【摘 要】
：
针对某电厂125MW汽轮机在大修后出现调节级后压力和温度高、最大出力不足的现象,总结了可能出现的各种影响因素。经过高压缸揭缸检修,发现其调节级损伤严重,高压隔板的严重变
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针对某电厂125MW汽轮机在大修后出现调节级后压力和温度高、最大出力不足的现象,总结了可能出现的各种影响因素。经过高压缸揭缸检修,发现其调节级损伤严重,高压隔板的严重变形导致高压缸通流面积减小;同时性能试验结果显示调节级效率严重降低。经过详细的热力计算,分析出各环节对该机组调节级后压力升高及出力的影响,结果发现,高压缸隔板变形导致通流面积减小是影响调节级后压力升高的主要原因;调节级喷嘴面积及高压缸压力级通流面积的减小,导致了机组最大进汽量降低,使机组最大出力下降。经过变形修复,机组实际运行时调节级后压力和
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