Blade tip protective sleeve structure of wind driven generator

Abstract

The blade tip protection sleeve structure of the wind driven generator comprises a rear edge protection piece, a front edge protection piece and a tip end protection piece, a clamping groove is formed in the right wall of the tip end protection piece, and the left end of the rear edge protection piece and the left end of the front edge protection piece are fixedly clamped in the clamping groove; a rear edge groove is formed in the bottom face of the rear edge protection piece in the length direction, a front edge groove is formed in the top face of the front edge protection piece in the length direction, and a blade is clamped between the rear edge protection piece and the front edge protection piece. The device can be simply and quickly mounted on the blade, and meanwhile, the probability of tip deformation of the blade of the wind driven generator in the transportation process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blade tip protection, in particular to a blade tip protection sleeve structure for a wind turbine generator. Background Art

[0002] A wind turbine generator is a power device that converts wind energy into mechanical work, drives a rotor to rotate with the mechanical work, and finally outputs alternating current. Wind turbine generators are mainly installed in locations with relatively rich wind resources. Due to the large volume of the equipment, the installation method is assembly. Each part is transported to the installation location by vehicle or other transportation means and then assembled. The main component parts of a wind turbine generator are blades. Because the overall volume of the blades is large, the transportation method mainly uses large vehicles. During transportation, the blades are usually in a bare state and seriously lack protection. The tip of the blade is relatively thin as a whole and is extremely prone to bending during transportation. Therefore, a device that can protect the front end of the blade and is not easily detached during transportation is needed. Summary of the Utility Model

[0003] In view of this, the problem to be solved by the utility model is to provide a blade tip protection sleeve structure for a wind turbine generator, which can reduce the probability of deformation of the blade tip of the wind turbine generator during transportation and can also prevent accidents caused by accidental collisions of workers.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A blade tip protection sleeve structure for a wind turbine generator, including a trailing edge protection member, a leading edge protection member, and a tip protection member. A clamping groove is formed in the right wall of the tip protection member, and the left ends of the trailing edge protection member and the leading edge protection member are fixedly clamped in the clamping groove;

[0006] A trailing edge groove is formed in the bottom surface of the trailing edge protection member along the length direction, and a leading edge groove is formed in the top surface of the leading edge protection member along the length direction. The trailing edge protection member and the leading edge protection member clamp the blade tightly.

[0007] Further, the left and right side walls of the tip protection member are parallel to each other, and the area of the left side wall of the tip protection member is larger than that of the right side wall.

[0008] Further, a triangular gap is formed between the middle section and the right end of the trailing edge protection member and the leading edge protection member, and the gap distance gradually increases from left to right.

[0009] Further, limiting through grooves are formed at the top end of the trailing edge protection member and the bottom end of the leading edge protection member for limiting the position of the binding rope.

[0010] Further, the upper end of the trailing edge protection member is of a triangular prism structure, and the lower end is of a cuboid structure; the cross-sectional structures of the trailing edge protection member and the leading edge protection member in the length direction are mirror-symmetrical.

[0011] Further, a first notch is formed in the bottom surface of the trailing edge protection member, a second notch is formed in the lower edge of the leading edge protection member, and a third notch is formed in the top surface of the leading edge protection member.

[0012] The uppermost points of the first notch and the second notch are located on the same vertical line, and the minimum distance between the uppermost point of the second notch and the upper left corner of the leading edge protection member is not greater than the minimum distance between the uppermost point of the second notch and the uppermost point of the first notch.

[0013] Further, the trailing edge protection member, the leading edge protection member, and the tip protection member are integrally formed.

[0014] Further, a pressure relief groove is provided at the bottom end of the leading edge groove, and the width of the pressure relief groove is greater than the width of the leading edge groove.

[0015] The advantages and positive effects of the present utility model are as follows:

[0016] By providing a tip protection member, a trailing edge protection member, and a leading edge protection member, the left ends of the trailing edge protection member and the leading edge protection member are fixedly clamped into the clamping groove, the upper edge of the tip of the blade is clamped into the trailing edge groove, and the lower edge of the blade is clamped into the leading edge groove, so as to comprehensively protect the edge of the tip of the blade and reduce the probability of deformation of the tip of the wind turbine blade during transportation.

[0017] By forming a first notch in the bottom surface of the trailing edge protection member, a second notch in the lower edge of the leading edge protection member, and a third notch in the top surface of the leading edge protection member, when installing the protective sleeve, only the leading edge protection member needs to be rotated, the installation process is simple and convenient, and the probability of deformation of the blade edge during installation is reduced. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0019] Figure 1 is a three-dimensional view of the tip protection sleeve structure of a wind turbine of the present utility model;

[0020] Figure 2 is a front view of the tip protection sleeve structure of a wind turbine of the present utility model;

[0021] In the figure: 1, tip protection member; 2, trailing edge protection member; 201, trailing edge groove; 3, leading edge protection member; 301, leading edge groove; 302, pressure relief groove; 4, limiting through groove; 5, first notch; 6, second notch; 7, third notch. Detailed Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] The present utility model provides a tip protection sleeve structure for a wind turbine, as Figures 1 to 2 shown, which includes a trailing edge protection member in a strip structure, a leading edge protection member in a strip structure, and a tip protection member. The left and right side walls of the tip protection member are parallel, and a clamping groove is formed on the left side wall of the tip protection member. During actual use, the left ends of the trailing edge protection member and the leading edge protection member are respectively fixed and clamped into the upper end and the lower end of the clamping groove, and the trailing edge protection member and the leading edge protection member clamp the blade therebetween, capable of protecting the blade edges in all directions.

[0026] The area of the left side wall of the tip protection member is larger than that of the right side wall, so as to reduce the local pressure ratio generated by impact in the form of uniform force, thereby reducing the pressure magnitude at the blade apex and reducing the probability of blade apex deformation.

[0027] A trailing edge groove is formed on the bottom surface of the trailing edge protection member, and a leading edge groove is formed on the top surface of the leading edge protection member. The trailing edge of the blade is placed in the trailing edge groove, and the leading edge of the blade is placed in the leading edge groove, protecting the blade edges from being deformed easily.

[0028] After the left ends of the trailing edge protection member and the leading edge protection member are fixedly snapped into the clamping groove, the left ends of the trailing edge protection member and the leading edge protection member are in a close-fitting state. A triangular gap is formed between the middle sections and the right ends of the trailing edge protection member and the leading edge protection member, and the gap distance gradually increases from left to right. While protecting the tip edge of the blade, the use of production materials can be saved.

[0029] To make the right ends of the trailing edge protection member and the leading edge protection member closely adhere to the blade surface, ropes are tied to the outer sides of the right ends of the trailing edge protection member and the leading edge protection member. Limiting through grooves are provided at the top end of the trailing edge protection member and the bottom end of the leading edge protection member to limit the position of the ropes and improve the installation stability of the protective sleeve. An embodiment of the present application is that an adhesive binding band can be wound around the outer sides of the leading edge protection member and the trailing edge protection member, and a small part of the binding band is wound around the blade to improve the installation stability of the protective sleeve.

[0030] An embodiment of the present application is that the leading edge protection member, the trailing edge protection member, and the tip protective sleeve are integrally formed, which can protect the relatively thick blade at the tip. During installation, it is directly sleeved on the outside of the blade tip in the form of a sleeve bag and then fixed with a binding band. While protecting the tip, it can also prevent workers from accidentally hitting it.

[0031] The upper end of the trailing edge protection member is of a triangular prism structure, and the lower end is of a cuboid structure. It can make the minimum linear distance between the side wall of the trailing edge groove and the outer wall of the trailing edge protection member similar, ensuring the anti-deformation efficiency of the protective sleeve while saving the use of production materials. The cross-sectional structures of the trailing edge protection member and the leading edge protection member in the length direction are mirror-symmetrical.

[0032] The installation process of the protective sleeve is as follows: The trailing edge of the blade is snapped into the trailing edge groove, the position of the blade tip is adjusted to avoid the tip contacting the bottom surface of the clamping groove, and then the left end of the trailing edge protection member is snapped into the upper end of the clamping groove; the leading edge groove is opposite to the leading edge of the blade, and the leading edge protection member is horizontally moved to the left, and the left end of the leading edge protection member is snapped into the lower end of the clamping groove; ropes are tied to the right ends of the trailing edge protection member and the leading edge protection member. However, the above installation method is time-consuming and laborious, and when the force application direction is incorrect, it is easy to cause the edge of the blade to deform.

[0033] To reduce the probability of blade deformation, a first notch is provided on the bottom surface of the trailing edge protection member, a second notch is provided on the lower edge of the leading edge protection member, and a third notch is provided on the top surface of the leading edge protection member. Both the first notch and the second notch are of a fan-shaped structure or a semi-circular structure, and the tip position of the fan points to the right. The third groove is located between the second notch and the left end face of the leading edge protection member. After the protective sleeve is installed, the topmost points of the first notch and the second notch are on the same vertical line, and the minimum distance between the topmost point of the second notch and the upper left corner of the leading edge protection member is less than the minimum distance between the topmost point of the second notch and the topmost point of the first notch.

[0034] The protective cover is made of plastic material and has properties such as compressibility, deformability, high friction, and high sealing performance. The installation process of the leading-edge protection part is as follows: The topmost point of the second notch contacts the outer edge of the clamping groove. The upper left corner of the leading-edge protection part is located within the first notch. At this time, only half of the blade edge is clamped in. Rotate the leading-edge protection part counterclockwise with the topmost point of the second notch as the center. The third notch provides space for the upper left corner of the leading-edge protection part to be compressed and deformed, enabling the upper left corner of the leading-edge protection part to enter the clamping groove. Continue to rotate the leading-edge protection part counterclockwise, and at the same time apply an upward force vertically to make the blade edge enter the deep part of the leading-edge groove, causing the outer edge of the clamping groove to move out of the second notch. Then continue to rotate the leading-edge protection part counterclockwise until its left end is completely clamped into the clamping groove.

[0035] When installing the leading-edge protection part, the blade edge gradually clamps into the leading-edge groove from left to right and from top to bottom. Since the leading-edge groove is extremely narrow, in order to avoid the inability to discharge air in time during the clamping process, it is very easy to generate internal gaps (the air in the internal gaps generates internal pressure) in the leading-edge groove. The vibration during transportation can change the size of the internal gaps (the internal pressure will also change), resulting in blade deformation.

[0036] To reduce the probability of blade deformation during transportation, a pressure relief groove is provided at the bottom of the leading-edge groove. The width of the pressure relief groove is greater than the width of the leading-edge groove. During the process of the blade edge gradually clamping into the leading-edge groove from left to right and from top to bottom, air can be discharged in time. After the protective cover is installed, by pressing the surface of the leading-edge protection part, the position of the air gap is moved so that it is discharged from the pressure relief groove.

[0037] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equal changes and improvements made within the scope of the present invention should still fall within the scope covered by this patent.

Claims

1. A tip protection sleeve structure for a wind turbine, characterized in that It includes a trailing edge protection member (2), a leading edge protection member (3) and a tip protection member (1). A clamping groove is formed in the right wall of the tip protection member (1), and the left ends of the trailing edge protection member (2) and the leading edge protection member (3) are fixedly clamped in the clamping groove. A trailing edge groove (201) is formed in the bottom surface of the trailing edge protection member (2) along the length direction, and a leading edge groove (301) is formed in the top surface of the leading edge protection member (3) along the length direction. A blade is clamped between the trailing edge protection member (2) and the leading edge protection member (3).

2. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, The left and right side walls of the tip protection member (1) are parallel and opposite to each other, and the area of the left side wall of the tip protection member (1) is larger than that of the right side wall.

3. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, A triangular gap is formed between the middle section and the right end of the trailing edge protection member (2) and the leading edge protection member (3), and the gap distance gradually increases from left to right.

4. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, Limit through grooves (4) are formed at the top end of the trailing edge protection member (2) and the bottom end of the leading edge protection member (3) for limiting the position of the binding rope.

5. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, The upper end of the trailing edge protection member (2) is of a triangular prism structure, and the lower end is of a cuboid structure; the cross-sectional structures of the trailing edge protection member (2) and the leading edge protection member (3) in the length direction are mirror-symmetrical.

6. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, A first notch (5) is formed in the bottom surface of the trailing edge protection member (2), a second notch (6) is formed in the lower edge of the leading edge protection member (3), and a third notch (7) is formed in the top surface of the leading edge protection member (3); The topmost points of the first notch (5) and the second notch (6) are located on the same vertical line, and the minimum distance between the topmost point of the second notch (6) and the upper left corner of the leading edge protection member (3) is not greater than the minimum distance between the topmost point of the second notch (6) and the topmost point of the first notch (5).

7. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that The trailing edge protection member (2), the leading edge protection member (3) and the tip protection member (1) are integrally formed.

8. The tip protection sleeve structure of a wind turbine according to claim 1, characterized in that, A pressure relief groove (302) is provided at the bottom end of the leading edge groove (301), and the width of the pressure relief groove (302) is larger than the width of the leading edge groove (301).

Images