Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump
US5360290A · kind A · utility
20Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1992 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Dec 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/402
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An underground drainage facility including a drainage pump adapted to be operated if an inflow water channel is constructed as a closed channel. Overflow weirs in water channels such as rivers or the like on an inflow side are less than a maximum water level. A vertical-shaft multi-stage adjustable-vane impeller is used as a drainage pump. Consequently, even a drainage pump of a high pressure head and large capacity can perform a waiting running and accommodate a variation in a quantity of inflowing water to the drainage facility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.