Siemens Power Generation, Inc.

Continental Disc Corporation

Gabriel Hernandez

Jeffrey Richard Mallat

A rupture disc for use in a pressure relief system includes a dome having a concave and a convex side and a circumferential flange associated therewith. At least one control score is formed or otherwise produced in the dome at a radial position between an apex of the dome and an outer circumference of the dome. At least one of a depth, a width, a length and the radial portion of the at least one control score is selectively controlled so that the depth, width, length, and/or radial position of the at least one control score controls the pressure at which the dome will start to collapse.

Controlling the rated burst pressure of a rupture disc through the use of control scores on the disc dome

A method of repairing a generator blower hub assembly () and rotor blade () removed from the generator blower hub assembly () where the rotor blade () has fatigued material in threads of a threaded blade root (). The method may include removing () at least a portion of the fatigued material to form the blade root () to a first or new diameter. Threads may be formed () on the diameter of the blade root () using a roll forming process. A collar () may be secured within a threaded hole () formed in the generator blower hub assembly () where the collar () includes internal threads () for receiving the threads formed on the diameter of the blade root (), which may be threaded into the collar (). Collar () may be fabricated of steel alloy and include relief groove () for improving the fatigue resistance of the threaded blade root () when reassembled into the generator blower hub assembly ().

Growing community of inventors

Kansas City, MO, United States of America

Gabriel Hernandez