Wind power blade structure with segmented tail edge and method

Abstract

The invention discloses a wind power blade structure with a segmented tail edge and a method, solves the problem that in the prior art, the width of a wind power blade cannot be increased due to transportation limitation, and has the beneficial effect that on the premise that the strength is guaranteed, segmented transportation can be achieved so that the width of the blade can be increased. Comprising a blade body and a blade trailing edge which are arranged in the chord direction of the blade, the blade body is provided with a first notch, the blade body is provided with a first trailing edge beam in the length direction of the blade body, the first trailing edge beam passes through the first notch, and a first web is arranged at the first notch of the blade body in the thickness direction of the blade body and supports the first trailing edge beam; a second notch is formed in one side of the blade rear edge, the shape of the second notch is matched with that of the first notch, a second rear edge beam is arranged in the length direction of the blade rear edge and passes through the second notch, and the first rear edge beam and the second rear edge beam can be bonded into a whole.

Description

Technical Field

[0001] The invention relates to the field of wind turbine blade design, and in particular to a wind turbine blade structure with segmented trailing edges and a method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Wind energy has become one of the most promising new energy sources due to its excellent characteristics of green energy, and has been widely used and vigorously developed. As one of the most core components of wind turbines, the design quality, power generation performance and theoretical compliance of wind turbine blades are the prerequisites for the stable and efficient operation of the units. With the large-scale power level of wind turbines, longer and larger blades are also needed to achieve the purpose of low wind speed starting and high power generation capacity by increasing the swept area.

[0004] However, the large-scale blades not only put forward higher requirements on structural design and processing quality, but also bring troubles to conventional transportation due to the increase in their external dimensions, because transportation has requirements on the width of the blades, usually around 5m, which limits the width of the blades. Existing conventional blades are manufactured by segmenting the upper and lower shells and bonding them together as a whole. However, due to operating loads and processing and manufacturing reasons, cracking in the trailing edge area has always been one of the important factors affecting the normal operation of wind turbine blades. At the same time, with the large-scale blades, not only the length of the blades is increasing, but also the maximum chord length is gradually increasing; that is to say, the development requires larger blades, but the existing blades cannot be designed larger due to transportation constraints, and the existing segmented manufacturing scheme is prone to blade cracking.

[0005] The prior art discloses a trailing edge segmentation technology, which uses structural adhesive and bolt connection to fix the trailing edge, which increases the additional bolt connection cost, easily generates additional weight, and causes waste of design cost and cycle; at the same time, the trailing edge is processed by a full negative mold, which is not conducive to the processing and preparation of the trailing edge of a large-scale rear blade, and increases the production difficulty and the probability of defects. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a wind turbine blade structure with a segmented trailing edge. By arranging the blade body and the blade trailing edge in segments, the two can be transported separately, thereby realizing a wind turbine blade structure with a larger width.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] A wind turbine blade structure with a segmented trailing edge comprises a blade body and a blade trailing edge arranged along the chord direction of the blade, a first notch being arranged on the blade body, a first trailing edge beam being arranged along the length direction of the blade body, the first trailing edge beam being arranged through the first notch, a first web being arranged on the blade body along the thickness direction of the blade body at the first notch, the first web supporting the first trailing edge beam, a second notch being arranged on one side of the blade trailing edge, the shape of the second notch being matched with the shape of the first notch, a second trailing edge beam being arranged along the length direction of the blade trailing edge, the second trailing edge beam being arranged through the second notch, the first trailing edge beam and the second trailing edge beam being bonded together, and the end side of the first web extending beyond the first trailing edge beam can also support the second trailing edge beam.

[0009] As described above, the wind turbine blade structure has a blade body and a blade trailing edge arranged in the chord direction of the blade, a first notch arranged in the blade body, and a second notch arranged at the blade trailing edge corresponding to the position of the first notch. In this way, the wind turbine blade structure is divided into two sections in the chord direction of the blade, that is, in the width direction of the blade. The two sections can be transported separately, thereby widening the width of the blade body while meeting the transportation conditions, thereby meeting the demand for larger and wider wind turbine blades.

[0010] In a wind turbine blade structure with a segmented trailing edge as described above, flange plates are respectively arranged at both ends of the first web, one side of the flange plate is bonded to the blade body, the side of the flange plate bonded to the blade body is located on the side of the first trailing edge beam, the other side of the flange plate can be bonded to the trailing edge of the blade, and the side of the flange plate bonded to the trailing edge of the blade is located on the side of the second trailing edge beam.

[0011] In the above-mentioned wind turbine blade structure with segmented trailing edge, the contact area between the flange plate and the blade body is greater than the contact area between the flange plate and the trailing edge of the blade;

[0012] Considering that the first trailing edge beam is wrapped inside the main body inner skin and the second trailing edge beam is wrapped inside the trailing edge inner skin, the flange plate is bonded to the main body inner skin at the blade body, and the flange plate can be bonded to the trailing edge inner skin of the blade trailing edge.

[0013] In a wind turbine blade structure with a trailing edge segment as described above, the longitudinal cross-sections of the first trailing edge beam and the second trailing edge beam are both parallelograms to increase the bonding area of ​​the first trailing edge beam and the second trailing edge beam, and the contact surface between the first trailing edge beam and the blade body is an inclined surface to ensure the bonding strength between the first trailing edge beam and the second trailing edge beam.

[0014] In the above-mentioned wind turbine blade structure with segmented trailing edge, the first trailing edge beam and the second trailing edge beam are bonded by structural adhesive;

[0015] The outer side of the first trailing edge beam is covered by the main body outer skin, and the outer side of the second trailing edge beam is covered by the trailing edge outer skin. The main body outer skin and the trailing edge outer skin are bonded by structural adhesive.

[0016] In the above-mentioned wind turbine blade structure with segmented trailing edge, a reinforcing component is arranged outside the bonding point between the first trailing edge beam and the second trailing edge beam to strengthen the connection effect between the first trailing edge beam and the second trailing edge beam;

[0017] The reinforcing component is arranged in a circle around the circumference of the first notch, and the width of the reinforcing component is less than or equal to the sum of the widths of the first trailing edge beam and the second trailing edge beam.

[0018] In the above-mentioned wind turbine blade structure with segmented trailing edge, considering the manufacturing problem, the blade body includes a blade leading edge and a main body component, the blade leading edge is arc-shaped, and both ends of the blade leading edge are respectively connected to the corresponding main body component through main beams.

[0019] In a wind turbine blade structure with a segmented trailing edge as described above, a second web is arranged between the main beams at both ends of the leading edge of the blade, the second web is arranged parallel to the first web, the second web is arranged along the length direction of the blade body, there are two second webs, and a distance is set between two adjacent second webs. By arranging two or more second webs, the strength of the blade body is effectively enhanced, thereby ensuring the strength and service life of the wider blade body.

[0020] In a second aspect, the present invention further provides a method for manufacturing a wind turbine blade structure with a segmented trailing edge, comprising the following contents:

[0021] Making the blade body and the blade trailing edge;

[0022] During the manufacturing process of the blade body, a first notch is provided on a side of the blade body facing the trailing edge, a first trailing edge beam is provided in the blade body, the first trailing edge beam is provided through the first notch, a first web is provided at the first notch along the thickness direction of the blade body, and the first web supports the first trailing edge beam;

[0023] During the manufacturing process of the blade trailing edge, a second notch is provided on a side of the blade trailing edge facing the blade body, a second trailing edge beam is provided in the blade trailing edge, and the second trailing edge beam is provided through the second notch;

[0024] The first trailing edge beam is bonded to the second trailing edge beam, and the second trailing edge beam is supported by the first web, so that the blade body and the blade trailing edge are bonded as one.

[0025] The manufacturing method of the wind turbine blade structure with segmented trailing edge as described above, the manufacturing method of the trailing edge of the blade comprises the following contents:

[0026] Fix the trailing edge pressure surface mold and the trailing edge suction surface mold,

[0027] The trailing edge of the blade is made by using a trailing edge pressure surface mold and a trailing edge suction surface mold, so that the trailing edge of the blade is formed in one piece, reducing the risk of cracking of the trailing edge of the blade.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1) The wind turbine blade structure provided in the present invention has a reasonable structural arrangement. A blade body and a blade trailing edge are arranged in the chord direction of the blade. A first notch is arranged in the blade body, and a second notch corresponding to the position of the first notch is arranged at the blade trailing edge. In this way, the wind turbine blade structure is divided into two sections in the chord direction of the blade, that is, in the width direction of the blade. The two sections can be transported separately. Therefore, the width of the blade body can be widened while meeting the transportation conditions, meeting the demand for larger and wider wind turbine blades. The overall structural strength can be improved while reducing the difficulty of processing, manufacturing and product transportation.

[0030] 2) In the present invention, a first trailing edge beam is arranged along the length direction of the blade body, and a second trailing edge beam is arranged along the length direction of the blade trailing edge. The first trailing edge beam is arranged through the first notch, and the second trailing edge beam is arranged through the second notch. The first web supports the first trailing edge beam, which not only ensures the strength of the blade body at the first notch, but also when the blade body is connected with the blade trailing edge, the first web can also support the second trailing edge beam, thereby effectively enhancing the reliability of the connection between the blade body and the blade trailing edge.

[0031] 3) The present invention arranges flange plates at both ends of the first web, one side of the flange plate can support the first trailing edge beam, and the other side can support the second trailing edge beam. In this way, during the transportation of the blade body, the first web supports the blade body through one side of the flange plate. When the blade body and the blade trailing edge need to be connected, the first web is bonded to the trailing edge inner skin at the second trailing edge beam through one side of the flange plate to support the blade trailing edge.

[0032] 4) In the present invention, the longitudinal cross-section of the first trailing edge beam is a parallelogram, and the cross-section of the second trailing edge beam is also a parallelogram, thereby increasing the bonding area between the first trailing edge beam and the second trailing edge beam in the blade body, ensuring the bonding strength between the first trailing edge beam and the second trailing edge beam, and reducing the problem of cracks occurring at the connection between the two during the use of the wind turbine blade structure.

[0033] 5) In the present invention, a reinforcing component is arranged outside the bonding point between the first trailing edge beam and the second trailing edge beam, and the reinforcing component further strengthens the connection effect between the first trailing edge beam and the second trailing edge beam.

[0034] 6) The blade body in the present invention includes a blade leading edge and a main body component. A second web is arranged between the blade leading edge and the main body component. The number of the second webs can be set to two or more, which effectively enhances the strength of the blade body and ensures the strength and service life of the wider blade body.

[0035] 7) The manufacturing method of the wind turbine blade structure in the present invention realizes the separate manufacturing of the blade body and the blade trailing edge. After the manufacturing is completed, the first web is bonded to the blade trailing edge, and the first trailing edge beam is bonded to the second trailing edge beam. Under the premise of ensuring the width of the blade body, the connection strength between the blade body and the blade trailing edge is guaranteed; and the blade trailing edge is an integrally formed part, so as to avoid gluing and fixing of the blade trailing edge and reduce the risk of cracking of the blade trailing edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0037] Figure 1 It is a schematic diagram of a segmented wind turbine blade structure with a trailing edge segment according to one or more embodiments of the present invention.

[0038] Figure 2 It is a schematic longitudinal cross-sectional view of a wind turbine blade structure with a trailing edge segment according to one or more embodiments of the present invention.

[0039] Figure 3 It is an enlarged schematic diagram of the connection between the blade body and the blade trailing edge in a wind turbine blade structure with a trailing edge segment according to one or more embodiments of the present invention.

[0040] Figure 4 It is a schematic diagram of a blade trailing edge mold in a wind turbine blade structure with a trailing edge segment according to one or more embodiments of the present invention.

[0041] Figure 5 It is a longitudinal cross-sectional schematic diagram of a blade trailing edge mold in a wind turbine blade structure with a trailing edge segment according to one or more embodiments of the present invention.

[0042] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0043] Among them: 1. Blade body, 2. Blade trailing edge, 3. Structural adhesive, 4. Reinforcement components;

[0044] 11. Second web, 12. First web, 13. Main beam, 14. Main body, 15. Main body outer skin, 16. Main body inner skin, 17. First trailing edge beam, 18. Second trailing edge beam, 19. Blade leading edge;

[0045] 121. Flange plate;

[0046] 51. Inner surface of the trailing edge suction surface, 52. Outer surface of the trailing edge pressure surface;

[0047] 61. Surface layer of the mold for the trailing edge suction surface, 62. The second steel structure skeleton, 63. The fixing component, 64. Surface layer of the mold for the trailing edge pressure surface, 65. The first steel structure skeleton. DETAILED DESCRIPTION

[0048] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0050] As introduced in the background technology, in the prior art, the width of wind turbine blades cannot be wider due to transportation restrictions. In order to solve the above technical problem, the present invention proposes a wind turbine blade structure with a segmented trailing edge.

[0051] Embodiment 1

[0052] In a typical embodiment of the present invention, reference is made to Figure 1 , Figure 2 As shown, a wind turbine blade structure with a segmented trailing edge comprises a blade body 1 and a blade trailing edge 2 arranged along the chord direction of the blade, the blade body 1 is provided with a first notch, a first trailing edge beam 17 is provided along the length direction of the blade body, the first trailing edge beam is arranged through the first notch, the blade body has a first web along the thickness direction of the blade body at the first notch, the first web supports the first trailing edge beam, a second notch is provided on one side of the blade trailing edge 2, the shape of the second notch matches the shape of the first notch, a second trailing edge beam is provided along the length direction of the blade trailing edge, the second trailing edge beam is arranged through the second notch, the first trailing edge beam and the second trailing edge beam can be bonded together, and the first web 12 exceeds the first trailing edge beam and can also support the second trailing edge beam 18.

[0053] refer to Figure 3 As shown, flange plates 121 are respectively provided at both ends of the first web 12, and the flange plates at both ends form an I-shaped component with the first web 12. Considering that the blade body and the blade trailing edge are arranged in an arc shape at the first web, the flange plate 121 is inclined relative to the first web, and one side of the flange plate is bonded to the blade body, and the side of the flange plate bonded to the blade body is located on the side of the first trailing edge beam, and the other side of the flange plate can be bonded to the blade trailing edge, and the side of the flange plate bonded to the blade trailing edge is located on the side of the second trailing edge beam.

[0054] Considering that the first trailing edge beam is wrapped inside the main body inner skin 16, the second trailing edge beam is wrapped inside the trailing edge inner skin, the flange plate is bonded to the main body inner skin at the blade body, and the flange plate can be bonded to the trailing edge inner skin of the blade trailing edge.

[0055] It should be noted that the width of the first trailing edge beam varies with the width of the blade body, and the length of the first trailing edge beam is greater than or equal to the length of the blade body at the first notch. The width of the second trailing edge beam varies with the width of the blade trailing edge, and the length of the second trailing edge beam is less than or equal to the length of the blade trailing edge at the second notch.

[0056] In addition, the longitudinal cross-sections of the first trailing edge beam and the second trailing edge beam are both parallelograms to increase the bonding area of ​​the first trailing edge beam and the second trailing edge beam. The contact surface between the first trailing edge beam and the blade body is an inclined surface, and the contact surface between the second trailing edge beam and the blade trailing edge is also an inclined surface. In this way, the longitudinal cross-sections of the first trailing edge beam and the second trailing edge beam after bonding are also a parallelogram, ensuring the bonding strength between the first trailing edge beam and the second trailing edge beam, and further ensuring the bonding strength between the blade body and the blade trailing edge.

[0057] Specifically, the first trailing edge beam and the second trailing edge beam are bonded by means of structural adhesive 3, and the flange plate and the main body inner skin 16 and the trailing edge inner skin are also bonded by means of structural adhesive, and the structural adhesive is an existing epoxy resin adhesive used for bonding rigid parts;

[0058] It can be understood that, since the cross section of the first trailing edge beam is a parallelogram, considering that the first web mainly supports the blade body, the contact area between the flange plate and the blade body is greater than the contact area between the flange plate and the blade trailing edge;

[0059] In addition, the outer side of the first trailing edge beam is covered by the main body outer skin 15, and the outer side of the second trailing edge beam is covered by the trailing edge outer skin. When the first trailing edge beam and the second trailing edge beam are bonded, the main body outer skin and the trailing edge outer skin are bonded by structural adhesive.

[0060] A reinforcing component 4 is arranged outside the bonding point between the first trailing edge beam and the second trailing edge beam to strengthen the connection effect between the first trailing edge beam and the second trailing edge beam, thereby ensuring the integrity of the blade body and the blade trailing edge;

[0061] Specifically, the reinforcing component 4 is arranged in a circle around the circumference of the first notch, and the width of the reinforcing component is less than or equal to the sum of the widths of the first trailing edge beam and the second trailing edge beam. The reinforcing component can be a hand-laid reinforcing component by the staff, specifically using glass fiber cloth, and the glass fiber cloth is wrapped around the connection between the blade body and the trailing edge of the blade through thermosetting resin.

[0062] Considering the manufacturing problem, refer to Figure 2As shown, the blade body 1 includes a blade leading edge 19 and a main body part 14. The blade leading edge is arc-shaped, and both ends of the blade leading edge are respectively connected to the corresponding main body parts through main beams. The main beam 13 has a set width, the width of the main beam is smaller than the width of the main body part, and the length of the main beam is less than or equal to the length of the blade body.

[0063] In this embodiment, a second web 11 is arranged between the main beams at both ends of the leading edge of the blade. The second web is arranged parallel to the first web. The second web is arranged along the length direction and thickness direction of the blade body. The number of second webs is generally two, and the interval between two adjacent second webs is set, which effectively enhances the strength of the blade body and ensures the strength and service life of the wider blade body. The number of second webs can be increased or decreased according to the structural strength design.

[0064] The wind turbine blade structure provided in the present embodiment is provided with a blade body and a blade trailing edge in the chord direction of the blade, a first notch is provided in the blade body, and a second notch corresponding to the position of the first notch is provided at the blade trailing edge. In this way, the wind turbine blade structure is divided into two sections in the chord direction of the blade, that is, the width direction of the blade, and the two sections can be transported separately, thereby widening the width of the blade body while meeting the transportation conditions, and meeting the demand for larger and wider wind turbine blades. A flange plate is provided at the end of the first web, and one side of the flange plate is pre-glued and fixed to the blade body to form a whole. After the blade body is transported to a workshop near the wind farm, the blade trailing edge is bonded to the other side of the flange plate, and the second trailing edge beam is fixed to the first trailing edge beam by gluing, and reinforcement components are provided at the bonding point between the blade body and the blade trailing edge to form a blade as a whole. It has good structural strength and can effectively reduce transportation restrictions.

[0065] Embodiment 2

[0066] This embodiment provides a method for manufacturing a wind turbine blade structure with a segmented trailing edge, including the following contents:

[0067] Manufacturing a blade body 1 and a blade trailing edge 2;

[0068] During the manufacturing process of the blade body 1, a first notch is provided on a side facing the trailing edge of the blade, a first trailing edge beam is provided in the blade body, the first trailing edge beam is provided through the first notch, a first web is provided at the first notch along the thickness direction of the blade body, both sides of the first trailing edge beam are covered by the main body outer skin and the main body inner skin, and the main body inner skin is bonded to the first web at the side of the first trailing edge beam 17;

[0069] The blade body 1 is provided with a main beam connecting the blade leading edge 19 and the main body component 14, and the main beam 13 is fixed to the second web 11 by means of structural adhesive; and the blade leading edge 19 includes a leading edge suction surface and a leading edge pressure surface, which are fixed by means of structural adhesive;

[0070] During the manufacturing process of the blade trailing edge, a second notch is provided on the side facing the blade body 1, and a second trailing edge beam is provided in the blade trailing edge. The second trailing edge beam 18 is provided through the second notch, so that the blade trailing edge forms an integral sandwich hollow structure without the need for additional gluing; the second trailing edge beam is covered by the trailing edge outer skin and the trailing edge inner skin;

[0071] The inner side of the second trailing edge beam of the trailing edge inner skin is bonded to the second web by structural adhesive, and the first trailing edge beam is bonded to the second trailing edge beam by structural adhesive, and the second trailing edge beam is supported by the first web, so that the blade body and the blade trailing edge are bonded as one.

[0072] The method for manufacturing the trailing edge of the blade includes the following contents:

[0073] refer to Figure 4 and Figure 5 As shown, because the curved surface of the blade trailing edge pressure surface (PS surface) changes greatly and the curved surface of the suction surface (SS surface) changes relatively gently, the trailing edge pressure surface outer surface 52 and the trailing edge suction surface inner surface 51 are used as the surfaces of the corresponding molds to manufacture the trailing edge pressure surface mold surface layer 64 in the trailing edge pressure surface mold and the trailing edge suction surface mold surface layer 61 in the trailing edge suction surface mold, and the trailing edge pressure surface mold is fixed by the first steel structure skeleton 65, and the trailing edge suction surface mold is fixed by the second steel structure skeleton 62;

[0074] The trailing edge pressure surface mold and the trailing edge suction surface mold can be fixed by a fixing component, a fixing component 63 is arranged between the side of the first steel structure frame and the inner side of the second steel structure frame, and the fixing component 63 can be a connecting plate, and the fastener connects the first steel structure frame and the second steel structure frame;

[0075] The trailing edge pressure surface mold and the trailing edge suction surface mold are used to make the trailing edge of the blade. Specifically, the trailing edge material of the blade on the trailing edge pressure surface side is laid first, and the trailing edge material of the blade on the suction surface is reserved. After the trailing edge mold is fixed, the remaining trailing edge material of the blade is laid.

[0076] First remove the trailing edge suction surface mold, separate the blade trailing edge from the trailing edge suction surface mold, and then remove the blade trailing edge from the trailing edge pressure surface mold, so that the blade trailing edge is formed in one piece, reducing the risk of cracking of the blade trailing edge.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind turbine blade structure with segmented trailing edge, characterized in that: It includes a blade body and a blade trailing edge arranged along the chord direction of the blade, a first notch is arranged on the blade body, a first trailing edge beam is arranged along the length direction of the blade body, the first trailing edge beam is arranged through the first notch, a first web is provided on the blade body along the thickness direction of the blade body at the first notch, the first web supports the first trailing edge beam, a second notch is arranged on one side of the blade trailing edge, the shape of the second notch is adapted to the shape of the first notch, a second trailing edge beam is arranged along the length direction of the blade trailing edge, the second trailing edge beam is arranged through the second notch, the first trailing edge beam and the second trailing edge beam can be bonded together, and the end side of the first web exceeds the first trailing edge beam and can also support the second trailing edge beam.

2. The wind turbine blade structure with a segmented trailing edge according to claim 1, characterized in that: Flange plates are respectively arranged at both ends of the first web, one side of the flange plate is bonded to the blade body, the side of the flange plate bonded to the blade body is located on the side of the first trailing edge beam, the other side of the flange plate can be bonded to the blade trailing edge, and the side of the flange plate bonded to the blade trailing edge is located on the side of the second trailing edge beam.

3. The wind turbine blade structure with a segmented trailing edge according to claim 2, characterized in that: The contact area between the flange plate and the blade body is greater than the contact area between the flange plate and the blade trailing edge; One side of the flange plate is bonded to the main body inner skin at the blade body, and the other side of the flange plate can be bonded to the trailing edge inner skin of the trailing edge of the blade.

4. The wind turbine blade structure with a segmented trailing edge according to claim 1, characterized in that: The longitudinal cross-sections of the first trailing edge beam and the second trailing edge beam are both parallelograms to increase the bonding area of ​​the first trailing edge beam and the second trailing edge beam.

5. The wind turbine blade structure with a segmented trailing edge according to claim 1, characterized in that: The first trailing edge beam and the second trailing edge beam are bonded by structural adhesive; The outer side of the first trailing edge beam is covered by the main body outer skin, and the outer side of the second trailing edge beam is covered by the trailing edge outer skin. The main body outer skin and the trailing edge outer skin are bonded by structural adhesive.

6. The wind turbine blade structure with a segmented trailing edge according to claim 1, characterized in that: A reinforcing component is arranged on the outer side of the bonding point between the first trailing edge beam and the second trailing edge beam; The reinforcing component is arranged in a circle around the circumference of the first notch, and the width of the reinforcing component is less than or equal to the sum of the widths of the first trailing edge beam and the second trailing edge beam.

7. The wind turbine blade structure with a segmented trailing edge according to claim 1, characterized in that: The blade body comprises a blade leading edge and a main body component. The blade leading edge is arc-shaped, and both ends of the blade leading edge are respectively connected to the corresponding main body component through a main beam.

8. The wind turbine blade structure with a segmented trailing edge according to claim 7, characterized in that: A second web is arranged between the main beams at both ends of the leading edge of the blade. The second web is arranged parallel to the first web. The second web is arranged along the length direction of the blade body. There are two second webs, and a distance is set between two adjacent second webs.

9. A method for manufacturing a wind turbine blade structure with a trailing edge segment according to any one of claims 1 to 8, characterized in that: It includes the following: Making the blade body and the blade trailing edge; During the manufacturing process of the blade body, a first notch is provided on a side of the blade body facing the trailing edge, a first trailing edge beam is provided in the blade body, the first trailing edge beam is provided through the first notch, a first web is provided at the first notch along the thickness direction of the blade body, and the first web supports the first trailing edge beam; During the manufacturing process of the blade trailing edge, a second notch is provided on a side of the blade trailing edge facing the blade body, a second trailing edge beam is provided in the blade trailing edge, and the second trailing edge beam is provided through the second notch; The first trailing edge beam is bonded to the second trailing edge beam, and the second trailing edge beam is supported by the first web, so that the blade body and the blade trailing edge are bonded as one.

10. The method for manufacturing a wind turbine blade structure with a segmented trailing edge according to claim 9, characterized in that: The method for manufacturing the trailing edge of the blade comprises the following contents: The outer surface of the blade trailing edge pressure surface and the inner surface of the blade trailing edge suction surface are used as the surfaces of the trailing edge pressure surface mold and the trailing edge suction surface mold to manufacture the trailing edge pressure surface mold and the trailing edge suction surface mold; First, the blade trailing edge material on the trailing edge pressure surface side is laid through the blade trailing edge pressure surface mold, and the blade trailing edge material on the suction surface is reserved, and the trailing edge pressure surface mold and the trailing edge suction surface mold are fixed, and then the blade trailing edge material at the trailing edge suction surface is laid; First, the trailing edge suction surface mold is removed, the trailing edge of the blade is separated from the trailing edge suction surface mold, and then the trailing edge of the blade is removed from the trailing edge pressure surface mold, so that the trailing edge of the blade is formed in one piece.

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