JPH03172796A - Guide for fuel rod insertion - Google Patents

Guide for fuel rod insertion

Info

Publication number
JPH03172796A
JPH03172796A JP1310518A JP31051889A JPH03172796A JP H03172796 A JPH03172796 A JP H03172796A JP 1310518 A JP1310518 A JP 1310518A JP 31051889 A JP31051889 A JP 31051889A JP H03172796 A JPH03172796 A JP H03172796A
Authority
JP
Japan
Prior art keywords
guide
fuel rod
fuel
spacer
holder
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
Application number
JP1310518A
Other languages
Japanese (ja)
Inventor
Kazuya Matsuno
松野 一也
Yasunori Nemoto
根本 靖範
Koichi Ono
耕一 大野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Power Reactor and Nuclear Fuel Development Corp
Original Assignee
Power Reactor and Nuclear Fuel Development Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Power Reactor and Nuclear Fuel Development Corp filed Critical Power Reactor and Nuclear Fuel Development Corp
Priority to JP1310518A priority Critical patent/JPH03172796A/en
Publication of JPH03172796A publication Critical patent/JPH03172796A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE:To easily attach and detach a guide holder and to prevent a fuel rod from breaking by forming the guide for fuel rod insertion of synthetic resin and forming a taper on the insertion side or both sides of its guide hole. CONSTITUTION:The guide 8 for insertion is formed of the synthetic resin and reduced in weight so as to facilitate the attachment to and detachment from the holder 9, and guide holes 16 which are as many as holding holes of a fuel rod spacer 3 are formed at the same positions. The insertion side or both sides of the holes 16 are tapered 17. Then spacers 3 and guides 8 are fixed to the spacer holder 2 and holder 9 and when a fuel rod 14 is fed 13, the fuel rod 14 is guided by the hole 16 of the guide 8 and inserted into the hole of the 1st spacer 3. At this time, the guide 8 is made of synthetic resin and the hole 16 is tapered 17, so the fuel rod is guided smoothly. After the fuel rod 14 is inserted into the spacer 3, the guide 8 is detached, and assembled into the fuel assembly and then moved, and then the next fuel assembly is manufactured, so the guide 8 is mounted on the holder 9 again.

Description

【発明の詳細な説明】 (産業上の利用分野 本発明は、原子炉施設の燃料集合体の組み立て装置に関
し、さらに詳しくは該燃料枠組み立て装置において燃料
棒を燃料棒スペーサに挿入する際に使用される挿入用ガ
イドに関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a fuel assembly assembly device for a nuclear reactor facility, and more particularly to a device used when inserting a fuel rod into a fuel rod spacer in the fuel assembly assembly device. Regarding the insertion guide.

(従来の技術) 原子炉施設の燃料集合体は、ステンレスまた1まニッケ
ル合金から成る燃料棒スペーサに形成された複数の保持
孔に燃料棒を挿入して、その両端を閉じ、燃料棒相互の
間隔を保つと同時に一体としている。
(Prior art) Fuel assemblies for nuclear reactor facilities are constructed by inserting fuel rods into a plurality of holding holes formed in a fuel rod spacer made of stainless steel or a nickel alloy, closing both ends of the fuel rods, and connecting the fuel rods to each other. Maintaining distance and at the same time being unified.

従来、燃料棒スペーサに燃料棒を挿入するには、集束装
置の上に間隔をおいて複数設けられたスペーサ保持具に
金属製の燃料棒スペーサを固定し、燃料棒供給装置から
燃料棒を押し出して燃料棒スペーサに挿入し、挿入後に
燃料棒の束の両端部にタイプレートをVC着して一体の
燃料集合体を製作していた。
Conventionally, in order to insert a fuel rod into a fuel rod spacer, a metal fuel rod spacer is fixed to a plurality of spacer holders provided at intervals above a focusing device, and the fuel rod is pushed out from a fuel rod feeding device. After insertion, tie plates were attached to both ends of the bundle of fuel rods to form an integrated fuel assembly.

しかしながら、この従来の挿入装置によると燃料棒が最
初の燃料棒スペーサの保持孔に挿入される前にその自重
により撓んでしまい、そのままでは燃料棒スペーサの保
持孔に挿入できなくなってしまう.このため、手で燃料
棒を支持して撓みを防止しながら挿入せざるをえア、そ
のために作業員の放射能被曝という危険が避けられない
ものであった。
However, with this conventional insertion device, the fuel rod bends due to its own weight before it is inserted into the holding hole of the first fuel rod spacer, and it cannot be inserted into the holding hole of the fuel rod spacer as it is. For this reason, the fuel rods had to be supported by hand to prevent bending while being inserted, which inevitably exposed workers to the risk of radiation exposure.

また、手作業であるため挿入位置がずれて金属製の燃料
棒スペーサに燃料棒の端部が衝突して燃料棒スペーサま
たは燃料棒自体が傷つき、燃料集合体に欠陥が生ずるお
それがあった。
Furthermore, since the insertion is done manually, there is a risk that the end of the fuel rod will collide with the metal fuel rod spacer due to the insertion position being misaligned, damaging the fuel rod spacer or the fuel rod itself, and causing a defect in the fuel assembly.

このような欠点を解決するため、前記スペーサ保持共の
前にガイド保持共を設け、燃料棒スペーサの保持孔と同
数かつ同位置にガイド孔の形成された金属製の挿入用ガ
イドを該ガイド保持共に固定した燃料棒の組み立てg、
置は公知である。(特公昭55−28039号参照)前
記公知の組み立て装置では、挿入用ガイドにより燃料枠
を案内して燃料棒スペーサに挿入するようにしているの
で、燃料棒の撓みを防止して簡単に燃料棒挿入作業が行
なわれるものとなっていた。
In order to solve this problem, a guide holder is provided in front of the spacer holder, and a metal insertion guide with guide holes formed in the same number and at the same position as the fuel rod spacer holding holes is used to hold the guide. assembly of fuel rods fixed together g;
The location is known. (Refer to Japanese Patent Publication No. 55-28039.) In the above-mentioned known assembly device, the fuel frame is guided by an insertion guide and inserted into the fuel rod spacer, so that the fuel rod can be easily assembled without bending. The insertion work was to be carried out.

(発明が解決しようとする?S題) ところで、挿入用ガイドは燃料棒挿入時の案内に用いる
ものであるから、燃料棒挿入終了後には速やかにこれを
取外し、燃料棒スペーサに保持された燃料棒の束の両端
にタイプレートを装着して、燃料集合体製作を完了し、
引き続いて直ぐに次の燃料集合体製作のための準備をし
なければならない。
(Problem S to be solved by the invention) By the way, since the insertion guide is used to guide the fuel rods when they are inserted, they should be removed immediately after the fuel rods have been inserted, and the fuel held in the fuel rod spacers should be removed. Attach tie plates to both ends of the bundle of rods to complete the fuel assembly fabrication.
Immediately thereafter, preparations must be made for the fabrication of the next fuel assembly.

ところが、上記の従来公知の挿入用ガイドはけ金IA!
!!であり、このため、重量がかさみ取付け・取外しの
作業性が悪くなるとり・う課題があった。
However, the above-mentioned conventionally known insertion guide bar IA!
! ! Therefore, there was a problem that the weight increased and the workability of mounting and dismounting became poor.

さらに、上記公知の挿入用ガイドは金属製であるため、
燃料棒と該金属製の挿入用ガイドとが衝突し、燃料棒が
破損するおそれがあった。
Furthermore, since the above-mentioned known insertion guide is made of metal,
There was a risk that the fuel rod would collide with the metal insertion guide and the fuel rod would be damaged.

また、燃料棒が金属製の挿入用ガイドを挿通している時
に金属同士の摩擦によって傷を受けるおそれがあった。
Furthermore, when the fuel rods are inserted through the metal insertion guides, there is a risk of damage due to friction between metals.

そこで本発明の目的は、挿入用ガイドをガイド保持共に
取付け・取外しする作業が容易であると同時に燃料棒の
破損を防止した燃料棒挿入用ガイドを提供することにあ
る。
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fuel rod insertion guide that facilitates the work of attaching and removing the insertion guide while holding the guide, and at the same time prevents damage to the fuel rods.

(?S、題を解決するための手段) 上記目的を達成するため、本発明では、燃料棒の挿入用
ガイドを合成of脂製としたものである。
(?S, Means for Solving the Problem) In order to achieve the above object, in the present invention, the fuel rod insertion guide is made of synthetic resin.

(実施例) 以下に、本発明の実施例を第1図ないし第4図を参照し
て説明する。
(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 4.

第3図を参照して、集束波r!11上にrrrJ隔をお
いて複数のスペーサ保持共2が設けられ、各スペーサ保
持共2に燃料棒スペーサ3が着脱自在に保持されるよう
になっている。すなわち、スペーサ保持共2はfIS4
図に示されているように、受体4にキャップ5が開閉自
在に取り付けられζ受体4とキヤ・ンプ5との間には開
放用スプリング6が介装されている。
Referring to FIG. 3, the focused wave r! A plurality of spacer holders 2 are provided on the fuel rod 11 at rrrJ intervals, and a fuel rod spacer 3 is detachably held in each spacer holder 2. In other words, spacer holding both 2 is fIS4
As shown in the figure, a cap 5 is attached to the receiver 4 so as to be openable and closable, and an opening spring 6 is interposed between the receiver 4 and the cap 5.

前記燃料棒スペーサ3は、ステンレス、ニッケル合金な
どからなり、燃料棒を保持するための保持孔7が複数形
成されている。
The fuel rod spacer 3 is made of stainless steel, nickel alloy, etc., and has a plurality of holding holes 7 for holding the fuel rods.

そして、最も燃料棒挿入側に近い側のスペーサ保持共2
の前には挿入用ガイド8を保持するためのガイド保持共
9が設けられている。このガイド保持共9は前記スペー
サ保持共2と同様な構造となっており、t54図に示さ
れているように、受体10にキャップ11が開閉自在に
支持され、受体10とキャップ11との間には開放用ス
プリング12が介装されている。挿入用ガイド8の構造
については後述する。
Then, hold the spacer on the side closest to the fuel rod insertion side.
A guide holder 9 for holding the insertion guide 8 is provided in front of the insertion guide 8. This guide holder 9 has the same structure as the spacer holder 2, and as shown in Fig. An opening spring 12 is interposed between them. The structure of the insertion guide 8 will be described later.

前記集束装置1の前には、第3図に示されているように
燃料棒供給装置13が配置され、燃料棒14をガイドす
るための固定VO−215が設けられている。
In front of the focusing device 1, as shown in FIG. 3, a fuel rod feeding device 13 is arranged, and a fixed VO-215 for guiding the fuel rods 14 is provided.

本実施例の挿入用ガイド8には、第4図と第1図に示さ
れているように、前記燃料棒スペーサ3の保持孔7と同
数かつ同位置の〃イド孔16が形成されており、ガイド
保持具9に対する取付け・取外し作業性を良好とするた
め合成1J(脂から形成され、これによって軽量化され
ている。
As shown in FIGS. 4 and 1, the insertion guide 8 of this embodiment has the same number and position of the id holes 16 as the holding holes 7 of the fuel rod spacer 3. In order to improve the workability of attaching and detaching the guide holder 9, it is made of synthetic 1J (oil), thereby reducing the weight.

また燃料棒14をスムーズに案内するために前記ガイド
孔16には第2図に示されているようにテーパ17が形
成されている。本実施例ではガイド孔の両端側にテーパ
が形成されているが、燃料棒挿入側だけに形成してもよ
い。
Further, in order to guide the fuel rod 14 smoothly, the guide hole 16 is formed with a taper 17 as shown in FIG. Although tapers are formed on both ends of the guide hole in this embodiment, they may be formed only on the fuel rod insertion side.

以上のように43威された実施例は、次のように作mす
る。
The embodiment described above is constructed as follows.

第1図ないし第4図を参照して、スペーサ保持具2とガ
イド保持共9とにそれぞれ燃料棒スペーサ3と挿入用ガ
イド8とを取り付けて固定し、燃料棒供給装置13から
給送された燃料棒14は挿入用ガイド8の〃イド孔16
により案内されて最初の燃料棒スペーサ3の保持孔7に
挿入され、順次後段の燃料棒スペーサ3に挿入される。
Referring to FIGS. 1 to 4, the fuel rod spacer 3 and the insertion guide 8 are attached and fixed to the spacer holder 2 and the guide holder 9, respectively, and the fuel rods are fed from the fuel rod supply device 13. The fuel rod 14 is inserted into the id hole 16 of the insertion guide 8.
It is guided by and inserted into the holding hole 7 of the first fuel rod spacer 3, and then sequentially inserted into the subsequent fuel rod spacer 3.

挿入用ガイド8は、合成樹脂から成形され、かつ〃イド
孔1Gにテーパ17が形J&されているので、案内がス
ムーズにいく。
The insertion guide 8 is molded from synthetic resin, and the guide hole 1G has a taper 17 shaped like J&, so that the guide can be guided smoothly.

燃料棒14を燃料棒スペーサ3に挿入した後、挿入用ガ
イド8をガイド保持共14から取り外し、図示しないタ
イプレートを燃料棒14の束の両端に装着し、組み立て
られた燃料集合体を移動させた後、次の燃料集合体製作
のため、挿入用がイド8を再びガイド保持共9に取り付
ける。燃料棒挿入用ガイド8が合成樹m製で軽量である
ので、この取付け・取外しの作業性が良好なものとなる
After inserting the fuel rods 14 into the fuel rod spacers 3, the insertion guide 8 is removed from the guide holder 14, tie plates (not shown) are attached to both ends of the bundle of fuel rods 14, and the assembled fuel assembly is moved. After that, the insertion guide 8 is reattached to the guide holder 9 for manufacturing the next fuel assembly. Since the fuel rod insertion guide 8 is made of synthetic wood and is lightweight, the workability of attachment and detachment is good.

(発明の効果) 本発明によれば、燃料棒を燃料棒スペーサに挿入する際
に案内用に用いる燃料棒1申入用ガイドを合成(Jf 
JJlt製で軽量のものとしたので、燃料集合体ごとの
ガイド保持共への取付けおよびガイド保持共からの取外
しの作業性が良好なものとなる。
(Effects of the Invention) According to the present invention, a fuel rod 1 application guide used for guiding when inserting a fuel rod into a fuel rod spacer is synthesized (Jf
Since it is made by JJlt and is lightweight, it is easy to attach and remove each fuel assembly from the guide holder.

また、挿入用ガイドが合成樹脂製であるため、燃料棒が
挿入用ガイドに衝突したとしても、燃料が傷ついたりあ
るいは破損したりすることがない。
Further, since the insertion guide is made of synthetic resin, even if the fuel rod collides with the insertion guide, the fuel will not be damaged or damaged.

さらに、合成樹脂はそれ自体が潤滑性を有しているので
、金属同士と違って挿入時に摩擦による傷つきや摩耗が
なく、かつ挿入作業もスムーズである。
Furthermore, since the synthetic resin itself has lubricating properties, unlike metals, there is no damage or wear due to friction during insertion, and the insertion process is also smooth.

さらにまた、燃料棒挿入用ガイドのガイド孔にテーパを
形成しであるから、燃料棒の案内がスムーズにいく。
Furthermore, since the guide hole of the fuel rod insertion guide is tapered, the fuel rod can be guided smoothly.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明に係る方法を実施するための挿入用ガ
イドの斜視図である。 第2図は、第1図の一部の断面図である。 第3図は、本発明に係る方法を実施するための装置類の
正面図である。 第4図は、13図と第5図に示すガイド保持共にガイド
を取り付けた状態を示す正面図である。 第1図 1:11立ベツト 2ニスペーサ保持共3:燃料棒スペ
ーサ 7:保持孔 8:挿入用ガイド 9:〃イド保持共 13:燃料棒供給装置 14:燃料棒 16:ガイド孔 17:テーパ
FIG. 1 is a perspective view of an insertion guide for carrying out the method according to the invention. FIG. 2 is a cross-sectional view of a portion of FIG. 1. FIG. 3 is a front view of equipment for carrying out the method according to the invention. FIG. 4 is a front view showing a state in which the guides are attached to both the guide holders shown in FIGS. 13 and 5. FIG. Figure 1: 11 vertical bed 2 Spacer holding 3: Fuel rod spacer 7: Holding hole 8: Insertion guide 9: Id holding 13: Fuel rod supply device 14: Fuel rod 16: Guide hole 17: Taper

Claims (2)

【特許請求の範囲】[Claims] (1)燃料棒スペーサの保持孔と同数かつ同位置のガイ
ド孔が形成された燃料棒挿入用ガイドにおいて、該燃料
棒挿入ガイドが合成樹脂から形成されて成ることを特徴
とする挿入用ガイド。
(1) A fuel rod insertion guide in which guide holes are formed in the same number and at the same positions as the holding holes of the fuel rod spacer, characterized in that the fuel rod insertion guide is made of synthetic resin.
(2)ガイド孔の挿入側にテーパが形成されて成ること
を特徴とする特許請求の範囲第1項記載の挿入用ガイド
(2) The insertion guide according to claim 1, wherein a taper is formed on the insertion side of the guide hole.
JP1310518A 1989-12-01 1989-12-01 Guide for fuel rod insertion Pending JPH03172796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1310518A JPH03172796A (en) 1989-12-01 1989-12-01 Guide for fuel rod insertion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1310518A JPH03172796A (en) 1989-12-01 1989-12-01 Guide for fuel rod insertion

Publications (1)

Publication Number Publication Date
JPH03172796A true JPH03172796A (en) 1991-07-26

Family

ID=18006197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1310518A Pending JPH03172796A (en) 1989-12-01 1989-12-01 Guide for fuel rod insertion

Country Status (1)

Country Link
JP (1) JPH03172796A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111997A (en) * 1983-10-28 1985-06-18 レアクトルブレンエレメント、ウニオン、ゲゼルシヤフト、ミツト、ベシユレンクテル、ハフツング Method of assembling nuclear reactor fuel aggregate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60111997A (en) * 1983-10-28 1985-06-18 レアクトルブレンエレメント、ウニオン、ゲゼルシヤフト、ミツト、ベシユレンクテル、ハフツング Method of assembling nuclear reactor fuel aggregate

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