CN109273106A - A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics - Google Patents
A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics Download PDFInfo
- Publication number
- CN109273106A CN109273106A CN201811281181.4A CN201811281181A CN109273106A CN 109273106 A CN109273106 A CN 109273106A CN 201811281181 A CN201811281181 A CN 201811281181A CN 109273106 A CN109273106 A CN 109273106A
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- Prior art keywords
- lattice cell
- screen work
- fuel assembly
- cell stiffness
- nuclear fuel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003758 nuclear fuel Substances 0.000 title claims abstract description 19
- 238000005259 measurement Methods 0.000 claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 claims abstract description 26
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims description 32
- 230000003321 amplification Effects 0.000 claims description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 17
- 238000013480 data collection Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012937 correction Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 201000003373 familial cold autoinflammatory syndrome 3 Diseases 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 108700002783 roundabout Proteins 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/34—Spacer grids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
It is an object of the invention to disclose a kind of device for measuring nuclear fuel assembly screen work lattice cell stiffness characteristics, it includes suspension apparatus, lattice cell stiffness measurement tool and control system, the upper end of the suspension apparatus is fixed, the lower end of the suspension apparatus is connected with the lattice cell stiffness measurement tool, and the control system is communicated with each other with the lattice cell stiffness measurement tool and connect；Compared with prior art, the spring in screen work lattice cell can be loaded simultaneously with just convex, additionally uses the technologies such as displacement correction, eccentric force adjustment, screen work lattice cell stiffness characteristics data can be directly obtained in high precision, achieved the object of the present invention.
Description
Technical field
The present invention relates to a kind of detection devices of nuclear reactor fuel assembly, in particular to a kind of for measuring fuel
The device of component screen work lattice cell stiffness characteristics.
Background technique
Fuel assembly is the critical component of nuclear reactor, it occurs nuclear fission reaction and generates heat and pass to cooling
Agent.Fuel assembly is made of the fuel rod of certain arrangement mode and the fuel assembly skeleton of fixed constraint fuel rod.Fuel assembly
There are several grid spacers on skeleton, it is axially spaced apart.Grid spacer be formed by welding mutually by metal band it is rectangular
Lattice structure, just convex grasping system can provide the spring-of rigid support and spring composition in lattice cell for fuel rod positioning
Chucking power, manufacture, transport, operation etc. of the spring-rigidity grasping system stiffness characteristics, that is, lattice cell stiffness characteristics to fuel assembly
Characteristic under operating condition has a significant impact, and is one of key characteristic of fuel assembly.
Due to spacer grid of fuel assembly lattice cell structure and complex boundary, while fuel rod is inserted into after new screen work in lattice cell
Certain surrender may occur for spring, can need to accurately obtain screen work lattice cell chucking power using research technique.Due to screen work grid
Elemental size is small and spring is respectively positioned on inside screen work lattice cell with just convex, while screen work lattice cell spring practical distortion amount is small, these factors
Causing screen work lattice cell stiffness characteristics to measure, difficulty is big, required precision is high.Generally use material universal testing machine, to spring and just it is convex
Load obtains its stiffness characteristics respectively, then extrapolates lattice cell overall stiffness characteristic, this is a kind of round-about way.
It is accordingly required in particular to which a kind of device for measuring nuclear fuel assembly screen work lattice cell stiffness characteristics, above-mentioned existing to solve
There are the problem of.
Summary of the invention
The purpose of the present invention is to provide a kind of devices for measuring nuclear fuel assembly screen work lattice cell stiffness characteristics, for existing
The deficiency of technology, can simultaneously to spring and just it is convex load and high-precision obtain lattice cell spring-rigidity grasping system it is rigid
Spend characteristic.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics, which is characterized in that it includes suspension apparatus, grid
First stiffness measurement tool and control system, the upper end of the suspension apparatus are fixed, the lower end of the suspension apparatus and the lattice cell
Stiffness measurement tool is connected, and the control system is communicated with each other with the lattice cell stiffness measurement tool and connect.This measurement core
Fuel assembly screen work lattice cell stiffness characteristics, can also be made of lattice cell stiffness measurement tool and control system.
In one embodiment of the invention, the suspension apparatus is by height regulating mechanism, elastic construction, load-bearing flexible body
And connector composition, the top of the height regulating mechanism are fixed in a load-carrying members, the bottom of the height regulating mechanism
It is connected by head-rope with the connector, spring is provided between the head-rope, the connector and the lattice cell is rigid
Degree measuring tool is connected.
Further, the height regulating mechanism includes height adjustment bolt and locking nut, is provided in the fixed beam
The bolt hole matched with height adjustment bolt.
Further, the connector is a suspender.
In one embodiment of the invention, the lattice cell stiffness measurement tool is made of loading mechanism and servo motor,
The upper end of the loading mechanism is arranged in by a servo motor mounting base for the servo motor, and the lower end of the loading mechanism is stretched
Enter in screen work lattice cell and the spring in screen work lattice cell is loaded with just convex, is provided with and adds in the shaft of the servo motor
Carry nut.
Further, the loading mechanism is interconnected to form by least two load lever arm by rotation axis.
Further, foil gauge and displacement sensor are provided on the loading mechanism.
Further, the bottom of the loading mechanism is additionally provided with the depth that limitation loading mechanism protrudes into lattice cell to guarantee to add
Carry the limiting device of positional accuracy.
In one embodiment of the invention, the control system is by step motor control system, strain signal amplification system
System, displacement signal amplification system, data collection system and computer system composition, the output end of the computer system with it is described
The input terminal of step motor control system communicates with each other connection, the input terminal of the computer system and the data collection system
Output end communicate with each other connection, the output with the strain signal amplification system respectively of the input terminal of the data collection system
The output end of end and institute's displacement signal amplification system communicates with each other connection, the output end of the step motor control system, institute
The input terminal of the input terminal and institute's displacement signal amplification system of stating strain signal amplification system is surveyed with the lattice cell rigidity respectively
Amount tool communicates with each other connection.
The device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics of the invention compared with prior art being capable of plaid matching
Spring in frame lattice cell loads simultaneously with just convex, additionally uses the technologies such as displacement correction, eccentric force adjustment, being capable of high-precision
Screen work lattice cell stiffness characteristics data are directly obtained, are achieved the object of the present invention.
The features of the present invention sees the detailed description of the drawings of the present case and following preferable embodiment and obtains clearly
Solution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics of the invention；
Fig. 2 is the structural schematic diagram of lattice cell stiffness measurement tool of the invention；
Fig. 3 is the structural schematic diagram of control system of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment
As shown in Figure 1 to Figure 3, the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics of the invention, it includes outstanding
Device for hoisting 10, lattice cell stiffness measurement tool 20 and control system 30, the upper end of suspension apparatus 10 are fixed, the lower end of suspension apparatus 10
It is connected with lattice cell stiffness measurement tool 20, control system 30 is communicated with each other with lattice cell stiffness measurement tool 20 and connect.
In the present embodiment, suspension apparatus 10 by height adjustment bolt 11, locking nut 12, fixed beam 13, head-rope 14,
Spring 15 and suspension hook 16 form.
Bolt hole in load-carrying members 13 and height adjustment bolt 11 cooperate, and adjust bolt 11 by rotation height, can be with
It realizes moving up and down for suspender 16, height adjustment bolt 11 can be locked using locking nut 12 and avoid pine in the course of work
It is dynamic.Suspender 16 still has certain axial movement after the deformability of elastic construction 15 can make height adjustment bolt 11 lock
Ability, it is ensured that suspender 16 and its lattice cell stiffness measurement tool 20 of suspention are in suspended state.
Meanwhile the link position of suspender 16 and lattice cell stiffness measurement tool 20 may be implemented at lattice cell stiffness measurement tool 20
In vertical state, it is ensured that loading direction it is accurate, avoid eccentric force from having an adverse effect measurement result.It is wanted when to measurement accuracy
When asking not high, suspension apparatus can be not suitable for.
Suspension apparatus 10 mainly undertakes the weight of lattice cell stiffness measurement tool 20, and with lattice cell stiffness measurement tool 20
Function of regulating height thereof.Suspension apparatus 10 can make the loading section of lattice cell stiffness measurement tool 20 in screen work lattice cell in suspension
State, not by 20 gravity of lattice cell stiffness measurement tool and associated friction factor while realizing it to lattice cell spring and just convex load
Influence.
Lattice cell stiffness measurement tool 20 by servo motor mounting base 21, load nut 22, servo motor 23, foil gauge 24,
Lever arm 25, load lever arm 26, limiting device 27, displacement sensor 28 and reset spring 29 is loaded to form.
Load lever arm 25 connects to form load lever mechanism by pin with load lever arm 26, and lower end can be protruded into
The spring in screen work lattice cell is loaded with just convex in screen work lattice cell.The lower end of load lever arm 25 loads spring,
The lower end for loading lever arm 26 is loaded to just convex.Servo motor mounting base 21 is connect with the upper end of load lever arm 26.It watches
It takes motor 23 to be mounted in servo motor mounting base 21, be watched in threaded shaft with load nut 22 on servo motor 23
Load nut 22 can push the upper end drive load lever mechanism fortune of load lever arm 25 along shaft when taking the rotation of 23 axis of motor
It is dynamic.When loading nut rollback, reset spring 29 can assist load lever arm 25 to retract.It is pasted with and answers on load lever arm 25
Become piece 24, foil gauge 24 can be demarcated using standard test weight, obtain the reading relationship of reading strain and load.It is loading
Displacement sensor 28, the position of the detection load lever arm 25 of displacement sensor 28 are installed on the load lever arm 26 of lever mechanism
It moves, using the scaling principle of load lever mechanism, to spring and just convex load deflection below available load lever mechanism.
Since screen work lattice cell size is narrow, load lever mechanism has certain flexibility, can be measured according to foil gauge 24
Load reading load deflection is modified, to improve measurement accuracy.Limiting device 27 can limit load lever mechanism
The depth in lattice cell is protruded into, guarantees the accuracy of loading position.When not using suspension apparatus 10, limiting device 27 is undertaken grid
The weight of first stiffness measurement tool 20.
Lattice cell stiffness measurement tool 20 can be realized to spring and just convex load.It is equipped with and answers on load lever mechanism
Become piece 24 and displacement sensor 28, can while load the displacement (i.e. lattice cell spring and rigid convex deflection) of measurement load and
Its load applied.Servo motor 23 can be under the driving of control system 30, and drive load lever mechanism realizes specified open
Resultant motion.
Control system 30 by step motor control system 31, strain signal amplification system 32, displacement signal amplification system 33,
Data collection system 34 and computer system 35 form, and the output end of computer system 35 is defeated with step motor control system 31
Enter end and communicate with each other connection, the input terminal of computer system 35 is communicated with each other with the output end of data collection system 34 to be connect, number
It is defeated with the output end of strain signal amplification system 32 and displacement signal amplification system 33 respectively according to the input terminal of acquisition system 34
Outlet communicates with each other connection, and the output end of step motor control system 31 is communicated with each other with the control terminal of servo motor 23 to be connect,
The input terminal of strain signal amplification system 32 is communicated with each other with foil gauge 24 and is connect, the input terminal of displacement signal amplification system 33 with
Displacement sensor 28 communicates with each other connection.
Computer system 35 can according to data collection system 34 acquire the high-precision assumed (specified) load of reading strain as a result,
And it realizes and amendment in real time is carried out to obtain high-precision displacement readings to displacement readings.Computer system 35 is acquired according to data
The displacement and load reading that system 34 obtains control stepper motor, realize displacement control mode or load control model pair
Screen work lattice cell is loaded.
Control system 30 mainly realizes the control to servo motor 23, realizes the movement of loading mechanism.The system can root
Raising displacement measurement accuracy is modified to displacement readings according to the load reading on lattice cell measuring tool, and with displacement and load control
Molding formula executes test assignment.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of device for measuring nuclear fuel assembly screen work lattice cell stiffness characteristics, which is characterized in that it includes suspension apparatus, lattice cell
The upper end of stiffness measurement tool and control system, the suspension apparatus is fixed, and the lower end of the suspension apparatus and the lattice cell are rigid
Degree measuring tool is connected, and the control system is communicated with each other with the lattice cell stiffness measurement tool and connect.This measurement core combustion
Expect component screen work lattice cell stiffness characteristics, can also be made of lattice cell stiffness measurement tool and control system.
2. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as described in claim 1, which is characterized in that described outstanding
Device for hoisting is made of height regulating mechanism, elastic construction, load-bearing flexible body and connector, and the top of the height regulating mechanism is solid
It is scheduled in a load-carrying members, the bottom of the height regulating mechanism is connected by head-rope with the connector, the load-bearing
Settable elastic construction between rope, the connector are connected with the lattice cell stiffness measurement tool.
3. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as claimed in claim 2, which is characterized in that the height
Degree adjustment mechanism includes height adjustment bolt and locking nut, is provided in the fixed beam and matches with height adjustment bolt
Bolt hole.
4. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as claimed in claim 2, which is characterized in that the company
Fitting is a suspender.
5. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as described in claim 1, which is characterized in that the grid
First stiffness measurement tool is made of loading mechanism and servo motor, and the servo motor is arranged by a servo motor mounting base
The upper end of the loading mechanism, the lower end of the loading mechanism can protrude into screen work lattice cell in screen work lattice cell spring and just it is convex
It is loaded, load nut is provided in the shaft of the servo motor.
6. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as claimed in claim 5, which is characterized in that described to add
Mounted mechanism is interconnected to form by least two load lever arm by rotating member.
7. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as claimed in claim 5, which is characterized in that described to add
Foil gauge and displacement sensor are provided on mounted mechanism.
8. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as claimed in claim 5, which is characterized in that described to add
The bottom of mounted mechanism is additionally provided with the depth that limitation loading mechanism protrudes into lattice cell to guarantee the limit dress of loading position accuracy
It sets.
9. the device of measurement nuclear fuel assembly screen work lattice cell stiffness characteristics as described in claim 1, which is characterized in that the control
System processed is by step motor control system, strain signal amplification system, displacement signal amplification system, data collection system and calculating
Machine system composition, the output end of the computer system are communicated with each other with the input terminal of the step motor control system and are connect,
The input terminal of the computer system is communicated with each other with the output end of the data collection system and is connect, the data collection system
Input terminal it is mutual with the output end of the output end of the strain signal amplification system and institute's displacement signal amplification system respectively
Communication connection, the output end of the step motor control system, the input terminal of the strain signal amplification system and the displacement
The input terminal of signal amplifying system communicates with each other with the lattice cell stiffness measurement tool connect respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811281181.4A CN109273106A (en) | 2018-10-31 | 2018-10-31 | A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811281181.4A CN109273106A (en) | 2018-10-31 | 2018-10-31 | A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics |
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| CN109273106A true CN109273106A (en) | 2019-01-25 |
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| CN201811281181.4A Pending CN109273106A (en) | 2018-10-31 | 2018-10-31 | A kind of device measuring nuclear fuel assembly screen work lattice cell stiffness characteristics |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110411744A (en) * | 2019-08-21 | 2019-11-05 | 中国船舶重工集团公司第七0四研究所 | Large-scale Low rigidity yielding coupling stiffness test device and method |
| CN114544118A (en) * | 2022-01-21 | 2022-05-27 | 天津大学 | Special fixture for compression test of spacer grid spring |
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| CN110411744A (en) * | 2019-08-21 | 2019-11-05 | 中国船舶重工集团公司第七0四研究所 | Large-scale Low rigidity yielding coupling stiffness test device and method |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |