POROUS PLATE OF GAS TURBINE COMBUSTOR, GAS TURBINE COMBUSTOR AND GAS TURBINE

To suppress deformation and damage of a distributing plate provided between an inner cylinder and an outer cylinder of a gas turbine combustor.SOLUTION: A porous plate 100 of a gas turbine combustor according to at least one embodiment is provided between an inner cylinder 47 and an outer cylinder of the gas turbine combustor, and fixedly arranged on the outer peripheral part of the inner cylinder. In the porous plate, an area of a hole arrangement area 105 provided with a plurality of through holes 110 on the side closer to the inner cylinder has a larger average value of a ligament rate, obtained by dividing a distance between the outer peripheral edges of two adjacent holes among the plurality of through holes by a distance between the centers of the two adjacent holes, than an area on the side closer to the outer cylinder.SELECTED DRAWING: Figure 6 【課題】ガスタービン燃焼器の内筒と外筒との間に設けられる整流板の変形や破損を抑制する。【解決手段】少なくとも一実施形態に係るガスタービン燃焼器の多孔板１００は、ガスタービン燃焼器の内筒４７と外筒との間に設けられ、内筒の外周部に固定配置される多孔板である。多孔板は、複数の貫通孔１１０が設けられた孔配置エリア１０５のうち、内筒に近い側の領域は、外筒に近い側の領域と比べて、複数の貫通孔のうち隣り合う２つの孔の中心間距離で該２つの孔の外周縁間の距離を除したリガメント率の平均値が大きい。【選択図】図６