CN114060126A - Urea metering and spraying device - Google Patents
Urea metering and spraying device Download PDFInfo
- Publication number
- CN114060126A CN114060126A CN202111313578.9A CN202111313578A CN114060126A CN 114060126 A CN114060126 A CN 114060126A CN 202111313578 A CN202111313578 A CN 202111313578A CN 114060126 A CN114060126 A CN 114060126A
- Authority
- CN
- China
- Prior art keywords
- cooling
- annular
- urea
- cooling water
- water jacket
- 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.)
- Granted
Links
Images
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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/12—Arrangements for cooling other engine or machine parts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to the technical field of internal combustion engine tail gas aftertreatment, and discloses a urea metering injection device which comprises a cooling assembly, a nozzle assembly and a mounting assembly. The cooling assembly includes an annular cooling jacket having an inner cooling wall and an outer cooling wall that form an annular cooling cavity for receiving a cooling fluid. The nozzle assembly is used for spraying urea solution, and including injection portion and sealing part, the sealing part includes the ring-shaped seal cover, and in the ring-shaped cooling water cover was worn to locate by the injection portion, and the middle section of injection portion passed through the ring-shaped seal cover butt the cooling inner wall sets up, and the ring-shaped cooling water cover can realize better parcel to the injection portion for coolant liquid heat exchange is abundant, improves the cooling efficiency of ring-shaped cooling water cover, guarantees the normal work of injection portion. The part of the injection part extending out of the annular cooling water jacket is relatively fixed with the mounting assembly, the mounting assembly comprises a mounting seat, the annular cooling water jacket is inserted into the mounting seat and is connected to the exhaust pipeline through the mounting seat, and the assembly and disassembly are more convenient.
Description
Technical Field
The invention relates to the technical field of internal combustion engine tail gas aftertreatment, in particular to a urea metering and spraying device.
Background
The main pollutant in the exhaust gas of internal combustion engines, especially diesel engines, is NOXIn order to enable the diesel engine automobile to meet the requirements of national emission regulations, the aftertreatment system removes NO contained in tail gas by adopting a selective catalytic reduction system SCRXTypically, a 32.5% urea solution is injected into the exhaust pipe, hydrolyzed and pyrolyzed to form ammonia, and NO is passed through a catalytic carrierXCatalytically reduced to harmless nitrogen and water.
The urea injection device is installed on the exhaust pipe, and the exhaust pipe temperature is higher, leads to under urea injection device is often in the service environment of high temperature, and this leads to urea solution high temperature crystallization easily, blocks up the nozzle, causes unable completion catalytic reaction, causes exhaust emissions to exceed standard, can damage the engine even under the serious condition. In addition, the urea injection device has the advantages of precise structure, high processing precision and precise matching of parts, and if the device has increased failure rate in a high-temperature environment, the equipment cost is increased to a certain extent.
Therefore, a urea metering injection device is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a urea metering injection device, which aims to solve the problems of nozzle blockage and faults of an injection device and an engine caused by overhigh ambient temperature in the using process.
As the conception, the technical scheme adopted by the invention is as follows:
a urea dosing device comprising:
the cooling assembly comprises an annular cooling water jacket, the annular cooling water jacket comprises a cooling inner wall and a cooling outer wall, and the cooling inner wall and the cooling outer wall form an annular cooling cavity;
the nozzle assembly is used for spraying urea solution and comprises a spraying part and a sealing part, the sealing part comprises an annular sealing sleeve, one end of the spraying part is arranged in the annular cooling water jacket in a penetrating mode, the middle section of the spraying part is abutted to the cooling inner wall through the annular sealing sleeve, and the other end of the spraying part extends out of the annular cooling water jacket;
the installation assembly comprises a top cover, a clamping sleeve and an installation seat, wherein the top cover is abutted against the other end of the injection part and is connected with the annular cooling water jacket through the clamping sleeve, the installation seat is of an annular structure, the annular cooling water jacket is inserted into the installation seat, and the urea metering injection device is connected to an exhaust pipeline through the installation seat.
Optionally, the annular sealing sleeve is concave in a cross section perpendicular to the axial direction of the annular sealing sleeve, a step surface is arranged on the injection part, one end of the injection part is inserted into the annular sealing sleeve, the end surface of the annular sealing sleeve abuts against the step surface, and the outer wall surface of the annular sealing sleeve abuts against the cooling inner wall.
Optionally, the mounting assembly further comprises a hoop flange, the outer wall of the mounting seat is provided with mounting steps, the hoop flange can be used for fixing the mounting seat and the exhaust duct, and the hoop flange can abut against the mounting steps.
Optionally, the mounting assembly further comprises a sealing gasket, the sealing gasket being capable of being sandwiched between the mounting seat and the exhaust duct.
Optionally, the sealing portion further includes a sealing ring interposed between the other end of the injection portion and the top cover.
Optionally, the cutting sleeve is in threaded connection with the annular cooling water jacket, and the top cover is in welded connection with the cutting sleeve.
Optionally, be provided with urea liquid inlet joint on the top cap, urea liquid inlet joint communicate in the injection portion.
Optionally, the nozzle assembly further comprises a harness plug electrically connected to the ejection portion.
Optionally, the cooling assembly further includes a coolant joint, the coolant joint being inserted into the cooling outer wall, the coolant joint including an inlet coolant joint and an outlet coolant joint capable of communicating with the annular cooling cavity.
Optionally, the coolant joint is welded with the annular cooling water jacket; or
The cooling liquid joint is connected with the annular cooling water jacket in an inserting manner.
The invention has the beneficial effects that:
the invention provides a urea metering and spraying device which comprises a cooling assembly, a nozzle assembly and a mounting assembly. The cooling assembly includes an annular cooling jacket having an inner cooling wall and an outer cooling wall that form an annular cooling cavity for receiving a cooling fluid. The nozzle assembly is used for spraying urea solution, and including injection portion and sealing part, the sealing part includes the ring-shaped seal cover, and in the ring-shaped cooling water cover was worn to locate by the one end of injection portion, and the middle section of injection portion passes through the ring-shaped seal cover butt the cooling inner wall sets up, and the other end of injection portion stretches out the ring-shaped cooling water jacket and installs the subassembly relatively fixed, and under this setting, the ring-shaped cooling water jacket can realize better parcel to the nozzle assembly for the coolant liquid heat exchange in the ring-shaped cooling cavity is abundant, improves the cooling efficiency of ring-shaped cooling water jacket, guarantees that the nozzle assembly normally works. In addition, the installation component comprises a top cover, a clamping sleeve and an installation seat, specifically, the top cover is abutted against the other end of the injection part and is connected to the annular cooling water jacket through the clamping sleeve, and the annular cooling water jacket is inserted into the installation seat which is also of an annular structure, so that the urea metering injection device can be connected to the exhaust pipeline through the installation seat, and the urea metering injection device is convenient to disassemble and assemble.
Drawings
FIG. 1 is a sectional view of a urea dosing device according to an embodiment of the present invention.
In the figure:
1. a nozzle assembly; 2. an annular cooling water jacket; 3. a mounting seat; 31. mounting a step; 4. a top cover; 5. a card sleeve; 6. a coolant joint; 7. a urea liquid inlet joint; 8. a wire harness plug; 9. a seal ring; 10. sealing sleeves; 11. a gasket seal.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In order to solve the problem that the urea solution is easy to crystallize in the spraying process to block the nozzle in the high-temperature environment, so that the catalytic reaction is blocked, and the failure rate of the spraying device is increased, the embodiment provides the urea metering and spraying device, and the cooling assembly provided by the urea metering and spraying device can completely wrap the urea nozzle so as to reduce the influence of the temperature of the exhaust pipeline on the urea nozzle, improve the urea crystallization phenomenon at the urea nozzle part, and prolong the service life of the urea metering and spraying device.
As shown in fig. 1, the urea metering and injecting device provided by the embodiment includes a cooling component, a mounting component and a nozzle component 1 for injecting urea solution, wherein the nozzle component 1 mainly includes two parts, namely an injection part and a sealing part, urea solution can enter the injection part and is injected into an exhaust pipe through the injection part to realize catalytic reduction reaction of exhaust gas in the exhaust pipe, and the sealing part has one function of ensuring stable assembly of the injection part and the cooling component and the other function of ensuring no leakage of the urea solution in the process of entering the injection part. Specifically, the cooling assembly comprises an annular cooling water jacket 2 with a cooling inner wall and a cooling outer wall, and an annular cooling cavity is formed by the cooling inner wall and the cooling outer wall, it can be understood that the cooling liquid can be stored in the annular cooling cavity, and the injection part is arranged in the annular cooling water jacket 2, so that a good cooling effect of the cooling liquid on the injection part can be ensured.
In order to ensure the liquid inlet and cooling of the injection part, one end of the injection part is arranged in the annular cooling water jacket 2 in a penetrating mode, and the other end of the injection part extends out of the annular cooling water jacket 2. Wherein, sealing portion includes annular seal cover 10, and this annular seal cover 10 cover is located the injection portion to the accessible annular seal cover 10 of the interrupt of messenger injection portion and the setting of cooling inner wall butt. The relative fixation of one end of the injection part and the annular cooling water jacket 2 can be realized through the matching of one end of the injection part and the annular cooling water jacket 2 and the matching of the other end of the injection part and the mounting assembly.
In this embodiment, the cross section of the annular sealing sleeve 10 in the direction perpendicular to the axial direction thereof is concave, that is, the annular sealing sleeve 10 has a mounting cavity, and the injection portion is disposed in the annular sealing sleeve 10, wherein the broken portion is located in the mounting cavity, and is matched with the mounting cavity, the injection portion is provided with a step surface, when the injection portion is disposed in the annular sealing sleeve 10, the end surface of the annular sealing sleeve 10 abuts against the step surface, so as to limit the injection portion by the annular sealing sleeve 10, and the outer wall surface of the annular sealing sleeve 10 abuts against the cooling inner wall, so as to limit the annular cooling water jacket 10 by the annular cooling water jacket 2, under the arrangement, when the other end of the injection portion is fixed relatively by the mounting component, the middle section of the injection portion abuts against the annular cooling water jacket 2 through the annular sealing sleeve 10.
With continued reference to fig. 1, the mounting assembly includes a top cover 4 and a ferrule 5, wherein the top cover 4 is disposed against the other end of the injection portion and is connected to the annular cooling water jacket 2 through the ferrule 5, and under this arrangement, the top cover 4, the ferrule 5 and the annular cooling water jacket 2 can be fixed relatively, and the nozzle assembly 1 inserted into the annular cooling water jacket 2 is also fixed relatively. The mounting assembly further comprises a mounting seat 3, the mounting seat 3 is of an annular structure, and the annular cooling water jacket 2 is inserted into the mounting seat 3, so that the urea metering and injecting device can be connected to an exhaust pipeline (not shown in the figure) through the mounting seat 3.
In addition, the installation component further comprises a hoop flange (not shown in the figure), the hoop flange can be used for fixing the installation seat 3 and the exhaust pipeline, and when the exhaust pipeline and the installation seat 3 are fixed, the hoop flange can be annularly arranged on the periphery of the installation seat 3 and the periphery of the exhaust pipeline and fixed through fasteners. And the outer wall of mount pad 3 is equipped with installation step 31, and when the staple bolt flange was fixed in on mount pad 3 and the exhaust duct, the staple bolt flange then will butt in installation step 31 setting to avoid the staple bolt flange to remove along the axial direction of mount pad 3, locate the staple bolt flange card between installation step 31 and the terminal surface that has the exhaust duct.
The mounting 3 also has an annular groove in which the side wall of the exhaust conduit is located when the mounting 3 is fixed relative to the exhaust conduit, so that the urea solution can be completely injected into the exhaust conduit. And in order to guarantee the leakproofness of exhaust duct, avoid waste gas to reveal from the contact surface of exhaust duct and ring channel, the installation component still includes seal gasket 11, and this seal gasket 11 can press from both sides and locate between mount pad 3 and the exhaust duct, and the sealed pad that also promptly sets up in the ring channel.
Optionally, be provided with urea liquid inlet joint 7 on top cap 4, urea liquid inlet joint 7 can communicate in the injection portion, refer to fig. 1 and show, top cap 4 has the cavity of opening down, and the other end of injection portion can stretch into in this cavity, is provided with the interface that supplies urea solution to get into on the other end of injection portion, and when injection portion and top cap 4 installed in place, urea solution can get into in the injection portion through urea liquid inlet joint 7. Alternatively, the injection part comprises a nozzle on one end of the injection part, which nozzle can be passed into the exhaust duct, with which nozzle the urea solution can be injected into the exhaust duct.
Further, the sealing portion further comprises a sealing ring 9, the sealing ring 9 is sleeved on the outer peripheral surface of the other end of the injection portion, and when the top cover 4 is connected to the annular cooling water jacket 2 through the clamping sleeve 5, the sealing ring 9 is clamped between the other end of the injection portion and the top cover 4 to avoid leakage of the urea solution.
Furthermore, the cutting sleeve 5 is in threaded connection with the annular cooling water jacket 2, and the top cover 4 is in welded connection with the cutting sleeve 5. Namely, during assembly, the injection part sleeved with the annular sealing sleeve 10 can be firstly arranged in the annular cooling water jacket 2 in a penetrating manner, the clamping sleeve 5 corresponds to the annular cooling water jacket 2, the annular cooling water jacket 2 is screwed on the clamping sleeve 5, and then the top cover 4 is welded with the clamping sleeve 5. Optionally, the mounting seat 3 is welded with the annular cooling water jacket 2.
Optionally, the nozzle assembly 1 further comprises a wire harness plug 8, the wire harness plug 8 is electrically connected to the injection portion to control the injection action of the nozzle, when the annular cooling water jacket 2 is screwed with the ferrule 5 into a whole, an avoidance opening is formed on a side wall of the whole to expose the wire harness plug 8 to the outside of the annular cooling water jacket 2 and the ferrule 5, so that when the ferrule 5 is assembled on the annular cooling water jacket 2, the positions of the injection portion and the cooling assembly are fixed relatively.
Optionally, the cooling assembly further includes a coolant joint 6, the coolant joint 6 is inserted into the cooling outer wall, and the coolant joint 6 includes an inlet coolant joint and an outlet coolant joint capable of communicating with the annular cooling cavity, that is, the coolant enters the annular cooling cavity through the inlet coolant joint and then flows out from the outlet coolant joint.
Optionally, the coolant joint 6 is welded to the annular cooling jacket 2. In another embodiment, the coolant joint 6 can also be connected with the annular cooling water jacket 2 in a plugging manner. The end of the coolant joint 6, which is not connected with the annular cooling water jacket 2, is communicated with a coolant pipeline of a vehicle, when the urea metering injection device works, coolant forms a loop in the annular cooling water jacket 2, and the temperature conducted to the mounting seat 3 by the exhaust pipe can be taken away, so that the injection part is cooled.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A urea dosing device, comprising:
the cooling assembly comprises an annular cooling water jacket (2), the annular cooling water jacket (2) comprises a cooling inner wall and a cooling outer wall, and the cooling inner wall and the cooling outer wall form an annular cooling cavity;
the urea solution spraying device comprises a nozzle assembly (1) used for spraying urea solution, wherein the nozzle assembly (1) comprises a spraying part and a sealing part, the sealing part comprises an annular sealing sleeve (10), one end of the spraying part is arranged in the annular cooling water jacket (2) in a penetrating mode, the middle section of the spraying part is arranged in a mode that the annular sealing sleeve (10) is abutted to the cooling inner wall, and the other end of the spraying part extends out of the annular cooling water jacket (2);
the installation assembly comprises a top cover (4), a clamping sleeve (5) and an installation seat (3), wherein the top cover (4) is abutted against the other end of the injection part and is connected with the annular cooling water jacket (2) through the clamping sleeve (5), the installation seat (3) is of an annular structure, the annular cooling water jacket (2) is inserted into the installation seat (3), and the urea metering injection device is connected with an exhaust pipeline through the installation seat (3).
2. The urea metering and injecting device of claim 1, wherein the cross section of the annular sealing sleeve (10) perpendicular to the axial direction is concave, the injection part is provided with a step surface, one end of the injection part is inserted into the annular sealing sleeve (10), the end surface of the annular sealing sleeve (10) abuts against the step surface, and the outer wall surface of the annular sealing sleeve (10) abuts against the cooling inner wall.
3. The urea metering and injecting device of claim 1, wherein the mounting assembly further comprises a hoop flange, the outer wall of the mounting seat (3) is provided with a mounting step (31), the hoop flange can be used for fixing the mounting seat (3) and the exhaust duct, and the hoop flange can be arranged to abut against the mounting step (31).
4. A urea dosing device according to claim 1, characterized in that said mounting assembly further comprises a sealing gasket (11), said sealing gasket (11) being able to be interposed between said mounting seat (3) and said exhaust duct.
5. The urea metering and injecting device according to claim 1, wherein the sealing portion further comprises a sealing ring (9), and the sealing ring (9) is interposed between the other end of the injecting portion and the top cover (4).
6. The urea metering and injecting device according to the claim 1, characterized in that the cutting sleeve (5) is connected with the annular cooling water jacket (2) in a threaded manner, and the top cover (4) is connected with the cutting sleeve (5) in a welding manner.
7. A urea metering and injecting device as claimed in claim 1, wherein a urea inlet joint (7) is arranged on the top cover (4), and the urea inlet joint (7) is communicated with the injecting part.
8. A urea dosing device according to claim 1, characterized in that the nozzle assembly (1) further comprises a harness plug (8), said harness plug (8) being electrically connected to the injection portion.
9. A urea dosing device according to claim 1, characterized in that said cooling assembly further comprises a cooling liquid connection (6), said cooling liquid connection (6) being interposed in said cooling outer wall, said cooling liquid connection (6) comprising an inlet cooling liquid connection and an outlet cooling liquid connection able to communicate with said annular cooling chamber.
10. The urea metering and injecting device according to claim 9, characterized in that the coolant connection (6) is welded to the annular cooling jacket (2); or
The cooling liquid joint (6) is connected with the annular cooling water jacket (2) in an inserting manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111313578.9A CN114060126B (en) | 2021-11-08 | 2021-11-08 | Urea metering and spraying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111313578.9A CN114060126B (en) | 2021-11-08 | 2021-11-08 | Urea metering and spraying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114060126A true CN114060126A (en) | 2022-02-18 |
| CN114060126B CN114060126B (en) | 2024-06-21 |
Family
ID=80274691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111313578.9A Active CN114060126B (en) | 2021-11-08 | 2021-11-08 | Urea metering and spraying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114060126B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004044172A1 (en) * | 2003-09-23 | 2005-04-14 | Ge Jenbacher Gmbh & Co Ohg | Internal combustion engine has exhaust manifold with region that is cooled by cooling device and region that is essentially uncooled; cooled region is at end of manifold upstream of turbocharger |
| CA2582848A1 (en) * | 2006-03-29 | 2007-09-29 | Honda Motor Co., Ltd. | Water-cooled internal combustion engine |
| CN204402628U (en) * | 2014-10-22 | 2015-06-17 | 张家口百通环保科技有限公司 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
| CN104948277A (en) * | 2015-06-30 | 2015-09-30 | 苏州派格丽减排系统有限公司 | Water cooling nozzle without air pump |
| CN206129370U (en) * | 2016-09-14 | 2017-04-26 | 无锡威孚高科技集团股份有限公司 | Nozzle coolant jacket structure |
| CN107701271A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of metering injector of the spliced cooling jacket of band |
| CN213116434U (en) * | 2020-04-25 | 2021-05-04 | 福爱电子(贵州)有限公司 | Novel post-treatment nozzle cooling device |
| CN217107164U (en) * | 2021-11-08 | 2022-08-02 | 凯龙高科技股份有限公司 | Urea metering and spraying device |
-
2021
- 2021-11-08 CN CN202111313578.9A patent/CN114060126B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004044172A1 (en) * | 2003-09-23 | 2005-04-14 | Ge Jenbacher Gmbh & Co Ohg | Internal combustion engine has exhaust manifold with region that is cooled by cooling device and region that is essentially uncooled; cooled region is at end of manifold upstream of turbocharger |
| CA2582848A1 (en) * | 2006-03-29 | 2007-09-29 | Honda Motor Co., Ltd. | Water-cooled internal combustion engine |
| CN204402628U (en) * | 2014-10-22 | 2015-06-17 | 张家口百通环保科技有限公司 | A kind of circulating water cooling type urea injection device for SCR exhaust gas aftertreatment system |
| CN104948277A (en) * | 2015-06-30 | 2015-09-30 | 苏州派格丽减排系统有限公司 | Water cooling nozzle without air pump |
| CN206129370U (en) * | 2016-09-14 | 2017-04-26 | 无锡威孚高科技集团股份有限公司 | Nozzle coolant jacket structure |
| CN107701271A (en) * | 2017-10-31 | 2018-02-16 | 凯龙高科技股份有限公司 | A kind of metering injector of the spliced cooling jacket of band |
| CN213116434U (en) * | 2020-04-25 | 2021-05-04 | 福爱电子(贵州)有限公司 | Novel post-treatment nozzle cooling device |
| CN217107164U (en) * | 2021-11-08 | 2022-08-02 | 凯龙高科技股份有限公司 | Urea metering and spraying device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114060126B (en) | 2024-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2538048B1 (en) | Reductant delivery unit for selective catalytic reduction | |
| US8261537B2 (en) | Mounting device for an injector in an exhaust system of an internal combustion engine | |
| KR101502498B1 (en) | Retrofit injector mount | |
| US8191356B2 (en) | Liquid injector assembly with a flanged connector connection | |
| US9598994B2 (en) | Cooling device for connection piece | |
| US9777859B2 (en) | Purging and sealing-reductant delivery unit for selective catalytic reduction systems | |
| US9488292B2 (en) | Device for cooling a metering valve | |
| US20140314644A1 (en) | Reductant delivery unit for automotive selective catalytic reduction with reducing agent heating | |
| US20150059322A1 (en) | Liquid cooled reductant delivery unit for automotive selective catalytic reduction systems | |
| CN104937226A (en) | Reductant delivery unit for automotive selective catalytic reduction systems - active cooling | |
| KR101619681B1 (en) | Delivery unit for delivering a liquid additive | |
| CN217107164U (en) | Urea metering and spraying device | |
| US9587542B2 (en) | Metering module with high-temperature resistance | |
| KR102176794B1 (en) | Heat shield and gasket for reductant delivery unit | |
| US10753252B2 (en) | Thermally isolated reductant dosing unit with hermetic seal | |
| US9261000B2 (en) | Device for exhaust-gas aftertreatment having a dosing unit for an exhaust-gas aftertreatment agent and motor vehicle having the device | |
| CN114060126A (en) | Urea metering and spraying device | |
| CN213116434U (en) | Novel post-treatment nozzle cooling device | |
| CN223434406U (en) | Urea metering and spraying device | |
| CN114135368A (en) | Urea metering and spraying device | |
| US20210131327A1 (en) | Dosing module for use in aftertreatment systems for internal combustion engines | |
| EP3500741B1 (en) | Reductant dosing unit compact side feed inlet port | |
| WO2024006240A1 (en) | Doser mount for exhaust aftertreatment system | |
| WO2023239748A1 (en) | Doser assembly with sensor assembly | |
| CN120701442A (en) | Overvoltage protection device for aftertreatment injection system |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |