某350 MW超临界机组锅炉后烟道侧墙爆管数值模拟分析  

Numerical Simulation Analysis on Leakage of Back-pass Cage Side Wall Tube of a 350MW Supercritical Boiler

作　　者：郭飞 宋宝军[1,2] 张鑫莆 GUO Fei;SONG Bao-jun;ZHANG Xin-pu(State Key Laboratory of Efficient and Clean Coal-fired Utility Boilers;Harbin Boiler Co.,Ltd.)

机构地区：[1]高效清洁燃煤电站锅炉国家重点实验室,黑龙江哈尔滨150046 [2]哈尔滨锅炉厂有限责任公司

出　　处：《电站系统工程》2022年第3期41-43,共3页Power System Engineering

基　　金：黑龙江省自然科学基金杰出青年项目(JQ2021E004)资助。

摘　　要：针对国内某350 MW超临界机组锅炉,对锅炉后烟道侧墙实际结构建立数值模型,对爆管事故进行数值模拟分析,根据所得结果,分析得到了爆管管子流通蒸汽量较少,冷却能力较差导致管壁温度较高,从而引起爆管事故。为同类锅炉侧包墙设计时,提供了一定的指导建议。Based on a domestic power plant 350MW supercritical pressure boiler,a numerical model is built for the back-pass cage side wall by reference of the actual dimensions and construction and analysis is then performed on the leakage accident.Based on the analysis,it is presented that the steam flow of the leaked tube is relatively low and the cut-down cooling capability leads to higher tube wall temperature that brings the leakage.Instructive guidance for the design of relevant boiler cage side wall of the same boiler type is provided by this report.

关 键 词：爆管 包墙过热器 数值模拟 蒸汽流量不均 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]