A kind of electric wire fire prevention sheath
Technical field
The present invention relates to electric wire field, particularly relate to a kind of electric wire fire prevention sheath.
Background technology
Along with the development of society, the progress of science and technology, numerous power plant, smelter, oil play etc. are to large-scale grouping of the world economy
Direction is developed, and skyscraper, place of public amusement, subway and underground street etc. continue to bring out, and its power consumption grows with each passing day, electric wire
Kind and the consumption of cable increase the most accordingly.Electric wire gets final product transmission & distribution electric energy, transmission information, but it causes fire simultaneously
Blasting fuse.The most common cable, cannot be energized once be burned when actually occurring fire, but many important events occur
During fire, evacuating personnel, the illumination of passage, fire protection alarm device, automatic fire-fighting facility and other emergency sets are desirable that cable
Can normal power-up at the appointed time when fire occurs.Therefore fireproof cable i.e. arises at the historic moment, and fireproof cable refers in regulation
Condition and in the time, cable is burned in flame, still can keep properly functioning electric wire.The most a lot of fire prevention
Cable use on cable conductor wrapped come goods mica tape structure, but this type of method can not ensure cable effectively, reliably
In the case of catching fire properly functioning.
Therefore, people have developed again various fireproof electric wire and cable, but this type of cable effect its cost pole general
Height, hinders the development of fireproof cable greatly.
Summary of the invention
Present invention aim to address the deficiencies in the prior art, it is provided that a kind of electric wire fireproof, thus effectively
Protection electric wire work in the case of catching fire, reduce production cost simultaneously, be more beneficial for electric wire is just changed
Make, thus effectively promote.
The technical solution used in the present invention is: a kind of electric wire fire prevention sheath, by outer and interior include successively protective layer,
Mixed layer and thermal insulation layer, ringwise, sheath is provided with breach convenient to operate in the longitudinal section of sheath;Alternately set in described mixed layer
There are polyolefin flame-retardant pipe and fire proofing to fill pipe, in described mixed layer, are also filled with expanded graphite and APP combustion adjuvant;Described resistance
Combustible material is filled in pipe and is filled with powdered object, and described powdered object includes following component and weight portion content: sodium silicate
Powder 20~35, calcium hydroxide 5~8, magnesium hydroxide 6~8, ceramics 4~8, glass dust 4~6, bentonite 4~8,
SiO 2 powder 10~15, tricresyl phosphate ether phenyl ester powder 10~50;Described thermal insulation layer it include following component and weight
Part content: glass fibre 30~40, brucite 40~60, composite resin 5~10, binding agent 4~6, hydrophober 0~1.
As a further improvement on the present invention, described protective layer is by Ceramic silicon rubber and TiO2Collectively form.
As the further improvement of the present invention, the breach on described sheath is π/18~π/9 radian.
The present invention uses and provides the benefit that: use the electric wire fire prevention sheath of this structure, can be directly by sheath
Be enclosed within the outside of electric wire, when run into catch fire condition time, sheath start expand thus by whole electric wire parcel protection, protect
Thermal insulation layer and the mixed layer of set play fire-retardant effect.The present invention can directly original cable key position install originally protect
Overlap, there is the most heat insulation and fire-retardant effect simultaneously.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is top view of the present invention.
Shown in figure: 1 protective layer, 2 thermal insulation layers, 3 mixed layers, 4 polyolefin flame-retardant pipes, 5 fire proofings fill pipe.
Detailed description of the invention
Below in conjunction with Fig. 1 and Fig. 2, the present invention is described further.
As it can be seen, a kind of electric wire fire prevention sheath, outer and interior include protective layer 1, mixed layer 3 and heat insulation successively
Layer 2, ringwise, sheath is provided with breach convenient to operate in the longitudinal section of sheath;Polyolefin resistance alternately it is provided with in described mixed layer 3
Combustion pipe 4 and fire proofing fill pipe 5, are also filled with expanded graphite and APP combustion adjuvant in described mixed layer 3;Described fire proofing
Filling in pipe 5 and be filled with powdered object, described powdered object includes following component and weight portion content: sodium silicate powder
20~35, calcium hydroxide 5~8, magnesium hydroxide 6~8, ceramics 4~8, glass dust 4~6, bentonite 4~8, titanium dioxide
Si powder 10~15, tricresyl phosphate ether phenyl ester powder 10~50;Described thermal insulation layer 2 it include that following component and weight portion contain
Amount: glass fibre 30~40, brucite 40~60, composite resin 5~10, binding agent 4~6, hydrophober 0~1.
Electric wire is placed wherein by indentation, there by the sheath of the present invention, thus electric wire is protected.When
Running into when catching fire state, sheath starts to expand thus by the parcel protection of whole electric wire, thermal insulation layer and the mixed layer of sheath rise
To fire-retardant effect.
The present invention, for the electric wire best results of exposed bad transformation, can be directly acted on by the present invention
The electric wire exposed, without carrying out overhauling the work such as transformation, it is simple to promote and use.The present invention has convenient operation,
Easy to use, the feature of good flame retardation effect.
In order to preferably illustrate the present invention, elite take some embodiments and be further described.
Embodiment 1, a kind of electric wire fire prevention sheath, outer and interior include protective layer 1, mixed layer 3 and heat insulation successively
Layer 2, ringwise, sheath is provided with breach convenient to operate in the longitudinal section of sheath;Polyolefin resistance alternately it is provided with in described mixed layer 3
Combustion pipe 4 and fire proofing fill pipe 5, are also filled with expanded graphite and APP combustion adjuvant in described mixed layer 3;Described fire proofing
Filling in pipe 5 and be filled with powdered object, described powdered object includes following component and weight portion content: sodium silicate powder
35, calcium hydroxide 8, magnesium hydroxide 8, ceramics 8, glass dust 6, bentonite 8, SiO 2 powder 15, tricresyl phosphate ether benzene
Ester powder 12;Described thermal insulation layer 2 it include following component and weight portion content: glass fibre 30, brucite 60, compound tree
Fat 5, binding agent 4;Protective layer is by Ceramic silicon rubber and TiO2Collectively forming, the breach on sheath is π/18 radian.
Embodiment 2, a kind of electric wire fire prevention sheath, outer and interior include protective layer 1, mixed layer 3 and heat insulation successively
Layer 2, ringwise, sheath is provided with breach convenient to operate in the longitudinal section of sheath;Polyolefin resistance alternately it is provided with in described mixed layer 3
Combustion pipe 4 and fire proofing fill pipe 5, are also filled with expanded graphite and APP combustion adjuvant in described mixed layer 3;Described fire proofing
Filling in pipe 5 and be filled with powdered object, described powdered object includes following component and weight portion content: sodium silicate powder
20, calcium hydroxide 5, magnesium hydroxide 6, ceramics 4, glass dust 4, bentonite 4, SiO 2 powder 10, tricresyl phosphate ether benzene
Ester powder 47;Described thermal insulation layer 2 it include following component and weight portion content: glass fibre 40, brucite 40, compound tree
Fat 10, binding agent 6, hydrophober 1;Protective layer is by Ceramic silicon rubber and TiO2Collectively forming, the breach on sheath is π/9
Radian.
Embodiment 3, a kind of electric wire fire prevention sheath, outer and interior include protective layer 1, mixed layer 3 and heat insulation successively
Layer 2, ringwise, sheath is provided with breach convenient to operate in the longitudinal section of sheath;Polyolefin resistance alternately it is provided with in described mixed layer 3
Combustion pipe 4 and fire proofing fill pipe 5, are also filled with expanded graphite and APP combustion adjuvant in described mixed layer 3;Described fire proofing
Filling in pipe 5 and be filled with powdered object, described powdered object includes following component and weight portion content: sodium silicate powder
30, calcium hydroxide 7, magnesium hydroxide 7, ceramics 6, glass dust 5, bentonite 6, SiO 2 powder 13, tricresyl phosphate ether benzene
Ester powder 26;Described thermal insulation layer 2 it include following component and weight portion content: glass fibre 35, brucite 52, compound tree
Fat 7, binding agent 5, hydrophober 1;Protective layer is by Ceramic silicon rubber and TiO2Collectively forming, the breach on sheath is π/12
Radian.
Use the electric wire fire prevention sheath of this structure, directly sheath can be enclosed within the outside of electric wire, work as chance
To catch fire condition time, sheath start expand thus by whole electric wire parcel protection, thermal insulation layer and the mixed layer of sheath play
Fire-retardant effect.The present invention directly key position at original cable can install this sheath, has well simultaneously
Heat insulation and fire-retardant effect.
Those skilled in the art are it is to be understood that the protection scheme of the present invention is not limited only to the above embodiments, it is also possible to
Various permutation and combination and conversion is carried out, on the premise of spirit of the present invention, to the present invention on the basis of above-described embodiment
The various conversion carried out all fall within protection scope of the present invention.