EP0814444A2 - Dispositif de sécurité - Google Patents

Dispositif de sécurité Download PDF

Info

Publication number
EP0814444A2
EP0814444A2 EP97201829A EP97201829A EP0814444A2 EP 0814444 A2 EP0814444 A2 EP 0814444A2 EP 97201829 A EP97201829 A EP 97201829A EP 97201829 A EP97201829 A EP 97201829A EP 0814444 A2 EP0814444 A2 EP 0814444A2
Authority
EP
European Patent Office
Prior art keywords
gas
safety device
sensors
room
supply
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.)
Granted
Application number
EP97201829A
Other languages
German (de)
English (en)
Other versions
EP0814444B1 (fr
EP0814444A3 (fr
Inventor
Renzo Reggiani
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.)
Huberg Gasmesstechnik GmbH
Original Assignee
Huberg Gasmesstechnik 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
Priority claimed from DE1996124976 external-priority patent/DE19624976A1/de
Application filed by Huberg Gasmesstechnik GmbH filed Critical Huberg Gasmesstechnik GmbH
Publication of EP0814444A2 publication Critical patent/EP0814444A2/fr
Publication of EP0814444A3 publication Critical patent/EP0814444A3/fr
Application granted granted Critical
Publication of EP0814444B1 publication Critical patent/EP0814444B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14—Toxic gas alarms

Definitions

  • the invention relates to a safety device with at least one gas sensor arranged in a room to be monitored, which causes the supply of the fuel gas and the power supply for a complex to be supplied to be prevented when fuel gas occurs in the room, the gas sensor operation being maintained in the event of a power failure by an electrical battery .
  • Such a safety device is known from DE-A1-32 08 553.
  • a cable is led from the gas sensor to the gas main tap, to which a servomotor is assigned, which is supplied with electricity by an electric battery via a gas sensor contact and the cable when fuel gas occurs in the space to be monitored and thereby closes the gas main tap; at the same time the main power line is shut down.
  • a servomotor is assigned, which is supplied with electricity by an electric battery via a gas sensor contact and the cable when fuel gas occurs in the space to be monitored and thereby closes the gas main tap; at the same time the main power line is shut down.
  • an intrinsically safe gas detector for residential buildings is known from DE-U1-89 13 816, in which gas detection sensors are located in a room in which escaping gas is likely to accumulate first.
  • the gas detection sensors are designed to be intrinsically safe, while a device part of the gas detector comprising the supply portion is not designed to be intrinsically safe and is located in a different room than the gas sensors. In the event of a power failure in the public network, a battery continues to operate the gas detector.
  • a gas warning system is known from DE-A1-38 03 892, in which a number of pressure sensors, each measuring the gas pressure, the temperature and the amount of fuel gas emitted from a gas bottle, are connected to a central module which, depending on Disturbances of the measured values give an alarm acoustically or visually and which causes the gas delivery of the gas cylinders to be prevented.
  • gas sensors The design of gas sensors is generally known, as can be seen, for example, from the article "Sensor Technology” by Gerhard Wiegleb, published in the Franzis Electronics Book, 1986, Chapter 5, pp. 93-111.
  • the gas sensors described there can detect hydrocarbons, carbon monoxide or oxygen, among others.
  • the sensors of the known safety devices only respond to hydrocarbon gases, namely natural gas, methane or propane.
  • the object of the invention is to provide a safety device of the type mentioned, the function of which is expanded at the measuring point of the gas sensor. Furthermore, it should be possible to ascertain deliberate manipulation at the location of the gas sensor, for example the blockage of the air supply opening of the gas sensor housing.
  • the safety device is therefore very sensitive to dangerous air compositions.
  • a further embodiment of the invention is characterized in that the signals from the sensors to the means which prevent the supply of the fuel gas and the power supply are effected wirelessly, preferably by radio.
  • the safety device can be installed with minimal effort, without masonry for laying cables.
  • the safety device according to FIG. 1 (detector system) consists of three completely independent sensors 10. Each of these three sensors only reacts to a gas.
  • the first sensor 10/1 reacts to oxygen. If the measured value falls slightly below the normal value that is present in the air (20.9%), an alarm is triggered.
  • the second sensor 10/2 reacts to natural gas / propane gas.
  • the third sensor 10/3 reacts to carbon monoxide. If the CO value exceeds 100 ppm, an alarm is triggered.
  • the threshold values at which the alarm is triggered can be modified depending on the legal provisions for safety systems.
  • the detector system described above includes sensors that according to the current state of the art are already known. One aspect of the basic idea of the invention is therefore that the three sensors are housed in a single detector system. If an alarm is triggered by one of the three sensors, the power supply or main switch 12 and the gas supply in line 14 are interrupted by a solenoid valve 16, for the entire building. The signal can be transmitted from the sensor to the main switch 12 and / or the solenoid valve 16 by cable or wirelessly, for example by radio. It is particularly advantageous to send the control signals by radio, as a result of which an additional and complex cable laying is no longer necessary. The interruption of the mains voltage causes the solenoid valve to close, so that the entire gas supply is interrupted.
  • Carbon monoxide is produced in every combustion process. If such a situation occurs, an alarm is triggered and the electricity and gas supply are cut off long before a dangerous concentration of carbon monoxide can develop.
  • the oxygen sensor's job is to cut off the electricity and gas supply when there is a fire has broken out or if someone wants to shut down the entire facility (suicide).
  • the opening through which the ambient air enters the detector system and is led to the sensors is closed, e.g. by means of an adhesive tape, the sensor measures a lower oxygen content, which triggers the alarm and the power and gas supply are interrupted.
  • This sensor only reacts to methane / propane. So if, for some reason, unburned gas flows into the room, such as a leak in a pipe or an open gas tap, an alarm is triggered and the entire electricity and gas supply is cut off. This is possible because in this case the solenoid valve is no longer connected directly to the electrical current, but to the battery of the detector.
  • the solenoid valve is kept open by the battery (18) installed in the detector even in the event of a power failure (220 V) due to a defect in the power supply.
  • the detectors control the solenoid valve, which cuts off the gas supply.
  • the detectors can be equipped with optical and acoustic signal systems. The two different information (Optical and / or acoustic) are maintained by the electrical current of the system described. A detailed description of the individual detectors is unnecessary, since known and evaluated detectors can advantageously be used here.
  • the device can be equipped with currently known and customary production techniques for sensors as well as for electro valves.
  • the system also prevents fires.
  • Devices with the proposed system can be equipped with a large number of detectors, one for each room in the hazardous area, which are connected to the main detector, which is the only one that fulfills the various controls with all their functions. It is a subsidiary application because their implementation requires the use of a technology already known in the field of electrical engineering.
  • the housings of the devices in which the sensors and other devices are housed are generally known and their shape does not affect the principle of application.
  • the outer housing can be made of metal or plastic and have the shape of a three-dimensional parallelepiped, with a suitable recess for the passage of said volatile elements and with a special arrangement of the sensors inside the housing. It is also possible to house the system in different apartments of a building with a single power source (battery or the like) which is not dependent on the normal power supply.
  • FIG. 5 shows an arrangement of sensors in a housing 20 which is designed in the form of a cubic parallelepiped, but can also be designed in the form of a hemisphere and is provided with a central opening 21. Additional sensors (motion detectors) 10/1 ', 10/2', 10/2 '', 10/3 'are provided. These sensors are suspended in the middle of the housing 20 in such a way that those entering the housing 20 through the opening 21 Indoor air reaches them immediately. The sensor 10/1 detects an intentional, malicious blockage of the opening 21.

Landscapes

  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP97201829A 1996-06-22 1997-06-14 Dispositif de sécurité Expired - Lifetime EP0814444B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996124976 DE19624976A1 (de) 1995-07-06 1996-06-22 Sicherheitsvorrichtung
DE19624976 1996-06-22

Publications (3)

Publication Number Publication Date
EP0814444A2 true EP0814444A2 (fr) 1997-12-29
EP0814444A3 EP0814444A3 (fr) 1998-09-09
EP0814444B1 EP0814444B1 (fr) 2002-07-24

Family

ID=7797688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97201829A Expired - Lifetime EP0814444B1 (fr) 1996-06-22 1997-06-14 Dispositif de sécurité

Country Status (2)

Country Link
EP (1) EP0814444B1 (fr)
AT (1) ATE221234T1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2175779C1 (ru) * 2000-11-28 2001-11-10 Николаев Юрий Николаевич Способ диагностики предпожарной ситуации и предотвращения возникновения пожара
GB2364811A (en) * 2000-03-09 2002-02-06 Ascot Man Solutions Ltd Carbon monoxide monitoring system
GB2358268B (en) * 1999-10-20 2003-10-15 Gary Lewis Safety apparatus
US7021925B2 (en) * 2001-05-16 2006-04-04 Invensys Controls Limited Safety module for fuel-burning appliance, and appliance using such a module
EP2083406A1 (fr) * 2008-01-24 2009-07-29 Kamstrup A/S Mesure de consommation d'énergie électrique avec détecteur de gaz
GB2481868A (en) * 2010-07-06 2012-01-11 Nicholas Julian Jan Francis Macphail Boiler fuel supply shut off system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088986A (en) * 1976-10-01 1978-05-09 Boucher Charles E Smoke, fire and gas alarm with remote sensing, back-up emergency power, and system self monitoring
GB2105849B (en) * 1981-09-11 1985-05-15 Coal Ind Electrical gas analyser for sensing at least two gases
DK367587D0 (da) * 1987-07-14 1987-07-14 Dan Taet Odense A S Gastaethedskontrolanlaeg
IT1249197B (it) * 1991-04-29 1995-02-20 Eurogiada Srl Dispositivo di rilevazione di impurita' atmosferiche
JPH06139486A (ja) * 1992-10-29 1994-05-20 Ricoh Seiki Co Ltd ガスメータシステム
GB2294794A (en) * 1994-11-02 1996-05-08 William Michael Sheret Fuel leak monitoring apparatus
EP0714018A3 (fr) * 1994-11-25 1998-03-11 Victor John Diduck Détection d'une fuite de liquide ou de gaz et système de interruption de l'alimentation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2358268B (en) * 1999-10-20 2003-10-15 Gary Lewis Safety apparatus
GB2364811A (en) * 2000-03-09 2002-02-06 Ascot Man Solutions Ltd Carbon monoxide monitoring system
RU2175779C1 (ru) * 2000-11-28 2001-11-10 Николаев Юрий Николаевич Способ диагностики предпожарной ситуации и предотвращения возникновения пожара
US7021925B2 (en) * 2001-05-16 2006-04-04 Invensys Controls Limited Safety module for fuel-burning appliance, and appliance using such a module
EP2083406A1 (fr) * 2008-01-24 2009-07-29 Kamstrup A/S Mesure de consommation d'énergie électrique avec détecteur de gaz
GB2481868A (en) * 2010-07-06 2012-01-11 Nicholas Julian Jan Francis Macphail Boiler fuel supply shut off system
GB2481868B (en) * 2010-07-06 2018-05-02 Julian Jan Francis Macphail Nicholas Multiple hazard sensing to enable fuel supply shut of in boiler or appliances

Also Published As

Publication number Publication date
EP0814444B1 (fr) 2002-07-24
EP0814444A3 (fr) 1998-09-09
ATE221234T1 (de) 2002-08-15

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