EP2244237A1 - Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables - Google Patents

Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables Download PDF

Info

Publication number: EP2244237A1
Authority: EP; European Patent Office
Prior art keywords: shaft; mirror; displacement body; reflector; adjusting
Prior art date: 2009-04-21
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

EP09005581A

Other languages

German (de)

English (en)

Other versions

EP2244237B1 (fr

Inventor

Manfred Russwurm

Bernd Dipl-Ing. Ziems

Manfred Guderjan

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.)

Minimax GmbH and Co KG

Original Assignee

Minimax GmbH and Co KG

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.)

2009-04-21

Filing date

2009-04-21

Publication date

2010-10-27

2009-04-21 Application filed by Minimax GmbH and Co KG filed Critical Minimax GmbH and Co KG

2009-04-21 Priority to EP09005581A priority Critical patent/EP2244237B1/fr

2010-04-20 Priority to US12/799,187 priority patent/US20100265510A1/en

2010-04-20 Priority to RU2010115742/08A priority patent/RU2010115742A/ru

2010-04-20 Priority to CA2701242A priority patent/CA2701242A1/fr

2010-04-20 Priority to CN201010167068A priority patent/CN101872528A/zh

2010-10-27 Publication of EP2244237A1 publication Critical patent/EP2244237A1/fr

2012-07-04 Application granted granted Critical

2012-07-04 Publication of EP2244237B1 publication Critical patent/EP2244237B1/fr

Status Not-in-force legal-status Critical Current

2029-04-21 Anticipated expiration legal-status Critical

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Classifications

- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/002—Generating a prealarm to the central station
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
- G08B29/043—Monitoring of the detection circuits of fire detection circuits
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits

Definitions

the invention relates to a device according to the features of the first claim.
the invention relates to a device for detecting potential sources of fire or ignition, in particular hot particles or sparks in transport units for combustible substances.
Such devices are used in particular for monitoring the interior of pipes and channels in which a flammable, consisting of dusts, liquids or solid particles transported in a fall distance or by means of a conveying air flow is transported.
the invention is suitable for use in delivery lines in which highly flammable or explosive, preferably dust-like particles are transported pneumatically.
sensors for fire detection are arranged either in or outside the wall of the delivery line or in a displacement body, which is located within the gas stream. These are used especially when the velocity of the gas stream and its loading with solid particles are high, so that monitoring from the pipe wall leads to erroneous results. The same applies to pipes with a relatively large diameter.
EP 1422 675 A1 describes a device for decoupling dust-laden systems with the risk of explosion, in which a sensor for detecting changes in the hazardous area outside a decoupling window is arranged, which is connected to an evaluation and Löoing pulp.
a sensor for detecting changes in the hazardous area outside a decoupling window is arranged, which is connected to an evaluation and Löoing pulp.
For fire detection sensors are used, which work in the infrared, UV and in the visible light range.
EP 1 413 998 B1 describes a device for detecting smoldering nests in a pneumatic conveying line, in which IR sensors are arranged in an elongate sleeve.
the IR-permeable sleeve is disposed with two fasteners on a lid insertable into the tubing, with a receiving socket within the sleeve carrying the IR sensors, the receiving socket being constructed of two parts.
the Displacement body has a fixed arrangement relative to the wall of the delivery line, consists of a plurality of parts and transmits the signal detected by the sensors inside to an alarm device outside the displacement body.
the IR sensor (s) is / are located in the radial direction of the transport and protected with a transparent cover against contamination or damage. A disadvantage of this device is that the / the sensors are very limited in their temperature use.
DE 29 16 086 B2 Another device for reporting optical fire phenomena, in particular sparks, is in DE 29 16 086 B2 described.
This device also has a displacement body within the conveying line, which consists of two mutually L-shaped connected perpendicular legs, the first leg is connected to the fastening means and the other leg extends in the flow direction of the air flow and a light entry surface at the free end having.
IR radiation In the leg entering IR radiation is deflected by means of radiation-guiding arcuately extending fibers and fed to a sensor which is located outside the pipeline. This sensor is coupled to a suitable transmitter, with the help of an alarm can be triggered.
To realize an entry of the radiation in the one leg of the device different solutions are proposed. As a field of application especially flow for woodworking machines are called.
the proposed solutions either have the disadvantage that they consist of a large number of individual parts, that the optical waveguide passes after coupling the transmissible radiation with strong losses to the electrical converter, that the displacer is directed against the air flow, but not aerodynamically shaped and thus the optics are dirty, or that the optical window is not monitored for contamination and the detector is not monitored for operability.
the arranged in the conveying line device consisting of an optical detection unit consists of a transparent cylindrical ring, optical reflection surfaces, adjustment units, static elements to give the optical detection unit stability, optical-electrical converter, electronic evaluation unit, an optical pollution monitoring, the may be located inside or outside the pipes and channels to be monitored, and an impact body, for. As a deflector to protect the transparent cylindrical ring from damage.
the solution according to the invention provides that the displacement body extending along the delivery line is arranged on a shaft which is fixedly connected to the pipe wall. At one end of the displacement body an aerodynamically shaped deflector is arranged, which is fluidically designed so that it has a low flow resistance.
deflectors at both ends of the displacement body. This has advantages if the material flow in the delivery line flows in different directions. The mirror is then to be arranged approximately in the middle of the displacement body so that it fulfills its deflection function.
a translucent ring is arranged, in the interior of which a reflector is located. If necessary, the ring may be coated with a special material that allows for wavelength-selected detection.
the attachment of the translucent ring can be done by means of thread, preferably a metric fine thread, press fit or gluing. A thread for rapid assembly and interchangeability is advantageous.
the reflector used is rotationally symmetrical and has a very high reflection efficiency.
an adjustable mirror is arranged in the displacement body. This is to be arranged so that it reflects the radiation into the interior of the shaft.
a spark or ignition source within the particle stream that is carried with the gas flow within the tube emits electromagnetic or optical radiation. This radiation passes through the translucent ring to the reflector in the interior of the displacement body and is reflected by the latter via the adjustable mirror along the shaft to an optical receiving and evaluating device at the end of the shaft.
the mirror which preferably has a concave surface, is part of a Justiermones that is easy to install and replaceable.
a spring and adjusting devices is adjustable so that the electromagnetic radiation of the spark or the ignition source can be precisely and concentrated directed to the optical receiving and evaluation unit at the end of the shaft.
the adjustment is interchangeable arranged in the displacement body.
a closure cap which can be screwed, on the displacement body.
the reflector is rotationally symmetrical and conical. Its design may be conical concave or conical convex, thereby increasing or decreasing the effective viewing angle. Due to the concave configuration of the mirror, it is possible to bundle the radiation concentrated and focused on the optical receiving and evaluating unit.
screws such as set screws or cylindrical pins are provided, which cooperate with a spring, such as a coil spring.
a spring such as a coil spring
the end of the shaft leads through the pipe wall to the outside to an evaluation, for example, to a detector in which the signal evaluation is performed.
the mirror is adjusted in the X, Y and Z directions so that the electromagnetic radiation hits the center of the optical-to-electrical transducer at the end of the shaft.
the adjusting device of the mirror can represent actuators which are arranged around the mirror. This can be piezo elements.
the arranged at the end of the shaft receiving unit passes the converted signal to an evaluation, such as a detector, on. It may be a circuit board for evaluating the signal.
the shaft means may be arranged with which the shaft is adjustable in the direction of the axis of the conveying pipe parallel to the pipe wall.
the shaft can be arranged on an adapter, which allows to connect the shaft firmly to the pipe wall or to insert into this.
test emitter such as a transmitting diode.
This can emit a signal in the direction of the transparent ring for the examination of the pollution and receive the reflected signal as a measure of pollution.
An examination from the inside does not lead to the fact that contamination by dark particles on the outside of the ring are recognized properly. Therefore, it is advantageous to carry out a contamination test by a test emitter from the outside, which is for example mounted on the pipe wall. Both options can be used individually or in combination.
the transmission of the signal can be continuous or in time, between one and ten seconds. The returned signal is evaluated.
the translucent ring is contaminated to a certain extent, can be made by the evaluation a relevant signal to clean or to change the translucent ring.
the signal falls to the top of the reflector, which monitors the surface of the ring all around, ie 360 degrees.
the monitoring is done with a single detector. This is particularly advantageous over tests from the outside, where a jet only partially enters the ring, whereby only the permeability at the entrance surface is tested.
the translucent ring made of glass, quartz, plastic or sapphire. Furthermore, it is advantageous to design the deflector with a smooth surface as a steel sleeve with a rubber, Teflon or Halarbe Anlagenung, wherein the reflector is arranged on the opposite side and both parts structurally form a unit. It is advantageous réellestecken reflector and deflector directly on the translucent ring in the form of a press fit.
a protective filter is also advantageous in front of the optical transmitting and receiving unit, z. B. at the end of the shaft.
This can be, for example, an optically transmissive glass part.
the optical signal transmitter is a test emitter, for example a transmitting diode with a light guide rod.
a light rod has the advantage that a certain radiation characteristic is present, which facilitates the Spiegeljustage with punctiformity.
a Lichtleitbündel be positioned to the evaluation, z.
the detector sell off and protect against high temperatures. This is advantageous if the electronics only for certain temperatures, eg. B. to 80 ° C, can be used and a thermal decoupling is required.
the device according to the invention has the advantage that it consists of few parts and thus is inexpensive to produce, the received signals reliably reach a detector or an evaluation unit and at any time there is information on how transparent the optical window is, so that this quickly and easily can be replaced.
an angle of 360 degrees is monitored by means of a detector by a radiation receiver in connection with the device for reporting, so only one evaluation unit is required for an all-round monitoring.
the FIG. 1 shows the apparatus for detecting and reporting of fire phenomena in schematic representation and in section, wherein only a part of the shaft 14 is shown.
the deflector 3 is connected directly to the reflector 9. Both parts are attached to the translucent ring 2.
the translucent ring 2 is fastened on its other side to the tube of the displacement body 1 by means of screw thread.
the other side of the displacement body 1 is closed by a closure cap 8, which is sealed and glued in the present case.
Through the cap 8 of the adjusting insert 4 is introduced and secured.
the adjusting insert 4 serves to adjust the concave mirror 6, which is mounted on a mirror mount 7.
the cylindrical pin 12 and the adjusting screw 11, which constitutes a grub screw, make it possible to set the mirror 6 in two directions.
the pivoting movement is achieved by adjusting the adjusting screw 5 relative to the spring 10, wherein the mirror 6 is rotated about the axis 13.
Mirror 6 and reflector 9 are provided with a gold coating, which has good reflection properties and does not corrode even at higher temperatures.
FIG. 2 shows the said device within a tube, wherein the assembly into the tube wall 23 with the insert 24, the adapter 25 and the connection to the detector 26 takes place.
a test emitter 18 is arranged, the signal 17 allows the inspection of the outside of the ring 2 for contamination.
the FIG. 3 shows the device when detecting and reporting fire phenomena 15, from which emanates an electromagnetic radiation 16, is reflected by the reflector 9 via the mirror 6 to the end of the shaft 14 and reaches the transmitting and receiving part 19.
the optical receiving unit 21 converts the received signal, passes it to the evaluation unit 27, z. As a detector, on and triggers an alarm if necessary.
a transmitting diode 18 is arranged as a test emitter 18, which emits a fundamental signal 17 via the light beam 20. The transmission takes place at regular intervals, for example every three seconds. This signal will hit the tip of the reflector 9 if the mirror 6 is correctly adjusted. The signal reflected back forms a measure of how transparent the ring 2 is.

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Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Business, Economics & Management (AREA)
Emergency Management (AREA)
Engineering & Computer Science (AREA)
Computer Security & Cryptography (AREA)
Chemical & Material Sciences (AREA)
Analytical Chemistry (AREA)
Investigating Or Analysing Materials By Optical Means (AREA)
Fire-Detection Mechanisms (AREA)
Instruments For Viewing The Inside Of Hollow Bodies (AREA)
Fire Alarms (AREA)

EP09005581A 2009-04-21 2009-04-21 Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables Not-in-force EP2244237B1 (fr)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
EP09005581A EP2244237B1 (fr)	2009-04-21	2009-04-21	Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables
US12/799,187 US20100265510A1 (en)	2009-04-21	2010-04-20	Device for recognizing and reporting fire phenomena with combustible materials
RU2010115742/08A RU2010115742A (ru)	2009-04-21	2010-04-20	Устройство для распознания и сигнализации появления огня в горючих материалах
CA2701242A CA2701242A1 (fr)	2009-04-21	2010-04-20	Dispositif de detection et de signalisation de flammes alimentees par des matieres combustibles
CN201010167068A CN101872528A (zh)	2009-04-21	2010-04-20	用于对带有可燃材料的火情进行识别和报警的设备

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP09005581A EP2244237B1 (fr)	2009-04-21	2009-04-21	Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables

Publications (2)

Publication Number	Publication Date
EP2244237A1 true EP2244237A1 (fr)	2010-10-27
EP2244237B1 EP2244237B1 (fr)	2012-07-04

Family

ID=41090294

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP09005581A Not-in-force EP2244237B1 (fr)	2009-04-21	2009-04-21	Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables

Country Status (5)

Country	Link
US (1)	US20100265510A1 (fr)
EP (1)	EP2244237B1 (fr)
CN (1)	CN101872528A (fr)
CA (1)	CA2701242A1 (fr)
RU (1)	RU2010115742A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN103400472B (zh) *	2013-08-16	2015-11-25	泉州宏讯电子有限公司	具有开窗装置的新型警报仪
CN107583224B (zh) *	2017-09-19	2020-04-24	中海石油技术检测有限公司	海上石油火气系统检测评估实验平台及方法
CN108615327A (zh) *	2018-06-11	2018-10-02	广州市景彤机电设备有限公司	移动端可视化监控管道火花方法与移动终端

Citations (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3824392A (en)	1972-04-24	1974-07-16	Pak Const Ab	Detector to indicate burning or glowing particles
DE2916086A1 (de) *	1979-04-20	1980-10-23	Preussag Ag Feuerschutz	Einrichtung zum melden von optischen feuererscheinungen, insbesondere funken
DE3017144A1 (de) *	1980-05-05	1981-11-26	Preussag Ag Feuerschutz, 2060 Bad Oldesloe	Einrichtung zu melden von optischen feuererscheinungen, insbesondere funken
US4547673A (en) *	1983-01-10	1985-10-15	Detector Electronics Corporation	Smoke and flame detector
DE4304890A1 (de)	1992-04-27	1993-10-28	Jossi Hans Praezisionsmechanik	Verfahren und Vorrichtung zum Ermitteln einer Meßgröße aus einem in einer Rohrleitung strömenden Medium
US20040011974A1 (en) *	2001-01-24	2004-01-22	Rion Co., Ltd.	Laser oscillator and light scattering particle detector using the same
EP1413998A2 (fr)	2002-10-25	2004-04-28	Forschungsgesellschaft für angewandte Systemsicherheit und Arbeitsmedizin	Dispositif pour la reconnaissance de noyaux de feux couvants
EP1422675A1 (fr)	2002-11-21	2004-05-26	Minimax GmbH	Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3927555A (en) *	1973-10-15	1975-12-23	Gen Electric	Hydrogen detector system
AR062764A1 (es) *	2006-11-06	2008-12-03	Victaulic Co Of America	Metodo y aparato para secar redes de canerias equipadas con rociadores

2009
- 2009-04-21 EP EP09005581A patent/EP2244237B1/fr not_active Not-in-force
2010
- 2010-04-20 CN CN201010167068A patent/CN101872528A/zh active Pending
- 2010-04-20 CA CA2701242A patent/CA2701242A1/fr not_active Abandoned
- 2010-04-20 US US12/799,187 patent/US20100265510A1/en not_active Abandoned
- 2010-04-20 RU RU2010115742/08A patent/RU2010115742A/ru not_active Application Discontinuation

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3824392A (en)	1972-04-24	1974-07-16	Pak Const Ab	Detector to indicate burning or glowing particles
DE2916086A1 (de) *	1979-04-20	1980-10-23	Preussag Ag Feuerschutz	Einrichtung zum melden von optischen feuererscheinungen, insbesondere funken
DE2916086B2 (de)	1979-04-20	1981-03-12	Preussag Ag Feuerschutz, 2060 Bad Oldesloe	Einrichtung zum Melden von optischen Feuererscheinungen, insbesondere Funken
DE3017144A1 (de) *	1980-05-05	1981-11-26	Preussag Ag Feuerschutz, 2060 Bad Oldesloe	Einrichtung zu melden von optischen feuererscheinungen, insbesondere funken
US4547673A (en) *	1983-01-10	1985-10-15	Detector Electronics Corporation	Smoke and flame detector
DE4304890A1 (de)	1992-04-27	1993-10-28	Jossi Hans Praezisionsmechanik	Verfahren und Vorrichtung zum Ermitteln einer Meßgröße aus einem in einer Rohrleitung strömenden Medium
US20040011974A1 (en) *	2001-01-24	2004-01-22	Rion Co., Ltd.	Laser oscillator and light scattering particle detector using the same
EP1413998A2 (fr)	2002-10-25	2004-04-28	Forschungsgesellschaft für angewandte Systemsicherheit und Arbeitsmedizin	Dispositif pour la reconnaissance de noyaux de feux couvants
EP1413998B1 (fr)	2002-10-25	2008-04-02	Forschungsgesellschaft für angewandte Systemsicherheit und Arbeitsmedizin	Dispositif pour la reconnaissance de noyaux de feux couvants
EP1422675A1 (fr)	2002-11-21	2004-05-26	Minimax GmbH	Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion

Also Published As

Publication number	Publication date
RU2010115742A (ru)	2011-10-27
EP2244237B1 (fr)	2012-07-04
CN101872528A (zh)	2010-10-27
CA2701242A1 (fr)	2010-10-21
US20100265510A1 (en)	2010-10-21

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