Power plants – Combustion products used as motive fluid – With variable oxidizer control
Patent
1990-11-19
1993-02-23
Bertsch, Richard A.
Power plants
Combustion products used as motive fluid
With variable oxidizer control
60760, F23R 354
Patent
active
051879328
ABSTRACT:
To control cooling by oxidant surrounding a combustion chamber (20, 20'), a stored energy combustor (10, 10') includes an oxidant flow path (28) which extends about the combustion chamber (20, 20'). The stored energy combustor (10, 10') comprises a vessel (12, 12') having a wall (14, 14') defining spaced inlet and outlet ends (16 and 18) interconnected by the combustion chamber (20, 20'), an oxidant inlet port (22) upstream of the combustion chamber (20, 20') for directing oxidant thereinto, and a fuel injector (24) upstream of the combustion chamber (20, 20') for directing fuel thereinto. A housing (26) substantially surrounds the vessel (12, 12') in spaced relation to the wall (14, 14') from the inlet end (16) to the outlet end (18) whereby the housing (26) and wall (14, 14') define the oxidant flow path (28) therebetween which is in communication with the oxidant inlet port (22) upstream of the combustion chamber (20, 20'). The stored energy combustor (10, 10') also includes a tube (32) leading from a source of oxidant into the oxidant flow path (28) at a point adjacent the outlet end (18) of the vessel (12, 12') to direct oxidant into the oxidant flow path (28) so as to have a substantial tangential velocity component as it flows from the outlet end (18) to the inlet end (16) of the vessel (12, 12') and into the oxidant inlet port (22). With this arrangement, the stored energy combustor (10, 10') further includes a valve (38) operatively associated with the tube (32) for controlling the velocity of the oxidant entering the oxidant flow path (28) adjacent the outlet end (18) of the vessel (12, 12') dependent upon operating conditions whereby the valve (38) decreases velocity by opening to increase the cross-sectional area of the tube (32) and increases velocity by closing to decrease the cross-sectional area of the tube (32).
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Bertsch Richard A.
Sundstrand Corporation
Thorpe Timothy S.
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