Method for manufacturing cable for high-temperature gas cooled reactor

A high-temperature gas-cooled reactor and cable manufacturing technology, applied in cable/conductor manufacturing, conductor/cable insulation, circuits, etc., can solve the problems of high electrical conductivity and the cable cannot meet the ambient temperature, and achieve high volume resistivity, excellent Effects of mechanical physical properties, good thermal stress cracking and radiation resistance

Active Publication Date: 2012-12-26
SICHUAN MINGXING CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a cable manufacturing method for high-temperature gas-cooled reactors in view of the defect that the cables manufactured in the prior art cannot meet the adaptability to the environment temperature, especially the high-temperature environment higher than two hundred degrees Celsius. The manufactured cables have the characteristics of strong adaptability to ambient temperature, high electrical conductivity and strong electromagnetic compatibility

Method used

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  • Method for manufacturing cable for high-temperature gas cooled reactor

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Embodiment 1

[0022] A cable manufacturing method for high-temperature gas-cooled reactors, including material selection-wire drawing-conductor stranding-finished product manufacturing-finished product packaging and warehousing process, and also includes annealing-insulating layer extrusion-outer sheath extrusion manufacturing process ; The annealing means that the surface of the copper monofilament is plated with 6 μm silver through an annealing silver plating machine; There is a good cooling device, and the extrusion processing temperature is controlled at 360°C. The extrusion die is a pipe extrusion die with a high draw ratio, and the selected draw ratio is 30.

[0023] The wire drawing refers to drawing a copper monofilament from an electrical round copper rod through a plurality of drawing dies of the drawing equipment.

[0024] The conductor stranding refers to concentric stranding of multiple strands of silver-plated copper wires with a stranding pitch range of 10mm.

[0025] In the...

Embodiment 2

[0030] A cable manufacturing method for high-temperature gas-cooled reactors, including material selection-wire drawing-conductor stranding-finished product manufacturing-finished product packaging and warehousing process, and also includes annealing-insulating layer extrusion-outer sheath extrusion manufacturing process The annealing refers to the copper monofilament with a thickness of 10 μm silver plated on the surface of the copper monofilament through an annealing silver plating machine; the extrusion of the insulating layer and the extrusion of the outer sheath refer to the use of a screw with a high compression ratio of 4.0:1, and the extrusion equipment There is a good cooling device, the extrusion processing temperature is 380°C, and the extrusion die is a pipe extrusion die with a high draw ratio, and the selected draw ratio is 35.

[0031] The wire drawing refers to drawing a copper monofilament from an electrical round copper rod through a plurality of drawing dies ...

Embodiment 3

[0038] A cable manufacturing method for high-temperature gas-cooled reactors, including material selection-wire drawing-conductor stranding-finished product manufacturing-finished product packaging and warehousing process, and also includes annealing-insulating layer extrusion-outer sheath extrusion manufacturing process ; The annealing means that the surface of the copper monofilament is plated with 15 μm silver through the annealing silver plating machine; There is a good cooling device, the extrusion processing temperature is 400 ℃, and the extrusion die is a pipe extrusion die with a high stretch ratio, and the selected stretch ratio is 45.

[0039] The wire drawing refers to drawing a copper monofilament from an electrical round copper rod through a plurality of drawing dies of the drawing equipment.

[0040]The conductor stranding refers to concentric stranding of multiple strands of silver-plated copper wires, with a stranding pitch range of 30 mm.

[0041] In the wire...

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Abstract

The invention discloses a method for manufacturing a cable for a high-temperature gas cooled reactor, and the method the following process flows: material selection-wire drawing-conductor twisting-finished product manufacturing-finished product packaging storage. The method is characterized by comprising annealing-extrusion of an insulating layer-extrusion of an outer sheath, wherein the annealing step means that an annealing silver plating machine is used for plating silver with the thickness of 6-20mu m on a copper monofilament surface; and the extrusion of the insulating layer and the extrusion of the outer sheath mean that screws with a high compression ratio of 3.5:(1-5.0):1 are used, extrusion equipment is provided with a good cooling device, the extrusion processing temperature of the extrusion equipment is controlled between 360 DEG C and 420 DEG C, a pipe-extrusion mould with the high extension ratio is selected as an extrusion mould, and the selected mating extension ratio is 30-50. The cable manufactured by the method provided by the invention has the characteristics of strong ambient temperature adaptability, high conductivity and strong electromagnetic compatibility.

Description

technical field [0001] The invention relates to the technical field of electric cables, and mainly relates to a method for manufacturing electric cables used in high-temperature gas-cooled reactors. Background technique [0002] High-temperature gas-cooled reactors use helium as a coolant, and nuclear reactors with high outlet temperatures. High-temperature gas-cooled reactors use coated particle fuel and graphite as a moderator. The core outlet temperature is 850~1000℃, or even higher. The high-temperature gas-cooled reactor has the advantages of high thermal efficiency of 40%~41%, deep burnup, up to 20MWd / t uranium, and high conversion ratio of 0.7~0.8. Due to the good chemical stability of helium, good heat transfer performance, and low induced radioactivity, the residual heat can be safely taken out after shutdown, and the safety performance is good. The cables used in the high-temperature gas-cooled reactor CRDM rod position measurement system, stepping motor and driv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/02H01B13/14H01B13/26
Inventor 宋强李广元沈卢东盛业武陈光高沈智飞栾渊明
Owner SICHUAN MINGXING CABLE
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