CN108053921A - A kind of flexible water coaxial ground cable and preparation method thereof - Google Patents
A kind of flexible water coaxial ground cable and preparation method thereof Download PDFInfo
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- CN108053921A CN108053921A CN201711355024.9A CN201711355024A CN108053921A CN 108053921 A CN108053921 A CN 108053921A CN 201711355024 A CN201711355024 A CN 201711355024A CN 108053921 A CN108053921 A CN 108053921A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
- H01B13/148—Selection of the insulating material therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/32—Filling or coating with impervious material
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- 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
- H01B7/0009—Details relating to the conductive cores
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- 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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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- 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
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- 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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
A kind of flexible water coaxial ground cable and preparation method thereof, comprises the following steps：Thin filament tow is first twisted into strand, then twists to form inner wire again by multiply strand again；Wrapped non-woven fabrics waterstop forms inner waterproofing layer in the conductor；Ethylene propylene rubber insulated formation insulating layer is extruded again；Further around bag outer conductor layer；Wrapped non-woven fabrics waterstop forms exterior waterproof coating on outer conductor；Finally extrude the technical solution that flexibility pvc sheathing compound forms oversheath, the metallic sheath of existing connection high-tension cable is overcome and during cross interconnected dedicated box, still using caused by common power cable or common coaxial ground cable the defects of security risk；Solve the 110KV and more than high pressure, ehv power transmission crossing elimination interconnection ground connection problem and provide easy manufacturing process；It is suitble to metallic sheath, cross interconnected dedicated box and the 110KV of various high-tension cables and more than high pressure, the connection of ehv power transmission circuit, use and cables manufacturing.
Description
Technical field
The present invention relates to technical field of electric wires and cables more particularly to a kind of flexible water coaxial ground cable and its preparation sides
Method.
Background technology
At present, 110KV and more than high pressure, ehv power transmission circuit generally all transmit alternating current with single-core cable,
Three-phase is laid in a word or isosceles triangle.High voltage single-core cable has metallic sheath, such as wrinkle aluminum metal set, and metallic sheath is in every phase electricity
Under the action of alternative electric field that steaming transfer generates, induced voltage can be generated, sensing electric current, induced electricity will be also generated in metallic sheath
The height of pressure and the length of cable run and flow through conductor electric current it is directly proportional, when short trouble occurs for cable run, by thunder
When surge or switching overvoltage, very high induced voltage can be formed on metallic sheath, in some instances it may even be possible to cause cable breakdown.Therefore,
Cable must be divided into 3 or 3 integral multiple circuit, the induced voltage on cable metal sheath is made to be less than 50V (safe voltage).
The current common power cable of generally use or common coaxial ground cable connect the metal of high-tension cable
Set and cross interconnected dedicated box, but these cables only considered the operation of cable current-carrying, not in view of cable installation situation and reality
Use environment, cable service life, 110KV and more than high pressure, ehv power transmission circuit be usually all the underground that is laid in,
Due to limited conditions, often spatial dimension is narrow, is not easy to installation for ground end environment, in south and close to coastal cities, cable
Environment after laying is all much dark, moist or even also the situation of ponding, these factors may all cause conventional power electric
There is water tree in use for some time in cable or generic coaxial earth cable, and insulation performance reduces, and therefore, it is necessary to one kind coaxially to connect
Ground cable solves the problems, such as this.
The content of the invention
A kind of flexible water coaxial ground cable is provided it is an object of the invention to overcome the deficiency of the above-mentioned prior art
And preparation method, the configuration of the present invention is simple, actual installation practice is very convenient, and cable security performance is high, service life is long, is used for
Connect high-tension cable metallic sheath and cross interconnected dedicated box, solve 110KV and more than high pressure, ehv power transmission circuit hand over
Fork interconnection problem with grounding.
To achieve the above object, the present invention provides a kind of preparation method of cable, comprises the following steps：
S01, the step of inner wire is prepared：Thin filament tow is first twisted into strand, then twists to form inner wire again by multiply strand again；
S02, the step of inner waterproofing layer is prepared：Wrapped non-woven fabrics waterstop in the conductor forms inner waterproofing layer；
S03, the step of insulating layer is prepared：Ethylene propylene rubber insulated, formation insulating layer is extruded on interior waterproof layer；
S04, the step of outer conductor layer is prepared：Wrapped outer conductor layer on the insulating layer；
S05, the step of exterior waterproof coating is prepared：The wrapped non-woven fabrics waterstop on outer conductor forms exterior waterproof coating；
S06, the step of oversheath is prepared：Flexibility pvc sheathing compound is extruded on exterior waterproof coating, forms oversheath.
Preferably, the preparation of the outer conductor layer in the step S04 comprises the following steps：
S0401 wrapped semi-conductive tape lapping layers on the insulating layer；
S0402 is combed on semi-conductive tape lapping layer combs winding layer around copper wire；
S0403 is counter in copper wire comb winding layer to prick that copper strips is counter to prick layer.
Preferably, the semi-conductive tape lapping layer in the step S0401 is overlapped wrapped using 0.2mm semi-conductive non-woven fabrics band
It forms, cap rate 25%, direction is dextrad
Preferably, in the step S0402 copper wire comb winding layer using 0.97mm to 2.25mm soft coppers monofilament closely comb around, comb around
Between coefficient is 1.02 to 1.08, direction is left-hand.
Preferably, the anti-layer of pricking of copper strips in the step S0403 is formed using 0.12mm soft copper band gaps are wrapped, clearance rate
For 50%, direction is dextrad.
Preferably, it is identical to be twisted and twist again direction of lay for the strand in the step S01, and direction is dextrad.
Preferably, 25%, direction is left-hand for the cap rate control of the inner waterproofing layer in the step S02.
Preferably, the thickness of insulating layer in the step S03 is 3.4mm, and the degree of eccentricity is less than 10%, uses EP rubbers
Material makes.
Preferably, the exterior waterproof coating in the step S04 is wrapped in the conductor using non-woven fabrics waterstop, and cap rate is
25%, direction is left-hand.
Preferably, the external sheath layer in the step S05 is squeezed out using the PVC sheath material of better softness, thick
It spends for 3.4mm, the degree of eccentricity is less than 10%.
The invention further relates to a kind of preparation methods according to cable described in any one of the above embodiments can be obtained flexible water
Coaxial ground cable including inner wire, the inner waterproofing layer being arranged on outside inner wire, the insulating layer being arranged on outside inner waterproofing layer, is set
Put the outer conductor layer outside insulating layer, the exterior waterproof coating being arranged on outside outer conductor layer and the oversheath being arranged on outside exterior waterproof coating.
A kind of flexible water coaxial ground cable of the present invention and preparation method thereof, including good using travelling performance is bent 5
Class softness mobile model annealed copper strand wire makees inner wire, and inner waterproofing layer uses the good non-woven fabrics waterstop lapping structure of water resistance, outside
Conductor, which sets semi-conductive tape lapping layer, copper wire combs winding layer and soft copper band is counter pricks layer, and exterior waterproof coating is using the good non-woven fabrics of water resistance
Waterstop lapping structure, oversheath, which uses, has good flame-retardance, the flame-retardant flexible type pvc material of flexibility and system
The technical solution of the standby cable；When overcoming the metallic sheath of existing connection high-tension cable and cross interconnected dedicated box, electricity is not considered
Insulation performance, service life, the particularity of installation and the practical service environment of cable, still using common power cable or common
Coaxial ground cable caused by security risk the defects of；It is suitable for the metallic sheath of high-tension cable and cross interconnected dedicated box
Connection, use, solve 110KV and more than high pressure, ehv power transmission crossing elimination interconnection problem with grounding.
The beneficial effects of the invention are as follows：
Inner wire uses the preferable EP rubbers of softness, outer shield using the soft mobile class conductor structure of the 5th class, insulating layer
Set makes Cable Bending Radius be reduced to six times of cable sizes from 15 times of cable sizes, more using soft type pvc sheathing compound
Be conducive to install and construct in ground end narrow environment.
Inner waterproofing layer using non-woven fabrics waterstop it is wrapped in the conductor, exterior waterproof coating using non-woven fabrics waterstop around
On outer conductor so that cable has water resistance, is more advantageous to cable and is used for a long time in dark, the moist environment of ground end, is prolonged
Long cable service life.
The present invention is in use, flexible water coaxial ground cable one end and 110KV and more than high pressure, extra-high-tension cable metal
Restrictive coating couples, and the other end is connected with the earth protective device in cross interconnected case, can be by 110KV and more than high pressure, super-pressure
The induced overvoltage of cable metal sheath layer imports the earth protective device in cross interconnected case, so as to be effectively protected 110KV
And Yi Shang high pressure, the normal operation of extra-high-tension cable, avoid the occurrence of human casualty accident.
The present invention cable is anti-oxidant, high-low temperature resistant, light-weight, structural return loss is small, radioresistance and with simultaneously
The function of transmission of control signals.
The configuration of the present invention is simple, preparation process simplify, and actual installation practice is very convenient, and cable security performance is high, uses
Long lifespan, for connecting the metallic sheath of high-tension cable and cross interconnected dedicated box, solve 110KV and more than high pressure, super-pressure
Power transmission and transformation line cross connection grounding problem.
The present invention suitable metallic sheath, cross interconnected dedicated box and the 110KV of various high-tension cables and more than high pressure, super-pressure
Connection, use and the cables manufacturing of power transmission and transformation line.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the overall structure diagram of one embodiment of the invention.
Reference numeral：
Inner wire 10；Thin monofilament 101；Inner waterproofing layer 20；Insulating layer 30；Outer conductor layer 40；Semi-conductive tape lapping layer 401；Copper wire
Comb winding layer 402；Copper strips is counter to prick layer 403；Exterior waterproof coating 50；Oversheath 60.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
As shown in attached drawing, a kind of three-phase multicore parallel current-sharing construction of cable of the present invention is realized in.
A kind of flexible water coaxial ground cable of the present invention including inner wire 10, inner waterproofing layer 20, insulating layer 30, is led outside
Body, exterior waterproof coating 50, oversheath 60；Inner wire 10, should using the 5th good class softness mobile model conductor structure of bending travelling performance
Conductor structure is that thin filament tow first is twisted into strand, and multiply strand is then twisted into inner wire again again, and strand is twisted and twists again
Conjunction direction is identical, and direction is dextrad；Inner waterproofing layer 20 using the good non-woven fabrics waterstop of water resistance on inner wire 10,
25%, direction is left-hand for cap rate control；The inner waterproofing layer 20 effectively can prevent steam from entering in conductor；Meanwhile it can prevent absolutely
EP rubbers is embedded in inner wire 10 by edge layer during extrusion, and then is added cable insulation and made connector in construction
When stripping difficulty；Insulating layer 30 is using insulation and the excellent 10KV package level ethylene-propylene rubbers of softness, thickness 3.4mm, bias
Degree is less than 10%；Outer conductor, which sets semi-conductive tape lapping layer 401, copper wire combs winding layer 402 and copper strips is counter pricks layer 403；Semi-conductive tape is wrapped
Layer 401 is located between insulating layer 30 and copper wire comb winding layer 402, can play the role of uniform insulation electric field and physical isolation, can be effective
Copper wire is avoided to comb the embedded insulating layer in production process；Semi-conductive tape lapping layer 401 uses 0.2mm semi-conductive non-woven fabric band weights
Lap wound bag forms, and cap rate 25%, direction is dextrad；Copper wire comb winding layer 402 is close using 0.97mm-2.25mm soft copper monofilament
Comb around, comb around coefficient control between 1.02-1.08, direction is left-hand；The anti-layer 403 of pricking of copper strips uses 0.12mm soft copper band gaps
Wrapped to form, clearance rate 50%, direction is dextrad.Exterior waterproof coating 50 on outer conductor, is put up using non-woven fabrics waterstop
25%, direction is left-hand for rate control.The exterior waterproof coating 50 effectively can prevent steam from entering in outer conductor, and exterior waterproof coating 50 can also
It prevents oversheath from being easily led to during extrusion in soft type pvc sheathing compound insertion outer conductor, and then adds electricity
Stripping difficulty of cable outer jacket when connector is made in construction；Oversheath 60 is gathered using anti-flammability, the flame-retardant flexible type of excellent flexibility
Vinyl chloride material makes.
The invention belongs to technical field of electric wires and cables more particularly to a kind of flexible water coaxial ground cables, are led including interior
Body, inner waterproofing layer, insulating layer, outer conductor, exterior waterproof coating, oversheath；Inner wire uses 5 class annealed copper strand wires, bends travelling performance
It is good；Inner waterproofing layer uses non-woven fabrics waterstop lapping structure, and water resistance is good；Insulating layer use EP rubbers material, insulation and
Softness is good；Outer conductor, which includes semi-conductive tape lapping layer, copper wire combs winding layer and soft copper band is counter pricks layer；Exterior waterproof coating uses nonwoven
Cloth waterstop lapping structure, water resistance are good；Oversheath uses flame-retardant flexible type pvc material, has good fire-retardant
Property, flexibility；In use, flexible water coaxial ground cable one end and 110KV and more than high pressure, extra-high-tension cable protective metal shell
Layer connection, the other end are connected with the earth protective device in cross interconnected case, can be by 110KV and more than high pressure, extra-high-tension cable
The induced overvoltage of metal sheath layer imports the earth protective device in cross interconnected case, so as to be effectively protected 110KV and with
Upper high pressure, the normal operation of extra-high-tension cable, avoid the occurrence of human casualty accident；The configuration of the present invention is simple, operation are easy for construction,
Cable security performance is high, is connect for 110KV in level-one electric power system and more than high pressure, the protection of extra-high-tension cable metal sheath
Ground.
A kind of production method of flexible water coaxial ground cable of the present invention, comprises the following steps:It Step 1: first will be carefully single
Tow is twisted into strand, then twists to form inner wire again by multiply strand again；Step 2: wrapped non-woven fabrics blocks water in the conductor
Band forms inner waterproofing layer；Step 3: ethylene propylene rubber insulated, formation insulating layer is extruded on waterproof layer；Step 4: in insulating layer
Upper wrapped semi-conductive tape, on semi-conductive tape comb around soft copper monofilament, then it is counter on soft copper monofilament prick copper strips, form outer conductor；Step
Rapid four, the wrapped non-woven fabrics waterstop on outer conductor forms exterior waterproof coating；Gather Step 5: extruding flexibility on exterior waterproof coating
Vinyl chloride protective cover material forms oversheath.
With reference to Fig. 1, the present invention provides a kind of preparation method of cable, including step in detail below：
S01, the step of inner wire 10 is prepared：First then thin 101 bundle strand of monofilament is again twisted multiply strand in formation again into strand
Conductor 10；
S02, the step of inner waterproofing layer 20 is prepared：The wrapped non-woven fabrics waterstop on inner wire 10 forms inner waterproofing layer 20；
S03, the step of insulating layer 30 is prepared：Ethylene propylene rubber insulated, formation insulating layer 30 is extruded on interior waterproof layer 20；
S04, the step of outer conductor layer 40 is prepared：The wrapped outer conductor layer 40 on insulating layer 30；
S05, the step of exterior waterproof coating 50 is prepared：The wrapped non-woven fabrics waterstop on outer conductor forms exterior waterproof coating 50；
S06, the step of oversheath 60 is prepared：Flexibility pvc sheathing compound is extruded on exterior waterproof coating 50, forms oversheath
60。
In one embodiment, the preparation of the outer conductor layer 40 in the step S04 comprises the following steps：
S0401 wrapped semi-conductive tape lapping layers 401 on insulating layer 30；
S0402 is combed on semi-conductive tape lapping layer 401 combs winding layer 402 around copper wire；
S0403 is counter in copper wire comb winding layer 402 to prick that copper strips is counter to prick layer 403.
In one embodiment, the semi-conductive tape lapping layer 401 in the step S0401 uses 0.2mm semiconductive nonwovens
Strap overlapping is wrapped to be formed, and cap rate 25%, direction is dextrad
In one embodiment, the copper wire comb winding layer 402 in the step S0402 is tight to 2.25mm soft copper monofilament using 0.97mm
Close comb is around combing around coefficient as between 1.02 to 1.08, direction is left-hand.
In one embodiment, the anti-layer 403 of pricking of copper strips in the step S0403 uses 0.12mm soft copper band gaps wrapped
It forms, clearance rate 50%, direction is dextrad.
In one embodiment, it is identical to be twisted and twist again direction of lay for the strand in the step S01, and direction is the right side
To.
In one embodiment, 25%, direction is left-hand for the cap rate control of the inner waterproofing layer 20 in the step S02.
In one embodiment, 30 thickness of insulating layer in the step S03 is 3.4mm, and the degree of eccentricity is less than 10%, adopts
It is made of EP rubbers material.
Preferably, the exterior waterproof coating 50 in the step S04 is put up using non-woven fabrics waterstop on inner wire 10
Rate is 25%, and direction is left-hand.
In one embodiment, 60 layers of pvc sheath using better softness of the oversheath in the step S05
Material squeezes out, thickness 3.4mm, and the degree of eccentricity is less than 10%.
The invention further relates to a kind of preparation methods according to cable described in any one of the above embodiments can be obtained flexible water
Coaxial ground cable, including inner wire 10, the inner waterproofing layer 20 being arranged on outside inner wire 10, be arranged on it is exhausted outside inner waterproofing layer 20
It edge layer 30, the outer conductor layer 40 being arranged on outside insulating layer 30, the exterior waterproof coating 50 being arranged on outside outer conductor layer 40 and is arranged on outer
Oversheath 60 outside waterproof layer 50.
Beneficial effects of the present invention：Inner wire 10 uses five class annealed copper strand wires, and bending travelling performance is good；Inner waterproofing layer 20 is adopted
With non-woven fabrics waterstop lapping structure, water resistance is good；Insulating layer 30 uses EP rubbers material, and insulation and softness are good；
Outer conductor layer 40, which includes semi-conductive tape lapping layer 401, copper wire combs winding layer 402 and soft copper band is counter pricks layer 403；Exterior waterproof coating 50 uses
Non-woven fabrics waterstop lapping structure, water resistance are good；Oversheath 60 uses flame-retardant flexible type pvc material, has good
Anti-flammability, flexibility.
In use, flexible water coaxial ground cable one end and 110KV and more than high pressure, extra-high-tension cable metal sheath layer
Connection, the other end are connected with the earth protective device in cross interconnected case, can be by 110KV and more than high pressure, extra-high-tension cable gold
The induced overvoltage for belonging to restrictive coating imports earth protective device in cross interconnected case, so as to be effectively protected 110KV and more than
High pressure, the normal operation of extra-high-tension cable, avoid the occurrence of human casualty accident.The configuration of the present invention is simple, operation are easy for construction,
Cable security performance is high, is connect for 110KV in level-one electric power system and more than high pressure, the protection of extra-high-tension cable metal sheath
Ground.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (10)
1. a kind of preparation method of cable, which is characterized in that comprise the following steps：
S01, the step of inner wire is prepared：Thin filament tow is first twisted into strand, then twists to form inner wire again by multiply strand again；
S02, the step of inner waterproofing layer is prepared：Wrapped non-woven fabrics waterstop in the conductor forms inner waterproofing layer；
S03, the step of insulating layer is prepared：Ethylene propylene rubber insulated, formation insulating layer is extruded on interior waterproof layer；
S04, the step of outer conductor layer is prepared：Wrapped outer conductor layer on the insulating layer；
S05, the step of exterior waterproof coating is prepared：The wrapped non-woven fabrics waterstop on outer conductor forms exterior waterproof coating；
S06, the step of oversheath is prepared：Flexibility pvc sheathing compound is extruded on exterior waterproof coating, forms oversheath.
2. a kind of flexible water coaxial ground cable according to claim 1, which is characterized in that in the step S04
The preparation of outer conductor layer comprises the following steps：
S0401 wrapped semi-conductive tape lapping layers on the insulating layer；
S0402 is combed on semi-conductive tape lapping layer combs winding layer around copper wire；
S0403 is counter in copper wire comb winding layer to prick that copper strips is counter to prick layer.
3. a kind of flexible water coaxial ground cable according to claim 2, which is characterized in that in the step S0401
Semi-conductive tape lapping layer using 0.2mm semi-conductive non-woven fabrics band overlapping it is wrapped form, cap rate 25%, direction is dextrad
The preparation method of cable according to claim 2, which is characterized in that the copper wire comb winding layer in the step S0402
Using 0.97mm to 2.25mm soft coppers monofilament closely comb around combing around coefficient as between 1.02 to 1.08, direction is left-hand.
4. the preparation method of cable according to claim 2, which is characterized in that copper strips in the step S0403 is counter to be pricked
Layer is formed using 0.12mm soft copper band gaps are wrapped, and clearance rate 50%, direction is dextrad.
5. the preparation method of cable according to claim 1, which is characterized in that the strand in the step S01 be twisted with
And strand direction of lay is identical again, direction is dextrad.
6. a kind of flexible water coaxial ground cable according to claim 1, which is characterized in that in the step S02
25%, direction is left-hand for the cap rate control of inner waterproofing layer.
7. the preparation method of cable according to claim 1, which is characterized in that the thickness of insulating layer in the step S03
For 3.4mm, the degree of eccentricity is less than 10%, and EP rubbers material is used to make.
8. the preparation method of cable according to claim 1, which is characterized in that the exterior waterproof coating in the step S04 is adopted
Wrapped in the conductor with non-woven fabrics waterstop, cap rate 25%, direction is left-hand.
9. the preparation method of cable according to claim 1, which is characterized in that the external sheath layer in the step S05 is adopted
It is squeezed out with the PVC sheath material of better softness, thickness 3.4mm, the degree of eccentricity is less than 10%.
10. the preparation method of the cable according to claim 1 to 9 any one can be obtained flexible water coaxial ground
Cable, which is characterized in that including inner wire, the inner waterproofing layer being arranged on outside inner wire, the insulating layer being arranged on outside inner waterproofing layer,
The outer conductor layer being arranged on outside insulating layer, the exterior waterproof coating being arranged on outside outer conductor layer and the outer shield being arranged on outside exterior waterproof coating
Set.
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| CN201711355024.9A CN108053921A (en) | 2017-12-16 | 2017-12-16 | A kind of flexible water coaxial ground cable and preparation method thereof |
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| CN201711355024.9A CN108053921A (en) | 2017-12-16 | 2017-12-16 | A kind of flexible water coaxial ground cable and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360686A (en) * | 2018-12-03 | 2019-02-19 | 湖南华菱线缆股份有限公司 | A kind of floor cable and preparation method thereof |
| CN111477397A (en) * | 2020-04-01 | 2020-07-31 | 远东电缆有限公司 | Movable lightning protection down-lead isolation cable for military equipment and production process thereof |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360686A (en) * | 2018-12-03 | 2019-02-19 | 湖南华菱线缆股份有限公司 | A kind of floor cable and preparation method thereof |
| CN111477397A (en) * | 2020-04-01 | 2020-07-31 | 远东电缆有限公司 | Movable lightning protection down-lead isolation cable for military equipment and production process thereof |
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Application publication date: 20180518 |