CN104616776A - Compressive and tensile cable for switch cabinet - Google Patents

Abstract

The invention discloses a compressive and tensile cable for a switchgear, which includes a cable core, the cable core includes a rice-shaped skeleton, and the rice-shaped skeleton divides the cable core into eight cavities, and the cavity contains a Control wire core or inner skeleton, in which the inner skeleton is wrapped with a power wire core; the control wire core includes two parallel copper cores wound by multiple strands of tinned copper wires, and the copper cores are wrapped with aluminum foil heat insulation wrapping in turn Layer, glass fiber braiding layer and polyester silk braiding layer; the power core includes a central conductor twisted by fiber rope and multiple strands of galvanized copper wire bundles, and the central conductor is wrapped with a carbon fiber braiding layer; the cable core is wound with an insulating layer in turn , armor layer and fire sheath. The rice-shaped frame and inner frame used in the present invention play a good role in supporting and protecting the cable core, enhance the compression resistance and tensile resistance of the cable, and ensure that various heat insulation layers, fireproof layers, and armor in the cable The coating layer and insulating layer can better play their functions, ensuring the heat insulation, fire resistance and insulation performance of the cable.

Description

A compressive and tensile cable for switchgear

Technical field:

The present invention mainly relates to the field of cables, in particular to a compressive and tensile cable for switch cabinets.

Background technique:

The traditional shielded cable for switchgear has a copper conductor as the inner conductor and a single-layer PVC sheath as the sheath. Because the structure of this cable is relatively simple, its compressive and tensile properties are not good. In this case, the cable is easy to If it is crushed or pulled, it will affect the heat insulation, fire prevention, insulation and other properties of the cable, and affect the service life of the cable.

Invention content:

The purpose of the present invention is to make up for the defects of the prior art, and provide a compressive and tensile cable for switch cabinets, which has good tensile and compressive effects and long service life.

The present invention is achieved through the following technical solutions:

A compressive and tensile cable for switchgear, characterized in that: it includes a cable core, and the cable core includes a rice-shaped skeleton, and the rice-shaped skeleton divides the cable core into eight cavities, which are located in the left and right directions. There are control wire cores in the four cavities, and a triangular inner skeleton is placed in the four cavities located at the upper and lower positions, and the power wire core is wrapped in the inner skeleton;

The control wire core includes two parallel copper cores wound by multiple strands of tinned copper wires, and the copper cores are wound with aluminum foil heat insulation wrapping layer, glass fiber braiding layer and polyester filament braiding layer in sequence;

The power core includes a central conductor twisted by a fiber rope and a plurality of galvanized copper wire bundles, and the central conductor is wrapped with a carbon fiber braided layer;

An insulation layer, an armor layer and a fireproof sheath are wound around the cable core in sequence.

A compressive and tensile cable for a switchgear, characterized in that: the insulating layer is an insulating layer of EPDM rubber.

A compressive and tensile cable for a switchgear, characterized in that: the armor layer is a double-layer galvanized steel tape armor layer.

Advantages of the present invention:

The rice-shaped frame and inner frame used in the present invention play a good role in supporting and protecting the cable core, enhance the compression resistance and tensile resistance of the cable, and ensure that various heat insulation layers, fireproof layers, and armor in the cable The coating layer and insulating layer can better play their functions, ensuring the heat insulation, fire resistance, and insulation performance of the cable.

Description of drawings:

Figure 1 is a schematic cross-sectional view of the present invention.

Detailed ways:

See attached picture.

A compressive and tensile cable for switchgear, including a cable core, the cable core includes a rice-shaped skeleton 1, and the rice-shaped skeleton 1 divides the cable core into eight cavities, which are located in four chambers in the left and right directions. A control wire core 2 is contained in one cavity, a triangular inner skeleton 3 is placed in the four cavities located at the upper and lower positions, and a power wire core 4 is wrapped in the inner skeleton 3;

The control wire core 2 includes two parallel copper cores 5 wound by multiple strands of tinned copper wires. The copper cores 5 are wound with aluminum foil heat insulation wrapping layer 6, glass fiber braiding layer 7 and polyester filaments in sequence. Braid 8;

The power core 4 includes a central conductor 9 twisted by a fiber rope and a plurality of galvanized copper wire bundles, and a carbon fiber braid 10 is wound around the central conductor 9;

The cable core is wound with an insulating layer 11 , an armor layer 12 and a fireproof sheath 13 in sequence.

The insulating layer 11 is an insulating layer of EPDM rubber.

The armor layer 12 is a double-layer galvanized steel tape armor layer.

Claims (3)

1. the resistance to compression tensile cable for switch cubicle, it is characterized in that: include cable core, cable core includes a meter font skeleton, cable core is divided into eight cavitys by described rice font skeleton, four cavitys being arranged in orientation, left and right are surrounded by control conductor, four cavitys being arranged in upper and lower orientation are equipped with leg-of-mutton inner frame, are surrounded by electric power core in inner frame;

Described control conductor includes two arranged side by side copper cores be entwined by multiply tinned copper wire, and copper core is wound with the heat insulation lapping layer of aluminium foil, fiberglass braided layer and dacron thread braid outward successively;

Described electric power core comprises the center conductor twisted by cordage and multiply TC wire harness, is wound with carbon fiber wire braid outside center conductor;

Described cable core is wound with insulating barrier, armour and fireproof outward successively.

2. a kind of resistance to compression tensile cable for switch cubicle according to claim 1, is characterized in that: described insulating barrier is ethylene propylene diene rubber insulating barrier.

3. a kind of resistance to compression tensile cable for switch cubicle according to claim 1, is characterized in that: described armour is double-deck zinc-plated steel-tape armouring layer.