JPH0452504U

JPH0452504U -

Info

Publication number: JPH0452504U
Application number: JP9497190U
Authority: JP
Priority date: 1990-09-10
Filing date: 1990-09-10
Publication date: 1992-05-06

Description

[Brief explanation of the drawing]

第１図は本考案に係るラジアルタービン動翼の
一実施例を示した縦断面図、第２図は第１図の
−線に沿つた断面図、第３図は第１図の−
線に沿つた断面図、第４図は本考案の作用を説明
するために示した動翼出口断面相対流れの説明図
、第５図は同じく本考案の作用を説明するために
従来のものと比較して示したハブ面に沿う翼面相
対流速分布の説明図、第６図は従来のラジアルタ
ービン動翼を示した縦断面図、第７図は第６図の
−線に沿つた断面図、第８図は第６図の−
線に沿つた断面図、第９図は従来のラジアルタ
ービン動翼の問題点を説明するために示した動翼
出口断面相対流れの説明図、第１０図は同じく従
来の問題点を説明するために示したハブ面に沿う
翼面相対流速分布の説明図である。１……ラジアルタービン動翼、１１……背板、
１２……翼後縁、２０……翼圧力面、２２……ハ
ブ円筒面。 FIG. 1 is a longitudinal sectional view showing an embodiment of a radial turbine rotor blade according to the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG.
4 is a cross-sectional view along the line, FIG. 4 is an explanatory diagram of relative flow at the rotor blade exit cross section, shown to explain the action of the present invention, and FIG. An explanatory diagram of the blade surface relative flow velocity distribution along the hub surface shown in comparison, Figure 6 is a longitudinal cross-sectional view showing a conventional radial turbine rotor blade, and Figure 7 is a cross-sectional view along the - line in Figure 6. , Figure 8 is - of Figure 6
9 is an explanatory diagram of relative flow at the exit cross section of the rotor blade, which is shown to explain the problems of conventional radial turbine rotor blades, and FIG. 10 is a cross-sectional view taken along the line. FIG. 3 is an explanatory diagram of the blade surface relative flow velocity distribution along the hub surface shown in FIG. 1... Radial turbine rotor blade, 11... Back plate,
12...Blade trailing edge, 20...Blade pressure surface, 22...Hub cylindrical surface.

Claims

[Scope of utility model registration request]

The exducer start line, which is imaginary by connecting the exducer start points on the longitudinal section of the radial turbine rotor blade, is inclined toward the back plate side of the rotor blade, and the , the angle formed by the tangent to the blade centerline at the intersection of the rotor blade centerline and the hub cylindrical surface and the tangent to the hub cylindrical surface extending from the intersection to the blade pressure surface side is 90
A radial turbine rotor blade that is formed to be larger than the angle.