第汽车股份有限公司 | A kind of porous extruding swirl injection valve |
| WO2018049850A1 (en) * | 2016-09-13 | 2018-03-22 | 天纳克（苏州）排放系统有限公司 | Nozzle assembly |
| CN110359987A (en) * | 2019-08-26 | 2019-10-22 | 昆山瑞泽汽车部件有限公司 | A kind of nozzle of the valve seat with eddy flow slot |
| CN110953044A (en) * | 2018-09-27 | 2020-04-03 | 昆山瑞泽汽车部件有限公司 | Porous urea nozzle and atomization structure thereof |
| CN212671899U (en) * | 2020-05-29 | 2021-03-09 | 凯龙高科技股份有限公司 | Urea solution atomizer and urea solution injection apparatus |
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2020
- 2020-05-29 CN CN202010478718.7A patent/CN111535908B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050235632A1 (en) * | 2004-04-26 | 2005-10-27 | Combustion Components Associates, Inc. | Methods and apparatus for injecting atomized fluid |
| EP1698768A1 (en) * | 2005-03-02 | 2006-09-06 | Hydraulik-Ring Gmbh | Injection device for the treatment of exhaust fumes motor vehicles |
| WO2018049850A1 (en) * | 2016-09-13 | 2018-03-22 | 天纳克（苏州）排放系统有限公司 | Nozzle assembly |
| CN106948909A (en) * | 2016-12-15 | 2017-07-14 | 中国第汽车股份有限公司 | A kind of porous extruding swirl injection valve |
| CN206329370U (en) * | 2016-12-19 | 2017-07-14 | 凯龙高科技股份有限公司 | A kind of urea injector of axially injection |
| CN110953044A (en) * | 2018-09-27 | 2020-04-03 | 昆山瑞泽汽车部件有限公司 | Porous urea nozzle and atomization structure thereof |
| CN110359987A (en) * | 2019-08-26 | 2019-10-22 | 昆山瑞泽汽车部件有限公司 | A kind of nozzle of the valve seat with eddy flow slot |
| CN212671899U (en) * | 2020-05-29 | 2021-03-09 | 凯龙高科技股份有限公司 | Urea solution atomizer and urea solution injection apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022205862A1 (en) * | 2021-03-28 | 2022-10-06 | 南岳电控衡阳工业技术股份有限公司 | Low-hydraulic-pressure swirl injector |
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