Is there a large difference between the turbine inlet pressure and the wheel chamber pressure?
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In our company, the inlet pressure of the turbine is around 36 kilograms, while the pressure inside the turbine chamber is around 16 kilograms. Why is there such a large difference? Where exactly is the wheelhouse located?
The chamber pressure is the pressure behind the first-stage turbine impeller; since the steam in the chamber has already done work, this pressure differs from the turbine inlet pressure.
Oh, I see. Thank you to the expert up there
The pressure in the wheel chamber should be located after the first-stage impeller; the level of this pressure can indicate the efficiency of your steam turbine. As the equipment operates for longer periods, the pressure at this point tends to increase
An increase in pressure indicates a decrease in efficiency
Learned along the way* It’s actually behind the first-stage impeller!
The pressure in the wheel chamber should be located after the first-stage impeller. The level of this pressure can indicate whether there is scaling in the flow passages of the steam turbine. As the equipment operates for longer periods, the pressure at this point tends to increase, but it must not exceed the maximum value specified by the manufacturer; otherwise, the turbine should be shut down for descaling.
Looking at your drawings, the pressure in our wheel room is actually the pressure measured after vacuuming the steam turbine. I kept thinking it was the pressure after the regulation stage; turns out it was just an imitation, haha