CN215770662U

CN215770662U - Cross-linked polyethylene insulated flame-retardant overhead cable

Info

Publication number: CN215770662U
Application number: CN202121535448.5U
Authority: CN
Inventors: 史波
Original assignee: Wuxi Shuguang Cable Co Ltd
Current assignee: Wuxi Shuguang Cable Co Ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-02-08
Anticipated expiration: 2031-07-07

Abstract

The utility model discloses a crosslinked polyethylene insulated flame-retardant overhead cable which comprises a cable core, a wrapping tape, an armor layer, a waterproof flame-retardant layer, an outer sheath and a supporting lantern ring, wherein the cable core comprises a conductor and a heat-conducting silica gel insulating layer, the heat-conducting silica gel insulating layer is annularly arranged outside the conductor, a first graphene heat-conducting layer is annularly arranged outside the heat-conducting silica gel insulating layer, the cable core comprises a plurality of groups of cable cores and glass fiber fillers, and the glass fiber fillers are located among the groups of cable cores. According to the utility model, the heat on the wire core can be firstly conducted to the wrapping tape and the second graphene heat conduction layer by using the first graphene heat conduction layer, then the heat is dissipated to the outside through the heat conduction metal rod on the second graphene heat conduction layer, and meanwhile, the arc-shaped heat conduction silica gel pad and the heat dissipation cavity can perform auxiliary heat dissipation, so that the heat inside the wire core is dissipated to the outside, the heat dissipation effect is improved, and the phenomenon that the heat inside the wire core is gathered to influence the normal work of the cable is avoided.

Description

Cross-linked polyethylene insulated flame-retardant overhead cable

Technical Field

The utility model relates to the technical field of related cables, in particular to a crosslinked polyethylene insulating flame-retardant overhead cable.

Background

An overhead insulated cable is an overhead conductor provided with an insulating layer and a protective sheath, and is a new power transmission mode between the overhead conductor and an underground cable.

Present aerial insulated cable is in the use, and the inside sinle silk during operation of cable can produce the heat, and the holistic heat conduction of cable, radiating effect are not good, lead to the inside heat gathering of cable, influence the cable and use, and the holistic waterproof flame retardant efficiency of cable is general, and often leads to the dead weight great because of its inside too much filler of packing from aerial cable, and the centre can be the state of sinking, influences the life of cable, needs improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a crosslinked polyethylene insulated flame-retardant overhead cable to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fire-retardant aerial [ insulated ] cable of crosslinked polyethylene, includes sinle silk, cable core, winds band, armor, waterproof fire-retardant layer, oversheath and the support lantern ring, the sinle silk includes conductor and heat conduction silica gel insulating layer, heat conduction silica gel insulating layer ring is established outside the conductor, and the outside ring of heat conduction silica gel insulating layer is equipped with first graphite alkene heat-conducting layer, the cable core includes multiunit sinle silk and glass fiber filler, the glass fiber filler is located the multiunit between the sinle silk, establish outside the cable core around the band ring, the armor sets up outside around the band, waterproof fire-retardant layer sets up outside the armor, the oversheath sets up outside waterproof fire-retardant layer, the support lantern ring cover is established on the oversheath.

As further preferable in the present technical solution: be equipped with second graphite alkene heat-conducting layer around between band and the armor, second graphite alkene heat-conducting layer encircles and is established around band surface, and fixedly connected with heat conduction metal pole on the second graphite alkene heat-conducting layer lateral wall, heat conduction metal pole one end runs through the armor.

As further preferable in the present technical solution: the heat conduction metal rod is equipped with a plurality ofly, and is a plurality of the heat conduction metal rod is circumference evenly distributed on second graphite alkene heat-conducting layer, and is a plurality of the equal fixedly connected with arc heat conduction silica gel pad of heat conduction metal rod one end.

As further preferable in the present technical solution: be equipped with the heat dissipation cavity between waterproof fire-retardant layer and the armor, inside arc heat conduction silica gel pad was located the heat dissipation cavity, and arc heat conduction silica gel pad and waterproof fire-retardant layer butt.

As further preferable in the present technical solution: the waterproof flame-retardant layer comprises a water-blocking tape, a nano waterproof breathable film and a flame-retardant fiber woven layer, the water-blocking tape is fixedly adhered to the flame-retardant fiber woven layer through the nano waterproof breathable film, and the flame-retardant fiber woven layer is formed by weaving Kevlar fibers and carbon fibers.

As further preferable in the present technical solution: the heat dissipation device is characterized in that a plurality of heat dissipation grooves are formed in the inner wall of the outer sheath and are circumferentially and uniformly distributed on the inner wall of the outer sheath.

As further preferable in the present technical solution: the supporting sleeve ring comprises an inner reinforcing ring and an outer reinforcing ring, the inner reinforcing ring is fixedly sleeved on the outer jacket, and reinforcing ribs are arranged on the inner reinforcing ring and the outer reinforcing ring.

The utility model provides a crosslinked polyethylene insulated flame-retardant overhead cable which has the following beneficial effects:

(1) according to the utility model, the first graphene heat conduction layer and the second graphene heat conduction layer are arranged, firstly, heat on the wire core is conducted to the wrapping tape and the second graphene heat conduction layer through the first graphene heat conduction layer, then, the heat is dissipated to the outside through the heat conduction metal rod on the second graphene heat conduction layer, and meanwhile, the arc-shaped heat conduction silica gel pad and the heat dissipation cavity can perform auxiliary heat dissipation, so that the heat inside the wire core is dissipated to the outside, the heat dissipation effect is improved, and the phenomenon that the heat inside the wire core is gathered to influence the normal work of the cable is avoided.

(2) According to the utility model, the water blocking tape and the nano waterproof breathable film prevent external water from entering the cable, meanwhile, the flame-retardant fiber braided layer can play a good flame-retardant effect, the use safety of the cable is improved, the cable can be installed in an overhead manner through the supporting sleeve ring by arranging the supporting sleeve ring, the supporting sleeve ring can be used for carrying out stress supporting on the cable, and the cable is prevented from deforming and sinking under stress.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of part A of FIG. 2 according to the present invention;

fig. 4 is a schematic structural view of the waterproof and flame-retardant layer of the present invention.

In the figure: 1. a wire core; 2. a cable core; 3. a conductor; 4. a thermally conductive silica gel insulating layer; 5. a first graphene thermal conductive layer; 6. a glass fiber filler; 7. wrapping a tape; 8. a second graphene thermal conductive layer; 9. an armor layer; 10. a thermally conductive metal rod; 11. a heat dissipation cavity; 12. a waterproof flame-retardant layer; 13. a heat dissipation groove; 14. an arc-shaped heat-conducting silica gel pad; 15. an outer sheath; 16. an inner reinforcement ring; 17. reinforcing ribs; 18. an outer reinforcement ring; 19. a water blocking tape; 20. a nano waterproof breathable film; 21. a flame-retardant fiber braid layer; 22. a supporting collar.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: the utility model provides a fire-retardant aerial [ insulated ] cable of crosslinked polyethylene, including sinle silk 1, the cable core 2, around band 7, armor 9, waterproof fire-retardant layer 12, oversheath 15 and support lantern ring 22, sinle silk 1 includes conductor 3 and heat conduction silica

gel insulating layer

4, 3 outsides in the conductor are established to the 4 rings of heat conduction silica gel insulating layer, and 4 outsides in the heat conduction silica gel insulating layer encircle and be equipped with first graphite alkene heat-conducting layer 5, cable core 2 includes multiunit sinle silk 1 and glass fiber filler 6, glass fiber filler 6 is located between multiunit sinle silk 1, establish 2 outsides in the cable core around band 7 rings, armor 9 sets up in 7 outsides around band, waterproof fire-retardant layer 12 sets up in armor 9 outsidely, oversheath 15 sets up in waterproof fire-retardant layer 12 outsidely, support lantern ring 22 covers is established on oversheath 15.

In this embodiment, specifically: be equipped with second graphite alkene heat-conducting layer 8 around between band 7 and armor 9, second graphite alkene heat-conducting layer 8 encircles and is established on 7 surfaces around band, and fixedly connected with heat conduction metal pole 10 on the 8 lateral walls of second graphite alkene heat-conducting layer, and armor 9 is run through to heat conduction metal pole 10 one end, can utilize second graphite alkene heat-conducting layer 8 will adsorb and give off the heat through heat conduction metal pole 10 around the heat on band 7.

In this embodiment, specifically: heat conduction metal pole 10 is equipped with a plurality ofly, a plurality of heat conduction metal poles 10 are circumference evenly distributed on second graphite alkene heat-conducting layer 8, the equal fixedly connected with arc heat conduction silica gel pad 14 of a plurality of heat conduction metal pole 10 one end, can conduct and give off the heat on the second graphite alkene heat-conducting layer 8 through a plurality of heat conduction metal poles 10, and give off partial heat conduction to arc heat conduction silica gel pad 14 on, guarantee the radiating effect good, avoid 1 heat gathering of sinle silk.

In this embodiment, specifically: be equipped with heat dissipation cavity 11 between waterproof fire-retardant layer 12 and armor 9, arc heat conduction silica gel pad 14 is located inside heat dissipation cavity 11, and arc heat conduction silica gel pad 14 and waterproof fire-retardant layer 12 butt, can utilize heat dissipation cavity 11 to give off the heat of conduction to arc heat conduction silica gel pad 14, can be through arc heat conduction silica gel pad 14 with partial heat conduction to waterproof fire-retardant layer 12 on simultaneously, enlarge heat radiating area.

In this embodiment, specifically: waterproof flame retardant layer 12 includes water-blocking tape 19, waterproof ventilated membrane 20 of nanometer and flame retardant fiber weaving layer 21, water-blocking tape 19 passes through the fixed adhesion of waterproof ventilated membrane 20 of nanometer and flame retardant fiber weaving layer 21, flame retardant fiber weaving layer 21 is woven by kevlar fibre and carbon fiber and is formed, can utilize water-blocking tape 19 and the waterproof ventilated membrane 20 of nanometer to stop outside water, avoid outside water to enter into inside the cable, influence the security of cable use, and form through weaving flame retardant fiber weaving layer 21 by kevlar fibre and carbon fiber, wherein, kevlar fibre and carbon fiber all have good fire-retardant and certain intensity, can be when improving cable flame retardant efficiency, increase the tensile strength and the intensity of cable, convenient to use.

In this embodiment, specifically: the inner wall of the outer sheath 15 is provided with a plurality of heat dissipation grooves 13, the heat dissipation grooves 13 are circumferentially and uniformly distributed on the inner wall of the outer sheath 15, and the thickness of the outer sheath 15 can be reduced and heat dissipation can be effectively performed by arranging the heat dissipation grooves 13 on the inner wall of the outer sheath 15.

In this embodiment, specifically: the support lantern ring 22 includes interior beaded finish 16 and outer beaded finish 18, and interior beaded finish 16 fixed cover is established on oversheath 15, and interior beaded finish 16 and outer beaded finish 18 are provided with strengthening rib 17, can utilize strengthening rib 17 to support each other internal beaded finish 16 and outer beaded finish 18, and when using, when the cable carries out built on stilts installation, can be through the support lantern ring 22 with the built on stilts installation of cable, can utilize the support lantern ring 22 to carry out the atress support to the cable, prevents that the cable atress warp to sink.

It should be noted that, in the crosslinked polyethylene insulated flame-retardant aerial cable, when working, the first graphene heat-conducting layer 5 is arranged on the core 1, the first graphene heat-conducting layer 5 is used for conducting the heat on the core 1 to the wrapping tape 7 and the second graphene heat-conducting layer 8, then the heat is radiated to the outside through the heat-conducting metal rods 10 on the second graphene heat-conducting layer 8, the heat on the second graphene heat-conducting layer 8 can be conducted and radiated through the plurality of heat-conducting metal rods 10, and part of the heat is conducted to the arc-shaped heat-conducting silica gel pad 14 for radiation, the heat conducted to the arc-shaped heat-conducting silica gel pad 14 can be radiated through the heat-radiating cavity 11, and meanwhile, part of the heat can be conducted to the waterproof flame-retardant layer 12 through the arc-shaped heat-conducting silica gel pad 14, so as to enlarge the heat-radiating area, improve the heat-radiating effect, and avoid the heat accumulation inside the core 1, the normal operation of the cable is influenced, the waterproof flame-retardant layer 12 is arranged, the waterproof tape 19 and the nanometer waterproof breathable film 20 can be used for stopping external water, the external water is prevented from entering the cable, the use safety of the cable is influenced, the flame-retardant fiber braided layer 21 is formed by weaving Kevlar fibers and carbon fibers, the Kevlar fibers and the carbon fibers have good flame retardance and certain strength, the flame-retardant effect of the cable can be improved, meanwhile, the tensile property and the strength of the cable are improved, the supporting sleeve ring 22 is arranged, the supporting sleeve ring 22 consists of an inner reinforcing ring 16, an outer reinforcing ring 18 and a reinforcing rib 17, the reinforcing rib 17 can be used for supporting the inner reinforcing ring 16 and the outer reinforcing ring 18 mutually, when the cable is used, when the cable is installed in an overhead mode, the cable can be installed in an overhead mode through the supporting sleeve ring 22, and the cable can be supported by the supporting sleeve ring 22 in a forced mode, prevent the cable from deforming and sinking under stress and prolong the service life of the cable.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fire-retardant aerial [ insulated ] cable of crosslinked polyethylene, its characterized in that includes sinle silk (1), cable core (2), winds band (7), armor (9), waterproof fire-retardant layer (12), oversheath (15) and supports lantern ring (22), sinle silk (1) includes conductor (3) and heat conduction silica gel insulating layer (4), heat conduction silica gel insulating layer (4) encircle establish in conductor (3) outside, and heat conduction silica gel insulating layer (4) outside ring is equipped with first graphite alkene heat-conducting layer (5), cable core (2) include multiunit sinle silk (1) and glass fiber filler (6), glass fiber filler (6) are located the multiunit between sinle silk (1), encircle establish in cable core (2) outside around band (7), armor (9) set up in band (7) outside, waterproof fire-retardant layer (12) set up in armor (9) outside, the outer sheath (15) is arranged outside the waterproof flame-retardant layer (12), and the supporting lantern ring (22) is sleeved on the outer sheath (15).

2. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 1, wherein: be equipped with second graphite alkene heat-conducting layer (8) around between band (7) and armor (9), second graphite alkene heat-conducting layer (8) encircle to be established around band (7) surface, and fixedly connected with heat conduction metal pole (10) on second graphite alkene heat-conducting layer (8) lateral wall, armor (9) are run through to heat conduction metal pole (10) one end.

3. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 2, wherein: heat conduction metal pole (10) are equipped with a plurality ofly, and are a plurality of heat conduction metal pole (10) are circumference evenly distributed on second graphite alkene heat-conducting layer (8), and are a plurality of equal fixedly connected with arc heat conduction silica gel pad (14) of heat conduction metal pole (10) one end.

4. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 3, wherein: be equipped with heat dissipation cavity (11) between waterproof fire-retardant layer (12) and armor (9), arc heat conduction silica gel pad (14) are located heat dissipation cavity (11) inside, and arc heat conduction silica gel pad (14) and waterproof fire-retardant layer (12) butt.

5. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 1, wherein: the waterproof flame-retardant layer (12) comprises a water-blocking tape (19), a nano waterproof breathable film (20) and a flame-retardant fiber woven layer (21), the water-blocking tape (19) is fixedly adhered to the flame-retardant fiber woven layer (21) through the nano waterproof breathable film (20), and the flame-retardant fiber woven layer (21) is formed by weaving Kevlar fibers and carbon fibers.

6. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 1, wherein: the heat dissipation device is characterized in that a plurality of heat dissipation grooves (13) are formed in the inner wall of the outer sheath (15), and the heat dissipation grooves (13) are circumferentially and uniformly distributed on the inner wall of the outer sheath (15).

7. The cross-linked polyethylene insulated flame-retardant overhead cable according to claim 1, wherein: the support lantern ring (22) comprises an inner reinforcing ring (16) and an outer reinforcing ring (18), the inner reinforcing ring (16) is fixedly sleeved on the outer sheath (15), and reinforcing ribs (17) are arranged on the inner reinforcing ring (16) and the outer reinforcing ring (18).