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TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

The Development of High-Performance Leaf Seals

[+] Author and Article Information
H. Nakane, A. Maekawa, E. Akita, K. Akagi, T. Nakano, S. Nishimoto, S. Hashimoto, T. Shinohara, H. Uehara

Mitsubishi Heavy Industries, Ltd., 2-2-2 Shinhama Arai-cho, Takasago, Hyogo 676-8686, Japan

J. Eng. Gas Turbines Power 126(2), 342-350 (Jun 07, 2004) (9 pages) doi:10.1115/1.1615257 History: Received December 01, 2001; Revised March 01, 2002; Online June 07, 2004
Copyright © 2003 by ASME
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References

Figures

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Structure of the leaf seal
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Parameters of the configuration of the leaf plate
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Process for selecting the configuration of leaf plate
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Concept of the rigidity measuring test
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Rigidity measuring test device
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Relation between the load and radial displacement
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Flow of fluid in the leaf seal
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Flow pattern in the leaf seal (CFD)
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Correlation between pressure ratio and flow amount
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Correlation between pressure ratio and seal factor
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Appearance of the leaf seal (2-segment)
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Seal rotation test device
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Balance of forces working on a leaf plate
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Electricity check test result
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Rotating torque of the leaf seal
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Lifting amount of leaf plates
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Relation between the pressure distribution and the high/low pressure side gap
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Force balance on the leaf seal (δH≧δL)Grahic Jump Location
Force balance on the leaf seal (δH≦δL)
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Relation between the differential pressure and the rotating torque
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Location of the leaf seal
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Appearance of the leaf seal after operation

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