JPH028245Y2 - - Google Patents
Info
- Publication number
- JPH028245Y2 JPH028245Y2 JP6648583U JP6648583U JPH028245Y2 JP H028245 Y2 JPH028245 Y2 JP H028245Y2 JP 6648583 U JP6648583 U JP 6648583U JP 6648583 U JP6648583 U JP 6648583U JP H028245 Y2 JPH028245 Y2 JP H028245Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- resistant
- tube
- image guide
- cladding 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
- 238000005253 cladding Methods 0.000 claims description 37
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
【考案の詳細な説明】
本考案は炉内を透視する用途等に適したフアイ
バスコープの耐熱構造に関するもので、透明石英
ガラスからなるイメージガイドとステンレス等か
らなる耐熱被覆管の線膨張係数の差を各部に無理
な応力を残すことなく吸収できるようにすること
を目的としている。[Detailed description of the invention] This invention relates to the heat-resistant structure of a fiberscope suitable for applications such as seeing through the inside of a furnace, and the difference in linear expansion coefficient between an image guide made of transparent quartz glass and a heat-resistant cladding made of stainless steel, etc. The purpose is to absorb stress without leaving undue stress on each part.
フアイバスコープにより炉内を透視する場合、
炉内は一般に500〜600℃の高温状態であるため、
イメージガイドを保護するための耐熱構造が必要
になる。ところが耐熱被覆管として耐熱性に優れ
たステンレスその他の鋼管を採用すると、イメー
ジガイドの素材である透明石英ガラスの線膨張係
数（5.6×10-7／℃）と耐熱被覆管の素材の線膨
張係数（SUS304の場合173×10-7／℃）が大幅に
相違しているため、イメージガイドに単に耐熱被
覆管を固着したのでは各部に無理な応力が加わ
り、耐久性が低下する。 When looking through the inside of the furnace with a fiberscope,
The inside of the furnace is generally at a high temperature of 500 to 600℃, so
A heat-resistant structure is required to protect the image guide. However, when stainless steel or other steel tubes with excellent heat resistance are used as heat-resistant cladding tubes, the coefficient of linear expansion of the transparent quartz glass (5.6 x 10 -7 /℃), which is the material of the image guide, and the linear expansion coefficient of the material of the heat-resistant cladding tubes. (173×10 -7 /℃ for SUS304), so simply attaching heat-resistant cladding to the image guide would put undue stress on each part and reduce durability.
本考案は少なくとも１対の耐熱被覆管を互いに
同芯かつ摺動自在に嵌合することにより上記問題
を解決しようとするもので、次に図面により説明
する。 The present invention attempts to solve the above problem by fitting at least one pair of heat-resistant cladding tubes concentrically and slidably to each other, and will be explained below with reference to the drawings.
図面において、１はステンレス製の耐熱管（ケ
ース）、２、３は耐熱管１に配列されたイメージ
ガイドとライトガイドである。耐熱管１は炉壁３
の孔を貫通して炉内前方（図の右方）へ突出し、
前端に石英ガラスからなる透視窓４を備え、後端
部は金属製のアダプタ５を介して可撓管６に接続
している。アダプタ５内にはビス７により金属製
の中子８が固着されており、中子８に設けた２個
の孔９、１０にそれぞれ金属製ホルダー（パイ
プ）１１、１２が嵌合固定されている。ホルダー
１１内の段付孔内にはイメージガイド２とそのプ
リコート層１３が嵌合し、プリコート層１３は接
着剤１４を介してホルダー１１に固着され、ホル
ダー１１の前端部とイメージガイド２の間には後
述する第２耐熱被覆管１５に摺動自在に嵌合する
第３耐熱被覆管１６の後端部が嵌合し、被覆管１
６とホルダー１１、イメージガイド２は接着剤１
７、１８により接着されている。第２耐熱被覆管
１５の後端部は第３耐熱被覆管１６の外周に接着
剤１９を介して接着され、第２被覆管１５は第３
被覆管１６よりも前方へ大幅に突出している。第
２被覆管１５の前半部内には第１耐熱被覆管２０
の後半部が摺動自在に嵌合し、第１被覆管２０の
前端部はイメージガイド２の前端部に接着剤２１
を介して接着され、第１被覆管２０の前端部外周
にはレンズホルダー２２が接着剤２３を介して接
着されている。レンズホルダー２２内には接着剤
２４を介してレンズ２５が固着されており、レン
ズ２５の前端は僅かな隙間をへだてて透視窓４に
対向している。 In the drawing, 1 is a heat-resistant tube (case) made of stainless steel, and 2 and 3 are an image guide and a light guide arranged in the heat-resistant tube 1. The heat-resistant tube 1 is the furnace wall 3
It penetrates the hole and protrudes to the front of the furnace (to the right in the figure).
A transparent window 4 made of quartz glass is provided at the front end, and the rear end is connected to a flexible tube 6 via a metal adapter 5. A metal core 8 is fixed inside the adapter 5 by screws 7, and metal holders (pipes) 11 and 12 are fitted and fixed into two holes 9 and 10 provided in the core 8, respectively. There is. The image guide 2 and its precoat layer 13 are fitted into the stepped hole in the holder 11 , and the precoat layer 13 is fixed to the holder 11 via an adhesive 14 , and between the front end of the holder 11 and the image guide 2 . A rear end portion of a third heat-resistant cladding tube 16 that is slidably fitted into a second heat-resistant cladding tube 15 (described later) is fitted into the cladding tube 1.
6 and holder 11, image guide 2 is adhesive 1
7 and 18. The rear end of the second heat-resistant cladding tube 15 is adhered to the outer periphery of the third heat-resistant cladding tube 16 via an adhesive 19, and the second heat-resistant cladding tube 15 is attached to the third heat-resistant cladding tube 16.
It protrudes significantly further forward than the cladding tube 16. Inside the front half of the second cladding tube 15 is a first heat-resistant cladding tube 20.
The rear half of the first cladding tube 20 is slidably fitted, and the front end of the first cladding tube 20 is attached with an adhesive 21 to the front end of the image guide 2.
A lens holder 22 is bonded to the outer periphery of the front end of the first cladding tube 20 via an adhesive 23. A lens 25 is fixed in the lens holder 22 via an adhesive 24, and the front end of the lens 25 faces the transparent window 4 with a slight gap.
ライトガイド３とそのプリコート層２７は接着
剤２８を介してホルダー１２の２段孔内に接着さ
れており、ホルダー１２の前端部外周面には第５
耐熱被覆管２９の後端部が接着剤３０を介して接
着され、第５被覆管２９内には第４被覆管３１の
後半部が摺動自在に嵌合している。第４被覆管３
１の前端部はライトガイド３の前端部外周に接着
剤３２を介して接着されている。ライトガイド３
の前端面は僅かな隙間をへだてて透視窓４に対向
している。尚３３は袋ナツトである。 The light guide 3 and its precoat layer 27 are bonded into the two-stage hole of the holder 12 via an adhesive 28, and a fifth
The rear end of the heat-resistant cladding tube 29 is bonded via an adhesive 30, and the rear half of the fourth cladding tube 31 is slidably fitted into the fifth cladding tube 29. Fourth cladding tube 3
The front end of the light guide 3 is bonded to the outer periphery of the front end of the light guide 3 via an adhesive 32. light guide 3
The front end face faces the transparent window 4 with a slight gap between them. Note that 33 is a bag nut.
イメージガイド２、ライトガイド３の耐熱管１
内における後端部はホルダー１１、１２、中子８
を介してアダプタ５に固着支持され、その部分か
ら耐熱管１内前方へ片持ち梁状に突出している。
そしてイメージガイド２の前端部には第１耐熱被
覆管２０の前端部が固着され、又イメージガイド
２の耐熱管１内における後端部には第２被覆管１
５の後端部が固着され、第１、第２被覆管２０、
１５は僅かな隙間をへだてて同芯かつ摺動自在に
嵌合しているので、耐熱部Ａが高温の炉内におい
て加熱されて耐熱被覆管２０、１５がイメージガ
イド２に比べて大幅に伸長しても、両被覆管２
０、１５は嵌合部において摺動し、線膨張係数の
差を無理なく吸収し、しかもイメージガイド２を
片持状に支持することができる。ライトガイド３
についても同様である。 Image guide 2, light guide 3 heat-resistant tube 1
The rear end inside the holder 11, 12, the core 8
It is fixedly supported by the adapter 5 via the adapter 5, and protrudes forward into the heat-resistant tube 1 from that part in a cantilever shape.
The front end of the first heat-resistant cladding tube 20 is fixed to the front end of the image guide 2, and the second cladding tube 1 is attached to the rear end of the image guide 2 inside the heat-resistant tube 1.
5 are fixed, the first and second cladding tubes 20,
15 are concentrically and slidably fitted with a slight gap between them, so the heat-resistant part A is heated in the high-temperature furnace, and the heat-resistant cladding tubes 20 and 15 are expanded significantly compared to the image guide 2. Even if both cladding tubes 2
0 and 15 slide in the fitting portion, absorbing the difference in linear expansion coefficient without difficulty, and supporting the image guide 2 in a cantilevered manner. light guide 3
The same applies to
以上説明したように本考案においては、耐熱管
１内のイメージガイド２の前端部に第１耐熱被覆
管２０の前端を固着し、耐熱管１内のイメージガ
イド後端部に第２耐熱被覆管１５の後端を固着
し、第１、第２の耐熱被覆管２０、１５を摺動自
在に嵌合したので、イメージガイド２と耐熱被覆
管２０、１５間の線膨張係数の差による伸縮量の
差を各部に無理な応力を残すことなく確実に吸収
する（逃がす）ことができ、フアイバスコープの
耐久性を大幅に向上することができる。 As explained above, in the present invention, the front end of the first heat-resistant cladding tube 20 is fixed to the front end of the image guide 2 inside the heat-resistant tube 1, and the second heat-resistant cladding tube is attached to the rear end of the image guide inside the heat-resistant tube 1. Since the rear end of 15 is fixed and the first and second heat-resistant cladding tubes 20 and 15 are slidably fitted, the amount of expansion and contraction due to the difference in linear expansion coefficient between the image guide 2 and the heat-resistant cladding tubes 20 and 15 It is possible to reliably absorb (relieve) the difference in stress without leaving undue stress on each part, and the durability of the fiberscope can be greatly improved.
尚イメージガイド２の耐熱被覆管装着構造とし
て、ライトガイド３側の２個の耐熱被覆管３１、
２９と同様の２本構造を採用することもできる。 As for the heat-resistant cladding tube installation structure of the image guide 2, two heat-resistant cladding tubes 31 on the light guide 3 side,
A two-piece structure similar to No. 29 can also be adopted.
図面は本考案を適用したフアイバスコープの前
端部縦断側面図である。
１……耐熱管、２……イメージガイド、１５…
…第２耐熱被覆管、２０……第１耐熱被覆管。
The drawing is a longitudinal sectional side view of the front end of a fiberscope to which the present invention is applied. 1...Heat-resistant tube, 2...Image guide, 15...
...Second heat-resistant cladding tube, 20...First heat-resistant cladding tube.
Claims (1)
イドを配置したフイバスコープにおいて、耐熱管
内のイメージガイド前端部に第１耐熱被覆管の前
端を固着し、耐熱管内のイメージガイド後端部に
第２耐熱被覆管の後端を固着し、第１、第２の耐
熱被覆管を摺動自在に嵌合したことを特徴とする
フアイバスコープの耐熱構造。 In a fiberscope in which an image guide is disposed inside a heat-resistant tube having a see-through window at the front end, the front end of a first heat-resistant cladding tube is fixed to the front end of the image guide inside the heat-resistant tube, and a second heat-resistant coating is attached to the rear end of the image guide inside the heat-resistant tube. A heat-resistant structure for a fiberscope, characterized in that the rear end of the tube is fixed, and first and second heat-resistant cladding tubes are slidably fitted together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6648583U JPS59173019U (en) | 1983-05-02 | 1983-05-02 | Heat-resistant structure of fiberscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6648583U JPS59173019U (en) | 1983-05-02 | 1983-05-02 | Heat-resistant structure of fiberscope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59173019U JPS59173019U (en) | 1984-11-19 |
| JPH028245Y2 true JPH028245Y2 (en) | 1990-02-27 |
Family
ID=30196694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6648583U Granted JPS59173019U (en) | 1983-05-02 | 1983-05-02 | Heat-resistant structure of fiberscope |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59173019U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522903Y2 (en) * | 1985-11-28 | 1993-06-11 |
-
1983
- 1983-05-02 JP JP6648583U patent/JPS59173019U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59173019U (en) | 1984-11-19 |
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