Damper seal
AssigneeROLLS-ROYCE plc
InventorsRobert Elliott, Ian Tibbott
Life of this patent
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Abstract
A damper seal 7, 21, 31 is provided in order to act within a mounting platform structure 3 for turbine blades 1, 2. The damper seal 7, 21, 31 includes an entrant surface 8, 28, 38 incorporating a number of paths 22, 32 to enable coolant flow across the entrant surface 8, 28, 38. The damper seal 7, 21, 31 acts to plug an aperture 9 in the structure 3 between adjacent blades 1, 2 and damper detrimental vibrations in the structure 3 which could damage the blades 1, 2. Thus, whilst contact portions 23, 33 are in vibrational coupling contact with the aperture 9, coolant airflow through the paths 22, 32 enables cooling of the seal 7, 21, 31 and areas of the structure 3 about the aperture 9.
Claims12
A damper seal for vibration control, the seal comprising an entrant surface for close association with an aperture in a mounting platform for components, the entrant surface having contact portions to engage the aperture to allow vibrational coupling therebetween and recessed paths to allow coolant flow about those contact portions across the entrant surface, said paths being both angled and staggered relative to one another.
A damper seal arrangement comprising a damper seal as claimed in claim 1 to 12 secured within an aperture of a mounting platform structure for turbine blades or aerofoils, the platform structure including a coolant cavity and the damper seal coupled to that cavity to enable coolant to flow across the entrant surface.
Dependencies are inferred from the claim text.