Double- Turbine - Litostroj · 3D model of a horizontal double Francis Turbine Power house DFT...
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Double- runner Francis Turbine Contemporary Double-runner Francis Turbine With new solutions DFT in the last years became a very interesting selection for sites with specific operation requirements and limitations The Litostroj Power Group unites tradition, experience, knowledge and the development potential of several reputable European suppliers into a new technological power. Together we can offer investors complete solutions ranging from development and design to delivery of turnkey hydroelectric power plant equipment. Our advantage is in the know-how and experience of our employees. Our power is in our go-ahead spirit and adaptability. www.litostrojpower.com
Transcript of Double- Turbine - Litostroj · 3D model of a horizontal double Francis Turbine Power house DFT...
Double-runner Francis Turbine
Contemporary Double-runner Francis Turbine
With new solutions DFT in the last years became a very interesting selection for sites with specific operation
requirements and limitations
The Litostroj Power Group unites tradition, experience, knowledge and the development potential of several reputable European suppliers into a new technological power.
Together we can offer investors complete solutions ranging from development and design to delivery of turnkey hydroelectric power plant equipment. Our advantage is in the know-how and experience of our employees. Our power is in our go-ahead spirit and adaptability.
www.litostrojpower.com
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LITOSTROJ POWERLitostroj PowerLitostrojska cesta 50, 1000 LjubljanaSloveniaTel: +386 1 5824 102Fax: +386 1 5824 171E-mail: [email protected]
LITOSTROJ POWERLitostroj Hydro45, Pacifique EstBromont (Quebec)Canada, J2L 1 J4Tel: +1450 534 2929Fax: + 1450 534 0136E-mail: [email protected]
LITOSTROJ POWERCairo Office47, Ramses StreetP.O. Box 2370, Floor 2Cairo, EgyptTel: + 202 2575 39 75Fax: + 202 2575 35 36E-mail: [email protected]
LITOSTROJ POWERČKD Blansko EngineeringČapkova 2357/5, 678 01 BlanskoThe Czech RepublicTel: +420 533 309 560Fax: +420 533 309 557E-mail: [email protected]
LITOSTROJ POWERHydraulic Research Center BlanskoHorní Lhota 149The Czech Republic678 01 BlanskoTel.: +420 515 538 580Fax: +420 515 538 598E-mail: [email protected]
Printed: September 2016
3D model of a horizontal double Francis Turbine
Power house
DFT runner
The DFT, also known as a Double-Flow Horizontal-Shaft Francis Turbine consists of a single spiral casing with stay vanes, two independent guide vane apparatuses directing flow in each-side of the double-runner and two draft tubes discharging water into the tailrace. The DFT can operate with one runner only (single-runner operation) or with both runners (double-runner operation).
Reference Projects
The DFT turbine type it is of great importance for some “isolated” hydro power plants to allow turbine operation at low discharges in winter conditions to prevent freezing of the flow-passage system. Because operation is allowed down to about 15% of the unit’s maximum discharge, the DFT turbine is especially suitable for operation with very small discharge during the winter time (freezing prevention, powerhouse heating), for enabling long-term biological minimum discharge in the river or for example for smooth and high efficiency operation at part load where classical solution with one Francis runner is facing problems with pulsations due to formation of the draft tube vortex rope.
Main advantages of Litostroj Power‘s DFT
Wide operation range: down to ~15% of Qmax.• suitable for operation with very small discharge• penstock freezing prevention• powerhouse heating• enabling continuous biological minimum discharge in the river• local isolated grids
Stable operation over all operation range• smooth and high efficiency
operation at part load (pressure pulsations due to vortex rope).
Compact structure, large output power, zero axial force at full power.
Easy and time saving installation.
Environmental friendly solution for thrust bearings cooling with water.
Application range
Field of Application
DFTs application range:• heads from 40 to 250 m• discharge from 1,5 to 25 m3/s• output up to 25 MW
HPP Project Hn [m] P [kW] n [min-1] No.of units Year of supply
Misema, Canada 39,9 3080 720 1 2002Upper Mamquam, Canada 107 12940 720 1 2005Bone Creek, Canada 148,4 9574 900 2 2009Lower Clowhom, Canada 90 11456 720 1 2009Franquelin, Canada 58,1 11083 514,3 1 2010Sheldrake, Canada 63,8 12372 514,3 2 2012Val Jalbert, Canada 99 17872 600 1 2013
