General Electric Company

Robert William Waltz

Chris E Latham

Quang H Nguyen

David Robert O'Connor

Thomas Alfred Laursen

Donald Keith Morrison

William Theodore Lipinski

Duane Plessinger

Don Morrison

Peter V Centore

George Stiffler

Thomas Kunzler

George M Gorring

Milton George Manos

James J Jennings

Robert Frato

A method to regulate overfire air passing through an overfire air duct and entering a flue gas stream in a combustion system including: directing overfire air into an inlet of the overfire air duct, passing the overfire air through the duct and discharging the overfire air into the flue gas stream in the combustion system; adjusting a flow rate of overfire air entering the inlet using a damper adjacent the inlet, and moving the damper parallel along an axis of the overfire air duct to increase and decrease the overfire air entering the inlet, wherein the damper has an open position at which the damper is extended out of the inlet and a closed position in which the damper is substantially in the inlet and blocking air entering the inlet.

Regulating overfire air in a boiler using an overfire air tube damper

A damper and overfire air duct in a combustion system having a combustion structure defining a flue gas passage, the damper and overfire air duct including: an inlet to the overfire air duct and an outlet to the duct discharging overfire air into the flue gas passage, and the damper aligned with an axis of the overfire air duct, and having an open position axially distal to the inlet and a closed position at least partially in the inlet and duct, wherein the damper is movable axially between the open and closed positions.

Overfire air tube damper for boiler and method for regulating overfire air

A damper box for an orifice air injector, the damper box comprising front and rear faces with respective front and rear openings therein, a pair of sides, a top and a bottom; and a pair of gates pivotally mounted within the damper box and actuatable between open and closed positions.

Zero cooling air flow overfire air injector and related method

Apparatus for controlling primary air flow and pulverized coal flow to a plurality of burners in a coal-fired boiler includes a plurality of coal dampers arranged to supply a mixture of air and pulverized coal to respective burners in the coal-fired boiler, each damper having a damper body and at least two orifice plates pivotally secured therein, the orifice plates movable between open and closed positions; a real time coal flow monitoring device operatively associated with each damper that is adapted to generate analog signals representing real time coal flow through its respective damper; and a programmable logic controller adapted to receive the analog signals and to adjust the orifice plates to balance the flow of air and pulverized coal to each of the plurality of burners.

Automatic coal damper

Growing community of inventors

Canton, OH, United States of America

Robert William Waltz