Other

Alstom Technology Limited

Abb Research Ltd.

Abb Inc.

Alstom (switzerland) Ltd

Terry M Grayson

James M Niziolek

Paul H Chase

Gregory F Rossano

Robert Dickerman

Joseph W Quinn

William M Clark, Iii

Donald J Kwapien

James M Bialobrzeski

Xavier R Ollat

A signal processing technique that allows the flame signal from a first source of flame and the flame signal from a second source of flame to be discriminated from each other when only both the first and second flame signals are viewed by the same flame scanner. The signal from the flame scanner is processed to enhance one or more of the attributes associated with the first flame and is simultaneously processed to enhance one or more attributes associated with the second flame.

Signal processing technique for improved flame scanner discrimination

An apparatus for evaluating data representing the electrical characteristics of a combustion vessel, the combustion vessel being operable to combust a fuel. The apparatus includes a matrix of nodes arranged on an ohmic material of the combustion vessel, a wire A, B, A, B, connected to each respective node and a switch SW , SW connected to each wire and to a current source. A circuit A, B for reducing leakage currents uses an added series element, optimally a diode D , and feedback control of the voltage across the diode to a set point of zero volts to effectively reduce the off-state leakage current of each switch SW , SW

Apparatus for evaluating data representing the electrical characteristics of a combustion vessel

An apparatus for providing information concerning a condition of a vessel such as a steam drum which segregates steam and liquid from one another includes a liquid contact assembly a signal generator element and a housing and a conduit for enclosing the signal generator element in a substantially leak proof manner within the vessel space. The liquid contact assembly is disposable at a first vessel location in the steam drum and has a vibration component operable to vibrate at natural frequencies which vary as a function of a predetermined characteristic of the liquid at the first vessel location and a support component for supporting the water contact assembly in contact with the liquid at the first vessel location. The signal generator element generates a signal indicative of a natural frequency of the vibration component

Apparatus for continuously monitoring liquid level conditions in a liquid-vapor separating device

A flame scanner for effecting therewith individual burner flame discrimination in multi-fossil fuel fired steam generators. The subject flame scanner is based on the use therein of a silicon carbide photodiode that is operative for converting into a photocurrent ultraviolet light, which impinges upon the silicon carbide photodiode after passing through a focusing lens.

Silicon carbide photodiode based flame scanner

An ionic flame monitor. The flame monitor has a flame rod that produces an ionization current when the flame rod is immersed in a flame and excited by a voltage. The ionization current has a DC component and an AC component each dependent on the intensity of the flame, and a flicker frequency. The flame monitor also has a computing device that is responsive to signals representative of the flicker frequency, and the AC and DC components of the ionization current for determining the existence of the flame.

Diagnostic ionic flame monitor

Growing community of inventors

Granby, CT, United States of America

Terry M Grayson