WO2017114013A1 - 尿素喷嘴 - Google Patents

尿素喷嘴 Download PDF

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Publication number
WO2017114013A1
WO2017114013A1 PCT/CN2016/105814 CN2016105814W WO2017114013A1 WO 2017114013 A1 WO2017114013 A1 WO 2017114013A1 CN 2016105814 W CN2016105814 W CN 2016105814W WO 2017114013 A1 WO2017114013 A1 WO 2017114013A1
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WO
WIPO (PCT)
Prior art keywords
urea
passage
urea nozzle
joint
main body
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PCT/CN2016/105814
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English (en)
French (fr)
Inventor
周林
徐明道
李栋
刘浩
杨慧敏
Original Assignee
天纳克（苏州）排放系统有限公司
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Application filed by 天纳克（苏州）排放系统有限公司 filed Critical 天纳克（苏州）排放系统有限公司
Publication of WO2017114013A1 publication Critical patent/WO2017114013A1/zh

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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 a urea nozzle, belonging to the technical field of engine exhaust aftertreatment.
  • Non-air-assisted urea injection systems include air-assisted and non-air-assisted.
  • the non-air-assisted urea injection system generally includes a pump, a filter, a metering nozzle connected to the pump, and a plurality of sensors and the like.
  • Such urea injection systems tend to have very high requirements on the measuring nozzle. Since the measuring nozzle is installed on the exhaust pipe, it is easy to be affected by the high temperature of the exhaust gas, and even burned out at a high temperature.
  • the air-assisted urea injection system introduces compressed air, which improves the effect of urea atomization and has been favored by many manufacturers.
  • an air-assisted urea nozzle including a main body portion, a pneumatic joint mounted at an upper end of the main body portion, and a liquid passage mounted on a side surface of the main body portion a joint, wherein the main body portion is provided with a first passage, the pneumatic joint is provided with a second passage communicating with the first passage, and the liquid passage joint is provided with a third passage communicating with the first passage A check valve is installed in the liquid line joint.
  • the air passage joint is welded on the main body portion, and the air passage joint extends vertically.
  • the liquid path joint is welded on the main body portion, and the liquid path joint extends horizontally, and the liquid path joint is located below the air passage joint.
  • the urea nozzle includes a bent portion connected to the main body portion, and the bent portion is provided with a fourth passage communicating with the first passage.
  • the urea nozzle includes a cap that is sleeved at an end of the bent portion, and the cap is provided with a urea injection hole that communicates with the fourth passage.
  • the urea nozzle includes a mounting flange, and the main body portion is provided with a constriction at a position close to the mounting flange.
  • the mounting flange is connected at a boundary between the main body portion and the bent portion.
  • the urea nozzle includes a heat insulating portion under the mounting flange, the heat insulating portion is located at a periphery of the bent portion, and the heat insulating portion and the bending portion There is a sealed insulating medium between the parts.
  • the heat insulating medium is air.
  • the heat insulating portion is fixed on the mounting flange.
  • the present invention prevents the compressed air from entering the liquid path during the process of purifying the urea by installing a one-way valve in the liquid line joint, and on the other hand, preventing the liquid path when the system is shut down.
  • the urea solution enters the urea nozzle, even the exhaust pipe or the post-treatment package, thereby increasing the reliability of the urea nozzle.
  • Figure 1 is a schematic diagram of a urea injection system of the present invention.
  • Figure 2 is a perspective view of the urea injection assembly of Figure 1.
  • Figure 3 is a perspective view of another angle of Figure 2.
  • FIG. 4 is a partial perspective view of FIG. 1 in which the first upper casing and the second upper casing are separated.
  • FIG. 5 is a plan view after removing the first upper case, the second upper case, and the bolts of FIG. 4.
  • Fig. 6 is a partially exploded perspective view of Fig. 5;
  • Figure 7 is a further exploded perspective view of Figure 5.
  • Figure 8 is a cross-sectional view taken along line A-A of Figure 5 and showing the flow direction of the liquid path.
  • Figure 9 is a cross-sectional view taken along line B-B of Figure 5 and showing the flow direction of the gas path.
  • Figure 10 is a perspective view of the urea nozzle of Figure 1.
  • Figure 11 is a left side view of Figure 10.
  • Figure 12 is a plan view of Figure 10.
  • Figure 13 is a cross-sectional view taken along line C-C of Figure 12 .
  • an air-assisted urea injection system 100 that includes a urea injection assembly 10, a urea nozzle 20 coupled to a urea injection assembly 10, and a controller (DCU) 30.
  • the urea injection assembly 10 includes a liquid path 101 including a pump 11, a urea tank 12, a filter 13 connected between the pump 11 and the urea tank 12, and a gas path 102.
  • the gas path 102 includes a compressed air source 21, a pneumatic valve 22, an air filter 23 connected between the compressed air source 21 and the pneumatic valve 22, and a second pressure sensor located downstream of the pneumatic valve 22. twenty four.
  • the pump 11, the pneumatic valve 22, the first pressure sensor 14, and the second pressure sensor 24 are all coupled to the controller 30 for transmitting signals.
  • the urea nozzle 20 is provided with a liquid path joint 91 connected to the liquid path 101 and a gas path joint 92 connected to the gas path 102.
  • a check valve 912 is provided in the liquid line joint 91.
  • the one-way valve 912 is opened, and the urea solution in the liquid path 101 and the compressed air in the air path 102 are mixed in the urea nozzle 20, and under the control of the controller 30, the exhaust gas is exhausted.
  • the atomized urea solution is sprayed in a tube or a post-treatment package to purify the exhaust gas.
  • the pump 11 stops working, and the compressed air blows off the residual urea solution in the system piping, thereby preventing the system from freezing due to freezing of the urea, and on the other hand preventing the residue in the urea nozzle 20 Urea solution
  • the urea nozzle 20 is blocked by precipitation of crystals.
  • the one-way valve 912 is closed to prevent compressed air from entering the liquid path 101 on the one hand; on the other hand, the urea solution of the liquid path 101 is prevented from entering the urea nozzle 20 or even the exhaust pipe when the system is shut down. Or post-process the package.
  • the urea injection assembly 10 includes a fluid path 101 (shown by solid arrows in Figure 5) and a gas path 102 (shown by hollow arrows in Figure 5).
  • the urea injection assembly 10 includes a housing 3, a first upper housing 4 secured to the housing 3, and a second upper housing 5 above the first upper housing 4.
  • the pump 11, the filter 13, the first pressure sensor 14, the air pressure valve 22, the second pressure sensor 24, and the like are all mounted in the casing 3.
  • the controller 30 is located within the second upper housing 5.
  • the housing 3 is substantially rectangular parallelepiped and includes a bottom wall 35 and four side walls connected to the bottom wall 35.
  • the four sidewalls include a first sidewall 31, a second sidewall 32 opposite to the first sidewall 31, and a third sidewall connecting the first sidewall 31 and the second sidewall 32 33 and a fourth side wall 34 opposite the third side wall 33.
  • the bottom wall 35 and the four side walls together define a receiving space 36 for receiving the pump 11, the filter 13, the first pressure sensor 14, the air pressure valve 22, the second pressure sensor 24, and the like.
  • the urea injection assembly 10 includes a urea inlet fitting 311, a urea outlet fitting 312, a gas outlet fitting 313, and a harness connector 314 that are secured to the first sidewall 31 and extend outwardly beyond the first sidewall 31.
  • the urea injection assembly 10 also includes a gas inlet connection 321 that is secured to the second side wall 32 and extends outwardly beyond the second side wall 32.
  • the urea inlet fitting 311 is injection molded with the first side wall 31.
  • the urea inlet fitting 311 is directly connected to the filter 13, and the gas inlet fitting 321 is directly connected to the pneumatic valve 22.
  • the pneumatic valve 22 is fixed to the second side wall 32.
  • the housing 3 is provided with a first connecting hole 37 and a second connecting hole 38 below the first connecting hole 37 , wherein the first connecting hole 37 is located in the liquid path 101 .
  • the filter 13 and the pump 11 are connected to each other; the second connecting hole 38 is located on the air passage 102.
  • the pump 11 is disposed obliquely within the housing 3 and is generally aligned along a diagonal of the housing 3.
  • the pump 11 is a plunger pump for metering, which omits the internal structure of the pump 11, and is only shown in outline.
  • the urea injection assembly 10 includes a bracket 39 that is fixed to the housing 3 and supports the pump 11 upward. Further, the pump 11 is fixed to the bottom wall 35 by a fixing ring 391.
  • the urea injection assembly 10 includes a connecting tube assembly 6 coupled to the pneumatic valve 22.
  • the connecting pipe assembly 6 includes a first connecting portion 61 connected to the air pressure valve 22, a second connecting portion 62 extending obliquely from the first connecting portion 61, and a first connection with the second connecting portion 62 A joint 63 into which the first joint 63 is inserted.
  • the urea injection assembly 10 includes a second joint 64 connected between the pump 11 and the first connection hole 37, wherein one end of the second joint 64 is inserted into the inlet 111 of the pump 11, and One end is inserted into the first connection hole 37.
  • the urea injection assembly 10 further includes a connection on the liquid path 101 and located at the a sensor holder 7 downstream of the pump 11, the sensor holder 7 including a first cylindrical portion 71 extending upward, a third joint 72 extending toward the pump 11, and a second cylindrical shape extending toward the urea outlet joint 312 The portion 73 and the third cylindrical portion 74 extending downward.
  • the first pressure sensor 14 is at least partially mounted within the first tubular portion 71 and the third joint 72 is inserted into the outlet 112 of the pump 11.
  • the second cylindrical portion 73 is perpendicular to the first cylindrical portion 71, and the urea outlet joint 312 is inserted into the second cylindrical portion 73.
  • the third cylindrical portion 74 is aligned with the first cylindrical portion 71 in the vertical direction, and the urea injection assembly 10 includes an elastic body 75 housed in the third cylindrical portion 74.
  • the elastic body 75 may be housed in the second cylindrical portion 73.
  • the function of the elastomer 75 is that when the urea solution remaining in the line freezes, the elastomer 75 can be compressed to absorb the expanded volume due to urea freezing, preventing the system from being frozen.
  • the urea nozzle 20 includes a main body portion 90, an air passage joint 92 attached to an upper end of the main body portion 90, a liquid passage joint 91 attached to a side surface of the main body portion 90, and a bend connected to the main body portion 90.
  • the portion 93 is a cap 94 that is sleeved at the end of the bent portion 93, a mounting flange 95 for mounting the urea nozzle 20, and a heat insulating portion 96 located below the mounting flange 95.
  • the main body portion 90 is provided with a first passage 901
  • the air passage joint 92 is provided with a second passage 921 communicating with the first passage 901
  • the liquid passage joint 91 is provided to communicate with the first passage 901.
  • a check valve 912 is mounted in the fluid line joint 91.
  • the urea nozzle 20 is an internal mixing nozzle, wherein the urea solution from the liquid junction 91 and the compressed air from the pneumatic joint 92 are The first passage 901 is mixed and then moved toward the cap 94.
  • the pneumatic joint 92 is welded to the body portion 90 and the pneumatic joint 92 extends vertically.
  • the fluid line joint 91 is welded to the body portion 90.
  • the fluid line joint 91 is located below the air passage joint 92.
  • the liquid path joint 91 extends horizontally to avoid urea leakage during vertical installation, reduce urea remaining in the urea nozzle 20, and improve the effect of urea emptying.
  • the bent portion 93 extends into an exhaust pipe or a post-processing package, and the bent portion 93 is provided with a fourth passage 931 that communicates with the first passage 901.
  • the cap 94 is provided with a urea injection hole 941 that communicates with the fourth passage 931.
  • the main body portion 90 is provided with a constricted portion 902 at a position close to the mounting flange 95 to reduce the heat transfer area, and to reduce the high temperature exhaust gas to conduct heat to the urea nozzle 20.
  • the mounting flange 95 is connected at the boundary between the main body portion 90 and the bent portion 93 to facilitate integral welding.
  • the heat insulating portion 96 is located on the outer periphery of the bent portion 93, and a sealed heat insulating medium 961 is disposed between the heat insulating portion 96 and the bent portion 93.
  • the insulating medium includes, but is not limited to, air.
  • the heat insulating portion 96 is fixed to the mounting flange 95.

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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

一种空气辅助式的尿素喷嘴(20)，其包括主体部(90)、安装在所述主体部的上端的气路接头(92)以及安装在所述主体部的侧面的液路接头(91)，其中所述主体部设有第一通道(901)，所述气路接头设有与所述第一通道连通的第二通道(921)，所述液路接头设有与所述第一通道连通的第三通道(911)，所述液路接头中安装有一个单向阀(912)。该尿素喷嘴避免了在尿素清空的过程中压缩空气进入液路，提高了喷嘴的可靠性。

Description

尿素喷嘴
本申请要求了申请日为2015年12月31日、申请号为201521138479.1、发明名称为“尿素喷嘴”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。
技术领域
本发明涉及一种尿素喷嘴，属于发动机尾气后处理技术领域。
背景技术
现有的尿素喷射系统包括空气辅助式的和非空气辅助式的。其中，非空气辅助式的尿素喷射系统通常包括泵、过滤器、与泵连接的计量嘴以及若干传感器等。这种尿素喷射系统往往对计量嘴的要求甚高，由于计量嘴安装在排气管上，其容易因受到排气的高温而影响计量精度，甚至被高温烧坏。
空气辅助式的尿素喷射系统将压缩空气引入，从而提高了尿素雾化的效果，已经得到众多厂商的青睐。
发明内容
本发明的目的在于提供一种性能可靠的尿素喷嘴。
为实现上述目的，本发明采用如下技术方案：一种空气辅助式的尿素喷嘴，其包括主体部、安装在所述主体部的上端的气路接头以及安装在所述主体部的侧面的液路接头，其中所述主体部设有第一通道，所述气路接头设有与所述第一通道连通的第二通道，所述液路接头设有与所述第一通道连通的第三通道，所述液路接头中安装有一个单向阀。
作为本发明进一步改进的技术方案，所述气路接头焊接在所述主体部上，且所述气路接头竖直延伸。
作为本发明进一步改进的技术方案，所述液路接头焊接在主体部上，且所述液路接头水平延伸，所述液路接头位于所述气路接头的下方。
作为本发明进一步改进的技术方案，所述尿素喷嘴包括与所述主体部连接的弯折部，所述弯折部设有与所述第一通道连通的第四通道。
作为本发明进一步改进的技术方案，所述尿素喷嘴包括套接在所述弯折部的末端的帽，所述帽设有与所述第四通道连通的尿素喷射孔。
作为本发明进一步改进的技术方案，所述尿素喷嘴包括安装法兰，所述主体部在靠近所述安装法兰的位置设有收缩部。
作为本发明进一步改进的技术方案，所述安装法兰连接在所述主体部与所述弯折部的交界处。
作为本发明进一步改进的技术方案，所述尿素喷嘴包括位于所述安装法兰下方的隔热部，所述隔热部位于所述弯折部的外围，所述隔热部与所述弯折部之间设有密闭的隔热介质。
作为本发明进一步改进的技术方案，所述隔热介质为空气。
作为本发明进一步改进的技术方案，所述隔热部固定在所述安装法兰上。
相较于现有技术，本发明通过在所述液路接头中安装单向阀，一方面避免了在尿素清空的过程中压缩空气进入液路，另一方面，在系统停机时，防止液路的尿素溶液进入尿素喷嘴，甚至排气管或者后处理封装中，从而提高了尿素喷嘴的可靠性。
附图说明
图1是本发明尿素喷射系统的原理图。
图2是图1中尿素喷射组件的立体示意图。
图3是图2另一角度的立体示意图。
图4是图1的部分立体示意图，其中第一上壳体与第二上壳体被分离出来。
图5是去除图4中的第一上壳体、第二上壳体以及螺栓之后的俯视图。
图6是图5的部分立体分解图。
图7是图5进一步的立体分解图。
图8是沿图5中A-A线的剖视图，并且标出了液路的流动方向。
图9是沿图5中B-B线的剖视图，并且标出了气路的流动方向。
图10是图1中尿素喷嘴的立体示意图。
图11是图10的左视图。
图12是图10的俯视图。
图13是沿图12中C-C线的剖视图。
具体实施方式
请参图1及图2所示，本发明揭示了一种空气辅助式的尿素喷射系统100，其包括尿素喷射组件10、与尿素喷射组件10相连的尿素喷嘴20以及控制器(DCU)30。所述尿素喷射组件10包括液路101以及气路102，其中所述液路101包括泵11、尿素箱12、连接在所述泵11与所述尿素箱12之间的过滤器13以及位于所述泵11的下游的第一压力传感器14。所述气路102包括压缩空气源21、气压阀22、连接在所述压缩空气源21与所述气压阀22之间的空气过滤器23、以及位于所述气压阀22下游的第二压力传感器24。所述泵11、气压阀22、第一压力传感器14以及第二压力传感器24均与所述控制器30连接，以传递信号。
请参图1及图13所示，所述尿素喷嘴20设有与所述液路101相连的液路接头91以及与所述气路102相连的气路接头92。所述液路接头91中设有单向阀912。
正常工作时，所述单向阀912打开，液路101中的尿素溶液与气路102中的压缩空气在所述尿素喷嘴20中混合之后，在所述控制器30的控制下，向排气管或者后处理封装中喷射雾化的尿素溶液，对排气进行净化处理。
当需要清空(purge)时，所述泵11停止工作，压缩空气将系统管路中残留的尿素溶液吹掉，一方面防止因尿素结冰而冻坏系统，另一方面防止残留在尿素喷嘴20中的尿素溶液 因析出晶体而堵住尿素喷嘴20。在此清空的过程中，所述单向阀912关闭，一方面防止压缩空气进入液路101；另一方面，在系统停机时，防止液路101的尿素溶液进入尿素喷嘴20，甚至排气管或者后处理封装中。
请参图2至图9所示，以下就尿素喷射组件10的结构进行详细描述。
在本发明图示的实施方式中，所述尿素喷射组件10包括液路101(参图5中的实心箭头所示)以及气路102(参图5中的空心箭头所示)。从结构上看，所述尿素喷射组件10包括壳体3、固定在所述壳体3上的第一上壳体4以及位于第一上壳体4上方的第二上壳体5。其中，所述泵11、过滤器13、第一压力传感器14、气压阀22、第二压力传感器24等均安装在所述壳体3内。所述控制器30位于所述第二上壳体5内。
请参图4及图6所示，所述壳体3大致为长方体，其包括底壁35以及与所述底壁35相连的四个侧壁。所述四个侧壁包括第一侧壁31、与所述第一侧壁31相对的第二侧壁32、连接所述第一侧壁31与所述第二侧壁32的第三侧壁33以及与所述第三侧壁33相对的第四侧壁34。所述底壁35与所述四个侧壁共同围成一个收容空间36，用以收容所述泵11、过滤器13、第一压力传感器14、气压阀22以及第二压力传感器24等。所述尿素喷射组件10包括固定在所述第一侧壁31上且向外延伸超出所述第一侧壁31的尿素进口接头311、尿素出口接头312、气体出口接头313以及线束接头314。所述尿素喷射组件10还包括固定在所述第二侧壁32上且向外延伸超出所述第二侧壁32的气体进口接头321。在本发明图示的实施方式中，所述尿素进口接头311与所述第一侧壁31注塑成型。所述尿素进口接头311与所述过滤器13直接相连，所述气体进口接头321与所述气压阀22直接相连。所述气压阀22固定在所述第二侧壁32上。
请参图7所示，所述壳体3设有第一连接孔37以及位于所述第一连接孔37下方的第二连接孔38，其中所述第一连接孔37位于所述液路101上且连接所述过滤器13与所述泵11；所述第二连接孔38位于所述气路102上。
请参图4及图5所示，所述泵11倾斜设置在所述壳体3内，大致沿所述壳体3的一个对角线排列。在本发明图示的实施方式中，所述泵11为用于计量的柱塞泵，其省略了泵11的内部结构，仅以外形表示。所述尿素喷射组件10包括固定在所述壳体3上且向上支撑所述泵11的支架39。另外，所述泵11通过一个固定环391固定到所述底壁35上。
请参图7至图9所示，所述尿素喷射组件10包括与所述气压阀22相连的连接管组件6。所述连接管组件6包括与所述气压阀22连接的第一连接部61、自所述第一连接部61倾斜延伸的第二连接部62以及与所述第二连接部62连接的第一接头63，所述第一接头63插入所述第二连接孔38中。所述尿素喷射组件10包括连接在所述泵11与所述第一连接孔37之间的第二接头64，其中，所述第二接头64的一端插入所述泵11的入口111中，另一端插入所述第一连接孔37中。
请参图6及图8所示，所述尿素喷射组件10还包括连接在所述液路101上且位于所述 泵11的下游的传感器座7，所述传感器座7包括向上延伸的第一筒状部71、向所述泵11延伸的第三接头72、向所述尿素出口接头312延伸的第二筒状部73以及向下延伸的第三筒状部74。其中，所述第一压力传感器14至少部分安装在所述第一筒状部71内，所述第三接头72插入所述泵11的出口112中。所述第二筒状部73垂直于所述第一筒状部71，所述尿素出口接头312插入所述第二筒状部73中。所述第三筒状部74与所述第一筒状部71在竖直方向上对齐，所述尿素喷射组件10包括收容在所述第三筒状部74内的弹性体75。当然，在其他实施方式中，弹性体75也可以收容在所述第二筒状部73内。所述弹性体75的功能是当管路中残留的尿素溶液结冰时，该弹性体75可以被压缩以吸收因尿素结冰产生的膨胀体积，防止系统被冻坏。
请参图10至图13所示，以下就尿素喷嘴20的结构进行详细描述。
所述尿素喷嘴20包括主体部90、安装在所述主体部90的上端的气路接头92、安装在所述主体部90的侧面的液路接头91、与所述主体部90连接的弯折部93、套接在所述弯折部93的末端的帽94、用以安装所述尿素喷嘴20的安装法兰95以及位于所述安装法兰95下方的隔热部96。所述主体部90设有第一通道901，所述气路接头92设有与所述第一通道901连通的第二通道921，所述液路接头91设有与所述第一通道901连通的第三通道911。所述液路接头91中安装有一个单向阀912。
请参图13所示，在本发明图示的实施方式中，所述尿素喷嘴20为内混式的喷嘴，其中来自液路接头91的尿素溶液与来自气路接头92的压缩空气在所述第一通道901中混合，然后向帽94移动。
在本发明图示的实施方式中，所述气路接头92焊接在所述主体部90上，且所述气路接头92竖直延伸。
在本发明图示的实施方式中，所述液路接头91焊接在主体部90上。所述液路接头91位于所述气路接头92的下方。所述液路接头91水平延伸，以避免竖直安装时的尿素渗漏，减少残留在尿素喷嘴20中的尿素，提高尿素清空的效果。
所述弯折部93延伸入排气管或者后处理封装中，所述弯折部93设有与所述第一通道901连通的第四通道931。
所述帽94设有与所述第四通道931连通的尿素喷射孔941。
所述主体部90在靠近所述安装法兰95的位置设有收缩部902，以减小传热面积，降低高温的排气向尿素喷嘴20传导热量。
所述安装法兰95连接在所述主体部90与所述弯折部93的交界处，便于整体焊接。
所述隔热部96位于所述弯折部93的外围，所述隔热部96与所述弯折部93之间设有密闭的隔热介质961。所述隔热介质包括但不限于空气。所述隔热部96固定在所述安装法兰95上。
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。

Claims (10)

  1. 一种空气辅助式的尿素喷嘴，其包括主体部、安装在所述主体部的上端的气路接头以及安装在所述主体部的侧面的液路接头，其中所述主体部设有第一通道，所述气路接头设有与所述第一通道连通的第二通道，所述液路接头设有与所述第一通道连通的第三通道，其特征在于：所述液路接头中安装有一个单向阀。
  2. 如权利要求1所述的尿素喷嘴，其特征在于：所述气路接头焊接在所述主体部上，且所述气路接头竖直延伸。
  3. 如权利要求1所述的尿素喷嘴，其特征在于：所述液路接头焊接在主体部上，且所述液路接头水平延伸，所述液路接头位于所述气路接头的下方。
  4. 如权利要求1所述的尿素喷嘴，其特征在于：所述尿素喷嘴包括与所述主体部连接的弯折部，所述弯折部设有与所述第一通道连通的第四通道。
  5. 如权利要求4所述的尿素喷嘴，其特征在于：所述尿素喷嘴包括套接在所述弯折部的末端的帽，所述帽设有与所述第四通道连通的尿素喷射孔。
  6. 如权利要求4所述的尿素喷嘴，其特征在于：所述尿素喷嘴包括安装法兰，所述主体部在靠近所述安装法兰的位置设有收缩部。
  7. 如权利要求6所述的尿素喷嘴，其特征在于：所述安装法兰连接在所述主体部与所述弯折部的交界处。
  8. 如权利要求6所述的尿素喷嘴，其特征在于：所述尿素喷嘴包括位于所述安装法兰下方的隔热部，所述隔热部位于所述弯折部的外围，所述隔热部与所述弯折部之间设有密闭的隔热介质。
  9. 如权利要求8所述的尿素喷嘴，其特征在于：所述隔热介质为空气。
  10. 如权利要求8所述的尿素喷嘴，其特征在于：所述隔热部固定在所述安装法兰上。
PCT/CN2016/105814 2015-12-31 2016-11-15 尿素喷嘴 WO2017114013A1 (zh)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028826A1 (ja) * 2003-09-19 2005-03-31 Nissan Diesel Motor Co., Ltd. エンジンの排気浄化装置
EP1676986A1 (en) * 2003-09-30 2006-07-05 Nissan Diesel Motor Co., Ltd. Exhaust gas purification device and exhaust gas purification method for engine
CN101806238A (zh) * 2010-03-13 2010-08-18 中国第一汽车集团公司 一种泵动力的空气辅助雾化尿素还原剂喷射控制系统
CN204457961U (zh) * 2015-01-04 2015-07-08 中国汽车工程研究院股份有限公司 一种用于尿素水溶液精确计量的喷射装置
CN204609994U (zh) * 2015-05-14 2015-09-02 中国重汽集团济南动力有限公司 一种空气辅助式scr尿素喷射系统
CN105019987A (zh) * 2015-08-03 2015-11-04 包头北大工道发动机技术有限公司 车载尿素溶液计量雾化供给装置
CN205243599U (zh) * 2015-12-31 2016-05-18 天纳克（苏州）排放系统有限公司 尿素喷嘴
CN205297701U (zh) * 2015-12-31 2016-06-08 天纳克（苏州）排放系统有限公司 尿素喷射组件

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028826A1 (ja) * 2003-09-19 2005-03-31 Nissan Diesel Motor Co., Ltd. エンジンの排気浄化装置
EP1676986A1 (en) * 2003-09-30 2006-07-05 Nissan Diesel Motor Co., Ltd. Exhaust gas purification device and exhaust gas purification method for engine
CN101806238A (zh) * 2010-03-13 2010-08-18 中国第一汽车集团公司 一种泵动力的空气辅助雾化尿素还原剂喷射控制系统
CN204457961U (zh) * 2015-01-04 2015-07-08 中国汽车工程研究院股份有限公司 一种用于尿素水溶液精确计量的喷射装置
CN204609994U (zh) * 2015-05-14 2015-09-02 中国重汽集团济南动力有限公司 一种空气辅助式scr尿素喷射系统
CN105019987A (zh) * 2015-08-03 2015-11-04 包头北大工道发动机技术有限公司 车载尿素溶液计量雾化供给装置
CN205243599U (zh) * 2015-12-31 2016-05-18 天纳克（苏州）排放系统有限公司 尿素喷嘴
CN205297701U (zh) * 2015-12-31 2016-06-08 天纳克（苏州）排放系统有限公司 尿素喷射组件

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