CN104790554B - 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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- CN104790554B CN104790554B CN201510205024.5A CN201510205024A CN104790554B CN 104790554 B CN104790554 B CN 104790554B CN 201510205024 A CN201510205024 A CN 201510205024A CN 104790554 B CN104790554 B CN 104790554B
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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 is and in particular to a kind of multiple ring type tuned mass damper damping of three-dimensional fills
Put, belong to amping device technical field.
Background technology
Earthquake disaster has sudden and crushing, seriously threatens the safety of life and property of the mankind.Towering porcelain knob type
Electrical equipment is applied widely in power system, and the development with power industry, and the grade of power transmission and transforming equipment is more next
Higher, high voltage electric equipment especially superhigh voltage DC power transmission and transforming equipment is more and more towering and fine and soft, and top quality is increasing,
Requirement to its anti-seismic performance is higher.In all previous macroseism both domestic and external, towering porcelain knob type electrical equipment earthquake is all very serious, really
Protect towering porcelain knob type electrical equipment normal work under geological process most important to guarantee safe operation of power system.
Damage type in towering porcelain knob type electrical equipment earthquake is mainly insulator end and breaks and oil leak.For this
Situation problem, lot of domestic and international scholar takes different measures to improve its anti-seismic performance.Being reinforced etc. by bracing wire of having is arranged
Apply to improve lateral rigidity, the setting metal damper at lower bracket having to dissipate seismic energy, also have using substrate every
Shake technology, by input earthquake and electrical equipment isolation, includes laminated rubber bases and friction pendulum support etc. among these.
Tuned mass damper (tmd) is a kind of passive seismic control device being widely used in civil engineering structure, it
The acceleration of towering porcelain knob type electrical equipment under earthquake motion effect according to the seismic calamity of towering porcelain knob type electrical equipment, can be reduced
With Root Stress reaction.
Tmd is made up of quality system, spring system and damping system.When earthquake occurs, controlled device is in earthquake action
With under start to vibrate, the vibration of controlled device drives tmd system jointly to vibrate because between tmd and controlled device be elasticity even
Connect, relative motion between tmd and controlled device, can be produced, if the tmd natural frequency of vibration is adjusted to and the towering porcelain knob being controlled
The close desired value of the type electrical equipment natural frequency of vibration (exact value can be determined by Theoretical Calculation), tmd is possible to be supplied to and sets
A standby power in opposite direction with equipment inertia force all the time, thus reducing the amplitude made a concerted effort on the equipment of acting on, also just drops
The dynamic response of equipment during low earthquake motion effect.From the perspective of power consumption, set damping to tmd, by the motion consumption of tmd
When scattered earthquake occurs, ground passes to the energy of equipment, and the consumption of energy is focused in tmd device, this reduces equipment originally
The energy absorbing required for body, the damage that the equipment that alleviates is likely to occur in itself, thus reached the purpose mitigating equipment earthquake.
Existing method mainly have 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) method for strengthening.Improve equipment opposing water by increasing superfluous constraint
The ability of level land brisance.This method principle is simply clear, but this reinforcing mode is easily fixed in pull bar or bracing wire in earthquake
Position is damaged, and forms new weak link, simultaneously as the requirement of the mounting means of bracing wire and electric insulation, this method pair
Space requirement is big.
(2) lead alloy damper shock-dampening method: by installing metal damping shock absorber, change frequency, the increase of equipment
The damping of equipment, reduces the earthquake response of equipment.The method has some applications at home at present, and Zhang Xuesong " installs in article
The 220kv chopper shaketalle test of NEW Pb amortisseur " give the shaketalle test result of this amortisseur, result shows
New lead alloy damper can reduce acceleration and the displacement at chopper top, and bottom porcelain bushing shell maximum strain can reduce
More than 50%.But the method is special for the abundant earthquake motion of long period composition and this two class of the Near-field ground motion containing velocity pulse
The damping effect of different earthquake motion is relatively weak.
(3) laminated rubber damping bearing shock-dampening method: by change equipment supporting condition, the natural vibration period of extension device,
Avoiding the predominant period section of earthquake motion, thus reducing dynamic response under earthquake motion effect for the top equipment, can also lead to simultaneously
Cross the measures such as increase lead for retractable pencil and carry out dissipation energy.But this method suffers from the drawback that, it is that rubber is easily aging first, next to that basic
Shock insulation would generally increase the absolute displacement reaction of shock isolating pedestal top equipment, and most towering porcelain knob type electrical equipment upper ends are equal
Wire is had to connect, the increase of displacement easily the situation that equipment destroys because wire pulls, and the 3rd is shock isolating pedestal not tension,
Even if not considering the both of the aforesaid shortcoming of laminated rubber damping bearing shock-dampening method, this method is generally also only used for substrate and does not go out
The transformator upper sleeve damping of existing tension, is difficult to apply to be directly installed on large-scale current transformer, the spark gap on ground
Damping etc. towering porcelain knob type electrical equipment.
(4) Friction pendulum system shock-dampening method: by changing equipment supporting condition, the natural vibration period of extension device, avoid ground
The dynamic response to reduce equipment for the predominant period section of vibrations.Friction-pendulum shock-insulation support combines the general of sliding bearing and pendular motion
Read, mainly determined by the geometric parameter put using the frequency of system after earthquake isolating equipment, simultaneously by the Friction dissipation of sliding surface
Energy.Friction-pendulum shock-insulation device is in the existing substantial amounts of application of building field, but goes back in the damping application of porcelain knob type electrical equipment
There are some problems, one be increased top equipment displacement, two be this shock isolating pedestal not tension.
(5) totally enclosed type combined electrical apparatus power distribution equipment (gis) shock-dampening method: different from ordinary distribution device, gis is by open circuit
Device, disconnecting switch, quick or at a slow speed the element such as earthed switch, current transformer, spark gap, bus pass through closed composition, plus
It is contained in a storehouse for sf6 gas being full of certain pressure, electric insulation can rely on sf6 gas in storehouse to ensure, sf6 gas is simultaneously
Also play the effect of arc-extinguishing medium.The superiority of this method is a lot, and floor space is little, and equipment arrangement center of gravity is low, at home and abroad also should
More and more.But gis up-front investment is big, it is 30-40 times of distributing element investment;And gis combined electrical apparatus is once occur
Fault, consequence is more serious than open type transformer station much, and the fault of an element is probably that complete equipment lost efficacy or damaged.And
The repair time of gis is also longer than conventional equipment many.
Content of the invention
The invention aims to solving prior art to mitigate earthquake under earthquake motion effect for the porcelain knob type electrical equipment
When dynamic respond is big, install and safeguard inconvenience, the response of control device earthquake displacement and convenient install on the premise of reduce towering porcelain
The problem of column type electrical equipment earthquake effect difference.
The technical scheme is that three-dimensional multiple ring type tuned mass damper damping device, including two hemizonids,
Two hemizonids are butted into a torus, each hemizonid include 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 face closure one sides, institute
State sliding support to be concentrically mounted in the cavity of fixed support device, quality device is enclosed in the uncovered of sliding support
Face, stiffness means are located in the closed cavity that sliding support is constituted with quality device and sliding support lower end and fixation
In gap between support meanss inwall.
Described fixed support device includes upper limit plate, lower limiting board, fixing ring flat-plate and some gusseted parts, described on
Limiting plate and lower limiting board pass through fixing ring flat-plate and set up connection, and gusseted part annular array is installed on the lower end of lower limiting board.
If the edge of described lower limiting board is provided with the first Bolt plate and bolt stem, the fixed support device of two hemizonids
Set up to connect by the bolt on the first Bolt plate and form torus fixed support device.
Described sliding support includes 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 pass through slip ring flat-plate and set up connection, described slip ring flat-plate
It is attached at fixing ring flat-plate outer wall, sliding support occurs perpendicular in the presence of vertical seismic motion and fixed support device between
To relative motion, by the Friction dissipation energy between fixing ring flat-plate and slip ring flat-plate.
If the edge of described upper slip limiting plate is provided with the second Bolt plate and bolt stem, the sliding support of two hemizonids
The bolt that device passes through on the second Bolt plate is set up and is connected.
Described quality device is some half-ring masses, and one end of described half-ring mass is provided with Tenon, the other end
It is provided with tenon, the half-ring mass of two hemizonids is set up to connect by dovetail manner and formed quality loop, described quality collar
It is combined between slip limiting plate and middle slip limiting plate and middle slip limiting plate and lower slider limiting plate between.Multiple ring type is adjusted
During humorous mass damper work, between quality loop and limiting plate, there is relative slip, Friction dissipation energy.Obtained according to Theoretical Calculation
To design friction co-efficient value determine material and the surface roughness of frictional contact surface.
Described stiffness means include rubber ring and two ring-springs, and it is spacing that described ring-spring is respectively provided at slip
In the cavity that plate, middle slip limiting plate, slip ring flat-plate and quality loop are enclosed, described rubber ring is arranged on lower limiting board and downslide
Between dynamic limiting plate, each quality loop is one group of tuned mass damper with corresponding ring-spring, controls the different vibration shapes respectively,
Described quality loop passes through to extrude ring-spring to the support meanss applying power in opposite direction with equipment level acceleration of vibration, slides
Support meanss extrude rubber ring and apply the power in opposite direction with equipment vertical motion acceleration to support meanss, and reaching effect suppression should
The purpose of the vibration of frequency component, the major frequency components of earthquake motion, between 1-10hz, have certain bandwidth, with this
Meanwhile, the vibration of equipment is the result of multistage modes coupling, and therefore invention employs multiple tmd, each quality loop and corresponding
Spring is equivalent to a certain frequency band range of an independent tmd control device, and multiple tmd collective effect is to realize to more broadband
The control of scope, multiple tmd with the sensitivity reducing the frequency spectrum difference to earthquake motion for the damping effect, increased damping
Stability.
The multiple ring type tuned mass damper damping device of described three-dimensional includes energy-dissipating device, and energy-dissipating device includes some rings
Shape rub backing plate, annular backing plate is separately mounted between half-ring mass and upper slip limiting plate, half-ring mass with
Between slip limiting plate and half-ring mass and lower slider limiting plate between, during multiple ring type tuned mass damper work,
Two quality loops are due to inertia and support meanss occurred level relative motion, and then drive semicircular ring friction backing plate to limit with lower slider
Relative motion between position plate, middle slip limiting plate, upper slip limiting plate, by Friction dissipation energy.
The multiple ring type tuned mass damper damping device of described three-dimensional includes dust device, and dust device is to hide dust hood,
Reduce the device adverse effect to device damping such as rain, snow, dust in use.
The present invention compared with prior art has the effect that the three-dimensional of the present invention represents it and can realize equipment x, y and z
The damping of direction dynamic response, this device of multiple representation have at least include two for tuning mass body, ring type refer to dress
The shape facility put and installation form.Essence remains the operation principle of tuned mass damper.Assembly of the invention damping
Amplitude is big, and damping effect is stable, little to space requirement, is substantially not present problem of aging.Finite element modelling result shows: using this
After method, average peak displacement damping is than for 50%, and average peak acceleration damping is than 40% about;Triple tuning quality resistances
The damping stability of Buddhist nun's device is also very outstanding, for the artificial ground shaking chosen according to all kinds Site Design response spectrum and
Natively shake and all have stable damping effect.Compare with bracing wire reinforcement means, little to space requirement, new weakness will not be formed
Position;Compare with metal damping shock absorption method, the stability occurring for dissimilar earthquake motion table is more preferable;In addition, it is different
To reduce the peak accelerator of equipment, insulator root and method in the absolute displacement that base isolation sacrifices shock isolating pedestal top equipment
The peak stress of blue joint, this method can realize the reduction to peak accelerator and peak displacement it is achieved that reducing simultaneously
The target of towering porcelain knob type electrical equipment earthquake, and the towering porcelain knob type electrical equipment type being suitable for is also more extensive.
Brief description
Fig. 1 is apparatus of the present invention halfbody structural representation;
Fig. 2 is the zoomed-in view of a part in Fig. 1;
Fig. 3 is the schematic diagram that assembly of the invention band hides dust hood;
Fig. 4 is assembly of the invention without the structural front view 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 another visual angle of Fig. 8 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 b part in Figure 10;
Figure 12 is that half-ring mass is connected with each other schematic diagram;
Figure 13 is ring-spring structural representation;
Figure 14 is friction shim structural representation;
Figure 15 is to hide dust hood structural representation;
Figure 16 apparatus of the present invention and the scheme of installation of porcelain knob electrical equipment.
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, slip limiting plate in 9-, the upper slip limiting plate of 10-, 11- second Bolt plate, 12-
Half-ring mass, 13- tenon, 14- Tenon, 15- ring-spring, 16- rubber ring, 17- friction backing plate, 18- hides dust hood.
Specific embodiment
The specific embodiment of the present invention, the three-dimensional multiple ring type tuning quality damping of present embodiment are described with reference to the drawings
Device damping device, including two hemizonids, two hemizonids are butted into a torus, and each hemizonid includes fixing support and fills
Put, sliding support, quality device, stiffness means, energy-dissipating device and dust device, a described fixed support device and slide
Support arrangement is the uncovered ring type cavity structure of the akin three face closure one sides of internal diameter, and described sliding support is concentrically mounted on
In the cavity of fixed support device, quality device is enclosed in the open face of sliding support, and stiffness means are located at sliding support
Gap and sliding support lower end and fixed support device inwall between in the closed cavity of device and quality device composition
In.
Described fixed support device includes upper limit plate 6, lower limiting board 4, fixing ring flat-plate 5 and some gusseted parts 1, institute
State upper limit plate 6 and lower limiting board 4 passes through fixing ring flat-plate 5 and sets up connection, gusseted part 1 annular array is installed on lower limiting board
4 lower end.
If the edge of described lower limiting board 4 is provided with the first Bolt plate 2 and bolt stem 3, the fixing support of two hemizonids
The bolt 3 that device passes through on the first Bolt plate 2 is set up and is connected.
Described sliding support includes slip limiting plate 10, lower slider limiting plate 7, middle slip limiting plate 9 and slides
Ring flat-plate 8, described upper slip limiting plate 10, middle slip limiting plate 9 and lower slider limiting plate 7 pass through slip ring flat-plate 8 and set up connection, institute
State slip ring flat-plate 8 to be attached at fixing ring flat-plate 5 outer wall.
If the edge of described upper slip limiting plate 10 is provided with the second Bolt plate 11 and bolt stem 3, the cunning of two hemizonids
The bolt 3 that dynamic support meanss are passed through on the second Bolt plate 11 is set up to connect and is formed sliding support ring body.
Described quality device includes two semicircular half-ring masses 12, and one end of described half-ring mass 12 sets
There is Tenon 14, the other end is provided with tenon 13, the half-ring mass 12 of two hemizonids is set up to connect by dovetail manner and formed
Quality loop, described quality loop is enclosed between slip limiting plate 10 and middle slip limiting plate 9 and middle slip limiting plate 9 and downslide
Between dynamic limiting plate 7.
Described stiffness means include rubber ring 16 and two ring-springs 15, and described ring-spring 15 is respectively provided at slip
In the cavity that limiting plate 10, middle slip limiting plate 9, slip ring flat-plate 8 and quality loop are enclosed, described rubber ring 16 is arranged on lower limit
Between position plate 4 and lower slider limiting plate 7.
Energy-dissipating device includes some annular friction backing plates 17, and described annular friction backing plate 17 is separately mounted to half-ring quality
Between block 12 and upper slip limiting plate 10, between half-ring mass 12 and middle slip limiting plate 9 and half-ring mass 12 with
Between lower slider limiting plate 7.
Dust device is to hide 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 porcelain knob type electrical equipment and porcelain
The metal end that sleeve pipe top is connected, in order to reduce acceleration peak value, the displacement peak of the lower porcelain knob type electrical equipment of earthquake motion effect
Value.
Described fixing ring flat-plate 5 adheres to metal end outer wall, and ring-spring 15 is installed on inside quality loop, slip ring flat-plate 8
Outside, ring-spring 15 is contacted naturally with quality loop and slip ring flat-plate 8, does not set attachment means.
This device can realize the control to many first order modes, and each quality loop is one group of tuning with corresponding ring-spring 15
Mass damper, controls the different vibration shapes respectively;Meanwhile, sliding support, ring-spring 15, quality loop are whole as one
Reason mass and rubber ring form the tmd of a control vertical motion, realize the control to vertical principal mode.During non-earthquake state
Half-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, the action of gravity of quality loop three are in compressive state.When earthquake occurs, quality loop drives friction backing plate spacing
Relative motion between plate, sliding support generation and fixed support device between in the presence of vertical seismic motion simultaneously is vertical
Relative motion, by Friction dissipation energy.Quality loop applies to shake with equipment level to support meanss by extruding ring-spring 15
Dynamic acceleration power in opposite direction, vertical mass body applies to add with equipment vertical motion to support meanss by extruding rubber ring 16
The contrary power of velocity attitude, reduces the dynamic response of towering porcelain knob type equipment, reaches the towering porcelain knob type electrical equipment earthquake of mitigation
Purpose.Determine the seismic fortification intensity of equipment operating area, the matter of bond quality ring according to " building aseismicity specification " gb50011
Amount and two parameters of the corresponding frequency values of the controlled vibration shape can determine the external diameter of lower limiting board 4, in conjunction with sliding support,
Ring-spring 15, the quality of mass body of quality loop composition and two parameters of the corresponding frequency values of the controlled vibration shape can determine
Stroke required for sliding support.
According to the construction featuress of towering porcelain knob type electrical equipment, subtract with three-dimensional multiple ring type tuned mass damper herein
Shake device reduces the earthquake of towering porcelain knob type electrical equipment.The damping of towering porcelain knob type electrical equipment does not adopt both at home and abroad at present
Cross multiple tuned mass dampers;Meanwhile, also have no that multiple tuned mass dampers are used for towering porcelain by anyone or tissue
The damping of column type electrical equipment.Multiple for three-dimensional ring type tuned mass damper damping device is applied to porcelain knob type electrical equipment subtract
Shake belongs to pioneering.
Embodiment described above is only that the preferred embodiment of the present invention is described, the not model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, the technical side to the present invention for the those of ordinary skill in the art
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (9)
1. three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: include two hemizonids, two hemizonids
It is butted into a torus, each hemizonid includes 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 face closure one sides, described sliding support
Device is concentrically mounted in the cavity of fixed support device, and quality device is enclosed in the open face of sliding support, and rigidity fills
It is set in the closed cavity that sliding support is constituted with quality device and sliding support lower end and fixed support device
In gap between inwall.
2. according to claim 1 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described fixation
Support meanss include 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) pass through fixing ring flat-plate (5) and set up connection, and gusseted part (1) annular array is installed on lower limiting board
(4) lower end.
3. according to claim 2 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described lower limit
The edge of position plate (4) be provided with the first Bolt plate (2) and if bolt stem (3), the fixed support device of two hemizonids is by the
Bolt (3) on one Bolt plate (2) is set up and is connected.
4. according to claim 3 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described slip
Support meanss include slip limiting plate (10), lower slider limiting plate (7), middle slip limiting plate (9) and slip ring flat-plate (8), institute
State slip limiting plate (10), middle slip limiting plate (9) and lower slider limiting plate (7) and pass through slip ring flat-plate (8) foundation connection, institute
State slip ring flat-plate (8) to be attached at fixing ring flat-plate (5) outer wall.
5. according to claim 4 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described upper cunning
The edge of dynamic limiting plate (10) be provided with the second Bolt plate (11) and if bolt stem (3), the sliding support of two hemizonids
Set up by the bolt (3) on the second Bolt plate (11) and connect.
6. according to claim 5 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described quality
Device is half-ring mass (12), and one end of described half-ring mass (12) is provided with Tenon (14), and the other end is provided with tenon
(13), the half-ring mass (12) of two hemizonids is set up to connect by dovetail manner and is formed quality loop, described quality collar
Be combined between slip limiting plate (10) and middle slip limiting plate (9) and middle slip limiting plate (9) and lower slider limiting plate (7) it
Between.
7. according to claim 6 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described rigidity
Device includes rubber ring (16) and two ring-springs (15), and described rubber ring (16) is arranged on lower limiting board (4) and lower slider
Between limiting plate (7), described ring-spring (15) is respectively provided at slip limiting plate (10), middle slip limiting plate (9), slip ring
In the cavity that plate (8) and quality loop are enclosed.
8. according to claim 7 three-dimensional multiple ring type tuned mass damper damping device it is characterised in that: described three-dimensional
Multiple ring type tuned mass damper damping device includes energy-dissipating device, and energy-dissipating device includes some annular friction backing plates (17),
Described annular friction backing plate (17) is separately mounted between half-ring mass (12) and upper slip limiting plate (10), half-ring matter
Between gauge block (12) and middle slip limiting plate (9) and half-ring mass (12) and lower slider limiting plate (7) between.
9. the multiple ring type of three-dimensional according to any of the above claim tuned mass damper damping device it is characterised in that:
The multiple ring type tuned mass damper damping device of described three-dimensional includes dust device, and dust device is to hide dust hood (18).
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