When will the steam turbine shaft seal heater be put in?
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When will the steam turbine shaft seal heater be put in? As soon as the steam enters the engine? Rush up and cast again? How long does it take to start trading again? Or do you need to put the load on before casting?
It's usually a random vote. Before switching, if it is a cold start, the vacuum should be evacuated before switching, and if it is a hot start, the opposite is true. When the 200MW unit rushes to 1000RPM, open it slightly, and then open it for a few turns at a constant speed. Pay close attention to the change in vacuum when it is opened. If the vacuum drops, it means that the opening is too high, so turn it off quickly. The 300MW unit is put in when the shaft seal is put in. The 200MW unit puts the shaft in and adds steam, which has a great impact on the expansion difference.