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WIND POWER PLANTS. Wind turbines
INVENTION
Patent of the Russian Federation RU2272175

DEVICE FOR SOLVING THE VOLTAGE OF WIND-POWER INSTALLATION (OPTIONS)

DEVICE FOR SOLVING THE VOLTAGE OF WIND-POWER INSTALLATION (OPTIONS)

The name of the inventor: Stepanchuk Arkady Nikolaevich
The name of the patent owner: Stepanchuk Arkady Nikolaevich
Address for correspondence: 44573, Volyn region, Kamen-Kashirsky district, Radoshinka village, A.N. Stepanchuku
Date of commencement of the patent: 2003.09.26

The invention relates to the field of wind energy. The technical result consists in increasing the level of operability and ensuring safe operation of the installation, and simplifying the design, reducing its metal consumption and dimensions. The device for extinguishing the shocks of the wind power plant contains a supporting contour of the wind turbine consisting of a mast-support supported in the lower part on the foundation, support brackets with posts that receive the load from the windmill, braces from the tension and damping cables and blocks. At the top of the cable loops are fastened to the top and bottom of each of the pillars of the consoles and with the help of a movable tension block and a supporting cable are attached to the anchor embedded in the ground, the supporting and damping ropes form loops to prevent breakage, the first loops, The first loops of adjacent screeds are tightened together by second loops, at the ends of which there are movable blocks, to which is suspended on the movable block, without touching the ground, a cargo compensator located in the center of the mast-support. A second version of the device for quenching shocks by means of fixed rollers and a cargo compensator is presented.

DESCRIPTION OF THE INVENTION

The invention relates to the field of wind energy and is intended to enhance the depreciation and stabilization of the operation of a wind power plant (APU) in an air stream.

A device for damping shocks of a wind power plant is known, comprising a supporting contour of a wind turbine consisting of a mast-support supported in the lower part on the foundation, support brackets with posts receiving a load from the windmill, braces from the tension and damping cables and blocks (see, for example, SU, 1451333 A2, class F 03 D 11/00, 15.01.1989), on a set of essential features taken for the closest analogue of the invention (prototype).

The shortcomings of this technical solution include the cumbersome design and low efficiency of the plant.

The technical result, which consists in increasing the level of operability and ensuring safe operation, simplifying the design, reducing its metal consumption and dimensions, is provided by the fact that in a device for damping shocks of a wind power plant containing a supporting windmill circuit consisting of a mast bearing a bottom Parts on the foundation, support brackets with racks, receiving the load from the windmill, pull-ups from the tension and damping cables and blocks, according to the invention, at the top, cable loop-like fasteners are fastened to the top and bottom of each of the console legs and, using a movable tension block and a supporting cable, , Embedded in the ground, the supporting and damping cables form loops to prevent breakage, the first loops are formed on the adjacent drawers with the help of saddles, the first loops of the adjacent ties are pulled together by second loops with the end of which there are mobile blocks to which they are exposed on the movable block, not Touching the ground, a cargo compensator located at the center of the mast support.

At the same time, the damping and stabilizing cable is stretched between the supporting contour and the tension cable by means of fixed rollers, and a cargo compensator is suspended to the end lower part of the damping cable.

The invention is illustrated in the drawings.

FIG. 1 shows a device for quenching shocks in a wind power plant (general view); FIG.

FIG. 2 shows an embodiment of a quenching device with stationary rollers.

The device for extinguishing the shocks of the wind power plant contains a supporting contour consisting of a mast-support 1, support brackets 2, braces 3 of tension 9 and cushioning 11 cables, screed system 4, blocks 5 and cargo compensator 6.

The mast-support 1 in the cross-section can be either trihedral or tetrahedral. In the lower part, it rests on a shallow foundation (only 0.5-0.8 m below the freezing point of the ground), while in the upper cantilever part 2 it perceives the load from the "LNG" (pyramidal windmill) operating "on seven winds". The height of the mast-pillar 1 is due to a number of folded terrain, artificial structures and a number of growing trees. Therefore, it is recommended that mast 1 be arranged above them by 2-3 m, so that the air flow, bending around them, completely falls into the hollow blades of the LDPE.

If it is convenient to use flat and solid roofs of houses, workshops of enterprises, then the height of the mast-support will often be determined only by the height of the engine room (generator or pumping), above which will be located LDPE with cantilevered support part 2, provided by a system of quenching shocks.

As is known, the design of the entire APU depends on the design of the device that converts wind energy into kinetic energy of a rotating shaft. In particular, what is the power of the LDPE, such is its size. Therefore, the parameters of the cantilever part 2 protruding above the tower are determined by the length of the side of the base of each blade, that is, the radius of rotation of the LDPE rotor is 0.5-0.7 m, to the posts 13 on the cantilevers so that the LDPE can not cling to them during operation. The width of any side of the support mast 1 should be equal to the length of the side of the base of any of the blades. It is no longer expedient because of the large consumption of metal on the belts and the extended braces ("spiders", crossings) and less impossible, because the task of the mast as a support to resist compression, and it should have a certain margin of safety, so as not to develop. Wind loads, the weight of the most operating LDPE, possible icing - all this creates an extreme situation for the reference circuit 1 (cantilever 2 and mast parts 1). For this reason, the entire support circuit 1 is not welded, but bolted, which ensures its strength. Racks 13, 14 should be made of pipes of at least 4 inches or corners, and their elements are fastened from pipes of at least 2 inches, the ends of which need to be splashed to fit closely to the tubular posts, corners and rod metal.

The stability of the support circuit 1 is achieved by arranging the fasteners 3 from the tension 9 and the cushioning 11 cables located diagonally with respect to the cantilever part 2 of the support 1 and spaced from its upper posts with projections to the surface of the ground for 2-3 m. At the top, cable loop-like pullers 7 Are attached to the top and bottom of each of the legs 13 of the brackets 2 and by means of a movable tension block 8 and a supporting cable 9 which in turn is pulled and fixed to the anchor 10, the depth of the seal in the ground which must be at least 2.5 m.

Bearing cable 9, like any cable or wire, to pull, so that there is no sag ("slack"), it is impossible, plus there is fatigue in the metal. In addition, the temperature factor, for example, in the summer period of the year - all metal is lengthened. And this means the threat of significant jarring of the support contour, especially with the working two-tiered ATS during the squall winds, aggravated by the significant, harmful sagging of the tension cable ropes. 9

In this regard, the following is proposed. Wire rope 3 is made of two cables of equal thickness. One cable 9 as a carrier, and the second - cushioning 11, through which a small loop 16 is arranged to prevent breaks. Then, on each side of the reference circuit 1, i. E. On neighboring detents 3, with the help of seats 12, a certain length of the loop 4 is arranged, and then the opposing loops formed are pulled together by two new loops with the mobile blocks 5 at their ends, and they, in turn, are the last new loop to which The cargo compensator 6 is also suspended on the movable block. It must be placed so that it is precisely in the center of the support mast 1 and does not touch the ground.

Another version of the device for damping shocks of vertical objects is possible. It is shown in FIG. Here, between the supporting contour (cantilever 2 and mast parts 1) and the tension cable 9 through the fixed rollers 14, a cushioning and stabilizing cable 15 is stretched, in the end lower part of which a cargo compensator 6 is suspended. And so on all sides of the contour: how many angles as many angles Compensators 6. This option is convenient and economical in the WCC to 20 kW. And in wind pumps that pump water, especially when using mast poles, which are triangular in cross section.

Thus, a compact, simple and cheap device for dynamic damping of vibrations (vibrations, vibrations) of the APU based on LDPE has been created.

Without this device, the performance of the LDPE will be very limited. Bearings, especially in the support unit, will quickly fail, and the operation of the APU, especially in installations with a capacity of more than 15-20 kW, will be very dangerous because of the likely resonance.

The structures of the mast supports 1, equipped with devices for their automatic quenching of shocks, are suitable not only for APU on LDPE, but also for the construction of water towers, various towers,

The assembly of the metal structures of APU must be made on the rack, and then they are fully raised and installed on their foundation with a crane. This will reduce the cost of installation in comparison with other methods (masts, a falling boom or using a complex block diagram).

CLAIM

1. An apparatus for quenching shocks in a wind power plant, comprising: a wind turbine support contour consisting of a mast support supported at the bottom of the foundation, support brackets with posts receiving a load from the windmill, braces from the tension and damping cables and blocks, characterized in that At the top, cable loopbacks are fastened to the top and bottom of each of the arms of the consoles and, with the aid of a movable tension block and a supporting cable, are attached to the anchor embedded in the ground, the supporting and damping cables form hinges to prevent breakage, the first loops, The first loops of adjacent screeds are tightened together by second loops, at the ends of which there are movable blocks, to which is suspended on the movable block, without touching the ground, a cargo compensator located in the center of the mast support.

2. An apparatus for quenching shocks in a wind power plant, comprising a wind turbine support circuit, consisting of a mast bearing a support at the bottom on the foundation, support brackets with posts receiving the load from the wind turbine, braces from the tension and damping cables and blocks, characterized in that The damping and stabilizing cable is extended between the support loop and the tension cable by means of fixed rollers, and a cargo compensator is suspended to the end lower part of the damping cable.

print version
Date of publication 11.01.2007gg