WO2023055253A1 - Способ измерения прогиба протяженного вертикально направленного канала - Google Patents
Способ измерения прогиба протяженного вертикально направленного канала Download PDFInfo
- Publication number
- WO2023055253A1 WO2023055253A1 PCT/RU2021/000552 RU2021000552W WO2023055253A1 WO 2023055253 A1 WO2023055253 A1 WO 2023055253A1 RU 2021000552 W RU2021000552 W RU 2021000552W WO 2023055253 A1 WO2023055253 A1 WO 2023055253A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- fiber
- sensor
- optic
- fibre
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005452 bending Methods 0.000 title abstract 4
- 239000000835 fiber Substances 0.000 claims description 29
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 230000005855 radiation Effects 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
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
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
Definitions
- the present invention relates to measuring technology and can be used to implement a method for measuring the deflection of extended vertically directed channels.
- the closest technical solution to the claimed method is a method for measuring the deflection of the technological channel of a nuclear reactor, including placing a carrier element with at least one fiber optic sensor in the central tube of the fuel assembly, supplying a light signal through the fiber optic lines of the sensor and recording the deflection of the central tube of the fuel assembly in the form of profilograms by analyzing the reflected light signals (RF patent No. 2626301, publication date 07/25/2017, IPC G01B 5/20).
- fiber-optic strain sensors are used, which are Bragg gratings embedded at several levels in the structure of a radiation-resistant quartz optical fiber.
- laser radiation with a wavelength from 800 nm to 1600 nm (800 * 10' 9 m to 1600 * 10' 9 m) is used, and a flexible hollow rod is used as a carrier element, inside which fiber-optic strain sensors are placed.
- the technological channel is deflected, the central tube of the fuel assembly is deflected, and, consequently, the flexible rod with fiber-optic sensors located in the central tube is deflected, while tension or compression forces act on the fiber-optic strain gauges.
- the wavelength, reflected Bragg grating changes. This change is recorded by a photodetector and analyzed using software installed on the computer.
- the disadvantage of the known method for measuring the deflection of the technological channel of a nuclear reactor is the complex and time-consuming technology for manufacturing a fiber-optic strain sensor, associated with the technically complex implementation of microscopic dots with a changed refractive index in a radiation-resistant quartz optical fiber, forming a Bragg grating.
- the task to be solved by the present invention is to create a method for measuring the deflection of vertically directed and technological long-length channels, which makes it possible to exclude the use of a radiation-resistant quartz optical fiber with microscopic dots with a changed refractive index, forming a Bragg grating, the manufacture of which includes a complex and time-consuming the technological operation of obtaining the specified microscopic points while maintaining the possibility of obtaining reliable information about the change in the geometric parameters of the technological channel during its operation.
- the technical result of the present invention is the simplification of measuring the deflection of a vertically directed channel while maintaining the measurement accuracy.
- the specified technical result in the claimed method for measuring the deflection of an extended vertically directed channel including placing inside the channel fixed at the end of a flexible hollow carrier rod, at least one fiber optic sensor, supplying a light signal through fiber optic lines connected to the sensor, registering reflected light signals using a photodetector connected to fiber-optic lines and determining the channel deflection based on the analysis of the parameters of the light signal using a computer connected to the photodetector, is achieved by the fact that the fiber optic sensor is equipped with a gravitational pendulum suspended with the possibility of deflection at the lower end of the fiber optic sensor, the flexible hollow carrier rod with the fiber optic sensor is moved along the channel and with the help of the photodetector and the computer fixes the shift of the interference pattern of the reflected light signal in the gas gap between the upper end surface of the gravitational pendulum and the lower end surface of the fiber optic lines connected to the photodetector and fixed on the sensor, which changes when the fiber optic sensor is moved due to the deviation of the gravitational
- FIG. 1 shows a general diagram of a device for implementing a method for measuring the deflection of an extended vertically directed channel
- FIG. 2 is a general view of a fiber optic sensor for measurements
- FIG. 3 shows the layout of the fiber optic sensor in a straight vertically directed channel for implementing the method for measuring the channel deflection
- FIG. 4 shows the layout of the fiber optic sensor in a vertically directed channel with a deflection.
- the method for measuring the deflection of an extended vertically directed channel is as follows.
- a flexible hollow bearing rod is placed at the end of which, at least at least one fiber optic sensor.
- the light signal is fed through fiber-optic lines connected to the sensor, the reflected light signal is recorded using a photodetector connected to the fiber-optic lines.
- the channel deflection is determined using a computer connected to the photodetector.
- the fiber optic sensor is equipped with a gravitational pendulum suspended with the possibility of deflection at the lower end of the fiber optic sensor, a flexible hollow carrier rod with a fiber optic sensor is moved along the channel and, using a photodetector and a computer, the shift of the interference pattern of the reflected light signal in the gas gap between the upper the end surface of the gravitational pendulum and the lower end surface of fiber optic lines connected to the photodetector and fixed on the sensor, which changes when the fiber optic sensor is moved due to the deviation of the gravitational pendulum from the axis of a curved extended vertically directed channel.
- the profilograms of changes in the gas gap are recorded for each fiber-optic line, and based on the obtained profilograms of the gas gap, the magnitude and direction of the deflection of an extended vertically directed channel from the vertical axis are calculated.
- the present invention is illustrated by an example of a specific implementation, described below.
- the given example is not the only possible one, but clearly demonstrates the possibility of achieving the claimed technical result by this set of essential features.
- the body of the fiber optic sensor 2 is rigidly connected by means of a sleeve 8 with flexible hollow bearing rod 1.
- the tube 9 and cover 10 of the body of the fiber optic sensor 2 ensure the tightness of the cavity of the fiber optic sensor 2, which is filled with an inert gas.
- the fiber optic sensor 2 deviates relative to the gravity field and, as a result, the gravity pendulum 12 deviates relative to the central axis of the fiber optic sensor 2.
- the geometric parameters of the gas gap 14 change, namely, there is a change distances between the reflective surface of the gravitational pendulum 12 and the ends of the fiber-optic lines 11, which causes a shift in the interference pattern, which is recorded by means of a photodetector 5 and analyzed at using specialized software installed on the computer 7.
- gas gap profilograms 14 are recorded.
- the proposed method can be used for measuring long vertical channels in various industries.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247003107A KR20240032881A (ko) | 2021-09-29 | 2021-12-08 | 원자로 기술 채널 굴곡 측정 방법 |
CA3225722A CA3225722A1 (en) | 2021-09-29 | 2021-12-08 | Method of measuring bending of an extended vertically directed channel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2021128445A RU2774260C1 (ru) | 2021-09-29 | Способ измерения прогиба протяженного вертикально направленного канала | |
RU2021128445 | 2021-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023055253A1 true WO2023055253A1 (ru) | 2023-04-06 |
Family
ID=85783321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2021/000552 WO2023055253A1 (ru) | 2021-09-29 | 2021-12-08 | Способ измерения прогиба протяженного вертикально направленного канала |
Country Status (3)
Country | Link |
---|---|
KR (1) | KR20240032881A (ru) |
CA (1) | CA3225722A1 (ru) |
WO (1) | WO2023055253A1 (ru) |
Citations (8)
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 |
RU2246144C2 (ru) * | 2003-04-07 | 2005-02-10 | Смоленская атомная электростанция | Способ и устройство контроля газового зазора технологического канала уран-графитового ядерного реактора |
RU2361173C2 (ru) * | 2007-08-13 | 2009-07-10 | Открытое акционерное общество "Сибирский химический комбинат" | Устройство для контроля искривления технологических каналов ядерного реактора |
DE102010000876A1 (de) * | 2009-01-19 | 2010-07-22 | Mitutoyo Corp., Kawasaki-shi | Oberflächentextur-Messvorrichtung sowie Verfahren und Programm zum Erzeugen eines Fühlermodells |
RU163742U1 (ru) * | 2014-12-17 | 2016-08-10 | Устав пристроёве техники АВ ЦР, в.в.и. | Волоконно-оптический датчик и комплект для измерения деформаций защитной оболочки ядерного реактора |
RU2626301C1 (ru) * | 2016-11-15 | 2017-07-25 | Общество с ограниченной ответственностью "Пролог" | Способ измерения искривления технологического канала ядерного реактора типа РБМК и устройство для его осуществления |
FR3045833B1 (fr) * | 2015-12-18 | 2018-02-09 | Electricite De France | Dispositif de controle et de mesure de defauts de soudure d'une paroi cylindrique et procede qui en fait usage |
KR101870381B1 (ko) * | 2017-11-21 | 2018-06-22 | 케이.엘.이.에스 주식회사 | 자체진동 보정이 가능한 원전 소구경 배관용 비접촉식 진동 모니터링 시스템 |
-
2021
- 2021-12-08 CA CA3225722A patent/CA3225722A1/en active Pending
- 2021-12-08 KR KR1020247003107A patent/KR20240032881A/ko active Search and Examination
- 2021-12-08 WO PCT/RU2021/000552 patent/WO2023055253A1/ru active Application Filing
Patent Citations (8)
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 |
RU2246144C2 (ru) * | 2003-04-07 | 2005-02-10 | Смоленская атомная электростанция | Способ и устройство контроля газового зазора технологического канала уран-графитового ядерного реактора |
RU2361173C2 (ru) * | 2007-08-13 | 2009-07-10 | Открытое акционерное общество "Сибирский химический комбинат" | Устройство для контроля искривления технологических каналов ядерного реактора |
DE102010000876A1 (de) * | 2009-01-19 | 2010-07-22 | Mitutoyo Corp., Kawasaki-shi | Oberflächentextur-Messvorrichtung sowie Verfahren und Programm zum Erzeugen eines Fühlermodells |
RU163742U1 (ru) * | 2014-12-17 | 2016-08-10 | Устав пристроёве техники АВ ЦР, в.в.и. | Волоконно-оптический датчик и комплект для измерения деформаций защитной оболочки ядерного реактора |
FR3045833B1 (fr) * | 2015-12-18 | 2018-02-09 | Electricite De France | Dispositif de controle et de mesure de defauts de soudure d'une paroi cylindrique et procede qui en fait usage |
RU2626301C1 (ru) * | 2016-11-15 | 2017-07-25 | Общество с ограниченной ответственностью "Пролог" | Способ измерения искривления технологического канала ядерного реактора типа РБМК и устройство для его осуществления |
KR101870381B1 (ko) * | 2017-11-21 | 2018-06-22 | 케이.엘.이.에스 주식회사 | 자체진동 보정이 가능한 원전 소구경 배관용 비접촉식 진동 모니터링 시스템 |
Also Published As
Publication number | Publication date |
---|---|
KR20240032881A (ko) | 2024-03-12 |
CA3225722A1 (en) | 2023-04-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7781724B2 (en) | Fiber optic position and shape sensing device and method relating thereto | |
US20060013523A1 (en) | Fiber optic position and shape sensing device and method relating thereto | |
US5818982A (en) | Fiber optic sensor based upon buckling of a freely suspended length of fiber | |
US7772541B2 (en) | Fiber optic position and/or shape sensing based on rayleigh scatter | |
US6541758B2 (en) | Liquid-level gauge | |
RU2540258C1 (ru) | Устройство для измерения деформаций и способ измерения деформаций | |
US11473943B2 (en) | Optical fiber sensor | |
Llobera et al. | SU-8 optical accelerometers | |
CN105806262B (zh) | 一种基于低相干干涉技术的测斜系统及方法 | |
Marković et al. | Application of fiber-optic curvature sensor in deformation measurement process | |
RU2626301C1 (ru) | Способ измерения искривления технологического канала ядерного реактора типа РБМК и устройство для его осуществления | |
RU2774260C1 (ru) | Способ измерения прогиба протяженного вертикально направленного канала | |
WO2023055253A1 (ru) | Способ измерения прогиба протяженного вертикально направленного канала | |
RU2768260C1 (ru) | Способ измерения прогиба технологического канала ядерного реактора | |
CN208238740U (zh) | 双驼峰锥型光纤弯曲传感器 | |
RU2775863C1 (ru) | Устройство для измерения прогиба протяжённого, вертикально направленного канала | |
CN117916819A (zh) | 测量垂直方向延伸通道挠度的方法 | |
WO2023055252A1 (ru) | Устройство для измерения прогиба протяжённого вертикально направленного канала | |
Chawah et al. | Direct non-invasive measuring techniques of nanometric liquid level variations using extrinsic fiber Fabry–Perot interferometers | |
US7672545B2 (en) | Methods and apparatuses for obtaining information regarding sensors in optical paths | |
RU2783678C1 (ru) | Оптико-электронный способ измерения диаметра цилиндрического объекта | |
Mekhtiyev et al. | A Fiber-Optic Long-Base Deformometer for a System for Monitoring Rocks on the Sides of Quarries | |
Burnett et al. | Optical Fibre‐based Vectoral Shape Sensor | |
Galindez et al. | Influence of the refractive index of liquids in the speckle pattern of multimode fibers | |
Leffers et al. | Bend Sensor based on Eccentrical Bragg Gratings in Polymer Optical Fibres |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21959591 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 3225722 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 20247003107 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: P6000249/2024 Country of ref document: AE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112024001725 Country of ref document: BR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202490193 Country of ref document: EA |