초록 ▼

A seal is provided between an inner flowpath and inner band of a turbine frame for confining cooling air channeled therebetween. The seal includes a frustoconical seal support and a radially outer seal ring integrally joined to a smaller diameter distal end of the support. A radially inner ring is f

A seal is provided between an inner flowpath and inner band of a turbine frame for confining cooling air channeled therebetween. The seal includes a frustoconical seal support and a radially outer seal ring integrally joined to a smaller diameter distal end of the support. A radially inner ring is fixedly joined to the inner band coaxially with the outer ring and is spaced radially inwardly thereof to define a gap therebetween sized for limiting leakage of cooling air from a chamber defined between the seal and inner flowpath.

대표청구항 ▼

In a turbine frame including a plurality of struts joined to a radially inner band, and an annular inner flowpath disposed adjacent to the inner band and over which is flowable combustion gases, said inner flowpath being supported by the struts for unrestrained differential thermal movement therewit

In a turbine frame including a plurality of struts joined to a radially inner band, and an annular inner flowpath disposed adjacent to the inner band and over which is flowable combustion gases, said inner flowpath being supported by the struts for unrestrained differential thermal movement therewith, a seal for confining cooling air channeled between said inner flowpath and said inner band comprising: a frustoconical support having a proximal end fixedly coaxially joined to said inner flowpath, and a smaller diameter distal end, and a portion of said support spaced from said inner flowpath to define a chamber therewith for receiving said cooling air; a radially outer ring integrally coaxially joined with said support distal end; and a radially inner ring fixedly joined to said inner band coaxially with said outer ring and spaced radially inwardly thereof to define a gap therebetween sized for limiting leakage of said cooling air from said chamber.