CN200990258Y - High-temperature resisting cable - Google Patents

Abstract

A new type of high temperature resistant cable belongs to the field of cable technology. The cable conductor is made of tinned copper wire, the surface of the conductor is insulated with polytetrafluoroethylene, shielded with copper tape, equipped with a drain wire, the wrapping material is glass ribbon, and the filling material is rope. The inner sheath is made of tetrafluoroethylene-ethylene copolymer, and the outer sheath is armored with steel tape, and the outer sheath is extruded with silicone rubber. The cable has strong high temperature resistance, voltage resistance, corrosion resistance, flame retardancy and anti-interference performance, which meets the performance requirements of high temperature resistant cables. It is suitable for power transmission system with rated voltage 450/750V and below as power supply cable or electrical equipment connection. This product is mainly used in power plants, power transmission and transformation projects, petrochemical, metallurgy, steel, high-rise buildings and other fields.

Description

New high temperature resistant cable

technical field

The utility model relates to a novel high temperature resistant cable structure, which belongs to the technical field of cables.

Background technique

There are many types of existing cables, which are mainly composed of conductors and insulating layers on the surface of conductors and outer sheaths, etc., and their high temperature resistance is relatively poor. With the rapid development of science and technology and economy, some industries have higher and higher requirements for high temperature resistance of cables, especially for cables used in energy, petrochemical, metallurgy, electric power and other industries. , high temperature performance requirements for cables. In the past, it was not uncommon for fire accidents to occur due to the high temperature resistance of wires and cables, which caused great losses to the property of the country and enterprises, and also brought great harm to the lives of the people. In the construction of large-scale projects such as modern power stations, metallurgy, and chemical engineering, a large number of cables are required, and the use of high-temperature resistant cables with excellent performance can ensure the quality of project construction and the safety of production and use. In addition, since the outbreak of the SARS epidemic, sales of disinfection appliances have risen sharply. Microwave ovens and disinfection cabinets, for example, are not only kitchen utensils for urban households, but are now spreading to rural areas. The use of high-power household appliances also requires high temperature resistance for the wires used, while ordinary wires are prone to safety accidents because they are not resistant to high temperatures. Therefore, it is an urgent task for cable scientific research institutions and production enterprises to research and develop high-temperature-resistant wires and cables with excellent performance to meet market demand.

Utility model content

The purpose of this utility model is to overcome the shortcomings of ordinary cables and provide a new type of cable with high temperature resistance, good flame retardant effect, good insulation performance, high breakdown voltage, large heat resistance index, corrosion resistance, and good anti-interference performance. High temperature cables.

The purpose of this utility model is achieved in this way, the novel high-temperature-resistant cable, comprises the conductor and the insulating layer on the conductor surface and the outer sheath, is characterized in that the polytetrafluoroethylene insulating layer is extruded on the surface of the tinned copper wire conductor as the cable core, There are inner and outer layers of glass ribbon wrapping and inner and outer sheaths on the cable core, copper tape shielding layer and drain wire are arranged between the two layers of glass ribbon wrapping layers, and the inner sheath is set on the outer glass ribbon On the wrapping layer, there is a steel tape armor layer between the inner and outer sheaths.

Glass fiber filler is arranged in the cable core. There are four drain wires, which are evenly distributed between the copper tape shielding layer and the outer glass ribbon wrapping layer. The inner sheath is made of tetrafluoroethylene-ethylene copolymer, which is extruded on the outer surface of the outer layer of glass ribbon. The material of the outer sheath is silicone rubber, which is extruded on the outer surface of the steel tape armor layer.

The utility model has the advantages of reasonable and simple structure, easy manufacture and low cost. The cable has small insulation loss and good shielding performance, and its shielding transmission impedance is within 100MHz, not more than 1Ω/m, and has excellent heat aging resistance; the cable has strong high temperature resistance and insulation performance, Flame retardant and corrosion resistance; the cable structure is compact, round and safe to use, which can fully meet the performance requirements of cables in modern engineering construction, and can be widely used in power plants, power transmission and transformation projects, petrochemical, metallurgy, steel, high-rise Installation of transmission lines in high-temperature environments during the construction of large-scale projects such as buildings.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1 conductor, 2 insulation layer, 3 glass ribbon wrapping layer, 4 filling material, 5 shielding layer, 6 drain wire, 7 glass ribbon wrapping layer, 8 inner sheath, 9 armor layer, 10 outer sheath

Detailed ways

The core is formed by extruding the surface of tinned copper wire conductor 1 and wrapping polytetrafluoroethylene insulating layer 2, filled with glass silk rope 3, wrapped with glass ribbon 4, and copper tape shielding layer 5 is added. 5 After four copper drainage wires 6 are evenly arranged on the outer periphery, a layer of glass ribbon 7 is wrapped around it. Extruded tetrafluoroethylene-ethylene copolymer is used as inner sheath 8, steel tape armor 9, and extruded silicon rubber material is used as outer sheath 10.

Claims (5)

1, a kind of novel fire resistant cable, the insulating barrier and the oversheath that comprise conductor and conductive surface, it is characterized in that extruding the teflon insulation layer at the tinned copper wire conductive surface makes cable core, cable core is provided with inside and outside layer glass silk ribbon lapping layer and inside and outside sheath, between layer glass silk ribbon lapping layer, be provided with copper strips screen and drainage thread, inner sheath is arranged on the glass outer silk ribbon lapping layer, is provided with the steel-tape armouring layer between the inside and outside sheath.

2, novel fire resistant cable according to claim 1 is characterized in that being provided with in the described cable core glass fiber inserts.

3, novel fire resistant cable according to claim 1 is characterized in that described drainage thread is four, is uniformly set between copper strips screen and the glass outer silk ribbon lapping layer.

4, novel fire resistant cable according to claim 1 is characterized in that the material of described inner sheath is a tetrafluoroethylene-ethylene copolymer, is extruded in glass outer silk ribbon lapping layer outer surface.

5, novel fire resistant cable according to claim 1 is characterized in that the material of described oversheath is a silicon rubber, is extruded in steel-tape armouring layer outer surface.

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