Turbine is for production of energy from flowing water and incoroporates number of blades on rotatable shaft from which they extend outwards

摘要

The turbine is for production of energy from flowing water (10) and incorporates a number of blades on a rotatable shaft from which they extend outwards. A stationary shaft (2) is provided in relation to which the rotatable shaft is rotatable. The turbine blades have a symmetrical cross section, so that in tidal flows they do not have to be reversed. Since the turbine blades are fixed to the rotatable shaft they are also rotatable in relation to the stationary shaft. The stationary shaft is connected by a support construction (5) with the rotary shaft. The support construction comprises two mutually rigidly connected pipes (7,8) which can be manipulated by tension cables (9). The turbine (1) blades (4) have a symmetrical cross-section and their engagement angle varies with the distance to the rotatable shaft and is smaller the nearer the distance to the rotatable shaft. The turbine is provided with active adjustment of the engagement and the rotatable shaft is provided with turbine baldes, made from one part. The turbine electricity production means comprise a rotor assembled with the rotatable shaft and a stator formed together with the stationary shaft.