JPS5965907U

JPS5965907U - Turbine exhaust diffuser

Info

Publication number: JPS5965907U
Application number: JP16121782U
Authority: JP
Inventors: 佳史加藤
Original assignee: 富士電機株式会社
Priority date: 1982-10-25
Filing date: 1982-10-25
Publication date: 1984-05-02

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来における排気ディフューザの構成断面図、
第２図は第１図におけるディフューザ人　　　、目部分
の断面方向の気流速度分布図、第３図は第１図のディフ
ューザにおける流れに沿った各地点の速度分布の推移図
、第４図はこの考案の実施例の構成断面図、第５図はこ
の考案の作用を説明するための第４図における各地点で
の排気流の速度分布推移図である。２・・・最終段動翼、３・・・車室、４・・・ディフュ
ーザ、６．６０・・・排気通路、７・・・ベーン、９・
・・気流吸込路としてのスリット、Ａ・・・主気流、Ａ
′・・・漏れ気流、Ｂ・・・吸込み気流。Figure 1 is a cross-sectional view of the configuration of a conventional exhaust diffuser.
Figure 2 is a diagram of the airflow velocity distribution in the cross-sectional direction of the diffuser eye in Figure 1, Figure 3 is a diagram of the change in velocity distribution at each point along the flow in the diffuser of Figure 1, and Figure 4 is a diagram of this FIG. 5 is a cross-sectional view of the structure of an embodiment of the invention, and is a velocity distribution transition diagram of the exhaust flow at each point in FIG. 4 for explaining the action of this invention. 2... Final stage rotor blade, 3... Vehicle interior, 4... Diffuser, 6.60... Exhaust passage, 7... Vane, 9...
...Slit as airflow suction path, A...Main airflow, A
′... Leakage airflow, B... Suction airflow.

Claims

[Scope of utility model registration request]

(1) In an exhaust diffuser installed in series from the final stage to the casing so as to define the exhaust passage of the turbine, a cylindrical vane is installed along the inner peripheral surface of the diffuser body with a small gap from the wall surface. is installed between the vane and the inner wall surface of the diffuser body, and the leakage fluid passing through the remaining gap is guided so as to direct its inlet toward the remaining gap between the tip of the turbine rotor blade and the casing wall surface. A turbine exhaust diffuser, characterized in that a leakage fluid exhaust passage is formed.

(2) In the exhaust diffuser according to claim 1, the vane is divided into a plurality of sections along the axial direction, and there is a gap between the inner and outer passages of the vane between the adjacent sections. A turbine exhaust diffuser characterized in that a communicating airflow suction passage is formed.