draft tube

draft tube

[′draf ‚tüb]
(mechanical engineering)
The piping system for a reaction-type hydraulic turbine that allows the turbine to be set safely above tail water and yet utilize the full head of the site from head race to tail race.
References in periodicals archive ?
It is also to be mentioned that the loss determined by the IC was attributed to the sticking of draft tube gates and the IC in this regard also determined that the COD or inauguration did not have any nexus with the incident of gates jamming into the silt.
The second unit of Tarbela 4th extension project resumed power production as engineers of the Water and Power Development Authority (Wapda) managed to lift draft tube gates of the unit.
Authorized acceptance of work and final payment to University Mechanical under contract 17-02-W, service and draft tube air compressor upgrades at the Wells Hydroelectric Project.
Ekato draft tube circulator streamlines inside a crystalliser or draft tube reactor
The HCPS is also fitted with an auger extending out of its upper draft tube, enabling the mill to pull material above the upper draft tube and feed it into the media field below for grinding.
Revitalization processes principally influence constructional changes on guide vanes or turbine blades and lesser the draft tube and tailrace HPP region.
Spiracle CFS also reduces in-cab fumes and draft tube "road drips," keeps the engine enclosures free from oil film, and reduces engine oil consumption.
Results suggest the PLR is most effective at high liquid recirculation rates that occur with a long (568 mm) draft tube, moderate spacing (25.4 mm) between the draft tube and reactor base, and with a gas flow rate of a superficial velocity of 0.3m/s.
diameter draft tube, which serves as a discharge to the bypass tunnel.