JPS62263871A - Pipe fitting structure in container mirror part - Google Patents
Pipe fitting structure in container mirror partInfo
- Publication number
- JPS62263871A JPS62263871A JP61106472A JP10647286A JPS62263871A JP S62263871 A JPS62263871 A JP S62263871A JP 61106472 A JP61106472 A JP 61106472A JP 10647286 A JP10647286 A JP 10647286A JP S62263871 A JPS62263871 A JP S62263871A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- welding
- convex curved
- curved surface
- mirror
- 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
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000035515 penetration Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 abstract description 35
- 239000000463 material Substances 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 150000002739 metals Chemical class 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 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)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、発電用の原子炉圧力容器等の容器に係り、該
容器の球面形状に形成された鏡部に管が貫通して取り付
けられている容器鏡部における管取付構造に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a container such as a nuclear reactor pressure vessel for power generation, in which a tube is attached to a spherical mirror portion of the container by penetrating it. This invention relates to a tube mounting structure in a container mirror section.
発電用の原子炉圧力容器（以下、これをＲＰＶと略す）
には、原子炉の出力等を外部から制御するための多くの
ハウジングとなる管がＲＰＶ貫通孔に取り付けられてい
る。第１６図には、沸騰水型の原子炉圧力容器の縦断面
図を示すがＲＰＶ下部の鏡部１は、一般に半球面形状を
しており、Ｌ１００ＭＷｅ級のＲＰＶであれば内半径約
３２００１ｍ＋、板厚的１６５Ｉという大型の半球面形
構造物となる。この鏡部に取り付けられる管の例を第１
７図及び第１８図に示す。１１００ＭＷｅ級ＲＰＶの場
合、管２より成る約６０本の中性子束モニタハウジング
が鏡部１を貫通して取り付けられでいるほか同じく管２
よりなる約１９０本の制御棒駆動機構ハウジングが鏡部
】、を貫通して取り付けられている。これらの管は、第
１８図に示した如く、互いに平行である。骸骨２は、第
１９図乃至第２１図に示した如く、一般に、鏡部１の内
張り材５の一ヒに溶接肉盛６を施し、当該管２を溶接部
７により固定して取り付けられている。第１９図は、鏡
部】、又は内張り材５とほぼ３Ｖ行に溶接肉盛６を施し
た場合の例であり、第２２図乃至第２４図は、管２と溶
接肉盛６との溶接部すなわち骸骨２との溶接部７の形状
が管２の中心軸まわりに対象となるよう溶接肉盛６の頂
部を水平にした場合の例である。Reactor pressure vessel for power generation (hereinafter abbreviated as RPV)
In the RPV through-hole, many tubes that serve as a housing for externally controlling the output of the nuclear reactor are attached. FIG. 16 shows a longitudinal cross-sectional view of a boiling water reactor pressure vessel. The mirror section 1 at the bottom of the RPV generally has a hemispherical shape, and in the case of an L100 MWe class RPV, the inner radius is approximately 32,001 m+. It will be a large hemispherical structure with a plate thickness of 165I. The first example of the tube attached to this mirror section is
This is shown in FIGS. 7 and 18. In the case of a 1100 MWe class RPV, approximately 60 neutron flux monitor housings consisting of tubes 2 are installed through the mirror part 1;
Approximately 190 control rod drive mechanism housings are installed through the mirror section. These tubes are parallel to each other as shown in FIG. As shown in FIGS. 19 to 21, the skeleton 2 is generally attached by applying a weld overlay 6 to one part of the lining material 5 of the mirror part 1, and fixing the pipe 2 with a welded part 7. There is. FIG. 19 shows an example in which welding overlay 6 is applied to the mirror part] or lining material 5 in approximately 3V rows, and FIGS. 22 to 24 show welding between pipe 2 and welding overlay 6. This is an example in which the top of the weld overlay 6 is made horizontal so that the shape of the welded portion 7 with the skeleton 2 is symmetrical about the central axis of the tube 2.
１−記に示した従来技術においては、以下に示す問題を
有している。The prior art shown in section 1-1 has the following problems.
（１）第１９図及び第２２図の例のいずれも、溶接肉盛
６の形状が、管２が取り付けられている場所毎に鏡部２
の傾きが異なっていることに対応して異なり、かつ肉盛
形状が鏡部７の底部の溶接肉盛６を除き一般に水平面形
状ではなく３次元構造となるため、管２の溶接がしにく
い。(1) In both the examples shown in FIG. 19 and FIG.
It is difficult to weld the pipe 2 because the inclinations of the pipes 2 and 3 are different, and the build-up shape is generally not a horizontal plane shape but a three-dimensional structure except for the weld build-up 6 on the bottom of the mirror section 7. Therefore, it is difficult to weld the pipe 2.
（２）同上の理由により、肉盛溶接６に対し自動溶接の
採用が田辺なため、溶接は、熟練者による手作業による
こととなり、溶接作業に時間がかかる。この場合、鏝部
１．内のスペースが狭く限られていることから、多数の
作業者が同時に作業できないことも溶接作業に時間を要
す一因である。(2) For the same reason as above, since automatic welding is not adopted for overlay welding 6, welding must be done manually by a skilled person, which takes time. In this case, the iron part 1. One of the reasons why welding work takes so long is that the space inside the welding machine is narrow and limited, so many workers cannot work at the same time.
（３）第１．９図の例では、肉盛溶接６の溶着量が、容
管２でほぼ同社となり溶着量が少なくて済むという利点
を有するものの、鋭部１底部の管２を除き、一般に、管
２の溶接部７の形状が水平ではなく３次元構造となるた
め、該溶接部７の溶着線が骸骨２のまわりでほぼ等しく
なるような溶接施行上の配慮を行なわないと、管２の溶
接後に、骸骨２が鏡部１の山側又は谷側に変形する（倒
れる）という現象が生じるため、溶接上の熟練を要する
。(3) In the example shown in Fig. 1.9, the amount of welding of the overlay welding 6 is almost the same on the container tube 2, and although there is an advantage that the amount of welding is small, except for the tube 2 at the bottom of the sharp part 1, In general, the shape of the welded part 7 of the pipe 2 is not horizontal but has a three-dimensional structure. After welding 2, a phenomenon occurs in which the skeleton 2 deforms (falls over) toward the peak or valley side of the mirror portion 1, and therefore requires skill in welding.
したがって自動溶接の採用が困難である。Therefore, it is difficult to employ automatic welding.
（４）第２２図の例では、溶接部７は、管２の中心軸ま
わりに軸対称構造となるため、前記（３）に示した欠点
を克服しうるものの、鏡部１の底部の管を除き、溶接肉
盛６の溶着量が多量となるため、肉盛溶接に時間と材料
費を要する。(4) In the example shown in FIG. 22, the welded portion 7 has an axially symmetrical structure around the central axis of the tube 2, so although the drawback shown in (3) above can be overcome, the tube at the bottom of the mirror portion 1 Except for this case, since the amount of weld overlay 6 is large, time and material cost are required for overlay welding.
本発明の目的は、鏡部に取り付けられる管の位置が鏡部
の底部であるか他の部位であるかによらずに管の溶接を
簡単に行なえ、溶接作業の自動化も図れ、しかも溶接作
業時に管の変形のおそれが少なく、溶着線も少なくて済
む容器鋭部における管取付構造を提供せんとするもので
ある。An object of the present invention is to be able to easily weld a tube regardless of whether the tube is attached to the bottom of the mirror section or at another location, to automate the welding operation, and to further automate the welding operation. It is an object of the present invention to provide a structure for attaching a pipe to a sharp part of a container, which is less likely to deform the pipe and requires fewer weld lines.
〔問題点を解決するための手段及び作用〕本発明は、容
器の球面形状に形成された鏡部に管が貫通して取付けら
れている容器鋭部における管取付構造において、前記鏡
部の’！？貫通位置に凸曲面部を突設し、該凸曲面部の
開口周縁と前記管とを溶接するようにしたものである。[Means and effects for solving the problem] The present invention provides a tube attachment structure for a sharp portion of a container in which a tube is attached to a spherical mirror portion of the container by penetrating it. ! ? A convex curved portion is provided protrudingly at the penetrating position, and the opening periphery of the convex curved portion is welded to the pipe.
そして、これにより溶接部分の構造を直線形状の管と骸
骨から放射方向に向って離反する凸曲面形状の凸曲面部
との交叉部として簡単な形状に形成し、その部分の溶接
を容易に行なえるようにしたものである。As a result, the structure of the welded part is formed into a simple shape as an intersection of a straight pipe and a convex curved part that is radially separated from the skeleton, and that part can be easily welded. It was designed so that
先ず、本発明を第１図乃至第３図に基づいて概略的に説
明する。同各回は鏡部１と管２凸曲面部８とを平面上に
模式的に示したものである。First, the present invention will be schematically explained based on FIGS. 1 to 3. Each time, the mirror portion 1 and the convex curved surface portion 8 of the tube 2 are schematically shown on a plane.
第１図は、球面形状の鏡部１と凸曲面部８と各中心０．
Ｑを任意にして形成したものである。この場合、管２と
凸曲面部８とのなす角αは４ｗ２のまわりで一定ではな
いが、該凸曲面部８の曲面形状が管２から逃げる方向で
あるため形状が単純化し、その部分の溶接が容易である
。尚、凸曲面部８を鏡部１と別体の部材にて形成する場
合には該凸曲面部８と鏡部１とを一体化する必要がある
が、その際の両者】２，８のなず角βはＯＱのまわりに
一定であるため、その溶接が極めて容易に行なえるもの
である。FIG. 1 shows a spherical mirror part 1, a convex curved part 8, and each center 0.
It is formed by setting Q arbitrarily. In this case, the angle α between the tube 2 and the convex curved surface portion 8 is not constant around 4w2, but since the curved shape of the convex curved surface portion 8 is in the direction of escaping from the tube 2, the shape is simplified, and the shape of that portion is simplified. Easy to weld. In addition, when the convex curved surface part 8 is formed of a separate member from the mirror part 1, it is necessary to integrate the convex curved surface part 8 and the mirror part 1, but in this case, both [2 and 8] Since the nozzle angle β is constant around OQ, welding can be performed extremely easily.
第２図は、凸曲面部８の中心Ｑを管２の軸線」二に位置
させて形成したものである。これにより、角αは管２の
まわりに一定（２次元軸対称）となるため、第１図の場
合より更にその部分の溶接が容易となる。In FIG. 2, the convex curved surface portion 8 is formed with the center Q located on the axis 2 of the tube 2. As a result, the angle α becomes constant around the tube 2 (two-dimensional axial symmetry), making it easier to weld that part than in the case of FIG.
第３図は、凸曲面部８の中心Ｑを管２の軸線上で且つ鏡
部１の表面上に位置させて形成したものである。Ｓは管
２と鏡部１表面との交点を示す。In FIG. 3, the convex curved surface portion 8 is formed so that the center Q is located on the axis of the tube 2 and on the surface of the mirror portion 1. S indicates the intersection between the tube 2 and the surface of the mirror section 1.
この場合、ｐｉｓ＝ｐ、ｓとなるため、鏡部１、管２及
び凸曲面部８とが構造的にバランスのとれたものとなる
。In this case, since pis=p, s, the mirror portion 1, tube 2, and convex curved surface portion 8 are structurally balanced.
また、第１図乃至第３図いずれの場合も、凸曲面部８を
中空の球面座にて形成した場合には、該球面座がディス
クスプリングと同等の効果を有するため、鏡部１と管２
の熱膨張差の違いに基づく応力は吸収され、管２の急激
な温度変化時における変形を防止することができる。In addition, in any case of FIGS. 1 to 3, if the convex curved surface portion 8 is formed by a hollow spherical seat, the spherical seat has the same effect as a disk spring, so the mirror portion 1 and the tube 2
The stress due to the difference in thermal expansion of the tubes 2 is absorbed, and deformation of the tube 2 during rapid temperature changes can be prevented.
以下１本発明を具体的に説明する。第７図乃至第１０図
は、本発明の一実施例を示す。凸曲面部８は中空の球面
座にて形成され、該球面座は鏡部１の内張り材５に溶接
されている。９はその溶接部を示すが、該溶接部９は第
１２図の場合も第１３図の場合も、そのなす角βが管２
のまわりに一定であるため、その溶接は容易に行なうこ
とができ、自動溶接も可能である。該球面座の曲率中心
位置は前記第３図に示したように管２の軸線上であって
且つ鏡部１表面上に位置するように形成されている。こ
れにより、管２と球面座の溶接部７における互いのなす
角αが管２のまわりに一定となり、この溶接部７の溶接
が極めて容易となり。The present invention will be specifically explained below. 7 to 10 show an embodiment of the present invention. The convex curved surface portion 8 is formed of a hollow spherical seat, and the spherical seat is welded to the lining material 5 of the mirror portion 1. 9 indicates the welded part, and the angle β of the welded part 9 is the same as that of the pipe 2 in both FIG. 12 and FIG.
Since the circumference is constant, its welding is easy and automatic welding is also possible. The center of curvature of the spherical seat is located on the axis of the tube 2 and on the surface of the mirror portion 1, as shown in FIG. As a result, the angle α between the tube 2 and the welded portion 7 of the spherical seat becomes constant around the tube 2, and welding of this welded portion 7 becomes extremely easy.
自動溶接可能となる。更に、鏡部１．管２及び凸曲面部
８とが構造的にバランスのとれたものとなる。Automatic welding becomes possible. Furthermore, the mirror part 1. The tube 2 and the convex curved surface portion 8 are structurally balanced.
さらに、管２は中空の球面座を介して鏡部１に取り付け
られているため、冷水注入時に鏡部１と管２との熱膨張
差の違いに起因して生じる熱応力はバネ性を有する球面
座にて吸収され、当該管２の変形を防止することができ
る。Furthermore, since the tube 2 is attached to the mirror part 1 via a hollow spherical seat, the thermal stress generated due to the difference in thermal expansion between the mirror part 1 and the tube 2 when cold water is poured has a spring property. It is absorbed by the spherical seat and can prevent deformation of the tube 2.
第８図乃至第１０図は本発明の他実施例を示す断面図で
、前記第４図に示した実施例とは内張り材５がない点を
除いて同様である。作用、効果においても同様なので同
一部分に同一符号を付して説明は省略する。8 to 10 are sectional views showing another embodiment of the present invention, which is the same as the embodiment shown in FIG. 4 except that the lining material 5 is not provided. Since the functions and effects are also similar, the same parts are given the same reference numerals and the explanation will be omitted.
第１１図乃至第１３図も本発明の他実施例を示す断面図
である０本実施例では凸曲面部８が鏡部１を突設させて
一体成形したものである。前記実施例と球面座のバネ性
を除いた他の点においては作用、効果において同様であ
る。予じめ凸曲面部８が鋭部１に一体成形されているた
め、溶接作業は管２と凸曲面部８との溶接部７の一ケ所
で済むという効果が得られる。FIGS. 11 to 13 are also cross-sectional views showing other embodiments of the present invention. In this embodiment, the convex curved portion 8 is integrally formed with the mirror portion 1 protruding therefrom. The operation and effect are the same as in the previous embodiment except for the springiness of the spherical seat. Since the convex curved surface part 8 is integrally molded with the sharp part 1 in advance, the effect is obtained that welding work only needs to be done at one location, the welding part 7 between the pipe 2 and the convex curved surface part 8.
第１４図及び第１５図も本発明の他実施例を示すもので
あるが、前記実施例はいずれも凸曲面部８を鏡部１の内
面に設けたものであるのに対し、本実施例は鏡部１の外
面に凸曲面部８を設けたものである。作用、効果におい
ては前記実施例と同様であるが、管２と凸曲面部８との
溶接作業が鏡部１の外面であることによって、より簡単
となるという効果が得られる。FIG. 14 and FIG. 15 also show other embodiments of the present invention, but while in the above embodiments the convex curved surface portion 8 is provided on the inner surface of the mirror portion 1, in this embodiment A convex curved surface portion 8 is provided on the outer surface of the mirror portion 1. Although the operation and effect are similar to those of the previous embodiment, the welding work between the tube 2 and the convex curved surface section 8 is performed on the outer surface of the mirror section 1, so that an effect is obtained in that the welding operation is made easier.
本発明によれば、鏡部の管貫通位置に凸曲面部を突設し
、該凸曲面部の開口周縁と前記管とを溶接するようにし
たので、溶接部分の構造が込み入った三次元構造ではな
く、管に対して凸曲面部が離反する（逃げる）開放的な
構造となるため、以下の効果が得られる。According to the present invention, the convex curved surface is provided protrudingly at the pipe penetration position of the mirror part, and the opening periphery of the convex curved surface is welded to the pipe, so that the structure of the welded part is complicated three-dimensional structure. Rather, the convex curved surface portion separates (escapes) from the tube, resulting in an open structure, resulting in the following effects.
（１） 溶接部分の形状が単純化され、溶接がしやす
い。(1) The shape of the welded part is simplified, making it easier to weld.
（２） 自動溶接化が可能で溶接作業の効率化を図れ
る。(2) Automatic welding is possible, making welding work more efficient.
（３）溶接部の溶着量が少なく済み、低コスト化を図れ
る。(3) The amount of welding at the welded portion can be reduced, resulting in cost reduction.
第１図乃至第３図は本発明のそれぞれ異なる実施例の概
略構成図、第４図は本発明の一実施例を示す要部断面図
、第５図は第４図の■−Ｖ線断面図、第６図及び第７図
はそれぞれ第５図の■、■部の拡大図を示し、第８図は
本発明の他実施例を示す要部断面図、第９図及び第１０
図はそれぞれ第８図の■、Ｘ部の拡大図を示し、第１１
図も本発明の他実施例を示す要部断ｌｌｌ１図、第１２
図及び第１３図はそれぞれ第１１図の店、ｘｔ部の拡大
図を示し、第１４図及び第１５図もそれぞれ異なる実施
例を示す断面図であり、第１６図は容器の全体を示す概
略断面図、第１７図は同容器の横断面図、第１８図は同
容器の要部拡大図、第１９図は従来例の要部断面図、第
２０図及び第２１図はそれぞれ第１９図のＸＸ、ＸＸ１
部の拡大図を示し。
第２２図は異なる従来例の要部断面図、第２３図及び第
２４図はそれぞれ第２２図のｘｘｔｕ、ｘｘ■部の拡大
図を示す。
１・・・鏡部、２・・・管、８・・・凸曲面部。1 to 3 are schematic configuration diagrams of different embodiments of the present invention, FIG. 4 is a cross-sectional view of essential parts showing one embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along the line ■-V in FIG. 4. Figures 6 and 7 are enlarged views of sections ■ and ■ in Figure 5, respectively, and Figure 8 is a cross-sectional view of main parts showing another embodiment of the present invention, and Figures 9 and 10.
The figures show enlarged views of parts ■ and X in Fig. 8, respectively, and
The figures also show main part cross-sections 11 and 12 showing other embodiments of the present invention.
14 and 15 are sectional views showing different embodiments, and FIG. 16 is a schematic diagram showing the entire container. 17 is a cross-sectional view of the same container, FIG. 18 is an enlarged view of the main part of the same container, FIG. 19 is a sectional view of the main part of the conventional example, and FIGS. 20 and 21 are respectively FIG. XX, XX1
An enlarged view of the section is shown. FIG. 22 is a sectional view of a main part of a different conventional example, and FIGS. 23 and 24 are enlarged views of sections xxtu and xx■ in FIG. 22, respectively. 1...Mirror part, 2...Pipe, 8...Convex curved surface part.
Claims (4)
取り付けられている容器鏡部における管取付構造におい
て、前記鏡部の管貫通位置に凸曲面部を突設し、該凸曲
面部の開口周縁と前記管とを溶接したことを特徴とする
容器鏡部における管取付構造。(1) In a tube mounting structure in a container mirror section in which a tube is attached to a spherical mirror section of the container by penetrating the container, a convex curved section is provided protrudingly at a pipe penetration position of the mirror section, and the convex A tube mounting structure in a container mirror section, characterized in that the opening periphery of the curved surface section and the tube are welded.
の球面座にて形成した容器鏡部における管取付構造。(2) A tube mounting structure in a container mirror according to claim 1, in which the convex curved surface portion is formed by a hollow spherical seat.
面部を、その曲率中心位置を前記管の軸線上に位置させ
て形成した容器鏡部における管取付構造。(3) A tube mounting structure in a container mirror according to claim 1 or 2, wherein the convex curved surface portion is formed with its center of curvature located on the axis of the tube.
部を、その曲率中心位置を前記管の軸線上で且つ鏡部表
面上に位置させて形成した容器鏡部における管取付構造
。(4) A tube mounting structure for a container mirror according to claim 1 or 2, wherein the convex curved surface portion is formed with its center of curvature located on the axis of the tube and on the surface of the mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61106472A JPH0661619B2 (en) | 1986-05-09 | 1986-05-09 | Pipe mounting structure for container mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61106472A JPH0661619B2 (en) | 1986-05-09 | 1986-05-09 | Pipe mounting structure for container mirror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62263871A true JPS62263871A (en) | 1987-11-16 |
| JPH0661619B2 JPH0661619B2 (en) | 1994-08-17 |
Family
ID=14434465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61106472A Expired - Fee Related JPH0661619B2 (en) | 1986-05-09 | 1986-05-09 | Pipe mounting structure for container mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0661619B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010038876A1 (en) * | 2008-10-03 | 2010-04-08 | 株式会社東芝 | Method of repairing bottom section of nuclear reactor |
| WO2013150750A1 (en) * | 2012-04-03 | 2013-10-10 | 株式会社 東芝 | Structure for protecting penetrating part of reactor pressure vessel, and reactor |
| CN106881539A (en) * | 2017-03-31 | 2017-06-23 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of pressure vessel |
| CN107393615A (en) * | 2017-07-31 | 2017-11-24 | 中国船舶重工集团公司第七〇九研究所 | Command bundle rods for nuclear reactors drive mechanism pressure hull sealing welding servicing unit |
| CN109237133A (en) * | 2018-09-12 | 2019-01-18 | 上海宝冶工程技术有限公司 | A kind of high temperature corrosion medium drainage device based on welded corner joint |
| CN112932311A (en) * | 2021-04-08 | 2021-06-11 | 吉博力国际股份公司 | Seamless welded toilet seat |
-
1986
- 1986-05-09 JP JP61106472A patent/JPH0661619B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010038876A1 (en) * | 2008-10-03 | 2010-04-08 | 株式会社東芝 | Method of repairing bottom section of nuclear reactor |
| JP5570995B2 (en) * | 2008-10-03 | 2014-08-13 | 株式会社東芝 | Reactor bottom repair method |
| US9136026B2 (en) | 2008-10-03 | 2015-09-15 | Kabushiki Kaisha Toshiba | Reactor bottom repairing method |
| WO2013150750A1 (en) * | 2012-04-03 | 2013-10-10 | 株式会社 東芝 | Structure for protecting penetrating part of reactor pressure vessel, and reactor |
| CN106881539A (en) * | 2017-03-31 | 2017-06-23 | 哈电集团（秦皇岛）重型装备有限公司 | A kind of pressure vessel |
| CN106881539B (en) * | 2017-03-31 | 2022-09-09 | 哈电集团（秦皇岛）重型装备有限公司 | Pressure container |
| CN107393615A (en) * | 2017-07-31 | 2017-11-24 | 中国船舶重工集团公司第七〇九研究所 | Command bundle rods for nuclear reactors drive mechanism pressure hull sealing welding servicing unit |
| CN107393615B (en) * | 2017-07-31 | 2023-04-25 | 中国船舶重工集团公司第七一九研究所 | Auxiliary device for sealing and welding pressure-resistant shell of nuclear reactor control rod driving mechanism |
| CN109237133A (en) * | 2018-09-12 | 2019-01-18 | 上海宝冶工程技术有限公司 | A kind of high temperature corrosion medium drainage device based on welded corner joint |
| CN112932311A (en) * | 2021-04-08 | 2021-06-11 | 吉博力国际股份公司 | Seamless welded toilet seat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0661619B2 (en) | 1994-08-17 |
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| LAPS | Cancellation because of no payment of annual fees |