| 摘要 |
PURPOSE:To improve the cooling efficiency by performing cooling of the wall surface of the burner by the combination of three cooling means consisting of film cooling, pin fin cooling and impinge cooling. CONSTITUTION:A main inner cylinder 14 provided between the head portion and tail portion of the burner 1 is formed into a dual structure consisting of an internal plate 15 and an external plate 16. Between these internal plate 5 and external plate 16 are disposed a large number of connecting members 20 consisting of pins of heat conductive materials. A large number of inlet holes 21 are formed in the external plate 16 and a large number of outlet holes 22 are formed in the internal plate 15. As shown by an arrow X in the drawing, impinge cooling and pin fin cooling are carried out by means of cooling air, and effective film cooling is obtained by cooling air branched from the outlet hole 22.
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