RU2438038C2 - Carousel-type wind wheel module - Google Patents

Abstract

FIELD: power industry. ^ SUBSTANCE: carrousel-type wind wheel module contains fragment of power column with vertical rotation axis, bearing assembly with two-end shaft, which is fixed on it, the axis of which is perpendicular to module rotation axis, and ends are taken to diametrically opposite sides of fragment of power column, and a pair of blades screwed on shaft ends, which are developed one relative to another in the pair through 90 and rigidly fixed on the shaft by means of locking plates. Both blades together with shaft and locking plates form stiff coupled blade. Locking plates are made in the form of a pair of similar sector plates with an angle of 90 at the top of sector, square holes near it for connection to the shaft, and a pair of holes for connection between itself and the blade. Between sector plates there rigidly installed is gear and flexible buffer. In bearing assembly above the first shaft parallel to it there installed is the second shaft forming together with the second pair of blades and locking plates the second stiff coupled blade. Blades and locking plates of both coupled blades, which are located on one side of fragment of power column, are installed mirror-like in relation to each other, and gears of locking plates on each side of fragment of power column are constantly engaged. ^ EFFECT: reducing specific metal consumption of wind wheel at improving operating efficiency. ^ 5 dwg

Description

The invention relates to wind energy, namely, the device of wind turbines of wind power stations, including in the mobile version for power supply of facilities located at a considerable distance from power lines, as well as generatorless installations for pumping water and other fluid.

A known carousel-type wind wheel module [1], containing a power column fragment with a vertical axis of rotation, on which four frames are rigidly fixed, pairwise arranged on diametrically opposite sides of the power column fragment, and blades articulated on the frames, forming under the influence of their own mass on one side sailing canvas, and on the opposite side - blinds under the action of oncoming air flow, letting the latter through to the back of the frame, while the mutually opposite blades on both unrelated and fixing them in the sailing position of the frame elements is provided.

This design provides a significant increase in torque on the shaft of the wind turbine, but creates impacts of the blades on the frame at the moment of their fixation in the sailing position, which leads to an increase in dynamic loads on the structural elements and the occurrence of an unacceptable noise level.

A known carousel type wind wheel module [2], containing a fragment of the power column with a vertical axis of rotation, a bearing assembly with a double-end shaft, the axis of which is perpendicular to the axis of rotation of the module, and the ends protrude diametrically opposite sides of the fragment of the power column, a pair of blades for interaction with the wind, screwed onto the ends of the shaft, rotated one relative to another at an angle of 90 ° and rigidly fixed on it by means of retaining plates, with the blades in conjunction with the shaft and supporting bars form a rigid paired blade, having the possibility of alternating oscillations around the axis of the bearing assembly.

The possibility of self-installation of the blade plane on the sailing side of the module is close to vertical, and on the vane side is close to horizontal by applying wind to the twin blade on the one hand and counteracting its mass on the other, achieved by this design eliminates the need for stops for the blades on the base parts of the wind wheel , eliminates dynamic loads on them and ensures noiseless operation of the wind power installation.

However, the direct dependence of the torque on the module shaft on the geometrical dimensions of the paired blade and its mass (formula 10 of the prototype) leads to the need to increase the ballast load at high wind speeds and, therefore, to increase the specific metal consumption of the wind power installation (the ratio of its mass to the magnitude of the torque on output shaft), which reduces the efficiency of work in areas with a high average wind speed.

The claimed object contains a fragment of the power column with a vertical axis of rotation, a bearing assembly with a double-end shaft rigidly fixed on it, the axis of which is perpendicular to the axis of rotation of the module, and the ends extend onto the diametrically opposite sides of the fragment of the power column, and a pair of blades for interaction with the wind screwed onto the ends shaft, rotated one relative to the other in a pair of 90 ° and rigidly fixed to the shaft by means of locking bars, with both blades in conjunction with the shaft and locking bars in the image They have a rigid twin blade with the possibility of alternating oscillations around the axis of the bearing assembly.

The locking strips are made in the form of a pair of identical sector plates with an angle of 90 ° at the apex of the sector, with square holes for communication with the shaft and at least a pair of holes closer to the arc part of the sector for communication with each other and with the blade, and between sector plates in their the gears are fixedly mounted in the square holes and an elastic buffer is installed in the area of the mounting holes, the peripheral edges of which protrude beyond the edges of the sector plates, while in the bearing assembly above the first shaft, a second a swarm shaft, forming, together with the second pair of blades and retaining strips, a second rigid twin blade, blades and retaining strips of both twin blades located on one side of the power column fragment are mirror-mounted to each other, and the gears of the retaining strips on each side fragments of the power column are in constant engagement.

Technical advantages of the claimed object compared to the prototype are as follows:

- the presence in the module of a second rigid twin blade located above the first parallel to it in combination with the presence of a pair of identical gears rigidly fixed at both ends of its shaft in the locking bars and in constant engagement with the corresponding gears of the first twin blade, provides the possibility of counter-alternating oscillations of each paired blades around the axis of its shaft, which ensures the disclosure of adjacent blades on the sailing side of the module in a flat sailing canvas and folding them "in appear below "on the module side of the vane;

- the implementation of the locking strips in the form of a pair of sector plates with an angle of 90 ° at the apex, rigidly connected with the shaft of the twin blades and carrying an elastic buffer sandwiched between them, the peripheral edges of which extend beyond the edges of the sector plates, limits the amount of oscillation of the twin blades at an angle of 90 ° and compensates dynamic impacts of the locking strips against each other without mutual contact of adjacent blades in extreme positions when they are folded "in the book" on the vane side of the module.

The combination of these technical advantages compared with the prototype provides a technical result, which consists in ensuring the ability of the claimed facility to operate in areas with high wind speeds without additional ballast weight on twin blades and, on this basis, in reducing the specific metal consumption of wind power plants and the corresponding simplification of their design.

The drawings illustrate the module of a carousel type wind wheel, where Fig. 1 shows its general view frontally to the direction of the wind; figure 2 and 3 are sections along aa and bb in figure 1 from opposite sides of a fragment of the power column; figure 4 is a frontal view of the retaining strips of the twin blades in the absence of wind and figure 5 is a section along BB in figure 4.

The carousel-type wind turbine module contains a power column fragment 1 with a vertical axis of rotation, a bearing assembly with a double-end shaft 2 rigidly fixed on it, the axis of which is perpendicular to the axis of rotation of the module, and the ends extend to the diametrically opposite sides of the power column fragment 1, and a pair of blades 3 and 4 for interaction with the wind, screwed on the threaded shanks 5 of the shaft 2, deployed one relative to the other in a pair of 90 ° and rigidly fixed on the shaft 2 by means of retaining bars 6 on square grooves of the shaft and 2 adjacent to its threaded shank 5.

Both blades 3 and 4 in conjunction with the shaft 2 and retaining strips 6 form a rigid twin blade 8, with the possibility of alternating oscillations around the axis of the bearing assembly within 90 °.

The locking strips 6 are made in the form of a pair of identical sector plates 9 with an angle of 90 ° at the top of the sector, square holes 10 at it and at least two holes 11 and 12 closer to their arc part, through one of which the sector plates 9 are pulled together, and through another, additionally with an end plate 13 of each blade 3 and 4.

Between the sector plates 9 in the square holes 10, a gear 14 with a square hub 15 is installed, in which a central square hole 16 is made for a nozzle on the square groove 7 of the shaft 2, and in the area of the holes 11 and 12 an elastic buffer 17 is installed, for example, in the form of a rubber plate wherein, the sector plates 9 are pulled together by a bolt 18, through the hole 12 by the bolt 19, the lock bars 6 are additionally connected with the end plates 13 of the blades 3 and 4, and the peripheral part of the buffer 17 extends 15-20 mm beyond the outline of the sector plates 9.

In the bearing unit of fragment 1 of the power string above the first shaft 2 and parallel to it, a second shaft 20 is installed, forming with its pairs of blades and retaining strips a second rigid twin blade 21, while the blades 3 and 4 of the twin blades 8 and 21 located on one side of the fragment power columns are mounted in relation to each other in a mirror manner, and adjacent gears 14 of the locking bars 6 of the twin blades 8 and 21 are in constant engagement.

In calm weather, the module of the wind wheel is stationary, and the blades 3 and 4 of the twin blades 8 hang under the action of their own mass down from the axis of its rolling, being located symmetrically relative to the axis of rotation of the module and forming an angle close to 45 ° with it, while the blades 3 and 4 additional twin blades 21 are mirrored and stably held in this position by gears 14 that are in constant engagement (see figure 4).

When wind occurs, the blades 3 of both paired blades 8 and 21 on the sailing side of the module turn in opposite directions, forming a sailing canvas frontal to the wind direction, and on the opposite side of the blade 4 fold “into a book”, freely passing air flow to the back of the module.

If the balancing of the paired blades 8 and 21 is unbalanced, the retaining strips 6 together with the blades 3 and 4 can deviate in the absence of wind from a vertical position (Fig. 4) to one side or the other by an angle of up to 45 °, however, when a wind occurs due to the location of the elastic buffers 17 between the sector plates 9, under its influence, the twin blades 8 and 21 are self-installed in the normal operating position (FIGS. 2 and 3), and the torque on the fragment of the power string will be determined by the difference in the total wind pressure on the blades 3 and 4 per steam meat and vane module sides.

Information sources

1. Description of the invention to the USSR copyright certificate No. 1537885 of January 23, 1990, IPC F03D 3/00.

2. Description of the invention to the patent of the Russian Federation No. 2365782 dated 05.12.2007, IPC F03D 3/00 (prototype).

Claims (1)

A carousel-type windmill module containing a fragment of a power column with a vertical axis of rotation, a bearing assembly with a double-end shaft rigidly fixed on it, the axis of which is perpendicular to the axis of rotation of the module, and the ends extend to the diametrically opposite sides of the fragment of the power column, and a pair of blades for interaction with the wind, screwed onto the ends of the shaft, rotated one 90 ° relative to the other in a pair and rigidly fixed to the shaft by means of locking bars, with both blades in combination with the shaft and stop the planks form a rigid paired blade having the possibility of alternating vibrations around the axis of the bearing assembly, characterized in that the retaining planks are made in the form of a pair of identical sector plates with an angle of 90 ° at the top of the sector, with square holes for communication with the shaft and at least at least, a pair of holes closer to the arc of the sector for communication with each other and with the blade, and between the sector plates in their square holes the gear is fixedly mounted and an elastic buffer is installed in the area of the mounting holes p, the peripheral edges of which protrude beyond the edges of the sector plates, while in the bearing assembly above the first shaft, a second shaft is installed parallel to it, forming, together with the second pair of blades and retainer strips, a second rigid twin blade, blades and retainer strips of both paired blades located on one side of the power column fragment are mounted in relation to each other in a mirror manner, and the gears of the locking bars on each side of the power column fragment are in constant engagement.

Images