1 000 MW汽轮机中低缸导汽管膨胀节腐蚀爆破分析

王卫军,卢允谦,李长鸣,赵勇峰,周志平

Analysis of corrosion and blasting mechanism for closed tube expansion joint of middle and low-pressure cylinder of 1 000 MW steam turbine

Weijun Wang,Yunqian Lu,Changming Li,Yongfeng Zhao,Zhiping Zhou

表4 低压2级转子叶片背面与高缸、中缸及1#波纹管底部沉积物主要成分对比

试样来源 质量分数/% Na2O Cl SO3 SiO2 P2O5 CaO MgO Al2O3 Fe2O3 Cr2O3 NiO CuO 低缸 43.4 15.4 2.62 17.7 0.41 0.56 2.95 3.06 10.55 1.87 中缸 32.6 1.14 40.3 0.28 1.00 4.08 6.81 2.79 高缸 14.7 3.73 13.6 4.59 13.3 22.2 12.7 1#波纹管底部 22.7 2.54 4.34 6.6 0.39 4.95 1.20 3.04 48.2 3.65 1.69