JP6760522B1 - 歪み検出装置 - Google Patents
歪み検出装置 Download PDFInfo
- Publication number
- JP6760522B1 JP6760522B1 JP2019566979A JP2019566979A JP6760522B1 JP 6760522 B1 JP6760522 B1 JP 6760522B1 JP 2019566979 A JP2019566979 A JP 2019566979A JP 2019566979 A JP2019566979 A JP 2019566979A JP 6760522 B1 JP6760522 B1 JP 6760522B1
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- metal plate
- optical fiber
- detection device
- metal
- 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.)
- Active
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 88
- 239000013307 optical fiber Substances 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 26
- 238000005219 brazing Methods 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910017060 Fe Cr Inorganic materials 0.000 claims description 3
- 229910002544 Fe-Cr Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/241—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet by photoelastic stress analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
Abstract
Description
2 ボイラ配管
3 溶接部
4 金属板
5 光ファイバ
21 第1配管
22 第2配管
51 被覆部分
52 露出部分
61,62 金属管
210 第1端部
220 第2端部
D1 第1方向
D2 第2方向
Claims (7)
- ボイラ配管の一部である第1配管の第1端部と第2配管の第2端部との溶接部を跨いだ状態で前記第1端部と前記第2端部とに固定される金属板と、
前記金属板上に固定され前記第1配管及び前記第2配管の軸方向に延びる光ファイバと、を備え、
前記光ファイバは、
前記軸方向に延びる金属管の内部に収容される被覆部分と、
前記金属管から露出し前記金属板に固定される露出部分と、を有し、
前記露出部分は、ボイラ配管の径方向外側からみて前記溶接部に重なる部位に位置する、
歪み検出装置。 - 前記第1配管の材質は、前記第2配管の材質と同一であり、
前記金属板の材質は、前記第1配管及び前記第2配管の材質と同一である、
請求項1に記載の歪み検出装置。 - 前記光ファイバは、金属板にろう付けされる、
請求項1又は2に記載の歪み検出装置。 - 前記ろう付けのろう材は、Ni、Au、及びFe−Cr合金の少なくともいずれかを含む、
請求項3に記載の歪み検出装置。 - 前記金属板は、前記軸方向に沿って延びる平面視で矩形状であり、前記軸方向に沿った第1方向の長さは、前記第1方向に直交する第2方向の長さよりも長い、
請求項1から4のいずれか1項に記載の歪み検出装置。 - 前記金属管は、ステンレス鋼を含む、
請求項1から5のいずれか1項に記載の歪み検出装置。 - 前記金属板は、前記第1端部と前記第2端部とにスポット溶接される、
請求項1から6のいずれか1項に記載の歪み検出装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2019/028969 WO2021014602A1 (ja) | 2019-07-24 | 2019-07-24 | 歪み検出装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6760522B1 true JP6760522B1 (ja) | 2020-09-23 |
JPWO2021014602A1 JPWO2021014602A1 (ja) | 2021-09-13 |
Family
ID=72517891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019566979A Active JP6760522B1 (ja) | 2019-07-24 | 2019-07-24 | 歪み検出装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230175901A1 (ja) |
EP (1) | EP4006484A4 (ja) |
JP (1) | JP6760522B1 (ja) |
WO (1) | WO2021014602A1 (ja) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5594819A (en) * | 1995-07-26 | 1997-01-14 | Electric Power Research Institute | Field-mountable fiber optic sensors for long term strain monitoring in hostile environments |
JP2001013334A (ja) * | 1999-06-29 | 2001-01-19 | Showa Electric Wire & Cable Co Ltd | ファイバ型検出素子、その製造方法および製造装置、並びにそれを用いたセンサ |
JP3869286B2 (ja) * | 2002-03-04 | 2007-01-17 | 古河電気工業株式会社 | Fbgの取付け構造 |
JP3643097B2 (ja) | 2002-08-21 | 2005-04-27 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | 軸力計 |
JP2006194704A (ja) * | 2005-01-12 | 2006-07-27 | Kyowa Electron Instr Co Ltd | 溶接型光ひずみゲージとその製造方法および溶接型光ひずみゲージユニット |
JP4366403B2 (ja) * | 2007-01-16 | 2009-11-18 | 株式会社東京測器研究所 | ひずみセンサ及びひずみ検知システム |
JP2009287957A (ja) * | 2008-05-27 | 2009-12-10 | Chiyoda Kako Kensetsu Kk | 歪検知用システム及びこれを用いた歪検知方法 |
CN202216784U (zh) * | 2011-06-03 | 2012-05-09 | 大连理工大学 | 一种带温度自补偿的光纤光栅索力传感器 |
JP5805912B1 (ja) * | 2014-03-12 | 2015-11-10 | 中国電力株式会社 | 距離測定装置、距離測定方法 |
-
2019
- 2019-07-24 WO PCT/JP2019/028969 patent/WO2021014602A1/ja active Application Filing
- 2019-07-24 JP JP2019566979A patent/JP6760522B1/ja active Active
- 2019-07-24 EP EP19938130.2A patent/EP4006484A4/en active Pending
- 2019-07-24 US US17/625,900 patent/US20230175901A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP4006484A1 (en) | 2022-06-01 |
JPWO2021014602A1 (ja) | 2021-09-13 |
EP4006484A4 (en) | 2023-05-03 |
US20230175901A1 (en) | 2023-06-08 |
WO2021014602A1 (ja) | 2021-01-28 |
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