JPS585695A - Structure for supporting stand pipe of reactor pressure vessel - Google Patents
Structure for supporting stand pipe of reactor pressure vesselInfo
- Publication number
- JPS585695A JPS585695A JP56103153A JP10315381A JPS585695A JP S585695 A JPS585695 A JP S585695A JP 56103153 A JP56103153 A JP 56103153A JP 10315381 A JP10315381 A JP 10315381A JP S585695 A JPS585695 A JP S585695A
- Authority
- JP
- Japan
- Prior art keywords
- pressure vessel
- standpipe
- support
- key
- reactor pressure
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 230000035515 penetration Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (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】
この発明は、原子炉圧力容器に装着されたスタンドパイ
プの支持構造の改良に関す−る。DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in the support structure of a standpipe attached to a nuclear reactor pressure vessel.
原子炉圧力容器には、燃料交侠および制縄用棒駆靭装置
を収容するための多数のスタンドパイプか装着されてい
るか、運転中の該圧力容器の熱膨張のためにスタンドパ
イプに曲げ荷重が加わるという問題かあった。この点を
第１図・′第２図を用いて更に説明する。The reactor pressure vessel is equipped with a large number of standpipes for accommodating fuel exchange and control rod drive devices, or bending loads are applied to the standpipes due to thermal expansion of the pressure vessel during operation. There was a problem with the addition of This point will be further explained using FIGS. 1 and 2.
従来のこの種スタンドパイプ支持構造を第１図に示し、
格納室６内にサポートスカート７に支えられて原子炉圧
力容ｄ５か設置され、該圧力容器の上鏡４に取付けられ
た多数のスタンドパイプ１は、図示の頬く格納室６に固
設した遮蔽コンクリート２に配設された貫通孔３に挿入
配置されて、その水平位置の支持が行われるよう心構酸
されている。このような構造において運転時この圧力容
器５か昇温して熱膨張するとき、サポートスカート７は
昇温せずかつ該圧力容器は一般に縦長楕円体を成すので
、第２図のように上鏡４上に配置された各スタンドパイ
プ１の下部は、第１図の矢印のような圧力容器の径方向
に変位すると同時に上向きの変位をする。−万スタンド
パイブ１の上端とこれを支持する遮蔽コンクリート２は
室温下にあるため膨張変位を起すことがないため、各ス
タンドパイプ１には好ましくない曲げ荷重が加わって、
スタンドパイプ支持構造の寿命短縮を招く。A conventional standpipe support structure of this type is shown in Figure 1.
A reactor pressure vessel d5 is installed in the containment chamber 6 supported by a support skirt 7, and a number of standpipes 1 attached to the upper mirror 4 of the pressure vessel are fixedly installed in the illustrated containment chamber 6. It is inserted into a through hole 3 provided in the shielding concrete 2 and is arranged so as to support its horizontal position. In such a structure, when the pressure vessel 5 rises in temperature and thermally expands during operation, the support skirt 7 does not rise in temperature and the pressure vessel generally forms a vertically elongated ellipsoid. The lower part of each standpipe 1 disposed on the standpipe 4 is displaced in the radial direction of the pressure vessel as indicated by the arrow in FIG. 1, and at the same time is displaced upward. - The upper end of the standpipe 1 and the shielding concrete 2 supporting it are at room temperature and do not undergo expansion displacement, so an undesirable bending load is applied to each standpipe 1.
This will shorten the life of the standpipe support structure.
そこで、か＼る曲げ荷重を避けるために貫通孔３を大き
くする方式が提案されているが、このような構造にする
と地震発生の際、この貫通孔３の範囲内で各スタンドパ
イプ１が振励し特にその横振動が、スタンドパイプその
物は勿論支持構造に損傷を与えるという問題が起る。Therefore, a method has been proposed in which the through-holes 3 are made larger in order to avoid such bending loads. However, with such a structure, each standpipe 1 will be shaken within the range of the through-holes 3 in the event of an earthquake. The problem arises that the excitation, especially the lateral vibrations, can damage the support structure as well as the standpipe itself.
この発明は、上記従来の支持構造の問題点を解決し、運
転時の熱膨張に伴うスタンドパイプの曲げ荷重発生を防
止し併せて地震時の振動を考慮したスタンドパイプ支持
構造を提供することを目的としている。この支持構造の
要旨は、スタンドパイプ支持部における前記径方向の変
位を吸収するように、スタンドパイプ貫通孔３を大きく
すると共に、各スタンドパイプ外壁に対設した１対のく
さび形ラジアルキーを支えるキー溝を有するキーサポー
トを遮蔽コンクリート」二に設けた支持構造を採る。そ
して、このキーのくさび角すなわちキー溝の溝角の正接
か、各スタンドパイプの支持部すなわちキー取付部の径
方向と上方向との変位量の比になるようにしたことにあ
る。The present invention solves the above-mentioned problems of the conventional support structure, and provides a standpipe support structure that prevents the generation of bending loads on the standpipe due to thermal expansion during operation, and also takes into account vibrations during earthquakes. The purpose is The gist of this support structure is to enlarge the standpipe through hole 3 so as to absorb the radial displacement in the standpipe support part, and to support a pair of wedge-shaped radial keys installed opposite to each other on the outer wall of each standpipe. A support structure is adopted in which a key support with a key groove is provided in the shielding concrete. The wedge angle of the key, that is, the tangent of the groove angle of the key groove, or the ratio of the displacement between the radial direction and the upward direction of the supporting portion of each stand pipe, that is, the key mounting portion.
第３図・第４図に本発明の一実施例を示し、連数コンク
リート２上に固定した一対のキーサポート９・９′にそ
れぞれキー溝Ｓ−８’を設け、これに係合するような互
に上下方向を遊にした（さび形ラジアルキー８・８′を
スタンドパイプ１の外壁面に固定してスタンドパイプ支
持を行っている。An embodiment of the present invention is shown in FIGS. 3 and 4, in which a pair of key supports 9 and 9' fixed on the continuous concrete 2 are provided with key grooves S-8', respectively, so as to engage with the key grooves S-8'. The wedge-shaped radial keys 8 and 8' are fixed to the outer wall surface of the stand pipe 1 to support the stand pipe.
そして、圧力容器５の熱膨張によりその径方向に生ずる
各スタンドパイプ１の変位を吸収するような構造１どす
る。ここで“変位を吸収″とは変位による曲げ荷重等が
か＼らなくすることをいう。そ−のため、遮蔽コンクリ
ート２に設けた各貫通孔３の該径方向の間隙を広くする
。例えば、各貫通孔断面は長細か径方向にある楕円をな
し、長軸の長さは貫通孔３が外側にあるもの程長くなる
ようにする。The structure 1 is designed to absorb the displacement of each standpipe 1 caused in the radial direction due to thermal expansion of the pressure vessel 5. Here, "absorbing displacement" refers to eliminating bending loads caused by displacement. Therefore, the radial gap between each through hole 3 provided in the shielding concrete 2 is widened. For example, the cross section of each through hole is an elongated or narrow ellipse in the radial direction, and the length of the long axis is made longer as the through hole 3 is located on the outside.
さらに、各スタンドパイプ１の支持を安定にするように
、スタンドパイプ・１外壁に対設する１対のラジアルキ
ー８・８′とこれに係合される千−サポート９・９′は
圧力容器５の径方向を占めるように配置する。そして、
各スタンドパーイブ１の遮蔽コンクリート２に対する支
持部すなわちラジアルキー取付部における、圧力容器５
の熱膨張による上方向と径方向との変位量の比が、これ
ら（さび形Φ両生−のくさび角（θで第３図に示す）即
ち上記キーｎ５−ｓ’の溝角の正接になるようにする。Furthermore, in order to stably support each standpipe 1, a pair of radial keys 8 and 8' that are installed opposite to each other on the outer wall of each standpipe 1 and supports 9 and 9' that are engaged with the radial keys 8 and 9' are connected to the pressure vessel. 5 in the radial direction. and,
The pressure vessel 5 at the support part for the shielding concrete 2 of each stand perve 1, that is, the radial key attachment part.
The ratio of the displacement amount in the upward direction and in the radial direction due to thermal expansion is the wedge angle (θ shown in FIG. 3) of the wedge shape Φ, that is, the tangent of the groove angle of the key n5-s'. Do it like this.
このように構成したので、圧力容器５が熱ｄａしてスタ
ンドパイプ支持部が上向きに変位すると、両うジアル十
−８・８′はキー溝ｓ −ｓ’内を摺動し、この上向き
変位と同時に起る径方向変位量だけ径方向に変位するこ
とになる。With this configuration, when the pressure vessel 5 heats up and the standpipe support section is displaced upward, both the piers 1-8 and 8' slide within the keyway s-s', and this upward displacement is prevented. It will be displaced in the radial direction by the amount of radial displacement that occurs at the same time.
次の実施例を第５図・第６図に示し、この支持構造では
、各スタンドパイプ１に２つ割り型バンド１０・１０’
を取１１′け、これに各牛−８・８′を固定し、更にス
タンドパイプ１を巻いて固定したサポートリング１上に
両バンド１ｏ・１０’を載置する構成とした。か＼る構
造とすると、支持構造の製作及び据付か容易になる。The next embodiment is shown in FIGS. 5 and 6, and in this support structure, each stand pipe 1 has two split bands 10 and 10'.
Cows 8 and 8' are fixed to this, and both bands 1o and 10' are placed on a support ring 1 around which a stand pipe 1 is wound and fixed. Such a structure facilitates the manufacture and installation of the support structure.
以上の説明から明らかなように本発明を利用すると、運
転中に原子炉圧力容器が熱膨張してもスタンドパイプと
遮蔽コンクリートに設けた十−サポートとに構成された
キー機構が働いてスタンドパイプ支持部の径方向と上方
向との両変位が吸収されるので、従来の支持構造のよう
なスタンドパイプにか＼る曲げ荷重を除くことができる
。また、地震発生時に起るスタンドパイプの横振れを防
止でき、径方向のある程度の振動を吸収するという効果
か生じるのでスタンドパイプ支持構造の寿命劣化を防止
できる。As is clear from the above explanation, when the present invention is used, even if the reactor pressure vessel thermally expands during operation, the key mechanism configured in the standpipe and the support provided on the shielding concrete works to prevent the standpipe from expanding. Since both radial and upward displacements of the support portion are absorbed, the bending load applied to the stand pipe as in conventional support structures can be removed. Further, it is possible to prevent the standpipe from vibrating laterally during an earthquake, and because it has the effect of absorbing a certain amount of radial vibration, it is possible to prevent deterioration of the life of the standpipe support structure.
第１図は従来のこの種スタンドパイプ支持構造の縦断面
図、第２図はそのスタンドパイプ取付配置図、第３図・
第４図は本発明の一実施例の縦断面図・平向図、第５図
・第６図は第２実施例の縦ｔｌｆｒｌＩｌｉ図・平面図
である。
１、スタンドパイプ ２：遮蔽コンクリート３；貫通
孔 ４：上鏡
５：（原子炉）圧力容器
６、格納室
８・８′：＜さび形ラジアルキー
９・９′； キーサポート１０・１０′、バンド代理人
弁理士 中村純之助
矛１図
才２図
矛５図
１’６ 図Figure 1 is a vertical cross-sectional view of a conventional standpipe support structure of this type, Figure 2 is a diagram of its standpipe installation arrangement, and Figure 3.
FIG. 4 is a vertical sectional view and a plan view of one embodiment of the present invention, and FIGS. 5 and 6 are a vertical tlfrlIli view and a plan view of a second embodiment. 1. Standpipe 2: Shielding concrete 3; Through hole 4: Upper mirror 5: (Reactor) pressure vessel 6, Containment chamber 8, 8': <Wedge-shaped radial key 9, 9'; Key support 10, 10', Band agent patent attorney Junnosuke Nakamura 1 figure, 2 figures, 5 figures, 1'6 figures
Claims (1)
れて上方に延びる多数のスタンドパイプの°゛各各部部
、該格納室に固設した遮蔽コンク９−１に配設した多数
の貫通孔３のそれぞれに挿入して該各スタンドパイプの
水平位置の支持を行うようにした原子炉圧力容器スタン
ドパイプ支持構造において、該圧力容器の径方向の熱膨
張による各スタンドパイプの変位を吸収できるように各
貫通孔を形成し、かつ上下方向を互に逆にして対設され
る１対のくさび状ラジアルキーを該圧力容器の径方向に
位置するように各スタンドパイプの外壁に固設すると共
に、該キーのそれぞれに係合するようにキー溝を設けた
キーサポートを該遮蔽コンクリート上に対設し、更に該
キーのくさび角の正接が該圧力容器の熱膨張による各ス
タンドパイプの該キー取付部における径方向と上方向と
の変位量の比になるように構成したことを特徴とするス
タンドパイプ支持構造。Each part of a large number of standpipes attached to the upper mirror of the reactor pressure vessel installed in the containment room and extending upward, and a large number of penetrations arranged in the shielding concavity 9-1 fixed in the containment room. In the reactor pressure vessel standpipe support structure that is inserted into each of the holes 3 to support the horizontal position of each standpipe, it is possible to absorb displacement of each standpipe due to thermal expansion in the radial direction of the pressure vessel. A pair of wedge-shaped radial keys are formed oppositely in the vertical direction and are fixed to the outer wall of each stand pipe so as to be located in the radial direction of the pressure vessel. At the same time, a key support provided with a keyway to engage with each of the keys is provided on the shielding concrete, and furthermore, the tangent of the wedge angle of the key corresponds to the contact of each standpipe due to thermal expansion of the pressure vessel. A standpipe support structure characterized by being configured such that the displacement amount in the radial direction and in the upward direction at the key mounting portion is a ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56103153A JPS585695A (en) | 1981-07-03 | 1981-07-03 | Structure for supporting stand pipe of reactor pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56103153A JPS585695A (en) | 1981-07-03 | 1981-07-03 | Structure for supporting stand pipe of reactor pressure vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS585695A true JPS585695A (en) | 1983-01-13 |
| JPS6140357B2 JPS6140357B2 (en) | 1986-09-09 |
Family
ID=14346553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56103153A Granted JPS585695A (en) | 1981-07-03 | 1981-07-03 | Structure for supporting stand pipe of reactor pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585695A (en) |
-
1981
- 1981-07-03 JP JP56103153A patent/JPS585695A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140357B2 (en) | 1986-09-09 |
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