Gas turbine

Abstract

Disclosed is a gas turbine which includes: a gas expansion part that expands gas; a power generation part that generates a rotational force due to the gas expanded by the gas expansion part and has a turbine shaft so as to transfer the rotational force; and an air compression part that is combined with the turbine shaft of the power generation and rotates and compresses air so as to supply compressed air to the gas expansion part. The power generation part generates the rotational force when a nozzle assembly having at least one injection hole so as to inject the gas in a circumferential direction is combined with the turbine shaft and the gas is injected in the circumferential direction via the at least one injection hole.

1 . A gas turbine comprising:
 a gas expansion part that expands gas;   a power generation part that generates a rotational force due to the gas expanded by the gas expansion part and has a turbine shaft so as to transfer the rotational force;   an air compression part that is combined with the turbine shaft of the power generation and rotates and compresses air so as to supply compressed air to the gas expansion part,   wherein the power generation part generates the rotational force when a nozzle assembly having at least one injection hole so as to inject the gas in a circumferential direction is combined with the turbine shaft and the gas is injected in the circumferential direction via the at least one injection hole.   
     
     
         2 . The gas turbine of  claim 1 , wherein a plurality of nozzle assemblies are provided to communicate with each other, and the plurality of nozzle assemblies are disposed at a predetermined distance along an axial direction of the turbine shaft so that the gas is able to sequentially flow along the axial direction of the turbine shaft. 
     
     
         3 . The gas turbine of  claim 2 , wherein each of the plurality of nozzle assemblies comprises:
 a housing that is combined integrally with the turbine shaft, has an open end through which the gas flows in and has at least one injection hole formed in an outer circumferential surface of the housing; and   at least one gas injection pipe that is combined with the outer circumferential surface of the housing so as to communicate with the at least one injection hole.   
     
     
         4 . The gas turbine of  claim 3 , further comprising a guide that is disposed between the nozzle assemblies and guides the gas injected from a front nozzle assembly to a rear nozzle assembly. 
     
     
         5 . The gas turbine of  claim 4 , wherein at least a part of the housing and at least a part of the guide overlap each other. 
     
     
         6 . The gas turbine of  claim 2 , wherein a plurality of nozzle assemblies are disposed, and each of the plurality of nozzle assemblies has at least one injection hole formed therein, and the plurality of nozzle assemblies are continuously stacked along the axial direction of the turbine shaft. 
     
     
         7 . The gas turbine of  claim 6 , wherein two or more plates overlap each other so that the nozzle assemblies are able to be formed. 
     
     
         8 . The gas turbine of  claim 6 , wherein one nozzle assembly is combined by overlapping two plates each other, and the injection hole is formed between both plates that overlap each other. 
     
     
         9 . The gas turbine of  claim 2 , wherein an entire cross-sectional area of the injection hole of the rear nozzle assembly is greater than an entire cross-sectional area of the injection hole of the front nozzle assembly. 
     
     
         10 . The gas turbine of  claim 2 , wherein the number of injection holes of the rear nozzle assembly is greater than the number of injection holes of the front nozzle assembly. 
     
     
         11 . The gas turbine of  claim 1 , wherein the gas expansion part comprises a fuel injection device that injects a fuel for combustion and a water injection device that injects water for evaporation. 
     
     
         12 . The gas turbine of  claim 11 , wherein a plurality of combustion tubs are arranged in a circumferential direction of the gas expansion part, and the fuel injection device and the water injection device are individually provided at each of the plurality of combustion tubs. 
     
     
         13 . The gas turbine of  claim 11 , wherein a plurality of combustion tubs are arranged in a circumferential direction of the gas expansion part, and the fuel injection device and the water injection device are provided together at each of the plurality of combustion tubs. 
     
     
         14 . The gas turbine of  claim 1 , wherein the turbine shaft is formed in a form of a hollow, and a through hole is formed in the turbine shaft so that the gas is able to be guide to the nozzle assembly via the hollow. 
     
     
         15 . The gas turbine of  claim 1 , wherein the nozzle assembly is combined integrally with the turbine shaft. 
     
     
         16 . A gas turbine comprising:
 a casing in which an injection chamber having an inlet and an outlet is provided;   a turbine shaft that penetrates the injection chamber of the casing and is rotatably combined with the casing;   at least two nozzle assemblies that are combined with each other by a predetermined distance along an axial direction of the turbine shaft, are opened in a direction of an inlet of the casing and are closed in a direction of an outlet of the casing so as to have a housing, which is combined with the turbine shaft and in which at least one injection hole is formed through an outer circumferential surface of the housing and a gas injection pipe, which is combined with the at least one injection hole of the housing so as to communicate with each other and in which an open end is formed in a circumferential direction of the gas injection pipe;   a gas expansion part that is installed within the casing and generates a combustion gas so as to supply the combustion gas to the at least two nozzle assemblies; and   a guide that is combined with the casing so as to block a space between the at least two nozzle assemblies and guides the combustion gas injected from the gas injection pipe of a front nozzle assembly to the housing of a rear nozzle assembly.   
     
     
         17 . The gas turbine of  claim 16 , wherein the gas expansion part comprises at least one combustion tub that is disposed at an inlet of the casing and combusts a fuel so as to generate the combustion gas. 
     
     
         18 . The gas turbine of  claim 17 , wherein a fuel injection device that injects the fuel is installed at the at least one combustion tub, and a water injection device that injects water into the at least one combustion tub is installed at one side of the fuel injection device. 
     
     
         19 . The gas turbine of  claim 17 , wherein an air compressor is installed at the inlet of the casing so as to supply compressed air to the at least one combustion tub, and the air compressor is combined with the turbine shaft, rotates and compresses air.