The invention discloses a protective mechanism for the transition section of bottom-blown waste heat boiler. The bottom of the back wall of the water-cooling wall in the transition section is provided with U-shaped bending protective steel plate. The U-shaped bending protective steel plate includes the inner protection part, the bending part and the outer protection part. The bending part is connected with the bottom of the inner protection part and the outer protection part. The inner protection part is located on the inner side of the back wall of the water-cooling wall in the transition section and the outer protection part. The bending part is located on the outer side of the back wall of the water-cooled wall in the transition section. The bending part bends from the connecting end of the inner retaining part to the bottom of the back wall of the water-cooled wall in the transition section, and obliquely moves upward to the bottom of the outer retaining part. The inner retaining part and the outer retaining part of the U-shaped bending steel plate are respectively fixed to the back wall of the water-cooled wall in the transition section. The advantages of the invention are that the inner retaining part can effectively alleviate the scouring effect of dust and smoke on the back wall of the water-cooled wall in the transition section, and the outer retaining part can effectively prevent the low temperature corrosion of the back-fired pipe wall caused by contacting cold air.
【技术实现步骤摘要】
底吹余热锅炉过渡段的防护机构
本专利技术涉及底吹余热锅炉
,具体涉及底吹余热锅炉过渡段。
技术介绍
底吹炉是一种常用的冶炼设备。底吹余热锅炉则是一种利用底吹炉排出的烟气余热的锅炉。底吹余热锅炉的烟气进口段位于底吹炉排烟口的正上方,底吹余热锅炉烟气进口段也称作为过渡段。底吹余热锅炉的过渡段,通常由四片水冷壁围成,四片水冷壁分别为过渡段水冷壁前墙、后墙、左墙、右墙。从底吹炉排出的高温烟气经由过渡段进入底吹余热锅炉中进行热交换。通常从底吹炉排出的烟气的温度高达1000℃左右,并且由于烟温不稳,底吹炉排出的高温烟气中常含有粉状或粒状的浮渣,高温烟气中的浮渣容易粘附在过渡段水冷壁上。久而久之,底吹炉转动过程中会撞击到粘附在过渡段水冷壁后墙上的炉渣,从而导致过渡段水冷壁后墙损坏,过渡段水冷壁后墙的换热管需要频繁更换。
技术实现思路
本专利技术需要解决的技术问题是:提供一种能提高过渡段水冷壁使用寿命的底吹余热锅炉过渡段的防护机构。为解决上述问题,本专利技术采用的技术方案是:底吹余热锅炉过渡段的防护机构,所述的过渡段位于底吹炉的上方,过渡段由四片水冷壁围成,四片水冷壁分别为过渡段水冷壁前墙、后墙、左墙、右墙,过渡段水冷壁后墙的底部设置有U形折弯防护钢板,U形折弯防护钢板包括内侧护挡部、弯折部和外侧护挡部,所述的弯折部连接在内侧护挡部和外侧护挡部的底部,所述的内侧护挡部位于过渡段水冷壁后墙的内侧,外侧护挡部位于过渡段水冷壁后墙的外侧,弯折部从与内侧护挡部的连接端弯折绕过过渡段水冷壁后墙的底部后倾斜向上与外侧护挡部的底部相连接;U形折弯防护钢板的内侧护挡部和外侧护挡部分别与 ...
【技术保护点】
1.底吹余热锅炉过渡段的防护机构,所述的过渡段位于底吹炉的上方,过渡段由四片水冷壁围成,四片水冷壁分别为过渡段水冷壁前墙、后墙、左墙、右墙,其特征在于:过渡段水冷壁后墙的底部设置有U形折弯防护钢板,U形折弯防护钢板包括内侧护挡部、弯折部和外侧护挡部,所述的弯折部连接在内侧护挡部和外侧护挡部的底部,所述的内侧护挡部位于过渡段水冷壁后墙的内侧,外侧护挡部位于过渡段水冷壁后墙的外侧,弯折部从与内侧护挡部的连接端弯折绕过过渡段水冷壁后墙的底部后倾斜向上与外侧护挡部的底部相连接;U形折弯防护钢板的内侧护挡部和外侧护挡部分别与过渡段水冷壁后墙相固定。
【技术特征摘要】
1.底吹余热锅炉过渡段的防护机构,所述的过渡段位于底吹炉的上方,过渡段由四片水冷壁围成,四片水冷壁分别为过渡段水冷壁前墙、后墙、左墙、右墙,其特征在于:过渡段水冷壁后墙的底部设置有U形折弯防护钢板,U形折弯防护钢板包括内侧护挡部、弯折部和外侧护挡部,所述的弯折部连接在内侧护挡部和外侧护挡部的底部,所述的内侧护挡部位于过渡段水冷壁后墙的内侧,外侧护挡部位于过渡段水冷壁后墙的外侧,弯折部从与内侧护挡部的连接端弯折绕过过渡段水冷壁后墙的底部后倾斜向上与外侧护挡部的底部相连接;U形折弯防护钢板的内侧护挡部和外侧护挡部分别与过渡段水冷壁后墙相固定。2.根据权利要求1所述的底吹余热锅炉过渡段的防护机构,其特征在于:U形折弯防护钢板的内侧护挡部贴合于过渡段水冷壁后墙的内壁设置,内侧护挡部的顶部焊接固定有内侧梳形板,内侧梳形板与过渡段水冷壁后墙...
【专利技术属性】
技术研发人员:陶春红,朱建云,朱丹萍,蒋东,
申请(专利权)人:苏州海陆重工股份有限公司,
类型:发明
国别省市:江苏,32
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