Flarestack Coanda burners with self-adjusting slot at pressure outlet
AssigneeThe British Petroleum Company p.l.c.
InventorDenis H. Desty
Life of this patent
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Abstract
A Coanda unit has a Coanda surface and a gas supply line terminating in a slot adjacent to the Coanda surface. One side of the slot is contiguous with the Coanda surface and the other side is formed of a tongue of resilient material which flexes within defined limits in response to the pressure of the gas supply so as to vary the slot width.
Claims16
A Coanda unit comprising a supply line for a pressurized gas and a Coanda body positioned across the outlet of the supply line so as to define a slot for discharging the gas along the surface of the Coanda body, one edge of said slot being contiguous with the Coanda surface, the opposite edge of said slot being defined by a resilient flap operatively coupled to said unit, said resilient flap being pre-loaded against said Coanda body so as to keep said supply line closed until a pre-determined gas pressure level is reached and said resilient flap being arranged to flex in response to gas pressures in excess of said pre-determined gas pressure level to form an effective slot width in the range of about 0 to about 0.05 inches, depending on the pressure of the gas supply, so that a stable flame is maintained at variations in gas pressure in excess of said pre-determined gas pressure.
Dependencies are inferred from the claim text.