Turbine

HNAC has manufactured the generators of 0.1 to 45MW in capacity which have been put into operation at present and owns the capability to manufacture the following generators:the capacity per unit up to 80MW,the stator outer diameter of generator up to 9,000mm,the speed of vertical type generator up to 750r/min,and the speed of horizontal type generator up to 1,500r/min,both the B-grade and F-grade insulation class,the terminal voltage can up to 13.8kV.HNAC manufactured 3×4,500kW water turbine generator sets,which is located in 2,868.5m height above sea level,and has successfully solved the difficult problems such as plateau corona-shielding.HNAC is equipped with the generator test station and insulation material laboratory which are advanced test facilites and testing means to make each item electrical performance of products meet designing requirements from purchasing to delivering.

1. Francis Type turbine

Francis turbines are the most common water turbine in use today. They operate in a water head from 10 to 300 meters and are primarily used for electrical power production.Penstock diameters are between 1 and 10 meters. The speed range of the turbine is from 83 to 1000 rpm. Wicket gates around the outside of the turbine's rotating runner adjust the water flow rate through the turbine for different water flow rates and power production rates. Francis turbines are almost always mounted with the shaft vertical to keep water away from the attached generator and to facilitate installation and maintenance access to it and the turbine.

2. Tubular turbine

Tubular Turbine is applicable development of the plain, hills, coastal, other low water head area, the turbine has higher economic value which include over-current capacity, efficient wide area, it is compared with the vertical axial flow turbines, high efficiency, plant excavation of a small amount of hydraulic power plant investment can save 10% -20%.

3. Axial Turbine

  Axial turbine is applicable for medium and low water head ( 3-30meter). The features of the axial turbine, when water flow in guide blade and ruuner, the formation of water flow would be changed from radial flow into axial flow. The structure of the axial turbine is very simple which is suitable for small and medium capacity, small changes of water head and load power station.

4. Pelten turbine

Pelton turbine’s usage is quite wide, water head from 100-1000 meters. The features of the Pelten turbineThe water flows along the tangent to the path of the runner. Nozzles direct forceful streams of water against a series of spoon-shaped buckets mounted around the edge of a wheel. As water flows into the bucket, the direction of the water velocity changes to follow the contour of the bucket. When the water-jet contacts the bucket, the water exerts pressure on the bucket and the water is decelerated as it does a "u-turn" and flows out the other side of the bucket at low velocity.