Zero cooling air flow overfire air injector and related method
AssigneeGeneral Electric Company
InventorsWilliam T. Lipinski, Peter V. Centore, George M. Gorring, James J. Jennings, Robert Waltz, Thomas A. Laursen, Chris E. Latham, Duane Plessinger, Donald K. Morrison, David R. O'Connor
Life of this patent
Estimating the term…
Abstract
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.
Claims16
A damper box for an orifice air injector, said 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 said damper box and actuatable between open and closed positions.
A housing for an overfire air injector comprising a rearward portion adapted for connection to a supply duct and a forward portion having an attachment flange;
- a damper box secured to said attachment flange, said damper box having 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 said damper box adjacent said front opening and actuatable to move said gates between open and closed positions.
A method of shielding an overfire air injector in a fossil fired boiler from heat during periods when the overfire air injector is not in use comprising:
- a) adding a damper box to a front end of a housing enclosing the overfire air injector, said damper box having a front opening and at least one gate actuatable between open and closed positions;
- and
- b) closing said front opening by moving said at least one gate to the closed position when the overfire air injector is not in use.
Dependencies are inferred from the claim text.