RU2567476C2 - Windmill with self-adjustment of storm loads - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention can be used in vertical-shaft windmills. Proposed windmill with vertical rotational axle comprises blades (2), bearing vertical limiter (3) secured at swivel (7), and plate spring (4) calibrated to moderate wind. Note here that said vertical limiter allows deflection of blades from vertical position retained by plate spring at wind pressure.

EFFECT: higher reliability.

2 dwg

Description

The invention relates to the field of wind energy and can be used in wind turbines with a horizontal arrangement of a wind wheel with self-adjusting blades (vertical) under the influence of wind and counterweight. But can be used in other types of engines.

A known design of the wind turbine / 1 /, in which the blade in the working position is set due to one limiter located in a horizontal plane. However, this design is imperfect, because for stable operation of the engine, one limiter is not enough. This is due to the fact that during drilling loads and turbulence, the blade can rotate 180 ° and the engine becomes inoperative, because the return of the blade to the working position is possible only manually. Therefore, the implementation of the invention in this type of engine is undesirable

Of the known analogues, the closest to the declared in form and combination of essential features is a wind turbine / 2 / with a vertical axis of rotation, on the shaft of which in the upper part in the horizontal plane on the rods are blades diametrically opposed with the possibility of reciprocating rotation, the rotation of which is determined by two limiters . The blades in the working (vertical) and neutral (horizontal) position are installed independently under the influence of wind and counterweight. The disadvantages of this design include a very complex system of protection against drilling loads.

The claimed invention is aimed at improving the reliability of engine protection against drilling loads due to its simplification and compactness.

The invention is illustrated by drawings (Fig.1), where Fig.1b shows the design of a spring compensator represented by a persistent leaf spring 4, the elastic force of which is calibrated empirically. The reduction of the torque created by the pressure of the wind 5 (Fig. 1a) on a vertically arranged blade 2 (Fig. 1a) is achieved by the fact that with increasing pressure on the blade, the limiter 3 holding it (Fig. 1a), mounted on a hinge 7 (Fig. 1a) 1b), begins to deviate from the vertical position, depressing the spring 4. The higher the wind pressure, the more the blade deviates from the vertical (working) position 6 (Fig.1b), reducing torque and keeping it at the same level. When the wind pressure decreases, the blade returns to the vertical position under the action of the spring 4 and the counterweight 1 (Figa).

The advantage of the invention is the simplicity of manufacturing a wind turbine, high reliability and ease of operation.

INFORMATION SOURCES

1. RU 2073112 C1 Smirnov Vladimir. Wind-electric power plant. F03D 3/00. Date of publication: 02/10/1997.

2. Application RU 2011110275 A, A.S. Verin, M.A. Verin. Wind turbine with self-regulating blades. Publ. 09/27/2012, beat. Number 27.

Claims (1)

A wind turbine with a vertical axis of rotation, characterized in that in order to reduce the torque of the wind turbine during drilling loads, the vertical support is mounted on a hinge that allows the blades to deflect under the pressure of the wind from a vertical position held by a leaf spring calibrated for moderate wind.