Turbine blade double-layer wall cooling structure with transverse vent holes

The invention discloses a turbine blade double-layer wall cooling structure with transverse vent holes, and relates to the field of turbine blade cooling structures. The turbine blade double-layer wall cooling structure is characterized by comprising an outer-layer wall, an inner-layer wall, short partitions and long partitions; and air film holes are formed in the outer-layer wall of a turbine blade, jet holes are formed in the inner-layer wall of the turbine blade, the short partitions are connected between the outer-layer wall and the inner-layer wall to divide the space between the outer-layer wall and the inner-layer wall into at least two cooling units, , the transverse vent holes are formed in the short partitions, and a cavity defined by the inner-layer wall is divided into at least two air inflow cavities by the long partitions. The wall attachment of a cooling air film is improved, and the cooling efficiency of the air film is improved; the flow of cooling gas of the air filmholes in the upstream an