Gas turbine moving blade

A gas turbine moving blade comprising:

• a platform including an interior platform cooling passage in each of a blade ventral side end portion and a blade dorsal side end portion of said platform;
• a blade fitted to said platform at each of a blade fitting portion of said blade on a trailing edge side of said blade and a blade fitting portion of said blade on a leading edge side of said blade, said blade including an interior blade serpentine cooling passage and also including cooling air blow holes provided in and around said blade, said blade serpentine cooling passage including two flow paths constructed and arranged such that when cooling air enters a central portion of a root portion of said blade the cooling air flows toward a trailing edge of said blade and also flows toward a leading edge of said blade, and each of said blade fitting portions including a fillet exterior with a curved surface;
• a recessed portion in an end face portion of each of a rear side portion of said platform and a front side portion of said platform near said blade fitting portions, said recessed portion extending in an orthogonal direction relative to a turbine axial direction;
• and
• cooling holes provided in said platform and arranged along said platform cooling passage in the blade dorsal side end portion, each one of said cooling holes having one end in fluid communication with said platform cooling passage in the blade dorsal side end portion and another end opening at an end face on the blade dorsal side of said platform,
• such that when said blade is to be cooled, cooling air is flown through said platform cooling passage, through said blade serpentine cooling passage, and out of said blade through said cooling air blow holes.

A gas turbine moving blade comprising:

• a platform including an interior platform cooling passage in each of a blade ventral side end portion and a blade dorsal side end portion of said platform;
• a blade fitted to said platform at a blade fitting portion of said blade on a trailing edge side of said blade, said blade including an interior blade serpentine cooling passage and also including cooling air blow holes provided in and around said blade, said blade serpentine cooling passage including a flow path constructed and arranged such that when cooling air enters a central portion of a root portion of said blade the cooling air flows toward a trailing edge of said blade, and said blade fitting portion including a fillet exterior with a curved surface;
• a recessed portion in an end face portion of a rear side portion of said platform near said blade fitting portion, said recessed portion extending in an orthogonal direction relative to a turbine axial direction;
• and
• cooling holes provided in said platform and arranged along said platform cooling passage in the blade dorsal side end portion, each one of said cooling holes having one end in fluid communication with said platform cooling passage in the blade dorsal side end portion and another end opening at an end face on the blade dorsal side of said platform,
• such that when said blade is to be cooled, cooling air is flown through said platform cooling passage, through said blade serpentine cooling passage, and out of said blade through said cooling air blow holes.