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:
May. 30, 2006
Filed:
Feb. 12, 2004
Manu Dev Arora, Schenectady, NY (US);
Leroy Omar Tomlinson, San Diego, CA (US);
Raub Warfield Smith, Ballston Lake, NY (US);
Bruce Gordon Norman, Ballston Lake, NY (US);
Matthew Lennon, Swansea, GB;
Manu Dev Arora, Schenectady, NY (US);
Leroy Omar Tomlinson, San Diego, CA (US);
Raub Warfield Smith, Ballston Lake, NY (US);
Bruce Gordon Norman, Ballston Lake, NY (US);
Matthew Lennon, Swansea, GB;
General Electric Company, Schenectady, NY (US);
Abstract
A method for controlling the level of a drum in a drum-type boiler includes adjusting a gain of a drum level PID (such as a Proportional Integral Derivative control) in accordance with a signal representative of a set of tuning constants, a signal representative of drum level, and a signal representative of a drum level setpoint. The method also includes utilizing a flow control PID to adjust a drum level control valve, wherein the flow control PID adjusts the drum level control valve in accordance with an output of the drum level PID, a signal representative of steam flow, and a signal representative of drum feedwater flow.