Novel environment-friendly composite insulated high-flame-retardant flexible power cable

Abstract

The utility model relates to the technical field of wires and cables, and discloses a novel environment-friendly composite insulated high-flame-retardant flexible power cable, which comprises five conductor wire cores, a fireproof layer is wrapped outside each conductor wire core, an insulating layer is wrapped outside each fireproof layer, a fireproof inner protective layer is integrally wrapped outside the five conductor wire cores, and an outer protective layer is wrapped outside each fireproof inner protective layer. The space between the fireproof inner protection layer and the five conductor wire cores is filled with an environment-friendly material. The outer side of the fireproof inner protective layer is wrapped by the waterproof layer, the outer side of the waterproof layer is wrapped by the fireproof outer protective layer, the outer side of the fireproof outer protective layer is wrapped by the buffer layer, the outer side of the buffer layer is wrapped by the metal armor layer, and the outer sheath is arranged on the outer side of the metal armor layer. According to the utility model, the structure can be kept complete under the condition of fire, fire spreading is reduced, the safety is improved, meanwhile, low smoke concentration and high light transmittance caused by combustion can be ensured, the release of poisonous gas is reduced, and safe evacuation of personnel and rapid extinguishment of the fire are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric wire and cable, specifically to a novel environment-friendly composite insulation high flame retardant power flexible cable. BACKGROUND

[0002] Cable is a kind of wire for transmitting electric energy or signal, usually composed of multiple conductors, and wrapped by insulating material to ensure safe and effective electric energy transmission. In recent years, people have higher and higher requirements for electrical safety and reliability in some important engineering facilities, and people consider the safety and reliability of power distribution design as the first economic benefit, and traditional power cable cannot meet such requirements.

[0003] Environment-friendly cable material refers to the material used in cable manufacturing that meets environmental protection standards and requirements, with low toxicity, easy recyclability, renewability, no environmental pollution, weather resistance and performance stability.

[0004] Insulation high flame retardant cable is a special type of cable, which not only has the conductivity of ordinary cable, but also has excellent flame retardant properties, which can slow down the spread of fire and protect the line safety.

[0005] Traditional PVC electric wire and cable are easy to decompose and release a large amount of toxic and corrosive gas when fire occurs, and produce a large amount of toxic smoke, causing heavy loss of life and property. Therefore, the development of cable with good mechanical properties and flame retardance and low smoke characteristics has become an important technology. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a novel environment-friendly composite insulation high flame retardant power flexible cable to solve the problem of toxic gas release in cable fire in the above background technology.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a novel environment-friendly composite insulation high flame retardant power flexible cable, comprising five conductor cores, characterized in that:

[0008] The conductor cores are wrapped with a fire-resistant layer on the outside, the fire-resistant layer is wrapped with an insulating layer on the outside, the five conductor cores are wrapped with a fireproof inner protective layer on the outside as a whole, and the fireproof inner protective layer and the five conductor cores are filled with environment-friendly material;

[0009] The fireproof inner protective layer is wrapped with a waterproof layer on the outside, the waterproof layer is wrapped with a fireproof outer protective layer on the outside, the fireproof outer protective layer is wrapped with a buffer layer on the outside, the buffer layer is wrapped with a metal armor layer on the outside, and the metal armor layer is provided with an outer sheath on the outside.

[0010] Preferably, the metal armor layer is a copper wire braided structure.

[0011] Preferably, four of the five conductor cores have the same cross-sectional diameter.

[0012] Preferably, the fire-resistant layer is a combination of ceramifiable fireproof fire-resistant silicone rubber and synthetic mica tape, and the ceramifiable fireproof fire-resistant silicone rubber is covered outside the synthetic mica tape.

[0013] Preferably, the fireproof inner protective layer is composed of semi-conductive elastic material and semi-conductive water-blocking expansion tape; the waterproof layer is composed of a waterproof combination layer of asphalt compound, polyvinyl chloride tape and impregnated crimped paper tape; and the fireproof outer protective layer is made of low-smoke halogen-free flame-retardant polyolefin material.

[0014] Preferably, the environmentally friendly filling material is composed of roving made of waste polyester cotton and dispersed phosphorus-nitrogen aqueous flame-retardant powder, and the environmentally friendly filling material is coated with a flame-retardant glue layer and a powdery flame-retardant layer on the outside.

[0015] Compared with the prior art, the utility model has the advantages that: 1. The combination of ceramifiable fireproof fire-resistant silicone rubber and synthetic mica tape of the fire-resistant layer, and the low-smoke halogen-free flame-retardant polyolefin material of the fireproof inner protective layer and the fireproof outer protective layer make the cable maintain structural integrity in case of fire, reduce the spread of fire, improve safety, and at the same time, ensure that the smoke concentration produced by burning is low, the light transmittance is high, the release of toxic gas is reduced, and it is beneficial to the safe evacuation of personnel and the rapid extinguishing of fire.

[0016] 2. The environmentally friendly filling material is composed of roving made of waste polyester cotton and phosphorus-nitrogen aqueous flame-retardant powder, which reduces the burden on the environment, realizes the reuse of waste, and meets the requirements of sustainable development.

[0017] 3. The waterproof layer of the utility model is composed of a waterproof combination layer of asphalt compound, polyvinyl chloride tape and impregnated crimped paper tape, which effectively prevents water from entering the inside of the cable, protects the cable from the influence of a humid environment, and provides additional mechanical protection through the metal armor layer and the buffer layer, so that the cable can resist physical damage from the outside and prolong the service life.

[0018] 4. The utility model is a five-core cable, and the four conductor cores have the same cross-sectional diameter, which helps to maintain the symmetry of the cable and balance the distribution of electric energy, improve the stability and transmission efficiency of the cable, and at the same time, the ground wire in the five-core cable provides additional safety grounding, which helps to prevent electrical fires. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] In the figure: 1, conductor core; 2, fireproof layer; 3, insulation layer; 4, fireproof inner protective layer; 5, environmental protection material; 6, waterproof layer; 7, fireproof outer protective layer; 8, buffer layer; 9, metal armored layer; 10, outer sheath. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figure 1 The utility model provides a technical scheme: a novel environmental protection composite type insulation high flame -retardant power flexible cable, including five conductor cores 1, the conductor core 1 outside is all wrapped with fireproof layer 2, the fireproof layer 2 outside is wrapped with insulation layer 3, five conductor cores 1 outside whole wrapped with fireproof inner protective layer 4, fireproof inner protective layer 4 and five conductor cores 1 between fill with environmental protection material 5;

[0023] Fireproof inner protective layer 4 outside is wrapped with waterproof layer 6, and the waterproof layer 6 outside is wrapped with fireproof outer protective layer 7, and the fireproof outer protective layer 7 outside is wrapped with buffer layer 8, and the buffer layer 8 outside is wrapped with metal armored layer 9, and the metal armored layer 9 outside is provided with outer sheath 10;

[0024] Metal armored layer 9 is copper wire braided structure;

[0025] Five conductor cores 1 have four same cross section diameters;

[0026] Fireproof layer 2 is the combination of ceramicized fireproof fireproof silicone rubber and synthetic mica tape, and the ceramicized fireproof fireproof silicone rubber is covered outside the synthetic mica tape;

[0027] Fireproof inner protective layer 4 is composed of semi-conductive elastic material and semi-conductive water-blocking expansion tape;Waterproof layer 6 is composed of waterproof combination layer of asphalt compound, polyvinyl chloride tape and impregnated crinkled paper tape;Fireproof outer protective layer 7 adopts low-smoke halogen-free flame-retardant polyolefin material;

[0028] Environmental protection filling material 5 is composed of roving made of waste polyester cotton and dispersed phosphorus-nitrogen aqueous flame-retardant powder, and the environmental protection filling material 5 is coated with flame-retardant glue layer and powder flame-retardant layer outside.

[0029] Working principle:

[0030] The cable uses the roving made of waste polyester cotton as the filling material 5, which is derived from waste clothes and quilts, realizes the recycling of waste, reduces the influence on the environment, and meanwhile, the fireproof outer sheath 7 of the cable uses halogen-free low-smoke flame-retardant material, which will not produce toxic halogen gas when burning, avoids the carcinogenic substance "dioxin" produced by the traditional PVC cable when burning, and reduces the harm to the environment and human health;

[0031] The fireproof layer 2 of the cable is composed of ceramicized fireproof and refractory silicone rubber and synthetic mica tape, which can form a hard ceramic layer at high temperature, effectively insulate the fire source and protect the cable from the influence of fire; The phosphorus-nitrogen aqueous flame-retardant powder is dispersed in the environmentally friendly filling material 5, and is coated with a flame-retardant glue layer and a powdery flame-retardant layer, which decomposes into water and steam at high temperature of flame, reduces the temperature and discharges oxygen, and at the same time, the residual material forms a heat shield, improving the flame-retardant and fireproof ability of the cable; The low-smoke halogen-free flame-retardant polyolefin material used in the fireproof outer sheath 7 of the cable has low smoke concentration and high light transmittance when burning, which is beneficial to personnel evacuation and fire extinguishing work; The metal armor layer 9 is a copper wire braided structure, and the high melting point of the copper wire provides additional flame-retardant protection;

[0032] The cable is a five-core cable, and the ground wire in the five-core cable provides additional safety grounding, which helps to prevent electrical fires, and in the case of fire, the flame-retardant property can delay the spread of the fire, which saves valuable time for personnel evacuation and fire fighting.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel environmentally friendly composite insulation high flame-retardant power soft cable, comprising five conductor cores (1), characterized in that: The conductor core (1) is wrapped with a fire-resistant layer (2) on the outside, and the fire-resistant layer (2) is wrapped with an insulation layer (3) on the outside, and the five conductor cores (1) are wrapped with a fireproof inner protective layer (4) on the outside, and the fireproof inner protective layer (4) and the five conductor cores (1) are filled with an environmentally friendly material (5); The fireproof inner protective layer (4) is wrapped with a waterproof layer (6) on the outside, the waterproof layer (6) is wrapped with a fireproof outer protective layer (7) on the outside, the fireproof outer protective layer (7) is wrapped with a buffer layer (8) on the outside, the buffer layer (8) is wrapped with a metal armor layer (9) on the outside, and the metal armor layer (9) is provided with an outer sheath (10) on the outside.

2. A new environment-friendly composite type insulated high flame retardant power soft cable as claimed in claim 1, wherein: The metal armor layer (9) is a copper wire braided structure.

3. A new environment-friendly composite type insulated high flame retardant power soft cable as claimed in claim 1, wherein: Four of the five conductor cores (1) have the same cross-sectional diameter.

4. A new environment-friendly composite type insulated high flame retardant power soft cable as claimed in claim 1, wherein: The fire-resistant layer (2) is a combination of ceramicized fire-resistant silicone rubber and synthetic mica tape, with ceramicized fire-resistant silicone rubber covering the outside of the synthetic mica tape.

5. A new environment-friendly composite type insulated high flame retardant power soft cable as claimed in claim 1, wherein: The fireproof inner protective layer (4) is composed of semi-conductive elastic material and semi-conductive water-resistant swelling tape; the waterproof layer (6) is composed of a waterproof combination layer of asphalt compound, polyvinyl chloride tape and impregnated crumpled paper tape; the fireproof outer protective layer (7) is made of low-smoke halogen-free flame-retardant polyolefin material.

6. A new environment-friendly composite type insulated high flame retardant power soft cable as claimed in claim 1, wherein: The environmentally friendly material (5) is composed of coarse yarn made of waste polyester cotton and dispersed phosphorus-nitrogen aqueous flame-retardant powder, and the environmentally friendly material (5) is coated with a flame-retardant glue layer and a powdery flame-retardant layer on the outside.

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