Wind power blade

Abstract

The utility model relates to a wind power blade which comprises a blade body, a lightning arrester and a reinforcing device, the blade body comprises a containing groove, the lightning arrester is connected to the blade body through a connecting piece, the connecting piece extends into the containing groove, and the reinforcing device comprises a fixing piece and a driving piece which are arranged in the containing groove and arranged opposite to the connecting piece; the driving piece is used for driving the fixing piece to move towards the direction of the connecting piece, so that the fixing piece is connected to the connecting piece, and the connecting piece is limited to be separated from the containing groove. According to the technical scheme, the driving piece located in the containing groove drives the fixing piece to move, so that the fixing piece can be connected with the connecting piece, the connecting piece is limited in the containing cavity under the condition that the fixing piece is not detached, the connecting piece can still be stable even if the wind power blade encounters strong wind weather or is impacted by the outside, and the service life of the wind power blade is prolonged. And the use reliability and safety are improved.

Description

Technical Field

[0001] The present disclosure relates to the field of wind turbine blade technology and equipment, and in particular, to a wind turbine blade. Background Art

[0002] Wind turbines are generally installed on high ground in the wild. The wind turbine blades of wind turbines are usually located at least 70 meters above the ground. In order to prevent lightning from damaging the wind turbine blades, lightning protection devices need to be installed on the wind turbine blades to protect them.

[0003] In related technologies, lightning protection devices typically consist of a housing and a lightning rod mounted on the outer wall of the housing. The housing is connected to the wind turbine blades by bolts. However, high-altitude wind turbine blades are prone to shaking when encountering strong winds or collisions with flying objects. In severe cases, the bolts can loosen or even fall off, leading to safety accidents. Utility Model Content

[0004] The purpose of the present disclosure is to provide a wind turbine blade that can further improve the stability of the lightning protection device, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above objectives, the present disclosure provides a wind turbine blade, comprising:

[0006] a blade body including a receiving groove;

[0007] a lightning protection device connected to the blade body via a connector, the connector extending into the receiving groove; and

[0008] The reinforcement device includes a fixing member and a driving member arranged in the accommodating groove and opposite to the connecting member, wherein the driving member is used to drive the fixing member to move toward the connecting member so that the fixing member is connected to the connecting member, and is used to limit the connecting member from detaching from the accommodating groove.

[0009] Optionally, the driving member includes a first driving portion movably connected to the side wall of the accommodating groove along a first direction and a second driving portion connected to the first driving portion, the second driving portion being partially located outside the blade body, and the second driving portion being used to drive the first driving portion to move; the fixing member also includes a first mating portion movably connected to the first driving portion, and the first driving portion is used to drive the first mating portion to move toward the connecting member.

[0010] Optionally, the reinforcement device also includes a limiting assembly, which includes a first limiting member arranged inside the blade body and a second limiting member connected to the outer wall of the blade body. The second driving part is sequentially passed through the second limiting member and the first limiting member and extends into the accommodating groove. The second limiting member is used to limit the movement of the first limiting member in a direction away from the accommodating groove.

[0011] Optionally, the first driving part includes a first mating surface, and the first mating part includes a second mating surface; the first mating surface and the second mating surface are both constructed as beveled surfaces; wherein the first mating surface and the second mating surface are slidingly fitted; or, one of the first mating surface and the second mating surface is provided with a plurality of rollers to roll with the other of the first mating surface and the second mating surface.

[0012] Optionally, a limiting groove is further formed on the bottom wall of the accommodating groove perpendicular to the side wall, and the first matching portion includes a limiting portion arranged to move in the limiting groove, and the limiting groove is used to guide the movement of the first matching portion.

[0013] Optionally, the fixing member further includes a second matching portion connected to the first matching portion, and the second matching portion is used to be connected to the connecting member; wherein the second matching portion is constructed as a U-shaped structure.

[0014] Optionally, the lightning protection device includes a shell, which is connected to the blade body through the connecting member; the wind turbine blade also includes a fixing frame, one end of the fixing frame is connected to the blade body, and the other end is connected to the shell, the fixing frame, the blade body and the shell together form a second accommodating space, and the driving member is partially located in the second accommodating space.

[0015] Optionally, there are multiple accommodating slots and multiple reinforcing devices, and the multiple accommodating slots correspond one-to-one to the multiple reinforcing devices.

[0016] Optionally, the lightning protection device also includes a lightning rod arranged on the outer wall of the shell, a grounding wire located inside the shell and connected to the lightning rod, and a lightning rod arranged on the grounding wire; the multiple accommodating grooves are respectively located on opposite sides of the grounding wire along the first direction.

[0017] Optionally, the shell includes an inner shell and an outer shell, the inner shell is formed with a accommodating cavity for accommodating the blade body, the outer shell is connected to the inner shell on opposite sides along a first direction through buffer members, the outer shell is provided with limiting rods on opposite sides along a second direction perpendicular to the first direction, and the outer shell includes a sliding portion movably connected to the limiting rod along the first direction.

[0018] With the above technical solution, when the blade body and the lightning arrester are assembled, the connecting member can extend into the receiving groove of the blade body. The driving member located in the receiving groove drives the fixing member to move, so that the fixing member can be connected to the connecting member. When the fixing member is not removed, the connecting member is confined within the receiving cavity. Even in strong winds or when the wind turbine blade is subjected to external impact, it can still remain stable. As a result, the wind turbine blade provided by the present disclosure can further improve the stability of the lightning arrester, making it safer and more reliable.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic diagram of the overall structure of a wind turbine blade provided in an exemplary embodiment of the present disclosure;

[0022] Figure 2 is a schematic diagram of the internal structure of a wind turbine blade provided in an exemplary embodiment of the present disclosure;

[0023] Figure 3 yes Figure 2 A magnified view of position A in the middle;

[0024] Figure 4 yes Figure 3 Enlarged view of position B in the middle;

[0025] Figure 5 is a schematic diagram of the overall structure of the driving member and the fixing member provided in an exemplary embodiment of the present disclosure;

[0026] Figure 6 is a schematic diagram of the overall structure of a housing provided in an exemplary embodiment of the present disclosure;

[0027] Figure 7 yes Figure 6 Enlarged view of position C in the middle.

[0028] Description of Reference Numerals

[0029] 100, blade body; 101, receiving groove; 102, connecting member; 103, fixing member; 1030, second matching portion; 1031, first matching portion; 1032, second matching surface; 1033, limiting portion; 104, driving member; 1040, first driving portion; 1041, second driving portion; 1042, first matching surface; 1043, screw; 1044, first limiting member; 1045, handle; 104 6. Second limiting member; 105. Roller; 106. Limiting groove; 107. Shell; 1070. Inner shell; 1071. Outer shell; 1072. Buffer member; 1073. Accommodating chamber; 1074. Limiting rod; 1075. Sliding part; 1076. Rubber pad; 108. Fixing frame; 109. Accommodating space; 110. Lightning rod; 111. Grounding wire; 112. Lightning receptor; 113. Side wall; 114. Bottom wall. DETAILED DESCRIPTION

[0030] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0031] In the present disclosure, unless otherwise specified, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component. In addition, the terms "first" and "second" used in the present disclosure are to distinguish one element from another and have no order or importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0032] according to Figures 1 to 7 As shown, an embodiment of the present disclosure provides a wind turbine blade, which may include a blade body 100, a lightning protection device and a reinforcement device. The blade body 100 may include a receiving groove 101. The lightning protection device is connected to the blade body 100 through a connector 102. The connector 102 extends into the receiving groove 101. The reinforcement device may include a fixing member 103 and a driving member 104 arranged in the receiving groove 101 and opposite to the connecting member 102. The driving member 104 is used to drive the fixing member 103 to move toward the connecting member 102 so that the fixing member 103 is connected to the connecting member 102, and is used to limit the connecting member 102 from being separated from the receiving groove 101.

[0033] Through the above technical solution, when the blade body 100 and the lightning protection device are assembled, the connecting member 102 can extend into the receiving groove 101 of the blade body 100, and the driving member 104 located in the receiving groove 101 drives the fixing member 103 to move, so that the fixing member 103 can be connected to the connecting member 102, so that when the fixing member 103 is not removed, the connecting member 102 is confined in the receiving cavity 1073, even in strong winds or when the wind turbine blade is hit by external impact, the lightning protection device can still be stable, safer and more reliable.

[0034] The structure of the connecting member 102 can be adaptively adjusted according to actual needs. For example, the connecting member 102 can also be constructed as a connecting bolt threadedly connected to the blade body 10000. This disclosure does not make any specific limitation to this.

[0035] In some embodiments, for example, referring to Figures 1 to 5 As shown, the driving member 104 may include a first driving portion 1040 movably connected to the side wall 113 of the accommodating groove 101 along the first direction X and a second driving portion 1041 connected to the first driving portion 1040, the second driving portion 1041 is partially located outside the blade body 100, so that the operator can operate the second driving portion 1041, and the second driving portion 1041 is used to drive the first driving portion 1040 to move; the fixing member 103 may also include a first matching portion 1031 movably connected to the first driving portion 1040, and the first driving portion 1040 is used to drive the first matching portion 1031 to move toward the connecting member 102.

[0036] The structures of the first driving portion 1040, the second driving portion 1041, and the first matching portion 1031 can be adaptively adjusted according to actual needs. For example, the first driving portion 1040 can be configured as a slider that slides and fits with the side wall 113 of the receiving groove 101. The first matching portion 1031 can be configured as another slider that can cooperate with the slider, so that when the first driving portion 1040 moves toward the bottom wall 114 of the receiving groove 101, it can push the first matching portion 1031 to move toward the connecting member 102. The second driving portion 1041 can include a screw 1043 that passes through the first driving portion 1040 and extends to the bottom wall 114 of the receiving groove 101 and is threadedly connected to the first driving portion 1040, so that the first driving portion 1040 can be raised and lowered by rotating the screw 1043. This disclosure does not specifically limit this.

[0037] Optionally, a handle 1045 may be provided at one end of the screw rod 1043 outside the receiving groove 101 to facilitate an operator to rotate the screw rod 1043 .

[0038] It is understandable that the driving member 104 may also be a direct electric push rod, the driving portion of which may be connected to the first driving portion 1040, and the driving of the first mating portion 1031 may also be achieved by turning on the electric push rod.

[0039] The following briefly describes the working process of the first driving portion 1040 and the second driving portion 1041. For example, an operator rotates the handle 1045 to drive the screw 1043 to rotate, so that the first driving portion 1040, which is threadedly connected to the screw 1043, can move in a first direction. For example, when the screw 1043 rotates clockwise, the first driving portion 1040 can move in a direction away from the bottom wall 114 of the receiving tank 101; when the screw 1043 rotates counterclockwise, the first driving portion 1040 can move in a direction toward the bottom wall 114 of the receiving tank 101. This disclosure does not specifically limit this, and those skilled in the art can make adaptive adjustments based on actual needs.

[0040] Preferably, when the first driving portion 1040 is configured as a slider, the side wall 113 of the accommodating groove 101 may be provided with a sliding groove that cooperates with the slider, so that the sliding groove can guide the movement of the slider, thereby improving the reliability of use.

[0041] The first direction X may be a vertical direction.

[0042] In some embodiments, for example, referring to Figures 2 to 5 As shown, the reinforcement device may further include a limiting assembly, which may include a first limiting member 1044 disposed inside the blade body 10000 and a second limiting member 1046 connected to the outer side wall of the blade body 10000. The second driving portion 1041 is sequentially disposed through the second limiting member 1046 and the first limiting member 1044 and extends into the receiving groove 101. The second limiting member 1046 is used to limit the movement of the first limiting member 1044 in a direction away from the receiving groove 101. By providing the first limiting member 1044 and the second limiting member 1046, the second driving portion 1041 can be limited to move along the first direction X, thereby improving reliability and safety in use.

[0043] The first limiting member 1044 may be configured as a rolling bearing, and the second limiting member 1046 may be configured as a limiting plate.

[0044] The limiting plate can be detachably connected to the blade body 10000 by bolts, so that the operator can easily disassemble and assemble the first limiting member 1044. Of course, the limiting plate can also be connected to the blade body 10000 by welding. This disclosure does not make specific limitations on this.

[0045] In some embodiments, for example, referring to Figures 1 to 5As shown, the first driving portion 1040 may include a first mating surface 1042 , and the first mating portion 1031 may include a second mating surface 1032 ; both the first mating surface 1042 and the second mating surface 1032 may be configured as beveled surfaces.

[0046] In one embodiment, the first mating surface 1042 and the second mating surface 1032 are slidably fitted together. Thus, the sliding fit between the first mating surface 1042 and the second mating surface 1032 can make the first driving portion 1040 drive the first mating portion 1031 more stably.

[0047] Alternatively, in another embodiment, one of the first mating surface 1042 and the second mating surface 1032 is provided with a plurality of rollers 105 for rolling engagement with the other of the first mating surface 1042 and the second mating surface 1032. Thus, providing a plurality of rollers 105 on the first mating surface 1042 or the second mating surface 1032 can facilitate smoother driving of the first driving portion 1040 on the first mating portion 1031.

[0048] In some embodiments, for example, referring to Figure 2 and Figure 3 As shown, a limiting groove 106 may be further formed on the bottom wall 114 of the accommodating groove 101, which is perpendicular to the side wall 113. The first mating portion 1031 may include a limiting portion 1033 disposed within the limiting groove 106 and movable therein. The limiting groove 106 is used to guide the movement of the first mating portion 1031. The provision of the limiting groove 106 can limit the movement distance of the first mating portion 1031 in the second direction Y. Furthermore, the cooperation between the limiting portion 1033 and the limiting groove 106 can make the movement of the first mating portion 1031 more stable and more reliable in use.

[0049] The structure of the limiting portion 1033 can be adaptively adjusted according to actual needs. For example, the limiting portion 1033 can also be configured as a slider, or the limiting portion 1033 can also be configured as a pulley. This disclosure does not make specific limitations on this.

[0050] In some embodiments, for example, referring to Figure 2 、 Figure 3 and Figure 5 As shown, the fixing member 103 may further include a second matching portion 1030 connected to the first matching portion 1031. The second matching portion 1030 is used to connect to the connecting member 102 to limit the connecting member 102 from being separated from the receiving groove 101, so as to further improve the stability and safety of the wind turbine blade disclosed in the present invention.

[0051] Among them, the second mating portion 1030 can be constructed as a U-shaped structure, and the opening size of the U-shaped structure should be able to accommodate the connector 102 into the groove of the U-shaped structure, and the mating surface where the U-shaped structure and the connector 102 contact each other can fit together with the connector 102; it can be understood that the mating surface where the U-shaped structure and the connector 102 contact each other can have a pattern for increasing friction, so that when the mating surface contacts the connector 102, it can limit the movement of the connector 102 in the vertical direction to prevent the connector 102 from escaping from the accommodating groove 101.

[0052] Optionally, one side of the connector 102 can be in contact with the side wall 113 of the accommodating groove 101 as much as possible. When the first driving part 1040 drives the first matching part 1031 to drive the second matching part 1030 to move toward the connector 102, the second matching part 1030 constructed as a U-shaped structure can abut against the side wall 113 of the accommodating groove 101 when it moves to the maximum distance, so as to play a similar clamping role on the connector 102, so as to simultaneously limit the movement of the connector 102 in the first direction X and the second direction Y, and be more reliable in use.

[0053] The second direction Y may be a direction perpendicular to the first direction X, that is, it may be a direction in which the first matching portion 1031 moves toward the connector 102 .

[0054] In some embodiments, for example, referring to Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown, the lightning protection device may further include a housing 107, which may be connected to the blade body 100 via a connector 102. The wind turbine blade may further include a fixing frame 108, one end of which is connected to the blade body 100 and the other end is connected to the housing 107. The fixing frame 108, the blade body 100, and the housing 107 together form a receiving space 109, and the driver 104 is partially located within the receiving space 109. This allows the driver 104 located within the receiving space 109 to be protected after the wind turbine blade is assembled, preventing corrosion or damage to the driver 104 caused by the external environment. The fixing frame 108 can further secure the blade body 100 and the housing 107 to improve stability and safety. The handle 1045 of the driver 104 may be located within the receiving space 109.

[0055] The fixing frame 108 can be constructed in any suitable form. For example, the fixing frame 108 can be in the form of a shell that is sleeved on the blade body 10000. After the connector 102 is locked by the handle 1045, the shell can be slid along the blade body 10000 toward the housing 107. After sliding into place, the fixing frame can be fixed to the blade body 10000 and / or the housing 107 by fasteners such as bolts. The present disclosure is not limited to this.

[0056] Optionally, the surface of the fixing frame 108 may be covered with an insulating protective film to further improve safety.

[0057] In some embodiments, for example, referring to Figure 2 As shown, the number of the receiving grooves 101 and the number of the reinforcement devices can be multiple, and the multiple receiving grooves 101 correspond to the multiple reinforcement devices one by one, so as to achieve multi-directional stabilization of the shell 107 and the blade body 100. In particular, the present disclosure utilizes the inner side wall of the blade body 10000 to form the receiving groove 101, and the portion of the plate on the blade body 10000 that forms the receiving groove 101 can be detachably connected to the blade body 10000, so as to facilitate the arrangement of the receiving groove 101 and the arrangement of related components within the receiving groove 101.

[0058] Optionally, the lightning protection device may further include a lightning rod 110 disposed on the outer wall of the housing 107, a grounding wire 111 located inside the housing 107 and connected to the lightning rod 110, and a lightning receptor 112 disposed on the grounding wire 111, with the plurality of receiving slots 101 respectively located on opposite sides of the grounding wire 111 along the first direction X. This makes the interior of the housing 107 more neatly arranged, facilitating subsequent maintenance by operators.

[0059] Regarding the structure and function of the lightning receptor 112, those skilled in the art may refer to relevant literature in the prior art, and the present disclosure will not elaborate on them here.

[0060] The grounding conductor 111 and the lightning receptor 112 may be located inside the blade body 100. This disclosure does not impose any specific limitation on this.

[0061] In some embodiments, for example, referring to Figure 6 and Figure 7 As shown, the housing 107 may include an inner housing 1070 and an outer housing 1071. The inner housing 1070 may be formed with a receiving cavity 1073 for receiving the blade body 100. The outer housing 1071 may be connected to the inner housing 1070 via buffers on opposite sides along a first direction X. The outer housing 1071 may be provided with limit rods 1074 on opposite sides along a second direction Y perpendicular to the first direction X. The outer housing 1071 may include a sliding portion 1075 movably connected to the limit rods 1074 along the first direction X. The provision of the buffers can mitigate the impact caused by excessive wind force or collision with foreign objects. The provision of the limit rods 1074 and the sliding portion 1075 connected to the limit rods 1074 can limit the movement distance of the outer housing 1071 relative to the inner housing 1070. Together with the buffers, the impact of external impact can be minimized to further improve safety and stability.

[0062] The buffer member can be configured as a damper to achieve a shock absorption effect. Of course, the outer shell 1071 can also be connected to the inner shell 1070 via springs on both sides of the opposite sides along the first direction X, that is, the buffer member can be configured as a spring to alleviate the impact. The present disclosure is not limited to this.

[0063] The outer shell 1071 and the inner shell 1070 can be constructed in any form. For example, the cross-sections of the outer shell 1071 and the inner shell 1070 along the first direction can both be configured as a "mouth-shaped structure." Alternatively, the outer shell 1071 can be configured as two U-shaped plates, and the cross-section of the inner shell 1070 along the first direction can be configured as a mouth-shaped structure, with the two U-shaped plates being arranged on opposite sides of the inner shell 1070 along the first direction X. This disclosure is not particularly limited in this regard.

[0064] The sliding portion 1075 may also be configured as a slider, and a sliding rod is disposed through the slider, so that the slider can move along the sliding rod in the first direction X. The present disclosure is not limited thereto.

[0065] Optionally, a rubber pad 1076 may be provided on the outer wall of the housing 1071 to mitigate the vibration caused by collision with foreign objects. Figure 6 As shown, rubber pads 1076 may be provided on opposite sides of the housing 1071 along the second direction Y.

[0066] The present disclosure exemplarily describes the installation process of a wind turbine blade. For example, the shell 107 is connected to the blade body 100 through the connecting member 102, the connecting member 102 extends into the receiving groove 101, and the driving member 104 is operated to drive the fixing member 103 to move toward the connecting member 102, so that the fixing member 103 fixes the connecting member 102, and finally the fixing frame 108 is installed to complete the assembly.

[0067] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0068] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0069] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A wind turbine blade, characterized in that: include: a blade body including a receiving groove; a lightning protection device connected to the blade body via a connecting piece, wherein the connecting piece extends into the receiving groove; and The reinforcement device includes a fixing member and a driving member arranged in the accommodating groove and opposite to the connecting member, wherein the driving member is used to drive the fixing member to move toward the connecting member so that the fixing member is connected to the connecting member, and is used to limit the connecting member from detaching from the accommodating groove.

2. The wind turbine blade according to claim 1, characterized in that: The driving member includes a first driving portion movably connected to the side wall of the accommodating groove along a first direction and a second driving portion connected to the first driving portion, wherein the second driving portion is partially located outside the blade body, and the second driving portion is used to drive the first driving portion to move; the fixing member also includes a first matching portion movably connected to the first driving portion, and the first driving portion is used to drive the first matching portion to move toward the connecting member.

3. The wind turbine blade according to claim 2, characterized in that: The reinforcement device also includes a limiting assembly, which includes a first limiting member arranged inside the blade body and a second limiting member connected to the outer wall of the blade body. The second driving part is sequentially passed through the second limiting member and the first limiting member and extends into the accommodating groove. The second limiting member is used to limit the first limiting member from moving in a direction away from the accommodating groove.

4. The wind turbine blade according to claim 2, characterized in that: The first driving portion includes a first mating surface, and the first mating portion includes a second mating surface; The first mating surface and the second mating surface are both configured as beveled surfaces; wherein the first mating surface and the second mating surface are slidably fitted; or, One of the first mating surface and the second mating surface is provided with a plurality of rollers for rolling engagement with the other of the first mating surface and the second mating surface.

5. The wind turbine blade according to claim 2, characterized in that: A limiting groove is further formed on the bottom wall of the accommodating groove which is perpendicular to the side wall. The first matching portion includes a limiting portion which is arranged to move in the limiting groove. The limiting groove is used to guide the movement of the first matching portion.

6. The wind turbine blade according to any one of claims 2 to 5, characterized in that: The fixing member further includes a second matching portion connected to the first matching portion, and the second matching portion is used to connect to the connecting member; Wherein, the second matching portion is constructed as a U-shaped structure.

7. The wind turbine blade according to claim 1, characterized in that: The lightning protection device includes a shell, which is connected to the blade body through the connecting member; the wind turbine blade also includes a fixing frame, one end of which is connected to the blade body and the other end is connected to the shell, the fixing frame, the blade body and the shell together form a second accommodating space, and the driving member is partially located in the second accommodating space.

8. The wind turbine blade according to claim 7, characterized in that: There are multiple accommodating slots and multiple reinforcing devices, and the multiple accommodating slots correspond to the multiple reinforcing devices in a one-to-one manner.

9. The wind turbine blade according to claim 8, characterized in that The lightning protection device also includes a lightning rod arranged on the outer wall of the shell, a grounding wire located inside the shell and connected to the lightning rod, and a lightning receptor arranged on the grounding wire; the multiple accommodating grooves are respectively located on opposite sides of the grounding wire along the first direction.

10. The wind turbine blade according to claim 7, characterized in that: The shell includes an inner shell and an outer shell, the inner shell is formed with a accommodating cavity for accommodating the blade body, the outer shell is connected to the inner shell via buffer members on opposite sides along a first direction, and the outer shell is provided with limiting rods on opposite sides along a second direction perpendicular to the first direction, and the outer shell includes a sliding portion movably connected to the limiting rod along the first direction.

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