Manufacturing method of high-temperature-resistant cables

Abstract

The invention relates to the technical field of manufacturing of high temperature cables, in particular to novel high-temperature-resistant cables. The novel high-temperature-resistant cables comprise single-body single-core type cables and single-body multi-core cables. The structure of the cross section of each cable body comprises a cable body outer sheath, a filling-in body, insulating layer outer jacket shell layers, conductor insulating layers and conductors, wherein the cable body is provided with one to five conductors, the outer layer of each conductor is wrapped by one equal-thickness conductor insulating layer of a uniform structure, each insulating layer outer jacket shell layer is manufactured on the outer side of the corresponding insulating layer in a wrapped and sealed mode, and the cable body outer sheath is uniformly manufactured on the outer sides of the insulating layer outer jacket shell layers in a wrapped mode; the filling-in body of an asymmetrical and non-uniform structure is filled into the space between the insulating layer outer jacket shell layers and the cable body outer sheath, and both the filling-in body and the cable body outer sheath are made of PTFE rubber or the filling-in body is made of high-temperature-resistant cloth materials such as asbestos and glass fibers. The novel high-temperature-resistant cables are low in manufacturing cost, high in heat resistance, safe, reliable, good in anti-aging effect and wide in application range.

Description

Technical field: [0001] The invention belongs to the technical field of cable manufacturing, and relates to the improvement of the technical structure of a high-temperature-resistant cable in a high-power electric application occasion, in particular to a preparation method of a novel high-temperature-resistant cable. Background technique: [0002] Boilers are important heat energy supply equipment in the national economy. Electric power, machinery, metallurgy, chemical industry, textile, papermaking, food and other industries, as well as industrial and civil heating all require boilers to supply a large amount of heat energy. At present, boilers are used in more and more occasions in people's daily life, and their importance is increasing. However, the cables in the high-temperature environment required by the automation accessories of boiler equipment have always been a major difficulty in the boiler production process. Because the boiler is a high-power equipment, the env...

AI Technical Summary

Problems solved by technology

The quality of high-temperature cables will affect the service life of boilers and other equipment, causing problems such as excessive heating of cables under high-power loading, excessive temperature, accelerated aging of cables, abnormal operation of equipment, shortened daily maintenance cycles, and increased maintenance costs. the emergence of

In severe cases, cable heating may cause short circuit or fire, causing safety hazards such as fire and industrial injury. This is also a major difficulty and defect of boiler products under the existing production technology.

Existing ordinary high-temperature cable sheath materials generally use glass fiber filaments, irradiated cross-linked polyethylene, Teflon, etc. The high-temperature resistance of these materials is not strong, and the limit temperature generally reaches 150-200 ° C, although it can meet the requirements of some boilers. and other equipment and environmental requirements, but restricts the technological innovation and development of boiler products

As a result, the development of the large-scale and high-power boiler industry is restricted by the technical conditions of the cable technology link, and cannot achieve rapid and substantial development.

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