CN102834607A

CN102834607A - Wind generator tower

Info

Publication number: CN102834607A
Application number: CN2009801628373A
Authority: CN
Inventors: 杜瑛卓; 刘军华
Original assignee: Suzhou Khan Jimi Technology Co ltd
Current assignee: Suzhou Khan Jimi Technology Co., Ltd
Priority date: 2009-12-25
Filing date: 2009-12-25
Publication date: 2012-12-19
Anticipated expiration: 2029-12-25
Also published as: CN102834607B; WO2011075917A1

Abstract

A composite material wind generator tower (11) is provided. The tower (11) partly utilizes natural fiber strip/panel material. The material has excellent properties of extension/compression elastic modulus, intensity and the like, so that the tower has advantages of light weight convenient for transport, good anticorrosion performance and recovery easiness relative to the conventional ones.

Description

Wind generator tower

Pylon for wind-driven generator

Technical field：

The present invention relates to wind-driven generator tower frame and its manufacture method, more particularly to a kind of new composite material wind generator tower and its manufacture method based on bar/board-like material.

Background technology：

Wind power generating set is mainly robbed by wind wheel, gearing, generator, controller, machine, tower

Base diameter is slightly larger than top diameter；Shell is made up of that there is provided enough strength and stiffness steel plate or armored concrete；Pylon outer wall scribbles corrosion resistant coating；There are cat ladder or elevator to lead to tower top cabin inside pylon, be easy to detect and repair.The pylon of MW class wind turbine group is generally more than 60 meters, the up to rice up to a hundred having.For ease of transport, pylon sectional manufacture, in wind, farm site assembling.

With the raising and the raising to clean energy resource demand of wind technology, wind power generating set single-machine capacity is continued to increase, and tower height rise, the density of load is increased, tower weight increase.Meanwhile, wind power generating set can not only install by land, and increasing wind power plant gradually expands to sea.The requirement of the increasing of the power of the assembling unit and marine installation makes existing pylon product occur in that the problems such as weight is big, transport is difficult, lifting is difficult, requirement for anticorrosion is high, price is high.

Modern Composite Materials product, such as high strength glass fiber reinforced plastic, possess on single vector direction on specific strength more more preferable than steel and specific modulus, the product that thus be accordingly used in Impact direction Relatively centralized, product weight can be reduced in the case of same load, then reduction transport and hoisting difficulty.Meanwhile, composite generally has more preferable antiseptic property, will not be as metal because the salt content in seawater is high and corrodes.But due to having used chemical products as raw material, the pylon of composite manufacture has the disadvantage that price is higher, is difficult to reclaim after the completion of service life.

The content of the invention：

It is an object of the invention to provide a kind of new tower design, pass through the change on structure and material Leather so that the pylon of wind-driven generator is provided simultaneously with the high intensity of composite, high-modulus, low weight, is easy to transport and installs, the features such as antiseptic property is good, and conventional tower it is inexpensive, the features such as easily reclaim.

To achieve these goals, the present invention relates to a kind of pylon for wind-driven generator, it is characterized in that, the pylon is in its total length at least 1/3 length range, in the housing of its cross section, at least layer of material is arranged constituted in the housing in certain sequence by the pre-processed bar of many natural fiber materials/tabular fibrous composite.

In addition, to achieve these goals, the present invention relates to a kind of pylon for wind-driven generator, it is characterized in that, the pylon is in its total length at least 1/3 length range, in the housing of its cross section, at least layer of material is arranged in housing is constituted in certain sequence by many pre-processed natural fiber bar/board-like materials.

Primary structural material, while in the structure design and material of its main force part application innovation, to reduce cost and improve recuperability.

Epimere signified " main force part " refers to the part no less than pylon total height 1/3 of pylon, it will usually more than half, about can use the structure and material in the range of 60-90% tower height.

Brief description of the drawings：

By the description section carried out referring to the drawings hereinafter, all features described above can be best understood from, wherein the accompanying drawing shows the non-limiting example of the present invention, the accompanying drawing is：Fig. 1 is the overview of wind-driven generator；

Fig. 2 is a Fig. 1 cross section A sectional view；

Fig. 3 is pylon manufacture craft inner tube of a tyre schematic diagram；

Fig. 4 is that pylon makes winding process schematic diagram；

Fig. 5 is that pylon makes vacuum perfusion process schematic diagram； Fig. 6 is that pylon makes winding process flow chart；

Fig. 7 is that pylon makes vacuum perfusion process flow chart

Embodiment：

The present invention relates to a kind of pylon for wind-driven generator, such a wind-driven generator is as shown in Figure 1.The pylon 12 of blade of wind-driven generator 11 and wind-driven generator is shown in Fig. 1.The pylon 12 is characterised by, in the total length of pylon 12 at least 1/3 length range, as shown in Figure 2 in the housing of its cross section, at least layer of material is arranged constituted in the housing in certain sequence by many pre-processed bar/board-like materials.

Length of load bearing material is fibrous material, such as glass fibre, carbon fiber, wood-fibred, flax fiber etc. in conventional composite materials product.By the way that fibrous material is compiled into cloth, and then using hand paste or vacuum resin leading-in technique stable fibers intensity and make formed product.Another conventional method is directly to make the regular arrangement shaping of fiber using winding process.Present invention introduces bar/sheet composition, generally elongated type, the approximate rectangle in cross section is easy to processing, to strengthen the intensity of same direction vector to bear the Main Load suffered by pylon.

As shown in Fig. 2 above-mentioned bar/board-like material can be arranged side by side, its contact surface is approximately perpendicular to pylon periphery tangent plane, thus bar/board-like material can the unidirectional load of shared, as bar/sheet metal layer 22 in figure.Other two layers of pylon structure is frp layer 21 and 23 in Fig. 2.

Bar/board-like material cross section can be rectangle or trapezoidal, and its short side prolongs pylon peripheral direction, and long side is perpendicular to pylon periphery tangent plane.This structure provides certain wall thickness to pylon, to improve strength and stiffness；Ensure periphery still Jie Jin Round shapes after bar/board-like material close-packed arrays simultaneously, be easy to processing.

One advantage of the invention is that the composite that at least part bar/board-like material is constituted using hollow tubular fiber is made or is made up of natural fiber material, therefore it is able to use less material on the premise of same structural strength is ensured, obtains lower product weight.

Bar/board-like material is used as primary structural material in the main force part of pylon.Bar/board-like material in itself still be composite, can pay the utmost attention to environmental protection bamboo and wood materials, by selection, drying, Glued board, laminated timber or recombinant material is made in the techniques such as hot pressing, polishing.These bamboo and wood processing technologys have been widely used for each civil use industry and industrial sector.The bamboo composite wood or wood composite or bamboo and wood composite wood of high intensity possess the specific strength higher than fiberglass and specific modulus, while processing technology is simple, more possess good recuperability and recyclability, therefore be the preferred material of composite pylon.

One big feature of composite is that the load bearing capacity of all directions is different, and this, which is particluarly suitable for a certain direction vector, the product of concentrfated load, such as pylon.The machine direction that can be born in the load that wind power generating set is acted on pylon, at least part bar/board-like material to ensure tower wall should be grouped as same direction or approximate same direction, and the direction is tower length direction.When wind power generating set is caused pylon to be tilted to leeward direction by wind-force, pylon windward side housing is by pulling force, lee face housing is stressed, and fibrous material is exactly mainly the tensile load and compressive load for being used to undertake tower shell in bar/board-like material in the present invention.Obtained through Structure Calculation and engineer testing, the content of bamboo and woods fiber composite is rational in the range of 40%-90%, the pylon product of relatively optimization can be obtained especially in the range of 50%-80%.

Bamboo and wood materials generally have good adhesive property with common adhesive, therefore are easy to compound with other composites.The technique or winding process that resin can be imported using vacuum carry out the processing of tower shell.

The performance of bamboo and wood materials has unstability, but can then possess stable mechanical property by selection and the bamboo and wood materials dried.The change of moisture content is the main cause for causing bamboo and wood materials to be difficult to use in open-air industrial structural wood; by using the strong resin material of water insulating properties; such as epoxy resin, bamboo and wood materials are protected, it is ensured that pylon possesses stable mechanical property in its more than 20 years service life.This has fully been confirmed in blade of wind-driven generator industry.

For the purpose of protection bamboo and wood materials moisture content, using one layer of composite as protective layer, resin process is poured into by vacuum or winding process is wrapped in the bar being made up of bamboo-wood composite material/board-like material internal layer and outer layer.Ectonexine composite is once used to undertake shearing load and moisture content protection, and bar/board-like material that middle bamboo-wood composite material is constituted undertakes tensile and compressive strength, forms complementary composite structure tower shell. The design of pylon including its internal cat ladder or elevator, is detected and repaired to facilitate technical staff to rob inside towards tower top machine simultaneously.Tower bottom is provided with wicket, is passed in and out for personnel.Pylon outer surface scribbles paint, is generally robbed with machine and remains same color with blade.

Its manufacturing process is as follows：

1. winding method, technological process is as shown in Figure 6：

1. in S11, the inner tube of a tyre shown in Fig. 3 is manufactured according to the internal diameter size of pylon（In Fig. 4, the inner tube of a tyre is represented with reference 41）, material uses steel material, also can be using other surfaces rigid material in good condition；

I I. are in S12, according to the common winding process of fiberglass, and one layer of glass-reinforced plastic material is wound by correct machine direction outside the inner tube of a tyre, form frp layer 42 as shown in Figure 4；

I I I. lay plate/web and the metal connecting piece of internode connection in S13 in the fiberglass periphery wound, and using resin that its is bonding, form plate as shown in Figure 4/web layer 43;

IV. in S14, winding process is reused, one layer of glass-reinforced plastic material is wound outside plate/web, frp layer 44 as shown in Figure 4 is formed;

V. the step of product being fully cured by S15 being implemented into S16 deviates from inner tube of a tyre mold, and repairs as the product shown in Fig. 2.

2. priming by vacuum method, technological process is as shown in Figure 7：

I. in S21, the inner tube of a tyre shown in Fig. 3 is manufactured according to the internal diameter size of pylon, material uses steel material, also can be using other surfaces rigid material in good condition；

I I. are in S22, as shown in figure 5, by glass fabric 53, plate/web 54 and other layer of glass cloth 55 are tightened on the inner tube of a tyre 52 successively；

I I I. are in S23, as shown in figure 5, connecting into and out of sebific duct 51 and 56;

IV. in S24, vacuum infusion molding is carried out to these materials using fiberglass vacuum infusion molding method；

V. the step of product being fully cured by S25 being implemented into S26 deviates from inner tube of a tyre mold, and repaiies It is made into as the product shown in Fig. 2.

A kind of new composite material wind generator tower and its manufacture method involved in the present invention, contains the unique tower shell structure therefore designed and its special material used.Tower portion involved in the present invention employs natural fiber bar/board-like material, such a material tests prove that the function admirable such as tensile/compressive spring modulus, intensity so that its have for conventional tower it is lightweight be readily transported, antiseptic property is good, the features such as be easily recycled.

While the present invention has been described with reference to the exemplary embodiments, it should be appreciated that, the invention is not restricted to disclosed exemplary embodiments.The scope of the appended claims meets most wide explanation, to include all such modifications and equivalent structure and function.

Claims

Claim

1. a kind of pylon for wind-driven generator, it is characterized in that, the pylon is in its total length at least 1/3 length range, in the housing of its cross section, and at least layer of material is arranged constituted in the housing in certain sequence by many pre-processed bar/board-like materials.

2. the pylon for wind-driven generator as described in claim 1, it is characterised in that the pre-processed bar/board-like material is arranged side by side, the contact surface between adjacent strip/board-like material and the layer material outer surface tangent plane near vertical.

3. the pylon for wind-driven generator as described in claim 1, it is characterized in that, at least part bar/plate object cross section vertical with tower length direction is rectangle or trapezoidal, and the cross section short side of at least part bar/board-like material is along pylon cross-sectional circumference direction, and/or at least part bar/long side of its rectangular cross section of board-like material or trapezoidal cross-section hypotenuse are perpendicular to pylon peripheral direction.

4. the pylon for wind-driven generator as described in claim 1-3, it is characterised in that at least partly pre-processed bar/board-like material is made up of composite.

5. it is used for the pylon of wind-driven generator as claimed in claim 4, it is characterised in that the composite that at least partly pre-processed bar/board-like material is made up of hollow tubular fiber is constituted.

6. the pylon for wind-driven generator as described in claim 1-3, it is characterised in that at least partly pre-processed bar/board-like material is made up of natural fiber material.

7.-kind be used for wind-driven generator pylon, it is characterized in that, the pylon is in its total length at least 1/3 length range, in the housing of its cross section, at least layer of material is arranged in housing is constituted in certain sequence by the pre-processed bar of many natural fiber materials/tabular fibrous composite.

8. the pylon for wind-driven generator as claimed in claims 6 or 7, it is characterised in that the majority fibers direction of fibrous composite is substantially parallel with tower length direction.

9. the pylon for wind-driven generator as described in claim 7-8, it is characterised in that fine The fiber content ratio of composite is tieed up in 50%-90%.

10. it is used for the pylon of wind-driven generator as claimed in claim 9, it is characterised in that the fiber content ratio of fibrous composite is in 60%-80%.

11. the pylon for wind-driven generator as described in claim 7-8, it is characterised in that the bamboo and woods fiber content ratio of fibrous composite is in 40%-90%.

12. the pylon for wind-driven generator as described in claim 11, it is characterised in that the bamboo and woods fiber content ratio of fibrous composite is in 50%-80%.

1 3. pylon for wind-driven generator as claimed in claims 6 or 7, it is characterised in that natural fiber material is laminated timber or recombinant material.

14. the pylon for wind-driven generator as described in claim 13, it is characterised in that its natural fiber material is to strengthen constituting by the cured resin of natural fiber.

15. the pylon for wind-driven generator as described in claim 13 or 14, it is characterised in that at least part composite layer is prolonged periphery housing and constituted in certain sequence by natural fiber bar/board-like material and fiber composite bar/board-like material.

16. the pylon for wind-driven generator as any one of claim 7-15, it is characterised in that the fiber composite layer is surrounded by least one layer of outer layer fiber composite material casing layer and at least one layer of inner fiber composite material casing layer.

17. the pylon as described in any of claims 16 for wind-driven generator, it is characterised in that the fibrous material for undertaking load is present in internal layer and among any in outer casing layer or while is present among inner and outer shell layer.

18. any one of the as described above pylon for wind-driven generator described in claim, it is characterised in that its inner space is equipped with stair or elevator.

19. the pylon for wind-driven generator as described in claim 18, it is characterised in that opened a door in the bottom of the pylon.

20. the pylon for wind-driven generator as described in above-mentioned claim 1-19 any one claim, it is characterised in that the surface of above-mentioned at least 1/3 part of the pylon is covered by paint.