CN109000577B - Cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment - Google Patents
Cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment Download PDFInfo
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- CN109000577B CN109000577B CN201810707740.7A CN201810707740A CN109000577B CN 109000577 B CN109000577 B CN 109000577B CN 201810707740 A CN201810707740 A CN 201810707740A CN 109000577 B CN109000577 B CN 109000577B
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- cladding tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The invention discloses cladding nuclear fuels calibers under a kind of high temperature iodine steam environment to deformation measuring system, including cladding tubes, dispose the double-layer seal hot cell of cladding tubes, the sealing cover and sealed base at cladding tubes both ends, the cylindrical chamber in upper layer hot cell, protrude into the electronic tensile machine in cladding tubes, the load transducer being mounted on electronic tensile machine push rod, the temperature sensor of involucrum bottom of the tube further includes laser displacement sensor and gas inlet tube and gas outlet tube outside lower layer, two sides, hot cell visualization glass；Electronic tensile machine involucrum inner axial tube compress, be radially expanded, iodine steam flows through cylindrical chamber and cladding tubes, which can reliably and effectively realize the measurement of the radial deformation of cladding tubes under high temperature iodine steam environment: steady temperature needed for providing cladding tubes using hot cell；Using various sealing techniques, the iodine steam environment of only involucrum inner surface is realized；Using the visualization glass of lower layer, two sides, hot cell, the measurement of cladding tubes radial deformation is realized by laser displacement sensor.
Description
Technical field
The invention belongs to nuclear fuel and material properties test technical fields, and in particular to core under a kind of high temperature iodine steam environment
Fuel tube radial deformation measuring system.
Background technique
Zircaloy has many advantages, such as low neutron absorption cross-section, corrosion resistance and good mechanical performance, is widely used as core
Power reactor fuel element cladding and other in-pile components.Novel business-purpose fuel stick cladding tubes must be abundant before entering heap
Solve zirconium alloy cladding pipe properties, it is therefore desirable to carry out the test of performance indexes, such as burn into inhales hydrogen, mechanics.It is high
The mechanical property of cladding tubes is a big event in test under warm iodine steam environment.
As the research of domestic and international nuclear energy field zirconium alloy cladding tube material mechanical property is increasingly risen, not equality of temperature is built
Degree, gas with various environment, high-precision cladding tubes deformation measurement experimental system are essential.Therefore it needs to solve in experimental system
The deformation measurement problem of gaseous environment control problem and cladding tubes inside and outside cladding tube temperature control problem, cladding tubes.
However cladding tubes caliber is small, poor rigidity, and cladding tubes surfaces externally and internally is in different gas in practical nuclear reactor
Body environment.Gaseous environment control is zirconium alloy cladding tubing inside and outside the thin-wall tube radial deformation real-time measurement of small diameter tube, cladding tubes
Expect the technological difficulties in performance test.
At present in nuclear fuel and material properties test technical field, have many experimental provisions both at home and abroad to realize cladding tubes
The test of mechanical property.
Such as document " M.N.Gussev, et.Al, " In-situ tube burst testing andhigh-
temperature deformation behavior of candidate materials foraccident tolerant
Fuel cladding, " Journal of NuclearMaterials, 2015, p466. " it describes in detail and is wrapped under hot environment
The deformation and burst tearing test experimental system of package.The experimental system is using digital image correlation technique (DIC technology) to cladding tubes
Deformation is measured and is analyzed, and is simulated involucrum behavior under major accident and is obtained Cladding in Creep data.This systematic survey principle
Simply, precision is high, but complete set of equipments is sufficiently expensive, also can not iodine steam environment in cladding tubes under simulated accident operating condition.
For another example Chinese patent CN 103543074 provides a kind of nuclear fuel cladding tube high-temperature biaxial creep circumferential deformation survey
Amount system, including deformation guide rod, sliding rail, axial displacement locking mechanism and measuring technique unit.The system utilizes grating scale and change
Shape Microprocessor System for Real Time Record accurately obtains stable circumferential deformation measurement data, while saving expensive deformation measuring device.But this
Structure is complicated for experimental system, operating difficulties, can not simulate the cladding tubes dynamic change under true accident and the iodine in cladding tubes
Steam ambient.
For another example " Yan Meng etc., the N36 zirconium alloy cladding pipe Iodine-induced stress corrosion crack under the conditions of circumferential tension, core are dynamic for document
Power engineering, 2015,36 (01): 46-49. " ring specimen of cladding tubes under hot environment is described in detail under iodine steam environment
Mechanics Performance Testing experimental system.High-purity argon gas is passed through the iodine gas cylinder of heating and enters sample loop border room by the experimental system,
Make ring specimen circumferential tension by applying mixing tensile load.This system realizes high temperature iodine steam environment, but can not simulate
The only iodine steam environment of involucrum inner surface in actual response heap is also unable to reach the high-precision real-time measurement of cladding tubes deformation.
Summary of the invention
In order to overcome the above-mentioned problems of the prior art, the object of the present invention is to provide under a kind of high temperature iodine steam environment
Cladding nuclear fuels caliber utilizes laser by controlling the high temperature iodine steam environment of cladding tubes to deformation measuring system, the system
Displacement sensor is reliably and effectively realized under high temperature iodine steam environment to the real-time measurement of cladding tubes deformation: being controlled using hot cell
Hot environment locating for cladding tubes processed；Cylindrical chamber and the cladding tubes for being flowed through sealing according to this using iodine steam, are made in cladding tubes
Surface is under iodine steam environment；Using electronic tensile machine involucrum inner axial tube compression, be radially expanded, control the diameter of cladding tubes
To rate of deformation；Using laser displacement sensor, through the visualization glass of hot cell two sides, to realize the radial direction to cladding tubes
The real-time measurement of deformation.
The purpose of the present invention is be achieved through the following technical solutions:
Cladding nuclear fuels caliber is to deformation measuring system, including cladding nuclear fuels pipe H, bottom under a kind of high temperature iodine steam environment
Seat I, the double-deck hot cell B being mounted on pedestal I, the double-deck hot cell B are divided by the interlayer being mounted at the top of cladding tubes H in it
The upper and lower are mounted at the top of cladding tubes H and are mounted on the sealing cover E of the double-deck hot cell B internal portioning layer central upper, are mounted on packet
The bottom package H and the sealed base L for being mounted on bottom centre in the double-deck hot cell B are mounted on the upper layer the double-deck hot cell B and and cladding tubes
The cylindrical chamber D of H connection, is mounted on the double-deck hot cell B top center and protrudes into the electronic tensile machine A in cladding tubes H, be mounted on
Load transducer C on electronic tensile machine A push rod and in bilayer hot cell B, the visualization positioned at double-deck hot cell B lower layer two sides
Glass G, the laser displacement sensor M being mounted on the outside of visualization glass G, is arranged in the temperature sensor J of the bottom cladding tubes H,
It further include being connected positioned at the gas inlet tube F of the double-deck hot cell upper layer B and connecting cylinder shape chamber D with the double-deck hot cell B lower layer is located at
The gas outlet tube K of the bottom cladding tubes H；Iodine steam flows through cylindrical chamber D and cladding tubes H, passes through control electronic tensile machine A's
Axial displacement realizes that cladding tubes H is radially expanded, and laser displacement sensor M is utilized to carry out the measurement of cladding tubes H radial deformation；
When needing to measure cladding tubes H radial deformation under preset temperature, default iodine steam environment, start bilayer hot cell B
Temperature sensor J measured temperature is stablized after preset temperature, iodine steam is injected by gas inlet tube F by lower layer, then from gas
Body outlet K outflow, makes cladding tubes H inner surface be in iodine steam environment；Electronic tensile machine A axial movement keeps cladding tubes H radial
It expands, the dynamic change of cladding tubes H under simulated accident operating condition；Existed by using laser displacement sensor M through visualization glass G
Line real-time measurement cladding tubes H radial deformation.
Cone seal is carried out using the sealing cover E and sealed base L of copper product respectively at the top and bottom of the cladding tubes H,
The sealing of Y type and O-shaped sealing are carried out between cylindrical chamber D and electronic tensile machine A；Cylindrical chamber D and cladding tubes H-shaped are at height
Closed cavity pumps wherein air as needed, makes vacuum chamber.
The gas inlet tube F and gas outlet tube be respectively welded be installed on cylindrical chamber D and pedestal I on.
The present invention has the following advantages and beneficial effects:
1. present invention installation is simple, cost is relatively low, precision is higher, and easy to operate, high reliablity.
2. the present invention is using the double-deck hot cell, in addition to guaranteeing that involucrum internal and external environment is isolated, additionally it is possible to meet the load on hot cell upper layer
The operating temperature of lotus sensor.
3. cylindrical chamber is arranged on hot cell upper layer in the present invention, prevent iodine steam rotten to electronic tensile machine and load transducer
Erosion.
4. the present invention is capable of providing involucrum pipe internal surface iodine steam environment.
5. the present invention is capable of the radial deformation of real-time measurement cladding tubes, and then passes through control electronic tensile machine, simulated accident
The dynamic change of cladding tubes under operating condition.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, cladding nuclear fuels caliber is special to deformation measuring system under a kind of high temperature iodine steam environment of the present invention
Sign is: including cladding nuclear fuels pipe H, pedestal I, the double-deck hot cell B being mounted on pedestal I, the double-deck hot cell B pass through the peace in it
Interlayer at the top of cladding tubes H is divided into the upper and lower, be mounted at the top of cladding tubes H and be mounted in the double-deck hot cell B every
The sealing cover E of layer central upper, is mounted on the bottom cladding tubes H and is mounted on the sealed base L of bottom centre in the double-deck hot cell B,
The cylindrical chamber D for being mounted on the upper layer the double-deck hot cell B and being connected to cladding tubes H is mounted on the double-deck hot cell B top center and protrudes into
Electronic tensile machine A in cladding tubes H is mounted on the load transducer C on electronic tensile machine A push rod and being located in bilayer hot cell B,
Visualization glass G positioned at double-deck hot cell B lower layer two sides, the laser displacement sensor M being mounted on the outside of visualization glass G, cloth
Set the temperature sensor J in the bottom cladding tubes H, further include positioned at the gas of the double-deck hot cell upper layer B and connecting cylinder shape chamber D into
Mouth pipe F connects the gas outlet tube K of the bottom cladding tubes H with positioned at double-deck hot cell B lower layer；Iodine steam flow through cylindrical chamber D and
Cladding tubes H realizes that cladding tubes H is radially expanded by controlling the axial displacement of electronic tensile machine A, utilizes laser displacement sensor
The measurement of M progress cladding tubes H radial deformation.
The radial deformation of the present embodiment measurement cladding tubes H under specific temperature, specific iodine steam environment, before on-test,
The air in system is completely removed using vacuum pump.
The working principle of the present embodiment is as follows: starting the double-deck hot cell B lower layer, measures cladding tubes H temperature by temperature sensor J
Degree, after temperature is increased to test temperature, iodine steam is injected by gas inlet tube F, then is flowed out from gas outlet tube K, is made
Cladding tubes H inner surface impregnates 30 minutes in iodine steam environment；Control electronic tensile machine A is moved axially under specific mode,
It is radially expanded cladding tubes H, the radial deformation of cladding tubes H is gone out by using laser displacement sensor M real-time measurement.
As the preferred embodiment of the present invention, the sealing cover E of copper product is used at the top and bottom of the cladding tubes H respectively
Cone seal is carried out with sealed base L, the sealing of Y type and O-shaped sealing are carried out between cylindrical chamber D and electronic tensile machine A；Cylinder
Shape chamber D and cladding tubes H-shaped pump wherein air as needed, make vacuum chamber at height closed cavity.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
A specific embodiment of the invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine scope of patent protection.
Claims (3)
1. cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment, it is characterised in that: including nuclear fuel
Cladding tubes (H), pedestal (I) are mounted on the double-deck hot cell (B) on pedestal (I), and the double-deck hot cell (B) is by being mounted on packet in it
Interlayer at the top of package (H) is divided into the upper and lower, be mounted at the top of cladding tubes (H) and be mounted in the double-deck hot cell (B) every
The sealing cover (E) of layer central upper, is mounted on the cladding tubes bottom (H) and is mounted on the sealing of the double-deck hot cell (B) interior bottom centre
Pedestal (L), the cylindrical chamber (D) for being mounted on the double-deck hot cell upper layer (B) and being connected to cladding tubes (H), is mounted on the double-deck hot cell
(B) top center and the electronic tensile machine (A) in cladding tubes (H) is protruded into, be mounted on electronic tensile machine (A) push rod and be located at and is double
Load transducer (C) in layer hot cell (B) is located at the visualization glass (G) of double-deck hot cell (B) lower layer two sides, is mounted on visual
Change the laser displacement sensor (M) on the outside of glass (G), is arranged in the temperature sensor (J) of the bottom cladding tubes (H), further includes position
It is connected in the gas inlet tube (F) of the double-deck hot cell upper layer (B) and connecting cylinder shape chamber (D) with double-deck hot cell (B) lower layer is located at
The gas outlet tube (K) of the bottom cladding tubes (H)；Iodine steam flows through cylindrical chamber (D) and cladding tubes (H), by controlling electronics
The axial displacement of stretching-machine (A) realizes that cladding tubes (H) are radially expanded, and laser displacement sensor (M) is utilized to carry out cladding tubes (H)
The measurement of radial deformation；
When needing to measure cladding tubes (H) radial deformation under preset temperature, default iodine steam environment, start the double-deck hot cell (B)
Lower layer stablizes temperature sensor (J) measured temperature after preset temperature, and iodine steam is injected by gas inlet tube (F), then
It is flowed out from gas outlet tube (K), cladding tubes (H) inner surface is made to be in iodine steam environment；Electronic tensile machine (A) axial movement, makes
Cladding tubes (H) are radially expanded, the dynamic change of cladding tubes (H) under simulated accident operating condition；By using laser displacement sensor (M)
Through visualization glass (G) On-line sampling system cladding tubes (H) radial deformation.
2. cladding nuclear fuels caliber is special to deformation measuring system under a kind of high temperature iodine steam environment as described in claim 1
Sign is: carrying out taper using the sealing cover (E) of copper product and sealed base (L) respectively at the top and bottom of the cladding tubes (H)
Sealing carries out the sealing of Y type and O-shaped sealing between cylindrical chamber (D) and electronic tensile machine (A)；Cylindrical chamber (D) and involucrum
It manages (H) and forms height closed cavity, pump wherein air, make vacuum chamber.
3. cladding nuclear fuels caliber is special to deformation measuring system under a kind of high temperature iodine steam environment as described in claim 1
Sign is: the gas inlet tube (F) and gas outlet tube be respectively welded be installed on cylindrical chamber (D) and pedestal (I) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707740.7A CN109000577B (en) | 2018-07-02 | 2018-07-02 | Cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707740.7A CN109000577B (en) | 2018-07-02 | 2018-07-02 | Cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment |
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| Publication Number | Publication Date |
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| CN109000577A CN109000577A (en) | 2018-12-14 |
| CN109000577B true CN109000577B (en) | 2019-05-10 |
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| CN201810707740.7A Active CN109000577B (en) | 2018-07-02 | 2018-07-02 | Cladding nuclear fuels caliber is to deformation measuring system under a kind of high temperature iodine steam environment |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110361445B (en) * | 2019-07-30 | 2020-10-27 | 西安交通大学 | Multi-parameter high-selectivity CMUTs gas sensor and use and preparation method thereof |
| CN110689978B (en) * | 2019-09-27 | 2020-12-22 | 西安交通大学 | Iodine steam generation and online detection recovery system for mandrel test |
| CN110660496B (en) * | 2019-09-27 | 2020-12-08 | 西安交通大学 | Real-time monitoring system for rupture and failure of cladding for high-temperature mandrel test |
| CN110761785B (en) * | 2019-11-26 | 2024-01-23 | 四川大学 | Pressure maintaining cabin structure with glass window |
| CN113776936B (en) * | 2021-08-17 | 2022-10-28 | 中国原子能科学研究院 | Test device for simulating mechanical interaction of pellet cladding outside reactor |
| CN114676523A (en) * | 2022-03-31 | 2022-06-28 | 中广核研究院有限公司 | Creep deformation method and device for finite-length cladding tube and computer equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5260218A (en) * | 1990-10-29 | 1993-11-09 | Combustion Engineering, Inc. | Autoclave corrosion test for zirconium alloys |
| CN202221396U (en) * | 2011-08-22 | 2012-05-16 | 中国核动力研究设计院 | Sealing device for internal pressure blasting test of radioactive metal tube |
| CN202304761U (en) * | 2011-08-22 | 2012-07-04 | 中国核动力研究设计院 | Data measuring device for high-temperature internal pressure burst test of metal tube |
| CN103543074B (en) * | 2013-10-12 | 2015-08-12 | 中国核动力研究设计院 | Cladding nuclear fuels pipe high temperature biaxial creep circumferential deformation measuring system and measuring method |
| CN108051321B (en) * | 2017-12-20 | 2023-08-25 | 广东核电合营有限公司 | Internal pressure explosion test device and test method for cladding tube |
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