Aluminum cable steel reinforced for power grid overhead transmission line

A technology for overhead transmission lines and steel-cored aluminum stranded wires, which is applied to power cables, circuits, insulated cables, etc., can solve the problem of unsynchronized operation, reduce eddy current loss and proximity effect, and improve anti-icing ability. , the effect of increasing the volume

Inactive Publication Date: 2015-12-23
张健
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

There is usually SO in the atmosphere 2 , NO, NO 2 , NH 3 , CO 2 Such acid and alkali substances will cause chemical corrosion to aluminum conductors and galvanized steel wires, especially the corrosion of galvanized steel wires is more serious, usually with a lifespan of only 10 to 15 years, while the design life of line towers is 30 years, and synchronization cannot be achieved during operation. Require

Method used

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  • Aluminum cable steel reinforced for power grid overhead transmission line
  • Aluminum cable steel reinforced for power grid overhead transmission line

Examples

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Embodiment Construction

[0018] Such as figure 1 As shown, this embodiment is an aluminum-steel-cored wire for overhead transmission lines in a power grid. The core body is twisted into strands by several steel wires 1 made of non-magnetic stainless steel. The steel wire 1 is made of non-magnetic stainless steel, the content of manganese Mn in the non-magnetic stainless steel is 10%-16%, the content of nickel Ni is less than 5%, and the content of nitrogen N is between 0.3-0.4%.

[0019] Because ordinary stainless steel, such as 304 steel, is magnetic because the nickel content is greater than 9%. Therefore, this example uses non-magnetic stainless steel ASTM-200 series manganese-chromium austenitic stainless steel, preferably 201 (1Cr17Mn6Ni5N), 202 (1Cr18Mn8Ni5N), 204 (0Cr18Mn8Ni5N); 204Cu (1Cr17Mn8Ni3Cu3N), 205 (2Cr17Mn15Ni2N) stainless steel. CrMn series austenitic stainless steel with high manganese Mn, chromium Cr, and nitrogen content uses manganese instead of nickel, not only the price is gr...

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Abstract

The invention relates to an aluminum cable steel reinforced for a power grid overhead transmission line, wherein the aluminum cable steel reinforced is low in cost, large in current-carrying capacity, good in anti-corrosion performance, high in strength, non-magnetic and low in loss. According to the technical scheme of the invention, the aluminum cable steel reinforced for the power grid overhead transmission line comprises a tensile core body and a conductor. The conductor is composed of a plurality of electrical aluminum conductor wires. The aluminum cable steel reinforced is characterized in that the tensile core body is composed of a plurality of non-magnetic stainless steel wires and the steel wires are twisted into strands. The Mn content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 10-15%, and the Ni content thereof is smaller than 5%. The N content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 0.3-0.4%. the aluminum cable steel reinforced for the power grid overhead transmission line is applied to the power engineering field.

Description

technical field [0001] The invention relates to a steel-cored aluminum stranded wire for an overhead power transmission line of a power network. Applicable to the field of electric power engineering. Background technique [0002] Steel-cored aluminum stranded wire is a common transmission wire suitable for overhead lines, whether it is in the 1920s and 1930s or today in the 21st century, these are very common. Generally, steel-cored aluminum stranded wires are used on utility poles in the field. my country's national standard for steel-cored aluminum stranded wire is GTB-1179-83, and steel-cored aluminum stranded wire is a combination of aluminum conductors and steel wires. Due to the low tensile strength of the aluminum wire, which is only 100-250MPa, and the strength of the galvanized steel wire selected is 1244MPa, the resistivity of the aluminum wire is usually required to be 0.028214Ωmm2 / m. After the combination, it can not only reflect good conductivity, but also It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/00H01B1/02H01B7/30H01B7/28H01B7/42
CPCY02A30/14
Inventor 张健
Owner 张健
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