Fluid injection system and method for mitigating rotating stall in turbine engine
AssigneeGE Vernova Infrastructure Technology LLC
InventorsMoorthi Subramaniyan, Gunnar Leif Dan Siden
Life of this patent
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Abstract
A system includes a turbine exhaust section downstream of a turbine. The turbine exhaust section includes an exhaust flow path. The turbine exhaust section also includes an inner wall radially disposed along the exhaust flow path. The turbine exhaust section also includes an outer wall disposed radially outward of the inner wall and along the exhaust flow path. The system also includes a fluid injection system configured to inject a fluid into a chamber radially disposed between the inner wall and the outer wall via a plurality of inner ports disposed in the inner wall. The plurality of inner ports is disposed downstream of a downstream edge of a last stage blade of the turbine.
Claims20
A system, comprising:
- a turbine system, comprising:
- an exhaust flow path;
- an inner wall radially disposed along the exhaust flow path;
- and
- an outer wall disposed radially outward of the inner wall and along the exhaust flow path;
- and
- a fluid injection system configured to inject a fluid into a chamber to reduce or inhibit a rotating stall condition of a turbine of the turbine system, wherein the chamber is disposed radially between the inner wall and the outer wall, wherein the fluid is injected via a plurality of ports disposed in the outer wall, the inner wall, or both;
- wherein the plurality of ports is angled in a circumferential direction about a longitudinal central axis of the turbine, and the circumferential direction opposes a direction of rotation of a plurality of blades of the turbine.
A system, comprising:
- a turbine system, comprising:
- an exhaust flow path;
- an inner wall radially disposed along the exhaust flow path;
- an outer wall disposed radially outward of the inner wall and along the exhaust flow path;
- a strut radially extending from the inner wall to the outer wall, wherein an axial length of the strut extends from a leading edge of the strut to a trailing edge of the strut, and a plurality of ports is formed into the strut;
- and
- an auxiliary strut axially aligned with the strut and circumferentially offset from the strut, wherein an additional axial length of the auxiliary strut extends from an additional leading edge of the auxiliary strut to an additional trailing edge of the auxiliary strut, the additional axial length is less than the axial length, and a plurality of auxiliary ports is formed into the auxiliary strut;
- and
- a fluid injection system configured to inject a fluid into a chamber to reduce or inhibit a rotating stall condition of a turbine of the turbine system, wherein the chamber is radially disposed between the inner wall and the outer wall, wherein the fluid is injected via the plurality of ports;
- and/or the plurality of auxiliary ports.
A system, comprising:
- a turbine system, comprising:
- an exhaust flow path;
- an inner wall radially disposed along the exhaust flow path;
- an outer wall disposed radially outward of the inner wall and along the exhaust flow path;
- a strut radially extending from the inner wall to the outer wall;
- a plurality of channels disposed within an interior of the strut;
- and
- a plurality of valves coupled to the plurality of channels;
- a fluid injection system configured to inject a fluid into a chamber to reduce or inhibit a rotating stall condition of a turbine of the turbine system, wherein the chamber is radially disposed between the inner wall and the outer wall, wherein the fluid is injected via a plurality of ports, and each port of the plurality of ports is fluidly coupled to a respective channel of the plurality of channels;
- and
- a controller comprising a memory and a processor, wherein the controller is configured to control the plurality of valves to independently control respective flow rates of a plurality of flows of the fluid through the plurality of channels to different ports of the plurality of ports.
Dependencies are inferred from the claim text.