Combustor seal structure and a combustor seal

摘要

A combustor seal structure includes a first recess portion and a second recess portion that are provided on opposing faces in adjacent flange portions of a transition piece; a seal member body disposed across the first recess portion and the second recess portion; a first projection portion and a second projection portion 64 that are provided at each end portion in the width direction of the seal member body and are capable of being in contact with a first seal face of the first recess portion and a second seal face of the second recess portion; a first spring member whose base end portion is connected to one end portion in the width direction of the seal member body and whose distal end portion extends to the other end portion and is capable of being in contact with a second pressing face.

主权项

1. A combustor seal structure for sealing connection portions between transition piece outlet ends and turbine inlet nozzles of a plurality of combustors disposed in a circumferential direction, the combustor seal structure comprising:
a first recess portion and a second recess portion that are respectively provided on facing faces of adjacent flange portions at the transition piece outlet ends; and a seal member, wherein the seal member includes:
a seal member body disposed across the first recess portion and the second recess portion;a first projection portion and a second projection portion, respectively formed on the seal member body at different end portions in a width direction of the seal member body, and capable of being in contact with a first seal face of the first recess portion and a second seal face of the second recess portion, respectively;a plurality of first spring members extending from the first projection portion obliquely toward a side of the second projection portion in the width direction of the seal member body, and capable of being in contact with a second pressing face of the second recess portion which faces the second seal face; anda plurality of second spring members extending from the second projection portion obliquely toward a side of the first projection portion in the width direction of the seal member body, and capable of being in contact with a first pressing face of the first recess portion which faces the first seal face, and wherein the plurality of first spring members and the plurality of second spring members are configured to cross one another if viewed from a longitudinal direction of the seal member body, wherein the plurality of first spring members extend directly from the first projection portion to a free end such that the plurality of first spring members only connect to the seal member body at the first projection portion and are not in contact with the first recess portion, and the plurality of second spring members extend directly from the second projection portion to a free end such that the plurality of second spring members only connect to the seal member body at the second projection portion, and are not in contact with the second recess portion, and wherein the plurality of first spring members and the plurality of second spring members are alternately provided in a longitudinal direction of the seal member body such that none of the plurality of first spring members and the plurality of second spring members are disposed at a same longitudinal position.