Gas turbine combustor and gas turbine

A gas turbine combustor comprising:

• a combustion chamber having a cylindrical shape;
• a pilot burner in a central portion in the combustion chamber;
• a plurality of main burners around the pilot burner in the combustion chamber;
• a flame stabilizer covering an outside of a pilot nozzle in the pilot burner and having a tapered cylinder shape where a tip end portion of the flame stabilizer radially expands;
• a first air ejection portion adapted to eject first air in a first ejecting direction toward a tip end portion side of the first air ejection portion between one of the main burners and the flame stabilizer,
• the first ejecting direction having an axial center direction component and a radial direction component;
• a second air ejection portion adapted to circulate second air toward a tip end portion side of the second air ejection portion that is radially outside the flame stabilizer and eject the second air toward a radially outward direction;
• and a change member adapted to change a second ejecting direction of the second air ejected through the second air ejection portion to an axial center direction of the flame stabilizer,
• wherein the change member is adapted to change the second ejecting direction of the second air ejected through the second air ejection portion in the axial center direction to become an opposite direction to the axial center direction component of the first ejecting direction of the first air ejected through the first air ejection portion.