WO2013183126A1 - 光ファイバ温度センサ - Google Patents
光ファイバ温度センサ Download PDFInfo
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- WO2013183126A1 WO2013183126A1 PCT/JP2012/064525 JP2012064525W WO2013183126A1 WO 2013183126 A1 WO2013183126 A1 WO 2013183126A1 JP 2012064525 W JP2012064525 W JP 2012064525W WO 2013183126 A1 WO2013183126 A1 WO 2013183126A1
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- WIPO (PCT)
- Prior art keywords
- optical fiber
- housing
- temperature sensor
- insulating material
- fiber cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/005—Laminated bus-bars
Definitions
- the present invention relates to an optical fiber temperature sensor that constantly monitors temperature abnormalities of individual appliances such as bus bars and bolts constituting the interior of an electrical product.
- a bus bar that allows a switching current to flow to one end of a load control switching circuit and a bus bar that allows a switching current to flow out from the other end of the switching circuit are connected via an electrically insulating material. It is effective to employ a so-called sandwich bus bar that faces each other.
- This temperature monitoring apparatus is used in various fields such as tunnel disaster prevention facilities (for example, Patent Document 1).
- Patent Document 1 the entire length of one optical fiber cable installed in the length direction of the tunnel functions as a temperature sensor, and the temperature distribution over the entire length from one end to the other end of the optical fiber cable is collectively measured. Thus, the occurrence of a fire is detected.
- Patent Document 1 can measure the temperature distribution along the longitudinal direction of the optical fiber cable, the temperature measurement point is determined by the distance resolution. For this reason, tunnel disaster prevention equipment is used for large-scale components or large-scale linear structures represented by tunnels, and optical fiber temperature monitoring is performed in extremely narrow spaces inside equipment. The device could not be used as it is. Patent Documents 2 and 3 are known as optical fiber temperature monitoring devices applied to this narrow space.
- the optical fiber temperature sensor described in Patent Document 2 measures the local temperature by winding an optical fiber cable over a length corresponding to the distance resolution.
- the sensor unit is fixed with an adhesive together with a filler having good thermal conductivity, and is arranged in contact with the object to be measured.
- Patent Document 3 detects a target temperature by embedding an optical fiber cable in a refractory forming a crucible in a crucible induction furnace. Patent Document 3 detects only one temperature at the highest temperature position with respect to a certain amount of capacity, and is not a case that requires special measures for the temperature detection resolution of the optical fiber. . That is, Patent Document 3 is not suitable for detecting a plurality of temperatures for each local area in a narrow space.
- the conventional optical fiber temperature monitoring device can be easily applied to large-scale components and linear structures.
- the application to a limited space such as an inverter panel and a narrow range is not made.
- it is impossible to monitor serious abnormalities such as overheating of the bus bar.
- An object of the present invention is to provide an optical fiber temperature sensor capable of constantly monitoring temperatures at a plurality of desired positions in a narrow range and preventing troubles.
- an optical fiber temperature sensor is an optical fiber temperature sensor in which a temperature monitoring function is mounted on a sandwich busbar interphase insulating material, and has an insulation equivalent to or higher than the sandwich busbar interphase insulating material.
- a temperature monitoring function is mounted on a sandwich busbar interphase insulating material, and has an insulation equivalent to or higher than the sandwich busbar interphase insulating material.
- a plurality of sensing rings are formed by winding more than a length corresponding to a distance resolution without fixing the optical fiber cable to each of a plurality of ultrathin cylindrical materials, and the plurality of sensing rings form the plurality of sensing rings.
- FIG. 1 is a diagram illustrating an example of an optical fiber temperature sensor according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram illustrating another example of the optical fiber temperature sensor according to the first embodiment of the present invention.
- FIG. 3 is a sectional view of the optical fiber temperature sensor according to the first embodiment of the present invention.
- FIG. 4 is a view showing the structure of an optical fiber temperature sensor according to Embodiment 2 of the present invention.
- FIG. 5 is a diagram showing a sheet-shaped configuration according to a single busbar joint part of an optical fiber temperature sensor according to Example 2 of the present invention.
- FIG. 6 is a view showing a temperature distribution measuring apparatus using the optical fiber temperature sensor of the present invention.
- FIG. 1 is a diagram illustrating an example of an optical fiber temperature sensor according to a first embodiment of the present invention.
- FIG. 1A is a perspective view showing the structure of two sandwich bus bars 10 and an optical fiber temperature sensor 1a
- FIG. 1B is a perspective view showing the structure of the optical fiber temperature sensor 1a.
- the optical fiber temperature sensor 1a shown in FIG. 1 is installed between two sandwich bus bars 10 (phases) in the panel.
- an optical fiber temperature sensor 1a in which a curved portion 10A is formed in a sandwich bus bar 10 and a housing 1B is formed along the curved portion 10A is manufactured.
- the optical fiber temperature sensor 1a has a housing 1A, a housing 1B joined to the housing 1A, and a housing 1C joined to the housing 1B at positions facing the two sandwich bus bars 10. Yes.
- FIG. 3 is a sectional view of the optical fiber temperature sensor 1a according to the first embodiment of the present invention.
- Each of the housings 1A to 1C included in the optical fiber temperature sensor 1a is made of an extremely thin insulating sheet.
- As the casing a glass epoxy resin laminate is used as an insulating material that can be molded into an ultra-thin sheet.
- Each of the housings 1A to 1C is formed of a housing top surface 1, a housing bottom surface 2, and a housing side surface 3, and an optical fiber cable 5 is accommodated therein.
- the case side 3 is provided with a silicon sealing 4 made of a silicon sealing material.
- the entire surface of the housing is sealed with a sealing member 9 made of a silicon-based liquid insulating material. The sealing performance can be enhanced by the sealing member 9.
- a plurality of ultrathin cylindrical members 6 made of the same material as the housing material are accommodated in a plurality of locations in the housing.
- a plurality of sensing rings 7 are formed on each of the plurality of ultrathin cylindrical members 6 by winding the optical fiber cable 5 to a length corresponding to the distance resolution without fixing the optical fiber cable 5.
- the plurality of sensing rings 7 can measure the temperatures at a plurality of locations without the optical fiber cable 5 being disconnected even when receiving vibration or excessive force.
- the temperature at a desired position can be measured at a portion facing the sensing ring 7 with respect to the sandwich bus bar 10.
- a circular spacer 8 having the same configuration and the same material as the ultrathin columnar material 6 is disposed so as to fill the gap of the sensing ring 7. For this reason, even if it receives excessive force, the optical fiber temperature sensor itself is not damaged, and the temperature can be measured without the optical fiber cable 5 being disconnected.
- the sandwich bus bar 10 is very close to reduce the wiring distance, and the thickness of the optical fiber temperature sensor 1a is preferably as thin as possible.
- casing bottom surface 2 is an ultra-thin sheet
- the thickness L1 of the sensing ring 7 and the circular spacer 8 is set to 1 mm as the minimum dimension necessary for winding the optical fiber cable 5. Therefore, the total thickness of the optical fiber temperature sensor 1a is 2 mm.
- the optical fiber cable 5 is wound around the ultrathin cylindrical member 6 with a slight clearance.
- the optical fiber cable 5 shown in FIG. 1 (B) is wound around each of a plurality of ultra-thin cylindrical members 6 arranged in a row on the right side from the lower end of the optical fiber temperature sensor 1a. Is formed. Furthermore, the optical fiber cable 5 is wound around each of a plurality of ultrathin cylindrical members 6 arranged in a line on the left side from the upper end of the optical fiber temperature sensor 1a to form a plurality of sensing rings 7, and an optical fiber is formed. The cable 5 is returned to the lower end of the optical fiber temperature sensor 1a.
- through holes 11 are provided in the case side surfaces 3 of the cases 1A to 1C, and the optical fiber cables 5 are joined to each other through the through holes 11 so that the cases 1A to 1C are connected. It is integrated.
- FIG. 2 is a diagram illustrating another example of the optical fiber temperature sensor according to the first embodiment of the present invention.
- 2A is a perspective view showing the structure of two sandwich bus bars 10a and an optical fiber temperature sensor 1b
- FIG. 2B is a perspective view showing the structure of the optical fiber temperature sensor 1b.
- the optical fiber temperature sensor 1b shown in FIG. 2 is installed between the two sandwich bus bars 10a in the panel.
- an optical fiber temperature sensor 1b in which a right-angle bent portion 10b is formed in a sandwich bus bar 10a and a right-angle bent portion 10B is formed along the right-angle bent portion 10b is manufactured.
- the right-angled bent portion 10B is provided with a through hole 11, and the optical fiber cable 5 passes through the through hole 11 to be joined between the cases, and the cases are integrated.
- the optical fiber temperature sensors 1a and 1b shown in FIGS. 1 and 2 are manufactured to have a width larger than the width of the sandwich bus bars 10 and 10a in order to improve insulation between the sandwich bus bars 10 and 10a.
- the temperature monitoring unit using the sensing ring 7 and the circular spacer 8 is provided only in a portion overlapping the sandwich bus bars 10 and 10a.
- the temperatures at a plurality of desired positions can be constantly monitored by being extremely close to the opposing sandwich bus bars 10 and 10a, and trouble can be prevented. That is, temperature changes with time can be collected at any position of the sensor ring 7. As an operation, it is possible to monitor the secular change and abnormality of the sandwich bus bars 10 and 10a by observing a temperature change tendency such as a rapid temperature change or a gradual increase in temperature.
- the ultra-thin sheet structure allows an optical fiber temperature sensor to be installed in a narrow space, and is excellent in lightness.
- the optical fiber temperature sensor can be easily replaced and detached during maintenance.
- FIG. 4 is a view showing the structure of an optical fiber temperature sensor according to Embodiment 2 of the present invention.
- the optical fiber temperature sensor 1c detects the current due to the loosening of the bolts 13 at the bus bar joints.
- the overheating of the bolt 13 caused by the concentration of the The optical fiber temperature sensor 1c is made of an extremely thin sheet and is disposed on the bus bar 12b.
- the internal structure of the optical fiber temperature sensor 1c is the same as that shown in FIG.
- a plurality of sensor rings 15 having bolt holes 14 are formed. That is, the housing of the optical fiber temperature sensor 1c is made of a glass epoxy resin laminate, and a bolt hole 14 (through hole) that matches the diameter of the bolt 13 is formed on the housing surface of the optical fiber temperature sensor 1c that contacts the bus bar 12b. It is formed and has a function as a glass epoxy washer.
- each of the plurality of ultra-thin cylindrical members 6 is provided with a bolt hole 14 for mounting a bolt that matches the diameter of the bolt 13, and the bolt 13 passes through the bolt hole 14 into the bus bar 12 a and the bus bar 12 b. Bolted.
- the optical fiber temperature sensor 1c can monitor overheating of the bolt 13 due to current concentration due to loosening of the bolt 13 at the bus bar joint.
- FIG. 5 is a view showing a sheet-shaped configuration in accordance with a single busbar joint part of an optical fiber temperature sensor according to Example 2 of the present invention.
- 5A is a perspective view of the optical fiber temperature sensor
- FIG. 5B is a cross-sectional view of the optical fiber temperature sensor.
- the optical fiber cable 5 is guided from a measuring device (not shown) to the housing 16, and the optical fiber cable 5 is wound around the ultrathin columnar material 6 in the housing 16 to form a sensor ring 15. Yes.
- a bolt 13 is inserted through the sensor ring 15 and the bolt 13 is bolted to the bus bar 12a and the bus bar 12b, thereby functioning as a glass epoxy washer having a temperature sensing function as in FIG. Can be made into a shape.
- FIG. 6 is a block diagram showing a temperature distribution measuring apparatus using the optical fiber temperature sensor of the present invention. A temperature distribution measurement process using an optical fiber temperature sensor will be described with reference to FIG.
- the temperature distribution measuring device includes a pulse generator 24, a light source 25, an optical spectrometer 26, a light receiver 27, a data processing unit 28, and a data display unit 29.
- the pulse generator 24 generates a pulse signal and outputs the pulse signal to the light source 25.
- the light source 25 outputs an optical signal corresponding to the pulse signal from the pulse generator 24 to the optical spectrometer 26.
- the optical spectrometer 26 outputs the optical signal from the light source 25 to the optical fiber cables 30 corresponding to the number of sensors of the sandwich bus bar 10 and the joining bolt.
- the optical fiber temperature sensor of Example 1 and Example 2 can be provided at a time with one measuring apparatus.
- the optical spectrometer 26 sends optical signals to the optical fiber cables 30 for the number of sensors, and outputs optical signals sent from the optical fiber cables 30 for the number of sensors to the light receiver 27.
- the data processing unit 28 measures the temperature distribution at the desired position based on the temperature information of the optical fiber temperature sensor included in the optical fiber cable 30 based on the optical signal from the light receiver 27, and the data display unit 29 displays the temperature at the desired position. Display the distribution.
- the present invention can also be applied to cubicle type high-voltage power distribution equipment where troubles such as typhoons, rain, and dust, and troubles due to induction magnetic fields can be considered.
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Abstract
Description
この狭小空間に光ファイバ温度監視装置を適用したものとして特許文献2、特許文献3が知られている。
図1は本発明の実施例1に係る光ファイバ温度センサの一例を示す図である。図1(A)は2つのサンドイッチブスバー10と光ファイバ温度センサ1aとの構造を示す斜視図であり、図1(B)は光ファイバ温度センサ1aの構造を示す斜視図である。
図4は本発明の実施例2に係る光ファイバ温度センサの構造を示す図である。
Claims (3)
- サンドイッチブスバー相間絶縁材に温度監視機能を実装した光ファイバ温度センサであって、
前記サンドイッチブスバー相間絶縁材と同等以上の絶縁材質を用いた極薄型シートからなる筐体内に光ファイバケーブルを収納して形成され、
筐体材料と同材料からなる複数の極薄円柱状材が前記筐体内の複数の箇所に収納され、前記複数の極薄円柱状材の各々に前記光ファイバケーブルを固定せずに距離分解能に相当する長さ以上に巻回することにより複数のセンシングリングを形成し、前記複数のセンシングリングにより前記複数の箇所の温度を測定し、
筐体側面部をシリコンシーリングし、前記筐体の表面全体をシリコン系の液体絶縁材料からなる密封部材により密封することを特徴とする光ファイバ温度センサ。 - 前記センシングリングの空隙を埋めるように前記極薄円柱状材と同一構成のスペーサを配置することを特徴とする請求項1記載の光ファイバ温度センサ。
- 第1のブスバーと第2のブスバーとを接合するボルトの温度を監視する光ファイバ温度センサであって、
絶縁材質を用いた極薄型シートからなる筐体内に光ファイバケーブルを収納して形成され、
筐体材料と同材料からなる複数の極薄円柱状材が前記筐体内の複数の箇所に収納され、前記複数の極薄円柱状材の各々に前記光ファイバケーブルを固定せずに距離分解能に相当する長さ以上に巻回することにより複数のセンシングリングを形成し、前記複数のセンシングリングにより前記複数の箇所の温度を測定し、
筐体側面部をシリコンシーリングし、前記筐体の表面全体をシリコン系の液体絶縁材料からなる密封部材により密封し、
前記複数のセンサリングの各々のセンサリング内に前記ボルトを装着するための貫通穴を持つことを特徴とする光ファイバ温度センサ。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/405,982 US9810588B2 (en) | 2012-06-06 | 2012-06-06 | Optical fiber temperature sensor |
EP12878347.9A EP2860502B1 (en) | 2012-06-06 | 2012-06-06 | Optical fiber thermal sensor |
PCT/JP2012/064525 WO2013183126A1 (ja) | 2012-06-06 | 2012-06-06 | 光ファイバ温度センサ |
CN201280073665.4A CN104335019B (zh) | 2012-06-06 | 2012-06-06 | 光纤温度传感器 |
KR1020147036641A KR101625327B1 (ko) | 2012-06-06 | 2012-06-06 | 광파이버 온도 센서 |
JP2014519747A JP5932996B2 (ja) | 2012-06-06 | 2012-06-06 | 光ファイバ温度センサ |
Applications Claiming Priority (1)
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PCT/JP2012/064525 WO2013183126A1 (ja) | 2012-06-06 | 2012-06-06 | 光ファイバ温度センサ |
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WO2013183126A1 true WO2013183126A1 (ja) | 2013-12-12 |
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PCT/JP2012/064525 WO2013183126A1 (ja) | 2012-06-06 | 2012-06-06 | 光ファイバ温度センサ |
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US (1) | US9810588B2 (ja) |
EP (1) | EP2860502B1 (ja) |
JP (1) | JP5932996B2 (ja) |
KR (1) | KR101625327B1 (ja) |
CN (1) | CN104335019B (ja) |
WO (1) | WO2013183126A1 (ja) |
Cited By (2)
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JP2017530062A (ja) * | 2014-07-25 | 2017-10-12 | エスエイビーミラー パブリック リミテッド カンパニーSabmiller Plc | パッケージ |
CN110319951A (zh) * | 2019-07-18 | 2019-10-11 | 华北电力科学研究院有限责任公司 | 封闭母线的温度监测系统及方法 |
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JP6313452B2 (ja) * | 2015-04-20 | 2018-04-18 | エスゼット ディージェイアイ テクノロジー カンパニー リミテッドSz Dji Technology Co.,Ltd | センサ動作を熱的に調節するシステム、方法および無人航空機 |
US10741313B1 (en) | 2019-02-06 | 2020-08-11 | Eaton Intelligent Power Limited | Bus bar assembly with integrated surge arrestor |
WO2021112422A1 (ko) * | 2019-12-05 | 2021-06-10 | 엘에스일렉트릭(주) | 광섬유 케이블 온도측정 장치 |
KR102372176B1 (ko) * | 2020-05-26 | 2022-03-08 | 엘에스일렉트릭(주) | 광섬유 케이블 온도측정 장치 |
KR102326331B1 (ko) * | 2019-12-05 | 2021-11-15 | 엘에스일렉트릭 (주) | 패널형 다단 온도측정 장치 |
KR20230064897A (ko) * | 2021-11-04 | 2023-05-11 | 엘에스일렉트릭(주) | 온도 측정 기구 |
KR20230110062A (ko) | 2022-01-14 | 2023-07-21 | 엘에스일렉트릭(주) | 상태 감지 모듈, 가이드 부재 및 이를 포함하는 전력 기기 |
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CN110319951A (zh) * | 2019-07-18 | 2019-10-11 | 华北电力科学研究院有限责任公司 | 封闭母线的温度监测系统及方法 |
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JPWO2013183126A1 (ja) | 2016-01-21 |
KR101625327B1 (ko) | 2016-05-27 |
JP5932996B2 (ja) | 2016-06-08 |
CN104335019A (zh) | 2015-02-04 |
US20150285692A1 (en) | 2015-10-08 |
EP2860502A4 (en) | 2016-02-24 |
US9810588B2 (en) | 2017-11-07 |
CN104335019B (zh) | 2016-11-16 |
KR20150017366A (ko) | 2015-02-16 |
EP2860502A1 (en) | 2015-04-15 |
EP2860502B1 (en) | 2017-04-05 |
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