JPS58178287A - Fuel assembly - Google Patents
Fuel assemblyInfo
- Publication number
- JPS58178287A JPS58178287A JP57059664A JP5966482A JPS58178287A JP S58178287 A JPS58178287 A JP S58178287A JP 57059664 A JP57059664 A JP 57059664A JP 5966482 A JP5966482 A JP 5966482A JP S58178287 A JPS58178287 A JP S58178287A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel assembly
- tie plate
- plate
- tie
- 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.)
- Pending
Links
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
- Fuel-Injection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は沸騰水型原子炉の学科に係り、特に、上部及び
下部タイプレートを有する燃料集合体に関するものでめ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the field of boiling water nuclear reactors, and more particularly to fuel assemblies having upper and lower tie plates.
沸騰水型原子炉に使用される燃料集合体は第１図に示す
ようにａｈ本の上下端すが丸棒端栓になっている通常の
燃料１１４と燃料棒の上下端栓部６會ネジ切りしたタイ
ロッド７とこれら燃料棒を軸方向に弾性支持する膨張ス
プリング９、また水平方向間隔を一定に保持するスペー
サ３と、このスペーサ３の上下方向間隔を一定に保持す
るスペーサロッド５さらにタイロッド７によりネジ止支
持芒れることによりその閣崗を一足に保持する上部タイ
ブレート１および下部タイプレート２、さらにこれらの
外ｓｋａうチャンネルボックス８からなる構成になって
いる。As shown in Figure 1, a fuel assembly used in a boiling water reactor consists of ordinary fuel 114 with round rod end plugs at the upper and lower ends of ah, and 6 threaded screws at the upper and lower end plugs of the fuel rods. The cut tie rods 7, the expansion springs 9 that elastically support these fuel rods in the axial direction, the spacers 3 that keep the horizontal spacing constant, the spacer rods 5 that keep the vertical spacing of the spacers 3 constant, and the tie rods 7. The structure consists of an upper tie plate 1 and a lower tie plate 2, which hold the cabinet together by screw-fastening support awnings, and a channel box 8 that extends outside of these.
以上のｍ敗において、通常の？科偉４は、その上下趨栓
部９が上下タイプレートｌおよび２のボス穴に単に挿入
されていて軸方向には、膨張スプリングにより弾性支持
されて釣る。In the above m defeat, is it normal? The fishing gear 4 has its upper and lower end plugs 9 simply inserted into the boss holes of the upper and lower tie plates 1 and 2, and is elastically supported in the axial direction by an expansion spring for fishing.
一方タイロツド７は上部及び下部タイプレート２と燃料
４１４に結合するために、下部端栓はネジ切りして下部
タイプレート２のボス穴に切られているネジ穴で固矩さ
れ、上部端栓６は上部タイプレート１からの突出ｉｔネ
ジ止している。ま友チャンネルボックス８は上部タイプ
レート１にチャンネルファスナ１５により固寛されてい
る。On the other hand, in order to connect the tie rod 7 to the upper and lower tie plates 2 and the fuel 414, the lower end plug is threaded and solidified with a screw hole cut in the boss hole of the lower tie plate 2, and the upper end plug 6 It protrudes from the upper tie plate 1 and is screwed on. The friend channel box 8 is secured to the upper tie plate 1 by a channel fastener 15.
上記構成からなる燃料集合体ケ燃料取替作業時今に発生
する燃料集合体の洛下事故寺の、下部タイプレート２に
過大な荷重が作用する場合には、Ｆ部タイル−ト２の燃
料−支持部が変形するために、タイロッド７及び燃料棒
４の下８１５層栓が破損し燃料の１洩が生じる恐れかめ
る。If an excessive load is applied to the lower tie plate 2 of the fuel assembly having the above-mentioned structure during fuel replacement work, the fuel on the F section tie plate 2 should be - Due to the deformation of the support part, the tie rod 7 and the lower 815-layer plug of the fuel rod 4 may be damaged, causing a fuel leak.
本発明はく燃料集合体の路下時に燃料棒に過大な荷重が
作用しない構造１に提供するものである。The present invention provides a structure 1 in which excessive loads are not applied to fuel rods when the fuel assembly is on the road.
本発明は沸騰水型原子炉燃料の取替作業等の落下事故の
際の燃料棒の健全性向上を目的としたもので下部タイプ
レートに弾性体全役けることによう燃料果合体洛王事故
等時には、その衝撃エネルギーを弾性体で吸収し燃料棒
には過大な応力が作用しない構造に変更したものでおる
。The purpose of this invention is to improve the integrity of fuel rods in the event of a fall accident such as during boiling water reactor fuel replacement work, and the purpose of this invention is to use an elastic body in the lower tie plate to prevent fuel rods from collapsing into the Rakuo accident. At the same time, the structure has been changed so that the impact energy is absorbed by the elastic body and no excessive stress is applied to the fuel rods.
以下、本発明の実施例ｔ−第２図によシ説明する。An embodiment of the present invention will be described below with reference to FIG.
本実施例は、１ｇ２図に示すように、下部タイプレート
２のホモ穴板１０と下部板１１の中間部に１１面もしく
はＯｔｅ個の弾性体１２を設置したものである。また、
ボス穴＆１０は燃料１１［４の下部端栓が挿入されるよ
うに孔がめいておシ、タイロッド７が挿入される位置に
は、ネジ加工がされている。In this embodiment, as shown in Fig. 1g2, 11 elastic bodies 12 or Ote elastic bodies 12 are installed in the intermediate part between the homo-hole plate 10 and the lower plate 11 of the lower tie plate 2. Also,
The boss hole &10 is opened so that the lower end plug of the fuel 11 [4 can be inserted therein, and the position where the tie rod 7 is inserted is threaded.
ホモ穴板１０は、下部タイプレート２にだ円状のネジ上
部１３を設けることによりボルト１４によって下部タイ
ル−ト２とボス穴＆１０を支狩した＃ＩＩ造に変更した
ものでめる。The homo-hole plate 10 is of #II construction in which an elliptical screw upper part 13 is provided on the lower tie plate 2 and the lower tie plate 2 and boss hole &10 are supported by bolts 14.
尚、九円状のネジ止８１３に−設けたのは、燃料集合体
取扱時に下部タイプレート２を保持する役目と燃料集合
体落下時等における下部タイプレート２の上下方向の移
動を許容するためである。The nine circular screws 813 are provided to hold the lower tie plate 2 when handling the fuel assembly and to allow vertical movement of the lower tie plate 2 when the fuel assembly falls. It is.
上記構造であれば、万一、燃料来合体が落下しても燃料
１１４及び下部端棒に生じる責撃エネルギーｔ−下部タ
イブレート２とホモ穴板１０１ｉ５にｅｋ７た弾性体に
よって吸収し燃料１１４、下部端栓に過大な荷重が発生
せず燃料−４の破損を防ぐ効果が得られる。With the above structure, even if the fuel assembly falls, the impact energy t generated in the fuel 114 and the lower end rod will be absorbed by the elastic body placed in the lower tie plate 2 and the homo hole plate 101i5, and the fuel 114 and the lower An excessive load is not generated on the end plug, and damage to the fuel-4 can be prevented.
第１図は沸騰水型原子炉に使用される燃料集合体概略図
、第２図は本発明の下部タイプレートを用いた燃料集合
体上端部概略図である。
１・・・上部タイプレート、２・・・下部タイグレート
、３・・・スペーサ、４・・・燃料棒、５・・・スペー
サロッド、６・・・上部端栓、７・・・タイロッド、８
・・・チャンネルボックス、９・・・膨張スプリング、
１０・・・ホモ穴板、１１・・・下部板、１２・・・弾
性体、１３・・・だ円状のネジ止Ｎ、１４・・・ボルト
、１５・・・チャンネルファスナ。FIG. 1 is a schematic view of a fuel assembly used in a boiling water nuclear reactor, and FIG. 2 is a schematic view of the upper end of a fuel assembly using the lower tie plate of the present invention. DESCRIPTION OF SYMBOLS 1... Upper tie plate, 2... Lower tie plate, 3... Spacer, 4... Fuel rod, 5... Spacer rod, 6... Upper end plug, 7... Tie rod, 8
... Channel box, 9... Expansion spring,
DESCRIPTION OF SYMBOLS 10... Homo hole plate, 11... Lower plate, 12... Elastic body, 13... Oval screw fixing N, 14... Bolt, 15... Channel fastener.
Claims (1)
り沫狩する燃料集合体において、上部タイプレートに弾
性体を設けたこと１に％似とした燃料集合体。1.41 several fuels - A fuel assembly similar to 1 in which an elastic body is provided on the upper tie plate in a fuel assembly in which all upper and lower tie plates are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57059664A JPS58178287A (en) | 1982-04-12 | 1982-04-12 | Fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57059664A JPS58178287A (en) | 1982-04-12 | 1982-04-12 | Fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58178287A true JPS58178287A (en) | 1983-10-19 |
Family
ID=13119685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57059664A Pending JPS58178287A (en) | 1982-04-12 | 1982-04-12 | Fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58178287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007183289A (en) * | 2007-03-23 | 2007-07-19 | Matsushita Electric Ind Co Ltd | Underground buried instrument |
-
1982
- 1982-04-12 JP JP57059664A patent/JPS58178287A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007183289A (en) * | 2007-03-23 | 2007-07-19 | Matsushita Electric Ind Co Ltd | Underground buried instrument |
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