Protection device for a turbine stator

Details Protection device for a turbine stator Protection device for a turbine stator

2011-07-05

2011-07-05

Wiehe, Nathaniel (Department: 3745)

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

C415S178000

Reexamination Certificate

active

07972106

ABSTRACT:
Protection device (10) for a stator of a gas turbine of the type comprising a series of sectors (12) constrained to each other by connection means, each sector (12) has at least one cavity (14) having a bottom (15), in correspondence with at least one cavity (14), a corresponding sheet (20) equipped with a series of pass-through holes (21) and suitable for covering at least one cavity (14) is fixed on an outer surface of the relative sector (12), each sector (12) is cooled by means of a stream of air coming from the pass-through holes (21) of the corresponding sheet (20) which is passed on the bottom (15) and discharged from at least one outlet hole, the bottom (15) of each sector (12) comprises a series of protuberances (30) to increase the thermal exchange surface and increase the cooling efficiency of the protection device (10).

REFERENCES:
patent: 3990807 (1976-11-01), Sifford
patent: 5353865 (1994-10-01), Adiutori et al.
patent: 5598697 (1997-02-01), Ambrogi et al.
patent: 6402464 (2002-06-01), Chiu et al.
patent: 6779597 (2004-08-01), DeMarche et al.
patent: 2004/0047725 (2004-03-01), Tomita et al.
patent: 2004/0141838 (2004-07-01), Thompson
patent: 0 709 550 (1996-05-01), None

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