CN207503675U - A kind of low smoke and zero halogen sheath frequency-conversion power cable - Google Patents

Abstract

The utility model is related to a kind of low smoke and zero halogen sheath frequency-conversion power cables, including 3 leading bodies and 3 neutral conductors, 3 leading bodies and 3 neutral conductors are centrosymmetric setting, the first mica layer is enclosed on the outside of the leading body and the neutral conductor, crosslinked polyetylene insulated layer is enclosed on the outside of first mica layer, 3 leading bodies and 3 neutral conductors use and form cable core with core type bundle strand, the outside of the cable core is equipped with stranding belting layer, Ceramic silicon rubber layer is provided on the outside of the stranding belting layer, metal screen layer is provided with outside the Ceramic silicon rubber layer, polyolefin layer is provided on the outside of the metal screen layer.The utility model is by setting mica layer so that cable has fireproof function.

Description

A kind of low smoke and zero halogen sheath frequency-conversion power cable

Technical field

The utility model is related to a kind of low smoke and zero halogen sheath frequency-conversion power cables, belong to cable protection technical field.

Background technology

With the gradual development of cable industry, cable is used for the various aspects of people's life, for being used in hot environment In frequency-changing cable, high temperature resistance and mechanical performance to frequency-changing cable propose higher requirement, existing frequency-changing cable High temperature resistance, mechanical performance have been unable to meet the requirement of hot environment, it is therefore desirable to propose a kind of new frequency-changing cable.

Utility model content

Of the existing technology in order to solve the problems, such as, the utility model provides a kind of low smoke and zero halogen sheath frequency conversion electric power electricity Cable, it is main to improve heat dissipation, fire line and the water proofing property of cable in itself, ensure power supply safety.

Technical solution is used by the utility model：

A kind of low smoke and zero halogen sheath frequency-conversion power cable, including 3 leading bodies and 3 neutral conductors, 3 leading bodies It is centrosymmetric setting with 3 neutral conductors, the first cloud is enclosed on the outside of the leading body and the neutral conductor Mother layer, is enclosed with crosslinked polyetylene insulated layer on the outside of first mica layer, and the number of plies of first mica layer is 2 layers, and 3 Leading body described in root and 3 neutral conductors are used forms cable core with core type bundle strand, and the outside of the cable core is equipped with stranding packet Belt is provided with Ceramic silicon rubber layer on the outside of the stranding belting layer, metal is provided with outside the Ceramic silicon rubber layer Shielded layer, is provided with polyolefin layer on the outside of the metal screen layer, and the cross section of the stranding band layer by layer is circular ring shape, institute It states and expanding powder is filled in the gap between cable core and the stranding belting layer；Along the length direction of the polyolefin layer, in institute The cooling fin that multiple annulars are arranged at intervals on the outer surface of polyolefin layer is stated, the cooling fin is made of polyolefin, described to dissipate The internal diameter of backing and the outer diameter of the polyolefin layer are adapted, and the outer diameter of the cooling fin is bigger 3-5mm than the internal diameter of cooling fin.

Preferably, the second mica layer, second cloud are additionally provided between the metal screen layer and the polyolefin layer The number of plies of mother layer is 1 layer.

Further, the distance between two described cooling fins of arbitrary neighborhood can be 3-5mm.

Preferably, the first water blocking tape layer is equipped between first mica layer and the crosslinked polyetylene insulated layer, it is described The number of plies of first water blocking tape layer is 2 layers.

Further, it is provided with the second water blocking tape layer between second mica layer and the polyolefin layer, described second The number of plies of water blocking tape layer is 1 layer.

It is made in general, oxygen-free copper bar may be used in the leading body and the neutral conductor.

The beneficial effects of the utility model：

The utility model has insulation and high temperature resistant by wrapping up mica layer, mica in the outside of leading body and neutral conductor Characteristic, thus mica layer has very strong flame retardant effect, and 2 stratus mother layer can ensure that leading body completely by cloud on leading body Mother layer is wrapped, even if in addition in the case where big fire is burnt always, when burning mica layer, even if big fire is in lasting burning Under burning, outermost mica layer failure, and at least also have 1 stratus mother layer protection leading body and neutral conductor, ensure power supply safety, Thus relatively existing cable, the flameproof effect of the utility model are also more preferable.

The setting of cooling fin, for cable in the case of energization, cable can generate certain heat in itself, thus need as soon as possible Heat inside cable is distributed, and by setting cooling fin, increase cable and extraneous contact area, so as to fulfill but The purpose of heat；And the specific size of cooling fin so that the size Control of cooling fin reduces within the scope of smaller to cable Discharge and the influence of storage.

The setting of first water blocking tape layer and the second water blocking tape layer, when cable occurs damaged, moisture enters through breakage Inside cable, power supply safety is ensured.

The setting of expanding powder, when there is broken hole on stranding belting layer, moisture can be contacted through the broken hole with expanding powder, swollen The broken hole will be blocked after the expansion of swollen powder, so as to prevent moisture from continuing to penetrate into, ensure power supply safety.

Description of the drawings

Fig. 1 is the sectional view of the utility model；

Fig. 2 is the sectional view of leading body；

Fig. 3 is the front view of cable part.

Wherein：1st, leading body；2nd, neutral conductor；3rd, expanding powder；4th, stranding belting layer；5th, Ceramic silicon rubber layer；6th, it is golden Belong to shielded layer；7th, the second mica layer；8th, the second water blocking tape layer；9th, polyolefin layer；10th, the first mica layer；11st, the first waterstop Layer；12nd, crosslinked polyetylene insulated layer；13rd, cooling fin.

Specific embodiment

Referring to Fig. 1-Fig. 3, the utility model provides a kind of low smoke and zero halogen sheath frequency-conversion power cable, leading including 3 Body 1 and 3 neutral conductors, 2,3 leading bodies 1 and 3 neutral conductors 2 are centrosymmetric setting, the leading body 1 and the outside of the neutral conductor 2 be enclosed with the first mica layer 10, in the outside of first mica layer 10, package is crosslinking poly- Ethylene insulating layer 12, the number of plies of first mica layer 10 is 2 layers, and 3 leading bodies 1 and 3 neutral conductors 2 use Cable core is formed with core type bundle strand, the outside of the cable core is equipped with stranding belting layer 4, and the outside of the stranding belting layer 4 is provided with Ceramic silicon rubber layer 5, the Ceramic silicon rubber layer 5 are provided with metal screen layer 6, the outside of the metal screen layer 6 outside Be provided with polyolefin layer 9, the cross section of 4 layers of the stranding belting layer is circular ring shape, the cable core and the stranding belting layer 4 it Between gap in be filled with expanding powder 3；Along the length direction of the polyolefin layer 9, on the outer surface of the polyolefin layer 9 between Every the cooling fin 13 for being provided with multiple annulars, the cooling fin 13 is made of polyolefin, the internal diameter of the cooling fin 13 with it is described The outer diameter of polyolefin layer 9 is adapted, and the outer diameter of the cooling fin 13 is bigger 3-5mm than the internal diameter of cooling fin 13.

The second mica layer 7, second mica layer 7 are additionally provided between the metal screen layer 6 and the polyolefin layer 9 The number of plies be 1 layer.

The distance between two described cooling fins 13 of arbitrary neighborhood are 3-5mm.

It is equipped with the first water blocking tape layer 11 between first mica layer 10 and the crosslinked polyetylene insulated layer 12, described the The number of plies of one water blocking tape layer 11 is 2 layers.

The second water blocking tape layer 8, second waterstop are provided between second mica layer 7 and the polyolefin layer 9 The number of plies of layer 8 is 1 layer.

The leading body 1 and the neutral conductor 2 are made of oxygen-free copper bar.

The utility model mainly solves the problems, such as 3 of low smoke and zero halogen sheath frequency-conversion power cable, respectively, the heat dissipation of cable Problem, the waterproof problem of cable and fireproofing of cable problem.

Heat dissipation problem about cable：

Cable is in itself in the case of energization by setting 13 cable of cooling fin in the outer surface of cable for the utility model Certain heat can be generated, thus need to as soon as possible be distributed the heat inside cable, and by setting cooling fin 13, increase Cable and extraneous contact area, so as to fulfill but heat purpose.

Having both as 3-5mm between cooling fin 13, the thickness of cooling fin 13 is 1-2mm, so that cooling fin 13 is not It can be special lofty so that the size Control of cooling fin 13 reduces discharge to cable and storage within the scope of smaller It influences.

Waterproof problem about cable：

The utility model is by setting the first water blocking tape layer 11 and the second water blocking tape layer 8, water blocking tape layer to have the energy of waterproof Power when cable occurs damaged, can prevent moisture from entering by water blocking tape layer, ensure power supply safety.

The setting of expanding powder 3, when there is broken hole on stranding belting layer 4, moisture can connect through the broken hole with expanding powder 3 It touches, expanding powder 3 will block the broken hole after expanding, and so as to prevent moisture from continuing to penetrate into, ensure power supply safety.

About fireproofing of cable problem：

First mica layer 10 and the second mica layer 7 all have the function of fireproof, and Ceramic silicon rubber layer 5 also has certain Fire resistance property.

Claims (6)

1. a kind of low smoke and zero halogen sheath frequency-conversion power cable, including 3 leading bodies and 3 neutral conductors, it is characterised in that：3 The leading body and 3 neutral conductors are centrosymmetric setting, the outside packet of the leading body and the neutral conductor The first mica layer is wrapped with, crosslinked polyetylene insulated layer is enclosed on the outside of first mica layer, first mica layer The number of plies is 2 layers, and 3 leading bodies and 3 neutral conductors use and form cable core, the outside of the cable core with core type bundle strand Equipped with stranding belting layer, it is provided with Ceramic silicon rubber layer on the outside of the stranding belting layer, outside the Ceramic silicon rubber layer Metal screen layer is provided with, polyolefin layer is provided on the outside of the metal screen layer, the cross section of the stranding belting layer is Circular ring shape is filled with expanding powder in the gap between the cable core and the stranding belting layer；Along the length of the polyolefin layer Direction is arranged at intervals with the cooling fin of multiple annulars on the outer surface of the polyolefin layer, and the cooling fin is by polyolefin system Into the internal diameter of the cooling fin and the outer diameter of the polyolefin layer are adapted, and the outer diameter of the cooling fin is than the internal diameter of cooling fin Big 3-5mm.

2. a kind of low smoke and zero halogen sheath frequency-conversion power cable according to claim 1, it is characterised in that：The metallic shield The second mica layer is additionally provided between layer and the polyolefin layer, the number of plies of second mica layer is 1 layer.

3. a kind of low smoke and zero halogen sheath frequency-conversion power cable according to claim 2, it is characterised in that：The two of arbitrary neighborhood The distance between a described cooling fin is 3-5mm.

4. a kind of low smoke and zero halogen sheath frequency-conversion power cable according to claim 3, it is characterised in that：First mica The first water blocking tape layer is equipped between layer and the crosslinked polyetylene insulated layer, the number of plies of first water blocking tape layer is 2 layers.

5. a kind of low smoke and zero halogen sheath frequency-conversion power cable according to claim 4, it is characterised in that：Second mica The second water blocking tape layer is provided between layer and the polyolefin layer, the number of plies of second water blocking tape layer is 1 layer.

6. a kind of low smoke and zero halogen sheath frequency-conversion power cable according to claim 5, it is characterised in that：The leading body and The neutral conductor is made of oxygen-free copper bar.