我公司C3－35／8型汽轮机调试时，高压端轴封套圈（中间段）发生磨损事故，直接损失达数万元。返厂修复后，时隔两年，该轴封套圈严重磨损事故再次重演，不能不使我们对事故原因重新研究。轴封套圈两次磨损事故的征象大致相同。初始表现为端轴封漏汽量增大，并与日渐增，继而轴 When commissioning the C3-35 / 8 steam turbine of our company, the abrasion accident occurred on the high-pressure end shaft seal ring (middle section), with a direct loss of tens of thousands of yuan. Return to factory repair, after two years, the shaft seal ring serious wear accident repeated again, can not but let us re-examine the cause of the accident. Shaft seal ring two signs of wear and tear are roughly the same. The initial performance of the end seal leakage increased, and with increasing, and then shaft