US 2026/0098477 A1Published application

Improved Gas Turbine Engine

AssigneeROLLS-ROYCE plc

InventorHaidong LI

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Abstract

A gas turbine engine, gas turbine engine including compressor assembly, combustor assembly having a first circumferential array of burner assemblies, turbine assembly, and exhaust assembly. The turbine assembly including a second circumferential array of high-pressure nozzle guide vanes, high-pressure turbine assembly, third circumferential array of low-pressure nozzle guide vanes, low-pressure turbine assembly, and fourth circumferential array of outlet guide vanes. A clocking position is defined by relative circumferential orientation of first circumferential array with any one of second circumferential array, third circumferential array, and fourth circumferential array. A quantity of burner assemblies are positioned in first circumferential array, and quantity of guide vanes are positioned in at least one of the second circumferential array, third circumferential array, and fourth circumferential array, such that there is a minimum quantity of five clocking positions between at least one of second circumferential array, third circumferential array, fourth circumferential array, and first circumferential array.

Claims11

Dependent claims

A gas turbine engine, the gas turbine engine comprising, in axial flow sequence, a compressor assembly, a combustor assembly, a turbine assembly, and an exhaust assembly, the combustor assembly comprising a first circumferential array of NBURN burner assemblies,

the turbine assembly comprising, in axial flow sequence, a second circumferential array of NHPNGV high-pressure nozzle guide vanes, a high-pressure turbine assembly, a third circumferential array of NLPNGV low-pressure nozzle guide vanes, a low-pressure turbine assembly, and a fourth circumferential array of NOGV outlet guide vanes,
a clocking position being defined by a relative circumferential orientation of the first circumferential array with any one of the second circumferential array, the third circumferential array, and the fourth circumferential array, in which a one vane in any one of the second circumferential array, the third circumferential array, and the fourth circumferential array, is aligned directly with a one burner in the first circumferential array, and
wherein, a quantity of burner assemblies (NBURN) are positioned in the first circumferential array, and a quantity of guide vanes (NHPNGV;
NLPNGV;
NOGV) are positioned in at least one of the second circumferential array, the third circumferential array, and the fourth circumferential array respectively, such that there is a minimum quantity of five (5) clocking positions between at least one of the second circumferential array, the third circumferential array, and the fourth circumferential array, and the first circumferential array.

2 more elements

A method for determining clocking positions for a combustor and turbine of a gas turbine engine, the method comprising the steps of:

(a) providing, in axial flow sequence, a compressor assembly, a combustor assembly, a turbine assembly, and an exhaust assembly;
(b) arranging the combustor assembly to comprise a first circumferential array of NBURN burner assemblies;
(c) arranging the turbine assembly to comprise, in axial flow sequence, a second circumferential array of NHPNGV high-pressure nozzle guide vanes, a high-pressure turbine assembly, a third circumferential array of NLPNGV low-pressure nozzle guide vanes, a low-pressure turbine assembly, and a fourth circumferential array of NOGV outlet guide vanes;
(d) defining a clocking position as a relative circumferential orientation of the first circumferential array with any one of the second circumferential array, the third circumferential array, and the fourth circumferential array, in which a one vane in any one of the second circumferential array, the third circumferential array, and the fourth circumferential array, is aligned directly with a one burner in the first circumferential array, and
(e) positioning the quantity of burner assemblies (NBURN) in the first circumferential array, and the respective quantity of guide vanes (NHPNGV;
NLPNGV;
NOGV) in at least one of the second circumferential array, the third circumferential array, and the fourth circumferential array, such that there is a minimum quantity of five (5) clocking positions between at least one of the second circumferential array, the third circumferential array, and the fourth circumferential array, and the first circumferential array.

4 more elements

Dependencies are inferred from the claim text.