CN202889675U - Anticorrosion explosion-proof medium-length self-regulating heat tracing cable - Google Patents

Abstract

An anticorrosion explosion-proof medium-length self-regulating heat tracing cable relates to a self-regulating heat tracing cable. The anticorrosion explosion-proof medium-length self-regulating heat tracing cable comprises a main heat tracing tape and an auxiliary heat tracing tape, wherein the main heat tracing tape comprises a first heat-conducting wire core which is covered with a first wire core insulating layer; the auxiliary heat tracing tape comprises a second heat-conducting wire core which is covered with a second wire core insulating layer; and a PT semiconductor material layer, a heating filament layer, a total insulating layer, a shielding layer and an outer sheath layer are orderly arranged outside the main heat tracing tape and the auxiliary heat tracing tape. The anticorrosion explosion-proof medium-length self-regulating heat tracing cable is good in heating effect, simple in structure and low in cost.

Description

Anticorrosion explosion-proof middle-long type automatic temperature-control heat tracing cable

Technical field

The utility model relates to a kind of automatic temperature-controlled heat tracing cable, relates in particular to a kind of anticorrosion explosion-proof middle-long type automatic temperature-control heat tracing cable.

Background technology

Automatic temperature-controlled heat tracing cable (being called for short automatic control hot line, self-temperature-limiting heating strip) is banded constant temperature electric heater of new generation.The resistivity of its heater element has very high positive temperature coefficient " PTC " effect and parallel with one another, is called high molecule electric resistance rate PTC material (PTC-R), be a kind of composite polymer functional material.The characteristics of automatic control hot line are: can volitional check temperature during heating, and need not any optional equipment with the automatic regulation output power of the temperature of heated object, arbitrarily brachymemma or in certain length range spreading use, and allow repeatedly juxtaposition and without hyperthermia and superheating and the worry of burning.These characteristics make the automatic control hot line be suitable for insulation, companion's heat, temperature control, the heating of pipeline, equipment and container.Therefore, in recent years, the automatic control hot line is widely used in oil, chemical industry, electric power, coal, metallurgy, food, freezing, light industry, building and other department.

Often take special automatic temperature-controlled heat tracing cable for the long pipeline of the hot length of companion in the prior art.Carry out heat exchange replenishing its thermal loss by heating cable and ducted liquid, but existing Special self-thermal control heat tracing cable structure more complicated all, and cost is higher, and companion's thermal effect is also not so good.

Summary of the invention

The purpose of this utility model just provides a kind of simple in structure, and cost is lower, and the good anticorrosion explosion-proof middle-long type automatic temperature-control heat tracing cable of companion's thermal effect.

The utility model comprises main heating tape, secondary heating tape, described main heating tape comprises the first heat conduction core, at described the first heat conduction core outside parcel First Line core insulation layer, described secondary heating tape comprises the second heat conduction core, at described the second heat conduction core outside parcel the second core insulating barrier; Set gradually PTC semiconductive material layer, heating wire layer, total insulating barrier, screen and external sheath layer at described main heating tape and the secondary heating tape outside.

The utility model is set up secondary heating tape 3 on the basis of original main heating tape 2, not only realize more efficient heating effect, and simple in structure, and cost is lower.

Description of drawings

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

Embodiment

As shown in Figure 1, the utility model comprises main heating tape 1, secondary heating tape 2, described main heating tape 1 comprises the first heat conduction core 3, at described the first heat conduction core 3 outsides parcel First Line core insulation layer 4, described secondary heating tape 2 comprises the second heat conduction core 5, wraps up the second core insulating barrier 6 in described the second heat conduction core 5 outsides; Set gradually PTC semiconductive material layer 7, heating wire layer 8, total insulating barrier 9, screen 10 and external sheath layer 11 at described main heating tape 1 and secondary heating tape 2 outsides.

Claims (1)

1. anticorrosion explosion-proof middle-long type automatic temperature-control heat tracing cable, it is characterized in that: comprise main heating tape, secondary heating tape, described main heating tape comprises the first heat conduction core, at described the first heat conduction core outside parcel First Line core insulation layer, described secondary heating tape comprises the second heat conduction core, at described the second heat conduction core outside parcel the second core insulating barrier; Set gradually PTC semiconductive material layer, heating wire layer, total insulating barrier, screen and external sheath layer at described main heating tape and the secondary heating tape outside.

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