RU2261365C2 - Support unit for pyramidal wind motor - Google Patents

Abstract

FIELD: wind power engineering; pyramidal wind motors.

SUBSTANCE: proposed support unit for pyramidal wind motor has blades in form of pyramids uniformly secured on axle. According to invention, device includes additional brackets uniformly secured on support shaft by means of thrust and radial-thrust bearing on common axle. Outer edges of brackets serve as support for lower tier of pyramids.

EFFECT: increased efficiency, reliability and safety in operation.

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Description

The invention relates to wind energy, and in particular to structures of pyramidal wind engines.

A device for the support node for a pyramidal wind turbine is known, containing blades in the form of pyramids uniformly fixed on the axis (see, for example, FR 2418996 A, class F 03 D 3/00, 11/02/1979), taken for the nearest analogue of the invention (prototype).

The disadvantages of the known devices include the low efficiency (efficiency) of the device, as well as reliability and manufacturability.

The technical result, which consists in increasing the efficiency (efficiency) of the device, as well as the reliability and economic efficiency and safety of operation of the pyramidal wind engine (LDPE), is ensured by the fact that the device of the support unit for the pyramidal wind engine containing blades in the form of pyramids, evenly mounted on the axis, according to the invention further includes consoles evenly mounted on the support shaft by means of axial and angular contact bearings in general th axis and the outer edges of the console serve as a support for the lower tiers of the pyramid.

Figure 1 shows a pyramidal wind engine (LDPE), a General view;

Figure 2 shows the cantilever part of the support node of the pyramidal wind engine (LDPE);

Figure 3 shows a view aa of figure 2.

The support unit for the pyramidal wind engine (LDPE) consists of a bearing block 1 and a cantilever part 2. The bearing block 1 includes a vertical support shaft 3, bearings 4 and 5, sealing parts 6, housing 7. The support shaft 3 is supported by a thrust roller bearing 5 and angular contact roller bearing 4. The first should absorb the vertical axial loads of the operating LDPE, and the second - mainly horizontal lateral. In figure 1 this is shown by arrows.

The industry produces these bearings in a sufficient assortment. They can be selected depending on the required capacity of the installation and taking into account its operational mode. Turning and milling operations will be required for the undercut of the support shaft 3 and the bearing seats of bearings 4, 5 in the housing 7.

The cantilever part 2 consists of a disk 8 and three cantilever trusses 9, on which three blades 10 of the LDPE 13 are supported with their outer edges. As a disk 8, a wheel disk of a car or truck can be used (depending on the capacity of the installation). A disk 8 is bolted to the shaft 3, three brackets 9 are attached to the brackets 11 through 120 ° from each other (also bolted) 9. At their ends, a spring suspension mechanism 12 is mounted on which three blades 10 of the LDPE 12 are supported.

In the literature, durable constructions of cantilever trusses are fairly well represented, their calculations are given. For our purposes, the design of a spatial truss having two-sided sides 14 in combination with racks 15, which will be able to withstand significant loads from a working LDPE, is most suitable (Fig. 1). And the top and bottom can be made in the usual way, in combination of transverse 16 and diagonal 17 elements (figure 2). Three consoles are made of corner steel. Their elements should be fastened together: both by welding, and rivets or bolts, the nuts of which are welded so that they do not unwind when the LDPE moves in an air turbulent flow.

Smooth, steady movement of LDPE during gusts of wind should be ensured thanks to the spring suspension mechanism, consisting of elastic elements (springs) 18 and vibration dampers (shock absorbers) 19.

In the upper part of the LDPE 13, between its bearing block 20 and the upper tier, a flexible joint 21, for example, from a cardan, should also be mounted.

The housing 7 of the bearing block 1 is mounted on the channels or I-beams and, if necessary, is attached from the bottom with additional posts depending on the weight of all the blades and the shaft (axis) of the LDPE.

The upper LDPE bearing block is provided by an angular contact roller bearing 20, i.e. approximately the same as bearing 4 in the lower block 1.

The gap between the console 2 and the lower part of the LDPE should be such that in case of repair work, say, when replacing bearings 4 and 5, it is convenient to get to them.

Alignment, adjustment and assembly of the metal structures of the installation must be carried out at the bottom of the rack, and then they are completely lifted and installed on the foundation with a crane.

Claims (1)

The device of the support node for a pyramidal wind turbine, containing blades in the form of pyramids, evenly mounted on the axis, characterized in that it further includes consoles evenly mounted on the support shaft by thrust and angular contact bearings along a common axis, and the outer edges of the consoles serve as a support for the lower tier of the pyramids.

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