JPH01216194A - Dissimilar material connecting joint with airtight joint therein - Google Patents
Dissimilar material connecting joint with airtight joint thereinInfo
- Publication number
- JPH01216194A JPH01216194A JP3762688A JP3762688A JPH01216194A JP H01216194 A JPH01216194 A JP H01216194A JP 3762688 A JP3762688 A JP 3762688A JP 3762688 A JP3762688 A JP 3762688A JP H01216194 A JPH01216194 A JP H01216194A
- Authority
- JP
- Japan
- Prior art keywords
- joint
- dissimilar material
- airtight
- dissimilar
- gasket
- 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
- 239000000463 material Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000005304 joining Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 206010040844 Skin exfoliation Diseases 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Joints With Pressure Members (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は配管技術の分野に属する。すなわち、異なる材
料を直接接合して成る異種材料接合継手（以下異材継手
という）に関し、この接合部分が金属ガスケットを用い
た継手によって気密に補強されている異材継手に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention belongs to the field of piping technology. That is, it relates to a dissimilar material joint (hereinafter referred to as a dissimilar material joint) formed by directly joining different materials, and a dissimilar material joint in which the joined portion is airtightly reinforced by a joint using a metal gasket.
（従来の技術）
従来、プラント等のシステムの一部として使用する配管
等においては、使用雰囲気、使用温度、使用流体等の使
用環境を考慮し、その目的に合致した材料を選定するこ
とによってシステム全体が所要の性能を発揮するように
設計される。そしてこの要求を厳密に満足するためには
、つまり高い性能を発揮させるためには用途に適した最
も特性の優れた材料を選択して設計を行わなければなら
ない。(Prior art) Conventionally, for piping, etc. used as part of a system such as a plant, the system is constructed by considering the usage environment such as the usage atmosphere, usage temperature, and usage fluid, and selecting materials that match the purpose. The entire system is designed to provide the required performance. In order to strictly satisfy this requirement, that is, to exhibit high performance, it is necessary to select and design materials with the best characteristics suitable for the application.
しかしながら、実際の施工に際しては、特性の優れた材
料が施工の容易な材料とは限らず、施工上の制約によっ
て材料の選択が制約される場合が多い。However, in actual construction, materials with excellent properties are not necessarily materials that are easy to construct, and the selection of materials is often restricted by construction constraints.
かかる問題を解決する一つの方法としては、現在、特性
の優れた材料と施工の容易な材料が組み合わされて、途
中で冶金的に接合された異材継手が開発され、設計およ
び施工上の相反する要求を同時に解決している。かかる
異材継手の応用例としては、原子炉において各種の試料
を放射線照射する気密照射容器を挙げることができる。One way to solve this problem is to develop dissimilar metal joints that combine materials with excellent properties and materials that are easy to construct, and are metallurgically joined in the middle. Resolving requests simultaneously. An example of the application of such a dissimilar material joint is an airtight irradiation container in which various samples are irradiated with radiation in a nuclear reactor.
該気密照射容器においては、放射線被照射部分における
中性子の構造部材での吸収を少くするために、該構造部
材としてアルミニウムを用い、内部に挿入した熱電対等
の計装線を気密に溶封するためには、該計装線のシース
がステンレス鋼であるため、この部分（溶封位置）の構
造部材にステンレス鋼を用いているが、この両金属を制
限された寸法で、しかも耐放射線性のある材料で気密に
固着するという使用上の要求により、両金属の変換部分
には前述の異材継手が用いられている。In the airtight irradiation container, in order to reduce absorption of neutrons by structural members in the radiation irradiated area, aluminum is used as the structural member, and instrumentation wires such as thermocouples inserted inside the container are hermetically sealed. Since the sheath of the instrumentation wire is stainless steel, stainless steel is used for the structural members of this part (sealing position). Due to the usage requirement of air-tight fixation of a certain material, the aforementioned dissimilar material joint is used for the conversion part of both metals.
（発明が解決しようとする問題点）
一方、気密照射容器に用いる異材継手は、直接原子炉−
次冷却水の流動中にさらされ、冷却水の流動による振動
を受ける。また原子炉および照射装置の形式によっては
気密照射容器を上部より炉心中に吊り下げて照射する場
合があり、この場合には、流水による振動の他に、気密
照射容器自身の重量も荷重として該異材継手に加わるた
め接合面は極めて過酷な条件下におかれることとなる。(Problems to be Solved by the Invention) On the other hand, dissimilar metal joints used in airtight irradiation vessels are directly connected to the reactor.
Next, it is exposed to the flow of cooling water and subjected to vibrations caused by the flow of cooling water. Also, depending on the type of reactor and irradiation equipment, the airtight irradiation container may be suspended from above into the reactor core for irradiation, and in this case, in addition to vibrations caused by running water, the weight of the airtight irradiation container itself is also considered as a load. Since it is applied to a joint of dissimilar materials, the joint surfaces are subjected to extremely harsh conditions.
このような条件下では、異材継手の接合面に剥離が発生
する恐れがあり、この剥離が発生すると気密照射容器の
気密が破れ、照射容器内に冷却水が侵入し、内部の構造
材と反応して照射容器を破損に到らしめることとなる。Under these conditions, there is a risk of peeling at the joint surfaces of dissimilar metal joints, and when this peeling occurs, the airtightness of the airtight irradiation container is broken, cooling water enters the irradiation container, and reacts with the internal structural materials. This can lead to damage to the irradiation container.
（問題点を解決するための手段）
本発明は、異材継手に気密継手を組み合わせることによ
って、異種材料接合面に剥離が発生した場合においても
気密を保持することを目的として発明されたものである
。(Means for Solving the Problems) The present invention was invented for the purpose of maintaining airtightness even when peeling occurs at the joint surface of dissimilar materials by combining an airtight joint with a dissimilar material joint. .
すなわち、本発明は、筒状をなす異材継手の一方の材料
の内部に公知のコーンフラットフランジが有するエツジ
と同様のエツジを存し、これに筒状の該継手に嵌合して
前述のエツジと同様のエツジを有するフランジによって
、金属ガスケットが押し潰される気密構造において、そ
の金属ガスケットが短管付フランジの形状を有し、その
短管は肉厚が異材継手の肉厚より薄く、端部が異材継手
の他方の材料に気密に溶封されていることを特徴とする
異材継手である。That is, the present invention has an edge similar to that of a known cone flat flange inside one of the materials of a cylindrical dissimilar material joint, and the above-mentioned edge is fitted into the cylindrical joint. In an airtight structure in which a metal gasket is crushed by a flange having an edge similar to that of This is a dissimilar material joint characterized in that the material is hermetically sealed to the other material of the dissimilar material joint.
（実施例）
本発明を実施例について図面によって具体的に説明する
。(Example) The present invention will be specifically described with reference to the drawings.
第１図において筒状の異材継手１の内壁に、筒端面を向
いてエツジが設けられたコーンフラットフランジ部２に
、その肉厚が異材継手の肉厚より薄い短管のついた金属
ガスケット５が嵌合され、該ガスケット５が異材継手１
に嵌合されたコーンフラットフランジ３によって締付ネ
ジ４の作用を受け、押し潰されることによって気密継手
を構成し、さらにガスケット５が異材継手１′の溶接部
６において該異材継手１”に溶接される構造をなす。In FIG. 1, a metal gasket 5 is attached to a cone flat flange portion 2, which has an edge facing toward the end surface of the cylinder, on the inner wall of a cylindrical dissimilar material joint 1, and has a short pipe whose wall thickness is thinner than that of the dissimilar material joint. are fitted, and the gasket 5 is connected to the dissimilar material joint 1.
The cone flat flange 3 fitted into the cone flat flange 3 is crushed under the action of the tightening screw 4 to form an airtight joint, and the gasket 5 is welded to the dissimilar metal joint 1'' at the welding part 6 of the dissimilar metal joint 1'. form the structure that will be used.
（効果）
かかる構成を有する本発明に依れば、コーンフラットフ
ランジとガスケットを用いた気密構造、及び該ガスケッ
トと異材継手の溶接によって、該異材継手の接合部を気
密に保護することができる。(Effects) According to the present invention having such a configuration, the joint portion of the dissimilar material joint can be hermetically protected by the airtight structure using the cone flat flange and the gasket, and by welding the gasket and the dissimilar material joint.
また、ガスケットの短管部肉厚が異材継手肉厚より薄い
ため、ガスケットの熱容量が異材継手より小さく、溶接
時の入熱による溶込量が異材継手よりも大きいために凝
固時の軸方向の収縮量も大きく、この結果異材継手には
押圧が作用し、この反力によってコーンフラットフラン
ジとガスケットを用いた気密構造の気密保持効果を更に
高めるため、信頼性の高い異材継手の製作が可能となっ
た。In addition, because the wall thickness of the short pipe part of the gasket is thinner than that of a dissimilar metal joint, the heat capacity of the gasket is smaller than that of a dissimilar metal joint, and the amount of penetration due to heat input during welding is greater than that of a dissimilar metal joint, so the axial direction during solidification is The amount of shrinkage is also large, and as a result, pressure acts on the dissimilar material joint, and this reaction force further enhances the airtightness of the airtight structure using the cone flat flange and gasket, making it possible to manufacture highly reliable dissimilar material joints. became.
第１図は本発明の実施例における具体例の断面図を示す
。 本発明の実施例について説明す図において、
１ 異材継手、
１゛異材継手のステンレスの部分、
１”異材継手のアルミニウム部分、
２ 異材継手のコーンフラットフランジ部、３ ステン
レス鋼製のコーンフラットフランジ、４ 締付ネジ、
５ アルミニウム製のガスケット、
６ ガスケットと異社継手の溶接部
である。FIG. 1 shows a sectional view of a specific example of an embodiment of the present invention. In the drawings explaining the embodiments of the present invention, 1 dissimilar metal joint, 1゛ stainless steel part of dissimilar metal joint, 1" aluminum part of dissimilar metal joint, 2 cone flat flange part of dissimilar metal joint, 3 cone flat flange made of stainless steel, 4. Tightening screw, 5. Aluminum gasket, 6. Welded part of gasket and joint from another company.
Claims (1)
接接合して円筒状に成形した異種材料接合継手の一方の
材料の内部に、公知のコーンフラットフランジの有する
エッジと同様のエッジを該継手端へ向けて設け、これに
嵌合されるコーンフラットフランジによって金属ガスケ
ットが押し潰される気密構造において、その金属ガスケ
ットが短管付フランジの形状を有し、該短管の肉厚が異
材継手の肉厚より薄く、端部が異材継手の他方の材料に
気密に溶接されていることを特徴とする異種材料接合継
手。An edge similar to the edge of a known cone flat flange is provided inside one of the materials of a dissimilar material joining joint in which two different rod-shaped materials are directly joined in the axial direction using an appropriate method and formed into a cylindrical shape. In an airtight structure in which a metal gasket is crushed by a cone flat flange provided toward the end of the joint and fitted into the cone flat flange, the metal gasket has the shape of a flange with a short pipe, and the short pipe has a different wall thickness. A dissimilar material joining joint characterized in that it is thinner than the wall thickness of the joint, and the end portion is hermetically welded to the other material of the dissimilar material joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762688A JP2631682B2 (en) | 1988-02-22 | 1988-02-22 | Dissimilar material joint with airtight joint inside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3762688A JP2631682B2 (en) | 1988-02-22 | 1988-02-22 | Dissimilar material joint with airtight joint inside |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01216194A true JPH01216194A (en) | 1989-08-30 |
| JP2631682B2 JP2631682B2 (en) | 1997-07-16 |
Family
ID=12502845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3762688A Expired - Lifetime JP2631682B2 (en) | 1988-02-22 | 1988-02-22 | Dissimilar material joint with airtight joint inside |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2631682B2 (en) |
-
1988
- 1988-02-22 JP JP3762688A patent/JP2631682B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2631682B2 (en) | 1997-07-16 |
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