Seawater hydraulic vane type pump
US5083909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | Nov 29, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7032
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane type hydraulic energy translating device for pumping filtered seawater and which uses seawater as a lubricating fluid. The pump is a compact, light weight design in which the bearings and certain other critical components are fabricated from corrosion resistant, low friction, high strength materials. The vanes as well as flexible side plate members are formed of these corrosion resistant materials. The pump body is formed of high corrosion resistant stainless steel. The side plates are flexible and act as wear surfaces for the ends of the vanes as well as sealing surfaces about the rotor thereby preventing leakage of seawater from high to low pressure areas. Each vane is spring biased radially outward from the rotor axis with four springs disposed within apertures located in the vane base. The vanes are generally rectangular in shape and have an outer end portion which serves as a sliding seal against a cam ring track. The rotor of the pump is uniquely splined to the shaft such that axial forces along the shaft do not translate to the rotor. A unique under vane pressurization system facilitates the passage of pressurized seawater to the base of the vane to assist in urging t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.