EP1239924A2 - Procede et dispositif pour amortir le coup de belier au niveau d'arrete-flamme en cas de detonations - Google Patents

Procede et dispositif pour amortir le coup de belier au niveau d'arrete-flamme en cas de detonations

Info

Publication number
EP1239924A2
EP1239924A2 EP00991051A EP00991051A EP1239924A2 EP 1239924 A2 EP1239924 A2 EP 1239924A2 EP 00991051 A EP00991051 A EP 00991051A EP 00991051 A EP00991051 A EP 00991051A EP 1239924 A2 EP1239924 A2 EP 1239924A2
Authority
EP
European Patent Office
Prior art keywords
fuse
air
gap
channels
gap width
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.)
Withdrawn
Application number
EP00991051A
Other languages
German (de)
English (en)
Inventor
Reiner Kurt Packebusch
Horst Winkler
Jürgen BASCHIN
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.)
RMG-Gaselan Regel and Messtechnik GmbH
Original Assignee
RMG-Gaselan Regel and Messtechnik 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 RMG-Gaselan Regel and Messtechnik GmbH filed Critical RMG-Gaselan Regel and Messtechnik GmbH
Publication of EP1239924A2 publication Critical patent/EP1239924A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • A62C4/02—Flame traps allowing passage of gas but not of flame or explosion wave in gas-pipes

Definitions

  • the invention relates to a method for damping the pressure surge at flame arresters, in particular tape fuses, in the event of detonations of a combustible gas / air and / or steam / air mixture in plant, container and piping systems, in which the detonation font is split up.
  • the invention further relates to a device for damping the pressure surge on flame arresters, in particular
  • Detonation devices are elements of structural explosion protection that are intended to prevent the spread (propagation) of explosive explosions in containers, systems and especially in connecting pipelines in which flammable gas / air mixtures and / or steam / air mixtures are stored or transported. Under appropriate process conditions and configuration of the systems, especially the length of the connecting pipelines, detonations develop from deflagration with propagation speeds of up to 3000 m / s and pressure peaks of up to 100 bar.
  • the flame arresters which are known to be used in detonation arresters, the effect of which is based on the principle of flame-extinguishing gaps, must therefore withstand high mechanical and thermal loads.
  • the prior art uses construction elements on the side facing the ignition source, which weakens the shock wave of the detonation front before it hits the flame arrester.
  • a detonation brake is known from DE 28 47 500, which essentially consists of a half-cylindrical reflection wall, which absorbs a large part of the energy of the pressure shock waves and reduces the pressure shock.
  • the prior art proposes similar solutions in DE 1 075 501 and DE 1 192 980.
  • a pot-shaped bumper is also known from EP 0 375 455 A1, which is arranged in the direction of the ignition source in front of the band fuses and is intended to weaken the energy of a possible detonation.
  • EP 0 375 455 A1 which is arranged in the direction of the ignition source in front of the band fuses and is intended to weaken the energy of a possible detonation.
  • Detonation front occurs in a main front and a side front, the main front being led into the expansion space with a longer running time, so that when the main front m enters, the expansion space of these combustion gases contains the side front.
  • the wall arrangement for dividing and deflecting the detonation front forms a first line path for the main front and a second line path for the side front.
  • the cable routes are dimensioned so that the main front enters the expansion area with a delay compared to the secondary front. All of these known solutions lead to high pressure losses and to problems of reproducibility in the operating behavior of the fittings due to their internals located in the flow path or through additional lines or reflection walls for deflecting and dividing the detonation front. In addition, the internals require longer lengths, which means that the known fittings are material-intensive and also more expensive.
  • the gap widths of the channels are clearly above the standard gap widths of the respective gas / air and / or steam / air mixture, and the gap lengths of the channels are clearly above those of the tape fuse depending on the type, Temperature un ⁇ of the pressure of the gas / air or steam / air mixture set.
  • Another preferred embodiment of the method according to the invention provides that the partial reaction fronts of the detonation front are of uniform size and direction.
  • the detonation front is subdivided into partial reaction fronts in front of or near the tape fuse, so that the tape fuse is applied almost laminarly over the entire installation area largely without transverse transients.
  • a device of the type mentioned at the outset in that, on the side of the housing part facing the ignition source, a tape fuse-like pre-filter is arranged parallel to the tape fuse, the gap width of which is clearly above the standard gap width of the respective gas / air and / or Steam / air mixture and well above the gap length of the tape fuse.
  • the gap width of the pre-filter is at least 10 to 200%, preferably 80%, above the gap width of the band fuse.
  • Another preferred feature of the device according to the invention provides that the gap length of the prefilter the gap length of the tape fuse exceeds at least 1 to 20 times, preferably 6.3 times.
  • Band protection and prefilter are expediently spaced apart by a star-shaped spacing element, in which
  • a temperature sensor is arranged protruding between the belt fuse and the pre-filter.
  • the pre-filter is placed directly on the belt securing device. This makes it possible to shorten the length of the valve extremely.
  • the pre-filter is arranged upstream and / or downstream of the bumper or in or on the bumper.
  • the thermal energy is withdrawn via the boundary layers of the channel walls, which leads to a weakening of the flame front.
  • the turbulence of the partial reaction fronts is considerably reduced.
  • Partial reaction fronts from the prefilter have an almost laminar spread.
  • the present invention it is possible to reduce the pressure surges resulting from the detonation without bumpers or reflection walls with little pressure loss while reducing the overall length of the fittings.
  • FIG. 2 shows a variant according to FIG. 1, but with double-sided loading
  • FIG. 3 shows a further variant according to FIG. 1 in a corner design with one-sided loading
  • Pre-filter with bumper as a passage design with one-sided exposure
  • Fig. 5 shows another embodiment of the
  • the device 2 in which the pre-filter is placed directly on the belt fuse.
  • the device 2 In a pipeline 1, which leads to a container (not shown) with an explosive gas / air mixture, the device 2 according to the invention is fastened in the axial direction by means of a flange 3.
  • the device 2 consists of a housing part 4 and a housing part 5.
  • the flame arrestor 7, consisting of a fourfold band securing device 6, spacing elements 8 and 10, is clamped between the two housing parts 4 and 5 perpendicular to the pipe axis or housing axis according to FIG.
  • the tape fuses 6 are supported on the star-shaped spacer element 8 lying on the inside of the housing part 4.
  • the band securing devices 6 have a gap width of 0.5 mm and a gap length of 10 mm.
  • the pre-filter 9 In the housing part 5 lying towards the ignition source, there is a pre-filter 9 perpendicular to the tube axis, which is supported on the star-shaped support element 10 of the flame arrester 7.
  • the pre-filter 9 consists of a band-securing element with a gap width of 0.9 mm and a gap length of 63 mm.
  • the prefilter 9 is at the shortest distance from the actual flame arrester 7.
  • the detonation front moves towards the prefilter 9 and penetrates into the channels separated from one another in the prefilter 9 by the gap width of the individual layers of the band fuse.
  • the detonation front is subdivided into parallel partial partial front fronts which move through the channels of the tape fuse.
  • the gap width of the prefilter 9 was set to over 80% of the gap width of the band fuse 6 of the flame arrester 7. It is therefore significantly above the standard gap width of the ethylene / air mixture.
  • the selected gap length is 6.3 times the gap length of the actual band securing device 6.
  • the prefilter 9 is a direct component of the band fuse 6.
  • the partial reaction fronts of the detonation front isolated by the prefilter 9 strike the band fuse 6 directly.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Gas Burners (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

L'invention concerne un procédé servant à amortir le coup de bélier au niveau d'arrête-flamme, notamment de dispositifs de sécurité à bande, en cas de détonations d'un mélange gaz-air ou vapeur-air inflammable dans des systèmes d'installation, de réservoir et de canalisation, selon lequel le front de détonation qui s'enfle est partagé. L'invention concerne également un dispositif pour l'exécution de ce procédé, qui comporte des parties de carter situées dans des axes de tuyaux sous forme de passage ou en structure d'angles ainsi qu'un arrête-flamme sec placé dedans perpendiculairement à cet axe et constitué d'au moins un dispositif de sécurité à bande avec ou sans arrêt de coup orienté vers la source d'amorçage. L'invention vise à améliorer un procédé et un dispositif du type cité de sorte que le dispositif de sécurité à bande est sollicité uniformément avec ou sans déviation préalable du front de détonation et largement sans réflexion, la longueur hors tout étant simultanément raccourcie. A cet effet, le front de détonation est partagé en une multitude de fronts de réaction partiels par des conduits semblables à des entrefers de longueur relativement importante. De l'énergie thermique et de l'énergie cinétique sont extraites des fronts de réaction partiels lors de leur passage à travers les conduits. Les fronts de réaction partiels ainsi traités sont ensuite amenés de manière presque laminaire et sans déviation au dispositif de sécurité à bande. On utilise, pour l'exécution du procédé, un préfiltre de type dispositif de sécurité à bande dont la largeur d'entrefer est largement supérieure à la largeur d'entrefer normale du mélange gaz-air ou vapeur-air concerné et largement supérieure à la longueur d'entrefer du dispositif de sécurité à bande effectif.
EP00991051A 1999-11-25 2000-11-20 Procede et dispositif pour amortir le coup de belier au niveau d'arrete-flamme en cas de detonations Withdrawn EP1239924A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19957836 1999-11-25
DE1999157836 DE19957836B4 (de) 1999-11-25 1999-11-25 Verfahren und Vorrichtung zum Dämpfen des Druckstoßes an Flammensperren bei Detonationen
PCT/DE2000/004200 WO2001037933A2 (fr) 1999-11-25 2000-11-20 Procede et dispositif pour amortir le coup de belier au niveau d'arrete-flamme en cas de detonations

Publications (1)

Publication Number Publication Date
EP1239924A2 true EP1239924A2 (fr) 2002-09-18

Family

ID=7931004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00991051A Withdrawn EP1239924A2 (fr) 1999-11-25 2000-11-20 Procede et dispositif pour amortir le coup de belier au niveau d'arrete-flamme en cas de detonations

Country Status (4)

Country Link
EP (1) EP1239924A2 (fr)
AU (1) AU3150201A (fr)
DE (1) DE19957836B4 (fr)
WO (1) WO2001037933A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005025660B4 (de) 2005-06-03 2015-10-15 Cosma Engineering Europe Ag Vorrichtung und Verfahren zum Explosionsumformen
DE102006037742B4 (de) 2006-08-11 2010-12-09 Cosma Engineering Europe Ag Verfahren und Vorrichtung zum Explosionsumformen
DE102006037754B3 (de) 2006-08-11 2008-01-24 Cosma Engineering Europe Ag Verfahren und Vorrichtung zum Explosionsumformen
DE102006056788B4 (de) 2006-12-01 2013-10-10 Cosma Engineering Europe Ag Verschlusseinrichtung für das Explosionsumformen
DE102006060372A1 (de) 2006-12-20 2008-06-26 Cosma Engineering Europe Ag Werkstück und Verfahren für das Explosionsumformen
DE102007023669B4 (de) 2007-05-22 2010-12-02 Cosma Engineering Europe Ag Zündeinrichtung für das Explosionsumformen
DE102007036196A1 (de) 2007-08-02 2009-02-05 Cosma Engineering Europe Ag Vorrichtung für die Zufuhr eines Fluids für Explosionsumformen
DE102008006979A1 (de) 2008-01-31 2009-08-06 Cosma Engineering Europe Ag Vorrichtung für das Explosionsumformen
CN103388740B (zh) * 2013-08-13 2015-10-07 广西新天德能源有限公司 阻火器
BR112016017471A2 (pt) * 2014-01-28 2018-05-15 Elmac Tech Limited corta-chamas
CN114504753B (zh) * 2022-01-17 2023-01-17 浙江上石化机械有限公司 一种带有报警功能的阻火器
DE102023101925A1 (de) 2023-01-26 2024-08-01 Man Energy Solutions Se Rohrbündelreaktor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075501B (de) * 1960-02-11 Braunschweiger Flammenfilter Lememann S. Co , Braunschweig Detonationssicherung
DE648819C (de) * 1937-08-09 Messer & Co G M B H Trockene Gasrueckschlagsicherung
DE1192980B (de) * 1963-05-27 1965-05-13 Leinemann Co Flammenfilter Vorrichtung zur Sicherung von Behaeltern fuer feuergefaehrliche Fluessigkeiten und Gase
DE2847500B2 (de) * 1978-11-02 1980-10-30 Leinemann Co Flammenfilter Explosions- und detonationsgeschützte Armatur
CA1311409C (fr) * 1988-12-23 1992-12-15 Nicholas Roussakis Pare-flamme muni d'un dispositif attenuant les detonations
US5211554A (en) * 1990-12-20 1993-05-18 Rajewski Robert K Detonation arrestor with stacked plates
DE69305351T3 (de) * 1992-06-30 2002-11-21 Combustion Controls, Inc. Flammen- und explosionsschutzsicherung
DE4438797C1 (de) * 1994-10-18 1996-03-07 Rmg Gaselan Regel & Mestechnik Detonationssichere Armatur
DE19536292C2 (de) * 1995-09-29 1997-09-25 Leinemann Gmbh & Co Verfahren und Vorrichtung zum Abschwächen einer Detonation in einem Behälter- bzw. Rohrleitungssystem
DE19818572C1 (de) * 1998-04-25 1999-11-11 Leinemann Gmbh & Co Verfahren zum Unschädlichmachen einer Detonationsfront und Detonationssicherung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0137933A2 *

Also Published As

Publication number Publication date
DE19957836B4 (de) 2004-05-27
AU3150201A (en) 2001-06-04
WO2001037933A2 (fr) 2001-05-31
DE19957836A1 (de) 2001-06-21
WO2001037933A3 (fr) 2001-12-06

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