A seal strip (60A, 60B, 60C, 60F, 60G, 60H, 60J) with an imperforate width-spanning portion (64) first and second rounded edges (65, 66) and one or more strip-thickening elements (67, 68, 74, 76, 82, 84, 90, 91) between the rounded edges. The strip-thickening elements may have transverse slots (80,
A seal strip (60A, 60B, 60C, 60F, 60G, 60H, 60J) with an imperforate width-spanning portion (64) first and second rounded edges (65, 66) and one or more strip-thickening elements (67, 68, 74, 76, 82, 84, 90, 91) between the rounded edges. The strip-thickening elements may have transverse slots (80, 86, 88, 93L, 93R, 72, 78) for increased flexibility of the strip. The strip-thickening elements may also have perforations (92) or gaps (69) to admit coolant and/or to reduce weight. Folded embodiments (60A, 60B) may have dimples (70) on the width-spanning portion (64) to limit bending of the folded portions (67, 68, 74, 76). The seal may be slidably mounted in opposed slots (58A, 58B) in respective adjacent turbine components (54A, 54B), filling a width (W) of the slots, and a side of the seal may be cooled by compressed air (48).
대표청구항▼
1. A seal apparatus comprising: a strip comprising an imperforate width-spanning portion, first and second rounded edges, and at least one non-woven strip-thickening portion between the rounded edges;wherein said at least one strip-thickening portion comprises first and second folded portions that a
1. A seal apparatus comprising: a strip comprising an imperforate width-spanning portion, first and second rounded edges, and at least one non-woven strip-thickening portion between the rounded edges;wherein said at least one strip-thickening portion comprises first and second folded portions that are folded inwardly toward each other from the first and second rounded edges respectively over the imperforate width-spanning portion, forming a central gap between proximal edges of the folded portions;wherein each of said folded portions comprises a series of transverse slots;wherein the strip is slidably mounted into two opposed slots in two respective adjacent components of a gas turbine, wherein the strip fills a width of the opposed slots, and the central gap is in fluid communication with a cooled area of the gas turbine; andwherein the imperforate width-spanning portion comprises a plurality of dimples extending toward the folded portions, wherein the dimples limit bending of the folded portions toward the imperforate width-spanning portion. 2. In a gas turbine comprising two adjacent components, and a coolant flow area on one side of the two adjacent components, and a seal apparatus mounted across two respective opposed slots in the two adjacent components, the seal apparatus characterized by: a strip comprising an imperforate width-spanning portion, first and second rounded edges, and at least one non-woven strip-thickening portion between the rounded edges;wherein said at least one strip-thickening portion comprises first and second strip-thickening portions extending inward from the respective rounded edges, and further comprising:a central gap between the first and second strip-thickening portions; anda series of transverse slots on each of the strip thickening portions, wherein each slot is open to the central gap;wherein the central gap is in fluid communication with the coolant flow area. 3. The seal apparatus of claim 2, wherein the first and second rounded edges are hook-shaped in a transverse sectional view of the seal apparatus. 4. In a gas turbine comprising two adjacent components and a coolant flow area, a seal apparatus, comprising: a strip of material with an imperforate width-spanning portion and a first non-woven strip-thickening portion associated with the width-spanning portion;the strip comprising first and second opposed rounded edges; anda perforation, slot or gap formed in the first strip-thickening portion that does not pass through the imperforate width-spanning portion; anda second non-woven strip-thickening portion associated with the width-spanning portion and comprising a further perforation or slot that does not pass through the imperforate width-spanning portion;wherein the strip is slidably mounted into two respective opposed slots in the two adjacent turbine components, wherein the first and second strip-thickening portions face the coolant flow area of the gas turbine. 5. The seal of claim 4 wherein the first and second opposed rounded edges and said first and second strip-thickening portions are integrally formed with the width-spanning portion. 6. The seal apparatus of claim 4, further comprising a sacrificial wear layer disposed on an external surface of the seal apparatus.
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이 특허에 인용된 특허 (14)
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