JPS58105058A - Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel - Google Patents

Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel

Info

Publication number
JPS58105058A
JPS58105058A JP56203502A JP20350281A JPS58105058A JP S58105058 A JPS58105058 A JP S58105058A JP 56203502 A JP56203502 A JP 56203502A JP 20350281 A JP20350281 A JP 20350281A JP S58105058 A JPS58105058 A JP S58105058A
Authority
JP
Japan
Prior art keywords
spring
track
pressure vessel
reactor pressure
fixed
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.)
Granted
Application number
JP56203502A
Other languages
Japanese (ja)
Other versions
JPH0260980B2 (en
Inventor
Kunitaka Asano
國隆 浅野
Akira Nakada
仲田　昭
Yutaka Kimura
裕 木村
Yutaka Nakano
裕 中野
Sadao Shibuya
渋谷　定男
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.)
Hitachi Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
Hitachi Ltd
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 Hitachi Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP56203502A priority Critical patent/JPS58105058A/en
Publication of JPS58105058A publication Critical patent/JPS58105058A/en
Publication of JPH0260980B2 publication Critical patent/JPH0260980B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q9/00—Arrangements for supporting or guiding portable metal-working machines or apparatus
    • B23Q9/0014—Portable machines provided with or cooperating with guide means supported directly by the workpiece during action
    • B23Q9/0021—Portable machines provided with or cooperating with guide means supported directly by the workpiece during action the tool being guided in a circular path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2695—Bottles, containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

PURPOSE:To absorb thermal expansion of a rail and vibration thereof due to earth quake by restricting motions other than vertical and radial ones in combination with a spring. CONSTITUTION:A 4-joint line ABCD is a main component. The joint A is fixed on a support 21F of a rail 3 while the joint C is fixed on a gamma shield 6 with a bracket 22. Spring hooks 23 and 24 are mounted on the joints B and D respectivly in such a manner as to be free to rotate and a spring 25 is interposed therebetween. As the rail 3 expands thermally, the point A is constrained in the direction X but free in the direction of Y+Z. Whenever the point A is moved to reduce the distance between A and B, it is returned by a reaction force of a spring 25. Extending the distance causes a sleeve 26 to hit against the spring hooks 23 and 24 while reducing it beyond a fixed range causes the spring hooks 23 and 24 to hit against stoppers 27 and 28. In this manner, any such an attempt is restricted.

Description

【発明の詳細な説明】 本発明は、原子炉圧力容器溶接線を検査するために容器
表面近くに縦横に設置された走行体案内用の一体型軌道
の地震等による振動、及び、熱膨張による２方向（垂直
■、半径（至）方向）の伸びを吸収する振れ止め機構に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to prevent vibrations caused by earthquakes and thermal expansion of integrated tracks for guiding traveling bodies installed vertically and horizontally near the surface of the reactor pressure vessel in order to inspect weld lines of the reactor pressure vessel. This invention relates to a steady rest mechanism that absorbs elongation in two directions (vertical and radial directions).

第１図に示すように原子炉圧力容器１は、保温材２がそ
の回りに張りめぐらされている。容器表面を検査する走
行体を案内するためには、上記保温材の内側に軌道３を
設置する必要がある。本軌道は、繰り返し熱応力下にお
いても健全性、精度。As shown in FIG. 1, a reactor pressure vessel 1 has a heat insulating material 2 stretched around it. In order to guide the traveling body that inspects the container surface, it is necessary to install a track 3 inside the heat insulating material. This track maintains soundness and accuracy even under repeated thermal stress.

信頼性が要求される。また１本軌道は、γシールド６に
固定されるが、その支持部４すなわち保温材の貫通部５
を少なくシ、容器１の熱漏洩を防ぐために一体型軌道で
ある。本軌道には、地震等による振れを吸収する振れ止
め機構を設置する必要がある。振れ止め機構は軌道の２
方向（垂直Ｚ。Reliability is required. Moreover, one track is fixed to the γ shield 6, and its support portion 4, that is, the penetration portion 5 of the heat insulating material
It is an integrated track to reduce heat leakage and prevent heat leakage of the container 1. It is necessary to install a steady rest mechanism on this track to absorb vibrations caused by earthquakes, etc. The steady rest mechanism is on track 2.
Direction (vertical Z.

半径Ｙ方向）の熱膨張全同時に吸収することが必要であ
るため、一体型軌道実施のネックとなっていた。Since it is necessary to absorb all of the thermal expansion in the radial direction (Y direction) at the same time, this has been a bottleneck in implementing an integrated orbit.

本発明は、原子炉圧力容器表面走行用一体型軌道におい
て、原子炉圧力容器及びその関連機器の安全性に影響を
与えることなく、軌道の地震等による振動を吸収し、尚
かつ熱膨張による縦軌道の垂直方向の伸びと周軌道の半
径方向の伸びを［同時に吸収し、繰り返し熱応力による
軌道の劣化を防止し、ｆ＃度、信頼性を確保する振れ止
め機構を提供することにある。The present invention provides an integrated track for running on the surface of a nuclear reactor pressure vessel, which absorbs vibrations caused by earthquakes, etc. of the track without affecting the safety of the reactor pressure vessel and its related equipment, and which also absorbs vertical vibrations caused by thermal expansion. The object of the present invention is to provide a steady rest mechanism that simultaneously absorbs the vertical elongation of the track and the radial elongation of the circumferential track, prevents deterioration of the track due to repeated thermal stress, and ensures f# degree and reliability.

第１図に示すように一体型軌道３は、主に縦軌道１０９
周軌道１１．支持部４から構成さね、ており、支持部４
は、γシールド６に固定されている。As shown in FIG. 1, the integrated track 3 mainly consists of a vertical track 109.
Circumferential orbit 11. The support part 4 consists of a support part 4.
is fixed to the γ shield 6.

これら軌道は熱膨張により、垂直方向Ｚ及び半径方向Ｙ
に伸びる。これにより、軌道の振れ止め部って振れ止め
機構は、これらの動き以外の動きをリンクにより制約し
、スプリングを併用することにより軌道の熱膨張及び地
震による振動を吸収することができる。Due to thermal expansion, these orbits move vertically in the Z direction and in the radial direction in the Y direction.
It grows to. As a result, the steady rest mechanism, which is the steady rest part of the track, can restrict movements other than these movements by the links, and can absorb thermal expansion of the track and vibrations due to earthquakes by using the springs in combination.

以下１本発明の一実施例を第２図〜第４図によシ説明す
る。An embodiment of the present invention will be explained below with reference to FIGS. 2 to 4.

第２図において１本実施例の構成を示す。FIG. 2 shows the configuration of one embodiment.

４節すンクＡＢＣＤが主構成部品であシ、Ａはフランジ
２０によシ軌道のサポート２１［Ｆ］に固定されるＣは
、ブラケット２２によりγシールド６に固定される。Ｂ
、Ｄにはそれぞれスプリングフック２３．２４が回転自
由な状態で付いており。The four-bar link ABCD is the main component, A is fixed to the support 21 [F] of the raceway by a flange 20, and C is fixed to the γ shield 6 by a bracket 22. B
, D are each equipped with spring hooks 23 and 24 that can rotate freely.

その間にスプリング２５が入っている。スプリング２５
にはスリーブ２６がかぶせてあり、またスト７パ２７，
２８がついている。よってスプリングフック２３．２４
はスリーブ２６とストッパ２７．２８の間でしか移動で
きぬよう制限されている。A spring 25 is inserted between them. spring 25
is covered with a sleeve 26, and the stopper 27,
It has 28 on it. Therefore, spring hook 23.24
is restricted to movement only between sleeve 26 and stop 27,28.

第３図において１本実施例の動きを説明する。The operation of this embodiment will be explained with reference to FIG.

本実施例は、設置時、実線の示す状態にある。When installed, this embodiment is in the state shown by the solid line.

軌道３が熱膨張するとＡ点けｙ−１−ｚによりＡ′点に
移動する。このときリンクＡＢＣＤは０点を中心に回転
し、望ましくＶｉＡ〒−百となるように設定する。Ａ点
はＸ方向には拘束されＹ＋Ｚ方向には自由である。ただ
しＡＣの距離を小さくするように移動しようとすると、
スプリング２５の反力により戻される。ＡＣの距離は設
置状態より長くなろうとするとスリーブ２６とスプリン
グフック２３．２４がぶつか少制限される。またある一
定範囲を超えて短くなろうとするとスプリングフック２
３．２４とストッパ２７．２８がぶつか９制限される。When orbit 3 thermally expands, it moves to point A' due to point A y-1-z. At this time, the link ABCD rotates around the 0 point and is preferably set to ViA〒-100. Point A is constrained in the X direction and free in the Y+Z direction. However, if you try to move to reduce the distance of AC,
It is returned by the reaction force of the spring 25. If the AC distance is to become longer than the installed state, the sleeve 26 and the spring hooks 23, 24 will collide and be limited. Also, if you try to shorten beyond a certain range, the spring hook 2
3.24 and stopper 27.28 collide and are restricted by 9.

第４図に本発明の軌道３への設置例を示す。FIG. 4 shows an example of installing the present invention on the track 3.

振れ止め４０は、少なくとも３つ以上を望ましくは等間
隔で設置する。At least three steady rests 40 are preferably installed at equal intervals.

本図では４つ（Ｈ，１，Ｊ、Ｋ）設置した例を示す。This figure shows an example where four (H, 1, J, K) are installed.

軌道が地震等によりＰ方向へ振れようとすると。If the orbit attempts to sway in the P direction due to an earthquake, etc.

振れ止め（Ｉ）　、　（）Ｏは固定となり１ｇ）もスリ
ーブ２６の制限によシ固定となる。（−１はスプリング
２５の反力によりＰと反対の力を生じる。Steady rests (I) and ()O are fixed, and 1g) is also fixed due to the restriction of the sleeve 26. (-1 produces a force opposite to P due to the reaction force of the spring 25.

本実施例によれば、Ａ点の熱膨張による移動量（ｙ＋ｚ
）を吸収し、軌道３の地震等による撮れを吸収すること
ができる。According to this embodiment, the amount of movement due to thermal expansion of point A (y+z
), and it is possible to absorb the image loss due to earthquakes, etc. in orbit 3.

本発明によれば、一体型軌道の熱膨張による２方向の伸
び（至）・（イ）を吸収し、原子炉運転時においても軌
道に応力を与えない。よって軌道の健全性を保てる。ま
た信頼性、精度のきびしく要求される供用期間中検査等
においても常に軌道を正確な位置に設置することができ
る。According to the present invention, the elongation (to) and (a) in two directions due to thermal expansion of the integrated track is absorbed, and no stress is applied to the track even during nuclear reactor operation. Therefore, the soundness of the orbit can be maintained. In addition, the track can always be placed in an accurate position even during in-service inspections that require strict reliability and accuracy.

また地震時においても軌道の振れをおさえ、軌道そのも
のはもちろん、原子炉圧力容器及びその関連機器の安全
性を保障するものである。In addition, it suppresses orbital fluctuations in the event of an earthquake, ensuring the safety of not only the orbit itself but also the reactor pressure vessel and related equipment.

尚１本発明により画期的な発明である一体型軌道を実施
することが可能となった。Additionally, the present invention has made it possible to implement an integrated track, which is an epoch-making invention.

尚１本発明は、第５図に示すようにストッパ２７’、２
８’をリンクの外側に設けることが可能である。Note that the present invention provides stoppers 27' and 2 as shown in FIG.
8' can be provided on the outside of the link.

又、４節リンクの代りに第６図の機構により振れ止めを
行うことが可能である。Further, instead of the four-bar link, it is possible to use the mechanism shown in FIG. 6 to provide a steady rest.

本機構は、スライダーを有するリンク機構でありｍ　Ａ
’　＋　ｃ’は第２図のＡ、Ｃにあたるものである。キ
ー６０はミゾ６１と合わせスライダー機構を構成する。This mechanism is a link mechanism with a slider.
'+c' corresponds to A and C in FIG. The key 60 and the groove 61 constitute a slider mechanism.

ミゾ６１はカバー６２においており、カバー６２はピン
６３によシブラケット２２と回転自由に取付けられてい
る。キー６０はアーム６４に固定されており、フランジ
２０とピン６７により回転自由に取付けられている。尚
キー６０は板バネ６５．６６によシ中立位置を保つよう
支持されている。The groove 61 is located in a cover 62, and the cover 62 is rotatably attached to the bracket 22 by a pin 63. The key 60 is fixed to the arm 64 and is rotatably attached by the flange 20 and pin 67. The key 60 is supported by leaf springs 65 and 66 so as to maintain a neutral position.

更に、第２図のスプリング部の代シに第７図に示すよう
にリードねじ７０およびリードプッシュ７１を用いるこ
とが可能である。リードねじ７０は支点Ｂのホルダー７
２に回転自由に取り付けられており、リードブツシュ７
１は支点りに取り付けられている。尚、リードねじ７０
の先端には。Furthermore, it is possible to use a lead screw 70 and a lead push 71 as shown in FIG. 7 in place of the spring portion in FIG. 2. The lead screw 70 is the holder 7 at the fulcrum B.
2 and is rotatably attached to lead bush 7.
1 is attached to a fulcrum. In addition, lead screw 70
At the tip of.

ストッパー７３が取付けられる。A stopper 73 is attached.

Ｂ、Ｔ）間距離の変化が急峻な時は、リードねじ７０は
固定となり、変化がおそい時は、リードねじ７０が徐々
に回転し、距離を調整する。When the change in the distance between B and T) is steep, the lead screw 70 remains fixed, and when the change is slow, the lead screw 70 gradually rotates to adjust the distance.

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

第１図は、原子炉圧力容器まわり及び一体型軌道の設置
状態図、第２図は、実施例の概略図、第３図は、実施例
の動作説明図、第４図は１本発明の軌道への設置例を示
す図、第５図、第６Ｍおよび第７図は、それぞれ他の実
施例を示す図である。 １・・・原子炉圧力容器、２・・・保温材、３・・・一
体型軌道、４・・・支持部、訃・・保温材貫通部、６・
・・γシールド、１０・・・縦軌道、１１・・・周軌道
、２０・・・フランジ、２１・・・サポート、２２・・
・ブラケット、２３゜２４・・・スプリングフック、２
５・・・スプリング。 ２６・・・スリーブ、２７．２８・・・ストッパ、４０
（Ｈ，１，Ｊ、Ｋ）・・・振れ止め。 矛　ｑ　図Fig. 1 is an installation state diagram of the area around the reactor pressure vessel and the integrated track, Fig. 2 is a schematic diagram of the embodiment, Fig. 3 is an explanatory diagram of the operation of the embodiment, and Fig. 4 is a diagram of one embodiment of the present invention. Figures 5, 6M, and 7 showing an example of installation on a track are diagrams showing other embodiments, respectively. DESCRIPTION OF SYMBOLS 1... Reactor pressure vessel, 2... Heat insulation material, 3... Integrated track, 4... Support part, butt... Heat insulation material penetration part, 6...
...γ shield, 10...vertical orbit, 11...circumferential orbit, 20...flange, 21...support, 22...
・Bracket, 23°24...Spring hook, 2
5...Spring. 26...Sleeve, 27.28...Stopper, 40
(H, 1, J, K)... Steady rest. spear q diagram

Claims (1)

【特許請求の範囲】 １、原子炉圧力容器の表面走行用一体型軌道をγシール
ドから支持するものであって、前記容器の軸断面の２次
元方向にのみ移動可能なリンク機構を少なくとも３個以
上設置したことを特徴とする軌道の振れ止め機構。 ２、前記リンク機構は、リンク機構の動きを制限するス
トッパおよびスリーブを有し、スプリングの作用によっ
て常に初期状態を保つよう構成されていることを特徴と
する特許請求の範囲第１項記載の軌道の振れ止め機構。[Scope of Claims] 1. At least three link mechanisms that support the integrated track for running on the surface of the reactor pressure vessel from the γ shield and are movable only in two-dimensional directions of the axial cross section of the vessel. A track resting mechanism characterized by having the above installed. 2. The track according to claim 1, wherein the link mechanism has a stopper and a sleeve that restrict movement of the link mechanism, and is configured to always maintain an initial state by the action of a spring. Steady rest mechanism.
JP56203502A 1981-12-18 1981-12-18 Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel Granted JPS58105058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56203502A JPS58105058A (en) 1981-12-18 1981-12-18 Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56203502A JPS58105058A (en) 1981-12-18 1981-12-18 Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel

Publications (2)

Publication Number Publication Date
JPS58105058A true JPS58105058A (en) 1983-06-22
JPH0260980B2 JPH0260980B2 (en) 1990-12-18

Family

ID=16475213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56203502A Granted JPS58105058A (en) 1981-12-18 1981-12-18 Steady-rest mechanism of surface running integral track for nuclear reactor pressure vessel

Country Status (1)

Country Link
JP (1) JPS58105058A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058548A (en) * 1983-09-12 1985-04-04 Ngk Spark Plug Co Ltd Air/fuel ratio sensor of engine
JPS6061687A (en) * 1983-09-14 1985-04-09 株式会社日立製作所 Travelling track facility around pressure vessel for nuclear reactor and method of constructing said facility
JP2007232418A (en) * 2006-02-28 2007-09-13 Hitachi Ltd Inspection apparatus carry-in carrier and track

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166558A (en) * 1981-04-08 1982-10-14 Hitachi Ltd Track for run on surface of nuclear reactor pressure container

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166558A (en) * 1981-04-08 1982-10-14 Hitachi Ltd Track for run on surface of nuclear reactor pressure container

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058548A (en) * 1983-09-12 1985-04-04 Ngk Spark Plug Co Ltd Air/fuel ratio sensor of engine
JPS6061687A (en) * 1983-09-14 1985-04-09 株式会社日立製作所 Travelling track facility around pressure vessel for nuclear reactor and method of constructing said facility
JP2007232418A (en) * 2006-02-28 2007-09-13 Hitachi Ltd Inspection apparatus carry-in carrier and track
JP4663551B2 (en) * 2006-02-28 2011-04-06 日立Ｇｅニュークリア・エナジー株式会社 Inspection equipment truck

Also Published As

Publication number Publication date
JPH0260980B2 (en) 1990-12-18

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