CN1683826A

CN1683826A - Flame arrester

Info

Publication number: CN1683826A
Application number: CN 200410079157
Authority: CN
Inventors: 细田秀人; 香川俊春
Original assignee: Kaneko Sangyo Co Ltd
Current assignee: Kaneko Sangyo Co Ltd
Priority date: 2004-04-16
Filing date: 2004-09-15
Publication date: 2005-10-19
Also published as: EP1586350B1; CN101947374B; EP1586350A1; JP2005308230A; CN101947374A; JP3919197B2

Abstract

A flame arrester (1) is constructed 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), and the drum body has 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 and a second end (a) closed to the downstream side, while the slits are open to the downstream side.

Description

Flame arrester

Technical field

The present invention relates to a kind of flame arrester (flame arrester), for example be placed in pipeline interior or the openend or the interior flame arrester of mid portion of the exhaust system that is used for fuel gas.The most suitable intrusion that is used for stoping external flame of this flame arrester, what prevent to cause thus fires (deflagration) or blast.

Background technology

Traditionally, use the corrugated ribbon unit as flame arrester, for example, be placed in pipeline interior or the openend or the interior flame arrester of mid portion of the exhaust system that is used for fuel gas, stoping the intrusion of external flame, thus firing of preventing to cause thus or explode.This corrugated ribbon unit (for example, disclosed in the open No.S-63-6589 of Japan Patent) has the flat rubber belting that the wavy band that limits by crooked metal sheet and metal sheet are made.This wavy band and this flat rubber belting stack each other, and an end of this flat rubber belting is fixed to cylindrical core, and like this, the combination of this wavy band and flat rubber belting is spirally wound on around this core, has formed the remover element.

Disclosed in Japan Patent should have wavy band that limits by crooked metal sheet and the flat rubber belting of being made by metal sheet by the tradition flame arrester.This wavy band and this flat rubber belting stack each other, and an end of this flat rubber belting is fixed to cylindrical core, and the combination of this wavy band and flat rubber belting is spirally wound on around this core like this, thereby form the remover element.Yet expend time in the gap that limits exactly between this wavy band and this flat rubber belting very much.In addition, when removing the obstruction of this remover, this remover element also is not easy dismounting, and when the removing obstruction is afterwards ressembled this remover, guarantee that the accurate gap of presetting is the comparison difficulty.

In order to improve the flame cleaning ability, the remover element that this tradition flame arrester requires to be made up of this wavy band and flat rubber belting has bigger width.The width that this remover is bigger has increased the pressure loss of the fuel gas in this gap of flowing through.

In addition, this tradition flame arrester is difficult to little gap and allows fuel gas to flow and prevent that external flame from invading, and eliminates to fire and explode.This tradition flame arrester also is difficult to meet the requirements of the accuracy of manufacture, causes the shortcoming in forming and assembling thus.

Summary of the invention

In order to solve these problems of conventional art, the purpose of this invention is to provide a kind of a plurality of flame arresters that make the slit that fuel gas passes through that have.Do not need a lot of times just can limit this slit exactly, allowing fuel gas to flow and to stop the intrusion of external flame, thereby eliminated firing and exploding of this gas.This flame arrester has a remover element, makes friction pressure loss still less.In addition, this remover element is dismantled easily, so that remove the obstruction of this slit, and is easy to re-assembly this remover according to default precision after removing obstruction.

Consider the problems referred to above, the invention provides a kind of flame arrester, it is placed in the pipeline that fuel gas flows through, with stop flame from the downstream of this flame arrester upstream lateral bine prolong.This flame arrester is characterised in that: it has the drum type main body, and wherein this drum type main body comprises a plurality of annular slabs.This annular slab and a plurality of spacer each intervals therebetween stack, to limit slit between annular slab.Second end that this drum type main body has the first open end of pair upstream side and the downstream is sealed, this slit is open to the downstream simultaneously.

Preferably, this flame arrester has the shell that holds this drum type main body, and flame arrester has a pair of connecting tube, is placed in the upstream side or the downstream of this shell separately, shell is clipped in the middle, so that aim at shell.

More preferably, for this slit of longitudinal axis of this drum type main body to horizontal opening.

More preferably, this drum type main body has the cover plate of second end that is used for sealing the drum type main body.

More preferably, this annular slab and this spacer are detachably connected on the shell.

The invention provides a kind of flame arrester, its have a plurality of can be by the slit of fuel gas.Do not need a lot of times just can limit this slit exactly, flow through and stop the intrusion of external flame, thereby eliminated firing and exploding of this gas to allow fuel gas.This flame arrester has the remover element, makes friction pressure loss still less.And this remover element is dismantled easily and is reinstalled, so that remove the obstruction in the slit, and only needs gravy jobs promptly can satisfy the correctness of production in making and assembling.

Description of drawings

Fig. 1 is the cross section view that illustrates according to the embodiment 1 of flame arrester of the present invention;

Fig. 2 is the cross section view that amplifies, and the part that circle A is drawn a circle to approve among Fig. 1 is shown.

The specific embodiment

With reference to accompanying drawing, describe enforcement a kind of preferred implementing form of the present invention in detail at this.

Fig. 1 and Fig. 2 illustrate the embodiment 1 according to flame arrester of the present invention.The flame arrester of present embodiment is installed among the pipeline K that fuel gas G flows through, to stop the refluence from the downstream C2 of this flame generating means to upstream side C1.This flame arrester is characterised in that: have drum type main body E, wherein this drum type main body comprises a plurality of annular slabs 2.This annular slab and a plurality of spacers 3 therebetween stack each other, limit slit S between annular slab.This drum type main body has first end b that upstream side C1 is opened and second end that the downstream is sealed, and this slit is open to the downstream simultaneously.

The flame arrester 1 of this embodiment 1 is installed in the runner, for example open end or the mid portion of the pipeline K of the exhaust system of fuel gas G.This flame arrester be set be for stop flame from downstream C2 upstream side C1 flow backwards and the firing and explode of prevention gas.

This annular slab 2 is made by metallic plate.A plurality of annular slabs 2 that are laminated to each other and are provided with are provided here, have adjusted the pressure loss of mobile fuel gas G by the number that changes them.

Spacer 3 is made by metallic plate or homologue, preferably corrosion resistant plate.(second side) C2 flows backwards from the downstream to provide this spacer 3 to stop flame, thus the disaster of preventing.And according to the kind of fuel gas G, the thickness t that changes this spacer 3 is adjusted the width of slit S.

Reference numeral 5 refers to shell, and it holds by securing member 4 and is connected to drum type main body E on the shell.

Reference numeral 6,6 ' refers to connecting tube, all has

flange

6a or 6a ' as each of connecting elements J, J '.This connecting tube 6,6 ' faces upstream side C1 or downstream C2 is provided with.The shell 5 that holds this drum type main body E is sandwiched between this connecting tube 6,6 '.

Reference numeral 7,7 ' refers to ring washer, and it lays respectively at the front-end and back-end of shell 5.

Reference numeral 8 refers to and is arranged to insert between this connecting tube 6,6 ' flange 6a, the 6a ' with in a plurality of double-screw bolts of fastening

flange

6a and 6a ' each.Reference numeral 9 refers to and is formed on the nut of the threaded engagement on double-screw bolt 8 one ends.

Reference numeral 10 refers to the plectane that does not have centre bore, and it is used for sealing the end a of this drum type main body E.This plectane 10 is placed on the top of tinkertoy module of this annular slab 2 and this spacer 3.Reference numeral 11 refers to the inward flange that is welded on these shell 5 inner surfaces.This inward flange 11 is fixed to the drum type main body E that is made of annular slab 2, spacer 3 and plectane 10 on the shell 5 by securing member 4.Thereby this drum type main body E is set in the pipeline K, and pipeline K has the passage T that passes through for fuel gas G.

Securing member 4 is made up of bolt 12 and nut 13, and is consistent with the axis direction of inward flange 11.

The flame arrester 1 of this embodiment is constructed as described above.This flame arrester 1 is arranged among this pipeline K, for example openend or the mid portion of the pipeline K of the exhaust system that flows through of fuel gas G.This flame arrester has a plurality of annular slabs 2, and this annular slab and a plurality of spacers 3 therebetween are intervally installed, and limit slit S between annular slab.This laminated body has first end b that upstream side C1 is opened and the second end a that seals by 10 couples of downstream C2 of plectane, and this slit is open to this downstream C2 simultaneously.

When the fuel gas G of high pressure from upstream side C1 (downside Fig. 1) when flowing into this flame arrester 1, gas G flows in the annular slab 2 of flame arrester 1 from the upstream side C1 of passage T, by a plurality of slit S that limit by annular slab 2, then the peripheral part from this annular slab 2 flows out, and flows to downstream C2 (upside among Fig. 1) then.

Because gases at high pressure G flows to the peripheral part of annular slab 2 through this slit S, this slit S is and discharges gas radially like this, forms the air-flow of very thin thickness.Form very little eddy current of quantity and turbulent flow and air-flow like this and can not produce noise.

The pressure loss of regulating this fuel gas G by the quantity that changes stratiform annular slab 2.

Even produce flame at downstream C2, the flame arrester 1 of this embodiment 1 can prevent that still flame from directly invading upstream side C1, guarantees to eliminate gas and fires and explode.Because this flame arrester 1 has by annular slab 2 and spacer 3 are arranged alternately the drum type main body E that constitutes, and has the plectane 10 of the end of this drum type main body of sealing E; This drum type main body E is fixed on the shell 5 by securing member 4, and plectane 10 strides across the flow direction of fuel gas G in passage T like this, has prevented the direct current of gas.

The spacer 3 that is layered in annular slab 2 is regulated the slit thickness S that combustible gas stream passes through by changing thickness t.Like this, even this fuel gas G catches fire the also generation that can be against any misfortune at downstream C2 (upside among Fig. 1).When fuel gas G was ethene and Air mixing gas, the thickness t of spacer 3 was 0.2mm.When fuel gas G was hydrogen and Air mixing gas, the thickness t of spacer 3 was 0.12mm.

The flame arrester 1 of this embodiment 1 has by annular slab 2 and spacer 3 are stacked alternately the drum type main body E that constitutes, and the plectane 10 that is arranged on this drum type main body E one end.This drum type main body E is fixed on by securing member 4 and is welded on the inward flange 11 that is generally in the columniform shell 5; Securing member 4 is made up of the bolt 12 and the nut 13 of axial setting.By a plurality of double-screw bolts 8 and nut 9, the connecting tube 6,6 ' that the shell 5 with drum type main body E is had

flange

6a, 6a ' clamps and fixing by packing ring 7 or 7 '.Therefore, unclamp this connecting tube 6,6 ' that can be moved away from each other of these bolts 8 and nut 9, turn on this bolt 12 and nut 13 then and can remove disk 10, annular slab 2 and spacer 3 from bolt 12.Can clear up or change these parts easily like this.In addition, ressemble and to be easy to after dismantling this flame arrester 1.

Therefore, the size and dimension of the slit S among the passage T in the flame arrester 1 that does not need to spend a lot of times to adjust transmission fuel gas G.

In the present invention, do not need a lot of time to handle slit S, slit S allows fuel gas to flow through the intrusion that but can stop external flame, thereby prevents firing and exploding of this gas.The friction loss that this flame arrester makes the gas that flows through still less.This drum type main body E is easy to dismounting and can reinstalls definitely.Even this slit gets clogged, also can easily finish removing work.This flame arrester is improved on the accuracy of manufacture, and can use in application and field that needs are easy to make and assemble.

Claims

1. flame arrester, its be placed in the pipeline that fuel gas passes through with stop flame from the downstream of described flame arrester upstream lateral bine prolong, it is characterized in that: described flame arrester has the drum type main body, described drum type main body comprises a plurality of annular slabs; Described annular slab and a plurality of spacer each intervals therebetween stack, so that limit slit between annular slab; And described drum type main body has first end that upstream side is opened and second end that the downstream is sealed, and this slit is open to the downstream simultaneously.

2. flame arrester according to claim 1, it is characterized in that: described flame arrester has in order to hold the shell of described drum type main body, and described flame arrester has a pair of connecting tube, be arranged on the upstream side or the downstream of described shell separately, described shell is clipped in the middle, so that aim at described shell.

3. flame arrester according to claim 1 is characterized in that: for the described slit of the longitudinal axis of described drum type main body to horizontal opening.

4. flame arrester according to claim 1 is characterized in that: described drum type main body has the cover plate in order to second end that seals described drum type main body.

5. flame arrester according to claim 2 is characterized in that: described annular slab and described spacer are detachably connected on the described shell.