VIBRATION-DAMPING SYSTEM FOR A TURBINE BLADE AND A SPACER FOR POSITIONING ADJACENT A TURBINE BLADE

• Main Authors: LATIMER, Jeremy Peter, NOBLE, Patrick Daniel
• Format: Patent
• Language: English; French; German
• Published: 08.12.2021
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SHOCK-ABSORBERS; SPRINGS; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

A vibration-damping system (128) for turbine blade(s) (114) in a turbine (108) is provided. Each turbine blade (114) includes a platform (136, 136A, 136B) having a radially inner surface (137, 184). The system (128) includes a spacer (150) axially adjacent the platform (136, 136A, 136B) of the at least one turbine blade (114) in the turbine (108), e.g., adjacent a turbine blade (114) stage. The spacer (150) includes a body (154) having a gaspath facing surface (156) forming a portion of an annulus for a working fluid flowpath. A damping element coupler (162) is on the body (154) of the spacer (150), and a vibration-damping element (164) is configured to couple to the damping element coupler (162). The vibration-damping element (164) and the damping element coupler (162) are disposed to cause the vibration-damping element (164) to engage the radially inner surface (137, 184) of the platform (136, 136A, 136B) of the turbine blade(s) (114) to dampen vibration of the turbine blade(s) (114) during operation of the turbine (108).