Novel tower drum multidirectional energy dissipation damper

Abstract

The invention belongs to the technical field of tower drum shock absorption, and discloses a novel tower drum multidirectional energy consumption damper which comprises a tower drum and is characterized in that a built-in bracket is connected in the tower drum, an energy consumption damping mass block is arranged on the built-in bracket, an energy consumption damping mass block energy consumption damping clamping groove is formed in the energy consumption damping mass block, and the energy consumption damping mass block energy consumption damping clamping groove is connected with the built-in bracket. One end of the energy dissipation damper is connected with the energy dissipation damping mass block and the energy dissipation damping clamping groove, the other end of the energy dissipation damper is connected to the tower barrel, a ball guide rail is further arranged on the energy dissipation damping mass block, and universal balls are arranged in the ball guide rail and arranged on the upper surface of the built-in bracket. Technical breakthroughs are achieved through innovation of a multidirectional energy consumption mechanism, steel-concrete interface optimized connection, modular prefabrication construction, technical implementation details and the like, the method is suitable for a typhoon and earthquake coupling area, the safety of the wind power tower under the extreme working condition is remarkably improved, the cost of the whole life cycle is reduced by 25%, and the safety of the wind power tower is improved. And a key technical support is provided for offshore wind power and western high-intensity area wind power development.

Description

Technical Field

[0001] The invention belongs to the technical field of tower energy dissipation and vibration reduction, in particular to a novel tower multi-directional energy dissipation damper. Background Art

[0002] With the acceleration of global energy transformation, wind power, as an important pillar of renewable energy, continues to expand in scale. As the core supporting structure of wind turbines, the seismic performance, connection reliability and construction efficiency of wind turbine towers directly affect the safety and economy of wind power systems. Traditional wind turbine towers mostly use one-way dampers, damping mass balls and steel-concrete interface bolt connections or grouting sleeve processes. Although they can meet basic needs, they have significant defects: one-way dampers can only dissipate energy in a single direction and are difficult to cope with complex multi-directional loads such as typhoons and earthquakes; the damping mass ball lacks an energy dissipation mechanism at the steel-concrete interface and is prone to slippage or fatigue damage under cyclic loads; the dampers customized and installed on site have a long construction period and high precision requirements, especially in remote areas where implementation is difficult and costly. The installation of traditional dampers inside the tower tube and tower frame has an obstructive effect on later operation and maintenance, which is not conducive to later operations.

[0003] Chinese patent CN109653958A discloses a self-resetting rubber damping energy dissipation device, which includes: an outer tube, an inner tube, a rubber damping plate, a clamp, an elastic component, a first cross plate and a second cross plate; the inner tube is sleeved in the outer tube; one end of the rubber damping plate passes through the side wall of the outer tube and is fixed on the outer wall of the inner tube, a small part of the rubber damping plate is located between the outer wall of the inner tube and the inner wall of the outer tube, most of the rubber damping plate is arranged between the two clamps, and is fixed between the two clamps by bolts near the outer wall of the outer tube; the two clamps are fixed on the outer wall of the outer tube, the first cross plate is fixed to the top of the outer tube, the second cross plate is fixed to the bottom of the inner tube, the elastic component is located in the cavity of the inner tube, and the two ends of the elastic component are respectively fixed to the first cross plate and the second cross plate. The present invention realizes the vibration reduction of the swaying and deforming tower. The structure of this technology is complex, the on-site construction is difficult, and the cycle is long. Summary of the invention

[0004] In response to the above technical bottlenecks, the present invention proposes a new type of multi-directional energy-absorbing damper for towers. Through the innovative design of a multi-directional sliding energy-absorbing mechanism, the synchronous dissipation of multi-directional vibration energy is achieved, breaking through the limitation of unidirectional energy absorption of traditional dampers. The multi-directional damper is integrated in the steel-concrete joint section. Through the flexible deformation of the energy-absorbing element, the multi-dimensional deformation difference between the steel cylinder and the concrete tower is effectively coordinated to avoid interface stress concentration and local damage. Secondly, in terms of structural design, the middle damping mass is designed to be hollow, which ensures the normal operation of the later operation and maintenance.

[0005] A novel multi-directional energy-absorbing damper for a tower comprises a tower, an internally built-in corbel is connected to the tower, an energy-absorbing damping mass is arranged on the internally built-in corbel, an energy-absorbing damping mass is arranged on the energy-absorbing damping mass and an energy-absorbing damping slot is arranged on the energy-absorbing damping mass, one end of the energy-absorbing damper is connected to the energy-absorbing damping mass and the energy-absorbing damping slot is arranged, the other end of the energy-absorbing damper is connected to the tower, a ball guide is also arranged on the energy-absorbing damping mass, a universal ball is arranged in the ball guide, and the universal ball is arranged on the upper surface of the internally built-in corbel.

[0006] The energy dissipation damping mass is annular, and outer concave surfaces are evenly distributed on the energy dissipation damping mass, and the energy dissipation damping is arranged inside the outer concave surfaces.

[0007] The built-in corbels and the steel bars on the inner wall of the tower are overlapped and cast in pieces as a whole to form an assembled structure.

[0008] The two ends of the energy dissipation damper are spherical.

[0009] The other end of the energy dissipation damper is connected to the tower energy dissipation damper slot on the tower.

[0010] The beneficial effects of the present invention are as follows: 1. Innovation in structural design The energy-absorbing damping mass is connected to the energy-absorbing damping through the outer concave surface. The structure is designed to be hollow in the middle, ensuring that the subsequent operation and maintenance can pass through the middle of the damper, ensuring the normal operation of the subsequent wind power, and ensuring the same operation and maintenance mode as the traditional tower frame without maintenance.

[0011] 2. Modular construction innovation The prefabricated integrated module design is adopted to prefabricate the damper and the tower body into standard units, and the tower can be quickly assembled on site through high-precision positioning. This process not only reduces the on-site workload by more than 80%, but also ensures the construction accuracy through factory prefabrication, significantly shortens the construction period and reduces environmental impact.

[0012] 3. Multi-directional energy consumption technology support Multi-directional energy consumption mechanism: as attached Figure 2 The core components of the nested damper are displayed. The spherical friction pair realizes multi-directional sliding energy dissipation through curved surface contact, and the multi-dimensional viscosity unit dissipates vibration energy during shear deformation.

[0013] Improved construction efficiency: Figure 6 The module disassembly and assembly process is presented, and the standardized interface design ensures that the installation error is ≤2mm, meeting the verticality requirements of 100-meter-class wind turbine towers.

[0014] Through structural innovation and construction reform, the present invention improves the seismic performance of wind turbine towers under the coupling of typhoons (wind speed ≥ 51m / s) and earthquakes (intensity ≥ 8 degrees) by more than 40%, while reducing the full life cycle cost by 25%, providing key technical support for the development of offshore wind power and wind power in high-intensity areas in western my country. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the full assembly of the present invention; Figure 2 It is a schematic diagram of a fully assembled three-dimensional cross-section of the present invention; Figure 3 It is a schematic diagram of the fully assembled interior of the present invention; Figure 4 It is a schematic diagram of the fully assembled plane of the present invention; Figure 5 It is a fully assembled internal energy dissipation plan view of the present invention; Figure 6 It is a three-dimensional schematic diagram of the explosion of the present invention; Description of reference numerals: 1-tower, 101-tower energy-absorbing damping slot, 2-built-in bracket, 3-energy-absorbing damping, 4-energy-absorbing damping mass, 401-energy-absorbing damping mass energy-absorbing damping slot, 5-universal ball, 501-ball guide rail Specific implementation methods

[0016] In order to make the purpose, technical solutions and advantages of the invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. Example

[0017] A novel tower multi-directional energy dissipation damper of the present invention, such as Figures 1 to 6 As shown, it includes a tower 1, a built-in corbel 2 is connected inside the tower 1, an energy-absorbing damping mass 4 is provided on the built-in corbel 2, an energy-absorbing damping mass 4 is provided with an energy-absorbing damping mass energy-absorbing damping slot 401, one end of the energy-absorbing damper 3 is connected to the energy-absorbing damping mass energy-absorbing damping slot 401, and the other end of the energy-absorbing damper 3 is connected to the tower 1, a ball guide rail 501 is also provided on the energy-absorbing damping mass 4, a universal ball 5 is provided in the ball guide rail 501, and the universal ball 5 is arranged on the upper surface of the built-in corbel 2.

[0018] The energy dissipation damping mass 4 is annular, with outer concave surfaces evenly distributed on the energy dissipation damping mass 4, the energy dissipation damper 3 is arranged in the outer concave surfaces, and a ball guide rail 501 is arranged on the energy dissipation damping mass 4 between the outer concave surfaces.

[0019] The built-in corbel 2 and the inner wall steel bars of the tower 1 are overlapped and cast in pieces as a whole to form an assembled structure.

[0020] The energy dissipation damper 3 adopts the existing structure, and the two ends of the energy dissipation damper 3 are designed to be spherical.

[0021] The other end of the energy dissipation damper 3 is connected to the tower energy dissipation damper slot 101 on the tower 1 .

[0022] See also Figure 1 A built-in corbel 2 is arranged on the inner wall of the tower 1, and the built-in corbel 2 is overlapped with the steel bars on the inner wall of the tower 1, and is cast in pieces as a whole into an assembled structure at a prefabricated factory, and is assembled into components on an offshore wind power assembly construction ship or a western land wind farm to reduce environmental pollution.

[0023] See also Figure 5 A ball guide rail 501 is provided on the bottom surface of the energy dissipation damping mass 4. After the universal ball 5 is positioned, the ball guide rail 501 is assembled with the universal ball 5. The surfaces of the universal ball 5 and the ball guide rail 501 are made smooth enough by lubricating agents and other measures to ensure effective sliding during vibration.

[0024] See also Figure 2 There is a universal ball 5 on the surface of the built-in corbel 2, and no ball guide rail 501 is set on the surface of the built-in corbel 2. The surface is smooth enough to provide multi-directional sliding of the ball. The universal ball 5 is positioned on the surface of the corbel, and the ball guide rail 501 of the energy-absorbing damping mass 4 is assembled with the universal ball 5.

[0025] See also Figure 2 After the universal ball 5 and the ball guide rail 501 on the bottom of the energy-absorbing mass 4 are assembled, the tower energy-absorbing damping slot 101 is assembled and connected with the end of the energy-absorbing damper 3, and multiple positions are set on the inner wall of the tower to connect with the damper 3 to ensure multi-directional sliding energy-absorbing vibration reduction.

[0026] See also Figure 3 On the outer concave surface of the energy dissipation damping mass 4, the end of the energy dissipation damper 3 is assembled and connected with the energy dissipation damping slot 401 of the energy dissipation damping mass, and the other end of the energy dissipation damper 3 is connected with the tower energy dissipation damping slot 101. The energy dissipation damper 4 is a high-end precision product, and its grooving and processing need to be assembled and formed in the prefabrication factory.

[0027] See also Figure 5 The energy-absorbing damping mass 4 is a high-end manufacturing product due to its special structure and size. The processing and forming of the product needs to be forged once in a technical forming manufacturer to ensure the integrity of the structure and its performance.

[0028] See also Figure 6 The tower 1, the built-in bracket 2, the energy dissipation damper 3, the energy dissipation damping mass 4, the universal ball 5, and the detailed structures between the internal structures are assembled as prefabricated products during production, and then transported to the site for assembly into a multi-stage multi-directional energy dissipation damper, which can effectively play a vibration reduction role in the wind power tower, tower and frame.

Claims

1. A novel tower multi-directional energy dissipation damper, comprising a tower (1), characterized in that: The tower (1) is connected to a built-in bracket (2), an energy-absorbing damping mass (4) is provided on the built-in bracket (2), an energy-absorbing damping mass (4) is provided with an energy-absorbing damping mass energy-absorbing damping slot (401), one end of the energy-absorbing damper (3) is connected to the energy-absorbing damping mass energy-absorbing damping slot (401), the other end of the energy-absorbing damper (3) is connected to the tower (1), a ball guide rail (501) is also provided on the energy-absorbing damping mass (4), a universal ball (5) is provided in the ball guide rail (501), and the universal ball (5) is arranged on the upper surface of the built-in bracket (2).

2. The novel tower multi-directional energy dissipation damper according to claim 1 is characterized in that: The energy dissipation damping mass (4) is annular, has outer concave surfaces evenly distributed on the energy dissipation damping mass (4), and the energy dissipation damper (3) is arranged inside the outer concave surfaces.

3. The novel tower multi-directional energy dissipation damper according to claim 1 is characterized in that: The built-in corbels (2) and the inner wall steel bars of the tower tube (1) are overlapped and cast in pieces as a whole to form an assembled structure.

4. The novel tower multi-directional energy dissipation damper according to claim 1 is characterized in that: The two ends of the energy dissipation damper (3) are spherical.

5. The novel tower multi-directional energy dissipation damper according to claim 1 is characterized in that: The other end of the energy dissipation damper (3) is connected to a tower energy dissipation damper slot (101) on the tower (1).

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