CN205943535U - Double -deck insulated power cable of long -life protection against rodents termite resistance - Google Patents

Abstract

The utility model discloses a double -deck insulated power cable of long -life protection against rodents termite resistance, including insulation core and cable core, the cable core includes firstly around covering, interior sheath, armor, second around covering and outer jacket outward in proper order, the cable core is formed by single or the transposition of many insulation core, insulation core from interior to exterior includes conductor, the inner insulating layer and external insulation layer in proper order, the cable core is the filling layer with insulation core's clearance, the conductor is the annealed copper conductor, the inner insulating layer's material is crosslinked polyethylene, the material of external insulation layer is the crosslinked polyolefin, the first covering that winds is buddhist nun tangential belt, this product still has longer life in rat damage ant evil serious area and still has steamed, the low cigarette of excellent nothing, fire -retardant, characteristic such as block water simultaneously, can realize that cable life reached more than 50 years.

Description

A kind of termite-proof double hyer insulation power cable of long-life protection against rodents

Technical field

This utility model belongs to technical field of electric wires and cables, specifically, is that a kind of long-life protection against rodents is termite-proof double-deck exhausted Edge power cable.

Background technology

At present, power cable on the market is single layer dielectrics power cable, and under home, service life is 30 years, And the current House Property of China is 70 years it is meant that these cables are under normal operation using also at least needing to change 2 times.So that Later maintenance cost is huge, increased the difficulty of construction of later maintenance simultaneously.Particularly in China's the Changjiang river areas to the south Coptotermes formosanus Shtrari. calamity Evil is serious, these regional cable lifes even less than 15 years.And the preventing and treating to Coptotermes formosanus Shtrari. at present mainly has medicine, run counter to and now may be used The theory of sustainable development.Therefore the performance of cable is put forward higher requirement.

Utility model content

The technical problems to be solved in the utility model is to provide one kind seriously still to have longer use in area in plague of rats ant evil Life-span also has Halogen, low cigarette, the fire-retardant, power cable of the characteristic such as block water simultaneously.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is：A kind of long-life protection against rodents is termite-proof double-deck exhausted Edge power cable, including insulated wire cores and cable core, include successively outside described cable core the first lapping layer, sheath, armor, second Lapping layer and outer jacket, insulated wire cores are stranded forms by single or many for described cable core, described insulated wire cores from the inside to the outside according to Secondary inclusion conductor, inner insulating layer and external insulation layer, described cable core is packed layer with the gap of insulated wire cores, and described conductor is annealing Copper conductor, the material of described inner insulating layer is crosslinked polyethylene, and the material of described external insulation layer is cross-linked polyolefin, described first Lapping layer is nylon tape.

Further, the material of described sheath is high density polyethylene (HDPE).

Further, described armor weaves armor for zinc-coated wire.

Further, described second lapping layer is the yarn material that blocks water.

Further, described outer jacket is polyamide material.

The beneficial effects of the utility model are：The termite-proof double hyer insulation of a kind of long-life protection against rodents that this utility model provides Power cable, have the plague of rats ant evil seriously area still have longer service life also have simultaneously excellent Halogen, low cigarette, Fire-retardant, the characteristic such as block water, and still can achieve that cable service life reaches more than 50 years, product each side under the premise of meeting the demand Face excellent performance, and good economic and social benefit can be produced.

Brief description

Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings：

Fig. 1 is structural representation of the present utility model；

In figure：Conductor 1；Inner insulating layer 2；External insulation layer 3；Packed layer 4；First lapping layer 5；Sheath 6；Armor 7；The Two lapping layers 8；Outer jacket 9.

Below in conjunction with the drawings and specific embodiments, structure of the present utility model is further described in detail.

Specific embodiment

As shown in figure 1, a kind of knot of the termite-proof double hyer insulation power cable of long-life protection against rodents providing for this utility model Structure schematic diagram, including insulated wire cores, cable core, the first lapping layer 5, sheath 6, armor 7, the second lapping layer 8 and outer jacket 9, wherein, described insulated wire cores are made up of copper conductor 1 and its outer wrapped double layer of insulation, that is, insulated wire cores from the inside to the outside according to Secondary inclusion copper conductor 1, inner insulating layer 2 and external insulation layer 3, described conductor 1 is formed using multiply annealed copper monofilament process, conductor layer Surface should bright and clean, impulse- free robustness, not broken string；Described insulating barrier 2 and insulating barrier 3 are double by crosslinked polyethylene and cross-linked polyolefin respectively Layer co-extrusion is extruded on described conductor 1, and inner insulating layer thickness is less than the 50% of insulation gross thickness.Insulating barrier should fit tightly and lead Body, it is easy to peeling off and not damaging conductor, must not have space, transverse section must not have the defects such as the visible trachoma of eyesight between double hyer insulation. Described cable core is formed by after single or many insulated wire cores twisted synthesizing cable, outer wrapped first lapping layer 5 of the cable core after stranding, and first Lapping layer 5 is nylon tape, and the gap between described cable core and insulated wire cores is packed layer 4, and the packing material of described packed layer should From non-absorbent material such as PP rope etc., filling should ensure that cable core rounding, consolidation, wrapped should be convinced, closely, no damaged or dew bag Phenomenon, band joint application adhesive tape cements.Extrude sheath 6 afterwards outside cable core, the material of sheath is high density polyethylene (HDPE), Sheath thickness should meet national standard, smooth surface, the smooth, defect such as bubble-free, crackle, impurity, mechanical damage.Sheath It is outward that zinc-coated wire weaves armor 7, count is more than 85%, braiding layer surfacing, no substantially broken string, jump stock phenomenon； Wrapped water blocking yarn the second lapping layer 8 after braided steel wire, band is wrapped should to be convinced, closely, no damaged or dew bag phenomenon, band joint Application adhesive tape cements.Rat-and-ant proof polyamide (nylon) outer jacket 9 is extruded, surface should be bright and clean, smooth, no after wrapped second lapping layer The defects such as bubble, crackle, impurity, mechanical damage.Cable answers that lettering is correct, clear, anti-scratch.

Preferably inner insulating layer material is crosslinked polyethylene, and external insulation layer material is cross-linked polyolefin, can meet after irradiation Cable to insulation requirement, and meet cable to mechanical performance, fire resistance, low smoke and zero halogen performance requirement, meet cable pair The requirement that service life is more than 50 years；Preferably armor material weaves armouring for zinc-coated wire, and density is more than 85%, both improves Protection to cable core has also taken into account bending property, enhance its resistance to pressure it is therefore prevented that cable in outdoor complexity occasion by mouse Injury caused by biting, extends service life；Preferred second lapping layer around packaging material be water blocking yarn, it is to avoid cable Soak under complex environment the impact to cable life；Preferably outer sheath material is polyamide (nylon), and this material is to cable While protection is provided, enhance the resistivity to Mus ant for the cable.

Above in conjunction with accompanying drawing, this utility model is exemplarily described it is clear that this utility model implements is not subject to The restriction of aforesaid way, as long as employ changing of the various unsubstantialities that method design of the present utility model is carried out with technical scheme Enter, or not improved by of the present utility model design and technical scheme directly apply to other occasions, all in this utility model Protection domain within.Protection domain of the present utility model should be defined by the protection domain that claims are limited.

Claims (5)

1. the termite-proof double hyer insulation power cable of a kind of long-life protection against rodents, including insulated wire cores and cable core it is characterised in that：Described The first lapping layer (5), sheath (6), armor (7), the second lapping layer (8) and outer jacket (9), institute is included successively outside cable core Insulated wire cores are stranded forms by single or many to state cable core, and described insulated wire cores include conductor (1), interior insulation from the inside to the outside successively Layer (2) and external insulation layer (3), described cable core is packed layer (4) with the gap of insulated wire cores, and described conductor (1) is led for annealed copper Body, the material of described inner insulating layer (2) is crosslinked polyethylene, and the material of described external insulation layer (3) is cross-linked polyolefin, described the One lapping layer (5) is nylon tape.

2. a kind of termite-proof double hyer insulation power cable of long-life protection against rodents according to claim 1 it is characterised in that：Described The material of sheath (6) is high density polyethylene (HDPE).

3. a kind of termite-proof double hyer insulation power cable of long-life protection against rodents according to claim 1 it is characterised in that：Described Armor (7) weaves armor for zinc-coated wire.

4. a kind of termite-proof double hyer insulation power cable of long-life protection against rodents according to claim 1 it is characterised in that：Described Second lapping layer (8) is the yarn material that blocks water.

5. a kind of termite-proof double hyer insulation power cable of long-life protection against rodents according to claim 1 it is characterised in that：Described Outer jacket (9) be polyamide material.