CN2914260Y

CN2914260Y - Conducting wire for long-span high-tension transmitting and transforming circuit

Info

Publication number: CN2914260Y
Application number: CN 200620091702
Authority: CN
Inventors: 宋玉春; 王洪丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-20
Filing date: 2006-06-20
Publication date: 2007-06-20
Anticipated expiration: 2016-06-20

Abstract

The utility model discloses a large span wire used in high voltage power transmission line, comprising a core wire, and a multi-pair wire is hinged outside the core wire, which is characterized in that: the inner core of the core wire is a steel line (1), the periphery of the steel line (1) is wrapped with a copper layer (2); the inner core of the wire is an aluminum wire (3), and the periphery of the aluminum wire (3) is wrapped with a copper layer (4). The current mainly transmits on the surface layer (copper layer) of the wire, thereby the utility model not only has excellent conductive properties, which can reduce the power loss on the line, but also has the advantages of anti-corrosion, small density of aluminum wire, light weight, as well as low cost; the tensile strength of the utility model is improved significantly, which can evidently increase the span of tower, thus reducing the erection cost of the lines, enhancing the service life of the lines, and improving the reliability of the lines.

Description

Conducting wire for high-span high voltage electric transmission and transformation circuitry

Technical field:

The utility model relates to a kind of conducting wire for high-span high voltage electric transmission and transformation circuitry, and especially a kind of have good conductivity, in light weight, a conducting wire for high-span high voltage electric transmission and transformation circuitry that cost is low.

Background technology:

At present, the transmission line and the overhead ground wire that are applied to little span high voltage power transmission and transforming all are to adopt aluminium stranded conductor or steel reinforced aluminium conductor basically, aluminium stranded conductor is with the hinge joint of multiply fine aluminium lead together, and steel reinforced aluminium conductor is to be heart yearn with the steel wire, and the aluminum conductor of multiply hinge joint is distributed in the periphery of heart yearn.Though aluminum conductor self cost is low, because shortcoming such as aluminum conductor exists that conductance is low, welding performance is poor, easily oxidation of surface, contact resistance are big, cause the electrical loss of whole circuit big, power transmission and transformation are of poor quality, reliability is low; The tensile strength of aluminum conductor is lower simultaneously, although steel core can improve the tensile strength of aluminium stranded conductor, has but strengthened the weight of whole circuit, makes the shaft tower span of the construction of line little, has improved the cost that sets up of circuit.The high voltage power transmission and transforming circuit that is applied to large span, heavy icing area and coastal area then must adopt the steel core aluminium alloy stranded conductor with anti-corrosion function, and its cost is higher.

Summary of the invention:

The utility model to be that the loss of existing in prior technology line electricity is big, reliability is low in order solving, to set up the high problem of cost, a kind of good conductivity that promptly has is provided, has conducting wire for high-span high voltage electric transmission and transformation circuitry anticorrosion, in light weight, that set up low cost and other advantages again.

Technical solution of the present utility model is: a kind of conducting wire for high-span high voltage electric transmission and transformation circuitry, heart yearn is arranged, and the stranded conductor of hinge joint is arranged outside heart yearn, the inner core of described heart yearn is a steel wire 1, is surrounded by copper layer 2 in the periphery of steel wire 1; The inner core of described lead is an aluminum steel 3, is surrounded by copper layer 4 in the periphery of aluminum steel 3.

The utility model compared with prior art, its heart yearn is by steel wire and is coated on the outer copper layer of steel wire and is constituted, its lead is by aluminum steel and is coated on the outer copper layer of aluminum steel and is constituted, because electric current mainly concentrates on superficial layer (copper layer) transmission of lead, therefore, the utility model not only has the good electric conductivity of fine copper lead, can reduce the electrical loss on the circuit, also has advantage anticorrosion, that aluminum steel density is little, in light weight, cost is low simultaneously; Tensile strength of the present utility model improves greatly, can strengthen the span of shaft tower significantly, has reduced the cost that sets up of circuit, has increased the useful life of circuit, has improved the reliability of circuit.

Description of drawings:

Fig. 1 is the structural representation of the utility model embodiment.

Embodiment:

Below in conjunction with description of drawings embodiment of the present utility model.As shown in Figure 1: heart yearn is arranged, the stranded conductor of hinge joint is arranged outside heart yearn, the same prior art of production method of hinge joint line is set outside heart yearn.The inner core of heart yearn is a steel wire 1, is surrounded by copper layer 2 in the periphery of steel wire 1; The inner core of lead is an aluminum steel 3, is surrounded by copper layer 4 in the periphery of aluminum steel 3.Heart yearn, lead can adopt following method manufacturing:

At first with steel pole, aluminium bar, the copper strips degrease aligned, to copper strips vertically be coated on outside steel pole, the aluminium bar with the metallic cover welder, form copper steel recombination line base and copper aluminium recombination line base respectively, by technologies such as drawing, heat treatments, copper is combined with the metallurgy of aluminium with steel, copper, the line base is made required specification heart yearn, lead.Resistance of the present utility model can pass through calculating such as resistivity, conductor length, sectional area, can select the thickness of copper layer according to the needs of conductance, to reach the best ratio of conductive effect and cost.

Claims

1. a conducting wire for high-span high voltage electric transmission and transformation circuitry has heart yearn, and the stranded conductor of hinge joint is arranged outside heart yearn, it is characterized in that: the inner core of described heart yearn is steel wire (1), is surrounded by copper layer (2) in the periphery of steel wire (1); The inner core of described lead is aluminum steel (3), is surrounded by copper layer (4) in the periphery of aluminum steel (3).