CN207197759U - A kind of spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus - Google Patents
A kind of spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus Download PDFInfo
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- CN207197759U CN207197759U CN201720292195.0U CN201720292195U CN207197759U CN 207197759 U CN207197759 U CN 207197759U CN 201720292195 U CN201720292195 U CN 201720292195U CN 207197759 U CN207197759 U CN 207197759U
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- screen work
- water tank
- storage rack
- measurement apparatus
- fuel storage
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Abstract
The utility model discloses a kind of spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus for belonging to technical field of nuclear power energy.Using single Skeleton Model and double Skeleton Models, the base of the device water tank is caught in the groove in the middle part of shake table the measurement apparatus, and is screwed connection；The identical or different single lattice frame of two structures is placed in water tank, a moveable dividing plate is placed between two single lattice framves；Form is installed in water tank side wall, pressure sensor is installed in water tank side wall；The utility model measures the displacement of screen work using laser displacement sensor；Fluid force between screen work and water tank is measured using pressure sensor, obtains measuring screen work leg coefficient of friction；The Coupling effect of seepage rock deformation between screen work and water tank, screen work and screen work is studied respectively；And the security of spent fuel storage rack is guaranteed in the case of seismic events.
Description
Technical field
The utility model belongs to technical field of nuclear power energy, more particularly to a kind of spent fuel storage rack fluid structurecoupling parameter
Shake table measurement apparatus.
Background technology
The spentnuclear fuel drawn off from nuclear power plant reactor has very strong radioactivity, it is necessary to be deposited in spentnuclear fuel water tank very long
Time, and with prolonged storage, the phenomenon largely stored can be formed in Spent Fuel Pool, therefore ensure spentnuclear fuel storage
It is very necessary to deposit the security of screen work and water tank under any circumstance.Spent fuel storage rack is antidetonation I kind equipments, is set
Count into free support form, be not fixedly connected with ground and pool wall, under seismic (seismal, it is necessary to ensure spentnuclear fuel water tank and
The structural integrity of screen work is stored, does not occur any topple, slide, deforming and damaged.To screen work carry out seismic (seismal under sliding,
During the research for phenomenon of toppling, the coefficient of friction between screen work bottom and ground is to influence the key that screen work topples and slid, and is used
Shaketalle test method, the coefficient of friction between screen work bottom supports and ground is obtained, then this parameter is attached to by coefficient of friction
In the program of finite element of screen work, and then plaid matching rack-like state is assessed.Due to spent fuel storage rack and water tank wall it
Between gap it is smaller, in the presence of seismic (seismal, screen work surrounding fluid can produce acceleration so as to produce additional tension stress, this
When fluid force can be bigger, it is therefore desirable to consider the effect of fluid force.
It is external more comprehensive to spent fuel storage rack fluid structurecoupling characteristic research, it is proposed that three-dimensional spentnuclear fuel screen work dynamic
Fluid structure interaction model.And the correctness of more screen work fluid coupling models is verified by experiment and CFD software simulation, but
It is the selection also uncertainty of its parameter.And domestic correlative study is deficienter, mainly with finite element modelling, it flows solid
Coupling effect employs hydrodynamic mass to consider, is protected compared with the dynamics parameter such as obtained additional mass and additional damping
Keep, and lack experimental data.
Utility model content
The purpose of this utility model is to propose a kind of spent fuel storage rack fluid structurecoupling ginseng in view of the shortcomings of the prior art
Number shake table measurement apparatus, it is characterised in that the spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus uses
Single Skeleton Model and double Skeleton Models, the base of the device water tank is caught in the groove in the middle part of shake table, and the company of being screwed
Connect；Form, laser displacement sensor and pressure sensor are installed in water tank side wall；It is identical or not that two structures are placed in water tank
With single lattice frame, a moveable dividing plate is placed between two single lattice framves.The utility model beneficial effect is to pass through spentnuclear fuel
Screen work shaketalle test is stored, gives the truly feasible testing program for measuring the parameters such as fluid force, leg coefficient of friction,
The blank of the experimental study in terms of spent fuel storage rack research has been filled up, has demonstrated the correctness of FEM model, has been nuclear power
The Aseismic Design of factory's spent fuel storage rack provides data and supported, fluid is to structure function when ensure that calculating screen work seismic response
The accuracy of power, it is ensured that core design has rational nargin.Serve not only as research irradiated fuel store in the case of seismic events
The security of screen work, it is also used as the laboratory apparatus of daily teaching.For measurement spent fuel storage rack and screen work, screen work and water
Fluid structurecoupling characteristic between tank wall, builds test-bed, passes through the non-linear effects such as shake table comprehensive test study fluid structurecoupling, friction
Under the influence answered and Study of Seismic load, the fluid force between screen work and screen work, screen work and water tank；Motion of the screen work in water tank
Situation, verification experimental verification is provided for finite element numerical simulation.
Brief description of the drawings
Fig. 1 is screen work fluid structurecoupling parametric vibration platform measurement apparatus structural representation.
Fig. 2 is the top view of screen work fluid structurecoupling parametric vibration platform measurement apparatus.
Fig. 3 is single frame structure schematic diagram.
Fig. 4 is screen work shake table measurement apparatus block diagram.
Fig. 5 is shallow water, deep water expires screen work result of the test and in the presence of fluid force, sliding test result occurs for screen work
Comparison diagram.
Fig. 6 is that acceleration amplitude is 1.06m/s2When screen work comparison of test results figure, wherein, a, be different under the conditions of full water
The relative displacement curve of measuring point；B is the relative displacement curve of different measuring points under shallow water conditions.
Fig. 7 is that screen work in acceleration amplitude is 2.96m/s2Under the conditions of displacement time-history curves；Wherein, a schemes, shown in b figures
Have significant displacement in the bottom of full water screen work and bottom, and displacement curve and misaligned；In the shallow water shown in c figures, d figures
In the case of, there occurs obvious sliding for screen work；
Embodiment
The utility model proposes a kind of spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus；With reference to attached
Figure and embodiment are explained to the utility model.
In the screen work fluid structurecoupling parametric vibration platform measurement apparatus structural representation shown in Fig. 1, Fig. 2, the spentnuclear fuel
Screen work fluid structurecoupling parametric vibration platform measurement apparatus is stored using single Skeleton Model and double Skeleton Models, study respectively screen work with
Coupling effect of seepage rock deformation between water tank, screen work and screen work；The base 3 of the device water tank 1 is caught in the groove 5 at the middle part of shake table 4,
And it is fixedly connected with screw 6；Form 2, laser displacement sensor P1, P2 and pressure sensor P3 are installed in water tank side wall；Single lattice
Frame experiment shares same water tanks with double screen works experiments, i.e., the identical or different single lattice frame 7 of two structures of placement in water tank, and two
A moveable dividing plate 8 is placed between individual single lattice frame.
The moveable dividing plate, when being measured to single lattice frame, the dividing plate 8 in mobile water tank 1 is (such as Fig. 2,3 institutes
Show), adjust water tank size；When the double screen works of measurement, dividing plate 8 is moved to water tank edge.
The size of the water tank is finely tuned by dividing plate 8, ensures that the gap of different screen work types is similar to prototype；And test
In consider the effect of spent fuel storage rack inner fuel component.
The spent fuel storage rack fluid structurecoupling parameter measurement includes (1) measurement screen work leg coefficient of friction；(2) lattice
The Fluid pressure of frame side wall；(3) under seismic condition, displacement time-history curves when screen work produces sliding, toppled；Specific steps：
1) in an experiment, the experiment of single lattice frame shares same water tank with double screen work experiments, i.e., two knots are placed in water tank
The identical or different single lattice frame of structure, a moveable dividing plate is placed between two single lattice framves；When being measured to single lattice frame,
Dividing plate in mobile water tank, water tank size is adjusted, when the double screen works of measurement, dividing plate is moved to water tank edge.Other water tank
Size is finely tuned by dividing plate, ensures that the gap of different screen work types is similar to prototype；And consider inside spent fuel storage rack
The effect of fuel assembly；Therefore according to analogy basins criterion, by the simplification to former component, irradiated fuel assembly test model and original
Type quality is similar, and additional mass is similar；Measuring method is to install form in water tank side wall, and lattice are measured using laser displacement sensor
The displacement of frame；Pressure sensor is installed in water tank side wall, measures the fluid force between screen work and water tank, measurement obtains screen work
Top relative to water tank displacement P1；Displacement P2 of the screen work bottom with respect to water tank；Water tank relative to ground displacement P3；
The experiment of single lattice frame measures the response of screen work, so as to study screen work by applying sine wave, seismic wave to shake table
With the fluid structure interaction of water tank；
The experiment of double screen works measures the response of screen work by applying sine wave, seismic wave to shake table, experimental study screen work with
The fluid structure interaction of screen work；
2) measurement of coefficient of friction, when measuring screen work motion in experiment, first have to determine screen work bottom and ground
Between coefficient of friction, the specific liquid level for being measured as adjusting in water tank of coefficient of friction make it that leg is submerged in water, and lattice
In atmosphere, so in vibration processes, screen work is only produced relative motion to frame body by the frictional force of leg, so closing outer
Power is equal to frictional force, according to friction formula
F=μ N=ma (1)
When relative slide only occurs for screen work, N=mg, coefficient of friction a=μ g are obtained；It is supported that wherein N represents screen work institute
Power, m represent the quality of screen work, μ is coefficient of friction, g as acceleration of gravity；By inputting constant displacement, frequency to shake table
Sine wave, gradually increase the acceleration of shake table；When acceleration is relatively low, screen work slides with pond without relative, when acceleration increases
When relative slide occurs just to screen work greatly, acceleration now is recorded, according to above formula, coefficient of friction formula can be obtained
μ=a/g (2)
3) fluid force is measured, fluid force is by the force sensor measuring installed in water tank side wall.Force snesor leads to
Cross form to be fixed in water tank side wall, when filling water in pond, when vibrating in the presence of external drive, water can be sent out screen work
It is raw to rock so as to the effect strong to side wall, now measure fluid force.
4) sliding, the research for phenomenon of toppling, establish spentnuclear fuel rigid model, it is assumed that screen work is rigid body, and ignores fluid
During additional damping, when screen work does sinusoidal cycles motion, critical slip circle acceleration a be presentcsWith the critical acceleration a that topplesco, table
It is as follows up to formula.
Wherein, the length of side that μ is coefficient of friction, b is 1/2 screen work, the section of screen work is the square, height that h is 1/2 screen work,
mHFor the additional mass of water.In above formula (2), (3), critical slip circle acceleration acs, the critical acceleration a that topplescoMeasured by testing,
μ is obtained by step 3).
The spent fuel storage rack fluid structurecoupling of the spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus
Measurement method of parameters, including (1) measurement screen work leg coefficient of friction；(2) Fluid pressure of screen work side wall；(3) in seismic condition
Under, displacement time-history curves when screen work produces sliding, toppled；Concretely comprise the following steps：
1. first by irradiated fuel store water tank test model be arranged on vibration table on, and with screw by water tank bottom with
Vibration table is fixedly connected.
2. spent fuel storage rack is placed horizontally in water tank, keep keeping between screen work and water tank wall and dividing plate
20mm spacing, and irradiated fuel assembly is placed on inside storage screen work；
3. pond water filling, and ensure that water had not had storage screen work leg just：
4. opening vibration bench control system, water-cooling system, vibration parameters (as shown in Figure 4) are set；Set vibrational waveform be
Sinusoidal Pulse Waves, wave number 5, acceleration maximum are 5m/s2, vibration frequency 2Hz；
5. opening data collecting instrument, acquisition parameter is set；" the on-line monitoring pattern " of click data acquisition system, in real time
Monitor experimental data；
6. opening laser displacement sensor switch, pressure sensor is connected.
7. after starting collection, the " RUN " of click vibrations bench control system starts to test, vibration acceleration is set from maximum
The 10% of value starts, and is gradually increased with 5% size, stops after obvious displacement occurs for screen work；And record each laser position
The time-history curves of movement surveying point and pressure sensor measuring point；Observe the screen work bottom displacement that each off-test acquisition system collects
The data of change；
8. the gradually amplitude of increase shake table output acceleration, untill screen work just starts slip, record now accelerates
Angle value, displacement transducer value, pressure value；When observing that obvious sliding is arranged at screen work bottom, stop experiment, now vibration adds record
Velocity amplitude；Continue water filling into water tank to screen work top 50mm is not crossed, repeat the above method, screen work is slided just when record has water
Dynamic acceleration, displacement transducer value, pressure value；
9. change shake table output frequency, the content of repeat step 8；
10. repairing experiment data result, displacement time-history curves, screen work bottom and ground when obtaining screen work sliding, toppling
Between coefficient of friction, fluid force.
Fig. 5 show the full screen work comparison of test results figure of shallow water, deep water.Vibration frequency 2Hz, water had not had screen work leg just
Situation (shallow water), the acceleration magnitude arrived through test measurement is 2.25m/s2, understand that coefficient of friction is according to formula (2)
0.225；Vibration frequency 2Hz is additionally measured, water did not had screen work 50mm situation (full water), the friction now measured integrally
Coefficient is 0.125；Vibration frequency 5Hz, shallow water, the coefficient of friction now measured are 0.225；Vibration frequency 5Hz, full water, this
When the coefficient of friction that measures be 0.125.It can be found that：Under conditions of same water content, rubbing under two different frequencies
It is identical to wipe coefficient, illustrates that coefficient of friction is unrelated with incoming frequency, it is only relevant with the contact condition on ground with screen work leg；And can
Coefficient of friction during finding out full water is less than coefficient of friction during shallow water, when illustrating to have water, in the presence of fluid force, and screen work
It is more easy to slide.Arrange data and obtain the full screen work experiment of line chart shallow water as shown in Figure 5, deep water, screen work generation sliding examination
Test comparative result figure.Measured under the duty parameter shown in following table,
Fig. 6 is shallow water, the full screen work comparison of test results figure of deep water, and it is 1.06m/s to give screen work in acceleration amplitude2
Under the conditions of displacement time-history curves, wherein, in a figures, P1 points be screen work top relative to the displacement of water tank, P2 points are screen work bottom
Displacement of the portion with respect to pond；In b figures, P3 is displacement of the water tank relative to ground.Curve in shallow water can be seen that P1, P2
2 displacements are essentially 0, i.e. the not significant sliding of screen work.P2 peak value Producing reason is probably due in shallow water bar
Under part, water slug to the form of P2 laser displacement sensors, laser optical path is caused to change, screen work does not have significant displacement.But
It is in a figures, when vibrating beginning, there occurs the slip that displacement amplitude is 1mm for screen work bottom P2 measuring points.This is likely due to add
Speed time-history curves it is discontinuous caused by, the acceleration magnitude at this moment is likely to more than 1.06m/s2.And at first just
After string ripple, the not significant sliding of P2 curves.Illustrate that in acceleration be 1.06m/s2In the case of, screen work is substantially without sliding.
It is 2.96m/s that Fig. 7, which gives screen work in acceleration amplitude,2Under the conditions of displacement time-history curves.Including a in Fig. 7
Figure, b figures, c figures, d figures.Wherein, what a figures, b figures were shown has significant displacement in the bottom of full water screen work and bottom, and displacement is bent
Line is simultaneously misaligned, and the collective effect bottom grid assembly illustrated in fluid force and frictional force is toppled and slid.Shown in c figures, d figures
Shallow water in the case of, there occurs obvious sliding, the displacement curve of top and bottom essentially coincides screen work, does not topple
Phenomenon.C, the screen work acceleration shown in d figures is obviously more than critical acceleration and the critical glide acceleration of toppling.
Claims (1)
- A kind of 1. spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus, it is characterised in that the irradiated fuel store Screen work fluid structurecoupling parametric vibration platform measurement apparatus is using single Skeleton Model and double Skeleton Models, the base card of the device water tank Enter in the groove in the middle part of shake table, and be screwed connection；Form, laser displacement sensor and pressure are installed in water tank side wall to pass Sensor；The identical or different single lattice frame of two structures is placed in water tank, placed between two single lattice framves one movably every Plate.
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| CN207197759U true CN207197759U (en) | 2018-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932161A (en) * | 2017-03-23 | 2017-07-07 | 华北电力大学 | Spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932161A (en) * | 2017-03-23 | 2017-07-07 | 华北电力大学 | Spent fuel storage rack fluid structurecoupling parametric vibration platform measurement apparatus and method |
| CN106932161B (en) * | 2017-03-23 | 2023-07-14 | 华北电力大学 | Device and method for measuring fluid-solid coupling parameter vibrating table of spent fuel storage grillwork |
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