SU58163A1 - Device for horizontal alignment of the twin-blades of a wind turbine - Google Patents

Description

The invention relates to devices for horizontal alignment of the moves of a two-bladed wind turbine equipped with a device (for example, according to the Eclipse system) for withdrawing it from the lee of the working position during a storm.

Two-bladed, high-speed wind turbines have minimal wind resistance if they are located in. inoperative, with both blades horizontal:

In this position, the wind wheel In the forehead to the wind there is only a significant surface end: a swing, as a result of which the wind turbine can easily withstand the strongest storm. At that, the wind turbine wafers experience so insignificant wind pressure that it would be possible to use a lightweight tower and thereby reduce the price of the entire wind turbine more if there is an attachment that automatically fixes its horizontal position of the blades.

In the proposed device for achieving the above purpose, the lo: a paste sleeve is attached with a weight with a spring counterweight hinged to it. The latter, at normal speeds, serves to dynamically balance the ballast.

In the schematic drawing of FIG. 1 is a front view of a device for horizontal adjustment of the two-bladed wind turbine swing; FIG. 2 is a transverse vertical section of it.

In the central part of the wind wheel, a washer consisting of two halves, a load / and a counterweight 2, is attached to its blade sleeve A. The middle line separating both halves of the washer is parallel to the axis of the moves of both blades.

The lower part of the washer is the load / is firmly attached to the body of the hub of the wind wheel, for example, screws 5 so that the center of the washer coiBnade with the center of the wind wheel.

The upper part of the washer-weight of 2 on two hinges is attached to the load (so that under the action of two springs 4j placed in the hinges, it can lean to the side and become at an angle of less than 95 ° to the load).

If the wind turbine is taken out of operation and the upper half

washers - counterweight 2, thanks to the springs, folded, then under the weight of the load / both wings become horizontal. With the wind, this is partly facilitated by the leaning back counterweight 2, which in such conditions represents a peculiar steering surface.

After the wind turbine was launched and the rotation of the wind wheel began, the counterweight 2 under the influence of the developing centrifugal force starts to deviate from the position shown in FIG. 2, at a greater and greater angle, overcoming the action, of the springs 4 and, finally, when the full number of revolutions of the windwheel is reached: comes to an upright position, the dynamic balance of the load 1.

The dimensions and weight of the weight and counterweight must be selected in accordance with the diameter of the wind wheel

so that their influence is sufficient for fixing both blades; in a horizontal position and together so that they do not exert too much frontal resistance to the wind when the wind wheel is in working condition.

The subject matter of the invention.

The device for adjusting B. the horizontal position of the swings of a two-bladed wind turbine equipped with a device (for example, according to the Eclipse system) to bring it out of the leeward working position during a storm, characterized by the use of a load attached to the blade hub of the cargo L equipped with a spring-loaded, pivotally attached counterweight 2 serving as a dynamic balancing the load at normal speeds.

fig- 1

fmg- 2