CN103228335B - 在废气后处理或消音设备中安装多层絮垫、绒垫或衬垫的方法 - Google Patents
在废气后处理或消音设备中安装多层絮垫、绒垫或衬垫的方法 Download PDFInfo
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Abstract
提供了一种用于在废气后处理或消音设备中安装多层衬垫(24)的方法。所述方法包括以下步骤:围绕设备的内表面沿着同一个平面缠绕衬垫(24)以围绕内表面至少完整地缠绕一周;随后围绕已经完成的缠绕层来缠绕衬垫(24)以使衬垫(24)的每一后续缠绕层都从先前缠绕层的平面偏移恒定的距离;衬垫(24)的最终缠绕,其中衬垫被沿着最终平面缠绕以围绕催化剂至少完整地缠绕一周;并且在缠绕步骤之后将衬垫(24)安装在设备(18)内。
Description
相关申请的交叉引用
本申请要求2010年9月30日提交的申请号为12/894,712的美国专利申请提交日的权益,因此通过引用将其并入。
联邦资助研发声明
不适用。
缩微胶片
/
版权参考
不适用。
技术领域
本发明涉及废气后处理和/或消音系统以及在其中使用的利用隔热绒垫、絮垫和衬垫的设备。
背景技术
在废气系统中使用絮垫、绒垫和/或衬垫的目的是为了提供用于系统中消音和后处理设备的隔热和/或弹性安装结构以控制与设备之间的热交换和/或提供用于设备内芯或其他脆弱构件的保护性安装。已知在此类设备的相邻壁面之间设置这样的絮垫/绒垫/衬垫并压缩絮垫/绒垫/衬垫的材料以为材料提供所需的安装密度,从而通过絮垫/绒垫/衬垫和相邻壁面之间的摩擦力帮助将絮垫/绒垫/衬垫保持在安装位置。通常,相邻壁面由设备的内芯或其他内部构件以及围绕内芯或其他内部构件的罐体或壳体界定,其中絮垫/绒垫/衬垫被夹在内芯/内部构件和罐体/壳体之间。
通常,絮垫/绒垫/衬垫被围绕内芯/内部构件缠绕并且通过将已缠绕的内芯/内部构件强行压入罐体/壳体内来安装罐体/壳体,由此造成絮垫/绒垫/衬垫被夹在内芯/内部构件和罐体/壳体的相邻壁面之间。在安装过程期间,将絮垫/绒垫/衬垫固定在安装位置的摩擦力经常会促使絮垫/绒垫/衬垫的末端移位从而在絮垫/绒垫/衬垫的末端造成絮垫/绒垫/衬垫有不受支撑的角部。另外,在安装过程期间,将絮垫/绒垫/衬垫固定在安装位置的摩擦力经常会促使絮垫/绒垫/衬垫的边缘移位,以使絮垫/绒垫/衬垫的边缘不受支撑,这可能会使絮垫/绒垫/衬垫容易受到高温气体的侵蚀。
发明内容
根据本发明的一方面,提供了一种用于在具有两个相邻表面的废气后处理或消音设备中安装衬垫的方法。所述方法包括以下步骤:围绕两个相邻表面之一沿着同一个平面缠绕衬垫以围绕两个相邻表面之一至少完整地缠绕一周;随后围绕两个相邻表面之一伸缩地缠绕衬垫以使衬垫的每一后续缠绕层都从先前缠绕层的平面偏移一定距离;缠绕衬垫的最终缠绕层,其中衬垫被沿着基本平行于第一步骤中平面的平面缠绕以围绕内芯至少完整地缠绕一周;将衬垫压缩在设备的两个相邻表面之间;其中压缩步骤包括在偏移缠绕层相对于两个相邻表面中的另一个平移时对齐衬垫的偏移缠绕层。
根据一方面,安装方法包括安装衬垫以使衬垫被压缩在设备的两个相邻表面之间从而实现所需的预定衬垫轮廓。
根据一方面,初始安装步骤包括在围绕设备的纵向轴线缠绕衬垫时将缠绕层相对于设备的内表面保持在恒定位置。
根据一方面,后续安装步骤包括在围绕设备的纵向轴线缠绕衬垫时将衬垫从先前缠绕层的边缘偏移一段恒定的距离以围绕纵向轴线伸缩地缠绕衬垫。
根据一方面,后续安装步骤包括在围绕纵向轴线缠绕衬垫时将缠绕层相对于设备的内表面保持在恒定位置。
根据本发明的一方面,提供了一种用于在具有内表面和外表面的废气后处理或消音设备中安装衬垫的方法。所述方法包括以下步骤:围绕设备的纵向轴线缠绕衬垫以使衬垫沿纵向轴线保持在恒定的纵向位置;随后围绕设备的纵向轴线伸缩地缠绕衬垫以使衬垫的每一后续缠绕层都从先前缠绕层纵向偏移;然后围绕设备的纵向轴线缠绕衬垫以使衬垫沿纵向轴线保持在恒定的纵向位置;在设备的内表面和外表面之间压缩衬垫。
附图说明
图1是使用本发明的废气系统的示意图;
图2是从图1中的2-2线截取的使用本发明的废气系统构件的截面图;
图3是根据本发明的废气系统在缠绕衬垫时的侧面正视图;
图4是根据本发明图3中的废气系统构件和衬垫的一圈完整缠绕层顶部俯视图;
图5是根据本发明的废气系统构件和衬垫随后偏移缠绕层的侧面正视图;
图6是图5中的废气系统构件和随后偏移缠绕层的顶部俯视图;
图7是根据本发明的废气系统构件在衬垫已经完全缠绕后的侧面正视图;
图8是根据本发明在图7中的废气系统构件在衬垫已经完全缠绕后的顶部俯视图;
图9是根据本发明在图8中的废气系统构件在衬垫已经完全缠绕后的纵向截面图;
图10是根据本发明的废气系统构件在安装罐体/壳体时的侧面正视图;以及
图11是根据本发明的废气系统构件在安装罐体/壳体后的纵向截面图。
具体实施方式
图1中示出了形式为柴油废气后处理系统的废气系统10,用于处理来自柴油燃烧过程14例如柴油压燃发动机16的废气12。废气12通常包含有氮氧化物(NOx)例如一氧化氮(NO)和二氧化氮(NO2)等、颗粒物(PM)、烃类、一氧化碳(CO)和其他的燃烧副产物。系统10包括一个或多个废气消音和/或后处理设备或构件18。此类设备18的示例包括催化转换器、柴油氧化催化剂、柴油颗粒物过滤器、气体颗粒物过滤器、稀燃NOx捕集器、选择性催化还原体、燃烧器、歧管、连接管、消音器、谐振器、尾管、排放控制系统封箱、隔热环、隔热端锥、隔热端帽、隔热进气管和隔热排气管,所有这些示例都是任意的截面几何形状,其中有很多种都是已知的。本领域技术人员应该意识到部分上述设备18严格地是具有废气12由其流过的中央内芯19的金属构件,并且另一些设备18可以包括形式为陶瓷整体结构和/或网状金属结构的废气12由其流过的内芯19。这些设备18通常在(柴油或汽油)机动车、施工设备、(柴油或汽油)机车发动机应用、(柴油或汽油)船舶发动机应用、(柴油或汽油)小型内燃机和(柴油或汽油)固定式发电机中使用。
图2示出了用于在系统10中使用的形式为催化单元20的此类设备18的示例,包括具有外表面23的催化内芯22、装配衬垫24、具有内表面27的柱状内壳体或罐体26、隔热绒垫或絮垫28以及柱状外壳体或套管30。内芯22通常是包括整体式结构的其上涂覆催化剂的陶瓷衬底32,并且通常具有以纵向轴线33为中心的椭圆形、圆形或其他非圆形的截面,其中壳体构件26和30也是柱状的形状并且以轴线33为中心。装配衬垫24被夹在内芯22的外表面23和罐体26的内表面27之间以帮助保护内芯22免受可能从罐体26传输至内芯22的冲击力和振动力的影响。
隔热絮垫28由硅纤维隔热材料制成。此类材料是已知且市场上可购得的,其中一种合适的示例由BGF工业公司以SilcoSoft®的商标名提供,而另一种合适的示例由ASGLAWO泰尼飞公司以Asglasil®的商标名提供。此类材料通常成卷提供,其中在从卷筒上获取材料之后将个体絮垫28模切为用于对应设备18的适当长度和宽度。优选地,絮垫28被夹在或压缩在罐体26的外表面36和壳体30的内表面38之间的环形间隙34内。这就在絮垫28与表面36和38之间提供了充分的摩擦接合以将絮垫28适当地保持在其需要的位置。应该意识到尽管絮垫28被图示为压缩在柱状罐体26和壳体30之间的环形间隙34内,但是絮垫28也可以被压缩在设备的其他相邻表面之间,包括例如一对相邻的平面,一对相邻的非平面,一对相邻的锥面或者能够在用于废气系统的消音或后处理设备中找到的任何其他的成对相邻表面。
通常装配衬垫24由耐热和减震材料制成例如玻璃纤维或石棉构成的衬垫。此类材料通常成卷提供,其中在从卷筒上获取材料之后将个体装配衬垫24割开并接着切分为用于对应设备18的适当长度和宽度以确定横向间隔开的侧边48,50。侧边48和50界定衬垫24的展开面53。优选地,装配衬垫24被压缩在罐体26的内表面27和内芯22的外表面23之间,目的是为了通过与相邻表面23和27的摩擦接合而生成所需的保持力。
参照图3和图4,根据本发明,安装装配衬垫24的第一步骤包括围绕内芯22的纵向轴线33缠绕衬垫24以使衬垫24沿纵向轴线33保持在恒定的纵向位置以围绕内芯22至少完整地缠绕一周,从而允许将衬垫24平整地设置和固定在内芯22的外表面23上。该第一层缠绕层42通过围绕内芯22的外表面33横向于纵向轴线33缠绕衬垫24来实现,以使衬垫24被沿着(由虚线43示出的)平面缠绕并且相对于内芯22处于恒定位置,其中衬垫24的边缘48,50垂直于纵向轴线33。图3和图4示出了围绕内芯22的外表面33卷绕衬垫的第一步骤之后的装配衬垫24。
参照图5和图6,在第一缠绕层之后,衬垫24随后被围绕纵向轴线33伸缩地缠绕以使衬垫24的每一后续缠绕层44都从先前缠绕层44的平面偏移预定的距离40。如图5和图6所示,本实施例包含有三层后续的缠绕层44。应该意识到装配衬垫24的结构性质使其挠性足以实现如上所述伸缩地安装衬垫24的相关挠曲。偏移距离40根据设备10的所需参数确定以使得一旦如下所述装好罐体26后每一缠绕层44中装配衬垫24的边缘48和50都在同一平面内对齐。
参照图7和图8,装配衬垫24的最终外缠绕层46包括一旦如下所述安装罐体26后就围绕纵向轴线33缠绕衬垫24以使衬垫24沿纵向轴线33保持在恒定的纵向位置以围绕内芯22至少完整地缠绕一周,从而允许将衬垫24平整地设置和固定在罐体26的内表面27上。最终缠绕层46通过围绕衬垫24的先前缠绕层44横向于纵向轴线33缠绕衬垫24来实现,以使衬垫24被沿着平行于平面43的平面缠绕。
图9示出了内芯22和衬垫24在装入罐体26(未示出)内之前的剖视图。优选地,衬垫24的边缘48,50被以预定的角度51斜切或切割以使得一旦如下所述将衬垫装入罐体26之后衬垫24的边缘48,50就能基本为平面且垂直于轴线33。角51可以根据具体的系统参数和用途例如具体的衬垫材料、衬垫材料的厚度、衬垫缠绕层的层数和所需的衬垫安装密度来确定。尽管斜切的边缘是优选的,但是在某些应用中也可能需要放弃斜切并保留与衬垫24的展开面相符的边缘48,50。
参照图10和图11,一旦已经根据本发明将装配衬垫24围绕内芯22缠绕,那么装配衬垫24优选地就被夹在或压缩在内芯22的外表面23和罐体26的内表面27之间。通常都是通过如箭头52,54所示将一段装配衬垫24和内芯22强行压入罐体26内以将装配衬垫24和内芯22强行压入罐体26内,从而在装配衬垫24和罐体26之间造成摩擦配合,由此来安装装配衬垫24。
在此过程期间,装配衬垫24由于罐体26是在装配衬垫24上推送而并未伸缩,从而允许装配衬垫24在内芯22上的滑动一致。如图10所示,这就导致装配衬垫24被平整地安装在内芯22上方的同一平面上而不会有过多的装配衬垫24材料沿轴向在装配衬垫24的边缘48,50上松散和垂下。另外,在安装过程期间,侧边48,50的角度51被消除以使侧边48,50的整个组合沿卷绕的衬垫24的整个半径都基本为平面。
为了进行说明,如图3-10所示的内芯22以及如图10所示的罐体26均被示出为延伸超过衬垫24的边缘48,50。应该理解内芯22和罐体26各自的长度可以有所不同并且应该由独立的应用确定。
应该意识到尽管装配衬垫24被图示为压缩在柱状罐体26和壳体22之间,但是装配衬垫24也可以被压缩在设备的其他相邻表面之间,包括例如一对相邻的平面,一对相邻的非平面,一对相邻的锥面或者能够在用于废气系统的消音或后处理设备中找到的任何其他的成对相邻表面。另外,应该理解如本文中所用和权利要求中所述的装配衬垫24的相关所述步骤可以等价地应用于在消音或后处理设备中安装絮垫、绒垫或其他类似装置例如絮垫28。而且,应该理解术语絮垫、绒垫和衬垫在本文中可互换使用,其中术语“衬垫”应被认为包括了“絮垫”或“绒垫”。
还应该意识到尽管本文已经结合形式为柴油压燃发动机16的柴油燃烧过程介绍了本发明,但是本发明也可以在用于其他类型燃烧过程的废气系统内使用的设备中获得应用,包括其他类型的内燃机,例如包括使用汽油或其他可选燃料的内燃机。
Claims (11)
1.一种在具有两个相邻表面的废气后处理或消音设备中安装衬垫的方法,所述方法包括以下步骤:
围绕两个相邻表面之一沿着同一个平面缠绕衬垫以围绕两个相邻表面之一至少完整地缠绕一周;
随后围绕两个相邻表面之一伸缩地缠绕衬垫以使衬垫的每一后续缠绕层都从先前缠绕层的平面偏移一定距离;
缠绕衬垫的最终缠绕层,其中衬垫被沿着基本平行于第一步骤中平面的平面缠绕以围绕两个相邻表面之一至少完整地缠绕一周;
将衬垫压缩在设备的两个相邻表面之间;
其中压缩步骤包括在偏移缠绕层相对于两个相邻表面平移时对齐衬垫的偏移缠绕层。
2.如权利要求1所述的方法,其中两个相邻表面之一由设备的内芯界定,并且两个相邻表面中的另一个由设备的壳体界定。
3.如权利要求2所述的方法,其中初始缠绕步骤和最终缠绕步骤包括围绕内芯360度至370度地缠绕衬垫。
4.如权利要求1所述的方法,其中两个相邻表面是柱面。
5.如权利要求1所述的方法,其中第一缠绕层和最终缠绕层中的衬垫基本平行于两个相邻表面之一的边缘。
6.一种在具有两个相邻表面的废气后处理或消音设备中安装衬垫的方法,所述方法包括以下步骤:
安装衬垫以使衬垫围绕设备中的两个相邻表面之一以围绕两个相邻表面之一至少完整地缠绕一周,其中衬垫沿着同一个平面围绕两个相邻表面之一;
随后围绕两个相邻表面之一缠绕衬垫以使衬垫的每一后续缠绕层都更加偏离第一缠绕层;
最终缠绕衬垫,其中衬垫被沿着基本平行于第一缠绕层平面的平面缠绕;
将衬垫压缩在设备的两个相邻表面之间,
其中压缩步骤包括在偏移缠绕层相对于两个相邻表面平移时对齐衬垫的偏移缠绕层。
7.如权利要求6所述的方法,其中两个相邻表面之一由设备的内芯界定,并且两个相邻表面中的另一个由设备的壳体界定。
8.如权利要求7所述的方法,其中初始缠绕和最终缠绕包括围绕内芯360度至370度地缠绕衬垫。
9.一种在具有内表面和外表面的废气后处理或消音设备中安装衬垫的方法,所述方法包括以下步骤:
围绕设备的纵向轴线缠绕衬垫以使衬垫沿纵向轴线保持在恒定的纵向位置;
随后围绕设备的纵向轴线伸缩地缠绕衬垫以使衬垫的每一后续缠绕层都从先前缠绕层纵向偏移;
然后围绕设备的纵向轴线缠绕衬垫以使衬垫沿纵向轴线保持在恒定的纵向位置;
将衬垫压缩在设备的内表面和外表面之间,
其中压缩步骤包括在衬垫相对于内表面和外表面平移时对齐衬垫的偏移缠绕层。
10.如权利要求9所述的方法,其中初始缠绕步骤和最终缠绕步骤包括围绕设备的纵向轴线360度至370度地缠绕衬垫。
11.如权利要求9所述的方法,其中内表面和外表面是柱面。
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US12/894,712 US8752290B2 (en) | 2010-09-30 | 2010-09-30 | Method of installing a longitudinally offset multi-layer mat in an exhaust gas aftertreatment or acoustic device |
US12/894712 | 2010-09-30 | ||
PCT/US2011/038142 WO2012044375A1 (en) | 2010-09-30 | 2011-05-26 | Method of installing a multi-layer batt, blanket or mat in an exhaust gas aftertreatment or acoustic device |
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WO2016182806A1 (en) | 2015-05-08 | 2016-11-17 | Corning Incorporated | Housing, fluid stream treatment article, exhaust system and methods of manufacturing same |
CN113787147B (zh) * | 2021-11-16 | 2022-02-11 | 四川富美达微电子有限公司 | 一种引线框架输送冲裁装置 |
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