Micro-turbine generator multi-stage turbine with interstage catalytic converter

Patent metadata

Field	Value
Publication number	US-11512606-B1
Application number	US-202117472258-A
Country	US
Kind code	B1
Filing date	Sep 10, 2021
Priority date	Sep 10, 2021
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

The electrical power generation system including a micro-turbine including a combustor, a first stage turbine configured to be driven by a combustor exhaust from the combustor, at least one compressor operably connected to the combustor to provide a compressed airflow to the combustor, a catalytic converter configured convert the combustor exhaust to a catalytic exhaust that includes at least exothermic heat, a second stage turbine configured to be driven by the catalytic exhaust from the catalytic converter, and one or more shafts connecting the first stage turbine and the second stage turbine to the at least one compressor such that rotation of the first stage turbine and the second stage turbine drives rotation of the at least one compressor.

First claim

What is claimed is:

1. An electrical power generation system, comprising: a micro-turbine alternator, comprising:
a combustor;
a first stage turbine configured to be driven by a combustor exhaust from the combustor;
at least one compressor operably connected to the combustor to provide a compressed airflow to the combustor;
a catalytic converter configured to receive the combustor exhaust from the first stage turbine and to convert the combustor exhaust to a catalytic exhaust that comprises at least exothermic heat;
a second stage turbine configured to be driven by the catalytic exhaust from the catalytic converter;
one or more shafts connecting the first stage turbine and the second stage turbine to the at least one compressor such that rotation of the first stage turbine and the second stage turbine drives rotation of the at least one compressor; and an exhaust turbine reheat cycle configured to transfer heat from i) the combustor exhaust exiting the combustor prior to entering the first stage turbine to ii) the combustor exhaust exiting the first stage turbine prior to entering the catalytic converter.

2. The electrical power generation system of claim 1 , wherein the exhaust turbine reheat cycle further comprises:
a heat exchanger comprising:
one or more heat rejection passageways; and
one or more heat absorption passageways.

3. The electrical power generation system of claim 2 , wherein the exhaust turbine reheat cycle further comprises:
a first passageway extending from the combustor to the one or more heat rejection passageways and fluidly connecting the combustor to the one or more heat rejection passageways.

4. The electrical power generation system of claim 2 , wherein the exhaust turbine reheat cycle further comprises:
a second passageway extending from the one or more heat rejection passageways to the first stage turbine and fluidly connecting the one or more heat rejection passageways to the first stage turbine.

5. The electrical power generation system of claim 2 , wherein the exhaust turbine reheat cycle further comprises:
a third passageway extending from the first stage turbine to the one or more heat absorption passageways and fluidly connecting the first stage turbine to the one or more heat absorption passageways.

6. The electrical power generation system of claim 2 , further comprising:
a fourth passageway extending from the one or more heat absorption passageways to the catalytic converter and fluidly connecting the one or more heat absorption passageways to the catalytic converter.

7. The electrical power generation system of claim 1 , further comprising:
a fifth passageway extending from the catalytic converter to the second stage turbine and fluidly connecting the catalytic converter to the second stage turbine.

8. The electrical power generation system of claim 1 , further comprising:
a sixth passageway extending from the second stage turbine to a turbine of an auxiliary turbo charger and fluidly connecting the second stage turbine to the turbine.

9. The electrical power generation system of claim 3 , wherein the exhaust turbine reheat cycle further comprises:
a second passageway extending from the one or more heat rejection passageways to the first stage turbine and fluidly connecting the one or more heat rejection passageways to the first stage turbine.

10. The electrical power generation system of claim 9 , wherein the exhaust turbine reheat cycle further comprises:
a third passageway extending from the first stage turbine to the one or more heat absorption passageways and fluidly connecting the first stage turbine to the one or more heat absorption passageways.

11. The electrical power generation system of claim 10 , further comprising:
a fourth passageway extending from the one or more heat absorption passageways to the catalytic converter and fluidly connecting the one or more heat absorption passageways to the catalytic converter.

12. The electrical power generation system of claim 11 , further comprising:
a fifth passageway extending from the catalytic converter to the second stage turbine and fluidly connecting the catalytic converter to the second stage turbine.

13. The electrical power generation system of claim 12 , further comprising
a sixth passageway extending from the second stage turbine to a turbine of an auxiliary turbo charger and fluidly connecting the second stage turbine to the turbine.

14. The electrical power generation system of claim 2 , wherein the one or more heat absorption passageways are thermally connected to the one or more heat rejection passageways.

15. The electrical power generation system of claim 2 , wherein the one or more heat absorption passageways are physically connected to the one or more heat rejection passageways.

16. The electrical power generation system of claim 1 , wherein the at least one compressor further comprises:
a first stage compressor; and
a second stage compressor located aft of the first stage compressor, the first stage compressor and the second stage compressor being operably connected to the combustor to provide the compressed airflow to the combustor.

17. The electrical power generation system of claim 16 , further comprising:
an electric generator disposed along the one or more shafts such that electrical power is generated via rotation of the one or more shafts, wherein the electric generator is disposed along the one or more shafts between the first stage compressor and the second stage compressor.

18. The electrical power generation system of claim 17 , wherein at least one of the one or more shafts passes through the electric generator.

19. A vehicle, comprising:
a propulsion system; and
an electrical power generation system operably connected to the propulsion system, comprising:
a micro-turbine alternator, comprising:
a combustor;
a first stage turbine configured to be driven by a combustor exhaust from the combustor;
at least one compressor operably connected to the combustor to provide a compressed airflow to the combustor;
a catalytic converter configured to receive the combustor exhaust from the first stage turbine and to convert the combustor exhaust to a catalytic exhaust that comprises at least exothermic heat;
a second stage turbine configured to be driven by the catalytic exhaust from the catalytic converter;
one or more shafts connecting the first stage turbine and the second stage turbine to the at least one compressor such that rotation of the first stage turbine and the second stage turbine drives rotation of the at least one compressor and;
an exhaust turbine reheat cycle configured to transfer heat from i) the combustor exhaust exiting the combustor prior to entering the first stage turbine to ii) the combustor exhaust exiting the first stage turbine prior to entering the catalytic converter.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Himmelmann Richard A

Classifications

• F05D2250/82

  Micromachines · CPC title

• F05D2220/76

  an electrical generator · CPC title

• F02K3/08

  with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26) · CPC title

• F02C6/20 Primary

  Adaptations of gas-turbine plants for driving vehicles · CPC title

• F01D15/10 Primary

  Adaptations for driving, or combinations with, electric generators · CPC title