文(wen)章(zhang)來源(yuan)：中國(guo)華電(dian)集團公司 發布時間(jian)：2015-01-22
1月15日，華電云南金沙江中游水電開發有限公司梨園水電站首臺機組（4#機組）開始了定子疊片安裝，定子組裝進入關鍵安裝環節，預定工期為60天。
梨園水(shui)電站發電機組為(wei)單機容(rong)量60萬(wan)千瓦(wa)的立軸混流(liu)式水(shui)輪發電機。定(ding)子(zi)鐵(tie)(tie)芯高2.9米(mi)，外徑16.88米(mi)，內徑15.92米(mi)，總重448.492噸，包括定(ding)子(zi)沖片(pian)(pian)(pian)(pian)、測(ce)溫沖片(pian)(pian)(pian)(pian)、通風槽(cao)片(pian)(pian)(pian)(pian)、調(diao)整片(pian)(pian)(pian)(pian)、絕(jue)緣(yuan)墊圈等構(gou)件。鐵(tie)(tie)芯沖片(pian)(pian)(pian)(pian)材料是(shi)用磁(ci)導率高、單位損耗低、無(wu)取向的優質冷軋硅鋼(gang)片(pian)(pian)(pian)(pian)沖制而(er)成的扇形片(pian)(pian)(pian)(pian)，厚(hou)度均為(wei)0.5毫米(mi)。安裝(zhuang)時，定(ding)子(zi)鐵(tie)(tie)芯采用分(fen)段疊裝(zhuang)，6次(ci)壓緊，順時針疊片(pian)(pian)(pian)(pian)，相(xiang)鄰兩層錯開1/2沖片(pian)(pian)(pian)(pian)搭接疊裝(zhuang)。近29萬(wan)張沖片(pian)(pian)(pian)(pian)通過(guo)120根雙鴿(ge)尾筋、托塊與(yu)定(ding)子(zi)機座相(xiang)連接，工藝復雜，精密度高。