RIVER HYDROELECTRIC MICROSTATION WITH VERTICAL TURBINE WITH MOBILE BUTTERFLY BLADES ARRANGED ON FIXED FRAMES IN STAGES

摘要

The invention relates to a river hydroelectric microstation with vertical turbine with mobile butterfly blades arranged on fixed frames in stages. According to the invention, the microstation consists of a reinforced concrete construction (1), as a turbine support, an upper platform (2) with floats, articulated with a concrete arm (1') from the shore, a turbine with a metallic shaft (3), a flange (34) for anchoring bladed modules into the water, a hub (4) holding frames for modules of blades P1...P10, some blade holding frames (5), placed at 36° in stages, fixed onto the hub by hinges blocked anti-rotation, each with two trapezoidal mobile blades (6, 6'), an upper one and a lower one, having the shape of butterfly wings, made of glass fiber with armature, and a blade (14), a thin textile synthetic tape or metallic strip, rolled on an upper roll-bobbin (10), an empty lower roll (10'), a system for driving the roll bobbins by rack pinion, a pulling wire sling and a link chain, so that, when the mobile blades (6, 6') tilt vertically upstream at 360°, the racks (50 and 50') are simultaneously actuated downwards, moving clockwise some pinions (17 and 17'), some starlike wheels (18 and 18') and a link chain (19 and 19'), unrolling the tape (14) from the upper roll (10) pulled by some wire slings (22), winding it one turn on the lower roll (10'), finally forming with the blades (6 and 6') a blade with a wider surface, which leads to a higher revolving couple upon the shaft (3), converting the flowing kinetic energy into mechanical rotation energy and moving the turbine shaft, and, through a primary wheel (23) coupled to a speed amplifier (27), at the last stage, of 1000...1500 rot/min, a mono-phased or three-phased electric generator (28) is coupled to convert the mechanical rotation energy into electric energy, which is transmitted through electric cable to the shore, to a distribution board (29) and through a cable (30) to the local or national consumer network, and after 180°, the tape (14) is wound on the roll (10).