超临界汽轮机深度滑参数停机探索

探讨配置100%汽动给水泵的超临界汽轮机用汽动给水泵进行深度滑参数停机的可行性，论述深度滑参数停机的特点及操作与安全措施。试验表明，深度滑参数停机是可行的，整个停机过程蒸汽温度、金属温降、胀差、热膨胀下降速度均匀，轴承振动安全、可控；1次深度滑参数停机能减少盘车时间4天，节约厂用电17.3万kW·h，增加发电量10万kW·h。

Analysis on Deep Sliding Parameter Shutdown of Supercritical Steam Turbine

The feasibility that turbine-driven feed pump is used for thedeep sliding parameter shutdown of supercritical steam turbine equipped with 100% turbine-driven feed pump is discussed, as well as the characteristics, operation and safety measures of deep sliding parameter shutdown are investigated. The results show that the deep sliding parameter shutdown is feasible, in which the descent speed of steam temperature, metal temperature, differential expansion and thermal expansion are uniform, and the bearing vibration is safe and controllable. The deep sliding parameter shutdown can reduce barring time by 4 days, save auxiliary power by 17.3×104 kW·h, and increase power generation by 10×104 kW·h