Homemade wind turbine. Wind turbine pre-assembly. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Alternative energy sources
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The pre-assembly of the wind turbine is done below, on a small temporary column, the diameter of which is equal to the diameter of the column, on which the wind turbine will be finally installed. A temporary post (1,25 m high) is installed indoors, attaching it to the goats or to the table. A cutout is made at the upper end of the column (as shown in Fig. 2) and a riser pipe 44 is attached to it with clamps. Lubricating rings are placed on the riser and the head is put on, after which a cotter pin or pin is laid to protect the head from jumping off the riser. Then attach the generator, wings, tail and shovel.
As a cable, you can use a field telephone cable with 5-7 flexible wires.
The cable 41 is of such length that the tail and the shovel can be exactly at right angles to each other when they assume the position of fig. 3a. Do not tie the ends of the cable to the bolts. It is necessary to bend each end of the cable around the bolt with a loop and turn it back along the cable, and then braid it with 7-8 turns of copper wire and solder it with tin. With such termination, the ends of the cable do not tear and do not rust if they are painted.
Cable 42 is fixed under the same bolt 46 (Fig. 2) to which cable 41 is attached. A washer must be placed between the cable and the bolt nut from above. Next, the cable 42 passes through the rollers into the hole of the part 10, and then exits the pipe 44 down. If you pull the cable from below, then the tail will turn in its hinge and approach the side shovel. In order for it to return to its original position, it is necessary to tighten the spring 20 between the bracket 32 and the clamp 18,
Spring 20 should first be hung without tension. Then it is gradually pulled, and it will turn the tail perpendicular to the side shovel or, which also sets the tail in the same direction as the axis of the generator. The tension of the spring is checked by hanging a weight of 42 kg from the lower end of the cable 44 coming out of the pipe 1,5. In this case, the spring should not stretch. If such a load with a cable is raised to a height of 200-250 mm and then allowed to fall down, then the tail should begin to fold with a shovel. If this is not the case, then the clamp 18 should be accordingly brought closer to the axis 13 of the tail rotation. If the tail begins to fold when the load falls already from a height of 100-120 mm, then the bracket 18 must be moved further from the axis 13 and thereby tighten the spring more (spring tension is adjusted only by moving part 18).
Author: Perli S.B.
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