CN107644703A - A kind of cable with the outer quilt of flexible insulation - Google Patents

Abstract

The invention discloses a kind of cable with quilt outside flexible insulation, including conductor, the outer wrap of the conductor has polyethylene layer, polypropylene layer is enclosed with the outside of the polyethylene layer, synthetic fiber layer is enclosed with the outside of the polypropylene layer, rubber layer is enclosed with the outside of the synthetic fiber layer, nylon wired tube is enclosed with the outside of the rubber layer, the conductor is made up of one or more copper wires, crosslinked polyethylene is used in the polyethylene layer, the polypropylene layer isotactic polypropylene, the thickness of the rubber layer is more than polyethylene layer, polypropylene layer, the thickness sum of synthetic fiber layer, the nylon wired tube can stretch.

Description

A kind of cable with the outer quilt of flexible insulation

Technical field

The present invention relates to power cable field, specifically a kind of cable with the outer quilt of flexible insulation.

Background technology

Cable is the general designation of optical cable, cable and other items.The purposes of cable has a lot, is mainly used in control installation, connection is set It is standby, the multiple action such as transmit electric power, be common and indispensable a kind of thing in daily life, because cable is powered, so Installation needs careful.The definition 1 of cable：It is made up of the conductor and outsourcing insulating protective layer of one or more mutually insulated, by electricity Power or information are transferred to the wire at another place at one；Define 2：Typically by several or several groups of wires（Every group at least two）Twist Close the cable of similar rope formed, mutually insulated between every group of wire, and being often twisted into around a center, whole outer bread There is the coating of high-insulation, cable has power cable, control cable, compensating cable, shielded cable, high-temperature cable, computer Cable, signal cable, coaxial cable, fire-resisting cable, cable for ship, mine cable, aluminium alloy cable etc., they are all by list Stock or stranded conductor and insulating barrier composition, for connecting circuit, electrical equipment.

The major defect of cable：The long-term overload operation of overload operation, will raise cable temperature, insulation ag(e)ing, with Breakdown insulation is caused, reduces construction quality；Electrically aspect has：End construction technology does not reach requirement, and cable pack-off is poor, tide Gas cut enters inside cable, and insulating performance of cable declines;Fail to take safeguard measure during cabling, protective layer goes to pot, insulation Reduce；Have in terms of civil engineering：Work well casing ditch water discharge is not smooth, and cable is immersed in water for a long time, and infringement dielectric strength work well is too small, and cable is curved Bilge radius are inadequate, and it is mainly the barbarous construction of machinery in municipal construction that the external force that is squeezed for a long time, which is destroyed, and digging injury digs power-off cable；Corrosion is protected Sheath by chemical attack or cable corrosion, causes protective layer to fail for a long time, and insulation reduces；Cable is in itself or end annex Of poor quality, cable pack-off is poor, insulating cement dissolving, cracking, causes the resonance phenomena that station occurs to make line for line disconnection failure Road capacitive coupling and direct-to-ground capacitance form resonant tank with distribution transformer magnetizing inductance, so as to excite ferromagnetic resonance, at some Cable requirement in safety protection equipment and in large-scale outdoor machinery is high, it is desirable to which cable has waterproof tensile or so, especially It is that especially high is required to the tensile property of cable in safety protection equipment, if preventing the safe thing caused by the damage of cable Therefore.

The content of the invention

It is an object of the invention to provide a kind of cable with quilt outside flexible insulation, outdoor large equipment and safety are anti- The cable that equipment provides power transmission is protected, prevents the security incident caused by cable fault.

The present invention is achieved through the following technical solutions：

A kind of cable with the outer quilt of flexible insulation, including conductor, the outer wrap of the conductor have polyethylene layer, institute State and polypropylene layer is enclosed with the outside of polyethylene layer, synthetic fiber layer, the synthesis are enclosed with the outside of the polypropylene layer Rubber layer is enclosed with the outside of fibrous layer, nylon wired tube is enclosed with the outside of the rubber layer.

Preferably, the conductor is made up of one or more copper wires.

Preferably, crosslinked polyethylene is used in the polyethylene layer.

Preferably, the polypropylene layer isotactic polypropylene.

Preferably, the thickness of the rubber layer be more than polyethylene layer, polypropylene layer, synthetic fiber layer thickness it With.

Preferably, the nylon wired tube can stretch.

Further speaking, structural principle of the invention is：By single conductor or the outer layer of more mutually twisted conductors Wrapped up with polyethylene, form polyethylene layer, polyethylene is a kind of aggregated obtained thermoplastic resin of ethene, in industry On, the also copolymer including ethene Yu a small amount of alkene, polyethylene is odorless, nontoxic, feel ceraceous, has excellent lower temperature resistance Can, reachable -100 degree of minimum temperature in use to -70 degree, chemical stability is good, is resistant to the erosion of most of soda acids, insoluble under normal temperature In common solvent, water imbibition is small, and electrical insulating property is excellent；The outer layer covers polypropylene of polyethylene is nontoxic, odorless, tasteless milky white The highly crystalline polymer of color, good moldability, crystallinity is high, compound with regular structure, has excellent mechanical property, polypropylene is most very Good flexural fatigue resistance, polypropylene also have good thermoplasticity, can be carried out disinfection sterilizing in more than 100 degree temperature, Also there is good cold resistance, embrittlement will not occur within subzero 35 degree, it is polyacrylic that also there is reactance voltage and resistance to electric arc Property, by the polypropylene quality that can improve cable in the cable, increase the service life of cable, strengthen the toughness of cable, carry The tensile property of high cable；Be enclosed with synthetic fiber layer on the outside of polypropylene layer, synthetic fibers be by it is artificial synthesized, have it is suitable Suitable molecular weight simultaneously has a soluble linear polymer, synthetic fibers intensity height, lightweight, not hygroscopic, can keep out mould with Moth；Polyethylene is a kind of aggregated obtained thermoplastic resin of ethene, industrially, also being total to including ethene and a small amount of alkene Polymers, polyethylene is odorless, nontoxic, feel ceraceous, has an excellent resistance to low temperature, minimum reachable -100 degree of temperature in use to - 70 degree, chemical stability is good, is resistant to the erosion of most of soda acids, does not dissolve in common solvent under normal temperature, water imbibition is small, electrical insulating property It is excellent；The thickness of polyvinyl chloride is more than polyethylene layer, polypropylene layer, the thickness sum of synthetic fiber layer, makes cable level Structure is clearly demarcated, and during the use of cable, polyvinyl chloride has waterproof action, has certain stability, is meeting In the case of the requirement of cable, the main insulating materials by the use of polyvinyl chloride as cable can also save production cost, In order to further improve the tensile property of cable, outer polyvinyl chloride scratch, the damage by of cable is prevented, so as to cause cable to break The tensile strength step-down of cable is split or makes, so the outer layer covers in polyvinyl chloride have nylon wired tube, nylon braiding tackling There is retractility, adapt to the cable of different-diameter, the telescopic extensions of nylon wired tube meet cable between 4 millimeters to 12 millimeters Diameter change in bending place, improve the practicality of cable.

The present invention compared with prior art, has the advantage that and had the beneficial effect that：

（1）Contain polyethylene in cable insulation material, polyethylene is a kind of aggregated obtained thermoplastic resin of ethene, in industry On, the also copolymer including ethene Yu a small amount of alkene, polyethylene is odorless, nontoxic, feel ceraceous, has excellent lower temperature resistance Can, reachable -100 degree of minimum temperature in use to -70 degree, chemical stability is good, is resistant to the erosion of most of soda acids, insoluble under normal temperature In common solvent, water imbibition is small, makes electrical insulating property excellent.

（2）Contain polypropylene in cable insulation material, polypropylene gathers for nontoxic, odorless, tasteless milky is highly crystalline Compound, good moldability, crystallinity are high, compound with regular structure, have an excellent mechanical property, and polypropylene is most good counter-bending tired Lao Xing, polypropylene also have good thermoplasticity, can be carried out disinfection sterilizing in more than 100 degree temperature, it may have well Cold resistance, embrittlement will not occur within subzero 35 degree, it is polyacrylic that also there is reactance voltage and arc resistance, polypropylene is used The quality of cable can be improved in the cable, increases the service life of cable, strengthens the toughness of cable, improve the pull resistance of cable Energy.

（3）Be enclosed with synthetic fiber layer on the outside of polypropylene layer, synthetic fibers be by it is artificial synthesized, there is appropriate molecule Measure and there is the linear polymer of solubility, it is synthetic fibers intensity height, lightweight, not hygroscopic, mould and moth can be kept out.

Brief description of the drawings

Fig. 1 is the structural representation of the present invention

Wherein 1- conductors, 2- polyethylene layers, 3- polypropylene layers, 4- synthetic fiber layers, 5- rubber layers, 6- nylon wired tubes.

Embodiment

The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this, Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, various replace is made Change and change, all should be included within the scope of the invention.

Embodiment 1：

With reference to shown in accompanying drawing 1, a kind of cable with the outer quilt of flexible insulation, including conductor 1, the outer wrap of the conductor 1 There is polyethylene layer 2, the outside of the polyethylene layer 2 is enclosed with polypropylene layer 3, and the outside of polypropylene layer 3 is wrapped up There is synthetic fiber layer 4, the outside of the synthetic fiber layer 4 is enclosed with rubber layer 5, and the outside of the rubber layer 5 is enclosed with nylon Wired tube 6, the conductor 1 are made up of one or more copper wires, and crosslinked polyethylene, institute are used in the polyethylene layer 2 The isotactic polypropylene of polypropylene layer 3 is stated, the thickness of the rubber layer 5 is more than polyethylene layer 2, polypropylene layer 3, synthetic fiber layer 4 thickness sum, the nylon wired tube 6 can stretch.

Further speaking, structural principle of the invention is：By the outer of the mutually twisted conductor 1 of single conductor 1 or more Layer is wrapped up with polyethylene, forms polyethylene layer 2, polyethylene is a kind of aggregated obtained thermoplastic resin of ethene, in work In industry, the also copolymer including ethene Yu a small amount of alkene, polyethylene is odorless, nontoxic, feel ceraceous, has excellent lower temperature resistance Can, reachable -100 degree of minimum temperature in use to -70 degree, chemical stability is good, is resistant to the erosion of most of soda acids, insoluble under normal temperature In common solvent, water imbibition is small, and electrical insulating property is excellent；The outer layer covers polypropylene of polyethylene is nontoxic, odorless, tasteless milky white The highly crystalline polymer of color, good moldability, crystallinity is high, compound with regular structure, has excellent mechanical property, polypropylene is most very Good flexural fatigue resistance, polypropylene also have good thermoplasticity, can be carried out disinfection sterilizing in more than 100 degree temperature, Also there is good cold resistance, embrittlement will not occur within subzero 35 degree, it is polyacrylic that also there is reactance voltage and resistance to electric arc Property, by the polypropylene quality that can improve cable in the cable, increase the service life of cable, strengthen the toughness of cable, carry The tensile property of high cable；The outside of polypropylene layer 3 is enclosed with synthetic fiber layer 4, synthetic fibers be by it is artificial synthesized, have Suitable molecular weight simultaneously has a soluble linear polymer, synthetic fibers intensity height, lightweight, not hygroscopic, can keep out mould And moth；Polyethylene is a kind of aggregated obtained thermoplastic resin of ethene, industrially, also including ethene and a small amount of alkene Copolymer, polyethylene is odorless, nontoxic, feel ceraceous, has excellent resistance to low temperature, minimum reachable -100 degree of temperature in use To -70 degree, chemical stability is good, is resistant to the erosion of most of soda acids, common solvent is not dissolved under normal temperature, and water imbibition is small, and electricity is absolutely Edge is excellent；The thickness of polyvinyl chloride is more than polyethylene layer 2, polypropylene layer 3, the thickness sum of synthetic fiber layer 4, makes electricity Cable hierarchical structure is clearly demarcated, and during the use of cable, polyvinyl chloride has waterproof action, has certain stability, In the case where meeting the requirement of cable, the main insulating materials by the use of polyvinyl chloride as cable can also save production Cost, in order to further improve the tensile property of cable, outer polyvinyl chloride scratch, the damage by of cable is prevented, so as to cause Cable breakage or the tensile strength step-down for making cable, so the outer layer covers in polyvinyl chloride have nylon wired tube 6, nylon is compiled Knitting set 6 has retractility, adapts to the cable of different-diameter, the telescopic extensions of nylon wired tube 6 between 4 millimeters to 12 millimeters, Meet diameter change of the cable in bending place, improve the practicality of cable.

It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention Within the scope of.

Claims (6)

1. a kind of cable with the outer quilt of flexible insulation, it is characterised in that including conductor（1）, the conductor（1）Outside bag It is wrapped with polyethylene layer（2）, the polyethylene layer（2）Outside be enclosed with polypropylene layer（3）, the polypropylene layer （3）Outside is enclosed with synthetic fiber layer（4）, the synthetic fiber layer（4）Outside be enclosed with rubber layer（5）, the rubber layer Outside be enclosed with nylon wired tube（6）.

A kind of 2. cable with the outer quilt of flexible insulation according to claim 1, it is characterised in that the conductor（1） It is made up of one or more copper wires.

3. a kind of cable with the outer quilt of flexible insulation according to claim 1, it is characterised in that the polyethylene is exhausted Crosslinked polyethylene is used in edge layer.

A kind of 4. cable with the outer quilt of flexible insulation according to claim 1, it is characterised in that the polypropylene layer （3）Isotactic polypropylene.

A kind of 5. cable with the outer quilt of flexible insulation according to claim 1, it is characterised in that the rubber layer （5）Thickness be more than polyethylene layer（2）, polypropylene layer（3）, synthetic fiber layer（4）Thickness sum.

A kind of 6. cable with the outer quilt of flexible insulation according to claim 1, it is characterised in that the nylon braiding Set（6）It can stretch.