The utility model discloses a water cold wall of a wear-resistant biomass boiler, which belongs to the auxiliary equipment field of the power plant boiler. The water-cooled wall of the wear resisting biomass boiler comprises a water wall tube, and some water wall tubes are arranged around the inner wall of the furnace chamber, and the outer wall of the water wall tube is provided with a spiral linear wear resistant strip. The outer wall of the water wall tube is also evenly equipped with a wear-resistant block. The shape of the wear-resistant block is semi ellipsoid, and the long axis of the semi ellipsoid wear-resisting block and the contact surface of the water wall tube is perpendicular to the middle axis of the water wall tube. The height of the wear-resistant strip on the outer wall of the water wall tube is greater than that of the wear-resistant block. The purpose of the utility model is to overcome the serious problem of the wear of the water wall tube of the existing biomass boiler, and provide a water-cooled wall for the biomass boiler, which solves the above problems to a certain extent.
【技术实现步骤摘要】
一种耐磨损生物质锅炉水冷壁
本技术涉及电厂锅炉附属设备领域,更具体地说,涉及一种耐磨损生物质锅炉水冷壁。
技术介绍
锅炉炉膛内侧铺设有由金属管道组成的水冷管壁,水冷管壁贴近燃烧室墙内壁,互相平行布置,上端与汽包或上联箱连接,下端与下联箱相连。水冷壁的作用是吸收炉膛中高温火焰或烟气的辐射热量,在管内产生蒸汽或热水,并降低炉墙温度,保护炉墙。锅炉炉膛内温度高、物料颗粒粗且风速快,水冷管壁容易磨损,且由于生物质锅炉的炉膛中积灰问题严重,因此水冷管壁磨损问题在生物质锅炉中表现尤为明显,管壁被冲刷磨损出现凹形槽坑,容易引发爆管事故,影响锅炉长周期安全运行,存在安全隐患。现有技术中主要采用增加水冷壁管壁厚度的方式来减缓水冷管壁的磨损问题,通过增大水冷壁管的壁厚,在一定程度上也能够延长水冷壁管的使用寿命,起到控制水冷壁磨损速度的作用,但是采用增加水冷壁管的设计壁厚的方式进行防磨处理后,会增加锅炉的制造成本,且使用该方式只是延长了水冷壁面的磨损时间,并不能起到更好的改善磨损的效果。现有技术中还公开了其他锅炉水冷壁管防磨结构,例如专利公开号:CN205065705U,公开日:2016年03月02日,专利技术创造名称为:一种锅炉水冷壁管防磨结构,该申请案公开一种锅炉水冷壁管防磨结构,其包括有炉体,炉体下部为燃烧室,燃烧室内两侧排布有多个水冷壁管,水冷壁管上靠近燃烧室中心一侧套装有截面为半圆形的防磨套管,水冷壁管两侧沿轴心线方向均匀成型有多个筋条,防磨套管两侧与筋条位置相对应处向内成型有卡扣结构,水冷壁管和防磨套管通过卡扣结构和筋条卡接。该申请案通过卡扣结构和筋条套装在水冷壁管 ...
【技术保护点】
一种耐磨损生物质锅炉水冷壁,包括水冷壁管(6),若干水冷壁管(6)安装在炉膛(1)的内壁周围,其特征在于:所述水冷壁管(6)的外壁上设有呈螺旋线形的耐磨条(602)。
【技术特征摘要】
1.一种耐磨损生物质锅炉水冷壁,包括水冷壁管(6),若干水冷壁管(6)安装在炉膛(1)的内壁周围,其特征在于:所述水冷壁管(6)的外壁上设有呈螺旋线形的耐磨条(602)。2.根据权利要求1所述的耐磨损生物质锅炉水冷壁,其特征在于:所述水冷壁管(6)的外壁上还均匀设有耐磨块(601)。3.根据权利要求2所述的耐磨损生物质锅炉水冷壁,其特征在于:所述耐磨块(601)的形状为半椭球形,该半椭球形的耐磨块(601)与所述水冷壁管(6)外壁的接触面的长轴所在直线与所述水冷壁管(6)的中轴线垂直。4.根据权利要求3所述的耐磨损生物质锅炉水冷壁,其特征在于:所述耐磨条(602)在水冷壁管(...
【专利技术属性】
技术研发人员:蒙春燕,孙光辉,马宁,
申请(专利权)人:大唐邓州生物质能热电有限责任公司,
类型:新型
国别省市:河南,41
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。