WO2003060454A1 - Dispositif de mesure - Google Patents

Dispositif de mesure Download PDF

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Publication number
WO2003060454A1
WO2003060454A1 PCT/EP2003/000261 EP0300261W WO03060454A1 WO 2003060454 A1 WO2003060454 A1 WO 2003060454A1 EP 0300261 W EP0300261 W EP 0300261W WO 03060454 A1 WO03060454 A1 WO 03060454A1
Authority
WO
WIPO (PCT)
Prior art keywords
measuring device
cable
sensor
sensor element
filling
Prior art date
Application number
PCT/EP2003/000261
Other languages
German (de)
English (en)
Inventor
Roland Wolf
Original Assignee
Fibre Optics Ct Gmbh
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 Fibre Optics Ct Gmbh filed Critical Fibre Optics Ct Gmbh
Priority to EP03729450A priority Critical patent/EP1468261A1/fr
Priority to AU2003215537A priority patent/AU2003215537A1/en
Priority to DE10390147T priority patent/DE10390147D2/de
Publication of WO2003060454A1 publication Critical patent/WO2003060454A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Definitions

  • a moisture sensor is known from DE-A1 -43 09 41 1, which is part of an electrical or optical cable and is used to detect moisture ingress in plastic-coated cables. Either a copper wire or an optical wire is used as the moisture sensor, which comes into contact with the moisture when it has dissolved the cable sheath material surrounding it and is then activated.
  • the entry of moisture can be determined by measuring the decrease in the insulation resistance of a signaling wire and when using an optical sensor by measuring the increase in attenuation or the reflection in the signaling wire.
  • FIG. 8 shows a cross section through a further optical cable used as a sensor with a cable jacket according to FIG. 3,
  • FIG. 23 shows a perspective view of a further optical cable used as a sensor with the type of cable sheath of FIG. 19, with a sensor element, a helical spring made of plastic and a filling material
  • 24 is a perspective view of a sensor cable similar to FIG. 23 with an optical waveguide enclosed in a filling element
  • the cable jacket 1 protects the sensor cable laid in the ground or on racks against the ingress of water into the cable core and prevents a possible change in damping in the primary-coated single-mode fibers used as sensor elements.
  • damping In the event of fire, there is a local shrinkage effect or when certain hydrocarbon compounds occur swelling and / or embrittlement of the plastics take place, with the result that the sensor element is exposed to fiber stress caused by pressure or bending, and thus this disturbance can be measured as a change in damping.
  • FIG. 16 shows the sensor cable of FIG. 15 in the activated state, the sensor elements 5 ′ being mechanically stressed due to the swelling of the swelling element 24 against the fixed core winding 21.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

La présente invention concerne un dispositif de mesure destiné à déterminer les fuites dans des installations de chauffage collectif, des canalisations ou des réservoirs, et à détecter des incendies dans des tunnels au moyen d'un capteur de mesure. En tant que capteur de mesure est utilisé un câble de détection dans lequel est noyé, dans un matériau d'encastrement, au moins un élément de détection se présentant sous la forme d'une fibre de verre unimodale, le câble de détection s'étendant dans l'isolation de la tuyauterie des installations de chauffage collectif ou à proximité des canalisations, réservoirs ou tunnels. Différents éléments constitutifs du câble sont constitués d'un matériau qui s'oxyde, se dilate ou se fragilise au contact de l'eau ou de certains composés hydrocarbures et conduisent ainsi à une déformation de l'élément de détection qui provoque l'augmentation de l'amortissement de l'élément de détection. A l'extrémité du câble de détection se trouve un système de mesure d'amortissement mesurant l'augmentation d'amortissement de l'élément de détection.
PCT/EP2003/000261 2002-01-15 2003-01-14 Dispositif de mesure WO2003060454A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03729450A EP1468261A1 (fr) 2002-01-15 2003-01-14 Dispositif de mesure
AU2003215537A AU2003215537A1 (en) 2002-01-15 2003-01-14 Measuring device
DE10390147T DE10390147D2 (de) 2002-01-15 2003-01-14 Messvorrichtung

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE10201424.8 2002-01-15
DE10201424 2002-01-15
DE10210552 2002-03-09
DE10210552.9 2002-03-09
DE10213406 2002-03-26
DE10213406.5 2002-03-26

Publications (1)

Publication Number Publication Date
WO2003060454A1 true WO2003060454A1 (fr) 2003-07-24

Family

ID=27214699

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/000261 WO2003060454A1 (fr) 2002-01-15 2003-01-14 Dispositif de mesure

Country Status (4)

Country Link
EP (1) EP1468261A1 (fr)
AU (1) AU2003215537A1 (fr)
DE (1) DE10390147D2 (fr)
WO (1) WO2003060454A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007119056A1 (fr) * 2006-04-18 2007-10-25 Dunlop Oil & Marine Limited Detecteur de fuite
EP2273171A1 (fr) * 2004-12-13 2011-01-12 Smart Pipe Company, LP. Procédé de détection de fuite dans un conduit
WO2021094937A1 (fr) * 2019-11-11 2021-05-20 Ecotech S.R.L. Tuyau pré-isolé

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245753A2 (fr) * 1986-05-09 1987-11-19 Fujikura Ltd. Câble à fibre optique de détection d'une pénétration d'eau
EP0492187A2 (fr) * 1990-12-21 1992-07-01 Delphi Automotive Systems Deutschland GmbH Câble de localisation de fluides
GB2273352A (en) * 1992-11-27 1994-06-15 Samsung Electronics Co Ltd Water penetration detecting apparatus for optical fibres
DE4309411A1 (de) * 1993-03-19 1994-09-22 Siemens Ag Elektrisches oder optisches Kabel mit einem Feuchtigkeitssensor
JPH07167735A (ja) * 1993-12-13 1995-07-04 Nkk Corp ガス漏洩検知装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0245753A2 (fr) * 1986-05-09 1987-11-19 Fujikura Ltd. Câble à fibre optique de détection d'une pénétration d'eau
EP0492187A2 (fr) * 1990-12-21 1992-07-01 Delphi Automotive Systems Deutschland GmbH Câble de localisation de fluides
GB2273352A (en) * 1992-11-27 1994-06-15 Samsung Electronics Co Ltd Water penetration detecting apparatus for optical fibres
DE4309411A1 (de) * 1993-03-19 1994-09-22 Siemens Ag Elektrisches oder optisches Kabel mit einem Feuchtigkeitssensor
JPH07167735A (ja) * 1993-12-13 1995-07-04 Nkk Corp ガス漏洩検知装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 10 30 November 1995 (1995-11-30) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2273171A1 (fr) * 2004-12-13 2011-01-12 Smart Pipe Company, LP. Procédé de détection de fuite dans un conduit
WO2007119056A1 (fr) * 2006-04-18 2007-10-25 Dunlop Oil & Marine Limited Detecteur de fuite
EA013831B1 (ru) * 2006-04-18 2010-08-30 Данлоп Ойл Энд Марин Лимитед Детектор утечки с использованием оптического волокна
US8064738B2 (en) 2006-04-18 2011-11-22 Dunlop Oil & Marine Limited Leak detector using an optical fibre
WO2021094937A1 (fr) * 2019-11-11 2021-05-20 Ecotech S.R.L. Tuyau pré-isolé

Also Published As

Publication number Publication date
EP1468261A1 (fr) 2004-10-20
AU2003215537A1 (en) 2003-07-30
DE10390147D2 (de) 2004-11-11

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