Steam Turbine Gland Seal Installation Guide
Mar 04, 2026| Turbine steam seals are primarily installed within the clearances between the rotor and the stationary components. Specific locations include:
Shaft-end seals: Located at both ends of the rotor to prevent steam leakage.
Diaphragm seals: Installed between the diaphragms and the rotor to minimize inter-stage leakage.
Blade-tip seals: Positioned between the tips of the moving blades and the turbine casing.
The selection of these locations is designed to minimize steam leakage and enhance overall turbine efficiency.
The Three Key Functions of Steam Seals:
Sealing Function: Blocks the leakage of high-pressure steam toward the low-pressure side, thereby maintaining system pressure stability.
Energy Conservation: Reducing steam leakage by just 1% can boost the unit's overall efficiency by approximately 0.3%.
Rotor Protection: Prevents the ingress of external contaminants, thereby extending the service life of the rotor.