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EP0951922B1 - Procédé pour neutraliser une onde de détonation et dispositif pare-flamme - Google Patents

Procédé pour neutraliser une onde de détonation et dispositif pare-flamme Download PDF

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Publication number
EP0951922B1
EP0951922B1 EP99105224A EP99105224A EP0951922B1 EP 0951922 B1 EP0951922 B1 EP 0951922B1 EP 99105224 A EP99105224 A EP 99105224A EP 99105224 A EP99105224 A EP 99105224A EP 0951922 B1 EP0951922 B1 EP 0951922B1
Authority
EP
European Patent Office
Prior art keywords
flame
detonation
pipe
arresting device
safety device
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
Application number
EP99105224A
Other languages
German (de)
English (en)
Other versions
EP0951922A3 (fr
EP0951922A2 (fr
Inventor
Christoph Dipl.-Ing. Leinemann
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.)
Leinemann GmbH and Co KG
Original Assignee
Leinemann 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.)
Filing date
Publication date
Application filed by Leinemann GmbH and Co KG filed Critical Leinemann GmbH and Co KG
Priority to SI9930874T priority Critical patent/SI0951922T1/sl
Publication of EP0951922A2 publication Critical patent/EP0951922A2/fr
Publication of EP0951922A3 publication Critical patent/EP0951922A3/fr
Application granted granted Critical
Publication of EP0951922B1 publication Critical patent/EP0951922B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D5/00—Safety arrangements
    • F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
    • F42D5/045—Detonation-wave absorbing or damping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/20—Spark arrester

Definitions

  • the invention relates to a method for rendering harmless a in a pipeline led detonation front with the help of a Flame arrester.
  • the invention further relates to a detonation fuse with a suitable for installation in a pipeline or container system Housing, in the at least one pipe socket with a specific Pipe diameter protrudes and in the one the flame passage preventing flame arrester is arranged, whose Diameter is significantly larger than the pipe diameter.
  • the propagation of an explosion of an ignitable gas mixture in a container or piping system can be used as a detonation or deflagration done.
  • the detonation is superimposed the flame front and the one formed by the blast of the blast Shock front, while during deflagration the shock waves leading the flame front.
  • the flame propagation speed of deflagrations are some 100 m / s and the Combustion pressures in the direction of impact at up to 10 bar (at a Outlet pressure of the mixtures of 1 bar), while in detonations Flame propagation speeds of several 1,000 m / s and pressures in the direction of impact of up to 100 bar may occur.
  • a detonation fuse consisting of a detonation brake and a flame arrester is known from DE-PS 1 192 980.
  • the propagating through a pipeline detonation front is in the known device by the convex outside divided a circular cylindrical wall and passes in an expansion space with an opposite the pipeline enlarged Volume.
  • the split detonation front can only after several deflections run against the flame arrester, which in attached to an outlet nozzle, which is 90 ° opposite the Piping is angled, in which the detonation originally has spread.
  • the several deflections will be generated by having a second semicircular wall with a smaller diameter is provided, with each other facing free wall pieces are arranged overlapping each other and thereby form a kind of labyrinth.
  • the present invention is therefore based on the problem, a To ensure protection against detonations with simple and inexpensive to be created means is realizable, no high pressure loss for the gases flowing through and yet a high Guaranteed ignition safety.
  • a Detonation assurance of the type mentioned in the present invention characterized in that at least one pipe socket to form a free Interspace extends close to the flame arrester, so one through the Pipe socket progressing detonation front substantially completely and without deflection by a bumper on only a portion of the Flame barrier hits and that around the pipe socket around a sufficiently large Expansion space for the formation of a deflagration is present.
  • the core of present invention is the detonation front only in one Part of the flame arrester to make this impact by the Detonation front with a pipe socket very close to the flame arrester is introduced. This creates on the incoming side of the flame arrester an expansion space, so that the detonation front in front of the flame barrier in Expansion space caused by secondary ignition a deflagration. There the flame barrier is hit only in the partial area of the detonation front, it provides a high flow resistance for the detonation front.
  • the free Cross-sectional area of the entire flame arrester is preferably the same or greater than the pipe diameter of the pipe socket.
  • the pipe section becomes brought so close to the flame barrier, that of the detonation front met partial area substantially equal to the pipe diameter.
  • the Flame barrier preferably has an overall diameter, the at least twice the diameter of the portion corresponds to in normal operation to achieve low pressure drops.
  • the operation of the arrangement according to the invention is in relation to the Flame extinguishing behavior the more favorable the closer the end of the pipe socket the flame arrester is introduced.
  • a lower limit for the reduction the free space between the end of the pipe socket and the Flame barrier results from the fact that in normal operation of the Total cross section of the flame arrester at the usual, relatively low Flow rates is still sufficiently uniformly flowed.
  • the detonation fuse according to the invention the free distance between the end of the pipe socket and the flame arrester greater than or equal to one third and less than / equal to that Pipe diameter.
  • the length of the interior is on the Side of the pipe socket to the flame arrester preferably more than 0.6 times the pipe diameter and may preferably less than or equal to 2 times the pipe diameter and can, in particular when using a pre-ignition explained below be reduced to half the pipe diameter.
  • the effect according to the invention of the impact of the detonation front on the portion of the flame barrier, through which the flame arrester the detonation front provides a high flow resistance, can be further enhanced by the fact that the flame arrester is formed differently in the subarea than in the Subarea surrounding border area.
  • the detonation fuse according to the invention can be in the pipe socket with against the pipe diameter small connection openings for Be provided the expansion tube surrounding the pipe socket to by a pre-ignition through the detonation front in the expansion space to cause a pre-combustion, so that by pre-burned Gases of tendency to re-form a detonation front in the expansion space, in particular by a reflection the flame wall of the expansion wall, is effectively countered, so that the length of the expansion space can be reduced.
  • the detonation fuse For dividing the detonation front into several partial detonation fronts can the detonation fuse according to the invention a Having plurality of pipe socket before the flame arrester, wherein the majority of pipe connections preferably rotationally symmetrical are arranged to the central axis of the flame arrester.
  • FIG. 1 schematically shows a detonation fuse which, like FIG this is shown in dashed lines, with a in a pipeline 1 insertable housing 2 is formed.
  • the housing 2 is on flanged to both ends of the pipe and forms a Interior 3 of the housing 2.
  • In the interior 3 protrudes from a Side of a pipe 1 continuing pipe 1 in it, in front of a centrally arranged in the housing 2 flame arrester 5 ends.
  • FIG. 1 shows a detonation front starting through the pipe socket 4 8, on one as a portion 9 of the flame arrester 5 hits.
  • FIG. 2 illustrates that the pipe socket 4, which continues the pipe 1, has a diameter D and that the detonation front 8 practically impinges with the diameter D on the portion 9 of the flame arrester 5, which thus also has approximately the diameter D.
  • the shock wave of the detonation front 8 strikes the small diameter D to a relatively high flow resistance of the flame arrester 5, so that the detonation front 8 is partially reflected by the flame arrester 5 or extinguished when penetrating into the portion of the flame arrester 5.
  • an expansion space 13 of the housing 6 a secondary ignition.
  • the expansion space 13 extends over a length L 1 of the mouth of the pipe socket 4 back from the flame arrester 5 away.
  • the free cross section of the flame arrester 5 corresponds at least the cross-sectional area of the pipe socket 4 with the pipe diameter D or is larger, so that for a according to Figure 3 not as Detonation front 8, but as normal flow 11 traversing Gas no significant pressure loss through the flame arrester 5 arises.
  • Figure 3 shows that the free distance L 2 between the mouth end of the pipe socket 4 and the pipe socket 4 facing surface of the flame arrester 5 is selected so that in normal operation, the flame arrester 5 is flowed through by the flow medium uniformly. This is the case when the length of the gap L 2 is greater than / equal to one-third and less than / equal to the inner diameter D.
  • the embodiment shown in Figure 4 corresponds to the Embodiment according to Figure 1 with the only difference that provided on both sides of the flame arrester 5 a pipe socket 4 is, so that the detonation fuse shown in Figure 4 for detonation fronts 8 coming from both sides suitable is.
  • FIG. 5 further embodiment of the invention differs from the embodiment shown in Figure 1 in that the flame arrester 5 'in the partial area 9 'is made with narrower gap widths, so that the flame arrester 5 'of the detonation front 8 through the narrowed portion 9 'still opposes a higher flow resistance.
  • the pipe socket 4 is provided with small connection openings 12, branched off by the incoming detonation front 8 immediately after the beginning of the housing 2 a part and directly into the Expansion chamber 13 is passed, where precombustion takes place by the ignition of the branched part of the detonation front 8, so that burnt gases in the expansion space 13 prevents the formation of a secondary detonation by reflection of a deflagration on the rear wall 10 of the housing 2 and thereby reduces the length L 1 can be.
  • the fifth embodiment illustrated in FIGS. 7 and 8 provides for the flame arrester 5 to be designed to be extremely large in relation to the diameter D of the pipeline 1, in order to obtain a very low pressure loss through the flame arrester 5 during normal operation.
  • a plurality of pipe stubs 4 ' are arranged distributed over the cross section of the flame arrester 5.
  • FIG. 7 illustrates that this causes a detonation front, which starts in the pipeline 1, to be distributed over a plurality of partial detonation fronts 8 ', which impinge on associated partial regions 9 "of the flame arrester 5.
  • the length L 1 of the expansion space 13 'delimiting rear end wall 10' is formed by wall pieces which define a distribution chamber 14 in the flow direction in front of the flame arrester 5, which widens starting from the diameter D of the pipe 1 to the effective diameter of the flame arrester 5 and in the pipe socket 4 'passes.
  • the arrangement of the pipe socket 4 'shown in Figure 7 has a central pipe socket 4', which is aligned with the pipe 1, but has a slightly smaller diameter than the pipe 1.
  • Figure 8 illustrates the normal operation in which pass through the pipe stub 4 'normal part flows 11' and distribute evenly over the cross-sectional area of the flame arrester 5.
  • the length L 1 ⁇ 0.5 D and ⁇ 2 D and the length L 2 is between ⁇ 1/3 D and ⁇ 1 D.
  • the optimization of the lengths L 1 and L 2 depends on the pressure loss through the flame arrester 5 off.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Earth Drilling (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Ceramic Products (AREA)
  • Press Drives And Press Lines (AREA)
  • Disintegrating Or Milling (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Cleaning In General (AREA)
  • Thermal Insulation (AREA)
  • Pipe Accessories (AREA)
  • Ladders (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Claims (16)

  1. Procédé pour neutraliser un front de détonation (8) guidé dans une conduite (1) au moyen d'une barrière de flamme (5,5'), caractérisé en ce que le front de détonation (8) est conduit sensiblement, complètement et sans déviation par un pare-choc, au moyen d'au moins un embout tubulaire (4, 4') de façon suffisamment proche d'une barrière de flamme (5, 5') présentant un diamètre plus grand par rapport à la conduite (1) pour que le front de détonation (8, 8') atteigne seulement une zone partielle (9, 9', 9") de la barrière de flamme (5, 5'), et que le front de détonation (8, 8') puisse s'expanser avant la barrière de flamme (5, 5') dans une chambre d'expansion (13) réalisée autour des embouts tubulaires (4, 4') pour qu'une déflagration soit créée qui atteigne la section transversale extérieure de la barrière de flamme (5, 5').
  2. Procédé selon la revendication 1, caractérisé en ce qu'une partie réduite du front de détonation (8) est déviée pour s'expanser dans la chambre d'expansion (13) afin de brûler préalablement dans la chambre d'expansion (13).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le front de détonation (8) est dirigé sous forme de plusieurs fronts partiels de détonation (8') sur plusieurs zones partielles (9") de la barrière de flamme (5, 5').
  4. Dispositif anti-détonation comportant un boítier (2) apte à être incorporé dans un récipient ou un système de conduites (1) dans lequel est agencée une barrière de flamme (5, 5') empêchant le passage de la flamme dont le diamètre est significativement plus grand que le diamètre (D) des conduites, caractérisé en ce qu'au moins un embout tubulaire (4, 4') s'étend jusqu'à la proximité de la barrière de flamme (5) en créant un espace libre intermédiaire pour que le front de détonation (8, 8') progressant dans les embouts tubulaires (4, 4') atteigne sensiblement, complètement et sans déviation par un pare-choc, seulement une zone partielle (9, 9') de la barrière de flamme (5, 5'), et que, autour des embouts tubulaires (4, 4'), est créée une chambre d'expansion (13) suffisamment grande pour créer une déflagration.
  5. Dispositif anti -détonation selon la revendication 4, caractérisé en ce que la distance libre (L2), comprise entre les extrémités des embouts tubulaires (4, 4') et la barrière de flamme (5, 5'), n'est pas plus grande que le diamètre (D) des conduites.
  6. Dispositif anti-détonation selon la revendication 4 ou 5, caractérisé en ce que la distance libre (L2), comprise entre les extrémités des embouts (4, 4') et la barrière de flamme (5, 5'), n'est pas plus petite que 1/3 du diamètre (D) des conduites.
  7. Dispositif anti-détonation selon l'une des revendications 4 à 6, caractérisé en ce que l'espace intérieur (3) du boítier (2) est cylindrique et présente une section correspondant sensiblement à la section de la barrière de flamme (5, 5').
  8. Dispositif anti-détonation selon la revendication 7, caractérisé en ce que la longueur (L1) de l'espace intérieur (3) du côté des embouts tubulaires (4, 4') jusqu'à la barrière de flamme (5, 5') n'est pas plus petite que 0,5 fois le diamètre (D) des conduites.
  9. Dispositif anti-détonation selon la revendication 7 ou 8, caractérisé en ce que la longueur (L1) de l'espace intérieur (3) sur le côté des embouts tubulaires (4, 4') jusqu'à la barrière de flamme (5, 5') n'est pas plus grande que le double du diamètre (D) des conduites.
  10. Dispositif anti-détonation selon l'une des revendications 4 à 9, caractérisé en ce que la barrière de flamme (5') est dans la partie de zone (9') réalisée différemment que dans la partie qui entoure la partie de zone (9').
  11. Dispositif anti-détonation selon la revendication 10, caractérisé en ce que la barrière de flamme (5') est réalisée dans la partie de zone (9') avec une largeur de fentes plus étroite que dans la zone périphérique.
  12. Dispositif anti-détonation selon la revendication 11, caractérisé en ce que la longueur des fentes de la barrière de flamme (5, 5') est la même sur l'ensemble de sa section.
  13. Dispositif anti-détonation selon l'une des revendications 4 à 12, caractérisé en ce que les embouts tubulaires (4, 4') présentent des ouvertures (12) qui sont petites par rapport au diamètre (D) des conduites, qui sont dirigées vers les embouts tubulaires (4, 4') et qui entourent la chambre d'expansion (13).
  14. Dispositif anti-détonation selon l'une des revendications 4 à 13, caractérisé en ce que des embouts tubulaires (4, 4') sont prévus de chaque côté de la barrière de flamme (5, 5').
  15. Dispositif anti-détonation selon l'une des revendications 4 à 14, caractérisé en ce que plusieurs embouts tubulaires (4, 4') sont disposés devant la barrière de flamme (5, 5').
  16. Dispositif anti-détonation selon la revendication 15, caractérisé en ce que la pluralité des embouts tubulaires (4') est disposée de façon symétrique en rotation par rapport à l'axe central de la barrière de flamme (5, 5').
EP99105224A 1998-04-25 1999-03-13 Procédé pour neutraliser une onde de détonation et dispositif pare-flamme Expired - Lifetime EP0951922B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9930874T SI0951922T1 (sl) 1998-04-25 1999-03-13 Postopek za doseganje neskodljivosti eksplozijskega frontalnega vala in eksplozijska varovalka

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19818572 1998-04-25
DE19818572A DE19818572C1 (de) 1998-04-25 1998-04-25 Verfahren zum Unschädlichmachen einer Detonationsfront und Detonationssicherung

Publications (3)

Publication Number Publication Date
EP0951922A2 EP0951922A2 (fr) 1999-10-27
EP0951922A3 EP0951922A3 (fr) 2001-07-25
EP0951922B1 true EP0951922B1 (fr) 2005-12-21

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Application Number Title Priority Date Filing Date
EP99105224A Expired - Lifetime EP0951922B1 (fr) 1998-04-25 1999-03-13 Procédé pour neutraliser une onde de détonation et dispositif pare-flamme

Country Status (17)

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US (2) US6342082B1 (fr)
EP (1) EP0951922B1 (fr)
JP (1) JP4146024B2 (fr)
KR (1) KR100603689B1 (fr)
AT (1) ATE313357T1 (fr)
BR (1) BR9901255A (fr)
CA (1) CA2269010C (fr)
CZ (1) CZ296165B6 (fr)
DE (2) DE19818572C1 (fr)
DK (1) DK0951922T3 (fr)
ES (1) ES2251127T3 (fr)
HU (1) HU220978B1 (fr)
NO (1) NO317802B1 (fr)
PL (1) PL188748B1 (fr)
SI (1) SI0951922T1 (fr)
SK (1) SK284694B6 (fr)
TW (1) TW427919B (fr)

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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
DE102007007330A1 (de) 2007-02-14 2008-08-21 Cosma Engineering Europe Ag Verfahren und Werkzeuganordnung zum 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
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DE102008006979A1 (de) 2008-01-31 2009-08-06 Cosma Engineering Europe Ag Vorrichtung für das Explosionsumformen
US20120189966A1 (en) * 2011-01-21 2012-07-26 Brooker Dwight E Detonation flame arrestor including a transition point/attenuation matrix and torturous path media
GB2522476A (en) * 2014-01-28 2015-07-29 Elmac Technologies Ltd Flame arrester
EP3099382B1 (fr) 2014-01-28 2023-09-06 Elmac Technologies Limited Arrête-flammes
CN104274929A (zh) * 2014-02-23 2015-01-14 精凯(天津)阀门制造有限公司 爆轰型阻火器
SK32016A3 (sk) * 2016-01-20 2017-08-02 Malad S.R.O. Usmerňovač symetrického toku tekutín v potrubiach
GB201707857D0 (en) * 2017-05-16 2017-06-28 Elmac Tech Ltd Valve apparatus
CN107842389A (zh) * 2017-11-06 2018-03-27 中煤科工集团重庆研究院有限公司 具自清洗功能的瓦斯抽放用阻火装置
CN108379761B (zh) * 2018-05-02 2024-01-26 抚顺华油能源设备厂 阻尼阻火器
CN109157780B (zh) * 2018-07-18 2019-10-01 江苏大学 一种缓冲壁流式多孔道阻火器
CN109764245A (zh) * 2019-02-19 2019-05-17 常州港华燃气有限公司 复合抑爆型天然气管道防爆灭火装置
CN110314306A (zh) * 2019-05-17 2019-10-11 普瑞泰格(南京)安全设备有限公司 一种双向阻爆轰阻火器
DE102019217856A1 (de) * 2019-11-20 2021-05-20 Robert Bosch Gmbh Brennstoffzellensystem

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Also Published As

Publication number Publication date
US20010000837A1 (en) 2001-05-10
EP0951922A3 (fr) 2001-07-25
DK0951922T3 (da) 2006-04-10
HU9901267D0 (en) 1999-06-28
EP0951922A2 (fr) 1999-10-27
CZ131199A3 (cs) 1999-11-17
SK284694B6 (sk) 2005-09-08
SK41499A3 (en) 2000-02-14
SI0951922T1 (sl) 2006-04-30
TW427919B (en) 2001-04-01
KR19990087958A (ko) 1999-12-27
JPH11311500A (ja) 1999-11-09
HU220978B1 (hu) 2002-07-29
NO991454L (no) 1999-10-26
BR9901255A (pt) 2000-03-21
HUP9901267A1 (hu) 2000-05-28
CA2269010A1 (fr) 1999-10-25
US6342082B1 (en) 2002-01-29
CZ296165B6 (cs) 2006-01-11
PL332619A1 (en) 1999-11-08
CA2269010C (fr) 2006-08-01
NO991454D0 (no) 1999-03-25
ES2251127T3 (es) 2006-04-16
KR100603689B1 (ko) 2006-07-20
ATE313357T1 (de) 2006-01-15
US6409779B2 (en) 2002-06-25
NO317802B1 (no) 2004-12-13
PL188748B1 (pl) 2005-04-29
DE19818572C1 (de) 1999-11-11
JP4146024B2 (ja) 2008-09-03
DE59912942D1 (de) 2006-01-26

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