CN112752898A - Nozzle mounting assembly and aftertreatment system - Google Patents
Nozzle mounting assembly and aftertreatment system Download PDFInfo
- Publication number
- CN112752898A CN112752898A CN201880094806.8A CN201880094806A CN112752898A CN 112752898 A CN112752898 A CN 112752898A CN 201880094806 A CN201880094806 A CN 201880094806A CN 112752898 A CN112752898 A CN 112752898A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- mounting assembly
- heat
- aftertreatment
- hole
- 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
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 ; Methods of operation or control of catalytic converters
-
- 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
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)
- Exhaust Silencers (AREA)
Abstract
A nozzle mounting assembly comprises a nozzle seat (4), wherein a nozzle through hole used for sealing and penetrating through a spray hole end of a urea nozzle (3) is formed in the nozzle seat (4), the nozzle mounting assembly also comprises a heat insulation cover (2) used for being connected to a shell of an aftertreatment box body (1) in an embedded mode, the heat insulation cover (2) is composed of at least two layers of heat insulation plates, a heat insulation gap exists between every two adjacent layers of heat insulation plates, the nozzle seat (4) is mounted on the heat insulation cover (2) in a sealing mode, and the nozzle through hole is communicated with the interior of the aftertreatment box body (1); an aftertreatment system is also disclosed. The nozzle mounting assembly and the aftertreatment system enable heat of exhaust airflow in the aftertreatment box to be blocked by the heat insulation cover, heat radiation is reduced and transmitted to the nozzle, and therefore the nozzle is prevented from being deformed and damaged due to high temperature in the using process.
Description
The invention relates to the technical field of engine tail gas treatment, in particular to a nozzle mounting assembly. The invention also relates to an aftertreatment system including the nozzle mounting assembly.
With the stricter and stricter emission standards of national diesel vehicle tail gas pollutants, in order to meet the emission standards of Euro VI and China VI, the particulate matters and NO in the exhaust pollutants need to be treatedXThe contents of (nitrogen oxides), HC (hydrocarbons), and CO (carbon monoxide) are controlled, and therefore, DOC (oxidation catalytic converter) in the aftertreatment system is required to convert CO (carbon monoxide) and HC (hydrocarbons) in the engine exhaust gas into harmless water (H)2O) and carbon dioxide (CO)2) The exhaust gas treatment method comprises the steps of collecting particles in exhaust gas through a DPF (particle trap) in an aftertreatment system, effectively reducing PM2.5 and other emission pollutants in the exhaust gas, and hydrolyzing NH (NH) generated by urea through an SCR (selective catalytic reduction converter) in the aftertreatment system3(Ammonia gas) under the action of catalyst to remove NO from waste gasx(Nitrogen oxide) conversion to N2(nitrogen gas), wherein urea is injected into the SCR through a urea nozzle.
An installation structure of a conventional urea nozzle in an aftertreatment system is shown in fig. 1, wherein the urea nozzle is fixed on a nozzle holder through a bolt, the nozzle holder is welded with an aftertreatment box body, and a spray hole of the urea nozzle sprays urea into the aftertreatment box body through an opening formed in the nozzle holder. Because the casing of the aftertreatment box body around the nozzle seat has poor heat insulation performance, the heat of the exhaust airflow in the aftertreatment box body is more transferred to the nozzle on the casing at the position through heat radiation, so that the nozzle is deformed and damaged after being subjected to high temperature and cannot work normally.
In summary, how to solve the problem that the nozzle is prone to high temperature deformation and damage becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
Accordingly, the present invention is directed to a nozzle mounting assembly to prevent the nozzle from being deformed and damaged by high temperature during use.
It is another object of the present invention to provide an aftertreatment system incorporating the nozzle mounting assembly to avoid deformation damage to the nozzle from high temperatures during use.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a nozzle installation component, includes the nozzle holder, offer the nozzle through-hole that is used for the sealed spout hole end that passes the urea nozzle on the nozzle holder, still including being used for embedded connection in the thermal-insulated cover of aftertreatment box's casing, it comprises at least two-layer heat insulating board to separate the thermal-insulated cover, and every adjacent two-layer exist thermal-insulated clearance between the heat insulating board, nozzle holder seal installation is in separate on the thermal-insulated cover, just the nozzle through-hole with the inside intercommunication of aftertreatment box.
Preferably, in the nozzle mounting assembly, the nozzle holder is disposed in the heat insulation gap, and the nozzle holder is fixed to the heat insulation plate.
Preferably, in the nozzle mounting assembly, the nozzle holder is provided with a fixing hole, and the mounting hole of the urea nozzle is fixedly connected with the fixing hole through a fixing member.
Preferably, in the nozzle mounting assembly, the nozzle holder is fixed to a layer of the heat insulation plate close to the interior of the aftertreatment box, a concave pit recessed into the interior of the aftertreatment box is formed in a position of the heat insulation plate corresponding to the fixing member, and a gap is formed between the concave pit and the fixing member.
Preferably, in the nozzle mounting assembly, the nozzle holder is fixed to the heat shield in a sealing and inserting manner, a fixing hole holder is further disposed on a layer of heat insulation plate of the heat shield, which is far away from the aftertreatment box body, the fixing hole holder is provided with a fixing hole, and the mounting hole of the urea nozzle is fixedly connected with the fixing hole through a fixing member.
Preferably, in the above nozzle mounting assembly, the fixing hole is a threaded hole, and the fixing member is a threaded connector.
Preferably, in the nozzle mounting assembly, the number of the fixing holes is 1 to 6.
Preferably, in the above nozzle mounting assembly, the number of the heat insulation plates of the heat shield is two, and the two heat insulation plates are an upper heat insulation plate and a lower heat insulation plate.
Preferably, in the nozzle mounting assembly, a thermal insulation material is filled between every two adjacent layers of the thermal insulation boards.
Preferably, in the nozzle mounting assembly described above, the heat insulating material is heat insulating cotton, a heat insulating vacuum panel, or a heat reflecting material.
Preferably, in the nozzle mounting assembly, the heat insulation wool is made of glass fiber, asbestos, rock wool or silicate.
Preferably, in the above nozzle mounting assembly, a surface of the fixing member is coated with a sintering inhibitor.
Preferably, in the nozzle mounting assembly, the heat shield is a concave heat shield recessed in the casing of the aftertreatment tank, and the urea nozzle part or the whole urea nozzle part is accommodated in the concave portion of the concave heat shield.
The invention also provides an aftertreatment system comprising an aftertreatment tank and a urea nozzle arranged on a housing of the aftertreatment tank by a nozzle mounting assembly as described in any one of the above.
Compared with the prior art, the invention has the beneficial effects that:
the nozzle mounting assembly provided by the invention comprises a heat shield and a nozzle seat, wherein the heat shield consists of at least two layers of heat insulation plates, a heat insulation gap is formed between every two adjacent layers of heat insulation plates, the heat shield is embedded in a shell of the aftertreatment box body, the nozzle seat is hermetically mounted on the heat shield, a nozzle through hole of the nozzle seat is communicated with the interior of the aftertreatment box body, and a spray hole end of a urea nozzle penetrates through the nozzle through hole in a sealing manner and is used for spraying urea into the aftertreatment box body. Because the nozzle seat is not directly welded and fixed on the single-layer shell of the post-treatment box body, but is arranged on the heat insulation cover, the heat insulation cover is provided with at least two layers of heat insulation plates, and a gap is reserved between the heat insulation plates, therefore, the heat of the exhaust airflow in the post-treatment box body is separated by the heat insulation cover, the heat radiation is reduced and is transferred to the nozzle, and the nozzle is prevented from being deformed and damaged by high temperature in the using process.
The post-processing system provided by the invention adopts the nozzle mounting assembly, and the urea nozzle is arranged on the shell of the post-processing box body through the nozzle mounting assembly, so that the heat insulation performance around the nozzle is improved, and the nozzle is prevented from being deformed and damaged by high temperature in the using process.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a prior art urea nozzle mounting arrangement;
FIG. 2 is a schematic structural view of a nozzle mounting assembly according to an embodiment of the present invention;
FIG. 3 is an exploded view of the nozzle mounting assembly of FIG. 2;
FIG. 4 is a schematic structural view of another nozzle mounting assembly provided in accordance with an embodiment of the present invention;
fig. 5 is an exploded view of the nozzle mounting assembly of fig. 4.
Wherein, 01 is a post-treatment box body, 02 is a nozzle seat, 03 is a urea nozzle, and 04 is a bolt;
1 is a post-treatment box body, 2 is a heat shield, 21 is an upper heat insulation plate, 22 is a heat insulation material, 23 is a lower heat insulation plate, 3 is a urea nozzle, 4 is a nozzle seat, 41 is a nozzle through hole, 42 is a fixing hole, 5 is a fixing piece, and 6 is a fixing hole seat.
The core of the invention is to provide a nozzle mounting assembly, which avoids the deformation and damage of the nozzle caused by high temperature in the use process.
The invention also provides an aftertreatment system comprising the nozzle mounting assembly, which avoids deformation and damage of the nozzle caused by high temperature in the using process.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2 to 5, an embodiment of the present invention provides a nozzle mounting assembly, including a nozzle holder 4 and a heat shield 2, wherein the nozzle holder 4 is provided with a nozzle through hole 41 for sealing a nozzle end penetrating through a urea nozzle 3, the heat shield 2 is used for being embedded and connected in a casing of an aftertreatment box 1, the heat shield 2 is composed of at least two layers of heat insulation boards, a heat insulation gap exists between each two adjacent layers of heat insulation boards, the number of the heat insulation boards may be two, three, four, and more layers, and when the two layers are provided, the heat insulation boards are an upper heat insulation board 23 and a lower heat insulation board 21, for convenience of description, the following two layers are taken as an example, and of course, other numbers of heat insulation boards are also applicable to the situations described in the following embodiments; the nozzle holder 4 is hermetically mounted on the heat shield 2, and an opening for mounting the urea nozzle 3 and communicating with the inside of the casing of the aftertreatment case 1 is opened on the heat shield 2, and the nozzle through hole 41 of the nozzle holder 4 communicates with the inside of the aftertreatment case 1.
Because the nozzle holder 4 is not directly welded and fixed on the single-layer shell of the post-treatment box body 1, but is installed on the heat insulation cover 2, the heat insulation cover 2 is fixed on the shell of the post-treatment box body 1, the heat insulation cover 2 is provided with at least two layers of heat insulation plates, and gaps are arranged between the heat insulation plates, therefore, the heat of the exhaust airflow in the post-treatment box body 1 is separated by the heat insulation cover 2, the heat radiation is reduced and is transmitted to the urea nozzle 3, and the urea nozzle 3 is prevented from being deformed and damaged by high temperature in the using process.
As shown in fig. 2 and 3, the present embodiment provides a specific nozzle holder 4 mounting structure, the nozzle holder 4 is disposed in the heat insulation gap, and the nozzle holder 4 is fixed to the heat insulation plate. Because the nozzle holder 4 is arranged in the heat insulation gap between the two heat insulation plates, the opening on the layer of heat insulation plate close to the interior of the aftertreatment box body 1 can only expose the nozzle through hole 41 of the nozzle holder 4, so that the area of direct contact between the nozzle holder 4 and exhaust airflow is further reduced, heat is directly transmitted to the nozzle holder 4, and the heat is further reduced and transmitted to the urea nozzle 3 through the nozzle holder 4.
As shown in fig. 2 and 3, the nozzle holder 4 is provided with a fixing hole 42, and the mounting hole of the urea nozzle 3 is fixedly connected to the fixing hole 42 by a fixing member 5, so that the urea nozzle 3 is fixed to the nozzle holder 4 and the urea nozzle 3 is fixed. Preferably, the fixing holes 42 are unthreaded or threaded holes, and the fixing members 5 are threaded connectors such as bolts, studs, screws, or the like. When the fixing hole 42 is a threaded hole, the fixing member 5 is a bolt or a screw, and when the fixing hole 42 is a smooth hole, the fixing member 5 is a stud fixed to a nut by a thread at an end portion. Of course, the fixing hole 42 and the fixing member 5 may be a press-interference fit structure. The quantity of mounting 5 and fixed orifices 42 equals, and can be 1 ~ 6, and when being a plurality of, fixed orifices 42 improves fixed stability along the circumference evenly distributed of nozzle holder 4.
As shown in fig. 2 and 3, when the nozzle holder 4 is fixed to a layer of heat insulating board near the inside of the aftertreatment case 1, which is shown as a lower heat insulating board 21 in fig. 2, a recess 211 recessed toward the inside of the aftertreatment case 1 is provided at a position of the lower heat insulating board 21 corresponding to the fixing member 5, a gap exists between the recess 211 and the fixing member 5, and the fixing member 5 does not contact the lower heat insulating board 21. Because the nozzle holder 4 is fixed on the lower heat insulation plate 21, and is close to the heat source, the heat can be directly transmitted to the fixing member 5 through the lower heat insulation plate 21, and then transmitted to the urea nozzle 3 through the fixing member 5, therefore, the lower heat insulation plate 21 is prevented from contacting with the fixing member 5 by arranging a gap between the lower heat insulation plate 21 and the corresponding fixing member 5, and the heat transmission is further reduced.
Of course, when the nozzle holders 4 are positioned at the heat-insulating gap and fixed to a layer of heat-insulating panel, which is distant from the inside of the aftertreatment housing 1, shown as the upper heat-insulating panel 23 in fig. 2, the nozzle holders 4 are not in direct contact with the heat source, and therefore, the fixing members 5 are not in contact with the lower heat-insulating panel 21, thereby further improving the heat-insulating effect. So long as sealing between the nozzle holder 4 and the lower heat insulation plate 21 is ensured.
As shown in fig. 4 and 5, the embodiment provides another installation structure of a nozzle holder 4, the nozzle holder 4 is fixed on the heat shield 2 in a sealing and penetrating manner, that is, the nozzle holder 4 is a step holder, the upper end and the lower end of the nozzle holder 4 respectively penetrate out of the upper heat insulation plate 23 and the lower heat insulation plate 21, and the periphery of the nozzle holder 4 is connected with the heat shield 2 in a sealing manner, on one layer of heat insulation plate of the heat shield 2 far away from the post-treatment box 1, that is, the upper heat insulation plate 23 is further provided with a fixing hole holder 6, the fixing hole holder 6 is provided with a fixing hole 42, the installation hole and the fixing hole 42 of the urea nozzle 3 are fixedly connected through a fixing member 5, so as to fix the urea nozzle 3 on the heat shield.
Compared to the nozzle holder 4 shown in fig. 2 and 3, the nozzle holder 4 in the present embodiment is separately provided from the fixed orifice holder 6 having the fixed orifices 42, and therefore, the area of the nozzle holder 4 in direct contact with the exhaust gas flow can be further reduced, and the heat transfer can be further reduced. And the fixing socket 6 is fixed to the upper heat insulation plate 23 to keep the fixing member 5 away from the heat source, thereby further reducing the transfer of heat.
Preferably, the fixing hole 42 on the fixing hole seat 6 is a smooth hole or a threaded hole, and the fixing member 5 is a threaded connecting member, such as a bolt, a stud or a screw. When the fixing hole 42 is a threaded hole, the fixing member 5 is a bolt or a screw, and when the fixing hole 42 is a smooth hole, the fixing member 5 is a stud fixed to a nut by a thread at an end portion. Of course, the fixing hole 42 and the fixing member 5 may be a press-interference fit structure. The quantity of mounting 5 and fixed orifices 42 equals, and can be 1 ~ 6, and when being a plurality of, fixed orifices seat 6 improves fixed stability along the circumference evenly distributed of nozzle holder 4.
As shown in fig. 2 to 5, in order to further improve the heat insulation effect, in addition to the above embodiments, the heat insulation material 22 is filled between every two adjacent layers of heat insulation boards, for example, the heat insulation material 22 is filled between the upper heat insulation board 23 and the lower heat insulation board 21, and the heat insulation effect of the heat insulation material 22 is better than that of a simple heat insulation gap, thereby further improving the heat insulation effect. The heat insulating material 22 is filled in all the remaining heat insulating gaps except for the opening for the fixture 5 to pass through and the opening for the urea nozzle 3 to be assembled, which are necessary in the heat insulating material 22, to maximize the heat insulating effect.
Preferably, the heat insulator 22 is heat-insulating cotton in the present embodiment, but the heat insulator 22 may be a heat-insulating vacuum panel or a heat reflecting material. The preferred glass fiber material that adopts of thermal-insulated cotton, it is effectual to insulate against heat, except adopting the glass fiber material, thermal-insulated cotton still can be asbestos, rock wool, silicate etc. as long as can play thermal-insulated effect can.
In this embodiment, in order to prevent the fixing member 5 (e.g., bolt, screw, etc.) from being sintered and thus cannot be disassembled after the aftertreatment system is used for a long time, the surface of the fixing member 5 is coated with the anti-sintering agent, and the anti-sintering agent is coated at each installation.
As shown in fig. 2-5, in the present embodiment, the heat shield 2 is a concave heat shield recessed in the casing of the aftertreatment casing 1, that is, the heat shield 2 is entirely recessed in the outer surface of the casing of the aftertreatment casing 1, so that the urea nozzle 3 is partially or entirely accommodated in the concave heat shield, specifically, the main valve body and the nozzle seat 4 of the urea nozzle 3 are more recessed into the outer surface of the aftertreatment casing 1, and the height of the urea nozzle 3 protruding out of the aftertreatment casing 1 is less than the height of other accessories (such as a bracket, a wiring harness, etc.) on the casing; the urea nozzle 3 does not restrict the installation of the post-treatment system, so that the structure of the post-treatment system is more compact, the occupied space is reduced, the space arrangement is convenient, and the matched vehicle types can be effectively increased.
Based on the nozzle mounting assembly described in any of the above embodiments, the embodiment of the invention also provides an aftertreatment system, which comprises an aftertreatment box body 1 and a urea nozzle 3, wherein the urea nozzle 3 is arranged on the shell of the aftertreatment box body 1 through the nozzle mounting assembly described in any of the above embodiments. The heat insulation performance around the urea nozzle 3 is improved, and therefore, the urea nozzle 3 is prevented from being deformed and damaged by high temperature in the use process.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
- The utility model provides a nozzle installation component, includes nozzle holder (4), offer on nozzle holder (4) and be used for the sealed nozzle through-hole (41) that pass the spout hole end of urea nozzle (3), its characterized in that still includes and is used for embedded connection in the thermal shield (2) of the casing of aftertreatment box (1), thermal shield (2) comprise at least two-layer heat insulating board, and every adjacent two-layer there is thermal-insulated clearance between the heat insulating board, nozzle holder (4) seal installation be in on thermal shield (2), just the nozzle through-hole with the inside intercommunication of aftertreatment box (1).
- The nozzle mounting assembly of claim 1, wherein the nozzle holder (4) is disposed in the insulating gap and the nozzle holder (4) is secured to the insulating plate.
- The nozzle mounting assembly of claim 2, wherein the nozzle holder (4) is provided with a fixing hole (42), and the mounting hole of the urea nozzle (3) is fixedly connected with the fixing hole (42) through a fixing member (5).
- The nozzle mounting assembly according to claim 3, wherein the nozzle holder (4) is fixed to a layer of the heat insulating plate adjacent to the interior of the aftertreatment housing (1), and a recess (211) recessed toward the interior of the aftertreatment housing (1) is provided at a position of the heat insulating plate corresponding to the fixing member (5), and a gap is provided between the recess (211) and the fixing member (5).
- The nozzle mounting assembly of claim 1, wherein the nozzle holder (4) is fixed on the heat shield (2) in a sealing and penetrating manner, a layer of heat insulation plate of the heat shield (2) far away from the aftertreatment box body (1) is further provided with a fixing hole holder (6), the fixing hole holder (6) is provided with a fixing hole (42), and the mounting hole of the urea nozzle (3) is fixedly connected with the fixing hole (42) through the fixing piece (5).
- A nozzle mounting assembly according to any of claims 2-5, wherein the fixing hole (42) is a threaded or unthreaded hole and the fixing member (5) is a threaded connection.
- A nozzle mounting assembly according to any one of claims 2-5, wherein the number of fixing holes (42) is 1-6.
- Nozzle mounting assembly according to any of claims 1-5, characterized in that the number of heat shields of the heat shield (2) is two, an upper heat shield (23) and a lower heat shield (21), respectively.
- A nozzle mounting assembly according to any one of claims 1 to 5, wherein between each two adjacent layers of said insulation panels there is further filled insulation material (22).
- The nozzle mounting assembly of claim 9, wherein the thermal insulation material (22) is thermal insulation wool, thermal insulation vacuum panels, or heat reflective material.
- The nozzle mounting assembly of claim 10, wherein the thermal insulation wool is fiberglass, asbestos, rock wool, or silicate.
- A nozzle mounting assembly according to any of claims 1-5, wherein the surface of the fixture (5) is coated with a burn inhibitor.
- Nozzle mounting assembly according to any of claims 1-5, wherein the heat shield (2) is a concave heat shield recessed in the housing of the aftertreatment tank (1), the urea nozzle (3) being partly or fully accommodated in a recess of the concave heat shield.
- An aftertreatment system comprising an aftertreatment tank (1) and a urea nozzle (3), wherein the urea nozzle (3) is arranged on a housing of the aftertreatment tank (1) by means of a nozzle mounting assembly according to any one of claims 1-13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/108939 WO2020062206A1 (en) | 2018-09-30 | 2018-09-30 | Nozzle mounting assembly and post-treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112752898A true CN112752898A (en) | 2021-05-04 |
Family
ID=69952728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880094806.8A Pending CN112752898A (en) | 2018-09-30 | 2018-09-30 | Nozzle mounting assembly and aftertreatment system |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN112752898A (en) |
| MX (1) | MX2021001593A (en) |
| UA (1) | UA127461C2 (en) |
| WO (1) | WO2020062206A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105237A1 (en) * | 2006-11-03 | 2008-05-08 | Pratt & Whitney Canada Corp. | Fuel nozzle flange with reduced heat transfer |
| CN101796274A (en) * | 2007-09-04 | 2010-08-04 | 日野自动车株式会社 | Injector mounting structure |
| US20130164181A1 (en) * | 2011-12-27 | 2013-06-27 | Tadashi Iijima | Reducing agent aqueous solution mixing device and exhaust gas post-treatment device |
| CN104066942A (en) * | 2013-01-17 | 2014-09-24 | 株式会社小松制作所 | Reducing agent aqueous solution mixing device and exhaust gas aftertreatment device provided with same |
| US20150135683A1 (en) * | 2012-06-01 | 2015-05-21 | Daimler Ag | System for Adding and Processing Reducing Agent in a Motor Vehicle |
| CN106194343A (en) * | 2015-05-26 | 2016-12-07 | 神钢建机株式会社 | Reducing agent injector pad and exhaust aftertreatment device |
| JP2017044074A (en) * | 2015-08-24 | 2017-03-02 | 株式会社日本自動車部品総合研究所 | Heat insulation member |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101767284B1 (en) * | 2010-02-10 | 2017-08-23 | 테네코 오토모티브 오퍼레이팅 컴파니 인코포레이티드 | Pressure swirl flow injector with reduced flow variability and return flow |
| CN101988412A (en) * | 2010-11-12 | 2011-03-23 | 无锡市凯龙汽车设备制造有限公司 | SCR (selective catalyst reduction) injector head of diesel engine |
| CN201874647U (en) * | 2010-11-12 | 2011-06-22 | 无锡市凯龙汽车设备制造有限公司 | SCR (selective catalyst reduction) injecting head of diesel engine |
| CN203347897U (en) * | 2013-06-18 | 2013-12-18 | 潍柴动力股份有限公司 | SCR urea nozzle |
| CN205400862U (en) * | 2016-02-22 | 2016-07-27 | 天纳克（苏州）排放系统有限公司 | Nozzle assembly |
-
2018
- 2018-09-30 WO PCT/CN2018/108939 patent/WO2020062206A1/en active Application Filing
- 2018-09-30 UA UAA202100756A patent/UA127461C2/en unknown
- 2018-09-30 CN CN201880094806.8A patent/CN112752898A/en active Pending
- 2018-09-30 MX MX2021001593A patent/MX2021001593A/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080105237A1 (en) * | 2006-11-03 | 2008-05-08 | Pratt & Whitney Canada Corp. | Fuel nozzle flange with reduced heat transfer |
| CN101796274A (en) * | 2007-09-04 | 2010-08-04 | 日野自动车株式会社 | Injector mounting structure |
| US20130164181A1 (en) * | 2011-12-27 | 2013-06-27 | Tadashi Iijima | Reducing agent aqueous solution mixing device and exhaust gas post-treatment device |
| US20150135683A1 (en) * | 2012-06-01 | 2015-05-21 | Daimler Ag | System for Adding and Processing Reducing Agent in a Motor Vehicle |
| CN104066942A (en) * | 2013-01-17 | 2014-09-24 | 株式会社小松制作所 | Reducing agent aqueous solution mixing device and exhaust gas aftertreatment device provided with same |
| CN106194343A (en) * | 2015-05-26 | 2016-12-07 | 神钢建机株式会社 | Reducing agent injector pad and exhaust aftertreatment device |
| JP2017044074A (en) * | 2015-08-24 | 2017-03-02 | 株式会社日本自動車部品総合研究所 | Heat insulation member |
Also Published As
| Publication number | Publication date |
|---|---|
| MX2021001593A (en) | 2021-05-12 |
| UA127461C2 (en) | 2023-08-30 |
| WO2020062206A1 (en) | 2020-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2184455B1 (en) | Injector mounting structure | |
| CN107780998B (en) | Universal integrated DOC-DPF-SCR post-treatment device | |
| JP6345628B2 (en) | Gasket for reducing agent injector and exhaust gas aftertreatment device having the same | |
| US11143622B2 (en) | Vibrating structure, bubble removing structure, and ultrasonic liquid concentration detecting device | |
| CN112031909A (en) | Tail gas aftertreatment encapsulation | |
| KR20190108681A (en) | Selective catalytic reduction system for in-use vehicles | |
| CN112752898A (en) | Nozzle mounting assembly and aftertreatment system | |
| CN201714465U (en) | Reduction catalyst | |
| CN215057688U (en) | Tail gas aftertreatment assembly device of harvester | |
| US10508584B2 (en) | Use of insulating paint on exhaust aftertreatment system components | |
| RU2773765C1 (en) | Nozzle installation assembly and post-treatment system | |
| CN213116434U (en) | Novel post-treatment nozzle cooling device | |
| CN217300721U (en) | Electric control exhaust throttle valve member | |
| CN210164519U (en) | Catalytic muffler | |
| CN208153107U (en) | A kind of SCR catalysis silencing apparatus | |
| CN212022316U (en) | Truck exhaust system arrangement structure and truck | |
| CN207934977U (en) | A kind of inlet end insulation construction of vehicle catalyst | |
| CN206582009U (en) | A kind of quaternary catalytic converter of annular distribution | |
| CN111550303A (en) | Thermal-insulated support of tail gas aftertreatment encapsulation | |
| CN219809061U (en) | End cone and hot end assembly of engine exhaust system | |
| CN214836647U (en) | DOC heater wire protection device | |
| CN217107170U (en) | SCR device and cylinder type post-processing device | |
| KR102557412B1 (en) | Vertical exhaust gas after treatment apparatus with improved mixing part for agricultural machine | |
| CN217602766U (en) | Post-processing tight coupling integrated packaging structure | |
| CN215890151U (en) | Commercial vehicle postprocessor |
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: 20210504 |
|
| RJ01 | Rejection of invention patent application after publication |