Method for retrofitting a turbomachine
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United States of America Patent
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Jan 16, 2018
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N/A
app pub date -
Dec 28, 2016
filing date -
Dec 4, 2012
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Abstract
A method for retrofitting a turbomachine is provided wherein a first trip cup of the turbomachine is replaced with a second trip cup and by replacing a mechanical flyweight governor with a mechanical-hydraulic governor. The second trip cup includes a plunger disposed in a hole defined by the second trip cup. The first trip cup is removed from the turbomachine and the second trip cup installed such that, when a speed of the turbomachine exceeds a predetermined value, the plunger actuates a trip paddle located adjacent the second trip cup. The mechanical flyweight governor is removed from the turbomachine and a first set of governor linkages coupling the mechanical flyweight governor to a steam source. The mechanical-hydraulic governor is installed in the turbomachine, the mechanical-hydraulic governor being coupled to a shaft of the turbomachine and being coupled to the steam source via a second set of governor linkages.
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