CN201045707Y - A non-combustible capacity-enhancing energy-saving cable - Google Patents

Abstract

The utility model relates to a non-ignitable capacity-increased energy-saving electric cable, which is characterized in that the inner portion of the electric cable comprises an earth lead core, a central line core, which are of aluminum or of copper-aluminum combination, and a phase line core, an insulation layer, a packed layer, and a protection layer. The central line core is divided into a plurality of units, and each unit is arranged in the gap of two line cores, the residual gap in the electric cable is provided with the packed layer which is composed of halogen-free inorganic substance material with crystal water, the outer layer of the electric cable is provided with the protection layer, and the outer layers of the earth lead core, the central line core, and the phase line core are evenly provided with the insulation layer. The utility model has the advantages that all combustible insulating layer material quality is evenly covered in the inorganic mineralized packed layer which is ignitable, highly foaming, and highly heat-conductive, and the utility model is not burnt when the circuit is short, and the capability of the line core interface packing filling is increased, thereby the heat dissipation performance of the cable core is relatively excellent, and the transmitting capability is correspondingly increased, and the earth lead core and the central line core are changed into aluminum conductors or copper-aluminum conductors from copper conductors, and the cost is saved.

Description

A non-combustible capacity-enhancing energy-saving cable

technical field

The utility model relates to a cable, in particular to a non-combustible capacity-enhancing and energy-saving cable.

Background technique

Wire and cable is not only a large consumer of copper, with an annual copper consumption of about 3 million tons, but also the largest source of frequent fire accidents. Fires caused by cable fires account for more than 40%. Under the premise of not reducing the quality of cable transmission Aluminum core the neutral wire and the ground wire to reduce the amount of copper used in the cable (about 20%-30%), and change the cable structure to improve the filling quality of the cable so that it is non-combustible under an open flame and does not catch fire when a short circuit occurs, thereby eliminating The safety hazard caused by fire to the cable is the starting point and foothold of the cable with this structure.

Utility model content

The purpose of the utility model is to provide a non-combustible capacity-increasing energy-saving cable to overcome the defects of the existing flame-retardant cables such as flame-delayed cables, poor heat dissipation of conductors, low transmission energy, large consumption of copper resources, and high cable costs.

The purpose of this utility model is to realize through the following technical solutions:

A non-combustible capacity-enhancing energy-saving cable, including a ground core, a neutral core, a phase core, an insulating layer, a filling layer, and a sheath of aluminum or copper-aluminum combination arranged inside the cable; the neutral core is divided into several Each unit is set between the gaps between the two cores; the outer layer of the cable is provided with a sheath; the outer layer of the ground core, the neutral core and the phase core are all provided with an insulating layer; the remaining gaps in the cable There is a filling layer composed of a mixture of various halogen-free inorganic materials that can expand and foam with crystal water; the outer sheath of the cable is a halogen-free or halogen-containing organic material; the phase core is stranded by copper wires. become.

The beneficial effect of the non-combustible capacity-increasing and energy-saving cable described in the utility model is: all combustible insulating layer materials are covered in non-combustible, high-foaming, high-thermal conductivity inorganic mineralized filling layers, and short circuits will not cause combustion; The capacity of the interface filler is increased, so the heat dissipation performance of the cable core is better, which greatly improves the transmission capacity of the ground wire and the neutral wire core, thus making it possible for them to replace copper with aluminum.

Description of drawings

Below according to accompanying drawing, the utility model is described in further detail.

Fig. 1 is a schematic cross-sectional structure diagram of a non-combustible capacity-enhancing energy-saving cable according to an embodiment of the present invention.

In the figure: 1. Ground wire core; 2. Neutral wire core; 3. Phase wire core; 4. Insulation layer; 5. Filling layer; 6. Sheath.

Detailed ways

As shown in Figure 1, the non-combustible capacity-increasing and energy-saving cable described in the embodiment of the present invention includes a ground core 1, a neutral core 2, a phase core 3, an insulating layer 4, a filling layer 5 and a sheath 6, the cable There are four wire cores inside, including three phase wire cores 3 made of copper wires and a ground wire core 1 made of aluminum or aluminum-copper combined twisted wires. The center wire core 2 is divided into four The unit is made of aluminum, and each unit is set between the gaps of the two cores. The ground core 1, the neutral core 2 and the phase core 3 are all provided with an insulating layer 4 on the outside, and the remaining gaps in the cable are set There is a halogen-free inorganic material filling layer 5 with crystal water, which has strong flame retardancy and thermal conductivity, and the outer sheath 6 of the cable is a halogen-free or halogen-containing organic material.

In the non-combustible capacity-increasing energy-saving cable described in the above embodiments of the present invention, all materials of the flammable insulating layer are placed in the non-flammable, high-foaming, high-thermal conductivity inorganic mineralized filling layer, and any short circuit between phases will not cause the cable to burn ;The interface between the circular wire cores contains a large amount of filler, and the released crystal water capacity increases, which is beneficial to the cooling and self-extinguishing of the burning material; The thermal conductivity of the conductive material is increased by 10 times, and the outer diameter is 2mm-3mm larger than the general structural size, so the steady-state current-carrying capacity of the phase core is also increased by about 15%, leaving room for future capacity expansion.

Claims (2)

1. fire-retardant type volume increasing and energy saving cable is characterized in that: comprise the aluminium that is located at cable inside or ground core, middle core, phase core, insulating barrier, packed layer and the sheath of copper aluminium combination; Core is divided into several unit in described, and each unit is located between the space of two cores; Residue space in the cable is provided with the packed layer that is made of the Halogen inorganic material that has the crystallization water; Cable outer layer is provided with sheath; Described ground core, middle core and phase core skin are equipped with insulating barrier.

2. fire-retardant type volume increasing and energy saving cable according to claim 1 is characterized in that: described phase core forms by copper cash is stranded, and described center line ground wire is aluminium or stranded the forming of copper aluminium combination.

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