Due to the complex structure and special working environment of the steam turbine, it is easy to be affected by various unfavorable factors, resulting in mechanical failures such as bearing bush burning and journal wear, which seriously interferes with its normal operation. Analyzing the causes of failures and taking effective preventive measures is undoubtedly of great practical significance to ensure the normal operation of power plants.
Analysis of the reasons for the wear failure of the turbine journal:
1. Overload operation: Overload operation of the equipment will cause the bearing to overheat and burn.
2. The oil pressure of the lubricating oil is too low or there is a lack of sufficient lubricating oil: a misoperation occurs when the oil system is switched during operation, resulting in a sudden drop in the oil pressure, and the oil cannot be supplied normally. axis.
3. The vibration of the unit is too severe: when the rotor in the steam turbine unit has an unbalanced centrifugal force, or the coupling is defective or the rotor center is deviated, it will destroy the stability of the unit's operation and cause wear.
4. There is a gap between the journal and the bearing, which will cause severe vibration during operation.
Why choose brush plating to repair wear on turbine journals?
1. Generally speaking, the steam turbines of power plants are very large and require cranes to transport them. It is very troublesome to send them to the maintenance workshop.
2. The repair quality of the on-site electric welding method is not good, because the heating will cause deformation and oxidation of the journal, and it is difficult to grind to the required size.
3. Brush plating can be repaired on site, with low cost, short time and high repair accuracy.
You can contact us, send pictures, we will help you formulate a repair plan or discuss the repair process.
