CN107131031A - 端进筒式scr封装进气端总成 - Google Patents

端进筒式scr封装进气端总成 Download PDF

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CN107131031A
CN107131031A CN201710516482.XA CN201710516482A CN107131031A CN 107131031 A CN107131031 A CN 107131031A CN 201710516482 A CN201710516482 A CN 201710516482A CN 107131031 A CN107131031 A CN 107131031A
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CN107131031B (zh
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陆国栋
周健伟
黎聪
沈彩琴
许庆锋
周小燕
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HANGZHOU YINLUN SCIENCE AND TECHNOLOGY Co Ltd
Zhejiang Yinlun Machinery Co Ltd
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Zhejiang Yinlun Machinery Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486—Means to prevent the substance from freezing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明提供了一种端进SCR封装进气端总成。包括：进气端盖，进气管，尿素喷嘴座，进气端筒体，多孔隔板。进气管从进气端盖上部水平进入，经90°折弯后，穿过多孔隔板进入由多孔隔板、进气端盖及进气端筒体所围成的混合腔。尿素喷嘴座位于进气端筒体上部，其穿过筒体外壳后向下落在进气管90°折弯处。多孔隔板可以采用90°折弯结构，其水平部分位于进气端盖中间或更高部位，多孔隔板还可以是一块不折弯多孔板，开孔特征与上述多孔隔板垂直部分一致。采用本发明的技术方案，结构紧凑、背压小、混合效果好、互换性强，不易形成尿素结晶。

Description

端进筒式SCR封装进气端总成
技术领域
本发明涉及汽车排气系统领域，更具体的说是涉及用于消除汽车排气中NOx的一种端进筒式SCR封装产品的进气端总成。
背景技术
随着排放升级以及车辆底盘布置越来越紧凑，后处理产品正朝着高效、紧凑方向发展。为适合排放法规要求日益加严、对安装空间越来越紧凑的要求，专门开发的一款端进筒式SCR封装进气端总成结构，该进气端总成集成了尿素喷嘴、混合结构，具有集成度高、高效、占空间小的特点，符合当前紧凑、高效的发展要求。
发明内容
现有产品通常进气端体积较大，尿素溶液喷入后混合效果不理想，尿素结晶现象经常发生，已难以适应排放升级后小空间、高效率、无尿素结晶的要求。
为解决上述问题，本发明采用的技术方案是：进气管采用在端盖上侧水平进入，经90°折弯后，向下伸入多孔隔板、进气端盖与进气端筒体围成的混合腔。本发明进气管采用水平端进及90°折弯，结构简单，占空间小。
本发明的方案如下：
一种端进筒式SCR封装进气端总成包括进气端盖、进气管、尿素喷嘴座、进气端筒体、多孔隔板；进气端盖、进气端筒体和多孔隔板围成混合腔，所述的进气管从进气端盖上部水平进入，接着向下90°折弯进入混合腔。
作为优选的方案，所述的多孔隔板为圆形多孔隔板或折角型多孔隔板，所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈设定角度的隔板；设定角度不限于90°。
进一步，当所述的多孔隔板为圆形多孔隔板时，所述的圆形多孔隔板垂直安装于进气端筒体内；所述的进气管经90°折弯后其出口位于进气端筒体中间位置。
更进一步，所述的多孔隔板包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm；多孔隔板所有开孔左右对称。
作为优选的方案，所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈直角的水平隔板，水平隔板位于进气端盖中间或稍高位置，进气端盖、进气端筒体和多孔隔板围成混合腔，所述的进气管从进气端盖上部水平进入，接着向下90°折弯，穿过多孔隔板的水平隔板后进入混合腔。
进一步的，所述进气管穿过多孔隔板的水平隔板进入混合腔后的伸入长度为5～20mm。
进一步的，所述的进气管在90°折弯下部位两侧对称各开一条形孔，孔宽不超过进气管周长的1/4，条形口上端不超过进气管水平中心线高度，下端距离多孔隔板的水平隔板5～10mm。
优选的，多孔隔板的水平隔板在进气管两侧各开一个大孔，多孔隔板所有开孔左右对称。
优选的，所述的水平隔板大孔的孔边距离周边部件5mm；垂直隔板包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm。
优选的，所述的尿素喷嘴座位于进气端筒体上部，穿过进气端筒体壳层后，向下开口于进气管折弯处，尿素喷嘴座可安装气助式或非气助式尿素喷嘴。
优选的，进气端盖及进气端筒体均采用双层保温结构。
本发明进气管在折弯后多孔隔板上方两侧开窗。尿素喷嘴布置在进气端总成封装上部，穿过双层筒壁后，在进气管折弯处进入进气管。进气管折弯后在其两侧各开一窗口，以降低背压。多孔隔板不局限于一种形式，对折弯结构，其水平部分可以高于进气端盖中线位置。多孔隔板还可以采用整块圆形多孔板结构形式。根据本发明，进气端盖及进气端筒体均采用双层保温结构，可减少进气温度的降低及尿素结经现象的发生。
附图说明
图1为筒式SCR封装进气端总成；
图2为筒式SCR封装进气端总成剖视图；
图3为进气端盖1的结构示意图；
图4为进气管2的结构示意图；
图5为进气端筒体4的结构示意图；
图6为多孔隔板5的结构示意图(a型)；
图7为多孔隔板5的结构示意图(b型)；
图8为多孔隔板5的结构示意图(c型)。
图中标记为：1、进气端盖；2、进气管；3、尿素喷嘴座；4、进气端筒体；5、多孔隔板；6、混合腔。
具体实施方式
下面对照附图，通过对实施例的描述，对本发明的具体实施方式，例如：各结构的形状、构造以及各部分之间的相互位置关系及连接关系、各部分的作用及工作原理等作进一步的详细说明：
如图1-3所示，一种端进筒式SCR封装进气端总成包括进气端盖1、进气管2、尿素喷嘴座3，进气端筒体4、多孔隔板5；进气端盖1、进气端筒体4和多孔隔板5围成混合腔6，所述的进气管2从进气端盖1上部水平进入，接着向下90°折弯进入混合腔6。进气管2进入进气端盖1的位置以进气端盖1中心偏上位置为宜。
作为优选的方案，所述的多孔隔板5为圆形多孔隔板或折角型多孔隔板，所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈设定角度的隔板。
如图8所示，作为本发明的一个可选方案，当所述的多孔隔板5为圆形多孔隔板时，所述的圆形多孔隔板垂直安装于进气端筒体4内；所述的进气管2经90°折弯后其出口位于进气端筒体4中间位置。
如图8所示，更进一步，所述的多孔隔板5包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm；多孔隔板5所有开孔左右对称。
如图6和7所示，所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈直角的水平隔板，水平隔板位于进气端盖1中间或稍高位置，进气端盖1、进气端筒体4和多孔隔板5围成混合腔6，所述的进气管2从进气端盖1上部水平进入，接着向下90°折弯，穿过多孔隔板5的水平隔板后进入混合腔6。
进一步的，所述进气管2穿过多孔隔板5的水平隔板进入混合腔6后的伸入长度为5～20mm。
如图4所示，所述的进气管2在90°折弯下部位两侧对称各开一条形孔，条形孔宽不超过进气管2周长的1/4，条形孔上端不超过进气管2水平中心线高度，下端距离多孔隔板5的水平隔板5～10mm。
如图6和7所示，多孔隔板5的水平隔板在进气管2两侧各开一个大孔，多孔隔板5所有开孔左右对称。
如图6和7所示，所述的水平隔板大孔的孔边距离周边部件5mm；垂直隔板包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm。
如图5所示，所述的尿素喷嘴座3位于进气端筒体4上部，穿过进气端筒体4壳层后，向下开口于进气管2折弯处，尿素喷嘴座可安装气助式或非气助式尿素喷嘴。
优选的，进气端盖及进气端筒体均采用双层保温结构。
采用本发明的技术方案，结构紧凑、背压小、混合效果好、互换性强，不易形成尿素结晶。
上述结合附图对本发明进行了示例性的描述，但本发明的具体实现并不受上述方式的限制。只要采用了本发明的构思和技术方案进行的各种非实质性的改进，或未经改进将本发明的构思和技术方案直接应用于其它场合的，均在本发明的保护范围之内。

Claims (10)

1.一种端进筒式SCR封装进气端总成，其特征在于包括进气端盖(1)、进气管(2)、尿素喷嘴座(3)，进气端筒体(4)、多孔隔板(5)；进气端盖(1)、进气端筒体(4)和多孔隔板(5)围成混合腔(6)，所述的进气管(2)从进气端盖(1)上部水平进入，接着向下90°折弯进入混合腔(6)；所述的尿素喷嘴座(3)位于进气端筒体(4)上部，穿过进气端筒体(4)壳层后，向下进入进气管(2)折弯处。
2.如权利1所述的端进筒式SCR封装进气端总成，其特征在于所述的多孔隔板(5)为圆形多孔隔板或折角型多孔隔板，所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈设定角度的隔板。
3.如权利2所述的端进筒式SCR封装进气端总成，其特征在于当所述的多孔隔板(5)为圆形多孔隔板时，所述的圆形多孔隔板垂直安装于进气端筒体(4)内；所述的进气管(2)经90°折弯后其出口位于进气端筒体(4)内部中间位置。
4.如权利3所述的端进筒式SCR封装进气端总成，其特征在于所述的多孔隔板(5)包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm；多孔隔板(5)所有开孔左右对称。
5.如权利1所述的端进筒式SCR封装进气端总成，其特征在于所述的折角型多孔隔板包括一竖直隔板和一与竖直隔板呈90度的水平隔板，水平隔板位于进气端盖(1)中间或稍高位置，进气端盖(1)、进气端筒体(4)和多孔隔板(5)围成混合腔(6)，所述的进气管(2)从进气端盖(1)上部水平进入，接着向下90°折弯，穿过多孔隔板(5)的水平隔板后进入混合腔(6)。
6.如权利5所述的端进筒式SCR封装进气端总成，其特征在于所述进气管(2)穿过多孔隔板(5)的水平隔板进入混合腔(6)后的伸入长度为5～20mm。
7.如权利5所述的端进筒式SCR封装进气端总成，其特征在于所述的进气管(2)在90°折弯下部位两侧对称各开一条形孔，条形孔宽不超过进气管(2)周长的1/4，条形口上端不超过进气管(2)水平中心线高度，条形孔下端距离多孔隔板(5)的水平隔板5～10mm。
8.如权利5或7所述的端进筒式SCR封装进气端总成，其特征在于多孔隔板(5)的水平隔板在进气管(2)两侧各开一个大孔，多孔隔板(5)所有开孔左右对称。
9.如权利8所述的端进筒式SCR封装进气端总成，其特征在于所述的水平隔板大孔的孔边距离周边部件5mm；垂直隔板包括三组竖直排列的开孔，其中中间的一组开孔采用顺排方式布置，孔径10mm；左右两组开孔采用错排孔布置，孔径15mm。
10.如权利1所述的端进筒式SCR封装进气端总成，其特征在于尿素喷嘴座安装气助式尿素喷嘴或非气助式尿素喷嘴。
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