Electronically controllable and testable turbine trip system and method with redundant bleed manifolds
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United States of America Patent
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Feb 27, 2018
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app pub date -
Jun 7, 2013
filing date -
Jun 8, 2012
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Abstract
A trip control system for use with, for example, turbines, includes a porting manifold that supports and provides fluid to two or more trip manifolds, each of which includes a bleed circuit having two or more bleed valves connected in parallel between a trip header line and a return or dump line to bleed the hydraulic fluid pressure from the trip header line to thereby cause a trip. The trip control system includes redundant trip manifolds operating in parallel, wherein each trip manifold is able to independently engage a trip of the turbine and each of the trip manifolds includes redundant sets of valves and other trip components that enable the trip manifold to operate to engage a trip of the turbine in the presence of a failure of one of the sets of components on a trip manifold, or while various components of the trip manifold are being tested.
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