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US 12,662,944 B1Granted
Combustor scroll de-swirler
AssigneePratt & Whitney Canada Corp.
InventorsPaul Weaver, Guillaume Landry-Drolet, Michel Desjardins
Life of this patent
Estimating the term…
Abstract
An inlet scroll for a combustor includes an inlet, an annular outlet, a volute duct, and a transition. The volute extends from the inlet to circumscribe an axis to form a monotonically decreasing cross-sectional flow area from the inlet. The transition fluidly connects a radially inner boundary of the volute duct to the annular outlet. The transition includes a radial portion at the volute duct and an axial portion at the annular outlet.
Claims19
An inlet scroll for a combustor comprising:
- an inlet;
- an annular outlet;
- a volute duct extending from the inlet to circumscribe an axis, the volute duct comprising a monotonically decreasing cross-sectional area normal to a circumferential direction about the axis;
- and
- a transition fluidly connecting a radially inner boundary of the volute duct to the annular outlet, wherein the transition includes:
- a radial portion at the volute duct;
- an axial portion at the annular outlet;
- and
- a plurality of vanes disposed about the axis within at least the radial portion of the transition,
- wherein the plurality of vanes forms an axial load path through the inlet scroll;
- wherein the volute duct is split along a plane normal to the axis into a first section and a second section;
- and
- wherein the first section and the second section are joined at respective radially outer flanges and joined to the transition at respective radially inner flanges, the respective radially inner flanges are joined to the transition via at least one fastener extending axially through the respective radially inner flanges and at least one of the plurality of vanes.
10 more elements
A gas turbine engine comprising:
- a compressor;
- a combustor shell bounding an annular combustion chamber of a combustor;
- a casing circumscribing the combustor shell to define a plenum;
- and
- an inlet scroll for the combustor in fluid communication with a discharge of the compressor, the inlet scroll comprises:
- an inlet;
- an annular outlet in fluid communication with the plenum;
- a volute duct extending from the inlet to circumscribe an axis, the volute duct comprising a monotonically decreasing cross-sectional area normal to a circumferential direction about the axis;
- and
- a transition fluidly connecting a radially inner boundary of the volute duct to the annular outlet, wherein the transition includes:
- a radial portion at the volute duct;
- an axial portion at the annular outlet;
- and
- a plurality of vanes disposed about the axis within at least the radial portion of the transition,
- wherein the plurality of vanes forms an axial load path through the inlet scroll;
- wherein the volute duct is split along a plane normal to the axis into a first section and a second section;
- and
- wherein the first section and the second section are joined at respective radially outer flanges and joined to the transition at respective radially inner flanges, the respective radially inner flanges are joined to the transition via at least one fastener extending axially through the respective radially inner flanges and at least one of the plurality of vanes.
15 more elements
A gas turbine engine comprising:
- a compressor;
- a compressor discharge duct in fluid communication with a discharge of the compressor;
- a heat exchanger in thermal communication with an exhaust stream of the gas turbine engine, wherein the heat exchanger receives compressed gas from the compressor discharge duct via a supply line fluidly connecting the compressor discharge duct with the heat exchanger;
- a combustor shell bounding an annular combustion chamber of a combustor;
- a casing circumscribing the combustor shell to define a plenum;
- and
- an inlet scroll for the combustor in fluid communication with the heat exchanger to receive the compressed gas discharged from the heat exchanger, the inlet scroll comprising:
- an inlet;
- an annular outlet in fluid communication with the plenum;
- a volute duct extending from the inlet to circumscribe an axis, the volute duct comprising:
- a monotonically decreasing cross-sectional area normal to a circumferential direction about the axis;
- a transition fluidly connecting a radially inner boundary of the volute duct to the annular outlet, wherein the transition includes a radial portion at the volute duct and an axial portion at the annular outlet;
- and
- a plurality of vanes disposed about the axis within at least the radial portion of the transition, each vane of the plurality of vanes extending from a radially outer leading edge to a radially inner trailing edge to define an acute angle relative to a radial datum intersecting the axis,
- wherein the plurality of vanes forms an axial load path through the inlet scroll, and
- wherein the volute duct is split along a plane normal to the axis into a first section and a second section, and
- wherein the first section and the second section are joined at respective radially outer flanges and joined to the transition at respective radially inner flanges, the respective radially inner flanges are joined to the transition via at least one fastener extending axially through the respective radially inner flanges and at least one of the plurality of vanes.
14 more elements
Dependencies are inferred from the claim text.