Global Patent Index - EP 1239924 A2

EP 1239924 A2 2002-09-18 - METHOD AND DEVICE FOR DAMPING THE PRESSURE SURGE ON FLAME ARRESTERS IN THE CASE OF DETONATIONS

Title (en)

METHOD AND DEVICE FOR DAMPING THE PRESSURE SURGE ON FLAME ARRESTERS IN THE CASE OF DETONATIONS

Title (de)

VERFAHREN UND VORRICHTUNG ZUM DÄMPFEN DES DRUCKSTOSSES AN FLAMMENSPERREN BEI DETONATIONEN

Title (fr)

PROCEDE ET DISPOSITIF POUR AMORTIR LE COUP DE BELIER AU NIVEAU D'ARRETE-FLAMME EN CAS DE DETONATIONS

Publication

EP 1239924 A2 (DE)

Application

EP 00991051 A

Priority

  • DE 0004200 W
  • DE 19957836 A

Abstract (en)

[origin: WO0137933A2] The invention relates to a method for damping the pressure surge on flame arresters, in particular, band safety devices, in the case of detonations of gas/air and/or vapour/air mixtures in plants, tanks and pipe systems, whereby the growing detonation front is divided. The invention further relates to a device for carrying out the method, in housings lying on pipe axes, which are in the form of passages or corner-pieces and a dry flame arrester with at least one band safety device, with or without a safety stop arranged in the direction of the flame source. The aim of the invention is to improve a method and device as described above, such that the band safety device is constantly impinged upon, with or without prior baffling of the detonation front, largely reflection free and with simultaneous shortening of the overall length. The division of the detonation front into a number of partial reaction fronts is achieved by means of cleft-like channels of relatively long length. The partial reaction fronts have both heat energy and kinetic energy drawn off as they pass along the channels. The partial reaction fronts are finally guided to the band safety device, in an almost laminar and direct manner. In order to carry out the method a pre-filter like a band safety device is provided, whose gap width is clearly greater than the usual gap width of each gas/air and/or vapour/air mixture and clearly greater than the gap width of the present band safety device.

IPC 1-7 (main, further and additional classification)

A62C 4/00

IPC 8 full level (invention and additional information)

A62C 4/02 (2006.01)

CPC (invention and additional information)

A62C 4/02 (2013.01)

Citation (search report)

See references of WO 0137933A2

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0137933 A2 20010531; WO 0137933 A3 20011206; AU 3150201 A 20010604; DE 19957836 A1 20010621; DE 19957836 B4 20040527; EP 1239924 A2 20020918

INPADOC legal status


2009-10-28 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20090505

2007-01-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20061212

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020517

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: LT;LV;SI