Sealing device for the drive shaft of a high pressure fluid pump

Details Sealing device for the drive shaft of a high pressure fluid pump Sealing device for the drive shaft of a high pressure fluid pump

1982-05-17

1986-05-06

Jordan, Charles T.

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

415112, 415170A, 415175, 277 3, G21D 104

Patent

active

045870764

ABSTRACT:
Sealing device for the drive shaft (27) of a high pressure fluid pump comprising a system of seals (33, 34, 35) at least one of which (33) is a hydrostatic seal. Between this hydrostatic seal (33) and the interior of the volute (21) is disposed an auxiliary seal (45) of the mechanical type. The auxiliary seal (45) separates two chambers (46a) and (46b) which can be brought into communication or isolated by a system of pipes (47) on which a valve (48) is disposed. The invention is particularly applicable to the primary pumps of a pressurized water nuclear reactor.

REFERENCES:
patent: 3574473 (1971-04-01), Gaffal
patent: 3620639 (1971-11-01), Gaffal et al.
patent: 3651866 (1972-03-01), Lileg et al.
patent: 3795460 (1974-03-01), Endo et al.
patent: 3797963 (1974-03-01), Endo et al.
patent: 4189156 (1980-02-01), Geary, Jr. et al.

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