Hydraulic turbine for enhancing the level of dissolved gas in water
US6247893A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2000 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Aug 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49337
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbine, adaptable to enhance the levels of dissolved gas such as oxygen in water flowing therethrough, includes a rotating shaft and a runner secured to the shaft. The runner includes a crown, a band and a plurality of runner blades. Each blade is defined by an inner edge and a distal outer edge, a leading edge and a trailing edge separated by a water directing surface. At least one blade includes an integrally formed gas passage in fluid communication with a gas admission aperture in the crown. The gas passage may extend to the trailing edge. Alternatively, the gas passage may extend to the band, and the band then includes a gas discharge means. A method for making a blade having an integral gas passage includes securing a member with a first groove to an insert with a cooperating second grove. A turbine having a hub and a plurality of rotatable blades includes a plurality of groups of gas passages extending to at least one exterior region of the hub associated with a blade. The blade includes a gas admission passage extending to an edge region of the blade. A flexible boot is provided on the blade to fluidly couple the blade with at least one selected gas passage depending on …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.