EP1422675A1 - Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion - Google Patents

Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion Download PDF

Info

Publication number: EP1422675A1
Authority: EP; European Patent Office
Prior art keywords: decoupling; explosion; dust; risk; window
Prior art date: 2002-11-21
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

EP03010529A

Other languages

German (de)

English (en)

Other versions

EP1422675B1 (fr

Inventor

Manfred Russwurm

Olaf Klischat

Thilo Lindau

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

Preussag AG Minimax

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.)

2002-11-21

Filing date

2003-05-10

Publication date

2004-05-26

2003-05-10 Application filed by Minimax GmbH and Co KG, Preussag AG Minimax filed Critical Minimax GmbH and Co KG

2004-05-26 Publication of EP1422675A1 publication Critical patent/EP1422675A1/fr

2012-06-27 Application granted granted Critical

2012-06-27 Publication of EP1422675B1 publication Critical patent/EP1422675B1/fr

2023-05-10 Anticipated expiration legal-status Critical

Status 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
- 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
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/04—Fire prevention, containment or extinguishing specially adapted for particular objects or places for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys

Definitions

the invention relates to a device for decoupling dust-laden systems with a risk of explosion, preferably zone 20 according to ATEX compared to a zone with less or no risk of explosion according to the preamble of the first claim.
the invention can be used wherever moving dust-like particles are present and there is a risk of explosion, and observation of these spaces is required from an area with little or no risk of explosion.
An explosion hazard according to ATEX 20 should preferably be understood as an explosion hazard.
the dust-like particles can be dust particles in pipes, transport devices or cyclones in the chipboard industry, the textile industry, the chemical industry, the metal processing industry (recycling and milling industry), for example in the crushing and suction of magnesium particles, in furniture manufacture, in the Wood-shaped particles are suctioned off or coal particles in aggregates of the brownstone or anthracite coal processing industry or in the pneumatic conveying of black powder.
the decoupling device can be used for spark extinguishing systems for moving dust-like particles in systems with an increased risk of explosion.
the device can also be used for flame monitoring, flow rate and temperature monitoring in potentially explosive areas. If the condition of the dust-prone area must be observed in hazardous areas, there is a requirement that all units and devices in the potentially explosive area have the required safety approval for the potentially explosive area.
a sensor for monitoring the condition in an area with an explosion hazard according to ATEX 21 cannot be used in an area with the explosion level according to ATEX 20. Sensors for sparks, fire detection, temperature, flow or flow measurement should be meant.
processing machines with pneumatic suction and conveying devices such as those found in the woodworking industry and in the textile, recycling, food, animal feed, leather, rubber and chemical industries, pose particular fire risks Precautions are required. Sparks caused by processing machines and contaminants, such as metal parts and stones in the conveyor systems, reach the following systems via the conveyor lines: Example: in the fabric filter or in the silo. Here they can cause smoldering fires, which develop unnoticed when covered by the following material. Large enough fires or dust explosions are often the result. To prevent this, spark extinguishing systems have been developed. These spark extinguishing systems are usually sensors that are coupled to an extinguishing center.
the fire detection sensors which are referred to as spark detectors, are inserted through a hole, for example in a pipeline. If there are glowing sparks in the flow of the pipe, these are recognized, trigger an electrical signal to the fire alarm control panel, after which an extinguishing unit in the pipe is activated, which is further downstream in the direction of flow of the particles in the system and for extinguishing the particles in the delivery pipe provides.
DE 40 26 041 C2 discloses a device for detecting sparks in a flowed-through room, wherein at least one optical waveguide opens into the room with a first end, a second end of each optical waveguide being opposite a photoreceiver which generates electrical signals when sparks occur receives.
the solution according to the invention provides a device for decoupling dust-laden systems with a risk of explosion, preferably zone 20 according to ATEX over a zone with little or no risk of explosion in such a way that a decoupling window is arranged in the wall of the system, with one side of the decoupling window, the moving particles are located in the potentially explosive area, which has a different and generally higher explosion level and a sensor system, for example fire detection, is arranged on the other side of the decoupling window.
a registration device for example a fire alarm detection, which is coupled to a fire alarm center, to which an extinguishing device is arranged which triggers the extinguishing in the relevant unit.
An application of the device according to the invention provides z.
the decoupling window can, for example, be arranged in a pipe, inside which there is an increased explosion level, while there is no safety-relevant space outside the decoupling window and the pipe. This means that the fire detection facilities in connection with the fire alarm center do not have to meet any special security level requirements, which leads to cost savings.
the decoupling window can be arranged either on round or square pipes made of metal or steel or other materials or directly in a silo or collecting container. It is advantageous to arrange the decoupling window on both sides of a tube. It must be connected to the walls of the pipe to be impermeable to gas and pressure. It is advantageous to arrange the decoupling window on both sides of the measuring points.
the decoupling window is advantageous to design as a ring running around the conveyor tube. If there is an inspection flap in the pipes, the decoupling window can be incorporated instead of the inspection flap.
the decoupling window should be located in the pipeline or system so that it is located after a location where there is a fire potential and before the location where there is an explosion potential.
the spark extinguishing system has a decoupling window in the direction of movement of the particles, which is arranged after the extinguishing unit. This can be used to determine whether the deletion is intensive enough and if necessary a more intensive deletion can be carried out. This arrangement represents a further improvement in safety in potentially explosive systems of the type mentioned.
the fire detection device can be sensors that detect the entire area of the photon spectrum.
the fire detection can consist of a transmitter and a receiver.
the decoupling window must be suitable for allowing the appropriate radiation from the sensor (receiver) or the transmitter to pass through. Glass, plastic, calcium fluoride or other known and comparable substances can be used for this. With the decoupling window, it is not only possible to sense and detect ignition or fire potential in potentially explosive areas, but also to observe changes in state and measure the speed of faults.
Optical sensors are used as sensors and for function monitoring and control Receiver arranged. Level, monitoring, temperature, gas, density, Dimension and color detection.
FIG. 1 shows a pipe with pipe walls 1 made of steel, into which decoupling windows 4 were inserted on both sides, which are impermeable to gas and pressure, so that the system inside the pipe walls 1 is independent of the system which is located outside the pipe wall 1.
a pneumatic transport of quickly inflammable particles 2, 3 takes place within the tube wall 1. These are dusts 3 which form an explosion potential in collecting containers 1, so that an ignition potential 2 must be extinguished before a storage container is reached. This presupposes that the inflammation potential 2 is recognized beforehand. Spark detectors or detection devices 5 that are not approved for the potentially explosive atmosphere inside the pipe wall 1 are to be used.
the corresponding spark detectors 5 are arranged behind the decoupling window 4, which consist of a sensor and a pane and which are connected to a fire alarm control panel 6 by means of lines.
the decoupling window 4 consists of a plastic that can be determined by infrared rays.
FIG. 2 shows a conveyor system in which decoupling windows 4, which are all-round, were let into the tube walls 1 of a steel tube at two points. Spark detectors 5 are arranged on both sides of the decoupling window 4, one line 8 leading to the fire alarm control panel 6.
the first spark detector 5 detects an ignition potential 2 in the tube
a signal is sent to the fire alarm center 6 which triggers the fire extinguishing device 9, an extinguishing agent being sprayed into the tube via a nozzle 7. This happens at the point in time at which the ignition potential 2 passes through this pipe section.
Another spark detector 5 makes it possible to check whether the ignition potential 2 has been completely extinguished or whether the extinguishing process is to be intensified or measures have to be taken on the collecting container.
Figure 3 shows a silo or a cyclone, which is flowed from below, immediately after the inlet decoupling window 4 are arranged with spark detectors with a Fire control panel 6 are coupled. If there is an ignition potential 2 in the glow current an extinguishing system can be triggered at a suitable point.
FIG. 4 shows a tube wall 1 into which a decoupling window 4 rotates in shape a ring is arranged, on both sides of which fire detection devices 5 are arranged, one infrared transmitter 11 on one side and one on the other side Infrared receiver is arranged, the infrared receiver 12 with the fire control panel 6 is coupled.
FIG. 5 shows a pipe in the pipe wall 1 instead of an inspection flap Decoupling window 4 was arranged pressure and gas-tight, with behind the Revision window is a spark detector 5, the explosion-free dust 3, the pneumatically conveyed, checked for inflammation potential 2.
the proposed system succeeds in fire detection elements or spark detectors for use potentially explosive rooms without meeting the requirements must be placed on the fire detection units in these rooms. Farther it is possible to control to what extent deletion processes after the detection of Inflammation potential was carried out intensely enough.

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Business, Economics & Management (AREA)
Emergency Management (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Health & Medical Sciences (AREA)
Public Health (AREA)
Fire Alarms (AREA)
Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

EP20030010529 2002-11-21 2003-05-10 Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion Expired - Lifetime EP1422675B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE20218136U DE20218136U1 (de)	2002-11-21	2002-11-21	Funkenlöschanlage für bewegte staubförmige Partikel
DE20218136U		2002-11-22

Publications (2)

Publication Number	Publication Date
EP1422675A1 true EP1422675A1 (fr)	2004-05-26
EP1422675B1 EP1422675B1 (fr)	2012-06-27

Family

ID=7977250

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20030010529 Expired - Lifetime EP1422675B1 (fr)	2002-11-21	2003-05-10	Dispositif pour découpler des installations chargés de poussières et avec risque d'explosion

Country Status (2)

Country	Link
EP (1)	EP1422675B1 (fr)
DE (1)	DE20218136U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006001208A1 (de) *	2006-01-10	2007-07-19	Fagus-Grecon Greten Gmbh & Co Kg	Vorrichtung zum Löschen von glühenden Feststoffteilchen
EP2244237A1 (fr)	2009-04-21	2010-10-27	Minimax GmbH & Co. KG	Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables
CN114306978A (zh) *	2022-01-07	2022-04-12	朱龙辉	一种港口谷仓防尘爆炸后灭火报警装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102009017859B4 (de) *	2009-03-25	2016-05-12	Oliver Frieters	Entstaubungsanlage mit Funkeinschaltsteuerung und Verfahren zum Anschließen der Entstaubungsanlage
DE102009017858B4 (de) *	2009-03-25	2016-05-12	Oliver Frieters	Filtersteuerung mit Reststaubgehaltanzeige sowie Steuerungsverfahren hierfür
DE102012014143A1 (de) *	2012-07-18	2014-01-23	Man Diesel & Turbo Se	Gasführendes Svstem und damit ausgerüstete Brennkraftmaschine
DE102012017534B4 (de)	2012-09-05	2014-11-06	Entstaubungsgeräte Pulsnitz GmbH	Absaugvorrichtung
DE202012008456U1 (de)	2012-09-05	2012-09-28	Entstaubungsgeräte Pulsnitz GmbH	Absaugvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE7533568U (de) *	1975-10-22	1976-02-19	Grecon Greten Consulting Gmbh & Co, 3220 Alfeld	Meßvorrichtung eines Feueranzeigegerätes
DE2916086A1 (de)	1979-04-20	1980-10-23	Preussag Ag Feuerschutz	Einrichtung zum melden von optischen feuererscheinungen, insbesondere funken
US4855118A (en)	1987-04-15	1989-08-08	Nichia Kagaku Kogyo K.K.	Method of producing fluorapatite
US4855718A (en) *	1987-07-28	1989-08-08	Firetek Corporation	Fire detection system employing at least one optical waveguide
DE4036041A1 (de)	1990-01-30	1991-08-01	Grecon Greten Gmbh & Co Kg	Vorrichtung zur erkennung von funken in einem durchstroemten raum
DE19843841A1 (de) *	1998-09-24	2000-04-20	Anseros Klaus Nonnenmacher Gmb	Meßzelle für fotometrische Messungen
US6119785A (en) *	1996-07-17	2000-09-19	Fagus-Grecon Greten Bmbh & Co. Kg	Fire-extinguishing device and valve unit therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3017144C2 (de)	1980-05-05	1984-09-27	Preussag Ag Feuerschutz, 2060 Bad Oldesloe	Einrichtung zu Melden von optischen Feuererscheinungen, insbesondere Funken
DE3134499A1 (de)	1981-09-01	1983-03-17	Golovnoe konstruktorskoe bjuro derevoobrabatyvaju&scaron;&ccaron;ego oborudovanija, Vologda	Verfahren zur verhinderung der entzuendung und explosion von schuettgut
DE19726096C1 (de)	1997-06-19	1999-03-04	Manfred Tolle	Verfahren und Vorrichtung zur Brandverhinderung

2002
- 2002-11-21 DE DE20218136U patent/DE20218136U1/de not_active Expired - Lifetime
2003
- 2003-05-10 EP EP20030010529 patent/EP1422675B1/fr not_active Expired - Lifetime

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE7533568U (de) *	1975-10-22	1976-02-19	Grecon Greten Consulting Gmbh & Co, 3220 Alfeld	Meßvorrichtung eines Feueranzeigegerätes
DE2916086A1 (de)	1979-04-20	1980-10-23	Preussag Ag Feuerschutz	Einrichtung zum melden von optischen feuererscheinungen, insbesondere funken
US4855118A (en)	1987-04-15	1989-08-08	Nichia Kagaku Kogyo K.K.	Method of producing fluorapatite
US4855718A (en) *	1987-07-28	1989-08-08	Firetek Corporation	Fire detection system employing at least one optical waveguide
DE4036041A1 (de)	1990-01-30	1991-08-01	Grecon Greten Gmbh & Co Kg	Vorrichtung zur erkennung von funken in einem durchstroemten raum
US6119785A (en) *	1996-07-17	2000-09-19	Fagus-Grecon Greten Bmbh & Co. Kg	Fire-extinguishing device and valve unit therefor
DE19843841A1 (de) *	1998-09-24	2000-04-20	Anseros Klaus Nonnenmacher Gmb	Meßzelle für fotometrische Messungen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102006001208A1 (de) *	2006-01-10	2007-07-19	Fagus-Grecon Greten Gmbh & Co Kg	Vorrichtung zum Löschen von glühenden Feststoffteilchen
DE102006001208B4 (de) *	2006-01-10	2008-03-20	Fagus-Grecon Greten Gmbh & Co Kg	Vorrichtung zum Löschen von glühenden Feststoffteilchen
EP2244237A1 (fr)	2009-04-21	2010-10-27	Minimax GmbH & Co. KG	Dispositif de reconnaissance et d'alerte de survenues d'incendies avec des matériaux inflammables
CN114306978A (zh) *	2022-01-07	2022-04-12	朱龙辉	一种港口谷仓防尘爆炸后灭火报警装置
CN114306978B (zh) *	2022-01-07	2023-09-12	朱龙辉	一种港口谷仓防尘爆炸后灭火报警装置

Also Published As

Publication number	Publication date
EP1422675B1 (fr)	2012-06-27
DE20218136U1 (de)	2003-03-06

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