JPS6253074B2 - - Google Patents
Info
- Publication number
- JPS6253074B2 JPS6253074B2 JP57209341A JP20934182A JPS6253074B2 JP S6253074 B2 JPS6253074 B2 JP S6253074B2 JP 57209341 A JP57209341 A JP 57209341A JP 20934182 A JP20934182 A JP 20934182A JP S6253074 B2 JPS6253074 B2 JP S6253074B2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- metal
- cylindrical
- joint
- flange portion
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 37
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 description 12
- 230000035882 stress Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 238000005219 brazing Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 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
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Cable Accessories (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】
本発明は絶縁フランジ継手に係り、例えば核融
合装置の真空排気ポートと真空排気装置との接合
部に使用するに好適な絶縁フランジ継手に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an insulating flange joint, and relates to an insulating flange joint suitable for use, for example, at a joint between a vacuum exhaust port and a vacuum exhaust device of a nuclear fusion device.
例えばトカマク型核融合装置においては、プラ
ズマを真空容器内に安定に閉じ込めるために高磁
場が利用される。この高磁場を形成するため、ト
ーラス形状の容器の囲りに互い直交する二種の磁
場コイル、すなわち、トロイダル磁場コイル及び
ポロイダル磁場コイルが配置されている。 For example, in a tokamak type nuclear fusion device, a high magnetic field is used to stably confine plasma within a vacuum vessel. In order to form this high magnetic field, two types of magnetic field coils, ie, a toroidal magnetic field coil and a poloidal magnetic field coil, are arranged at right angles to each other around the torus-shaped container.
これらコイル磁場により容器内に閉じ込められ
るプラズマは、核融合を生ぜしめるために、高温
で高密度なることが要求される。このため容器内
では、核融合燃料以外の不純物を排気する必要が
あり、容器のベーキングを行い容器内壁から不純
物を出し、さらに容器内の気体を真空排気し、プ
ラズマ中への不純物混入を避けている。 The plasma confined within the container by these coil magnetic fields is required to have high temperature and high density in order to cause nuclear fusion. For this reason, it is necessary to exhaust impurities other than the fusion fuel inside the vessel, so the vessel is baked to remove impurities from the inner wall of the vessel, and the gas inside the vessel is evacuated to avoid contamination of the plasma with impurities. There is.
ところで、容器側の排気ポートから出る排気管
と排気ポンプ側マンホールドの結合部では、高磁
場にある排気管の誘導電流を絶縁しかつ、ベーキ
ング時の高温環境下の熱変形の結合部への集中を
避けることが必要とされる。従来、第１図に示す
ようにこの結合部では、円筒状のアルミナセラミ
ツクス２の軸方向表面の一部に施されたメタライ
ズ層４に一端が接続され、このアルミナセラミツ
クス２と線膨張率が同程度の円板状の鍔を接合金
属３とし、これを円筒状金属部材のフランジ部１
にろう付け部５でろう付けしたフランジ継手を用
いて、絶縁と同時に排気管との結合を行つてい
る。 By the way, at the joint between the exhaust pipe exiting from the exhaust port on the container side and the manhold on the exhaust pump side, it is necessary to insulate the induced current in the exhaust pipe which is in a high magnetic field, and to prevent thermal deformation to the joint part in the high temperature environment during baking. It is necessary to avoid concentration. Conventionally, as shown in FIG. 1, one end of this joint is connected to a metallized layer 4 applied to a part of the axial surface of a cylindrical alumina ceramic 2, which has the same coefficient of linear expansion as the alumina ceramic 2. A disc-shaped flange of about 100 mm is used as the joining metal 3, and this is used as the flange part 1 of the cylindrical metal member.
A flange joint brazed at the brazed portion 5 is used to provide insulation and connection to the exhaust pipe at the same time.
しかる後に、排気ベーキング時にアルミナセラ
ミツクス２のメタライズ層４での接着点、接着金
属３と円筒状金属部材のフランジ部１とのろう付
接着点の間で、各々の線膨張率の違いにより熱膨
張差が発生する。このため接合金属３に径方向７
に伸び変形が生じ、接合金属３の降伏破断、ある
いはメタライズ層４の接着部におけるせん断応力
集中によりアルミナセラミツクスの脆性破壊を生
ぜしめる恐れがあり、ひいては高温、真空排気機
能を損わしめることになる。 After that, during exhaust baking, thermal expansion occurs between the bonding point of the alumina ceramics 2 on the metallized layer 4 and the brazing bonding point of the adhesive metal 3 and the flange portion 1 of the cylindrical metal member due to the difference in linear expansion coefficient. A difference occurs. Therefore, the radial direction 7 is applied to the joining metal 3.
Stretching deformation occurs, which may cause yield fracture of the bonding metal 3 or brittle fracture of the alumina ceramics due to shear stress concentration at the bonded portion of the metallized layer 4, which may further impair high temperature and vacuum evacuation functions. .
又、径に比ベトーラス軸方向に寸法の長い真空
容器に対する接続構造が特開昭54−142496号公報
の如く提案されているが、しかし、この一端Ｕ字
形（あるいはＶ字形）の金属板構造では、ベロー
効果を利用していることからも判るように径方向
の熱膨張が軸方向のそれに比べはるかに大きい場
合には不向きである。 In addition, a connection structure for a vacuum vessel having a longer dimension in the axial direction than the diameter has been proposed as in JP-A-54-142496, but this metal plate structure with one end U-shaped (or V-shaped) As can be seen from the fact that it uses the bellows effect, it is not suitable when the thermal expansion in the radial direction is much larger than that in the axial direction.
本発明は上記欠点に鑑み成されたものでその目
的とするところは、機械部品の結合部において発
生する熱応力を軽減し、絶縁性及び高真空を保持
出来かつ強固な絶縁フランジ継手を提供するにあ
る。 The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to provide a strong insulating flange joint that can reduce thermal stress generated at joints of mechanical parts, maintain insulation properties and high vacuum. It is in.
本発明者等が解析及び実験により確認したとこ
ろによれば、セラミツクス等の絶縁部材と金属部
分をデイスク状の鍔を介して結合する継手におい
ては、高温環境下で絶縁部材、金属部の熱膨張差
により鍔の径方向変形が生じ、絶縁部材と鍔の接
合部でせん断破壊を生じる。これは板形状を有す
る鍔の径方向面内剛性が高く接合部への変形集中
を生じるためで、一定の径方向変形に対しては、
面内より曲げ剛性の小なることから、径方向変形
を曲げ変形で吸収すれば、一定の変形に対して鍔
の接合部での反力も小さくなり接合部への変形集
中が避けられる。 The inventors have confirmed through analysis and experiments that in a joint that connects an insulating member such as ceramics and a metal part through a disc-shaped collar, thermal expansion of the insulating member and the metal part occurs in a high-temperature environment. The difference causes radial deformation of the flange, causing shear failure at the joint between the insulating member and the flange. This is because the radial in-plane rigidity of the plate-shaped brim is high, causing deformation to concentrate at the joint, and for a certain radial deformation,
Since the bending rigidity is smaller than that in the plane, if the radial deformation is absorbed by the bending deformation, the reaction force at the joint of the collar against a certain amount of deformation will also be reduced, and deformation concentration at the joint can be avoided.
以下本発明の実施例を図面によつて具体的に説
明する。尚、符号は従来と同一のものは同符号を
使用する。 Embodiments of the present invention will be specifically described below with reference to the drawings. Incidentally, the same reference numerals are used for the same parts as in the past.
本発明の一実施例第２図において、１は円筒状
金属部材のフランジ部、２は円筒状のアルミナセ
ラミツクスであり、２つの円筒状金属部材のフラ
ンジ部１間の接合に際し相互に電気的絶縁を計つ
ている。３はアルミナセラミツクス２と線膨張特
性がほぼ等しく、且つ小なる縦弾性係数を持つカ
ツプ形状の接合金属、４はアルミナセラミツクス
２と接合金属３の接着部で、モリブデンやジルコ
ニウム、あるいはチタニウム等でアルミナセラミ
ツクス２の表面付近を還元して結合層を形成した
メタライズ層、５は円筒状金属部材のフランジ部
１と接合金属３とのろう付部で、メタライズ層接
着部４とともに真空封止を計つている。 One embodiment of the present invention In FIG. 2, 1 is a flange portion of a cylindrical metal member, 2 is a cylindrical alumina ceramic, and when the flange portions 1 of the two cylindrical metal members are joined, they are electrically insulated from each other. I am measuring. 3 is a cup-shaped joining metal that has almost the same linear expansion characteristics as the alumina ceramics 2 and has a small longitudinal elastic modulus; 4 is the bonding part between the alumina ceramics 2 and the joining metal 3; the alumina is made of molybdenum, zirconium, titanium, etc. A metallized layer 5 is a bonding layer formed by reducing the vicinity of the surface of the ceramics 2, and 5 is a brazed portion between the flange portion 1 of the cylindrical metal member and the joining metal 3, and is vacuum-sealed together with the metallized layer adhesive portion 4. There is.
而して、本実施例では円筒状金属部材のフラン
ジ部１とアルミナセラミツクス２との接合金属３
にあらかじめ曲げ加工等により成形した適当な長
さを有する円筒部６を構成している。 Therefore, in this embodiment, the joining metal 3 between the flange portion 1 of the cylindrical metal member and the alumina ceramics 2 is
A cylindrical portion 6 having an appropriate length is formed by bending or the like in advance.
第３図の実施例においては、接合金属３の構造
として、アルミナセラミツクス２に接着された円
板状のフランジの外周部に、同一材質の円管６′
をろう付接合し、該円管６′の他端を円筒状金属
部材のフランジ部１にろう付してなり、円筒状金
属部材のフランジ部１とアルミナセラミツクス２
間に円筒部を構成する。これら実施例によれば、
円筒状金属部材のフランジ部１とアルミナセラミ
ツクス２の間において、径方向に生じる熱膨張差
は接合金属円筒部６の曲げ変形で吸収され、接合
金属端部のろう付部４に加わるせん断応力が緩和
され、継手高強度かつ高温、高真空で使用せしめ
る効果がある。 In the embodiment shown in FIG. 3, as the structure of the bonding metal 3, a circular pipe 6' made of the same material is attached to the outer circumference of the disc-shaped flange bonded to the alumina ceramics 2.
The other end of the circular tube 6' is brazed to the flange part 1 of the cylindrical metal member, and the flange part 1 of the cylindrical metal member and the alumina ceramics 2 are connected by brazing.
A cylindrical portion is formed in between. According to these examples,
The difference in thermal expansion that occurs in the radial direction between the flange portion 1 of the cylindrical metal member and the alumina ceramics 2 is absorbed by the bending deformation of the joined metal cylindrical portion 6, and the shear stress applied to the brazed portion 4 at the end of the joined metal is reduced. It has the effect of making the joints have high strength and can be used at high temperatures and high vacuums.
本発明者等の解析によると、第４図に示すよう
に、これら実施例において、円筒部の有効長さを
円筒状金属部材のフランジ部１とアルミナセラミ
ツクス２における接合金属との各接着部間の長さ
の２〜４倍程度にすることにより従来構造に比較
して、接合金属及び該金属とアルミナセラミツク
ス接着部に発生する応力を1/4〜1/5に軽減出来る
ことが確認される。 According to the analysis by the present inventors, as shown in FIG. It has been confirmed that by making the length approximately 2 to 4 times the length of the metal, the stress generated in the bonded metal and the bond between the metal and alumina ceramics can be reduced to 1/4 to 1/5 compared to the conventional structure. .
本発明によれば、絶縁接続部に熱膨張差が生じ
た時、接合金属の径方向たわみ剛性が小さくな
り、金属母材と同時に接着部の応力を軽減出来、
結果的に高い真空封止性をもち、且つより高温で
使用可能な絶縁フランジ継手を提供出来る。 According to the present invention, when a thermal expansion difference occurs in the insulated connection part, the radial deflection rigidity of the bonded metal decreases, and the stress in the bonded part can be reduced at the same time as the metal base material.
As a result, it is possible to provide an insulating flange joint that has high vacuum sealability and can be used at higher temperatures.
第１図は従来の絶縁フランジ継手構造を示す断
面図、第２図は本発明の絶縁フランジ継手の一実
施例を示す断面図、第３図は本発明の他の実施例
を示す断面図、第４図は本発明構造の円筒部長さ
と接合金属の生じる最大応力の関係を示す特性図
である。
１……円筒状金属部材のフランジ部、２……ア
ルミナセラミツクス、３……接合金属、４……メ
タライズ層、５……ろう付部、６……接合金属円
筒部。
FIG. 1 is a sectional view showing a conventional insulating flange joint structure, FIG. 2 is a sectional view showing one embodiment of the insulating flange joint of the present invention, and FIG. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a characteristic diagram showing the relationship between the cylindrical length of the structure of the present invention and the maximum stress generated in the joining metal. DESCRIPTION OF SYMBOLS 1... Flange part of cylindrical metal member, 2... Alumina ceramics, 3... Joining metal, 4... Metallized layer, 5... Brazing part, 6... Joining metal cylindrical part.
Claims (1)
軸方向表面の一部にメタライズ層を有する円筒状
のアルミナセラミツクスと、該アルミナセラミツ
クスのメタライズ層の各各に一端がろう付され、
かつ、各々の他端が各円筒状金属部材のフランジ
部に接合される前記アルミナセラミツクスの線膨
張率とほぼ同程度の接合金属を介して一体化する
絶縁フランジ継手において、前記接合金属は筒状
の鍔部を有し、該鍔部の端部が前記円筒状金属部
材のフランジ部に接合されていることを特徴とす
る絶縁フランジ継手。1. Connect the flange parts of two cylindrical metal members to each other,
a cylindrical alumina ceramic having a metallized layer on a part of its axial surface; one end of each of the metallized layers of the alumina ceramic is brazed;
and an insulating flange joint in which each other end is integrated with the flange portion of each cylindrical metal member via a joining metal having a coefficient of linear expansion approximately equal to the linear expansion coefficient of the alumina ceramic, the joining metal having a cylindrical shape. An insulating flange joint characterized in that it has a flange portion, and an end portion of the flange portion is joined to a flange portion of the cylindrical metal member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57209341A JPS59100889A (en) | 1982-12-01 | 1982-12-01 | Insulating flange joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57209341A JPS59100889A (en) | 1982-12-01 | 1982-12-01 | Insulating flange joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59100889A JPS59100889A (en) | 1984-06-11 |
| JPS6253074B2 true JPS6253074B2 (en) | 1987-11-09 |
Family
ID=16571340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57209341A Granted JPS59100889A (en) | 1982-12-01 | 1982-12-01 | Insulating flange joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100889A (en) |
-
1982
- 1982-12-01 JP JP57209341A patent/JPS59100889A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59100889A (en) | 1984-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH061666B2 (en) | Joining method for laminated members | |
| JPS6253074B2 (en) | ||
| JPS63231928A (en) | Bonding body | |
| JP3526229B2 (en) | Bonding method and bonding structure of insulating ring and cathode metal fitting for sodium-sulfur battery | |
| JPS6153174A (en) | Buffer material for bonding ceramic | |
| JPH0113620B2 (en) | ||
| JPH06131934A (en) | Insulator | |
| JP4101425B2 (en) | Ceramic susceptor mounting structure and support structure | |
| JP3501834B2 (en) | Manufacturing method of joined body of ceramic material and metal material | |
| WO2014090063A1 (en) | High-temperature-resistant high-strength sealing film structure between glass tube and metal piece | |
| JPS62150620A (en) | Covering assembly of vacuum breaker | |
| JP3086871B2 (en) | Hermetic sealing device for neutron detector | |
| JP2945466B2 (en) | Airtight joint structure between ceramic tube and metal | |
| JPH07172946A (en) | Joined product between ceramic part and metallic part | |
| JP2997769B2 (en) | Hermetic sealing device for neutron detector | |
| JPH03269923A (en) | Vacuum interrupter | |
| JPH05827B2 (en) | ||
| JP2758332B2 (en) | Insulation fitting | |
| CN117249329A (en) | Insulating seal assembly and thermionic energy converter comprising same | |
| JP2005317231A (en) | Accelerating tube | |
| JPH0355075Y2 (en) | ||
| JPH0292873A (en) | Bonded material of member having different coefficient of thermal expansion | |
| JPH05315463A (en) | Vacuum airtight device of junction structure between ceramic and metal | |
| JPH07245199A (en) | Superconducting accelerator | |
| JP2024025435A (en) | Retainer device |