CN116696654A

CN116696654A - Sectional type wind power generation blade and transportation method thereof

Info

Publication number: CN116696654A
Application number: CN202310731201.8A
Authority: CN
Inventors: 张跃
Original assignee: Broad Sustainable Building Co
Current assignee: Broad Sustainable Building Co
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-09-05

Abstract

A sectional wind power generation blade and a transportation method thereof, wherein the sectional wind power generation blade comprises a blade body which is divided into at least two blade segments along the length direction; each blade section comprises a She Tou, a blade body and a blade tip which are detachably connected; the split transportation can be carried out by disassembly; the pneumatic profile of the blade section is formed by being assembled into a whole. The application also comprises a transportation method of the sectional type wind power generation blade. According to the application, she Tou of all blade segments of the whole blade body can be stacked to form a blade head transport group, and similarly, blade bodies and blade tip parts are distributed to form the blade body transport group and the blade tip transport group, so that sea and land transport of the whole blade body can be completed by only three containers, the transport cost is greatly reduced, and the transport efficiency is improved.

Description

Sectional type wind power generation blade and transportation method thereof

Technical Field

The application relates to the technical field of wind power generation, in particular to a sectional type wind power generation blade and a transportation method thereof.

Background

The wind wheel of the existing wind driven generator generally comprises at least two blade bodies, three or four blades are common, the length of each existing blade is usually within 130 meters at maximum, and because the blades are too long to transport the existing wind driven generator integrally, the existing wind driven generator mainly comprises a plurality of sections along the length of each blade so as to transport the blades in sections, if one blade with the length of 120 meters is usually required to be divided into about 10 sections, each section is about 12 meters, and if a container is adopted for transportation, the length of the container with the length of 40 meters at maximum at present is about 12 meters, then one transport vehicle can only transport one section of blade, and thus 10 transport vehicles are required to transport the blades, and the transportation cost is greatly increased.

Therefore, there is a need to design a wind turbine blade structure that meets the requirements of low transportation cost and high transportation efficiency, so as to solve the above problems.

Disclosure of Invention

The application aims to overcome the defects in the prior art and provide the sectional type wind power generation blade and the transportation method thereof, which have the advantages of low transportation cost, high transportation efficiency and convenience in installation.

The technical scheme of the application is as follows:

the application relates to a sectional type wind power generation blade, which comprises a blade body, wherein the blade body is divided into at least two sections of blade segments along the length direction; each blade section comprises a She Tou, a blade body and a blade tip which are detachably connected; the split transportation can be carried out by disassembly; the pneumatic profile of the blade section is formed by being assembled into a whole.

In one embodiment of the application, the She Tou, the body and the tip are each made from a core plate.

In one embodiment of the application, a reinforcing structure is arranged between the She Tou and the blade body and between the blade body and the blade tip; the reinforcing structure is arranged in the cavity of the blade segment.

In one embodiment of the application, the blade body comprises two core plates, the splicing ends of the blade body, she Tou and the blade tip are connected with reinforcing structures, and a structure with a trapezoid cross section is formed between the reinforcing structures and the core plates.

In one embodiment of the application, the core of She Tou is a curved panel; or the blade head comprises a plurality of plane core plates, and the plane core plates are mutually spliced to form a curved surface structure; the blade tip comprises two core plates connected in an included angle, and a tip is formed at one end far away from the blade body.

In one embodiment of the application, the blade body is a gradual change structure with gradually decreasing cross-sectional dimensions, and the dimensions of the blade segments are different.

In one embodiment of the application, the blade heads of each blade section are sleeved with each other to form a blade head conveying group for conveying; the blade bodies of the blade segments are sleeved to form a blade body transporting group, and the core plates of the blade bodies are connected with the reinforcing structure into a whole for transportation; selecting two blade tips with the largest size from the blade tips of each blade segment, placing the blade tips in a positive and negative contact mode to form an N-shaped mode, and stacking small-size blade tips in the two blade tips respectively to form a blade tip transport group.

In one embodiment of the application, after each section of blade section is spliced to form the blade body, the reinforcing structure is arranged along the length direction, the reinforcing structure is She Hangjia, and the blade truss comprises an upper beam, a lower beam and a plurality of supporting tubes arranged between the upper beam and the lower beam; the upper beam and the lower beam are respectively provided with a clamping part connected with the core plate; the end parts of the upper beam and the lower beam are provided with flanges, and adjacent blade segments are connected through the flanges to form the blade body.

In one embodiment of the application, the core plate is a stainless steel or aluminum core plate, and comprises a panel, a sandwich layer and a panel; the sandwich layer is of a honeycomb structure, a core tube array or a corrugated structure.

The application relates to a transportation method of a sectional type wind power generation blade, which comprises the following steps:

dividing the blade body into a plurality of sections of blade segments along the length direction, wherein each section of blade segment comprises She Tou, a blade body and a blade tip which are arranged in a split mode;

combining She Tou of the blade segments together to form a blade carrying set; combining the blade bodies of the blade segments together to form a blade body transportation group; combining the blade tips of all the blade segments together to form a blade tip transport group; or the blade body and the blade tip of the other blade body are combined together at the same time to form a blade tip transport group;

and (5) transporting the She Tou transporting group, the blade body transporting group and the blade tip transporting group separately, and assembling after reaching the target position to form the blade body with gradually changed cross-sectional shape.

In one embodiment of the application, the two ends of the She Tou shipping group, the blade body shipping group and the blade tip shipping group are connected with end frames, and corner fittings are arranged on the end frames to meet the container transportation standard.

The application has the beneficial effects that:

the blade body is divided into a plurality of sections along the length direction, each section of blade section is further segmented into She Tou, a blade body and a blade tip, she Tou of all blade sections of the whole blade body can be stacked to form a blade head transport group, and similarly, the blade body and the blade tip part are distributed to form the blade body transport group and the blade tip transport group, so that sea and land transport of the whole blade body can be completed only by three containers, the transport cost is greatly reduced, and the transport efficiency is improved;

by arranging the two reinforcing structures, the connection between the blade body and She Tou and the blade tip and the splicing between adjacent blade segments are facilitated, and on the other hand, the strength of the splicing part and the strength of the whole cavity of the blade body are improved, so that the supporting and reinforcing effects are realized; and the assembling speed is greatly improved in a clamping manner.

Drawings

FIG. 1 is a schematic view of a wind wheel according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a blade segment according to an embodiment of the application (She Tou using a planar core);

FIG. 3 is a schematic cross-sectional view of a blade segment according to an embodiment of the application (She Tou employing a curved core);

FIG. 4 is a schematic view of the interior She Hangjia of the blade segment of the embodiment of FIG. 3;

FIG. 5 is a schematic view of a first and second clamping member for a blade body and a blade tip according to an embodiment of the present application;

FIG. 6 is a schematic view of a fastening structure between the blade body and the blade tip of the embodiment shown in FIG. 5;

FIG. 7 is a schematic diagram of a group according to an embodiment She Tou of the present application;

FIG. 8 is a schematic view of a blade carrying set according to an embodiment of the present application;

FIG. 9 is a schematic view of the tip handling assembly (tip portion of a blade body) according to an embodiment of the present application;

FIG. 10 is a schematic view of the tip handling assembly (tip section assembly of two blade bodies) according to an embodiment of the present application.

The attached drawings are used for identifying and describing:

1. a blade body; 2. leaf segments; 3. a core plate; 4. she Tou group transportation; 5 (5'). Tip handling group; 6. carrying out leaf body group transportation; 7. she Hangjia; 8. a flange;

21. she Tou; 22. a leaf body; 23. a blade tip; 31. a frame; 71. a girder is arranged; 72. a lower beam; 73. a support tube; 74. a second clamping piece;

231. a first blade tip; 232. a second blade tip; 311. the first clamping piece.

Detailed Description

The application will be described in further detail with reference to the drawings and the specific examples.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

As shown in fig. 1 to 3: a segmented wind power generation blade, comprising a blade body 1, wherein the blade body 1 is divided into at least two blade segments 2 along the length direction; each blade segment 2 comprises a She Tou, a blade body 22 and a blade tip 23 which are detachably connected; the split transportation can be carried out by disassembly; the blade segment 2 is formed into a pneumatic shape by being assembled into a whole.

The scheme has the following advantages:

through dividing into the multistage with the blade body along length direction, and every section blade section further designs into the sectional structure, can carry out the components of a whole that can function independently transportation like this. Because a wind wheel generally comprises at least two blade bodies, a large blade body cannot be transported integrally, and if the large blade body is only divided into a plurality of sections along the length, the large blade body can be transported by only one section of container, so that more than five containers are needed for transportation, and the transportation cost is greatly increased.

The application can stack She Tou of all blade segments of the whole blade body by segmenting the blade body and the blade tip into She Tou, so that a blade head transport group is formed, and similarly, the blade body and the blade tip part are distributed to form the blade body transport group and the blade tip transport group, so that sea and land transport of the whole blade body can be completed by only three containers, the transport cost is greatly reduced, the transport efficiency is improved, and the whole blade body can be assembled on site.

In this embodiment, the She Tou, the blade body 22 and the blade tip 23 are all made of the core plate 3. The core plate 3 comprises two panels and a sandwich layer arranged between the panels, the sandwich layer is a core tube array and comprises a plurality of hollow tubes which are arranged at intervals, the upper ends and the lower ends of the hollow tubes are turned over, and the hollow tubes are connected with the upper panel and the lower panel in a brazing way. The structure has the advantages of good strength and rigidity, light weight, simplified process and no need of additionally arranging a skin.

The material of the core plate is preferably aviation aluminum alloy, the strength and the service life of the core plate are equivalent to those of a fan, and the core plate can be durable for 60 years and is convenient to recycle.

In this embodiment, the blade body 1 is generally divided into 6 to 13 sections along the length direction, and the following is exemplified by being divided into 8 sections:

the blade body 1 is divided into eight sections of blade segments 2 along the length direction, and for the stacking arrangement of She Tou, blade bodies 22 and blade tips 23 of different blade segments, the blade body 1 is preferably designed into a gradual change structure with gradually reduced cross-sectional dimensions, namely the dimensions of the blade body from the blade root to the blade tail are sequentially reduced, so that the dimensions of the blade segments at the blade root are maximum, the dimensions of the blade segments at the blade tail are minimum, and the dimensions of the blade segments from the blade root to the blade tail are sequentially reduced, so that the dimensions of each blade segment are different, the sleeving connection can be realized, and the small dimensions are sleeved into the large dimensions for stacking transportation.

As shown in fig. 2: the She Tou of each blade section 2 has a polygonal structure, for example, the core plates 3 with four planar structures are spliced with each other to form a shape with a near-curved surface structure, compared with an arc-shaped core plate, the planar core plates are easy to process, the near-curved surface structure can be formed by splicing a plurality of pieces, and the cross-sectional shape can be similar to a bullet head or a water drop shape. The adjacent core plates 3 can be screwed, riveted or connected by other connection modes, and specific connection is not in the protection scope of the application, so that detailed description is omitted. Since the size of each blade segment is different, the size of the blade head 21 is different, and since the blade head of the blade segment near the blade root is the largest in size during transportation, the blade heads of the other blade segments are stacked like Luo Sitao baby from large to small to form the blade head transport group 4, as shown in fig. 7.

It will be appreciated that as shown in fig. 3 and 4: the blade head of each blade segment of the blade body can also adopt a curved core plate to replace a plane core plate, for example, two arc-shaped core plates are arranged, and the two arc-shaped core plates are welded into a whole to form a bullet-like structure. This structure is less numerous than the planar core plates described above, but is more complex to manufacture.

The tip 23 of each blade segment 2 comprises two core plates 3 connected at an angle, forming a tip at the end remote from the blade body 22. When in transportation, two blade tips with the largest size are selected from the blade tips 23 of each blade segment 2, are placed in a positive and negative way and are contacted with an inclined plane to form an N shape, and other blade tips with small sizes are respectively stacked in the two blade tips to form a blade tip transportation group 5, as shown in fig. 9.

Because the two core plates 3 of the blade tips form a V shape in an included angle, the blade tips with the largest size are named as a first blade tip 231 and a second blade tip 232, one core plate of the first blade tip 231 is vertically placed, and then the other core plate is in an inclined state; and then vertically placing one core plate of the second blade tip 232, enabling the other core plate to be in parallel face-to-face contact with the inclined core plate of the first blade tip after being inclined, enabling the opening of the first blade tip 231 to be downward, enabling the opening of the second blade tip 232 to be upward, and combining to form an N-shaped blade tip, and enabling other small-size blade tips to be respectively placed in the openings of the first blade tip and the second blade tip for transportation.

Because the container transportation in the N shape wastes space, the container transportation can be placed side by side with the blade tips of other blade bodies to form a new blade tip transportation group 5', as shown in fig. 10, the blade tip parts of two blade bodies can be transported at one time, the transportation efficiency is further improved, and the transportation cost is reduced.

The blade body 22 of each blade segment 2 comprises two core plates 3 with planar structures, the splicing ends of the blade body 22, she Tou and the blade tip 23 are connected with reinforcing structures, and a structure with a trapezoid cross section is formed between the reinforcing structures and the core plates 3. The reinforcing structure of this embodiment is She Hangjia, she Hangjia, and includes an upper beam 71, a lower beam 72, and a plurality of support tubes 73 disposed therebetween, wherein the support tubes 73 are vertically or obliquely connected to the upper and lower beams.

Through setting up She Hangjia, the concatenation between the blade body 22 and She Tou, the apex 23 of being convenient for on the one hand and between the adjacent blade segment 2 on the other hand is convenient for improve the intensity of concatenation department and the intensity of whole blade body 1 cavity, plays support and enhancement effect. In the embodiment, during transportation, the blade bodies of all the blade segments 2 are stacked according to the size, the blade body with the largest size is arranged at the outermost part, and the blade bodies with other sizes are hidden in the blade body cavity with the largest size to form the blade body transportation group 6, as shown in fig. 8.

As shown in fig. 5 and 6: in this embodiment, the upper and lower panels of the core plate 3 are sealed by the frame 31, and the frame is -shaped and welded together with the upper and lower panels. When the blade body 22 is connected with the She Tou, the core frame 31 of the She Tou core plate 3 is provided with the first clamping pieces 311, she Hangjia at the connection position of the blade body 22 and the She Hangjia 7, and the upper beam 71 and the lower beam 72 of the blade body 22 are respectively provided with the second clamping pieces 74 connected with the core plate 3.

In the above structure, the second clamping member 74 is disposed along the length direction of the upper beam/lower beam, the first clamping member 311 is disposed along the length direction of the frame 31, and the first clamping member 311 and the second clamping member 74 are adapted to be in clamping connection, so that the blade 22 and the She Tou 21 are assembled in a combined manner, and the assembly is simple and rapid. In order to strengthen the connection stability of the two, the two can be further fixed by bolts.

The first clamping piece 311 of the embodiment is a part protruding outwards along the frame 31, and the cross section of the first clamping piece is T-shaped; the second engaging piece 74 is a grooved member provided on the upper beam/lower beam, and has a C-shaped cross section with corners at right angles. When the blade body 22 is connected with the She Tou, the horizontal part of the T-shaped part of the first clamping piece 311 extends into the opening of the C-shaped part of the second clamping piece from one side of the second clamping piece 74, so that the fixed connection can be realized, and the first clamping piece 311 cannot be pulled out from the opening of the C-shaped part.

In this embodiment, the manner of the above-mentioned fastening is also adopted when the She Hangjia of the blade body is connected to the blade tip 23, and the structure is the same, and detailed description thereof will not be repeated here. The splicing mode of the application is time-saving and labor-saving, can realize rapid assembly and greatly improves the working efficiency.

As shown in fig. 4: in this embodiment, when the adjacent blade segments 2 are spliced to form the blade body 1, the flanges 8 are disposed at the end portions of the upper beam 71 and the lower beam 72, so that the adjacent blade segments 2 are connected by the flanges 8 to form the blade body 1. The inner cavity of the blade body 1 is supported by two blade trusses 7, so that the strength is improved.

The transportation method of the blade body of the embodiment comprises the following steps:

(1) Dividing the blade body 1 into a plurality of sections of blade segments 2 along the length direction, wherein each section of blade segment 2 comprises a She Tou, a blade body 22 and a blade tip 23 which are arranged in a split manner;

(2) Combining She Tou of the leaf segments together to form a leaf shipment group 4; combining the blade bodies 22 of the blade segments together to form a blade body transportation group 6; the tips 23 of the blade segments are combined together to form the tip carrier group 5. She Tou, blade and blade tip transport groups are transported by three transport vehicles respectively. Wherein, both ends of every fortune group all are connected with and are equipped with the end frame, and the four corners of end frame is equipped with the corner fittings, and fortune group accords with container transportation standard when transporting. In addition, since there is a remaining space in the width direction of the container after the tips of all the blade sections of one blade body are stacked, the blade body and all the tips of the other blade body can be arranged side by side to form a new tip handling group 5'. For example, the embodiment can meet the 40-ruler container standard for transportation.

(3) And after being transported to the target position, the blade body 1 with the gradually-changed cross-sectional shape is formed by assembling. Namely: the She Tou blade body and the blade tip are assembled in a clamping way to form a complete blade section structure, and then adjacent blade sections are assembled through flanges to form a complete blade body.

In summary, according to the application, on the one hand, the blade body is divided into a plurality of sections along the length direction, and each section of blade section is further divided into She Tou, the blade body and the blade tip, so that She Tou of all the blade sections of the whole blade body can be stacked to form the blade head transport group, and similarly, the blade body and the blade tip are distributed to form the blade body transport group and the blade tip transport group, so that sea and land transport of the whole blade body can be completed only by three containers, the transport cost is greatly reduced, and the transport efficiency is improved; on the other hand, by arranging She Hangjia, the connection between the blade body and She Tou and the connection between the blade tips and the splicing between the adjacent blade segments are facilitated, and on the other hand, the strength of the splicing part and the strength of the whole cavity of the blade body are improved, so that the supporting and reinforcing effects are realized; and the assembling speed is greatly improved in a clamping manner.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A segmented wind power generation blade, comprising a blade body divided into at least two blade segments along a length direction; the blade is characterized in that each blade section comprises a She Tou blade body and a blade tip which are detachably connected; the split transportation can be carried out by disassembly; the pneumatic profile of the blade section is formed by being assembled into a whole.

2. The segmented wind power generation blade of claim 1, wherein the She Tou, the blade body and the blade tip are each fabricated from a core plate.

3. The segmented wind turbine blade of claim 2, wherein stiffening structures are provided between the She Tou and the blade body and between the blade body and the blade tip; the reinforcing structure is arranged in the cavity of the blade segment.

4. The segmented wind power generation blade according to claim 2, wherein the blade body comprises two core plates, the blade body is connected with reinforcing structures at splicing ends of the blade body and She Tou and blade tips, and a structure with a trapezoid cross section is formed between the reinforcing structures and the core plates.

5. The segmented wind power generation blade of claim 2, wherein the core of She Tou is a curved panel; or the blade head comprises a plurality of plane core plates, and the plane core plates are mutually spliced to form a curved surface structure; the blade tip comprises two core plates connected in an included angle, and a tip is formed at one end far away from the blade body.

6. A segmented wind power blade according to claim 3, wherein the blade body is of a progressive configuration with a gradually decreasing cross-sectional dimension, the dimensions of the blade segments being different.

7. The segmented wind power generation blade according to claim 6, wherein the blade tips of the blade segments are connected by sleeving to form a blade tip transport group for transport; the blade bodies of the blade segments are sleeved to form a blade body transporting group, and the core plates of the blade bodies are connected with the reinforcing structure into a whole for transportation; selecting two blade tips with the largest size from the blade tips of each blade segment, placing the blade tips in a positive and negative contact mode to form an N-shaped mode, and stacking small-size blade tips in the two blade tips respectively to form a blade tip transport group.

8. A segmented wind power generation blade according to claim 3, wherein the reinforcing structure is arranged along the length direction after the blade segments are spliced to form the blade body, and the reinforcing structure is She Hangjia, and the blade truss comprises an upper beam, a lower beam and a plurality of supporting tubes arranged between the upper beam and the lower beam; the upper beam and the lower beam are respectively provided with a clamping part connected with the core plate; the end parts of the upper beam and the lower beam are provided with flanges, and adjacent blade segments are connected through the flanges to form the blade body.

9. The segmented wind power generation blade of claim 2, wherein the core plate is a stainless steel or aluminum core plate, the core plate comprising a face plate, a sandwich layer, a face plate; the sandwich layer is of a honeycomb structure, a core tube array or a corrugated structure.

10. A method of transporting a segmented wind turbine blade, comprising the steps of:

11. The method for transporting the segmented wind turbine blades as set forth in claim 10, wherein the She Tou transporting group, the blade transporting group and the blade tip transporting group are connected at both ends with end frames, and corner fittings are arranged on the end frames, which meet the container transportation standard.