化工与医药工程
化工與醫藥工程
화공여의약공정
Chemical and Pharmaceutical Engineering
2015年
4期
12-15
,共4页
布袋除尘器%钢结构%热应力%有限元分析
佈袋除塵器%鋼結構%熱應力%有限元分析
포대제진기%강결구%열응력%유한원분석
bag precipitator%steel structure%thermal stress%ifnite element analysis
基于ANSYS软件建立了布袋除尘器钢结构的有限元模型。模拟了布袋除尘器的温度场分布，温度分布比较均匀，温差较小，均在370~410℃的范围内。在负压和正压工况下分别对模型进行了热应力计算和分析。计算结果表明，负压和正压工况下均有少数柱脚与基础脱离，但最大脱离位移仅有0.2 mm左右，脱离程度极小，在允许范围内。布袋除尘器箱体顶板处最大应力仅为78.9 MPa，远小于相应材料的屈服强度。为布袋除尘器钢结构的优化设计提供了理论依据。
基于ANSYS軟件建立瞭佈袋除塵器鋼結構的有限元模型。模擬瞭佈袋除塵器的溫度場分佈，溫度分佈比較均勻，溫差較小，均在370~410℃的範圍內。在負壓和正壓工況下分彆對模型進行瞭熱應力計算和分析。計算結果錶明，負壓和正壓工況下均有少數柱腳與基礎脫離，但最大脫離位移僅有0.2 mm左右，脫離程度極小，在允許範圍內。佈袋除塵器箱體頂闆處最大應力僅為78.9 MPa，遠小于相應材料的屈服彊度。為佈袋除塵器鋼結構的優化設計提供瞭理論依據。
기우ANSYS연건건립료포대제진기강결구적유한원모형。모의료포대제진기적온도장분포，온도분포비교균균，온차교소，균재370~410℃적범위내。재부압화정압공황하분별대모형진행료열응력계산화분석。계산결과표명，부압화정압공황하균유소수주각여기출탈리，단최대탈리위이부유0.2 mm좌우，탈리정도겁소，재윤허범위내。포대제진기상체정판처최대응력부위78.9 MPa，원소우상응재료적굴복강도。위포대제진기강결구적우화설계제공료이론의거。
By using ANSYS, the ifnite element model of steel structure of bag precipitator was established. The temperature ifeld in bag precipitator was then simulated. The distribution in the temperature ifeld is quite uniform and the difference in the ifeld is small, which is within 370 ~ 410℃. Under positive and negative pressure conditions, thermal stress was calculated for the model. It was shown from the result that under both positive and negative pressure conditions, there were a few columns separated from foundation, but the maximum separation displacement was only 0.2 mm, which was quite small and within the allowable scope. The maximum stress in the top of bag was only 78.9 MPa, which was great lower than the yielding strength of the material. The analytical result has provided theoretical basis for the optimization of the steel structure of bag precipitator.
