Device for operating a swirler which controls combustion air of

Details Device for operating a swirler which controls combustion air of Device for operating a swirler which controls combustion air of

1993-06-17

1994-08-02

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combustion products generator

60748, F02C 314, F02C 916

Patent

active

053334590

ABSTRACT:
A device operates a swirling device which controls the flow rate of combustion air of a burner for gas turbine engines. At the head end of a combustion chamber, a ring body which is arranged coaxially with respect to the fuel nozzle is to have swirling ducts whose cross-sections are controllable by duct walls of a ring which is axially displaceable on the ring body. The axial displacement of the ring is to take place by means of a control piston which is axially displaceable in a housing, is spring-loaded on one side, is also actuated by a valve-controlled pressure difference existing on the spring side between an ambient pressure and a primary air pressure, controls openings communicating with the valve and the head end of the combustion chamber, and is acted upon on piston surfaces, which are free with respect to the housing, on the one side, by a pressure of supplied primary air existing at the head end and, on the other side, by the chamber pressure existing at the burner.

REFERENCES:
patent: 2655787 (1953-10-01), Brown
patent: 4534166 (1985-08-01), Kelm et al.
patent: 4542622 (1985-09-01), Green et al.
patent: 4754600 (1988-07-01), Barbier et al.
patent: 5159807 (1992-11-01), Forestier

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