工程科学学报
工程科學學報
공정과학학보
Journal of University of Science and Technology Beijing
2015年
2期
225-230
,共6页
李峰光%张建良%左海滨%祁成林%孙辉
李峰光%張建良%左海濱%祁成林%孫輝
리봉광%장건량%좌해빈%기성림%손휘
高炉%炉衬%灌浆%应力分布%有限元分析
高爐%爐襯%灌漿%應力分佈%有限元分析
고로%로츤%관장%응력분포%유한원분석
blast furnaces%furnace linings%grouting%stress distribution%finite element analysis
高炉灌浆补炉是高炉炉体维护的重要技术手段之一,目前国内的灌浆实践均根据经验进行,经常出现炉壳发热、烧红、炉墙顶穿、泥浆料通过砖缝渗入铁液引起爆炸等事故。本文基于有限元理论及弹性力学理论,利用ANSYS软件建立了灌浆过程炉衬应力计算模型,计算了不同灌浆压力、灌浆面积及灌浆位置等条件下炉衬的应力分布。研究发现:灌浆压力的增大仅引起炉衬内最大应力值的变化,不会造成应力穿透,条件允许的情况下可适当增大灌浆压力;单孔灌浆量的增大将导致炉衬应力集中位置向炉内迁移,应采用“少量、多孔”的灌浆操作方针;在炉衬最薄位置灌浆时易造成炉衬热面开裂,应避免在此位置灌浆。模型应用实例表明,本模型计算准确且对灌浆过程的指导是合理有效的。
高爐灌漿補爐是高爐爐體維護的重要技術手段之一,目前國內的灌漿實踐均根據經驗進行,經常齣現爐殼髮熱、燒紅、爐牆頂穿、泥漿料通過磚縫滲入鐵液引起爆炸等事故。本文基于有限元理論及彈性力學理論,利用ANSYS軟件建立瞭灌漿過程爐襯應力計算模型,計算瞭不同灌漿壓力、灌漿麵積及灌漿位置等條件下爐襯的應力分佈。研究髮現:灌漿壓力的增大僅引起爐襯內最大應力值的變化,不會造成應力穿透,條件允許的情況下可適噹增大灌漿壓力;單孔灌漿量的增大將導緻爐襯應力集中位置嚮爐內遷移,應採用“少量、多孔”的灌漿操作方針;在爐襯最薄位置灌漿時易造成爐襯熱麵開裂,應避免在此位置灌漿。模型應用實例錶明,本模型計算準確且對灌漿過程的指導是閤理有效的。
고로관장보로시고로로체유호적중요기술수단지일,목전국내적관장실천균근거경험진행,경상출현로각발열、소홍、로장정천、니장료통과전봉삼입철액인기폭작등사고。본문기우유한원이론급탄성역학이론,이용ANSYS연건건립료관장과정로츤응력계산모형,계산료불동관장압력、관장면적급관장위치등조건하로츤적응력분포。연구발현:관장압력적증대부인기로츤내최대응력치적변화,불회조성응력천투,조건윤허적정황하가괄당증대관장압력;단공관장량적증대장도치로츤응력집중위치향로내천이,응채용“소량、다공”적관장조작방침;재로츤최박위치관장시역조성로츤열면개렬,응피면재차위치관장。모형응용실례표명,본모형계산준학차대관장과정적지도시합리유효적。
The grouting technology is a very important maintenance method of the blast furnace stack. In China, the grouting process is completed by experience, so the furnace shell is always burnt and the mud material sometimes permeates into hot metal through the furnace lining, leading to accidents. In this paper, a stress calculation model of the furnace lining in the grouting process is set up with ANSYS software based on the finite element method and the theory of elastic mechanics. By using this model, the stress distribution of the furnace lining in the grouting process is calculated under different conditions of grouting pressure, grouting area and grouting location. It is found that the maximum stress in the furnace lining increases along with the increase of grouting pressure, but the stress concentration locates at the same place, and therefore the grouting pressure can be increased under certain conditions. The increase of single-hole grouting quantity causes the stress concentration location of the furnace lining to move towards the hot surface, so the guiding principle of“small quantity and more holes” should be insisted. The probability of lining cracking at the hot surface in-creases when grouting at the thinnest area of the furnace lining, so grouting at this area should be avoided. An application of the model shows that the simulation results are reasonable and effective.