CN116044651A - Blade beam structure, wind power blades and wind power equipment - Google Patents

Abstract

The invention belongs to the technical field of wind power equipment, and in particular relates to a blade beam structure, a wind power blade and wind power equipment. The blade beam structure includes: a plurality of pultruded plates stacked along the height direction, and there is an installation gap between any two adjacent pultruded plates, which is suitable for filling solidified materials; between any adjacent two pultruded plates There is a limiting structure between them, the limiting structure includes a first sub-limiting structure and a second sub-limiting structure, the first sub-limiting structure is set on one of the pultrusion plates, and the second sub-limiting structure is set on the other On the extruded plate, the second sub-limiting structure is adapted to the first sub-limiting structure, and forms a one-to-one clamping fit with the first sub-limiting structure. Through the technical solution of the present invention, the use of one-to-one clamping fit of the limit structure can effectively prevent the resin-rich problem at the beam edge caused by the chord misalignment of the pultrusion plate, prevent it from affecting the performance of the blade, and facilitate processing and assembly at the same time. It is beneficial to improve molding efficiency and reduce quality inspection time and cost.

Description

Blade beam structure, wind power blades and wind power equipment

technical field

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

Background technique

At present, with the development of wind power technology and the trend of large-scale blades, pultruded sheets with higher specific modulus are widely used in the blades of wind power equipment. Usually, pultruded sheets are used to form a beam structure, such as the main beam of the blade. Multiple pultruded plates are stacked and assembled in the height direction to form the main beam of the blade, and the resin is poured and solidified. Among them, because the pultruded board is prone to chord misalignment during the transfer process, that is, the pultruded board is offset in the width direction of the main beam, and the position of the other pultruded board is misaligned, resulting in the displacement of the shifted pultruded board. The size of the gap at both ends changes, and the resin-rich problem at the beam edge is likely to occur after the resin is poured, which affects the mechanical properties of the blade.

Contents of the invention

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

The first aspect of the present invention provides a blade beam structure, including: a plurality of pultruded plates stacked along the height direction, and an installation gap is provided between any two adjacent pultruded plates, and the installation gap is suitable for filling and curing material; wherein, a limiting structure is provided between any two adjacent pultruded plates, the limiting structure includes a first sub-limiting structure and a second sub-limiting structure, and the first sub-limiting structure is set in one of the pultruded On the plate, the second sub-limiting structure is arranged on another pultruded plate, the second sub-limiting structure is adapted to the first sub-limiting structure, and forms a one-to-one clamping fit with the first sub-limiting structure .

The beneficial effects in the above-mentioned technical scheme of the present invention are reflected in:

Through the improvement and optimization of the structure, by providing a limiting structure between adjacent pultruded plates, the clamping fit between the first sub-limiting structure and the second sub-limiting structure can be used to align the width direction The pultruded plate is limited to prevent the pultruded plate from shifting, which can effectively prevent the chord misalignment caused by the deflection of the pultruded plate after the blade beam structure is assembled on the blade body, so as to prevent the beam edge from being rich in resin after the resin is poured. The problem affects the mechanical properties of the blade. Among them, the first sub-limiting structure and the second sub-limiting structure of the limiting structure are adapted to each other, and form a one-to-one clamping fit, without additional auxiliary structures or through the combination of multiple limiting structures, the limiting structure The structure is simple and easy to assemble, and can be applied to a blade beam structure composed of at least two pultruded plates, and has strong applicability. In addition, since the blade beam structure in this embodiment can limit the chord misalignment of the pultruded board, the forming efficiency of the blade beam structure is improved, which is beneficial to reduce the quality inspection time in the later stage, and can also reduce or even eliminate the investment in molding tooling. Conducive to further reducing costs.

In a feasible implementation manner, the first sub-limiting structure includes a groove structure; the second sub-limiting structure includes a protruding structure; wherein, the protruding structure protrudes into the groove structure and forms a clamping fit.

In a feasible implementation manner, in the width direction of the pultruded plate, the size of the groove structure is larger than the size of the protrusion structure, and the size difference is in the range of 1 mm to 2 mm.

In a feasible implementation manner, the cross-sectional shape of the protruding structure includes any one or more of rectangle, trapezoid, triangle, and arc; the cross-sectional shape of the groove structure is adapted to the protruding structure.

In a feasible implementation manner, a guide cloth is provided in the installation gap between any two adjacent pultrusion plates, and the guide cloth is used to guide the solidified material.

In a feasible implementation manner, the first sub-limiting structure and the second sub-limiting structure are integrally formed with the corresponding pultruded boards.

In a feasible implementation manner, the plurality of pultruded sheets include a first pultruded sheet and a second pultruded sheet, and the second pultruded sheet is located above the first pultruded sheet.

In a feasible implementation manner, the plurality of pultruded sheets include a first pultruded sheet, a second pultruded sheet, and at least one intermediate pultruded sheet, the second pultruded sheet is located above the first pultruded sheet, and the intermediate pultruded sheet The extruded plate is located between the first pultruded plate and the second pultruded plate.

In one possible implementation, the intermediate pultruded sheet includes:

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

For the fourth pultruded board, a second sub-limiting structure is provided on the bottom surface of the fourth pultruded board, and a first sub-limiting structure is provided on the top surface of the fourth pultruded board; and/or

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

The sixth pultruded plate, the top surface and the bottom surface of the sixth pultruded plate are provided with a second sub-limiting structure.

In a feasible implementation manner, a plurality of position-limiting structures are aligned in the width direction of the pultruded plate.

In a feasible implementation manner, at least two position-limiting structures are arranged in an offset in the width direction of the pultruded plate.

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

The third aspect of the present invention also provides wind power equipment, including: the wind power blade in any one of the above items.

Description of drawings

Fig. 1 is a schematic diagram of an implementation of a blade beam structure provided by an embodiment of the present invention.

Fig. 2 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 3 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 4 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 5 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 6 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 7 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 8 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 9 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 10 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 11 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 12 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 13 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 14 is a schematic diagram of another implementation of the blade beam structure provided by an embodiment of the present invention.

Fig. 15 is a schematic block diagram of a wind turbine blade provided by an embodiment of the present invention.

Fig. 16 is a schematic block diagram of a wind power device provided by an embodiment of the present invention.

Wherein, in the above drawings, W represents the width direction, and H represents the height direction.

Detailed ways

In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back, top, bottom...) in the embodiments of the present application are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings) If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Additionally, reference herein to "an embodiment" means 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 occurrences of this phrase 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. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some, not all, embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Application overview

In the field of wind power, with the development of wind power technology and the trend of larger blades, in order to reduce the overall weight of the blades, pultruded sheets with higher specific modulus are widely used in the blades of wind power equipment. Usually, the beam structure of the blade is mostly made of pultruded plates, such as the main beam of the blade. Multiple pultruded plates are stacked and assembled in the height direction to form the main beam of the blade, and the resin is poured into it to cure. However, due to the fact that the traditional pultruded slab blade girder is prone to chord misalignment during the transfer process, that is, the pultruded slab is offset in the width direction of the main beam, and the position of the pultruded slab is misaligned with other pultruded slabs, resulting in the pultruded slab The size of the gap at both ends of the beam changes, and the resin-rich problem at the beam edge is likely to occur after the resin is poured.

It can be understood that the poor mechanical properties of the resin-rich region lead to a decrease in the strength, hardness and other parameters of the blade in the resin-rich region, thereby affecting the overall performance of the blade. Therefore, how to prevent the problem of resin-rich beams on the edge of the main beam of the blade after the resin is poured has become an urgent problem to be solved in the manufacturing process of wind power equipment. To this end, some manufacturers have provided a solution to prevent the offset of the pultruded panels in the width direction (ie, the chord direction) by splicing multiple pultruded panels on the upper and lower layers of multiple pultruded panels. The method is relatively complicated, it is not easy to assemble, and it is only suitable for two-layer pultruded boards, and the scope of application is small, which is not conducive to the application in large blades.

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

In an embodiment of the first aspect of the invention a blade beam structure 1 is provided. As shown in Figures 1 and 2, the blade beam structure 1 includes a plurality of pultruded plates 11. In the height direction, a plurality of pultruded plates 11 are stacked, and any adjacent two pultruded plates 11 are provided with The installation gap 12 ; after the blade beam structure 1 is assembled on the wind power blade, curing material such as resin can be poured, so that the curing material is filled in the installation gap 12 . A limiting structure 13 is provided between any two adjacent pultruded plates 11, including a first sub-limiting structure 131 and a second sub-limiting structure 132, which are respectively arranged on one side of two adjacent pultruded plates 11 facing each other. On the side of the side; the first sub-limiting structure 131 is adapted to the second sub-limiting structure 132, and can form a one-to-one snap fit, that is, a first sub-limiting structure 131 and a second sub-limiting structure 131 The structures 132 are engaged with each other to limit the position of the pultruded plate 11 in the width direction.

Wherein, among two adjacent pultruded plates 11 , the first sub-limiting structure 131 is disposed on one of the pultruded plates 11 , and the second sub-limiting structure 132 is disposed on the other pultruded plate 11 . For example, in the example in FIG. 1, a first sub-limiting structure 131 is provided on the bottom surface of the upper pultruded plate 11, and a second sub-limiting structure 132 is provided on the top surface of the lower pultruded plate 11, or as shown in FIG. 2 In the example in , the second sub-limiting structure 132 is provided on the bottom surface of the upper pultruded board 11 , and the first sub-limiting structure 131 is provided on the top surface of the lower pultruded board 11 . The above setting methods can all realize the limit function.

It should be noted that the specific number of pultruded plates 11 is not limited to two as shown in FIG. 1 and FIG. 2 , and may be other numbers greater than two. In addition, the limiting structure 13 and the corresponding pultruded plate 11 may be integrally formed, or of course a separate structure may be assembled into an integral structure through a certain connection method (such as bonding, clamping, etc.).

It can be understood that if the pultruded plates are all of flat structure and there is no corresponding limit structure, individual pultruded plates are prone to offset during the transfer process, and chord misalignment will occur after being assembled on the blade, resulting in The resin-rich problem at the edge of the beam is formed, which affects the mechanical properties of the blade.

The blade beam structure 1 in this embodiment, through structural improvement, enables any adjacent two-layer pultruded board 11 to be limited in the width direction by a limiting structure 13, which can effectively prevent the Chordal misalignment occurs causing resin-rich beam edge problems. Moreover, the one-to-one clamping fit between the first sub-limiting structure 131 and the second sub-limiting structure 132 of the limiting structure 13 does not require additional auxiliary structures, nor does it need to pass through a larger number of pultruded plates 11 The splicing combination of the limiting structure, the structure of the limiting structure 13 in this embodiment is simple, easy to process and assemble, and can be applied to the blade beam structure 1 composed of two or more pultruded plates 11, which has strong applicability and can be used according to The size of the blade requires a corresponding number of pultruded plates 11, which is especially suitable for application in large wind power blades.

In addition, since the blade beam structure 1 in this embodiment can limitly prevent the chord misalignment of the pultruded plate 11, the forming efficiency of the blade beam structure 1 is improved, which is beneficial to reduce the time for quality inspection in the later stage, and can also reduce or even eliminate the forming tooling The input is conducive to further reducing costs.

It should be noted that the examples in FIG. 1 , FIG. 2 and subsequent drawings are all in the state when the pultruded board 11 is not filled with solidified material. When the blade beam structure 1 in the embodiment of the present invention is applied in a wind power blade, it can be used as the main beam of the blade, and of course it can also be used as other beam structures in the blade. The situation in the following embodiments is the same, and will not be described in detail below.

In a further embodiment of the present invention, as shown in FIG. 1 and FIG. 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 protruding structure. The shape and size of the protruding structure are adapted to the groove structure, and extend into the groove structure to limit the width direction of the pultruded plate 11 through the protruding structure and the groove structure. Offset occurs.

The groove structure and the protrusion structure in this embodiment are relatively simple, and the two form a one-to-one clamping fit, which is easy to process and assemble.

Further, the protrusion structure and the groove structure can adopt different structural forms. The cross-sectional shape of the protruding structure includes any one or more of rectangle, trapezoid, triangle, and arc, and the cross-sectional shape of the groove structure matches the protruding structure. For example, in the examples in Fig. 1 and Fig. 2, the cross-sectional shapes of the protrusion structure and the groove structure are all rectangular; for example in the example in Fig. 3, the cross-sectional shapes of the protrusion structure and the groove structure are all arc-shaped; In the example in 4, the cross-sectional shapes of the protrusion structure and the groove structure are both trapezoidal; for example, in the example in FIG. 5 , the cross-sectional shapes of the protrusion structure and the groove structure are both triangular. The above shapes and structures are easy to process, and are convenient for clamping and fitting, which can reduce the difficulty of assembling the pultruded board 11 , especially when the number of pultruded boards 11 is large, the effect is more obvious.

Of course, the specific cross-sectional shapes of the protrusion structure and the groove structure are not limited to the several forms shown in Fig. 1 to Fig. 5 , in actual production, other shapes of the protrusion structure and the groove structure can also be set according to specific conditions .

Further, as shown in FIG. 6, in the width direction of the pultruded sheet 11, the dimension d1 of the groove structure is larger than the dimension d2 of the convex structure, and the dimension difference d1-d2 is in the range of 1mm to 2mm, that is, the concave 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 the side walls of the protrusion structure and the corresponding side walls of the groove structure, as part of the installation gap 12, so that the two pull The installation gap 12 between the extruded plates 11 runs through in the width direction and passes through the mating surface of the raised structure and the grooved structure, so that after the cured material such as resin is poured, the cured material can fill the raised structure and the grooved structure mating surface.

Further, as shown in FIG. 6 , the blade beam structure 1 further includes a guide cloth 14 . A guide cloth 14 is laid in the installation gap 12 between any two adjacent pultrusion plates 11, so that after the cured material such as resin is poured, the guide cloth 14 is used to guide the cured material to flow from the outside to the inside to fully Fill to the interior of the installation gap 12 (especially the mating surface of the protrusion structure and the groove structure). It can be understood that since the size of the installation gap 12 is generally relatively small, it is difficult to fully fill the inside of the installation gap 12 (especially in the width dimension of the pultrusion board 11) if only relying on the natural flow of cured materials such as resin after the resin pouring operation. Larger), and there is a turning area on the mating surface of the convex structure and the groove structure, which has a certain hindering effect on the flow of cured materials such as resin. By providing the guide cloth 14, the adsorption of the guide cloth 14 can be used to guide the cured material such as resin to flow into the installation gap 12, and the flow speed can be accelerated, which is beneficial to improve the efficiency of the pouring operation.

Further, as shown in FIG. 1 to FIG. 6 , the first sub-limiting structure 131 and the second sub-limiting structure 132 are integrally formed with the corresponding pultruded plate 11 . For example, in the example in FIG. 6, the first sub-limiting structure 131 is located on the bottom surface of the upper pultruded plate 11, and can be formed by direct slotting or integral casting on the bottom surface of a flat plate; the second sub-limiting structure 132 The top surface of the pultruded plate 11 located below can be shaped by cutting or integral casting on the top surface of a flat plate. The integrally formed pultruded plate 11 and the limiting structure 13 can reduce and simplify the structure, without the need for subsequent connection processing (such as bonding processing or clamping assembly, etc.), and the overall strength performance of the pultruded plate 11 is better.

In a further embodiment of the present invention, as shown in FIGS. 1 to 6 , the plurality of pultruded sheets 11 includes a first pultruded sheet 111 and a second pultruded sheet 112 , and the first pultruded sheet 111 is positioned at the second pultruded sheet Extrude the top of the plate 112. Wherein, among the first pultruded board 111 and the second pultruded board 112 , one of them is provided with a first sub-limiting structure 131 , and the other is provided with a second sub-limiting structure 132 . In the setting method in this embodiment, the number of pultruded plates 11 is two, and only on the facing surfaces of the two pultruded plates 11 are provided with a limiting structure 13, so as to provide a fixed distance between the first pultruded plate 111 and the second pultruded plate 111. The pultrusion plate 112 realizes the limitation in the width direction. The blade beam structure 1 formed by stacking two pultruded plates 11 has a relatively small size in the height direction, and can be applied to areas of wind power blades that require less height. Wherein, the length, width and height of the first pultruded board 111 and the second pultruded board 112 can 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 beam structure 1 includes a first pultruded panel 111 , a second pultruded panel 112 and a middle pultruded panel 113 . The second pultruded plate 112 is located above the first pultruded plate 111 , and the middle pultruded plate 113 is located between the first pultruded plate 111 and the second pultruded plate 112 . Wherein, the quantity of the middle pultruded plate 113 can be one or more, as shown in Figure 7, an intermediate pultruded plate 113 is provided between the first pultruded plate 111 and the second pultruded plate 112, or as shown in FIG. In the example in 8, a plurality of intermediate pultruded plates 113 are stacked between the first pultruded plate 111 and the second pultruded plate 112 . Limiting structures 13 are provided 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 any two adjacent pultruded plates 11 can form a one-to-one clamping fit through the first sub-limiting structure 131 and the second sub-limiting structure 132, so that each pultruded plate 11 can Act as a limiter.

Further, according to different arrangement forms of the limiting structure 13, the middle pultruded plate 113 has many different implementation modes, which will be described below.

In a specific implementation manner, as shown in FIGS. 7 and 8 , the middle pultruded plate 113 includes a third pultruded plate 1131 . The bottom surface of the third pultrusion plate 1131 is provided with a first sub-limiting structure 131 (such as the groove structure in the figure), and the top surface is provided with a second sub-limiting structure 132 (the raised structure in the figure); Correspondingly, a second sub-limiting structure 132 is correspondingly provided on the top surface of the first pultruded plate 111, and forms a clamp with the first sub-limiting structure 131 on the bottom surface of the adjacent third pultruded plate 1131. The bottom surface of the second pultruded plate 112 is correspondingly provided with the first sub-limiting structure 131, and forms a snap fit with the second sub-limiting structure 132 on the top surface of the adjacent third pultruded plate 1131 . Wherein, there may be one or more third pultruded plates 1131 .

In another specific implementation, as shown in FIG. 9, the middle pultruded plate 113 includes a fourth pultruded plate 1132, the second sub-limiting structure 132 is provided on the bottom surface of the fourth pultruded plate 1132, and the second sub-limiting structure 132 is provided on the top surface. A first sub-limiting structure 131 is provided. Correspondingly, the first sub-limiting structure 131 is correspondingly provided on the top surface of the first pultruded plate 111, and forms a clamping connection with the second sub-limiting structure 132 on the bottom surface of the adjacent fourth pultruded plate 1132. Cooperate; the second sub-limiting structure 132 is correspondingly provided on the bottom surface of the second pultruded plate 112 , and forms snap fit with the first sub-limiting structure 131 on the top surface of the adjacent fourth pultruded plate 1132 . Wherein, the number of the fourth pultruded board 1132 may be one as shown in FIG. 9 , and of course, the number of the fourth pultruded board 1132 may also be multiple.

In yet another specific implementation manner, as shown in FIG. 10 , the middle pultruded sheet 113 includes a fifth pultruded sheet 1133 . The top surface and the bottom surface of the fifth pultruded plate 1133 are provided with a first sub-limiting structure 131; correspondingly, the top surface of the first pultruded plate 111 is correspondingly provided with a second sub-limiting structure 132, and It forms a snap fit with the first sub-limiting structure 131 on the bottom surface of the adjacent fifth pultruded plate 1133; the second sub-limiting structure 132 is correspondingly provided on the bottom surface of the second pultruded plate 112, and is connected to the adjacent The first sub-limiting structure 131 on the top surface of the fifth pultrusion plate 1133 forms a snap fit. Wherein, the quantity of the fifth pultruded plate 1133 can be one as shown in Figure 10; The plate 1133 is used in conjunction with other pultruded plates (such as the sixth pultruded plate 1134 shown in the figure) having the second sub-limiting structure 132 .

In yet another specific implementation manner, as shown in FIG. 12 , the middle pultruded sheet 113 includes a sixth pultruded sheet 1134 . The second sub-limiting structure 132 is provided on the top surface and the bottom surface of the sixth pultruded plate 1134; correspondingly, the first sub-limiting structure 131 is correspondingly provided on the top surface of the first pultruded plate 111, and It is clamped and fitted with the second sub-limiting structure 132 on the bottom surface of the adjacent sixth pultruded plate 1134; the bottom surface of the second pultruded plate 112 is correspondingly provided with a first sub-limiting structure 131, and is positioned on the adjacent sixth pultruded plate 1134. The second sub-limiting structure 132 on the top surface of the six pultruded boards 1134 is clamped and fitted. Wherein, the quantity of the sixth pultruded board 1134 can be one as shown in Figure 12; The plate 1134 is used in conjunction with other pultruded plates (such as the fifth pultruded plate 1133 shown in the figure) having the first sub-limiting structure 131 .

The above are several specific implementations of the middle pultrusion plate 113. According to different requirements of the actual height, a corresponding number of middle pultrusion plates 113 can be arranged between the first pultrusion plate 111 and the second pultrusion plate 112 to achieve target height; at the same time, different forms of intermediate pultruded plates 113 can be used according to actual needs. Of course, the middle pultrusion plate 113 can also be arranged in other combinations, which will not be repeated here.

In a further embodiment of the present invention, as shown in FIG. 7 to FIG. 13 , in the blade beam structure 1, a plurality of position-limiting structures 13 in the height direction are aligned in the width direction of the pultruded plate 11, so that The limit structures 13 corresponding to the top surface and the bottom surface of the middle pultruded plate 113 are all located at the same position, and there is only a difference in height; match. The above alignment setting method, whether it is the first sub-limiting structure 131 or the second sub-limiting structure 132, has the same position in the width direction, and there is no need to repeat positioning and other operations during the processing process, which can further reduce the difficulty of processing .

In a further embodiment of the present invention, as shown in FIG. 14 , in the blade beam structure 1, among the plurality of position-limiting structures 13 in the height direction, at least two position-limiting structures 13 are in the width direction of the pultruded plate 11 Upper dislocation setting, for example, the first sub-limiting structure 131 on the top surface of the fifth pultruded plate 1133 in Figure 14 is not at the same width position as the first sub-limiting structure 131 on the bottom surface, and the upper sixth pultruded plate 1134 The second sub-limiting structure 132 on the top surface and the second sub-limiting structure 132 on the bottom surface are also not at the same width position. The above dislocation setting method can avoid processing the limit structure at the same width position on the top surface and the bottom surface of the middle pultruded plate 113, so as to prevent the strength of the pultruded plate from being reduced. Taking Fig. 14 as an example, when the thickness dimension (that is, the dimension in the height direction) of the fifth pultruded sheet 1133 is relatively small, if the second sub-section is processed at the same width position on the top surface and the bottom surface of the fifth pultruded sheet The limiting structure 132 (grooving) will cause the thickness of the fifth pultruded plate 1133 to be greatly reduced at this position, easily lead to a decrease in strength, and may affect the overall system performance of the blade beam structure 1 .

Further, in any of the above-mentioned embodiments, as shown in FIGS. The corners of the bit structure 132) are provided with rounded corners to play a guiding role when pouring cured materials such as resin, which can further improve the pouring efficiency.

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

As shown in Figure 7 and Figure 14, the blade beam structure 1 includes a plurality of pultruded plates 11, in the height direction, a plurality of pultruded plates 11 are stacked, and any adjacent two pultruded plates 11 are provided with The installation gap 12; when the blade beam structure 1 is assembled on the wind power blade, the solidified material such as resin can be poured, so that the cured material is filled in the installation gap 12; the blade beam structure 1 can be used as the main beam of the wind power blade or other beam structures fixed in the wind turbine blade. A limiting structure 13 is provided between any two adjacent pultruded plates 11, and the limiting structure 13 includes a first sub-limiting structure 131 and a second sub-limiting structure 132, which are respectively arranged on two adjacent pultruded plates. 11 on the side of the opposite side. Wherein, the first sub-limiting structure 131 is specifically a groove structure, the second sub-limiting structure 132 is specifically a protruding structure, the protruding structure is adapted to the groove structure, and the protruding structure extends into the groove structure, A one-to-one clamp fit is formed to limit the pultrusion plate 11 in the width direction. Wherein, the protruding structure is integrally formed with the corresponding pultruded board, and the groove structure is also integrally formed with the corresponding pultruded board.

As shown in FIG. 6 , a guide cloth 14 is laid in the installation gap 12 between any two adjacent pultruded plates 11 to play a guiding role when pouring resin and other solidified materials. In addition, the corners of the pultruded board 11 are all provided with rounded corners, so as to guide the cured materials such as resin.

Wherein, among two adjacent pultruded plates 11 , the groove structure is provided on one of the pultruded plates 11 , and the protruding structure is provided on the other pultruded plate 11 . In the width direction of the pultruded sheet 11, the dimension d1 of the groove structure is larger than the dimension d2 of the protrusion structure, and the size difference d1-d2 is in the range of 1mm to 2mm, that is, the width dimension of the groove structure is slightly larger than that of the protrusion The width dimension of the structure is such that a certain gap is maintained between the side walls of the protruding structure and the corresponding side walls in the groove structure, as part of the installation gap 12, so that the installation gap 12 between the two pultruded plates 11 It penetrates in the width direction and passes through the mating surface of the protrusion structure and the groove structure, so that after pouring the cured material such as resin, the cured material can be filled to the mating surface of the protrusion structure and the groove structure.

Wherein, the protrusion structure and the groove structure may adopt different structural forms. As shown in FIGS. 1 to 5 , the cross-sectional shape of the protruding structure includes any one or several of rectangle, trapezoid, triangle, and arc, and the cross-sectional shape of the groove structure matches the protruding structure.

Rounded corners can be set on the corners of the pultruded board 11 (including the corners at both ends, and the corners of the first sub-limiting structure 131 and the second sub-limiting structure 132), so as to be able to play the role of diversion,

The middle pultruded board 113 has many different ways of realization, as shown in Fig. 7 to Fig. A pultruded board 1133 and a sixth pultruded board 1134 . The blade beam structure 1 can adopt only one form of the above-mentioned intermediate pultruded plate 113, and can also adopt a variety of different forms for matching and combining; depending on the specific setting method, the number of the intermediate pultruded plate 113 can be one or more indivual. Among them, between the first pultruded plate 111 and the adjacent intermediate pultruded plate 113, between the second pultruded plate 112 and the adjacent intermediate pultruded plate 113, and between the intermediate pultruded plate 113 and the adjacent intermediate pultruded plate 113 Limiting structures 13 are provided between the plates 113 , and the groove structures and protruding structures of the limiting structures 13 play a limiting role in the width direction. According to different requirements for assembly height, a corresponding number of intermediate pultrusion plates 113 can be provided to achieve the target height.

In addition, as shown in Fig. 7 to Fig. 13, the position-limiting structures 13 that are different in the height direction can be arranged in alignment in the width direction; of course, the position-limiting structures 13 can also be misplaced in the width direction. Way.

In the embodiment of the second aspect of the present invention, a wind turbine blade 2 is also provided. As shown in Figures 1 and 15, the wind power blade 2 includes a blade body 21 and the blade beam structure 1 in any of the above-mentioned embodiments, and the blade beam structure 1 is arranged in the blade body 21 to serve as the main beam of the wind power blade 2 or other Position the beam. After the blade beam structure 1 is assembled on the blade body 21 , the blade beam structure 1 is fixed in the blade body 21 by pouring resin and other curing materials.

Wherein, any two adjacent pultruded plates 11 in the blade beam structure 1 are limited in the width direction by a limiting structure 13, so as to prevent the pultruded plates 11 from being misaligned in the chord direction of the blade body 21, so as to Avoid the resin-rich phenomenon at the edge of the beam, and prevent the mechanical properties of the wind turbine blade 2 from being affected.

In addition, the wind turbine blade 2 in this embodiment also has all the beneficial effects of the blade beam structure 1 in any of the above-mentioned embodiments, which will not be repeated here.

The embodiment of the third aspect of the present invention provides a wind power equipment 3, as shown in Figure 1, Figure 15 and Figure 16, the wind power equipment 3 includes the wind power blade 2 in any of the above-mentioned embodiments, so that The rotation under the wind force realizes wind power generation.

Further, according to specific actual needs, the wind power equipment 3 may also include a host structure, a supporting structure, and the like. The wind power blades 2 are connected with the main engine structure to drive the main engine structure to rotate, thereby realizing power generation; the support structure is used to support the main engine structure, so that the main engine structure is 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 above-mentioned embodiments, which will not be repeated here.

The basic principles of the present invention have been described above in conjunction with specific embodiments, but it should be pointed out that the advantages, advantages, effects, etc. mentioned in the present invention are only examples rather than limitations, and these advantages, advantages, effects, etc. Every embodiment of the invention must have. In addition, the specific details disclosed above are only for the purpose of illustration and understanding, rather than limitation, and the above details do not limit the present invention to be implemented by using the above specific details.

The block diagrams of devices, devices, equipment, and systems involved in the present invention are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, devices, systems may be connected, arranged, configured in any manner. Words such as "including", "comprising", "having" and the like are open-ended words meaning "including but not limited to" and may be used interchangeably therewith. As used herein, the words "or" and "and" refer to the word "and/or" and are used interchangeably therewith, unless the context clearly dictates otherwise. As used herein, the word "such as" refers to the phrase "such as but not limited to" and can be used interchangeably therewith. It should also be pointed out that in the device and equipment of the present invention, each component can be decomposed and/or reassembled. These decompositions and/or recombinations should be considered equivalents 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 forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the 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 of the invention herein.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention .

Claims (13)

1. A blade beam structure, characterized in that, comprising: A plurality of pultruded boards (11) are stacked along the height direction, and an installation gap (12) is provided between any adjacent two of the pultruded boards (11), and the installation gap (12) is suitable for filling cured material; Wherein, a limiting structure (13) is provided between any two adjacent pultrusion plates (11), and the limiting structure (13) includes a first sub-limiting structure (131) and a second sub-limiting structure structure (132), the first sub-limiting structure (131) is set on one of the pultruded plates (11), and the second sub-limiting structure (132) is set on the other pultruded plate (11), the second sub-limiting structure (132) is adapted to the first sub-limiting structure (131), and forms a one-to-one card with the first sub-limiting structure (131) Then cooperate. 2. The blade beam structure according to claim 1, characterized in that, The first sub-limiting structure (131) includes a groove structure; The second sub-limiting structure (132) includes a protruding structure; Wherein, the protruding structure protrudes into the groove structure and forms a snap fit. 3. The blade beam structure according to claim 2, characterized in that, In the width direction of the pultrusion plate (11), the size of the groove structure is larger than the size of the protrusion structure, and the size difference is in the range of 1 mm to 2 mm. 4. The blade beam structure according to claim 2, characterized in that, The cross-sectional shape of the raised structure includes any one or more of rectangle, trapezoid, triangle, and arc; The cross-sectional shape of the groove structure is adapted to the protrusion structure. 5. The blade beam structure according to claim 2, characterized in that, A guide cloth (14) is provided in the installation gap (12) between any two adjacent pultrusion plates (11), and the guide cloth (14) is used to guide the solidified material. 6. The blade beam structure according to claim 1, characterized in that, The first sub-limiting structure (131) and the second sub-limiting structure (132) are integrally formed 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 plates (11) includes a first pultruded plate (111) and a second pultruded plate (112), and the second pultruded plate (112) is located on the first pultruded plate (111) above. 8. The blade beam structure according to any one of claims 1 to 6, characterized in that, The plurality of pultruded sheets (11) includes a first pultruded sheet (111), a second pultruded sheet (112) and at least one intermediate pultruded sheet (113), and the second pultruded sheet (112) is located at Above the first pultruded plate (111), the intermediate pultruded plate (113) is located between the first pultruded plate (111) and the second pultruded plate (112). 9. The blade beam structure according to claim 8, characterized in that, the intermediate pultrusion plate (113) comprises: The third pultruded plate (1131), the first sub-limiting structure (131) is provided on the bottom surface of the third pultruded plate (1131), and the top surface of the third pultruded plate (1131) provided with the second sub-limiting structure (132); and/or The fourth pultruded plate (1132), the second sub-limiting structure (132) is provided on the bottom surface of the fourth pultruded plate (1132), and the top surface of the fourth pultruded plate (1132) provided with the first sub-limiting structure (131); and/or The fifth pultruded plate (1133), the top surface and the bottom surface of the fifth pultruded plate (1133) are provided with the first sub-limiting structure (131); and/or The sixth pultruded plate (1134), the second sub-limiting structure (132) is provided on the top surface and the bottom surface of the sixth pultruded plate (1134). 10. The blade beam structure according to claim 9, characterized in that A plurality of the position-limiting structures (13) are arranged in alignment in the width direction of the pultrusion plate (11). 11. The blade beam structure according to claim 9, characterized in that, At least two of the position-limiting structures (13) are dislocated in the width direction of the pultrusion plate (11). 12. A wind power blade, characterized in that it comprises: blade body; The blade beam structure according to any one of claims 1 to 11, arranged in the blade body. 13. A wind power equipment, characterized in that it comprises: The wind turbine blade according to claim 12.

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