Integrated dual fuel delivery system

Patent metadata

Field	Value
Publication number	US-2016281606-A1
Application number	US-201615079560-A
Country	US
Kind code	A1
Filing date	Mar 24, 2016
Priority date	Mar 27, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

The present invention relates to dual fuel delivery system for a gas turbine. A dual fuel delivery system for a gas turbine includes a main fuel line having a main fuel oil conduit and a main fuel gas conduit, wherein the main fuel gas conduit encloses, at least partially, the main fuel oil conduit; and a first fuel divider having a first fuel oil divider connected to the main fuel oil conduit and a first fuel gas divider connected to the main fuel gas conduit, wherein the first fuel gas divider encloses, at least partially, the first fuel oil divider.

First claim

1 . A dual fuel delivery system for a gas turbine, comprising:
a main fuel line having a main fuel oil conduit and a main fuel gas conduit, wherein the main fuel gas conduit encloses, at least partially, the main fuel oil conduit; and a first fuel divider having a first fuel oil divider connected to the main fuel oil conduit and a first fuel gas divider connected to the main fuel gas conduit, wherein the first fuel gas divider encloses, at least partially, the first fuel oil divider.

2 . The dual fuel delivery system of claim 1 , comprising:
at least one second fuel divider having a second fuel oil divider and a second fuel gas divider, and wherein one outlet of the first fuel divider is connected to an inlet of the second fuel divider.

3 . The dual fuel delivery system of claim 2 , wherein the first fuel divider is positioned in a first plane and the second fuel divider is positioned in a second plane, and wherein the first plane is different from the second plane.

4 . The dual fuel delivery system of claim 2 , comprising:
two second fuel dividers, wherein each of two second fuel dividers are connected to different outlets of the first fuel divider.

5 . The dual fuel delivery system of claim 1 , wherein both the first fuel oil divider and the first fuel gas divider, have one inlet and two outlets.

6 . The dual fuel delivery system of claim 1 , wherein the main fuel gas conduit comprises an extension means.

7 . The dual fuel delivery system of claim 6 , wherein the expansion means comprises a bellow.

8 . The dual fuel delivery system of claim 1 , wherein the first fuel oil divider comprises at least one extension means.

9 . The dual fuel delivery system of claim 1 , wherein a connection between the main fuel oil conduit and the first fuel oil divider comprises a horizontal sliding guide, and/or wherein a connection between the first fuel oil divider comprises a vertical sliding guide.

10 . The dual fuel delivery system of claim 2 , comprising an injection head, the injection head comprises at least one injection nozzle adapted to inject a fuel oil and/or a fuel gas, wherein the injection head is connected to the second fuel divider.

11 . The dual fuel delivery system of claim 10 , wherein the injection head comprises plurality of injection sections, and wherein every injection section is connected to one outlet of the second fuel divider.

12 . The dual fuel delivery system of claim 1 , comprising fuel manifold connected to the inlet of the main fuel line, and adapted to supply the fuel gas and the fuel oil to the main fuel line.

13 . A gas turbine comprising the dual fuel delivery system of claim 1 .

14 . The gas turbine of claim 13 comprising a can combustor, a cooling air housing, and a burner, wherein the inlet of the main fuel line is positioned outside the can combustor, the outlet of the main fuel line and the inlet to the first fuel divider are positioned between the can combustor and the cooling air housing.

15 . A Method for delivering dual fuel to the burner of the gas turbine of claim 14 , the method comprising:
supplying the fuel oil and/or the fuel gas to the main fuel line; dividing the fuel oil and/or the fuel gas in the first fuel divider; and guiding the fuel oil and/or the fuel gas to the burner.

Assignees

• Ansaldo Energia Switzerland AG

Inventors

• Heynen Fridolin
• Maiztegui Inaki

Classifications

• F23R3/42

  characterised by the arrangement or form of the flame tubes or combustion chambers · CPC title

• F23R2900/00001

  Arrangements using bellows, e.g. to adjust volumes or reduce thermal stresses · CPC title

• F23R3/283

  Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances · CPC title

• F23R3/36

  Supply of different fuels · CPC title

• F02C9/40 Primary

  specially adapted to the use of a special fuel or a plurality of fuels · CPC title