BE900251R - Dispositif d'alarme pour systemes de conduits isoles. - Google Patents
Dispositif d'alarme pour systemes de conduits isoles.Info
- Publication number
- BE900251R BE900251R BE0/213408A BE213408A BE900251R BE 900251 R BE900251 R BE 900251R BE 0/213408 A BE0/213408 A BE 0/213408A BE 213408 A BE213408 A BE 213408A BE 900251 R BE900251 R BE 900251R
- Authority
- BE
- Belgium
- Prior art keywords
- alarm device
- duct systems
- insulated duct
- signal
- transformer
- Prior art date
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)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Examining Or Testing Airtightness (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measurement Of Current Or Voltage (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Housings And Mounting Of Transformers (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).
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. |
BE0/213408A BE900251R (fr) | 1983-12-08 | 1984-07-27 | Dispositif d'alarme pour systemes de conduits isoles. |
NL8402377A NL8402377A (nl) | 1983-12-08 | 1984-07-27 | Alarmstelsel voor geisoleerde pijpstelsels. |
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 |
---|---|
BE900251R true BE900251R (fr) | 1984-11-16 |
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 Before (1)
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. |
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 (3)
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 |
Family Cites Families (22)
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 |
-
1983
- 1983-12-08 SE SE8306789A patent/SE456376B/sv not_active IP Right Cessation
-
1984
- 1984-06-19 BE BE0/213170A patent/BE899954A/fr not_active IP Right Cessation
- 1984-06-26 CH CH3076/84A patent/CH663852A5/de not_active IP Right Cessation
- 1984-07-27 BE BE0/213408A patent/BE900251R/fr not_active IP Right Cessation
- 1984-07-27 NL NL8402377A patent/NL8402377A/nl not_active Application Discontinuation
- 1984-08-02 JP JP59163764A patent/JPS60125554A/ja active Granted
- 1984-09-07 DE DE19843433028 patent/DE3433028A1/de active Granted
- 1984-09-14 GB GB08423333A patent/GB2151059B/en not_active Expired
- 1984-09-18 FR FR8414287A patent/FR2556442B1/fr not_active Expired
- 1984-10-12 CA CA000465279A patent/CA1219312A/fr not_active Expired
-
1987
- 1987-07-09 US US07/070,618 patent/US4746911A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3433028A1 (de) | 1985-06-20 |
CH663852A5 (de) | 1988-01-15 |
GB2151059A (en) | 1985-07-10 |
FR2556442B1 (fr) | 1987-08-28 |
SE8306789L (sv) | 1985-06-09 |
JPH0363700B2 (fr) | 1991-10-02 |
CA1219312A (fr) | 1987-03-17 |
US4746911A (en) | 1988-05-24 |
FR2556442A1 (fr) | 1985-06-14 |
GB2151059B (en) | 1987-01-28 |
BE899954A (fr) | 1984-10-15 |
JPS60125554A (ja) | 1985-07-04 |
DE3433028C2 (fr) | 1987-05-27 |
SE456376B (sv) | 1988-09-26 |
SE8306789D0 (sv) | 1983-12-08 |
NL8402377A (nl) | 1985-07-01 |
GB8423333D0 (en) | 1984-10-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: HELMERSSON RUNE Effective date: 19880630 |