CN214796890U

CN214796890U - High-voltage-resistant heat-resistant flame-retardant power cable

Info

Publication number: CN214796890U
Application number: CN202120470269.1U
Authority: CN
Inventors: 蒋临风; 芮逸; 芮文宰
Original assignee: JIANGSU LONG-E CABLE CO LTD
Current assignee: JIANGSU LONG-E CABLE CO LTD
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-11-19
Anticipated expiration: 2031-03-04

Abstract

The utility model discloses a high pressure resistant heat-resisting fire-retardant power cable, including the cable core, the lateral wall cladding of cable core has the heart yearn insulating layer, the lateral wall cladding of heart yearn insulating layer has the fire-retardant filling layer of inside elasticity, the inside cladding of the fire-retardant filling layer of inside elasticity has the wire insulating layer, the utility model discloses when carrying out fire-retardant shock attenuation, can protect cable core and wire to receive vibrations through the fire-retardant filling layer of inside elasticity and damage, can prevent to burn and damage again, the lateral wall cladding of the fire-retardant filling layer of inside elasticity has the heat-insulating filling layer of inside, protects interior device, reaches fire-retardant shock attenuation's purpose, and the practicality is strong, and safety protection nature is high; the utility model discloses a power cable, including the device, the device is characterized in that the lateral wall through setting up the PP plastics barrel evenly welds has six first PP plastics body of rod, bonds in the both sides of the first PP plastics body of rod and has two plate bodys, prevents the inside of high-pressure crushing power cable for the enhancement, reaches the purpose of consolidating the holding power, strengthens the mutual holding power, strengthens the pressure that this device bore.

Description

High-voltage-resistant heat-resistant flame-retardant power cable

Technical Field

The utility model relates to a power cable technical field specifically is a high pressure resistant heat-resisting fire-retardant power cable.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and transmission lines under river-crossing seawater;

in the power lines, the cable is increasing in specific gravity. The power cable is a cable product used for transmitting and distributing high-power electric energy in a main line of a power system, and comprises various voltage grades of 1-500KV and above and various insulated power cables; along with the development of social economy, the demand of the market on power cable materials is increasing day by day, the quality requirement of the cable materials needs to ensure high safety performance, the service environment of the power cable is complex, when the existing electric wire and cable meet high temperature again, the main body is easy to burn, irreparable loss can be caused, when the power cable needs to be buried underground, the internal structure of the power cable can be damaged by huge pressure, and the damage of the power cable is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high pressure resistant heat-resisting fire-retardant power cable to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high pressure resistant heat-resisting fire-retardant power cable, includes the cable core, the lateral wall cladding of cable core has the heart yearn insulating layer, the lateral wall cladding of heart yearn insulating layer has the fire-retardant filling layer of inside elasticity, the inside cladding of the fire-retardant filling layer of inside elasticity has the wire insulating layer, the inside cladding of wire insulating layer has the wire, the outside cladding of the fire-retardant filling layer of inside elasticity has the PP plastics barrel, the lateral wall of PP plastics barrel all bonds there are six first PP plastics body of rod, the lateral wall symmetrical welding of the first PP plastics body of rod has two plate bodys, the lateral wall cladding of PP plastics barrel has the inside thermal-insulated filling layer.

Preferably: first recess has been seted up to the one end of the first PP plastics body of rod, the inside wall diapire of first recess bonds and has the spring, the spring is kept away from the one end of first recess bonds and has the PP plastics plate body, the upper surface of PP plastics plate body bonds and has the second PP plastics body of rod, the lateral wall of the second PP plastics body of rod laminate in the inside wall of first recess, the PP plastics plate body is kept away from the one end of PP plastics plate body bonds and has pottery porcelain fluorubber insulating layer.

Preferably: the outer side wall of the ceramic fluororubber insulating layer is coated with a copper-clad steel shielding layer.

Preferably: six through grooves are uniformly formed in the outer side wall of the ceramic fluororubber insulating layer.

Preferably: the outer side wall of the copper-clad steel shielding layer is coated with a tinned copper wire braid.

Preferably: the outer side wall cladding of tinned copper wire weaving layer has the wearing layer, six second recesses have evenly been seted up to the lateral wall of wearing layer, the inside wall bonding of second recess has the body of rod.

Compared with the prior art, the beneficial effects of the utility model are that:

when the utility model is used for flame-retardant shock absorption, the cable core and the wires can be protected from vibration damage and can be prevented from combustion damage through the internal elastic flame-retardant filling layer, the outer side wall of the internal elastic flame-retardant filling layer is coated with the internal heat-insulating filling layer, heat is blocked, the internal device is protected, the purposes of flame-retardant shock absorption are achieved, the practicability is high, and the safety protection performance is high;

two, the utility model discloses when consolidating the holding power, evenly weld through the lateral wall that sets up the PP plastics barrel has six first PP plastics body of rod, bonds in the both sides of the first PP plastics body of rod and has two plate bodys, prevents the inside of high pressure crushing power cable for the enhancement, reaches the purpose of consolidating the holding power, strengthens the mutual holding power, strengthens the pressure that this device bore.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a left side view structural schematic diagram of the present invention;

FIG. 3 is a schematic view of the structure of area A of FIG. 1 according to the present invention;

fig. 4 is a schematic view of the structure of the area B in fig. 1 according to the present invention.

In the figure: 1. a cable core; 2. a core wire insulating layer; 3. a wire; 4. a wire insulating layer; 5. an inner elastomeric flame retardant filler layer; 6. a PP plastic cylinder; 7. a plate body; 8. an inner insulating filling layer; 9. a ceramic fluororubber insulating layer; 10. a through groove; 11. a copper-clad steel shielding layer; 12. a tinned copper wire braid layer; 13. a wear layer; 14. a first PP plastic rod body; 15. a first groove; 16. a second PP plastic rod body; 17. a PP plastic plate body; 18. a spring; 19. a second groove; 20. a rod body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high pressure resistant heat-resisting fire-retardant power cable, including cable core 1, cable core 1's lateral wall cladding has heart yearn insulating layer 2, heart yearn insulating layer 2's lateral wall cladding has the fire-retardant filling layer of inside elasticity 5, the inside cladding of the fire-retardant filling layer of inside elasticity 5 has wire insulating layer 4, the inside cladding of wire insulating layer 4 has wire 3, the outside cladding of the fire-retardant filling layer of inside elasticity 5 has PP plastics barrel 6, the lateral wall of PP plastics barrel 6 all bonds and has six first PP plastics body of rod 14, the lateral wall symmetric welding of first PP plastics body of rod 14 has two plate bodys 7, the lateral wall cladding of PP plastics barrel 6 has inside thermal-insulated filling layer 8.

In this embodiment, specifically: a first groove 15 is formed at one end of the first PP plastic rod body 14, a spring 18 is bonded on the bottom wall of the inner side wall of the first groove 15, a PP plastic plate body 17 is bonded on one end, away from the first groove 15, of the spring 18, a second PP plastic rod body 16 is bonded on the upper surface of the PP plastic plate body 17, the outer side wall of the second PP plastic rod body 16 is bonded on the inner side wall of the first groove 15, a ceramic fluororubber insulating layer 9 is bonded on one end, away from the PP plastic plate body 17, of the PP plastic plate body 17, the spring 18 is arranged so as to absorb shock of the second PP plastic rod body 16 and protect the cable core 1 and the lead 3 from being damaged, the ceramic fluororubber insulating layer 9 is mainly made of fluororubber, the fluororubber is a synthetic polymer elastomer containing fluorine atoms on carbon atoms of a main chain or a side chain, and the introduction of the fluorine atoms endows the rubber with excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance, then the fluororubber is processed into ceramic, so that the fixing and protection are convenient, and the cable core 1 and the lead 3 can be effectively protected.

In this embodiment, specifically: the outer side wall of the ceramic fluororubber insulating layer 9 is coated with a copper-clad steel shielding layer 11, the main material of the copper-clad steel shielding layer 11 is copper and steel, the copper-clad steel is copper-clad steel wire, namely a composite wire with a copper layer coated on the periphery of the steel wire, the copper-clad steel shielding layer walks along the surface in a high-frequency area by using the skin effect of low-voltage high-frequency signals, so that signals of a certain frequency band can be ensured to be transmitted as long as the thickness of the copper layer reaches a certain range, the copper plays a role in conducting weak-current signals, the steel wire plays a supporting role, and a main body can be protected without influencing the transmission signals when the ceramic fluororubber insulating layer is used.

In this embodiment, specifically: six through grooves 10 have evenly been seted up to ceramic fluororubber insulating layer 9's lateral wall, and through setting up through groove 10, the cortex of ceramic fluororubber insulating layer 9's lateral wall is abolished in convenient putting into logical groove 10 with the instrument.

In this embodiment, specifically: the outer side wall of the copper-clad steel shielding layer 11 is coated with a tinned copper wire braid 12, and the tinned copper wire braid 12 can protect the main body and does not influence transmission signals when in use.

In this embodiment, specifically: the outer side wall of the tinned copper wire braid 12 is coated with the wear-resistant layer 13, the outer side wall of the wear-resistant layer 13 is uniformly provided with six second grooves 19, the inner side wall of each second groove 19 is bonded with a rod body 20, the wear-resistant layer 13 is made of epoxy resin, the epoxy resin is a high-molecular polymer and is a condensation product of epoxy chloropropane and bisphenol A or polyhydric alcohol, and due to the chemical activity of an epoxy group, the epoxy resin can be subjected to ring opening by using various compounds containing active hydrogen, and is cured and crosslinked to form a net structure, so that the tin-plated copper wire braid is a thermosetting resin and is mainly characterized by excellent chemical resistance, particularly alkali resistance and strong paint film adhesive force, particularly metal resistance, better heat resistance and electrical insulation, better paint film color retention and high wear resistance, and is convenient for operators to fasten the rod body 20 by using ropes by arranging the rod body 20 to pull the power cable to move, and convenient for operation.

In this embodiment, specifically: the core wire insulating layer 2 and the lead wire insulating layer 4 are made of resin, the inner elastic flame-retardant filling layer 5 is made of TPU (thermoplastic polyurethane) elastomer rubber, and is mainly divided into polyester type and polyether type, the TPU elastomer rubber HAs wide hardness range (60HA-85HD), is wear-resistant, oil-resistant, transparent, good in elasticity and high in burning point, the flame-retardant TPU can replace soft PVC (polyvinyl chloride) to meet the environmental protection requirements of more and more fields, the inner heat-insulating filling layer 8 is made of high silica fiber, and the high silica fiber can keep good strength and elasticity for a long time at 1000 ℃, and is an effective heat barrier for ultrahigh-temperature heat flow and jet flame and a reliable protection device for personnel facilities; the cable core has low thermal conductivity, has good resistance to high thermal shock, is inert to most chemicals, has good corrosion resistance to compounds, corrosive minerals and weakly alkaline molten alloy at high temperature, can normally and continuously work under the conditions of high heat and strong radiation, and can better protect the cable core 1 and the lead 3 from temperature damage.

In this embodiment, specifically: the core wire insulating layer 2 and the lead wire insulating layer 4 are made of polyolefin, and the polyolefin has small relative density, good chemical resistance and good water resistance; good mechanical strength, electrical insulation and the like; the material of the internal elastic flame-retardant filling layer 5 is polyurethane foam, the polyurethane foam generally improves the flame retardance of the foam by adding a flame retardant to delay combustion, block smoke and even enable a fire catching part to be self-extinguished, and a polyol (namely a reactive flame retardant) containing a flame retardant element can be used as a foam raw material, wherein the flame retardant has one or more of the following functions: can absorb heat at or near the ignition temperature and decompose into non-combustible substances; can react with foam combustion products to generate non-flammable substances; can decompose out the substance which can stop the foam free radical oxidation reaction; the internal heat-insulating filling layer 8 is made of ceramic fibers serving as a main raw material by adopting a wet forming process, and has the properties of high temperature resistance, chemical corrosion resistance, thermal shock resistance, low heat conductivity coefficient, high electric insulation strength, high elastic modulus and the like. It features no asbestos, long fibre, less slag balls, small volume weight, high strength, good elasticity and easy punching and winding. It is suitable for high-temp. heat insulation, heat preservation, sealing, electric insulation, sound absorption and filtration, and can be used as substitute for asbestos product, and is a high-grade light refractory material

Working principle or structure principle, when in use, a core wire insulating layer 2, a lead wire insulating layer 4 and an internal elastic flame-retardant filling layer 5 are arranged between a cable core 1 and a lead wire 3, the insulation is enhanced, the cable core 1 and the lead wire 3 are prevented from being connected electrically, wherein the internal elastic flame-retardant filling layer 5 can protect the cable core 1 and the lead wire 3 from vibration damage and can also prevent combustion damage, the outer side wall of the internal elastic flame-retardant filling layer 5 is wrapped with an internal heat-insulating filling layer 8 to block heat and protect internal devices, six first PP plastic rod bodies 14 are uniformly welded on the outer side wall of a PP plastic cylinder 6, two plate bodies 7 are bonded on two sides of the first PP plastic rod body 14, in order to enhance and prevent the high-pressure damage to the inside of the power cable, a spring 18 is arranged inside the first PP plastic rod body 14, a second PP plastic rod body 16 is bonded above the spring 18, a ceramic fluororubber insulating layer 9 is bonded at one end of the second PP plastic rod body 16, can effectually carry out the shock attenuation, effectual protection power cable, pottery fluorubber insulating layer 9's setting can be better insulate, pottery fluorubber insulating layer 9's lateral wall cladding has copper clad steel shielding layer 11, can be when strengthening the firmware not influence the transmission of signal, copper clad steel shielding layer 11's lateral wall cladding has tinned copper wire weaving layer 12, tinned copper wire weaving layer 12's lateral wall cladding has wearing layer 13, six second recesses 19 have evenly been seted up to wearing layer 13's lateral wall, second recess 19's inside wall bonds there is the body of rod 20, make things convenient for operating personnel to tie the body of rod 20 with the rope, pulling power cable removes, convenient operation.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high pressure resistant heat-resisting fire-retardant power cable, includes cable core (1), its characterized in that: the utility model discloses a cable core, including cable core (1), the lateral wall cladding of cable core (1) has heart yearn insulating layer (2), the lateral wall cladding of heart yearn insulating layer (2) has inside elasticity fire-retardant filling layer (5), the inside cladding of inside elasticity fire-retardant filling layer (5) has wire insulating layer (4), the inside wall cladding of wire insulating layer (4) has wire (3), the outside cladding of inside elasticity fire-retardant filling layer (5) has PP plastics barrel (6), the lateral wall of PP plastics barrel (6) all bonds and has six first PP plastics body of rod (14), the lateral wall symmetrical welding of the first PP plastics body of rod (14) has two plate bodies (7), the lateral wall cladding of PP plastics barrel (6) has inside thermal-insulated filling layer (8).

2. The high voltage resistant, heat resistant and flame retardant power cable of claim 1, wherein: first recess (15) have been seted up to the one end of the first PP plastics body of rod (14), the inside wall diapire of first recess (15) bonds and has spring (18), spring (18) are kept away from the one end of first recess (15) bonds and has PP plastics plate body (17), the upper surface bonding of PP plastics plate body (17) has the second PP plastics body of rod (16), the lateral wall laminating of the second PP plastics body of rod (16) in the inside wall of first recess (15), PP plastics plate body (17) are kept away from the one end bonding of PP plastics plate body (17) has pottery fluorubber insulating layer (9).

3. The high voltage resistant, heat resistant and flame retardant power cable of claim 2, wherein: the outer side wall of the ceramic fluororubber insulating layer (9) is coated with a copper-clad steel shielding layer (11).

4. The high voltage resistant, heat resistant and flame retardant power cable of claim 2, wherein: six through grooves (10) are uniformly formed in the outer side wall of the ceramic fluororubber insulating layer (9).

5. A high voltage resistant, heat resistant and flame retardant power cable according to claim 3, characterized in that: the outer side wall of the copper-clad steel shielding layer (11) is coated with a tinned copper wire braid (12).

6. The high voltage resistant, heat resistant and flame retardant power cable of claim 5, wherein: the outer side wall of the tinned copper wire braid (12) is coated with a wear-resistant layer (13), six second grooves (19) are uniformly formed in the outer side wall of the wear-resistant layer (13), and a rod body (20) is bonded to the inner side wall of each second groove (19).