JPS6047993A - Jet pump beam exchanger - Google Patents
Jet pump beam exchangerInfo
- Publication number
- JPS6047993A JPS6047993A JP58154896A JP15489683A JPS6047993A JP S6047993 A JPS6047993 A JP S6047993A JP 58154896 A JP58154896 A JP 58154896A JP 15489683 A JP15489683 A JP 15489683A JP S6047993 A JPS6047993 A JP S6047993A
- Authority
- JP
- Japan
- Prior art keywords
- jet pump
- retainer
- pump beam
- cutting
- bolt
- 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
- Fertilizing (AREA)
- Jet Pumps And Other Pumps (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】
〔発明の利用分野〕
本発明はジェットポンプビームの交換装置に係り、特に
ジェットポンプビーム。の脱落防止リテイナーを水中切
断機で切断後リテーナ−とジェットポンプビームを遠融
操作で交換するのに好適な装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a jet pump beam changing device, and more particularly to a jet pump beam. The present invention relates to a device suitable for exchanging the retainer and jet pump beam by a telefusion operation after cutting the drop-off prevention retainer using an underwater cutter.
従来のジェットポンプビーム交換装置としては特願昭５
６−９４３９４沸騰水型原子炉のジェットポンプの部品
交換方法および部品交換用装置があるが、ジェットポン
プビームの下部を掴み交換する方法であるため、装置が
大型化しシリンダーを内蔵するなど、スペースの小さい
所でビームを回転して交換するには問題となる点があっ
た。又、リテーナ−を切断しないとビームは交換出来な
いため、この切断リテーナ−をも取り出す必要があるが
、従来の発明でけりテーナーを取シ出ぜない欠点があっ
た。As a conventional jet pump beam exchange device, the patent application
6-94394 There is a method and device for replacing parts of a jet pump in a boiling water reactor, but since the replacement is done by grasping the lower part of the jet pump beam, the device becomes large and requires space, such as having a built-in cylinder. There was a problem in rotating and replacing the beam in a small space. Further, since the beam cannot be replaced without cutting the retainer, it is necessary to remove the cut retainer as well, but the conventional invention has the disadvantage that the cut retainer cannot be removed.
本発明の目的は交換の必要なジェットポンプビームを取
り外すために、予め水中切断機でリテーナ−を切断後本
発明による交換装置でビームを掴ミ締付ボルトを緩めビ
ームをトランジションピースアームから回転させ外し更
に切断リテーナ−をビームボルトとビームの間に鋏み脱
落しないように取外すことのできる交換装置を提供する
ことにある。The purpose of the present invention is to remove a jet pump beam that needs to be replaced by cutting the retainer using an underwater cutter in advance, then grasping the beam with the replacement device according to the present invention, loosening the tightening bolt, and rotating the beam from the transition piece arm. It is an object of the present invention to provide a replacement device that can be removed and removed by scissoring a cutting retainer between a beam bolt and a beam so that it does not fall off.
ジェットポンプビームはトランジションピースアームか
ら外すには回転させる必要があるそこでスペース上の制
限からビームの側面に付きのテンショナー月産を掴むよ
うにし装置を小型化した。The jet pump beam needs to be rotated to remove it from the transition piece arm, so due to space limitations, we made the device more compact by gripping the tensioner attached to the side of the beam.
又切断リテーナ−が脱落しないようにビームボルトで固
定してから取シ出すようにした。Also, to prevent the cutting retainer from falling off, it is fixed with beam bolts before being removed.
以下、本発明の一実施例を第１図、第２図によシ説明す
る。第１図はジェットポンプビームをビーム交換装置で
掴んだ状態を示す。ビームはビームリテーナ−で脱落防
止をしており予めこのビームリテーナ−をコーナ一部で
水中切断しておく必要がある。ビーム側面のテンショナ
ー用座部を鋏むように掴んだ後ビームポル）ｋスパナで
回し、ビームをトランジションピースから外すと同時に
切断リテーナ−をボルトとビームの間に鋏み、ビーム全
体を９０°回転して上部へ引き上げる又新ビームの取付
けはこれと反対の操作を行うことにより可能となる。第
２図は第１図の側面図であり、ビームを鋏む機構を説明
する。外部シリンダーと鋏とピン接合している中間シリ
ンダーの相対変位によりビームを鋏むことか可能となっ
ている。中間シリンダーの内部にはボルト用スパナロン
ドが入っておりこれを回転することによシボルトの締付
は及び緩めが可能である。本実施例によればビームを鋏
み、ボルトを回転させビーム及び切断リテーナ−を脱落
しないように交換することが可能である。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Figure 1 shows the state in which the jet pump beam is gripped by the beam exchanger. The beam is prevented from falling off with a beam retainer, and it is necessary to cut the beam retainer underwater at a part of the corner in advance. After gripping the tensioner seat on the side of the beam with a scissoring motion, turn the beam with a spanner and remove the beam from the transition piece. At the same time, scissor the cutting retainer between the bolt and the beam, rotate the entire beam 90 degrees and move it to the top. Raising and installing a new beam is possible by performing the opposite operation. FIG. 2 is a side view of FIG. 1, and will explain the mechanism for clipping the beam. It is possible to scissor the beam by the relative displacement of the external cylinder and the intermediate cylinder that is pin-connected to the scissors. There is a bolt spanner rod inside the intermediate cylinder, and by rotating it, the bolt can be tightened or loosened. According to this embodiment, by scissoring the beam and rotating the bolt, it is possible to replace the beam and cutting retainer without falling off.
本発明によれば予め水中切断機でビームリテーナ−を切
断すればビームの交換が可能となる。According to the present invention, the beam can be replaced by cutting the beam retainer in advance with an underwater cutter.
第１図はジェットポンプビームをビーム交換装置で掴ん
だ正面図、第２図はその側面図を示す。
１・・・ジェットポンプビーム、２・・・テンショナー
座押１．付はピース、３・・・鋏み、４・・・外部シリ
ンダー、５・・・中間シリンダー、６・・・スパナロン
ド、７・・・ピン、８・・・ビームリテーナー、９・・
・トランジションピースアーム、１０・・リティナー切
断箇所。
代理人 弁理士 高橋明夫
第 １■
第２図FIG. 1 shows a front view of the jet pump beam gripped by a beam exchanger, and FIG. 2 shows a side view thereof. 1... Jet pump beam, 2... Tensioner seat pusher 1. Attachments include piece, 3... scissors, 4... external cylinder, 5... intermediate cylinder, 6... spanner iron, 7... pin, 8... beam retainer, 9...
・Transition piece arm, 10... Retainer cutting point. Agent Patent Attorney Akio Takahashi No. 1■ Figure 2
Claims (1)
ピースと外部シリンダー及び座を鋏み持ち上げる中間シ
リンダー及びビームボルト用スパナロッドからなり、予
めビームリテイナーを切断後ビーム及びリテイナーを交
換することを特徴とするジェットポンプビーム交換装置
。1. A jet pump beam consisting of a piece for pressing the jet pump tensioner seat, an external cylinder, an intermediate cylinder for lifting the seat, and a spanner rod for the beam bolt, and characterized in that the beam and retainer are replaced after cutting the beam retainer in advance. Exchange device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154896A JPS6047993A (en) | 1983-08-26 | 1983-08-26 | Jet pump beam exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154896A JPS6047993A (en) | 1983-08-26 | 1983-08-26 | Jet pump beam exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6047993A true JPS6047993A (en) | 1985-03-15 |
Family
ID=15594322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58154896A Pending JPS6047993A (en) | 1983-08-26 | 1983-08-26 | Jet pump beam exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047993A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4995158A (en) * | 1989-02-08 | 1991-02-26 | Westinghouse Electric Corp. | Apparatus for servicing a jet pump hold down beam in a nuclear reactor |
| JPH05203787A (en) * | 1992-01-28 | 1993-08-10 | Hitachi Ltd | Method and device for replacing jet pump component |
| WO1997035322A1 (en) * | 1996-03-22 | 1997-09-25 | Westinghouse Electric Corporation | Jet pump beam tensioner |
| JP2008026215A (en) * | 2006-07-24 | 2008-02-07 | Toshiba Corp | Jet pump retainer removing method |
-
1983
- 1983-08-26 JP JP58154896A patent/JPS6047993A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4995158A (en) * | 1989-02-08 | 1991-02-26 | Westinghouse Electric Corp. | Apparatus for servicing a jet pump hold down beam in a nuclear reactor |
| JPH05203787A (en) * | 1992-01-28 | 1993-08-10 | Hitachi Ltd | Method and device for replacing jet pump component |
| WO1997035322A1 (en) * | 1996-03-22 | 1997-09-25 | Westinghouse Electric Corporation | Jet pump beam tensioner |
| JP2008026215A (en) * | 2006-07-24 | 2008-02-07 | Toshiba Corp | Jet pump retainer removing method |
| JP4580908B2 (en) * | 2006-07-24 | 2010-11-17 | 株式会社東芝 | How to remove the jet pump retainer |
| US8724767B2 (en) | 2006-07-24 | 2014-05-13 | Kabushiki Kaisha Toshiba | Method of removing retainer of jet pump and jet pump |
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