CN208489013U - Flexible cable is used in a kind of connection of copper core polyvinyl chloride insulation flame-retardant strand type - Google Patents

Abstract

The utility model discloses a kind of copper core polyvinyl chloride insulation flame-retardant strand type connection flexible cables, including copper core, polyvinyl chloride insulation layer is extruded outside copper core constitutes insulated wire cores, two insulated wire cores refill heat conductive silica gel fill-in pad and constitute cable core after being twisted in parallel to column, the wrapped flame-resistant insulation adhesive tape with a thickness of 0.08mm-0.10mm outside cable core, porcelain type fire retardant polyolefin sheath is extruded into outside flame-resistant insulation adhesive tape, psp steel band is being externally provided at porcelain type fire retardant polyolefin sheath, the internal pvc oversheath for being equipped with a pair of symmetrical phosphating steel wire is externally provided in psp steel band, glass fibre composite fire-proof layer is externally provided in pvc oversheath.The utility model has the features such as heatproof is high, and non-ignitable, anti-corruption is heat-insulated, and tensile strength is high, and electrical insulating property is good, and can recycle, environmental protection.

Description

Flexible cable is used in a kind of connection of copper core polyvinyl chloride insulation flame-retardant strand type

Technical field

The utility model belongs to wire and cable field, in particular to a kind of copper core polyvinyl chloride insulation flame-retardant strand type connects It connects and uses flexible cable.

Background technique

The development process of China's fire-resisting cable is rather tortuous, just there is arguement since noun, design and relief department by this Class product is named as " fireproof cable ", and manufacturing sector is then named as " fire-resisting cable ", and the complete term of IEC standard should be " in fire Burn under the conditions of flame and require keep route integrality cable ", such noun is too long, over time " fire-resisting cable " at Term accustomed to using, but " fire resisting " and " fire prevention " battle is unfinished so far, regardless of word, when about flame regulation, burning Between and route is completely equal requires, be only the substantive issue of fire-resisting cable, the simulation test of limitation only relatively, really occurs Any cable can guarantee safe operation when fire, need with more realistic test method, Shanghai Electrical Cable Research Institute in Start within 1969 to develop for nuclear reactor inorganic insulation signal detection cable (belonging to instrument cable), manufactures experimently aluminium oxide and oxygen Change magnesium insulation high-temperature-resistant alloy conductor and jacketed cable, certain performance aluminium oxide more preferably compared with magnesia, but for matching electrical wiring It says, magnesium oxide insulated is had a surplus enough；The eighties in last century, Shanghai Electrical Cable Research Institute are successfully manufactured experimently and produce magnesium oxide insulated Cable, for shine China-Pilkington glass factory coordinative composition of equipments, so that domestic magnesia cable opens market at home, due to copper Valence problem affects being widely used for magnesia cable, and Mica tape adds plastic insulation fire-resisting cable to emerge rapidly, really right The impact of magnesia cable is very big, in addition commercial speculation heats up, mica tape insulated flame-resistant cable is voguish in the industry, as long as having Examining report, it appears that this cable is just able to maintain route integrality when fire occurs, and does not deny high-quality mica tape insulation here Fire-resisting cable can maintain a period of time in fire, but can maintain on earth how long, be difficult have digital concept expression, besides each factory Product is very different, encounters that the thought that the product of inferior quality is then entertained imaginary or groundless fears is also reasonable, and the fire damage in the big or middle city in China has been drawn It plays government to pay attention to, researches and develops a kind of cable with good fire resistance property and become those skilled in the art's technology urgently to be resolved and ask Topic.

Utility model content

The purpose of the utility model is to provide a kind of copper core polyvinyl chloride insulation flame-retardant strand type connection flexible cables.

A kind of connection of copper core polyvinyl chloride insulation flame-retardant strand type flexible cable, including copper described in the utility model Core extrudes polyvinyl chloride insulation layer outside copper core and constitutes insulated wire cores, and two insulated wire cores are refilled after being twisted in parallel to column and led Hot silicone filler pad constitutes cable core, the wrapped flame-resistant insulation adhesive tape with a thickness of 0.08mm-0.10mm outside cable core, in flame-resistant insulation Porcelain type fire retardant polyolefin sheath is extruded into outside adhesive tape, psp steel band is being externally provided at porcelain type fire retardant polyolefin sheath, in psp Steel band is externally provided with the internal pvc oversheath for being equipped with a pair of symmetrical phosphating steel wire, and it is multiple to be externally provided with glass fibre in pvc oversheath Close fireprotection layer.

It is further improved, the flame-resistant insulation adhesive tape includes top layer, middle layer and lowest level, and the top layer is poly- Imide membrane, with a thickness of 0.03mm-0.04mm, the middle layer is plastic basis material, and the lowest level is Kapton, With a thickness of 0.02mm-0.04mm, the plastic basis material is bonded with two layers of polyimide film by adhesive.

It is further improved, the glass fibre composite fire-proof layer by triplex glass fiber mat and is compound between mat Two layers of cured phenolic coating composition.

The utility model has the beneficial effects that:

1, insulated wire cores use the 6th kind of soft copper stranded conductor and polyvinyl chloride (PVC) plastic insulation, cable can be made to have good Good flexible nature；

2, heat conductive silica gel fill-in pad is filled, so that cable has flexibility, excellent insulating properties, compressibility, can be filled Gap, while the effects of also act as insulation, damping, flat cable itself will easily be compressed deformation, play protection, anti-extrusion Effect；

3, it is equipped with into porcelain type fire retardant polyolefin sheath, can crust in flame low temperature (400 DEG C or so) at porcelain, formed steady Fixed entirety blocks oxygen to inside and outside realization；This product can be by A class fire retardancy test, and flame retardant effect is excellent, yield rate Height requires the higher occasion of fire-retardant condition especially suitable for skyscraper, oil field, power station, power plant, mine, chemical industry, subway etc., It is provided simultaneously with stronger mechanical performance, such as shock resistance, strong environmental adaptability, this product is green, and security performance is superior；

4, the utility model is using flame-resistant insulation adhesive tape with structure is simple, electrical insulation properties are good, flame retardant property is good Good, long service life, it is sturdy and durable the advantages that, there are extensive market prospects；

5, glass fibre composite fire-proof layer has heatproof using glass fibre mat as substrate compared with organic fiber The features such as height, non-ignitable, anti-corruption is heat-insulated, and tensile strength is high, and electrical insulating property is good, and capable of recycling, it is environmentally friendly, it can be with to open fire Fireproof flame-retardant effect is played, can be 600 DEG C~1000 DEG C with flame resistant, while thermal insulation property is had both, Flameproof composite material peace Loopful is protected, without any toxic.

6, it equipped with being combined in psp steel band and oversheath equipped with phosphating steel wire, so that the structure of cable is more firm, is not easy Deformation, while ground connection or Anti-Jamming can also be played.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model flame-resistant insulation adhesive tape；

Fig. 3 is the structural schematic diagram of the utility model glass fibre composite fire-proof layer.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing,

As shown in Figure 1, a kind of copper core polyvinyl chloride insulation flame-retardant strand type described in the utility model connects soft electricity Cable, including copper core 1 extrude polyvinyl chloride insulation layer 2 outside copper core and constitute insulated wire cores, and two insulated wire cores are parallel to column twisted After refill heat conductive silica gel fill-in pad 3 constitute cable core, the wrapped flame-resistant insulation adhesive tape with a thickness of 0.08mm-0.10mm outside cable core 4, porcelain type fire retardant polyolefin sheath 5 is extruded into outside flame-resistant insulation adhesive tape, is externally provided at porcelain type fire retardant polyolefin sheath Psp steel band 6 is externally provided with the internal pvc oversheath 8 for being equipped with a pair of symmetrical phosphating steel wire 7 in psp steel band, in pvc oversheath It is externally provided with glass fibre composite fire-proof layer 9.

As shown in Fig. 2, the flame-resistant insulation adhesive tape 4 includes top layer, middle layer and lowest level, the top layer is poly- Imide membrane 41, with a thickness of 0.03mm-0.04mm, the middle layer is plastic basis material 42, and the lowest level is polyimides Film 41, with a thickness of 0.02mm-0.04mm, the plastic basis material is bonded with two layers of polyimide film by adhesive At having many advantages, such as that structure is simple, electrical insulation properties are good, flame retardant property is good, long service life, sturdy and durable, have Extensive market prospects.

As shown in figure 3, the glass fibre composite fire-proof layer 9 by triplex glass fiber mat and be compound in mat 91 it Between two layers of cured phenolic coating 92 form, there is heatproof height, non-ignitable, anti-corruption, heat-insulated, tension with organic fiber compared with The features such as intensity is high, and electrical insulating property is good, and can recycle, environmental protection can play fireproof flame-retardant effect, Ke Yinai to open fire 600 DEG C~1000 DEG C of flame, while thermal insulation property is had both, the Flameproof composite material safety and environmental protection, without any toxic.

The above is only the preferred embodiment of the utility model.It should be pointed out that for the common skill of the art For art personnel, without departing from the principle of this utility model, various modifications and improvements can be made, these deformation and Improvement also should be regarded as the protection scope of the utility model.

Claims (3)

1. a kind of copper core polyvinyl chloride insulation flame-retardant strand type connection flexible cable, it is characterised in that: including copper core, in copper core Polyvinyl chloride insulation layer is extruded outside and constitutes insulated wire cores, and two insulated wire cores refill heat conductive silica gel filling after being twisted in parallel to column Pad constitutes cable core, and the wrapped flame-resistant insulation adhesive tape with a thickness of 0.08mm-0.10mm, extrudes outside flame-resistant insulation adhesive tape outside cable core At porcelain type fire retardant polyolefin sheath, it is being externally provided with psp steel band at porcelain type fire retardant polyolefin sheath, is being externally provided in psp steel band Inside is equipped with the pvc oversheath of a pair of symmetrical phosphating steel wire, is externally provided with glass fibre composite fire-proof layer in pvc oversheath.

2. copper core polyvinyl chloride insulation flame-retardant strand type connection flexible cable according to claim 1, it is characterised in that: The flame-resistant insulation adhesive tape includes top layer, middle layer and lowest level, and the top layer is Kapton, with a thickness of 0.03mm-0.04mm, the middle layer are plastic basis materials, and the lowest level is Kapton, with a thickness of 0.02mm- 0.04mm, the plastic basis material are bonded with two layers of polyimide film by adhesive.

3. copper core polyvinyl chloride insulation flame-retardant strand type connection flexible cable according to claim 1, it is characterised in that: The glass fibre composite fire-proof layer is by triplex glass fiber mat and two layers of cured phenolic aldehyde tree being compound between mat Rouge coating composition.