Chengdu Forster Technology Co., Ltd.
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Francis turbines may be designed for a wide range of heads and flows. This, along with their high efficiency, has made them the most widely used turbine in the world. In contrast to the Pelton turbine, the Francis turbine operates at its best completely filled with water at all times. The turbine and the outlet channel may be placed lower than the lake or sea level outside, breducing the tendency for cavitation.
In addition to electrical production, they may also be used for pumped storage, where a reservoir is filled by the turbine (acting as a pump) driven by the generator acting as a large electrical motor during periods of low power demand, and then reversed and used to generate power during peak demand. These pump storage reservoirs act as large energy storage sources to store "excess" electrical energy in the form of water in elevated reservoirs.
Francis Turbine Components
1. Spiral Casing
Spiral casing is the inlet medium of water to the turbine. The water flowing from the reservoir or dam is made to pass through this pipe with high pressure. The blades of the turbines are circularly placed, which mean the water striking the turbines blades should flow in the circular axis for efficient striking. So the spiral casing is used, but due to circular movement of the water, it looses its pressure.
To maintain the same pressure the diameter of the casing is gradually reduced, so as to maintain the pressure uniform, thus uniform momentum or velocity striking the runner blades.
2. Stay Vanes
Stay vanes and guide vanes guides the water to the runner blades. Stay vanes remain stationary at their position and reduces the swirling of water due to radial flow, as it enters the runner blades. Thus making turbine more efficient.
3. Guide Vanes
Guide vanes are not stationary, they change their angle as per the requirement to control the angle of striking of water to turbine blades to increase the efficiency. They also regulate the flow rate of water into the runner blades thus controlling the power output of a turbine according to the load on the turbine.
4. Runner Blades
The performance and efficiency of the turbine is dependent on the design of the runner blades. In a Francis turbine, runner blades are divided into 2 parts. The lower half is made in the shape of small bucket so that it uses the impulse action of water to rotate the turbine.
The upper part of the blades use the reaction force of water flowing through it. These two forces together makes the runner to rotate.
5. Draft Tube
The pressure at the exit of the runner of Reaction Turbine is generally less than atmospheric pressure. The water at exit cannot be directly discharged to the tail race. A tube or pipe of gradually increasing area is used for discharging water from the exit of turbine to the tail race.
This tube of increasing area is called Draft Tube. One end of the tube is connected to the outlet of runner while the other end is sub-merged below the level of water in the tail-race.
Pelton Turbine Generator Product parameters
| HL-WJ-Francis tubine generator unit | Generator | |||||
| Turbine | ||||||
| Type | Water head(m) | Discharge (m³/s) | Speed (r/min) | Power(kw) | Efficiency(%) | |
| HL90/ D54- WJ-60 | 67.7 | 0.77 | 750 | 440 | 86 | SFW400-8/850 |
| 78.6 | 0.83 | 1000 | 557 | 87 | SFW500-6/850 | |
| 91.6 | 0.9 | 710 | 87.2 | SFW630-6/990 | ||
| 107.4 | 0.97 | 891 | 85.6 | SFW880-6/990 | ||
| 124.7 | 1.05 | 1103 | SFW1000-6/1180 | |||
| HL90/ D54 - WJ-71 | 98 | 1.3 | 750 | 1103 | 88.1 | SFW1000-8/1180 |
| 114 | 1.4 | 1000 | 1385 | 88.5 | SFW1250-6/1180 | |
| 134 | 1.52 | 1774 | 88.8 | SFW1600-6/1430 | ||
| 87.6 | SFW2000-6/1430 | |||||
| 181 | 1.76 | 2709 | 86.7 | SFW2500-6/1430 | ||
| HL90/ D54- WJ-84 | 91 | 1.75 | 750 | 1376 | 88.1 | SFW1250-8/1430 |
| 107 | 1.9 | 1769 | 88.7 | SFW1600-8/1430 | ||
| 124.5 | 2.04 | 2216 | 88.5 | SFW2000-8/1730 | ||
| 144.5 | 2.21 | 2732 | 87.2 | SFW2500-8/1730 | ||
| 170 | 2.39 | 3527 | 88.5 | SFW3200-6/1730 | ||
| 198 | 2.58 | 4256 | 87.9 | SFW4000-6/2150 | ||
| 229 | 2.78 | 1000 | 5500 | SFW5000-6/2150 | ||
| HL90/ D54- LJ-100 | 86.4 | 2.23 | 600 | 3404 4211 5263 6632 8421 10526 | 90 | SF1600-10/1730 |
| 100.3 | 2.4 | 750 | 90 | SF2000-10/2150 | ||
| 137.2 | 2.81 | 90 | SF3200-8/2150 | |||
| 158.1 | 3.02 | 90 | SF4000-8/2150 | |||
| 183.4 | 3.25 | 90 | SF5000-8/2150 | |||
| 214 | 3.51 | 1000 | 91 | SF6300-6/2150 | ||
| 250.9 | 3.8 | 91 | SF8000-6/2150 | |||
| 291.1 | 4.1 | 91 | SF10000-6/2600 | |||
| HL90/ D54- LJ-120 | 78.6 | 3.06 | 500 | 2128 | 91 | SF2000-12/2150 |
| 107.5 | 3.58 | 3404 | 91 | SF3200-12/2150 | ||
| 124.8 | 3.84 | 600 | 4255 | 91 | SF4000-10/2600 | |
| 144.8 | 4.16 | 5319 | 91 | SF5000-10/2600 | ||
| 169 | 4.49 | 750 | 6632 | 90 | SF6300-8/2600 | |
| 196.8 | 4.85 | 8421 | 91 | SF8000-8/2600 | ||
| 228.3 | 5.22 | 10522 | 91 | SF10000-8/2600 | ||
| 264.9 | 5.63 | 13158 | 90.5 | SF12500-8/2600 | ||
Chengdu Forster Technology is focused on design and manufacturing hydro turbines. The company was founded in 1956. Forster is the first Chinese state-owned enterprise and spares no effort to expand international market in 2013,At present, we have obtained orders in many water-rich areas such as Europe, Asia, South America, North America, etc., and as partners, we are qualified as long-term suppliers in many regions.
The capacity of hydro turbines is up to 5KW-300MW for a unit. The main hydro turbines are Turgo turbine ,pelton turbines, francis turbines, kaplan turbines ,bulb tubular turbines and other types of turbines.Foster also supplies governors, valves, transformers, monitoring systems, microcomputer integrated control panels and other equipment for hydroelectric power plants.
Q1, Which turbine should I choose?
Please tell me the water head, flow rate, frequency, Total power you need
, voltage, on grid or off grid operation, we will propose a solution.
Q2, Can your factory provide all the equipment for hydropower generation?
Yes, we can provide you with turbines, hydro-generators, pressure regulators, turbine wheels, control panels, transformers, monitoring systems and more.
Q3, Can you do EPC for a hydroelectric power plant?
Yes, we can provide TURN-KEY and EPC services including measurement, design, manufacturing, construction, manufacturing, commissioning, inspection, maintenance runner replacement and refurbishment/upgrade/improvement/repair/refurbishment of turbines/generators including bearings, seals For parts and key parts, we will send technicians and workers to install equipment.
Q4, Is your company a trading company or a manufacturer?
We are a manufacturer of hydro turbine generators and started to promote the international market in 2013. Our factory is located in Sichuan, where China's water conservancy and hydropower is most developed. Welcome to visit our factory in China.
Q5, How many an acceptable MOQ?
For this product, our acceptable MOQ is 1 set.
Q6, How long is the delivery time?
Delivery times range from 15 days to 6 months depending on the model you are purchasing.
Q7, Does your company have its own independent official website?
Of course, and we can see more information about our company and products on our official website.
website address: www.fstgenerator.com