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US 6,957,537 B2Granted
Combustor of a gas turbine having a nozzle pipe stand
AssigneeMitsubishi Heavy Industries, Ltd.
InventorTakeo Hirasaki
Life of this patent
Estimating the term…
Abstract
Manifolds are shaped cross star having curved surfaces inside thereof, and holes are bored in four corners of the manifolds. In mounting a combustor to a casing, oil in the manifolds is transmitted to the holes by way of the curved surfaces. As a result of this, oil is prevented from staying, and coking is prevented from occurring, inside the manifolds.
Claims9
A combustor for a gas turbine comprising:
- a nozzle pipe stand having a plurality of main nozzles around a pilot nozzle and mounted to a casing through a sleeved mounting flange;
- a manifold that branches oil-fuel in an oil supply line to the main nozzles;
- and
- a heat insulating portion disposed between the sleeved mounting flange and the manifold,
- wherein said heat insulating portion comprises a closed air space.
2 more elements
A combustor for a gas turbine comprising:
- a nozzle pipe stand having a plurality of main nozzles around a pilot nozzle and mounted to a casing;
- a manifold that branches oil-fuel in an oil supply line to the main nozzles;
- and
- a sleeved mounting flange, which holds the main nozzles and is joined to the nozzle pipe stand;
- and
- a sleeve through which the pilot nozzle passes is joined to an end of the sleeved mounting flange with a closed air gap formed between said sleeve and said sleeved mounting flange.
3 more elements
A combustor for a gas turbine comprising:
- a nozzle pipe stand having a plurality of main nozzles around a pilot nozzle and mounted to a casing through a sleeved mounting flange;
- and
- a manifold having a plurality of holes bored on a first imaginary circle to branch oil-fuel in an oil supply line to the main nozzles, wherein the manifold has concave portions protruding inwardly.
Dependencies are inferred from the claim text.