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1. A hydrophobic gravity-fed connection system, whose advantage is a simple design and reliable operation, but it has poor thermal efficiency. The reason is that the steam from the (high) primary pressure heater flows into the (lower) primary heater to release heat, thereby displacing a portion of the waste steam taken at (lower) pressure for reheating. 2. The function of the drain device is to reliably remove the condensate water from the (heater) in a timely manner, while preventing (steam) from flowing out along with the drain water, thereby maintaining the pressure on the steam side of the (heater) and the level of the condensate water. 3. To prevent vaporization in the high-speed feed water pump, the most common and effective measure is to install a (low-speed pre-pump) in front of the (feed water pump). 4. The function of the check valve at the outlet of the feed water pump is to prevent pressurized water from flowing back into the feed water pump when it stops operating, thereby avoiding reverse rotation of the pump and potential damage to the low-pressure pipelines and deaerator. ). 5. Valves can be classified into the following categories according to their purpose: (shut-off) valves, (regulating) valves, and (protective) valves. 6. Control valves mainly serve to (regulate the flow rate of the working fluid) and (control pressure). 7. Protective valves mainly include (check valves), (safety valves), and (quick shut-off) valves, etc. 8. The condenser cooling ratio can be expressed as the ratio of (cooling water volume) to (condensate volume), and it is influenced by factors such as region, season, water supply system, and condenser structure. 9. During the vacuum tightness test of the turbine, the rate of vacuum drop (