CN218299402U

CN218299402U - Plastic insulated cable with frost crack prevention function

Info

Publication number: CN218299402U
Application number: CN202222174863.3U
Authority: CN
Inventors: 林子胜
Original assignee: Kunming Haitian Cable Co ltd
Current assignee: Kunming Haitian Cable Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2023-01-13
Anticipated expiration: 2032-08-18

Abstract

The utility model discloses a plastics insulated cable with prevent frostbite and split function, including conductive core, and wrap up the insulating layer on conductive core, the insulating layer is including cladding in proper order in the outside insulating inlayer of conductor wire, thermostatic layer, insulation support, strengthening layer and cold-resistant oversheath be equipped with armor, outer enhancement layer, outer heat preservation, rubberized fabric layer between strengthening layer and the cold-resistant oversheath in proper order. The utility model has the characteristics of environmental protection, cold-resistant, anti-freezing, anticorrosive and anti-cracking performance are good, and the low temperature resistant ability of cable is strong, has effectively reduced the influence of environmental factor to the construction, can satisfy to lay and sustainable operation under low temperature environment, has solved the cable oversheath and has met the problem that low temperature embrittlement is easy to split; the cold-resistant outer sheath has high freezing resistance relative to a common outer sheath, the frost crack prevention requirement of the cable is guaranteed, the service life of the armor layer is prolonged, and the requirement of low-temperature environment application can be well met.

Description

Plastic insulated cable with frost crack prevention function

Technical Field

The utility model belongs to the technical field of the cable wire manufacturing, especially, relate to a plastic insulated cable with prevent frostbite and split the function.

Background

The wire and cable for transmitting electric energy, information and converting electromagnetic energy consists of one or several insulated wire cores and their coating, protecting layer and protecting layer. The cable in the prior art is basically formed by compounding a protective sleeve on the outer side of a cable core, and is very easy to damage after being used for a long time, so that the service life of the cable is shortened, and the requirements of power transmission engineering in low-temperature and high-cold environments cannot be met.

At present, there is a particular lack of transmission cables that can be used in extreme environmental climates (extremely cold climates); therefore, the key to the problem is to develop a power transmission cable which meets the characteristics of cold resistance and freezing resistance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a plastic insulated cable with prevent frostbite and split function.

The utility model discloses a following technical scheme realizes: including conductive core, and wrap up the insulating layer on conductive core, the insulating layer is including wrapping in proper order in the outside insulating inlayer of conductor wire, thermostatic layer, insulation support, strengthening layer and cold-resistant oversheath be equipped with armor, outer enhancement layer, outer heat preservation, strong rubberized fabric layer between strengthening layer and the cold-resistant oversheath in proper order, wherein, thermostatic layer in the axial be equipped with an at least electric heating wire, the insulation support be the rubber insulating tube, outer heat preservation is the aerogel felt.

Furthermore, the outside cladding of strong rubberized fabric layer have the transition layer, the transition layer is the heat shrinkage bush structure of EVA material.

The utility model has the advantages that: the utility model has the characteristics of environmental protection, cold-resistant, anti-freezing, anticorrosive and anti-cracking performance are good, and the low temperature resistant ability of cable is strong, has effectively reduced the influence of environmental factor to the construction, can satisfy to lay and sustainable operation under low temperature environment, has solved the cable oversheath and has met the problem that low temperature embrittlement is easy to split; compared with a common outer sheath, the cold-resistant outer sheath also has high frost resistance, the frost crack prevention requirement of the cable is ensured, the service life of the armor layer is prolonged, and the requirement of low-temperature environment application can be well met.

Drawings

FIG. 1 is a schematic view of the present invention;

the reference numbers in the figures: 1-conductive wire core, 2-insulating inner layer, 3-constant temperature layer, 4-electric heating wire, 5-heat preservation sleeve, 6-strengthening layer, 7-strengthening rib net, 8-armor layer, 9-outer strengthening layer, 10-outer heat preservation layer, 11-strong rubberized fabric layer, 12-transition layer, and 13-cold-resistant outer sheath.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is provided with reference to the accompanying drawings.

As shown in fig. 1 have plastics insulated cable who prevents frostbite function, including conductive core 1 and wrap up the insulating layer on conductive core 1, the insulating layer is including cladding in proper order in the outside insulating inlayer 2 of conductor wire, constant temperature layer 3, insulation support 5, strengthening layer 6 and cold-resistant oversheath 13 be equipped with armor 8, outer enhancement layer 9, outer heat preservation 10, strong rubberized fabric layer 11 between strengthening layer 6 and the cold-resistant oversheath 13 in proper order, wherein, constant temperature layer 3 in the axial be equipped with an at least electric heating wire 4, under extreme low temperature or extreme weather, electric heating wire 4 generates heat for the inside temperature that provides of cable, prevents that each structural layer of cable from being frozen out for a long time or suddenly, insulation support 5 be rubber insulating tube, outer heat preservation 10 is the aerogel felt, rubber insulating tube has thermal-insulated heat preservation, heat conductivity is low, thermal-insulated heat preservation performance is steady and good fire resistance's function, cladding cable that can be fine is laid and is used in low temperature environment to effectively guarantee the stability of transmission of work.

The reinforced layer 6 is made of HDPE (high-density polyethylene), at least one layer of reinforced rib net 7 is arranged in the reinforced layer 6, the reinforced rib net 7 is made of metal wires or fibers, the HDPE has the characteristic of high density, weather resistance and cracking resistance, and the reinforced rib net 7 is added to reinforce the flexibility and strength of the reinforced layer 6, so that the reinforced layer provides a better protection function.

Strong rubberized fabric layer 11 outside cladding have transition layer 12, transition layer 12 is the heat shrinkage bush structure of EVA material, utilizes the EVA material to be heated the characteristic that can the crimple, when making the cable, heats transition layer 12, makes transition layer 12 be heated the crimple and will be in the same place outer heat preservation 10, strong rubberized fabric layer 11 crimples, prevents loosely, the stability of cable when promoting cable construction's integrity and transmission signal.

The inner wall surface of the cold-resistant outer sheath 13 is uniformly provided with the modified epoxy acrylic resin coating, the sprayed modified epoxy acrylic resin coating can further improve the corrosion resistance of the cable, and the cable is excellent in insulating property and corrosion resistance, has a thin coating structure, and saves cost while enhancing the protection performance of the cable.

The outer wall surface of the cold-resistant outer sheath 13 is uniformly provided with a polyimide coating, the polyimide has excellent freezing resistance and low temperature resistance, the freezing resistance and the freezing resistance of the cable can be further improved, the coating structure is thin, and the cost is saved while the protective performance of the cable is enhanced.

Claims

1. The utility model provides a plastics insulated cable with prevent frostbite and split function, includes conductive core (1) and wraps up the insulating layer on conductive core (1), its characterized in that: the insulating layer is including wrapping in proper order in outside insulating inlayer (2), thermostatic layer (3), insulation support (5), strengthening layer (6) and cold-resistant oversheath (13) of conductor wire be equipped with armor (8), outer enhancement layer (9), outer heat preservation (10), strong rubberized fabric layer (11) between strengthening layer (6) and cold-resistant oversheath (13) in proper order, wherein, thermostatic layer (3) in the axial be equipped with an at least electric heating wire (4), insulation support (5) be the rubber insulating tube, outer heat preservation (10) are the aerogel felt.

2. The plastic insulated cable with frost crack prevention function according to claim 1, wherein: the reinforced layer (6) is HDPE polyethylene, the reinforced layer (6) is internally provided with a reinforced rib net (7), and the reinforced rib net (7) is made of metal wires or fibers.

3. The plastic insulated cable with frost crack prevention function according to claim 1, wherein: the outside cladding of strong rubberized fabric layer (11) have transition layer (12), transition layer (12) are the heat shrinkage bush structure of EVA material.

4. The plastic insulated cable with frost crack prevention function according to claim 1, wherein: the inner wall surface of the cold-resistant outer sheath (13) is uniformly provided with a modified epoxy acrylic resin coating.

5. The plastic insulated cable with frost crack prevention function according to claim 1, wherein: the outer wall surface of the cold-resistant outer sheath (13) is uniformly provided with a polyimide coating.