发明名称 |
Leaf seal for inner and outer casings of a turbine |
摘要 |
A plurality of arcuate, circumferentially extending leaf seal segments form an annular seal spanning between annular sealing surfaces of inner and outer casings of a turbine. The ends of the adjoining seal segments have circumferential gaps to enable circumferential expansion and contraction of the segments. The end of a first segment includes a tab projecting into a recess of a second end of a second segment. Edges of the tab seal against the sealing surfaces of the inner and outer casings have a narrow clearance with opposed edges of the recess. An overlying cover plate spans the joint. Leakage flow is maintained at a minimum because of the reduced gap between the radially spaced edges of the tab and recess, while the seal segments retain the capacity to expand and contract circumferentially.
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申请公布号 |
US6431555(B1) |
申请公布日期 |
2002.08.13 |
申请号 |
US20010805359 |
申请日期 |
2001.03.14 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SCHRODER MARK STEWART;LEACH DAVID |
分类号 |
F01D11/00;F16J15/08;(IPC1-7):F16J15/02;F01D25/00 |
主分类号 |
F01D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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