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I’m a beginner who has just started learning about *units; I don’t know many things, so I’d like to ask the experienced technicians: What are the potential hazards to the unit when its main steam temperature rises to around 450 degrees? Thank you
The normal temperature is around 430. An increase in temperature poses a challenge to the materials used in various parts of the turbine; it has a significant impact on both the strength and service life of these materials. Therefore, the inlet temperature is usually controlled so that it does not remain above the design value for extended periods
It’s mainly about controlling the steam pressure!
First, it is a test for the thermal stress on various components of the unit. It will affect the lifespan of the unit. Hangzhou Automobile stipulates that when both the intake temperature and pressure reach their upper limits, continuous operation shall not exceed 15 to 30 minutes per session, with a total annual limit of 20 hours. Second, it may affect the vacuum level of the condenser; it’s similar to how an increase in the pressure of the incoming air affects the vacuum level!