JPH0129346Y2 - - Google Patents
Info
- Publication number
- JPH0129346Y2 JPH0129346Y2 JP1982046978U JP4697882U JPH0129346Y2 JP H0129346 Y2 JPH0129346 Y2 JP H0129346Y2 JP 1982046978 U JP1982046978 U JP 1982046978U JP 4697882 U JP4697882 U JP 4697882U JP H0129346 Y2 JPH0129346 Y2 JP H0129346Y2
- Authority
- JP
- Japan
- Prior art keywords
- support member
- pipe
- inner tube
- leg
- tube
- 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
Links
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000035515 penetration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003466 welding Methods 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
Description
【考案の詳細な説明】
本考案は、原子炉格納容器の配管貫通部に用い
られる二重管の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a double pipe used in a piping penetration part of a nuclear reactor containment vessel.
従来のこの種の二重管は、通常、第１図乃至第
３図に示すように構成されている。すなわち、従
来の二重管は、それらの図に示すように内管p1の
外周面の適所に上部支持板０１を、また該上部支
持板０１の反対側における内管の外周面に、開脚
状の下部支持部材０２をそれぞれ溶接し、該内管
p1をそれら上下の支持部材０１，０２を介して外
管p2内に同軸的に挿入した構成となつている。 A conventional double pipe of this type is usually constructed as shown in FIGS. 1 to 3. That is, as shown in those figures, the conventional double pipe has an upper support plate 01 at a suitable location on the outer peripheral surface of the inner pipe p1 , and an opening on the outer peripheral surface of the inner pipe on the opposite side of the upper support plate 01. The leg-shaped lower support members 02 are welded to each other, and the inner tube is
P 1 is coaxially inserted into outer tube p 2 via upper and lower support members 01 and 02.
この場合、第２図及び第３図に示すように、こ
の種の二重管では、外管p2の内周面と上部支持部
材０１との間に、設計数値以下に抑えられたスキ
マａが形成される要があり、そのため、該スキマ
ａの寸法が設計数値通りになつているか否かを確
認する必要があるが、上記従来の二重管の構造で
は、該スキマａ寸法を確認できないという欠点が
あつた。また外管p2の長さが、原子炉格納容器の
配管貫通部のように、約10ｍに及ぶように長い場
合には、各部材の製作誤差の関係で、上下の支持
部材０１，０２とともに内管p1を、外管p2内に挿
入することが極めて困難で、現地据付の段階で、
上下の支持部材０１，０２の削加工等の余分な調
整作業を行なわなければならないという不具合点
が従来の二重管にはあつた。 In this case, as shown in FIGS. 2 and 3, in this type of double pipe, there is a gap a that is kept below the design value between the inner circumferential surface of the outer pipe p 2 and the upper support member 01. Therefore, it is necessary to confirm whether the dimensions of the gap a are as per the design values, but with the conventional double pipe structure described above, the dimension of the gap a cannot be confirmed. There was a drawback. In addition, if the length of the outer pipe p2 is as long as approximately 10 m, such as the pipe penetration part of the reactor containment vessel, due to manufacturing errors of each member, it may be necessary to It was extremely difficult to insert the inner pipe p 1 into the outer pipe p 2 , and during the on-site installation stage,
The conventional double pipe has the disadvantage that extra adjustment work such as machining of the upper and lower support members 01 and 02 must be performed.
本考案は、上記従来の二重管の欠点や不具合点
を解消し、上記スキマ寸法の確認が容易で、しか
も外管内への内管の挿入の容易な二重管を提供す
ることを目的として提案されたもので、外周面の
適所に、開脚状支持部材を固着された内管と、同
内管の外側を囲み、該内管に上記開脚状支持部材
を介して支持されて、同軸的に延びる外管と、同
外管の上記開脚状支持部材の内管への取付個所の
反対側に設けられた貫通孔部に装着され、先端
が、内管の外周面に取付られた当て板に当接可能
で、かつ長さ調節可能な上部支持部材とを具備し
てなることを特徴とする二重管に係るものであ
る。 The purpose of this invention is to eliminate the drawbacks and inconveniences of the conventional double pipe described above, and to provide a double pipe in which the clearance dimensions described above can be easily confirmed and the inner pipe can be easily inserted into the outer pipe. The proposed method includes an inner tube having a leg-shaped supporting member fixed to a proper position on the outer circumferential surface, and surrounding the outside of the inner tube, and being supported by the inner tube via the leg-shaped supporting member, The outer pipe extends coaxially, and the leg-shaped support member of the outer pipe is attached to a through hole provided on the opposite side of the attachment point to the inner pipe, and the tip is attached to the outer circumferential surface of the inner pipe. The present invention relates to a double pipe characterized in that it includes an upper support member that can come into contact with a backing plate and whose length can be adjusted.
以下、第４図乃至第７図に示す実施例により、
本考案につき具体的に説明する。 Hereinafter, according to the embodiments shown in FIGS. 4 to 7,
The present invention will be explained in detail.
第４図において、p1は内管、P2は外管で、内管
p1は上部支持部材S1と、開脚状の公知の下部支持
部材S2を介して外管p2内に挿入されて二重管を形
成している。開脚部の下部支持部材S2は、上記従
来の二重管の開脚状下部支持部材と同様に、受座
Ｓを介して内管p1の外周面上の適所に固着されて
いる。（第５図、第６図参照）１は第７図に示す
如く上記開脚状下部支持部材S2の内管p1への取付
個所の反対側における外管p2に穿設された貫通
孔、２は該貫通孔１の外周縁部に第７図に示す如
く溶接された管台、３は上端にフランジ３ａを有
し、該管台２内に摺動自在に挿入可能なプラグ、
４は上端雄ねじ部４ａを、上記プラグ３に図示の
如く設けられた雌ねじ部にねじ込まれた支持ボル
トで、同支持ボルト４には廻り止めナツト５が図
示の如くねじ込まれている。そして、それらプラ
グ３、支持ボルト４及び廻り止めナツト５等で、
長さ調節自在な上記支持部材S1を形成している。 In Figure 4, p 1 is the inner tube, P 2 is the outer tube, and the inner tube
p 1 is inserted into the outer tube p 2 via an upper support member S 1 and a known lower support member S 2 in the form of open legs, forming a double tube. The lower support member S 2 of the open leg portion is fixed to a proper position on the outer circumferential surface of the inner tube p 1 via the seat S, similar to the above-mentioned conventional open leg-like lower support member of the double pipe. (See Figures 5 and 6) 1 is a through hole drilled in the outer pipe p 2 on the opposite side of the attachment point of the split-legged lower support member S 2 to the inner pipe p 1 as shown in Fig. 7. a hole, 2 is a nozzle holder welded to the outer peripheral edge of the through hole 1 as shown in FIG. 7; 3 is a plug having a flange 3a at the upper end and slidably insertable into the nozzle holder 2;
Reference numeral 4 denotes a support bolt whose upper end male threaded portion 4a is screwed into a female threaded portion provided on the plug 3 as shown in the figure, and a rotation stopper nut 5 is screwed into the support bolt 4 as shown in the figure. Then, with the plug 3, support bolt 4, rotation stopper nut 5, etc.,
The support member S1 is formed so that its length can be freely adjusted.
本考案の二重管は、上記構成の上部支持部材S1
と、公知の開脚状下部支持部材S2を介して外管p2
内に内管p1を挿入された二重管構造を特徴とする
ものである。 The double pipe of the present invention has an upper support member S1 with the above configuration.
and an outer tube p 2 via a known leg-like lower support member S 2
It is characterized by a double tube structure with an inner tube p1 inserted inside.
本考案の二重管の一実施例は、上記のように構
成されており、内管p1を外管p2内に挿入して二重
管を形成する場合は、従来同様に、予かじめ外周
面の所定の個所に開脚状の下部支持部材S2を固着
された内管p1を、外周壁の所定の個所に貫通孔１
を穿設され、かつ該貫通孔１の周縁部外側に管台
２を予かじめ溶接された外管p2内に挿入するが、
この場合、上部支持部材S1は末だ装着されていな
いので、内管p1の外管p2内への挿入作業は極めて
容易である。つぎに、上端にプラグ３をねじ込ん
だ支持ボルト４を、上記管台２を介して外管P2
に挿入し、下端を内管p1の外周面の所定個所に取
付けられた当て板６上面に当接させたときの管台
２の上端から当て板６上面間の長さ寸法l1を、プ
ラグ３の外側にマークを付けるなどの手段によつ
て計側する。つぎにプラグ３と支持ボルト４の組
合せた長さ寸法l2をセツトするが、該寸法l2は、
l1−ａ＋ｂによつて容易に求めることができる。
ただしａは当て板６と支持ボルト４の下端面間の
スキマ寸法ｂは管台２の上端と、プラグ３のフラ
ンジ３ａ間の間隔をそれぞれ示す。この場合、支
持ボルト４とプラグ３の螺合部の長さを適宜調整
することにより、スキマ寸法ａが設計数値以下に
確保されているか否かを確認したのち、廻り止め
ナツト５をスポツト溶接等で固定し、再びプラグ
３、支持ボルト４、廻り止めナツト５等からなる
上部支持部材S1を管台２を介して外管p2内へ挿入
し、上記ｂ寸法が確保されるように、上部支持部
材S1の位置決めし、管台２とプラグ３のフランジ
３ａとを溶接して、該上部支持部材S1と開脚状下
部支持部材S2を介しての内管p1からなる二重管が
形成される。 One embodiment of the double pipe of the present invention is constructed as described above, and when forming a double pipe by inserting the inner pipe p 1 into the outer pipe p 2 , the double pipe is pre-screwed as in the conventional case. The inner tube p 1 has a leg-shaped lower support member S 2 fixed to a predetermined location on the outer circumferential surface, and the through hole 1 is attached to a predetermined location on the outer circumferential wall.
The nozzle 2 is inserted into the outer tube p 2 which is drilled and the nozzle 2 is welded in advance on the outside of the peripheral edge of the through hole 1.
In this case, since the upper support member S1 is not attached at the end, it is extremely easy to insert the inner tube p1 into the outer tube p2 . Next, the support bolt 4 with the plug 3 screwed into the upper end is connected to the outer pipe P 2 through the nozzle stub 2 .
The length dimension l 1 between the upper end of the nozzle holder 2 and the upper surface of the backing plate 6 when the lower end is brought into contact with the upper surface of the backing plate 6 attached to a predetermined location on the outer peripheral surface of the inner pipe p 1 is, The side is measured by means such as marking the outside of the plug 3. Next, the combined length dimension l 2 of the plug 3 and support bolt 4 is set, and this dimension l 2 is
It can be easily determined by l 1 −a+b.
However, a indicates the clearance dimension between the backing plate 6 and the lower end surface of the support bolt 4, and b indicates the interval between the upper end of the nozzle stub 2 and the flange 3a of the plug 3, respectively. In this case, after confirming whether the clearance dimension a is secured below the design value by adjusting the length of the threaded part of the support bolt 4 and the plug 3 as appropriate, the rotation stopper nut 5 is fixed by spot welding, etc. and insert the upper support member S1 consisting of the plug 3, support bolt 4, rotation stopper nut 5, etc. into the outer pipe p2 via the nozzle holder 2 , so that the above dimension b is secured. The upper support member S 1 is positioned, the nozzle holder 2 and the flange 3a of the plug 3 are welded, and the inner pipe p 1 is inserted through the upper support member S 1 and the leg-like lower support member S 2 . Heavy pipes are formed.
本考案の二重管は、上記のような構成作用を具
有するものであるから、本考案によれば、上記従
来の二重管の欠点や不具合点を解消した二重管を
実現できるという実用的効果を挙げることができ
る。 Since the double pipe of the present invention has the above-mentioned structural action, the present invention has practical advantages in that it is possible to realize a double pipe that eliminates the drawbacks and problems of the conventional double pipe. This can have a positive effect.
第１図乃至第３図は、従来の二重管の略示的説
明図で、第１図は縦断面図、第２図は第１図のＡ
−Ａ線断面図、第３図は第２図のＢ−Ｂ線断面
図、第４図乃至第７図は本考案の一実施例の概略
説明図で、第４図は縦断面図、第５図は第４図の
Ｃ−Ｃ線断面図、第６図は第５図のＤ−Ｄ線断面
図、第７図は上部支持部材の詳細図で、左半部は
円周方向断面図、右半部は軸方向の断面図であ
る。
第４図乃至第７図において、P1……内管、P2
……外管、ａ……スキマ寸法、S1……上部支持部
材、S2……開脚状下部支持部材、１……貫通孔、
２……管台、３……プラグ、４……支持ボルト、
５……廻り止めナツト、６……当て板。
1 to 3 are schematic explanatory diagrams of a conventional double pipe, where FIG. 1 is a longitudinal sectional view and FIG. 2 is a
3 is a sectional view taken along line B-B in FIG. 2, FIGS. 4 to 7 are schematic illustrations of an embodiment of the present invention, and FIG. Figure 5 is a cross-sectional view taken along the line CC in Figure 4, Figure 6 is a cross-sectional view taken along line D-D in Figure 5, Figure 7 is a detailed view of the upper support member, and the left half is a cross-sectional view in the circumferential direction. , the right half is an axial cross-sectional view. In Figures 4 to 7, P 1 ...inner pipe, P 2
... Outer pipe, a ... Clearance dimension, S 1 ... Upper support member, S 2 ... Leg-shaped lower support member, 1 ... Through hole,
2...Nozzle stand, 3...Plug, 4...Support bolt,
5... Rotating nut, 6... Backing plate.
Claims (1)
内管と、同内管の外側を囲み、該内管に上記開脚
状支持部材を介して支持されて、同軸的に延びる
外管と、同外管の上記開脚状支持部材の内管への
取付個所の反対側に設けられた貫通孔部に装着さ
れ、先端が、内管の外周面に取付られた当て板に
当接可能で、かつ長さ調節可能な上部支持部材と
を具備してなることを特徴とする二重管。 an inner tube having a leg-shaped support member fixed to a proper position on its outer peripheral surface; and an outer tube surrounding the inner tube, supported by the inner tube via the leg-shaped support member, and extending coaxially. and is attached to the through hole provided on the opposite side of the outer tube from where the leg-like support member is attached to the inner tube, and the tip abuts against the backing plate attached to the outer circumferential surface of the inner tube. and a length-adjustable upper support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982046978U JPS58153397U (en) | 1982-04-02 | 1982-04-02 | double tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982046978U JPS58153397U (en) | 1982-04-02 | 1982-04-02 | double tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58153397U JPS58153397U (en) | 1983-10-13 |
| JPH0129346Y2 true JPH0129346Y2 (en) | 1989-09-06 |
Family
ID=30057956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982046978U Granted JPS58153397U (en) | 1982-04-02 | 1982-04-02 | double tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58153397U (en) |
-
1982
- 1982-04-02 JP JP1982046978U patent/JPS58153397U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58153397U (en) | 1983-10-13 |
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