EP0559968A1 - Dispositif de protection contre des explosions de poussière - Google Patents

Dispositif de protection contre des explosions de poussière Download PDF

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Publication number
EP0559968A1
EP0559968A1 EP92122136A EP92122136A EP0559968A1 EP 0559968 A1 EP0559968 A1 EP 0559968A1 EP 92122136 A EP92122136 A EP 92122136A EP 92122136 A EP92122136 A EP 92122136A EP 0559968 A1 EP0559968 A1 EP 0559968A1
Authority
EP
European Patent Office
Prior art keywords
dust
control center
pressure relief
connecting pipeline
event
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
EP92122136A
Other languages
German (de)
English (en)
Other versions
EP0559968B1 (fr
Inventor
Bernhard Penno
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.)
Rembe Mess- und Regeltechnik GmbH
Original Assignee
Rembe Mess- und Regeltechnik 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
Application filed by Rembe Mess- und Regeltechnik GmbH filed Critical Rembe Mess- und Regeltechnik GmbH
Publication of EP0559968A1 publication Critical patent/EP0559968A1/fr
Application granted granted Critical
Publication of EP0559968B1 publication Critical patent/EP0559968B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 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 to one another 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 in such a way 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 preferably initiated slowly and not abruptly, since the quench effect is used here as well as 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-OS 38 22 012.
  • a connecting pipeline 14 leads to a second apparatus 15.
  • devices 13a, 13b for the explosion pressure relief are also arranged, 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-OS 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 and 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 out, the latter is automatically closed while initiating the switching processes which are important for the safety of the system. 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)
  • Refuse Collection And Transfer (AREA)
  • Cleaning In General (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Pipeline Systems (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP92122136A 1992-03-07 1992-12-30 Dispositif de protection contre des explosions de poussière Expired - Lifetime EP0559968B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4207320 1992-03-07
DE4207320A DE4207320C2 (de) 1992-03-07 1992-03-07 Gegen Staubexplosionen geschützte Anlage

Publications (2)

Publication Number Publication Date
EP0559968A1 true EP0559968A1 (fr) 1993-09-15
EP0559968B1 EP0559968B1 (fr) 1997-03-12

Family

ID=6453521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92122136A Expired - Lifetime EP0559968B1 (fr) 1992-03-07 1992-12-30 Dispositif de protection contre des explosions de poussière

Country Status (3)

Country Link
EP (1) EP0559968B1 (fr)
AT (1) ATE149849T1 (fr)
DE (2) DE4207320C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0935981A1 (fr) * 1998-02-11 1999-08-18 STMicroelectronics S.r.l. Dispositif d'arrêt de flamme et des fumées pour tuyaux d'aspiration
WO2011047029A1 (fr) * 2009-10-14 2011-04-21 Geoffrey Brazier Dispositif et système d'atténuation de flamme

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044980B4 (de) * 2004-09-16 2018-03-29 DISA Danmark A/S Förderanlage für rieselfähiges Schüttgut und Verfahren zum Betreiben einer derartigen Förderanlage
RU2483768C2 (ru) * 2009-05-27 2013-06-10 Олег Савельевич Кочетов Клапан с огнепреградителем ленточного типа
DE102013101004B3 (de) * 2013-01-31 2014-05-08 Mario Holtewert GmbH Absperrvorrichtung für Prozessleitungen, über die ein Lagerbehälter mit staubförmigen Materialien oder Explosivstoffen befüllbar ist

Citations (5)

* Cited by examiner, † Cited by third party
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
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
EP0076958A2 (fr) * 1981-10-13 1983-04-20 Bühler-MIAG GmbH Elévateur protégé contre l'explosion
US5052494A (en) * 1990-04-04 1991-10-01 Advanced Innovations, Inc. Explosion suppression device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1157235A (en) * 1966-10-19 1969-07-02 Asea Ab Improved Valve
DE3607141A1 (de) * 1986-03-05 1987-09-10 Irs Ind Rationalis Syst Gmbh Verfahren und vorrichtung zum explosionsschutz von anlagen, rohrleitungen u. dgl. durch druckueberwachung
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 (de) * 1988-06-30 2003-02-06 Rembe Gmbh Mes Und Regeltechni Quenching-Vorrichtung
US5298886A (en) * 1990-06-14 1994-03-29 Tokyo Gas Company Limited Fluidic flowmeter equipped with a micro flow sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
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
EP0076958A2 (fr) * 1981-10-13 1983-04-20 Bühler-MIAG GmbH Elévateur protégé contre l'explosion
US5052494A (en) * 1990-04-04 1991-10-01 Advanced Innovations, Inc. Explosion suppression device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0935981A1 (fr) * 1998-02-11 1999-08-18 STMicroelectronics S.r.l. Dispositif d'arrêt de flamme et des fumées pour tuyaux d'aspiration
US6318475B1 (en) 1998-02-11 2001-11-20 Stmicroelectronics S.R.L. Flames and fumes stopping device for suction ducts
WO2011047029A1 (fr) * 2009-10-14 2011-04-21 Geoffrey Brazier Dispositif et système d'atténuation de flamme
US9757602B2 (en) 2009-10-14 2017-09-12 Bs&B Safety Systems Limited Flame mitigation device and system

Also Published As

Publication number Publication date
ATE149849T1 (de) 1997-03-15
DE4207320C2 (de) 2000-08-10
DE4207320A1 (de) 1993-09-09
EP0559968B1 (fr) 1997-03-12
DE59208188D1 (de) 1997-04-17

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