A horizontal omnidirectional adaptive inertial capacitance damping system and a biomimetic wind turbine tower

Abstract

This invention discloses a horizontal omnidirectional adaptive inertial capacitance damping system and a biomimetic wind turbine tower. The damping system includes several mass blocks, with a sleeve fixed below each mass block. Guide rods are paired and slide relative to the sleeve at both ends. The outer ends of the two guide rods slide on a first circular slide rail on the inner wall of the wind turbine tower. A disc spring is fitted on the outer side of the sleeve, and the inner end of the spring is linked by a first gear transmission unit connected to a first inertial capacitance flywheel located inside the sleeve. A second gear and rack transmission unit perpendicular to the guide rods is located above the mass blocks. A bracket perpendicular to the guide rods is located below the sleeve, sliding on a second circular slide rail on the inner wall of the wind turbine tower. The sleeve slides on the bracket. The second gear and rack transmission unit is connected to the second inertial capacitance flywheel located on the bracket. This invention can improve the adaptability and damping efficiency of highly flexible wind turbine towers to complex multidirectional wind-induced and seismic vibrations.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology for engineering structures, and in particular to a horizontal omnidirectional adaptive inertial capacitance vibration reduction system and a biomimetic wind turbine tower. Background Technology

[0002] Energy infrastructure occupies a core position in the new infrastructure initiative. Wind power, as a primary energy source, is increasingly moving towards larger scales. The increase in single-unit capacity places new demands on tower height, leading to a decrease in the natural frequency of the tower structure, making it highly susceptible to resonance with wind loads and earthquakes. Increasing material usage to dissipate energy through the structure itself is not only uneconomical but may also alter the structure's dynamic characteristics, making it prone to fatigue damage, concrete cracking, and even overall instability under extreme loads. Existing tuned mass damper vibration reduction technology suffers from drawbacks such as sensitivity to frequency and wind direction, and high maintenance costs in remote areas. Summary of the Invention

[0003] Purpose of the invention: The present invention aims to provide a horizontal omnidirectional adaptive inertial capacitance vibration reduction system that can improve the adaptability and vibration reduction efficiency of highly flexible wind turbine towers to complex multidirectional wind-induced and seismic vibrations, and reduce structural fatigue damage and maintenance costs. Another purpose of the present invention is to provide a biomimetic wind turbine tower.

[0004] Technical Solution: The present invention discloses a horizontal omnidirectional adaptive inertial capacitance damping system, comprising several parallel mass blocks, several first inertial capacitance mechanisms connected to each mass block along a parallel direction, and second inertial capacitance mechanisms connected to the mass blocks along a direction orthogonal to the parallel direction. The first inertial capacitance mechanism includes a sleeve fixed below the mass blocks and a pair of guide rods disposed at both ends of the sleeve and sliding relative to the sleeve. Disc springs are fitted onto the outer portions of the two guide rods, which are positioned between the outer protrusion of the guide rod and the outer wall of the sleeve. The outer ends of the guide rods are slidably mounted on a first circular slide rail on the inner wall of the wind turbine tower. The ends of the two guide rods located inside the sleeve are linked by a first gear transmission unit, which is connected to a first inertial capacitance flywheel located inside the sleeve. The second inertial capacitance mechanism includes a bracket perpendicular to the direction of the guide rods. The bracket is slidably mounted on a second circular slide rail on the inner wall of the wind turbine tower. The mass blocks and the sleeve are slidably mounted on the bracket. A second gear and rack transmission unit connected to the mass blocks is connected to a second inertial capacitance flywheel located on the bracket.

[0005] Preferably, the first gear transmission unit includes at least two first racks disposed at one end of one of the guide rods and at least one second rack disposed at one end of the other guide rod. The first racks and the second racks are respectively interlocked and connected by meshing with a first gear. The first gear and the first inertial flywheel are coaxially connected.

[0006] Preferably, the second gear transmission unit includes a third rack connected to a connecting rod disposed above all the mass blocks and a second gear coaxially connected to the second inertial flywheel, wherein the third rack and the second gear are meshed together.

[0007] Preferably, the disc spring is a variable stiffness disc spring assembly.

[0008] Preferably, the sleeve is mounted on the bracket via a sliding limiting rod; the bracket has horizontal elongated holes on two opposite sides along its length, and the sleeve has through holes on the corresponding sides; the sliding limiting rod passes through the through holes on the side of the sleeve and the elongated holes on the bracket and is slidably connected to the bracket.

[0009] The present invention provides a biomimetic wind turbine tower, comprising the aforementioned horizontal omnidirectional adaptive inertial capacitance damping system, wherein the damping system is located at the top of the wind turbine tower and / or at the connection between tower unit sections.

[0010] Preferably, it also includes multiple coaxial conical tower units, which are connected by a self-resetting connection assembly.

[0011] Preferably, the tower unit comprises a biomimetic steel tube bundle consisting of an outer steel tube, an inner steel tube, and several core tubes. The outer steel tube and the inner steel tube are coaxially sleeved, and the several core tubes are evenly distributed between the outer steel tube and the inner steel tube. The space between the outer steel tube and the inner steel tube, as well as the interior of the biomimetic steel tube bundle, is uniformly filled with concrete.

[0012] Preferably, the self-resetting connection assembly includes an annular plate, a variable friction connection plate, and a self-resetting bolt washer. The annular plate is disposed on the connection end face of adjacent tower units, and the inner side is connected by bolts and the self-resetting bolt washer, while the outer side of the tower units is connected by the variable friction connection plate.

[0013] Preferably, the variable friction connecting plate includes a first friction plate and a second friction plate; the first friction plates are arranged in pairs and are respectively located at the connection points on the outer sides of adjacent tower units; the second friction plate is connected to a pair of first friction plates; and a plurality of mutually cooperating friction keys are provided on the opposite side of the first and second friction plates.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. The horizontal omnidirectional adaptive inertial capacitance damping system of the present invention can be activated in any direction in the horizontal plane, reducing the sensitivity of the damping system to wind direction and frequency; and when moving in any direction, it can drive the inertial capacitance flywheel to rotate at high speed through the guide rod and rack, increasing the apparent mass of the damping system and generating huge inertial force feedback to the tower, greatly reducing the need for counterweight of the damping system; at the same time, it reduces structural fatigue damage and maintenance costs; 2. The biomimetic tower unit mainly bears unidirectional tensile, compressive and shear stresses by the outer steel pipe, and forms a porous structure by discrete steel pipe bundles and inner steel pipes together with lightweight concrete, which can bear complex stresses in multiple directions and have energy absorption effect, while reducing the weight of the tower, so that the wind power tower has lightweight, high strength and high toughness mechanical properties. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the tower unit structure of the present invention;

[0017] Figure 3 This is a cross-sectional view of the tower unit of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the self-resetting connection assembly of the present invention;

[0019] Figure 5 This is a schematic diagram of the self-resetting bolt washer structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the variable friction connecting plate structure of the present invention; wherein, (a) is the first friction plate and (b) is the second friction plate;

[0021] Figure 7 This is a schematic diagram of the horizontal omnidirectional adaptive inertial-capacitive damping system of the present invention;

[0022] Figure 8 This is a cross-sectional view of the first inertial capacitive mechanism of the present invention;

[0023] Figure 9 This is a cross-sectional view of the second inertial capacitive mechanism of the present invention;

[0024] Figure 10 This is a schematic diagram of the variable stiffness disc spring assembly structure of the present invention;

[0025] Figure 11 This is a force analysis diagram of the omnidirectional adaptive inertial-capacitive damping system of the present invention.

[0026] In the diagram: 1. Tower unit; 1-1. Outer steel pipe; 1-2. Inner steel pipe; 1-2a. First stiffening rib; 1-3. Core tube; 1-3a. Second stiffening rib; 1-4. Lightweight concrete; 2. Self-resetting connection assembly; 2-1. Annular plate; 2-1a. First annular plate; 2-1b. Second annular plate; 2-2. Self-resetting bolt washer; 2-2a. Cover plate; 2-2b. Base; 2-3. Variable friction connection plate; 2-3a. First friction plate; 2-3b. Second friction plate; 3. Distributed inertial-capacitance tuned mass damping system; 3-1. Mass block; 3- 2. Sleeve; 3-3. Guide rod; 3-3a. First rack; 3-3b. Second rack; 3-4. First inertia flywheel; 3-5. First gear; 3-6. Second inertia flywheel; 3-7. Second gear; 3-8. Third rack; 3-9. Variable stiffness disc spring assembly; 3-9a. Thin or standard disc spring; 3-9b. Thick or reinforced disc spring; 3-9c. Spacer; 3-10. Roller; 3-10a. First circular slide rail; 3-11. Sliding limit rod; 3-12. Bracket; 3-12a. Second circular slide rail; 3-13. Connecting rod. Detailed Implementation

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0028] like Figure 1 and 7 As shown in Figure -11, the horizontal omnidirectional adaptive inertial capacitance damping system of the present invention is a distributed inertial capacitance tuned mass damping system 3, located at the top of the wind turbine tower and / or at the connection between tower unit 1 sections. It includes several parallel mass blocks 3-1, several parallel first inertial capacitance mechanisms connected to each mass block along parallel directions, and second inertial capacitance mechanisms connected to the mass blocks along directions orthogonal to the parallel directions. Each first inertial capacitance mechanism includes a sleeve 3-2 fixed below the mass block and a pair of guide rods 3-3 positioned opposite each other at both ends of the sleeve. The two guide rods can slide relative to the sleeve. Rollers 3-10 are provided at the outer ends of the two guide rods and are connected to a first circular slide rail 3-10a located on the inner wall of the tower. The two guide rods are each equipped with at least two first racks 3-3a and at least one second rack 3-3b at their respective ends within the sleeve. The first racks 3-3a and 3-3b are interlocked and connected via a first gear 3-5. The first gear 3-5 and a first inertial displacement flywheel 3-4 located within the sleeve 3-2 are coaxially connected, converting the linear motion of the guide rods into rotational motion of the first gear 3-5 and the first inertial displacement flywheel 3-4, facilitating motion transmission and inertial energy storage. Disc springs are provided on the portions of the two guide rods outside the sleeve. These disc springs are fitted between the outer protrusion of the guide rod and the outer wall of the sleeve, compressing or rebounding as the mass block and sleeve slide. The first inertial displacement mechanism is symmetrical along the axis of the guide rods.

[0029] Preferably, one of the guide rods is provided with two first racks 3-3a at one end inside the sleeve, and the other guide rod is provided with a second rack 3-3b at one end inside the sleeve. The two first racks 3-3a and the second rack 3-3b are respectively meshed through two first gears 3-5, and each first gear 3-5 is coaxially connected to a first inertial flywheel 3-4.

[0030] Preferably, the disc spring is a variable stiffness disc spring assembly 3-9. To achieve a phased gradually stiffening stiffness characteristic, the variable stiffness disc spring assembly 3-9 is assembled as follows: multiple disc spring plates with the same inner diameter but different thicknesses, outer diameters, and tapers are selected and coaxially stacked according to a predetermined combination sequence and direction. Specifically, thin or standard disc springs 3-9a with lower stiffness and a larger allowable deformation are placed at both ends of the spring assembly, and thick or reinforced disc springs 3-9b with higher stiffness and greater load-bearing capacity are placed in the middle of the spring assembly. Spacers 3-9c can be set between each group of disc springs to control the initial gap and interaction relationship, such as... Figure 10 As shown. During assembly, an initial preload is applied to ensure that each layer of disc springs is in a partially compressed, close-contact state from the initial stage. When this variable stiffness disc spring assembly 3-9 is compressed, the thin or standard disc spring 3-9a deforms first, providing a flexible initial stiffness stage. As the displacement increases, the thin or standard disc spring 3-9a gradually compacts, while the thick or reinforced disc spring 3-9b begins to dominate the load-bearing capacity, significantly increasing the stiffness and achieving a smooth transition of phased, gradually hardening stiffness characteristics. This assembly method allows for precise design of the stiffness curve's inflection point and amplitude by adjusting the disc spring parameters, stacking sequence, and preload to meet the performance requirements of different vibration damping stages.

[0031] The second inertial capacity mechanism includes a bracket 3-12 perpendicular to the direction of the guide rod 3-3 and a third rack 3-8. The bracket 3-12 is located below the sleeve 3-2 and has rollers at its bottom, which are slidably connected to the second circular slide rail 3-12a on the tower unit. The mass block 3-1 is mounted on the bracket 3-12 along the sleeve 3-2 via a sliding limit rod 3-11. The bracket 3-12 has horizontal elongated holes on two opposite sides along its length, and the sleeve 3-2 has through holes on the corresponding sides. The sliding limit rod 3-11 passes through the through holes on the side of the sleeve 3-2 and the elongated holes of the bracket 3-12 and is slidably connected to the bracket. The third rack 3-8 is located on the connecting rod 3-13 above each mass block 3-1. The third rack 3-8 meshes with the second gear 3-7, which is coaxially connected with the second inertial capacity flywheel 3-6. The second inertial capacity flywheel is located on the bracket 3-12, as shown below. Figure 9 As shown.

[0032] Preferably, the tower unit has a gradient from the outside to the inside, the first circular slide rail 3-10a is provided on the side of the inner steel pipe, and the second circular slide rail 3-12a is provided on the upper part of the second annular plate (2-1b) welded to the top of the tower unit.

[0033] The horizontal omnidirectional adaptive inertial capacitance damping system described in this invention achieves highly adaptable, efficient, and low-weight damping control for the complex multidirectional vibrations of highly flexible wind turbine towers by organically combining omnidirectional track guidance, two-stage orthogonal inertial capacitance coordination, and variable stiffness springs. Figure 11 As shown, the specific working principle and advantages are as follows:

[0034] (1) Omnidirectional adaptive start-up: When the wind turbine tower vibrates under the action of wind load F(t) in any direction, the mass block 3-1 installed on the two circular slide rails can slide freely along the tangent direction of the slide rails under the drive of inertial force, ensuring that the system can start up immediately and participate in vibration reduction under any wind direction.

[0035] (2) Two-stage inertial-capacitance synergistic effect: The sliding motion of mass block 3-1 can be decomposed into two mutually orthogonal components:

[0036] A. Component along the axial direction of guide rod 3-3: The guide rod compresses the variable stiffness disc spring assembly 3-9 and drives the first gear and rack transmission unit, i.e., the first rack 3-3a and the second rack 3-3b drive the first gear 3-5 to rotate, thereby driving the first inertial displacement flywheel 3-4 to rotate at high speed, generating the first inertial displacement force. f in1 .

[0037] B. Component perpendicular to the guide rod axis (i.e., along the sliding direction of bracket 3-12): Drives the second gear and rack transmission unit through connecting rod 3-13 and third rack 3-8, causing the second inertial displacement flywheel 3-6 to rotate at high speed, generating the second inertial displacement force. f in2 .

[0038] Therefore, regardless of wind direction, the sliding of the mass block can always simultaneously and proportionally excite two orthogonally arranged inertial capacities, forming a cooperative two-stage inertial capacities. Total inertial capacities f in = f in1 + f in2 .

[0039] (3) Achieving low-weight and high-efficiency vibration reduction: The total inertial force generated by the high-speed rotation of the two inertial fluid flywheels is fed back to the tower structure through the transmission mechanism, achieving a vibration reduction effect similar to increasing the counterweight of mass block 3-1. Under the premise of achieving the same vibration reduction performance, the present invention can significantly reduce the actual required counterweight of mass block, thereby reducing the additional load on the tower structure and solving the problems of high counterweight requirements and difficulty in arranging traditional tuned mass dampers at the top of the tower.

[0040] (4) Stiffness and damping synergy: The variable stiffness disc spring group 3-9 provides nonlinear restoring force, and together with the system damping, it works with the inertial capacitive force to consume vibration energy, effectively suppressing the dynamic response of the tower and broadening the vibration reduction frequency band.

[0041] This invention utilizes two capacitive inertial mechanisms, employing differentiated transmission paths and mechanical roles to achieve synergistic effects, thereby enhancing the system's vibration damping performance and adaptability. Its beneficial effects are primarily reflected in the following aspects: First, it achieves graded capacitive inertia, increasing energy absorption capacity. The first capacitive flywheel 3-4 directly responds to the lateral displacement component of the sliding mass block through the guide rod 3-3 and the rack and pinion mechanism, while the second capacitive flywheel 3-6 responds to the inertial component of the motion direction through the connecting rod 3-13 and the third rack 3-8, forming a two-stage capacitive mechanism of "local response + overall response," expanding the range of kinetic energy that the system can store and convert. Second, it enhances system robustness and adapts to wide-frequency vibrations. The two capacitive inertial mechanisms have different dynamic response characteristics, allowing them to operate efficiently in local high-frequency and overall low-frequency ranges respectively, maintaining capacitive effects across a wide frequency band. Third, it reduces actual counterweight requirements. The dual capacitive mechanisms synergistically generate greater apparent inertial force, achieving excellent vibration damping without significantly increasing the actual mass, thus reducing the additional load on the tower structure. Fourth, it enhances omnidirectional adaptive capability. Two inertial capacitive mechanisms respond to motion components in different directions, ensuring efficient system startup under any wind direction. In terms of synergy, they complement each other through complementary mechanical paths, staggered temporal responses, superposition of inertial capacitive forces, and stiffness coupling with the composite disc spring, forming a triple synergistic mechanism of stiffness-inertial capacitive-damping. This not only smooths the output of inertial capacitive forces and suppresses excessive displacement but also significantly broadens the system's effective vibration reduction frequency band, enhancing its adaptability to different wind conditions. The dual inertial capacitive mechanism design enables the system to construct a multi-level, multi-path, adaptively coupled inertial capacitive network, achieving low-weight, high-efficiency, and omnidirectional adaptive control of the three-dimensional vibration of the wind turbine tower.

[0042] The wind turbine tower includes multiple coaxial conical tower units connected by a self-resetting connection assembly, and a horizontal omnidirectional adaptive inertial capacitance damping system located at the top of the tower or at the connection between tower unit sections.

[0043] The tower unit 1 comprises a biomimetic steel tube bundle consisting of an outer steel tube 1-1, an inner steel tube 1-2, and several core tubes 1-3. The core tubes are preferably steel tubes. The outer steel tube 1-1 and the inner steel tube 1-2 are coaxially sleeved, and several core tubes 1-3 are evenly distributed between the outer steel tube 1-1 and the inner steel tube 1-2. These three components constitute the main load-bearing framework, such as... Figure 2-3 As shown. The inner steel tube 1-2 has several first stiffening ribs 1-2a axially arranged on its inner wall to prevent inward buckling, and these first stiffening ribs 1-2a are radially distributed around the inner wall of the inner steel tube. The outer wall of the core tube 1-3 at its end connection point is provided with second stiffening ribs 1-3a to facilitate end connection.

[0044] The space between the outer steel tube 1-1 and the inner steel tube 1-2, as well as the interior of the biomimetic steel tube bundle, is uniformly filled with concrete, preferably lightweight concrete. The outer steel tube 1-1 provides strong and uniform circumferential restraint to the biomimetic steel tube bundle and the lightweight concrete 1-4, while the lightweight concrete 1-4 provides support and energy absorption, effectively transferring the load between the steel tubes. Under horizontal loads, the "column group effect" of the biomimetic steel tube bundle weakens the influence of the shear force transfer path between the steel tubes, allowing the inner steel tubes to focus more on bearing axial forces. Furthermore, since the biomimetic steel tube bundle contains multiple independent core tubes 1-3, even if a core tube 1-3 yields first due to defects or local buckles, the load can be redistributed to the other core tubes and the restraining concrete through the concrete, avoiding sudden brittle failure.

[0045] The self-resetting connection assembly 2 is used to connect adjacent tower units 1, and includes an annular plate 2-1, a self-resetting bolt washer 2-2, and a variable friction connection plate 2-3, as shown below. Figure 4 As shown.

[0046] The annular plate 2-1 includes a first annular plate 2-1a and a second annular plate 2-1b. The first annular plate 2-1a is located at the bottom of the previous tower unit 1 and is welded integrally with the ends of the outer steel pipe 1-1 and the inner steel pipe 1-2. Simultaneously, the biomimetic steel pipe bundle is fixedly connected to the first annular plate 2-1a by a second stiffening rib 1-3a. The second annular steel plate 2-1b is welded to the top of the outer steel pipe 1-1 and the inner steel pipe 1-2 in the next tower unit. Preferably, the annular plate is made of steel.

[0047] The inner circumference of the annular plate 2-1 is connected by several evenly distributed self-resetting bolt washers 2-2 and bolts, forming a stiffness-enhancing zone at the tower unit section, effectively suppressing local buckling of the outer steel pipe 1-1 and inner steel pipe 1-2, and serving as an installation platform for the vibration damping system. The self-resetting bolt washers 2-2 include a fitted cover plate 2-2a and a base 2-2b, arranged in pairs and capable of relative sliding. The bolts pass through the first annular plate 2-1a, the second annular plate 2-1b, and the mating cover plate 2-2a and base 2-2b, and are then tightened with nuts to achieve the connection of the annular plates. The contact areas of the cover plate 2-2a and the base 2-2b each contain a slope structure that provides self-resetting force, preferably a slope boss and a slope groove, such as... Figure 5 As shown.

[0048] The variable friction connecting plate 2-3 includes a first friction plate 2-3a and a second friction plate 2-3b. The first friction plates 2-3a are arranged in pairs, respectively located at the connection points on the outer sides of the outer steel pipes of adjacent tower units, and each has multiple bolt holes. The second friction plate 2-3b covers the two first friction plates 2-3a and has multiple slotted holes, facilitating bolts to pass through and be fixed in the bolt holes without affecting the relative deformation of the first and second friction plates 2-3a and 2-3b. Multiple mating friction keys are provided on opposite sides of the first and second friction plates 2-3a and 2-3b, each containing a sloped structure that provides self-resetting force, preferably a toothed joint, such as... Figure 6 As shown.

[0049] The connection between adjacent tower units 1 includes external and internal connections. The external connection is achieved by connecting the outer steel pipes 1-1 of adjacent tower units through variable friction connecting plates 2-3. The internal connection is achieved by connecting the inner circumference of the second annular plate 2-1b of the lower tower unit and the first annular plate 2-1a of the upper tower unit through bolts and self-resetting bolt washers. When tower unit 1 is subjected to a horizontal load, the self-resetting bolt washers 2-2 are compressed, and the slope structure of the cover plate 2-2a and the base 2-2b can achieve reset and frictional energy dissipation. The first friction plates 2-3a are arranged in pairs and welded to the ends of the outer steel pipes 1-1 of adjacent tower units. The second friction plate 2-3b is located outside the first friction plate 2-3a and is connected to the first friction plate 2-3a through bolts and self-resetting bolt washers 2-2 after toothed engagement. After the first friction plate 2-3a and the second friction plate 2-3b undergo relative deformation, the friction keys slide relative to each other to dissipate energy, and the slope structure of the self-resetting bolt washers 2-2 provides self-resetting force.

[0050] The supporting structure of this invention is a lightweight, high-strength biomimetic tower unit, composed of an outer steel pipe, an inner steel pipe, a biomimetic steel pipe bundle, and filled concrete, forming the load-bearing foundation of the vibration reduction system. The tower units are connected by a self-resetting connection assembly, which integrates a ring plate, a sloped self-resetting bolt washer, and a variable friction connection plate with a friction key, achieving integrated energy dissipation and reset functions. Finally, regarding the core vibration reduction mechanism, this invention features three innovative constructions: First, it employs a distributed multi-inertial-capacity subsystem. At the same height level, each subsystem forms a first inertial-capacity mass by sliding a guide rod with a mass block and a first inertial-capacity flywheel within the sleeve, and a second inertial-capacity mass by linking a third rack with a second inertial-capacity flywheel, thus forming a two-stage inertial-capacity mechanism. This vibration reduction system can be arranged between tower unit sections at different height levels, forming a low-weight, high-efficiency inertial-capacity vibration reduction system. Second, a composite disc spring is installed on the guide rod, forming a gradually stiffening stiffness characteristic with a staged stiffness response, which can broaden the vibration reduction frequency band. Third, by using an omnidirectional circular track for guidance, adaptive start-up and movement can be achieved under any wind direction. This invention can more effectively suppress the complex wind vibration response of wind turbine towers, reduce counterweight requirements, extend structural life, and adapt to the installation and maintenance needs of remote areas.

Claims

1. A horizontal omnidirectional adaptive inertial capacitance damping system, characterized in that, The system includes several parallel mass blocks (3-1), several first inertial-capacitance mechanisms connected to each mass block (3-1) along a parallel direction, and second inertial-capacitance mechanisms connected to the mass blocks (3-1) along a direction orthogonal to the parallel direction. Each first inertial-capacitance mechanism includes a sleeve (3-2) fixed below the mass blocks and a pair of guide rods (3-3) located at both ends of the sleeve and sliding relative to the sleeve. Disc springs are fitted onto the outer portions of the two guide rods, which are positioned between the outer protrusion of the guide rod and the outer wall of the sleeve (3-2). The outer ends of the guide rods are slidably mounted on a first circular slide rail (3-10) on the inner wall of the wind turbine tower. a) On the sleeve, one end of the two guide rods is linked by the first gear transmission unit. The first gear transmission unit is connected to the first inertial capacity flywheel (3-4) located in the sleeve (3-2). The second inertial capacity mechanism includes a bracket (3-12) perpendicular to the direction of the guide rod (3-3). The bracket (3-12) is slidably mounted on the second circular slide rail (3-12a) on the inner wall of the wind turbine tower. The mass block is slidably mounted on the bracket (3-12) and the sleeve (3-2). The second gear and rack transmission unit connected to the mass block is connected to the second inertial capacity flywheel (3-6) located on the bracket (3-12). The first gear transmission unit includes at least two first racks (3-3a) disposed at one end of one of the guide rods (3-3) and at least one second rack (3-3b) disposed at one end of the other guide rod. The first racks (3-3a) and the second racks (3-3b) are respectively interlocked and meshed with a first gear (3-5). The first gear (3-5) and the first inertial flywheel (3-4) are coaxially connected. The second gear transmission unit includes a third rack (3-3a) connected to a connecting rod (3-13) disposed above the mass block. 8) and the second gear (3-7) coaxially connected with the second inertial flywheel (3-6), the third rack (3-8) meshing with the second gear (3-7); the disc spring is a variable stiffness disc spring assembly; the sleeve (3-2) is mounted on the bracket (3-12) via a sliding limit rod (3-11); the bracket (3-12) has horizontal elongated holes on two opposite sides along its length, the sleeve (3-2) has through holes on the corresponding sides, and the sliding limit rod (3-11) passes through the through holes on the side of the sleeve and the elongated holes of the bracket and is slidably connected to the bracket.

2. A biomimetic wind turbine tower, characterized in that, The system includes the horizontal omnidirectional adaptive inertial capacitance damping system as described in claim 1, wherein the damping system is located at the top of the wind turbine tower and / or at the connection between tower unit sections.

3. A biomimetic wind turbine tower according to claim 2, characterized in that, It also includes multiple coaxial conical tower units (1), which are connected by a self-resetting connection assembly.

4. A biomimetic wind turbine tower according to claim 3, characterized in that, The tower unit (1) includes a biomimetic steel tube bundle consisting of an outer steel tube (1-1), an inner steel tube (1-2), and several core tubes (1-3). The outer steel tube (1-1) and the inner steel tube (1-2) are coaxially sleeved, and several core tubes (1-3) are evenly distributed between the outer steel tube (1-1) and the inner steel tube (1-2). The space between the outer steel tube (1-1) and the inner steel tube (1-2) and the interior of the biomimetic steel tube bundle are evenly filled with concrete.

5. A biomimetic wind turbine tower according to claim 3, characterized in that, The self-resetting connection assembly includes an annular plate (2-1), a variable friction connection plate (2-3), and a self-resetting bolt pad (2-2). The annular plate (2-1) is located on the connection end face of adjacent tower units. The inner side is connected by bolts and the self-resetting bolt pad (2-2), and the outer side of the tower unit (1) is connected by the variable friction connection plate (2-3).

6. A biomimetic wind turbine tower according to claim 5, characterized in that, The variable friction connecting plate (2-3) includes a first friction plate (2-3a) and a second friction plate (2-3b); the first friction plates (2-3a) are arranged in pairs and are respectively located at the connection point on the outside of adjacent tower units; the second friction plate (2-3b) is connected to a pair of first friction plates (2-3a), and multiple cooperating friction keys are provided on the opposite side of the first friction plate (2-3a) and the second friction plate (2-3b).

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