CN219180213U

CN219180213U - High temperature resistant control shielded cable

Info

Publication number: CN219180213U
Application number: CN202223400941.3U
Authority: CN
Inventors: 王星
Original assignee: Shanghai Boxin Cable Technology Co ltd
Current assignee: Shanghai Boxin Cable Technology Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-06-13
Anticipated expiration: 2032-12-19

Abstract

The utility model relates to a high temperature resistant control shielded cable, and belongs to the technical field of cables. The utility model mainly aims at the problems that some cables which are reused at present are existing, the wires of some cables are broken due to the back and forth movement, and the wires are continuously ignited in the electrifying process, so that heat is continuously generated, and the wires are continuously fused by accumulation of the heat, therefore, the utility model designs a high temperature resistant control shielded cable, and provides the following technical scheme: a high temperature resistant control shielded cable comprises a copper core and a polyvinyl chloride insulating sleeve. The utility model provides a through copper core, high fire-retardant area, aluminium foil shielding layer, braided shield layer and the design of polyvinyl chloride insulating boot, the copper core has good electric conduction, heat conductivility, and the high fire-retardant area can make the burning of material delay or extinguish, reaches fire-retardant purpose, and the safe operation of electric wire is ensured in the effect of braided shield layer, and the fire resistance of polyvinyl chloride insulating boot is good for the operation that the cable can be safe.

Description

High temperature resistant control shielded cable

Technical Field

The utility model relates to the technical field of cables, in particular to a high temperature resistant shielded cable.

Background

The control shielding cable is suitable for industrial and mining enterprises, energy traffic departments, control and protection circuits with alternating current rated voltage below 450/750V and the like. While some of the cables reused at present have part of the wires of the cables broken due to the back and forth movement, and the wires are continuously ignited in the electrifying process, heat is continuously generated, and the heat is continuously accumulated to finally fuse the wires, so the high temperature resistant control shielding cable is designed.

Disclosure of Invention

The utility model aims at solving the problems that some cables reused at present have wires of part of cables broken due to back and forth movement, and the wires are continuously ignited in the electrifying process, so that heat is continuously generated, and the heat is continuously accumulated to finally fuse the wires, and provides a high temperature resistant shielded cable.

The technical scheme of the utility model is as follows: the utility model provides a high temperature resistant control shielded cable, includes copper core and polyvinyl chloride insulating boot, the surface of copper core is connected with the polyvinyl chloride insulating boot, the surface of polyvinyl chloride insulating boot is connected with the fixed cover of reinforcement rubber, a plurality of the surface connection of the fixed cover of reinforcement rubber has high fire-retardant area, the inside packing in high fire-retardant area has the filling layer.

Preferably, the outer surface of the high flame retardant tape is connected with a pp inner cushion layer.

Preferably, the outer surface of the pp inner cushion layer is connected with an aluminum foil shielding layer.

Preferably, the outer surface of the aluminum foil shielding layer is connected with a woven shielding layer.

Preferably, the outer surface of the braided shielding layer is connected with an outer protective sleeve.

Preferably, galvanized steel wires are arranged between the outer protective sleeve and the woven shielding layer.

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

(1): according to the cable, through the design of the copper core, the high flame retardant band, the aluminum foil shielding layer, the woven shielding layer and the polyvinyl chloride insulating sleeve, the copper core has good electric conduction, heat conduction, corrosion resistance and processability, the high flame retardant band can enable burning of materials to be delayed or extinguished, the purpose of flame retardance is achieved, the aluminum foil shielding layer plays a role of resisting electromagnetic interference shielding layer and further improves electric field distribution, the woven shielding layer plays a role of protecting insulation from or being less damaged by various light, heat, moisture, low temperature, acid-base gas and the like and external mechanical force, safe operation of the cable is ensured, the fiber woven layer is often in the middle of the protective layer, so that the tearing resistance strength of the protective layer is enhanced, for example, the reinforced protective sleeve is the fiber woven layer such as cotton yarn and hemp is added in the middle of the rubber or plastic protective layer, so that the strength of the protective layer is improved, the ductility of the cable can be increased, the cable is more resistant to high temperature, the polyvinyl chloride insulating sleeve is wear resistant, corrosion resistance and good flame retardance, the fire cannot spread, and after leaving open fire, smoke is automatically generated, and the cable can be safely operated.

Drawings

FIG. 1 is a schematic diagram of a high temperature resistant shielded cable;

fig. 2 is a front view of fig. 1.

Reference numerals: 1. a copper core; 2. reinforcing a rubber fixing sleeve; 3. a filling layer; 4. a high flame retardant tape; 5. pp inner cushion layer; 6. an aluminum foil shielding layer; 7. braiding a shielding layer; 8. galvanized steel wire; 9. an outer protective sleeve; 10. a polyvinyl chloride insulating sleeve.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Examples

As shown in fig. 1-2, the high temperature resistant control shielded cable provided by the utility model comprises a copper core 1 and a polyvinyl chloride insulating sleeve 10, wherein the polyvinyl chloride insulating sleeve 10 is high in strength, wear-resistant, corrosion-resistant and flame-retardant, does not spread when meeting fire, is automatically extinguished after leaving open fire, and does not generate dense smoke, the copper core 1 is made of copper (copper alloy taking zinc as a main alloy element is called brass and has good electric conduction, heat conduction, corrosion resistance and processability), the outer surface of the copper core 1 is connected with the polyvinyl chloride insulating sleeve 10, the outer surface of the polyvinyl chloride insulating sleeve 10 is connected with a reinforced rubber fixing sleeve 2, the reinforced rubber fixing sleeve 2 is mainly made of three main materials of a metal protective layer, a rubber plastic protective layer and a combined protective layer, and the reinforced rubber fixing sleeve 2 is used as a protective covering layer coated on cable insulation to prevent the insulating layer from being wet, mechanically damaged, light and chemical aggressive media and the like, the outer surfaces of the reinforcing rubber fixing sleeves 2 are connected with high flame retardant belts 4, the materials of the high flame retardant belts 4 are mainly divided into halogen-containing flame retardant materials and halogen-free flame retardant materials, and as hydrogen halide is decomposed and released when the reinforcing rubber fixing sleeves are burnt and heated, the hydrogen halide can capture active free radicals HO so as to delay or extinguish the combustion of the materials and achieve the aim of flame retardance, the interiors of the high flame retardant belts 4 are filled with filling layers 3, the materials of the filling layers 3 are generally PP reticular films, also called PP belts, the filling ropes also have the effect that a large gap is necessarily formed among all insulated wire cores, in order to ensure that the outer diameters of the formed cables are relatively round so as to be beneficial to taping and extruding the sheaths, and also to ensure that the interiors of the cables are firm, the gaps are necessarily filled with the materials, although the filling is an auxiliary structure, but also necessary, particularly for cables with large wire sections, the pp inner cushion layer 5 is connected to the outer surface of the high flame retardant tape 4, and the pp inner cushion layer 5 is used for preventing the insulating layer from contacting with water, air or other objects, and preventing the insulating layer from being affected with damp and mechanical damage. The outer surface of pp inner cushion layer 5 is connected with aluminum foil shielding layer 6, and the composite material of aluminum foil shielding layer 6 for the electromagnetic interference resisting shielding layer in the electric wire and cable is called cable shielding film or aluminum foil Mylar belt, which is a measure for improving electric field distribution. The outer surface of the aluminum foil shielding layer 6 is connected with a braiding shielding layer 7, the braiding shielding layer 7 is used for protecting insulation from being corroded by various light, heat, tide, low temperature, acid-base gas and the like and being damaged by external mechanical force, safe operation of the electric wire is ensured, the fiber braiding layer is often arranged in the middle of the protective layer, and accordingly tearing strength of the protective layer is enhanced, for example, a reinforced sheath is formed by adding cotton yarn, hemp and other fiber braiding layers in the middle of a rubber or plastic protective layer, so that strength of the protective layer is improved. The outer surface of the braided shielding layer 7 is connected with an outer protective sleeve 9, a galvanized steel wire 8 is arranged between the outer protective sleeve 9 and the braided shielding layer 7, and the galvanized steel wire 8 is formed by adopting high-quality low-carbon steel through stretching, pickling, rust removal, high-temperature annealing, hot galvanizing and cooling. Galvanized iron wires have excellent toughness and elasticity, which act to increase the ductility of the cable. The outer sheath 9 is a pellet prepared by mixing and kneading polyvinyl chloride as a base resin, and adding an inorganic filler such as a stabilizer, a plasticizer, and calcium carbonate, an additive such as an auxiliary agent, and a lubricant, and extruding the mixture. The polyethylene can be formulated for use in a variety of environments and applications. It has low cost, good flexibility, relatively firm and fireproof/oil-proof material. The protective layer is used for protecting the protective layer and preventing the protective layer from being damaged in the laying process. The outer coating, which consists of a plastic sheath, prevents the armor layer from being corroded during operation.

The working principle of the embodiment is as follows: when the high-temperature-resistant control shielding cable is required to be manufactured, the outer surfaces of the four groups of high-flame-retardant belts 4 are bonded and connected 11, the outer surfaces of the 11 are bonded and connected with the reinforced rubber fixing sleeve 2, the outer surfaces of the four groups of reinforced rubber fixing sleeve 2 are bonded and connected with the high-flame-retardant belts 4, the reinforced rubber fixing sleeve 2 of the four groups is directly filled with the filling layer 3, the outer surfaces of the high-flame-retardant belts 4 are bonded and connected with the pp inner cushion layer 5, the outer surfaces of the pp inner cushion layer 5 are bonded and connected with the aluminum foil shielding layer 6, the outer surfaces of the aluminum foil shielding layer 6 are bonded and connected with the woven shielding layer 7, the outer surface of the woven shielding layer 7 is fixedly connected with the galvanized steel wires 8, and finally the outer surfaces of the galvanized steel wires 8 are bonded and connected with the outer protective sleeve 9.

The exemplary implementation of the solution proposed in the present application has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various combinations of the technical features and structures proposed in the present application can be made without departing from the scope of protection of the present application, which is defined by the appended claims.

Claims

1. The utility model provides a high temperature resistant control shielded cable, includes copper core (1) and polyvinyl chloride insulating boot (10), its characterized in that: the outer surface of copper core (1) is connected with polyvinyl chloride insulating sleeve (10), the outer surface of polyvinyl chloride insulating sleeve (10) is connected with consolidates rubber fixed cover (2), and a plurality of the outer surface of consolidate rubber fixed cover (2) is connected with high fire-retardant area (4), the inside of high fire-retardant area (4) is filled with filling layer (3).

2. The high temperature resistant shielded cable according to claim 1, wherein the outer surface of the high flame retardant tape (4) is connected with a pp inner pad layer (5).

3. The high temperature resistant shielded cable according to claim 2, wherein an aluminum foil shielding layer (6) is connected to an outer surface of the pp inner cushion layer (5).

4. A high temperature resistant shielded cable according to claim 3, characterized in that the outer surface of the aluminium foil shielding layer (6) is connected with a braided shielding layer (7).

5. A high temperature resistant shielded cable according to claim 4, wherein the outer surface of the braided shield (7) is connected with an outer protective sheath (9).

6. A high temperature resistant shielded cable according to claim 5, characterized in that a galvanized steel wire (8) is arranged between the outer protective sheath (9) and the braided shield (7).