CN205028676U - Branch cable in advance prevents fires - Google Patents
Branch cable in advance prevents fires Download PDFInfo
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- CN205028676U CN205028676U CN201520756328.6U CN201520756328U CN205028676U CN 205028676 U CN205028676 U CN 205028676U CN 201520756328 U CN201520756328 U CN 201520756328U CN 205028676 U CN205028676 U CN 205028676U
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Abstract
The utility model discloses a branch cable in advance prevents fires belongs to cable technical field, including sinle silk and inner sheath, its characterized in that: still include branch line and joint cover, the sinle silk includes the synthetic mica area of conductor and parcel conductor, the joint is sheathe in to open has first joint hole and the second joint hole of lining up, the branch line joint is on first joint hole, the sinle silk joint is on second joint hole, sinle silk, branch line and joint cover are wrapped up by the inner sheath, the outer parcel of inner sheath has the aramid fiber silk to weave the stratum reticulare, the aramid fiber silk is woven the stratum reticulare outsourcing and has been wrapped up in the fire -retardant layer of glass silk, the outer parcel in the fire -retardant layer of glass silk has the oversheath. The utility model discloses adopt the aramid fiber silk to weave stratum reticulare and the fire -retardant layer of glass silk in the cable, improved the overall structure intensity of cable, have good fire resistance, and tensile ability reinforce, effect of anti - shock is good.
Description
Technical field
The utility model relates to field of cable technology, particularly relates to the good and fire prevention pre-branched cable that tensile strength is high of a kind of fire line.
Background technology
Cable of a great variety, according to different purposes and job requirement, all has special stuctures and properties.Cable is mainly divided into power cable, control cables, compensating cable, shielded type cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resisting cable, shipboard cable, aluminium alloy cable etc.
Wherein, especially comparatively common with power cable.Power cable be mainly used in send out, join, defeated, become, forceful electric power delivery of electrical energy in supply line, the electric current passed through is large, voltage is high.Processing technology is also comparatively simple, from conductor processing, adds that insulation, shielding, stranding, sheath are made layer by layer by the periphery at conductor.The structure of power cable is more complicated, and the level of superposition is more.
In recent years, cable technology is progress constantly, has occurred pre-branched cable.Pre-branched cable is factory's cable by user's design drawing prefabricated branch line when producing main cable.Because branch line cross-sectional sizes and branch line length etc. determine according to designing requirement, branch line can be manufactured on main cable by factory in advance, shorten construction period greatly, significantly reduce Master Cost and operating expenses, ensure that the reliability of distribution larger, there is power supply reliable, good waterproof performance, account for construction area little, failure rate is low, the advantages such as low price, and lay simple, it is convenient to install, environment for use requires low, can directly be laid in cable trough, in the cable shaft of building, also can be laid in different cable testing bridges, installation accuracy requires low.Therefore, pre-branched cable is widely used in vertical supply in upper mesophere building, residential building, mall, hotel, hospital's electric shaft, is also applicable to the electric power systems such as tunnel, airport, bridge, highway.
Publication number is CN204288853U, publication date is that the Chinese patent literature of on 04 22nd, 2015 discloses a kind of fire resistant flexible pre-branched cable, comprise many single-core cables, it is characterized in that, every root single-core cable comprises branch cable and conductor master core, described branch cable and conductor master core are fixed by C type compressing piece, described C type compressing piece outer cladding wrapping insulation layer, described many single-core cables outer coated glass fiber tape, the first mica tape, the first hot melt adhesive layer, the first tetrafluoroethene band and branch's adapter sleeve successively.
Fire resistant flexible pre-branched cable disclosed in this patent documentation, branch cable and conductor master core are fixed by C type compressing piece, because branch cable and conductor master core are all circular cross-sections, easily produce slip each other, C type compressing piece fixed effect is bad, branch cable and conductor master core is difficult to firmly to link together, and whole pre-branched cable tension weak effect, structural strength is low.
Utility model content
For solving the problems of the technologies described above, the utility model proposes a kind of fire prevention pre-branched cable, in the utility model cable, adopting aramid fiber yarn woven mesh layer and glass fiber flame-retardant layer, improve the overall construction intensity of cable, there is good anti-flammability, and resistance to tension is strong, good impact resistant effect.
The technical solution adopted in the utility model is:
A kind of fire prevention pre-branched cable, comprise core and inner sheath, it is characterized in that: also comprise branch line and clamping cover, described core comprises the synthetic mica tape of conductor and parcel conductor, described clamping puts and has the first through blocked hole and the second blocked hole, described branch line is connected on the first blocked hole, described core is connected on the second blocked hole, described core, branch line and clamping cover are wrapped up by inner sheath, described inner sheath is wrapped with aramid fiber yarn woven mesh layer, described aramid fiber yarn woven mesh layer is wrapped with glass fiber flame-retardant layer, described glass fiber flame-retardant layer is wrapped with oversheath.
Described clamping puts and is coated with mica belt, and mica belt is coated with silicone protective layer.
Described core is single or many.
The arrangement mode of described many cores is single or multiple lift concentric stranding.
Gap between described clamping cover is filled with alkali-free glass fibre rope packed layer.
Described inner sheath is ceramic polyolefin flame-retardant inner sheath.
Described oversheath is flame-retardant low-smoke halogen-free outer protective polyethylene cover.
Ceramic polyolefin described in the utility model, does not absorb water, nonhygroscopic, and electric insulating quality is good, and fire-resistant water isolating is excellent.This material at normal temperatures dielectric strength reaches 22-25Kv/mm, and specific insulation reaches 2*10
14Ω .m.Can sinter adamantine ceramic-like supporter into when 300-2000 DEG C of burning, temperature is higher, and ceramic-like armour body is harder, has the fire-resistant effect of good fire insulation.
The beneficial effects of the utility model are mainly manifested in the following aspects:
One, the utility model, core comprises the synthetic mica tape of conductor and parcel conductor, clamping puts and has the first through blocked hole and the second blocked hole, branch line is connected on the first blocked hole, stating core is connected on the second blocked hole, adopt the clamping cover of this ad hoc structure, can by branch line and firm the linking together of core, core, branch line and clamping cover are wrapped up by inner sheath, there is good protective effect, inner sheath is wrapped with aramid fiber yarn woven mesh layer, substantially increase the tensile property of whole cable, aramid fiber yarn woven mesh layer is wrapped with glass fiber flame-retardant layer, glass fiber does not produce electrostatic, and it is high temperature resistant, good flame retardation effect, 3 D stereo network structure can be formed, improve toughness and the anti-tensile of whole cable, there is higher impact strength, the pre-branched cable integrally formed, structural strength is high, has good anti-flammability, and resistance to tension is strong, good impact resistant effect.
Two, the utility model, clamping puts and is coated with mica belt, has excellent resistance to elevated temperatures and flame resistance energy; to clamping cover, there is good protective effect; mica belt is coated with silicone protective layer, and improve the pliability of clamping cover, protected effect is better.
Three, the utility model, core is single or many, can be made into single-core cable, three-core cable etc. according to different demand, manufactures simple.
Four, the utility model, the arrangement mode of many cores is single or multiple lift concentric stranding, and adopt this specific arrangement mode, enhance the overall construction intensity of cable greatly, the resistance to tension of cable is better.
Five, the utility model, the gap between clamping cover is filled with alkali-free glass fibre rope packed layer, and alkali-free glass fibre rope has higher thermal endurance and insulating properties, and has higher tensile strength, makes Integral cable have better thermal endurance and tensile strength.
Six, the utility model, inner sheath is ceramic polyolefin flame-retardant inner sheath, further increases fireproofing of cable fire resistance.
Seven, the utility model, oversheath is flame-retardant low-smoke halogen-free outer protective polyethylene cover, has low cigarette, fire-retardant, low-corrosiveness, hypotoxic feature, meets the requirement of the low cigarette environmental protection of fireproof cable.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is the cross-sectional view of the utility model embodiment 2;
Fig. 3 is the cross-sectional view of the utility model embodiment 5;
Mark in figure: 1, inner sheath, 2, branch line, 3, clamping cover; 4, conductor; 5, synthetic mica tape, the 6, first blocked hole, the 7, second blocked hole; 8, aramid fiber yarn woven mesh layer; 9, glass fiber flame-retardant layer, 10, oversheath, 11, mica belt; 12, silicone protective layer, 13, alkali-free glass fibre rope packed layer.
Embodiment
Embodiment 1
See Fig. 1, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
The present embodiment is the most basic execution mode, core comprises the synthetic mica tape of conductor and parcel conductor, there is good insulating properties, clamping puts and has the first through blocked hole and the second blocked hole, branch line is connected on the first blocked hole, stating core is connected on the second blocked hole, adopt the clamping cover of this ad hoc structure, can by branch line and firm the linking together of core, core, branch line and clamping cover are wrapped up by inner sheath, there is good protective effect, inner sheath is wrapped with aramid fiber yarn woven mesh layer, substantially increase the tensile property of whole cable, aramid fiber yarn woven mesh layer is wrapped with glass fiber flame-retardant layer, glass fiber does not produce electrostatic, and it is high temperature resistant, good flame retardation effect, 3 D stereo network structure can be formed, improve toughness and the anti-tensile of whole cable, there is higher impact strength, the pre-branched cable integrally formed, structural strength is high, has good anti-flammability, and resistance to tension is strong, good impact resistant effect.
Embodiment 2
See Fig. 2, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
The present embodiment is a better embodiment, and clamping puts and is coated with mica belt, has excellent resistance to elevated temperatures and flame resistance energy; to clamping cover, there is good protective effect; mica belt is coated with silicone protective layer, and improve the pliability of clamping cover, protected effect is better.
Embodiment 3
See Fig. 2, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
Described core is single or many.
The present embodiment is a better embodiment, and core is single or many, can be made into single-core cable, three-core cable etc. according to different demand, manufactures simple.
Embodiment 4
See Fig. 2, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
Described core is single or many.
The arrangement mode of described many cores is single or multiple lift concentric stranding.
The present embodiment is a better embodiment, and the arrangement mode of many cores is single or multiple lift concentric stranding, and adopt this specific arrangement mode, enhance the overall construction intensity of cable greatly, the resistance to tension of cable is better.
Embodiment 5
See Fig. 3, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
Described core is single or many.
The arrangement mode of described many cores is single or multiple lift concentric stranding.
Gap between described clamping cover 3 is filled with alkali-free glass fibre rope packed layer 13.
The present embodiment is a better embodiment, gap between clamping cover is filled with alkali-free glass fibre rope packed layer, alkali-free glass fibre rope has higher thermal endurance and insulating properties, and has higher tensile strength, makes Integral cable have better thermal endurance and tensile strength.
Embodiment 6
See Fig. 3, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
Described core is single or many.
The arrangement mode of described many cores is single or multiple lift concentric stranding.
Gap between described clamping cover 3 is filled with alkali-free glass fibre rope packed layer 13.
Described inner sheath 1 is ceramic polyolefin flame-retardant inner sheath.
The present embodiment is a better embodiment, and inner sheath is ceramic polyolefin flame-retardant inner sheath, further increases fireproofing of cable fire resistance.
Embodiment 7
See Fig. 3, a kind of fire prevention pre-branched cable, comprise core and inner sheath 1, also comprise branch line 2 and clamping cover 3, described core comprises the synthetic mica tape 5 of conductor 4 and parcel conductor 4, described clamping cover 3 has the first through blocked hole 6 and the second blocked hole 7, described branch line 2 is connected on the first blocked hole 6, described core is connected on the second blocked hole 7, described core, branch line 2 and clamping cover 3 are wrapped up by inner sheath 1, described inner sheath 1 is wrapped with aramid fiber yarn woven mesh layer 8, described aramid fiber yarn woven mesh layer 8 is wrapped with glass fiber flame-retardant layer 9, described glass fiber flame-retardant layer 9 is wrapped with oversheath 10.
Described clamping cover 3 is coated with mica belt 11, and mica belt 11 is coated with silicone protective layer 12.
Described core is single or many.
The arrangement mode of described many cores is single or multiple lift concentric stranding.
Gap between described clamping cover 3 is filled with alkali-free glass fibre rope packed layer 13.
Described inner sheath 1 is ceramic polyolefin flame-retardant inner sheath.
Described oversheath 10 is flame-retardant low-smoke halogen-free outer protective polyethylene cover.
The present embodiment is preferred forms, core comprises the synthetic mica tape of conductor and parcel conductor, there is good insulating properties, clamping puts and has the first through blocked hole and the second blocked hole, branch line is connected on the first blocked hole, stating core is connected on the second blocked hole, adopt the clamping cover of this ad hoc structure, can by branch line and firm the linking together of core, core, branch line and clamping cover are wrapped up by inner sheath, there is good protective effect, inner sheath is wrapped with aramid fiber yarn woven mesh layer, substantially increase the tensile property of whole cable, aramid fiber yarn woven mesh layer is wrapped with glass fiber flame-retardant layer, glass fiber does not produce electrostatic, and it is high temperature resistant, good flame retardation effect, 3 D stereo network structure can be formed, improve toughness and the anti-tensile of whole cable, there is higher impact strength, the pre-branched cable integrally formed, structural strength is high, has good anti-flammability, and resistance to tension is strong, good impact resistant effect.Oversheath is flame-retardant low-smoke halogen-free outer protective polyethylene cover, has low cigarette, fire-retardant, low-corrosiveness, hypotoxic feature, meets the requirement of the low cigarette environmental protection of fireproof cable.
Claims (7)
1. a fire prevention pre-branched cable, comprise core and inner sheath (1), it is characterized in that: also comprise branch line (2) and clamping cover (3), described core comprises the synthetic mica tape (5) of conductor (4) and parcel conductor (4), described clamping cover (3) has through the first blocked hole (6) and the second blocked hole (7), described branch line (2) is connected on the first blocked hole (6), described core is connected on the second blocked hole (7), described core, branch line (2) and clamping cover (3) are wrapped up by inner sheath (1), described inner sheath (1) is wrapped with aramid fiber yarn woven mesh layer (8), described aramid fiber yarn woven mesh layer (8) is wrapped with glass fiber flame-retardant layer (9), described glass fiber flame-retardant layer (9) is wrapped with oversheath (10).
2. a kind of fire prevention pre-branched cable according to claim 1, is characterized in that: described clamping cover (3) is coated with mica belt (11), and mica belt (11) is coated with silicone protective layer (12).
3. a kind of fire prevention pre-branched cable according to claim 2, is characterized in that: described core is single or many.
4. a kind of fire prevention pre-branched cable according to claim 3, is characterized in that: the arrangement mode of described many cores is single or multiple lift concentric stranding.
5. a kind of fire prevention pre-branched cable according to claim 4, is characterized in that: the gap between described clamping cover (3) is filled with alkali-free glass fibre rope packed layer (13).
6. a kind of fire prevention pre-branched cable according to claim 5, is characterized in that: described inner sheath (1) is ceramic polyolefin flame-retardant inner sheath.
7. a kind of fire prevention pre-branched cable according to claim 6, is characterized in that: described oversheath (10) is flame-retardant low-smoke halogen-free outer protective polyethylene cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756328.6U CN205028676U (en) | 2015-09-28 | 2015-09-28 | Branch cable in advance prevents fires |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756328.6U CN205028676U (en) | 2015-09-28 | 2015-09-28 | Branch cable in advance prevents fires |
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| CN205028676U true CN205028676U (en) | 2016-02-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331447A (en) * | 2016-04-26 | 2017-11-07 | 石策略 | A kind of pre-branched cable |
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2015
- 2015-09-28 CN CN201520756328.6U patent/CN205028676U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331447A (en) * | 2016-04-26 | 2017-11-07 | 石策略 | A kind of pre-branched cable |
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