A cooling system for a turbine airfoil of a turbine engine having a plurality of vortex cooling chambers positioned in an outer wall defining a suction side of the turbine airfoil. In accordance with the present invention, a single sheet of foldable material is cut and scored to define a container blank. When a tube joint is used in a high temperature atmosphere, even if any force acts on a fluid tube in the direction to cause detachment from the tube joint due to any external force or the pressure fluid flowing through the inside of the tube joint, then the fluid tube and a connecting member inserted into the body are reliably prevented from disengagement. The adjustment specification for parametrizing the integrated circuit is stored in the memory and activated by the parametrization data signal.