CN109712730A - A kind of device of the high electric field pulse disintegration spheric fuel element of the fixture containing annulus - Google Patents
A kind of device of the high electric field pulse disintegration spheric fuel element of the fixture containing annulus Download PDFInfo
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- CN109712730A CN109712730A CN201811637823.XA CN201811637823A CN109712730A CN 109712730 A CN109712730 A CN 109712730A CN 201811637823 A CN201811637823 A CN 201811637823A CN 109712730 A CN109712730 A CN 109712730A
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- 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
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
A kind of device of the high electric field pulse disintegration spheric fuel element of the fixture containing annulus, the device contain bracket, elevating mechanism, discharging chamber, high-field electrode, ground electrode and annulus fixture.Elevating mechanism is installed on frame bottom；High-field electrode is fixed on cradle top；Discharging chamber is fixed on elevating mechanism；High-field electrode and ground electrode all use plate；Ground electrode is fixed on discharging chamber bottom, is also used as sieve；Annulus fixture is fixed on ground electrode；Fuel element is adaptively fixed using annulus fixture, is 1~8mm at a distance from high-field electrode.When carrying out high pressure pulse discharge, fuel element is disintegrated by the shock wave that electric discharge generates, fragment is filtered out through ground electrode；Hoistable platform adjusts discharging gap, continues to discharge, until fuel element all disintegrates.The present apparatus can directly disintegrate fuel element completely, and disintegration energy efficiency is high, significantly reduce operating voltage；And there is compact, the points such as do not generate secondary pollution.
Description
Technical field
The present invention relates to a kind of devices of high electric field pulse disintegration spheric fuel element, suitable for solving under radioactivity
The device of body high temperature nuclear reactor spheric fuel element belongs to radioactivity spentnuclear fuel post-processing technology field.
Background technique
High temperature gas cooled reactor spent fuel post-process it is extremely important, in the spheric fuel element structure for needing needle to be used for
Particularity, carry out special disintegrations and study.In various disassembling methods, high electric field pulse method has disintegration speed fast, processing
The characteristics of process does not consume chemical reagent, does not generate secondary waste, does not generate dust is more promising method.
It there is no the device of dedicated high electric field pulse disintegration high temperature nuclear reactor fuel element at present, existing relevant report is to adopt
With commercial high electric field pulse device, cylinder graphite block, TRISO particle, graphite scrap etc. are disintegrated, the problem is that
Energy dissipation phenomenon, disintegration energy efficiency are low.It investigates the reason is that normal purposes is for cracking absolutely due to being commercial device
Edge body or insulator coat the material of a small amount of types of conductors, therefore do not have to consider high-field electrode and ground electrode short circuit during electric discharge
The case where, and crack material of main part be graphite material when, graphite be it is conductive, may result in high-field electrode and ground electrode be short
Road.It is existing in the case where the inside electrical circuit of commercial device can not be changed to prevent Damage by Short Circuit high electric field pulse device
The solution that report uses be between high-field electrode and ground electrode it is artificial increase one section of gap, hit using aqueous medium
Current-limiting resistance when resistance when wearing is as short circuit, which results in the wastes of disintegration energy.
Summary of the invention
The object of the present invention is to provide a kind of devices of the high electric field pulse disintegration spheric fuel element of fixture containing annulus, make
High-field electrode is resistant in relatively low operating at voltages for high electric field pulse method disintegration high temperature nuclear reactor fuel element dedicated unit
With ground electrode short circuit, increase current-limiting resistance without additional, and then physical efficiency amount efficiency is conciliate in the safety for improving system.
Technical scheme is as follows:
A kind of device of the high electric field pulse disintegration spheric fuel element of the fixture containing annulus, the device contain bracket, lifting
Mechanism, high-field electrode, discharging chamber and ground electrode；The elevating mechanism is installed on bracket；Discharging chamber is fixed on lifting
On flattening mechanism；The high-field electrode is mounted on cradle top and insulate with bracket；The ground electrode is fixed on discharging chamber bottom；
It is characterized by: annulus fixture of the described device also containing top with blade；Annulus fixture is fixed on the ground electrode；It is high
Warm heap spheric fuel element is placed on the blade of the annulus fixture, high temperature nuclear reactor spheric fuel element and the high-voltage electricity
The distance between pole is 1~8mm.
Preferably, the shape of the high-field electrode discharge portion is slab construction.
Preferably the body shape of the ground electrode discharge portion is the slab construction with sieve.
Preferably, labyrinth seal structure is used between the discharging chamber and the high-field electrode.
In above-mentioned technical proposal, the elevating mechanism includes hoistable platform, electric putter and stroke measurment element, the row
Journey measuring cell uses resistance scale；Hoistable platform is connect by electric putter with bracket；One end of electric putter is fixed on hoistable platform
On, the other end is fixed on bracket.
Another feature of the present invention is: being provided between the discharging chamber and the high-field electrode prevents side wall from discharging
Insulating concrete cylinder, the insulation cylinder material be polyurethane, polyether-ether-ketone or toughened zirconia ceramics.The high-field electrode and bracket
Between insulation use makrolon material, be coated with UV coating above makrolon material.
The present invention has the following advantages and outstanding effects: 1. the present invention can be directly complete by complete spheric fuel element
Disintegrate；It is approximately 2.6 times of the energy efficiency of optimum embodiment in document report 2. disintegration energy efficiency of the present invention is high；3. this hair
Bright treatment process does not consume chemical reagent, does not generate secondary waste, does not generate dust.4. the present invention is being crushed complete fuel member
When part, about 60kV voltage is worked in, the 200-420kV voltage substantially less than in document report is reduced to high voltage power supply and height
Press the requirement of protection.5. the present invention uses circular ring shape blade Self adapting fixture, device volume is small and exquisite, and water consumption is suitable for less than 1L
As experimental study equipment.
Detailed description of the invention
Fig. 1 is the equal axial sections of apparatus of the present invention.
Fig. 2 is the partial enlarged view of Fig. 1.
Fig. 3 is the further partial enlarged view of Fig. 2.
Fig. 4 is that high temperature nuclear reactor fuel spheric fuel element is placed on the isometric side view on annulus fixture.
Fig. 5 is that high temperature nuclear reactor fuel spheric fuel element adaptively clamps schematic diagram.
Fig. 6 is the schematic diagram in high electric field pulse whole circuit circuit where apparatus of the present invention.
Fig. 7 is the circuit diagram of high-field electrode shorted to earth on-line measuring device contained by apparatus of the present invention.
In figure: 1- bracket；2- elevating mechanism；3- high-field electrode；4- labyrinth seal structure；5- discharging chamber；6- high temperature
Heap spheric fuel element；7- insulating concrete cylinder；8- annulus fixture；9- ground electrode；10- measuring cell；11- electric putter；12- pulse is high
Voltage source；13- high-voltage charging current-limiting resistance；14- high-voltage energy storage capacitor；15- electrion flows resistance；16- electrion is empty
Air cock；The Rogowski coil of 17- survey pulse current；18- device of the present invention；19- lead-acid battery；20- lead-acid battery limit
Flow protective resistance and diode；21- ammeter bypass protection capacitor；22- ammeter bypass protection TVS；23- ammeter current limliting is protected
Protect copper sulphate water resistance；24- ammeter.
Specific embodiment
With reference to the accompanying drawing and specific example, the invention will be further described:
Referring to figure 1, figure 2 and figure 3, the high electric field pulse disintegration ball fuel member of a kind of fixture containing annulus provided by the invention
The device of part contains bracket 1, elevating mechanism 2, high-field electrode 3, discharging chamber 5 and ground electrode 9, and elevating mechanism 2 is installed on bracket 1
On；Discharging chamber 5 is fixed on elevating mechanism 2；High-field electrode 3 is mounted on cradle top and insulate with bracket；Ground electrode 9 is fixed
In discharging chamber bottom.The device also includes the annulus fixture 8 that a top has blade, and the annulus fixture 8 is fixed on
On ground electrode 9, high temperature nuclear reactor spheric fuel element 6 is placed on annulus fixture, high temperature nuclear reactor spheric fuel element 6 and the high pressure
The distance of electrode is 1~8mm.
Referring to Fig. 3, the 3 discharge portion shape of high-field electrode is slab construction, the 7 discharge portion master of ground electrode
Shape is also slab construction, and sieve is had on plate.Selecting plate is that plate can be adaptive to electrode to the reason of electrode
That answers discharges in spheric fuel element or fuel element fragment high spot, handles fuel element or fuel element fragment nearby
Need most the position of processing；Shock wave can increase crushing efficiency between plate toward interflection.Since apparatus of the present invention use
Plate eliminates one section of water space below fuel element sieve, so improving energy efficiency to electrode.In apparatus of the present invention
Under each pulse energy unanimous circumstances of each pulse energy and the embodiment in existing literature, by the member of each pulse disintegration
The mass number energy efficiency of part, the efficiency of the present apparatus are approximately 2.6 times of the efficiency of the optimum embodiment in document.
Simultaneously as present invention employs plates to electrode, can be adaptive it is nearest to fuel element or fuel element
Fragment discharges, so discharging gap is reduced significantly, generally 1-8mm, hence it is evident that less than in existing literature to bulk graphite
The 50mm discharging gap that material fragmentation needs, to significantly reduce electric discharge operating voltage.Therefore, required maximum operating voltage
Also below 60kV.Existing technology, high-voltage DC power supply can directly provide 60kV high direct voltage, then high voltage, need to use
Marx device (charged in parallel-discharged in series) doubles.
Referring to fig. 4 and Fig. 5, have blade at the top of the annulus fixture 8, can when spheric fuel element is unbroken incite somebody to action
It is fixed.If spheric fuel element is not fixed in initial high pressure pulsed discharge, then fuel element can be rolled constantly,
Lead to not be concentrically formed broken notch in fuel element, will be greatly reduced broken efficiency；Once fuel element is broken from spherical shape
It is broken into big fragment, then its spherical geometry robustness disappears, then need not clamp again to it.And in radioactivity, high impulse electricity
Under pressure, high impulse hydraulic condition, the clamping of external energy driving operation operation is needed to be difficult.Therefore, it is necessary to adaptive
Clamp method.To adapt to above-mentioned demand, the circular ring shape blade of design can roll into discharging chamber 5 in spheric fuel element
It is interior that adaptive fixes sphere when preventing in side wall electric discharge insulating materials cylinder 7, under the shock wave in electric discharge,
Blade can be embedded into sphere, further prevent the rolling of ball.Shock wave can concentrate on the surface effect of ball, form broken lack
Mouthful, whole ball is broken into big fragment faster.After forming fragment, circular ring shape blade loses clamping action, but fragment has been at this time
It is easily broken, it is no longer necessary to clamping.
The plate part of the ground electrode 9 has sieve pore, and the ground electrode is also used as sieve simultaneously, for filtering out combustion
Expect the particle after elements breaking apart disintegrates.Ground electrode is also used as sieve simultaneously, can simplify structure, clast discharge of being more convenient for.
It is polycarbonate that the high-field electrode 3, which is installed to the insulating materials used when the bracket 1, and in poly- carbonic acid
UV coating is coated on ester material.This is because high-field electrode will receive strong mechanical shock when high electric field pulse discharges, it is fixed
The insulating materials of high-field electrode has to have good mechanical resistant impact property.In insulating materials, polycarbonate has most
Good mechanical resistant impact property.UV coating be in order to overcome polycarbonate not UV resistant the shortcomings that, increase its service life.
The elevating mechanism 2 includes hoistable platform, electric putter 11 and measuring cell 10, and resistance can be used in measuring cell
Ruler.Power part is to reduce power part volume compared to hydraulic unit as the advantages of power part using electric putter, repeats essence
Degree is high, is easy operation and maintenance；It as the advantages of stroke measurment element is in resistance scale without electronic chip using resistance scale, it can
With the intense electromagnetic pulse shock being resistant to when high electric field pulse electric discharge.
Labyrinth seal structure 4 is used between the discharging chamber 5 and the high-field electrode 3.Due to high-voltage electricity arteries and veins
The shock wave generated when impulse electricity, so that needing reliably sealing just to can guarantee that water is situated between there are moment high hydraulic pressure in discharging chamber 5
Matter does not splash out, but under radioactivity, lacks reliable sealing material.And labyrinth seal does not need additional sealing material,
It is suitable encapsulating method.It is provided with insulating concrete cylinder 7 between the discharging chamber 5 and the high-field electrode 3, for preventing
Side wall electric discharge；Material selection polyurethane, polyether-ether-ketone or the toughened zirconia ceramics of insulating concrete cylinder.Select these types of material be because
For under the conditions of radioactivity, shock wave, they can meet the requirement of insulation performance, mechanical strength, radiation-resistant property simultaneously.
Fig. 6 is the high electric field pulse whole circuit circuit where apparatus of the present invention.High-voltage DC power supply 12 is limited through high-voltage charging
Leakage resistance 13 charges to 7 grades of high-voltage energy storage capacitors 14 in parallel, when charging voltage is more than the threshold value of electrion air switch 16
When, electrion air switch 16 is connected, and positive charge pours in high-field electrode 3, and current potential is constantly increased to high-field electrode 3 and high temperature nuclear reactor
Water space breakdown between spheric fuel element 6, occurs high electric field pulse electric discharge, and positive charge returns to the negative of high-voltage energy storage capacitor
Pole.Directly ground connection is virtual connection for high-voltage DC power supply 12 and ground electrode 9, is because being two using difference in physical cabling
A independent grounding, but the two be switched on the earth, can be with charge balance after through a long time.Survey sieve of pulse current
Family name's coil 17 can isolate measure high pulse current.
Since apparatus of the present invention are only needed using 60kV or less voltage, so apparatus of the present invention can be filled without using Marx
It sets, and high-voltage energy storage capacitor is worked in into charged in parallel-parallel discharge mode, have the advantage that and improve to short circuit current
Tolerance.The 80kV high-voltage energy storage capacitor of pulsed high-voltage is provided for apparatus of the present invention, it is maximum that manufacturer, which provides technical data,
Instant discharge current 25kA.Under normal circumstances, apparatus of the present invention operating voltage is up to 60kV, due to discharge loop conducting wire electricity
Resistance, the influence of parasitic inductance, parasitic capacitance, discharge loop has certain impedance, through measuring, corresponding maximum short-circuit wink
When electric current be 15kA.It is raising energy capacitance set to the tolerance of short circuit current, 7 grades of parallel connections is carried out to high-voltage energy storage capacitor,
And stream design is done.Current equalizing method is to be parallel to high-voltage energy storage capacitor with the flat stainless steel line conductor row of same mechanical size
On copper bar.Since electric resistance of stainless rate is much higher than copper, so flat stainless steel line conductor row is good flows resistance, it is absolutely electric
Resistance value very little, but it is higher relative to copper bar, in electric discharge, each high-voltage energy storage capacitor can be ignored to trunk copper bar apart from different
It influences, the discharge current on each high-voltage energy storage capacitor is relatively uniform.What the electrion flows resistance 15 in Fig. 6 used is exactly flat
Flat stainless steel line conductor row.Through measuring, in high electric field pulse electric discharge, even if encountering short-circuit conditions, each high-voltage energy storage capacitor
Instant discharge current be about 2.2kA, and the 25kA maximum instantaneous discharge current provided far below manufacturer.Therefore, this hair
Bright device is resistant to high-field electrode shorted to earth, and safety is higher, and is the on-line measurement high-field electrode discharging gap side of providing
Just.
Fig. 7 is a kind of circuit diagram of the on-line measurement high-field electrode shorted to earth used in the present invention.By independent
Lead-acid battery 19 contains current-limiting resistance and protection circuit, by high-field electrode 3, high temperature nuclear reactor as signal power source is detected in circuit
Spheric fuel element 6 and ground electrode 9 seal in circuit.Since even pure water also has certain electric conductivity, and in fuel element
During cracking, the conductivity of water, which will be slow, to become larger, it is determined that the mark of 3 shorted to earth of high-field electrode is not pointer electric current
The electric current of table reaches some value, but electric current is mutated with the curve of 3 stroke of high-field electrode, and catastrophe point is short dot.In order to
Measuring device is resistant to intense electromagnetic impact when high electric field pulse electric discharge, and present invention employs non-electromagnetic sensors, and
The salvos such as filtering, Transient Suppression Diode, which are buffered, by RC capacitance-resistance protects detecting element.Particularly, RC capacitance-resistance buffering filtering
Resistance be suitable for using copper sulphate water resistance because water resistance is easy to make, power density is big.
Apparatus of the present invention, which are resistant to high-field electrode shorted to earth, can determine high-field electrode over the ground by online shorted to earth
Stroke be 0, be exactly the distance of high-field electrode over the ground, it can thereby determine that height then with the mobile one end distance of this zero point
The size of piezoelectric pulses discharging gap.It is using the reason of such determining discharging gap method, forms one end of discharging gap
It is fuel element fragment, shape very irregular；Meanwhile there are pulse high-voltages, high hydraulic pressure in discharging chamber, therefore, are discharging
It is highly difficult that discharging gap size is directly measured in cavity.But discharging gap is changed to 0 with high-field electrode shorted to earth method, then is phase
To easy；And be also relatively easy to from externally measured high-field electrode stroke.By the way that 3 discharging gap of high-field electrode is moved to
0, then by the mobile measurable stroke of high-field electrode 3, achieve the purpose that become 3 gap of high-field electrode into specified size.
Embodiment:
The present embodiment is used for the shock wave disintegration high temperature nuclear reactor spheric fuel element that high electric field pulse generates under radioactivity
Process；Specific steps are as follows: needing 60kV high-voltage DC power supply 12 through 7 grades of parallel high voltages in device of the present invention
Storage capacitor 14 is powered for it, controls discharge voltage and frequency, electrion air switch 16 by electrion air switch 16
Gap is determined as 18mm, and discharge mode is self breakdown electric discharge, discharge frequency about 1Hz, carries out fuel element and integrally disintegrates experiment.It is broken
Before solution element starts, elevating mechanism 2 is reduced, high-field electrode 3 pulls out discharging chamber 5；Remove the labyrinth sealing of discharging chamber 5
Structure 4 is added deionized water medium in discharging chamber 5, high temperature nuclear reactor spheric fuel element 6 is rolled into discharging chamber 5, high temperature nuclear reactor ball
Shape fuel element 6 is by the automatic clamping position of annulus fixture 8；The labyrinth seal structure 4 for installing discharging chamber 5, by elevating mechanism 2
It increases, high-field electrode 3 is pressed into discharging chamber 5 to high-field electrode shorted to earth；Again elevating mechanism 2 is reduced, determines high-field electrode 3
It is 3mm to the gap of high temperature nuclear reactor spheric fuel element 3；High-voltage DC power supply 12 is started, carries out high electric field pulse electric discharge, about
500 times；Period redefines high-field electrode 3 every 50 times to high temperature nuclear reactor spheric fuel element 6 or spheric fuel element fragment
Gap is 3mm；To after about 500 times, the stroke of high-field electrode 3 can not increase, and illustrate high temperature nuclear reactor spheric fuel element 6
It is completely broken；Stop electrion, and after a period of time, with discharging rod by the complete removal of high-voltage electricity residual charge；Opening is put
Clast is discharged and collects by electric 5 outlet valve of cavity.On inspection, spheric fuel element is completely broken, crushing efficiency 0.4g/
High electric field pulse cracks process and generates without dust, and graphite scrap still keeps original chemical composition and crystal form, without secondary pollution.
Claims (7)
1. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus, which contains bracket (1), lifting
Mechanism (2), high-field electrode (3), discharging chamber (5) and ground electrode (9)；The elevating mechanism (2) is installed on bracket (1)；
Discharging chamber (5) is fixed on lifting flattening mechanism；The high-field electrode (3) is mounted on cradle top and insulate with bracket；It is described
Ground electrode (9) is fixed on discharging chamber bottom；It is characterized by: annulus fixture (6) of the described device also containing top with blade；
The annulus fixture (6) is fixed on the ground electrode (9)；High temperature nuclear reactor spheric fuel element (6) is placed in the annulus folder
On the blade for having (8), the distance between high temperature nuclear reactor spheric fuel element (6) and the high-field electrode (3) are 1~8mm.
2. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus described in accordance with the claim 1,
It is characterized in that: described high-field electrode (3) discharge partThe shape divided is slab construction。
3. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus according to claim 1 or 2,
It is characterized by: the body shape of described ground electrode (9) discharge portion is the slab construction with sieve.
4. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus described in accordance with the claim 1,
It is characterized in that: using labyrinth seal structure between the discharging chamber (5) and the high-field electrode (3).
5. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus described in accordance with the claim 1,
Be characterized in that: the elevating mechanism includes hoistable platform, electric putter (11) and stroke measurment element (10), the stroke measurment
Element uses resistance scale；Hoistable platform is connect by electric putter (11) with bracket (1)；One end of electric putter is fixed on hoistable platform
On, the other end is fixed on bracket (1).
6. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus described in accordance with the claim 1,
It is characterized in that: being provided with the insulating concrete cylinder for preventing side wall from discharging between the discharging chamber (5) and the high-field electrode (3)
(7), the material of insulating concrete cylinder is polyurethane, polyether-ether-ketone or toughened zirconia ceramics.
7. a kind of device of the high electric field pulse disintegration spheric fuel element of fixture containing annulus described in accordance with the claim 1,
Be characterized in that: the insulation between the high-field electrode (3) and bracket (1) is using makrolon material, in makrolon material
It is coated with UV coating above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637823.XA CN109712730B (en) | 2018-12-29 | 2018-12-29 | High-voltage electric pulse disintegration spherical fuel element device containing ring clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637823.XA CN109712730B (en) | 2018-12-29 | 2018-12-29 | High-voltage electric pulse disintegration spherical fuel element device containing ring clamp |
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| Publication Number | Publication Date |
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| CN109712730A true CN109712730A (en) | 2019-05-03 |
| CN109712730B CN109712730B (en) | 2020-11-20 |
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| CN201811637823.XA Active CN109712730B (en) | 2018-12-29 | 2018-12-29 | High-voltage electric pulse disintegration spherical fuel element device containing ring clamp |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000284090A (en) * | 1999-03-31 | 2000-10-13 | Sumitomo Metal Mining Co Ltd | Method for reprocessing spent nuclear fuel |
| CN1885439A (en) * | 2006-05-26 | 2006-12-27 | 清华大学 | Stripping method for matrix graphite of simulated HTGR spent fuel element sphere |
| US20070158196A1 (en) * | 2006-01-11 | 2007-07-12 | Korea Hydro & Nuclear Power Co. Ltd | Preparation method of uranium metal and apparatus thereused |
| CN105161146A (en) * | 2015-08-11 | 2015-12-16 | 清华大学 | Bottom entering gas testing device for planar SOEC (solid oxide electrolyzer cell) stack |
| CN105185418A (en) * | 2015-09-08 | 2015-12-23 | 清华大学 | Full ceramic type covering fuel particle, preparation method of full ceramic type covering fuel particle and fuel element |
-
2018
- 2018-12-29 CN CN201811637823.XA patent/CN109712730B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000284090A (en) * | 1999-03-31 | 2000-10-13 | Sumitomo Metal Mining Co Ltd | Method for reprocessing spent nuclear fuel |
| US20070158196A1 (en) * | 2006-01-11 | 2007-07-12 | Korea Hydro & Nuclear Power Co. Ltd | Preparation method of uranium metal and apparatus thereused |
| CN1885439A (en) * | 2006-05-26 | 2006-12-27 | 清华大学 | Stripping method for matrix graphite of simulated HTGR spent fuel element sphere |
| CN105161146A (en) * | 2015-08-11 | 2015-12-16 | 清华大学 | Bottom entering gas testing device for planar SOEC (solid oxide electrolyzer cell) stack |
| CN105185418A (en) * | 2015-09-08 | 2015-12-23 | 清华大学 | Full ceramic type covering fuel particle, preparation method of full ceramic type covering fuel particle and fuel element |
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| CN109712730B (en) | 2020-11-20 |
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