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Temperature self-limited heating cable capable of electric energy saving

A technology that saves electric energy and heat tracing. It is applied in the direction of heating element material, heating element shape, etc. It can solve the problems of poor performance stability and low PTC strength, and achieve the effects of fast heat transfer and temperature rise, high mechanical performance, and energy saving.

Inactive Publication Date: 2016-08-10
ANBANG ELECTRICAL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, polymer-based PTC materials and polymer heating cables still have defects such as poor performance stability and low PTC strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A self-limiting temperature heating cable for saving electric energy, comprising a PTC core strip, which is sequentially covered with an insulating layer, a metal shielding layer and a wear-resistant sheath layer outside the PTC core strip, and the PTC core strip is composed of two parallel arranged The heating wire is composed of a PTC material layer coated on the outside; the PTC material is prepared from the following raw materials in parts by weight (kg): polypropylene 30, tin-bismuth alloy powder 4, zinc stearate 0.2, channel carbon Black 13, carboxylated nitrile powder rubber 9, glass microspheres 8, silver powder 4, ferric nitrate 5, citric acid 1.4, polyethylene 40, polytetrafluoroethylene 16, deionized water in proper amount.

[0013] The self-limiting temperature heating cable for saving electric energy is prepared by the following specific steps:

[0014] (1) Soak the glass microspheres in absolute ethanol, take them out after soaking for 4 hours, wash them w...

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Abstract

The invention discloses a temperature self-limited heating cable capable of electric energy saving. The temperature self-limited heating cable comprises a positive temperature coefficient (PTC) core belt, an insulation layer, a metal shielding layer and a corrosion-resistant sheath layer, wherein the insulation layer, the metal shielding layer and the corrosion-resistant sheath layer sequentially wrap the PTC core belt, the PTC core belt comprises two heating wires and a PTC material layer, the two heating wires are arranged in parallel, and the PTC material layer wraps the two heating wires. The heating cable fabricated by the invention has the advantages of high mechanical property, high mechanical performance, fast temperature rise, electric energy saving and long service lifetime, and is worth promotion.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a self-limiting temperature heating cable for saving electric energy. Background technique [0002] Heat tracing cables are widely used in many fields. For example, in industry, they are mainly used in petroleum, chemical, thermal power plants and other places where liquid substances in pipelines or tanks need to be prevented from solidifying / slow flow. In public facilities, they are mainly used as companions for fire-fighting pipelines. It can be used for indoor heating and anti-freezing of outdoor pipes in winter in civil applications. The core of the heating cable lies in its structure and the PTC material for making its electric heating element. PTC material refers to a heat-sensitive material whose resistance value increases with the increase of temperature, that is, the resistance or resistivity of the material remains basically unchanged or only slightly changes w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/12H05B3/56
CPCH05B3/12H05B3/56
Inventor 李贻连卜基峰姚月凤陈更芬李宏国
Owner ANBANG ELECTRICAL GRP
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