Steam turbine shell disassembly method
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Jan 30, 1995
filing date -
Jan 30, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a steam turbine shell which includes a horizontal joint, flanges and bolts or studs, washers and nuts, the provision of special disassembly bolts or studs, washers and nuts to be used to replace certain initially removed operating bolts or studs, washers and nuts to accept the forces which would normally build up on the remaining operating bolts or studs or washers, or nuts caused by the tendency of the shell to distort as bolts or studs, washers and nuts are removed, the special disassembly bolts or studs, or washers, or nuts having special characteristics, including a high thermal coefficient of expansion, the special disassembly bolts and washers being coated with a friction reducing compound and having high short term strength to enable their easy removal, even from a distorted shell.
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