JPH0825016B2 - Fuel rod assembly device - Google Patents
Fuel rod assembly deviceInfo
- Publication number
- JPH0825016B2 JPH0825016B2 JP1091253A JP9125389A JPH0825016B2 JP H0825016 B2 JPH0825016 B2 JP H0825016B2 JP 1091253 A JP1091253 A JP 1091253A JP 9125389 A JP9125389 A JP 9125389A JP H0825016 B2 JPH0825016 B2 JP H0825016B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- end plug
- welding
- cladding tube
- press
- 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 14
- 238000003466 welding Methods 0.000 claims description 49
- 238000005253 cladding Methods 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 31
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 239000011261 inert gas Substances 0.000 claims description 16
- 239000003566 sealing material Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 239000008188 pellet Substances 0.000 claims description 8
- 239000003758 nuclear fuel Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 19
- 239000001307 helium Substances 0.000 description 12
- 229910052734 helium Inorganic materials 0.000 description 12
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 11
- 238000012856 packing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 150000002371 helium Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 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
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 この発明は、核燃料物質が充填される燃料棒の組立装
置に関するものである。TECHNICAL FIELD The present invention relates to an assembly device for a fuel rod filled with a nuclear fuel material.
「従来の技術」 一般に、燃料棒は、被覆管と、該被覆管内に充填され
る核燃料物質としてのペレットと、該被覆管内に収納さ
れてペレットを押えるスプリングと、該被覆管の両端部
に設けられて該被覆管を密閉する一対の端栓とを有し、
その内部に不活性ガスを封入することにより構成されて
なるものである。"Prior Art" In general, a fuel rod is provided with a cladding tube, pellets as a nuclear fuel material filled in the cladding tube, springs housed in the cladding tube to press the pellets, and both ends of the cladding tube. And a pair of end plugs for sealing the covering tube,
It is configured by enclosing an inert gas inside.
ところで、このような燃料棒を製造するに際しては、
従来、以下（１）〜（４）に示す工程を順次経るように
している。By the way, when manufacturing such a fuel rod,
Conventionally, the following steps (1) to (4) are sequentially performed.
つまり、 （１）被覆管にペレットとスプリングとを充填し、該被
覆管の両端に端栓をそれぞれ圧入する。なお、この被覆
管に圧入される端栓には、中心軸に沿って端栓連通孔が
設けられており、この端栓連通孔を通じて被覆管の内部
と外部とが連通状態になっている。That is, (1) the coating tube is filled with pellets and springs, and end plugs are pressed into both ends of the coating tube. An end plug communicating hole is provided along the central axis in the end plug press-fitted into the covering pipe, and the inside and the outside of the covering pipe are in communication with each other through the end plug communicating hole.
（２）前記被覆管と端栓とを溶接により固定する。(2) The cladding tube and the end plug are fixed by welding.
（３）前記端栓が溶接固定された被覆管をタンク内に収
納する。(3) The sheathed pipe to which the end plug is fixed by welding is housed in the tank.
（４）タンク内を一旦真空引きした後ヘリウムガスで置
換して、被覆管内に不活性ガスを充填し、このヘリウム
ガス雰囲気の下で、端栓に設けられた端栓連通孔を閉鎖
するための溶接を行う。(4) To evacuate the tank once and then replace it with helium gas, fill the cladding tube with an inert gas, and close the end plug communication hole provided in the end plug under this helium gas atmosphere. Welding.
「発明が解決しようとする課題」 ところで、上記のような燃料棒の製造方式によれば、
端栓の圧入、溶接、ヘリウムガス（不活性ガス）の封
入、端栓連通孔の閉鎖といった処理を個別に行うように
しており、これによって、作業に手間が掛かってその作
業時間が長くなり、また、個々に設けた処理装置により
装置全体が大型化するという不具合があった。"Problems to be Solved by the Invention" By the way, according to the above fuel rod manufacturing method,
Processes such as press-fitting of end plugs, welding, encapsulation of helium gas (inert gas), and closing of end plug communication holes are individually performed, which makes the work time-consuming and prolongs the work time. Further, there is a problem that the size of the entire apparatus increases due to the processing apparatus provided individually.
また、被覆管を不活性ガス雰囲気下に置くために、該
被覆管を一括してタンク内に収納するようにしており、
これによって、必然的にタンクの容量が大きくなって、
この点においても装置全体が大型化するという不具合が
あった。Further, in order to put the coating tube in an inert gas atmosphere, the coating tubes are collectively stored in the tank,
This inevitably increases the capacity of the tank,
In this respect as well, there is a problem that the entire apparatus becomes large.
この発明は、上記の事情に鑑みてなされたものであっ
て、装置全体を小型化して、その設置面積を小さくする
ことができ、かつ、真空引き、ヘリウムガス置換、端栓
の圧入、溶接といった工程を効率良く連続的に行うこと
ができるとともに、端栓に設けられた端栓連通孔自体を
不要なものとして燃料棒の構造を簡素化することができ
る燃料棒組立装置の提供を目的とする。The present invention has been made in view of the above circumstances, and downsizing the entire apparatus, it is possible to reduce the installation area, and vacuuming, helium gas replacement, press-fitting of end plugs, welding, etc. An object of the present invention is to provide a fuel rod assembling apparatus capable of efficiently performing a continuous process and simplifying the structure of the fuel rod by eliminating the end plug communication hole itself provided in the end plug. .
「課題を解決するための手段」 本発明による燃料棒組立装置は、核燃料ペレット及び
スプリングが充填された被覆管の各端部にそれぞれ端栓
を溶接固定する端栓固定装置を二組有してなり、各端栓
固定装置は、貫通して設けられていて被覆管の端部がそ
の一方の側から挿入される貫通孔と、この貫通孔に連通
するように設けられた連通孔とを有するチャンバと、チ
ャンバの貫通孔及び連通孔をそれぞれ外部から隔離する
シール材と、チャンバの貫通孔に挿入された被覆管を包
囲する前記シール材を被覆管に対して気密に圧縮及び圧
縮解除可能なシール材圧縮手段と、貫通孔の他方の側か
ら被覆管の端部に連結される端栓を圧入する圧入手段
と、この端栓を被覆管とともに該被覆管の中心軸を中心
として回転させる回転手段とを有する端栓圧入回転装置
と、チャンバの連通孔に対して挿脱される溶接トーチを
有して、被覆管に圧入された端栓を溶接により固定する
溶接装置と、貫通孔及び連通孔内を真空にした後に不活
性ガスを封入するガス封入装置とから構成され、二組の
チャンバを同時に真空にするようにしたことを特徴とす
るものである。"Means for Solving the Problems" A fuel rod assembly apparatus according to the present invention has two sets of end plug fixing devices for welding and fixing end plugs to respective ends of a cladding tube filled with a nuclear fuel pellet and a spring. Each end plug fixing device has a through hole that is provided so as to penetrate therethrough and the end portion of the covering tube is inserted from one side thereof, and a communication hole provided so as to communicate with this through hole. The chamber, the seal material for isolating the through hole and the communication hole of the chamber from the outside, and the seal material surrounding the coating tube inserted into the through hole of the chamber can be compressed and decompressed airtightly with respect to the coating tube. Sealing material compression means, press-fitting means for press-fitting an end plug connected to the end of the covering pipe from the other side of the through hole, and rotation for rotating the end plug together with the covering pipe about the central axis of the covering pipe. End plug press fitting with means A rotating device and a welding torch that has a welding torch that is inserted into and removed from the communication hole of the chamber to fix the end plug press-fitted into the cladding tube by welding, and after evacuating the through hole and the communication hole. It is characterized in that it is composed of a gas enclosing device for enclosing an inert gas, and that two sets of chambers are simultaneously evacuated.
「作用」 この発明によれば、被覆管の端部が貫通孔の一方の側
から挿入された状態で、該貫通孔の他方の側から、端栓
圧入装置により、被覆管の端部に連結される端栓を挿入
し、かつ、この端栓を被覆管とともに該被覆管の中心軸
を中心として回転させる。そして、この状態で、溶接装
置の溶接トーチが、チャンバの連通孔に対して挿入され
て、被覆管に圧入されて被覆管とともに一体に回転する
端栓を、被覆管に溶接する作業を行う。なお、この溶接
に際しては、シール材によりチャンバの貫通孔及び連通
孔を外部から隔離し、かつガス充填装置により、これら
貫通孔及び連通孔内に不活性ガスを封入しておくように
する。[Operation] According to the present invention, with the end portion of the cladding tube being inserted from one side of the through hole, the end portion of the cladding tube is connected to the end portion of the cladding tube from the other side of the through hole by the end plug press-fitting device. Is inserted, and the end plug is rotated together with the cladding tube about the central axis of the cladding tube. Then, in this state, the welding torch of the welding device is inserted into the communication hole of the chamber, and the end plug that is press-fitted into the covering pipe and rotates integrally with the covering pipe is welded to the covering pipe. At the time of this welding, the through hole and the communication hole of the chamber are isolated from the outside by a sealing material, and an inert gas is filled in the through hole and the communication hole by a gas filling device.
つまり、被覆管の各端部に配置された端栓固定装置に
よって、被覆管への端栓挿入、貫通孔及び連通孔への不
活性ガスを封入、不活性ガス下における端栓と被覆管と
の溶接作業を順次連続的に行うことができる。That is, the end plug fixing device arranged at each end of the covering pipe inserts the end plug into the covering pipe, seals the inert gas into the through hole and the communication hole, and removes the end plug and the covering pipe under the inert gas. The welding work can be sequentially and continuously performed.
「実施例」 本発明の一実施例を第１図及び第２図を参照して説明
する。[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 and 2.
これらの図において符号１・１で示すものは互いに間
隔をおいて配置されて、被覆管Ｍの各端部を端栓Ｎ・Ｎ
により閉塞するようにした端栓固定装置であり、これら
二組の端栓固定装置１・１によって本発明の燃料棒組立
装置が構成される。In these figures, those denoted by reference numeral 1.1 are arranged at intervals from each other, and each end of the cladding tube M is connected with an end plug N.N.
It is an end plug fixing device that is closed by means of these two sets of end plug fixing devices 1.1, and the fuel rod assembling device of the present invention is constituted.
前記端栓固定装置１・１は、コンベア等の搬送手段に
より送られた、ペレット及びスプリングが充填されてな
る被覆管Ｍを上下より支持する上押え2A・2A及び下押え
2B・2Bを有する押えブロック２・２と、水平に形成され
た貫通孔３・３に、前記被覆管Ｍの端部がそれぞれ挿入
されるチャンバ４・４と、このチャンバ４・４内を真空
引きする真空装置５・５（ガス封入装置）と、真空にし
たチャンバ４・４内にヘリウムガスを充填するヘリウム
ガス充填装置６・６（ガス封入装置）と、チャンバ４・
４内に配置された被覆管Ｍに端栓Ｎを圧入する端栓圧入
装置７・７（端栓圧入回転装置）と、圧入された端栓Ｎ
と被覆管Ｍとを溶接により固定する溶接装置８・８とか
らそれぞれ構成されたものである。The end plug fixing devices 1.1 are upper and lower pressers 2A, 2A and lower pressers for vertically supporting a covering pipe M filled with pellets and springs, which is sent by a conveying means such as a conveyor.
A pressing block 2.2 having 2B / 2B, a chamber 4.4 into which the end of the coating tube M is inserted into a horizontally formed through hole 3.3, and a vacuum inside the chamber 4.4. A vacuum device 5.5 (gas filling device) for drawing, a helium gas filling device 6.6 (gas filling device) for filling the evacuated chambers 4 and 4 with helium gas, and a chamber 4.
End plug press-fitting device 7, 7 (end plug press-fitting rotating device) for press-fitting the end plug N into the covering pipe M arranged in 4, and the press-fitted end plug N
And a welding device 8 for fixing the covering pipe M by welding.
前記チャンバ４を中心とした端栓固定装置１の概略構
成を第２図を参照して説明する。A schematic configuration of the end plug fixing device 1 centering on the chamber 4 will be described with reference to FIG.
前記チャンバ４は、その貫通孔３の一方側3A（矢印Ａ
側）から被覆管Ｍが挿入され、かつ、同貫通孔３の他方
側3B（矢印Ｂ側）から端栓Ｎが挿入されるようになって
おり（後述する端栓圧入装置７による）、また、このチ
ャンバ４の上部には、溶接装置８が挿入される連通孔９
が貫通孔３と連通した状態であり、かつ直交した状態に
設けられている。また、このチャンバ４は、それ自体が
矢印Ａ−Ｂ方向に移動自在に設けられたものであり、前
記貫通孔３内に被覆管Ｍを挿入する際には、該チャンバ
４自体が矢印Ａ方向に移動するようになっている。The chamber 4 has a through hole 3 on one side 3A (arrow A).
The coating pipe M is inserted from the side) and the end plug N is inserted from the other side 3B (arrow B side) of the through hole 3 (by the end plug press-fitting device 7 described later). , A communication hole 9 into which the welding device 8 is inserted, at the upper part of the chamber 4.
Are in communication with the through-holes 3 and are provided orthogonally to each other. The chamber 4 itself is provided so as to be movable in the direction of arrow A-B, and when the coating pipe M is inserted into the through hole 3, the chamber 4 itself moves in the direction of arrow A. To move to.
また、前記貫通孔３における被覆管Ｍ挿入側（矢印Ａ
側）入口、前記貫通孔３における端栓Ｎ挿入側（矢印Ｂ
側）入口、前記連通孔９の入口には、被覆管Ｍ、端栓圧
入装置７、溶接装置８に密着されて、貫通孔３及び連通
孔９内を密閉状態するためのＯリング4A〜4C（シール
材）がそれぞれ設けられ、更に、Ｏリング4Aの外側には
Ｖパッキン4D（シール材）が設けられている。In addition, the cladding tube M insertion side of the through hole 3 (arrow A
Side) inlet, the end plug N insertion side in the through hole 3 (arrow B
Side) inlet, the inlet of the communication hole 9, the O-rings 4A to 4C which are in close contact with the coating pipe M, the end plug press-fitting device 7, and the welding device 8 to seal the inside of the through hole 3 and the communication hole 9. (Seal material) is provided respectively, and V packing 4D (seal material) is provided outside the O-ring 4A.
また、前記貫通孔３における被覆管Ｍ挿入側（矢印Ａ
側）入口近傍には、気密用Ｖパッキン圧縮治具10が配置
されており、この気密用Ｖパッキン圧縮治具10（シール
材圧縮手段）によって、前記Ｖパッキン4Dを矢印Ｂ方向
に押圧して圧縮変形させ、貫通孔３の内壁と被覆管Ｍの
外壁とをＯリング4AとともにＶパッキン4Dを介して密着
させるものである。In addition, the cladding tube M insertion side of the through hole 3 (arrow A
An airtight V-packing compression jig 10 is disposed near the inlet, and the V-packing 4D is pressed in the direction of arrow B by this air-tight V-packing compression jig 10 (sealing material compression means). The inner wall of the through hole 3 and the outer wall of the cladding M are brought into close contact with the O-ring 4A via the V packing 4D by compressive deformation.
前記端栓圧入装置７は、その先端に端栓Ｎが支持され
るロッド11を矢印Ａ−Ｂ方向に移動させて、端栓Ｎを被
覆管Ｍに対して矢印Ｂ側から挿入するプラグ圧入シリン
ダ12（圧入手段）と、前記ロッド11を回転させるサーボ
モータ13と、前記ロッド11とサーボモータ13との間に設
けられ、前記ロッド11の回転速度を定めるギア14とから
構成されたものであって、前記端栓Ｎが被覆管Ｍに挿入
された状態で、前記ロッド11に形成された段部11AがＯ
リング4Bに当接して、前記チャンバ４の貫通孔３内を密
閉するようになっている。尚、サーモモータ13及びギア
14は回転手段を構成する。The end plug press-fitting device 7 is a plug press-fit cylinder that inserts the end plug N into the covering pipe M from the arrow B side by moving a rod 11 having an end plug N supported on the rod 11 in the direction of arrow AB. 12 (press-fitting means), a servo motor 13 that rotates the rod 11, and a gear 14 that is provided between the rod 11 and the servo motor 13 and determines the rotation speed of the rod 11. Then, with the end plug N inserted in the cladding tube M, the stepped portion 11A formed on the rod 11 becomes O.
It abuts on the ring 4B to seal the inside of the through hole 3 of the chamber 4. The thermomotor 13 and the gear
Reference numeral 14 constitutes a rotating means.
また、前記端栓圧入装置７の側部には、端栓Ｎの供給
装置15が配置されている。この供給装置15は、第１図に
示すように端栓Ｎが複数配置された端栓ホルダ16と、矢
印Ａ−Ｂ方向及び矢印Ｃ−Ｄ方向に移動するように設け
られて、前記端栓ホルダ16に配置された端栓Ｎをロッド
11の近傍にまで搬送する端栓供給シリンダ17とから構成
されている。Further, a supply device 15 for the end plug N is arranged on the side of the end plug press-fitting device 7. As shown in FIG. 1, this supply device 15 is provided with an end plug holder 16 in which a plurality of end plugs N are arranged, and is provided so as to move in the directions of arrows AB and CD, and the end plugs are provided. End plug N placed in holder 16 is rod
It is composed of an end plug supply cylinder 17 that conveys it to the vicinity of 11.
前記溶接装置８は、下端部にタングステン電極18が設
けられた溶接トーチ19と、この溶接トーチ19をガイドす
るトーチガイド20と、前記溶接トーチ19をトーチガイド
20とともに昇降させる昇降機構21（第１図参照）とから
構成されたものであって、前記昇降機構21によって溶接
トーチ19が下降した場合には、この溶接トーチ19が、連
通孔９を経由して貫通孔３上部にまで挿入されて、端栓
Ｎを被覆管Ｍに溶接するとともに、前記トーチガイド20
の下部テーパ面20AをＯリング4Cに密着させて、貫通孔
３内を気密状態にするようになっている。The welding device 8 includes a welding torch 19 provided with a tungsten electrode 18 at a lower end thereof, a torch guide 20 for guiding the welding torch 19, and a torch guide for the welding torch 19.
When the welding torch 19 is lowered by the elevating mechanism 21, the welding torch 19 passes through the communication hole 9 and is made up and down together with the elevating mechanism 21 (see FIG. 1). Is inserted into the upper part of the through hole 3 to weld the end plug N to the covering pipe M and torch guide 20.
The lower taper surface 20A is closely attached to the O-ring 4C so that the inside of the through hole 3 is made airtight.
なお、前記第２図に符号22で示すものは、チャンバ４
内に挿入された被覆管Ｍを回転自在に支持する回転ロー
ラである。The reference numeral 22 in FIG. 2 indicates the chamber 4
It is a rotating roller that rotatably supports the coated tube M inserted therein.
次に、上記のようにそれぞれ構成された端栓固定装置
１・１による燃料棒組立工程を順番に説明する。Next, a fuel rod assembling process using the end plug fixing devices 1.1 constructed as described above will be sequentially described.
なお、この燃料棒組立工程では、両方の端栓固定装置
１・１により被覆管Ｍの両端に端栓Ｎを同時に溶接固定
する作業を行うものとする。In this fuel rod assembling process, the end plugs N are simultaneously welded and fixed to both ends of the cladding pipe M by both end plug fixing devices 1.1.
（１）押えブロック２によりペレット及びスプリングが
充填された被覆管Ｍを固定状態に挾持する。(1) The cover tube M filled with pellets and springs is held in a fixed state by the holding block 2.
（２）チャンバ４を矢印Ａ方向に移動させて、チャンバ
４における貫通孔３の矢印Ａ方向側から前記被覆管Ｍを
挿入し、更に、気密用パッキン圧縮治具10によってＶパ
ッキン4Dを圧縮させて、Ｖパッキン4D（及びＯリング4
A）を介して該被覆管Ｍをチャンバ４に密着させ、貫通
孔３の被覆管Ｍ挿入側を密閉する。(2) The chamber 4 is moved in the direction of arrow A, the covering pipe M is inserted from the side of the through hole 3 in the chamber 4 in the direction of arrow A, and the V packing 4D is further compressed by the airtight packing compression jig 10. V packing 4D (and O ring 4
The covering pipe M is brought into close contact with the chamber 4 via A), and the side of the through hole 3 where the covering pipe M is inserted is sealed.
（３）端栓圧入装置７のプラグ圧入シリンダ12により、
ロッド11に取り付けられた端栓Ｎを貫通孔３に矢印Ｂ側
から挿入する。このとき、前記ロッド11の段部11Aは、
チャンバ４のＯリング4Bに接触して貫通孔３の端栓Ｎ挿
入側を密閉する。(3) With the plug press-fitting cylinder 12 of the end plug press-fitting device 7,
The end plug N attached to the rod 11 is inserted into the through hole 3 from the arrow B side. At this time, the stepped portion 11A of the rod 11 is
The O-ring 4B of the chamber 4 is contacted to seal the end plug N insertion side of the through hole 3.
（４）溶接装置８を下降させて溶接トーチ19を貫通孔３
内に挿入し、該溶接トーチ19の先端を端栓Ｎと被覆管Ｍ
との溶接箇所に位置させる。なお、このとき、溶接装置
８のトーチガイド20の下部テーパ面20Aは、チャンバ４
のＯリング4Cに当接して、貫通孔３に通じる連通孔９の
上部を密閉する。(4) The welding device 8 is lowered to insert the welding torch 19 into the through hole 3
The welding torch 19 is inserted into the end plug N and the covering pipe M.
Position it at the welding point with. At this time, the lower taper surface 20A of the torch guide 20 of the welding device 8 is attached to the chamber 4
The upper part of the communication hole 9 communicating with the through hole 3 is sealed by abutting on the O ring 4C.
（５）真空装置５により貫通孔３、連通孔９及び被覆管
Ｍ内内を真空状態にする。(5) The inside of the through hole 3, the communication hole 9 and the inside of the coating tube M is evacuated by the vacuum device 5.
（６）ヘリウムガス充填装置６により、真空となった貫
通孔３及び連通孔９内にヘリウムガスを充填する。な
お、このとき、ヘリウムガスは被覆管Ｍ内にも充填され
る。(6) The helium gas filling device 6 fills the evacuated through hole 3 and communication hole 9 with helium gas. At this time, the helium gas is also filled in the coating pipe M.
（６′）貫通孔３に挿入されている端栓Ｎをプラグ圧入
シリンダ12により被覆管Ｍに嵌合する。(6 ') The end plug N inserted in the through hole 3 is fitted into the covering pipe M by the plug press-fitting cylinder 12.
（６″）押えブロック２による被覆管Ｍの挾持を解除
し、気密用パッキン圧縮治具10によるＶパッキン4Dの圧
縮を解除する。(6 ″) The holding of the cladding tube M by the pressing block 2 is released, and the compression of the V packing 4D by the airtight packing compression jig 10 is released.
（７）ヘリウム雰囲気の下で、サーボモータ13を動作さ
せて、圧入された端栓Ｎと一体に被覆管Ｍを低速で回転
させ、これと同時に、溶接装置８により端栓Ｎを被覆管
Ｍに溶接固定する。(7) Under the helium atmosphere, the servo motor 13 is operated to rotate the cover tube M integrally with the press-fitted end plug N at a low speed, and at the same time, the welding device 8 covers the end plug N. Weld fixed to.
（７′）溶接終了後、押えブロック２により被覆管Ｍを
挾持する。(7 ') After the welding is completed, the cover tube M is held by the holding block 2.
（８）溶接作業が終了した後、溶接装置８を上方に移動
させ、更に、プラグ圧入シリンダ12によりロッド11を矢
印Ｂ方向に移動させた後、チャンバ４を矢印Ｂ方向に移
動させて、該チャンバ４から端栓Ｎにより封鎖された被
覆管Ｍを抜き出す。(8) After the welding work is completed, the welding device 8 is moved upward, the rod 11 is further moved in the direction of arrow B by the plug press-fitting cylinder 12, and then the chamber 4 is moved in the direction of arrow B, The coating pipe M closed by the end plug N is pulled out from the chamber 4.
（９）押えブロック２よる挾持状態を解除して、端栓Ｎ
が溶接固定された被覆管Ｍを次の工程に送った後、ペレ
ット及びスプリングが充填されてなる新たな被覆管Ｍを
この押えブロック２に供給し、次の端栓固定作業に備え
る。(9) Release the clamped state by the presser block 2 and end plug N
After sending the welded and fixed coating pipe M to the next step, a new coating pipe M filled with pellets and springs is supplied to the pressing block 2 to prepare for the next end plug fixing work.
（10）上記（１）〜（９）の作業を繰り返すことによっ
て、多数の被覆管Ｍに端栓Ｎを連続的に固定する。(10) By repeating the above operations (1) to (9), the end plugs N are continuously fixed to a large number of coating pipes M.
以上説明したように本実施例によれば、これら２組の
端栓固定装置１・１によって、被覆管Ｍへの端栓Ｎ挿
入、貫通孔３及び連通孔９への不活性ガス封入、被覆管
Ｍ内への不活性ガス封入、端栓Ｎと被覆管Ｍとの溶接作
業を順次連続的に効率良く行うことができる。As described above, according to this embodiment, the end plug N is inserted into the covering pipe M, the through hole 3 and the communication hole 9 are filled with an inert gas, and the covering is performed by these two sets of end plug fixing devices 1.1. It is possible to successively and efficiently carry out the filling work of the inert gas in the pipe M and the welding work of the end plug N and the covering pipe M successively.
また、これら端栓固定装置１・１によって、被覆管Ｍ
内への不活性ガス封入、端栓Ｎと被覆管Ｍとの溶接作業
を同時に行うことができるので、従来のように、端栓Ｎ
に設けられた端栓連通孔自体を不要なものとして燃料棒
の構造を簡素化することができるという効果が得られ
る。In addition, with these end plug fixing devices 1.1, the covering pipe M
Since the inert gas can be charged into the inside and the welding work of the end plug N and the covering pipe M can be performed at the same time, as in the conventional case, the end plug N
It is possible to obtain an effect that the structure of the fuel rod can be simplified by eliminating the end plug communication hole itself provided in the.
また、これら端栓固定装置１・１は、チャンバ４を中
心として真空装置５、ヘリウムガス充填装置６、端栓圧
入装置７、溶接装置８などがそれぞれ集約的に配置され
た構成であり、また、被覆管Ｍと端栓Ｎとの溶接位置近
傍にのみ配置されるものであるので、結果として、装置
全体を小型化して、その設置面積を小さくすることがで
きるという効果が得られる。Further, these end plug fixing devices 1 and 1 each have a configuration in which a vacuum device 5, a helium gas filling device 6, an end plug press-fitting device 7, a welding device 8 and the like are collectively arranged around the chamber 4. Since it is arranged only in the vicinity of the welding position of the covering pipe M and the end plug N, as a result, it is possible to obtain an effect that the entire device can be downsized and the installation area can be reduced.
「発明の効果」 この発明は、被覆管の端部が貫通孔の一方の側から挿
入された状態で、該貫通孔の他方の側から、端栓圧入装
置により、被覆管の端部に連結される端栓を挿入し、か
つ、この端栓を被覆管とともに該被覆管の中心軸を中心
として回転させる。"Effects of the Invention" The present invention connects the end portion of the cladding tube to the end portion of the cladding tube from the other side of the through hole with the end plug press-fitting device in a state where the end portion of the cladding tube is inserted from one side of the through hole. Is inserted, and the end plug is rotated together with the cladding tube about the central axis of the cladding tube.
そして、この状態で、溶接装置の溶接トーチが、チャ
ンバの連通孔に対して挿入されて、被覆管に圧入されて
被覆管とともに一体に回転する端栓を、被覆管に溶接す
る作業を行う。なお、この溶接に際しては、シール材に
よりチャンバの貫通孔及び連通孔を外部から隔離し、か
つガス充填装置により、これら貫通孔及び連通孔内に不
活性ガスを封入しておくようにする。Then, in this state, the welding torch of the welding device is inserted into the communication hole of the chamber, and the end plug that is press-fitted into the covering pipe and rotates integrally with the covering pipe is welded to the covering pipe. At the time of this welding, the through hole and the communication hole of the chamber are isolated from the outside by a sealing material, and an inert gas is filled in the through hole and the communication hole by a gas filling device.
つまり、被覆管の各端部に配置された端栓固定装置に
よって、被覆管への端栓挿入、貫通孔及び連通孔への不
活性ガスを封入し、不活性ガス下における端栓と被覆管
との溶接作業を順次連続的に効率良く行うことができ
る。That is, the end plug fixing device arranged at each end of the covering pipe inserts the end plug into the covering pipe, seals the inert gas into the through hole and the communication hole, and removes the end plug and the covering pipe under the inert gas. It is possible to successively and efficiently perform welding work with and.
また、これら端栓固定装置によって、不活性ガス雰囲
気下で端栓と、被覆管との溶接作業を同時に行うことが
できるので、従来のように、端栓に設けられた端栓連通
孔自体を不要なものとして燃料棒の構造を簡素化するこ
とができいるという効果が得られる。しかも、被覆管と
端栓の溶接に際しては、被覆管の回転を許容すべくシー
ル材圧縮手段によるシール材の圧縮を解除することにな
り、両端側から同時に端栓を回転させることで、被覆管
が端栓と一体回転して確実に溶接作業を行うことができ
る。Further, since the end plugs and the covering pipe can be simultaneously welded under an inert gas atmosphere by these end plug fixing devices, the end plug communication holes themselves provided in the end plugs can be provided as in the conventional case. The effect that the structure of the fuel rod can be simplified as unnecessary is obtained. Moreover, when welding the cladding tube and the end plug, the compression of the sealing material by the sealing material compression means is released so as to allow the cladding tube to rotate, and by simultaneously rotating the end plugs from both ends, the cladding tube It is possible to perform welding work reliably by rotating together with the end plug.
また、各端栓固定装置は、チャンバを中心として端栓
圧入装置、溶接装置、ガス封入装置などが集約的に配置
された構造であり、また、被覆管と端栓とを溶接する位
置に配置すれば済むものであるので、結果として、装置
全体を小型化して、かつ、その設置面積を小さくするこ
とができるという効果が得られる。Further, each end plug fixing device has a structure in which an end plug press-fitting device, a welding device, a gas filling device, etc. are centrally arranged around the chamber, and the end pipe fixing device is arranged at a position where the cladding tube and the end plug are welded. This is all that is required, and as a result, there is an effect that the entire device can be downsized and its installation area can be reduced.
第１図及び第２図は本発明の一実施例を示す図であっ
て、第１図はその全体を示す斜視図、第２図は第１図の
一部を切欠いた斜視図である。 １……端栓圧入装置、３……貫通孔、４……チャンバ、
4A〜4C……Ｏリング（シール材）、4D……Ｖパッキン
（シール材）、５……真空装置（ガ封入装置）、６……
ヘリウムガス充填装置（ガス封入装置）、７……端栓圧
入装置、８……溶接装置、９……連通孔、18……溶接ト
ーチ。1 and 2 are views showing an embodiment of the present invention. FIG. 1 is a perspective view showing the whole thereof, and FIG. 2 is a perspective view in which a part of FIG. 1 is cut away. 1 ... end plug press-fitting device, 3 ... through hole, 4 ... chamber,
4A-4C …… O-ring (sealing material), 4D …… V packing (sealing material), 5 …… Vacuum device (gas filling device), 6 ……
Helium gas filling device (gas filling device), 7 ... end plug press-in device, 8 ... welding device, 9 ... communication hole, 18 ... welding torch.
Claims (1)
た被覆管の各端部にそれぞれ端栓を溶接固定する端栓固
定装置を二組有してなり、各端栓固定装置は、 貫通して設けられていて前記被覆管の端部がその一方の
側から挿入される貫通孔と、この貫通孔に連通するよう
に設けられた連通孔とを有するチャンバと、 このチャンバの貫通孔及び連通孔をそれぞれ外部から隔
離するシール材と、 前記チャンバの貫通孔に挿入された被覆管を包囲する前
記シール材を被覆管に対して気密に圧縮及び圧縮解除可
能なシール材圧縮手段と、 前記貫通孔の他方の側から被覆管の端部に連結される端
栓を圧入する圧入手段と、この端栓を被覆管とともに該
被覆管の中心軸を中心として回転させる回転手段とを有
する端栓圧入回転装置と、 前記チャンバの連通孔に対して挿脱される溶接トーチを
有して、被覆管に圧入された端栓を溶接により固定する
溶接装置と、 前記貫通孔及び連通孔内を真空にした後に不活性ガスを
封入するガス封入装置とから構成され、 前記二組のチャンバを同時に真空にするようにしたこと
を特徴とする燃料棒組立装置。1. A pair of end plug fixing devices for respectively fixing the end plugs by welding to each end of a cladding tube filled with nuclear fuel pellets and springs, each end plug fixing device being provided so as to penetrate therethrough. A chamber having a through hole into which the end portion of the cladding tube is inserted from one side thereof and a communication hole provided so as to communicate with the through hole; and a through hole and a communication hole of the chamber. A sealing material that is respectively isolated from the outside, a sealing material compression unit that can compress and decompress the sealing material that surrounds the coating tube inserted into the through hole of the chamber with respect to the coating tube, and the through hole. An end-plug press-fitting rotation device having a press-fitting means for press-fitting an end plug connected to the end of the cladding tube from the other side, and a rotating means for rotating the end plug together with the cladding tube about the central axis of the cladding tube. And the chamber A welding device that has a welding torch that is inserted into and removed from the through hole and fixes the end plug press-fitted into the cladding tube by welding; and an inert gas is filled after the through hole and the communication hole are evacuated. A fuel rod assembling apparatus, characterized in that the two sets of chambers are simultaneously evacuated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1091253A JPH0825016B2 (en) | 1989-04-11 | 1989-04-11 | Fuel rod assembly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1091253A JPH0825016B2 (en) | 1989-04-11 | 1989-04-11 | Fuel rod assembly device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02268969A JPH02268969A (en) | 1990-11-02 |
| JPH0825016B2 true JPH0825016B2 (en) | 1996-03-13 |
Family
ID=14021261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1091253A Expired - Lifetime JPH0825016B2 (en) | 1989-04-11 | 1989-04-11 | Fuel rod assembly device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0825016B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218271A (en) * | 1985-07-16 | 1987-01-27 | Matsushita Electric Ind Co Ltd | Method for driving ink jet recording head |
| JPS62227580A (en) * | 1986-03-28 | 1987-10-06 | Nuclear Fuel Ind Ltd | End plug welding equipment for spacer supporting rod |
-
1989
- 1989-04-11 JP JP1091253A patent/JPH0825016B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02268969A (en) | 1990-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3400614B2 (en) | Glove box | |
| US5505648A (en) | Contamination-free method of making arc tubes | |
| JPS593333A (en) | Hydraulic test method of pipe | |
| EP0109889B1 (en) | Process and appliance for welding nuclear fuel assembly grids | |
| JPH0825016B2 (en) | Fuel rod assembly device | |
| JP2732036B2 (en) | Equipment for manufacturing sealed sensors | |
| US4365409A (en) | Method and apparatus for filling sodium into sodium sulphur cells | |
| WO2003105158A1 (en) | Method and automatic installation for the airtight and secure confinement of used nuclear fuel | |
| FR2536897A1 (en) | APPARATUS FOR AUTOMATIC LOADING OF FUEL ASSEMBLIES FOR NUCLEAR REACTORS WITH TUNGSTEN AND GAS ARC WELDER | |
| CA1161908A (en) | Cavity for electron beam welding fo abutted elongated workpieces | |
| US7294035B2 (en) | Method and apparatus for welding shroud glass tube in arc tube for discharge lamp | |
| JPS63168278A (en) | Underwater welding equipment | |
| JPH01101498A (en) | Method and device for charging nuclear fuel pellet | |
| RU2065213C1 (en) | Method of and device for filling fuel elements with gas | |
| US3767283A (en) | Improvements in or relating to electron discharge devices | |
| KR890004530B1 (en) | Equipment for welding end caps to nuclear fuel rods | |
| JP3794253B2 (en) | Resistance welding equipment using process division | |
| CN222790842U (en) | Outer package welding device | |
| US2722963A (en) | Manufacture of insulated electric conductors | |
| JP2000215835A (en) | Vacuum treatment device and vacuum treatment method | |
| US3702212A (en) | Method and device for the manufacture of electron tubes | |
| US4371224A (en) | Single turret machine for fabricating high-intensity discharge arc tubes | |
| JP2807963B2 (en) | Fuel rod end plug sealing method | |
| JPS63196895A (en) | Reactor fuel rod end plug welding equipment | |
| JPH115167A (en) | Replacement device for welding electrode |