Turbine stage

Details Turbine stage Turbine stage

1988-07-01

1989-05-23

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Means, disposition or arrangement for causing supersonic...

415914, F01D 904

Patent

active

048325678

ABSTRACT:
A turbine stage which has a stationary blade set (204) followed by a moving blade set (205) which have blades (206, 207) mounted between a floor plate (201, 211) and a ceiling plate (202, 212). The surfaces of the ceiling plate (202, 212) and/or of the floor plate (201, 211) have as their meridian lines sinusoids with the maximum for the ceiling plate (202, 212) and the maximum or the minimum for the floor plate (201, 211) located in the plane between the blade sets. The curvature of the sinusoid at the outlet end of the stationary blade set (204) is calculated so as to make the tangential static pressure gradient equal to the radial static pressure gradient at the ceiling plate and/or at the floor plate equal at the outlet end of the stationary blade set (204). The disturbances are confined to restricted zones and the efficiency of the stage is thereby improved.

REFERENCES:
patent: 1632907 (1927-06-01), Losel
patent: 2846137 (1958-08-01), Smith, Jr.
patent: 4365932 (1982-12-01), Arnaudeau
patent: 4371311 (1983-02-01), Walsh
patent: 4460309 (1984-07-01), Walsh
patent: 4778338 (1988-10-01), Bessay

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