Low leakage spring clip/ring combinations for gas turbine engine

摘要

A combustor-to-transition seal (301) includes a spring clip assembly (322, 422, 522) and a first spring metal ring (340, 441) or a ring assembly (440,540) that includes the first spring metal ring (441) and a second spring metal ring (442). Such combustor-to-transition seal (301) provides a first seal (321) and a second seal (331, 531) when at a junction of a combustor (108, 308, 508) and a transition (114, 314, 514). In an embodiment, the first spring metal ring (340) has a plurality of apertures (342) through the ring (340) that provide effusion cooling of the ring (340). The plurality of apertures (342) regulates a flow of cooling fluid to maintain an acceptable temperature of the ring (340). In an alternative embodiment, the second spring metal ring (442) has grooves (446) that regulate a flow of cooling fluid to maintain an acceptable temperature of the ring assembly (440).

主权项

1. A combustor-to-transition seal comprising:
a spring clip assembly comprising a circular arrangement of leaf springs adapted to provide a first seal between a combustor and a transition, effective to provide mutual support to the combustor and the transition, and to allow a flow of cooling fluid to pass through the spring clip assembly; and a first spring metal ring positioned downstream of the leaf springs, between the combustor and the transition and biased against a sealing surface to form a second seal between the combustor and the transition, the first spring metal ring comprising a plurality of defined passages effective to regulate the flow of cooling fluid there through and to cool the first spring metal ring, wherein the first spring metal ring is positioned partially within a partial slot, wherein the combustor-to-transition seal is configured to permit relative radial motion between the combustor and the transition, and the relative radial motion between the combustor and the transition results in relative radial motion between the sealing surface and the partial slot, and wherein the first spring metal ring is free to move radially within the partial slot to accommodate the relative radial motion.