Regulator for movable molded surface of wind power blade

Abstract

The utility model discloses a wind power blade movable profile regulator which comprises an eyelet bolt, a lengthened nut, a reverse thread bolt, channel steel, a boss cotter pin, a rectangular pipe, a die steel frame supporting plate, a corrugated pipe A and a corrugated pipe B. The eyelet bolt and the rectangular pipe are fixed to the die steel frame supporting plate through the boss cotter pin. The other end of the eyelet bolt penetrates through the corrugated pipe B and then is fixedly connected with the lengthened nut through threads, the relative distance between the channel steel and the rectangular pipe is achieved by rotating the lengthened nut or rotating the reverse-thread bolt after the position of the lengthened nut is fixed, the installation procedure is simplified, the problem that the adjuster is stressed on one side is solved, and the adjusting efficiency is improved. And the installed regulator does not need to be disassembled, so that the manufacturing cost and the labor cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of large wind turbine blades, specifically a wind turbine blade movable profile adjuster. Background Technology

[0002] Wind power, as one of the mainstays of global renewable energy, has developed rapidly in recent years and has broad prospects for the future. Wind power has significant advantages in terms of environmental protection, economy, and sustainability, making it a key solution for replacing fossil fuels and achieving a zero-carbon future.

[0003] In wind turbine generators, regulators, serving as adjustable components or control systems, are installed on the moving surfaces of the blades, such as flaps, variable trailing edges, and active twist sections. Regulators are primarily used to dynamically optimize the aerodynamic characteristics of the blades to adapt to complex and changing wind conditions, thereby improving power generation efficiency, reducing load, and extending the unit's lifespan. Regulators are a key technology for the development of intelligent, lightweight, and highly reliable wind turbine blades, and are particularly important for large offshore wind turbines and low-wind-speed wind farms.

[0004] While regulators installed on the moving surfaces of wind turbine blades can significantly improve the performance and adaptability of wind turbines, they also have some technical, economic, and maintenance drawbacks, including the following:

[0005] First, there is the problem of structural complexity. When installing the regulator in the existing technology, it is necessary to first weld the fixed shaft assembly to the mold support plate, then install the stroke adjustment mechanism, insert cotter pins into the fixed shaft assembly to prevent the stroke adjustment mechanism from falling off, insert a round tube into the upper end of the stroke adjustment mechanism, and finally fix the angle position of the round tube with a round tube fixing short plate. The round tube fixing short plate also needs to be removed after the wind turbine blade mold is cured. Therefore, the overall processing procedure and installation process are complicated.

[0006] Secondly, there is the issue of connection reliability. In the existing technology, the regulator is subjected to force on one side, and the fixing pin in the fixed shaft assembly is easy to fall off after being subjected to force. The regulator obtained by this installation method is prone to wear, corrosion or jamming due to long-term exposure to harsh environments such as strong winds, rain, salt spray, and temperature differences. Furthermore, frequent adjustments may aggravate local stress concentration, leading to blade material fatigue. Therefore, the overall structural connection reliability and support stability are poor.

[0007] Third, there is the issue of cost. The old-style active regulator cannot use mature standard parts available on the market. The parts are difficult to process, and the overall manufacturing cost is relatively high. The regulator in the existing technology has to be removed after the wind turbine blade mold is cured due to the short plate of the round tube fixing, which increases the labor cost and efficiency cost of the mold.

[0008] Fourth, safety issues. In the existing technology, after the wind turbine blade mold is heated, the thermal expansion and contraction of the mold itself can easily cause the cotter pin at the cut end of the stroke adjustment mechanism to fall off from the fixed shaft assembly, which can easily lead to safety hazards. Utility Model Content

[0009] Purpose of the utility model: In order to overcome the shortcomings of the prior art, this utility model provides a wind turbine blade movable profile adjuster. This adjuster simplifies the installation process, solves the problem of unilateral force on the adjuster, eliminates the need to disassemble the adjuster after installation, and reduces manufacturing and labor costs.

[0010] Technical solution: In order to achieve the above objectives, this utility model provides a wind turbine blade movable profile adjuster, which includes: a hinge bolt, an extended nut, a reverse thread bolt, a channel steel, a boss cotter pin, a rectangular tube, a mold steel frame support plate, a bellows A and a bellows B;

[0011] One end of the reverse threaded bolt is fastened to the channel steel, and the other end of the reverse threaded bolt passes through the bellows A and is fixed together with the extended nut by threaded connection;

[0012] The rectangular tube is sleeved on one end of the hinge bolt so that the holes on the rectangular tube and the hinge bolt are in the same axial position. The cotter pin of the boss passes through the hole on the mold steel frame support plate and then passes through the holes on the rectangular tube and the hinge bolt in sequence.

[0013] The hinge bolt and rectangular tube are fixed to the mold steel frame support plate by the boss cotter pin. The other end of the hinge bolt passes through the bellows B and is fixed together with the extended nut by thread.

[0014] The threads on the hinge bolt and the reverse thread bolt are opposite in direction. The two ends of the extension nut are respectively provided with positive thread and reverse thread. By rotating the extension nut, the reverse thread bolt (3) and the hinge bolt (1) can move towards each other or relative to each other using their positive and reverse threads. Alternatively, the position of the extension nut can be fixed and the reverse thread bolt can be rotated to achieve the relative distance between the channel steel and the rectangular tube.

[0015] As a further preferred embodiment of this utility model, the heights of the bellows A and B are adjusted according to the application. After continuous operation of the hinge bolt and the reverse thread bolt, the bellows A and B will be subject to a certain degree of wear. The bellows A and B play a supporting and limiting role. When the bellows A and B are worn, only new bellows A and B need to be replaced. The bellows A and B will not interfere with the up and down movement of the hinge bolt and the reverse thread bolt.

[0016] Bellows A and Bellows B serve as soft limiters, facilitating the rapid assembly and spacing of the movable regulator. Once assembled onto the mold, they do not affect the regulator's up-and-down movement or left-and-right swinging, and can be completely removed after assembly.

[0017] As a further preferred embodiment of this utility model, the rectangular tube is welded together with the mold steel frame support plate. When the adjuster is installed on the mold, the through holes and markings provided by the mold steel frame support plate are used as position information. The mold steel frame support plate and the rectangular tube are rigidly connected together by welding on both sides, thereby ensuring that the rectangular tube and the mold steel frame are welded together and cannot move.

[0018] As a further preferred embodiment of this utility model, the diameter of the boss cotter pin is in transition fit with the hole on the mold steel frame support plate, thereby ensuring that the boss cotter pin passes smoothly through the hole on the mold steel frame support plate.

[0019] As a further preferred embodiment of the present invention, one end of the cotter pin is provided with a boss to restrict the cotter pin from passing through the mold steel frame support plate, and the cotter pin is provided with a pin hole.

[0020] As a further preferred embodiment of this utility model, a pin is provided in the pin hole, and the pin passes through the pin hole to prevent the cotter pin of the boss from sliding out of the rectangular tube.

[0021] As a further preferred embodiment of this utility model, the contact surface between the hinge bolt and the rectangular tube is a rotating surface, which allows the hinge bolt to swing within the rectangular tube at an angle of 10° to 15°.

[0022] As a further preferred embodiment of this utility model, the hinge bolt swings left and right within the rectangular tube with the cotter pin of the boss as the origin, in order to prevent the rigid connection on the adjuster from easily breaking when it is in the function of supporting and adjusting.

[0023] As a further preferred embodiment of this utility model, the external thread on the reverse thread bolt is adapted to the internal thread on the side of the extended nut near the reverse thread bolt, and the external thread on the hinge bolt is adapted to the internal thread on the side of the extended nut near the hinge bolt.

[0024] To position the round tube above the mold steel frame support plate and facilitate adjustment of the height of the round tube relative to the mold steel frame support plate, an adjuster is fixed to the mold steel frame support plate, and the round tube is inserted into the channel steel of the adjuster. By using a wrench to rotate the long nut counterclockwise or clockwise, the distance between the channel steel and the rectangular tube can be increased or decreased.

[0025] Beneficial effects: Compared with the prior art, the wind turbine blade movable profile adjuster of this utility model has the following advantages:

[0026] (1) By optimizing the structure of the regulator, the strength of the regulator is significantly improved, the structure is lighter, and since the pin is subjected to force on both sides at the same time, the regulator will not fail due to the pin breaking on one side.

[0027] (2) By using standard parts, non-standard customized structures are not required, which can greatly reduce material costs;

[0028] (3) By optimizing the structure of the regulator, the round tube can be placed directly at the opening of the regulator, which can save a lot of tube insertion time and avoid the use of the additional small fixing plate required in the existing technology, thus saving material and labor costs.

[0029] (4) Because the replacement of parts and maintenance are convenient in the later stage, it promotes market competitiveness and brings significant economic benefits and market advantages. Attached Figure Description

[0030] Figure 1 This is an exploded view of the present invention;

[0031] Figure 2 This is a full sectional view of the boss cotter pin.

[0032] Figure 3 This is a schematic diagram showing the extreme positions after the present invention has been installed. Detailed Implementation

[0033] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0034] The wind turbine blade movable profile adjuster of this utility model includes: a hinge bolt 1, an extended nut 2, a reverse thread bolt 3, a channel steel 4, a boss cotter pin 5, a rectangular tube 6, a mold steel frame support plate 7, a bellows A8, and a bellows B9, as shown. Figure 1 As shown;

[0035] One end of the reverse threaded bolt 3 is fastened to the channel steel 4, and the other end of the reverse threaded bolt 3 passes through the bellows A8 and is fixed together with the extended nut 2 by threaded connection. The rectangular tube 6 is sleeved on one end of the hinge bolt 1 so that the holes on the rectangular tube 6 and the hinge bolt 1 are in the same axial position. The boss cotter pin 5 passes through the hole on the mold steel frame support plate 7 and then passes through the holes on the rectangular tube 6 and the hinge bolt 1 in sequence. A pin is provided in the pin hole 51 at the tail of the boss cotter pin 5. The pin passes through the pin hole to prevent the boss cotter pin 5 from sliding out of the rectangular tube 6. Figure 2 As shown, the other end of the hinge bolt 1 passes through the bellows B9 and is fixed together with the extended nut 2 by a threaded connection. Example

[0036] Step 1: Weld the bottom of the channel steel 4 to the top of the reverse thread bolt 3. After the bottom of the reverse thread bolt 3 passes through the bellows A8, screw it into the top of the extension nut 2. After the swivel bolt 1 passes through the bellows B9, screw it into the bottom of the extension nut 2.

[0037] Step 2: Weld the rectangular tube 6 onto the mold steel frame support plate 7, so that the hole on the mold steel frame support plate 7 and the hole on the rectangular tube 6 are located on the same axis.

[0038] Step 3: After passing the bottom of the hinge bolt 1 through the rectangular tube 6, make the holes on the mold steel frame support plate 7, the rectangular tube 6 and the hinge bolt 1 in the same axial position. Then, pass one end of the boss cotter pin 5 through the holes on the mold steel frame support plate 7, the rectangular tube 6 and the hinge bolt 1 in sequence, so that the mold steel frame support plate 7, the rectangular tube 6 and the hinge bolt 1 are fastened together.

[0039] Step 4: The head of the boss cotter pin 5 is provided with a pin hole. The pin passes through the pin hole to restrict the boss cotter pin 5 from sliding out of the rectangular tube 6, so that the connection between the mold steel frame support plate 7, the rectangular tube 6 and the hinge bolt 1 is more secure.

[0040] Step 5: Place the round tube into the groove of the channel steel 4. When it is necessary to adjust the height of the channel steel 4 relative to the mold steel frame support plate 7,

[0041] The extended nut 2 has two types of threads: the upper half of the reverse thread is paired with the reverse thread bolt 3, and the lower half of the straight thread is connected to the straight thread of the hinge bolt 1.

[0042] When it is necessary to increase the distance between the channel steel 4 and the rectangular tube 6, use a wrench to rotate the extension nut 2 counterclockwise. The extension nut will push the reverse thread bolt 3 upward through the reverse thread and push the hinge bolt 1 downward through the positive thread, thus increasing the distance between the channel steel 4 and the rectangular tube 6.

[0043] When it is necessary to adjust the distance between the channel steel 4 and the rectangular tube 6 to be smaller, use a wrench to rotate the extension nut 2 clockwise. The extension nut will pull the reverse thread bolt 3 downward through the reverse thread and pull the hinge bolt 1 upward through the positive thread, thus adjusting the distance between the channel steel 4 and the rectangular tube 6 to be larger.

[0044] Under heavy loads on the regulator, to prevent the rigid connection of the regulator from breaking, the contact surface between the bottom of the hinge bolt 1 and the rectangular tube 6 is set as the rotation surface. The rotation surface at the bottom of the hinge bolt 1, with the cotter pin 5 as the origin, allows the hinge bolt 1 to swing left and right within the rectangular tube 6, with a swing angle range of 10°~15°. Figure 3 As shown, when the hinge bolt 1 tilts and swings inside the rectangular tube 6, it can remind the operator to check the equipment in time to prevent the rigid connection on the regulator from easily breaking when it is playing a supporting and adjusting role, thereby reducing safety hazards.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wind turbine blade active profile adjuster, characterised in that: It includes: hinged bolt (1), lengthening nut (2), reverse thread bolt (3), channel steel (4), boss split pin (5), rectangular tube (6), die steel frame support plate (7), corrugated pipe A (8) and corrugated pipe B (9); One end of the reverse thread bolt (3) is fastened with the channel steel (4), and the other end of the reverse thread bolt (3) is fixed together with the lengthening nut (2) through the thread after passing through the corrugated pipe A (8); The rectangular tube (6) is sleeved on one end of the hinged bolt (1) so that the rectangular tube (6) and the hole on the hinged bolt (1) are in the same axial position, and the boss split pin (5) passes through the hole on the die steel frame support plate (7) and then passes through the holes on the rectangular tube (6) and the hinged bolt (1) in turn; The hinged bolt (1) and the rectangular tube (6) are fixed on the die steel frame support plate (7) through the boss split pin (5), and the other end of the hinged bolt (1) is fixed together with the lengthening nut (2) through the thread after passing through the corrugated pipe B (9); The thread direction of the hinged bolt (1) and the reverse thread bolt (3) is opposite, the two ends of the lengthening nut (2) are respectively provided with a positive thread and a reverse thread, and by rotating the lengthening nut (2), the reverse thread bolt (3) and the hinged bolt (1) move towards or away from each other by using the positive and reverse threads, so that the relative distance between the channel steel (4) and the rectangular tube (6) is realized.

2. A wind turbine blade active fairing regulator according to claim 1, characterised in that: The height of the corrugated pipe A (8) and the corrugated pipe B (9) is adjusted according to the use occasion.

3. A wind turbine blade active fairing regulator according to claim 1, characterised in that: The rectangular tube (6) and the die steel frame support plate (7) are welded together.

4. A wind turbine blade active fairing regulator according to claim 1, characterised in that: The diameter of the boss split pin (5) is a transition fit with the hole on the die steel frame support plate (7).

5. A wind turbine blade active fairing regulator according to claim 4, characterised in that: One end of the boss split pin (5) is provided with a boss to limit the boss split pin (5) from passing through the die steel frame support plate (7), and the boss split pin (5) is provided with a pin hole (51) therein.

6. A wind turbine blade active fairing regulator according to claim 5, characterised in that: The pin hole (51) is provided with a pin, and the boss split pin (5) is limited from sliding out of the rectangular tube (6) by the pin passing through the pin hole.

7. A wind turbine blade active fairing regulator according to claim 1, characterized in that: The contact surface of the hinged bolt (1) and the rectangular tube (6) is a rotary surface.

8. A wind turbine blade active fairing regulator according to claim 7, characterised in that: The rotary surface makes the swing angle of the hinged bolt (1) in the rectangular tube (6) be 10°-15°.

9. A wind turbine blade active fairing regulator according to claim 1, characterized in that: The external thread provided on the reverse thread bolt (3) is matched with the internal thread provided on one side of the lengthening nut (2) close to the reverse thread bolt (3), and the external thread provided on the hinged bolt (1) is matched with the internal thread provided on one side of the lengthening nut (2) close to the hinged bolt (1).

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