The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
Jun. 19, 2006
Darrin Glen Kirchhof, Schenectady, NY (US);
William Charles Below, Clifton Park, NY (US);
Mark Edward Burnett, Buskirk, NY (US);
Frederick George Baily, Ballston Spa, NY (US);
Shorya Awtar, Clifton Park, NY (US);
Norman Arnold Turnquist, Sloansville, NY (US);
Darrin Glen Kirchhof, Schenectady, NY (US);
William Charles Below, Clifton Park, NY (US);
Mark Edward Burnett, Buskirk, NY (US);
Frederick George Baily, Ballston Spa, NY (US);
Shorya Awtar, Clifton Park, NY (US);
Norman Arnold Turnquist, Sloansville, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
An actuation pressure control system effects actuation of adjustable seal segments between stationary and rotating turbomachinery members. At least one actuator is coupled with each of the adjustable seal segments and controls a position of the seal segments, respectively. A pressure system is disposed within the turbomachinery that measures or estimates ambient pressure representing an actuator back pressure acting against the actuator. A pressure regulator via a controller pressurizes the actuator to a level sufficient for a desired seal operation and controls actuator pressure based on the actuator back pressure.