Micro Francis Turbine

Hydroelectric Francis Water Turbine Generator From 50 to 250kw

Model No: Francis Turbine
Output/Power: 30kw to 250kw
Rated Head:
Rated Flow:

Micro Francis turbine is suitable for water power stations with medium or low water head and flow rates. It consists of a water guiding chamber, runner, water distributor, and draft tube. The functions and conformations of these parts are introduced as follows.

1) Water guiding chamber: There are metal spiral cases and metal tanks two types of water guiding chambers are generally used. Its main function is to guarantee water enters the water distributor evenly and symmetrically in order to reduce the loss of water head. The Spiral case is the best choice for turbine behavior.

The advantages of the metal tank type are simple in conformation and low in cost, but the loss of water head is bigger than spiral case. So it is generally used in small turbines.

2) Runner: Runner is a key part of the turbine. Hydraulic energy is transferred to mechanical energy by the runner. The runner of the Francis turbine consists of vanes, runner hub, and torus. Radial water flow is changed to axial flow by vanes. The number of vanes can be 10 to 24 pieces. The usual quantity is 14 to 17 pieces. Vanes, runner hub, and torus can be made by inblock cast, or by separate cast and welding.

3) Water distributor: Water distributor has the following function.
Guide water enters the runner from the best direction. Adjust the flow rate of water in a runner to fit the outside load change. For start or stop of the generator set.

Horizontal shaft Francis turbine generator

ertical type turbine generator

Francis turbine generator unit:
A mixed hydro turbine has radical inflow into a runner, and axle outflow from the runner, which is referred to as Francis hydro turbine. The features of the Francis turbine are simple structure and reliable operation; high efficiency, suitable for water head of 10 m-70 m, which is currently one of the most widely used. There are vertical shafts and horizontal shaft Francis turbine.

francis HL hydro generator

Francis turbine is one of the most widely used turbines. It has a compact structure, reliable operation and high-efficiency range, usually from 85%-93%, and it can be used at different ranges of water flow. Our Micro Francis turbines are commonly used at a hydraulic head range of 5-300 meters.

For the Micro Francis type of turbine, water enters the runner radially, and leaves axially. Francis type turbine is divided into vertical type and horizontal type. In general, the vertical type is often used in micro water power stations.

Customer design option: Cast steel runner blades and stainless steel runner blades for option, micro Francis turbine ranging from 5kw to 200kw based on customer s local project condition and requirement. an off-grid system with voltage controller and off-grid inverter for option, grid connection with normal water turbine generator grid connection, and grid inverter option.

160kw francis turbine generator

francis water turbine generator

Horizontal shaft Francis turbine generator

Vertical shaft Francis turbine generator

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