EP0559968B1 - Device for protection against explosion of dust materials - Google Patents
Device for protection against explosion of dust materials Download PDFInfo
- Publication number
- EP0559968B1 EP0559968B1 EP92122136A EP92122136A EP0559968B1 EP 0559968 B1 EP0559968 B1 EP 0559968B1 EP 92122136 A EP92122136 A EP 92122136A EP 92122136 A EP92122136 A EP 92122136A EP 0559968 B1 EP0559968 B1 EP 0559968B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dust
- control centre
- pressure relief
- connecting pipeline
- explosion
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
Definitions
- the present invention relates to a dust-carrying system with a device for protecting the system in the event of dust explosions, and to a method for protecting such a dust-carrying system against the effects of a dust explosion.
- dust explosions which can be carried into the pipeline by apparatus or containers, can increase to the point of detonation and can lead to the complete destruction of a dust-carrying system. The extent of the destruction is particularly great when the dust explosion is carried from one container into a second or further container connected to the pipeline.
- Equipment connected by pipelines can only be reliably protected by partitioning (decoupling).
- a system with a decoupling device with the features of claim 1 and a method with the features of claim 6 provide the solution to this problem.
- the invention is based on the knowledge that, in the event of dust explosions in pipes, the pressure wave propagates faster than the flame spreads. It is therefore possible to detect the pressure wave via the quenching pipe (pressure relief pipe) in the first pipe bend, to relieve the pressure wave into the room and to arrange the closing of one in the pipe, which leads to further equipment, before the flame arrives Initiate decoupling valve. Even if the valve is not yet completely closed when the flame arrives at the decoupling valve (quench valve), the flame penetration is already ruled out due to the quenching effect of the closing valve.
- the advantages of a system with a device according to the invention are the blocking of pipelines against flame penetration, the avoidance of high pressures in the pipelines, the avoidance of the propagation of pressure waves in pipeline systems.
- the control of the decoupling valve in the system according to the invention is designed so that a high level of security against false responses is ensured and the system can be restarted quickly.
- the first step is to relieve the explosion pressure of the apparatus through the quenching tube (Q tube) with the associated quenching effect.
- the closing process of the quench valve is then preferably initiated slowly and not abruptly with the relief process, since here too the quench effect is used and the knowledge that the pressure wave travels through the pipeline before the flame, in the present case with a reduced speed, since a large part of the explosion energy has already been quenched to the outside via the Q-pipe.
- the system housed in a building 10 comprises a first apparatus 11 with a container in which there is a bulk material 12 at risk of dust explosion.
- the container is relieved of explosion pressure by a device 13 according to DE-A-38 22 012.
- a connecting pipeline 14 leads to a second apparatus 15.
- devices 13a, 13b for the explosion pressure relief which are constructed in accordance with the relief device 13.
- the apparatus 15 also has a device 13c for explosion pressure relief of the type described in DE-A-38 22 012.
- rupture disks can also be used.
- signal transmitters are integrated, which are each connected to the control center 19 via the connecting lines 18a, 18b, 18c, 18d.
- a dynamic-elastic decoupling valve 20 (quench valve) is arranged in the connecting pipeline 14 and is controlled by the electronic control center 19 via the connecting line 21. This decoupling valve is controlled so that it closes the cross-section of the connecting pipeline 14 before the flame front is reached.
- the pressure relief devices 13a, 13b in the area of the pipe bends at the inlet and outlet of the apparatuses 15, 11 are installed in order to avoid high pressure peaks in the pipe 14.
- a rupture disk is integrated in the pressure relief device 13a, 13b, which responds when a pressure peak occurs and relieved the explosion into the room through the quenching pipe without flame spread.
- the electronic control center 19 has an emergency power supply and monitors the energy supply for the decoupling valve 20 and also monitors all supply lines for cable breaks and ground faults. Switching operations that are important for the safety of the system can be initiated via the control center 19. If the mains and emergency power supply for the control center 19 fails or the energy supply for the dynamic-elastic decoupling valve 20 drops, the latter is automatically closed while the switching processes which are important for the safety of the system are initiated. For example, the shutdown of certain components 22 of the system such. B. a blower via the line 23 connected to the control center 19.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Cleaning In General (AREA)
- Refuse Collection And Transfer (AREA)
- Pipeline Systems (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine staubführende Anlage mit einer Einrichtung zum Schutz der Anlage bei Staubexplosionen sowie ein Verfahren zum Schutz einer solchen staubführenden Anlage gegen die Auswirkungen einer Staubexplosion. Es ist bekannt, daß sich Staubexplosionen, die durch Apparaturen oder Behälter in Rohrleitungen hineingetragen werden können, bis zur Detonation steigern und zur völligen Zerstörung einer staubführenden Anlage führen können. Das Ausmaß der Zerstörung ist insbesondere groß, wenn die Staubexplosion aus einem Behälter in einen zweiten oder weitere an die Rohrleitung angeschlossene Behälter hineingetragen wird. Aus dem Stand der Technik ist es bereits bekannt, die ßehältnisse oder Apparaturen selbst durch Explosionsdruckentlastung oder Explosionsunterdrückung gegen die verheerendenden Auswirkungen von Staubexplosionen zu schützen. Durch Rohrleitungen untereinander verbundene Apparaturen kann man nur durch Abschotten (Entkoppeln) zuverlässig schützen. Die bislang bekanntgewordenen Entkopplungssysteme sind konstruktiv sehr aufwendig und haben sich in der Praxis nicht durchgesetzt. Die Industrie und die Sicherheitsorgane suchen dringend ein zuverlässiges und wirtschaftliches System zum Schutz einer Anlage bei einer Staubexplosion und zur Verhinderung der Fortpflanzung von Staubexplosionen über die die einzelnen Aggregate einer Anlage verbindenden Rohrleitungen.The present invention relates to a dust-carrying system with a device for protecting the system in the event of dust explosions, and to a method for protecting such a dust-carrying system against the effects of a dust explosion. It is known that dust explosions, which can be carried into the pipeline by apparatus or containers, can increase to the point of detonation and can lead to the complete destruction of a dust-carrying system. The extent of the destruction is particularly great when the dust explosion is carried from one container into a second or further container connected to the pipeline. It is already known from the prior art to protect the containers or apparatuses themselves from the disastrous effects of dust explosions by explosion pressure relief or explosion suppression. Equipment connected by pipelines can only be reliably protected by partitioning (decoupling). The decoupling systems that have become known so far are structurally very complex and have not become established in practice. Industry and security bodies are urgently looking for a reliable and economical system to protect a system in the event of a dust explosion and to prevent the propagation of dust explosions via the pipelines connecting the individual units of a system.
Aus der DE-A-38 22 012 ist bereits eine sogenannte "Quenching-Vorrichtung" für den Schutz staubführender Apparaturen in geschlossenen Räumen bekannt geworden, die die Möglichkeit der flammenlosen Explosionsdruckentlastung in den Raum hinein bietet. Diese bekannte "Quenching-Vorrichtung" weist eine Berstscheibe oder eine gleichwertige Entlastungseinrichtung auf, die eine staub- und/oder flammenfreie Druckentlastung ermöglicht. Die Wandungen der "Quenching-Vorrichtung" können aus einer wellenartig ausgeformten mehrlagigen Schicht z.B. aus Edelmetall und Stein- bzw. Glaswolle oder vergleichbaren Materialien aufgebaut sein, so daß beim Ansprechen der Berstscheibe oder der vergleichbaren Entlastungseinrichtung ein freies Abströmen der den Behälter verlassenden Expansions- und Verbrennungsgase nicht oder nur unwesentlich behindert wird, größere Mengen ausgeworfenen brennbaren Staubes während einer Druckentlastungssituation zurückbehalten werden und Verbrennungs- und Expansionsgase abgekühlt werden. Auf den gesamten Inhalt der DE-A-38 22 012 wird hiermit Bezug genommen.From DE-A-38 22 012 a so-called "quenching device" for the protection of dust-carrying equipment in closed rooms has already become known, which offers the possibility of flameless explosion pressure relief into the room. This known "quenching device" has a rupture disc or an equivalent relief device which enables dust and / or flame-free pressure relief. The walls of the "quenching device" can consist of a wave-shaped multilayered layer, for example of precious metal and rock or glass wool or comparable materials be constructed so that when the rupture disc or the comparable relief device responds, free flow of the expansion and combustion gases leaving the container is not or only insignificantly impeded, larger amounts of flammable dust ejected are retained during a pressure relief situation and combustion and expansion gases are cooled. Reference is hereby made to the entire content of DE-A-38 22 012.
Es ist Aufgabe der vorliegenden Erfindung, eine staubführende Anlage mit einer Einrichtung zu schaffen, die eine wirksame Entkopplung zweier oder mehrerer miteinander verbundener konstruktiv zu schützender Apparaturen, die Teil dieser Anlage sind, gewährleistet. Weiter ist es Aufgabe der Erfindung, ein Verfahren zur Verfügung zu stellen, mittels dessen untereinander verbundene Apparaturen einer staubführenden Anlage im Fall einer Staubexplosion wirksam entkoppelt werden.It is an object of the present invention to provide a dust-carrying system with a device which ensures effective decoupling of two or more interconnected apparatuses which are to be protected constructively and which are part of this system. Another object of the invention is to provide a method by means of which interconnected apparatuses of a dust-carrying installation are effectively decoupled in the event of a dust explosion.
Die Lösung dieser Aufgabe liefert eine Anlage mit einer Entkopplungseinrichtung mit den Merkmalen des Anspruchs 1 bzw. ein Verfahren mit den Merkmalen des Anspruchs 6.A system with a decoupling device with the features of claim 1 and a method with the features of claim 6 provide the solution to this problem.
Die Erfindung geht aus von der Erkenntnis, daß sich bei Staubexplosionen in Rohrleitungen die Druckwelle schneller fortpflanzt als die Flamme sich ausbreitet. Es ist daher möglich, die Druckwelle bereits über das Quenching-Rohr (Druckentlastungsrohr) im ersten Rohrleitungsknick zu erfassen, die Druckwelle in den Raum hinein zu entlasten und vor Eintreffen der Flamme die Schließung eines in der Rohrleitung, die zu einer weiteren Apparatur führt, angeordneten Entkopplungsventils einzuleiten. Auch wenn beim Eintreffen der Flamme am Entkopplungsventil (Quenchventil) das Ventil noch nicht ganz geschlossen ist, ist der Flammendurchschlag durch den Quenching-Effekt des sich schließenden Ventils bereits ausgeschlossen.The invention is based on the knowledge that, in the event of dust explosions in pipes, the pressure wave propagates faster than the flame spreads. It is therefore possible to detect the pressure wave via the quenching pipe (pressure relief pipe) in the first pipe bend, to relieve the pressure wave into the room and to arrange the closing of one in the pipe, which leads to further equipment, before the flame arrives Initiate decoupling valve. Even if the valve is not yet completely closed when the flame arrives at the decoupling valve (quench valve), the flame penetration is already ruled out due to the quenching effect of the closing valve.
Die Vorteile einer Anlage mit einer Einrichtung gemäß der Erfindung sind die Absperrung von Rohrleitungen gegen Flammendurchschlag, die Vermeidung von hohen Drücken in den Rohrleitungen, die Vermeidung der Ausbreitung von Druckwellen in Rohrleitungssystemen. Die Steuerung des Entkopplungsventils ist bei der erfindungsgemäßen Anlage so ausgebildet, daß eine hohe Sicherheit gegen Fehlansprechen gewährleistet und eine schnelle Wiederinbetriebnahme der Anlage möglich ist.The advantages of a system with a device according to the invention are the blocking of pipelines against flame penetration, the avoidance of high pressures in the pipelines, the avoidance of the propagation of pressure waves in pipeline systems. The control of the decoupling valve in the system according to the invention is designed so that a high level of security against false responses is ensured and the system can be restarted quickly.
Bei dem erfindinngsgemäßen Verfahren besteht also der erste Schritt in der Explosionsdruckentlastung der Apparatur durch das Quenching-Rohr (Q-Rohr) mit dem damit verbundenen Quenching-Effekt. Mit dem Entlastungsvorgang wird dann der Schließvorgang des Quenchventils (Entkopplungsventils) vorzugsweise langsam und nicht schlagartig eingeleitet, da auch hier wieder der Quench-Effekt genutzt wird sowie die Erkenntnis, daß vor der Flamme erst die Druckwelle durch die Rohrleitung wandert und zwar im vorliegenden Fall mit einer reduzierten Geschwindigkeit, da ein Großteil der Explosionsenergie bereits über das Q-Rohr nach außen abgequencht wurde.In the method according to the invention, the first step is to relieve the explosion pressure of the apparatus through the quenching tube (Q tube) with the associated quenching effect. The closing process of the quench valve (decoupling valve) is then preferably initiated slowly and not abruptly with the relief process, since here too the quench effect is used and the knowledge that the pressure wave travels through the pipeline before the flame, in the present case with a reduced speed, since a large part of the explosion energy has already been quenched to the outside via the Q-pipe.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels unter Bezugnahme auf die beiliegende Zeichnung näher beschrieben. Dabei zeigt die einzige Figur eine schematisch vereinfachte Darstellung einer erfindungsgemäßen Anlage.The invention is described below using an exemplary embodiment with reference to the accompanying drawings. The single figure shows a schematically simplified representation of a system according to the invention.
Die in einem Gebäude 10 untergebrachte Anlage umfaßt eine erste Apparatur 11 mit einem Behälter, in dem sich ein Staubexplosionsgefährdetes Schüttgut 12 befindet. Der Behälter ist durch eine Vorrichtung 13 gemäß der DE-A-38 22 012 explosionsdruckentlastet. Von dem Behälter der Apparatur 11 führt eine Verbindungsrohrleitung 14 zu einer zweiten Apparatur 15. Im Bereich der jeweiligen Rohrkrümmer 16, 17 dieser Verbindungsrohrleitung 14 sind ebenfalls Vorrichtungen 13a, 13b für die Explosionsdruckentlastung angeordnet, die entsprechend der Entlastungsvorrichtung 13 aufgebaut sind. Ebenso weist die Apparatur 15 eine Vorrichtung 13c für die Explosionsdruckentlastung der in der DE-A-38 22 012 beschriebenen Art auf. Anstelle dieser Druckentlastungsvorrichtungen 13, 13a, 13b, 13c können auch Berstscheiben verwendet werden. In diesen Druckentlastungsvorrichtungen sind jeweils Signalgeber integriert, die über die Verbindungsleitungen 18a, 18b, 18c, 18d jeweils mit der Steuerzentrale 19 verbunden sind. In der Verbindungsrohrleitung 14 ist ein dynamisch-elastisches Entkopplungsventil 20 (Quenchventil) angeordnet, das über die Verbindungsleitung 21 von der elektronischen Steuerzentrale 19 angesteuert wird. Dieses Entkopplungsventil wird so angesteuert, daß es den Querschnitt der Verbindungsrohrleitung 14 vor Erreichen der Flammenfront verschließt. Die Druckentlastungsvorrichtungen 13a, 13b im Bereich der Rohrkrümmer am Ein- bzw. Auslauf der Apparaturen 15, 11 sind installiert, um hohe Druckspitzen in der Rohrleitung 14 zu vermeiden. In der Druckentlastungsvorrichtung 13a, 13b ist eine Berstscheibe integriert, die bei einer auftretenden Druckspitze anspricht und die Explosion ohne Flammenausbreitung über das Quenching-Rohr in den Raum hinein entlastet.The system housed in a
Gleichzeitig wird über den in der Vorrichtung 13a integrierten Signalgeber ein Signal an die elektronische Steuerzentrale 19 gegeben, die das Entkopplungsventil 20 betätigt, so daß auch bei Hineinlaufen einer Explosion in die Verbindungsrohrleitung 14 vor dem Ansprechen der Druckentlastungsvorrichtung 13 der Apparatur 11 eine Entkopplung gewährleistet ist, durch die die Apparatur 15 geschützt ist.At the same time, a signal is given to the
Die elektronische Steuerzentrale 19 hat eine Notstromversorgung und überwacht die Energieversorgung für das Entkopplungsventil 20 und überwacht darüberhinaus alle Zuleitungen auf Kabelbruch und Erdschluß. Für die Sicherheit der Anlage wichtige Schaltvorgänge können über die Steuerzentrale 19 eingeleitet werden. Bei Ausfall der Netz- und Notstromversorgung für die Steuerzentrale 19 oder Abfall der Energieversorgung für das dynamisch-elastische Entkopplungsventil 20 wird dieses automatisch geschlossen unter gleichzeitiger Einleitung der für die Sicherheit der Anlage wichtigen Schaltvorgänge. Z. B. kann die Abschaltung bestimmter Bauteile 22 der Anlage wie z. B. eines Gebläses über die mit der Steuerzentrale 19 verbundene Leitung 23 erfolgen.The
Claims (6)
- Dust conducting plant with a device for protection against explosion of dust materials, characterised in that a first dust conducting apparatus (11) and at least a second apparatus (15) are connected by a connecting pipeline (14) and in the starting region of the first apparatus (11) there is arranged, in the region of a pipe bend (16) of the connecting pipeline (14), a pressure relief device (13a) with an integrated signal transmitter,
that in the connecting pipeline (14) between the two apparatus (11, 15) there is arranged a decoupling valve (20) which is controllable by a control centre (19) via a line (21),
the signal transmitter of the pressure relief device (13a) is supplying a signal to the control centre (19) via a line (18c) in the case of a pressure peak, as a result thereof, the control centre (19) switches the decoupling valve (20) and closes the connecting pipeline (14). - Dust conducting plant with a device for protection against explosion of dust materials as claimed in claim 1, characterised in that additionally in the region of the inlet to the apparatus (15) in the region of a pipe bend (17) of the connecting pipeline (14) there is provided a pressure relief device (13b) with an integrated signal transmitter, which is connected via a line (18d) to the control centre (19).
- Dust conducting plant with a device for protection against explosion of dust materials as claimed in claim 1 or 2, characterised in that the apparatus (11) and/or the apparatus (15) comprise a pressure relief device (13, 13c).
- Dust conducting plant with a device for protection against explosion of dust materials as claimed in any one of claims 1 to 3, characterised in that for the pressure relief devices (13, 13c) there are provided integrated signal transmitters which are connected to the control centre (19) via lines (18a, 18b).
- Dust conducting plant with a device for protection against explosion of dust materials as claimed in any one of claims 1 to 4, characterised in that the control centre supervises the energy supply of the decoupling valve (20) and causes a switching off of structural elements (22) of the plant in the case of disturbances in the energy supply.
- Process for the protection of a dust conducting plant as claimed in any one of claims 1 to 5 against the effects of an explosion of dust materials, characterised in that in the case of a pressure peak in the connecting pipeline (14) in the region of the pipe bend (16) the signal transmitter integrated in the pressure relief device (13a) supplies a signal via the line (18c) to the control centre (19) and the control centre (19) as a result thereof switches the decoupling valve (20) via the line (21) and closes the connecting pipeline (14) to the apparatus (15).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4207320 | 1992-03-07 | ||
| DE4207320A DE4207320C2 (en) | 1992-03-07 | 1992-03-07 | Plant protected against dust explosions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0559968A1 EP0559968A1 (en) | 1993-09-15 |
| EP0559968B1 true EP0559968B1 (en) | 1997-03-12 |
Family
ID=6453521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92122136A Expired - Lifetime EP0559968B1 (en) | 1992-03-07 | 1992-12-30 | Device for protection against explosion of dust materials |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0559968B1 (en) |
| AT (1) | ATE149849T1 (en) |
| DE (2) | DE4207320C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2483768C2 (en) * | 2009-05-27 | 2013-06-10 | Олег Савельевич Кочетов | Valve with flame arrester of belt type |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0935981A1 (en) * | 1998-02-11 | 1999-08-18 | STMicroelectronics S.r.l. | Flame and fumes stopping device for suction ducts |
| DE102004044980B4 (en) | 2004-09-16 | 2018-03-29 | DISA Danmark A/S | Conveying system for pourable bulk material and method for operating such a conveyor system |
| CN102753239A (en) | 2009-10-14 | 2012-10-24 | Bs&B安全系统有限公司 | Flame mitigation device and system |
| DE102013101004B3 (en) * | 2013-01-31 | 2014-05-08 | Mario Holtewert GmbH | Shut-off device for process lines through which a storage container can be filled with dust-like materials or explosives |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1672042A (en) * | 1926-08-21 | 1928-06-05 | Staytite Company | Combination tank vent, flame arrester and snuffer |
| US1907976A (en) * | 1929-01-09 | 1933-05-09 | Union Oil Co | Flame arrester and safety relief for vapor lines |
| GB1157235A (en) * | 1966-10-19 | 1969-07-02 | Asea Ab | Improved Valve |
| US3909954A (en) * | 1974-04-03 | 1975-10-07 | Marc K Zoukourian | Device for prevention and protection against fire and explosion in the lines of the treatment of inflammable comminuted products |
| DE3140553A1 (en) * | 1981-10-13 | 1983-04-21 | Bühler-Miag GmbH, 3300 Braunschweig | EXPLOSION PROTECTED VERTICAL SUPPORT |
| DE3607141A1 (en) * | 1986-03-05 | 1987-09-10 | Irs Ind Rationalis Syst Gmbh | METHOD AND DEVICE FOR EXPLOSION PROTECTION OF SYSTEMS, PIPELINES AND THE LIKE THROUGH PRESSURE MONITORING |
| DE3617522C1 (en) * | 1986-05-24 | 1987-07-02 | Vsr Eng Foerdertechnik | Device for the abrupt shut-off of pipelines, especially dust-carrying pipelines, in the event of explosions |
| DE3822012C2 (en) * | 1988-06-30 | 2003-02-06 | Rembe Gmbh Mes Und Regeltechni | Quenching device |
| US5052494A (en) * | 1990-04-04 | 1991-10-01 | Advanced Innovations, Inc. | Explosion suppression device |
| US5298886A (en) * | 1990-06-14 | 1994-03-29 | Tokyo Gas Company Limited | Fluidic flowmeter equipped with a micro flow sensor |
-
1992
- 1992-03-07 DE DE4207320A patent/DE4207320C2/en not_active Expired - Fee Related
- 1992-12-30 AT AT92122136T patent/ATE149849T1/en not_active IP Right Cessation
- 1992-12-30 EP EP92122136A patent/EP0559968B1/en not_active Expired - Lifetime
- 1992-12-30 DE DE59208188T patent/DE59208188D1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2483768C2 (en) * | 2009-05-27 | 2013-06-10 | Олег Савельевич Кочетов | Valve with flame arrester of belt type |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0559968A1 (en) | 1993-09-15 |
| DE59208188D1 (en) | 1997-04-17 |
| DE4207320C2 (en) | 2000-08-10 |
| ATE149849T1 (en) | 1997-03-15 |
| DE4207320A1 (en) | 1993-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1683548A1 (en) | Inerting method for avoiding fire | |
| EP0559968B1 (en) | Device for protection against explosion of dust materials | |
| DE19536292C2 (en) | Method and device for reducing a detonation in a container or piping system | |
| EP0360004B1 (en) | Device for explosion pressure relief | |
| EP0695562A2 (en) | Stationary fire-extinguishing apparatus | |
| DE3822012C2 (en) | Quenching device | |
| EP1239924A2 (en) | Method and device for damping the pressure surge on flame arresters in the case of detonations | |
| EP2866903B1 (en) | Method for diluting and/or flushing out clouds of combustible gases | |
| EP2322251B1 (en) | Method for operating a fire extinguishing assembly | |
| EP0010734B1 (en) | Equipment proofed against explosion and detonation | |
| EP2863500A2 (en) | Fire protection device | |
| DE102005023101A1 (en) | Inert gas e.g. nitrogen, introducing method for fire-extinguishing system, involves conducting compressed inert gas with defined flow-rate into fire-extinguishing or protection area to maintain intended room pressure | |
| EP0076958A2 (en) | Explosion-proof elevator | |
| DE3634451C2 (en) | ||
| DE3102865A1 (en) | Safety shut-off device for domestic gas connections | |
| WO2002066114A1 (en) | Fine spray lance | |
| DE2819666A1 (en) | Paint spray gun for fluids or powders - incorporates fire extinguishing unit with extinguisher valve adjacent paint spray nozzle | |
| DE19935308A1 (en) | Fire extinguishing equipment | |
| DE2939151A1 (en) | FIRE EXTINGUISHING METHOD AND DEVICE | |
| DE102008038275A1 (en) | Fire detection system for use in e.g. road tunnel, has region controllers, where one of controllers with fire detection information supports local fire detection unit and controllers are activated by fire detection unit in case of fire | |
| DE885584C (en) | Gas exhaust, especially for electrical switchgear | |
| DE202014104404U1 (en) | Explosion protection device | |
| DE10306652B4 (en) | Driving jet, in order to exclude deposits in danger-threatening quantity | |
| DE600185C (en) | Device for preventing the propagation of detonation waves in conduits | |
| DE10117899A1 (en) | Process for monitoring a gas stream |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
| 17P | Request for examination filed |
Effective date: 19930927 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 17Q | First examination report despatched |
Effective date: 19960530 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19970312 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970312 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970312 Ref country code: DK Effective date: 19970312 Ref country code: FR Effective date: 19970312 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19970312 |
|
| REF | Corresponds to: |
Ref document number: 149849 Country of ref document: AT Date of ref document: 19970315 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59208188 Country of ref document: DE Date of ref document: 19970417 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Effective date: 19970612 Ref country code: SE Effective date: 19970612 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19970617 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| EN | Fr: translation not filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971230 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971231 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971231 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980330 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D Ref document number: 72807 Country of ref document: IE |
|
| BERE | Be: lapsed |
Owner name: REMBE G.M.B.H. MESS- UND REGELTECHNIK Effective date: 19971231 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980630 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20061109 Year of fee payment: 15 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20061114 Year of fee payment: 15 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20071230 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071230 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071230 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20090212 Year of fee payment: 17 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100701 |