王智磊,祝建,何江飞
WANG Zhilei,ZHU Jian,HE Jiangfei

• 1:中国能源建设集团浙江省电力设计院有限公司

摘要(Abstract)：

燃煤发电厂中作为储煤结构的钢煤斗,在运行温度高、堆煤高度高的工况下,沿用常规采用的煤斗内衬设计方式可能存在安全隐患,在温度作用下煤斗内衬产生起拱现象。结合规范公式和数值模型分析了内衬起拱时,塞焊点承受的贮料切向力、起拱积煤重力和温度的共同作用,并结合某工程案例进行了计算。在此基础上,提出了增大塞焊缝尺寸、在各层不锈钢板搭接处施加角焊缝,以防止因施工缺陷导致温度荷载增加的优化设计方案。采用此方案处理后,机组经过6个月同等工况运行后,内衬完好,未再脱落,表明该设计方案合理有效。
There is potential safety hazard in steel coal bucket with stainless steel lining for coal storage in coal-fired power plants in operation condition of high temperature and coal piles. The coal bucket lining bulges under the effect of temperature. The effect of shear force of coal, cumulative coal weight and the temperature on plug weld of lining is analyzed via code formula and numerical model; besides, it is calculated based on a project case. Furthermore, the paper proposes an optimal design plan of enlarging plug weld size and using fillet welds at which stainless steel plates are connected to avoid the temperature load increase induced by construction defect. After treated with the plan, the lining remains unbroken and does not fall off any more with the unit runs for six months under the same operating condition, which demonstrates the reasonability and effectiveness of the design plan.

关键词(KeyWords)： 钢煤斗;内衬;不锈钢板;塞焊;温度荷载
steel coal bucket;lining;stainless steel plate;plug weld;temperature load

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王智磊,祝建,何江飞
WANG Zhilei,ZHU Jian,HE Jiangfei

DOI: 10.19585/j.zjdl.2017.03.011

参考文献(References)：

• [1]陈寿标.基于STAAD PRO的钢煤斗有限元三维计算分析[J].福建建筑,2009,129(3):50-53.
• [2]张震,王黎明.浅谈钢煤斗的设计[J].山西建筑,2009,35(7):69-70.
• [3]姜东,林娜,张红.某复杂钢煤斗的有限元计算和几点设计体会[J].特种结构,2010,27(6):56-58.
• [4]李雪峰.锅炉原煤仓变形故障诊断分析及处理[J].浙江电力,2016,35(9):66-70.
• [5]赵世伟,刁润丽,刘嘉,等.鲁阳发电厂原煤仓下煤不畅的治理[J].浙江电力,2016,35(2):63-67.
• [6]刘晓静.钢煤斗不锈钢内衬焊接[J].安装,2006(5):33-35.
• [7]刘福新.电厂不锈钢复合板煤斗焊接技术[J].中国新技术新产品,2015(11):39-40.
• [8]GB 50077-2003钢筋混凝土筒仓设计规范[S].北京:中国计划出版社,2003.
• [9]GB 50661-2011钢结构焊接规范[S].北京:中国建筑工业出版社,2011.
• [10]AWS D1.1/D1.1M-2015 Structural Welding Code-Steel[S].Amerlcan Welding Society,2015.