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Heating cable

A technology of heat tracing and thermal insulation, applied in the direction of the shape of the heating element, can solve the problems of high cost and short life, and achieve the effect of low cost and long life

Inactive Publication Date: 2011-04-13
胡志新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing heat tracer, its heating element uses carbon fiber, its life is short and the cost is high

Method used

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Embodiment Construction

[0010] Such as figure 1 , a heating cable, including an ordinary three-phase power line, the three-phase power line includes a live wire 2, a neutral wire 3, a ground wire 4, and an insulating outer sheath 1; the live wire 1 is connected to a PTC temperature controller 5, and the PTC temperature controller The other end of the device 5 is connected to a resistance wire 6; the neutral wire 3 is connected to another resistance wire 7, and the ends of the two resistance wires are connected to each other; the ground wire 4 is connected to the second ground wire 8; the resistance wire and the second The outside of the ground wire 8 is wrapped with a thermally conductive insulating outer sheath 9 .

[0011] An injection molding sealing layer 10 is arranged outside the PTC thermostat 5 .

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Abstract

The invention discloses a heating cable, which relates to an electrothermal heat preservation device, comprising a three-phase power line. The three-phase power line comprises a live wire, a neutral wire, an earth wire and insulating outer sheaths, wherein the live wire is connected with a PTC (Positive Temperature Coefficient) temperature controller and the other end of the PTC temperature controller is connected with a resistance wire; the neutral wire is connected with another resistance wire; the tail ends of the two resistance wires are mutually connected; the earth wire is connected with a second earth wire; and both the resistance wires and the second earth wire are externally wrapped with the heat-conductive insulating outer sheaths. By adopting the resistance wires as heating elements, the heating cable has long service life and low cost; through the connected PTC temperature controller, the heating cable is automatically started to heat when the temperature is low; and after the temperature rises, the internal resistance of the heating cable is close to infinity, and the circuit is disconnected to stop supplying heat.

Description

technical field [0001] The invention relates to an electric heat preservation device. Background technique [0002] The heating cable is to use electric heating equipment to convert electric energy into heat energy, through direct or indirect heat exchange, to supplement the heat lost by the heating equipment through the insulation material, and to use temperature control to track and control the temperature of the medium in the heating equipment. temperature to maintain it at a reasonable and economical level. [0003] In the existing heat tracer, the heating element is made of carbon fiber, which has short service life and high cost. Contents of the invention [0004] The object of the present invention is to provide a heating cable with long service life and low cost. [0005] The object of the present invention is achieved like this: a heating cable, comprising a three-phase power line, the three-phase power line includes a live wire, a neutral wire, a ground wire, a...

Claims

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Application Information

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IPC IPC(8): H05B3/54
Inventor 胡志新
Owner 胡志新
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