WO2015136494A1 - Procédé et appareil pour l'installation de capteurs à fibre optique sur des tuyaux - Google Patents

Procédé et appareil pour l'installation de capteurs à fibre optique sur des tuyaux Download PDF

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Publication number
WO2015136494A1
WO2015136494A1 PCT/IB2015/051852 IB2015051852W WO2015136494A1 WO 2015136494 A1 WO2015136494 A1 WO 2015136494A1 IB 2015051852 W IB2015051852 W IB 2015051852W WO 2015136494 A1 WO2015136494 A1 WO 2015136494A1
Authority
WO
WIPO (PCT)
Prior art keywords
onto
pipeline
positioning
optical fiber
optical fibers
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.)
Ceased
Application number
PCT/IB2015/051852
Other languages
English (en)
Inventor
Maurizio MIRABILE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OPTOSENSING Srl
Original Assignee
OPTOSENSING Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OPTOSENSING Srl filed Critical OPTOSENSING Srl
Publication of WO2015136494A1 publication Critical patent/WO2015136494A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
    • G02B6/54—Underground or underwater installation; Installation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/002—Survey of boreholes or wells by visual inspection
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency
    • E21B47/135—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency using light waves, e.g. infrared or ultraviolet waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3608—Fibre wiring boards, i.e. where fibres are embedded or attached in a pattern on or to a substrate, e.g. flexible sheets
    • G02B6/3612—Wiring methods or machines

Definitions

  • the present invention relates to a process for the installation of optical fiber sensors onto pipes and, more specifically, to a process for the installation of optical fiber sensors along a pipe.
  • the object of the present invention it is also an apparatus to perform the above process.
  • optical fiber sensors have gained an important role in different fields of application, such as in the field of structural monitoring or in the field of environmental monitoring. This success is due to the large possibility that these sensors offer to sense/detect the physical quantity of interest (i.e., such as temperature and/or strain), with continuity and over long distances.
  • physical quantity of interest i.e., such as temperature and/or strain
  • optical fiber sensors For example, as described by J. Dakin and B. Culshaw in "Optical fiber sensors", Artech House, Boston, 1997 ) .
  • the deformation systems based on deploying an optical fiber require that the fiber itself be mechanically constrained to the structure to be monitored, by attaching the former to the latter by means of adhesive or otherwise.
  • the manual installation of the fibers also presents the drawback of being subject to errors in the angular positioning of the fiber onto the pipe, which affect the quality of the data obtained from the readings of deformation.
  • the aim of the present invention is to solve the aforesaid drawbacks by providing a systematic process for the automatic positioning of optical fiber sensors along pipes, and which process ensures reliability and repeatability.
  • Another object of the present invention is to provide an apparatus which automatically realize the above process.
  • the present invention provides a process and an apparatus which allow:
  • the present invention provides a process and an apparatus substantially according to the appended claims.
  • Figure 1 is a perspective schematic view of a pipe onto which optical fibers have been applied according to the process of the present invention
  • Figure 2 is a front schematic view of the apparatus for the positioning of optical fibers onto a pipeline and according to the present invention
  • Figure 3 is a perspective schematic view from above and showing a part of the apparatus of the present invention in detail;
  • Figure 4 is a generic perspective view from one side of a part of the apparatus of the present invention.
  • Figure 5 is a perspective view showing in detail a part of the apparatus of the present invention.
  • Figure 6 is perspective partial view showing in detail a part of the apparatus of the present invention when positioned onto a pipe;
  • Figure 7 is a schematic view showing logic control of the apparatus of the present invention.
  • Figure 8 is a schematic view showing a function of the apparatus of the present invention.
  • the process comprises the following main steps:
  • the invention provides an automated apparatus which is fitted both to perform the cleansing of the surface pipe, and to perform the positioning of the optical fiber onto the pipe, and the bonding thereof to the surface of the pipe, as well as the positioning of an eventual protective sheath (coating) of the fibers.
  • the apparatus be able to place more than one fiber along the longitudinal axis of the pipe and in an arrangement of 90° or 120° spaced one relative to another .
  • the same is equipped with a verifying system for checking the continuity of the optical fibers during the installing steps thereof onto the pipe, so as to be able to perform any "splicing" operations of the fiber to be needed and well before that the adhesive has set. More precisely, in case of a part of the fiber results damaged (interrupted) during the positioning step onto the pipe, an alarm system immediately notify an operator, and allowing the latter for promptly intervene.
  • the bonding system of the fibers onto the pipeline is dimensioned as per the pumping area of the glue, according to the type of pipe onto which the fibers must be positioned. In fact, for example, if the fibers are to be positioned onto a steel pipe having no lining thereon, it will be required a mono or bi-component polyurethane or epoxy adhesive.
  • the adhesive pumping section i.e., area
  • the adhesive pumping section i.e., area
  • the supplying of the fiber onto the pipe represents the most delicate step of the whole process of implementation .
  • excessive tension applied to the fiber may exert to the same an excessive stress (strain), and limit the sensing field (range) due to excessive pre-tension and, in the worst case, determining the break.
  • the apparatus comprises a system that is composed of three aluminum coils rotatable mounted onto a shaft, through polymeric sliding bearings.
  • the choice of this type of bearing it is determined by the need of allowing the quick removal of a coil for the replacement thereof upon ending of the fiber to be installed.
  • each fiber coming from the respective coil is guided via a copper or steel tube, inside of which a Teflon tube it is inserted for the easing sliding of the optical fiber therein.
  • a conical inserting section capable of avoiding abnormal friction associated with the horizontal displacement of the fiber onto the spool during its deployment.
  • the optical fiber is then guided through the terminal Teflon member up to the exact point where the fiber has to be positioned onto the pipe, and without exposing the same to any kind of interference that may cause breakage thereof.
  • the apparatus provides the positioning of a protective sheath (or coating) onto the fiber, and in order to protect it from subsequent stresses that could damage the same.
  • the "coating" will be positioned according to the type of pipe onto which the fiber is positioned, by covering the latter with a polyurethane structural sheath or with a polyurethane adhesive tape.
  • the polyurethane sheath can be positioned via a nozzle system which provides for its positioning downstream of the bonding of the fiber onto the pipe.
  • the pumping unit features will vary according to the type of material (glue) to be deposited.
  • the apparatus also comprises an automatic displacing unit, which provides for the following functions:
  • control unit acquires the values relating to the inclination of the apparatus with respect to the transversal axis through a tilt sensor, and maintains the apparatus positioned in an exact horizontal position by controlling the rotating speed of a couple of displacing motors in a differential manner, and then correlates the pumping rate for dispensing glue with the moving speed of the apparatus.
  • the continuity of an installed optical fiber is a key element in the whole process of quality control during the installation steps. As a matter of facts, the breakage of a fiber would compromise the whole sensing operation of the measuring system.
  • each coil there is provided a sensing circuit capable of detecting the continuity of the installed fiber, and to transmit the relevant alarm signal to the control unit (PLC) in the event that an interruption is detected.
  • PLC control unit
  • the continuity monitoring unit operates according to the following scheme:
  • a laser emitter it is connected at the free end of the fiber to be installed;
  • the detecting circuits provided within each coil are connected to the respective ends of the fibers, and detect the laser beam transmitted by the emitter connected to the free ends of the fibers (starting point of installation) ;
  • the circuit detects the absence of the signal coming from the laser source and transmits an alarm (via ZigBee communication) to the PLC, the former activates an audible alarm and indicates which of the three fibers is interrupted.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

L'invention concerne un procédé pour l'installation de capteurs à fibre optique sur des canalisations, le procédé est caractérisé en ce qu'il comprend les étapes suivantes : nettoyer une partie surface de la canalisation au niveau d'une partie surface où lesdits capteurs à fibre optique doivent être appliqués ; étaler, sur ladite partie surface de ladite canalisation, une couche d'adhésif ; positionner, avec une tension contrôlée, une ou plusieurs fibres optiques sur ladite couche d'adhésif et sur toute la longueur de ladite canalisation ; et commander le positionnement desdites une ou plusieurs fibres optiques le long de ladite canalisation, en positionnant ladite ou lesdites fibres optiques sur toute la longueur prédéterminée de ladite canalisation. L'invention concerne aussi un appareil pour mettre en œuvre le procédé.
PCT/IB2015/051852 2014-03-13 2015-03-13 Procédé et appareil pour l'installation de capteurs à fibre optique sur des tuyaux Ceased WO2015136494A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM20140128 2014-03-13
ITRM2014A000128 2014-03-13

Publications (1)

Publication Number Publication Date
WO2015136494A1 true WO2015136494A1 (fr) 2015-09-17

Family

ID=50819871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/051852 Ceased WO2015136494A1 (fr) 2014-03-13 2015-03-13 Procédé et appareil pour l'installation de capteurs à fibre optique sur des tuyaux

Country Status (1)

Country Link
WO (1) WO2015136494A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023123241A (ja) * 2022-02-24 2023-09-05 鹿島建設株式会社 光ファイバケーブル設置装置及び光ファイバケーブル設置方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090308475A1 (en) * 2005-01-12 2009-12-17 Stringfellow William D Methods and systems for in situ manufacture and installation of non-metallic high pressure pipe and pipe liners
WO2011039592A1 (fr) 2009-09-29 2011-04-07 Eni S.P.A. Procédé pour installation de capteurs à fibres optiques le long de pipelines utilisés pour le transport de fluides
WO2012012362A2 (fr) * 2010-07-20 2012-01-26 Uraseal, Inc. Fixation d'une ligne à une surface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090308475A1 (en) * 2005-01-12 2009-12-17 Stringfellow William D Methods and systems for in situ manufacture and installation of non-metallic high pressure pipe and pipe liners
WO2011039592A1 (fr) 2009-09-29 2011-04-07 Eni S.P.A. Procédé pour installation de capteurs à fibres optiques le long de pipelines utilisés pour le transport de fluides
WO2012012362A2 (fr) * 2010-07-20 2012-01-26 Uraseal, Inc. Fixation d'une ligne à une surface

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CARLOS BORDA; MARC NIKLES; ETIENNE ROCHAT; GRECHANOV ALEXANDER; ALEXANDER NAUMOV; VALERIY VELIKODNEV: "Continuous Real-Time Pipes Deformation, 3D Positioning and Ground Movement Monitoring Along The Pipe", SAKHALIN-KHABAROVSK-VLADIVOS 8TH TECHNOLOGY CONFERENCE, 2013
J. DAKIN; B. CULSHAW: "Optical fiber sensors", 1997, ARTECH HOUSE
R. BERNINI; A. MINARDO; L. ZENI: "Vectorial dislocation monitoring of pipes by use of Brillouin-based optical fiber sensors", SMART MATER. STRUCT., vol. 17, 2008, pages 015 - 006

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023123241A (ja) * 2022-02-24 2023-09-05 鹿島建設株式会社 光ファイバケーブル設置装置及び光ファイバケーブル設置方法
JP7752073B2 (ja) 2022-02-24 2025-10-09 鹿島建設株式会社 光ファイバケーブル設置装置及び光ファイバケーブル設置方法

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