UA28687U - Wind-driven power plant - Google Patents

Abstract

A wind-driven power plant has two Savonius rotors with one vertical axis of rotation placed inside rotary cylindrical concentrating baffle with windows at side surface arranged symmetrically with angular opening of 80-110 DEGREE , concentrating baffle placed between the upper and the lower concentrators of wind flow arranged as flattened cones with acute angle connected to each other rigidly byvertical supports placed on platform. A device for directing by wind flow is kinematically connected to rotary device of the concentrating baffle and installed on the upper concentrator of wind flow. Two Savonius rotors, the upper and the lower ones, rotate in opposite directions and are placed on axles inserted one into another, first of those is a hollow pipe and the other one is arranged as rod inserted to the first one and centered in it by means of bearings.

Description

Description of the invention

The useful model refers to the field of wind energy, namely - wind energy installations. 2 A known model of a wind engine containing an impeller, which is supplied with three blades evenly located in the horizontal plane of the wind wheel at an angle of installation to the tangent circle, in which flaps in the form of half cylinders are additionally installed on the edges of the flow rise, which are an extension of the wing profile, and between two adjacent blades created confusing channels |1).

The disadvantage of this design is that, despite all its complexity, it is not efficient enough due to the obvious 70 "shadowing" of the rotor from the oncoming wind flow, which constantly interacts with the rotor of the wind engine and has a stopping effect.

The closest to what we offer is a wind power plant containing a multi-section rotor

Savonius with a vertical axis of rotation, which is located inside a rotating cylindrical deflector-concentrator with windows on the side surface, made symmetrically with an angle of 80-1102, and the deflector-concentrator is located between the upper and lower concentrators of the wind flow, made in the form of truncated cones with an acute angle , which are connected to each other by rigidly vertical supports located on the platform, and on the upper concentrator of the wind flow, a device for orientation according to the wind flow is installed, kinematically connected to the rotary device of the deflector-concentrator |21.

The disadvantage of this design is that each of the blades rigidly fixed in a vertical position during rotational movement in accordance with the oncoming wind flow, despite the presence of a concentrator deflector, receives the pressure of the wind flow on its full reverse (non-working) surface, which counteracts the aerodynamic rotational forces and partially reduces the efficiency of the formation of a twisting moment on the axis of rotation of the rotor.

The basis of the improvement of the design is the task of ensuring increased efficiency of the use of 29 wind power plants, that is, ensuring an increase in the efficiency of the conversion of the energy of the oncoming wind stream into electrical energy produced by a generator, which in turn is set in motion by means of torque transmission, which turns, due to the drive of the wind power plant.

The task is solved by using two sections with Savonius rotors as part of the wind energy installation, the rotation of which in the sections is carried out in the opposite direction, which ensures - a double speed of mutual rotation of the axes of the upper and lower rotors and as a result, in turn, ee) leads to an increase in production of electric energy by a generator with the same geometric dimensions of the composite structural elements of the wind turbine, as well as the use of blades in the design of the rotors that are rotatable relative to the axis of rotation of the rotors in the horizontal plane, which ensures their transition from the vane state (with an oncoming air flow) to the working state and reduces counteracting the wind flow running into

From the reverse (non-working) plane of the blades, even if there is a rotating cylindrical deflector-concentrator in the design of the wind turbine.

In addition, each of the rotor blades has vertical divisions located along the inner, working surfaces of the blades evenly along their entire length, and the outer surfaces of the blades have a smooth surface, which "leads to an increase in the retention and transfer of the force of the oncoming air flow to the blades in the working state of Z 70, and vice versa - to reduce this force when the blades are in the vane state. c The essence of the useful model is explained by graphic materials, where Fig. 1 shows the general view of the wind power plant, made in axonometry; Fig. 2 shows the frontal view of the wind power plant; Fig. 3 shows the section of the upper section of the wind plant along the line A-A; Fig. .4A shows a cross-section of the lower section of the wind power plant along line B-B; Fig. 5 shows a diagram of blowing by the wind flow 15 of the wind power plant, top view; Fig. 2 shows a frontal view of the upper section o of the wind power plant with a partially cut rotary cylindrical deflector-concentrator, and (ee) Fig. 7 shows the arrangement of vertical partitions on the rotary blade, which is in the vane state.

Ф The wind power plant includes a support truss 1, on which the lower concentrator of the wind (ee) 50 stream 2 is located, on the support truss 1 vertical supports З are fixed, on which the upper concentrator of the wind stream 4 and the wind direction device of the rotary deflector-concentrator 5 are located with a drive on the rotary device of the deflector-concentrator 6, the deflector-concentrator 7, in the middle of which there are two sections with Savonius rotors - the upper section 8 and the lower section 9 on the axes in the bearing supports 10 and 11, respectively (see Fig. 1). The lower end of the rotor axis, located in the lower section, rests on the concentrator 99 of the wind flow 2 through the bearing assembly 12. On the rotor axis of the upper section 13, three rotary blades 14, 15, and 16 are fixed, which are equipped with vertical partitions 17 located along the inner, working surfaces of the blades evenly along their entire length. The rotating blades rotate around the axes 18, located in the same horizontal plane, adopting a vane or working state, depending on the interaction with the oncoming wind flow. In the operating state, the blades rest with their lower back surfaces on the limiting stops 60 19. These stops prevent the deviation of the blades from the vertical position during the operating cycle and keep the blades in this state until they are turned into the vane position.

A wind power plant works like this. The wind flow blows the working surfaces of the rotor blades

Savonius of the upper section 8 and the lower section 9. The rotors of the sections are located inside the rotating cylindrical deflector-concentrator 7, which directs the wind flows on the blade, which, in turn, begin to rotate 62 around their axes. The deflector-concentrator of the wind flow 7 also closes the surfaces of the blades from the action of the oncoming wind flow during their movement towards the wind flow when in the vane state, thereby ensuring a more efficient conversion of the energy of the wind flow into the mechanical energy of the rotor of the working blades moving along the flow, and therefore, a higher speed of rotation of the rotors, a higher coefficient of power extraction from the wind flow and, accordingly, a higher torque on the shafts. The device for orientation according to the wind flow of the rotary deflector-concentrator 5 provides tracking of the change in the direction of the wind flow by the deflector-concentrator 7 during the operation of the wind power plant. Horizontally located upper 4 and lower 2 wind flow concentrators, made in the form of truncated cones with a small height and an acute angle with an insignificant height of the sections of the wind installation and their large diameter, additionally increase the speed of the oncoming wind flow by 7/0, due to the reduction of the swept area and such thereby additionally increasing the effective characteristics of the proposed design of the wind power plant.

The proposed design of the wind power plant will increase the efficiency of converting the energy of the wind flow into mechanical rotational energy, as well as increase the value of the coefficient of power extraction from the wind flow by the Savonius rotors, reduce the load on the axis of the rotors, increase the 7/5 Coefficient of useful action in general and the reliability of the wind power plant .

Information used: 1. Wind engine: Patent for the invention 12414 Ukraine, Cl. РГО3О3/00, РО303/06; Announced on 11/16/93; Publ. 28.02.97, Bull. MO, - 2p., With illustrations. 2. Wind power plant: Declaratory patent for an invention 35530 Ukraine, Cl. ГО3О3/00, ГОЗ0О3/06;

Announced on 05.10.2000; Publ. 15.03.2001, Bull. Moe2, 2001 - Zs., 2 illustrations. (prototype).

Claims (5)

The formula of the invention 1. A wind power installation containing two Savonius rotors with one vertical axis of rotation, located inside a rotating cylindrical deflector-concentrator with windows on the side surface - made symmetrically with a deflection angle of 80-1102, a deflector-concentrator placed between the upper and lower concentrators of the wind turbine flow, made in the form of truncated cones with an acute angle, connected to each other by rigidly vertical supports located on the platform, the wind flow orientation device, which is kinematically connected to the deflector-concentrator rotary device and installed on the upper wind flow concentrator, which differs in that it has two Savonius rotors - lower and upper, which rotate in opposite directions and are located on axes nested one inside the other, the first of which is an empty tube, and the other is made in the form of a rod inserted into the first , and centered in it with the help of bearings. co 2. Wind energy installation according to claim 1, which differs in that both Savonius rotors have a Z-bladed construction at angles of 120 9 blades relative to each other and are installed in deflectors-concentrators with the possibility of rotation in opposite directions (clockwise and counterclockwise) . C. A wind power plant according to claim 1 or according to claim 2, which differs in that all the rotor blades have vertical divisions, located along the inner working surfaces of the blades evenly along their entire length, and the outer surfaces of the blades have a smooth surface. shsh c 4. A wind power plant according to any of claims 1-3, which is characterized by the fact that all rotor blades are capable of rotate around their horizontally located support axes by an angle of up to 902 from the vertical "" (working) state to the horizontal depending on their relative location relative to the deflectors-concentrators during the passage of the air flow and have limit resistances in the working state. 5. A wind energy installation according to any of claims 1-4, which is characterized by the fact that the ratio of the chord of the blade to the height of the blade profile (measured inside the horizontal projection of the blade) has a value from 8 to 10, which is much greater than the similar ratio of the classic design of the blades Savonius. (22) o 50 that c 60 b5