Cooler vacuum and exhaust chamber vacuum
Thread Content
Are the vacuum in the surface cooler and the vacuum in the exhaust chamber the same thing?
The main pressure-taking points are located in different places, so the pressure difference is not significant
When starting a steam turbine, where is the vacuum drawn from?
Exhaust chamber vacuum _0.08MPa
They are connected, the pressures are similar, with a certain pressure difference, but it’s not significant
Since the exhaust chamber of the condensing steam turbine is connected to the cooler, and the inlet of the extractor is located in the middle of the cooler, the pressure measurement point designed is on the exhaust casing; using this point as a reference, the difference between the two values is not significant. Therefore, the trip alarm is based on the pressure measurement point.