Vertical submersible pump assembly

Details Vertical submersible pump assembly Vertical submersible pump assembly

1988-01-20

1989-06-20

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Including means for handling working fluid leakage

Leakage through seal between runner or shaft and static part

415 98, F01D 2532

Patent

active

048405353

ABSTRACT:
The invention relates to a vertical submersible pump assembly comprising a centrifugal pump assembly which comprises a centrifugal pump with a rotor and a pump casing, and a drive motor connected with the pump rotor by a drive shaft. A drain chamber surrounds the drive shaft and is sealed off in the direction of the pump rotor and the drive motor by the aid of respective shaft seals. The invention is characterized by the fact that the centrifugal pump has a dual inlet, that the pump casing forms the bottom of the drain chamber and contains the seals against the pump rotor, and that the drain chamber is shaped with a pocket extending down into the upper casing inlet.

REFERENCES:
patent: 1334461 (1920-03-01), Kerr
patent: 2257867 (1941-10-01), Thrush
patent: 2514865 (1950-07-01), Hornschuch
patent: 3457869 (1969-07-01), Janetz
patent: 4563124 (1986-01-01), Eskew
patent: 4643652 (1987-02-01), Eberhardt

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