工程热物理学报
工程熱物理學報
공정열물이학보
JOURNAL OF ENGINEERING THERMOPHYSICS
2009年
10期
1717-1719
,共3页
徐旭%徐鸿%李桃%纪莎莎
徐旭%徐鴻%李桃%紀莎莎
서욱%서홍%리도%기사사
立式水轮发电机%通风系统%转子温度场
立式水輪髮電機%通風繫統%轉子溫度場
입식수륜발전궤%통풍계통%전자온도장
vertical hydro Dower generator%ventilation%rotor temperature field
本文采用有限元软件对某梯级电站立式水轮发电机通风系统进行数值模拟,在此基础上计算转子磁极各表面的散热系数,结合电机热耗,得到转子磁极温度分布.研究表明:采用CFD能较准确地模拟发电机通风系统的流场,为电机通风系统设计和优化提供有效的依据;转子磁轭端部加装弧形风扇后产生的冷却流量满足实际运行过程中电机冷却的需要;转子温度在其设计的绝缘容许温度范围内,且有足够裕度,可长期安全运行.
本文採用有限元軟件對某梯級電站立式水輪髮電機通風繫統進行數值模擬,在此基礎上計算轉子磁極各錶麵的散熱繫數,結閤電機熱耗,得到轉子磁極溫度分佈.研究錶明:採用CFD能較準確地模擬髮電機通風繫統的流場,為電機通風繫統設計和優化提供有效的依據;轉子磁軛耑部加裝弧形風扇後產生的冷卻流量滿足實際運行過程中電機冷卻的需要;轉子溫度在其設計的絕緣容許溫度範圍內,且有足夠裕度,可長期安全運行.
본문채용유한원연건대모제급전참입식수륜발전궤통풍계통진행수치모의,재차기출상계산전자자겁각표면적산열계수,결합전궤열모,득도전자자겁온도분포.연구표명:채용CFD능교준학지모의발전궤통풍계통적류장,위전궤통풍계통설계화우화제공유효적의거;전자자액단부가장호형풍선후산생적냉각류량만족실제운행과정중전궤냉각적수요;전자온도재기설계적절연용허온도범위내,차유족구유도,가장기안전운행.
The flow field in a ventilation system in a Vertical Hydro Power generator was simulated by applying CFD software.Based on it.coefficients of heat transfer were obtained.and then with the losses of difierent parts.the distributions of temperature field of stator were calculated.The research indicates that the ventilation system of a flow..bulb hydro..generator could be simulated accurately by CFD and provides references to its design and optimization.After adding arc fun on the end of rotor magnetic yoke,the flow brought by the revolution of rotor satisfies the need of the cooling of the generator.The rotor temperature is in the range of the permissible temperature of a designed insulation and has enough tolerance.