Questions regarding exhaust-condensing steam turbines
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I am new to steam turbines. This is the DCS interface for the exhaust-condensing steam turbine in my facility, and I’m not quite clear about several pressure parameters. As shown in the diagram, PT-2708 represents the pressure after the first stage of the steam turbine. What is the significance of this pressure value? What is the meaning of PT-2709, which represents the pressure in the exhaust pipeline? What is the pressure at the PT-2710 measurement point? What’s the point?
Good children who love to learn: PT-2708 represents the pressure after the first stage of the steam turbine; this pressure is commonly referred to as the monitoring section pressure, and it is used to monitor for scaling in the flow path. There are also PT-2709 and PT-2710, which are pressure measurement points for the exhaust gas, used to ensure that the exhaust pressure remains within the specified limits.
PT stands for pressure, and numbers like 2708 represent the identification numbers of the measurement points. These are related to instrumentation and thermal engineering; anyone familiar with this field will understand them immediately. As for the structural principles of turbines, reading more books on turbines will help one understand them fairly well