针对某电厂1000MW汽轮机组大修后负荷升至500MW时低压B缸7、8瓦温度高、轴瓦前后温差大的问题,从理论到实践对影响椭圆轴瓦温度的可能因素进行了分析,找到7、8瓦温度高的根本原因是7、8瓦自位能力差和负荷较大。通过相应措施提高7、8瓦的自位能力,并减轻其负荷及修刮进油楔,从而解决了7、8瓦温度高的问题。 Aiming at the problem that the temperature of 7,8-watt high-pressure B-cylinder is high when the load of 1000MW steam turbine overhaul is over 500MW, and the temperature difference around the bush is large, the possible factors affecting the temperature of oval bushings are analyzed from theory to practice. The root cause of high wattage temperature is 7,8 watts self-abilities and load is poor. Through the corresponding measures to improve their ability to 7,8-watt, and reduce its load and repair scraper into the oil wedge, which solves the 7,8-watt high temperature problems.