Role and Function
Turbine components and seal ring holder is a vital part of Turbine Seal Housings and Steam Seal Casings, reducing steam leakage while maintaining pressure differentials in generation seal applications. Installed between the cylinder and rotor in gland sealing in turbine setups, it directs steam flow efficiently, complements sealing steam turbine designs, and integrates with steaming ring elements for enhanced containment and reduced energy loss.
Types of Turbine Ring Holders
|
Type |
Description |
Key Use in Sealing Steam Turbine Systems |
|
Inter-Stage Turbine Ring Holder |
Positioned between diaphragm and rotor in Steam Seal Casings for stage isolation. |
Prevents inter-stage steam migration. |
|
Shaft End Turbine Ring Holder |
Placed at rotor ends to block cylinder-to-exterior leaks in gland sealing in turbine. |
Enhances boundary sealing at shaft ends. |
|
Balance Piston Turbine Ring Holder |
Balances axial thrust while sealing high-pressure steam in specialized Turbine Seal Housings. |
Supports generation seal reliability under thrust. |
Structure and Materials
Featuring multiple arc-shaped segments (4–6 typically) with spring strips for rotor contact and labyrinth sealing, the
Turbine Ring Holder aligns with steaming ring configurations for adaptive flow. Materials prioritize heat and wear resistance, often with hard coatings for harsh sealing steam turbine environments.
Materials & Specifications
|
Material |
Properties |
Applicable Conditions |
|
1Cr13 (Stainless Steel) |
Heat-resistant, corrosion-proof |
High/medium-pressure cylinders |
|
Special Alloys (e.g., Nickel-Based) |
Superior wear resistance, thermal stability |
Low-pressure wet steam areas |
Installation Positions
High-Pressure Cylinder
Demands tight clearances in gland sealing in turbine assemblies due to elevated temperatures and pressures.
Medium- and Low-Pressure Cylinders
Focuses on wet steam corrosion resistance, often within protective Steam Seal Casings.
Maintenance Points
Clearance Adjustment
Set rotor gaps per standards during install to avoid leakage or friction in Turbine Seal Housings.
Regular Inspections
Check for wear, deformation, or cracks during overhauls in generation seal components; replace as needed for sealing steam turbine upkeep.
Rust Prevention
Apply protective measures during shutdowns to safeguard performance, especially in steaming ring sections.
Distinctions from Related Components
Vs. Steam Seal
The Turbine Ring Holder is a targeted structural variant of steam seals, distinct from honeycomb or carbon ring types in broader gland sealing in turbine variants.
Vs. Diaphragm
Diaphragms secure stationary blades, while the Turbine Ring Holder provides sealing on the diaphragm, nested in Steam Seal Casings for optimal sealing steam turbine function.
Applications
Thermal and nuclear power plants for efficient steam containment.
Independent power producers (IPPs) and biomass facilities requiring robust generation seal solutions.
Turbine retrofit projects, compatible with GE and Siemens systems.
Standards
- ISO 9001 Quality Management System
- Compatible with Mitsubishi turbine systems
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