The invention relates to a SCR post-processing cylinder body, in particular to a connecting sealing device for the SCR post-processing cylinder body, which belongs to the technical field of diesel exhaust treatment system. It includes a DOC cylinder and a DPF cylinder. The DOC cylinder connects one end of the DPF cylinder with an outer flanging section, the outer flanging section is sleeved on the DPF cylinder, and the outer flanging section is tightly attached to one side surface of the hump tube. The outer flanging section is folded from the inner ring of the cylinder to the outer ring of the hump tube, and the outer ring of the outer flanging section and the hump tube is provided with a holding hoop, which is located on the inner end surface of the DPF cylinder and pressed on the surface of the hump tube. The hoop is located on the inner end face of one side of the DOC cylinder, and the flanging section is pressed on the surface of the hump pipe. The invention has the advantages of simple structure, compactness and rationality, good sealing performance at the connecting position of the cylinder body and quick and convenient disassembly.
【技术实现步骤摘要】
SCR后处理筒体连接密封装置
本专利技术涉及一种SCR后处理筒体,具体的说是SCR后处理筒体连接密封装置,属于柴油机尾气处理系统
技术介绍
随着柴油机排放法规的日益严格,尾气后处理技术是必须采用的技术措施。而SCR尾气处理设备为了满足国Ⅵ排放需求必须连接DPF尾气处理筒体,DPF尾气处理筒体的基本原理是通过特殊的结构设计来捕集汽车尾气中的碳颗粒,需要定期再生。DPF尾气处理筒体为了满足被动再生需求,就需要将筒体设计成可拆卸连接结构,该连接结构拆卸组装之后又有较高的气密性要求。现有技术中,有的后处理筒体连接结构为了保证较高的气密性要求导致拆卸不方便,有的后处理筒体连接结构为了保证拆卸方便又影响了密封性能。
技术实现思路
本专利技术的目的在于克服上述不足之处,从而提供一种SCR后处理筒体连接密封装置,能够在保证筒体连接位置密封性能良好,又能够快捷方便的实现拆卸。按照本专利技术提供的技术方案,SCR后处理筒体连接密封装置包括DOC筒体和DPF筒体,其特征是:DPF筒体外表面焊接一圈驼峰管,驼峰管位于DPF筒体连接DOC筒体一端管口位置处;所述DOC筒体连接DPF筒体一端管口设有外翻边段,外翻边段套接在DPF筒体上,并且外翻边段紧贴在驼峰管一侧表面,外翻边段由筒体内圈向筒体外圈方向翻折;所述外翻边段和驼峰管外圈设有抱箍,抱箍位于DPF筒体一侧内端面压紧在驼峰管表面,抱箍位于DOC筒体一侧内端面将外翻边段压紧在驼峰管表面。进一步的,驼峰管的驼峰高度H为5~50mm,驼峰扩口角度γ为90°~150°,驼峰管缩口段与扩口段夹角β为0°~90°。进一步的,DOC筒体 ...
【技术保护点】
1.一种SCR后处理筒体连接密封装置,包括DOC筒体(1)和DPF筒体(2),其特征是:DPF筒体(2)外表面焊接一圈驼峰管(4),驼峰管(4)位于DPF筒体(2)连接DOC筒体(1)一端管口位置处;所述DOC筒体(1)连接DPF筒体(2)一端管口设有外翻边段(6),外翻边段(6)套接在DPF筒体(2)上,并且外翻边段(6)紧贴在驼峰管(4)一侧表面,外翻边段(6)由筒体内圈向筒体外圈方向翻折;所述外翻边段(6)和驼峰管(4)外圈设有抱箍(3),抱箍(3)位于DPF筒体(2)一侧内端面压紧在驼峰管(4)表面,抱箍(3)位于DOC筒体(1)一侧内端面将外翻边段(6)压紧在驼峰管(4)表面。
【技术特征摘要】
1.一种SCR后处理筒体连接密封装置,包括DOC筒体(1)和DPF筒体(2),其特征是:DPF筒体(2)外表面焊接一圈驼峰管(4),驼峰管(4)位于DPF筒体(2)连接DOC筒体(1)一端管口位置处;所述DOC筒体(1)连接DPF筒体(2)一端管口设有外翻边段(6),外翻边段(6)套接在DPF筒体(2)上,并且外翻边段(6)紧贴在驼峰管(4)一侧表面,外翻边段(6)由筒体内圈向筒体外圈方向翻折;所述外翻边段(6)和驼峰管(4)外圈设有抱箍(3),抱箍(3)位于DPF筒体(2)一侧内端面压紧在驼峰管(4)表面,抱箍(3)位于DOC筒体(1)一侧内端面将外翻边段(6)压紧在驼峰管(4)表面。2.如权利要求...
【专利技术属性】
技术研发人员:郭一博,曲洪亮,徐浩兴,林浩健,徐超,徐文清,胡忠斌,胡婷,郑天峰,吴杰,曾德智,
申请(专利权)人:无锡威孚力达催化净化器有限责任公司,
类型:发明
国别省市:江苏,32
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