EP3630304A1 - Flammenschutzfilter - Google Patents
FlammenschutzfilterInfo
- Publication number
- EP3630304A1 EP3630304A1 EP18728557.2A EP18728557A EP3630304A1 EP 3630304 A1 EP3630304 A1 EP 3630304A1 EP 18728557 A EP18728557 A EP 18728557A EP 3630304 A1 EP3630304 A1 EP 3630304A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- mesh
- intermediate layer
- diameter
- filter according
- 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.)
- Ceased
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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/38—Meshes, lattices or nets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/80—Sintered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
Definitions
- the invention relates to a flameproof filter, in particular a flameproof filter for use as a pressure relief body in explosion-proof enclosures of the type of protection Ex-d.
- a Flammenschutz- filter which has a greater number of wire mesh layers of different mesh size and wire thickness and preferably ⁇ also different orientation. Due to the changing mesh size and the angular offset of the individual layers against each other arise labyrinthine passages on the one hand verhin ⁇ a flameout and on the other hand offer good gas permeability.
- the individual layers are connected to each other, for example, by sintering. It turns out, however, that such flameproof filters are more centrally flowed through in the middle of pulsed pressure load, as they can occur as a result of occurring in a housing explosions than in near-edge zones.
- the flameproof filter according to the invention has a number of wire fabric layers whose mesh size does not exceed a limit value d max .
- the number of wire ⁇ fabric layers is anyhow greater than two, preferably these are five or more layers that define labyrinthine pores.
- the Flammenschutz- inventive filter comprises at least two such in each case by an on ⁇ number formed of wire gauze layers partial body, between which an intermediate layer having a mesh attached ⁇ arranged is larger than the largest mesh width lying within the specified mesh size range the two part bodies.
- Arranged between the two part bodies intermediate layer forms a pressure distribution ⁇ layer that permits transverse to the main flow direction, for example radially directed flow, thereby resulting in the intermediate layer to a pressure equalization.
- the pressure compensation can lead to a better surface utilization of the pressure relief body and thus to a Vermin ⁇ tion of the flow resistance in particular at a pulse-like pressure load. This will reduce pressure peaks more effectively than before.
- the wire fabric layers preferably have wires whose diameter is within a fixed wire diameter range D, whose upper limit d max is exceeded by any of the wires of the wire fabric layers of the two body parts.
- the intermediate layer preferably has wires with a diameter d z , which is greater than the largest lying within the wire diameter range D diammes ⁇ ser d max .
- the mesh width m z of the intermediate layer is at least 1.5 times as great as the largest mesh width m max lying in the mesh width region M.
- the intermediate layer can be formed both as a fabric and as a grid of crossing wires or by an equivalent structure. Essential is the possibility of the formation of cross flows.
- FIG. 1 shows the flameproofing filter according to the invention in a schematic cross-sectional representation
- FIG. 2 shows a detail from the cross section of the flameproof filter according to FIG. 1,
- FIGS. 3 and 4 are diagrams for illustrating the mesh sizes and wire diameter in the flameproof filter according to Figures 1 and 2,
- FIG. 5 shows a detail of the flameproof filter according to FIG. 1, in a perspective exploded view, FIG.
- Figure 6 wire fabric layers of the flameproof filter of Figure 1 to 5, in a separate perspective exploded view, and
- Figure 7 shows the flameproof filter of Figure 1 in a housing wall, in a schematic cross-sectional view upon impact of a pressure wave.
- a pressure relief ⁇ body 10 is schematically illustrated, which is attachable, for example, in or on egg ⁇ ner housing wall of an explosion-proof housing to allow rapid pressure equalization between the housing interior and the environment.
- the pressure relief body 10 has a first number of
- the wire fabric layers which are in each case interconnected in the two partial bodies 12, 14 are preferably connected, for example, by edge welding, but in particular by sintering, so that an unmanageable multiplicity of connection points distributed over the surface of the wire fabric layers 11, 13 exist.
- an intermediate layer 15 is arranged, preferably as
- Wire fabric layer is formed and the further preferably preferably stoffschlüs ⁇ sig is connected to the two partial bodies 12, 14, for example by sintering.
- the partial bodies 12, 14 with the intermediate layer 15 form a single sintered body.
- the pressure relief body 10 may be provided at its two perpendicular to the flow direction R flat sides with wire fabric layers 16, 17, for example, consist of a Drahtge ⁇ webe, which coincides with the intermediate layer 15 or its mesh size and the wire diameter the same conditions subject as the intermediate layer 15.
- Figure 2 illustrates an enlarged Aus ⁇ section II, which detects the intermediate layer 15, the body part 12 and the top layer 16.
- the diameter d z of the wire 18 is the Interlayer 15 significantly larger than each wire diameter in the body part 12 ( Figure 4).
- the partial body 12 contains more than two, preferably many, wire mesh layers 11, which preferably occupy the entire cross-section of the partial body 12 over the whole area.
- the diameter d of the present in the wire mesh layers 11 wires 19 are shown in FIG 4 in a wire diameter range D, up to a Maximal stealmes ⁇ ser d max ranges from a minimum diameter d m i n.
- the lower wire diameter limit d m i n is about 0.1 mm while the upper limit d max is preferably at most 1 mm.
- the wire diameter d z of the wire 18 of the intermediate layer 15 is set outside this through knife coater ⁇ D realm.
- the diameter d z of the wire 18 of the intermediate layer 15 is at least 1.5 times as large as the largest diameter d max of the diameter region D. The same applies to the wire 20 of the cover layer 16.
- the wire diameter of the individual wires can vary quite. It is true, however, that at least having the distance between the two partial ⁇ bodies 12, 14 defining wires, such as the wire 18 has a diameter d z of the outside diameter D range.
- the mesh size m of the supporting fabric layers 11 lies in the portion of body 12 in the mesh width region M of a minimum mesh size m m i n to to a maximum mesh size m max is enough.
- the minimum mesh size m m i n is in the range tenth millimeter while the maximum Ma ⁇ mesh size m max in the range of a millimeter is located.
- the Ma ⁇ mesh size m for the intermediate layer is greater than the maximum occurring in that part of body 12 Maschenwiete m max, preferably ⁇ example at least 1.5 times as large.
- the part body 14 preferably apply corresponding conditions.
- the number of wire fabric layers 11 may differ from the number of wire fabric layers 13 in the partial bodies 12, 14.
- Figure 5 illustrates the structure of the Druckentlas ⁇ tung body 10 in a partial exploded view.
- the wire fabric layers 11 and 13 of the partial bodies 12 and 14 adjoin the intermediate layer 15 on both flat sides thereof.
- These can, as already apparent from Figure 2, be made with different wire thicknesses and also have different Aus ⁇ directions.
- the individual layers of the partial bodies 12 and 14 each have at least preferably different mesh sizes m. While the individual layers of the body part 12, 14 m mesh sizes that lie in a mesh size range M, the mesh size is m for the intermediate layer 15 au ⁇ ßerraum this mesh size range M.
- the wire mesh consists of mutually parallel warp wires and a number of these crossing parallel weft wires.
- the partial body 12 is round in the present exemplary embodiment, so that the individual layers 11 are circular disks with respect to a central axis 21. To this center axis 21, the individual layers are each rotated by an angle ß against each other, so that, for example, weft wires superposed La ⁇ gene 11 are each rotated by this angle ß against each other. This results in a pattern of distribution over the area and different in each contact plane. points of contact at which the individual layers are materially connected to one another in the sintering process.
- the wires of one layer cover the meshes of other layers, resulting in a porous body with multiple angled non-straight through pores.
- Figure 7 illustrates the function of the printing t ⁇ lastungs stresses 10 at a take place in an internal space 22 of a housing explosion.
- the housing wall 23 of the pressure relief body 10 is arranged to allow a quick pressure equalization from the interior 22, starting in the environment.
- a flameproofing filter 10 according to the invention has two partial body parts 12, 14 consisting of different wire fabric layers 11, 13, which are interconnected by an intermediate rule position 15 are made of particularly coarse-meshed wire mesh ⁇ connected.
- the coarse-mesh wire mesh is preferential ⁇ , of a thick wire.
- Both wire diameter and the mesh size of this intermediate layer 15 are preferably ⁇ significantly larger than the mesh sizes and wire diameter of the wires used for the part body 12, 14.
- the pressure relief body 10 according to the invention combines high mechanical stability with high flame transmission safety and at the same time very low Strö ⁇ flow resistance.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017112162.5A DE102017112162A1 (de) | 2017-06-01 | 2017-06-01 | Flammenschutzfilter |
PCT/EP2018/063601 WO2018219764A1 (de) | 2017-06-01 | 2018-05-24 | Flammenschutzfilter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3630304A1 true EP3630304A1 (de) | 2020-04-08 |
Family
ID=62492602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18728557.2A Ceased EP3630304A1 (de) | 2017-06-01 | 2018-05-24 | Flammenschutzfilter |
Country Status (6)
Country | Link |
---|---|
US (1) | US20200179735A1 (de) |
EP (1) | EP3630304A1 (de) |
CN (1) | CN110891654B (de) |
DE (1) | DE102017112162A1 (de) |
RU (1) | RU2751623C2 (de) |
WO (1) | WO2018219764A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019112618A1 (de) | 2019-05-14 | 2020-11-19 | R. Stahl Schaltgeräte GmbH | Flammenschutzfilter |
RU2714544C1 (ru) * | 2019-10-17 | 2020-02-18 | Общество с ограниченной ответственностью "Центр Инновационных Технологий-Плюс" | Газообменный фильтр с функцией огнепреградителя и взрывозащиты |
CN115845296B (zh) * | 2021-09-24 | 2024-01-12 | 中国石油化工股份有限公司 | 可线更换阻火颗粒的颗粒阻火器 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165484A (en) * | 1991-09-17 | 1992-11-24 | Chaput Victor B | Oil well fire extinguisher having oil jet dispersing screens |
TW271407B (de) * | 1993-03-29 | 1996-03-01 | Sean Hsian Wei Cheng | |
CN1209345A (zh) * | 1998-09-02 | 1999-03-03 | 冶金工业部钢铁研究总院 | 一种烧结金属丝网微孔阻燃防爆元件 |
DE10112957B4 (de) * | 2001-03-17 | 2005-12-22 | Leinemann Gmbh & Co. | Flammensperrenanordnung |
RU2229909C1 (ru) * | 2003-01-30 | 2004-06-10 | Закрытое акционерное общество "Теплоогнезащита" | Огнезащитный экран-чехол (варианты) |
GB2464155A (en) * | 2008-10-09 | 2010-04-14 | Stephen Desmond Lewis | Gas pipeline flame arrester |
DE102009024814A1 (de) * | 2009-06-09 | 2010-12-16 | Leinemann Gmbh & Co. Kg | Flammensperranordnung |
DE102010016782B4 (de) * | 2010-05-04 | 2016-12-08 | R.Stahl Schaltgeräte GmbH | Druckentlastungsvorrichtung für druckfest gekapselte Gehäuse |
CN103055451A (zh) * | 2012-12-31 | 2013-04-24 | 天津诺丁汉电控设计有限公司 | 断火风道及断火方法 |
DE102014116149A1 (de) | 2014-11-06 | 2016-05-12 | R. Stahl Schaltgeräte GmbH | Flammenschutzfilter aus einer Anzahl von Schichtenfolgen sowie Anordnungen von Flammenschutzfiltern und deren Verwendung |
CN205182037U (zh) * | 2015-10-28 | 2016-04-27 | 温州祥河家禽农民专业合作社 | 沼气干式阻火器 |
-
2017
- 2017-06-01 DE DE102017112162.5A patent/DE102017112162A1/de not_active Ceased
-
2018
- 2018-05-24 CN CN201880035938.3A patent/CN110891654B/zh active Active
- 2018-05-24 WO PCT/EP2018/063601 patent/WO2018219764A1/de active Application Filing
- 2018-05-24 RU RU2019140350A patent/RU2751623C2/ru active
- 2018-05-24 EP EP18728557.2A patent/EP3630304A1/de not_active Ceased
- 2018-05-24 US US16/617,682 patent/US20200179735A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
RU2019140350A (ru) | 2021-07-09 |
CN110891654B (zh) | 2022-03-15 |
RU2019140350A3 (de) | 2021-07-09 |
WO2018219764A1 (de) | 2018-12-06 |
RU2751623C2 (ru) | 2021-07-15 |
US20200179735A1 (en) | 2020-06-11 |
DE102017112162A1 (de) | 2018-12-06 |
CN110891654A (zh) | 2020-03-17 |
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