Device for providing fluid-tightness of a submersible motor and

Details Device for providing fluid-tightness of a submersible motor and Device for providing fluid-tightness of a submersible motor and

1983-06-01

1986-03-11

Husar, Cornelius J.

Pumps

Motor driven

Axial thrust balancing means for rotary pump and motor

417368, 417414, 310 87, 310 90, F04B 3902, H02K 512

Patent

active

045753156

ABSTRACT:
A method for ensuring fluid-tightness is applicable to a submersible motor for operation under conditions of total and permanent immersion, especially in oil wells and geothermal boreholes. The emergent end of the drive shaft of the motor is fitted with a rotary packing-gland. The motor casing is filled with oil which is circulated via an axial duct of the drive shaft, the impulse being produced by a disk pierced by radial ducts. A second circuit constituted by a system of ducts including radial ducts comes into contact with the packing-gland which is at overpressure with respect to the external medium. This results in a controlled leakage flow between the two portions of the packing-gland.

REFERENCES:
patent: 2002916 (1935-05-01), Mendenhall et al.
patent: 2363419 (1944-11-01), Howard
patent: 2568548 (1951-09-01), Howard et al.
patent: 2783400 (1957-02-01), Arutunoff
patent: 2790916 (1957-04-01), Hinman
patent: 3075469 (1963-01-01), Lane
patent: 3242360 (1966-03-01), Carle
patent: 3671786 (1972-06-01), Jones

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