CN108831613A - A kind of core is displaced small power cable - Google Patents

A kind of core is displaced small power cable Download PDF

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Publication number
CN108831613A
CN108831613A CN201810859983.2A CN201810859983A CN108831613A CN 108831613 A CN108831613 A CN 108831613A CN 201810859983 A CN201810859983 A CN 201810859983A CN 108831613 A CN108831613 A CN 108831613A
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China
Prior art keywords
core
parts
sheath
support bar
power cable
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CN201810859983.2A
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Chinese (zh)
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张锐
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Individual
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Priority to CN201810859983.2A priority Critical patent/CN108831613A/en
Publication of CN108831613A publication Critical patent/CN108831613A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1875—Multi-layer sheaths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1895—Internal space filling-up means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/221—Longitudinally placed metal wires or tapes
    • H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021—Features relating to screening tape per se
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)

Abstract

Small power cable is displaced the invention discloses a kind of core, including the several wire core as conductor, the outer surface of the core is enclosed with insulating layer, the outer surface of the insulating layer is enclosed with shielded layer, and it is wrapped in the armor for being used to protect core outside core, and it is set in the second sheath outside armor, the first sheath is provided between the core and armor, first sheath is wrapped in core periphery, and support bar is clamped in the first gap between sheath and core point of contact, the support bar is arranged along the axial direction of core, steel wire is additionally provided in the support bar, the steel wire and support bar are integrally formed, and steel wire extends along the axial direction of core；The core, which is displaced small power cable, has the advantages that structurally reasonable, stability in use is high.

Description

A kind of core is displaced small power cable
Technical field
The invention belongs to electrical facility technical fields, and in particular to a kind of core is displaced small power cable.
Background technique
Power cable is a kind of use for superscribing corresponding insulating sleeve as conductor and outside conductor by copper or aluminium In the cable for transmitting and distributing electric energy, power cable is usually used in urban distribution network, power station lead line, industrial and mining enterprises' in-line power Etc. occasions.Wherein with the continuous development in city, and for the safety and the succinct needs of city appearance for electricity consumption, increasingly More power cables has been embedded to underground, that is, constitutes Urban Underground power grid；In order to guarantee economy that power cable uses, one Power cable generally all with two or more cores, i.e., is wrapped up core with for the crust of power cable using sheath, And filler is filled in the gap of core to improve the performance for doing punching press of cable, but filler is typically all such as material rope etc Soft material cannot make the phase of core is opposite to keep stablizing, therefore power cable can be made to make when being laid with because of becoming bent At between core displacement and cable when in use cable core conductor because when load because heat extend with and conductor and oversheath Between have the inconsistent of the swollen coefficient of Peng and creep all positions for generating core lead to displacement between core, the displacement between core It will lead to the shielded layer damage on core surface when rubbing serious, so that electric field when cannot run to cable generates screen well It covers, while may also lead to and mutually puncture between cable；Secondly as cable cover(ing) is directly facing worst use environment, Therefore also result in that the protective cover material of existing power cable is poor there are ageing-resistant and weatherability and service life is shorter lacks Point.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of cores structurally reasonable, that stability in use is high to be displaced small electricity Power cable.
In order to solve the above-mentioned technical problem, the technical scheme is that：
A kind of core is displaced small power cable, including the several wire core as conductor, the appearance bread of the core It is wrapped with insulating layer, the outer surface of the insulating layer is enclosed with shielded layer, and the armour for being used to protect core being wrapped in outside core Filling layer, and the second sheath being set in outside armor is additionally provided with the first sheath between the core and armor, described the One sheath is wrapped in core periphery, and support bar is clamped in the gap between the first sheath and core point of contact, the support bar Axial direction along core arranges, and is additionally provided with steel wire in the support bar, the steel wire and support bar are integrally formed, and steel wire Along core axial direction extend, the support bar be polypropylene support item, and support bar respectively with the first sheath and shielded layer Outer surface be mutually matched and fit closely, due between the first restrictive coating and the gap of core be provided with respectively with first shield Core is laminated fixation by jacket layer and the mutually matched support bar of core, the mutual cooperation of support bar and the first sheath, effectively Reduce core in cable laying because bending and generate displacement and cable use when cable core conductor because load when because The creep all positions for extending with and having between conductor and oversheath the inconsistent of the swollen coefficient of Peng for heat and generate core lead to core Between displacement；The steel wire in support bar also improves the tensile property of cable while improving its flexibility simultaneously.
Preferably, the shielded layer is fine copper shielded layer, facilitate shielded cable generated electric field when in use.
Preferably, the armor is steel band, and steel band is wound in the outer surface of the second sheath in the shape of a spiral, facilitates Improve the anti-damage performance of power cable.
Preferably, the raw material that first sheath and the second sheath include following weight is made：Polyethylene 57-69 parts of grain, 20-32 parts of ptfe micropowder, 11-14 parts of trioctyl trimellitate (TOTM), 26-33 parts of glass fibre, just 2.5-2.8 parts of Vanillyl pelargonic amide, 7-9 parts of carbon black, 9-15 parts of lead stearate, 2-7 parts of lead sulfate tribasic, stearic acid list 2.4-2.8 parts of glycerolipid, 6-7 parts of antimony oxide, 1.1-1.3 parts of phosphite, 0.5-0.8 parts of methyl methacrylate With 0.1-0.3 parts of paraffin oil.
The invention solves another problem be provide a kind of core be displaced small power cable the first protective case and The manufacturing method of second protective case, includes the following steps：
1) it takes melt in 57-69 parts and ptfe micropowder 20-32 parts addition mixing machine of polyethylene particle and mix Conjunction is handled, and heating temperature 100-110 degree in mixing machine, mixing machine speed of agitator is set as 300-400 revolutions per minute；
2) when mixing built-in temperature reaches 40-55 and spends, it is added phosphite 1.1-1.3 part, reduction mixing machine stirs at this time Mixing speed is 120-150 revolutions per minute, while improving in mixing machine heating temperature to 160-175 degree, and continue to be stirred 5 points Clock；
3) trioctyl trimellitate (TOTM) 11-14 parts, 26-33 parts of glass fibre, positive nonyl are added in the mixing machine in step 2) 2.5-2.8 parts of sour oxamides, 7-9 parts of carbon black, 9-15 parts of lead stearate, 2-7 parts of lead sulfate tribasic, stearic acid list are sweet 2.4-2.8 parts of grease, 6-7 parts of antimony oxide, 0.5-0.8 parts of methyl methacrylate and 0.1-0.3 parts of paraffin oil add Enter into mixing machine and continues stirring after polyethylene particle all melting and continue agitating 10-15 minutes；
4) temperature of mixing machine is adjusted to 150 degree in step 3), and mixing speed is adjusted to 110-120 revolutions per minute；
5) discharge port of mixing machine is connected with the feed inlet of power cable injection moulding machine, and carried out core and support Item is wrapped in the injection molding of the first sheath therein.
6) outer surface of the first sheath carries out steel strip winding using tape armouring machine to form armor in step 5).
7) injection molding of the second sheath is carried out in the outer surface of armor using cable injection moulding machine in step 6) ?.
Of the invention has the technical effect that following aspect：Due to being set between the first restrictive coating and the gap of core It has set respectively with the first restrictive coating and the mutually matched support bar of core, the mutual cooperation of support bar and the first sheath is by core phase Mutually pressing fix, effectively reduce core in cable laying because bending and generate displacement and cable use when core Conductor is because because heat extends with and have between conductor and oversheath the inconsistent of the swollen coefficient of Peng and makes core generation when loading Creep all positions lead to the displacement between core；Steel wire while improving its flexibility of the steel wire in support bar also has higher simultaneously Tensile strength and improve the tensile property of cable；In addition using polyethylene as the masterbatch of sheath and raising is added in the application The auxiliary material ptfe micropowder of sheath comprehensive performance, trioctyl trimellitate (TOTM), glass fibre, pelargonic acid vanilla amide, carbon black, Lead stearate, lead sulfate tribasic, stearic acid list glycerolipid, antimony oxide, phosphite, methyl methacrylate and paraffin Oil, wherein ptfe micropowder can effectively improve resistance to scraping and wearability of the sheath when being laid with, and carbon black is as sheath Coloring agent while, can mutually be cooperateed with ptfe micropowder to improve the wear-resisting property of sheath, and carbon black and phosphorous The mutual coordinated of sour lipid phase simultaneously improves sheath to the resistance of ultraviolet light, that is, improves the anti-aging property of sheath；Glass fibre can be with Improve the mechanical performance and environmental stress cracking resistance of sheath；Lead stearate, lead sulfate tribasic, which mutually cooperate, improves poly- second Thermal stability of the alkene in working process；The anti-flammability of sheath can be improved in antimony oxide；Trioctyl trimellitate (TOTM) is as increasing Modeling agent can improve the workability of sheath, while cooperating with the stearic acid list glycerolipid as lubricant and improving sheath note Easy mold release when modeling；Pelargonic acid vanilla amide can be bitten in use by mouse to avoid sheath as mouse bite preventing agent and It is destroyed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of core of the invention is displaced small power cable；
Fig. 2 is the enlarged drawing in the section that a kind of core of the invention is displaced small power cable.
Specific embodiment
A specific embodiment of the invention is described in further detail below in conjunction with attached drawing, so that technical solution of the present invention is easier to In understanding and grasp.
In the present embodiment, it is to be understood that term " centre ", "upper", "lower", " top ", " right side ", " left end ", " top ", " back side ", " middle part ", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, only It is of the invention for ease of description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, the connection or fixed form between component if not otherwise specified in this embodiment, connection or solid Determine mode can for fixed by bolt commonly used in the prior art or pin fix or pin shaft connection etc. modes, therefore, this It is no longer described in detail in embodiment.
Embodiment 1：
A kind of core is displaced small power cable, the core 1 including the several wire core 1 as conductor, in the present embodiment It is three, and core 1 is fine copper core, the outer surface of the core 1 is enclosed with insulating layer 2, the appearance bread of the insulating layer 2 Be wrapped with shielded layer 3, and be wrapped in outside core 1 for protecting the armor 4 of core 1, and be wrapped in outside armor 4 the Two sheaths 5 are additionally provided with the first sheath 6 between the core 1 and armor 4, first sheath 6 is wrapped in 1 periphery of core, And support bar 7 is clamped in the first gap between sheath 6 and 1 point of contact of core, due to being provided with three cores in the present embodiment 1, three cores 1 generate three big gaps after arranging in the first sheath 6, so support bar 7 is corresponding to be also just equipped with three , the support bar 7 arranges along the axial direction of core 1, and steel wire 8, the steel wire 8 and branch are additionally provided in the support bar 7 Stay 7 is integrally formed by being molded, and steel wire 8 extends along the axial direction of core 1, and the support bar 7 is polypropylene support item 7, and support bar 7 is mutually matched and fits closely with the outer surface of the first sheath 6 and shielded layer 3 respectively, due in the first sheath 6 Layer the gap of core 1 between be provided with respectively with 6 layers of the first sheath and the mutually matched support bar 7 of core 1, support bar 7 and Core 1 is laminated fixation by the mutual cooperation of the first sheath 6, effectively reduce core 1 in cable laying because bending and The displacement of generation and cable using when 1 conductor of core because because heat extends with and has between conductor and oversheath when load Creep all positions that are inconsistent and generating core 1 of Peng is swollen coefficient lead to the displacement between core 1；Steel in support bar 7 simultaneously Silk 8 also improves the tensile property of cable while improving its flexibility.The shielded layer 3 is fine copper shielded layer, helps to shield Cover cable generated electric field when in use.The armor 4 is steel-tape armouring layer, and steel band is wound in the second shield in the shape of a spiral The outer surface of set 5, helps to improve the anti-damage performance of power cable.
Embodiment 2：
A kind of core is displaced the first protective case of small power cable and the manufacturing method of the second protective case, including following step Suddenly：
1) it takes and carries out melting mixing processing in 57 parts of polyethylene particle and 20 parts of addition mixing machines of ptfe micropowder, mix 100 degree of heating temperature in conjunction machine, mixing machine speed of agitator are set as 300 revolutions per minute；
2) when mixing built-in temperature reaches 40 degree, 1.1 parts of phosphite are added, reducing mixing machine mixing speed at this time is 120 revolutions per minute, while heating temperature is improved in mixing machine to 160 degree, and continues to be stirred 5 minutes；
3) 11 parts of trioctyl trimellitate (TOTM), 26 parts of glass fibre, pelargonic acid vanilloyl are added in the mixing machine in step 2) 2.5 parts of amine, 7 parts of carbon black, 9 parts of lead stearate, 2 parts of lead sulfate tribasic, 2.4 parts of stearic acid list glycerolipid, antimony oxide 6 Part, 0.5 part of methyl methacrylate and 0.1 part of paraffin oil are added in mixing machine and continue stirring until polyethylene particle is whole After melting and continue agitating 10 minutes；
4) temperature of mixing machine is adjusted to 150 degree in step 3), and mixing speed is adjusted to 110 revolutions per minute；
5) discharge port of mixing machine is connected with the feed inlet of power cable injection moulding machine, and carried out core and support Item is wrapped in the injection molding of the first sheath therein.
6) outer surface of the first sheath carries out steel strip winding using tape armouring machine to form armor in step 5).
7) injection molding of the second sheath is carried out in the outer surface of armor using cable injection moulding machine in step 6) ?.
Embodiment 3：
A kind of core is displaced the first protective case of small power cable and the manufacturing method of the second protective case, including following step Suddenly：
1) it takes and carries out melting mixing processing in 69 parts of polyethylene particle and 32 parts of addition mixing machines of ptfe micropowder, mix 110 degree of heating temperature in conjunction machine, mixing machine speed of agitator are set as 400 revolutions per minute；
2) when mixing built-in temperature reaches 55 degree, 1.3 parts of phosphite are added, reducing mixing machine mixing speed at this time is 150 revolutions per minute, while heating temperature is improved in mixing machine to 175 degree, and continues to be stirred 5 minutes；
3) 14 parts of trioctyl trimellitate (TOTM), 33 parts of glass fibre, pelargonic acid vanilloyl are added in the mixing machine in step 2) 2.8 parts of amine, 9 parts of carbon black, 15 parts of lead stearate, 7 parts of lead sulfate tribasic, 2.8 parts of stearic acid list glycerolipid, antimony oxide 7 Part, 0.8 part of methyl methacrylate and 0.3 part of paraffin oil are added in mixing machine and continue stirring until polyethylene particle is whole After melting and continue agitating 15 minutes；
4) temperature of mixing machine is adjusted to 150 degree in step 3), and mixing speed is adjusted to 120 revolutions per minute；
5) discharge port of mixing machine is connected with the feed inlet of power cable injection moulding machine, and carried out core and support Item is wrapped in the injection molding of the first sheath therein.
6) outer surface of the first sheath carries out steel strip winding using tape armouring machine to form armor in step 5).
7) injection molding of the second sheath is carried out in the outer surface of armor using cable injection moulding machine in step 6) ?.
Embodiment 4：
A kind of core is displaced the first protective case of small power cable and the manufacturing method of the second protective case, including following step Suddenly：
1) it takes and carries out melting mixing processing in 63 parts of polyethylene particle and 26 parts of addition mixing machines of ptfe micropowder, mix 105 degree of heating temperature in conjunction machine, mixing machine speed of agitator are set as 350 revolutions per minute；
2) when mixing built-in temperature reaches 48 degree, 1.2 parts of phosphite are added, reducing mixing machine mixing speed at this time is 135 revolutions per minute, while heating temperature is improved in mixing machine to 168 degree, and continues to be stirred 5 minutes；
3) 12.5 parts of trioctyl trimellitate (TOTM), 30 parts of glass fibre, pelargonic acid vanilla are added in the mixing machine in step 2) 2.6 parts of amide, 8 parts of carbon black, 12 parts of lead stearate, 4 parts of lead sulfate tribasic, 2.6 parts of stearic acid list glycerolipid, antimony oxide 6.5 parts, 0.7 part of methyl methacrylate and 0.2 part of paraffin oil are added in mixing machine and continue stirring until polyethylene particle After all melting and continue agitating 13 minutes；
4) temperature of mixing machine is adjusted to 150 degree in step 3), and mixing speed is adjusted to 115 revolutions per minute；
5) discharge port of mixing machine is connected with the feed inlet of power cable injection moulding machine, and carried out core and support Item is wrapped in the injection molding of the first sheath therein.
6) outer surface of the first sheath carries out steel strip winding using tape armouring machine to form armor in step 5).
7) injection molding of the second sheath is carried out in the outer surface of armor using cable injection moulding machine in step 6) ?.
Experimental example:
Experimental subjects：Using the sheath that 2-4 of the embodiment of the present invention is produced as experimental group one, experimental group two, experimental group Three, ZB-YJV-4X240 power cable identical with type of the present invention on the market and with polyethylene protective case is bought, and shell Contrast groups of the pvc sheath as this experimental example from the power cable.
Experiment purpose：Test above-mentioned experimental group and the ultraviolet ray ageing test of contrast groups sheath, tensile strength, extension at break Rate, burn self-extinguishing time, and it is GB/T16422.2 that wherein ultraviolet ray ageing, which surveys formula standard, and simulates 2500 hours burn-in tests, draws The testing standard for stretching intensity is ISO527-5:1997, the testing standard of elongation at break is GB3923-83, wear-resisting property rubs The standard of estimating for wiping coefficient is GB10006；Simultaneously by Experiment Data Records in following table.
In conjunction with being record respectively in experimental group one, experimental group two, experimental group three and contrast groups about about sheath in upper table Ultraviolet ray ageing test, tensile strength, elongation at break, the experimental data for the self-extinguishing time that burns, by above table The comparison of experimental data, it is known that sheath in the present invention has preferably compared with ageing properties and higher tensile strength, with And with the comparable elongation at break of sheath in experimental group.
Of the invention has the technical effect that following aspect：Due to being set between the first restrictive coating and the gap of core It has set respectively with the first restrictive coating and the mutually matched support bar of core, the mutual cooperation of support bar and the first sheath is by core phase Mutually pressing fix, effectively reduce core in cable laying because bending and generate displacement and cable use when core Conductor is because because heat extends with and have between conductor and oversheath the inconsistent of the swollen coefficient of Peng and makes core generation when loading Creep all positions lead to the displacement between core；Steel wire while improving its flexibility of the steel wire in support bar also has higher simultaneously Tensile strength and improve the tensile property of cable；In addition using polyethylene as the masterbatch of sheath and raising is added in the application The auxiliary material ptfe micropowder of sheath comprehensive performance, trioctyl trimellitate (TOTM), glass fibre, pelargonic acid vanilla amide, carbon black, Lead stearate, lead sulfate tribasic, stearic acid list glycerolipid, antimony oxide, phosphite, methyl methacrylate and paraffin Oil, wherein ptfe micropowder can effectively improve resistance to scraping and wearability of the sheath when being laid with, and carbon black is as sheath Coloring agent while, can mutually be cooperateed with ptfe micropowder to improve the wear-resisting property of sheath, and carbon black and phosphorous The mutual coordinated of sour lipid phase simultaneously improves sheath to the resistance of ultraviolet light, that is, improves the anti-aging property of sheath；Glass fibre can be with Improve the mechanical performance and environmental stress cracking resistance of sheath；Lead stearate, lead sulfate tribasic, which mutually cooperate, improves poly- second Thermal stability of the alkene in working process；The anti-flammability of sheath can be improved in antimony oxide；Trioctyl trimellitate (TOTM) is as increasing Modeling agent can improve the workability of sheath, while cooperating with the stearic acid list glycerolipid as lubricant and improving sheath note Easy mold release when modeling；Pelargonic acid vanilla amide can be bitten in use by mouse to avoid sheath as mouse bite preventing agent and It is destroyed.
Certainly, above is representative instance of the invention, and in addition to this, the present invention can also have other a variety of specific implementations Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.

Claims (5)

1. a kind of core is displaced small power cable, including the several wire core as conductor, the outer surface of the core is wrapped up There is insulating layer, the outer surface of the insulating layer is enclosed with shielded layer, and the armouring for being used to protect core being wrapped in outside core Layer, and the second sheath being set in outside armor, it is characterised in that：The first shield is provided between the core and armor Set, first sheath is wrapped in core periphery, and is clamped with support bar in the gap between the first sheath and core point of contact, institute The axial direction that support bar is stated along core arranges, be additionally provided in the support bar steel wire, the steel wire and support bar integral into Type, and steel wire extends along the axial direction of core.
2. a kind of core according to claim 1 is displaced small power cable, it is characterised in that：The shielded layer is fine copper Shielded layer.
3. a kind of core according to claim 1 is displaced small power cable, it is characterised in that：The armor is steel Band, and steel band is wound in the outer surface of the second sheath in the shape of a spiral.
4. a kind of core according to claim 1 is displaced small power cable, it is characterised in that：The support bar is poly- third Alkene support bar, and support bar is mutually matched and fits closely with the outer surface of the first sheath and shielded layer respectively.
5. a kind of core according to claim 1 is displaced small power cable, it is characterised in that：First sheath and Two sheaths include that the raw material of following weight is made：57-69 parts of polyethylene particle, 20-32 parts of ptfe micropowder, 11-14 parts of trioctyl trimellitate (TOTM), 26-33 parts of glass fibre, 2.5-2.8 parts of pelargonic acid vanilla amide, 7-9 parts of carbon black, 9-15 parts of lead stearate, 2-7 parts of lead sulfate tribasic, 2.4-2.8 parts of stearic acid list glycerolipid, 6-7 parts of antimony oxide, 1.1-1.3 parts of phosphite, 0.5-0.8 parts of methyl methacrylate and 0.1-0.3 parts of paraffin oil.
CN201810859983.2A 2018-08-01 2018-08-01 A kind of core is displaced small power cable Withdrawn CN108831613A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111269487A (en) * 2020-03-07 2020-06-12 张宏涛 Communication cable
CN111341489A (en) * 2020-03-07 2020-06-26 张宏涛 Cable and method for manufacturing cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111269487A (en) * 2020-03-07 2020-06-12 张宏涛 Communication cable
CN111341489A (en) * 2020-03-07 2020-06-26 张宏涛 Cable and method for manufacturing cable
CN111341489B (en) * 2020-03-07 2021-10-22 金泰电缆有限公司 Cable and method for manufacturing cable

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Application publication date: 20181116