Hydraulic multistage turbine of turbodrill

Details Hydraulic multistage turbine of turbodrill Hydraulic multistage turbine of turbodrill

1985-11-04

1987-06-30

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Working fluid bypass

4151995, 415502, 415503, 173 73, 173 78, F04D 2932, F03B 1302

Patent

active

046767169

ABSTRACT:
A hydraulic multistage turbine each stage of which comprises a stator and a rotor having rings with flow channels and hubs carrying the bladings. There are stages wherein the blades of the bladings are made with an angle of curvature of the camber line greater than an angle formed by the tangent to this line at the exit of the blading and the axis of drilling fluid flow. In a stage wherein the ring has such blades it is provided with by-pass channels arranged hydraulically parallel to the flow channel of the ring and communicating the space between this ring and an upstream ring with a space between this ring and a downstream ring for discharging part of the drilling fluid from the flow channel.

REFERENCES:
patent: 2269235 (1942-01-01), Warren
patent: 2291828 (1942-08-01), New
patent: 2744721 (1956-05-01), Hatch
patent: 3176957 (1965-04-01), Rice
patent: 3356338 (1967-12-01), Ioannesian et al.
patent: 3882946 (1975-05-01), Ioannesian et al.
patent: 3938596 (1976-02-01), Ivanov et al.
patent: 4146352 (1979-03-01), Yasugahira et al.

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