Active and passive combined star-shaped three-dimensional seismic mitigation and isolation device suitable for dry-type air-core reactor
By adopting a star three-dimensional shock-reducing and isolation device with active and passive combination on the dry hollow reactor, the problem of insufficient shock-reducing and isolation devices in the prior art is solved, and effective three-dimensional shock-reducing and self-resetting of the dry hollow reactor is achieved, improving the seismic resistance performance and equipment safety.
Patent Information
- Application Number
- CN202510076432.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-05-13
AI Technical Summary
In the prior art, there are fewer shock-reduction and isolation devices for dry hollow reactors, and are mainly passive shock-reduction and isolation devices, which are difficult to effectively reduce the seismic response of the structure and have residual deformation problems.
The star three-dimensional shock-reduction and isolation device that combines active and passively, includes a passive control unit and an active control unit. Through the passive control unit composed of a stacked rubber damping layer, a steel spring and a friction energy-consuming module, and the active control unit composed of a jack, an electromagnetic and a sensor, three-dimensional shock-reduction and self-reset of the dry hollow reactor is realized.
It effectively reduces the horizontal and vertical vibration of the dry hollow reactor, extends the self-vibration period, reduces the risk of equipment damage, improves the seismic resistance, and realizes self-reset after the earthquake, avoiding residual deformation.
Smart Images
Figure CN119993687A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of reactors, and in particular relates to an active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactors. Background Art
[0002] Dry-type air-core reactors are the main components of power lifeline projects. Reactors can reduce line losses, suppress surge currents, provide reactive power compensation, and improve the power quality of high-voltage lines. The important position of reactors in power systems cannot be replaced by other power equipment.
[0003] The structural feature of the reactor is a typical "top-heavy" support structure, and the support structure will produce a secondary dynamic amplification effect. The natural frequency of the structural system is also close to the dominant frequency of the seismic wave, which is prone to quasi-resonance problems. At present, there are few seismic isolation devices specifically for reactors, and they are mainly passive seismic isolation devices. With the development of structural control theory, new ideas and methods have been provided for disaster prevention and mitigation of engineering structures. It transforms the passive seismic resistance of traditional structural systems that rely on stiffness and bearing capacity to semi-active / active control, which can effectively reduce the seismic response of key parts of the structure. However, there are few studies on the application of active control-related seismic isolation devices on electrical equipment. In response to this problem, the present invention provides an active-passive combined three-dimensional seismic isolation device suitable for dry-type reactors, which can also reduce the residual deformation of electrical equipment. Summary of the invention
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactors.
[0005] The present invention forms a three-dimensional seismic isolation device combining active and passive functions through passive seismic isolation composed of a passive control unit and active seismic isolation composed of an active control unit, which can realize three-dimensional seismic isolation and self-reset of a dry-type air-core reactor.
[0006] To achieve the above object, the technical solution adopted by the present invention is: An active-passive combined star-shaped three-dimensional seismic isolation device suitable for a dry-type air-core reactor, comprising a three-dimensional seismic isolation mechanism arranged between a post insulator and a post of the dry-type air-core reactor; The three-dimensional seismic isolation mechanism includes a support unit, an active control unit and a passive control unit. The top of the support unit is connected to the bottom of the support insulator, the bottom of the support unit is connected to the top of the support, and the active control unit and the passive control unit are both arranged on the support unit, and the active control unit and the passive control unit are connected.
[0007] Preferably, the support unit includes a star-shaped support top plate and a star-shaped support bottom plate, the star-shaped support top plate is arranged in parallel directly above the star-shaped support bottom plate, and the star-shaped support top plate and the star-shaped support bottom plate have the same structure, and the star-shaped support top plate and the star-shaped support bottom plate both include multiple star-shaped support walls, the active control unit and the passive control unit are both arranged between the star-shaped support top plate and the star-shaped support bottom plate, the bottom of each support insulator is respectively connected to the top of the corresponding star-shaped support wall on the star-shaped support top plate, and the top of each support is respectively connected to the bottom of the corresponding star-shaped support wall on the star-shaped support bottom plate.
[0008] Preferably, the passive control unit includes a laminated rubber damping layer, multiple steel springs and multiple groups of friction energy dissipation modules, the bottom and top of the laminated rubber damping layer are respectively connected to the middle of the top of the star-shaped support bottom plate and the middle of the bottom of the star-shaped support top plate, each group of friction energy dissipation modules is respectively connected to the bottom of the corresponding star-shaped support wall on the star-shaped support top plate and the active control unit, the bottom of each steel spring is respectively connected to the top of the corresponding star-shaped support wall on the star-shaped support bottom plate, and the top of each steel spring is respectively connected to a corresponding group of friction energy dissipation modules.
[0009] Preferably, each group of friction energy dissipation modules includes two friction energy dissipation modules; Each friction energy dissipation module comprises a friction limit slide, a friction block and a limit shock absorbing rubber. The friction limit slide is opened at the bottom of the star-shaped support wall, the limit shock absorbing rubber is arranged on the inner wall of the friction limit slide, and the friction block is slidably arranged inside the friction limit slide. The bottom of one of the friction blocks is connected to the top of the corresponding steel spring, and the bottom of the other friction block is connected to the active control unit.
[0010] Preferably, it is characterized in that the laminated rubber damping layer is composed of steel plates and rubber alternately stacked, and the top layer and the bottom layer are both steel plates.
[0011] Preferably, the active control unit includes multiple jacks, multiple groups of electromagnets and sensors, each jack is respectively arranged on the top of the corresponding star-shaped support wall on the star-shaped support bottom plate, and the top of each jack is respectively connected to the bottom of another corresponding friction block, each group of electromagnets is arranged between the laminated rubber damping layer and the corresponding steel spring, and the sensor is arranged between the star-shaped support bottom plate and the star-shaped support top plate and on the outer side of the encapsulation of the dry air-core reactor.
[0012] Preferably, each group of electromagnets includes two electromagnets, the top and bottom of the electromagnet near the laminated rubber damping layer are respectively connected to the bottom of the corresponding star-shaped support wall on the star-shaped support top plate and the top of the corresponding star-shaped support wall on the star-shaped support bottom plate, and the bottom of the electromagnet near the steel spring is connected to the top of the corresponding star-shaped support wall on the star-shaped support bottom plate.
[0013] Preferably, the sensor comprises a plurality of groups of displacement sensors and a plurality of acceleration sensors, the plurality of acceleration sensors are evenly spaced along the circumferential direction on the outer surface of the encapsulation of the dry-type air-core reactor, and each group of displacement sensors is respectively arranged between the corresponding star-shaped support wall on the star-shaped support top plate and the corresponding star-shaped support wall on the star-shaped support bottom plate; Each set of displacement sensors includes two displacement sensors, one of which is connected to the bottom of the corresponding star-shaped support wall on the star-shaped support top plate, and the other is connected to the top of the corresponding star-shaped support wall on the star-shaped support bottom plate.
[0014] Preferably, the active control unit further includes a controller, and the controller is connected to the displacement sensor and the acceleration sensor respectively, and the controller is connected to the jack and the electromagnet respectively.
[0015] The present invention also provides a working method of the above-mentioned active-passive combined star-shaped three-dimensional seismic isolation device applicable to dry-type air-core reactors, comprising the following steps: S1. Connect the bottom of each post insulator of the dry-type air-core reactor to the top of the corresponding support arm on the top plate of the star-shaped support, and connect the top of each post of the dry-type air-core reactor to the bottom of the corresponding support arm on the bottom plate of the star-shaped support, to complete the installation of the entire device; S2. When the dry-type air-core reactor encounters strong winds or earthquakes, the friction block reaches the sliding friction force, driving the star-shaped support top plate to slide left and right along the friction block to dissipate friction energy, and working together with the laminated rubber damping layer, it plays the role of horizontal and torsional seismic isolation; while the star-shaped support top plate drives the steel spring to play the role of vertical seismic isolation; S3, the displacement sensor and the acceleration sensor collect the vibration direction, sliding displacement and distance data between the star-shaped support top plate and the star-shaped support bottom plate of the dry-type air-core reactor, and transmit the collected data to the controller, which generates a control signal according to the input data, and controls the on and off power of the electromagnet through the control signal, thereby controlling the horizontal and torsional displacement of the dry-type air-core reactor caused by the vibration; at the same time, the jack is hydraulically lifted and lowered through the control signal, thereby controlling the vertical displacement range of the dry-type air-core reactor caused by the vibration; S4. When the data collected by the displacement sensor and the acceleration sensor indicate that the vibration has ended, the controller uses control signals to respectively control the power on and off of the electromagnet and the jack and the hydraulic lifting and lowering control to achieve self-reset of the entire device.
[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The passive control unit of the present invention is designed to be composed of a laminated rubber damping layer, a steel spring and a friction energy dissipation module, which can provide excellent horizontal passive seismic isolation performance. The viscoelastic properties of the rubber material and the appropriate sliding (friction block) material can effectively absorb and dissipate vibration energy, significantly reduce the displacement and acceleration under the action of horizontal vibration, and extend the natural vibration period of the equipment. The steel spring can effectively provide vertical stiffness to change the vertical natural frequency of the structure, and utilize the simultaneous horizontal and vertical shock absorption to reduce the risk of damage to the dry air reactor. (2) The present invention can provide excellent active seismic isolation function through the design of active control unit, can use displacement sensor and acceleration sensor to monitor the vibration of dry-type air-core reactor in real time, and adjust the working state of electromagnet and hydraulic jack as needed, so as to control the horizontal and torsional displacement and vertical displacement range of dry-type air-core reactor caused by vibration; the present invention can more effectively reduce the vibration frequency of dry-type air-core reactor, improve seismic performance, resist earthquake hazards, achieve good shock absorption effect, and avoid damage to equipment caused by vibration process to the greatest extent through the combination of active seismic isolation and passive seismic isolation. (3) Through the design of the active control unit, the present invention can realize the self-reset of the entire device by controlling the power on and off of the electromagnet and the jack and the hydraulic lifting control after the data collected by the displacement sensor and the acceleration sensor indicate that the vibration has ended; (4) The star-shaped support top plate and the star-shaped support bottom plate in the present invention are designed to facilitate heat dissipation of the dry-type air-core reactor. The design of the star-shaped support top plate and the star-shaped support bottom plate can avoid the problem of increased operating temperature of the dry-type air-core reactor caused by the damping process, thereby improving the reliability and safety of the system. (5) The present invention provides sufficient energy dissipation capacity for dry-type hollow reactors during earthquakes, reduces the overturning and even collapse of dry-type hollow reactors, and solves the problems of existing seismic isolation supports being unsuitable for dry-type hollow reactors, uncoordinated active and passive seismic isolation, and residual displacement. It can consume earthquake energy more effectively and provide self-resetting capability at the epicenter and after the earthquake, ensuring the safety of dry-type hollow reactors during earthquakes; and the present invention has the advantages of simple structure, low cost, easy installation, easy maintenance, and convenient factory manufacturing, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic diagram of the installation of an active-passive combined star-shaped three-dimensional seismic isolation device and a dry-type air-core reactor provided in Example 1 of the present invention; Figure 2 It is a front view of the three-dimensional seismic isolation mechanism in Example 1 of the present invention; Figure 3 It is a front cross-sectional view of the three-dimensional seismic isolation mechanism in Example 1 of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure plane in the AA direction; Figure 5 A three-dimensional cross-sectional view of the three-dimensional seismic isolation mechanism in Example 1 of the present invention; Figure 6 It is a top view of the three-dimensional seismic isolation mechanism in Example 1 of the present invention; Among them: 1-dry-type air-core reactor, 101-encapsulation, 102-star frame, 103-pillar insulator, 104 pillar, 2-star support plate, 201-star support top plate, 202-star support bottom plate, 203-star support arm, 3-passive control unit, 301-laminated rubber damping layer, 302-steel spring, 303-friction energy dissipation module, 3031-friction limit slide groove, 3032-friction block, 3033-limit shock-absorbing rubber, 4-active control unit, 401-jack, 402-electromagnet, 403-sensor, 4031-displacement sensor, 4032-acceleration sensor. DETAILED DESCRIPTION
[0018] The following is a description of the embodiments of the present invention. Figures 1 to 6 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0019] like Figures 1 to 6 As shown, an embodiment of the present invention provides an active-passive combined star-shaped three-dimensional seismic isolation device suitable for a dry-type air-core reactor, comprising a three-dimensional seismic isolation mechanism arranged between a post insulator 103 and a post 104 of a dry-type air-core reactor 1; The three-dimensional seismic isolation mechanism includes a support unit 2, an active control unit 4 and a passive control unit 3. The top of the support unit 2 is connected to the bottom of the support insulator 103, the bottom of the support unit 2 is connected to the top of the support 104, the active control unit 4 and the passive control unit 3 are both arranged on the support unit 2, and the active control unit 4 is connected to the passive control unit 3. The dry-type air-core reactor in the embodiment of the present invention is an existing dry-type air-core reactor, which includes not only the enclosure 101, the support insulator 103 and the support 104, but also the star frame 102 arranged at the top and bottom of the enclosure 101.
[0020] In the embodiment of the present invention, the support unit 2 includes a star-shaped support top plate 201 and a star-shaped support bottom plate 203. Considering the special form, heat dissipation and insulation requirements of the dry-type air-core reactor 1, the structure of the star-shaped support top plate 201 and the star-shaped support bottom plate 203 in this embodiment imitates the star-shaped frame 102 structure of the dry-type air-core reactor 1 and is designed as a star-shaped structure, which is convenient for the heat dissipation of the dry-type air-core reactor 1, and the star-shaped support top plate 201 and the star-shaped support bottom plate 203 are both made of insulating materials; the star-shaped support top plate 201 is arranged parallel to the star-shaped support bottom plate 202. The star-shaped support top plate 201 and the star-shaped support bottom plate 202 have the same structure; the star-shaped support top plate 201 and the star-shaped support bottom plate 202 both include a plurality of star-shaped support walls 203, the active control unit 4 and the passive control unit 3 are both arranged between the star-shaped support top plate 201 and the star-shaped support bottom plate 202, the bottom of each support insulator 103 is respectively connected to the top of the corresponding star-shaped support wall 203 on the star-shaped support top plate 201, and the top of each support 104 is respectively connected to the bottom of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202. The number of star-shaped support walls 203 in this embodiment is the same as the number of post insulators 103 and posts 104, and the positions of the star-shaped support walls 203 correspond one-to-one to the positions of the post insulators 103 and posts 104. The number of star-shaped support walls 203 in this embodiment can be adjusted accordingly with the number of post insulators 103 and posts 104 of different types of dry-type air-core reactors 1. In this embodiment, the number of star-shaped support walls 203 is preferably 8.
[0021] In the embodiment of the present invention, the passive control unit 3 comprises a laminated rubber damping layer 301, a plurality of steel springs 302 and a plurality of friction energy dissipation modules 303, the bottom and top of the laminated rubber damping layer 301 are respectively connected to the middle of the top of the star-shaped support bottom plate 202 and the middle of the bottom of the star-shaped support top plate 201; Each group of friction energy dissipation modules 303 is respectively connected to the bottom of the corresponding star-shaped support wall 203 on the star-shaped support top plate 201 and the active control unit 4, the bottom of each steel spring 302 is respectively connected to the top of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202, and the top of each steel spring 302 is respectively connected to a corresponding group of friction energy dissipation modules 303.
[0022] Each group of friction energy dissipation modules 303 includes two friction energy dissipation modules 303; Each friction energy dissipation module 303 includes a friction limit slide 3031, a friction block 3032 and a limit shock-absorbing rubber 3033. The friction limit slide 3031 is opened at the bottom of the star-shaped support wall 203, and the limit shock-absorbing rubber 3033 is arranged on the inner wall of the friction limit slide 3031. Through the design of the limit shock-absorbing rubber 3033, it can be used for limiting and preventing the problem of equipment short circuit caused by excessive sliding impact; the friction block 3032 is slidably arranged inside the friction limit slide 3031, and the friction block 3032 is a cylindrical structure. The material of the friction block 3032 is PTFE (polytetrafluoroethylene), and the friction coefficient between the friction block 3032 and the friction limit slide 3031 is about 0.01~0.03; The bottom of one of the friction blocks 3032 is connected to the top of the corresponding steel spring 302 , and the bottom of the other friction block 3032 is connected to the active control unit 4 .
[0023] In the embodiment of the present invention, the laminated rubber damping layer 301 is composed of steel plates and rubber alternately stacked, and the top layer and the bottom layer are both steel plates, and the thickness of the steel plates and the rubber are both 5 mm.
[0024] In an embodiment of the present invention, the active control unit 4 includes a plurality of jacks 401, a plurality of groups of electromagnets 402 and a sensor 403, each jack 401 is respectively arranged on the top of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202, and the top of each jack 401 is respectively connected to the bottom of another corresponding friction block 3032, each group of electromagnets 402 is arranged between the laminated rubber damping layer 301 and the corresponding steel spring 302, and the sensor 403 is arranged between the star-shaped support bottom plate 202 and the star-shaped support top plate 201 and on the outer surface of the enclosure 101 of the dry-type air-core reactor 1. Each group of electromagnets 402 includes two electromagnets 402, the top and bottom of the electromagnet 402 close to the laminated rubber damping layer 301 are respectively connected to the bottom of the corresponding star-shaped support wall 203 on the star-shaped support top plate 201 and the top of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202, and the bottom of the electromagnet 402 close to the steel spring 302 is connected to the top of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202. In this embodiment, the number of jacks 401 is 8, the number of groups of electromagnets 402 is 8, and the total number of electromagnets 402 is 16, that is, a group of electromagnets 402 and one jack 401 are arranged between each lower star-shaped support wall 203 and the corresponding star-shaped support wall 203 directly above, and each group has two electromagnets 402. In addition, the electromagnet 402 in this embodiment is an AC coil electromagnet, and the shape of the electromagnet 402 is square, and both ends of the coil electromagnet 402 are wound clockwise.
[0025] In the embodiment of the present invention, the sensor 403 includes multiple groups of displacement sensors 4031 and multiple acceleration sensors 4032. The multiple acceleration sensors 4032 are evenly spaced along the circumferential direction on the outer surface of the package 101 of the dry-type air-core reactor 1. The number of acceleration sensors 4032 in this embodiment is 4. Each group of displacement sensors 4031 is respectively arranged between the corresponding star-shaped support wall 203 on the star-shaped support top plate 201 and the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202. The number of groups of displacement sensors 4031 in this embodiment is 8. Each group of displacement sensors 4031 includes two displacement sensors 4031, one of which is connected to the bottom of the corresponding star-shaped support wall 203 on the star-shaped support top plate 201, and the other displacement sensor 4031 is connected to the top of the corresponding star-shaped support wall 203 on the star-shaped support bottom plate 202. There are 16 displacement sensors 4031 in total. When the displacement sensor 4031 and the acceleration sensor 4032 detect that the dry-type air-core reactor 1 is in a vibrating state, the jack 401 and the electromagnet 402 adjust their working states according to the vibration state to suppress the vibration of the dry-type air-core reactor 1 to achieve structural stability and safety.
[0026] In the embodiment of the present invention, the active control unit 4 further includes a controller. The controller of the specific embodiment of the present invention is arranged at the bottom of the star-shaped support bottom plate 202, so as not to affect the working state of the dry-type air-core reactor 1. The controller adopts the existing control technology. The controller is respectively connected to the displacement sensor 4031 and the acceleration sensor 4032, and the controller is respectively connected to the jack 401 and the electromagnet 402. When the displacement sensor 4031 and the acceleration sensor 4032 detect the vibration state signal of the dry-type air-core reactor 1 and transmit it to the controller, the controller generates a control signal according to the vibration state signal, and controls the working state adjustment of the jack 401 and the electromagnet 402 respectively through the control signal to suppress the vibration of the dry-type air-core reactor 1. Specifically, the displacement sensor 4031 and the acceleration sensor 4032 collect the vibration direction, sliding displacement and distance data between the star-shaped support top plate 201 and the star-shaped support bottom plate 202 of the dry-type air-core reactor 1, and transmit the collected data to the controller. The controller analyzes the input data and extracts characteristic parameters of the structural vibration, such as amplitude, frequency, etc. By analyzing these parameters, the vibration state of the structure can be judged and its future vibration trend can be predicted. According to the results of the vibration analysis, the controller generates a corresponding control signal and controls the on and off power of the electromagnet 402 through the control signal, thereby controlling the horizontal and torsional displacement of the dry-type air-core reactor 1 caused by the vibration; at the same time, the jack 401 is hydraulically lifted and lowered through the control signal, thereby controlling the vertical displacement range of the dry-type air-core reactor 1 caused by the vibration. Example
[0027] The embodiment of the present invention further provides a working method of the active-passive combined star-shaped three-dimensional seismic isolation device applicable to the dry-type air-core reactor proposed in Embodiment 1, comprising the following steps: S1. Connect the bottom of each post insulator 103 of the dry-type air-core reactor 1 to the top of the corresponding star-shaped support arm 203 on the star-shaped support top plate 201, and connect the top of each post 104 of the dry-type air-core reactor 1 to the bottom of the corresponding support arm 203 on the star-shaped support bottom plate 202, and install the acceleration sensor 4032 on the outer surface of the package 101 to complete the installation of the entire active-passive combined star-shaped three-dimensional seismic isolation device; S2. When the dry-type air-core reactor 1 encounters strong winds or earthquakes, the friction block 3032 reaches the sliding friction force, driving the star-shaped support top plate 201 to slide left and right along the friction block 3032 to dissipate friction energy, and working together with the laminated rubber damping layer 301, it plays a role in horizontal and torsional vibration reduction and isolation; and the star-shaped support top plate 201 drives the steel spring 302 to play a role in vertical vibration reduction and isolation; S3, the displacement sensor 4031 and the acceleration sensor 4032 collect the vibration direction, sliding displacement and distance data between the star-shaped support top plate 201 and the star-shaped support bottom plate 202 of the dry-type air-core reactor 1, and transmit the collected data to the controller, the controller generates a control signal according to the input data, and controls the on and off of the electromagnet 402 through the control signal, thereby controlling the horizontal and torsional displacement of the dry-type air-core reactor 1 caused by the vibration; at the same time, the jack 401 is hydraulically lifted and lowered through the control signal, thereby controlling the vertical displacement range of the dry-type air-core reactor 1 caused by the vibration; specifically: S31, set the horizontal safety displacement of dry-type air-core reactor 1 to x min , the vertical safe displacement is y min , the safety acceleration of dry-type air-core reactor 1 is a min , the horizontal displacement of the dry-type air-core reactor 1 measured by the displacement sensor 4031 is x, the vertical displacement is y, and the acceleration in any direction of the dry-type air-core reactor 1 measured by the acceleration sensor 4032 is a; S32, the displacement sensor 4031 and the acceleration sensor 4032 feed back the measured information to the controller, the controller processes and analyzes the transmitted information data, generates a control signal, transmits the control signal to the electromagnet 402 through the data transmission line for on-off control, and transmits the control signal to the jack 401 through the data transmission line for hydraulic lifting control. The control process is as follows: S321, when the state of the dry-type air-core reactor 1 measured by all displacement sensors 4031 and acceleration sensors 4032 is x<x min andy<ymin anda<a min When , the active control units do not work, and energy is consumed only through the passive control units; S322, when the displacement of the dry-type air-core reactor 1 measured by any displacement sensor 4031 and the acceleration sensor 4032 is x ≥ x min or y≥y min or a≥a min When the controller controls the electromagnet 402 to intermittently switch on and off, the electromagnet 402 generates suction and repulsion alternately, and moves the star-shaped support arms 203 of the star-shaped support top plate 201 in eight directions to the original position. At the same time, the controller controls the jack 401 to perform hydraulic lifting, and moves the star-shaped support arms 203 of the star-shaped support top plate 201 in eight directions to the original position, thereby realizing synchronous three-dimensional energy consumption; S4, when the data collected by the displacement sensor 4031 and the acceleration sensor 4032 indicate that the vibration has ended, the controller performs power on / off control and hydraulic lifting control on the electromagnet 402 and the jack 401 through control signals to achieve self-reset of the entire device, which specifically includes the following steps: S41. When the state of the dry-type air-core reactor 1 measured by all acceleration sensors 4032 is a=0, it is determined that the vibration is ended. At this time, the controller controls the electromagnet 402 to intermittently turn on and off the power, so that the electromagnet 402 alternately generates suction and repulsion, and resets the star-shaped support arms 203 of the star-shaped support top plates 201 in eight directions to the original position until the displacement of the dry-type air-core reactor 1 is x=0. At the same time, the controller controls the jack 401 to perform hydraulic lifting, and resets the star-shaped support arms 203 of the star-shaped support top plates 201 in eight directions to the original position until the displacement of the dry-type air-core reactor 1 is y=0, thereby realizing the self-reset of the dry-type air-core reactor 1 after vibration.
[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactors, characterized in that: It comprises a three-dimensional seismic isolation mechanism arranged between a support insulator (103) and a support (104) of a dry-type air-core reactor (1); The three-dimensional seismic isolation mechanism comprises a support unit (2), an active control unit (4) and a passive control unit (3); the top of the support unit (2) is connected to the bottom of a support insulator (103); the bottom of the support unit (2) is connected to the top of a support (104); the active control unit (4) and the passive control unit (3) are both arranged on the support unit (2), and the active control unit (4) and the passive control unit (3) are connected.
2. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 1 is characterized in that: The support unit (2) comprises a star-shaped support top plate (201) and a star-shaped support bottom plate (203), wherein the star-shaped support top plate (201) is arranged in parallel directly above the star-shaped support bottom plate (202), and the star-shaped support top plate (201) and the star-shaped support bottom plate (202) have the same structure; The star-shaped support top plate (201) and the star-shaped support bottom plate (202) both include a plurality of star-shaped support walls (203); the active control unit (4) and the passive control unit (3) are both arranged between the star-shaped support top plate (201) and the star-shaped support bottom plate (202); the bottom of each support insulator (103) is respectively connected to the top of a corresponding star-shaped support wall (203) on the star-shaped support top plate (201); and the top of each support (104) is respectively connected to the bottom of a corresponding star-shaped support wall (203) on the star-shaped support bottom plate (202).
3. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 2 is characterized in that: The passive control unit (3) comprises a laminated rubber damping layer (301), a plurality of steel springs (302) and a plurality of groups of friction energy dissipation modules (303); the bottom and top of the laminated rubber damping layer (301) are respectively connected to the middle of the top of the star-shaped support bottom plate (202) and the middle of the bottom of the star-shaped support top plate (201); Each group of friction energy dissipation modules (303) is respectively connected to the bottom of a corresponding star-shaped support wall (203) on the star-shaped support top plate (201) and the active control unit (4); the bottom of each steel spring (302) is respectively connected to the top of a corresponding star-shaped support wall (203) on the star-shaped support bottom plate (202); and the top of each steel spring (302) is respectively connected to a corresponding group of friction energy dissipation modules (303).
4. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 3 is characterized in that: Each group of friction energy dissipation modules (303) includes two friction energy dissipation modules (303); Each friction energy dissipation module (303) comprises a friction limit slide groove (3031), a friction block (3032) and a limit shock absorbing rubber (3033); the friction limit slide groove (3031) is provided at the bottom of the star-shaped support wall (203); the limit shock absorbing rubber (3033) is arranged on the inner wall of the friction limit slide groove (3031); and the friction block (3032) is slidably arranged inside the friction limit slide groove (3031); The bottom of one of the friction blocks (3032) is connected to the top of the corresponding steel spring (302), and the bottom of the other friction block (3032) is connected to the active control unit (4).
5. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 3 is characterized in that: The laminated rubber damping layer (301) is composed of steel plates and rubber alternately stacked, and the top layer and the bottom layer are both steel plates.
6. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 4, characterized in that: The active control unit (4) comprises a plurality of jacks (401), a plurality of groups of electromagnets (402) and a sensor (403), each jack (401) being arranged on the top of a corresponding star-shaped support wall (203) on a star-shaped support bottom plate (202), and the top of each jack (401) being connected to the bottom of a corresponding other friction block (3032), each group of electromagnets (402) being arranged between a laminated rubber damping layer (301) and a corresponding steel spring (302), and the sensor (403) being arranged between the star-shaped support bottom plate (202) and the star-shaped support top plate (201) and on the outer surface of an envelope (101) of the dry-type air-core reactor (1).
7. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactor according to claim 6, characterized in that: Each group of electromagnets (402) includes two electromagnets (402), the top and bottom of the electromagnet (402) close to the laminated rubber damping layer (301) are respectively connected to the bottom of the corresponding star-shaped support wall (203) on the star-shaped support top plate (201) and the top of the corresponding star-shaped support wall (203) on the star-shaped support bottom plate (202), and the bottom of the electromagnet (402) close to the steel spring (302) is connected to the top of the corresponding star-shaped support wall (203) on the star-shaped support bottom plate (202).
8. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactors according to claim 6, characterized in that: The sensor (403) comprises a plurality of groups of displacement sensors (4031) and a plurality of acceleration sensors (4032), the plurality of acceleration sensors (4032) being evenly spaced along the circumferential direction on the outer surface of the package (101) of the dry-type air-core reactor (1), and each group of displacement sensors (4031) being respectively arranged between a corresponding star-shaped support wall (203) on a star-shaped support top plate (201) and a corresponding star-shaped support wall (203) on a star-shaped support bottom plate (202); Each group of displacement sensors (4031) comprises two displacement sensors (4031), wherein one displacement sensor (4031) is connected to the bottom of a corresponding star-shaped support wall (203) on a star-shaped support top plate (201), and the other displacement sensor (4031) is connected to the top of a corresponding star-shaped support wall (203) on a star-shaped support bottom plate (202).
9. The active-passive combined star-shaped three-dimensional seismic isolation device suitable for dry-type air-core reactors according to claim 8, characterized in that: The active control unit (4) further comprises a controller, wherein the controller is respectively connected to the displacement sensor (4031) and the acceleration sensor (4032), and the controller is respectively connected to the jack (401) and the electromagnet (402).
10. A working method of the active-passive combined star-shaped three-dimensional seismic isolation device applicable to dry-type air-core reactors according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Connecting the bottom of each support insulator (103) of the dry-type air-core reactor (1) to the top of the corresponding star-shaped support arm (203) on the star-shaped support top plate (201) in a one-to-one correspondence, and connecting the top of each support (104) of the dry-type air-core reactor (1) to the bottom of the corresponding support arm (203) on the star-shaped support bottom plate (202) in a one-to-one correspondence, thereby completing the installation of the entire device; S2. When the dry-type air-core reactor (1) encounters vibrations such as strong winds or earthquakes, the friction block (3032) reaches a sliding friction force, driving the star-shaped support top plate (201) to slide left and right along the friction block (3032) to dissipate friction energy, and cooperates with the laminated rubber damping layer (301) to play a role in horizontal and torsional vibration reduction and isolation; and the star-shaped support top plate (201) drives the steel spring (302) to play a role in vertical vibration reduction and isolation; S3, the displacement sensor (4031) and the acceleration sensor (4032) collect vibration direction, sliding displacement and distance data between the star-shaped support top plate (201) and the star-shaped support bottom plate (202) of the dry-type air-core reactor (1), and transmit the collected data to the controller, the controller generates a control signal according to the input data, and controls the on and off of the electromagnet (402) through the control signal, thereby controlling the horizontal and torsional displacement of the dry-type air-core reactor (1) caused by the vibration; at the same time, the jack (401) is hydraulically lifted and lowered through the control signal, thereby controlling the vertical displacement range of the dry-type air-core reactor (1) caused by the vibration; S4. When the data collected by the displacement sensor (4031) and the acceleration sensor (4032) indicate that the vibration has ended, the controller uses control signals to respectively control the on / off power supply and the hydraulic lifting and lowering of the electromagnet (402) and the jack (401), thereby realizing self-reset of the entire device.