Combustion chamber flame tube wall surface adopting Y-shaped multi-inclined-hole cooling mode

The invention provides a combustion chamber flame tube wall surface adopting a Y-shaped multi-inclined-hole cooling mode. A plurality of Y-shaped inclined holes which are uniformly distributed and penetrate through are formed in flame tube wall plates. Each Y-shaped inclined hole comprises a main air inlet hole and three branch air film holes, and the branch air film holes are formed in each branch of a cooling inclined channel. The inlet and outlet angles and the inlet and outlet diameters of the Y-shaped inclined holes are changed, and more combinations can be obtained in the arrangement modes of the flame tube wall plates. Compared with other holes, the Y-shaped inclined holes are low in pressure loss, the air quantity of cooling is saved, the distribution of air films is more uniform,the turbulence intensity is low, the axial and circumferential cooling effects of aflame tube are uniform, and the performance of the air films on the inner wall surface of the flame tube can be obtained. According to the com