CN205751674U - One is pressed waterproof multi-core cable - Google Patents

One is pressed waterproof multi-core cable Download PDF

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Publication number
CN205751674U
CN205751674U CN201620392733.9U CN201620392733U CN205751674U CN 205751674 U CN205751674 U CN 205751674U CN 201620392733 U CN201620392733 U CN 201620392733U CN 205751674 U CN205751674 U CN 205751674U
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China
Prior art keywords
cable
waterproof
layer
sheath
core
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CN201620392733.9U
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Chinese (zh)
Inventor
吴惠明
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DONGGUAN MINXING CABLE Co Ltd
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DONGGUAN MINXING CABLE Co Ltd
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Priority to CN201620392733.9U priority Critical patent/CN205751674U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Abstract

This utility model belongs to technical field of cables, particularly relate to one is pressed waterproof multi-core cable, including two to five preformation cable cores, every preformation cable core is disposed with conductor from the inside to the outside, composite bed, outer semiconductor waterstop, aluminium-plastic tape and fire retardant jacket, inner sheath it is enclosed with the most successively outside preformation cable core, armor, lapping layer and oversheath, it is filled with packed layer between preformation cable core and inner sheath, composite bed is disposed with conductor shield from the inside to the outside, insulating barrier, insulation screen and metal screen layer, interior semiconductor waterstop it is provided with between insulation screen and metal screen layer.Middle pressure waterproof multi-core cable of the present utility model arranges multi-shielding layer, double waterstop, hermetically sealed armor and high-density polyethylene outer sheath, makes in full face waterproof construction, i.e. radially waterproof and longitudinally waterproof combination, makes waterproof effect more preferable.

Description

One is pressed waterproof multi-core cable
Technical field
This utility model relates to cable technology, is specifically related in one press waterproof multi-core cable.
Background technology
Along with development and the acceleration of urbanization process of national economy, high voltage power cable power transmission is used just to become current city The trend that utility grid is built.Owing to laying the needs of environment, increasing midium voltage cable needs be laid in pond, subsoil water In, even need to be laid in sea water.And the midium voltage cable generally produced uses the plastic materials such as PVC, PE as protecting mostly Cover material, although and the plastic materials such as PVC, PE have excellence electrically and mechanical performance, but block-water performance is poor, cable Being placed in water operation for a long time, water can slowly penetrate in plastic material, forms water tree, causes cable breakdown.In known in existing Pressure water-proof cable technology, all also exists the problem that some fire resistances are poor, water proofing property is poor.According to statistics, state inner city net 10-35kV electricity In Force system, the common XLPE insulated cable that underground uses, generally can grow a large amount of water tree after running 8 to 12 years, cause There is breakdown accident because of water tree in a large amount of crosslinked cables, affects the safe operation of electrical network, therefore is necessary to press in research and development one waterproof Multicore cable.
Summary of the invention
The purpose of this utility model is for above-mentioned deficiency of the prior art, it is provided that press waterproof multi-core cable in one, By adding conductor shield, insulating barrier, insulation screen, metal screen layer, semiconductor waterstop, plastic-aluminum combined in the cable Band and fire retardant jacket, it is possible to be effectively prevented moisture to insulated wire cores and along the diffusion of insulated wire cores length direction, isolation electricity Electromagnetic interference in power cable, it is ensured that avoid outside mechanical wounding while cable bend performance, it is possible to meet cable long-term day Light be exposed to the sun under normal use, prevent moisture cable service life of extending influence to cable internal direction simultaneously.
The purpose of this utility model is achieved through the following technical solutions:
Pressing waterproof multi-core cable in one, including two to five preformation cable cores, every preformation cable core sets the most successively It is equipped with conductor, composite bed, outer semiconductor waterstop, aluminium-plastic tape and fire retardant jacket, outside preformation cable core the most successively Be enclosed with inner sheath, armor, lapping layer and oversheath, between preformation cable core and inner sheath, be filled with packed layer, composite bed from Interior to being disposed with outward conductor shield, insulating barrier, insulation screen and metal screen layer, at insulation screen and metal screen Cover and between layer, be provided with interior semiconductor waterstop.
Wherein, described conductor is to have the 2nd similar round of GB/T3956-2008 to press the oxygen-free copper conductor of structure.
Wherein, described conductor shield be count be the zinc-plated copper wire braid of 80%-95%.
Wherein, described insulating barrier is crosslinked polyetylene insulated layer, and described insulation screen is semiconducting material.
Wherein, described metal screen layer is tin plating copper mesh woven shield, and thickness is 4.0-4.5mm.
Wherein, described packed layer is polypropylene packed layer.
Wherein, described fire retardant jacket is low smoke and zero halogen sheath.
Wherein, described inner sheath is pe sheath, and described lapping layer is layer of polyester fiber.
Wherein, described oversheath is high density polyethylene (HDPE) sheath, and thickness is 3.0-4.0mm.
Wherein, described high density polyethylene (HDPE) sheath is outside equipped with waterproof coating layer.
This utility model can efficiently solve the solution of problem waterproof, moistureproof:
(1) waterproof, the most moistureproof: 1. during aluminium alloy conductor is stranded, to utilize Electrostatic Spray Technology to make water-proofing powder Preferably it is attached between conductor single line, the outer wrapped semiconductor waterstop of conductor.2. the gap of insulated wire cores stranding uses and blocks water Yarn is filled, the outer wrapped semiconductor waterstop of cable core.
(2) the most waterproof, moistureproof: 1. conductor is outer, insulation shielding is outer, the outer wrapped semiconductor waterstop of cable core.2. cable core bag Outer layer of polyethylene (there is the water resistance of the excellence) separation sleeve that extrudes of band, the outer lock armo aluminum alloy strip of separation sleeve, armor Extrude outward outer protective polyethylene set.Omnibearing waterproof, humidity resistance has been reached above from longitudinal direction, radially two kinds of structures.Effectively Solve the water tree and electric branch caused that make moist because of cable or soak, improve service life and the reliability of cable.
In view of XLPE cable water inlet, make moist after impact on cable operational reliability Yu life-span, have been developed over both at home and abroad Many cables block water technology.These technology that block water generally can be classified as follows: 1. presses used material water-proof material, can be divided into The technology that actively blocks water and the technology that passively blocks water;2. by the mechanism that blocks water used, longitudinal water-blocking technology and radial water-resisting can be divided into Technology.Abroad to the research of water repellent electric cable mechanical development relatively early.
Being added by vertical alclad plastic composite strip and extrude low smoke and zero halogen composite sheath, the vertical equipment heated baking being surrounded by specialty completes, The surface film making aluminium-plastic tape lap is bonded, and forms a complete seamless aluminium-plastic pipe, squeezes During bag low smoke and zero halogen sheath, due to the effect of low smoke and zero halogen sheath melt body height moderate pressure, the low cigarette of plastic-aluminum combined belt surface without The inner surface of halogen sheath thin film and pe sheath is well pasted, and lap when aluminum plastic belt indulges bag simultaneously also enters one Step is bondd, thus completely plugged moisture (gas) penetrates into the approach of cable, reaches good radial water-resisting requirement.
The beneficial effects of the utility model:
1. this utility model uses multilayer screen layer the most effectively to ensure the transmission of signal, prevents because power cable contains height Subharmonic, on cable louding circuit, can produce strong interference to other electronic equipment about, automatically processing device, To such an extent as to equipment produces misoperation and causes consequence.
2. this utility model is using high density polyethylene (HDPE) sheath as the protection device of whole cable, protects its internal structure to exempt from Injured by external mechanical force collision, friction etc., it is ensured that the permanently effective operation of cable.
3. the material of this utility model armor originally uses aluminium alloy, utilizes the advanced technologies of chain armouring, not only may be used To improve machine security and electrical safety performance, the loss of minimizing circuit of traditional cable, and may also operate as certain resistance Water and flame retardant effect.Aluminum alloy strip is nonmagnetic substance, even if there is three phase unbalance current, also will not produce eddy current, it is possible to Reduce the loss of circuit.And once run into fire, the insulated wire cores of inside can be made well to isolate with outside burning things which may cause a fire disaster, play one Fixed flame retardant effect.Further, since armor is self-locking form, sealing is preferable, has certain radial water-resisting performance.
4. the conductive surface electric field that the interior semi-conductive shield outside of this utility model makes is more uniform, will not produce local electric Electric discharge phenomena are concentrated in field.
5. this utility model is designed from longitudinal direction, radially two kinds of waterproof constructions, has reached omnibearing effect waterproof, moistureproof Really.Efficiently solve the water tree and electric branch caused that make moist because of cable or soak, improve cable service life and can By property.
Accompanying drawing explanation
Utilize accompanying drawing that utility model is described further, but the embodiment in accompanying drawing is not constituted of the present utility model What limits, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to the following drawings Obtain other accompanying drawing.
Fig. 1 is the structural representation of embodiment 1 of the present utility model.
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
Fig. 3 is the structural representation of embodiment 3 of the present utility model.
Fig. 4 is the structural representation of embodiment 4 of the present utility model.
Fig. 5 is the structural representation of preformation cable core of the present utility model.
Reference includes: 1 preformation cable core, 2 packed layers, 3 inner sheaths, 4 armors, 5 lapping layers, 6 oversheaths, 7 conductors, 8 conductor shields, 9 insulating barriers, 10 insulation screens, semiconductor waterstop, 12 metal screen layers, 13 outer semiconductives block water in 11 Band, 14 aluminium-plastic tapes, 15 fire retardant jackets.
Detailed description of the invention
With the following Examples this utility model is further described.
Embodiment 1
The one of the present embodiment as shown in Figure 1 and Figure 5 is pressed waterproof multi-core cable, including two preformation cable cores 1, every Preformation cable core 1 is disposed with conductor 7, composite bed, outer semiconductor waterstop 13, aluminium-plastic tape 14 from the inside to the outside and fire-retardant protects Set 15, is enclosed with inner sheath 3, armor 4, lapping layer 5 and oversheath 6, preformation cable core the most successively outside preformation cable core 1 Being filled with packed layer 2 between 1 and inner sheath 3, composite bed is disposed with conductor shield 8, insulating barrier 9, insulation from the inside to the outside Screen layer 10 and metal screen layer 12, be provided with interior semiconductor waterstop between insulation screen 10 and metal screen layer 12 11。
The conductor 7 of the present embodiment is to have the 2nd similar round of GB/T3956-2008 to press the oxygen-free copper conductor of structure.
The conductor shield 8 of the present embodiment is zinc-plated copper wire braid, and count is 80%.
The insulating barrier 9 of the present embodiment is crosslinked polyetylene insulated layer 9, and shrinkage factor is 0.5%, and described insulation screen 10 is Semiconducting material.
The metal screen layer 12 of the present embodiment is tin plating copper mesh woven shield, and thickness is 4.0mm.
The packed layer 2 of the present embodiment is polypropylene packed layer 2.
The fire retardant jacket 15 of the present embodiment is low smoke and zero halogen sheath.
The inner sheath 3 of the present embodiment is pe sheath.
The lapping layer 5 of the present embodiment is layer of polyester fiber.
The oversheath 6 of the present embodiment is high density polyethylene (HDPE) sheath, and thickness is 3.0mm.
The material of the waterproof coating layer of the present embodiment is water-proof acrylic acid paint, and this coating is with pure acrylic acid polymer breast Liquid is base material, adds other additives and prepared one-component water-emulsifying type waterproof coatings.Formed after water-repellent paint is cured is anti- Water thin film has certain extensibility, elastoplasticity, crack resistance, impermeability and weatherability, can play waterproof, anti-blending and protect work With.Water-repellent paint has good thermal adaptability, easy and simple to handle, it is easy to keeps in repair and safeguards.
Embodiment 2
The one of the present embodiment as shown in Figure 2 and Figure 5 is pressed waterproof multi-core cable have three preformation cable cores 1.
The metal screen layer 12 of the present embodiment is tin plating copper mesh woven shield, and thickness is 4.2mm.
The oversheath 6 of the present embodiment is high density polyethylene (HDPE) sheath, and thickness is 3.5mm.
Remaining content of the present embodiment is same as in Example 1, repeats no more here.
Embodiment 3
The one of the present embodiment as shown in Figure 3 and Figure 5 is pressed waterproof multi-core cable have four preformation cable cores 1.
The metal screen layer 12 of the present embodiment is tin plating copper mesh woven shield, and thickness is 4.5mm.
The oversheath 6 of the present embodiment is high density polyethylene (HDPE) sheath, and thickness is 4.0mm.
Remaining content of the present embodiment is same as in Example 1, repeats no more here.
Embodiment 4
The one of the present embodiment as illustrated in figures 4-5 is pressed waterproof multi-core cable have five preformation cable cores 1.
Being additionally provided with plastic layer between armor 4 and the lapping layer 5 of the present embodiment, plastic layer is commercially available phenolic materials Layer, is commonly called as bakelite layer.
Remaining content of the present embodiment is same as in Example 1, repeats no more here.
Last it should be noted that, above example is only in order to illustrate the technical solution of the utility model, rather than to this reality With the restriction of novel protected scope, although having made to explain to this utility model with reference to preferred embodiment, this area general Logical it will be appreciated by the skilled person that the technical solution of the utility model can be modified or equivalent, without deviating from this The spirit and scope of utility model technical scheme.

Claims (9)

1. one kind is pressed waterproof multi-core cable, it is characterised in that: include two to five preformation cable cores, every preformation cable core by interior extremely It is disposed with outward conductor, composite bed, outer semiconductor waterstop, aluminium-plastic tape and fire retardant jacket, by interior outside preformation cable core To being enclosed with inner sheath, armor, lapping layer and oversheath successively outward, between preformation cable core and inner sheath, it is filled with packed layer, Composite bed is disposed with conductor shield, insulating barrier, insulation screen and metal screen layer from the inside to the outside, at insulation screen And it is provided with interior semiconductor waterstop between metal screen layer;Described oversheath is high density polyethylene (HDPE) sheath, and thickness is 3.0- 4.0mm。
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described conductor is that oxygen-free copper is led Body.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described conductor shield is braiding Density is the zinc-plated copper wire braid of 80%-95%.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described insulating barrier is for cross-linking poly-second Alkene insulating barrier, described insulation screen is semiconducting material.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described metal screen layer is tin plating Copper mesh woven shield, thickness is 4.0-4.5mm.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described packed layer is reclaimed polypropylene Fill layer.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described fire retardant jacket be low cigarette without Halogen sheath.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described inner sheath is that polyethylene protects Set, described lapping layer is layer of polyester fiber.
One the most according to claim 1 is pressed waterproof multi-core cable, it is characterised in that: described high density polyethylene (HDPE) sheath It is outside equipped with waterproof coating layer.
CN201620392733.9U 2016-05-04 2016-05-04 One is pressed waterproof multi-core cable Active CN205751674U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620392733.9U CN205751674U (en) 2016-05-04 2016-05-04 One is pressed waterproof multi-core cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620392733.9U CN205751674U (en) 2016-05-04 2016-05-04 One is pressed waterproof multi-core cable

Publications (1)

Publication Number Publication Date
CN205751674U true CN205751674U (en) 2016-11-30

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107301900A (en) * 2017-06-22 2017-10-27 重庆鸽牌电线电缆有限公司 35KV multilayer flashing cables

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107301900A (en) * 2017-06-22 2017-10-27 重庆鸽牌电线电缆有限公司 35KV multilayer flashing cables

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