CN104790554A - Three-direction multiple annular type tuned mass damper damping device - Google Patents
Three-direction multiple annular type tuned mass damper damping device Download PDFInfo
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Abstract
The invention discloses a three-direction multiple annular type tuned mass damper damping device, and relates to a damping device which aims at reducing the device responses of a high-rise knob insulator type electrical device under the seismic oscillation effect and reducing the seismic damage of the high-rise knob insulator type electrical device. The three-direction multiple annular type tuned mass damper damping device comprises a fixed supporting device, a slide supporting device, a mass device and a rigidity device, wherein the fixed supporting device and the slide supporting device are each of an annular type cavity structure with three faces closed and one face opened, and the annular type hollow structures are the same in inner diameter; the slide supporting device is concentrically installed in a cavity of the fixed supporting device, the mass device surrounds the opened face of the slide supporting device, and the rigidity device is arranged in a closed cavity formed by the slide supporting device and the mass device and arranged in a gap between the lower end of the slide supporting device and the inner wall of the fixed supporting device. Compared with a traditional high-rise knob insulator type electrical device damping device, the displacement of the device can be better controlled.
Description
Technical field
The present invention relates to a kind of damping device, be specifically related to a kind of three-dimensional multiple ring type tuned mass damper damping device, belong to damping device technical field.
Background technology
Earthquake disaster has sudden and crushing, and the safety of life and property of the mankind in serious threat.Towering porcelain knob type electric fixtures is applied widely in power system, and along with the development of power industry, the grade of power transmission and transforming equipment is more and more higher, high voltage electric equipment especially superhigh voltage DC power transmission and transforming equipment is more and more towering and fine and soft, top quality is increasing, higher to the requirement of its anti-seismic performance.In all previous macroseism both domestic and external, towering porcelain knob type electric fixtures earthquake is all very serious, guarantees that the normal work under geological process of towering porcelain knob type electric fixtures is most important to guarantee safe operation of power system.
Damage type in the earthquake of towering porcelain knob type electric fixtures mainly insulator end is broken and leakage of oil.For this situation problem, lot of domestic and international scholar takes different measures to improve its anti-seismic performance.What have improves lateral rigidity by measures such as bracing wire reinforcings, what have arranges metal damper to the seismic energy that dissipates at lower bracket place, also have and adopt base isolation technology input earthquake and electric fixtures to be isolated, this is comprising laminated rubber bases and friction pendulum support etc.
Tuned mass damper (TMD) is a kind of passive seismic control device being widely used in civil engineering structure, it can according to the seismic calamity of towering porcelain knob type electric fixtures, reduces acceleration and the Root Stress reaction of towering porcelain knob type electric fixtures under earthquake motion effect.
TMD is made up of quality system, spring system and damping system.When earthquake occurs, controlled device starts vibration under earthquake motion effect, the vibration of controlled device drives TMD system jointly to vibrate, because be that elasticity is connected between TMD with controlled device, relative motion can be produced between TMD and controlled device, if TMD natural frequency to be adjusted to the desired value (exact value can by theory calculate be determined) close with controlled towering porcelain knob type electric fixtures natural frequency, TMD can be supplied to equipment one power contrary with equipment inertia force direction all the time, thus the amplitude of making a concerted effort reduced on the equipment of acting on, also the dynamic response of equipment during earthquake motion effect is just reduced.From the angle of power consumption, damping is set to TMD, when being occurred by the motion dissipation earthquake of TMD, ground passes to the energy of equipment, the consumption of energy is focused in TMD device, this reduces the required energy absorbed of equipment itself, alleviate the damage that equipment itself may occur, thus reach the object alleviating equipment earthquake.
Existing method mainly contains stay-supported shock-dampening method, metal damper shock-dampening method, base isolation technical shock method, insulated full-enclosed formula combined electrical apparatus power distribution equipment shock-dampening method.
(1) stay-supported shock-dampening method: this method is static(al) reinforcing method.The ability of equipment opposing horizontal seismic force is improved by increasing superfluous constraint.This method principle is simply clear, but this reinforcing mode is easily damaged at pull bar or bracing wire fixed position in earthquake, forms new weak link, and simultaneously because the mounting means of bracing wire and the requirement of electrical insulation, this method is large to space requirement.
(2) lead alloy damper shock-dampening method: by installing metal damping shock absorber, changes the frequency of equipment, increases the damping of equipment, reduce the earthquake response of equipment.Current the method is more existing application at home, Zhang Xuesong gives the shaketalle test result of this damper at article " the 220kV line breaker shaketalle test of the plumbous damper of Installation of New Type ", result shows that novel lead alloy damper can reduce acceleration and the displacement at line breaker top, and bottom porcelain bushing shell maximum strain can reduce more than 50%.But the earthquake motion that the method is enriched for long period composition and the damping effect distinguishingly shaken containing this two class of Near-field ground motion of velocity pulse relatively weak.
(3) laminated rubber damping bearing shock-dampening method: by changing device support condition, the natural vibration period of extension device, avoiding the predominant period section of earthquake motion, thus reduce the dynamic response of top equipment under earthquake motion effect, dissipation energy can also be carried out by increasing the measures such as lead for retractable pencil simultaneously.But there is following shortcoming in this method, first be that rubber is easily aging, next is the absolute displacement reaction that base isolation can increase shock isolating pedestal top equipment usually, most towering porcelain knob type electric fixtures upper end all has wire to connect, easily there is the situation that equipment destroys because wire pulls in the increase of displacement, 3rd is shock isolating pedestal not tension, even if do not consider aforementioned two shortcomings of laminated rubber damping bearing shock-dampening method, this method also can only be used for the transformer upper sleeve damping that tensile stress does not appear in substrate usually, be difficult to be applied to the large-scale current transformer being directly installed on ground, the damping of the towering porcelain knob type such as arrester electric fixtures.
(4) Friction pendulum system shock-dampening method: by changing device support condition, the natural vibration period of extension device, avoid the predominant period section of earthquake motion to reduce the dynamic response of equipment.Friction-pendulum shock-insulation support combines the concept of sliding bearing and pendular motion, and after employing earthquake isolating equipment, the frequency of system is determined, simultaneously by the Friction dissipation energy of slide plane primarily of the geometric parameter of pendulum.Friction-pendulum shock-insulation device has a large amount of application at building field, but also there are some problems in the damping application of porcelain knob type electric fixtures, and one to be increased top equipment displacement, two are this shock isolating pedestal not tensions.
(5) totally enclosed type combined electrical apparatus power distribution equipment (GIS) shock-dampening method: different from ordinary distribution device, line breaker, isolating switch, fast or the at a slow speed element such as earthing switch, current transformer, arrester, bus are passed through closed composition by GIS, be installed in a storehouse being full of the SF6 gas of certain pressure, electrical insulation can rely on SF6 gas in storehouse to ensure, SF6 gas also plays arc-extinguishing medium simultaneously.The superiority of this method is a lot, and floor space is little, and apparatus arrangement center of gravity is low, and that at home and abroad also applies is more and more.But GIS up-front investment is large, be 30-40 times of distributing element investment; And GIS combination electric appliance is once break down, consequence is much more serious than open type transformer station, and the fault of an element may be that complete equipment lost efficacy or damage.And the repair time of GIS is also longer than conventional equipment many.
Summary of the invention
The object of the invention is to solve when prior art alleviates the earthquake of porcelain knob type electric fixtures under earthquake motion effect that dynamic respond is large, installation and maintenance are inconvenient, reduce the problem of towering porcelain knob type electric fixtures earthquake weak effect under the response of control appliance earthquake displacement and convenient prerequisite of installing.
Technical scheme of the present invention is: three-dimensional multiple ring type tuned mass damper damping device, comprise two hemizonids, two hemizonids are butted into a torus, each hemizonid comprises fixed support device, sliding support, quality device and stiffness means, described fixed support device and sliding support are the uncovered ring type cavity structure of three closed one sides, described sliding support is arranged in the cavity of fixed support device with one heart, quality device is enclosed in the open face of sliding support, stiffness means is located in the gap in closed cavity that sliding support and quality device form and between sliding support lower end and fixed support device inwall.
Described fixed support device comprises upper limit plate, lower limiting board, fixing ring flat-plate and some gusseted parts, and described upper limit plate and lower limiting board are connected by fixing ring flat-plate, and gusseted part annular array is installed on the lower end of lower limiting board.
The edge of described lower limiting board is provided with the first Bolt plate and some bolts, and the fixed support device of two hemizonids is connected by the bolt on the first Bolt plate and forms torus fixed support device.
Described sliding support comprises slip limiting plate, lower slider limiting plate, middle slip limiting plate and slip ring flat-plate, described upper slip limiting plate, middle slip limiting plate and lower slider limiting plate are connected by slip ring flat-plate, described slip ring flat-plate is attached at fixing ring flat-plate outer wall place, there is vertical relative motion in sliding support, by the Friction dissipation energy between fixing ring flat-plate and slip ring flat-plate under the effect of vertical seismic motion and between fixed support device.
The edge of described upper slip limiting plate is provided with the second Bolt plate and some bolts, and the sliding support of two hemizonids is connected by the bolt on the second Bolt plate.
Described quality device is some half-ring masses, one end of described ring type mass is provided with Tenon, the other end is provided with tenon, the half-ring mass of two hemizonids to be connected formation quality loop by dovetail manner, and described quality loop is enclosed between slip limiting plate and middle slip limiting plate and between middle slip limiting plate and lower slider limiting plate.During multiple ring type tuned mass damper work, there is relative sliding between quality loop and limiting plate, Friction dissipation energy.The material of the design friction co-efficient value determination frictional contact surface obtained according to theory calculate and surface roughness.
Described stiffness means comprises rubber ring and two ring-springs, described ring-spring is located at slip limiting plate respectively, middle slip limiting plate, in the cavity that slip ring flat-plate and quality loop enclose, described rubber ring is arranged between lower limiting board and lower slider limiting plate, each quality loop and corresponding ring-spring are one group of tuned mass damper, control the different vibration shape respectively, described quality loop applies the power contrary with equipment level vibration acceleration direction by extruding ring-spring to bracing or strutting arrangement, sliding support extruding rubber ring applies the power contrary with equipment vertical motion acceleration direction to bracing or strutting arrangement, reach the object that effect suppresses the vibration of this frequency component, the major frequency components of earthquake motion is between 1-10Hz, there is certain frequency bandwidth, meanwhile, the vibration of equipment is the result of multistage modes coupling, therefore invention have employed multiple TMD, each quality loop and corresponding spring are equivalent to a certain frequency band range of an independently TMD control appliance, multiple TMD acting in conjunction is to realize the control to more broad frequency range, the utilization of multiple TMD reduces the sensitivity of damping effect to the frequency spectrum difference of earthquake motion, add the stability of damping.
Described three-dimensional multiple ring type tuned mass damper damping device comprises energy-dissipating device, energy-dissipating device comprises some annular friction backing plates, annular backing plate is arranged between half-ring mass and upper slip limiting plate respectively, between half-ring mass and middle slip limiting plate and between half-ring mass and lower slider limiting plate, during multiple ring type tuned mass damper work, two quality loops are due to inertia and the relative motion of bracing or strutting arrangement occurred level, and then drive semicircular ring friction backing plate and lower slider limiting plate, middle slip limiting plate, relative motion between upper slip limiting plate, by Friction dissipation energy.
Described three-dimensional multiple ring type tuned mass damper damping device comprises dust device, and dust device, for hiding dust hood, reduces the device in use adverse effect to device damping such as rain, snow, dust.
The present invention compared with prior art has following effect: three-dimensional of the present invention represents the damping that it can realize equipment X, Y and Z-direction dynamic response, this device of multiple representation has and at least comprises two for tuning mass body, and ring type refers to shape facility and the installation form of device.Essence remains the operating principle of tuned mass damper.Device damping rate of the present invention is large, and damping effect is stablized, little to space requirement, substantially there is not problem of aging.Finite element modelling result shows: after employing this method, average peak displacement damping ratio is 50%, and average peak acceleration damping ratio is about 40%; The damping stability of triple tuned mass damper is also very outstanding, for the artificial ground shaking chosen according to all kinds Site Design response spectrum and shake natively and all have stable damping effect.Compare with bracing wire reinforcement means, little to space requirement, new weak part can not be formed; Compare with metal damping shock absorption method, the stability occurred for dissimilar earthquake motion table is better; In addition, be different from absolute displacement that base isolation sacrifices shock isolating pedestal top equipment to reduce the peak stress of the peak accelerator of equipment, insulator root and flange joint, this method can realize the reduction to peak accelerator and peak displacement simultaneously, achieve the target reducing towering porcelain knob type electric fixtures earthquake, and the towering porcelain knob type electric fixtures type be suitable for is also more extensive.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention halfbody structural representation;
Fig. 2 is the zoomed-in view of part A in Fig. 1;
Fig. 3 is the schematic diagram that apparatus, with of the present invention hides dust hood;
Fig. 4 is the structural front view of device of the present invention not with hiding dust hood;
Fig. 5 is the enlarged diagram of C part in Fig. 4;
Fig. 6 is the left view of Fig. 4;
Fig. 7 is fixed support device structural representation of the present invention;
The structural representation at Fig. 8 another visual angle of fixed support device of the present invention;
Fig. 9 is the sliding support structural representation of apparatus of the present invention;
Figure 10 is the half-ring mass block structure schematic diagram of apparatus of the present invention;
Figure 11 is the enlarged diagram of part B in Figure 10;
Figure 12 is that half-ring mass is interconnected schematic diagram;
Figure 13 is ring-spring structural representation;
Figure 14 is friction shim structural representation;
Figure 15 hides dust hood structural representation;
The scheme of installation of Figure 16 apparatus of the present invention and porcelain knob electric fixtures.
In figure, 1-gusseted part, 2-first Bolt plate, 3-bolt, 4-lower limiting board, 5-fixes ring flat-plate, 6-upper limit plate, 7-lower slider limiting plate, 8-slip ring flat-plate, slide in 9-limiting plate, 10-slides limiting plate, 11-second Bolt plate, 12-half-ring mass, 13-tenon, 14-Tenon, 15-ring-spring, 16-rubber ring, 17-rubs backing plate, and 18-hides dust hood.
Detailed description of the invention
Accompanying drawings the specific embodiment of the present invention, the three-dimensional multiple ring type tuned mass damper damping device of present embodiment, comprise two hemizonids, two hemizonids are butted into a torus, each hemizonid comprises fixed support device, sliding support, quality device, stiffness means, energy-dissipating device and dust device, described fixed support device and sliding support are the ring type cavity structure that akin three the closed one sides of internal diameter are uncovered, described sliding support is arranged in the cavity of fixed support device with one heart, quality device is enclosed in the open face of sliding support, stiffness means is located in the gap in closed cavity that sliding support and quality device form and between sliding support lower end and fixed support device inwall.
Described fixed support device comprises upper limit plate 6, lower limiting board 4, fixing ring flat-plate 5 and some gusseted parts 1, and described upper limit plate 6 and lower limiting board 4 are connected by fixing ring flat-plate 5, and gusseted part 1 annular array is installed on the lower end of lower limiting board 4.
The fixed support device that the edge of described lower limiting board 4 is provided with the first Bolt plate 2 and some bolts 3, two hemizonids is connected by the bolt 3 on the first Bolt plate 2.
Described sliding support comprises slip limiting plate 10, lower slider limiting plate 7, middle slip limiting plate 9 and slip ring flat-plate 8, described upper slip limiting plate 10, middle slip limiting plate 9 and lower slider limiting plate 7 are connected by slip ring flat-plate 8, and described slip ring flat-plate 8 is attached at fixing ring flat-plate 5 outer wall place.
The sliding support that the edge of described upper slip limiting plate 10 is provided with the second Bolt plate 11 and some bolts 3, two hemizonids is connected by the bolt 3 on the second Bolt plate 11 and forms sliding support ring body.
Described quality device comprises two semicircular half-ring masses 12, one end of described half-ring mass 12 is provided with Tenon 14, the other end is provided with tenon 13, the half-ring mass 12 of two hemizonids to be connected formation quality loop by dovetail manner, and described quality loop is enclosed between slip limiting plate 10 and middle slip limiting plate 9 and between middle slip limiting plate 9 and lower slider limiting plate 7.
Described stiffness means comprises rubber ring 16 and two ring-springs 15, described ring-spring 15 is located in the cavity that slip limiting plate 10, middle slip limiting plate 9, slip ring flat-plate 8 and quality loop enclose respectively, and described rubber ring 16 is arranged between lower limiting board 4 and lower slider limiting plate 7.
Energy-dissipating device comprises some annular friction backing plates 17, and described annular friction backing plate 17 is arranged between half-ring mass 12 and upper slip limiting plate 10, between half-ring mass 12 and middle slip limiting plate 9 and between half-ring mass 12 and lower slider limiting plate 7 respectively.
Dust device is for hiding dust hood 18, and dust device is fixedly connected with upper limit plate 6 by bolt.
As shown in figure 16, three-dimensional dual ring type tuned mass damper damping device is installed on the metal end that porcelain knob type electric fixtures is connected with porcelain bushing shell top, in order to reduce acceleration peak value, the displacement peak value of porcelain knob type electric fixtures under earthquake motion effect.
Described fixing ring flat-plate 5 adheres to metal end outer wall, and ring-spring 15 is installed on inside quality loop, the outside of slip ring flat-plate 8, and ring-spring 15 contacts with slip ring flat-plate 8 naturally with quality loop, does not establish linkage.
This device can realize the control to the multistage vibration shape, and each quality loop is one group of tuned mass damper with corresponding ring-spring 15, controls the different vibration shape respectively; Meanwhile, sliding support, ring-spring 15, quality loop arrange mass as one and rubber ring forms the TMD that controls vertical motion, realizes the control to vertical principal mode.During non-earthquake state, semicircular ring mass 12 is in the diametric centre position of limiting plate shown in Figure 11, rubber ring 16 be subject to sliding support, ring-spring 15, quality loop three Action of Gravity Field be in compressive state.When earthquake occurs, quality loop drives relative motion between friction backing plate limiting plate, and sliding support under the effect of vertical seismic motion and between fixed support device, vertical relative motion occurs, by Friction dissipation energy simultaneously.Quality loop applies the power contrary with equipment level vibration acceleration direction by extruding ring-spring 15 to bracing or strutting arrangement, vertical mass body applies the power contrary with equipment vertical motion acceleration direction by extruding rubber ring 16 to bracing or strutting arrangement, reduce the dynamic response of towering porcelain knob type equipment, reach the object alleviating towering porcelain knob type electric fixtures earthquake.The seismic fortification intensity of equipment operating area is determined according to " building aseismicity specification " GB50011, the quality of bond quality ring and control the external diameter that frequency values corresponding to the vibration shape two parameters can determine lower limiting board 4, in conjunction with the mass body of sliding support, ring-spring 15, quality loop composition quality and control the stroke that frequency values corresponding to the vibration shape two parameters can determine required for sliding support.
According to the design feature of towering porcelain knob type electric fixtures, three-dimensional multiple ring type tuned mass damper damping device is used to reduce the earthquake of towering porcelain knob type electric fixtures herein.The damping of current domestic and international towering porcelain knob type electric fixtures did not adopt multiple tuned mass dampers; Meanwhile, the damping that multiple tuned mass dampers is used for towering porcelain knob type electric fixtures by anyone or tissue is also had no.Multiple for three-dimensional ring type tuned mass damper damping device is applied to the damping of porcelain knob type electric fixtures and belongs to pioneering.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (9)
1. three-dimensional multiple ring type tuned mass damper damping device, it is characterized in that: comprise two hemizonids, two hemizonids are butted into a torus, each hemizonid comprises fixed support device, sliding support, quality device and stiffness means, described fixed support device and sliding support are the uncovered ring type cavity structure of three closed one sides, described sliding support is arranged in the cavity of fixed support device with one heart, quality device is enclosed in the open face of sliding support, stiffness means is located in the gap in closed cavity that sliding support and quality device form and between sliding support lower end and fixed support device inwall.
2. three-dimensional multiple ring type tuned mass damper damping device according to claim 1, it is characterized in that: described fixed support device comprises upper limit plate (6), lower limiting board (4), fixing ring flat-plate (5) and some gusseted parts (1), described upper limit plate (6) and lower limiting board (4) are connected by fixing ring flat-plate (5), and gusseted part (1) annular array is installed on the lower end of lower limiting board (4).
3. three-dimensional multiple ring type tuned mass damper damping device according to claim 2, it is characterized in that: the edge of described lower limiting board (4) is provided with the first Bolt plate (2) and some bolts (3), the fixed support device of two hemizonids is connected by the bolt (3) on the first Bolt plate (2).
4. three-dimensional multiple ring type tuned mass damper damping device according to claim 3, it is characterized in that: described sliding support comprises slip limiting plate (10), lower slider limiting plate (7), middle slip limiting plate (9) and slip ring flat-plate (8), described upper slip limiting plate (10), middle slip limiting plate (9) and lower slider limiting plate (7) are connected by slip ring flat-plate (8), and described slip ring flat-plate (8) is attached at fixing ring flat-plate (5) outer wall place.
5. three-dimensional multiple ring type tuned mass damper damping device according to claim 4, it is characterized in that: the edge of described upper slip limiting plate (10) is provided with the second Bolt plate (11) and some bolts (3), the sliding support of two hemizonids is connected by the bolt (3) on the second Bolt plate (11).
6. three-dimensional multiple ring type tuned mass damper damping device according to claim 5, it is characterized in that: described quality device is half-ring mass (12), one end of described ring type mass (12) is provided with Tenon (14), the other end is provided with tenon (13), the half-ring mass (12) of two hemizonids to be connected formation quality loop by dovetail manner, and described quality loop is enclosed between slip limiting plate (10) and middle slip limiting plate (9) and between middle slip limiting plate (9) and lower slider limiting plate (7).
7. three-dimensional multiple ring type tuned mass damper damping device according to claim 6, it is characterized in that: described stiffness means comprises rubber ring (16) and two ring-springs (15), described rubber ring (16) is arranged between lower limiting board (4) and lower slider limiting plate (7), and described ring-spring (15) is located in the cavity that slip limiting plate (10), middle slip limiting plate (9), slip ring flat-plate (8) and quality loop enclose respectively.
8. three-dimensional multiple ring type tuned mass damper damping device according to claim 7, it is characterized in that: described three-dimensional multiple ring type tuned mass damper damping device comprises energy-dissipating device, energy-dissipating device comprises some annular friction backing plates (17), and described annular friction backing plate (17) is arranged between half-ring mass (12) and upper slip limiting plate (10), between half-ring mass (12) and middle slip limiting plate (9) and between half-ring mass (12) and lower slider limiting plate (7) respectively.
9. three-dimensional multiple ring type tuned mass damper damping device according to above arbitrary claim, is characterized in that: described three-dimensional multiple ring type tuned mass damper damping device comprises dust device, and dust device is for hiding dust hood (18).
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| CN201510205024.5A CN104790554B (en) | 2015-04-27 | 2015-04-27 | Three-direction multiple annular type tuned mass damper damping device |
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| CN201510205024.5A CN104790554B (en) | 2015-04-27 | 2015-04-27 | Three-direction multiple annular type tuned mass damper damping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422711A (en) * | 2015-12-31 | 2016-03-23 | 中国地震局工程力学研究所 | Overhead type MTMD (multiple tuned mass dampers) damping device |
| CN113680005A (en) * | 2021-08-25 | 2021-11-23 | 郑州航空工业管理学院 | Body-building apparatus counter weight device |
| CN115030233A (en) * | 2022-07-25 | 2022-09-09 | 中国地震局工程力学研究所 | Three-dimensional omnidirectional shearing type vibration and vibration double-control device |
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| CN105422711A (en) * | 2015-12-31 | 2016-03-23 | 中国地震局工程力学研究所 | Overhead type MTMD (multiple tuned mass dampers) damping device |
| CN113680005A (en) * | 2021-08-25 | 2021-11-23 | 郑州航空工业管理学院 | Body-building apparatus counter weight device |
| CN115030233A (en) * | 2022-07-25 | 2022-09-09 | 中国地震局工程力学研究所 | Three-dimensional omnidirectional shearing type vibration and vibration double-control device |
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