Back to results
US 12,247,495 B2Granted
System having axial-radial exhaust diffuser and method of use
AssigneeGE Infrastructure Technology LLC
InventorsFelix Abraham Madukkakuzhy, Joshy John, Bala Muralidhar Singh Bahadur, Sanjeev Kumar Jain
Life of this patent
Estimating the term…
Abstract
A system includes an exhaust diffuser system having an axial-radial diffuser and a transition duct. The axial-radial diffuser includes an inlet, an outlet, an axial diffuser portion between the inlet and the outlet, and a radial diffuser portion between the axial diffuser portion and the outlet, wherein the inlet is configured to couple to a gas turbine system. The transition duct is coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, and the transition duct includes a discharge portion configured to couple to a heat recovery steam generator (HRSG).
Claims28
A system, comprising:
- an exhaust diffuser system, comprising:
- an axial-radial diffuser comprising an inlet, an outlet, an axial diffuser portion between the inlet and the outlet, and a radial diffuser portion between the axial diffuser portion and the outlet, wherein the radial diffuser portion increases in a first cross-sectional area in a first flow direction toward the outlet, and the inlet is configured to couple to a gas turbine system;
- and
- a transition duct coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, the transition duct comprises a discharge portion configured to couple to a heat recovery steam generator (HRSG), the transition duct has a second cross-sectional area that expands in a second flow direction from the axial-radial diffuser to the HRSG, and the transition duct comprises a plurality of expansion stages having different rates of expansion of the second cross-sectional area.
1 more element
A system, comprising:
- an exhaust diffuser system, comprising:
- an axial-radial diffuser comprising an inlet, an outlet, an axial diffuser portion between the inlet and the outlet, and a radial diffuser portion between the axial diffuser portion and the outlet, wherein the radial diffuser portion increases in cross-sectional area in a flow direction toward the outlet, and the inlet is configured to couple to a gas turbine system;
- and
- a transition duct coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, the transition duct comprises a discharge portion configured to couple to a heat recovery steam generator (HRSG), and the transition duct comprises a plurality of perforated baffles oriented at an acute angle relative to a central axis of the axial-radial diffuser.
1 more element
A system, comprising:
- an exhaust diffuser system, comprising:
- an axial-radial diffuser comprising an inlet, an outlet, an axial diffuser portion between the inlet and the outlet, and a radial diffuser portion between the axial diffuser portion and the outlet, wherein the radial diffuser portion increases in cross-sectional area in a flow direction toward the outlet, and the inlet is configured to couple to a gas turbine system;
- and
- a transition duct coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, the transition duct comprises a discharge portion configured to couple to a heat recovery steam generator (HRSG), and an angle of a first central axis of the radial diffuser portion at the outlet of the axial-radial diffuser is between 40 to 70 degrees.
1 more element
A system, comprising:
- an exhaust diffuser system, comprising:
- an axial-radial diffuser comprising:
- an inlet configured to couple to a gas turbine system;
- an outlet;
- an axial diffuser portion between the inlet and the outlet, wherein the axial diffuser portion comprises a first central hub having a first inner wall disposed about a central axis, a first outer wall disposed about the first inner wall, and a first exhaust passage between the first inner and outer walls;
- and
- a radial diffuser portion between the axial diffuser portion and the outlet, wherein the radial diffuser portion increases in cross-sectional area in a flow direction toward the outlet, wherein the radial diffuser portion comprises a second central hub having a second inner wall disposed about the central axis, a second outer wall disposed about the second inner wall, and a second exhaust passage between the second inner and outer walls and fluidly coupled to the first exhaust passage, wherein the radial diffuser portion turns outward away from the central axis from the axial diffuser portion to the outlet;
- a transition duct coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, and the transition duct comprises a discharge portion configured to couple to a heat recovery steam generator (HRSG);
- and
- a support structure extending from the radial diffuser portion to a base, wherein the support structure comprises first and second supports extending from the second central hub to the base.
7 more elements
A system, comprising:
- an exhaust diffuser system, comprising:
- an axial-radial diffuser comprising:
- an inlet configured to couple to a gas turbine system;
- an outlet;
- an axial diffuser portion between the inlet and the outlet, wherein the axial diffuser portion comprises a first central hub having a first inner wall disposed about a central axis, a first outer wall disposed about the first inner wall, and a first exhaust passage between the first inner and outer walls;
- and
- a radial diffuser portion between the axial diffuser portion and the outlet, wherein the radial diffuser portion increases in cross-sectional area in a flow direction toward the outlet, wherein the radial diffuser portion comprises a second central hub having a second inner wall disposed about the central axis, a second outer wall disposed about the second inner wall, and a second exhaust passage between the second inner and outer walls and fluidly coupled to the first exhaust passage, wherein the radial diffuser portion turns outward away from the central axis from the axial diffuser portion to the outlet, wherein the second inner wall of the second central hub comprises a perforated wall portion;
- and
- a transition duct coupled to the axial-radial diffuser, wherein the outlet is disposed inside of an intake portion of the transition duct, and the transition duct comprises a discharge portion configured to couple to a heat recovery steam generator (HRSG).
6 more elements
Dependencies are inferred from the claim text.