CN209187961U - Autonomous extinguishing device - Google Patents

Abstract

The utility model provides a kind of autonomous extinguishing device, the autonomous extinguishing device includes the adhesive phase of thin layer (supporting layer) and the compound substance comprising microcapsules applied on it, the microcapsules have the extinguishing chemical for being exposed to heat affecting, wherein, the outer surface of the described adhesive layer with microcapsules has the fluctuating pattern of protrusion and concave form.The utility model can be used in the case of fire, i.e. the fire extinguishing in the electrical cabinet at initial stage on fire, control panel (console), communication room, cable channel etc..

Description

Autonomous extinguishing device

Technical field

The utility model relates to extinguishing device fields, that is, are related to based on the hot activation extinguishing chemical being embedded in inside microcapsules The autonomous extinguishing device of effect, and at the time of be intended to occur fire, i.e., in the early stage of fire, in electrical cabinet, control plane It stamps out the flames in plate (console), communication room, cable channel etc..

Background technique

From the prior art it is found that the autonomous extinguishing device of the different extinguishing chemicals being enclosed in thermal activation microcapsules is known 's.

Russian utility model patent the 109668th " autonomous extinguishing device " (on October 27th, 2011 is open, Russia Patent gazette the 30th) describe a kind of device containing the above-mentioned microcapsules being immersed in adhesion substance.2 microns to 100 microns Microcapsules be made of polyureas and/or polyurethane and include halogen carbon as extinguishing chemical.The device has two layers: thin layer (wafer) and on it the adhesive phase applied, which, which has, is immersed in microcapsules therein.Microcapsules are 110 DEG C to 165 DEG C rupture.Adhesive is made of different resin and filler.

The disadvantage of this device is that the high temperature of microcapsules explosion is 110 DEG C to 165 DEG C.Therefore, in case of fire, it is necessary to Generating significant temperature makes capsules break in adhesive, and this can damage equipment and will increase attack time.The device pair The cracking of adhesion substance does not have higher tolerance, and does not have compared with high-weatherability and moisture-proof yet.

Immediate similar patent as prototype is Russian Patent No. 2616943 " autonomous extinguishing device " (on April 18th, 2014 is open, Russ P bulletin o.11).The patent includes the description to autonomous extinguishing device, should be certainly Main extinguishing device includes the thin layer that bearing has the polymeric binder layer of the microcapsules containing extinguishing chemical.Each microcapsules are by gathering Close the kernel composition of the gaseous matter that beyond the region of objective existence shell and boiling point are -155 DEG C to+10 DEG C, burning coolant and fire retardant.The device Feature first is that capsules break temperature is low, for 10 DEG C to 20 DEG C and be in another case 60 DEG C to 260 in a kind of situation ℃。

Polymer adhesive can be polyvinyl acetate, polyacrylate, polystyrene, polyester, with aqueous liquid dispersion The form of (aqueous dispersion) uses.The weight ratio of microcapsules and polymer adhesive can 10:1 to 1:4 it Between change.When the ratio of microencapsulation extinguishing chemical and polymer adhesive is more than 10:1, the substance of generation does not have enough Intensity, and when ratio is less than 1:4, which does not have enough extinguishing properties.

For the efficiency of additional mechanical enhancer and the autonomous extinguishing device for improving the prior art, autonomous extinguishing device can be with Further comprise the thin layer (supporting layer) with a thickness of 0.05mm to 2mm, applies adhesion substance on this thin layer.The thin layer can be Optical fiber, polypropylene fibre, silica.

The shortcomings that prototype, is as follows:

Polymeric binder layer thickness is quite big, it is difficult to discharge extinguishing chemical and increase attack time, fire extinguishing is caused to be imitated Rate is low；

Polymer adhesive and microencapsulation extinguishing chemical are water-dispersible form, which has limited the range of adhesive, need using Thickener, preservative, disinfectant, and increase the drying time of off-the-shelf.The thermal decomposition of adhesive used in prototype produces Object is polyvinyl acetate, polyacrylate, polystyrene, polyester, they are toxic and dangerous to human body；

The flexibility of prototype is low with elasticity, does not allow to use on complicated surface, such as passes through winding cable, electric wire etc..

Summary of the invention

The purpose of this utility model is to promote extinguishing chemical from being included in those positions under the optimum temperature by fire in the early stage Emit in the microcapsules of adhesion substance internal layer and discharges extinguishing chemical to the maximum extent to improve fire-fighting efficiency.

Another purpose is to increase the flexibility and elasticity of the adhesive containing the microcapsules with extinguishing chemical using extinguishing chemical, It is mounted on complex surface with allowing to apply.

Adhesive phase of these purposes by manufacture comprising thin layer (supporting layer) and the application including microcapsules independently goes out Fiery device realizes that the microcapsules have the extinguishing chemical for being exposed to heat affecting (thermal influence), wherein having micro- The outer surface of the adhesive phase of capsule has the fluctuating pattern of protrusion and concave form.

This considerably increases hot activation area and increase the efficiency of microcapsules rupture, including those depth be immersed in it is viscous Microcapsules in mixture layer, because microcapsules are heated simultaneously on the surface of adhesive phase, and go back while emitting gas, This is different from prototype, and the microcapsules in prototype are different from the surface distance of adhesive phase and do not spray fire-retardant gas simultaneously, But the injection one by one that time interval is relatively long.

It provides in an advantageous manner, the protrusion and recess is evenly distributed on the outer surface of adhesive phase.By This, the extinguishing chemical sprayed from microcapsules is evenly distributed in fire extinguishing region.

By it is other it is advantageous in a manner of provide, the bonded composite matter containing microcapsules is the phase with less than 150% To the bi-component organo-silicon compound (organosilicon) of the cold curing of elongation at break.This low elongation is also contributed to from the bonding In all microcapsules in agent simultaneously spray fire extinguishing agent.

In addition, the compound belongs to the organosilicon of polysiloxane group, and after polymerisation the flexibility with height and Elasticity allows to be applied on the surface of complicated (difficulty) to prevent, for example, the cable of winding, electric wire and other items are from fire Calamity.

It is provided in such a way that one more favorable, thin layer (supporting layer) is made of aluminium foil, promotes microcapsules when rupture Required temperature quickly and is uniformly distributed in the whole region of device.Aluminum foil thickness is preferably at 25 microns to 150 microns In the range of.

In order to device is fixed on need to prevent fires or the wall and other elements of the confined space of quick extinguishing on, preferably aluminium The one side of the not adhesive phase of foil is coated with one layer of Heat-Resisting Adhesive substance.

Detailed description of the invention

Exemplary embodiment shown in reference to the accompanying drawings carries out the exemplary embodiment of the utility model more detailed Explanation, in which:

Fig. 1 shows the side view of the autonomous extinguishing device with longitudinal cross-section；And

Fig. 2 shows the morphologies of adhesive to the influence chart of extinguishing chemical injection and rate of putting out a fire.

Specific embodiment

Fig. 1 is the side view of the autonomous extinguishing device with the longitudinal cross-section for showing its structure.The device is included in compound The thin layer 1 coated on the side of the adhesive phase 2 of substance, the compound substance include multiple microcapsules 3 filled with extinguishing chemical, example Such as, the known extinguishing fluid from a variety of ozone safety.In order to be fixed on item to be protected, the other side of thin layer 1, which has, to be covered It is stamped the gluing oxidant layer 4 of protective film 5.The outer surface of adhesive phase 2 with microcapsules 3 has of protrusion 6 and 7 forms that are recessed Lie prostrate pattern.

Thin layer 1 with a thickness of 25 microns to 150 microns of aluminium foil by being made.It promotes micro-capsule to swash in the whole region of device It required temperature living quick and is uniformly distributed.When aluminium foil is placed on the optimum position of item to be protected by you, aluminium foil can also be with Keep given form.

The bonded composite matter of adhesive phase 2 is double groups of the cold curing with the opposite elongation at break less than 150% Divide silicone compounds (silicone).The compound belongs to the organosilicon of polysiloxane group, and has the property that after polymerizeing

The flexibility and elasticity of height, are allowed to be applied to and are such as wound with protection on the surface of complicated (difficulty) Cable, electric wire and other items are from fire.

The coefficient of opposite elongation at break less than 150%, this allows microcapsules rupture with from all layers of adhesive phase Face sprays the maximum amount of extinguishing chemical and reduces the time of fire extinguishing, what research institute as shown in Table proved, wherein m is injection Extinguishing chemical volume, unit be gram and t be extinguishing chemical injection and fire extinguishing time, unit is the second.

The bonded composite matter can keep its performance in the wide temperature range from -60 DEG C to+250 DEG C and protect Influence of the microcapsules from unfavorable conditions (high humility).

Component of the bonded composite matter comprising following ratio, wt.%:

Microcapsules with extinguishing chemical: 40 to 60；

Silicone compound: remaining.

Increase the hot activation of device significantly in 6 form of protrusion or with the convex block of the dispersion of wave pattern or aturegularaintervals Space and the destruction efficiency for improving microcapsules (those of within the adhesive layer including depth submergence).

Microcapsules 3 are the spherical polymer shells having a size of 50 microns to 400 microns, by can be in 90 DEG C of rupture temperature The cured space crosslinked polymeric materials explosively decomposed under degree are made.Russian Patent No. 2469761 or This microcapsules are described in EP3228366.

In Initial Stage of Fire, the chief component of heat exchange be caused convective heat exchange is flowed up by hot gas, so Compared with the layer with flat surfaces, when heated, the heat shock of the bonded composite matter laminate in the form of protrusion 6 and recess 7 (heating) region surface living increases the volume of the extinguishing chemical once sprayed.

When device to test result (seeing the above table) confirms the geometry of uneven surface topography to microcapsules " explosion " The influence of the rate and integrality of extinguishing chemical injection, that is, the increase on the hot activation area surface due to caused by uneven surface is shortened Time for putting out a fire in the case where not increasing plant bulk.The result provided in table is intuitively shown in Fig. 2.With bonding The sample (curve I) on injustice (fluctuating) surface of the outer surface of oxidant layer is than having the heating of the sample (curve II) of flat surface more Fastly, and it is characterized in that, extinguishing chemical sprays faster and attack time is shorter.

Described utility model can be used in the case of fire, i.e., in the electrical cabinet at initial stage on fire, control panel (control Platform), communication room, the fire extinguishing in cable channel etc..

The equipment is easy to manufacture using the standard device of automatic production line at industrial scale.

The information source used:

1, Russian Patent No. 2616943

2, Russian Patent No. 109,668 U1

3, Russian Patent No. 2 469761

4, EP the 3228366th

5、WO 2012/177181

Claims (6)

1. a kind of autonomous extinguishing device, the autonomous extinguishing device includes supporting layer and the answering comprising microcapsules applied on it The adhesive phase of substance is closed, the microcapsules have the extinguishing chemical for being exposed to heat affecting, which is characterized in that the institute with microcapsules The outer surface for stating adhesive phase has the fluctuating pattern of protrusion and concave form.

2. autonomous extinguishing device as described in claim 1, which is characterized in that the protrusion and recess are evenly distributed on described glue On the outer surface of mixture layer.

3. the autonomous extinguishing device as described in any one of preceding claims 1 to 2, which is characterized in that the supporting layer is by aluminium Foil is made.

4. autonomous extinguishing device as claimed in claim 3, which is characterized in that the thickness of the aluminium foil is micro- at 25 microns to 150 In the range of rice.

5. autonomous extinguishing device as claimed in claim 3, which is characterized in that one without described adhesive layer of the aluminium foil Side is coated with one layer of Heat-Resisting Adhesive substance.

6. autonomous extinguishing device as claimed in claim 4, which is characterized in that one without described adhesive layer of the aluminium foil Side is coated with one layer of Heat-Resisting Adhesive substance.