BE899954A - Dispositif d'alarme pour systemes de conduits isoles. - Google Patents

Dispositif d'alarme pour systemes de conduits isoles.

Info

Publication number
BE899954A
BE899954A BE0/213170A BE213170A BE899954A BE 899954 A BE899954 A BE 899954A BE 0/213170 A BE0/213170 A BE 0/213170A BE 213170 A BE213170 A BE 213170A BE 899954 A BE899954 A BE 899954A
Authority
BE
Belgium
Prior art keywords
alarm device
duct systems
insulated duct
signal
transformer
Prior art date
Application number
BE0/213170A
Other languages
English (en)
Inventor
H Allan Laine
Original Assignee
Helmersson Rune
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
Priority to SE8306789A priority Critical patent/SE456376B/sv
Application filed by Helmersson Rune filed Critical Helmersson Rune
Priority to BE0/213170A priority patent/BE899954A/fr
Priority to CH3076/84A priority patent/CH663852A5/de
Priority to NL8402377A priority patent/NL8402377A/nl
Priority to BE0/213408A priority patent/BE900251R/fr
Priority to JP59163764A priority patent/JPS60125554A/ja
Priority to DE19843433028 priority patent/DE3433028A1/de
Priority to GB08423333A priority patent/GB2151059B/en
Priority to FR8414287A priority patent/FR2556442B1/fr
Priority to CA000465279A priority patent/CA1219312A/fr
Publication of BE899954A publication Critical patent/BE899954A/fr
Priority to US07/070,618 priority patent/US4746911A/en

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
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

Un transformateur (TR1) fournit le signal d'un oscillateur (1) par l'intermédiaire d'un élément de jonction (2) et est connecté en un point (7) à un tube (9) entouré par une isolation (10) et pourvu d'un fil d'alarme (8). En cas de modification de l'isolation du tube, le signal dans l'élément de jonction (2) est affecté, par l'intermédiaire du transformateur (TR1), et cela est détecté dans un dispositif (3) sensible au niveau, dont le signal est fourni à un comparateur (4). Le niveau d'alarme dépend de la résistance dans le fil (8).
BE0/213170A 1983-12-08 1984-06-19 Dispositif d'alarme pour systemes de conduits isoles. BE899954A (fr)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE8306789A SE456376B (sv) 1983-12-08 1983-12-08 Larmanordning vid isolerat rorsystem
BE0/213170A BE899954A (fr) 1983-12-08 1984-06-19 Dispositif d'alarme pour systemes de conduits isoles.
CH3076/84A CH663852A5 (de) 1983-12-08 1984-06-26 Alarmvorrichtung fuer anlagen mit isolierten roehren.
NL8402377A NL8402377A (nl) 1983-12-08 1984-07-27 Alarmstelsel voor geisoleerde pijpstelsels.
BE0/213408A BE900251R (fr) 1983-12-08 1984-07-27 Dispositif d'alarme pour systemes de conduits isoles.
JP59163764A JPS60125554A (ja) 1983-12-08 1984-08-02 絶縁されたパイプ系のための警報装置
DE19843433028 DE3433028A1 (de) 1983-12-08 1984-09-07 Alarmeinrichtung fuer isolierte rohrsysteme
GB08423333A GB2151059B (en) 1983-12-08 1984-09-14 Alarm apparatus for pipes
FR8414287A FR2556442B1 (fr) 1983-12-08 1984-09-18 Dispositif d'alarme pour tuyauteries isolees
CA000465279A CA1219312A (fr) 1983-12-08 1984-10-12 Dispositif d'alarme pour tuyauteries autonomes
US07/070,618 US4746911A (en) 1983-12-08 1987-07-09 Alarm device for isolated pipe systems

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8306789A SE456376B (sv) 1983-12-08 1983-12-08 Larmanordning vid isolerat rorsystem
BE0/213170A BE899954A (fr) 1983-12-08 1984-06-19 Dispositif d'alarme pour systemes de conduits isoles.
BE0/213408A BE900251R (fr) 1983-12-08 1984-07-27 Dispositif d'alarme pour systemes de conduits isoles.

Publications (1)

Publication Number Publication Date
BE899954A true BE899954A (fr) 1984-10-15

Family

ID=27158750

Family Applications (2)

Application Number Title Priority Date Filing Date
BE0/213170A BE899954A (fr) 1983-12-08 1984-06-19 Dispositif d'alarme pour systemes de conduits isoles.
BE0/213408A BE900251R (fr) 1983-12-08 1984-07-27 Dispositif d'alarme pour systemes de conduits isoles.

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE0/213408A BE900251R (fr) 1983-12-08 1984-07-27 Dispositif d'alarme pour systemes de conduits isoles.

Country Status (10)

Country Link
US (1) US4746911A (fr)
JP (1) JPS60125554A (fr)
BE (2) BE899954A (fr)
CA (1) CA1219312A (fr)
CH (1) CH663852A5 (fr)
DE (1) DE3433028A1 (fr)
FR (1) FR2556442B1 (fr)
GB (1) GB2151059B (fr)
NL (1) NL8402377A (fr)
SE (1) SE456376B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207253A1 (fr) * 1985-05-09 1987-01-07 Meier-Schenk AG (Meier-Schenk SA) Palpeur pour la détermination de lieux humides dans l'isolement thermique des tuyaux
US4939506A (en) * 1988-01-26 1990-07-03 Dresser-Rand Company Grounding brush monitor
US5134378A (en) * 1991-03-08 1992-07-28 Michael Twerdochlib System and method for detecting faults in generator bearing pedestals and seal insulation
CN100514050C (zh) * 2005-07-29 2009-07-15 华为技术有限公司 一种电路板污染检测告警方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1919802A (en) * 1929-09-25 1933-07-25 Western Electric Co Apparatus for testing insulation
US2422288A (en) * 1944-06-02 1947-06-17 Western Electric Co Apparatus for testing electrical insulation
US2759175A (en) * 1954-03-12 1956-08-14 Thomas R Spalding Leak detector for pipe joint
GB819099A (en) * 1956-06-20 1959-08-26 Colne Switchgear K & W Ltd Improvements in flame detector or flame failure protection systems
GB919517A (en) * 1958-06-04 1963-02-27 Raymond Gstalder A system for detecting, indicating and locating automatically liquid or gas leaks or excessive temperatures at separate fixed points or over a continuous length or distance
US3184730A (en) * 1962-07-30 1965-05-18 Robert H Irish Intrusion detection system
US3721898A (en) * 1968-12-04 1973-03-20 P Dragoumis Apparatus for detecting leakage from or rupture of pipes and other vessels containing fluid under pressure
GB1311472A (en) * 1969-03-18 1973-03-28 Rasmussen As E Pipe system of heat insulated pipes including means for detecting the presence of moisture
US3648282A (en) * 1970-02-17 1972-03-07 John B Kelly Alarm signal apparatus to indicate damage to the insulation of an electrical cable as it is being laid underground
GB1343767A (en) * 1970-02-26 1974-01-16 Emi Ltd Fluid discrimination devices
US4013924A (en) * 1970-03-19 1977-03-22 A/S E. Rasmussen Methods and means for detecting the presence of moisture adjacent insulated pipes
US3731295A (en) * 1971-03-17 1973-05-01 Gen Electric Leak detector for enclosed electrical apparatus
GB1344691A (en) * 1971-04-30 1974-01-23 Nat Res Dev Tuned circuit monitor for structural materials
JPS4970183A (fr) * 1972-11-10 1974-07-06
GB1455415A (en) * 1973-03-26 1976-11-10 Rasmussen As E Insulated pipe system having means for detection of moisture in the insulation thereof
DE2337983C2 (de) * 1973-07-26 1984-03-22 Bernd 6271 Limbach Brandes Ortungs- und Überwachungsschaltung
JPS5236290A (en) * 1975-09-18 1977-03-19 Power Reactor & Nuclear Fuel Dev Corp Liquid sodium leakage detector
US4157541A (en) * 1977-10-26 1979-06-05 Malor Mfg. Inc. Device for detecting cable insulation faults
GB2023896A (en) * 1978-06-23 1980-01-03 Moeller As I C Alarm systems
SE414532B (sv) * 1979-06-18 1980-08-04 Blom H Anordning vid en fjerrvermeledning samt sett att framstella en sadan anordning
US4422034A (en) * 1980-01-22 1983-12-20 Toyo Sushinki Kabushiki Kaisha Method for measuring insulation resistance and device therefor
FR2524614A1 (fr) * 1982-04-02 1983-10-07 Radiotechnique Compelec Procede utilisant l'effet redresseur d'une flamme pour surveiller la marche d'un bruleur, et dispositif pour mettre en oeuvre ce procede

Also Published As

Publication number Publication date
SE8306789D0 (sv) 1983-12-08
JPH0363700B2 (fr) 1991-10-02
US4746911A (en) 1988-05-24
SE8306789L (sv) 1985-06-09
FR2556442A1 (fr) 1985-06-14
FR2556442B1 (fr) 1987-08-28
SE456376B (sv) 1988-09-26
GB2151059A (en) 1985-07-10
GB2151059B (en) 1987-01-28
DE3433028C2 (fr) 1987-05-27
JPS60125554A (ja) 1985-07-04
BE900251R (fr) 1984-11-16
GB8423333D0 (en) 1984-10-17
NL8402377A (nl) 1985-07-01
DE3433028A1 (de) 1985-06-20
CA1219312A (fr) 1987-03-17
CH663852A5 (de) 1988-01-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: HELMERSSON RUNE

Effective date: 19880630