锅炉低温省煤器流场模拟及结构优化研究  

Study of Flow Field Simulation and Structure Optimization of Low Temperature Economizer

作　　者：曾国兵[1] 刘聪[1] 黄志明[2] ZENG Guobing;LIU Cong;HUANG Zhiming(Anhui Electrical Engineering Professional Technique College,Hefei 230051,China;Jiangxi Vocational&Technical College of Electricity,Nanchang 330032,China)

机构地区：[1]安徽电气工程职业技术学院,安徽合肥230051 [2]江西电力职业技术学院,江西南昌330032

出　　处：《安徽电气工程职业技术学院学报》2019年第3期99-103,共5页Journal of Anhui Electrical Engineering Professional Technique College

基　　金：安徽省教育厅质量工程项目——火电厂集控运行专业综合改革试点(项目编号:2016zy011)

摘　　要：针对机组进行脱硝改造后,低温省煤器频繁发生磨损泄漏问题,对高温空预器出口至低温省煤器的烟道流场及灰场进行数值模拟分析,找出了原因并设计优化改造方案,优化后低温省煤器入口截面烟气流场分布较为理想,灰场亦有较为明显的改善,模型的整体压损增加仅约为10Pa,提高了机组的安全性与经济性,此结果可供工程技术人员参考。For the leakage problem of the low temperature economizer after modification of the unit,a numerical simulation analysis is made from the high temperature air preheater outlets to low temperature economizer flue dust and flow field and the reason is found out and the design is optimized.After optimization,the distribution of smoke flow in low temperature economizer inlet section is relatively ideal,the ash field is also obviously improved,the overall pressure loss of the model increases by about 10 Pa and thus increases safety and economy of the unit.The results can be used for reference for engineering and technical personnel.

关 键 词：数值模拟 流场 结构优化 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]