Dual fuel nozzle system and apparatus

Patent metadata

Field	Value
Publication number	US-2016201897-A1
Application number	US-201414913056-A
Country	US
Kind code	A1
Filing date	Aug 19, 2014
Priority date	Aug 20, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

In various embodiments, a dual fuel nozzle ( 200 ) for use in a gas 200 turbine engine is provided. The nozzle may be configured to supply and gas and a liquid. The dual fuel nozzle ( 200 ) may include an interior wall ( 217 ). The interior wall ( 217 ) may include a shoulder ( 219 ). The shoulder ( 219 ) may include one or more gas ports ( 216 ). Gas may be discharged through the gas ports ( 216 ) and penetrate a mixing zone.

First claim

What is claimed is:

1 . A gas turbine fuel nozzle, comprising:
a housing, defining a mixing chamber including a transition zone, the housing comprising,
an interior wall comprising a shoulder and defining a fuel port in the shoulder,
the fuel port configured to conduct a fuel into the mixing chamber, wherein the fuel propagates across a volume of the mixing chamber prior to reaching the transition zone.

2 . The gas turbine fuel nozzle of claim 1 , further comprising a liquid supply.

3 . The gas turbine fuel nozzle of claim 2 , wherein the liquid supply is configured to conduct a liquid to the transition zone.

4 . The gas turbine fuel nozzle of claim 3 , wherein the liquid is at least one of a liquid fuel and water.

5 . The gas turbine fuel nozzle of claim 1 , wherein the shoulder defines a plurality of fuel ports.

6 . The gas turbine fuel nozzle of claim 1 , wherein the fuel port has a diameter of approximately 0.090 inches to approximately 0.110 inches.

7 . The gas turbine fuel nozzle of claim 1 , wherein the fuel propagates away from the interior wall.

8 . A dual fuel nozzle, comprising:
a gas supply; an interior wall comprising a shoulder, the shoulder defining a gas port; a housing defining a gas discharge zone configured to receive a gas from the gas port, the gas discharge zone comprising a transition zone; a liquid supply; and a liquid supply channel configured to conduct a liquid into the transition zone.

9 . The dual fuel nozzle of claim 8 , wherein the liquid is a liquid fuel.

10 . The dual fuel nozzle of claim 8 , wherein the liquid is water and is supplied to reduce emissions.

11 . The dual fuel nozzle of claim 8 , wherein the shoulder defines a plurality of gas ports.

12 . The dual fuel nozzle of claim 8 , wherein the gas penetrates a volume of the gas discharge zone.

13 . The dual fuel nozzle of claim 8 , wherein the gas propagates away from the interior way.

14 . The dual fuel nozzle of claim 8 , wherein the gas and the liquid mix in the transition zone.

15 . The dual fuel nozzle of claim 8 , further comprising an air channel configured to conduct air to the transition zone, wherein the air is mixed with the liquid and the gas.

16 . A dual fuel distribution system, comprising:
a gas fuel supply; a housing comprising an interior wall defining a shoulder, the shoulder defining a plurality of gas ports, wherein gas from the gas fuel supply is conducted through the plurality of gas ports in a mixing chamber; a liquid supply; and a liquid distribution channel defined in the housing and configured to conduct a liquid from the liquid supply to a transition zone, wherein the transition zone is a portion of the mixing chamber.

17 . The dual fuel distribution system of claim 16 , wherein the gas fuel and the liquid are mixed in the transition zone.

18 . The dual fuel distribution system of claim 16 , wherein the housing further comprises an air supply that is configured to conduct air to the transition zone.

19 . The dual fuel distribution system of claim 16 , wherein the plurality of gas ports is 12 gas ports.

20 . The dual fuel distribution system of claim 16 , wherein the liquid is at least one of water and a liquid fuel.

Assignees

• United Technologies Corp

Inventors

• Snyder Timothy S
• Dai Zhongtao
• Smith Randolph J
• Kopp-Vaughan Kristin

Classifications

• F23D14/48

  Nozzles · CPC title

• F23C1/08 Primary

  liquid and gaseous fuel · CPC title

• F23R3/36 Primary

  Supply of different fuels · CPC title

• F23R3/286

  having fuel-air premixing devices (F23R3/30 takes precedence) · CPC title

• F23D2900/11101

  Pulverising gas flow impinging on fuel from pre-filming surface, e.g. lip atomizers · CPC title