CN106158116A - A kind of copper core cross-linked polyethylene insulated steel wire armored water-resistant power cable - Google Patents

The invention discloses a kind of copper core cross-linked polyethylene insulated steel wire armored water-resistant power cable, including cable core, described cable core is formed by many cores are stranded；Waterproofing rope is filled in cable core gap, at outer wrapped first waterstop of cable core, inner sheath is extruded outside the first waterstop, at outer wrapped second waterstop of inner sheath, at the outer braided steel wire armor of the second waterstop, again at outer wrapped 3rd waterstop of steel wire armor layer, finally extrude oversheath at cable outermost layer；Described core includes copper conductor, the most overlapping wrapped semiconductive of water blocking yarn is first directly dragged to block water band outside copper conductor, blocking water at semiconductive, band is outer extrudes internal shield, insulating barrier and external shielding layer respectively in three-layer co-extruded mode, again in the outer wrapped semiconductor waterstop of external shielding layer, outside semiconductor waterstop, finally weave shielding layer of copper wires.The multiple stop water such as present invention employs that core blocks water, cable core blocks water, block water outside cable core, not only can effectively prevent steam from entering inside cable, it is simply that rainwater weather, water all cannot be introduced in cable, thus extends the service life of cable.

A kind of copper core cross-linked polyethylene insulated steel wire armored water-resistant power cable

Technical field

The present invention relates to electric wire field, be specifically related to a kind of copper core cross-linked polyethylene insulated steel wire armored and block water electric power Cable.

Background technology

Progress and the development of society, numerous Business groups, skyscraper, place of public amusement, subway along with science and technology And underground street etc. continues to bring out, its power consumption grows with each passing day, and kind and the consumption of all kinds of cables increase the most accordingly.But it is common Cable can not bear mechanical external force simultaneously and carry out the most waterproof, and in many important events, once cable sustains damage or enters Water results in the systems such as power supply, communication and cannot run when even having an accident, and makes troubles to normal social life.

Mechanically damaged in order to prevent, power cable, at outer layer armored protective layer, forms armored cable.Cable adds armour The purpose of dress layer is in addition to strengthening the mechanical protection such as tensile strength, comprcssive strength and increasing the service life, more importantly by screen Cover protection improve cable interference free performance, also can in case pound, press, rack cable sheath after damage core cause short circuit.Also have New problem: one is blocking water of armored cable, and water is the primary factor affecting cable security performance, and steam once enters in cable Portion, the triumphant insulation crosslinked polyethylene reaching cable easily produces water tree, and the service life of cable will be substantially reduced；Two is pulse electricity Pressing the impact on insulation, the frequency range of variable-frequency power sources is relatively wide, but its waveform is the frequency band profile of a basic frequency, contains Many higher hamonic waves, amplitude is the biggest, and this harmonic wave can feed through to cable, it is possible to causes cable breakdown.

Summary of the invention

In order to overcome the deficiencies in the prior art, it is provided that the copper core of a kind of multiple stop water is crosslinked polyetylene insulated Wire armoring water-resistant power cable.

For achieving the above object, the present invention provides a kind of copper core cross-linked polyethylene insulated steel wire armored water-resistant power cable, Including cable core, described cable core is formed by many cores are stranded；Waterproofing rope is filled, at cable core outer wrapped first in cable core gap Waterstop, extrudes inner sheath outside the first waterstop, at outer wrapped second waterstop of inner sheath, weaves steel outside the second waterstop Silk armor, then at outer wrapped 3rd waterstop of steel wire armor layer, finally extrude oversheath at cable outermost layer；Described core Including copper conductor, first directly drag the most overlapping wrapped semiconductive of water blocking yarn to block water band outside copper conductor, block water outside band at semiconductive Internal shield, insulating barrier and external shielding layer is extruded respectively in three-layer co-extruded mode, then in external shielding layer outer wrapped semiconductive resistance Water band, finally weaves shielding layer of copper wires outside semiconductor waterstop.

Preferably, when described conductor is formed by 1+6 root copper wire is stranded, copper wire interlayer is put down and is dragged vertical waterstop wide for bag 10mm.

Preferably, when described conductor is formed by 6+12 root copper wire is stranded, copper wire interlayer is put down and is dragged vertical waterstop wide for bag 25mm.

Preferably, when described conductor is formed by 12+18 root copper wire is stranded, copper wire interlayer is put down and is dragged wide the blocking water of 40mm of vertical bag Band.

Preferably, when described conductor is formed by 18+23 root copper wire is stranded, copper wire interlayer is put down and is dragged wide the blocking water of 60mm of vertical bag Band.

The beneficial effects of the present invention is:

Compared with prior art, present invention employs that core blocks water, cable core blocks water, the multiple stop water such as block water outside cable core, no Only can effectively prevent steam from entering inside cable, it is simply that rainwater weather, water all cannot be introduced in cable, thus extends cable Service life；Construction of cable symmetrical balance, can eliminate the pulse voltage impact on cable insulation, prevent insulating barrier breakdown；Electricity The metal screen layer of cable, can use as the neutral conductor again, save material cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate The present invention rather than limit the scope of the present invention, after having read the present invention, each to the present invention of those skilled in the art The amendment planting the equivalent form of value all falls within the application claims limited range.

As it is shown in figure 1, the present invention provides a kind of copper core cross-linked polyethylene insulated steel wire armored water-resistant power cable, including cable Core, described cable core is formed by many cores are stranded；Fill waterproofing rope 9 in cable core gap, block water at cable core outer wrapped first Band 10, extrudes inner sheath 11 outside the first waterstop, at outer wrapped second waterstop 12 of inner sheath, takes probability and is not less than 20%, The outer braided steel wire armor 13 of second waterstop, then at outer wrapped 3rd waterstop 14 of steel wire armor layer, take probability and be not less than 20%, finally extrude oversheath 15 at cable outermost layer；Described core includes copper conductor 1, blocks water outer first directly the dragging of copper conductor 1 The most overlapping wrapped semiconductive of yarn 2 blocks water band 3, and taking probability should be outer with three-layer co-extruded side at the semiconductive band that block water not less than 20% Formula extrudes internal shield 4, insulating barrier 5 and external shielding layer 6 respectively, then in the outer wrapped semiconductor waterstop 7 of external shielding layer, finally Weaving shielding layer of copper wires 8 outside semiconductor waterstop, rate of putting up is not less than 15%, and direction is left-hand.

Optimizing further, when conductor is formed by 1+6 root copper wire is stranded, copper wire interlayer is put down and is dragged wide the blocking water of 10mm of vertical bag Band；When conductor is formed by 6+12 root copper wire is stranded, copper wire interlayer is put down and is dragged vertical waterstop wide for bag 25mm；When conductor is by 12+18 Root copper wire is stranded when forming, and copper wire interlayer is put down and dragged vertical waterstop wide for bag 40mm；Described conductor is formed by 18+23 root copper wire is stranded Time, copper wire interlayer is put down and is dragged vertical waterstop wide for bag 60mm.

The above is only the preferred embodiment of the present invention, it is noted that come for those of ordinary skill in the art Saying, under the premise without departing from the principles of the invention, it is also possible to make some modification and improvement, these also should be regarded as belonging to the present invention Protection domain.