Submergible pump installations
US4453892A · kind A · utility
11Cited by
23References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1981 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jul 6, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7834
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pump discharge assembly for a submergible pump installation, for use in an oil well and the like, has inlet ports for receiving liquid from a pump discharge, which ports are regulated by a back-pressure compensating valve. The valve obturates the ports upon start-up of the pump and prevents liquid being pumped unless or until the pump discharge pressure has attained a suitable level. The arrangement prevents excessive flow rate on start-up of the pump if the back-pressure is too low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.