Automatic level-regulating sluice
US4797027A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Jun 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2713
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The sluice oscillates about a shaft (16) in order to control the level of a downstream reach (4) to occupy a reference level as defined by the position of an opening (36) for connection to the atmosphere and suitable for being closed by a needle (38) carried on a float (40). The plate (6) is driven by a caisson (18) which is immersed in the upstream reach (2) and which contains a quantity of water (28) that is increased by sucking air via a hydraulic Venturi (50) driven by the flow of water between the two reaches. The displacements of the float (40) control the pressure reduction which is actually applied to said caisson in such a manner as to obtain the desired level control. The invention is applicable to controlling irrigation networks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.