JP2022523582A - 自己修復液体ペレット-被覆隙間熱伝達充填材 - Google Patents
自己修復液体ペレット-被覆隙間熱伝達充填材 Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 239000007788 liquid Substances 0.000 title description 8
- 239000000945 filler Substances 0.000 title description 2
- 239000000446 fuel Substances 0.000 claims abstract description 83
- 239000008188 pellet Substances 0.000 claims abstract description 55
- 239000011344 liquid material Substances 0.000 claims abstract description 36
- 239000003758 nuclear fuel Substances 0.000 claims abstract description 22
- 238000005253 cladding Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 18
- 239000001307 helium Substances 0.000 claims abstract description 11
- 229910052734 helium Inorganic materials 0.000 claims abstract description 11
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000009835 boiling Methods 0.000 claims abstract description 10
- 239000011241 protective layer Substances 0.000 claims abstract description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 37
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 229910045601 alloy Inorganic materials 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 17
- 239000011133 lead Substances 0.000 claims description 16
- 239000011135 tin Substances 0.000 claims description 15
- 229910052718 tin Inorganic materials 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 8
- 239000006023 eutectic alloy Substances 0.000 claims description 8
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- 229910020830 Sn-Bi Inorganic materials 0.000 claims description 7
- 229910018728 Sn—Bi Inorganic materials 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910020994 Sn-Zn Inorganic materials 0.000 claims description 3
- 229910009069 Sn—Zn Inorganic materials 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000009736 wetting Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 description 15
- MVXWAZXVYXTENN-UHFFFAOYSA-N azanylidyneuranium Chemical compound [U]#N MVXWAZXVYXTENN-UHFFFAOYSA-N 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 230000004992 fission Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 229910052770 Uranium Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 5
- 229910001093 Zr alloy Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- -1 bismuth metals Chemical class 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- UTDLAEPMVCFGRJ-UHFFFAOYSA-N plutonium dihydrate Chemical compound O.O.[Pu] UTDLAEPMVCFGRJ-UHFFFAOYSA-N 0.000 description 1
- FLDALJIYKQCYHH-UHFFFAOYSA-N plutonium(IV) oxide Inorganic materials [O-2].[O-2].[Pu+4] FLDALJIYKQCYHH-UHFFFAOYSA-N 0.000 description 1
- 230000008263 repair mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 description 1
- JFALSRSLKYAFGM-OIOBTWANSA-N uranium-235 Chemical compound [235U] JFALSRSLKYAFGM-OIOBTWANSA-N 0.000 description 1
Images
Classifications
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- 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
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/16—Details of the construction within the casing
- G21C3/18—Internal spacers or other non-active material within the casing, e.g. compensating for expansion of fuel rods or for compensating excess reactivity
-
- 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
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/06—Casings; Jackets
- G21C3/07—Casings; Jackets characterised by their material, e.g. alloys
-
- 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
- G21C3/02—Fuel elements
- G21C3/04—Constructional details
- G21C3/16—Details of the construction within the casing
- G21C3/20—Details of the construction within the casing with coating on fuel or on inside of casing; with non-active interlayer between casing and active material with multiple casings or multiple active layers
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Metallurgy (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Dental Preparations (AREA)
Abstract
Description
本発明は、エネルギー省により与えられた契約番号DE-NE0008824に基づく政府支援によりなされた。米国政府は、本発明に一定の権利を有する。
本出願は、2019年3月7日に出願された米国仮特許出願第62/814,943号の優先権を主張する。その内容は、参照により本明細書に組み込まれる。
1.運転中に400℃未満の融点。
2.過渡変化や設計基準を超える事故の場合の棒の内部圧力の上昇を回避するために、1600℃以上の沸点。
3.SiC被覆に自己修復微小クラック栓を形成することができる。
4.燃料の周囲の凝固により、核分裂生成物の放出だけでなく、U3Si2やUNを水および蒸気の腐蝕から保護することができる。
5.ある態様では、冷却材温度で凝固することができる。溶融温度が一般的な冷却材温度(~315°C)よりもわずかに高いため、液体金属または液体合金は、冷却材に接触するとSiCクラックを充填して凝固することができる。
6.液体充填材料は、燃料ペレットと被覆の両方を濡らし、それがクラック18に浸入する。
1.隙間内の熱伝導率の増加、
2.核分裂生成物がペレット内に蓄積することによるペレット-被覆の機械的な接触がないことを保証するために使用することができる広い隙間(例えば、最大で0.1mm)を可能にし、一方で、燃料ペレットの熱膨張を低下させてUO2燃料がSiC系被覆内で働くことができるようにする、
3.燃料温度が低いため核分裂ガスの放出の減少、
4.U3Si2やUNの燃料を水蒸気から保護し、それらをそのまま軽水炉の用途に利用できるようにする、
5.SiC被覆、Crで被覆されたZr合金やZr合金の被覆における微小クラックを充填し、水と反応させてクラックに不溶性栓を形成することで、SiC、Crで被覆されたZr合金やZr合金の被覆における漏洩を軽減する。
Claims (8)
- 被覆管と、
前記被覆管内に積み重ねられた複数の燃料ペレットと、
前記燃料ペレットと前記被覆管との間の隙間を充填する液体材料であって、前記液体材料は、ヘリウムの熱伝導率よりも高い熱伝導率、約400℃よりも低い融点、および、1600℃よりも高い沸点を有し、前記被覆にクラックが存在する場合はそのクラックに浸入するのに十分に、かつ、前記ペレットを覆う保護層を形成するのに十分に、前記被覆および前記燃料ペレットの両方を濡らすことができる前記液体材料と、を備える核燃料棒。 - 前記液体材料は、鉛系合金および錫系合金、ならびに錫、亜鉛、鉛、およびビスマスの金属からなる群から選択される、請求項1に記載の核燃料棒。
- 前記核燃料棒は、軽水炉において使用される、請求項1に記載の核燃料棒。
- 前記被覆管は、炭化ケイ素複合材料被覆であり、前記燃料は、UO2、UV、U3Si2、およびそれらの組み合わせからなる群から選択される、請求項1に記載の核燃料棒。
- 前記核燃料棒は、沸騰水型原子炉において使用され、前記液体材料は、鉛系合金である、請求項1に記載の核燃料棒。
- 前記鉛系合金は、Pb-Sn-Bi系およびPb-Bi系からなる群から選択される、請求項5に記載の核燃料棒。
- 前記液体材料は、Pb-Sn-Bi系、Pb-Bi系、Li-Beフッ化物、および、残留Snを有する10~18原子%のZnを含む共晶合金からなる群から選択される金属合金である、請求項1に記載の核燃料棒。
- 前記錫系合金は、Sn-ZnまたはSnからなる群から選択される、請求項1に記載の核燃料棒。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US201962814943P | 2019-03-07 | 2019-03-07 | |
US62/814,943 | 2019-03-07 | ||
PCT/US2020/021154 WO2020185502A2 (en) | 2019-03-07 | 2020-03-05 | Self-healing liquid pellet-cladding gap heat transfer filler |
Publications (1)
Publication Number | Publication Date |
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JP2022523582A true JP2022523582A (ja) | 2022-04-25 |
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JP2021552972A Pending JP2022523582A (ja) | 2019-03-07 | 2020-03-05 | 自己修復液体ペレット-被覆隙間熱伝達充填材 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220084694A1 (ja) |
EP (1) | EP3935649A2 (ja) |
JP (1) | JP2022523582A (ja) |
KR (1) | KR20210137088A (ja) |
TW (1) | TWI795634B (ja) |
WO (1) | WO2020185502A2 (ja) |
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US20220130558A1 (en) * | 2020-10-23 | 2022-04-28 | General Atomics | Molten metal-filled silicon carbide fuel cladding tube and uniform distribution fabrication method |
CN112951455B (zh) * | 2021-02-25 | 2023-03-03 | 南华大学 | 一种基于石墨烯气溶胶的芯块-包壳间间隙传热改善方法 |
CN113436757B (zh) * | 2021-07-19 | 2023-01-17 | 西安交通大学 | 一种具有均温结构的模块化固态反应堆堆芯 |
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2020
- 2020-03-05 JP JP2021552972A patent/JP2022523582A/ja active Pending
- 2020-03-05 US US17/593,037 patent/US20220084694A1/en active Pending
- 2020-03-05 EP EP20750788.0A patent/EP3935649A2/en active Pending
- 2020-03-05 WO PCT/US2020/021154 patent/WO2020185502A2/en unknown
- 2020-03-05 KR KR1020217031650A patent/KR20210137088A/ko unknown
- 2020-03-06 TW TW109107448A patent/TWI795634B/zh active
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JP2014232099A (ja) * | 2013-05-01 | 2014-12-11 | 竹田 眞司 | 安全性が高い原子力発電と安全性が高い高速増殖炉及び放射性廃棄物処理と放射能汚染物質の除去方法、 |
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US20220084694A1 (en) | 2022-03-17 |
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