Negative pressure in the steam pipeline.
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It is the turbine exhaust pipeline, containing both steam and water. At a pressure of 0.3 Mpa and a temperature of 140 degrees, if the valves at both ends are closed and condensation occurs, will negative pressure develop in the pipeline?
This is knowledge from junior high school physics... In a fixed space, when steam condenses into water, its volume decreases and the pressure drops. But to what extent it will be low depends on the condensation temperature.
You can conduct a simple experiment: fill a beaker with half a cup of hot water, seal it with plastic wrap, and then cool it down. Eventually, you will notice that the plastic wrap will dip inwards