CN116044651A

CN116044651A - Blade beam structure, wind power blade and wind power equipment

Info

Publication number: CN116044651A
Application number: CN202310004505.4A
Authority: CN
Inventors: 何佳浩; 胡杰
Original assignee: Sany Renewable Energy Co Ltd
Current assignee: Sany Renewable Energy Co Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-02
Also published as: ES2953367A2; BR102023016405A2; ES2953367B2; ES2953367R1

Abstract

The invention belongs to the technical field of wind power equipment, and particularly relates to a blade beam structure, a wind power blade and wind power equipment. The blade beam structure includes: the plurality of pultrusion plates are stacked along the height direction, and an installation gap is arranged between any two adjacent pultrusion plates, so that the device is suitable for filling a curing material; a limiting structure is arranged between any two adjacent pultruded plates, the limiting structure comprises a first sub-limiting structure and a second sub-limiting structure, the first sub-limiting structure is arranged on one of the pultruded plates, the second sub-limiting structure is arranged on the other pultruded plate, and the second sub-limiting structure is matched with the first sub-limiting structure in a one-to-one clamping fit with the first sub-limiting structure. According to the technical scheme, the one-to-one clamping fit of the limiting structures is utilized, the problem of the beam Bian Fu resin caused by the chord direction dislocation of the pultrusion plate can be effectively prevented, the performance of the blade is prevented from being influenced, meanwhile, the processing and the assembly are convenient, the forming efficiency is improved, and the quality inspection time and the cost are reduced.

Description

Blade beam structure, wind power blade and wind power equipment

Technical Field

The invention belongs to the technical field of wind power equipment, and particularly relates to a blade beam structure, a wind power blade and wind power equipment.

Background

Currently, with the development of wind power technology and the trend of large-scale blades, a pultruded plate with a higher specific modulus is widely used in the blades of wind power equipment, and a beam structure, such as a blade main beam, is generally formed by stacking and assembling a plurality of pultruded plates in the height direction, and is cured by pouring resin. The chord direction dislocation of the pultrusion plate is easy to occur in the transferring process, namely the pultrusion plate is offset in the width direction of the main beam, the dislocation of the pultrusion plate and the positions of other pultrusion plates occurs, the size of the two ends of the offset pultrusion plate is changed, the problem of the Bian Fu resin of the beam is easy to occur after the resin is poured, and the mechanical property of the blade is affected.

Disclosure of Invention

In view of the above, the present invention provides a blade-beam structure, a wind power blade, and a wind power plant, in order to improve at least one of the above problems existing in the prior art.

A first aspect of the present invention provides a blade beam structure comprising: the plurality of pultrusion plates are stacked along the height direction, and an installation gap is arranged between any two adjacent pultrusion plates, and is suitable for filling a curing material; wherein, be equipped with limit structure between two arbitrary adjacent pultrusion boards, limit structure includes first sub limit structure and second sub limit structure, and first sub limit structure is located on one of them pultrusion board, and second sub limit structure is located on another pultrusion board, and second sub limit structure and first sub limit structure looks adaptation to form one-to-one joint cooperation with first sub limit structure.

The beneficial effects in the technical scheme of the invention are as follows:

through improvement and optimization to the structure, through being equipped with limit structure between adjacent pultrusion board to utilize the joint cooperation between first sub limit structure and the second sub limit structure, carry out spacingly to the pultrusion board on the width direction, prevent that the pultrusion board from taking place the skew, can prevent effectively that the chord direction dislocation from leading to because of the pultrusion board skew after blade beam structure assembles in the blade body, thereby prevent to influence the mechanical properties of blade because of appearing roof beam Bian Fu resin problem after pouring the resin. Wherein, limit structure's first sub limit structure and the mutual adaptation of second sub limit structure to form one-to-one joint cooperation, need not extra auxiliary structure or through a plurality of limit structure combinations, limit structure's simple structure, the assembly of being convenient for can be applicable to the blade beam structure that two at least pultrusion boards are constituteed, and the suitability is stronger. In addition, the blade beam structure in the embodiment can prevent the pultrusion plate from generating chordwise dislocation in a limited way, so that the forming efficiency of the blade beam structure is improved, the later quality inspection time is reduced, the investment of forming tools can be reduced or even avoided, and the cost is further reduced.

In one possible implementation, the first sub-limiting structure comprises a groove structure; the second sub-limiting structure comprises a protruding structure; the protruding structure stretches into the groove structure and forms clamping fit.

In one possible implementation, the dimensions of the groove structures are larger than the dimensions of the projection structures in the width direction of the pultruded panel, and the dimensional difference is in the range of 1mm to 2 mm.

In one possible implementation, the cross-sectional shape of the raised structure includes any one or more of rectangle, trapezoid, triangle, arc; the cross-sectional shape of the groove structure is matched with the protruding structure.

In one possible implementation, the installation gap between any two adjacent pultruded panels is provided with a guiding cloth for guiding the solidified material.

In one possible implementation, the first sub-limiting structure and the second sub-limiting structure are respectively integrated with the corresponding pultruded panels.

In one possible implementation, the plurality of pultruded panels includes a first pultruded panel and a second pultruded panel located above the first pultruded panel.

In one possible implementation, the plurality of pultruded panels includes a first pultruded panel, a second pultruded panel located above the first pultruded panel, and at least one intermediate pultruded panel located between the first and second pultruded panels.

In one possible implementation, the intermediate pultruded panel includes:

the third pultrusion plate is provided with a first sub-limiting structure on the bottom surface and a second sub-limiting structure on the top surface; and/or

The bottom surface of the fourth pultrusion plate is provided with a second sub-limiting structure, and the top surface of the fourth pultrusion plate is provided with a first sub-limiting structure; and/or

The top surface and the bottom surface of the fifth pultrusion plate are respectively provided with a first sub-limiting structure; and/or

And the top surface and the bottom surface of the sixth pultrusion plate are respectively provided with a second sub-limiting structure.

In one possible implementation, the plurality of limiting structures are aligned in the width direction of the pultruded panel.

In one possible implementation, at least two limiting structures are arranged offset in the width direction of the pultruded panel.

The second aspect of the present invention also provides a wind power blade comprising: a blade body; the blade beam structure according to any one of the above, provided in the blade body.

A third aspect of the invention also provides a wind power plant comprising: a wind power blade according to any one of the preceding claims.

Drawings

FIG. 1 is a schematic diagram of one implementation of a blade-beam structure provided in accordance with one embodiment of the present invention.

FIG. 2 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with one embodiment of the present invention.

FIG. 3 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 4 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 5 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 6 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 7 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 8 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating yet another implementation of a blade-beam structure provided by an embodiment of the present invention.

FIG. 10 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 11 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 12 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 13 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 14 is a schematic view of yet another implementation of a blade-beam structure provided in accordance with an embodiment of the present invention.

FIG. 15 is a schematic block diagram of a wind power blade according to an embodiment of the present invention.

FIG. 16 is a schematic block diagram of a wind power plant according to an embodiment of the present invention.

In the above figures, W represents the width direction and H represents the height direction.

Detailed Description

In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back, top, bottom … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Furthermore, references herein to "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Summary of the application

In the wind power field, with the development of wind power technology and the trend of blade enlargement, in order to reduce the overall weight of the blade, a pultruded plate with a higher specific modulus is widely used in the blade of wind power equipment. In general, a beam structure of a blade is usually formed by stacking and assembling a plurality of pultruded plates, such as a blade main beam, in a height direction, and pouring resin for curing. However, since the traditional pultruded blade girder is easy to be subjected to chordwise dislocation in the transferring process, namely, the pultruded plate is offset in the width direction of the girder and is misplaced with other pultruded plates, the size of the two ends of the pultruded plate is changed, and the problem of Bian Fu resin of the girder is easy to be generated after resin is poured.

It will be appreciated that the poor mechanical properties of the resin rich regions result in reduced strength, stiffness, etc. parameter indicators of the blade in the resin rich regions, thereby affecting the overall performance of the blade. Therefore, how to prevent Liang Bianfu resin problems of the blade girder after resin injection becomes a problem to be solved in the production and manufacturing links of wind power equipment. For this reason, some manufacturers provide a solution, through the mutual concatenation of a plurality of pultrusion boards upper and lower layers, prevent that the pultrusion board from taking place the skew in width direction (i.e. chordwise), but this scheme setting method is comparatively complicated, and is inconvenient for the assembly, and just is suitable for two-layer pultrusion board, and application scope is less, is unfavorable for using in large-scale blade.

Some embodiments of the blade-beam structure, the wind power blade and the wind power equipment in the technical scheme of the invention are provided below.

In an embodiment of the first aspect of the invention a blade-beam structure 1 is provided. As shown in fig. 1 and 2, the blade-beam structure 1 includes a plurality of pultruded panels 11, the plurality of pultruded panels 11 are stacked in the height direction, and an installation gap 12 is provided between any adjacent two of the pultruded panels 11; after the blade-beam structure 1 is assembled to the wind power blade, the cured material may be filled in the installation gap 12 by pouring the cured material such as resin. A limiting structure 13 is arranged between any two adjacent pultruded panels 11, and comprises a first sub-limiting structure 131 and a second sub-limiting structure 132 which are respectively arranged on the side surfaces of one side of the two adjacent pultruded panels 11 opposite to each other; the first sub-limiting structure 131 and the second sub-limiting structure 132 are adapted, and can form one-to-one clamping fit, that is, the first sub-limiting structure 131 and the second sub-limiting structure 132 are mutually clamped, so as to limit the pultruded panel 11 in the width direction.

Among the two adjacent pultruded panels 11, the first sub-limiting structure 131 is disposed on one of the pultruded panels 11, and the second sub-limiting structure 132 is disposed on the other pultruded panel 11. For example, in the example of fig. 1, the first sub-limit structure 131 is provided on the bottom surface of the upper pultruded panel 11, the second sub-limit structure 132 is provided on the top surface of the lower pultruded panel 11, or, as in the example of fig. 2, the second sub-limit structure 132 is provided on the bottom surface of the upper pultruded panel 11, and the first sub-limit structure 131 is provided on the top surface of the lower pultruded panel 11. The limiting effect can be realized by the arrangement mode.

It should be noted that the specific number of the pultruded panels 11 is not limited to two as shown in fig. 1 and 2, but may be other numbers larger than two. In addition, the limiting structure 13 and the corresponding pultruded panel 11 may be an integrally formed structure, or may be a split structure assembled into a single integral structure by some connection method (such as adhesion, clamping, etc.).

It can be understood that if the pultrusion plates are all of flat plate structures and have no corresponding limiting structures, the phenomenon that the individual pultrusion plates are deviated easily occurs in the transferring process, and chord direction dislocation occurs after the assembly of the pultrusion plates on the blade, so that Liang Bianfu resin problem is formed after resin filling, and the mechanical property of the blade is affected.

According to the blade beam structure 1 in the embodiment, through structural improvement, the limiting structure 13 can be used for limiting the width direction between any two adjacent layers of pultrusion plates 11, and the problem of Liang Bianfu resin caused by chordwise dislocation after the assembly of the blade can be effectively prevented. Moreover, the first sub-limiting structure 131 and the second sub-limiting structure 132 of the limiting structure 13 are matched in a one-to-one clamping manner, no additional auxiliary structure is needed, and no splicing and combination of limiting structures on a larger number of pultrusion plates 11 are needed, so that the limiting structure 13 in the embodiment is simple in structure, convenient to process and assemble, applicable to the blade beam structure 1 formed by two or more pultrusion plates 11, high in applicability, capable of setting a corresponding number of pultrusion plates 11 according to the size requirement of the blade, and particularly applicable to large-scale wind power blades.

In addition, the blade beam structure 1 in the embodiment can prevent the pultrusion plate 11 from being displaced in the chord direction, so that the forming efficiency of the blade beam structure 1 is improved, the later quality inspection time is reduced, the investment of forming tools can be reduced or even avoided, and the cost is further reduced.

It should be noted that, the examples in fig. 1, 2 and the following figures are all in a state where the pultruded panels 11 are not yet poured with the solidified material. The blade beam structure 1 in the embodiment of the invention can be used as a blade main beam when applied to a wind power blade, and can be used as other beam structures in the blade. The same is true in the following embodiments, and the description thereof will be omitted.

In a further embodiment of the present invention, as shown in fig. 1 and 2, in the limiting structure 13, the first sub-limiting structure 131 includes a groove structure, and the second sub-limiting structure 132 includes a protrusion structure. The shape and size of the protruding structure are matched with those of the groove structure, and the protruding structure extends into the groove structure to play a limiting role in the width direction through the protruding structure and the groove structure, so that the pultrusion panel 11 is prevented from shifting in the width direction.

The groove structure and the protruding structure in the embodiment are simpler, and form one-to-one clamping fit, so that the processing and the assembly are easy.

Further, the protrusion structure and the groove structure may take different structural forms. The cross section of the convex structure comprises any one or more of rectangle, trapezoid, triangle and arc, and the cross section of the groove structure is matched with the convex structure. For example, in the examples of fig. 1 and 2, the cross-sectional shape of both the raised structures and the recessed structures are rectangular; for example, in the example of fig. 3, the cross-sectional shapes of the protrusion structures and the groove structures are each arc-shaped; for example, in the example of fig. 4, the cross-sectional shape of both the raised structures and the recessed structures are trapezoidal; for example, in the example of fig. 5, the cross-sectional shapes of the protrusion structures and the groove structures are triangular. The above-mentioned several shape structures are easy to process, and conveniently carry out joint cooperation, can reduce the degree of difficulty when drawing the crowded board 11 equipment operation, especially under the condition that drawing crowded board 11 quantity is more, the effect is more obvious.

Of course, the specific cross-sectional shapes of the protrusion structures and the groove structures are not limited to the several forms shown in fig. 1 to 5, and in actual production, other shapes of the protrusion structures and the groove structures may be provided according to the specific circumstances.

Further, as shown in fig. 6, in the width direction of the pultruded panels 11, the dimension d1 of the groove structure is larger than the dimension d2 of the protrusion structure, and the dimension difference d1-d2 is in the range of 1mm to 2mm, i.e., the width dimension of the groove structure is slightly larger than the width dimension of the protrusion structure, so that a certain gap is maintained between both side walls of the protrusion structure and corresponding side walls in the groove structure, as a part of the installation gap 12, so that the installation gap 12 between the two pultruded panels 11 penetrates in the width direction and passes through the mating surfaces of the protrusion structure and the groove structure, so that after the cured material such as resin is poured, the cured material can be filled into the mating surfaces of the protrusion structure and the groove structure.

Further, as shown in fig. 6, the blade beam structure 1 further comprises a guiding cloth 14. A guide cloth 14 is laid in the installation gap 12 between any two adjacent pultrusion panels 11, so that after the curing material such as resin is poured, the curing material is guided to flow from outside to inside by the guide cloth 14, so as to fully fill the inside of the installation gap 12 (especially the matching surface of the convex structure and the concave structure). It will be appreciated that since the size of the mounting gap 12 is generally relatively small, if it is difficult to sufficiently fill the inside of the mounting gap 12 (particularly when the width dimension of the pultrusion panel 11 is large) by the natural flow of the curing material such as resin only after the resin filling operation, there is a turning area on the mating surface of the protrusion structure and the groove structure, which has a certain blocking effect on the flow of the curing material such as resin. Through setting up water conservancy diversion cloth 14 can utilize the absorption effect guide resin etc. solidification material of water conservancy diversion cloth 14 to the inside flow of installation clearance 12, can accelerate the velocity of flow moreover, is favorable to improving the efficiency of pouring operation.

Further, as shown in fig. 1 to 6, the first sub-limiting structure 131 and the second sub-limiting structure 132 are respectively integrated with the corresponding pultruded panels 11. For example, in the example of fig. 6, the first sub-limiting structure 131 is located on the bottom surface of the upper pultruded panel 11, and may be formed by direct grooving or integral casting on the bottom surface of one flat panel; the second sub-limit structure 132 is located on the top surface of the lower pultruded panel 11 and may be formed by cutting or integrally casting on the top surface of one flat panel. The integrally formed pultruded panels 11 and limiting structures 13 can reduce the number of simplified structures, and the subsequent connection processing (such as bonding processing or clamping assembly) is not needed, and the overall strength performance of the pultruded panels 11 is better.

In a further embodiment of the present invention, as shown in fig. 1 to 6, the plurality of pultruded panels 11 includes a first pultruded panel 111 and a second pultruded panel 112, and the first pultruded panel 111 is located above the second pultruded panel 112. Among the first pultruded panel 111 and the second pultruded panel 112, one is provided with a first sub-limiting structure 131, and the other is provided with a second sub-limiting structure 132. In the arrangement of the present embodiment, the number of the pultruded panels 11 is two, and the limiting structures 13 are provided only on the surfaces of the two pultruded panels 11 facing each other, so as to limit the first and second

pultruded panels

111 and 112 in the width direction. The blade beam structure 1 formed by stacking the two pultrusion plates 11 has relatively small dimension in the height direction, and can be suitable for the region with lower requirement on the height in the wind power blade. The length, width, height, etc. dimensions of the first and second

pultruded panels

111 and 112 may be designed according to specific production requirements.

In a further embodiment of the present invention, as shown in fig. 7, the plurality of pultruded panels 11 of the blade girder structure 1 comprises a first pultruded panel 111, a second pultruded panel 112 and an intermediate pultruded panel 113. The second pultruded panel 112 is located above the first pultruded panel 111 and the intermediate pultruded panel 113 is located between the first pultruded panel 111 and the second pultruded panel 112. Wherein the number of intermediate pultruded panels 113 may be one or more, as in the example of fig. 7, one intermediate pultruded panel 113 is provided between the first and second

pultruded panels

111 and 112, or as in the example of fig. 8, a plurality of intermediate pultruded panels 113 are stacked between the first and second

pultruded panels

111 and 112. Limiting structures 13 are arranged between the first pultruded plate 111 and the middle pultruded plate 113, between the second pultruded plate 112 and the middle pultruded plate 113 and between the middle pultruded plate 113 and the middle pultruded plate 113, so that one-to-one clamping fit can be formed between any two adjacent pultruded plates 11 through the first sub-limiting structures 131 and the second sub-limiting structures 132, and a limiting effect can be achieved on each pultruded plate 11.

Further, the intermediate pultrusion panels 113 have a plurality of different implementations according to different arrangement forms of the limiting structures 13, which are listed below.

In one particular implementation, as shown in fig. 7 and 8, the intermediate pultruded panels 113 include a third pultruded panel 1131. The bottom surface of the third pultrusion plate 1131 is provided with a first sub-limiting structure 131 (such as a groove structure in the figure), and the top surface is provided with a second sub-limiting structure 132 (such as a protrusion structure in the figure); correspondingly, the top surface of the first pultrusion plate 111 is correspondingly provided with a second sub-limiting structure 132, and forms clamping fit with the first sub-limiting structure 131 on the bottom surface of the adjacent third pultrusion plate 1131; the bottom surface of the second pultrusion plate 112 is correspondingly provided with a first sub-limiting structure 131, and forms a clamping fit with the second sub-limiting structure 132 on the top surface of the adjacent third pultrusion plate 1131. The third pultruded panel 1131 may be one or a plurality of third pultruded panels.

In another specific implementation, as shown in fig. 9, the intermediate pultruded panel 113 includes a fourth pultruded panel 1132, the second sub-limiting structures 132 are disposed on the bottom surface of the fourth pultruded panel 1132, and the first sub-limiting structures 131 are disposed on the top surface. Correspondingly, the top surface of the first pultrusion plate 111 is correspondingly provided with a first sub-limiting structure 131, and forms clamping fit with a second sub-limiting structure 132 on the bottom surface of the adjacent fourth pultrusion plate 1132; the bottom surface of the second pultrusion plate 112 is correspondingly provided with a second sub-limiting structure 132, and forms a clamping fit with the first sub-limiting structure 131 on the top surface of the fourth pultrusion plate 1132. The number of the fourth pultruded panels 1132 may be one as in fig. 9, but the number of the fourth pultruded panels 1132 may be plural.

In yet another specific implementation, as shown in FIG. 10, the intermediate pultruded panel 113 includes a fifth pultruded panel 1133. The top surface and the bottom surface of the fifth pultrusion plate 1133 are respectively provided with a first sub-limiting structure 131; correspondingly, the top surface of the first pultrusion plate 111 is correspondingly provided with a second sub-limiting structure 132, and forms clamping fit with the first sub-limiting structure 131 on the bottom surface of the adjacent fifth pultrusion plate 1133; the bottom surface of the second pultrusion plate 112 is correspondingly provided with a second sub-limiting structure 132, and forms a clamping fit with the first sub-limiting structure 131 on the top surface of the adjacent fifth pultrusion plate 1133. Wherein the number of fifth pultruded panels 1133 may be one as shown in fig. 10; when a plurality of fifth pultruded panels 1133 is required, as in the example of fig. 11, the plurality of fifth pultruded panels 1133 may be used together with other pultruded panels having the second sub-limiting structures 132 (such as the sixth pultruded panel 1134 shown in the drawing).

In yet another specific implementation, as shown in FIG. 12, the intermediate pultruded panel 113 includes a sixth pultruded panel 1134. The top surface and the bottom surface of the sixth pultrusion plate 1134 are respectively provided with a second sub-limiting structure 132; correspondingly, the top surface of the first pultrusion plate 111 is correspondingly provided with a first sub-limiting structure 131, and is in clamping fit with a second sub-limiting structure 132 on the bottom surface of an adjacent sixth pultrusion plate 1134; the bottom surface of the second pultrusion plate 112 is correspondingly provided with a first sub-limiting structure 131, and the second sub-limiting structure 132 on the top surface of the adjacent sixth pultrusion plate 1134 is in clamping fit. Wherein the number of sixth pultruded panels 1134 may be one as shown in fig. 12; when a plurality of sixth pultruded panels 1134 is required, as illustrated in fig. 13, the plurality of sixth pultruded panels 1134 may be used together with other pultruded panels having the first sub-limiting structures 131 (such as the fifth pultruded panel 1133 shown in the drawings).

The above are several specific implementation manners of the intermediate pultrusion panels 113, and according to different requirements of actual heights, a corresponding number of intermediate pultrusion panels 113 may be arranged between the first pultrusion panel 111 and the second pultrusion panel 112 to reach the target height; meanwhile, the intermediate pultruded panels 113 may take different forms depending on the actual use requirements. Of course, the intermediate pultrusion panels 113 may be configured in other combinations and configurations, which will not be described herein.

In a further embodiment of the present invention, as shown in fig. 7 to 13, in the blade beam structure 1, a plurality of limit structures 13 in the height direction are aligned in the width direction of the pultrusion panel 11, so that the limit structures 13 corresponding to the top and bottom surfaces of the intermediate pultrusion panel 113 are all located at the same position, and only a height difference exists; correspondingly, the first and second

pultruded panels

111 and 112 are each adapted to the intermediate pultruded panel 113. The above alignment setting mode, whether it is the first sub-limit structure 131 or the second sub-limit structure 132, the positions of which in the width direction are the same, need not to repeatedly perform operations such as positioning in the processing process, and can further reduce the processing difficulty.

In a further embodiment of the present invention, as shown in fig. 14, in the blade beam structure 1, at least two of the limiting structures 13 are arranged offset in the width direction of the pultruded panel 11, for example, the first sub-limiting structure 131 on the top surface and the first sub-limiting structure 131 on the bottom surface of the fifth pultruded panel 1133 in fig. 14 are not located at the same width position, and the second sub-limiting structure 132 on the top surface and the second sub-limiting structure 132 on the bottom surface of the sixth pultruded panel 1134 are also not located at the same width position. In the above dislocation arrangement manner, processing of the limit structure at the same width position on the top and bottom surfaces of the intermediate pultrusion panel 113 can be avoided, so as to prevent the strength of the pultrusion panel from being reduced. Taking fig. 14 as an example, when the thickness dimension (i.e., the dimension in the height direction) of the fifth pultruded panel 1133 is relatively small, if the second sub-limiting structures 132 (slots) are machined at the same width position on the top surface and the bottom surface of the fifth pultruded panel 1133 at the same time, the thickness of the fifth pultruded panel 1133 at that position is greatly reduced, which is likely to cause a decrease in strength, and may affect the overall system performance of the blade-beam structure 1.

Further, in any of the above embodiments, as shown in fig. 1 to 14, rounded corners (including corners at both ends and corners of the first and second sub-stopper structures 131 and 132) may be provided on the pultruded panel 11 to perform a flow guiding function when pouring a curing material such as a resin, thereby further improving the pouring efficiency.

The following is a specific embodiment of the blade-beam structure 1 of the present invention.

As shown in fig. 7 and 14, the blade-beam structure 1 includes a plurality of pultruded panels 11, the plurality of pultruded panels 11 are stacked in the height direction, and an installation gap 12 is provided between any adjacent two of the pultruded panels 11; after the blade-beam structure 1 is assembled to the wind power blade, the cured material may be filled in the installation gap 12 by pouring the cured material such as resin; the blade girder structure 1 can be used as a girder of a wind power blade or a girder structure at other positions to be fixed in the wind power blade. A limiting structure 13 is arranged between any two adjacent pultruded panels 11, and the limiting structure 13 comprises a first sub-limiting structure 131 and a second sub-limiting structure 132 which are respectively arranged on the side surfaces of one sides of the two adjacent pultruded panels 11. The first sub-limiting structure 131 is specifically a groove structure, the second sub-limiting structure 132 is specifically a protrusion structure, the protrusion structure is matched with the groove structure, and the protrusion structure extends into the groove structure to form one-to-one clamping fit, so that the pultrusion plate 11 is limited in the width direction. The protruding structure and the corresponding pultruded plate are integrally formed, and the groove structure and the corresponding pultruded plate are integrally formed.

As illustrated in fig. 6, a guide cloth 14 is laid in the installation gap 12 between any adjacent two of the pultruded panels 11 to serve as a guide when pouring a curing material such as a resin. In addition, corners of the pultruded panels 11 are provided with rounded corners to provide a flow guiding effect on the cured material such as resin.

Wherein, in two adjacent pultruded panels 11, the groove structure is arranged on one of the pultruded panels 11, and the protrusion structure is arranged on the other pultruded panel 11. In the width direction of the pultruded panels 11, the dimension d1 of the groove structure is larger than the dimension d2 of the protrusion structure, and the dimension difference d1-d2 is in the range of 1mm to 2mm, i.e., the width dimension of the groove structure is slightly larger than the width dimension of the protrusion structure, so that a certain gap is kept between both side walls of the protrusion structure and corresponding side walls in the groove structure as a part of the installation gap 12, so that the installation gap 12 between the two pultruded panels 11 is penetrated in the width direction and penetrates the mating surfaces of the protrusion structure and the groove structure, so that after the cured material such as resin is poured, the cured material can be filled into the mating surfaces of the protrusion structure and the groove structure.

Wherein, the protruding structure and the groove structure can adopt different structural forms. As shown in fig. 1 to 5, the cross-sectional shape of the protrusion structure includes any one or more of rectangle, trapezoid, triangle, arc, and the cross-sectional shape of the groove structure is adapted to the protrusion structure.

Rounded corners may be provided at corners (including corners at both ends and corners of the first and second sub-stopper structures 131 and 132) of the pultruded panel 11, so as to play a role of guiding flow when pouring a curing material such as a resin,

the intermediate pultruded panels 113 have a number of different implementations, as several specific implementations of the intermediate pultruded panels 113 are shown in fig. 7-14: a third pultruded panel 1131, a fourth pultruded panel 1132, a fifth pultruded panel 1133, and a sixth pultruded panel 1134. The blade beam structure 1 can only adopt one form of the middle pultrusion plate 113, and can also adopt a plurality of different forms for matching and combination; the number of intermediate pultruded panels 113 may be one or more depending on the particular arrangement. Wherein, the limiting structures 13 are disposed between the first pultruded panel 111 and the adjacent intermediate pultruded panel 113, between the second pultruded panel 112 and the adjacent intermediate pultruded panel 113, and between the intermediate pultruded panel 113 and the adjacent intermediate pultruded panel 113, and the groove structures and the protruding structures of the limiting structures 13 are utilized to perform the limiting function in the width direction. Depending on the requirements of the assembly height, a corresponding number of intermediate pultruded panels 113 may be provided to achieve the target height.

In addition, as in the examples in fig. 7 to 13, the stopper structures 13 different in the height direction may be provided in alignment in the width direction; of course, the stopper structure 13 may be arranged so as to be displaced in the width direction.

In an embodiment of the second aspect of the invention a wind power blade 2 is also provided. As shown in fig. 1 and 15, the wind power blade 2 includes a blade body 21 and the blade girder structure 1 in any of the above embodiments, and the blade girder structure 1 is disposed in the blade body 21 to serve as a girder of the wind power blade 2 or a girder at other positions. After the blade-beam structure 1 is assembled to the blade body 21, the blade-beam structure 1 is fixed to the blade body 21 by pouring a curing material such as a resin.

The limiting structure 13 is used for limiting the positions of any two adjacent pultrusion plates 11 in the blade beam structure 1 in the width direction, so that the dislocation of the pultrusion plates 11 in the chord direction of the blade body 21 is prevented, the phenomenon of the beam Bian Fu resin is avoided, and the influence on the mechanical properties of the wind power blade 2 is prevented.

In addition, the wind power blade 2 in this embodiment further has all the advantages of the blade beam structure 1 in any of the foregoing embodiments, and will not be described herein.

In an embodiment of the third aspect of the present invention, as shown in fig. 1, 15 and 16, a wind power plant 3 is provided, where the wind power plant 3 includes the wind power blade 2 in any of the above embodiments, so that wind power generation is achieved by using rotation of the wind power blade 2 under the wind force.

Further, according to specific practical requirements, the wind power equipment 3 may further include a host structure, a supporting structure, and the like. The wind power blade 2 is connected with the host structure to drive the host structure to rotate, so as to realize power generation; the supporting structure is used for supporting the host structure to enable the host structure to be at a certain height.

In addition, the wind power equipment 3 in this embodiment also has all the beneficial effects of the wind power blade 2 in any of the foregoing embodiments, and will not be described herein.

The basic principles of the present invention have been described above in connection with specific embodiments, however, it should be noted that the advantages, benefits, effects, etc. mentioned in the present invention are merely examples and not intended to be limiting, and these advantages, benefits, effects, etc. are not to be considered as essential to the various embodiments of the present invention. Furthermore, the specific details disclosed herein are for purposes of illustration and understanding only, and are not intended to be limiting, as the invention is not necessarily limited to practice with the above described specific details.

The block diagrams of the devices, apparatuses, devices, systems referred to in the present invention are only illustrative examples and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, the devices, apparatuses, devices, systems may be connected, arranged, configured in any manner. Words such as "including," "comprising," "having," and the like are words of openness and mean "including but not limited to," and are used interchangeably therewith. The terms "or" and "as used herein refer to and are used interchangeably with the term" and/or "unless the context clearly indicates otherwise. The term "such as" as used herein refers to, and is used interchangeably with, the phrase "such as, but not limited to. It should also be noted that in the apparatus and device of the present invention, the components may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof. The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features herein.

The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as presently claimed, and is intended to cover all modifications, alternatives, and equivalents falling within the spirit and scope of the invention.

Claims

1. A blade beam structure, comprising:

a plurality of pultrusion plates (11) stacked in the height direction, wherein a mounting gap (12) is arranged between any two adjacent pultrusion plates (11), and the mounting gap (12) is suitable for filling a curing material;

wherein, arbitrary adjacent two be equipped with limit structure (13) between pultrusion board (11), limit structure (13) include first sub-limit structure (131) and second sub-limit structure (132), first sub-limit structure (131) are located on one of them pultrusion board (11), second sub-limit structure (132) are located another on pultrusion board (11), second sub-limit structure (132) with first sub-limit structure (131) looks adaptation, and with first sub-limit structure (131) form one-to-one joint cooperation.

2. The blade beam structure according to claim 1, wherein,

the first sub-limit structure (131) comprises a groove structure;

the second sub-limit structure (132) comprises a raised structure;

the protruding structure stretches into the groove structure and forms clamping fit.

3. The blade beam structure according to claim 2, wherein,

the dimensions of the groove structures are larger than the dimensions of the projection structures in the width direction of the pultrusion plate (11), and the dimensional difference is in the range of 1mm to 2 mm.

4. The blade beam structure according to claim 2, wherein,

the cross section shape of the convex structure comprises any one or more of rectangle, trapezoid, triangle and arc;

the cross-sectional shape of the groove structure is matched with that of the protrusion structure.

5. The blade beam structure according to claim 2, wherein,

the installation gap (12) between any two adjacent pultrusion plates (11) is provided with a guide cloth (14), and the guide cloth (14) is used for guiding the solidified material.

6. The blade beam structure according to claim 1, wherein,

the first sub-limiting structure (131) and the second sub-limiting structure (132) are respectively integrated with the corresponding pultrusion plate (11).

7. The blade beam structure according to any one of claims 1 to 6, characterized in that,

the plurality of pultruded panels (11) comprises a first pultruded panel (111) and a second pultruded panel (112), the second pultruded panel (112) being located above the first pultruded panel (111).

8. The blade beam structure according to any one of claims 1 to 6, characterized in that,

the plurality of pultruded panels (11) comprises a first pultruded panel (111), a second pultruded panel (112) and at least one intermediate pultruded panel (113), the second pultruded panel (112) being located above the first pultruded panel (111), the intermediate pultruded panel (113) being located between the first pultruded panel (111) and the second pultruded panel (112).

9. The blade girder construction according to claim 8, wherein the intermediate pultruded panels (113) comprise:

the third pultrusion plate (1131), the bottom surface of the third pultrusion plate (1131) is provided with the first sub-limiting structure (131), and the top surface of the third pultrusion plate (1131) is provided with the second sub-limiting structure (132); and/or

The bottom surface of the fourth pultrusion plate (1132) is provided with the second sub-limiting structure (132), and the top surface of the fourth pultrusion plate (1132) is provided with the first sub-limiting structure (131); and/or

The top surface and the bottom surface of the fifth pultrusion plate (1133) are respectively provided with the first sub-limiting structure (131); and/or

And the top surface and the bottom surface of the sixth pultrusion plate (1134) are respectively provided with the second sub-limiting structure (132).

10. Blade-beam structure according to claim 9, characterized in that

The limiting structures (13) are aligned in the width direction of the pultrusion plate (11).

11. The blade beam structure according to claim 9, wherein,

at least two limit structures (13) are arranged in a staggered manner in the width direction of the pultrusion plate (11).

12. A wind power blade, comprising:

a blade body;

a blade girder construction according to any one of claims 1 to 11, provided in the blade body.

13. A wind power plant, comprising:

the wind power blade of claim 12.