Injecting apparatus with reheat combustor and turbomachine

Patent metadata

Field	Value
Publication number	US-10094569-B2
Application number	US-201414567761-A
Country	US
Kind code	B2
Filing date	Dec 11, 2014
Priority date	Dec 11, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

Embodiments of the present disclosure provide an apparatus comprising: a reaction chamber positioned between a first turbine stage of a power generation system and a turbine stage of the power generation system, wherein the turbine stage comprises a turbine nozzle and a turbine blade row; a plurality of injectors positioned on a wall of the reaction chamber; and a conduit in fluid communication with the plurality of injectors, wherein the conduit delivers at least one of fuel from a fuel supply line to the reaction chamber through the plurality of injectors.

First claim

What is claimed is:

1. An apparatus comprising:
a reaction chamber positioned between a first turbine stage of a power generation system and a subsequent turbine stage of the power generation system, wherein each turbine stage comprises a turbine nozzle and a turbine blade row;
a plurality of injectors positioned on a wall of the reaction chamber, wherein the plurality of injectors includes at least one nozzle injector positioned on the turbine nozzle of the subsequent turbine stage and oriented substantially in opposition to a direction of a fluid flow from the reaction chamber, wherein the turbine nozzle of the subsequent turbine stage defines a throat separating an aft portion of the reaction chamber from the turbine blade row in the subsequent turbine stage, and wherein the plurality of injectors and the at least one nozzle injector are in fluid communication with a single reaction zone within the reaction chamber;
a conduit in fluid communication with each of the plurality of injectors, wherein the conduit delivers at least one of a fuel and a carrier gas to the reaction chamber through the plurality of injectors;
at least one valve between a fuel supply line and the conduit for controlling an amount of the fuel provided to the conduit from the fuel supply line;
a controller operatively connected to the at least one valve;
a temperature sensor in communication with the controller for measuring an inlet temperature of the reaction chamber; and an emissions sensor in communication with the controller for measuring an emissions output of the reaction chamber, wherein the controller adjusts a position of the at least one valve to adjust an amount of fuel in the conduit delivered to the plurality of injectors, in response to the inlet temperature exceeding a temperature tolerance, or the emissions output of the reaction chamber exceeding an emissions tolerance.

2. The apparatus of claim 1 , wherein the at least one valve is configured to divert at most approximately one third of the fuel from the fuel supply line into the conduit.

3. The apparatus of claim 1 , wherein a mass ratio of the carrier gas to the fuel in one of the plurality of injectors is between approximately one-to-one and approximately five-to-one.

4. A reheat combustor comprising:
a reaction chamber positioned between a first turbine stage of a power generation system and a subsequent turbine stage of the power generation system, wherein each turbine stage comprises a turbine nozzle and a turbine blade row;
a plurality of injectors for delivering at least one of a fuel and a carrier gas to the reaction chamber, wherein each of the plurality of injectors is positioned on one of a wall of the reaction chamber and a surface of the turbine nozzle in the subsequent turbine stage, wherein the plurality of injectors includes at least one nozzle injector positioned on the turbine nozzle of the subsequent turbine stage and oriented substantially in opposition to a direction of a fluid flow from the reaction chamber, wherein the turbine nozzle of the subsequent turbine stage defines a throat separating an aft portion of the reaction chamber from the turbine blade row in the subsequent turbine stage, and wherein each of the plurality of injectors is in fluid communication with a single reaction zone within the reaction chamber;
a conduit in fluid communication with each of the plurality of injectors;
at least one valve between a fuel supply line and each of the plurality of injectors, for controlling an amount of the fuel diverted into the plurality of injectors from the fuel supply line;
a controller operatively connected to the at least one valve;
a temperature sensor in communication with the controller for measuring an inlet temperature of the reaction chamber; and an emissions sensor in communication with the controller for measuring an emissions output of the reaction chamber, wherein the controller adjusts a position of the at least one valve to adjust an amount of fuel in the conduit delivered to the plurality of injectors, in response to the inlet temperature exceeding a temperature tolerance, or the emissions output of the reaction chamber exceeding an emissions tolerance.

5. The reheat combustor of claim 4 , wherein the fuel delivered to the reaction chamber through the plurality of injectors comprises an entirety of the fuel delivered to the reaction chamber from a fuel supply line.

6. The reheat combustor of claim 4 , wherein a relative quantity of the fuel delivered to the plurality of injectors is at most approximately one third of the fuel delivered to the reaction chamber from the fuel supply line.

7. A turbomachine comprising:
a first stage combustor for reacting a fuel with a compressed air, wherein an unreacted portion of the compressed air passes through a first turbine stage as an excess air;
a reaction chamber for reacting the fuel with the excess air in fluid communication with the first turbine stage, the reaction chamber being positioned between the first turbine stage and a subsequent turbine stage of a power generation system, wherein each turbine stage comprises a turbine nozzle and a turbine blade row;
a plurality of injectors, wherein the plurality of injectors includes at least one nozzle injector positioned on the turbine nozzle of the subsequent turbine stage and oriented substantially in opposition to a direction of a fluid flow from the reaction chamber, wherein the turbine nozzle of the subsequent turbine stage defines a throat separating an aft portion of the reaction chamber from the turbine blade row of the subsequent turbine stage, and wherein each of the plurality of injectors is in fluid communication with a single reaction zone within the reaction chamber; and
a conduit in fluid communication with the plurality of injectors and the at least one nozzle injector, wherein the conduit delivers at least one of the fuel and a carrier gas to the reaction chamber through the plurality of injectors and the at least one nozzle injector, wherein a temperature of the reaction chamber causes the fuel, the excess air, and the carrier gas to combust and react within the reaction chamber;
at least one valve operatively coupled to the conduit for controlling an amount of the fuel delivered to the plurality of injectors from a fuel supply line in fluid communication with the first stage combustor;
a controller operatively connected to the at least one valve; and
a temperature sensor in communication with the controller for measuring an inlet temperature of the reaction chamber; and an emissions sensor in communication with the controller for measuring an emissions output of the reaction chamber, wherein the controller adjusts a position of the at least one valve to adjust an amount of fuel in the conduit delivered to the plurality of injectors, in response to the inlet temperature exceeding a temperature tolerance, or the emissions output of the reaction chamber exceeding an emissions tolerance.

8. The turbomachine of claim 7 , wherein the at least one valve delivers at most approximately one third of the fuel in the fuel supply line to the conduit.

9. The turbomachine of claim 7 , wherein a mass ratio of the carrier gas to the fuel in one of the plurality of injectors is between approximately one-to-one and approximately five-to-one.

Assignees

• Gen Electric

Inventors

• Davis Jr Lewis Berkley
• Foster Gregory Thomas
• Graham Kaitlin Marie
• Venkataraman Krishnakumar
• Widener Stanley Kevin

Classifications

• F23N2223/04

  Memory · CPC title

• F23N2241/20

  Gas turbines · CPC title

• F23N2223/08

  Microprocessor; Microcomputer · CPC title

• F23N1/00

  Regulating fuel supply · CPC title

• F23R2900/03341

  Sequential combustion chambers or burners · CPC title