Resistance stabilizing cable

A cable and resistance value technology, applied in the field of wire and cable, can solve problems such as increased cable attenuation, affecting system stability, and decreasing supply current

Active Publication Date: 2015-06-17
SICHUAN JIUZHOU WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When tough copper wires, aluminum wires, etc. are used alone as cable conductors, the transmission performance is superior, and they are also commonly used materials. However, when used in precision instruments or products with special purposes, etc. The temperature change affects the stability of signal transmission, which is manifested in the decline of performance indicators such as attenuation constant and characteristic impedance; and when nickel-chromium alloy, chromium-aluminum alloy and other materials are used alone as conductors, the conduction required by the cable cannot be achieved. The purpose of power and signal
For example, for cables for power supply, the increase of resistance value will reduce the supply current, which will definitely affect the stability of the system; for signal cables, the increase of resistance value will increase the attenuation of the cable, which will definitely affect the stability and stability of signal transmission. quality

Method used

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Examples

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Effect test

Embodiment 1

[0020] Embodiment 1: see attached figure 1 and 2 .

[0021] A stable resistance cable, comprising a composite conductive wire core, an insulating layer 3 wrapped outside the composite conductive wire core, a braided shielding layer 4 wrapped outside the insulating layer 3, and an outer sheath wrapped outside the braided shielding layer 4 Set of 5 compositions.

[0022] The production process of the stable resistance cable in this embodiment is: twist the multi-metal composite wire to obtain a composite conductive core, extrude a plastic insulating layer 3 on the composite conductive core, and then use metal wires to braid the shielding layer 4 and then extrude the outer sheath. Set 5 protective layers, that is, to make a stable resistance cable product.

Embodiment 2

[0024] A stable resistance cable, characterized in that it consists of a composite conductive core, an insulating layer 3 wrapped outside the composite conductive core, a braided shielding layer 4 wrapped outside the insulating layer 3, and a braided shielding layer 4 wrapped The outer outer sheath 5 is composed of;

[0025] The composite conductive wire core is composed of a metal wire whose resistance value (or resistivity) increases with temperature rise and a metal wire whose resistance value (or resistivity) decreases with temperature rise. The resistance value of the core remains constant or substantially constant during the working process of the stabilizing cable;

[0026] The composite conductive wire core consists of a cross-sectional area (that is, the radial cross-sectional area of ​​the metal wire, the same below) as 0.30mm 2 The copper wires 1 and 56 have a cross-sectional area of ​​0.30mm 2 The chromium-aluminum alloy wire is composed of 2 composite strands. ...

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Abstract

The invention discloses a resistance stabilizing cable which is characterized by being composed of a composite conductor wire core, an insulation layer coated outside the composite conductor wire core, a woven shielding layer coated outside the insulation layer and an outer sheath coated outside the woven shielding layer. The composite conductor wire core is formed by compositing and twisting metal lines, wherein the resistance of one metal wire can rise along with temperature rise, and the resistance of the other metal wire can decrease along with temperature rise. The resistance of the composite conductor wire core is constant in a work process of the resistance stabilizing cable. When the resistance stabilizing cable is used, the resistance change of a conductor with the resistivity increasing along with temperature rise is equal to the resistance change of a conductor with the resistivity decreasing along with temperature rise. Thus, the resistance can be stable in a work process of the cable, and transmission quality and stability are guaranteed.

Description

technical field [0001] The invention belongs to electric wires and cables, and relates to a stable resistance cable. The stable resistance cable is used as a power supply and communication cable. It can keep the resistance value of the wire and cable stable during the working process. It is especially suitable for high-precision instruments and special occasions that require high transmission power and signal systems. Background technique [0002] Generally, the resistance of wires and cables is related to the material, temperature, length, and cross-sectional area. When the cross-sectional area and length of the conductor are the same, the material of the conductor is different, and the resistance is different. The resistance of most metal materials increases with the increase of temperature, such as copper wire, aluminum wire, etc. As the temperature increases, it decreases instead, such as nickel-chromium alloy, chromium-aluminum alloy, etc. (reference material GB / T 1234...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/00H01B7/17H01B7/02
Inventor 王鹏张立昇王艳
Owner SICHUAN JIUZHOU WIRE & CABLE
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