Pump or compressor unit
US5417544A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 1992 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | May 8, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump or compressor module for undersea use has a housing having a pump or compressor unit received therein. The pump or compressor unit has first and second impeller assemblies. The first and second impeller assemblies are driven in opposed directions about a common axis. The drive has first and second electric motors having respective drive shafts drivingly connected to the first and second impeller assemblies respectively. First and second motor casings contain the first and second motors respectively, the motor casings being within the housing. There is a seal compartment in each of the motor casings and a drive shaft seal within each of seal compartments. Barrier fluid is supplied to each of the seal compartments at a higher pressure than to the rest of the motor casing. The housing has end portions accommodating the first and a second electric motors respectively and a central portion between the end portions accommodating the impeller assemblies, and providing an inlet chamber communicating with a fluid inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.