Variable-aperture impingement cooling structure applied to suction surface of turbine guide vane

• Main Authors: YOU RUQUAN, LIU SONG, ZHU XIAOHUA, XIE GANG, LI HAIWANG, LI XIAOLIN, CHENG RONGHUI, GUO WEN
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

The invention discloses a variable aperture impingement cooling structure applied to a turbine guide vane suction surface, which comprises a plurality of impingement sheets, any two adjacent impingement sheets are connected through a separation rib, the top of each impingement sheet is provided with a plurality of rows of impingement holes, a turbulent flow part is mounted between any two adjacent rows of impingement holes, one end of the turbulent flow part abuts against the separation rib, and the other end of the turbulent flow part abuts against the separation rib. A plurality of impact cavities are formed in the impact thin plate, an impact target surface is arranged on the side, perpendicular to the separation ribs, of the impact thin plate, and a cold air outlet is formed in one end of the impact target surface and located in the impact cavities. The method has the advantages of being simple, convenient to machine and obvious in effect, and can be applied to various turbine blade suction surface intern