EP1586350B1 - Flame arrester - Google Patents

Flame arrester Download PDF

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Publication number
EP1586350B1
EP1586350B1 EP20040020712 EP04020712A EP1586350B1 EP 1586350 B1 EP1586350 B1 EP 1586350B1 EP 20040020712 EP20040020712 EP 20040020712 EP 04020712 A EP04020712 A EP 04020712A EP 1586350 B1 EP1586350 B1 EP 1586350B1
Authority
EP
European Patent Office
Prior art keywords
drum body
flame arrester
housing
flame
ring plates
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 - Fee Related
Application number
EP20040020712
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1586350A1 (en
Inventor
Hideto Hosoda
Toshiharu Kagawa
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.)
Kaneko Sangyo Co Ltd
Original Assignee
Kaneko Sangyo Co Ltd
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 Kaneko Sangyo Co Ltd filed Critical Kaneko Sangyo Co Ltd
Publication of EP1586350A1 publication Critical patent/EP1586350A1/en
Application granted granted Critical
Publication of EP1586350B1 publication Critical patent/EP1586350B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback

Definitions

  • the present invention relates to a flame arrester, for example arranged in a pipeline or in an open end or an intermediate portion of a vent system for a flammable gas.
  • the flame arrester is best applied to stop incursion of an external flame to prevent deflagration or detonation thereof.
  • a crimped ribbon one is used for a flame arrester, for example arranged in a pipeline or in an open end or an intermediate portion of a vent system for a flammable gas to stop incursion of an external flame to prevent deflagration or detonation thereof.
  • the crimped ribbon one (for example, disclosed in Japanese Patent Laid-open No. S-63-6589 ) has a wave-shaped ribbon defined by bending a thin metal plate and a flat ribbon made of the thin metal plate.
  • the conventional flame arrester disclosed in the Japanese patent has a wave-shaped ribbon defined by bending a thin metal plate and a flat ribbon made of the thin metal plate.
  • the wave-shaped ribbon and flat ribbon are layered one another, and one end of the flat ribbon is secured to a cylindrical core so that the combination of the wave-shaped ribbon and flat ribbon is wound spirally around the core to provide an arrester element.
  • the arrester element is not easily disassembled to remove clogging of the arrester, and moreover, it needs a troublesome work to re-assemble the arrester with a predetermined correctness of the clearance after removing the clogging.
  • the conventional flame arrester needs to have a larger width of the arrester element constituted by the wave-shaped ribbon and flat ribbon.
  • the larger width of the arrester element increases a pressure loss of a flammable gas flowing through the clearances.
  • the conventional flame arrester is difficult to have a small clearance to allow flowing of the flammable gas with prevention of incursion of an external flame to eliminate deflagration and detonation.
  • the conventional flame arrester is also difficult of achieving a desired manufacturing precision, causing a drawback in forming and assembling thereof.
  • the present invention aims to provide a flame arrester having a plurality of slits to pass a flammable gas.
  • the slits are surely defined without much time to allow flowing of the flammable gas with no incursion of an external flame to eliminate deflagration and detonation of the gas.
  • the flame arrester has an arrester element with a less frictional pressure loss. Furthermore, the arrester element is easily disassembled to remove clogging of the slits, and moreover, it needs only an easy work to reassemble the arrester with a predetermined correctness after removing of clogs.
  • the invention provides a flame arrester arranged in a pipeline for a flammable gas to prevent a flame from spreading from a downstream side to an upstream side of the flame arrester.
  • the flame arrester has a drum body, wherein the drum body comprises a plurality of ring plates.
  • the ring plates are layered one another with a plurality of spacers therebetween to define slits between the ring plates.
  • the drum body has a first end open to the upstream side and a second end closed to the downstream side, while the slits are open to the downstream side.
  • the flame arrester has a housing to accommodate the drum body, the flame arrester having a pair of joint pipes each disposed in the upstream or downstream side of the housing to sandwich the housing so as to align with the housing.
  • the slits are open laterally relative to a longitudinal axis of the drum body.
  • the drum body has a cover plate to close the second end of the drum body.
  • the ring plates and the spacers are removably attached to the housing.
  • the present invention provides a flame arrester having a plurality of slits to pass a flammable gas.
  • the slits are surely defined without much time to allow flowing of the flammable gas without incursion of an external flame to eliminate deflagration and detonation of the gas.
  • the flame arrester has an arresting element with a less frictional pressure loss. Furthermore, the arresting element is easily disassembled and reassembled to remove clogs in the slit, and moreover, it needs only an easy work in manufacturing and assembling with a production correctness.
  • FIGS. 1 and 2 show an embodiment 1 of a flame arrester according to the present invention.
  • a flame arrester of the embodiment is arranged in a pipeline K for a flammable gas G to prevent a reverse flow from a downstream side C2 to an upstream side C1 of the flame arrester.
  • the flame arrester has a drum body E, wherein the drum body comprises a plurality of ring plates 2.
  • the ring plates are layered one another with a plurality of spacers 3 therebetween to define slits S between the ring plates.
  • the drum body has a first end b open to the upstream side C1 and a second end a closed to the downstream side, while the slits are open to the downstream side.
  • the flame arrester 1 of the embodiment 1 is arranged in a flow passage such as an open end or an intermediate portion of a pipeline K of a vent system for a flammable gas G.
  • the flame arrester is located to stop a reverse flow of a flame from a downstream side C2 to an upstream side C1 to prevent deflagration and detonation of the gas.
  • the ring plate 2 is formed from a metal plate. There are provided a plurality of the ring plates 2 layered one another, the number of which varies to adjust a pressure loss of the flowing flammable gas G.
  • the spacer 3 is made from a metal plate or the like, most preferably from a stainless steel plate.
  • the spacers 3 are provided so as to stop a reverse flow of a flame from a downstream side (second side) C2 to prevent a disaster. Furthermore, the spacer 3 varies in thickness t to adjust the depth of the slit S according to kinds of the flammable gas G.
  • Reference numeral 5 designates a housing accommodating the drum body E attached therein with fasteners 4.
  • Reference numerals 6, 6' designate joint pipes as joint members J, J' each having a flange 6a or 6a'.
  • the joint pipes 6, 6' are positioned to face toward the upstream side C1 or the downstream side C2. Between the pipe joints 6, 6', the housing 5 having the drum body E is sandwiched to be pinched thereby.
  • Reference numerals 7, 7' designate ring-shaped gaskets positioned at a forward or rear end of the housing 5.
  • Reference numeral 8 designates each of a plurality of bolts arranged to be inserted into the flanges 6a and 6a' of the joint pipes 6, 6' to fasten the flanges 6a and 6a'.
  • Reference numeral 9 designates a nut engaged with a thread formed on one end of the bolt 8.
  • Reference numeral 10 designates a circular plate having no central hole to close one end a of the drum body E.
  • the circular plate 10 is arranged on a top of a layered assembly of the ring plates 2 and the spacers 3.
  • Reference numeral 11 designates an inner flange welded on an inner surface of the housing 5. The inner flange 11 secures the drum body E constituted by the ring plates 2, the spacers 3, and the circular plate 10 in the housing 5 with the fatteners 4.
  • the drum body E is positioned in the pipeline K having a passage T for a flammable gas G.
  • the fastener 4 is constituted by a bolt 12 and a nut 13 which align with an axial direction of the inner flange 11.
  • the flame arrester 1 of the embodiment is configured as described above.
  • the flame arrester 1 is arranged in the pipeline K such as an open end or an intermediate portion of the pipeline K of a vent system for a flammable gas G.
  • the flame arrester has a plurality of ring plates 2, the ring plates layered one another with the spacers 3 therebetween to define the slits S between the ring plates.
  • the layered body has a first end b open to the upstream side C1 and a second end a closed to the downstream side C2 by the circular plate 10, while the slits are open to the downstream side C2.
  • the gas G flows inside the ring plates 2 of the flame arrester 1 from the upstream side C1 of the passage T to flow through a plurality of the slits S defined between the ring plates 2 to flow out in an outer peripheral side of the ring plates 2 to further flow toward the downstream side C2 (an upper side of FIG. 1 ).
  • a pressure loss of the flammable gas G is adjusted by varying the number of the layered ring plates 2.
  • the flame arrester 1 of the embodiment 1 prevents incursion of the flame directly into the upstream side C1 to surely eliminate deflagration and detonation of the gas.
  • the flame arrester 1 has the drum body E constituted by the ring plates 2 and the spacers 3 layered alternately and has the circular plate 10 closing an end of the drum body E, and the drum body E is secured in the housing 5 with the fatteners 4 such that the circular plate 10 crosses the flow direction of the flammable gas G in the passage T to prevent a straight flow the gas.
  • the spacers 3 layered on the ring plates 2 vary in thickness t to adjust the depth of the slits S through which the flammable gas flows. This prevents a disaster even if the flammable gas G arises in the downstream side C2 (in an upper side of FIG. 1 ).
  • the spacer 3 has a thickness t of 0.2 mm.
  • the spacer 3 has a thickness t of 0.12 mm.
  • the flame arrester 1 of the embodiment 1 has the drum body E constituted by the ring plates 2 and the spacers 3 alternately layered and also has the circular plate 10 layered at one end of the drum body E.
  • the drum body E is secured to the inner flange 11 welded on the housing 5 in the generally cylindrical housing 5 by the fatteners 4 consisting of the bolts 12 and nuts 13 axially disposed.
  • the housing 5 having the drum body E is pinched and held between the joint pipes 6, 6' having the flange 6a or 6a' via the gasket 7 or 7' by means of a plurality of the bolts 8 and nuts 9.
  • the flame arrester provides a less frictional loss for a gas flowing therethrough.
  • the drum body E is disassembled and surely reassembled with ease. Even if the slits are clogged, cleaning thereof can be surely completed with ease.
  • the flame arrester is improved in a manufacturing accuracy and can be employed in applications and fields in which easy manufacturing and assembling are required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Gas Burners (AREA)
EP20040020712 2004-04-16 2004-09-01 Flame arrester Expired - Fee Related EP1586350B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004121410 2004-04-16
JP2004121410A JP3919197B2 (ja) 2004-04-16 2004-04-16 フレームアレスタ

Publications (2)

Publication Number Publication Date
EP1586350A1 EP1586350A1 (en) 2005-10-19
EP1586350B1 true EP1586350B1 (en) 2011-12-14

Family

ID=34926378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040020712 Expired - Fee Related EP1586350B1 (en) 2004-04-16 2004-09-01 Flame arrester

Country Status (3)

Country Link
EP (1) EP1586350B1 (ja)
JP (1) JP3919197B2 (ja)
CN (2) CN1683826A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4186567A1 (en) 2014-10-03 2023-05-31 Elmac Technologies Limited Flame arresters

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009024814A1 (de) * 2009-06-09 2010-12-16 Leinemann Gmbh & Co. Kg Flammensperranordnung
US20120189966A1 (en) * 2011-01-21 2012-07-26 Brooker Dwight E Detonation flame arrestor including a transition point/attenuation matrix and torturous path media
KR101068614B1 (ko) * 2011-02-11 2011-09-28 동남정공(주) 폭굉역화 방지장치
CN103550878B (zh) * 2013-11-04 2015-08-19 叶安生 燃气回火自动阻断装置
ITMI20132158A1 (it) * 2013-12-20 2015-06-21 F N C Fabbrica Naz Cilindr I S P A Blocco arrestafiamma per dispositivi di protezione contro la propagazione di fiamme
EP3099382B1 (en) * 2014-01-28 2023-09-06 Elmac Technologies Limited Flame arresters
JP6670181B2 (ja) * 2016-06-06 2020-03-18 岩谷産業株式会社 水素燃焼装置
JP6811464B2 (ja) * 2016-10-28 2021-01-13 金子産業株式会社 減速機構、及び減速機構付きフレームアレスタ
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
CN109596665A (zh) * 2018-12-10 2019-04-09 福州大学 无焰泄放模拟实验装置
CN112107820B (zh) * 2019-06-19 2021-12-31 中国石油化工股份有限公司 一种管道阻爆燃阻火器
IT201900018728A1 (it) 2019-10-14 2021-04-14 Innova S R L Blocco arrestatore di fiamma
WO2023239033A1 (ko) * 2022-06-08 2023-12-14 주식회사 휴밸 화염 차단 장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE232084C (ja) *
CH234193A (de) * 1943-04-20 1944-09-15 Ig Farbenindustrie Ag Vorrichtung zur Verhinderung der Fortpflanzung von Bränden und Explosionen in Rohrleitungen von Schwefelkohlenstoff-Anlagen.
US2618539A (en) * 1949-03-19 1952-11-18 Air Reduction Flashback-proof gas mixer
GB846966A (en) * 1958-01-01 1960-09-07 Amal Ltd Flame traps
FR1373802A (fr) * 1963-08-20 1964-10-02 Dispositif de protection à sec contre les retours de flamme
GB2183020B (en) * 1985-11-14 1989-10-11 Barnes Ecas Limited A flame arrestor
US6644961B2 (en) * 2001-03-27 2003-11-11 The Protectoseal Company Flame arrestor with reflection suppressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4186567A1 (en) 2014-10-03 2023-05-31 Elmac Technologies Limited Flame arresters

Also Published As

Publication number Publication date
EP1586350A1 (en) 2005-10-19
CN1683826A (zh) 2005-10-19
JP2005308230A (ja) 2005-11-04
CN101947374B (zh) 2013-01-09
JP3919197B2 (ja) 2007-05-23
CN101947374A (zh) 2011-01-19

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