Reinforced cable core and manufacturing method thereof

A technology of cable core and fiber reinforcement, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of poor transverse compressive strength, easy cracking, life reduction, etc., and achieve the effect of prolonging service life and increasing current carrying capacity

Inactive Publication Date: 2010-06-09
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a reinforced cable core and its manufacturing method in order to overcome the defects of poor transverse compressive strength, easy cracking in the longitudinal direction and reduced service life of the reinforced core in the prior art. Sheathed Fiber Composite Cable Core

Method used

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  • Reinforced cable core and manufacturing method thereof
  • Reinforced cable core and manufacturing method thereof
  • Reinforced cable core and manufacturing method thereof

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Experimental program
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Embodiment 1

[0023] like figure 1 As shown, the reinforced cable core of the present invention includes a fiber reinforced core 2 and a metal sheath 1 covering the fiber reinforced core. The fiber reinforced core 2 can be a single fiber composite mandrel or multiple fiber composite mandrels The combination of fiber composite mandrel and fiber can also be combined. The fiber composite mandrel adopts epoxy resin system, the gel time is 40-60s, and the glass transition temperature reaches 160°C after curing. The fiber adopts carbon fiber, of course, it can also be glass fiber, basalt fiber, carbon fiber, aramid fiber, ultra-high molecular weight polyethylene fiber, etc., wherein the strength of carbon fiber is 4900MPa, the modulus is 230GPa, and the fiber volume content is 60%. The manufacturing method of the reinforced cable core is: firstly, the fiber reinforced core 2 is pultruded. For example, the fiber composite mandrel adopts the pultrusion method, and the diameter of the mandrel is 9....

Embodiment 2

[0025] This embodiment is basically the same as Embodiment 1. In this embodiment, the fiber composite mandrel adopts epoxy resin system, the gel time is 40-60s, and the glass transition temperature after curing reaches 160°C. The fiber is a combination of basalt fiber and carbon fiber, in which the strength of basalt fiber is 4000MPa and the modulus is 100GPa; the strength of carbon fiber is 3000MPa and the modulus is 200GPa. The volume ratio of basalt fiber to carbon fiber is 1:3, and the fiber volume content is 60%. The fiber composite mandrel adopts the pultrusion method, and the fiber gradually transitions from carbon fiber to basalt fiber from the inside to the outside. 1.8~2.0g / cm 3 . A layer of metal sheath 11 is coated on the fiber composite mandrel by extrusion molding. The material of the metal sheath 11 is stainless steel, and then a layer of metal sheath 1 is extruded. The metal sheath 1 is electrical aluminum, metal The total thickness of the sheath 11 and the ...

Embodiment 3

[0027] This embodiment is basically the same as Embodiment 1. In this embodiment, the reinforced cable core of the present invention includes a plurality of fiber reinforced cores 2 and a metal sheath 1 covering these fiber reinforced cores. The fiber composite mandrel is made of vinyl For the resin system, the gel time is 30-40s, and the glass transition temperature reaches 140°C after curing. Two kinds of fibers are used: aramid fiber and carbon fiber, among which the strength of aramid fiber is 3000MPa and the modulus is 70GPa; the strength of carbon fiber is 3000MPa and the modulus is 200GPa. The volume ratio of aramid fiber to carbon fiber is 1:3, and the fiber volume content is 60%. The inner carbon fiber mandrel is prepared by pultrusion, and the aramid fiber composite layer is formed by braiding on the surface of the carbon fiber composite core. The volume can reach 100GPa, and the core rod density is 1.5~1.8g / cm 3 . A layer of metal sheath 1 is coated on the fiber ...

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Abstract

The invention discloses a reinforced cable core and a manufacturing method thereof. The reinforced cable core comprises a fiber reinforced core and a metallic sheath, wherein the fiber reinforced core is coated by the metallic sheath. The reinforced cable core of the invention not only has the advantages of low density, low expansion coefficient, high tensile strength and the like, but also has the functions of improving the current carrying capacity of a cable, shielding an inner fiber composite structure to avoid the electrical erosion between a fiber and an aluminum conductor, protecting the surface of a fiber composite material and reducing the mechanical performance loss caused by surface damage. Compared with reinforced cable cores with other structures, which are formed by only fiber composite cores, the reinforced cable core of the invention not only plays a role of bearing but also can further improve the current carrying capacity of the cable.

Description

technical field [0001] The invention relates to a reinforced core used as a high-voltage power transmission cable, in particular to a reinforced cable core combined with metal and high-strength fiber composite material and a manufacturing method thereof. Background technique [0002] The current power development can no longer meet the requirements of economic development, and the transmission capacity of transmission lines needs to be continuously increased, which will involve the transformation and erection of power lines. The transformation of lines and the replacement of circuit towers will not only affect the economy and national life, but also The cost is very large and land resources are limited, so the development of large-capacity overhead conductors has become an immediate need. Aiming at the disadvantages of the steel core structure with a reinforced core for traditional overhead wires, such as heavy weight, high thermal expansion coefficient, and low strength, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/00H01B5/00H01B7/00H01B7/17H01B13/00
Inventor 范载云王新营季世泽黄一钊党鹏黄国飞
Owner SHANGHAI ELECTRIC CABLE RES INST
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