Small 500kw low rpm water electric generator  turbine

Kaplan turbine is a kind of turbine suit to low water head 3-45 meters, and with certain big flow, normally divided into fixed blades and adjustable blades turbine. Main components including: runner, draft cone, water chamber, guide vane, bearing, and main shaft. The spiral case could be steel or concrete. The runner diameter we can manufacture is from 80cm to 4meters, with rated output 50Kw to 20Mw.
Turbine units normally be vertical shaft arrangement. Generator equipped with same or different shaft, with Anyway, they will share the same rotating speed. If specially required, a speed increase gear could be equipped between turbine and generator in order to smaller the generator size.

The commonest orientation currently being installed in most of country (at least by Renewables First) is vertical axis. Vertical-axis Kaplan’s have the advantage of requiring the smallest footprint or land-take. The Kaplan turbine is built into the concrete structure, with the inlet volute (basically a snail shell shaped pipe that wraps around the inlet guide-vanes and distributes the water equally around the whole circumference) and draft tube cast into the concrete at the construction phase. So critical is the perfect geometry of the intake volute and draft tube that it is normal practice for the turbine manufacturer to supply the wooden formwork for these parts to be used by the civil engineering contractor.
Horizontal axis or ‘S-turbines’ and bulb turbines are technically slightly more efficient than vertical axis Kaplans because the inlet flow does not have to change direction so should have lower hydraulic losses. In reality there is no discernible difference, so the decision on the orientation is normally made through choice of supplier and price. S-turbines do require a larger system footprint which can be a disadvantage in space-constrained sites.

The inlet guide-vanes can be opened and closed to regulate the amount of flow that can pass through the turbine. When fully closed they will stop the water completely and bring the turbine to rest. Depending on the position of the inlet guide-vanes they introduce differing amounts of "swirl" to the flow, and ensure that the water hits the rotor at the most efficient angle for the highest efficiency. The rotor blade pitch is also adjustable, from a flat profile for very low flows to a heavily-pitched profile for high flows . This adjustability of both inlet guide-vanes and rotor blades means that the flow operating range is very wide (a characteristic from the inlet guide-vanes) and the turbine efficiency is high and the efficiency curve very flat (a characteristic from the adjustable rotor blades allowing optimum alignment of the blade to the oncoming flow).
The nose cone on a Kaplan turbine is important hydro-dynamically to reduce losses and prevent the formation of a core ‘rope vortex’, and also provides the space for the complex blade pitching mechanism inside. The draft tube is also a critically important part. Although a static fabricated part, the geometry of the draft tube is carefully designed to extract any remaining kinetic energy from the flow by reducing the water pressure after the rotor.

There are variants of Kaplan turbines that only have adjustable inlet guide-vanes or adjustable rotor blades, which are known as semi-Kaplan’s. Although the performance of semi-Kaplan’s is compromised when operating across a wide flow range, for applications where the flow does not vary much they can be a more cost-effective choice.
Kaplan turbines could technically work across a wide range of heads and flow rates, but because of other turbine types being more effective on higher heads, and because Kaplan’s are relative expensive, they are the turbine of choice for lower head sites with high flow rates. Typically they are used on sites with net heads from 1.5 to 20 metres and peak flow rates from 3 m3/s to 30 m3/s. In the UK this tends to be on lowland rivers with low heads (1.5 to 5 metres) and relatively high flow rates (up to 30 m3/s). Such systems would have power outputs ranging from 75 kW up to 1 MW.
The smallest good quality Kaplan turbines available have rotor diameters of 600 mm, though these tend to be prohibitively expensive, at least a very low heads, so generally speaking the smallest rotors are 800 mm. The largest rotors available have 3 to 5 metre diameters. For even larger sites multiple-turbines tend to be used rather than increasing the diameter further. Kaplan turbines are available in three basic configurations; vertical axis, horizontal axis (also called S-turbines) and bulb turbines.

Why choose us?

1.More than 30 years of industry experience, install commissioning more than 150 equipment each year

2.Provide complete proposal for hydro power plant from water to wire

3.Abundant foreign power plant project implementation experience

4.Design and manufacture of hydro power generator with voltage 400V

Hongya Power Generating Equipment To Utilities Limited, is founded in May, 2003 as a professional manufacturer of water turbine generator set. The company is located in a great place which surrounded by Mount WaWu and Emei, a place closed to many famous scenic spots such as Leshan Giant Buddha. The total company land is about 70000 Square meters, construction part 35000 Square meters. The employee is about 200 workers, which the R&D part is 25%.

We get more than 100 sets machines for manufacturer process including processing machine and test machine. We can manufacturer Francis turbine, pelton turbine, turgo turbine, Kaplan turbine, synchronous generator, speed governor, brushless excitor, hydraulic hardware etc with unit turbine generator set capacity under 20MW.

The company get 11 patents and many awards from the official authority, we also get certificate of QMS ISO9001 (2008).Our company get good technical and development cooperation with Sichuan university, Xihua university and Sichuan provincial machine R&D research. We are subcontractor of some famous water turbine generator manufacturer such as DEC: Chongqing Water Turbine Works co., LTD, etc.

We get good technical support from university and the contractor which enable us a better manufacturer with strong technology skill and rich project experiences.

Till now, HPGE offer a comprehensive range of hydroelectric power plant solutions that cover the entire scope of service including: Small hydro power project consultant; Site management studies; equipment Design; Hydroelectric equipment Manufacture; Project management; Installation guidance; Commission and start operation; Operation guidance; Hydroelectric equipment maintenance.

Products of HPGE are widely used in all around China, we cooperate with more than 300 hydro power plants with more than 600 turbine generators sets , including Francis turbine generator set, turgo turbine generator set, pelton turbine generator set, Kaplan turbine generator set, areas covering more than 20 provinces of China and also international markets such as Russia, Belarus, Turkey, Albania,Vietnam Indonesia, Nepal, Laos, Sri Lanka, Cuba and Brazil etc.