CN102797372B - A kind of method guaranteeing nuclear power plant's safe operation when being caused tsunami by special violent earthquake - Google Patents
A kind of method guaranteeing nuclear power plant's safe operation when being caused tsunami by special violent earthquake Download PDFInfo
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- CN102797372B CN102797372B CN201210303072.4A CN201210303072A CN102797372B CN 102797372 B CN102797372 B CN 102797372B CN 201210303072 A CN201210303072 A CN 201210303072A CN 102797372 B CN102797372 B CN 102797372B
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Abstract
This patent is that nuclear power plant provides two kinds of seismic isolation apparatus, they respectively using semielliptic spring buttress and double-deck cylindrical helical compression spring as earthquake isolating equipment main body, dissolved the elastic deformation of vertical direction; Special universal caster wheel is installed below main body, can have moved by Zi You Roll in foundation surface plate platform, the straight line of the horizontal distortion of any direction of seismic spread, amplitude and speed or curvilinear motion have been converted into original place rotary motion, to dissolve horizontal distortion.Earthquake isolating equipment there is also mounted special elastic pier damper.By the integrated application of these three devices, ensure the safety of nuclear power plant in crushing special violent earthquake.For preventing tsunami and other secondary disaster from damaging nuclear power plant, patent provides by thickening type plastic aluminium-sandwiched clad plate, splices with Tenon glue spreading method, reinforce the hemispherical made with snap close without Beam post factory building, by all TRT value what factory buildings.At plastic aluminium-sandwiched clad plate inboard compound one deck lead foil, for nuclear power plant sets up the 5th anti-nuclear radiation barrier in road.
Description
Technical field
The invention belongs to nuclear energy security fields, is a kind of method guaranteeing nuclear power plant's safe operation when being caused tsunami by special violent earthquake.The safety of nuclear power station is extremely important, and it directly affects the development of national economy and the stable of the popular feeling.The present invention relates to the design and manufacture of seismic isolation apparatus (two schemes), the design and manufacture of tsunami protector and patent working scheme.
Background technology
Fukushima, Japan nuclear power station is seriously damaged in 9 grades of special violent earthquakes, and suffers that tsunami attacks, and causes serious nuclear leakage, lead to tremendous economic loss and popular feeling fear, for the moment, each big country of the world queries to nuclear power one after another, and China has also suspended the construction process of nuclear power station.Nuclear power is a kind of clean, efficient, safe green energy resource, this is affirmative, earthquake, tsunami become serious consequence so damage wine to nuclear power station, because protection is improper, measure is unfavorable, be external cause, not nuclear power self existing problems, in today that the energy is increasingly deficient, energetically, it is unique selection.
Summary of the invention
Nuclear energy power generation facility and supporting facility (hereinafter referred to as nuclear power plant) thereof are the priority of protections of nuclear power station, the seismic isolation apparatus (hereinafter referred to as spacer assembly) that the present invention is arranged and tsunami protector based on preventing more than 8 grades, the special violent earthquake that epicentral intensity is more than 11 degree and tsunami and other secondary disaster.
1. spacer assembly theory is set:
The failure stress of earthquake results from the earth's core, reaches in ground, between ground and the building building on ground, produce shearing force, and therefore, the degree destroyed in earthquake of building depends on the size of shearing force.Between ground and building, install a series of device, make shearing force and other failure stress be consumed in wherein, building then exempts from destruction, Here it is our safety protecting method of pursuing.
Earthquake wave propagation, also vertically there is elastic deformation in occurred level distortion in the horizontal direction mostly, because sudden change appears in the vibration period of seismic wave at any time, amplitude is suddenly big or suddenly small, and acceleration also has very unexpected sudden, the mankind are felt simply helpless, hard to guard against.Useful " laminated rubber bases " was arranged on precedent between ground and building as spacer assembly in recent years, to reduction shearing force, it is effective for alleviating building damage, but, its elastic deformation function is relative with elasticity restore funcitons poor, still be not enough to defend the more earthquake of large level and the destruction of secondary disaster, and the earthquake that earthquake magnitude is not too large just may cause interlayer to chap to it.We cannot know that the earthquake that will occur future is much ranks, therefore, the earthquake resistant level of building is positioned 8 grades may not be carefree, particularly to nuclear power station and other mechanism relevant to nucleus product, the safety in crushing special violent earthquake must be ensured, this just requires that spacer assembly not only must possess very strong load-carrying ability, also must tackle contingent amplitude peak, the most complicated horizontal distortion and elastic deformation at any time, and leave abundant leeway.
2. the method to set up of spacer assembly:
(1) plan of establishment:
Scheme one: steel plate spring type spacer assembly.The main body of this device is made up of " spring buttress " (8) tens semielliptic spring steel plates, this spring buttress designs with reference to heavy type mining dump truck steel spring plate, it had both had powerful load-carrying ability, had again very excellent elastic deformation function and elasticity restore funcitons.The back of a bow of spring buttress is fixed on " load support " (7) by " spring buttress fastener " (9), together with this support is cast in steel concrete " bearing tray " (3) of bearing load, when earthquake occurs, dissolve elastic deformation by means of elastic deformation function and elasticity restore funcitons.Two " bow pin " (12) of spring buttress respectively fill one " carrying coaster " (11), and bow pin is steadily placed on " coaster main body " (14), and are fixed by " bow pin fastener " (13).Carrying coaster main body the latter half is 4 " brave legs ", and its brave pin steps down on circle or ellipse " cast iron base plate " (15), is fixed by fastening bolt.Cast iron floor peripheral, tens are worn nosing " universal caster wheel central axis through hole " (17), each through hole installs 1 special " universal caster wheel " (16), Free-rolling can be gone up in " plate platform " (5) of foundation surface, when earthquake occurs, by universal caster wheel, " straight line " of horizontal distortion or curvilinear motion are changed into original place " rotation " motion, the horizontal distortion of any direction of being conducted by ground, any length, any speed is dissolved.
Scheme two: compressed spring type spacer assembly.The main body of this device is " double-deck cylindrical helical compression spring " (19), and Compress Spring specification should be greater than the specification of train railway carriage shock-absorbing spring.What be used for installation Compress Spring is that diameter is not less than 2000mm, thickness is not less than 30mm " open circles cast iron disk " (18), on this cast iron disk, uniform two rows are no less than 50 " spring seat " (20) closely, Compress Spring is placed in spring seat, is fixed by briquetting.Inside cast iron disk, be no less than with periphery is uniform the universal caster wheel central axis through hole 50 being worn nosing, be used for universal caster wheel is installed, when earthquake occurs, Free-rolling in plate platform.Above Compress Spring, be " inverted cast iron disk " (22), this disk need be guaranteed solid and reliable together with being cast in the steel concrete bearing tray of carrying nuclear power plant.In cast iron disk middle part, it is compound pier damper (10) present position, in order to increase the height of compound pier damper, the load support (21) installing compound pier damper is cast in the intermediate recess place of bearing tray and spacer assembly corresponding position.
Above two schemes relatively respectively has length, and the former support degree is strong, good stability, but set direction and impact toughness are not as good as the latter.The latter, because Compress Spring self just possesses the selection function in any direction, can assist universal caster wheel travel direction to select, avoid the moment dead angle occurred during the universal caster wheel choice direction of earthquake initial period.
(2) the concrete using method of universal caster wheel: in the present invention, universal caster wheel is very important ingredient, it not only will carry all wt of nuclear power plant, spacer assembly, tsunami protector, when an earthquake occurs, also want directly in the face of elastic deformation that is powerful, that undergo mutation at any time and horizontal distortion, so, must strong with supporting capacity, solid and reliable, set direction function and running roller rolling function must be principle flexibly in design.Of the present invention is inverted pendulum gyro ceremony universal caster wheel, and this universal caster wheel supporting capacity is strong, and can do unlimited rotation along " central axis " (23).Because two " planet roll wheel " (29) are urged in plate platform by gravity, when straight-line rolling, the frictional force between planet roll wheel and plate platform is in balance, at the initial period that earthquake occurs, because direction suddenlys change, cause frictional force unbalance, now, under the driving of ground mental and physical efforts, planet roll wheel then centrally axle turn to frictional force balance till, and roll in the horizontal direction, in face of mental and physical efforts formidably, this rotation and rolling are easy to do.In design, the steering locking angle degree of planet roll wheel is 90 °, once there is the change of this vertical angle, central axis axle center and two " planetary rollers wheel shaft " (30) axle center will be produced to overlap with vertical line phenomenon, cause the of short duration dragging perpendicular to planet roll wheel transverse horizontal line, add the failure stress to planet roll wheel, for this reason, in design two planetary rollers wheel shafts are not less than 5 ° respectively to left and right dislocation, meet on same vertical line to avoid the axle center of three axles.
In order to improve the height of central axis, guarantee that universal caster wheel central axis has the ability of the flat deformation failure stress of more formidable enemy's water resistant, " nosing " (25) of corresponding height are devised in the central axis through hole of cast iron base plate, for reduce multi-axis foot polling to time resistance, on center shaft between half part and nosing, install " central axis copper sheathing " (26), and keep lubricating status for a long time; " pressure bearing " (32) and " thrust ball bearing with flat seat " (31) of dimension are installed respectively in upper and lower two positions of " central axis crossette " (33); For improving anti-the jolt ability of universal caster wheel in horizontal distortion, between thrust ball bearing with flat seat and " universal caster wheel main body " (28), lay two " spring washer " (27), with order about universal caster wheel centrally axle move axially by a small margin; Have " spacing jump ring " (24) on central axis top, within the elasticity distance being used for the amplitude that moves axially of central axis to be limited in spring washer.
Universal caster wheel has super-huge, large-scale, medium-sized, small-sized four models, and consider from load-carrying ability and flexibility, patent have selected medium-sized, by increase and decrease universal caster wheel quantity, the load of universal caster wheel is controlled within 350 ~ 450kg.
(3) plate platform of foundation surface is fixed on, be not only the levelling bench that universal caster wheel provides smart scroll, the ground of the certain amplitude also occurred after imperial anti-macroseism ftractures or dislocation is sunk by a small margin, and the destruction of spraying water, emitting husky secondary disaster to cause nuclear power plant.
(4) manufacture method of compound pier damper and using method: installed that diameter is 500 ~ 800mm, that " matrix " is resin and plastic cylindrical " compound pier damper " (10) below the spring buttress back of a bow, its " reinforcement " adopts line style " three-dimension integrally programming structure ", forming technology adopts " RTM forming technique ", and its complex method is " decentralized ".Compound pier damper shape matching is simple, but, in earthquake, may immense pressure be subjected at any time, so, must globality be emphasized to the establishment technique of reinforcement, to avoid bursting apart.The height of compound pier damper is determined depending on compression limit height when back of a bow height, carrying coaster height and static state, its upper end is arranged on spring buttress fastener (9) or is directly installed on bearing tray, and lower end then vertically urges in plate platform.The feature of this compound pier damper is: by means of the viscoelasticity of its internal construction, plays energy-dissipating and shock-absorbing effect; Its lower end is globular model, and there is little hemispherical " depression " in centre, maintains static during pressure-bearing because this place produces pull of vacuum, play fixing and positioning action, when there is especially big amplitude elastic deformation, pull of vacuum can be overcome easily compound pier damper is mentioned, to avoid damaging; When there is especially big horizontal distortion, can, easily by dragging displacement, also avoid damaging.
(5) spacer assembly is occurring without earthquake, when being in the inactive state of counterweight balance, its position residing for " load load center of gravity ", spring buttress or Compress Spring and compound pier damper maximum flexibility distortion 1/2 place, if there is deviation in this position, then by quantity, width, the thickness of increase and decrease spring buttress steel plate, and the quantity of increase and decrease Compress Spring adjusts.
(6) in general arrangement, every 2 pairs or 3 pairs of springs buttress and 2 or 3 compound pier dampers are one group, and its area occupied is not less than 4m
2, leave between each group and be not less than the wide passage of 800mm.During operational version 2, then each open circles cast iron disk is one group, and other is identical with scheme 1.
(7) nuclear power factory building is more than 1000mm from the distance of periphery " retaining wall " (6), retaining wall is installed several " elasticity thrust terminator " (4), its minimal elastic stroke is 1000mm, and this thrust terminator only has thrust, does not produce pulling force.Thrust terminator effect is as follows:
1., when occurring without earthquake, jointly what centre position is located by nuclear power plant with the compound pier damper in spacer assembly;
2. when earthquake occurs, check and balance is produced to horizontal distortion;
3. when tsunami or strong storm occur, by the spring function of thrust terminator, for nuclear power plant provides a stifled soft stop protection wall, and nuclear power plant is driven to set back.
3. the setting of tsunami protector and manufacture method:
Nuclear power station mostly build coastal waters in, to meet the demand of a large amount of cold true water.We ensure the safety of nuclear power plant in special violent earthquake by spacer assembly, but the destruction that the tsunami because special violent earthquake causes, strong storm surge and floods, disaster caused by a windstorm cause nuclear power plant can not be avoided, therefore, tsunami defence engineering is the important step guaranteeing that npp safety runs equally.
Tsunami protector be in fact exactly by a hemispherical without beam column factory building, nuclear power facility is covered in factory building." nuclear power factory building " (1) is very good by toughness, body is light, firm without fragility, do not chap, moulding of can colding pressing do not rebound " thickening type plastic aluminium-sandwiched clad plate " manufacture form, it has special method of attachment, can manufacture any radius without beam column factory building.Because nuclear power factory building inherently has very excellent resistance to shock, so it can be fixed on bearing tray, also can be fixed on the retaining wall of periphery.
The matrix of plastic aluminium-sandwiched clad plate adopts PE or other resin and plastic as base-material, first base-material is heated to molten state extruded by extruder, compound is carried out with the reinforcement of dipped glue, repetition like this n time, after repeatedly exerting pressure, water-cooled is shaped, because its reinforcement adopts punching aluminium strip, therefore make matrix wrap up in what body by hole by reinforcement, produce the effect of mutual containing, so this complex method is " decentralized complex method ", this is the composite board that a kind of composite performance is excellent, do not chap.The design thickness of this plate is 100 ~ 150mm, reinforcement 8 ~ 12 layers, and reinforcement thickness is 0.8 ~ 1mm.Although plastic aluminium-sandwiched clad plate itself has multinomial hidden function; some ray can be suppressed; but; in order to the nuclear radiation that more effectively imperial anti-maintenance, refuelling rod, process nuke rubbish and other work generation nuclear leakage cause; again in the inboard of this composite plate; compound 1 layer thickness is " lead foil " of 0.2 ~ 1mm, for nuclear power plant sets up the 5th layer of nuclear safety containment vessel.
Plastic aluminium-sandwiched clad plate is cut into hexagon or quadrangle " tile " that relative two back gauges are 2000mm, as shown in figure 12, arc or plate shaped tile is cold-pressed into according to the radian of nuclear power plant designing, according to " radius " (36) of nuclear power factory building and the distance on relative both sides, " tile " (34), draw the cutting angle on each limit of tile, see (35), after cutting by this angle, with perpendicular to cutting face for benchmark, " notch tenon " processing is carried out to each limit of tile, as shown in Figure 9, after gluing splicing, " snap close " (37) are aided with.For the connection between strengthening snap close and tile, two end faces that snap close is relative are cut into " chamfering " (38) of certain amplitude, and are reinforced by " tension reinforcement plate " (39).
The method for embedding of nuclear power factory building tile, as shown in figure 12, needs adhesive for spraying to each connecting portion, and every bar interface is installed and is no less than 2 snap closes.
Accompanying drawing explanation
Fig. 1: nuclear power plant's general profile schematic diagram, (1) nuclear power factory building; (2) software water-proof curtain; (3) bearing tray; (4) elasticity thrust terminator; (5) plate platform; (6) retaining wall and ground.
Fig. 2: spring steel board-like spacer assembly assembly schematic diagram, (7) load support; (8) spring buttress; (9) spring buttress fastener; (10) compound pier damper; (11) coaster is carried; (3) bearing tray; (5) plate platform.
Fig. 3: carrying coaster assembly schematic diagram, (12) spring buttress bow pin; (13) fastener; (14) coaster main body; (15) cast iron base plate; (16) universal caster wheel; (17) universal caster wheel central axis through hole; (5) plate platform.
Fig. 4: double-layer circular cylindrical coil compressed spring type spacer assembly assembly schematic diagram, (18) open circles cast iron disk; (19) double-deck cylindrical helical compression spring; (20) spring is sat; (21) damper load support; (22) open circles cast iron disk is inverted; (3) bearing tray; (5) plate platform; (10) compound pier damper; (16) universal caster wheel.
Fig. 5: open circles cast iron disc assembly schematic diagram, (17) universal caster wheel central axis through hole; (18) open circles cast iron disk; (20) spring is sat.
Fig. 6: universal caster wheel assembly partial cutaway schematic, (23) central axis; (24) the spacing jump ring of central axis; (25) central axis through hole nosing; (26) central axis copper sheathing; (27) spring washer; (28) universal caster wheel main body; (29) planet roll wheel; (30) planetary rollers wheel shaft; (31) thrust ball bearing with flat seat; (32) pressure bearing; (33) central axis crossette; (15) cast iron base plate.
Fig. 7: universal caster wheel partial cutaway schematic, (28) universal caster wheel main body; (29) planet roll wheel; (30) planetary rollers wheel shaft.
Fig. 8: nuclear power factory building tile and processing method generalized section thereof, (34) tile; (35) line of cut; (36) nuclear power factory building radius.
Fig. 9: notch tenon processing generalized section.
Figure 10: snap close schematic top view, (37) snap close; (34) tile.
Figure 11: snap close master looks generalized section, (38) chamfering snap close; (39) reinforcement plate is strained; (34) tile.
Figure 12: nuclear power factory building tile method for embedding schematic diagram.
Embodiment
1. the dividing potential drop method of load:
Algorithm steps:
(1) according to design scale, assessment " nuclear power plant's weight ";
(2) with reference to the plane figure of nuclear power facility, design " bearing tray area ";
(3) according to nuclear power plant's weight and layout, setting " section configuration of bearing tray and thickness ";
(4) area is multiplied by thickness and draws " bearing tray volume ";
(5) steel concrete proportion 2.4 tons/m
3be multiplied by bearing tray volume to draw " bearing tray weight ";
(6) bearing tray weight adds nuclear power plant's weight and draws " spacer assembly total load ";
(7) bearing tray area is drawn divided by the area often organized shared by spacer assembly " spacer assembly group number ";
(8) spacer assembly total load is drawn divided by spacer assembly group number " often organizing spacer assembly load ";
(9) calculation " load of every universal caster wheel " is asked.
2. determine the method for load load position of centre of gravity:
(1) spring buttress by 12, wide 180mm, thick 15mm, hunchbacked high 250mm, bow pin long 250mm, bent body overall length 2000mm steel spring plate form;
(2) two spring buttress are placed on dedicated platform, be fixed on by fastener on the load support specializing in assembling and test, and load is carried out by embodiment 1-(8) on this support, according to summary of the invention 2-(5), by load load centre of gravity adjustment to optimum position;
(3) coaster main body (14) is made according to bow pin length and steel plate width;
(4) cast iron base plate (15) is made with 500mm diameter, 30mm thickness; On base plate, by often organizing spacer assembly load by divided by 400kg institute value, determine universal caster wheel central axis number of openings, in order to installing universal caster wheel.
(5) below spring buttress fastener, a compound pier damper is installed;
(6) build or engage the university or scientific research institution's assistance that have shock test platform, carrying out vibration test, measure various data, find out shortcomings spacer assembly, row test again after improvement, until optimum state.
3. the system of selection at the load load center of pair compressed spring type spacer assembly is substantially identical with aforementioned.
4., according to the layout of nuclear power facility, to the spacer assembly with some " body weight facility " (such as containment) corresponding position, must strengthen its supporting capacity, concrete measure is determined in the design.
5. the construction method of ground and bearing tray:
(1) thickness of ground (6) routinely, to the welding of plate platform, first weld bond water cutter can be cut into " V " shape, and the also appropriateness that polishes flat after welding is established with pitted skin, and plate platform must fixedly secure on ground, and strictly keeps level.
(2) need above bearing tray to set thickness according to nuclear power facility layout and the load of each position, position corresponding with passage is below arch, vault is 1900mm to plate platform distance, passes through for maintenance personal, and 4m (is estimated in the position beyond arch top
2), the convex height to installing spacer assembly downwards.During casting reinforced concrete bearing tray, must carry out accomplishing without any letup simultaneously.
Nuclear power factory building is fixed on the end face of bearing tray periphery, and around the outside bottom nuclear power factory building, installs circle soft glass water-proof curtain (2), be used for preventing seawater, flood, rainwater from pouring in spacer assembly.
The present invention be also applicable to core science and technology test, nucleus product make and preservation, nuclear waste disposal, uranium enrichment factory building, warehouse.
Claims (6)
1. guarantee the method for nuclear power plant's safe operation when being caused tsunami by special violent earthquake for one kind, it is characterized in that: this method for safe operation comprises the manufacture method of tsunami protector and the method to set up of seismic isolation apparatus, wherein, seismic isolation apparatus needs arrange universal caster wheel and compound pier damper, also need the dividing potential drop of seismic isolation apparatus being carried out to load; And seismic isolation apparatus also needs satisfied following requirement, 1. seismic isolation apparatus must possess substantial load ability, must possess superior elasticity distortion function and elasticity restore funcitons; 2. be arranged on the universal caster wheel on seismic isolation apparatus, neatly the straight line of any direction horizontal distortion or curvilinear motion must be converted into original place rotary motion; 3. on seismic isolation apparatus, configure compound pier damper, the Main Function of this damper is energy-dissipating and shock-absorbing, and is jointly fixed nuclear power plant with the elasticity thrust terminator be arranged on nuclear power factory building perimeter stops cob wall and locates; 4. the use of seismic isolation apparatus must carry out scientific and reasonable dividing potential drop with the nuclear power plant huge to own wt is front dike.
2. method for safe operation according to claim 1, it is characterized in that: the manufacture process of tsunami protector is as follows: with a huge factory building, nuclear power facility is placed within factory building, this factory building is with a kind of thickening type plastic aluminium-sandwiched clad plate, by special connection and reinforcement means, manufacture hemispherical without beam column factory building (1), its manufacture method is: plastic aluminium-sandwiched clad plate is cut into hexagon or quadrangle tile (34) that relative two back gauges are 2000mm, is cold-pressed into arc or plate shaped tile according to the radian of nuclear power plant designing; According to the distance on radius (36) both sides relative to tile of nuclear power factory building, draw the cutting angle (35) on each limit of tile, after cutting by this angle, with perpendicular to cutting face for benchmark, the processing of notch tenon is carried out to each limit of tile, after gluing splicing, be aided with snap close (37), for the connection between strengthening snap close and tile, two end faces that snap close is relative are cut into the chamfering (38) of certain amplitude, and are reinforced by tension reinforcement plate (39); Although plastic aluminium-sandwiched clad plate can suppress some ray; but; in order to the nuclear radiation that more effective defence refuelling rod, maintenance, process nuke rubbish and other work generation nuclear leakage cause; again in the inside of this composite plate; compound a layer thickness is " lead foil " of 0.2 ~ 1mm, for nuclear power plant sets up the 5th layer of nuclear safety containment vessel.
3. method for safe operation according to claim 1, it is characterized in that: arranging of seismic isolation apparatus is as follows: the present invention is provided with steel plate spring type seismic isolation apparatus, spring buttress (8) that this seismic isolation apparatus is made up of tens semielliptic spring steel plates carrys out carry load, the spring buttress back of a bow is piled up neatly fastener (9) by spring and is fixed on load support (7), together with this support is cast in the steel concrete bearing tray (3) of bearing load; Two bow pin of spring buttress, respectively fill a carrying coaster (11), bow pin is steadily placed in coaster main body (14), and is fixed by fastener (13); Coaster main body the latter half is four brave legs, and its brave pin steps down on the cast iron base plate (15) of circle or ellipse, is fixed by fastening bolt; Cast iron floor peripheral has the universal caster wheel central axis through hole (17) tens being worn nosing, is used for installing special universal caster wheel (16); Seismic isolation apparatus is when being in equilibrium state without earthquake, 1/2 place that its " load load center of gravity " present position is out of shape at spring buttress and compound pier damper maximum flexibility, if deviation appears in this position, piles up neatly the quantity of steel plate, width and thickness and adjusts by increasing and decreasing spring.
4. method for safe operation according to claim 1, it is characterized in that: the concrete using method of universal caster wheel is as follows: the inverted pendulum gyro ceremony universal caster wheel that the present invention is arranged is primarily of universal caster wheel main body (28), central axis (23) and two planet roll wheel (29) compositions, being provided with the nosing (25) of corresponding height in the central axis through hole of cast iron base plate, strengthening the ability of universal caster wheel opposing failure stress with the height by improving central axis; For reduce multi-axis foot polling to time resistance, central axis copper sheathing (26) is had between the first half and central axis through hole nosing of central axis, and keep lubricating status for a long time, in two positions up and down of central axis crossette (33), pressure bearing (32) and the thrust ball bearing with flat seat (31) of dimension is set respectively; For improving anti-the jolt ability of universal caster wheel in horizontal distortion, between thrust ball bearing with flat seat and universal caster wheel main body, lay two spring washers (27); The spacing jump ring of central axis (24) is had, within the elasticity distance being used for the amplitude that moves axially of central axis to be limited in spring washer on central axis top; For preventing planet roll wheel from occurring the of short duration dragging perpendicular to planet roll wheel transverse horizontal line, two planetary rollers wheel shafts (30) are not less than 5 ° respectively to left and right dislocation.
5. method for safe operation according to claim 1, it is characterized in that: the application process of compound pier damper is as follows: compound pier damper (10) its matrix is resin and plastic, reinforcement adopts line style three-dimension integrally programming structure, forming technology adopts RTM forming technique, complex method is decentralized, and the viscoelasticity by means of its internal construction plays energy-eliminating shock-absorbing effect; The diameter of compound pier damper is 500 ~ 800mm, and it is highly determined depending on the compression limit height when back of a bow, carrying coaster and static state; Its upper end is arranged on spring buttress fastener (9), lower end then vertically urges in the plate platform (5) of foundation surface, and rely on the pull of vacuum that the little hemispherical depression at its bottom center position produces, fix and locate, occur especially big amplitude elastic deformation or spy significantly horizontal distortion time, pull of vacuum can be overcome easily compound pier damper is mentioned or drags displacement, to avoid damaging.
6. method for safe operation according to claim 1, it is characterized in that: as follows to the dividing potential drop method of load: aim of the present invention must carry out dividing potential drop to nuclear power plant and the huge heavy of bearing tray self, seismic isolation apparatus can be used, one is arrange bearing tray, nuclear power facility is put on what bearing tray, two is according to bearing tray base area for relying on, to be not less than 4m
2it is one group, leave between each group and be not less than the wide passage of 800mm, be divided into some groups, three is that often group arranges 2 secondary or 3 auxiliary springs buttress and 2 or 3 compound pier dampers, four is that two bow pin that every auxiliary spring is piled up neatly install a carrying coaster, five be every portion carrying coaster cast iron base plate on tens universal caster wheels are installed, finally, according to nuclear power plant and bearing tray actual weight, by universal caster wheel quantity on increase and decrease group number, spring buttress and cast iron base plate, universal caster wheel load is controlled within 350 ~ 450kg.
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| GB2562741A (en) * | 2017-05-23 | 2018-11-28 | Rolls Royce Power Eng Plc | Protective superstructure for a nuclear power plant |
| CN113981995B (en) * | 2021-10-26 | 2022-06-10 | 应急管理部国家自然灾害防治研究院 | Novel high-energy-level active energy dissipation structure for earthquake landslide collapse disaster |
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| CN102345700A (en) * | 2011-09-15 | 2012-02-08 | 常州格林电力机械制造有限公司 | Nuclear-grade large equipment damper |
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| CN1264776A (en) * | 2000-03-10 | 2000-08-30 | 东南大学 | Vertical earthquake isolating equipment for engineering structure |
| CN2651560Y (en) * | 2003-10-16 | 2004-10-27 | 上海理工大学附属工厂 | Hydraulic damper for nuclear power station |
| JP2007255071A (en) * | 2006-03-23 | 2007-10-04 | Kumagai Gumi Co Ltd | Compound building |
| CN102287578A (en) * | 2011-07-29 | 2011-12-21 | 华东理工大学 | Spring-rubber vibration isolating hanging frame for damping vibration and reducing noise for warm ventilation pipe |
| CN102345700A (en) * | 2011-09-15 | 2012-02-08 | 常州格林电力机械制造有限公司 | Nuclear-grade large equipment damper |
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| CN109653366A (en) * | 2018-08-29 | 2019-04-19 | 孙经尧 | A kind of method of construction for building large aircraft workshop or hangar with thickening type plastic aluminium-sandwiched clad plate |
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| CN102797372A (en) | 2012-11-28 |
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