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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 11486251 B1

PDFFull Text
Date of Patent:
Nov. 01, 2022

Filed:

Nov. 09, 2020

Turbine speed detection and use

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);

Xudong Yang, Beijing, CN;

Assignee:

ABB Schweiz AG, Baden, CH;

Attorney:

Leydig, Voit & Mayer, Ltd.

Primary Examiner:

Mickey H France

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);
U.S. Cl.
CPC ...
F01C 20/28 (2013.01); F01D 17/06 (2013.01); F01D 21/02 (2013.01); F01K 13/003 (2013.01); F01K 13/02 (2013.01); F02C 9/28 (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 speed control system and a power load balance detector for a turbine is provided. The speed control system includes a speed wheel with a plurality of teeth. A timer stores a time stamp when each of the teeth passes by a speed probe. A first speed estimate is determined for overspeed protection, and a second speed estimate is determined for operational speed control. The power load balance detector trips or shuts down the turbine when an unbalance is above a first threshold and the speed of the turbine is above a second threshold.

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