What is the relationship between the size of the steam supplied to the turbine shaft seal and the exhaust pressure?
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What is the relationship between the size of the steam supplied to the turbine shaft seal and the exhaust pressure?
In my personal opinion, and this is not a professional insight: under normal circumstances, the steam seal provides a good sealing effect. Slight changes in the exhaust pressure do not require any adjustment to the amount of steam used for the shaft seal, unless the amount of steam supplied to the shaft seal is already very low and the exhaust pressure increases significantly; in such cases, it is necessary to increase the amount of steam used for the shaft seal.
Generally, condensing steam turbines are those equipped with shaft seal steam, and the exhaust pressure level affects the amount of steam used
The level of exhaust pressure indicates the efficiency of the turbine’s operation; lower efficiency results in higher exhaust pressure and temperature!