JPH0633436Y2 - Fuel assembly - Google Patents
Fuel assemblyInfo
- Publication number
- JPH0633436Y2 JPH0633436Y2 JP1987141574U JP14157487U JPH0633436Y2 JP H0633436 Y2 JPH0633436 Y2 JP H0633436Y2 JP 1987141574 U JP1987141574 U JP 1987141574U JP 14157487 U JP14157487 U JP 14157487U JP H0633436 Y2 JPH0633436 Y2 JP H0633436Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel assembly
- fuel rods
- rods
- fuel rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 75
- 238000000926 separation method Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 14
- 239000000463 material Substances 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Classifications
-
- 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
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 （産業上の利用分野） 本考案は、燃料集合体の輸送時に燃料棒と金属部材等が
接触して相互作用を発生するようなことを防止するため
の燃料棒離隔材を着脱自在に装着した燃料集合体に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention prevents the fuel rods from contacting with each other and metal members and causing interaction during transportation of the fuel assembly. The present invention relates to a fuel assembly in which a fuel rod separating member is detachably attached.
（従来の技術およびその問題点） 第13図は燃料集合体の縦断側面図であり、多数本の燃料
棒１が縦横等間隔に配列されており、その上下複数個所
に設けられているスペーサ２によって各燃料棒１の間隔
が保持されている。そして、このスペーサ２によって保
持された燃料棒がチャンネルボックス３に挿入保持され
ている。(Prior Art and Problems Thereof) FIG. 13 is a vertical cross-sectional side view of a fuel assembly, in which a large number of fuel rods 1 are arranged at equal intervals in the vertical and horizontal directions, and spacers 2 are provided above and below the spacer. The distance between the fuel rods 1 is maintained by. The fuel rod held by the spacer 2 is inserted and held in the channel box 3.
ところで、このような燃料集合体においては、その輸送
時等に振動による重力加速度Ｇ値の変動および揺動が生
じることにより輸送用ライナーの保持力を超える場合が
起り得る。そのため、わずかながら傷が発生する可能性
がある。特に最近では燃料棒に高耐食性被覆管が採用さ
れており、上述のようにわずかでも傷が発生すると、性
能低下等の要因にもよることが予想される。By the way, in such a fuel assembly, the holding force of the transportation liner may be exceeded due to fluctuations and fluctuations of the gravitational acceleration G value due to vibration during transportation and the like. Therefore, a slight scratch may occur. In particular, recently, highly corrosion-resistant cladding tubes have been adopted for fuel rods, and it is expected that even if a slight damage occurs as described above, it may be due to factors such as performance degradation.
そこで、従来燃料集合体の輸送に際しては、第14図に示
すような、両面に互いに平行な複数のリブ４を設けたプ
ラスチック製のライナー５を、第15図に示すように、各
スペーサ２間の各燃料棒１間に挿入し、各燃料棒の振動
等を防止することが行なわれている。Therefore, when transporting a conventional fuel assembly, a plastic liner 5 having a plurality of parallel ribs 4 on both sides, as shown in FIG. 14, is provided between the spacers 2 as shown in FIG. Is inserted between the fuel rods 1 to prevent vibration and the like of the fuel rods.
ところが、このようなものにおいては、燃料集合体へ挿
入すべきライナーの枚数が非常に多く、前記縦横等間隔
に保持されている燃料棒をその所定状態に保持するに
は、現場および現地サイトでの着脱作業に多くの手間と
時間を要するばかりでなく、ライナーの管理が非常に頻
雑になる等の問題がある。However, in such a case, the number of liners to be inserted into the fuel assembly is very large, and in order to keep the fuel rods held at equal intervals in the vertical and horizontal directions at the predetermined state, it is necessary to perform the work at the site and the site. Not only does it take a lot of time and effort to attach and detach the work, but there is also a problem that the liner management becomes very frequent.
本考案はこのような点に鑑み、現場での着脱作業が容易
であり、また燃料集合体輸送時の揺動、振動による燃料
棒の移動を確実に阻止し得るようにした燃料集合体を得
ることを目的とする。In view of the above points, the present invention provides a fuel assembly that can be easily attached and detached on site and that can reliably prevent movement of the fuel rod due to rocking and vibration during transportation of the fuel assembly. The purpose is to
（問題点を解決するための手段） 本考案は、多数本の燃料棒を縦横等間隔に支持した燃料
集合体において、上記燃料集合体の一側面及びそれに隣
接する左右両側面の少なくともその一部に接する帯板の
内面に、各燃料棒の間隙内に挿入され各燃料棒を離隔す
る互いに平行な複数の隔離板を突設した離隔材を、燃料
集合体の対向する両面側及びこれに隣接して上記両面と
直交する互いに対向する両面側にそれぞれ着脱自在に装
着し、輸送時に各燃料棒を上記隔離板によって縦及び横
方向に隔離するとともに、前記帯板によって四側面を支
持するようにしたことを特徴とする。(Means for Solving the Problems) The present invention relates to a fuel assembly in which a large number of fuel rods are supported at equal intervals in the vertical and horizontal directions, and at least a part of one side surface of the fuel assembly and adjacent left and right side surfaces thereof. On the inner surface of the strip in contact with the fuel cell, a separating member having a plurality of parallel separating plates that are inserted into the gaps between the fuel rods and separate the fuel rods from each other is provided. Then, the fuel rods are detachably mounted on both side surfaces which are orthogonal to each other and are opposed to each other so that each fuel rod is vertically and laterally separated by the separator plate during transportation and the four side surfaces are supported by the strip plate. It is characterized by having done.
しかして、互いに直交するように挿入された隔離板によ
って各燃料棒が格子状に保持されるとともに、離隔材の
帯板部によって燃料集合体の四側面が比較的広い範囲で
確実に支持、拘束される。Each fuel rod is held in a lattice by the separators inserted so as to be orthogonal to each other, and the four side faces of the fuel assembly are reliably supported and restrained in a relatively wide range by the strip plate portion of the separating member. To be done.
（実施例） 以下、第１図乃至第12図を参照して本考案の実施例につ
いて説明する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 12.
第１図は本考案における燃料棒離隔材10の斜視図であっ
て、その燃料棒隔離材10は弾性を有するナイロン、ポリ
エチレン、ウレタンまたはゴム等によって形成されてお
り、断面 字状の帯板11の内面には、燃料集合体の各燃料棒１間の
間隙内に挿入される離隔板12が互いに平行に且つ等間隔
に上記帯板11と一体的に突設せしめられている。上記帯
板11の平板部11aの長さは燃料集合体の一辺の長さに対
応し、その装着時には上記一辺を覆う長さとしてあり、
左右の両垂直辺部11bおよび離隔板12の高さは、上記一
辺の約半分としてある。FIG. 1 is a perspective view of a fuel rod separating member 10 according to the present invention. The fuel rod separating member 10 is made of elastic nylon, polyethylene, urethane or rubber and has a cross section. On the inner surface of the V-shaped strip plate 11, spacer plates 12 inserted into the gaps between the fuel rods 1 of the fuel assembly are integrally projected with the strip plate 11 in parallel and at equal intervals. ing. The length of the flat plate portion 11a of the strip plate 11 corresponds to the length of one side of the fuel assembly, and is a length that covers the one side when mounted.
The heights of the left and right vertical side portions 11b and the separating plate 12 are approximately half of the above-mentioned one side.
しかして、縦横等間隔に配列支持された燃料集合体の梱
包に際しては、第２図に示すように、２個の燃料棒離隔
材10をスペーサ２の近傍において上記集合体の互いに対
向する側面に装着して、各隔離板12を各燃料棒１間の間
隙内に挿入するとともに、両燃料棒離隔材10の帯板11を
燃料集合体の四側面に当接させ、その外周を囲繞する。
次に、上記装着された燃料棒離隔材10に隣接して、他の
２個の燃料棒離隔材10をその隔離板12がすでに挿入され
た隔離板12と直交する方向に挿入装着する。When packing a fuel assembly that is arrayed and supported at equal vertical and horizontal intervals, as shown in FIG. 2, two fuel rod spacers 10 are provided in the vicinity of the spacers 2 on the opposite side surfaces of the assembly. After mounting, the separators 12 are inserted into the gaps between the fuel rods 1, and the strip plates 11 of the fuel rod separating members 10 are brought into contact with the four side faces of the fuel assembly to surround the outer periphery thereof.
Next, the other two fuel rod spacers 10 are inserted and mounted adjacent to the mounted fuel rod spacers 10 in the direction orthogonal to the separators 12 into which the separators 12 have been inserted.
このようにして、各燃料棒間にはその縦横両方向から隔
離板12が挿入され、各燃料棒は格子状に正確に保持され
る。In this way, the separators 12 are inserted between the fuel rods from both the vertical and horizontal directions, and the fuel rods are accurately held in a lattice shape.
第３図乃至第５図は本考案の他の実施例を示す図であ
り、燃料棒離隔材10は、その中心部に前記隔離板12と直
交する方向に延びる切欠き13が形成され隔離板12の列が
２列設けられている。そこで、第５図に示すように、上
記燃料棒離隔材10を燃料集合体の互いに対向する面側か
らそれぞれ装着し、各隔離板12を各燃料棒間に挿入す
る。3 to 5 are views showing another embodiment of the present invention, in which the fuel rod separating member 10 is provided with a notch 13 extending in a direction orthogonal to the separator 12 at the center thereof. There are two rows of twelve. Therefore, as shown in FIG. 5, the fuel rod separating members 10 are mounted from the mutually opposing surface sides of the fuel assembly, and the separators 12 are inserted between the fuel rods.
一方、上記隔離板12と直交方向に挿入する燃料棒離隔材
14は、第４図に示すように平板状の帯板15の内面から複
数の隔離板12が突設されており、この燃料棒離隔材10に
形成された切欠き13部に、その隔離板12と直交方向に装
着する。On the other hand, a fuel rod separating member to be inserted in a direction orthogonal to the separator 12
As shown in FIG. 4, a plurality of separators 12 project from the inner surface of a flat strip 15 and the separators 14 are formed in the notches 13 formed in the fuel rod separating member 10. Install in the direction orthogonal to 12.
また、隔離板12の形状は燃料集合体への装着が容易なよ
うに、第６図に示すように先端をテーパ形状とするか、
第７図に示すように最外周燃料棒を支持、拘束でき、内
部燃料棒同志が接触しない程度の形状としてもよい。さ
らに、第８図および第９図に示すように、内部燃料棒１
の中に異径の支持管16等がある場合には厚さを薄くした
り、大径の場合には離隔板12の長さを短かくすればよ
い。また、第10図乃至第12図に示すように、燃料棒離隔
材10の形状を若干変更し、スペーサ２を被覆するように
してもよい。Further, the shape of the separator 12 is such that the tip is tapered as shown in FIG. 6 so that it can be easily attached to the fuel assembly.
As shown in FIG. 7, the outermost fuel rod may be supported and restrained, and the fuel rods may have a shape such that the inner fuel rods do not come into contact with each other. Further, as shown in FIGS. 8 and 9, the internal fuel rod 1
If there is a support tube 16 or the like having a different diameter, the thickness may be reduced, and if the diameter is large, the separation plate 12 may be shortened. Further, as shown in FIGS. 10 to 12, the shape of the fuel rod spacer 10 may be slightly modified to cover the spacer 2.
本考案は上述のように構成したので、装着個所を減少せ
しめることができるとともに、その着脱がきわめて容易
となり、作業の効率化を図ることができる。しかも、燃
料集合体の四側面を比較的広い範囲で確実に支持、拘束
するので輸送容器内に敷かれている緩衝材に対する受圧
面積が大きくなり、スペーサや燃料棒が同時に緩衝材に
埋設、接触し、燃料集合体の輸送時の振動によってスペ
ーサと燃料棒間に相対変位が誘発されるようなことがな
く、燃料棒の損傷の発生を確実に防止することができる
等の効果を奏する。Since the present invention is configured as described above, it is possible to reduce the number of places to be mounted, and to attach and detach it extremely easily, thereby improving work efficiency. Moreover, since the four sides of the fuel assembly are securely supported and restrained in a relatively wide range, the pressure receiving area for the cushioning material laid in the transportation container is increased, and the spacers and fuel rods are simultaneously embedded and contacted with the cushioning material. However, vibration during transportation of the fuel assembly does not induce relative displacement between the spacers and the fuel rods, and it is possible to reliably prevent damage to the fuel rods.
第１図は本考案の燃料棒離隔材の斜視図、第２図は上記
燃料棒離隔材の装着状態を示す斜視図、第３図および第
４図はそれぞれ燃料棒離隔材の他の実施例を示す斜視
図、第５図は第３図および第４図に示す燃料棒離隔材の
装着状態を示す斜視図、第６図乃至第９図はそれぞれ本
考案の燃料棒離隔材の他の変形例を示す図、第10図乃至
第12図はそれぞれ本考案のさらに他の実施例を示す図、
第13図は燃料集合体の縦断面図、第14図はライナーの斜
視図、第15図はその装着状態説明図である。 １……燃料棒、２……スペーサ、10,14……燃料棒離隔
材、11……帯板、12……隔離板。FIG. 1 is a perspective view of a fuel rod separating member of the present invention, FIG. 2 is a perspective view showing a mounting state of the fuel rod separating member, and FIGS. 3 and 4 are other embodiments of the fuel rod separating member. And FIG. 5 is a perspective view showing a mounted state of the fuel rod separating member shown in FIGS. 3 and 4, and FIGS. 6 to 9 are other modifications of the fuel rod separating member of the present invention. FIG. 10 shows an example, and FIGS. 10 to 12 show still another embodiment of the present invention.
FIG. 13 is a vertical cross-sectional view of the fuel assembly, FIG. 14 is a perspective view of the liner, and FIG. 15 is an explanatory view of its mounted state. 1 ... Fuel rod, 2 ... Spacer, 10, 14 ... Fuel rod separating material, 11 ... Strip plate, 12 ... Separator plate.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 杉之下 守 神奈川県横須賀市内川２丁目３番１号 日 本ニユクリア・フユエル株式会社内 (72)考案者 荒井 真司 神奈川県横須賀市内川２丁目３番１号 日 本ニユクリア・フユエル株式会社内 (72)考案者 工藤 敦弘 神奈川県横須賀市内川２丁目３番１号 日 本ニユクリア・フユエル株式会社内 (72)考案者 横井 裕 神奈川県横須賀市内川２丁目３番１号 日 本ニユクリア・フユエル株式会社内 (56)参考文献 特開 昭59−208495（ＪＰ，Ａ) 実開 昭61−161799（ＪＰ，Ｕ) 実開 昭57−153298（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Mori Suginoshita Mori 2-3-1, Yokosuka City, Kanagawa Prefecture Nihon Niruclear Fuyuru Co., Ltd. (72) Shinji Arai 2-chome, Yokosuka City, Kanagawa Prefecture No. 1 Nihon Clear Fuel Co., Ltd. (72) Creator Atsuhiro Kudo 2-3-1 River, Yokosuka City, Kanagawa Prefecture Nihon Clear Fuel Co., Ltd. (72) Yutaka Yokoi 2 Rivers Yokosuka City, Kanagawa Prefecture (3) Nihon Niclear Clear Fuel Co., Ltd. (56) References JP-A-59-208495 (JP, A) Actually opened 61-161799 (JP, U) Actually opened 57-153298 (JP, U) )
Claims (1)
料集合体において、上記燃料集合体の一側面及びそれに
隣接する左右両側面の少なくともその一部に接する帯板
の内面に、各燃料棒の間隙内に挿入され各燃料棒を離隔
する互いに平行な複数の隔離板を突設した離隔材を、燃
料集合体の対向する両面側及びこれに隣接して上記両面
と直交する互いに対向する両面側にそれぞれ着脱自在に
装着し、輸送時に各燃料棒を上記隔離板によって縦及び
横方向に隔離するとともに、前記帯板によって四側面を
支持するようにしたことを特徴とする燃料集合体。1. A fuel assembly in which a large number of fuel rods are supported at equal intervals in the vertical and horizontal directions. Separation members that are inserted into the gaps between the fuel rods and that project a plurality of parallel separators that separate the fuel rods from each other are provided. The fuel assembly is detachably mounted on both sides of the fuel assembly, and the fuel rods are vertically and laterally separated by the separators during transportation, and the four side surfaces are supported by the strips. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987141574U JPH0633436Y2 (en) | 1987-09-18 | 1987-09-18 | Fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987141574U JPH0633436Y2 (en) | 1987-09-18 | 1987-09-18 | Fuel assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446797U JPS6446797U (en) | 1989-03-22 |
| JPH0633436Y2 true JPH0633436Y2 (en) | 1994-08-31 |
Family
ID=31406758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987141574U Expired - Lifetime JPH0633436Y2 (en) | 1987-09-18 | 1987-09-18 | Fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633436Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS631278Y2 (en) * | 1981-03-21 | 1988-01-13 | ||
| JPS59208495A (en) * | 1983-05-13 | 1984-11-26 | 日本ニユクリア・フユエル株式会社 | Liner for transporting fuel assembly |
| JPS61161799U (en) * | 1985-03-29 | 1986-10-07 |
-
1987
- 1987-09-18 JP JP1987141574U patent/JPH0633436Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6446797U (en) | 1989-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4953658A (en) | Seismic isolator | |
| JPS623399B2 (en) | ||
| CN105780645B (en) | A kind of seamless type Long span multi-directional deflection comb plate, comb joint bridge extension joint | |
| CN1133488C (en) | Material Exchange Columns with Packing | |
| CA3122368C (en) | Reversible battery tray | |
| US12196239B2 (en) | Clamp having a lock and a release resisting key | |
| JPS616417A (en) | Method of fixing sheet material layer to stud and stop collar for said method | |
| JPH0740236Y2 (en) | Fuel assembly transport protection | |
| KR910006049A (en) | Elastic mounting for vehicle engine | |
| JP2750443B2 (en) | Shield segment | |
| JPH1151257A (en) | Pipe pillow installation structure | |
| JP2502719Y2 (en) | Focus tube cutting jig | |
| JPH0622237Y2 (en) | Fuel assembly spacer | |
| CN211636593U (en) | Pipette placement device | |
| JPH0646848Y2 (en) | CRT panel housing | |
| JPS631278Y2 (en) | ||
| CN222867639U (en) | Carrying mechanism | |
| JPS5923044Y2 (en) | Detachable adjustable stopper device for lining board | |
| JP2009528521A (en) | Light water reactor fuel assembly | |
| JP2531300Y2 (en) | Floor heating board | |
| JPS5917932Y2 (en) | Road anti-glare device | |
| JPS6446797U (en) | ||
| JPS61171057A (en) | Method of installing storage batteries | |
| JPH028678B2 (en) | ||
| JPS597369Y2 (en) | Pad for bridge girder support |