CN201499333U

CN201499333U - Heating cable

Info

Publication number: CN201499333U
Application number: CN200920208234XU
Authority: CN
Inventors: 王清; 陈银; 鲁学
Original assignee: SHANGHAI MORN ELECTRIC EQUIPMENT CO Ltd
Current assignee: SHANGHAI MORN ELECTRIC EQUIPMENT CO Ltd
Priority date: 2009-08-21
Filing date: 2009-08-21
Publication date: 2010-06-02
Anticipated expiration: 2019-08-21

Abstract

The utility model discloses a heating cable, which consists of a cable core, a filling layer, a metal shield, an inner jacket and an outer jacket. The cable core is formed by twisting single or multi-strand heating metal elements, each heating metal element consists of a conductor and an insulating layer which is extruded outside the conductor and has fine flexibility and mechanical properties, the filling layer is filled among the insulating layers, the halogen-free fire-retardant metal shield is coated on the outer surface of the insulating layers and the filling layer, the halogen-free fire-retardant inner jacket is extruded on the outer surface of the metal shield, and the halogen-free fire-retardant outer jacket is covered outside the inner jacket. The heating cable utilizing the heating element with fine heating efficiency can heat in a short time and has heating materials with relatively long service life. Based on electricity utilization particularity, the heating cable utilizing a full shielding structure is reliable and safe in running, and increases waterproof property by utilizing the waterproof filling layer.

Description

Heating cable

Technical field:

The utility model relates to a kind of cable technology, particularly a kind of cable with heating property.

Background technology:

From existing cable, the basic structure formula is a coated metal lead in the insulation sheath.Cable can not generate heat in the ordinary course of things, unless just under the situation of current work or loose contact that exceeds the quata cable itself can generate heat, so existing cable can not become the demand that heating material satisfies heating, can only be for producing heat energy material transmission of electric energy.Heating cable is widely used in the actual life at present, the insulation heating of snow melting, change ice and the soil of the insulation companion heat of the heat-preserving anti-freezing of heating, pipeline tank body and equipment, the hot system of life, outdoor facility all can be used heating cable in the building, and cable of the prior art exists the weak point in useful life, the anti-performance of turning round is very weak, and waterproof measure is lower, heating efficiency is not high yet, and in use, need overhauling of timing, so not only waste of manpower, increase cost, be easy to cause serious production accident, also have very big potential safety hazard simultaneously.

The utility model content:

The utility model is at the existing various drawbacks of above-mentioned existing cable, and a kind of cable with good flexibility and resistance to torsion is provided.

In order to achieve the above object, the utility model adopts following technical scheme to realize:

Heating cable, this cable is made up of cable core, packed layer, metallic shield sheath, inner sheath and oversheath; Hardware is stranded forms by the heating of sub-thread or multiply for described cable core, and the heating hardware is by conductor and be extruded in the insulating barrier that conductor has good flexibility and mechanical performance outward and form;

Fill by packed layer in space between the described insulating barrier;

Coat with halogen-free flameproof metallic shield sheath on the outer surface of described insulating barrier and packed layer;

Extrude one deck halogen-free flameproof inner sheath on the described metallic shield jacket outer surface, this inner sheath covers one deck halogen-free flameproof oversheath outward;

Described oversheath adopts the PVC overcoat of anti-extensive chemical corrosion;

Described insulating barrier is the crosslinked polyetylene insulated of high pressure resistant high temperature;

Described packed layer is the waterproof packed layer, has strengthened the water resistance of cable like this.

The utlity model has following advantage according to what technique scheme obtained:

(1) heating cable adopts and has the good heating hardware of heating efficiency, can reach heating effect at short notice, and the useful life of exothermic material is longer relatively;

(2) the two-layer sheath of heating cable all adopts good high polymer material, and then has guaranteed that cable has very high anti-wear performance;

(3) particularity of consideration electricity consumption, this cable adopts complete shielding construction, the reliable safety of cable, packed layer is the waterproof packed layer simultaneously, has strengthened the water resistance of cable.

Description of drawings:

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is the structural representation of the utility model in specific embodiment.

Embodiment:

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

The cable that the utility model provides has adopted structure as shown in Figure 1 to realize in order to reach the specific (special) requirements of mining usefulness:

This cable is made up of cable core, packed layer 3, metallic shield sheath 4, inner sheath 5 and oversheath 6; Cable core is generated heat by sub-thread or multiply, and hardware is stranded to form, adopt four heating hardwares to carry out this scheme of concrete enforcement in the present embodiment, the heating hardware is by conductor 1 and be extruded in conductor 1 outer insulating barrier 2 with good flexibility and mechanical performance and form, conductor 1 adopts new production technology, not only flexibility is good, and under the situation that cable constantly reverses, can not destroy conductor 1, guarantee normally operation.Insulating barrier 2 is the crosslinked polyetylene insulated of high pressure resistant high temperature; Fill by halogen-free flameproof oxygen barrier layer packed layer 3 in space between insulating barrier 2.

On the outer surface of insulating barrier 2 and halogen-free flameproof oxygen barrier layer packed layer 3, coat with halogen-free flameproof metallic shield sheath 4; On metallic shield sheath 4 outer surfaces, extrude one deck halogen-free flameproof inner sheath 5, these inner sheath 5 outer one deck halogen-free flameproof oversheaths 6 that cover, oversheath 6 adopts the PVC overcoat of anti-extensive chemical corrosion; Has very strong resistance to corrosion.

This heating cable has adopted new cabling process, the constraint of the cabling process of breaking the normal procedure, and cable is in operation and reverses (within the specific limits) to any one direction, can not produce destruction to the conductor 1 and the insulating barrier 2 of cable.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. heating cable, this cable is made up of cable core, packed layer, metallic shield sheath, inner sheath and oversheath; It is characterized in that hardware is stranded forms by the heating of sub-thread or multiply for described cable core, the heating hardware is by conductor and be extruded in the insulating barrier that conductor has good flexibility and mechanical performance outward and form, and fill by packed layer in the space between the described insulating barrier; Coat with halogen-free flameproof metallic shield sheath on the outer surface of described insulating barrier and packed layer; Extrude one deck halogen-free flameproof inner sheath on the described metallic shield jacket outer surface, this inner sheath covers one deck halogen-free flameproof oversheath outward.

2. heating cable according to claim 1 is characterized in that, described oversheath adopts the PVC overcoat of anti-extensive chemical corrosion.

3. heating cable according to claim 1 is characterized in that, described insulating barrier is the crosslinked polyetylene insulated of high pressure resistant high temperature.

4. heating cable according to claim 1 is characterized in that, described packed layer is the waterproof packed layer.