Dissolved gas augmentation with mixing chambers

Details Dissolved gas augmentation with mixing chambers Dissolved gas augmentation with mixing chambers

1997-02-25

1998-10-20

Kwon, John T.

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

F04D 2938

Patent

active

058237402

ABSTRACT:
A shrouded turbine for enhancing the levels of dissolved gas such as oxygen in water flowing therethrough. The turbine comprises a rotatably mounted runner, a stationary discharge ring and a band seal. The runner includes a crown, a band, and a plurality of blades extending between the crown and the band. The discharge ring is concentric with the band and spaced therefrom to permit relative rotation of the band and discharge ring. The band seal is disposed near an upstream edge of the band between the discharge ring and the band to limit water leakage into a band mixing chamber formed therebetween. The seal and the chamber are configured such that the band mixing chamber remains substantially flooded during turbine operation. A gas admission aperture allows gas to be injected into the mixing chamber. The mixing chamber is configured to promote mixing of the gas with the water leaking into the chamber during turbine operation. An additional mixing chamber may be provided above the crown.

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