WO2017032231A1 - Exhaust gas treatment apparatus - Google Patents
Exhaust gas treatment apparatus Download PDFInfo
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- WO2017032231A1 WO2017032231A1 PCT/CN2016/095266 CN2016095266W WO2017032231A1 WO 2017032231 A1 WO2017032231 A1 WO 2017032231A1 CN 2016095266 W CN2016095266 W CN 2016095266W WO 2017032231 A1 WO2017032231 A1 WO 2017032231A1
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- mixing tube
- cavity
- partition
- exhaust gas
- treatment device
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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
- F01N3/24—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
Definitions
- the invention relates to an exhaust gas treatment device, and belongs to the technical field of engine exhaust aftertreatment.
- the uniformity of ammonia distribution in the exhaust aftertreatment system (eg, selective catalytic reduction system, SCR system) has an important impact on the overall performance and durability of the system. If the ammonia distribution is uneven, it will lead to excessive ammonia in the local area and easy to cause ammonia leakage, while in other thin ammonia regions, the nitrogen oxide (NOx) conversion efficiency is too low. Uneven distribution of ammonia over a long period of time can result in uneven aging of the catalyst, thereby affecting the overall performance of the catalyst. In addition, the uneven distribution of urea droplets may cause the local tube wall or mixed structure temperature to be too low to form crystallization, which may block the exhaust pipe when severe, resulting in a decrease in engine power performance.
- SCR system selective catalytic reduction system
- an exhaust treatment device including a casing, a plurality of partitions installed in the casing, and a mixing device located in the casing and supported by the partition And an exhaust gas treatment module located downstream of the mixing device, wherein the plurality of partitions include spaced apart first and second partitions, the housing including a first chamber upstream of the first partition a second cavity between the first partition and the second partition, and a third cavity downstream of the second partition, the second partition including the first a second cavity and at least one through hole of the third cavity, the mixing device comprising a mixing tube and a shroud cooperating with the mixing tube, wherein one end of the mixing tube comprises the first cavity a plurality of fins distributed in the body and circumferentially to form a swirl when the exhaust gas enters the mixing tube along the fin; the shroud is aligned with the other end of the mixing tube, the guide
- the flow cover includes an opening portion communicating with the second cavity, The opening direction of the opening direction of the opening
- the first partition is provided with a first opening for the mixing tube to pass through
- the second partition is provided with a second opening for the passage of the shroud a hole, the through hole being located outside the second opening.
- the housing is provided with an end plate parallel to the first partition, and the exhaust treatment device includes a urea nozzle for mounting on the end plate for The urea solution after atomization is sprayed into the mixing tube.
- the fin extends along a length direction of the mixing tube, and the mixing tube further includes a through hole closer to the end plate in the length direction, the through hole along The circumferential distribution of the mixing tube is used The exhaust gas is supplied into the mixing tube.
- the shroud has a bowl shape and includes a bottom portion protruding in the third cavity.
- the bottom portion has an arc shape, and the mixing tube extends beyond the second partition along a length thereof.
- the exhaust treatment device further includes a support plate located in the third cavity and configured to support the shroud upward.
- the support plate is parallel to the second partition and located downstream of the second partition, and the support plate is provided with a plurality of perforations.
- the exhaust treatment device includes a support frame installed in the shroud to support the mixing tube, and the support frame is provided with a positioning for the mixing tube to pass through. a hole and an air flow hole located at a periphery of the positioning hole for the swirling airflow to pass through.
- the shroud is sleeved at the other end of the mixing tube, and the mixing tube is at least partially inserted into the shroud.
- the present invention adjusts the flow direction of the airflow by setting a flow guide that is aligned with the mixing tube, increases the distance and time of evaporation of the urea, and improves the uniformity of airflow mixing.
- Figure 1 is a perspective view of an exhaust gas treatment device of the present invention.
- Figure 2 is a perspective perspective view of Figure 1.
- Figure 3 is a partial exploded perspective view of Figure 1.
- Figure 4 is an exploded perspective view of the first reactor of Figure 1.
- Figure 5 is a partially exploded perspective view of the mixing device of Figure 1.
- Figure 6 is a further exploded perspective view of Figure 5.
- Figure 7 is a side elevational view of the mixing tube of Figure 6.
- Figure 8 is a front elevational view of the mixing tube of Figure 6 with the swirling direction indicated.
- Figure 9 is a cross-sectional view showing the exhaust gas treatment apparatus of the present invention at an angle.
- the present invention discloses an exhaust treatment device 100 for treating exhaust gases of an engine, particularly a high power engine.
- the exhaust treatment device 100 includes a first reactor 1, a mixing structure 2, and a second reactor 3.
- the first reactor 1 is located upstream of the second reactor 3 in the flow direction of the exhaust gas.
- the first reactor 1 is an oxidation catalyst (DOC).
- the second reactor 3 includes an exhaust gas treatment module 31, which is selected in the illustrated embodiment of the invention Soxidative Catalytic Module (SCR).
- SCR Soxidative Catalytic Module
- the exhaust treatment device 100 of the present invention may also include a third reactor, such as an ammonia leak catalyst module (ASC).
- ASC ammonia leak catalyst module
- the first reactor 1 includes a casing 11, an intake pipe 12 at one end of the casing 11, an air outlet pipe 13 at the other end of the casing 11, and a plurality of partitions.
- the plate 14 is mounted on the oxidation catalyst module 15 in the housing 11.
- outlet pipe 13 of the first reactor 1 is connected to the mixing structure 2 by bolts 16.
- the hybrid structure 2 includes a housing 21, a plurality of partitions 22 mounted in the housing 21, and a mixing device 4 located within the housing 21 and supported by the partition 22.
- the exhaust gas treatment module 31 is also located within the housing 21 and downstream of the mixing device 4.
- the mixing device 4 includes a mixing tube 41 and a shroud 42 that cooperates with the mixing tube 41.
- the shroud 42 is aligned with the mixing tube 41 and sleeved around the periphery of the mixing tube 41.
- the housing 21 is provided with an end plate 210.
- the plurality of partitions 22 include a first partition 221 and a second partition 222 that are spaced apart.
- the housing 21 includes a first cavity 211 located upstream of the first partition 221, a second cavity 212 between the first partition 221 and the second partition 222, and a location The third cavity 213 downstream of the second partition 222 is described.
- the end plate 210 is parallel to the first partition 221, and the exhaust treatment device 100 includes a urea nozzle 23 for mounting on the end plate 210 for injecting the urea solution after atomization into the chamber.
- the inside of the mixing tube 41 is described.
- One end of the mixing tube 41 (left end in the embodiment shown in FIG. 9) includes a plurality of fins 411 located in the first cavity 211 and distributed in the circumferential direction for exhausting along the wings When the sheet 411 enters the mixing tube 41, a swirl can be formed.
- the fins 411 extend in the longitudinal direction of the mixing tube 41.
- the mixing tube 41 further includes a through hole 412 closer to the end plate 210 in the length direction, and the through hole 412 is distributed along the circumferential direction of the mixing tube 41 for exhaust gas to enter the mixing Inside the tube 41.
- the shroud 42 is sleeved at the other end of the mixing tube 41 (the right end in the embodiment shown in FIG. 9).
- the mixing tube 41 extends beyond the second partition 222 along its length.
- the mixing tube 41 is at least partially inserted into the shroud 42.
- the shroud 42 has a bowl shape, and includes an opening portion 421 facing the second cavity 212 and communicating with the second cavity 212, and protruding in the chamber
- the bottom 422 in the third cavity 213 is described.
- the opening direction of the opening portion 421 is opposite to the opening direction of the other end of the mixing tube 41 to change the flow direction of the airflow.
- the bottom portion 422 has an arc shape to better reflect the air flow.
- the exhaust treatment device 100 further includes a support plate 223 located in the third cavity 213 for supporting the shroud 42 upward.
- the support plate 223 is parallel to the second partition 222 and located downstream of the second partition 222.
- the support plate 223 is provided with a plurality of through holes 224 through which air flows.
- the exhaust treatment device 100 includes a support frame 43 mounted in the flow guide 42 for supporting the mixing tube 41.
- the support frame 43 is provided with a positioning hole 431 through which the mixing tube 41 passes.
- an air flow hole 432 located at the periphery of the positioning hole 431 for the swirling airflow to pass through.
- the first partition 221 is provided with a first opening 2211 through which the mixing tube 41 passes.
- the second partition 222 is provided with a second opening 2221 through which the shroud 42 passes.
- the second partition plate 222 includes a plurality of through holes 2222 communicating with the second cavity 212 and the third cavity 213 , and the through holes 2222 are located outside the second opening 2221 .
- the casing 21 is introduced from the outlet pipe 13. First, after the exhaust gas enters the first cavity 211, the exhaust gas passes through the fin 411 and the through hole 412, and forms a spiral airflow under the action of the fin 411, and then enters the mixing. Tube 41.
- the urea solution is atomized into the mixing tube 41 through the urea nozzle 23 at the end.
- the swirling gas stream encloses the urea solution, on the one hand increasing the uniformity of the mixing and on the other hand reducing the risk of crystallization due to contact of the urea solution with the tube wall.
- the air flow moves in the mixing tube 41 to the other side, into the shroud 42, and the flow direction of the air flow is changed by the shroud 42 to allow airflow into the second cavity 212. Subsequently, the gas stream enters the third cavity 213 through the through hole 2222 in the second separator 222, and flows out after being processed by the second reactor 3.
- the shroud 42 that is sleeved around the periphery of the mixing tube 41, the flow direction of the airflow is changed, the distance and time of evaporation of the urea are increased, and the uniformity of airflow mixing is improved.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
An exhaust gas treatment apparatus comprises a housing (21), several partition boards (22), a mixing apparatus (4) disposed in the housing (21), and a tail gas treatment module (31). The housing (21) comprises a first cavity (211), a second cavity (212), and a third cavity (213). The mixing apparatus (4) comprises a mixing tube (41) and a flow guiding cover (42) arranged on the periphery of the mixing tube (41) in a sleeving mode. One end of the mixing tube (41) comprises several fins (411) disposed in the first cavity and distributed in the circumferential direction, so that rotational flow can be formed when exhaust gas enters the mixing tube (41) along the fins (411). The flow guiding cover (42) is arranged at the other end of the mixing tube (41) in the sleeving mode, and at least part of the mixing tube (41) is inserted into the flow guiding cover (42). The flow guiding cover comprises an opening portion (421) communicated with the second cavity, and the opening direction of the opening portion (421) is opposite to the opening direction of the other end of the mixing tube (41), so as to change the gas flow direction. By means of the arrangement, evaporation distance and time of urea are increased, and the gas flow mixing uniformity is improved.
Description
本申请要求了申请日为2015年8月21日、申请号为201520637491.0、发明名称为“排气处理装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。Priority is claimed on Japanese Patent Application No. 2015-2063749, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in the the the the the the the the the
本发明涉及一种排气处理装置，属于发动机排气后处理技术领域。The invention relates to an exhaust gas treatment device, and belongs to the technical field of engine exhaust aftertreatment.
研究表明排气后处理***(例如选择性催化还原***，SCR***)管路中氨分布的均匀程度对***的整体性能和耐久性能有重要的影响。如果氨分布不均匀会导致局部区域氨过多从而易造成氨泄漏，而在另一些氨稀薄区域造成氮氧化合物(NOx)转化效率过低。长时间氨的不均匀分布会导致催化剂老化不均匀，从而影响催化剂的整体性能。另外，尿素液滴的不均匀分布会造成局部管壁或混合结构温度过低，形成结晶，严重时会堵塞排气管、导致发动机动力性能下降。Studies have shown that the uniformity of ammonia distribution in the exhaust aftertreatment system (eg, selective catalytic reduction system, SCR system) has an important impact on the overall performance and durability of the system. If the ammonia distribution is uneven, it will lead to excessive ammonia in the local area and easy to cause ammonia leakage, while in other thin ammonia regions, the nitrogen oxide (NOx) conversion efficiency is too low. Uneven distribution of ammonia over a long period of time can result in uneven aging of the catalyst, thereby affecting the overall performance of the catalyst. In addition, the uneven distribution of urea droplets may cause the local tube wall or mixed structure temperature to be too low to form crystallization, which may block the exhaust pipe when severe, resulting in a decrease in engine power performance.
因此，有必要提供一种新型的排气处理装置，以解决上述技术问题。Therefore, it is necessary to provide a novel exhaust gas treatment device to solve the above technical problems.
发明内容Summary of the invention
本发明的目的在于提供一种混合均匀的排气处理装置。It is an object of the present invention to provide a uniformly mixed exhaust gas treatment device.
为实现上述目的，本发明采用如下技术方案：一种排气处理装置，其包括壳体、安装于所述壳体内的若干隔板、位于所述壳体内且被所述隔板支撑的混合装置、以及位于所述混合装置下游的尾气处理模块，其中所述若干隔板包括间隔设置的第一隔板与第二隔板，所述壳体包括位于所述第一隔板上游的第一腔体、位于所述第一隔板与所述第二隔板之间的第二腔体、以及位于所述第二隔板下游的第三腔体，所述第二隔板包括连通所述第二腔体与所述第三腔体的至少一个通孔，所述混合装置包括混合管以及与所述混合管相配合的导流罩，其中所述混合管的一端包括位于所述第一腔体内且沿周向分布的若干翅片，用以当排气沿所述翅片进入所述混合管时能够形成旋流；所述导流罩与所述混合管的另一端对齐，所述导流罩包括与所述第二腔体连通的开口部，所述开口部的开口方向与所述混合管的所述另一端的开口方向相反以改变气流的流动方向。In order to achieve the above object, the present invention adopts the following technical solution: an exhaust treatment device including a casing, a plurality of partitions installed in the casing, and a mixing device located in the casing and supported by the partition And an exhaust gas treatment module located downstream of the mixing device, wherein the plurality of partitions include spaced apart first and second partitions, the housing including a first chamber upstream of the first partition a second cavity between the first partition and the second partition, and a third cavity downstream of the second partition, the second partition including the first a second cavity and at least one through hole of the third cavity, the mixing device comprising a mixing tube and a shroud cooperating with the mixing tube, wherein one end of the mixing tube comprises the first cavity a plurality of fins distributed in the body and circumferentially to form a swirl when the exhaust gas enters the mixing tube along the fin; the shroud is aligned with the other end of the mixing tube, the guide The flow cover includes an opening portion communicating with the second cavity, The opening direction of the opening direction of the opening of said other end of the mixing pipe opposite to change the air flow direction.
作为本发明进一步改进的技术方案，所述第一隔板设有供所述混合管穿过的第一开孔，所述第二隔板设有供所述导流罩穿过的第二开孔，所述通孔位于所述第二开孔的外部。As a further improved technical solution of the present invention, the first partition is provided with a first opening for the mixing tube to pass through, and the second partition is provided with a second opening for the passage of the shroud a hole, the through hole being located outside the second opening.
作为本发明进一步改进的技术方案，所述壳体设有平行于所述第一隔板的端板，所述排气处理装置包括用以安装在所述端板上的尿素喷嘴，用以将雾化之后的尿素溶液喷入所述混合管内。As a further improved technical solution of the present invention, the housing is provided with an end plate parallel to the first partition, and the exhaust treatment device includes a urea nozzle for mounting on the end plate for The urea solution after atomization is sprayed into the mixing tube.
作为本发明进一步改进的技术方案，所述翅片沿所述混合管的长度方向延伸，所述混合管还包括在所述长度方向上更靠近所述端板的通孔，所述通孔沿所述混合管的周向分布，用
以供排气进入所述混合管内。As a further improved technical solution of the present invention, the fin extends along a length direction of the mixing tube, and the mixing tube further includes a through hole closer to the end plate in the length direction, the through hole along The circumferential distribution of the mixing tube is used
The exhaust gas is supplied into the mixing tube.
作为本发明进一步改进的技术方案，所述导流罩呈碗状，其包括凸伸在所述第三腔体内的底部。As a further improvement of the technical solution of the present invention, the shroud has a bowl shape and includes a bottom portion protruding in the third cavity.
作为本发明进一步改进的技术方案，所述底部呈圆弧状，所述混合管沿其长度方向延伸超过所述第二隔板。As a further improved technical solution of the present invention, the bottom portion has an arc shape, and the mixing tube extends beyond the second partition along a length thereof.
作为本发明进一步改进的技术方案，所述排气处理装置还包括位于所述第三腔体内且用以向上支撑所述导流罩的支撑板。As a further improved technical solution of the present invention, the exhaust treatment device further includes a support plate located in the third cavity and configured to support the shroud upward.
作为本发明进一步改进的技术方案，所述支撑板平行于所述第二隔板且位于所述第二隔板的下游，所述支撑板设有若干穿孔。As a further improved technical solution of the present invention, the support plate is parallel to the second partition and located downstream of the second partition, and the support plate is provided with a plurality of perforations.
作为本发明进一步改进的技术方案，所述排气处理装置包括安装在所述导流罩内且用以支撑所述混合管的支撑架，所述支撑架设有供所述混合管穿过的定位孔以及位于所述定位孔***以供回转气流穿过的气流孔。As a further improved technical solution of the present invention, the exhaust treatment device includes a support frame installed in the shroud to support the mixing tube, and the support frame is provided with a positioning for the mixing tube to pass through. a hole and an air flow hole located at a periphery of the positioning hole for the swirling airflow to pass through.
作为本发明进一步改进的技术方案，所述导流罩套接在所述混合管的所述另一端，并且所述混合管至少部分***所述导流罩内。As a further improved technical solution of the present invention, the shroud is sleeved at the other end of the mixing tube, and the mixing tube is at least partially inserted into the shroud.
相较于现有技术，本发明通过设置与混合管相对齐的导流罩，用以改变气流的流动方向，增加了尿素蒸发的距离和时间，提高了气流混合的均匀性。Compared with the prior art, the present invention adjusts the flow direction of the airflow by setting a flow guide that is aligned with the mixing tube, increases the distance and time of evaporation of the urea, and improves the uniformity of airflow mixing.
图1是本发明排气处理装置的立体示意图。BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of an exhaust gas treatment device of the present invention.
图2是图1的立体透视图。Figure 2 is a perspective perspective view of Figure 1.
图3是图1的部分立体分解图。Figure 3 is a partial exploded perspective view of Figure 1.
图4是图1中第一反应器的立体分解图。Figure 4 is an exploded perspective view of the first reactor of Figure 1.
图5是图1中混合装置的部分立体分解图。Figure 5 is a partially exploded perspective view of the mixing device of Figure 1.
图6是图5进一步的立体分解图。Figure 6 is a further exploded perspective view of Figure 5.
图7是图6中混合管的侧视图。Figure 7 is a side elevational view of the mixing tube of Figure 6.
图8是图6中混合管的主视图，且标明了旋流方向。Figure 8 is a front elevational view of the mixing tube of Figure 6 with the swirling direction indicated.
图9是本发明排气处理装置某一角度的剖面示意图。Figure 9 is a cross-sectional view showing the exhaust gas treatment apparatus of the present invention at an angle.
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。The present invention will be described in detail below with reference to the drawings and specific embodiments.
请参图1至图9所示，本发明揭示了一种排气处理装置100，用以处理发动机(尤其是大功率发动机)的排气。整体上，所述排气处理装置100包括第一反应器1、混合结构2以及第二反应器3。在本发明图示的实施方式中，在排气的流动方向上，所述第一反应器1位于所述第二反应器3的上游。在功能上，所述第一反应器1为氧化催化器(DOC)。所述第二反应器3包括尾气处理模块31，所述尾气处理模块31在本发明图示的实施方式中为选择
性氧化催化模块(SCR)。当然，所属技术领域的技术人员可以理解，本发明的排气处理装置100也可以包括第三反应器，例如氨泄漏催化器模块(ASC)。上述各种反应器可以根据实际需要设计为其他类型的催化器或者组合，在此不再赘述。Referring to Figures 1 through 9, the present invention discloses an exhaust treatment device 100 for treating exhaust gases of an engine, particularly a high power engine. In general, the exhaust treatment device 100 includes a first reactor 1, a mixing structure 2, and a second reactor 3. In the illustrated embodiment of the invention, the first reactor 1 is located upstream of the second reactor 3 in the flow direction of the exhaust gas. Functionally, the first reactor 1 is an oxidation catalyst (DOC). The second reactor 3 includes an exhaust gas treatment module 31, which is selected in the illustrated embodiment of the invention
Soxidative Catalytic Module (SCR). Of course, it will be understood by those skilled in the art that the exhaust treatment device 100 of the present invention may also include a third reactor, such as an ammonia leak catalyst module (ASC). The above various reactors can be designed as other types of catalysts or combinations according to actual needs, and will not be described herein.
请参图1至图4所示，所述第一反应器1包括壳体11、位于所述壳体11一端的进气管12、位于所述壳体11另一端的出气管13以及通过若干隔板14架设在所述壳体11内的氧化催化器模块15。Referring to FIG. 1 to FIG. 4, the first reactor 1 includes a casing 11, an intake pipe 12 at one end of the casing 11, an air outlet pipe 13 at the other end of the casing 11, and a plurality of partitions. The plate 14 is mounted on the oxidation catalyst module 15 in the housing 11.
在本发明图示的实施方式中，所述第一反应器1的出气管13通过螺栓16与所述混合结构2实现连接。In the illustrated embodiment of the invention, the outlet pipe 13 of the first reactor 1 is connected to the mixing structure 2 by bolts 16.
所述混合结构2包括壳体21、安装于所述壳体21内的若干隔板22以及位于所述壳体21内且被所述隔板22支撑的混合装置4。所述尾气处理模块31同样位于所述壳体21内，且位于所述混合装置4的下游。The hybrid structure 2 includes a housing 21, a plurality of partitions 22 mounted in the housing 21, and a mixing device 4 located within the housing 21 and supported by the partition 22. The exhaust gas treatment module 31 is also located within the housing 21 and downstream of the mixing device 4.
所述混合装置4包括混合管41以及与所述混合管41相配合的导流罩42。在本发明图示的实施方式中，所述导流罩42与所述混合管41对齐且套接在所述混合管41的***。The mixing device 4 includes a mixing tube 41 and a shroud 42 that cooperates with the mixing tube 41. In the illustrated embodiment of the invention, the shroud 42 is aligned with the mixing tube 41 and sleeved around the periphery of the mixing tube 41.
请参图9所示，所述壳体21设有端板210。所述若干隔板22包括间隔设置的第一隔板221与第二隔板222。所述壳体21包括位于所述第一隔板221上游的第一腔体211、位于所述第一隔板221与所述第二隔板222之间的第二腔体212、以及位于所述第二隔板222下游的第三腔体213。所述端板210平行于所述第一隔板221，所述排气处理装置100包括用以安装在所述端板210上的尿素喷嘴23，用以将雾化之后的尿素溶液喷入所述混合管41内。Referring to FIG. 9, the housing 21 is provided with an end plate 210. The plurality of partitions 22 include a first partition 221 and a second partition 222 that are spaced apart. The housing 21 includes a first cavity 211 located upstream of the first partition 221, a second cavity 212 between the first partition 221 and the second partition 222, and a location The third cavity 213 downstream of the second partition 222 is described. The end plate 210 is parallel to the first partition 221, and the exhaust treatment device 100 includes a urea nozzle 23 for mounting on the end plate 210 for injecting the urea solution after atomization into the chamber. The inside of the mixing tube 41 is described.
所述混合管41的一端(在图9所示的实施方式中为左端)包括位于所述第一腔体211内且沿周向分布的若干翅片411，用以当排气沿所述翅片411进入所述混合管41时能够形成旋流。所述翅片411沿所述混合管41的长度方向延伸。所述混合管41还包括在所述长度方向上更靠近所述端板210的通孔412，所述通孔412沿所述混合管41的周向分布，用以供排气进入所述混合管41内。One end of the mixing tube 41 (left end in the embodiment shown in FIG. 9) includes a plurality of fins 411 located in the first cavity 211 and distributed in the circumferential direction for exhausting along the wings When the sheet 411 enters the mixing tube 41, a swirl can be formed. The fins 411 extend in the longitudinal direction of the mixing tube 41. The mixing tube 41 further includes a through hole 412 closer to the end plate 210 in the length direction, and the through hole 412 is distributed along the circumferential direction of the mixing tube 41 for exhaust gas to enter the mixing Inside the tube 41.
所述导流罩42套接在所述混合管41的另一端(在图9所示的实施方式中为右端)。所述混合管41沿其长度方向延伸超过所述第二隔板222。所述混合管41至少部分***所述导流罩42内。在本发明图示的实施方式中，所述导流罩42呈碗状，其包括面向所述第二腔体212且与所述第二腔体212连通的开口部421，以及凸伸在所述第三腔体213内的底部422。所述开口部421的开口方向与所述混合管41的所述另一端的开口方向相反，以改变气流的流动方向。所述底部422呈圆弧状，以更好的反射气流。The shroud 42 is sleeved at the other end of the mixing tube 41 (the right end in the embodiment shown in FIG. 9). The mixing tube 41 extends beyond the second partition 222 along its length. The mixing tube 41 is at least partially inserted into the shroud 42. In the illustrated embodiment of the present invention, the shroud 42 has a bowl shape, and includes an opening portion 421 facing the second cavity 212 and communicating with the second cavity 212, and protruding in the chamber The bottom 422 in the third cavity 213 is described. The opening direction of the opening portion 421 is opposite to the opening direction of the other end of the mixing tube 41 to change the flow direction of the airflow. The bottom portion 422 has an arc shape to better reflect the air flow.
所述排气处理装置100还包括位于所述第三腔体213内且用以向上支撑所述导流罩42的支撑板223。所述支撑板223平行于所述第二隔板222且位于所述第二隔板222的下游，所述支撑板223设有若干供气流穿过的穿孔224。The exhaust treatment device 100 further includes a support plate 223 located in the third cavity 213 for supporting the shroud 42 upward. The support plate 223 is parallel to the second partition 222 and located downstream of the second partition 222. The support plate 223 is provided with a plurality of through holes 224 through which air flows.
请参图5、图6及图9所示，所述排气处理装置100包括安装在所述导流罩42内且用以支撑所述混合管41的支撑架43。所述支撑架43设有供所述混合管41穿过的定位孔431
以及位于所述定位孔431***以供回转气流穿过的气流孔432。Referring to FIGS. 5, 6, and 9, the exhaust treatment device 100 includes a support frame 43 mounted in the flow guide 42 for supporting the mixing tube 41. The support frame 43 is provided with a positioning hole 431 through which the mixing tube 41 passes.
And an air flow hole 432 located at the periphery of the positioning hole 431 for the swirling airflow to pass through.
所述第一隔板221设有供所述混合管41穿过的第一开孔2211。所述第二隔板222设有供所述导流罩42穿过的第二开孔2221。所述第二隔板222包括连通所述第二腔体212与所述第三腔体213的若干通孔2222，所述通孔2222位于所述第二开孔2221的外部。The first partition 221 is provided with a first opening 2211 through which the mixing tube 41 passes. The second partition 222 is provided with a second opening 2221 through which the shroud 42 passes. The second partition plate 222 includes a plurality of through holes 2222 communicating with the second cavity 212 and the third cavity 213 , and the through holes 2222 are located outside the second opening 2221 .
使用时，发动机的排气经所述第一反应器1处理后，自所述出气管13进入所述壳体21。首先，当排气进入所述第一腔体211之后，排气穿过所述翅片411与通孔412，并在所述翅片411的作用下形成螺旋状的气流，然后进入所述混合管41。In use, after the exhaust of the engine is processed by the first reactor 1, the casing 21 is introduced from the outlet pipe 13. First, after the exhaust gas enters the first cavity 211, the exhaust gas passes through the fin 411 and the through hole 412, and forms a spiral airflow under the action of the fin 411, and then enters the mixing. Tube 41.
其次，尿素溶液通过位于端部的所述尿素喷嘴23被雾化到所述混合管41内。旋转的气流将尿素溶液包围，一方面提高混合的均匀性，另一方面降低了因尿素溶液与管壁接触而产生结晶的风险。Next, the urea solution is atomized into the mixing tube 41 through the urea nozzle 23 at the end. The swirling gas stream encloses the urea solution, on the one hand increasing the uniformity of the mixing and on the other hand reducing the risk of crystallization due to contact of the urea solution with the tube wall.
气流在所述混合管41内向另一侧移动，进入所述导流罩42内，并借助所述导流罩42改变气流的流动方向，使气流进入到所述第二腔体212内。随后，气流穿过第二隔板222上的通孔2222进入到第三腔体213，并经所述第二反应器3处理之后流出。通过设置套接在混合管41***的导流罩42，改变气流的流动方向，增加了尿素蒸发的距离和时间，提高了气流混合的均匀性。The air flow moves in the mixing tube 41 to the other side, into the shroud 42, and the flow direction of the air flow is changed by the shroud 42 to allow airflow into the second cavity 212. Subsequently, the gas stream enters the third cavity 213 through the through hole 2222 in the second separator 222, and flows out after being processed by the second reactor 3. By providing a shroud 42 that is sleeved around the periphery of the mixing tube 41, the flow direction of the airflow is changed, the distance and time of evaporation of the urea are increased, and the uniformity of airflow mixing is improved.
另外，以上实施例仅用于说明本发明而并非限制本发明所描述的技术方案，对本说明书的理解应该以所属技术领域的技术人员为基础，尽管本说明书参照上述的实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，所属技术领域的技术人员仍然可以对本发明进行修改或者等同替换，而一切不脱离本发明的精神和范围的技术方案及其改进，均应涵盖在本发明的权利要求范围内。
In addition, the above embodiments are only for illustrating the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present specification should be based on those skilled in the art, although the present specification has been carried out with reference to the above embodiments. DETAILED DESCRIPTION OF THE INVENTION However, those skilled in the art should understand that the invention may be modified or equivalently replaced by those skilled in the art without departing from the spirit and scope of the invention. It is intended to be included within the scope of the appended claims.
Claims (10)
- 一种排气处理装置，其包括壳体、安装于所述壳体内的若干隔板、位于所述壳体内且被所述隔板支撑的混合装置、以及位于所述混合装置下游的尾气处理模块，其中所述若干隔板包括间隔设置的第一隔板与第二隔板，所述壳体包括位于所述第一隔板上游的第一腔体、位于所述第一隔板与所述第二隔板之间的第二腔体、以及位于所述第二隔板下游的第三腔体，所述第二隔板包括连通所述第二腔体与所述第三腔体的至少一个通孔，其特征在于：所述混合装置包括混合管以及与所述混合管相配合的导流罩，其中所述混合管的一端包括位于所述第一腔体内且沿周向分布的若干翅片，用以当排气沿所述翅片进入所述混合管时能够形成旋流；所述导流罩与所述混合管的另一端对齐，所述导流罩包括与所述第二腔体连通的开口部，所述开口部的开口方向与所述混合管的所述另一端的开口方向相反以改变气流的流动方向。An exhaust treatment device includes a housing, a plurality of partitions mounted in the housing, a mixing device located within the housing and supported by the partition, and an exhaust gas treatment module located downstream of the mixing device The plurality of partitions including a first partition and a second partition disposed at intervals, the housing including a first cavity upstream of the first partition, located at the first partition and the a second cavity between the second baffles and a third cavity downstream of the second baffle, the second baffle including at least the second cavity and the third cavity a through hole, characterized in that the mixing device comprises a mixing tube and a shroud cooperating with the mixing tube, wherein one end of the mixing tube comprises a plurality of ones located in the first cavity and distributed in the circumferential direction a fin for forming a swirl when the exhaust gas enters the mixing tube along the fin; the shroud is aligned with the other end of the mixing tube, the shroud including the second An opening portion communicating with the cavity, the opening direction of the opening portion is mixed with the opening The opening direction of the other end of the tube opposite to change the air flow direction.
- 如权利要求1所述的排气处理装置，其特征在于：所述第一隔板设有供所述混合管穿过的第一开孔，所述第二隔板设有供所述导流罩穿过的第二开孔，所述通孔位于所述第二开孔的外部。The exhaust gas treatment device according to claim 1, wherein said first partition is provided with a first opening through which said mixing tube passes, and said second partition is provided with said flow guiding a second opening through which the cover passes, the through hole being located outside the second opening.
- 如权利要求1所述的排气处理装置，其特征在于：所述壳体设有平行于所述第一隔板的端板，所述排气处理装置包括用以安装在所述端板上的尿素喷嘴，用以将雾化之后的尿素溶液喷入所述混合管内。The exhaust gas treatment device according to claim 1, wherein said housing is provided with an end plate parallel to said first partition, and said exhaust treatment means includes means for mounting on said end plate a urea nozzle for injecting a urea solution after atomization into the mixing tube.
- 如权利要求3所述的排气处理装置，其特征在于：所述翅片沿所述混合管的长度方向延伸，所述混合管还包括在所述长度方向上更靠近所述端板的通孔，所述通孔沿所述混合管的周向分布，用以供排气进入所述混合管内。The exhaust gas treatment device according to claim 3, wherein said fin extends in a length direction of said mixing tube, and said mixing tube further includes a passage closer to said end plate in said length direction A hole, the through hole being distributed along a circumference of the mixing tube for supplying exhaust gas into the mixing tube.
- 如权利要求1所述的排气处理装置，其特征在于：所述导流罩呈碗状，其包括凸伸在所述第三腔体内的底部。The exhaust treatment device of claim 1 wherein said shroud is bowl-shaped and includes a bottom portion that projects into said third cavity.
- 如权利要求5所述的排气处理装置，其特征在于：所述底部呈圆弧状，所述混合管沿其长度方向延伸超过所述第二隔板。The exhaust gas treatment device according to claim 5, wherein said bottom portion has an arc shape, and said mixing tube extends beyond said second partition along a length thereof.
- 如权利要求6所述的排气处理装置，其特征在于：所述排气处理装置还包括位于所述第三腔体内且用以向上支撑所述导流罩的支撑板。The exhaust treatment device according to claim 6, wherein said exhaust treatment device further comprises a support plate located in said third cavity for supporting said shroud upward.
- 如权利要求7所述的排气处理装置，其特征在于：所述支撑板平行于所述第二隔板且位于所述第二隔板的下游，所述支撑板设有若干穿孔。The exhaust gas treatment device according to claim 7, wherein said support plate is parallel to said second partition and downstream of said second partition, said support plate being provided with a plurality of perforations.
- 如权利要求1至8项中任意一项所述的排气处理装置，其特征在于：所述排气处理装置包括安装在所述导流罩内且用以支撑所述混合管的支撑架，所述支撑架设有供所述混合管穿过的定位孔以及位于所述定位孔***以供回转气流穿过的气流孔。The exhaust gas treatment device according to any one of claims 1 to 8, wherein the exhaust gas treatment device includes a support frame installed in the flow guide cover to support the mixing tube. The support frame is provided with a positioning hole through which the mixing tube passes and an air flow hole located at the periphery of the positioning hole for the swirling airflow to pass through.
- 如权利要求1所述的排气处理装置，其特征在于：所述导流罩套接在所述混合管的所述另一端，并且所述混合管至少部分***所述导流罩内。 The exhaust treatment device according to claim 1, wherein said shroud is sleeved at said other end of said mixing tube, and said mixing tube is at least partially inserted into said shroud.
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| CN201520637491.0U CN204877615U (en) | 2015-08-21 | 2015-08-21 | Exhaust treatment appts |
| CN201520637491.0 | 2015-08-21 |
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| PCT/CN2016/095266 WO2017032231A1 (en) | 2015-08-21 | 2016-08-15 | Exhaust gas treatment apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10612443B2 (en) | 2017-02-20 | 2020-04-07 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas post-treatment apparatus |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089750B (en) * | 2015-08-21 | 2018-04-06 | 天纳克（苏州）排放***有限公司 | exhaust gas treatment device |
| CN204877615U (en) * | 2015-08-21 | 2015-12-16 | 天纳克（苏州）排放***有限公司 | Exhaust treatment appts |
| CN108425724B (en) * | 2016-04-11 | 2019-07-23 | 天纳克（苏州）排放***有限公司 | Tail-gas after treatment apparatus |
| CN108915831B (en) | 2017-09-19 | 2021-04-02 | 天纳克（苏州）排放***有限公司 | Tail gas aftertreatment mixing arrangement |
| DE102018124025A1 (en) * | 2018-09-28 | 2020-04-02 | Man Truck & Bus Se | Device for admixing a liquid reducing agent for the exhaust gas of an internal combustion engine and motor vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050903A (en) * | 1976-10-29 | 1977-09-27 | Uop Inc. | Combination muffler and catalytic converter |
| CN203347898U (en) * | 2013-07-08 | 2013-12-18 | 潍柴动力股份有限公司 | Integrated selective catalytic reduction (SCR) catalytic silencer |
| JP2014114717A (en) * | 2012-12-07 | 2014-06-26 | Hino Motors Ltd | Return passage and exhaust emission control device having the same |
| CN104564251A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Novel exhaust ejection postprocessor |
| CN204312165U (en) * | 2014-12-19 | 2015-05-06 | 天纳克（苏州）排放***有限公司 | Engine exhaust after-treatment system |
| CN204511582U (en) * | 2014-12-05 | 2015-07-29 | 天纳克（苏州）排放***有限公司 | Engine exhaust after-treatment system |
| WO2015116354A1 (en) * | 2014-01-28 | 2015-08-06 | Tenneco Automotive Operating Company Inc. | Axial flow atomization module |
| CN105089750A (en) * | 2015-08-21 | 2015-11-25 | 天纳克（苏州）排放***有限公司 | Exhaust gas treatment device |
| CN204877615U (en) * | 2015-08-21 | 2015-12-16 | 天纳克（苏州）排放***有限公司 | Exhaust treatment appts |
| CN205605279U (en) * | 2016-04-12 | 2016-09-28 | 天纳克（苏州）排放***有限公司 | Hybrid module |
-
2015
- 2015-08-21 CN CN201520637491.0U patent/CN204877615U/en active Active
-
2016
- 2016-08-15 WO PCT/CN2016/095266 patent/WO2017032231A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050903A (en) * | 1976-10-29 | 1977-09-27 | Uop Inc. | Combination muffler and catalytic converter |
| JP2014114717A (en) * | 2012-12-07 | 2014-06-26 | Hino Motors Ltd | Return passage and exhaust emission control device having the same |
| CN203347898U (en) * | 2013-07-08 | 2013-12-18 | 潍柴动力股份有限公司 | Integrated selective catalytic reduction (SCR) catalytic silencer |
| CN104564251A (en) * | 2013-10-28 | 2015-04-29 | 十堰银轮汽车零部件有限公司 | Novel exhaust ejection postprocessor |
| WO2015116354A1 (en) * | 2014-01-28 | 2015-08-06 | Tenneco Automotive Operating Company Inc. | Axial flow atomization module |
| CN204511582U (en) * | 2014-12-05 | 2015-07-29 | 天纳克（苏州）排放***有限公司 | Engine exhaust after-treatment system |
| CN204312165U (en) * | 2014-12-19 | 2015-05-06 | 天纳克（苏州）排放***有限公司 | Engine exhaust after-treatment system |
| CN105089750A (en) * | 2015-08-21 | 2015-11-25 | 天纳克（苏州）排放***有限公司 | Exhaust gas treatment device |
| CN204877615U (en) * | 2015-08-21 | 2015-12-16 | 天纳克（苏州）排放***有限公司 | Exhaust treatment appts |
| CN205605279U (en) * | 2016-04-12 | 2016-09-28 | 天纳克（苏州）排放***有限公司 | Hybrid module |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10612443B2 (en) | 2017-02-20 | 2020-04-07 | Tenneco (Suzhou) Emission System Co., Ltd. | Exhaust gas post-treatment apparatus |
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|---|---|
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