Combustor, gas turbine including combustor, and combustor flow guide member manufacturing method

A gas turbine comprising:

• a compressor compressing externally introduced air;
• a combustor mixing the compressed air from the compressor with fuel to produce a mixture and combusting the mixture;
• and
• a turbine having a plurality of turbine blades rotated by combustion gases from the combustor, wherein the combustor comprises:
• a nozzle casing having a tubular shape;
• a head plate coupled to an end of the nozzle casing;
• a burner having a plurality of nozzles;
• and
• a duct assembly coupled to one side of the burner to allow the mixture to be combusted therein and combustion gases to be transferred to the turbine,
• wherein the burner further includes a flow guide member in a circular annulus shape installed between the plurality of nozzles and the nozzle casing to guide a flow of the compressed air into the plurality of nozzles, wherein the flow guide member comprises a plurality of guide segments, into which the flow guide member is divided,
• where the flow guide member is divided into the plurality of guide segments in a circumferential direction of the flow guide member, each guide segment of the plurality of guide segments being in a shape of an annular sector, the plurality of guide segments, when assembled, forming the circular annulus shape,
• wherein each guide segment comprises a pair of support plates and at least one guide vane,
• a first one of the pair of support plates disposed at one circumferential end of the respective guide segment and a second one of the pair of support plates disposed at an opposing circumferential end of the respective guide segment,
• the at least one guide vane extending in the circumferential direction from the first one of the pair of support plates disposed at the one circumferential end of the respective guide segment to the second one of the pair of support plates disposed at the opposing circumferential end of the respective guide segment.