Wind power blade with stable structure

Abstract

The invention discloses a wind power blade with a stable structure, and particularly relates to the technical field of wind power blades, the wind power blade comprises a wind power blade base body and a wind power blade tail end, the wind power blade tail end is connected to the end part of the wind power blade tail end, and an assembling mechanism is arranged between the wind power blade base body and the end part of the wind power blade tail end; the assembling mechanism comprises a clamping sleeve arranged at the tail end of the wind power blade, and the end of the wind power blade base body is inserted into the clamping sleeve. A traditional integrated wind power blade is designed to be of a split type structure and is composed of the wind power blade base body and the wind power blade tail end, so that when the wind power blade needs to be transported, the overall length can be reduced, turning difficulty caused by the too long wind power blade is avoided, the transportation difficulty is lowered, influences on driving of other vehicles on roads are reduced, and the wind power blade is suitable for being transported. And the split assembly can adapt to the supporting strength when the wind power blade generates torsional force, and the stable effect and the connection stability after assembly are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blades, and more particularly to a wind turbine blade with a stable structure. Background Art

[0002] Wind turbine blades are the core components of wind turbines that convert wind energy into mechanical energy and then into electrical energy. They are usually connected to the hub, main shaft and other components. The shape of the blades is designed to generate lift and resistance under the action of wind, which is then converted into rotational power. When the wind blows through the blades, the curved surface on the blades will produce different air flow speeds and air pressure distributions, thereby generating a forward aerodynamic force on the blades, causing the blades to start rotating. This rotational power is transmitted to the generator through the main shaft, thereby generating electrical energy.

[0003] After searching, a Chinese patent with announcement number CN209414038U discloses a wind turbine blade and a wind turbine, wherein the wind turbine blade includes a blade body and a flexible extension portion. The blade body includes a suction surface and a pressure surface. The flexible extension portion includes a first end portion and a second end portion, wherein the first end portion is connected to the suction surface, and the second end portion freely extends toward the trailing edge of the blade body, and the flexible extension portion can produce passive deformation, thereby changing the flow trajectory of the airflow along the suction surface. Among them, the flexible extension portion is provided with a plurality of through holes, and the airflow can pass through the plurality of through holes.

[0004] Based on the structural design of the above-mentioned wind turbine blades, they are all integrated structures, the same as traditional wind turbine blades. Although the overall structure is relatively stable, in actual use, when transporting the wind turbine blades, due to the long length of the wind turbine blades, it is difficult for the transport vehicles to turn, the transportation is difficult, and it will affect the driving of other vehicles on the road. Therefore, it is very necessary to design a wind turbine blade that can be transported in detachable form and has a stable structure after assembly. Summary of the invention

[0005] In order to overcome the above-mentioned defects in the prior art, the present invention provides a wind turbine blade with a stable structure.

[0006] To achieve the above object, the present invention provides the following technical solution: a wind turbine blade with a stable structure, comprising a wind turbine blade base and a wind turbine blade tail end, wherein the wind turbine blade tail end is connected to the end of the wind turbine blade tail end, and an assembly mechanism is provided between the wind turbine blade base and the end of the wind turbine blade tail end;

[0007] The assembly mechanism includes a sleeve arranged at the end of the tail end of the wind turbine blade, the end head of the wind turbine blade base is inserted into the interior of the sleeve, and the end of the wind turbine blade base is provided with a plurality of insertion rods for being inserted into the interior of the tail end of the wind turbine blade, the outer wall of the sleeve is connected with a plurality of locking bolts for locking the wind turbine blade base, the end outer wall of the sleeve is provided with rotating seats at both sides of the wind turbine blade base, the two outer walls of the end of the wind turbine blade base are provided with positioning columns, the two rotating seats are movably connected with a flip plate for being sleeved on the outside of the positioning column, and the inner side of the positioning column is connected with a locking assembly for locking the position of the flip plate.

[0008] As a further improvement of the technical solution of the present invention, the interior of the ferrule is provided with a plurality of mounting holes for the locking bolts to pass through, the end outer wall of the wind turbine blade base is provided with a first internal thread groove at the connection point corresponding to the locking bolt, and a sealing ring is provided on the contact surface between the outer wall of the ferrule and the end of the locking bolt.

[0009] As a further improvement of the technical solution of the present invention, the inner wall of the tail end of the wind turbine blade is provided with a plurality of slots for inserting the rods, and the slots are adapted to the structure of the rods.

[0010] As a further improvement of the technical solution of the present invention, the flip plate and the rotating seat are rotatably connected via a rotating shaft, and the rotating seat and the end of the ferrule are welded and fixed.

[0011] As a further improvement of the technical solution of the present invention, a positioning hole for the positioning column to pass through is provided at the end of the flip plate, and the inner diameter of the positioning hole is larger than the outer diameter of the vertical section of the positioning column.

[0012] As a further improvement of the technical solution of the present invention, the positioning column is fixed to the outer wall of the wind turbine blade substrate by welding, and a second internal thread groove for connecting the locking assembly is provided inside the positioning column.

[0013] As a further improvement of the technical solution of the present invention, the locking assembly includes a screw threadedly connected to the interior of the positioning column, and one end of the screw is located on the outside of the flip plate and is welded with a blocking rod.

[0014] Beneficial effects of the present invention:

[0015] 1. The present invention designs the traditional integrated wind turbine blade into a split structure, which consists of a wind turbine blade base and a wind turbine blade tail, so that the overall length of the wind turbine blade can be reduced when it is needed to be transported, and there will be no difficulty in turning due to the excessive length, which reduces the difficulty of transportation and also reduces the impact on other vehicles on the road;

[0016] 2. An assembly mechanism is provided between the wind turbine blade base and the end of the wind turbine blade tail end. When the wind turbine blade base and the wind turbine blade tail end are assembled by the assembly mechanism, the end of the wind turbine blade base is inserted into the ferrule at the end of the wind turbine blade tail end, and the locking bolt is used to lock and fix, so as to maintain the stability of the wind turbine blade base and the wind turbine blade tail end during assembly. The insertion rod provided at the end of the wind turbine blade base can also be inserted into the inside of the wind turbine blade tail end, so as to form a stable structure between the end of the wind turbine blade base and the end of the wind turbine blade tail end. After installation, when the wind turbine blade rotates, the contact area of ​​the connection position between the wind turbine blade base and the wind turbine blade tail end is increased, so as to adapt to the support strength when the wind turbine blade generates torsional force, and improve the stability effect after assembly.

[0017] 3. By setting a rotatable flip plate, a positioning column and a locking assembly, the end of the flip plate is sleeved on the outside of the positioning column, and then the screw on the locking assembly is connected to the inside of the second internal thread groove, and the blocking rod is used to limit and lock the flip plate, so that the flip plate can be stably sleeved on the outside of the positioning column without falling off, so that there is a tight abutment force between the tail end of the wind turbine blade and the end of the wind turbine blade base, further increasing the connection stability between the tail end of the wind turbine blade and the end of the wind turbine blade base. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 For the present invention Figure 1 Enlarged view of part A.

[0020] Figure 3 It is a schematic diagram of the structure of the tail end of a wind turbine blade in the present invention.

[0021] Figure 4 It is a schematic diagram of the end structure of the wind turbine blade substrate in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the locking assembly in the present invention.

[0023] The accompanying drawings are marked as follows: 1. wind turbine blade base; 2. wind turbine blade tail end; 3. ferrule; 4. locking bolt; 5. rotating seat; 6. flip plate; 7. positioning column; 8. locking assembly; 101. first internal thread groove; 102. insertion rod; 301. mounting hole; 601. positioning hole; 701. second internal thread groove; 801. screw; 802. blocking rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] As attached Figure 1-5 A wind turbine blade with a stable structure shown in the figure comprises a wind turbine blade base 1 and a wind turbine blade tail end 2, wherein the wind turbine blade tail end 2 is connected to the end of the wind turbine blade tail end 2, and an assembly mechanism is arranged between the wind turbine blade base 1 and the end of the wind turbine blade tail end 2;

[0026] The assembly mechanism includes a sleeve 3 arranged at the end of the wind turbine blade tail end 2, the end head of the wind turbine blade base 1 is inserted into the interior of the sleeve 3, and the end of the wind turbine blade base 1 is provided with a plurality of insertion rods 102 for being inserted into the interior of the wind turbine blade tail end 2, the outer wall of the sleeve 3 is connected with a plurality of locking bolts 4 for locking the wind turbine blade base 1, and the outer wall of the end of the sleeve 3 is provided with a rotating seat 5 at both sides of the wind turbine blade base 1, and the two outer walls of the end of the wind turbine blade base 1 are provided with positioning columns 7, and the two rotating seats 5 are movably connected with a flip plate 6 for being sleeved on the outside of the positioning column 7, and the inner side of the positioning column 7 is connected with a locking assembly 8 for locking the position of the flip plate 6.

[0027] As attached Figure 1-4 As shown, the interior of the ferrule 3 is provided with a plurality of mounting holes 301 for the locking bolts 4 to pass through, and the outer wall of the end of the wind turbine blade base 1 corresponding to the connection of the locking bolts 4 is provided with a first internal thread groove 101, and the contact surface between the outer wall of the ferrule 3 and the end of the locking bolt 4 is provided with a sealing ring, so that the end of the wind turbine blade base 1 can be inserted into the interior of the ferrule 3 and locked and fixed by the locking bolts 4. The sealing ring is provided to increase the sealing performance of the connection to avoid corrosion and damage due to rain and air for a long time.

[0028] Among them, the inner wall of the tail end 2 of the wind turbine blade is provided with a plurality of slots for inserting the insertion rod 102, and the slots are adapted to the structure of the insertion rod 102, so as to form a stable structure between the end of the wind turbine blade base 1 and the end of the wind turbine blade tail end 2. After installation, when the wind turbine blade rotates, the contact area of ​​the connection position between the wind turbine blade base 1 and the end of the wind turbine blade tail end 2 can be increased, and the support strength when the wind turbine blade generates torsional force can be adapted, thereby improving the stability effect after assembly.

[0029] As attached Figure 1-3 As shown, the flip plate 6 and the rotating seat 5 are rotatably connected via a rotating shaft, and the rotating seat 5 and the end of the clamping sleeve 3 are welded and fixed to facilitate the connection between the flip plate 6 and the rotating seat 5.

[0030] As attached Figure 1-4 As shown, a positioning hole 601 for the positioning column 7 to pass through is provided at the end of the flip plate 6, and the inner diameter of the positioning hole 601 is larger than the outer diameter of the vertical section of the positioning column 7, so that the flip plate 6 can be stably mounted on the outside of the positioning column 7 after being flipped.

[0031] As attached Figure 1-2 and attached Figure 4 As shown, the positioning column 7 is welded and fixed to the outer wall of the wind turbine blade base 1, and a second internal thread groove 701 for connecting the locking assembly 8 is provided inside the positioning column 7, which facilitates the connection and fixation between the positioning column 7 and the wind turbine blade base 1, and facilitates the connection of the locking assembly 8.

[0032] As attached Figure 1-2 and attached Figure 4-5 As shown, the locking assembly 8 includes a screw 801 threadedly connected to the inside of the positioning column 7, and one end of the screw 801 is located on the outside of the flip plate 6 and is welded with a blocking rod 802, so that the screw 801 on the locking assembly 8 is connected to the inside of the second internal thread groove 701, and the blocking rod 802 is used to limit and lock the flip plate 6, so that the flip plate 6 can be stably mounted on the outside of the positioning column 7 without falling off, so that there is a tight abutment force between the tail end 2 of the wind turbine blade and the end of the wind turbine blade base 1, further increasing the stability of the connection between the tail end 2 of the wind turbine blade and the end of the wind turbine blade base 1.

[0033] Working principle: The present invention designs a wind turbine blade with stable structure. The specific structure is as shown in the attached manual. Figure 1-5As shown, in the present technical solution, the traditional integrated wind turbine blade is designed into a split structure, which consists of a wind turbine blade base 1 and a wind turbine blade tail end 2. This makes it possible to reduce the overall length of the wind turbine blade when it is needed to be transported, and there will be no difficulty in turning due to the excessive length, thereby reducing the difficulty of transportation and the impact on other vehicles on the road. An assembly mechanism is provided between the wind turbine blade base 1 and the end of the wind turbine blade tail end 2. When the wind turbine blade base 1 and the wind turbine blade tail end 2 are assembled by the provided assembly mechanism, the end of the wind turbine blade base 1 is inserted into the sleeve 3 at the end of the wind turbine blade tail end 2, and the locking bolt 4 is used to lock and fix it, so as to maintain the stability of the wind turbine blade base 1 and the wind turbine blade tail end 2 when they are assembled. The insertion rod 102 provided at the end of the wind turbine blade base 1 can also be inserted into the wind turbine blade tail end 2, so as to facilitate the end of the wind turbine blade base 1 and the wind turbine blade tail end 2 to be fixed. A stable structure is formed between the ends, which can increase the contact area between the connection position of the wind turbine blade base 1 and the end of the wind turbine blade tail end 2 during the rotation of the wind turbine blade after installation, and can adapt to the supporting strength when the wind turbine blade generates torsional force, thereby improving the stability effect after assembly. At the same time, a rotatable flip plate 6, a positioning column 7 and a locking assembly 8 are provided, and the end of the flip plate 6 is sleeved on the outside of the positioning column 7, and then the screw 801 on the locking assembly 8 is connected to the inside of the second internal thread groove 701, and the blocking rod 802 is used to limit and lock the flip plate 6, so that the flip plate 6 can be stably sleeved on the outside of the positioning column 7 without detaching, so that there is a tight abutment force between the wind turbine blade tail end 2 and the end of the wind turbine blade base 1, further increasing the stability of the connection between the wind turbine blade tail end 2 and the end of the wind turbine blade base 1, and it can be kept for use as a whole after assembly is completed.

[0034] Among them, in the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the case of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0035] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine blade with a stable structure, characterized in that: It comprises a wind turbine blade base (1) and a wind turbine blade tail end (2), wherein the wind turbine blade tail end (2) is connected to the end of the wind turbine blade tail end (2), and an assembly mechanism is provided between the wind turbine blade base (1) and the end of the wind turbine blade tail end (2); The assembly mechanism comprises a sleeve (3) arranged at the end of the wind turbine blade tail end (2), the end of the wind turbine blade base (1) is inserted into the sleeve (3), and the end of the wind turbine blade base (1) is provided with a plurality of insertion rods (102) for being inserted into the wind turbine blade tail end (2), the outer wall of the sleeve (3) is connected with a plurality of locking bolts (4) for locking the wind turbine blade base (1), the outer wall of the end of the sleeve (3) is provided with a rotating seat (5) at both sides of the wind turbine blade base (1), the two outer walls of the end of the wind turbine blade base (1) are provided with positioning columns (7), the two rotating seats (5) are movably connected with a flip plate (6) for being sleeved on the outside of the positioning column (7), and the inner side of the positioning column (7) is connected with a locking component (8) for locking the position of the flip plate (6).

2. The structurally stable wind turbine blade according to claim 1, characterized in that: The interior of the ferrule (3) is provided with a plurality of mounting holes (301) for the locking bolts (4) to pass through, the outer wall of the end of the wind turbine blade base (1) is provided with a first internal thread groove (101) at the connection point corresponding to the locking bolts (4), and the contact surface between the outer wall of the ferrule (3) and the end of the locking bolt (4) is provided with a sealing ring.

3. The structurally stable wind turbine blade according to claim 1, characterized in that: The inner wall of the wind turbine blade tail end (2) is provided with a plurality of slots for inserting the insertion rod (102), and the slots are compatible with the structure of the insertion rod (102).

4. The structurally stable wind turbine blade according to claim 1, characterized in that: The flip plate (6) is rotatably connected to the rotating seat (5) via a rotating shaft, and the rotating seat (5) is fixed to the end of the clamping sleeve (3) by welding.

5. The structurally stable wind turbine blade according to claim 1, characterized in that: The end of the flip plate (6) is provided with a positioning hole (601) for the positioning column (7) to pass through, and the inner diameter of the positioning hole (601) is larger than the outer diameter of the vertical section of the positioning column (7).

6. The structurally stable wind turbine blade according to claim 1, characterized in that: The positioning column (7) is fixed to the outer wall of the wind turbine blade base (1) by welding, and a second internal thread groove (701) for connecting a locking assembly (8) is provided inside the positioning column (7).

7. The structurally stable wind turbine blade according to claim 1, characterized in that: The locking assembly (8) comprises a screw rod (801) threadedly connected to the interior of the positioning column (7), and one end of the screw rod (801) is located on the outside of the flip plate (6) and is welded with a blocking rod (802).

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