Problems with the starting oil for Hangzhou Steam Turbines

If the starting oil is not removed while the unit is already operating under load, there may be some risks. Starting oil is primarily used to provide lubrication and cooling for the turbine during startup; once the unit is operating stably under load, it should normally be switched over to the main oil system. If the starting oil is not removed and the starting oil system continues to be used, it may lead to an increase in oil temperature, accelerated aging of the oil, and it could even affect the lubrication performance, resulting in increased equipment wear or other operational problems. When removing the starting oil during operation, it is necessary to ensure that the main oil system takes over all lubrication and cooling functions completely, and that the process proceeds smoothly to avoid disruptions in the normal operation of the unit due to sudden changes in oil pressure. Special care must be taken during operation, and the procedures must be followed to prevent any damage to the equipment or safety issues resulting from improper handling. Therefore, it is recommended to carefully check the system condition, assess whether it is necessary to remove the starting oil under the current conditions, and proceed with caution in accordance with the equipment manual and safety procedures. If necessary, you can consult the equipment manufacturer or professionals for advice. .

During the operation of Hangqi steam turbines, the starting oil should generally be removed after the unit starts up and reaches a certain speed. Starting oil is primarily used for initial lubrication and protection; once the unit is operating stably under load, this additional oil pressure is usually no longer necessary. If the starting oil is not removed, several risks may arise: 1. **Excessive lubrication**: A continuous flow of extra oil can lead to over-lubrication of the system, affecting the machine’s efficiency and potentially causing problems with other components. 2. **Rising temperature**: Continuous oil flow can cause the oil temperature to rise, which is not conducive to the proper operation of the machine. 3. **Increased consumption and costs**: Prolonged use of starting oil leads to greater fuel consumption, raising operational costs. 4. **Equipment wear**: Abnormal oil pressure can lead to excessive wear or damage of certain components. If the starting oil is removed during operation, the main risk is that improper handling may cause a sudden change in oil pressure, thereby affecting the stable operation of the unit. During operation, it is necessary to ensure that the oil is drained step by step in accordance with the correct procedures, in order to avoid pressure surges in the pump and lubrication system. In summary, it is recommended that, once the unit is operating stably, the starting oil be removed gradually in accordance with the operation manual and safety procedures, to ensure the safety and efficiency of the equipment. If you are not sure about how to proceed, it is best to consult the manufacturer or a professional. .

How can the quick shut-off valve be opened without removing the starting oil?

:'(:lol The quick-close valve opened, and starting oil was generated again. It is a typical case of misoperation.

Assuming it is not removed, the starting oil acts on the rear side of the quick-shut valve, while the quick-shut oil acts on the front side; the pressures of these two are roughly the same (both come from the pressure oil passing through solenoid valves), so stable operation for an extended period is definitely not possible

There is no risk; it can be removed directly. The function of the starting oil is to keep the shut-off valve closed before the shut-off oil is introduced, thereby preventing the shut-off valve from opening immediately once the shut-off oil is supplied, which could cause leakage inside the throttle valve and result in the unit operating at an abnormal speed. Therefore, the proper procedure is to introduce the shut-off oil first and then remove the starting oil, after which the shut-off valve will open. So there is no risk in removing the starting oil now. But your problem is that the starting oil has not been removed yet, yet the shut-off valve can still open; it’s necessary to check what the issue is

After the quick-shut oil system is established, the startup oil for the secondary setup