Stable wind power generation tower structure

Abstract

The invention relates to the technical field of wind energy industry, and provides a stable wind power generation tower structure which comprises a power generation tower drum body, a second tower drum and fixing bolts, the second tower drum is installed at the top end of the power generation tower drum body, a power generation assembly is installed at the top end of the second tower drum, and stable structures are arranged on the inner walls of the power generation tower drum body and the second tower drum. The stabilizing structure comprises a fixing frame, the fixing frame is installed on the inner wall of the power generation tower drum body, and a first hinge base is installed in the top end of the fixing frame. Through the design of a stable structure, when the wind power generation tower shakes when encountering strong wind weather, firstly, a mounting plate can drive a piston in a damping air cylinder to move in the damping air cylinder, damping liquid in the damping air cylinder is extruded to pass through a small hole in the piston, the moving resistance of the piston is increased, and therefore vibration energy is consumed; and the shaking amplitude of the tower drum is reduced, so that stress at the joint is reduced, and preliminary damping is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of wind energy industry, and in particular to a stable wind power generation tower structure. Background Art

[0002] The wind energy industry revolves around the development of wind energy and is an important part of the new energy field. Wind power towers are used when utilizing wind energy. Wind power towers, also known as wind turbine towers, are an important part of wind turbine generator sets. They are usually composed of multiple sections of cylinders, each section of which is connected by flanges and bolts. They are mostly used in the construction of wind farms.

[0003] To this end, patent publication number CN217421441U discloses a wind turbine tower comprising a safety plate, a tower body, and blades disposed on the top of the tower body. The blades are provided with guide rails on their surfaces, and the safety plate is slidably connected to the guide rails. During operation, the operator is connected to the safety plate via a safety rope. This wind turbine tower can solve the problem of poor operator safety when manually cleaning wind turbine blades.

[0004] The above-mentioned existing technical solutions have the following defects: During the use of the above-mentioned technology, the operator is connected to the safety disk through a safety rope, and the wind power tower can solve the problem of poor operator safety when manually cleaning the wind turbine blades. However, when the wind power tower encounters strong winds, the strong wind will cause the tower to vibrate at high frequency, resulting in the bolts at the connection being subjected to shear and tensile stress for a long time, resulting in bolt loosening and fatigue fracture. The loosening of the bolts will cause the flange surface to fit less well, aggravate the vibration and damage the connection structure, and may even cause the tower to tilt or even collapse. Therefore, a stable wind power tower structure is needed to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a stable wind power tower structure to solve the problem that when encountering strong winds, the existing wind power tower will cause the tower to produce high-frequency vibrations, resulting in long-term shear and tensile stress on the bolts at the connection, causing bolt loosening and fatigue fracture. The loosening of bolts will lead to a decrease in the fit of the flange surface, aggravated vibration and damage to the connection structure, and may even cause the tower to tilt or even collapse.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a stable wind power tower structure, comprising a power generation tower body, a second tower and fixing bolts;

[0007] A second tower is installed at the top of the power generation tower body, a power generation assembly is installed at the top of the second tower, and a stabilizing structure is provided on the inner walls of the power generation tower body and the second tower;

[0008] The stabilizing structure includes a fixing frame, which is installed on the inner wall of the power tower body; a first hinged seat is installed inside the top of the fixing frame; a damping cylinder is hinged to the top of the first hinged seat; a piston is installed inside the damping cylinder; a second hinged frame is hinged to the top of the piston; a mounting plate is fixed to one end of the second hinged frame; the mounting plate is fixed to the inside of the second tower; fixing blocks are fixed on both sides of the fixing frame; a slider is installed inside the fixing block; one side of the slider is hinged to a connecting frame; one end of the connecting frame is hinged to a mounting block; one end of the mounting block is fixed to one end of the mounting plate.

[0009] Preferably, a first spring is fixed to the top end of the slider, a second spring is fixed to the bottom end of the slider, guide blocks are fixed to both sides of the slider, and guide grooves are provided on both sides of the fixed block.

[0010] Preferably, two groups of guide blocks are provided, and a guide connection is formed between the two groups of guide blocks and the guide grooves.

[0011] Preferably, the damping cylinders are provided in multiple groups, and the multiple groups of damping cylinders are symmetrically distributed in pairs inside the power generation tower body and the second tower.

[0012] Preferably, the top end of the first spring is fixed to the top end inside the fixed block, the bottom end of the second spring is fixed to the bottom end inside the fixed block, and a telescopic structure is formed between the first spring, the second spring and the slider.

[0013] Preferably, the power generation component includes a machine cavity, which is installed at the top of the second tower, with fan blades installed on one side of the machine cavity, a speed increaser installed at one end of the fan blade, and a generator installed at one end of the speed increaser.

[0014] Preferably, an auxiliary structure is provided at the connection between the power generation tower body and the second tower, the auxiliary structure comprising a first flange, the first flange being fixed to the bottom end inside the second tower, a second flange being fixed to the top end inside the power generation tower body, a wedge being installed at a middle position between the first flange and the second flange, a mounting groove being provided inside the top end of the power generation tower body, a retaining block being installed inside the mounting groove, a third spring being installed inside one side of the retaining block, one end of the third spring being fixed to one side of the mounting groove, an extrusion block being installed at the bottom end of the second tower, a positioning rod being installed at the bottom end of the second tower, a positioning groove being provided at the top end of the power generation tower body, and a fixing bolt being installed at the top end of the first flange.

[0015] Preferably, two groups of the third springs are provided on one side of the stop block, the two groups of the third springs are fixed to one side inside the installation slot, and a telescopic structure is formed between the third springs and the installation slot.

[0016] Preferably, the surface of the top end of the second flange is provided with an upward slope of °, and the surface of the bottom end of the first flange is provided with an opposite downward slope of °.

[0017] Preferably, the wedge blocks are provided in a plurality of groups, and the plurality of groups of wedge blocks are distributed in a ring shape at a middle position between the first flange and the second flange.

[0018] The present invention provides a stable wind power tower structure, which has the following advantages:

[0019] Through the design of a stable structure, when the wind turbine tower shakes in strong winds, the mounting plate will first drive the piston inside the damping cylinder to move inside the damping cylinder, squeezing the damping fluid inside through the small hole inside the piston, increasing the resistance to the piston's movement, thereby consuming vibration energy, reducing the tower's shaking amplitude, and thus reducing the force on the connection, completing the initial shock absorption:

[0020] Furthermore, when the mounting plate rocks to one side, it pulls the slider through the connecting frame to slide upward inside the fixed block. At this time, the first spring at the top of the slider is compressed, thereby consuming the vibration force again to complete the secondary vibration reduction work.

[0021] Furthermore, multiple groups of stabilizing structures are provided inside the main body of the power generation tower and the second tower, and the multiple groups of stabilizing structures are symmetrically distributed in pairs. When the tower shakes to one side, one group of pistons consumes the energy of the vibration by moving to one side inside the damping cylinder, and the other group of damping cylinders corresponding to this group of damping cylinders causes the pistons to move to the other side inside the damping cylinder to offset the vibration energy. The second spring and the first spring have the same function, both of which consume the energy of shock absorption through compression. Therefore, by setting up two groups of corresponding stabilizing structures, the vibration energy generated by the shaking can be damped multiple times, so that when the connection between the main body of the power generation tower and the second tower is in a strong wind environment, the connection is not easily damaged, thereby completing the reinforcement of the connection between the main body of the power generation tower and the second tower.

[0022] By providing an auxiliary structure, before assembling the power tower, the surface of the top of the second flange is machined into an upward slope of 50°, and the surface of the bottom of the first flange is machined into an opposite downward slope of 50°. The two surfaces of the wedge between the first and second flanges are sloped at the same angle. The material is mostly high-strength stainless steel or alloy. When the second tower is installed on the top of the power tower body, gravity presses on the wedge. At this time, the use of the wedge "decomposes" gravity into a horizontal thrust, allowing the upper and lower flange surfaces to fit tightly together as if being held down by a hand. The wedge slides along the inclined surface and "wedges" into the gap between the flange surfaces, generating horizontal thrust, similar to using a hammer to hammer in a wedge to fix a wooden board. The tower's gravity is equivalent to the "hammer pressure", and the wedge is the "wedge", converting gravity into a lateral clamping force to ensure a seamless fit between the flange surfaces. Traditional bolted connections require strict control of preload, such as using a hydraulic tensioner to tighten to the specified torque. The installation process is cumbersome and time-consuming. With this design, the bolts do not need to be tightened to the limit and the number of bolts can even be reduced. During installation, they only need to be fixed in position, greatly reducing the requirements for construction precision.

[0023] Furthermore, for example, a flange that originally required 10 high-strength bolts may only need 10 bolts to be positioned. The installation time can be shortened and the installation process can be simplified, thereby improving construction efficiency. In addition, the flange surface of the sloped structure can be automatically aligned by its own weight during hoisting, reducing manual adjustment steps. It is especially suitable for high-altitude operations such as tower top connection, reducing construction safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a rear-view three-dimensional structural schematic diagram of the present invention;

[0026] Figure 3 It is a schematic diagram of a partial cross-section of the three-dimensional structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the front cross-sectional three-dimensional structure of the present invention;

[0028] Figure 5 A schematic diagram of a three-dimensional structure of the stable structure of the present invention is shown;

[0029] Figure 6 A schematic diagram of a three-dimensional side view of the stable structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the rear three-dimensional structure of the stable structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the exploded three-dimensional structure of the stable structure of the present invention;

[0032] Figure 9This is a schematic diagram of the exploded three-dimensional structure of the stable structure of the present invention from a rear view;

[0033] Figure 10 This is a schematic diagram of a three-dimensional structure of the auxiliary structure of the present invention in a front view and section;

[0034] Figure 11 For the present invention Figure 10 A in the middle is a partial enlarged schematic diagram of the three-dimensional structure;

[0035] Figure 12 This is a schematic diagram of a three-dimensional structure of a partial explosion in the present invention;

[0036] Figure 13 This is a schematic diagram of a top view of a partially exploded three-dimensional structure of the present invention;

[0037] Figure 14 This is a schematic diagram of a partial exploded three-dimensional structure of the auxiliary structure of the present invention;

[0038] Figure 15 This is a schematic diagram of the exploded three-dimensional structure of the flange of the present invention;

[0039] Figure 16 This is a schematic diagram of the exploded three-dimensional structure of the flange of the present invention when viewed from above.

[0040] Explanation of the reference numerals in the figure: 1. Power generation tower body; 2. Second tower; 3. Power generation assembly; 301. Fan blade; 302. Machine cavity; 303. Speed increaser; 304. Generator; 4. Stabilizing structure; 401. Mounting plate; 402. Damping cylinder; 403. Fixing frame; 404. First hinge seat; 405. Fixing block; 406. First spring; 407. Sliding block; 408. Second spring; 409. Mounting block; 4010. Connecting frame; 4011. Second hinge frame; 4012. Piston; 4013. Guide block; 4014. Guide groove; 5. Auxiliary structure; 501. First flange; 502. Wedge block; 503. Second flange; 504. Abutment block; 505. Extrusion block; 506. Mounting groove; 507. Third spring; 6. Positioning rod; 7. Positioning groove; 8. Fixing bolt. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0042] See also Figures 1-16The present invention provides a stable wind power tower structure, which includes a power generation tower body 1, a second tower 2 and a fixing bolt 8; the second tower 2 is installed at the top of the power generation tower body 1, and the power generation component 3 is installed at the top of the second tower 2. A stable structure 4 is provided on the inner wall of the power generation tower body 1 and the second tower 2. The power generation component 3 includes a machine cavity 302, which is installed at the top of the second tower 2. A fan blade 301 is installed on one side of the machine cavity 302, a speed increaser 303 is installed at one end of the fan blade 301, and a generator 304 is installed at one end of the speed increaser 303.

[0043] An auxiliary structure 5 is provided at the connection between the power generation tower body 1 and the second tower 2. The auxiliary structure 5 includes a first flange 501, which is fixed to the bottom end of the second tower 2. A second flange 503 is fixed to the top of the power generation tower body 1. A wedge 502 is installed between the first flange 501 and the second flange 503. A mounting groove 506 is provided inside the top of the power generation tower body 1. A stop block 504 is installed inside the mounting groove 506. A third spring 507 is installed inside one side of the stop block 504. One end of the third spring 507 is fixed to one side of the mounting groove 506. An extrusion block 505 is installed at the bottom end of the second tower 2. , a positioning rod 6 is installed at the bottom end of the second tower 2, a positioning groove 7 is opened at the top of the power tower body 1, a fixing bolt 8 is installed at the top of the first flange 501, and two groups of third springs 507 are provided on one side of the block 504. The two groups of third springs 507 are fixed to one side of the inside of the mounting groove 506. A telescopic structure is formed between the third spring 507 and the mounting groove 506. The surface of the top of the second flange 503 is provided with a 15° upward slope, and the surface of the bottom end of the first flange 501 is provided with a 15° reverse downward slope. There are multiple groups of wedge blocks 502, and the multiple groups of wedge blocks 502 are distributed in a ring at the middle position of the first flange 501 and the second flange 503;

[0044] Reference Figures 10-16 As shown, in this embodiment, when assembling the power tower, the wedge 502 is first installed on the top of the second flange 503. After the installation is completed, the second tower 2 is hoisted on the top of the power tower body 1 by a crane. When installing the second tower 2, the positioning rod 6 is aligned with the positioning groove 7 and inserted therein, thereby completing the assembly of the power tower body 1 and the second tower 2. At this time, the positioning rod 6 and the positioning groove 7 are used in conjunction to guide the second tower 2 when installing it, so that the position of the second tower 2 is more accurate when installing it.

[0045] When the second tower 2 is installed at the top of the power tower body 1, the first flange 501 will first squeeze the wedge block 502, so that the wedge block 502 is installed in the middle position between the first flange 501 and the second flange 503, and when the second tower 2 is installed at the top of the power tower body 1, the squeezing block 505 at the bottom end of the second tower 2 will be inserted into the inside of the installation groove 506. Since the bottom end of the squeezing block 505 and the top end of the stop block 504 are provided with matching slopes, when the squeezing block 505 moves downward, it will squeeze and push the stop block 504 to move to one side. When the second tower 2 is installed, the squeezing block 505 will squeeze one side of the stop block 504 against one side of the wedge block 502 to complete the limitation of the wedge block 502. When processing the second flange 503, the surface of the top end of the second flange 503 is processed into a 15° upward slope, and the surface of the bottom end of the first flange 501 is processed into a 15° reverse downward slope. The two sides of the wedge 502 between the first flange 501 and the second flange 503 are slopes at the same angle, and the material is mostly high-strength stainless steel or alloy. When the second tower 2 is installed at the top of the power tower body 1, gravity presses on the wedge 502. At this time, the wedge 502 "decomposes" the gravity into horizontal thrust, allowing the upper and lower flange surfaces to fit tightly together as if they were pressed by hands. The wedge 502 slides along the inclined surface and "wedged" into the gap between the flange surfaces, generating horizontal thrust, similar to using a hammer to knock in a wedge to fix a wooden board. The gravity of the tower is equivalent to the "pressure of the hammer", and the wedge 502 is equivalent to a "wedge", which converts gravity into a lateral clamping force to make the flange surfaces fit seamlessly. Traditional bolt connections require strict control of the pre-tightening force, such as using a hydraulic tensioner to tighten to the specified torque. The installation process is cumbersome and time-consuming. Through this design, the bolts do not need to be tightened to the limit, and even the number is reduced. During installation, it only needs to be fixed in position, which greatly reduces the requirements for construction accuracy. For example, a flange that originally required 20 high-strength bolts may only require 8 bolts for positioning, shortening the installation time and simplifying the installation process, thereby improving construction efficiency. In addition, the flange surface of the sloped structure can be automatically aligned by its own weight during hoisting, reducing manual adjustment steps. This is especially suitable for high-altitude operations such as tower top connections, reducing construction safety risks.

[0046] The stabilizing structure 4 includes a fixing frame 403, which is mounted on the inner wall of the power tower body 1. A first hinged seat 404 is installed inside the top of the fixing frame 403. The top of the first hinged seat 404 is hinged with a damping cylinder 402. A piston 4012 is installed inside the damping cylinder 402. The top of the piston 4012 is hinged with a second hinged frame 4011. One end of the second hinged frame 4011 is fixed with a mounting plate 401. The mounting plate 401 is fixed to the inside of the second tower 2. Fixed blocks 405 are fixed on both sides of the fixing frame 403. A slider 407 is installed inside the fixing block 405. One side of the slider 407 is hinged with a connecting frame 4010. One end of the connecting frame 4010 is hinged with a mounting block 409. One end of the mounting block 409 is hinged with the mounting plate 4011. 1 is fixed, a first spring 406 is fixed to the top of the slider 407, a second spring 408 is fixed to the bottom of the slider 407, guide blocks 4013 are fixed on both sides of the slider 407, guide grooves 4014 are opened on both sides of the fixed block 405, two groups of guide blocks 4013 are provided, and a guiding connection is formed between the two groups of guide blocks 4013 and the guide grooves 4014, multiple groups of damping cylinders 402 are provided, and the multiple groups of damping cylinders 402 are symmetrically distributed in pairs inside the power generation tower body 1 and the second tower 2, the top of the first spring 406 is fixed to the top of the fixed block 405, the bottom end of the second spring 408 is fixed to the bottom of the fixed block 405, and a telescopic structure is formed between the first spring 406, the second spring 408 and the slider 407;

[0047] Reference Figures 1-9As shown, when the wind turbine is generating electricity, it can generate electricity by using the power generation assembly 3 and the accessories required for power generation installed inside the tower. When the wind turbine shakes in strong wind weather, when the second tower 2 is blown to one side by the strong wind, the mounting plate 401 will first drive the piston 4012 inside the damping cylinder 402 to move inside the damping cylinder 402. When the piston 4012 moves, it will squeeze the damping fluid inside it through the small hole inside the piston 4012, increasing the resistance to the movement of the piston 4012, thereby consuming vibration energy, reducing the shaking amplitude of the tower, thereby reducing the force on the connection, and completing preliminary shock absorption. When the mounting plate 401 shakes to one side, it will also pull the slider 407 to slide upward inside the fixed block 405 through the connecting frame 4010. At this time, the first spring 406 at the top of the slider 407 is compressed, thereby consuming the force of the vibration and completing the process of vibration reduction. The vibration reduction work is performed multiple times. The stabilizing structure 4 is arranged inside the power tower body 1 and the second tower 2, and the multiple stabilizing structures 4 are symmetrically distributed in pairs. When the tower shakes to one side, one group of pistons 4012 consumes the energy of the vibration by moving to one side inside the damping cylinder 402. The other group of damping cylinders 402 corresponding to this group of damping cylinders 402 will make the pistons 4012 move to the other side inside the damping cylinder 402 to also consume it. The functions of the second spring 408 and the first spring 406 are the same. Both consume the energy of the shock absorption by compression. Therefore, the setting of the two groups of corresponding stabilizing structures 4 can perform multiple shock absorption work on the vibration energy generated by the shaking, so that when the connection between the power tower body 1 and the second tower 2 is in a strong wind environment, the connection is not easily damaged, thereby completing the reinforcement work of the connection between the power tower body 1 and the second tower 2.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A stable wind power tower structure, characterized by: It comprises a power generation tower main body (1), a second tower (2) and fixing bolts (8); A second tower (2) is installed at the top of the power generation tower main body (1), a power generation assembly (3) is installed at the top of the second tower (2), and a stabilizing structure (4) is provided on the inner walls of the power generation tower main body (1) and the second tower (2); The stabilizing structure (4) comprises a fixing frame (403), the fixing frame (403) being mounted on the inner wall of the power tower body (1), a first hinged seat (404) being mounted inside the top end of the fixing frame (403), a damping cylinder (402) being hinged to the top end of the first hinged seat (404), a piston (4012) being mounted inside the damping cylinder (402), a second hinged frame (4011) being hinged to the top end of the piston (4012), and the second hinged frame (4011) being hinged to the top end of the second hinged frame (4011). ) is fixed with a mounting plate (401) at one end thereof, the mounting plate (401) being fixed to the inside of the second tower (2), fixing blocks (405) being fixed on both sides of the fixing frame (403), a slider (407) being installed inside the fixing block (405), a connecting frame (4010) being hingedly connected to one side of the slider (407), a mounting block (409) being hingedly connected to one end of the connecting frame (4010), and one end of the mounting block (409) being fixed to one end of the mounting plate (401).

2. A stable wind power tower structure according to claim 1, characterized in that: A first spring (406) is fixed to the top of the slider (407), a second spring (408) is fixed to the bottom of the slider (407), guide blocks (4013) are fixed on both sides of the slider (407), and guide grooves (4014) are provided on both sides of the interior of the fixed block (405).

3. The stable wind power tower structure according to claim 2, characterized in that: The guide blocks (4013) are provided in two groups, and a guide connection is formed between the two groups of guide blocks (4013) and the guide grooves (4014).

4. The stable wind power tower structure according to claim 1, characterized in that: The damping cylinders (402) are provided in multiple groups, and the multiple groups of damping cylinders (402) are symmetrically distributed in pairs inside the power generation tower main body (1) and the second tower (2).

5. The stable wind power tower structure according to claim 2, characterized in that: The top end of the first spring (406) is fixed to the top end inside the fixed block (405), and the bottom end of the second spring (408) is fixed to the bottom end inside the fixed block (405). A telescopic structure is formed between the first spring (406), the second spring (408) and the slider (407).

6. The stable wind power tower structure according to claim 1, characterized in that: The power generation assembly (3) comprises a machine cavity (302), the machine cavity (302) being mounted on the top of the second tower (2), a fan blade (301) being mounted on one side of the machine cavity (302), a speed increaser (303) being mounted on one end of the fan blade (301), and a generator (304) being mounted on one end of the speed increaser (303).

7. The stable wind power tower structure according to claim 1, characterized in that: An auxiliary structure (5) is provided at the connection between the power generation tower main body (1) and the second tower (2), and the auxiliary structure (5) includes a first flange (501), the first flange (501) is fixed to the bottom end inside the second tower (2), a second flange (503) is fixed to the top end inside the power generation tower main body (1), a wedge (502) is installed at the middle position between the first flange (501) and the second flange (503), and a mounting groove (506) is provided inside the top end of the power generation tower main body (1). A stop block (504) is installed inside the installation groove (506), a third spring (507) is installed inside one side of the stop block (504), one end of the third spring (507) is fixed to one side of the installation groove (506), an extrusion block (505) is installed at the bottom end of the second tower (2), a positioning rod (6) is installed at the bottom end of the second tower (2), a positioning groove (7) is provided at the top end of the power generation tower body (1), and a fixing bolt (8) is installed at the top end of the first flange (501).

8. The stable wind power tower structure according to claim 7, characterized in that: Two groups of the third springs (507) are provided on one side of the stop block (504), and the two groups of the third springs (507) are fixed to one side inside the mounting groove (506), and a telescopic structure is formed between the third springs (507) and the mounting groove (506).

9. The stable wind power tower structure according to claim 7, characterized in that: The surface of the top end of the second flange (503) is provided with an upward slope of 15°, and the surface of the bottom end of the first flange (501) is provided with an opposite downward slope of 15°.

10. The stable wind power tower structure according to claim 7, characterized in that: The wedge blocks (502) are provided in multiple groups, and the multiple groups of wedge blocks (502) are distributed in a ring shape at the middle position between the first flange (501) and the second flange (503).

Images