Device for adjusting the clearance between moving turbine blades and the turbine ring
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsClaude C. Hallinger, Robert Kervistin
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Abstract
A device for adjusting the clearance between moving blades and the ring of a turbine wherein the ring includes a cylindrical sleeve, a perforated partition, and a wall, which together form an enclosure. Boreholes receive tubular elements which fit together with coaxial boreholes provided in opposite walls of a distribution chamber. The chamber communicates with pipes which admit heat regulating air. Alternating tubular elements traverse the perforated wall and the chamber to evacuate exhaust gas through pipes.
Claims8
A device for adjustment of the clearance between the blades and circumferentially continuous monoblock ring of a turbine, comprising:
- an inner sleeve having a seal gasket mounted thereto,
- a perforated, cylindrical partition encompassing the sleeve and fastened thereto;
- a peripheral wall forming a distribution chamber for the air which heats or cools the ring,
- an opposite wall;
- an enclosure formed by said inner sleeve which supports said seal gasket, and said opposite wall;
- and
- a plurality of tubular elements radially connecting said enclosure to the distribution chamber and ensuring the passage of heating or cooling air from the distribution chamber to the enclosure,
- wherein said inner sleeve and partition are circumferentially continuous and wherein said opposite wall has bore holes for receiving one end of the tubular elements, further comprising an exhaust pipe and tubular exhaust elements, each of said exhaust elements further comprising an end opening into the enclosure and including a nozzle operatively associated with an opening provided in the perforated partition, each of said exhaust elements also including an end opening to the outside of the distribution chamber and means for connecting with said exhaust pipe.
Dependencies are inferred from the claim text.