COMPRESSOR DIFFUSER AND GAS TURBINE

• Main Authors: YAMAMOTO HIROYUKI, AOYAMA KUNIAKI
• Format: Patent
• Language: English; Japanese
• Published: 21.06.2018
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

PROBLEM TO BE SOLVED: To provide a compressor diffuser capable of reducing pressure loss of compressed air supplied to a combustion cylinder of a combustor from a compressor.SOLUTION: A compressor diffuser disposed between a compressor capable of producing compressed air by utilizing rotation of a rotating shaft, and each of a plurality of combustors disposed around the rotating shaft and capable of producing a combustion gas by utilizing the compressed air, includes a diffuser outer wall disposed between an outlet of the compressor and the combustion cylinders of the combustors and constituted to allow at least a part of the compressed air to flow into the combustors, and at least one first embedded duct opened on an inner surface of the diffuser outer wall, and communicating an enlarged flow channel defined in the inside of the diffuser outer wall and a space defined at an outer side of the diffuser outer wall. The diffuser outer wall has a fan-shaped opening with the rotating shaft as a center at a compressor side, and a width and a depth of the opening of the first embedded duct are gradually increased from the compressor side toward a combustion cylinder side.SELECTED DRAWING: Figure 2 【課題】圧縮機から燃焼器の燃焼筒に供給される圧縮空気の圧力損失を低減することのできる圧縮機ディフューザを提供する。【解決手段】圧縮機ディフューザは、回転軸の回転を利用して圧縮空気を生成可能な圧縮機と、回転軸の周りに配置され、圧縮空気を利用して燃焼ガスを生成可能な複数の燃焼器の各々との間に配置される圧縮機ディフューザにおいて、圧縮機の出口と燃焼器の燃焼筒との間に配置され、圧縮空気の少なくとも一部を燃焼器へと流入させるように構成されたディフューザ外壁と、ディフューザ外壁の内表面に開口し、ディフューザ外壁の内側に区画された拡大流路とディフューザ外壁の外側に区画された空間とを連通する、少なくとも１つの第１の埋め込み型ダクトと、を備え、ディフューザ外壁は、圧縮機側に回転軸を中心とする扇形状の開口を有し、第１の埋め込み型ダクトの開口の幅及び深さは、圧縮機側から燃焼筒側に向けて徐々に大きくなっている。【選択図】 図２