A WNS boiler with water-cooled jacket composite rear tube sheet consists of a cylindrical shell, a furnace gallbladder and a reburning chamber cylinder connected with the furnace gallbladder and the reburning chamber cylinder. The rear part of the reburning chamber cylinder is not closed. A large hole with the same diameter as the cylinder of the reburning chamber is opened on the back tube plate of the cylindrical shell. The back tube plate of the reburning chamber is welded directly with the back tube plate of the cylindrical shell, and a water-cooled clamp is installed on the back tube plate of the cylindrical shell. Set. Compared with the existing technology, the invention cancels the original back tube plate of the reburning chamber, opens a large hole on the back tube plate of the shell, which is the same as the diameter of the reburning chamber. The cylinder body of the reburning chamber is welded directly with the back tube plate of the shell. Thus, the difficulty of the construction of the smoke pipe in the high temperature zone of the former front tube plate of the reburning chamber can be solved directly, so that the expansion and welding of this part can adopt automatic expansion technology and automation. Welding technology. The use of water-cooled jacket not only avoids the dry back structure, but also changes the traditional WNS boiler assembly process, shortens the production cycle and improves the production efficiency. At the same time, the adoption of the new structure is more conducive to the cost control of the boiler when using low nitrogen combustion technology.
【技术实现步骤摘要】
一种采用水冷夹套复合型后管板的WNS型锅炉
本专利技术涉及一种WNS型锅炉,具体涉及一种采用水冷夹套复合型后管板的WNS型锅炉。
技术介绍
WNS型燃油气锅炉作为小型燃油气锅炉(1-20吨/时)的主力炉型,凭借其炉型具有炉体紧凑、占地面积小、升压快等优点,一直是工业锅炉的主力军,特别是在国家节能减排的大形势下,近年来WNS型燃油气锅炉已经占领油气炉市场的80%以上,其主力炉型为带内部回燃室的湿背式锅炉(附图1-2,即GB/T16508-2013《锅壳锅炉》附图1),和半湿背式锅炉的设计(附图3-4,即GB/T16508-2013《锅壳锅炉》附图3),占2~25吨/时WNS锅炉的95%以上。但这型锅炉因结构复杂、紧凑受无损检测环节的制约制造周期比较长,也存在一些质量隐患。一般在运行一段时间后,其回燃室前管板区域烟管角焊缝会出现漏水甚至孔桥出现裂纹,特别是热水锅炉,多数在运行2到3个采暖季就会出现问题。WNS型锅炉出现前管板的焊接质量问题,其技术原因在于回燃室前管板区域高温区烟管未按照标准要求进行贴胀或者贴胀不到位未完全消除间隙。实际操作中,由于回燃室前管板胀接、焊接等均在回燃室内进行,一般WNS锅炉的回燃室高度在1米到1.5米之间,前后距离在0.5米到0.8米之间,操作空间狭小,无法使用电动胀管器和自动焊机,手工操作工人劳动强度大,施工难度大,难以达到理想的效果。
技术实现思路
为解决上述问题,本专利技术提供一种采用水冷夹套复合型后管板的WNS型锅炉。本专利技术的技术方案具体为:一种采用水冷夹套复合型后管板的WNS型锅炉,包括筒形壳体、炉胆、回燃室筒体,炉胆和回 ...
【技术保护点】
1.一种采用水冷夹套复合型后管板的WNS型锅炉,包括筒形壳体、炉胆、回燃室筒体,其特征在于:炉胆和回燃室筒体连通,回燃室筒体后部不封闭,在筒形壳体后管板上开出一个与回燃室筒体直径一样的大孔,回燃室筒体直接与筒形壳体后管板焊接,在筒形壳体后管板安装水冷夹套。
【技术特征摘要】
1.一种采用水冷夹套复合型后管板的WNS型锅炉,包括筒形壳体、炉胆、回燃室筒体,其特征在于:炉胆和回燃室筒体连通,回燃室筒体后部不封闭,在筒形壳体后管板上开出一个与回燃室筒体直径一样的大孔,回燃室筒体直接与筒形壳体后管板焊接,在筒形壳体后管板安装水冷夹套。2.如权利要求1所述的一种采用水冷夹套复合型后管板的WNS型锅炉,其特征在于:水冷夹套内设置多个结构拉撑。3.如权利要求1所述的一种采用水冷夹套复合型后管板的WNS型锅炉,其特征在于:水冷夹套上设置检查孔。4.如权利要求1所述的一种采用水冷夹套复合型后管板的WNS型锅炉,其特征在于:水源从进水口进入水冷夹套,水冷夹套热水从上部出水口排入回水箱。5.如权利要求1所述的一...
【专利技术属性】
技术研发人员:焦武军,杨彦辉,张德卯,李世庆,张亮臣,周黎,
申请(专利权)人:焦武军,
类型:发明
国别省市:河南,41
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