CN203118621U - Energy-saving round aluminum conductor steel reinforced insulated cable - Google Patents

Abstract

The utility model discloses an energy-saving round aluminum conductor steel reinforced insulated cable. The energy-saving round aluminum conductor steel reinforced insulated cable comprises steel cores and at least two layers and at most four layers of energy-saving round aluminum wires which are concentrically stranded at the periphery of the steel cores; the exterior of the energy-saving round aluminum wires is provided with a shielding layer and an insulating layer successively; the thickness of the shielding layer is in a range of 0.05 to 0.09 cm; and the thickness of the insulating layer is in a range of 0.1 to 0.25 cm. Compared with an ordinary cable, the energy-saving round aluminum conductor steel reinforced insulated cable is advantageous in that the electrical conductivity of a single wire in the plurality of energy-saving hard aluminum wire layers coated at the periphery of the steel cores is 63% IACS and is improved by 2% IACS compared with an ordinary aluminum wire; the saving-energy effect of the energy-saving round aluminum conductor steel reinforced insulated cable is excellent, and line loss of the energy-saving round aluminum conductor steel reinforced insulated cable is decreased more than 3.28 % compared with an ordinary steel core/aluminum wire stranded cable.

Description

An energy-saving steel core round aluminum stranded wire insulated cable

technical field

The utility model relates to an energy-saving steel core round aluminum stranded wire insulated cable.

Background technique

With the rapid development of the national economy, my country's electric power industry has made rapid progress. According to the strategic deployment of "power transmission from west to east, mutual supply between north and south, and national networking", the construction of long-distance and large-capacity transmission lines is imperative. At the same time Higher requirements are also put forward for overhead transmission wires. As a decision to increase transmission capacity, there are mainly two ways to solve it. One is to increase the transmission voltage, and the other is to increase the transmission current. Under the premise of a certain voltage, increase the transmission current density. That is to say, it is very important to increase the transmission capacity per unit area of the conductor. At present, the conductors used in my country's overhead transmission lines are basically still traditional steel-cored aluminum stranded wires. Due to their relatively weak heat resistance, the transmission capacity of the lines is limited to a certain extent.

The role of power construction in the development of the national economy is increasing, and the development of the power industry is related to the overall development of the national economy. With this situation, my country's electric power construction has entered a new level, and it has become an urgent task to comprehensively promote the research and development of new technologies and new products to replace the original products. Compared with ordinary steel-reinforced aluminum stranded wires of the same specification, aluminum alloy cored aluminum stranded wires have lower resistance, larger power transmission capacity, light weight, and higher strength. Based on these advantages, the use of aluminum alloy wires is increasing year by year.

Utility model content

The purpose of the utility model is to provide an energy-saving round aluminum stranded wire insulated cable with a steel core aiming at the defects in the prior art.

The solution adopted to achieve the above purpose is: an energy-saving steel-core round aluminum stranded wire insulated cable, including a steel core and at least two layers and at most four layers of energy-saving round aluminum wire layers concentrically twisted on the periphery of the steel core. A shielding layer and an insulating layer are sequentially arranged on the periphery of the energy-saving round aluminum wire layer; the thickness of the shielding layer is 0.05-0.09cm, and the thickness of the insulating layer is 0.1-0.25cm.

Preferably, said steel core consists of a galvanized steel wire.

Preferably, the steel core is a multi-layer core wire composed of a galvanized steel wire and a plurality of galvanized steel wires concentrically twisted around the galvanized steel wire.

Preferably, the steel core has at most three layers, and adjacent layers are twisted in opposite directions.

Preferably, the energy-saving round aluminum wire layer includes a plurality of single wires of the same size; adjacent layers of the energy-saving round aluminum wire layer are twisted in opposite directions, and the twisting direction of the outermost layer is right.

Beneficial effects of the utility model: energy-saving aluminum stranded wire insulated cables, compared with ordinary cables, the electrical conductivity of the single wire in the multi-layer energy-saving hard aluminum wire layer coated on the periphery is 63% IACS, which is 2% IACS higher than that of ordinary aluminum wires. . The overall energy-saving ACSR insulated cable has a prominent energy-saving effect, reducing line loss by more than 3.28% compared with ordinary ACSR insulated cables.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Detailed ways

As shown in Fig. 1, it is a kind of energy-saving round aluminum stranded wire insulated cable with steel core, which includes a steel core 4 and at least two layers and at most four layers of energy-saving round aluminum wire layers 3 concentrically twisted on the periphery of the steel core 4. The outer periphery of the energy-saving round aluminum wire layer 3 is provided with a shielding layer 2 and an insulating layer 1 in sequence. The thickness of the shielding layer 2 is 0.05-0.09 cm, and the thickness of the insulating layer 1 is 0.1-0.25 cm. The steel core 4 consists of a galvanized steel wire. The steel core 4 is a multi-layer core wire composed of a galvanized steel wire and a plurality of galvanized steel wires concentrically twisted around the galvanized steel wire. The steel core 4 has at most three layers, and adjacent layers are twisted in opposite directions. The energy-saving round aluminum wire layer 3 includes multiple single wires of the same size. Adjacent layers of the energy-saving round aluminum wire layer are twisted in opposite directions, and the outermost layer is twisted to the right. The conductivity of the single wire in the energy-saving round aluminum wire layer is 63% IACS.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. An energy-saving round aluminum stranded wire insulated cable with a steel core, characterized in that it comprises a steel core and at least two, at most four layers of energy-saving round aluminum wire layers concentrically stranded on the periphery of the steel core, the energy-saving round aluminum A shielding layer and an insulating layer are sequentially arranged on the periphery of the line layer; the thickness of the shielding layer is 0.05-0.09cm, and the thickness of the insulating layer is 0.1-0.25cm. 2. An energy-saving round aluminum stranded wire insulated cable with a steel core as claimed in claim 1, wherein the steel core is composed of a galvanized steel wire. 3. An energy-saving round aluminum stranded wire insulated cable with steel core as claimed in claim 1, wherein the steel core is a galvanized steel wire and a plurality of galvanized wires twisted concentrically on the periphery of the galvanized steel wire. Multi-layer core wire composed of zinc steel wire. 4. An energy-saving round aluminum stranded wire insulated cable with steel core as claimed in claim 1, characterized in that the steel core has at most three layers, and adjacent layers are twisted in opposite directions. 5. An energy-saving round aluminum stranded wire insulated cable with steel core as claimed in claim 1, wherein the energy-saving round aluminum wire layer includes a plurality of single wires of the same size; the adjacent layers of the energy-saving round aluminum wire layer The layers are twisted in the opposite direction, and the outermost layer is twisted to the right.

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