机电设备
機電設備
궤전설비
Mechanical and Electrical Equipment
2015年
5期
10-14
,共5页
轴向位移%推力轴承%改进设计
軸嚮位移%推力軸承%改進設計
축향위이%추력축승%개진설계
axial displacement%thrust bearing%improved design
针对某汽轮机出现汽轮机转子轴向位移偏大的故障，通过理论分析与试验研究，得出转子轴向位移偏大的主要原因。针对这些原因，改进设计并加工了采用PCrNi3Mo材料的弹性支承板，并将副推力轴承的二销钉支撑结构改为筋板支撑。试验表明，采用新推力轴承的汽轮机运行平稳，未出现转子轴向位移偏大问题。对主推力轴承支承板的结构进行了改进设计，并采用有限元方法进行了数值计算，结果显示改进后的支承板在承受相同载荷时其挠度显著减小。
針對某汽輪機齣現汽輪機轉子軸嚮位移偏大的故障，通過理論分析與試驗研究，得齣轉子軸嚮位移偏大的主要原因。針對這些原因，改進設計併加工瞭採用PCrNi3Mo材料的彈性支承闆，併將副推力軸承的二銷釘支撐結構改為觔闆支撐。試驗錶明，採用新推力軸承的汽輪機運行平穩，未齣現轉子軸嚮位移偏大問題。對主推力軸承支承闆的結構進行瞭改進設計，併採用有限元方法進行瞭數值計算，結果顯示改進後的支承闆在承受相同載荷時其撓度顯著減小。
침대모기륜궤출현기륜궤전자축향위이편대적고장，통과이론분석여시험연구，득출전자축향위이편대적주요원인。침대저사원인，개진설계병가공료채용PCrNi3Mo재료적탄성지승판，병장부추력축승적이소정지탱결구개위근판지탱。시험표명，채용신추력축승적기륜궤운행평은，미출현전자축향위이편대문제。대주추력축승지승판적결구진행료개진설계，병채용유한원방법진행료수치계산，결과현시개진후적지승판재승수상동재하시기뇨도현저감소。
This study focuses on the fault of the rotor axial displacement in a steam turbine. Through theoretical analysis, three main causes which lead to the fault are deduced. Based on the analysis, the elastic support plate using material PCrNi3Mo is designed and made, and the support construction using two pins is changed into reinforcing plate. The experimental results show that steam turbines using the new thrust bearing are well operated without obvious axial displacement. The construction of main thrusting bearing elastic support plate is modified and numerically calculated using finite element method, which shows that the modified support plate has a smaller deflection while under the same load.
