Preparation method of aluminum alloy cable

Abstract

The invention discloses a preparation method of an aluminum alloy cable, which effectively improves the shear resistance of the cable and ensures certain flexibility by preparing a plurality of aluminum alloy sheaths which can be matched with one another and injecting fillers with shear hardening characteristics. The method comprises the following production and assembly processes: stranding conductors to form stranded wires, and extruding an insulating layer to prepare a cable core; manufacturing a plurality of aluminum alloy sheaths in a machining manner; manufacturing a lantern ring according to the size of the outer wall of the aluminum alloy sheath; tightly arranging a plurality of cable cores, and inserting limiting rods among the cable cores to form a cable core group; sleeving thelantern ring on the outer side of the aluminum alloy sheath to enable the lantern ring to completely wrap the groove; injecting a filler with shear hardening characteristics into the groove in the outer side of the aluminum alloy sheath; sleeving the assembled cable core with the aluminum alloy sheath, then sleeving the cable core with the other multiple aluminum alloy sheaths in sequence, and clamping the aluminum alloy sheaths together in an extrusion mode.

Description

technical field [0001] The invention relates to the field of cable production and manufacturing, in particular to a method for preparing an aluminum alloy cable. Background technique [0002] A cable is a wire made of one or more mutually insulated conductors and an outer insulating layer that transmits power or information from one place to another. Cables are generally erected at high altitude or buried underground for long-distance high-voltage power transmission. Usually, each cable is responsible for the power transmission of multiple lines, which not only has high transmission efficiency, but also has low cost and good stability. [0003] Due to the long-term contact with the air, the insulation protection layer of the cable erected at high altitude is easy to reduce its strength due to oxidation. When encountering bad weather or other external forces, the cable is prone to breakage, resulting in disconnection of internal lines, causing economic losses and safety probl...

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Problems solved by technology

[0003] Due to the long-term contact with the air, the insulation protection layer of the cable erected at high altitude is easy to reduce its strength due to oxidation. When encountering bad weather or other external forces, the cable is prone to breakage, resulting in disconnection of internal lines, causing economic losses and safety problems; Cables buried underground will be damaged due to construction or some illegal activities, especially during excavator construction. Without prior knowledge of the distribution of underground cables, it is very easy to cause the consequences of digging and breaking the cables, resulting in power system damage. paralysis

[0004] At present, most of the aluminum alloy cables used for shear resistance are equipped with metal sleeves (similar to the metal sleeves outside the explosion-proof hose in the bathroom) outside the cables, which can resist the damage of some external forces, but the outer wall of the metal sleeve is thinner. When subjected to severe impact, it will be damaged and deformed, and it is difficult to rebound, which will cause the sleeve to squeeze the inner cable core, causing damage to the cable core

[0005] Once the cable is damaged, it will not only cause huge economic losses and bring great inconvenience to people's lives, but also the maintenance is difficult and the cycle is long. The existing ordinary cables have poor shear resistance and are easily broken by external forces; the existing aluminum The shear force of the alloy cable has been greatly improved, which can cope with most situations and reduce the probability of cable breakage, but it still cannot provide effective protection when encountering excavators or other large machinery

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