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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 11814964 B1

PDFFull Text
Date of Patent:
Nov. 14, 2023

Filed:

Nov. 09, 2020

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, Pittsburg, 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); G01P 21/02 (2006.01); G01R 31/28 (2006.01); F01D 17/06 (2006.01); F02C 9/28 (2006.01); F01D 21/02 (2006.01); H02J 3/38 (2006.01); H02J 3/40 (2006.01); F01K 13/00 (2006.01); F01K 13/02 (2006.01); F16K 37/00 (2006.01); F02C 7/232 (2006.01); F02C 9/26 (2006.01); F02C 9/52 (2006.01); F02C 9/54 (2006.01); F01D 17/14 (2006.01); F01D 17/26 (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 control system is provided for a turbine valve. The turbine valve has a first coil and a second coil to control or sense movement of a mechanical valve positioner. Two valve positioners are provided with each valve positioner having two drive circuits to drive the first and second coils. Switches are provided such that only one drive circuit is connected to each coil at a time. The control system may also include a hydraulic pilot valve section and a main hydraulic valve section. Feedbacks are used to determine a pilot valve error and a main valve error which are combined to determine a turbine valve error. The turbine valve error is repeatedly determined to minimize the error.

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