阅读说明：本技术 海上90m风力发电机叶片及包含其的风力发电机组 (Offshore 90m wind driven generator blade and wind generating set comprising same ) 是由 孙元荣 崔锋锋 叶志昊 肖峰 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种海上90m风力发电机叶片及包含其的风力发电机组,所述海上90m风力发电机叶片包括叶片本体,所述叶片本体包括压力面壳体、吸力面壳体和腹板,所述压力面壳体包括第一壳本体和碳纤维主梁,所述碳纤维主梁设置于所述第一壳本体内,所述吸力面壳体包括第二壳本体和玻璃纤维主梁,所述玻璃纤维主梁设置于所述第二壳本体内,所述腹板的上下两端分别连接于所述碳纤维主梁和所述玻璃纤维主梁,且所述压力面壳体与所述吸力面壳体相连接。有效提高了海上90m风力发电机叶片的强度,降低了海上90m风力发电机叶片的重量。同时,使得扫风面积增大,获取的风能就增大,扩大了适用范围,增加了海上90m风力发电机叶片的功率。(The invention discloses an offshore 90m wind driven generator blade and a wind driven generator set comprising the same, wherein the offshore 90m wind driven generator blade comprises a blade body, the blade body comprises a pressure surface shell, a suction surface shell and a web plate, the pressure surface shell comprises a first shell body and a carbon fiber main beam, the carbon fiber main beam is arranged in the first shell body, the suction surface shell comprises a second shell body and a glass fiber main beam, the glass fiber main beam is arranged in the second shell body, the upper end and the lower end of the web plate are respectively connected with the carbon fiber main beam and the glass fiber main beam, and the pressure surface shell is connected with the suction surface shell. The strength of the blades of the offshore 90m wind driven generator is effectively improved, and the weight of the blades of the offshore 90m wind driven generator is reduced. Meanwhile, the wind sweeping area is increased, the obtained wind energy is increased, the application range is expanded, and the power of blades of the offshore 90m wind driven generator is increased.)

1. The utility model provides a 90m aerogenerator blades on sea, its characterized in that, it includes the blade body, the blade body includes pressure surface casing, suction surface casing and web, the pressure surface casing includes first shell body and carbon fiber girder, the carbon fiber girder set up in the first shell body, the suction surface casing includes second shell body and glass fiber girder, the glass fiber girder set up in the second shell body, the upper and lower both ends of web connect respectively in the carbon fiber girder with the glass fiber girder, just the pressure surface casing with the suction surface casing is connected.

2. The offshore 90m wind turbine blade of claim 1, wherein an end of the web is fixedly attached to the fiberglass spar by an adhesive.

3. An offshore 90m aerogenerator blade as defined in claim 1 wherein the pressure side shell and the suction side shell are each 90m in length.

4. An offshore 90m aerogenerator blade as defined in claim 1 wherein the number of said webs is plural.

5. An offshore 90m aerogenerator blade as claimed in claim 1 wherein the maximum chord length of the blade body is 4800 mm.

6. An offshore 90m aerogenerator blade as claimed in claim 1, characterized in that the maximum prebend of the blade body is 2500 mm.

7. An offshore 90m aerogenerator blade as claimed in claim 1, characterized in that the blade body has a root outer circle diameter of 3700 mm.

8. Wind park according to any of claims 1-7, characterized in that it comprises an offshore 90m wind turbine blade.

Technical Field

The invention relates to an offshore 90m wind driven generator blade and a wind driven generator set comprising the same.

Background

The wind generating set comprises a wind wheel, a generator, a transmission system, a tower frame, electrical control equipment and the like, wherein the cost of a wind generating blade accounts for about 20% of the cost of the whole wind generating device, and the wing section, the structural form, the material performance and the like of the blade directly influence the performance of the wind generating set.

At present, wind power blades are developed towards the direction of large-scale development, wherein offshore wind energy resources are superior, the expected bid amount of a national offshore wind power project in 2017-2019 is 1019.6 ten thousand kilowatts, the offshore wind power development potential is huge, and the offshore wind power is rapidly increased by 10.7% of annual composite growth rate. Meanwhile, the rapid development of the sea causes the large-scale of the offshore blade.

However, as blade length increases, new problems such as heaviness and fatigue, as blade length increases, its load conditions increase with increasing length. Therefore, the development of the offshore large-blade can further improve the light weight and the high strength of the blade, the service life of the blade is prolonged, and the load of the whole machine is reduced, so that the offshore large-blade has great significance for the industrialization of offshore wind power blades.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an offshore 90m wind driven generator blade and a wind driven generator set comprising the same.

The invention is realized by the following technical scheme:

the utility model provides a 90m aerogenerator blades on sea, its includes the blade body, the blade body includes pressure surface casing, suction surface casing and web, the pressure surface casing includes first shell body and carbon fiber girder, the carbon fiber girder set up in the first shell body, the suction surface casing includes second shell body and glass fiber girder, the glass fiber girder set up in the second shell body, the upper and lower both ends of web connect respectively in the carbon fiber girder with the glass fiber girder, just the pressure surface casing with the suction surface casing is connected.

Further, the end of the web is fixedly connected to the glass fiber main beam through adhesive.

Further, the length of the pressure surface shell and the length of the suction surface shell are both 90 m.

Further, the number of the webs is plural.

Further, the maximum chord length of the blade body is 4800 mm.

Further, the maximum pre-bending of the blade body is 2500 mm.

Further, the diameter of the outer circle of the root part of the blade body is 3700 mm.

A wind park comprising an offshore 90m wind turbine blade as described above.

The invention has the beneficial effects that: the glass fiber main beam and the carbon fiber main beam are connected with the glass fiber main beam and the carbon fiber main beam through the webs, so that the strength of the blades of the offshore 90m wind driven generator is effectively improved, and the weight of the blades of the offshore 90m wind driven generator is reduced. Meanwhile, the length of the blade body is increased, so that the wind sweeping area is increased, the obtained wind energy is increased, the application range is expanded, and the power of the blades of the offshore 90m wind driven generator is increased.

Drawings

FIG. 1 is an internal schematic view of an offshore 90m wind turbine blade according to an embodiment of the present invention.

FIG. 2 is a schematic view of the interior of a pressure side housing according to an embodiment of the invention.

FIG. 3 is a schematic view of the interior of a suction side housing according to an embodiment of the present invention.

FIG. 4 is a schematic view of an offshore 90m wind turbine blade according to an embodiment of the invention.

FIG. 5 is a schematic view of another perspective of an offshore 90m wind turbine blade according to an embodiment of the present invention.

Description of reference numerals:

blade body 1

Pressure surface shell 11

Suction surface shell 12

Web 13

First case body 111

Carbon fiber main beam 112

Second case body 121

Fiberglass main beam 122

Chord length L1

Prebending L2

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the present embodiment discloses an offshore 90m wind turbine blade, where the offshore 90m wind turbine blade includes a blade body 1, the blade body 1 includes a pressure surface shell 11, a suction surface shell 12, and a web 13, the pressure surface shell 11 includes a first shell body 111 and a carbon fiber girder 112, the carbon fiber girder 112 is disposed in the first shell body 111, the suction surface shell 12 includes a second shell body 121 and a glass fiber girder 122, the glass fiber girder 122 is disposed in the second shell body 121, upper and lower ends of the web 13 are respectively connected to the carbon fiber girder 112 and the glass fiber girder 122, and the pressure surface shell 11 is connected to the suction surface shell 12.

In the offshore 90m wind turbine blade of the embodiment, the blade body 1 is formed by laying glass fiber cloth attached to a blade mold. The high-modulus glass fiber main beam 122 is laid in the middle of the suction surface shell 12, the high-modulus carbon fiber main beam 112 is laid in the middle of the pressure surface shell 11, the two sides of the carbon fiber main beam 112 and the glass fiber main beam 122 are laid flat by PVC foam and balsa wood, then the whole shell is covered by glass fiber cloth, and then the pressure surface shell 11 and the suction surface shell 12 are made by vacuum resin infusion. After the pressure surface shell 11 and the suction surface shell 12 are precured in the mold, the prefabricated web 13 is respectively connected to the carbon fiber main beam 112 of the pressure surface shell 11 and the glass fiber main beam 122 of the suction surface shell 12.

The suction surface shell 12 and the pressure surface shell 11 are respectively made of glass fiber girders 122 and carbon fiber girders 112, and are connected with the glass fiber girders 122 and the carbon fiber girders 112 through webs 13, so that the strength of the blades of the offshore 90m wind driven generator is effectively improved, and the weight of the blades of the offshore 90m wind driven generator is reduced. Meanwhile, the length of the blade body 1 is increased, so that the wind sweeping area is increased, the obtained wind energy is increased, the application range is expanded, and the power of the blades of the offshore 90m wind driven generator is increased. According to the offshore 90m wind driven generator blade, through the improvement of the wing profile, the rotating speed of the offshore 90m wind driven generator blade is improved, the size and the weight of a direct-drive generator are reduced, and the production cost is reduced; meanwhile, the blade tip of the blade body 1 is designed flexibly, so that the aim of further reducing the blade load of the offshore 90m wind driven generator is fulfilled.

In this embodiment, the ends of the web 13 are fixedly attached to the fiberglass main beams 122 by adhesive. After the pressure surface shell 11 and the suction surface shell 12 are pre-cured in the mold, the lower end of the prefabricated web 13 is fixedly connected to the glass fiber main beam 122 of the suction surface shell 12 by using an adhesive, and the pressure surface shell 11 is turned over and closed on the suction surface shell 12, so that the upper end of the web 13 is fixedly connected to the carbon fiber main beam 112 of the pressure surface shell 11. The installation is very convenient.

In the present embodiment, the length of the blade body 1 is 90m, i.e. the length of the pressure side shell 11 and the suction side shell 12 are both 90 m. The quantity of web 13 is a plurality of, has effectively strengthened the overall structure intensity of blade body 1, and stability is higher.

The maximum chord length L1 of the blade body 1 is 4800 mm. The maximum pre-bend L2 of the blade body 1 is 2500 mm. The weight of the blade body 1 is 36550Kg, wherein the weight comprises a bolt and an accessory; the weight of the blades of the 90m wind driven generator at sea is reduced by about 4000 Kg. The number of bolts is 144. The life of an offshore 90m wind turbine blade is 25 years. The diameter of the wind wheel is 183.8m, and the lowest rotating speed of the wind wheel is as follows: 4 rpm; rated rotation speed: 10 rpm. The diameter of the outer circle of the root part of the blade body 1 is 3700 mm.

The embodiment also discloses a wind generating set which comprises the offshore 90m wind generator blade. The length of the blade body 1 is increased, the wind sweeping area is increased, the obtained wind energy is increased, the application range of the wind generating set is expanded, and the power of the wind generating set is increased. The adoption of the glass fiber main beams 122 and the carbon fiber main beams 112 effectively improves the strength of the wind generating set and reduces the weight of the wind generating set by about 4000 Kg. Through the improvement of the wing profile, the rotating speed is improved, the volume and the weight of the direct-drive generator are reduced, and the production cost is reduced; meanwhile, the blade tip of the blade body 1 is designed flexibly, so that the purpose of further reducing the load is achieved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.