CN107389467A - A kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property - Google Patents
A kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property Download PDFInfo
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- CN107389467A CN107389467A CN201710485755.9A CN201710485755A CN107389467A CN 107389467 A CN107389467 A CN 107389467A CN 201710485755 A CN201710485755 A CN 201710485755A CN 107389467 A CN107389467 A CN 107389467A
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- Prior art keywords
- spentnuclear fuel
- mechanical property
- involucrum
- fuel involucrum
- temperature mechanical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention relates to a kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property, including spentnuclear fuel involucrum sample, thermocouple retainer ring is provided with the outside of spentnuclear fuel involucrum sample, metal cap is cased with one end of spentnuclear fuel involucrum sample, the cone screw that one inside is provided with through hole outwards passes on the inside of the metal cap, and fixed by nut and metal cap, a metal o-ring is placed among the screw and metal cap, the through hole of the screw is used to insert pressure guiding pipe, extension rod is connected in the end of the nut, pressure guiding pipe passes through the endoporus of the extension tube, and it is fixedly connected with the impulse pipe joint outside the extension rod other end.The present invention possesses the features such as bearing capacity for keeping good seal, link position bearing capacity to be more than synthermal lower involucrum under measurement clad temperature, the integrality for keeping weary involucrum oxide-film, high temperature, conveniently insert or detach high-temperature heating equipment sample, meets the needs that spentnuclear fuel involucrum carries out high-temperature mechanical property experiment.
Description
Technical field
The present invention relates to the experiment simulator of spentnuclear fuel in nuclear industry, and in particular to one kind simulation spentnuclear fuel involucrum high temperature
The device of mechanical test.
Background technology
Spent fuel rods involucrum holding structure integrality is for preventing extensive radioactive material under Spent Fuel Pool accident conditions
Matter release is significant, therefore, it is necessary to correlation test is carried out to spentnuclear fuel involucrum, to determine that the performance of spentnuclear fuel involucrum refers to
Mark, it is to lose to take measures to provide foundation after cold accident conditions occurs in Spent Fuel Pool.
In the performance indications of spentnuclear fuel involucrum, high temperature mechanical strength is an important indicator, and it characterizes spentnuclear fuel involucrum and existed
The ability of internal gas pressure is resisted under high temperature.High temperature mechanical strength can be obtained using high temperature explosion bulge test.
For zircaloy fuel rod clad, after being run in heap, certain thickness oxidation can be produced outside involucrum
Film, the presence of oxide-film can influence the conductivity of heat and intensity of spentnuclear fuel involucrum, in order that the high-temperature mechanical property of spentnuclear fuel involucrum
Experiment is more genuine and believable, should be noted to protect oxide-film not to be destroyed during experiment.
Carrying out the experiment of spentnuclear fuel involucrum high-temperature mechanical property needs to design test battery device, and experimental rig should be able to ensure
Meet measurement clad temperature, measure the requirement of spentnuclear fuel involucrum high temperature (at least 700 DEG C) mechanical performance.
The content of the invention
The purpose of the present invention is the needs for spentnuclear fuel involucrum correlation test, there is provided a kind of experiment demand that disclosure satisfy that
Simulate the device of spentnuclear fuel involucrum high-temperature mechanical property experiment.
Technical scheme is as follows：A kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property, including it is weary
Fuel can sample, spentnuclear fuel involucrum sample outside are provided with thermocouple retainer ring, gold are cased with one end of spentnuclear fuel involucrum sample
Belong to cap, the screw that an inside is provided with through hole outwards passes on the inside of the metal cap, and is fixed by nut and metal cap, institute
One metal o-ring of placement between screw and the metal cap is stated, the screw passes through the endoporus of the metal o-ring, institute
The through hole for stating screw is used to insert pressure guiding pipe, and extension rod is connected in the end of the nut, and pressure guiding pipe passes through the extension tube
Endoporus, and be fixedly connected with the impulse pipe joint.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, the pressure guiding pipe
To be located at lower surface inside metal cap with the screw concordant and be welded and fixed for bottom.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, the pressure guiding pipe
Upper end fixed with pressure guiding pipe weld.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, the metal cap
It is interference fitted with the end of spentnuclear fuel involucrum sample.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, in metal cap
Metal o-ring is arranged with the screw of side.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, the nut is total to
There are two, the total height after two nuts are tightened is not more than the length that the screw stretches out metal cap.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, the extension rod
End be welded and fixed with the nut end；Extension rod uses stainless steel hollow tube, outer tube diameter and spentnuclear fuel involucrum sample
Caliber is identical.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, described impulse
Pipe joint includes the joint inner body and connector exterior part being mutually arranged.
Further, the device that simulation spentnuclear fuel involucrum high-temperature mechanical property is tested as described above, wherein, outside the joint
Portion part top is to be externally threaded cylindric, and bottom is prism-shaped；Joint inner body is T-shaped post, T-shaped post upper diameter
More than the internal orifice dimension of the connector exterior part, lower diameter is slightly less than the internal orifice dimension of connector exterior part.
Beneficial effects of the present invention are as follows：It is provided by the present invention a kind of for simulating spentnuclear fuel involucrum high-temperature mechanical property
The device of experiment, it is connected by using the form of screw collocation sealing ring with metal cap, and mechanical fasteners, the knot is carried out with nut
When structure can guarantee that involucrum internal pressure increases during experiment, metal o-ring pressure becomes big, and sealing effectiveness is more preferable, ensures
Experiment is smoothed out.Impulse pipe joint ensure that the sealed connection of experimental rig and air supply plant, and the joint is designed as living
Dynamic formula ensure that the facility operated during experiment；Extension rod can be by experimental rig easily from adding during ensure that experiment
Pulled and pushed in thermal.The it is proposed of the present invention meets the needs that spentnuclear fuel involucrum carries out high-temperature mechanical property experiment.
Brief description of the drawings
Fig. 1 is the structural representation that spentnuclear fuel involucrum high-temperature mechanical property experimental rig is simulated in the specific embodiment of the invention
Figure.
In figure, the metal cap 6. of 1. 4. metal o-ring of spentnuclear fuel involucrum sample 2. thermocouple retainer ring, 3. screw 5.
The joint inner body of 11. connector exterior part of nut I 7. nut, II 8. extension rod, 9. pressure guiding pipe, 10. impulse pipe joints 12.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
The invention provides a kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property, the device possesses measurement bag
Good seal, joint location bearing capacity is kept to be more than under shell temperature, the integrality for keeping weary involucrum oxide-film, high temperature same
At a temperature of involucrum bearing capacity, conveniently sample is inserted or the features such as detach high-temperature heating equipment.
To ensure the integrality of involucrum outer surface oxide film, welding method can not be used directly by the end plug with air-filled pore
It is directly welded on involucrum, it is necessary to design special mechanical structure, on the premise of oxide-film is not damaged, outside can be connected and filled
Pressure device reaches pressurising purpose, and and can ensures to remain pressure during experiment.
For the pressurize purpose under the state of reaching a high temperature, it is necessary to consider that sealing is asked in the design of mechanical structure link position
Topic.
It can easily be pulled and pushed for guarantee test in heater, special extension fixture need to be designed, extension fixture needs
The pressurising pressure holding function of sample is not influenceed.
It is convenient for pressurising during guarantee test, special joint need to be designed, joint demander is just connected with air supply plant.
To realize above-mentioned technical requirements, a kind of dress for simulating spentnuclear fuel involucrum mechanical test provided by the present invention
Put, include following 5 part：Spentnuclear fuel involucrum sample, thermocouple fixing device, extension rod, extension rod and involucrum experiment connector,
Pressure guiding pipe and its joint.
As shown in figure 1, spentnuclear fuel involucrum sample 1 is the spentnuclear fuel involucrum of one end end plug welded seal and another end opening,
Thermocouple fixing device uses thermocouple retainer ring 2, is set on spentnuclear fuel involucrum sample and is fixed.Spentnuclear fuel involucrum tries
The openend of sample 1 is cased with metal cap 5, and the screw 3 that an inside is provided with through hole outwards passes (i.e. from the inner side of the metal cap 5
Pass from bottom to top), and fixed by nut and metal cap 5, a metal is placed between the screw 3 and the metal cap 5
Sealing ring 4, the screw 3 pass through the endoporus of the metal o-ring 4, and nut shares two, respectively nut I6 and nut II
7.The through hole of the screw 3 is used to insert pressure guiding pipe 9, connects extension rod 8 in the end of the nut II 7, pressure guiding pipe 9 passes through institute
The endoporus of extension tube 8 is stated, and is fixedly connected with the impulse pipe joint 10.The design of metal cap 5, screw 3 and sealing ring 4 ensures
On the premise of involucrum outer surface oxide film is not damaged, outside pressurizing device can be connected and reach pressurising purpose, and can ensures
Pressure is remained during experiment.
Extension rod 8 uses stainless steel hollow tubule, and outer tube diameter is identical with involucrum caliber, and wall thickness is close with can wall thickness or omits
Thickness, length of tube do not do particular provisions, and convenient inserted from heater is extracted out.
Mechanical connection shape of the extension rod 8 with the interface section of spentnuclear fuel involucrum sample 1 using two nuts 6,7 of collocation of screw 3
Formula, in order to avoid running damage may occur when pressure is larger for single nut, two nut structures are designed herein.In screw 3
Portion's perforate, pressure guiding pipe 9 are inserted, and the bottom of pressure guiding pipe 9 is concordant with the lower surface of screw 3 and is welded and fixed.The outer cover one of screw 3
Individual metal o-ring 4.The up-small and down-big metal cap 5 of an endoporus is processed, the lower inner diameter of metal cap 5 is equal to spentnuclear fuel involucrum sample
1 external diameter, upper inner diameter are equal to the external diameter of screw 3.Total height after two nuts 6,7 are tightened stretches out metal cap 5 no more than screw 3
Length.
During installation, first by screw 3, metal o-ring 4, metal cap 5, nut I6, nut II 7, extension rod 8 in order by
Pressure guiding pipe 9 is sealed in successively, and pressure guiding pipe 9 and the lower surface of screw 3 are welded and fixed, and hereafter, metal cap 5 is inserted in into spentnuclear fuel involucrum
The interface of sample 1 (interference fit), nut I6 and nut II 7 are screwed into screw respectively, to ensure the sealing of metal o-ring 4,
Extra outside pulling force need to be applied on pressure guiding pipe 9 when tightening nut I6 and nut II 7.After tightening, by extension rod 8 and spiral shell
Mother II 7 is welded and fixed, and is finally again welded and fixed movable impulse pipe joint 10 and pressure guiding pipe 9.
Pressure guiding pipe 9 is external diameter much smaller than spentnuclear fuel involucrum sample 1 and the metal tube (standard key) of the internal diameter of extension rod 8, spiral shell
Nail 3 and coupler bore size slightly larger than the external diameter size of pressure guiding pipe 9 to process, to facilitate the insertion of pressure guiding pipe 9.Impulse pipe joint 10
For movable, including the joint inner body 12 and connector exterior part 11 being mutually arranged, as shown in figure 1, zero inside joint
Part 12 is inserted in connector exterior part 11, can be moved up and down and is freely rotatable.The top of connector exterior part 11 is to be tapped with outer spiral shell
Line it is cylindric, bottom is the hexa-prism (instrument such as convenient use spanner is operated) of similar nut, joint inner body
12 be T-shaped post, and upper diameter is more than exterior part internal orifice dimension, and lower diameter is slightly less than exterior part internal orifice dimension, internal bore side
Just pressure guiding pipe 9 is inserted, and upper end is welded and fixed with pressure guiding pipe 9.
During experiment, above-mentioned thermocouple retainer ring 2 is accessed into thermocouple one end, other end cut-in temperature display instrument,
And be connected impulse pipe joint 10 with air supply plant and pressure monitoring instrument, whole experimental rig is put into hot environment afterwards
In, pressurization carries out high-temperature mechanical property experiment.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if belonging to the model of the claims in the present invention and its equivalent technology to these modifications and variations of the present invention
Within enclosing, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of device for simulating the experiment of spentnuclear fuel involucrum high-temperature mechanical property, including spentnuclear fuel involucrum sample (1), spentnuclear fuel bag
Thermocouple retainer ring (2) is provided with the outside of shell sample (1), it is characterised in that：Metal is cased with one end of spentnuclear fuel involucrum sample (1)
Cap (5), the screw (3) that an inside is provided with through hole outwards passes on the inside of the metal cap (5), and passes through nut and metal cap
(5) fixed, the through hole of the screw (3) is used to insert pressure guiding pipe (9), in the end of nut connection extension rod (8), extends
The other end of bar (8) sets impulse pipe joint (10), and the pressure guiding pipe (9) passes through the endoporus of the extension tube (8), and with it is described
Impulse pipe joint (10) is fixedly connected.
2. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1, it is characterised in that：In metal
Metal o-ring (4) is arranged with the screw (3) on the inside of cap (5).
3. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1 or 2, it is characterised in that：Institute
State the bottom of pressure guiding pipe (9) and the screw (3) to be located at lower surface inside metal cap concordant and be welded and fixed.
4. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 3, it is characterised in that：It is described to draw
The upper end of pressure pipe (9) is welded and fixed with impulse pipe joint (10).
5. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1 or 2, it is characterised in that：Institute
The end for stating metal cap (5) and spentnuclear fuel involucrum sample (1) is interference fitted.
6. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1 or 2, it is characterised in that：Institute
State nut and share two, the total height after two nuts (5,6) are tightened is not more than the length that the screw (3) stretches out metal cap (5)
Degree.
7. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1 or 2, it is characterised in that：Institute
The end and the nut end for stating extension rod (8) are welded and fixed.
8. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 7, it is characterised in that：Extension rod
(8) stainless steel hollow tube is used, outer tube diameter is identical with the caliber of spentnuclear fuel involucrum sample.
9. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 1 or 2, it is characterised in that：Institute
The impulse pipe joint (10) stated includes the joint inner body (12) and connector exterior part (11) being mutually arranged.
10. the device of simulation spentnuclear fuel involucrum high-temperature mechanical property experiment as claimed in claim 9, it is characterised in that：It is described
Connector exterior part (11) top is to be externally threaded cylindric, and bottom is prism-shaped；Joint inner body (12) is T-shaped
Post, T-shaped post upper diameter are more than the internal orifice dimension of the connector exterior part, and lower diameter is slightly less than the endoporus of connector exterior part
Footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710485755.9A CN107389467B (en) | 2017-06-23 | 2017-06-23 | Device for simulating spent fuel cladding high-temperature mechanical performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710485755.9A CN107389467B (en) | 2017-06-23 | 2017-06-23 | Device for simulating spent fuel cladding high-temperature mechanical performance test |
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| CN107389467A true CN107389467A (en) | 2017-11-24 |
| CN107389467B CN107389467B (en) | 2022-09-27 |
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| CN201710485755.9A Active CN107389467B (en) | 2017-06-23 | 2017-06-23 | Device for simulating spent fuel cladding high-temperature mechanical performance test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733927A (en) * | 2018-05-22 | 2018-11-02 | 中国核电工程有限公司 | A method of calculating the critical strain energy density of spentnuclear fuel clad failure |
| CN112816328A (en) * | 2020-11-27 | 2021-05-18 | 中核北方核燃料元件有限公司 | Device and method for hydraulic explosion detection of annular fuel assembly fuel rod |
| CN117740249A (en) * | 2023-11-28 | 2024-03-22 | 中国核电工程有限公司 | Test device and sealing test method |
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| CN108733927B (en) * | 2018-05-22 | 2023-07-25 | 中国核电工程有限公司 | Method for calculating critical strain energy density of spent fuel cladding damage |
| CN112816328A (en) * | 2020-11-27 | 2021-05-18 | 中核北方核燃料元件有限公司 | Device and method for hydraulic explosion detection of annular fuel assembly fuel rod |
| CN117740249A (en) * | 2023-11-28 | 2024-03-22 | 中国核电工程有限公司 | Test device and sealing test method |
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| Publication number | Publication date |
|---|---|
| CN107389467B (en) | 2022-09-27 |
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