Integrated dual fuel delivery system

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.

The invention claimed is: 
     
       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; and 
 at least one second fuel divider that includes at least one of a second fuel oil divider and a second fuel gas divider, wherein the second fuel gas divider encloses the second fuel oil divider. 
 
     
     
       2. The dual fuel delivery system of  claim 1 , 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 extension 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 and the second 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. 
 
     
     
       16. The dual fuel delivery system of  claim 1 , wherein the second fuel oil divider is connected to the first fuel oil divider and the second fuel gas divider is connected to the first fuel gas divider.