All dry submersible motor pump with a concordant seal system

Details All dry submersible motor pump with a concordant seal system All dry submersible motor pump with a concordant seal system

1989-01-17

1990-10-30

Koczo, Michael

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

4174233, 41742311, 277 27, 277 34, 277 70, 277135, 415111, F04B 3900, F04B 4706

Patent

active

049665324

ABSTRACT:
The present invention relates to an all-dry submersible motor pump with a concordant seal system. In this submersible pump, there is a motor within a motor room, a vertical rotary shaft driven by the motor and connected to a pump. An air chamber is positioned between the motor room and the water pump. An airtight disc is provided between the motor room and the air chamber with a central hole for passing through the vertical rotary shaft. A concordant seal is arranged below the disc and around the central hole. The concordant seal comprises a fluid-seal and a pressure equalizer. The pressure equalizer employs a moist-isolating air envelope for equalizing the pressures on both sides of the disc, cooperates with the shaft fluid-seal to prevent the moist air from invading the motor room and thereby ensure a dry working condition for the windings of the motor.

REFERENCES:
patent: 1879625 (1932-09-01), Mendenhall et al.
patent: 1941313 (1933-12-01), Myers
patent: 2002914 (1935-05-01), Mendenhall et al.
patent: 2363420 (1944-11-01), Howard
patent: 2379648 (1945-07-01), Myers
patent: 2404783 (1946-07-01), Blom
patent: 2736825 (1956-02-01), Hill
patent: 2962612 (1960-11-01), Lung
patent: 3250927 (1966-05-01), Lung
patent: 4015633 (1977-04-01), Mandell
patent: 4537385 (1985-08-01), Bragg et al.

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