The utility model discloses a high temperature alloy through wall casing for CFB boiler, the bottom of the through wall casing is provided with a fixed flange, and the upper part of the fixed flange is connected with a round diameter casing; the round diameter casing is a cylindrical hollow structure with uniform wall thickness, the upper part of the round diameter casing is processed into a flat diameter through buried water wall wear-resistant and high temperature resistant casing, and the wall thickness of the flat diameter through buried water wall wear-resistant and high temperature resistant casing is uneven, and the flat diameter through buried water wall wear-resistant and high temperature resistant casing The inner wall of the embedded water wall wear-resistant and high temperature resistant casing is the inner chamber for thermocouple installation. The thickness of the thinnest part of the outer wall of the wear-resistant and high temperature resistant casing with flat diameter through the buried water wall is less than or equal to half of the wall thickness of the circular diameter casing. The thickness of the thinnest part of the outer wall of the wear-resistant and high temperature resistant casing with flat diameter through the buried water wall is one third of the wall thickness of the circular diameter casing. The interface between the circular diameter casing and the flat diameter water wall wear-resistant and high temperature resistant casing is arc-shaped. The length of wear-resistant and high temperature resistant casing with flat diameter through the buried water wall can be adjusted as required. The through wall casing has the advantages of high temperature resistance, easy through wall use and long service life.
【技术实现步骤摘要】
一种CFB锅炉用高温合金穿墙套管
本技术属于锅炉配件加工领域,具体涉及一种CFB锅炉用高温合金穿墙套管。
技术介绍
高温合金是指以铁、镍、钴为基,能在600℃以上的高温及一定应力作用下长期工作的一类金属材料;并具有较高的高温强度,良好的抗氧化和抗腐蚀性能,良好的疲劳性能、断裂韧性等综合性能。高温合金为单一奥氏体组织,在各种温度下具有良好的组织稳定性和使用可靠性。高温合金用于高温检测部件的保护作用部件,特别在CFB锅炉运行温度高,长期运行存在热电偶更换困难的问题,且在热电偶损坏后难抽出,更换时难插入。主要原因为原有穿墙套管为不锈钢或其他高温钢管制成,耐温低,在800℃以上长时间使用后产生蠕变,运行振动加剧热电偶变形,积灰严重进一步造成热电偶与穿墙套管抱死,检修更换时增加了劳动强度,浪费人力物力。
技术实现思路
本技术提供了一种CFB锅炉用高温合金穿墙套管,该设备的使用可以达到方便热电偶更换的目的。为实现上述目的,本技术提供如下技术方案:一种CFB锅炉用高温合金穿墙套管,所述穿墙套管底部设置有固定法兰,固定法兰上部连接有圆径套管;所述圆径套管为壁厚均匀的圆柱形中空结构,圆径套管上部加工为扁径穿埋水冷壁耐磨耐高温套管,扁径穿埋水冷壁耐磨耐高温套管壁厚不均匀,扁径穿埋水冷壁耐磨耐高温套管内壁为热电偶安装内腔。优选的,所述扁径穿埋水冷壁耐磨耐高温套管外壁最薄处厚度小于等于圆径套管壁厚的一半。优选的,所述扁径穿埋水冷壁耐磨耐高温套管外壁最薄处厚度为圆径套管壁厚的三分之一。优 ...
【技术保护点】
1.一种CFB锅炉用高温合金穿墙套管,其特征在于:所述穿墙套管底部设置有固定法兰(1),固定法兰上部连接有圆径套管(2);所述圆径套管为壁厚均匀的圆柱形中空结构,圆径套管上部加工为扁径穿埋水冷壁耐磨耐高温套管(3),扁径穿埋水冷壁耐磨耐高温套管壁厚不均匀,扁径穿埋水冷壁耐磨耐高温套管内壁为热电偶安装内腔(4)。/n
【技术特征摘要】
1.一种CFB锅炉用高温合金穿墙套管,其特征在于:所述穿墙套管底部设置有固定法兰(1),固定法兰上部连接有圆径套管(2);所述圆径套管为壁厚均匀的圆柱形中空结构,圆径套管上部加工为扁径穿埋水冷壁耐磨耐高温套管(3),扁径穿埋水冷壁耐磨耐高温套管壁厚不均匀,扁径穿埋水冷壁耐磨耐高温套管内壁为热电偶安装内腔(4)。
2.根据权利要求1所述的一种CFB锅炉用高温合金穿墙套管,其特征在于:所述扁径穿埋水冷壁耐磨耐高温套管(3)外壁最薄处厚度小于等于圆径套管(2)壁厚的一半。
3.根据权利要求1或2所述的一种CFB锅炉用高温合金穿墙套管,其...
【专利技术属性】
技术研发人员:张善学,李建军,
申请(专利权)人:烟台通用节能设备有限公司,
类型:新型
国别省市:山东;37
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