Sealing device for the drive shaft of a high pressure fluid pump
US4587076A · kind A · utility
10Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1982 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | May 17, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D13/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.