JPH0633442Y2 - Optical fiber airtight penetration - Google Patents
Optical fiber airtight penetrationInfo
- Publication number
- JPH0633442Y2 JPH0633442Y2 JP1986029291U JP2929186U JPH0633442Y2 JP H0633442 Y2 JPH0633442 Y2 JP H0633442Y2 JP 1986029291 U JP1986029291 U JP 1986029291U JP 2929186 U JP2929186 U JP 2929186U JP H0633442 Y2 JPH0633442 Y2 JP H0633442Y2
- Authority
- JP
- Japan
- Prior art keywords
- rod
- optical
- fitting
- optical fiber
- peripheral edge
- 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 - Lifetime
Links
Landscapes
- Light Guides In General And Applications Therefor (AREA)
Description
【考案の詳細な説明】 ［技術分野］ 本考案は原子力発電所の原子炉格納容器のような容器等
の貫通孔に対して光ファイバを気密の状態で貫通させる
光ファイバ気密貫通部の改善に係わる。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention is to improve an optical fiber airtight penetrating portion that allows an optical fiber to penetrate through a through hole of a container such as a reactor containment vessel of a nuclear power plant in an airtight state. Involve
［背景技術］ 例えば、原子力発電所の原子炉格納容器の光ファイバ貫
通部のように容器等の貫通孔にシールに関して高い信頼
性を備える光ファイバ気密貫通部を構成するためには第
３図に示すようなオプティカルロッドを使用するものが
提案されている。[Background Art] For example, in order to construct an optical fiber airtight penetrating portion having a high reliability in a through hole of a container or the like, such as an optical fiber penetrating portion of a reactor containment vessel of a nuclear power plant, FIG. It has been proposed to use an optical rod as shown.
オプティカルロッドは通常屈折率の高いコア部とその外
周のコア部分より屈折率の低いクラッド部よりなる光フ
ァイバの外周にシースを一体に形成したものであって、
すべて石英ガラスからなるものである。第４図に示すよ
うに前記オプティカルロッドには円筒状封着ガラス材４
がその一方の周縁で溶着され、円筒状封着ガラス材４の
他端には円筒状をなし段部６を有し可撓性を備えるコバ
ール金属製の筒状金具５が溶着される。An optical rod is one in which a sheath is integrally formed on the outer periphery of an optical fiber composed of a core portion having a high refractive index and a clad portion having a lower refractive index than the core portion on the outer periphery thereof,
All are made of quartz glass. As shown in FIG. 4, the optical rod has a cylindrical sealing glass material 4
Is welded at one peripheral edge thereof, and a cylindrical metal fitting 5 made of Kovar metal having a cylindrical step portion 6 and having flexibility is welded to the other end of the cylindrical sealing glass material 4.
第５図は従来の光ファイバ気密貫通部の一例を示し８は
容器壁７にあけられた貫通孔を示している。貫通孔８を
前記筒状金具５の開孔に対応して適当な大きさとし貫通
孔８の周縁と適当な長さを有する金属筒９の一方の周縁
とを溶接し前記金属筒９の他端周縁で前記の筒状金具５
周縁を合せてロウ付により封着する。なお図において10
はオプティカルロッド１の端部におけるオプティカルロ
ッド１と光ファイバ２とのコネクタを示している。FIG. 5 shows an example of a conventional optical fiber airtight penetrating portion, and 8 shows a through hole formed in the container wall 7. The through hole 8 is appropriately sized to correspond to the opening of the tubular fitting 5, and the peripheral edge of the through hole 8 and one peripheral edge of the metal cylinder 9 having an appropriate length are welded together to form the other end of the metal cylinder 9. The above-mentioned tubular fitting 5 at the periphery
The edges are matched and sealed by brazing. In the figure, 10
Shows a connector between the optical rod 1 and the optical fiber 2 at the end of the optical rod 1.
以上のようにして光ファイバの容器内への気密貫通部が
構成されるが、オプティカルロッドが通常約3mmφ程度
の石英ガラス棒でありこれが露出しているためコネクタ
接続やロウ付作業中の取扱いなどで折れることがあっ
た。The airtight penetration into the container of the optical fiber is constructed as described above, but the optical rod is usually a quartz glass rod of about 3 mmφ and it is exposed, so connector connection and handling during brazing work etc. I could break it.
［考案の開示］ 本考案は上述のようなコネクタ接続やロウ付作業中、ま
たはその後のロッドの折損を防止し、同時に組立段階に
おいて、オプティカルロッドのシール性、光伝送性の検
証できる光ファイバ気密貫通部を提案するものであっ
て、内周縁より突出した筒状部にオプティカルロッドに
対する二個のロッド保護筒の嵌合面を具え、外周縁が突
縁をなすドーナツ状円板金具を用い、前記円板金具の筒
状部分にオプティカルロッドを通し、両者の間を円筒状
封着ガラス材又はシール材により封止し、前記ロッド保
護筒の一端を前記嵌合面にて嵌合するとともに、前記保
護筒の他端でファイバコネクタを固定し、貫通壁側金属
筒の他端周縁部と前記ドーナツ状円板金具の突縁の周縁
部を封止した構成にある。DISCLOSURE OF THE INVENTION The present invention prevents breakage of the rod during or after the connector connection or brazing work as described above, and at the same time, at the assembly stage, the sealing property and the optical transmission property of the optical rod can be verified. Providing a penetrating portion, a tubular portion protruding from the inner peripheral edge is provided with a mating surface of two rod protective cylinders for optical rods, and a donut-shaped disc fitting whose outer peripheral edge is a protruding edge is used. An optical rod is passed through the tubular portion of the disc fitting, and a space between the two is sealed with a cylindrical sealing glass material or a sealing material, and one end of the rod protection tube is fitted with the fitting surface, A fiber connector is fixed at the other end of the protective cylinder, and the peripheral edge of the other end of the through-wall-side metal cylinder and the peripheral edge of the protruding edge of the donut-shaped disc fitting are sealed.
以下、第１図に示す実施例、ならびにドーナツ状円板金
具とオプティカルロッドの封止を示す第２図により本考
案を説明する。Hereinafter, the present invention will be described with reference to the embodiment shown in FIG. 1 and FIG. 2 showing sealing of a donut-shaped disc fitting and an optical rod.
オプティカルロッド１はすでに第３図について説明した
ものが用いられる。図において11はドーナツ状円板金具
を示すが、その内周縁は突出して筒状部分を形成し、オ
プティカルロッド１に対するロッド保護筒16の、例えば
ネジ面による嵌合面12が形成されている。嵌合面12の中
央より円板部15が突出して外周縁をなすが、外周縁には
突縁14が外周にわたり形成されている。As the optical rod 1, the one already described with reference to FIG. 3 is used. In the figure, reference numeral 11 denotes a donut-shaped disc metal fitting, the inner peripheral edge of which protrudes to form a cylindrical portion, and a fitting surface 12 of the rod protection cylinder 16 for the optical rod 1 is formed by, for example, a screw surface. A disk portion 15 projects from the center of the fitting surface 12 to form an outer peripheral edge, and a projecting edge 14 is formed over the outer peripheral edge on the outer peripheral edge.
このドーナツ状円板金具11の材質はコバール金属であ
る。The material of the donut-shaped disc fitting 11 is Kovar metal.
前記オプティカルロッド１をこのドーナツ状円板金具11
の筒状部分に挿入し、オプティカルロッド１をドーナツ
状円板金具11に対して所定の位置合せを行って、円筒状
封着ガラス材４によって、オプティカルロッド１とドー
ナツ状円板金具１の筒状部分の間を容着等により封止す
る。次に前記筒状部分に形成された嵌合面12に２個のロ
ッド保護筒12をそれぞれ嵌合する。The optical rod 1 is attached to the donut-shaped disc fitting 11
The optical rod 1 is inserted into the tubular part of the donut-shaped disc metal fitting 11, and the optical rod 1 and the donut-shaped disc metal fitting 1 are aligned by the cylindrical sealing glass material 4. The space between the shaped portions is sealed by adhesion or the like. Next, the two rod protection cylinders 12 are fitted to the fitting surfaces 12 formed on the cylindrical portion.
17は、例えば前記ロッド保護筒16の他端に対する嵌合面
18を有するファイバコネクタであり、オプティカルロッ
ド１とファイバコネクタ17を調心して例えば接着剤19で
嵌合部を接続する。なお、接続はビス等による機械的接
続方法によってもよい。この結果ファイバコネクタ17を
介して光ファイバ２とオプティカルロッド１の光学的接
続を行っても、コネクタ17に加わる力はロッド保護筒16
で支えられ、オプティカルロッド１に加わることはな
い。17 is a fitting surface for the other end of the rod protection cylinder 16, for example.
This is a fiber connector having 18, and the optical rod 1 and the fiber connector 17 are aligned and the fitting portion is connected with an adhesive 19, for example. The connection may be made by a mechanical connection method such as a screw. As a result, even if the optical fiber 2 and the optical rod 1 are optically connected via the fiber connector 17, the force applied to the connector 17 is still the rod protection cylinder 16.
It is supported by and does not join the optical rod 1.
また運転時においてロッド保護筒16が加熱され膨張する
ようなことがあっても、その張力はオプティカルロッド
１に加わることはない。容器壁７にあけられた貫通孔８
に適当な長さを有する金属筒９の一端がその周縁で貫通
孔８の周縁に溶接され、前記金属筒の他端周縁とドーナ
ツ状円板11の突縁14を合せてロウ付され接合部は封着さ
れる。なお前記のドーナツ状円板金具11とオプティカル
ロッド１の封着はガラス封着でなく有機シール材によっ
てもよい。Further, even if the rod protection cylinder 16 is heated and expands during operation, the tension is not applied to the optical rod 1. Through hole 8 formed in container wall 7
One end of a metal cylinder 9 having an appropriate length is welded to the peripheral edge of the through hole 8 at its peripheral edge, and the other peripheral edge of the metal cylinder and the projecting edge 14 of the donut-shaped disc 11 are brazed together to form a joint. Is sealed. The donut-shaped disc fitting 11 and the optical rod 1 may be sealed by an organic sealing material instead of the glass sealing.
［効果］ すでに説明したドーナツ状円板金具を用いてオプティカ
ルロッドを通して両者の間を封止し、ここでまず、ガラ
スまたはシール材による封止状態を十分に点検すること
ができ、このドーナツ状円板金具の中央から外方向にの
びる円板部を間にしてそれぞれロッド保護筒を嵌合して
保持することができ、ファイバコネクタを前記保護筒に
おいて固定後、前記円板部外周の突縁で貫通孔側金属筒
との間を封止することができ、一つのドーナツ状円板金
具で、２つの封止部を形成し、ロッドの保護筒を一端で
はあるがこれを保持することができ、従来のものに比べ
て構造の簡潔化をはかることができる。[Effect] Using the donut-shaped disc metal fitting described above, the optical rod is used to seal between them, and first, the sealed state of the glass or sealing material can be thoroughly checked. It is possible to fit and hold rod protection cylinders with a disk part extending outward from the center of the plate metal fitting in between, and after fixing the fiber connector in the protection cylinder, at the projecting edge on the outer circumference of the disk part. It is possible to seal between the through-hole side metal cylinder, and to form two sealing parts with one donut-shaped disc fitting, and to hold the rod protection cylinder at one end The structure can be simplified as compared with the conventional one.
また、ファイバコネクタとオプティカルロッドを調心し
てロッド保護筒の両端部にてファイバコネクタを固定保
持し、この固定保持によりロッド保護筒に内蔵されるオ
プティカルロッド１および円筒状封着ガラス材４をこれ
に加わる外力から保護することができる。Further, the fiber connector and the optical rod are aligned to fix and hold the fiber connector at both ends of the rod protection cylinder, and the optical rod 1 and the cylindrical sealing glass material 4 built in the rod protection cylinder are fixed and held by this fixed holding. It can be protected from external force applied.
このため、オプティカルロッドの折損防止が図れると共
に気密シールに対しても信頼性が向上する効果がある。
従って、本考案によれば極めて高い信頼性を備えた光フ
ァイバ気密貫通部を構成することができる。Therefore, the optical rod can be prevented from being broken and the reliability of the airtight seal can be improved.
Therefore, according to the present invention, it is possible to construct an optical fiber hermetically sealed portion having extremely high reliability.
第１図は本考案の一実施例を示す。 第２図は第１図の実施例において用いられる可撓性ドー
ナツ状円板金具ほかを示す。 第３図はオプティカルロッドを示す。 第４図は従来の可撓性筒状金具ほかを示す。 第５図は従来のオプティカルロッドによる光ファイバ気
密貫通の一例を示す。 １…オプティカルロッド、２…光ファイバ、７…容器
壁、８…貫通孔、９…金属筒、11…可撓性ドーナツ状円
板金具、12…嵌合面、16…ロッド保護筒、17…ファイバ
コネクタ。FIG. 1 shows an embodiment of the present invention. FIG. 2 shows a flexible donut-shaped disc fitting used in the embodiment of FIG. FIG. 3 shows an optical rod. FIG. 4 shows a conventional flexible tubular fitting and the like. FIG. 5 shows an example of airtight penetration of an optical fiber by a conventional optical rod. DESCRIPTION OF SYMBOLS 1 ... Optical rod, 2 ... Optical fiber, 7 ... Container wall, 8 ... Through hole, 9 ... Metal cylinder, 11 ... Flexible donut-shaped disc metal fitting, 12 ... Fitting surface, 16 ... Rod protection cylinder, 17 ... Fiber connector.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 神代 哲哉 兵庫県神戸市兵庫区和田崎町１丁目１番２ 号 三菱電機株式会社神戸製作所内 (72)考案者 武田 淳 兵庫県神戸市兵庫区和田崎町１丁目１番２ 号 三菱電機株式会社神戸製作所内 (56)参考文献 実開 昭58−11704（ＪＰ，Ｕ) 実開 昭57−119306（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Tetsuya Kamishiro 1-2-2 Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Electric Corporation Kobe Works (72) Inventor Jun Takeda Wa, Hyogo-ku, Kobe-shi, Hyogo 1-2-1 Tasakicho Mitsubishi Electric Co., Ltd. Kobe Works (56) Bibliographic Reference Showa 58-11704 (JP, U) Actual Showa 57-119306 (JP, U)
Claims (1)
いる光ファイバ気密貫通部であって、内周縁は突出して
筒状部分を形成し、オプティカルロッド１に対する二個
のロッド保護筒16の嵌合面12を具え、外周縁が突縁14を
なすドーナツ状円板金具11を用い、前記円板金具11の筒
状部分にオプティカルロッド１を通し、両者の間を円筒
状封着ガラス材４又はシール材により封止し、前記ロッ
ド保護筒16の一端を前記嵌合面にて嵌合するとともに、
前記保護筒16の他端でファイバコネクタ17を固定し、貫
通壁側金属筒９の他端周縁部と前記ドーナツ状円板金具
11の突縁14の周縁部を封止することを特徴とする光ファ
イバ気密貫通部。1. An optical fiber airtight penetrating portion using an optical rod as a penetrating portion of a container or the like, the inner peripheral edge of which protrudes to form a cylindrical portion, and two rod protection cylinders 16 are fitted to the optical rod 1. Using a doughnut-shaped disc metal fitting 11 having a surface 12 and an outer peripheral edge of which is a protruding edge 14, the optical rod 1 is passed through the cylindrical portion of the disc metal fitting 11 and a cylindrical sealing glass material 4 or Sealing with a sealing material, while fitting one end of the rod protection cylinder 16 at the fitting surface,
The fiber connector 17 is fixed at the other end of the protection cylinder 16, and the other end peripheral portion of the through wall side metal cylinder 9 and the donut-shaped disc metal fitting are fixed.
An optical fiber airtight penetrating portion, characterized in that a peripheral portion of a projecting edge 14 of 11 is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986029291U JPH0633442Y2 (en) | 1986-02-28 | 1986-02-28 | Optical fiber airtight penetration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986029291U JPH0633442Y2 (en) | 1986-02-28 | 1986-02-28 | Optical fiber airtight penetration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62142003U JPS62142003U (en) | 1987-09-08 |
| JPH0633442Y2 true JPH0633442Y2 (en) | 1994-08-31 |
Family
ID=30833047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986029291U Expired - Lifetime JPH0633442Y2 (en) | 1986-02-28 | 1986-02-28 | Optical fiber airtight penetration |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633442Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811704U (en) * | 1981-07-15 | 1983-01-25 | 住友電気工業株式会社 | Optical fiber wall penetration part |
-
1986
- 1986-02-28 JP JP1986029291U patent/JPH0633442Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62142003U (en) | 1987-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5588086A (en) | Fiber optic hermetic bulkhead penetrator feedthrough module and method of fabricating same | |
| US3910678A (en) | Fiber optic tubular star connector | |
| CA2085849A1 (en) | Reinforced Optical Fiber and Method of Manufacture | |
| US5602952A (en) | Packaging fibre optic components | |
| JPS61285409A (en) | Optical fiber connector connecting method and its connector | |
| EP0109695A3 (en) | Optical communication element | |
| JPS6292902A (en) | Termination of optical fiber cable and formation thereof | |
| JPH0633442Y2 (en) | Optical fiber airtight penetration | |
| EP0207449A3 (en) | Fiber optic connector backshell | |
| JPS59135414A (en) | Package apparatus for optical fiber connector and manufacture thereof | |
| JPS5987004U (en) | Airtight penetration for optical transmission line | |
| JPS6219722B2 (en) | ||
| JPS6320961Y2 (en) | ||
| JPS6320962Y2 (en) | ||
| JPH046002Y2 (en) | ||
| JPS59201010A (en) | Ferrule structure of optical connector plug | |
| JPS63216010A (en) | Joining method for optical fiber and ferrule by optical connector | |
| JPH0336969Y2 (en) | ||
| JPS6157913A (en) | Assembling method of connector for optical fiber | |
| SU1196553A1 (en) | Detachable joint of "dovetail" type | |
| JPS629746Y2 (en) | ||
| JP2687715B2 (en) | Module for airtight penetration | |
| JP2773522B2 (en) | Optical fiber airtight terminal structure | |
| JPS644285Y2 (en) | ||
| EP0131742A3 (en) | A method for coupling the end section of an optical fiber cable to an optical connector |