RUSSELL A GRAY
Engineering in Marblehead, MA
License number
Massachusetts 26236
Issued Date
Apr 28, 1972
Expiration Date
Jun 30, 2004
Type
Mechanical Engineer
Address
Address
Marblehead, MA 01945
Professional information
Linkage Arrangement For Steam Turbine Valves
US Patent:
5297775, Mar 29, 1994
Filed:
Dec 22, 1992
Appl. No.:
7/994995
Inventors:
Russell A. Gray - Marblehead MA
Assignee:
General Electric Company - Schenectady NY
International Classification:
K16K 3112
US Classification:
251 73
Abstract:
A linkage device for a steam turbine stop valve includes a support member having a pair of transverse sections separated by a substantially vertical portion; a reciprocal stop valve stem fixed to one of the transverse sections, the stop valve stem extending substantially parallel to but laterally offset from the vertical portion; an actuator rod arranged in substantial axial alignment with the stop valve stem along a force line, one end of the actuator rod extending through a hole in the other of the transverse sections; and a multi link assembly extending between the stop valve stem and the actuator rod, including a first link pivotally secured at a first end to the one transverse section, and a second link pivotally secured at a first end to the actuator rod. Second ends of the first and second links are pivotally secured to each other by a pivot pin. A trip cylinder is utilized to move the pivot pin through the force line, causing the multi link assembly to collapse, thus permitting closure of the valve.