CN207381120U

CN207381120U - A kind of fire-retardant copper core PVC-insulated cable of novel light

Info

Publication number: CN207381120U
Application number: CN201721402196.2U
Authority: CN
Inventors: 潘俊杉; 李戎
Original assignee: Nanchang Bayi Cable Co Ltd
Current assignee: Nanchang Bayi Cable Co Ltd
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2018-05-18
Anticipated expiration: 2027-10-27

Abstract

The utility model belongs to field of cable technology, more particularly to a kind of fire-retardant copper core PVC-insulated cable of novel light, including four copper cores, lapping layer, flame-retardant layer, inner sheath, armor, oversheath, hollow pipe, insulation strip and loss of weight layer, four copper cores are separated by criss-cross insulation strip in different sections, ensure that its insulating properties；Hollow pipe is equipped between copper core and the insulation strip of both sides, hollow pipe is tangent with copper core and insulation strip respectively, and hollow pipe reduces the space of filling, makes the weight saving of cable, but does not influence the stability of the first lapping layer inner wrap；And first is equipped with loss of weight layer between lapping layer and the second lapping layer, the weight for making cable is lighter；Flame-retardant layer is equipped between loss of weight layer and the first lapping layer, even if loss of weight layer loses under the high temperature conditions, can still protect internal copper core, loss of weight layer is played by supports support, when burning, can directly be come off, reduces internal loss.

Description

A kind of fire-retardant copper core PVC-insulated cable of novel light

Technical field

The utility model belongs to field of cable technology, and in particular to a kind of fire-retardant copper core polyvinyl chloride insulation electricity of novel light Cable.

Background technology

In recent years, with the rapid development of the industries such as global information, building, electric power, biography of the cable as signal, electric energy Defeated medium, the requirement to its performance is higher and higher, and the conductor and shielding material in cable are highdensity metal material, in order to Ensure the mechanical property of cable and the stability of signal transmission, the outside of core increases the proportion of cable added with multilayered structure Add, be unfavorable for cable frame arranged on eminence；And cable long-time service is often exposed to the weather, the gradual aging of outer layer can cause in the external world Power supply short circuit, equipment damage, in addition flame retardant property will necessarily be affected.

Utility model content

The utility model provides a kind of cable simple in structure, has the structure of lightweight and certain flame retardant property.

In order to solve the above-mentioned technical problem, the utility model provides a kind of fire-retardant copper core polyvinyl chloride insulation of novel light Cable, including four copper cores, lapping layer, flame-retardant layer, inner sheath, armor and oversheath, further include hollow pipe, insulation strip and Loss of weight layer, the insulation strip are " ten " font, and four copper cores are separated by insulation strip in different sections, the copper Hollow pipe is equipped between core and the insulation strip of both sides, hollow pipe is tangent with copper core and insulation strip respectively；The copper core Outside be coated with insulating layer；The lapping layer includes the first lapping layer and is coated on outside the first lapping layer second wrapped Layer, first lapping layer are coated on the outside of six roots of sensation copper core and insulation strip, first lapping layer and the second lapping layer it Between be equipped with loss of weight layer, between the loss of weight layer and the first lapping layer be equipped with flame-retardant layer；The inner sheath, armor and oversheath according to The secondary outside for being coated on the second lapping layer.

Preferably, it is equipped with flame retardant coating between the copper core and insulating layer.

Preferably, also it is equipped with shielded layer between the copper core and flame retardant coating.

Preferably, the insulating layer of the copper core and the insulation strip of both sides are tangent, the insulating layer and insulation strip it Between gap in be equipped with reinforcer.

Preferably, more non-touching supporting items are equipped in the loss of weight layer.

Preferably, the cross section of the supporting item is circular or fan-shaped hose.

Advantageous effect：

The cable of the utility model is equipped with four copper cores, is separated by criss-cross insulation strip in different sections It is interior, it ensure that its insulating properties；Be equipped with hollow pipe between copper core and the insulation strip of both sides, hollow pipe respectively with copper core and absolutely Edge strip is tangent, and hollow pipe reduces the space of filling, makes the weight saving of cable, but does not influence the first lapping layer inner wrap Stability；And first is equipped with loss of weight layer between lapping layer and the second lapping layer, the weight for making cable is lighter；Loss of weight layer and first Flame-retardant layer is equipped between lapping layer, even if loss of weight layer loses under the high temperature conditions, can still protect internal copper to greatest extent Core.

Flame retardant coating is additionally provided between copper core and insulating layer, remains to make cable work in external firing for a period of time；Copper Shielded layer is additionally provided between core and flame retardant coating, avoids the interference of garbage signal；The insulating layer of copper core and the insulation strip of both sides It is tangent, reinforcer is equipped in the gap between insulating layer and insulation strip, makes the mechanical property of cable by adding reinforcer It is guaranteed；More non-touching supporting items are equipped in loss of weight layer, loss of weight layer is played by supports support, alleviates cable Quality is separated the first covering and the second lapping layer by supporting item, and when burning, supporting item comes off, and reduces inside Loss；The cross section of supporting item is circular or fan-shaped, can act as good supporting role.

Description of the drawings

The structure diagram of Fig. 1 the utility model cables；

Attached drawing marks：1- copper cores, 2- shielded layers, 3- flame retardant coatings, 4- insulating layers, 5- hollow pipes, 6- reinforcers, 7- insulation Item, 8- losss of weight layer, 81- supporting items, the first lapping layers of 9-, 10- flame-retardant layers, the second lapping layers of 11-, 12- inner sheaths, 13- armourings Layer, 14- oversheaths.

Specific embodiment

The embodiment of the utility model is further illustrated below in conjunction with the accompanying drawings.

The fire-retardant copper core PVC-insulated cable of a kind of novel light as shown in Figure 1, including four copper cores 1, wrapped Layer, flame-retardant layer 10, inner sheath 12, armor 13 and oversheath 14 further include hollow pipe 5, insulation strip 7 and loss of weight layer 8, described exhausted Edge strip 7 is " ten " font, and four copper cores 1 are separated by insulation strip 7 in different sections, the copper core 1 and two Hollow pipe 5 is equipped between the insulation strip 7 of side, hollow pipe 5 is tangent with copper core 1 and insulation strip respectively；Outside the copper core 1 Portion is coated with insulating layer 4；The lapping layer includes the first lapping layer 9 and the second lapping layer being coated on outside the first lapping layer 9 11, first lapping layer 9 is coated on the outside of copper core 1 and insulation strip 7,9 and second lapping layer 11 of the first lapping layer Between be equipped with loss of weight layer 8, flame-retardant layer 10 is equipped between 8 and first lapping layer 9 of loss of weight layer；The inner sheath 12, armor 13 and oversheath 14 be coated on the outside of the second lapping layer 11 successively.

In this embodiment, flame retardant coating 3 is also equipped between the copper core 1 and insulating layer 4, the material of insulating layer 4 uses Polychloroethylene insulation material, flame retardant coating 3 can be made of fire-resistant silicon rubber or Mica tape；The copper core 1 and flame retardant coating 3 Between be also equipped with shielded layer 2, shielded layer 2 can be made of wire sheathing or aluminum composite belt；The insulating layer of the copper core 1 4 is tangent with the insulation strip 7 of both sides, and reinforcer 6, reinforcer 6 are equipped in the gap between the insulating layer 4 and insulation strip 7 It is tangent with the insulation strip of both sides 7 and insulating layer 4 respectively, it is ensured that the compactness of winding；Insulation strip in the first lapping layer 9 7 contact with its inner wall, and insulating layer 4 is with its inscribe, insulation strip 7 in the first lapping layer 9 and insulating layer 4, hollow pipe 5 plus Gap between strong part 6 is filled with polypropylene net band, wherein, insulation strip 7 is made of polyvinyl chloride, hollow pipe 5 can Think polyvinyl chloride hose, the material of reinforcer 6 is aramid fiber；More non-touching supporting items 81 are equipped in the loss of weight layer 8, Supporting item 81 is preferably arranged in symmetrical fashion, ensures that the mechanical performance of cable everywhere is consistent, supporting item 81 can be with winding Mode be arranged in loss of weight layer 8, in the present embodiment, the quantity of supporting item is 8 (as shown in the figure), can be at certain intervals Distance is arranged in a manner of winding in loss of weight layer 8, is circular hose in the cross section of the supporting item 81.10 material of flame-retardant layer Matter can be low smoke halogen-free flame-retardant polyolefin class；The material of armor 13 can be finer wire, and the material of oversheath 13 can be Polyvinyl chloride is made.

Specific embodiment of the utility model is described in detail above, but it is intended only as example, and this practicality is new Type is not restricted to above description specific embodiment.To those skilled in the art, it is any to the utility model carry out It equivalent modifications and substitutes also all among the scope of the utility model.Therefore, the spirit and scope of the utility model are not being departed from Lower made impartial conversion and modification, all cover in the scope of the utility model.

Claims

1. a kind of fire-retardant copper core PVC-insulated cable of novel light, including four copper cores (1), lapping layer, flame-retardant layers (10), inner sheath (12), armor (13) and oversheath (14), it is characterised in that：Further include hollow pipe (5), insulation strip (7) and Loss of weight layer (8), the insulation strip (7) are " ten " font, and four copper cores (1) are separated by insulation strip (7) different In section, be equipped with hollow pipe (5) between the copper core (1) and the insulation strip (7) of both sides, hollow pipe (5) respectively with copper wire Core (1) and insulation strip are tangent；The outside of the copper core (1) is coated with insulating layer (4)；The lapping layer includes the first lapping layer (9) and external the second lapping layer (11) of the first lapping layer (9) is coated on, first lapping layer (9) is coated on six roots of sensation copper wire The outside of core (1) and insulation strip (7) is equipped with loss of weight layer (8), institute between first lapping layer (9) and the second lapping layer (11) It states and flame-retardant layer (10) is equipped between loss of weight layer (8) and the first lapping layer (9)；The inner sheath (12), armor (13) and outer shield Set (14) is coated on the outside of the second lapping layer (11) successively.

2. a kind of fire-retardant copper core PVC-insulated cable of novel light as described in claim 1, it is characterised in that：The copper Flame retardant coating (3) is equipped between core (1) and insulating layer (4).

3. a kind of fire-retardant copper core PVC-insulated cable of novel light as claimed in claim 2, it is characterised in that：The copper Shielded layer (2) is also equipped between core (1) and flame retardant coating (3).

4. a kind of fire-retardant copper core PVC-insulated cable of novel light as claimed in claim 3, it is characterised in that：The copper The insulating layer (4) of core (1) and the insulation strip (7) of both sides are tangent, in the gap of the insulating layer (4) and insulation strip (7) Equipped with reinforcer (6).

5. the fire-retardant copper core PVC-insulated cable of a kind of novel light as described in Claims 1-4 any one, feature It is：More non-touching supporting items (81) are equipped in the loss of weight layer (8).

6. a kind of fire-retardant copper core PVC-insulated cable of novel light as claimed in claim 5, it is characterised in that：The branch The cross section of support member (81) is circular or fan-shaped hose.