A vibration energy harvesting system based on tension tuned mass damper

Abstract

The present application relates to a kind of vibration energy recovery systems based on tension tuned mass damper, comprising: high-strength cable group, including multiple high-strength cable, anchor on building structure;Annular permanent magnet ring, hang and fix by high-strength cable group, annular permanent magnet ring includes the cylindrical permanent magnet ring of central aperture and a pair of half-ring earring connected in the middle position of cylindrical permanent magnet ring;Magnetic induction coil group, by a pair of structural parameters same helical coil, symmetrically arranged in the two sides of annular permanent magnet ring, the circular opening formed in the center of helical coil is smaller than the outer diameter of annular permanent magnet ring;Support device, for fixed magnetic induction coil group, including Y-shaped support column and the cylindrical support cylinder connected in the inside of two bifurcations of Y-shaped support column;And energy recovery group by power consumption device is formed.Compared with prior art, the present application can control fixed-frequency vibration by lightweight design, can be integrated with vibration control and energy recovery synergy, with space efficient and installation flexibility and the like advantages.

Description

Technical Field

[0001] This invention relates to the field of vibration control technology in structural engineering, and in particular to a vibration energy recovery system based on a tension-tuned mass damper. Background Technology

[0002] As the industrial economy grows, traditional industries face the dual challenges of land scarcity and functional upgrading. Cities are gradually exploring new forms of industrial space organization called "industrial buildings moving upstairs." This model achieves efficient and intensive use of industrial space and urban land by introducing small and medium-sized industrial manufacturing processes into multi-story or high-rise framework structures.

[0003] However, this type of operation requires industrial equipment to be mounted on a platform structure or building floor. Eccentric centroid-type equipment, such as planar reciprocating screens, generates excitation forces during operation that can cause vibration responses in localized areas of the platform and even the entire building. To ensure personnel comfort and the long-term safety of the building, effective control of the structural vibrations caused by such equipment is necessary. Currently, a widely adopted method for structural vibration control is to install damping devices in the equipment installation area to attenuate the structure's response energy.

[0004] Among various damping control devices, the tuned mass damper (TMD) can construct a secondary dynamic system tuned to the target frequency by adding a mass block and flexible connections, thereby reducing the vibration response of the main structure at that frequency. This makes it a preferred technical solution for addressing such fixed-frequency excitation problems. However, the use of TMDs in industrial elevators also presents certain challenges: firstly, the weight of the secondary dynamic system cannot differ significantly from that of the main structure; secondly, the continuous excitation caused by equipment operation will continuously input mechanical energy into the TMD system. The damper needs to continuously absorb and dissipate energy under high-frequency, long-term operating conditions, which can easily lead to heat accumulation, material fatigue, and even performance degradation in its key components, shortening its service life.

[0005] On the other hand, electromagnetic dampers, developed in recent years, utilize the eddy currents generated by the movement of conductors in a magnetic field to convert vibration energy into electrical energy and dissipate it as heat. They offer advantages such as fast response, frictionless operation, and low weight, making them suitable for vibration control in various small structures and equipment. However, due to their lower energy dissipation efficiency compared to viscous dampers, they have not yet been widely used in buildings. Furthermore, current electromagnetic damper systems lack energy recovery mechanisms, resulting in the generated electrical energy being passively dissipated as heat in the circuit, failing to achieve secondary utilization of vibration energy, thus leaving room for improvement. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a vibration energy recovery system based on a tension-tuned mass damper. Through lightweight design to control fixed-frequency vibration, it can achieve integrated vibration control and energy recovery, and has high space efficiency and installation flexibility.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] Specifically, the technical features of this type of vibration energy recovery system for power machine support structures based on tension-tuned mass dampers include: First, a tension member (cable) is used as an external stiffness element, and a tension-tuned mass damper is formed by connecting moving mass elements in series. At the same time, the electromagnetic induction effect is used to increase the resistance, so that a large damping can be achieved with a small mass. Second, the energy generated by vibration is not directly wasted, but is led to an external circuit through an internal induced current. The recovered energy can be used to supply independent electrical equipment inside the support structure, realizing energy recovery and utilization. Third, its damping effect can be controlled by the cable tension, the mass of the moving element, and the magnetism of the coil and permanent magnet. Therefore, the shape of the cable and moving element can be arbitrarily adjusted according to the installation position, minimizing the occupation of structural space.

[0009] This invention provides a vibration energy recovery system based on a tension-tuned mass damper, comprising:

[0010] High-strength cable assembly, consisting of multiple high-strength cables, is anchored to the building structure;

[0011] The annular permanent magnet ring is suspended and fixed by the high-strength cable group. The vibration direction of the high-strength cable group is parallel to the main vibration direction of the building structure. The annular permanent magnet ring includes a cylindrical permanent magnet ring with a central opening and a pair of semi-annular earrings connected to the middle of the cylindrical permanent magnet ring.

[0012] The magnetic induction coil assembly consists of a pair of helical coils with identical structural parameters, symmetrically arranged on both sides of the annular permanent magnet ring. The diameter of the circular opening formed at the center of the helical coils is smaller than the outer diameter of the annular permanent magnet ring, in order to ensure that the relative motion generates a stable electromagnetic induction effect.

[0013] A support device for fixing the magnetic coil assembly includes a Y-shaped support column and a cylindrical support cylinder connected to the inner sides of the two forks of the Y-shaped support column. The magnetic coil assembly is wound around the cylindrical support cylinder, and a vibration distance of an annular permanent magnet is reserved between the two cylindrical support cylinders.

[0014] The energy recovery unit, electrically connected to the magnetic induction coil group, is used to integrate, rectify, and regulate the induced current to supply power to the power-consuming device. The power-consuming device is an electrical appliance used in a building.

[0015] Furthermore, the high-strength cable group has at least three anchor points on the building structure, and these points are not collinear. The virtual intersection of multiple high-strength cables passes through the center of the annular permanent magnet ring to ensure uniform stress and stable movement.

[0016] Furthermore, the magnetic induction coil group is electrically connected to the energy recovery group in parallel. This allows for the integration and convergence of the induced currents from different coils during vibration, achieving efficient centralized recovery and unified management of vibration energy.

[0017] Furthermore, the energy recovery unit includes a rectifier, a voltage regulator, and an energy storage device connected in sequence. The rectifier converts the AC induced current into DC current using diodes; the voltage regulator stabilizes the voltage generated by a capacitor. Each damping component (TMD) generates induced current during vibration, and all coils are connected in parallel to the same circuit. After being rectified to a uniform direction, the induced current enters the energy storage device for temporary storage, and then supplies power to the energy-consuming devices, thus realizing energy recovery and utilization.

[0018] Furthermore, the energy recovery unit also includes a current monitoring device for real-time monitoring of the magnitude and direction of the induced current to assess the system's operating status and energy recovery efficiency.

[0019] Furthermore, the two cylindrical support cylinders of the support device are arranged concentrically with the annular permanent magnet ring, and the gap between the cylindrical support cylinders and the annular permanent magnet ring is greater than the maximum vibration amplitude of the annular permanent magnet ring.

[0020] Furthermore, the pretension of the high-strength cable group, the mass and magnetic field strength of the annular permanent magnet ring, and the number of turns of the magnetic induction coil group are matched and optimized according to the operating frequency and excitation amplitude of the external power equipment.

[0021] Furthermore, the system is deployed in the stairwell area of ​​the building structure or in irregularly shaped roof structures.

[0022] Furthermore, the system energy conversion path is as follows: vibration of power equipment, force transmission of the main structure, vibration of the ring permanent magnet, magnetic induction coil group cutting magnetic induction lines to generate induced current, and energy recovery group rectifying and regulating the current and storing it to power the power-consuming device.

[0023] Furthermore, a gap is reserved between the magnetic coil assembly and the annular permanent magnet ring to ensure that the annular permanent magnet ring has free vibration space under vibration drive and does not come into contact with the helical coil.

[0024] The system assembly method includes the following steps:

[0025] S1: Secure one end of each high-strength cable to the semi-circular lug of the annular permanent magnet ring, and anchor the other end to the predetermined position of the building structure and tension it to adjust the annular permanent magnet ring to the working position.

[0026] S2: Arrange magnetic coil groups symmetrically on both sides of the annular permanent magnet ring, and wind the coils around the cylindrical support cylinder of the support device;

[0027] S3: Circuit connecting the wire end of the magnetic induction coil group to the external energy recovery group;

[0028] S4: Repeat steps S1 to S3 to complete the installation of all damper units in the system.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] (1) High-efficiency vibration reduction with lightweight design. By using tension members (high-strength cables) as external stiffness elements and electromagnetic induction-generated eddy current damping as the main energy dissipation mechanism, the system reduces its dependence on the size of the mass block in traditional TMD. Using a ring permanent magnet as the moving mass unit, combined with reasonable cable pretension adjustment, a large damping effect can be achieved with a small mass, which is suitable for "industrial upstairs" building structures that are sensitive to additional weight.

[0031] (2) Achieving integrated vibration control and energy recovery. By combining a tension tuned mass damper (TMD) with electromagnetic energy recovery technology, the dual functions of vibration reduction and power generation are achieved. The system provides the required geometric stiffness through high-strength cables, forming a precisely tuned TMD system that effectively suppresses structural vibration; at the same time, it utilizes the reciprocating motion of a ring permanent magnet coil in the magnetic induction coil group to cut magnetic field lines and generate electricity, converting mechanical vibration energy into electrical energy, thus solving the problems of traditional TMD simply dissipating energy and electromagnetic dampers not fully utilizing their power generation potential.

[0032] (3) It has high space efficiency and installation flexibility. The system adopts a cable suspension structure, which has low installation space requirements and can be flexibly deployed in various architectural spaces such as stairwell areas and irregular roof structures. The arrangement of cables in the plane is highly flexible and can be adjusted and optimized according to the building structure layout to achieve integrated structural and functional design. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of a vibration energy recovery system based on a tension-tuned mass damper.

[0034] Figure 2 Schematic diagram of the assembly of high-strength cable-to-ring permanent magnet-magnetic coil assembly;

[0035] Figure 3 This is a schematic diagram of the supporting device.

[0036] Figure 4 This is a schematic diagram of a vibration energy recovery system based on a tension-tuned mass damper installed in a plane.

[0037] Figure 5 This is a schematic diagram of current energy conversion in a vibration energy recovery system based on a tension-tuned mass damper.

[0038] Reference numerals in the attached drawings: 1-Building structure; 2-High-strength cable assembly; 3-Annular permanent magnet ring; 4-Magnetic coil assembly; 5-Support device; 6-Staircase area; 7-Irregular roof structure; 8-Rectifier; 9-Energy storage device; 10-Current monitoring device; 11-Power consumption device; 3-1-Cylindrical permanent magnet ring; 3-2-Semi-annular earring; 5-1-Y-shaped support column; 5-2-Cylindrical support tube. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0040] Example 1

[0041] This embodiment provides a vibration energy recovery system based on a tension-tuned mass damper, such as... Figure 1-5 As shown, it includes:

[0042] High-strength cable group 2, comprising multiple high-strength cables, is anchored to building structure 1;

[0043] The annular permanent magnet ring 3 is suspended and fixed by the high-strength cable group 2. The vibration direction of the high-strength cable group 2 is parallel to the main vibration direction of the building structure 1. The annular permanent magnet ring 3 includes a cylindrical permanent magnet ring 3-1 with a central opening and a pair of semi-annular earrings 3-2 connected to the middle of the cylindrical permanent magnet ring 3-1.

[0044] The magnetic coil group 4 consists of a pair of helical coils with identical structural parameters, symmetrically arranged on both sides of the annular permanent magnet ring 3. The diameter of the circular opening formed at the center of the helical coils is smaller than the outer diameter of the annular permanent magnet ring 3, in order to ensure that the relative motion produces a stable electromagnetic induction effect.

[0045] The support device 5 is used to fix the magnetic coil group 4, including a Y-shaped support column 5-1 and a cylindrical support tube 5-2 connected to the inner sides of the two forks of the Y-shaped support column 5-1. The magnetic coil group 4 is coiled on the cylindrical support tube 5-2, and a vibration distance of an annular permanent magnet ring 3 is reserved between the two cylindrical support tubes 5-2.

[0046] The energy recovery unit, electrically connected to the magnetic induction coil group 4, is used to integrate, rectify, and regulate the induced current to supply power to the power-consuming device 11. The power-consuming device 11 is an electrical device used in a building.

[0047] The system assembly method includes the following steps:

[0048] S1: Secure one end of each high-strength cable to the semi-circular lug 3-2 of the annular permanent magnet ring 3, and anchor the other end to the predetermined position of the building structure 1 and tension it to adjust the annular permanent magnet ring 3 to the working position.

[0049] S2: Magnetic coil groups 4 are symmetrically arranged on both sides of the annular permanent magnet ring 3, and the coils are wound on the cylindrical support cylinder 5-2 of the support device 5;

[0050] S3: Circuit connecting the wire end of the magnetic induction coil group 4 to the external energy recovery group;

[0051] S4: Repeat steps S1 to S3 to complete the installation of all damper units in the system.

[0052] Example 2

[0053] This embodiment provides a vibration energy recovery system based on a tension-tuned mass damper, such as... Figure 1-5 As shown, it includes:

[0054] High-strength cable group 2, comprising multiple high-strength cables, is anchored to building structure 1;

[0055] The annular permanent magnet ring 3 is suspended and fixed by the high-strength cable group 2. The vibration direction of the high-strength cable group 2 is parallel to the main vibration direction of the building structure 1. The annular permanent magnet ring 3 includes a cylindrical permanent magnet ring 3-1 with a central opening and a pair of semi-annular earrings 3-2 connected to the middle of the cylindrical permanent magnet ring 3-1.

[0056] The magnetic coil group 4 consists of a pair of helical coils with identical structural parameters, symmetrically arranged on both sides of the annular permanent magnet ring 3. The diameter of the circular opening formed at the center of the helical coils is smaller than the outer diameter of the annular permanent magnet ring 3, in order to ensure that the relative motion produces a stable electromagnetic induction effect.

[0057] The support device 5 is used to fix the magnetic coil group 4, including a Y-shaped support column 5-1 and a cylindrical support tube 5-2 connected to the inner sides of the two forks of the Y-shaped support column 5-1. The magnetic coil group 4 is coiled on the cylindrical support tube 5-2, and a vibration distance of an annular permanent magnet ring 3 is reserved between the two cylindrical support tubes 5-2.

[0058] The energy recovery unit, electrically connected to the magnetic induction coil group 4, is used to integrate, rectify, and regulate the induced current to supply power to the power-consuming device 11. The power-consuming device 11 is an electrical device used in a building.

[0059] In a specific implementation, the high-strength cable group 2 has at least three anchor points on the building structure 1, and these points are not collinear. The virtual intersection of multiple high-strength cables passes through the center of the annular permanent magnet ring 3. This ensures uniform stress distribution and stable movement.

[0060] In a specific implementation, the magnetic induction coil group 4 is electrically connected to the energy recovery group in parallel. This allows for the integration and convergence of the induced currents from different coils during vibration, achieving efficient centralized recovery and unified management of vibration energy.

[0061] In a specific embodiment, the energy recovery unit includes a rectifier 8, a voltage regulator, and an energy storage device 9 connected in sequence. The rectifier 8 converts the AC induced current into DC current through a diode; the voltage regulator stabilizes the generated voltage through a capacitor. Each damping component (TMD) generates induced current during vibration, and all coils are connected in parallel to the same circuit. After being rectified in the same direction by the rectifier 8, the induced current enters the energy storage device 9 for temporary storage, and then supplies power to the energy-consuming device 11, thus realizing energy recovery and utilization.

[0062] In a specific embodiment, the energy recovery group further includes a current monitoring device 10, which is used to monitor the magnitude and direction of the induced current in real time to evaluate the system's operating status and energy recovery efficiency.

[0063] In a specific embodiment, the two cylindrical support cylinders 5-2 of the support device 5 are arranged concentrically with the annular permanent magnet ring 3, and the gap between the cylindrical support cylinders 5-2 and the annular permanent magnet ring 3 is greater than the maximum vibration amplitude of the annular permanent magnet ring 3.

[0064] In a specific implementation, the pretension of the high-strength cable group 2, the mass and magnetic field strength of the annular permanent magnet ring 3, and the number of turns of the magnetic induction coil group 4 are matched and optimized according to the operating frequency and excitation amplitude of the external power equipment.

[0065] In a specific implementation, the system is deployed in the stairwell area 6 of the building structure or the irregular roof structure 7 to reduce interference with the usable space.

[0066] In a specific implementation, the system energy conversion path is as follows: vibration of the power equipment, force transmission of the main structure, vibration of the annular permanent magnet ring 3, magnetic induction coil group 4 cutting magnetic induction lines to generate induced current, and energy recovery group rectifying and regulating the current and storing it to supply power to the power consumption device 11.

[0067] In a specific embodiment, a gap is reserved between the magnetic coil group 4 and the annular permanent magnet ring 3 to ensure that the annular permanent magnet ring 3 has free vibration space under vibration drive and does not come into contact with the spiral coil.

[0068] The system assembly method includes the following steps:

[0069] S1: Secure one end of each high-strength cable to the semi-circular lug 3-2 of the annular permanent magnet ring 3, and anchor the other end to the predetermined position of the building structure 1 and tension it to adjust the annular permanent magnet ring 3 to the working position.

[0070] S2: Magnetic coil groups 4 are symmetrically arranged on both sides of the annular permanent magnet ring 3, and the coils are wound on the cylindrical support cylinder 5-2 of the support device 5;

[0071] S3: Circuit connecting the wire end of the magnetic induction coil group 4 to the external energy recovery group;

[0072] S4: Repeat steps S1 to S3 to complete the installation of all damper units in the system.

[0073] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0074] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A vibration energy recovery system based on a tension-tuned mass damper, characterized in that, include: The high-strength cable group (2) includes multiple high-strength cables and is anchored to the building structure (1); The annular permanent magnet ring (3) is suspended and fixed by the high-strength cable group (2). The vibration direction of the high-strength cable group (2) is parallel to the main vibration direction of the building structure (1). The annular permanent magnet ring (3) includes a cylindrical permanent magnet ring (3-1) with a central opening and a pair of semi-circular earrings (3-2) connected to the middle of the cylindrical permanent magnet ring (3-1). The magnetic induction coil group (4) consists of spiral coils symmetrically arranged on both sides of the annular permanent magnet ring (3), and the diameter of the circular opening formed at the center of the spiral coil is smaller than the outer diameter of the annular permanent magnet ring (3). The support device (5) is used to fix the magnetic coil group (4), including a Y-shaped support column (5-1) and a cylindrical support cylinder (5-2) connected to the inner side of the two forks of the Y-shaped support column (5-1). The magnetic coil group (4) is coiled on the cylindrical support cylinder (5-2). A ring permanent magnet (3) vibration distance is reserved between the two cylindrical support cylinders (5-2). The energy recovery group is electrically connected to the magnetic induction coil group (4) and is used to integrate, rectify and regulate the induced current to supply power to the power consumption device (11).

2. The vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The number of anchor points of the high-strength cable group (2) on the building structure (1) shall not be less than three and shall not be collinear. The virtual intersection of multiple high-strength cables passes through the center of the annular permanent magnet ring (3).

3. The vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The magnetic induction coil group (4) is electrically connected to the energy recovery group in parallel.

4. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The energy recovery unit includes a rectifier (8), a voltage regulator and an energy storage device (9) connected in sequence. The rectifier (8) integrates the AC induced current into DC current through a diode. The voltage regulator is a voltage that is stabilized by a capacitor.

5. A vibration energy recovery system based on a tension-tuned mass damper according to claim 4, characterized in that, The energy recovery unit also includes a current monitoring device (10) for real-time monitoring of the magnitude and direction of the induced current to assess the system's operating status and energy recovery efficiency.

6. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The two cylindrical support cylinders (5-2) of the support device (5) are arranged concentrically with the annular permanent magnet ring (3), and the gap between the cylindrical support cylinder (5-2) and the annular permanent magnet ring (3) is greater than the maximum vibration amplitude of the annular permanent magnet ring (3).

7. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The pretension of the high-strength cable group (2), the mass and magnetic field strength of the annular permanent magnet ring (3), and the number of turns of the magnetic induction coil group (4) are matched and optimized according to the operating frequency and excitation amplitude of the external power equipment.

8. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The system is installed in the stairwell area (6) of the building structure or in the irregular roof structure (7).

9. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, The system energy conversion path is as follows: vibration of power equipment, force transmission of main structure, vibration of ring permanent magnet (3), magnetic induction coil group (4) cuts magnetic induction lines to generate induced current, and energy recovery group rectifies and regulates the current and stores it to supply power to power consumption device (11).

10. A vibration energy recovery system based on a tension-tuned mass damper according to claim 1, characterized in that, A gap is reserved between the magnetic induction coil group (4) and the annular permanent magnet ring (3) to ensure that the annular permanent magnet ring (3) has free vibration space under vibration drive and does not come into contact with the spiral coil.

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