通过对电站7#炉引风机轴承润滑与密封改造实例的叙述,分析了改造前密封失效的原因,介绍了一种简便易行的改造密封的方法。 Through the description of the example of the lubrication and sealing of the bearing of the # 7 boiler induced draft fan in the power station, the reasons for the failure of the seal before the reform are analyzed, and a simple and easy method to reform the seal is introduced.