1 Oil emulsification may occur, making the adhesion of lubricating oil poor, insufficient adhesion of the oil to the friction surface, damage to the oil film, dry friction between the rotor journal and the bearing bush, causing the bush to burn and the unit to vibrate strongly , And even crash the machine.

2 Water in the steam turbine oil will accelerate the oxidation of the steam turbine oil, increase the acid value and produce more oxidation deposits, thereby prolonging the demulsification time of the steam turbine and worsening the demulsification performance of the oil.

3 Water in the steam turbine oil will corrode the carbon steel pipes and components in the oil system, causing jams and reducing the sensitivity of the action. In severe cases, it will also cause the adjustment and security devices to refuse to move, leading to overspeed accidents of the unit.

4 Corrosion products produced by water in steam turbine oil are an important source of particulate matter in the oil. The water content of the steam turbine oil will make the particle size of the oil easily exceed the standard. The filter element of the oil filter is frequently replaced, and the operation and maintenance workload is large. In order to reduce the hazard of water content in steam turbine oil, the water content in lubricating oil should be less than 100mg/L.