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A seal plate assembly is provided in a rotor disc for a turbine engine. The seal plate assembly includes a radially extending flange on the disc and an annular groove defined between a radial surface on the flange and a face of the disc. An annular outer surface extends axially in facing relationshi

A seal plate assembly is provided in a rotor disc for a turbine engine. The seal plate assembly includes a radially extending flange on the disc and an annular groove defined between a radial surface on the flange and a face of the disc. An annular outer surface extends axially in facing relationship to an annular inner surface of the groove. A plate structure is supported between the inner and outer surfaces, and a lock structure is provided for holding the plate structure in place. The lock structure includes an axial leg that is adapted to be located between an inner edge of the plate structure and the inner surface of the groove, and the lock structure further includes a radial leg that is adapted to be located between the radial surface on the flange and an outwardly facing surface of the plate structure.

대표청구항 ▼

What is claimed is: 1. A seal plate assembly in a rotor disc for a turbine engine, the seal plate assembly comprising: an annular groove including an annular inner surface provided in said disc, said inner surface facing radially outwardly; an annular outer surface extending axially in facing relat

What is claimed is: 1. A seal plate assembly in a rotor disc for a turbine engine, the seal plate assembly comprising: an annular groove including an annular inner surface provided in said disc, said inner surface facing radially outwardly; an annular outer surface extending axially in facing relationship to said inner surface; a plate structure adapted to be disposed and supported between said inner and outer surfaces, said plate structure including an inner edge, facing radially inwardly and disposed adjacent said inner surface and an outer edge disposed adjacent said outer surface, said plate structure further including an outwardly facing surface and an opposite inwardly facing surface; a slot formed in the plate structure, said slot comprising an L-shaped recess in said plate structure and including a radial portion extending radially upwardly from said inner edge toward said outer edge and an axial portion extending axially inwardly from said outwardly facing surface, said axial portion extending axially inwardly beyond said radial portion and radially upwardly from said inner edge; and a lock structure including a radial leg and an axial leg extending perpendicular to said radial leg to define an L-shaped body, said lock structure adapted to be located in an installation position with said radial leg fitting within said radial portion of said slot and with said axial leg fitting within said axial portion of said slot, and said lock structure adapted to be moved to a lock position at a location disengaged from said slot such that said lock structure is disposed and located with said radial leg engaging said outwardly facing surface of said plate structure and said axial leg engaging said inner edge of said plate structure and filling a space between said inner edge of said plate structure and said inner surface of said groove to lock said plate structure in a predetermined position extending between said inner and outer surfaces. 2. The seal plate assembly of claim 1, wherein said annular groove further includes a radial surface extending substantially perpendicular to said inner surface, and said lock structure further extends between and substantially fills a space between said radial surface and said outwardly facing surface of said plate structure. 3. The seal plate assembly of claim 1, including a pointer on said lock structure extending radially from said radial leg for engaging one or more tabs extending from a face of said plate structure to hold said lock structure in position relative to said plate structure. 4. The seal plate assembly of claim 3, wherein said pointer extends radially from a location adjacent said groove toward said outer surface. 5. The seal plate assembly of claim 1, wherein said outer surface is defined within a groove. 6. The seal plate assembly of claim 5, wherein said groove defining said outer surface is defined in a blade platform of a blade mounted to said disc. 7. The seal plate assembly of claim 1, wherein an inner side of said axial leg of said lock structure is substantially flush with said inner edge of said plate structure in said installation position, and an outer side of said axial leg is engaged on said inner surface of said annular groove in said lock position. 8. The seal plate assembly of claim 1, wherein an outer side of said radial leg of said lock structure is substantially flush with said outwardly facing surface of said plate structure in said installation position, and said outer side of said radial leg is engaged on a radial surface of said annular groove extending substantially perpendicular to said inner surface. 9. A seal plate assembly in a rotor disc for a turbine engine, the seal plate assembly comprising: a radially extending flange on said disc and an annular groove defined between a radial surface on said flange and a face of said disc, said groove including an annular inner surface; an annular outer surface extending axially in facing relationship to said inner surface; a plate structure adapted to be disposed and supported between said inner and outer surfaces, said plate structure including an inner edge disposed adjacent said inner surface and an outer edge disposed adjacent said outer surface; a lock structure including an axial leg adapted to be disposed and located between said inner edge of said plate structure and said inner surface of said groove, and said lock structure including a radial leg adapted to be disposed and located between said radial surface on said flange and an outwardly facing surface of said plate; and including a pointer on said lock structure extending radially from said radial leg toward said outer surface for engaging between a pair of tabs extending from a face of said plate structure to hold said lock structure in position relative to said plate structure. 10. The seal plate assembly of claim 9, wherein said plate structure includes a slot formed adjacent said inner edge for receiving said lock structure during installation of said plate structure between said inner and outer surfaces. 11. The seal plate assembly of claim 10, wherein said lock structure is movable along said inner edge of said plate structure to position said lock structure in a lock position to lock said plate structure in a predetermined position extending between said inner and outer surfaces. 12. The seal plate assembly of claim 9, wherein said plate structure includes a lip portion extending axially from an inwardly facing surface of said plate structure for engaging an axially extending surface of said disc. 13. A method of providing a seal plate assembly in a rotor disc for a turbine engine, the method comprising: providing a radially extending flange on said disc and an annular groove defined between a radial surface on said flange and a face of said disc, said groove including an annular inner surface; providing an annular outer surface extending axially in facing relationship to said inner surface; moving a plate structure between said inner and outer surfaces, said plate structure including opposing lateral edges, an outwardly facing surface and an opposite inwardly facing surface, an inner edge disposed adjacent said annular inner surface and an outer edge disposed adjacent said annular outer surface, and a slot defined at said inner edge adjacent one of said lateral edges, said slot comprising an L-shaped recess in said plate structure and including a radial portion extending radially upwardly from said inner edge toward said outer edge and an axial portion extending axially inwardly from said outwardly facing surface; and moving a lock structure from an installation position to a lock position comprising disengaging said lock structure from a position in engagement with said slot and moving said lock structure relative to said plate structure laterally in a direction from said one lateral edge toward the other lateral edge to position said lock structure at said lock position, the lock structure including an axial leg located in said axial portion of said slot in said installation position, and said axial leg adapted to be disposed and located in engagement with said inner edge with said axial leg filling a space between said inner edge of said plate structure and said inner surface of said groove in said lock position, and said lock structure including a radial leg located in said radial portion of said slot in said installation position, and said radial leg adapted to be disposed and located between said radial surface on said flange and said outwardly facing surface of said plate structure with said radial leg in engagement with said outwardly facing surface in said lock position. 14. The method of claim 13, wherein said lock structure is positioned in said slot in said installation position during said movement of said plate structure between said inner and outer surfaces. 15. The method of claim 14, wherein said lock structure is movable from said slot along said inner edge of said plate structure during said movement from said one lateral edge toward the other lateral edge to position said lock structure from said installation position to said lock position. 16. The method of claim 15, including bending a pointer attached to said lock structure toward said outwardly facing surface of said plate structure to prevent circumferential movement of said lock structure. 17. The method of claim 13, including the step of positioning a first feature on an inwardly facing surface of said plate structure adjacent to a second feature associated with said face of said disc, where said first and second features cooperate with each other to lock said plate structure against circumferential movement.