Binding method and wind turbine blade

Abstract

The present invention belongs to the technical field of wind turbine blade manufacturing, and discloses a binding method and a wind turbine blade, the binding method comprising: S100, stacking and assembling a plurality of plates to form a main beam body, the main beam body comprising a plurality of plate column groups, and forming a butt joint between two adjacent plate column groups; S200, positioning the starting end of a binding belt at one end of the top of the main beam body, and winding the ending end of the binding belt to the bottom of the main beam body; S300, passing part of the binding belt through the butt joint from the bottom of the main beam body, and arranging it around the top of the part of the binding belt located at the top of the main beam body; S400, passing the ending end through the butt joint from the top of the main beam body, and passing it to the bottom of the main beam body; S500, repeating S100, S200, S300 and S400, until each butt joint is penetrated by a binding belt; S600, connecting the ending end to the starting end. This binding method can solve the problem of loose plates during transportation or hoisting of the main beam, thereby avoiding the problem of excessive gaps between adjacent chords or misaligned overlap of the same layer.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade manufacturing, and in particular to a binding method and a wind turbine blade. Background Art

[0002] Wind turbine blades are the core components of wind turbines that convert natural wind energy into electricity for wind turbines. The main structural component of wind turbine blades is the main beam. The traditional main beam technology uses a vacuum infusion solution of glass fiber unidirectional cloth. At present, the above solution is gradually being replaced by a main beam design solution of splicing pultruded plates. The main beam is assembled by stacking pultruded plates, which can save the time of repeatedly laying unidirectional cloth and avoid certain infusion risks.

[0003] However, the stacked and assembled main beam may shake or have poor conformability during transportation or when it is hoisted onto the main mold of the wind turbine blade, resulting in excessive chordal gaps between adjacent layers of plates at the root and tip of the main beam or misaligned overlap of the same layer of plates.

[0004] Therefore, there is an urgent need for a binding method and a wind turbine blade to solve the above problems. Summary of the invention

[0005] According to one aspect of the present invention, an object is to provide a binding method, which can solve the problem of loose plates occurring during the transportation or lifting of the main beam, thereby avoiding the problem of excessive gaps in adjacent chord directions or misaligned overlaps in the same layer of the plates in the main beam.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The lashing method comprises the following steps:

[0008] Step S100, stacking and assembling a plurality of plates to form a main beam body, wherein the main beam body includes a plurality of plate column groups, and two adjacent plate column groups are arranged at intervals to form a butt joint;

[0009] Step S200, positioning the starting end of the binding belt at one end of the top of the main beam body, and winding the ending end of the binding belt to the bottom of the main beam body;

[0010] Step S300, passing part of the binding belt through the butt joint from the bottom of the main beam body, and arranging it around the part of the binding belt located on the top of the main beam body;

[0011] Step S400, passing the end end through the butt joint from the top of the main beam body and to the bottom of the main beam body;

[0012] Step S500, repeating step S100, step S200, step S300 and step S400 until each of the butt joints is provided with the binding belt;

[0013] Step S600: Connect the end end to the start end.

[0014] As a preferred embodiment of the binding method provided by the present invention, in step S200, the end end is wrapped to the bottom of the main beam body along a first direction and a second direction in sequence, the first direction is parallel to the arrangement direction of the multiple groups of plate columns, and the second direction is parallel to the arrangement direction of the multiple plates in each group of the plate columns.

[0015] As a preferred solution of the binding method provided by the present invention, in step S200, the starting end of the binding belt extends out of the side of the main beam body.

[0016] As a preferred solution of the binding method provided by the present invention, the length of the binding belt is greater than the circumference of the cross section of the main beam body parallel to the second direction.

[0017] As a preferred solution of the binding method provided by the present invention, in step S600, the ending end and the starting end are fixedly connected.

[0018] As a preferred solution of the binding method provided by the present invention, between step S500 and step S600, the following steps are also included:

[0019] The relative position of the end end and the start end of the binding belt is adjusted, thereby adjusting the width and shape of the joint.

[0020] As a preferred solution of the binding method provided by the present invention, the binding belt is a fiber yarn bundle.

[0021] As a preferred solution of the binding method provided by the present invention, in step S100, step S200, step S300, step S400 and step S500, a hook is used to pull the binding belt.

[0022] As a preferred solution of the binding method provided by the present invention, in step S100, an interlayer guide cloth is sandwiched between every two adjacent layers of the plate materials.

[0023] According to another aspect of the present invention, an object is to provide a wind turbine blade having a strong structural stability and capable of avoiding the loosening of panels during hoisting or transportation.

[0024] To achieve this object, the present invention adopts the following technical solutions:

[0025] A wind turbine blade, wherein the main beam body of the wind turbine blade is assembled by using the binding method described in any of the above schemes.

[0026] Beneficial effects of the present invention:

[0027] The binding method provided by the present invention preliminarily forms a main beam body and a butt joint by stacking the plates, and the butt joint can provide a space for the binding belt to pass through. By positioning the starting end of the binding belt at one end of the top of the main beam body, a connection foundation is provided for the ending end of the binding belt after the binding is completed, and the starting end can be connected to the ending end of the binding belt after the binding is completed. Through steps S300 and S400, a part of the binding belt is used to wrap a plate column group to ensure the binding stability of each plate column group. Through the operation of step S500, each group of plate columns is wrapped and positioned in the same step, so that the entire main beam body forms a whole. The assembly of the entire main beam body is achieved through step S600. The binding method can solve the problem of loose plates occurring during the transportation or hoisting of the main beam, thereby avoiding the problem of adjacent chord gaps exceeding the tolerance or misaligned overlap of the same layer of plates in the main beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 is a flowchart of the steps of the binding method provided by an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of step S300 of the binding method provided by an embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of completing step S300 of the binding method provided by an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of completing step S400 of the binding method provided by an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of completing step S600 of the binding method provided by an embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of a crochet hook provided by an embodiment of the present invention.

[0035] In the figure:

[0036] 1. Plate; 2. Butt seam; 3. Binding tape; 31. Starting end; 32. Ending end; 4. Hook; 41. Hooking part; 42. Elastic part; 5. Interlayer guide cloth. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", "left" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] This embodiment provides a binding method and a wind turbine blade. The main beam body of the wind turbine blade is assembled using the binding method provided in this embodiment.

[0043] Figure 1 A flowchart showing the steps of the binding method provided by an embodiment of the present invention is shown; Figure 2 A schematic diagram showing step S300 of the binding method provided by an embodiment of the present invention; Figure 3 A schematic diagram showing the completion of step S300 of the binding method provided by an embodiment of the present invention; Figure 4 A schematic diagram showing the completion of step S400 of the binding method provided by an embodiment of the present invention; Figure 5 FIG. 1 is a schematic diagram showing the completion of step S600 of the binding method provided by an embodiment of the present invention. Figure 1-Figure 5 The binding method specifically comprises the following steps:

[0044] Step S100, stacking and assembling a plurality of plates 1 to form a main beam body, wherein the main beam body comprises a plurality of groups of plate columns, and two adjacent groups of plate columns are arranged at intervals to form a butt joint 2;

[0045] Step S200, positioning the starting end 31 of the binding belt 3 at one end of the top of the main beam body, and winding the ending end 32 of the binding belt 3 to the bottom of the main beam body;

[0046] Step S300, passing a portion of the binding belt 3 through the butt joint 2 from the bottom of the main beam body, and arranging around the top of the portion of the binding belt 3 located at the top of the main beam body;

[0047] Step S400, inserting the end 32 from the top of the main beam body through the butt joint 2 and extending to the bottom of the main beam body;

[0048] Step S500, repeating step S100, step S200, step S300 and step S400 until each of the butt joints 2 is penetrated with the binding belt 3;

[0049] Step S600 , fixedly connecting the end end 32 to the start end 31 .

[0050] Specifically, in step S100, an interlayer guide cloth 5 is sandwiched between each two adjacent layers of the plate 1. The interlayer guide cloth 5 is tightly sandwiched between the two adjacent layers of the plate 1, and can also be connected between the two adjacent layers of the plate 1 by bonding. Through step S100, multiple plates 1 are reasonably stacked and the interlayer guide cloth 5 is arranged between the two adjacent layers of the plate 1, and the main beam body is initially formed, and the butt joint 2 is formed.

[0051] Specifically, in step S200, the end 32 is wound to the bottom of the main beam body along the first direction and the second direction in sequence. The first direction is parallel to the arrangement direction of the plurality of plate arrays, and the second direction is parallel to the arrangement direction of the plurality of plates 1 in each plate array. Figure 2 Through the above step S200, the starting end of the binding belt 3 is positioned at one end of the top of the main beam body, and the starting end 31 can fix the ending end 32 of the binding belt 3 after the binding is completed.

[0052] In this embodiment, the length of the binding belt 3 is greater than the circumference of the cross section of the main beam body parallel to the second direction, which is convenient for wrapping and binding the main beam body with the binding belt 3. And the starting end 31 of the binding belt 3 extends out of the side of the main beam body, which is convenient for connecting the ending end 32 with the starting end 31. Specifically, the binding belt 3 is preferably a glass fiber yarn bundle. Glass fiber is an inorganic non-metallic material with excellent performance and a wide variety. It has the characteristics of good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, which can ensure the reliability of binding the main beam body. In other embodiments, the binding belt can also be made of other materials, and any yarn bundle that can achieve a reliable binding function can be used.

[0053] Through step S300 and step S400, a panel array is wrapped with a portion of the binding belt 3. Through step S500, step S100, step S200, step S300 and step S400 are repeated until each of the butt joints 2 is penetrated with the binding belt 3. Through the above operations, each panel array is wrapped and positioned.

[0054] Preferably, between step S500 and step S600, the following step is further included: adjusting the relative position of the end end 32 and the start end 31 of the binding belt 3, thereby adjusting the width and shape of the butt joint 2. Specifically, by manually pulling the end end 32 and the start end 31, the width and shape of the butt joint 2 between two adjacent groups of plate columns meet the design requirements, thereby preventing the problem of excessive gaps in adjacent chord directions or misaligned overlaps in the same layer of multiple plates 1.

[0055] Optionally, in step S600, the end end 32 and the start end 31 are preferably fixedly connected by knotting. The end end 32 is fixedly connected to the start end 31, so that the assembly of the entire main beam body can be achieved. The fixed connection method of the end end 32 and the start end 31 is not limited to knotting, and can also be fixed by bonding or other methods, which is not limited in this embodiment.

[0056] Optional reference Figure 2-Figure 4In step S100, step S200, step S300, step S400 and step S500, the hook needle 4 is used to pull the binding belt 3. A part of the hook needle 4 can pass smoothly in the butt joint 2, so as to drive the binding belt 3 to pass through the butt joint 2.

[0057] Figure 6 The schematic diagram of the structure of the crochet hook provided by the embodiment of the present invention is shown. Figure 6 The hook needle 4 includes a handle and a head. The front end of the handle is integrally formed with an action portion, the diameter of the action portion is smaller than the width of the butt joint 2, and the length of the action portion is greater than the depth of the butt joint 2. Through the above arrangement, it is convenient to drive the binding belt 3 to pass through the butt joint 2 smoothly.

[0058] Specifically, the end of the action portion is a head, and the head includes a hook portion 41 and an elastic portion 42. The hook portion 41 is an arc-shaped structure, configured to hook the binding belt 3, and the elastic portion 42 can open or close the opening of the hook portion 41. When the elastic portion 42 is elastically opened, the hook portion 41 can be hooked on the binding belt 3 from the peripheral side of the binding belt 3, and at this time, the elastic portion 42 is elastically closed to prevent the binding belt 3 from slipping off from the opening of the hook portion 41.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tying method, characterized in that: include: S100, stacking and assembling a plurality of plates (1) to form a main beam body, wherein the main beam body comprises a plurality of groups of plate columns, two adjacent groups of the plate columns are arranged at intervals to form a butt joint (2), and an interlayer guide cloth (5) is sandwiched between each two adjacent layers of the plates (1); S200, positioning the starting end (31) of the binding belt (3) at one end of the top of the main beam body, and winding the ending end (32) of the binding belt (3) to the bottom of the main beam body; S300, passing part of the binding belt (3) through the butt joint (2) from the bottom of the main beam body, and laying around the part of the binding belt (3) located on the top of the main beam body; S400, passing the end end (32) through the butt joint (2) from the top of the main beam body and extending to the bottom of the main beam body; S500, repeating step S100, step S200, step S300 and step S400 until each of the butt joints (2) is provided with the binding belt (3); S600, connecting the end end (32) to the start end (31).

2. The tying method according to claim 1, characterized in that: In step S200, the end end (32) is wound to the bottom of the main beam body along a first direction and a second direction in sequence, the first direction being parallel to the arrangement direction of the plurality of plate arrays, and the second direction being parallel to the arrangement direction of the plurality of plates (1) in each of the plate arrays.

3. The tying method according to claim 1, characterized in that: In step S200, the starting end (31) of the binding belt (3) extends out of the side of the main beam body.

4. The tying method according to claim 1, characterized in that: The length of the binding belt (3) is greater than the circumference of a cross section of the main beam body parallel to the second direction.

5. The tying method according to claim 1, characterized in that: In step S600, the end end (32) and the start end (31) are fixedly connected.

6. The tying method according to any one of claims 1 to 5, characterized in that: Between step S500 and step S600, the following steps are also included: The relative positions of the end end (32) and the start end (31) of the binding belt (3) are adjusted, thereby adjusting the width and shape of the butt joint (2).

7. The tying method according to any one of claims 1 to 5, characterized in that: The binding belt (3) is a fiber yarn bundle.

8. The tying method according to any one of claims 1 to 5, characterized in that: In step S100, step S200, step S300, step S400 and step S500, a hook needle (4) is used to pull the binding belt (3).

9. A wind turbine blade, characterized in that: The main beam body of the wind turbine blade is assembled using the binding method described in any one of claims 1-8.

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