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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.:

US 12140033 B1

PDFFull Text
Date of Patent:
Nov. 12, 2024

Filed:

Oct. 26, 2023

Valve position control

Applicant:

Abb Schweiz Ag, Baden, CH;

Inventors:

Camilo Lopez, Export, PA (US);

Mark Foltz, Pittsburgh, PA (US);

Steve Miller, Pittsburgh, PA (US);

Kevin Dowdell, Pittsburgh, PA (US);

Mark Wieland, Cranberry, PA (US);

Alan Majors, Pittsburgh, PA (US);

Assignee:

ABB Schweiz AG, Baden, CH;

Attorney:

Leydig, Voit & Mayer, Ltd.

Primary Examiner:

Loren C Edwards

Int. Cl.
CPC ...
F01C 20/28 (2006.01); F01D 17/06 (2006.01); F01D 17/14 (2006.01); F01D 17/26 (2006.01); F01D 21/02 (2006.01); F01K 13/00 (2006.01); F01K 13/02 (2006.01); F02C 7/232 (2006.01); F02C 9/26 (2006.01); F02C 9/28 (2006.01); F02C 9/52 (2006.01); F02C 9/54 (2006.01); F16K 37/00 (2006.01); G01P 21/02 (2006.01); G01R 31/28 (2006.01); H02J 3/38 (2006.01); H02J 3/40 (2006.01);
U.S. Cl.
CPC ...
F01C 20/28 (2013.01); F01D 17/06 (2013.01); F01D 17/145 (2013.01); F01D 17/26 (2013.01); F01D 21/02 (2013.01); F01K 13/003 (2013.01); F01K 13/02 (2013.01); F02C 7/232 (2013.01); F02C 9/263 (2013.01); F02C 9/28 (2013.01); F02C 9/52 (2013.01); F02C 9/54 (2013.01); F16K 37/0041 (2013.01); F16K 37/0083 (2013.01); G01P 21/02 (2013.01); G01R 31/2829 (2013.01); H02J 3/381 (2013.01); H02J 3/40 (2013.01); F05D 2220/31 (2013.01); F05D 2260/80 (2013.01); F05D 2270/02 (2013.01); F05D 2270/021 (2013.01); F05D 2270/80 (2013.01);
Abstract

A system for controlling a turbine valve is provided. The system includes a hydraulic pilot valve section being moveable in a first direction and a second direction; a main hydraulic valve section being moveable in a first direction to close the turbine valve and a second direction to open the turbine valve; a position demand indicating a desired position of the turbine valve; a first feedback indicating an actual position of the hydraulic pilot valve section; and aa second feedback indicating an actual position of the main hydraulic valve section. The system also includes a pilot valve error; a main valve error; a turbine valve error; and a pilot valve adjustment moving the hydraulic pilot valve section in response to the turbine valve error. The turbine valve error is repeatedly determined and the pilot valve adjustment repeatedly moves the hydraulic pilot valve section to minimize the turbine valve error.

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