Francis Turbine, also called mixed flow turbine and variable pressure turbine, named after a American enginnr-J.B. Francis, belongs to the reaction type of turbines.
Francis Turbine is widely used in hydropower plants with low, middle and high water head ranging from 25m onwards to 550m commonly 30 to 300m. It has advantages such as : working stable, structure compact. Most import of all, the Francis water turbine we made would work with high efficiency of about 92% to 94.5%.
The connecting rod together with the servomotor attached to the governor to well-adjust the guide vane openning. So as to govern the turbine by controlling the quantity of water admitted to suit the instantaneous load conditions.
The material we use for Francis water turbine runner blades is stainless steel ZG0Cr13Ni4Mo which could is wearable and provent corrosion. Thus the stainless steel runner would has longer life compared with cast iron wheels.
Runner is the heart of wate turbine which is also our advantage. Because our company locates in Deyang, Sichuan, China. DEC, the Dongfang Electric Cooperation, also the largest water turbine generator manufcturer in the world is located in Deyang. We cooperate with DEC for many hydropower projects. So we would choose the best suitable and economic runner design models with high efficiency.
The metal spiral casing or scroll case is with scientific streamline design with would decrease head loss to make full use of the water potential energy.
Water Turbine Generator:
The generator of the 2 units 5000kw Francis turbine generator sets of this project is 8 poles AC three phase alternator with 750 rpm under the F/F insulation.
The stator core is silicon steel sheet 50ww310, while rotor shaft main shaft 45# forged steel.
The excitation of ERPU is thyristor excitation.
The cooling system ensures the water turbine generator working in a good condition.
2.Water Turbine Type: Pelton turbine, Francis turbine, Turgo turbine, Kaplan turbine, Tubular turbine 3.Life time:30-50 years 4.Water Head: 1):Axial turbine and Tubular Turbine: Low water head 2) Mixed flow turbine: Low & Middle water head 3) Impulse Turbine: High water head 5.Arrangement type : Vertical or Horizontal
Deyang Dongsen Hydropower Equipment Co., Ltd. is a professional comprehensive technology engineering company including the design, manufacturing, installation and maintenance of hydropower equipment as well as in the hydropower station investment with more than 20 years experience.
We have five main water turbine generator unit categories: Francis, Kaplan, Tubular, Pelton and Turgo with the quality management system of ISO9001 and TüV authentication.
If you could offer us the precise parameter like water flow(m³/s), water head(m) and some other necessary data, we could help you to choose the models of water turbine and water turbine generator with high efficiency.
We are sincerely welcome your visit and long cooperation.