What is the function of gland steam in a turbine?

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Multiple Choice

What is the function of gland steam in a turbine?

Explanation:
Gland steam exists specifically to seal the area around the turbine shaft where it passes through the casing. By filling the gland space with steam, it creates a protective barrier that prevents high‑pressure steam from leaking into the bearing oil space and from escaping to the outside. This helps keep the rotor carbon ring seals tight and stops steam from leaking along the shaft. It’s not used for cooling bearings, driving the governor, or providing lubrication—those functions come from separate systems. So the gland steam’s function is to seal the rotor carbon rings by creating a steam barrier at the shaft gland.

Gland steam exists specifically to seal the area around the turbine shaft where it passes through the casing. By filling the gland space with steam, it creates a protective barrier that prevents high‑pressure steam from leaking into the bearing oil space and from escaping to the outside. This helps keep the rotor carbon ring seals tight and stops steam from leaking along the shaft. It’s not used for cooling bearings, driving the governor, or providing lubrication—those functions come from separate systems. So the gland steam’s function is to seal the rotor carbon rings by creating a steam barrier at the shaft gland.

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