CN207718929U - A kind of fireproof computer cable - Google Patents

Abstract

The utility model is related to a kind of fireproof computer cables.Fireproof computer cable includes shielding core group, and shielding core group includes insulated wire cores, and insulated wire cores are made of conductor and the ceramic organosilane crosslinked polyethylene layer being wrapped in outside conductor.Insulated wire cores are made of conductor and the ceramic organosilane crosslinked polyethylene layer being wrapped in outside conductor, ceramic organosilane crosslinked polyethylene not only has all properties of crosslinked polyethylene, it can be used as insulating materials, and it can gradually ceramics be hardened at a high temperature of 200 DEG C or more, hard shell is formed to be coated on conductor, realize the function of fire resisting, the flame retardant coating that there is no need to individually set up, and, ceramic silane crosslinked polyethylene is the common high molecular material of wires and cables industry, with higher cost performance, so that the structure of entire cable, outer diameter and weight are consistent substantially with non-refractory cable, cost is without obviously increasing, also it is convenient to be brought for construction, it suits large area to popularize and uses.

Description

A kind of fireproof computer cable

Technical field

The utility model is related to a kind of fireproof computer cables.

Background technology

Computer cable is a kind of novel product developed in recent years by control cable and signal cable, generally applicable In the industries such as electric power, metallurgy, chemical industry, the circuit between the automatic control system and instrument and meter that are used for based on electronic computer Connection.Traditional computer cable does not have fire resistance, in some special use occasions, for example, when making in scene of fire Used time, when cable needs the distribution fire-resisting cable with fire-extinguishing and lifesaving equally to need to provide certain normal work under fire Between, to ensure the operation of critical equipment equipment, while being also that fire-extinguishing and lifesaving etc. provides corresponding signal transmission support.For this There are some fireproof computer cables, insulating layer and fire resisting is provided on the outside of the conductor of fireproof computer cable on the market in situation Layer, the insulation and fire resisting of cable are realized with this, and still, which causes the construction of cable complicated, and shape is heavy, and cable is inadequate Softness causes conductor that can only select to meet GB/T in addition, the increase of construction of cable complexity also limits the size of conductor 3956 standards provide the first conductor, cause to a certain extent inconvenient for use.

Utility model content

Fire resisting function and simple in structure, light weight fire resisting calculating can be realized the purpose of this utility model is to provide a kind of Electric cable.

To achieve the above object, a kind of technical solution of fireproof computer cable of the utility model is：1, a kind of cable, packet It includes at least two shielding core groups and the shielding core group is wrapped in interior oversheath, the shielding core group includes extremely Lack two insulated wire cores and the insulated wire cores are wrapped in interior sub-shield, the insulated wire cores are by conductor and package Ceramic organosilane crosslinked polyethylene layer outside conductor is constituted.

The insulated wire cores are made of conductor and the ceramic organosilane crosslinked polyethylene layer being wrapped in outside conductor, ceramic Organosilane crosslinked polyethylene not only has all properties of crosslinked polyethylene, can be used as insulating materials, and 200 DEG C with It can gradually ceramics be hardened at a high temperature of upper, form hard shell and be coated on conductor, realize the function of fire resisting.In conductor peripheral hardware Set the dual function that fire resisting and insulation can be achieved at the same time in ceramic organosilane crosslinked polyethylene layer, the fire resisting that there is no need to individually set up Layer has higher sexual valence moreover, ceramic silane crosslinked polyethylene is the common high molecular material of wires and cables industry Than so that structure, outer diameter and the weight of entire cable are consistent substantially with non-refractory cable, and cost also can without obviously increasing It is convenient to be brought for construction, suits large area to popularize and uses.Meanwhile because it is not necessary that flame retardant coating, the size choosing of conductor is separately provided Select range bigger, conductor 1, which can select to meet 3956 standards of GB/T, provides the 1st kind, the 2nd kind or the 5th kind copper conductor.

2, on the basis of 1：The inner side and outer side of the sub-shield is respectively arranged with separation layer and split screen in separated-shielding Cover outer separation layer.Improve the insulation effect between sub-shield and its medial and lateral structure.

3, on the basis of 2：Separation layer is made of the mylar tape of wrapped one layer and one layer of longitudinal wrap in the separated-shielding.

4, on the basis of 2：The sub-shield is proof copper-wire braided shielded layer or copper strips lapped shielding layer.

5, in 1-4 any one on the basis of：The oversheath includes external sheath layer, and the external sheath layer is wear-resisting type Halogen-free and low-smoke flame-retardant polyolefin layer.

6, in 1-4 any one on the basis of：The oversheath includes external sheath layer and is arranged in external sheath layer Total shielded layer of side, total shielded layer are proof copper-wire braided shielded layer or copper strips lapped shielding layer.

7, on the basis of 6：The total shielding separation layer being made of pp embossing belts is provided on the inside of total shielded layer.

Description of the drawings

Fig. 1 is a kind of structure chart of fireproof computer cable specific embodiment of the utility model；

In figure：1, conductor；2, ceramic organosilane crosslinked polyethylene layer；3, separation layer in separated-shielding；4, sub-shield；5, divide The outer separation layer of shielding；6, gasket for packing；7, separation layer is always shielded；8, total shielded layer；9, external sheath layer.

Specific implementation mode

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

The specific embodiment of a kind of fireproof computer cable of the utility model, as shown in Figure 1, including insulated wire cores, institute It states insulated wire cores to be made of conductor 1 and the ceramic organosilane crosslinked polyethylene layer 2 being wrapped in outside conductor 1, two insulated wire cores Dextrad wraps up sub-shield 4 and constitutes shielding core group on the outside after twisting together, wherein the inside of sub-shield 4 and outer Side is respectively arranged with the outer separation layer of separation layer 3 and separated-shielding in separated-shielding 5.Four shielding core group dextrad are with no more than 20 times Lay ratio stranding constitutes the cable core of cable together, wherein the gap between shielding core group is filled with gasket for packing 6, outer layer of cable core Cladding is total successively from inside to outside shields separation layer 7, total shielded layer 8 and external sheath layer 9, total shielding separation layer 7, total shielded layer 8 And external sheath layer 9 collectively forms the oversheath of fireproof computer cable, in other embodiments, the oversheath can also be by Other structures form, as long as can protect cable core.

In said structure, insulated wire cores are by conductor 1 and the ceramic organosilane crosslinked polyethylene layer being wrapped in outside conductor 1 2 are constituted, and ceramic organosilane crosslinked polyethylene not only has all properties of crosslinked polyethylene, can be used as insulating materials, And can gradually ceramics be hardened at a high temperature of 200 DEG C or more, it forms hard shell and is coated on conductor 1, realize fire resisting Function.The dual function that fire resisting and insulation can be achieved at the same time in ceramic organosilane crosslinked polyethylene layer 2 is set outside conductor 1, therefore Without the flame retardant coating individually set up, moreover, ceramic silane crosslinked polyethylene is the common macromolecule of wires and cables industry Material, low manufacture cost have higher cost performance so that structure, outer diameter and the weight of entire cable are the same as non-refractory cable base Originally it is consistent, for cost without obviously increasing, it is convenient also to be brought for construction, suits large area to popularize and uses.

Meanwhile because it is not necessary that flame retardant coating, the size selection range bigger of conductor 1 is separately provided, conductor 1 can select to meet 3956 standards of GB/T provide the 1st kind, the 2nd kind or the 5th kind copper conductor.

In addition, the sub-shield 4 is proof copper-wire braided shielded layer or copper strips lapped shielding layer, when sub-shield 4 is copper wire When woven shield, brass wire diameter is not less than 0.10mm, and count is not less than 80%, when sub-shield 4 is the wrapped shielding of copper strips When layer, copper strips thickness is not less than 0.05mm, and wrapped average cap rate is not less than 15%, ensures that the shielding of sub-shield 4 is imitated with this Fruit.

Separation layer 3 and the outer separation layer 5 of separated-shielding in separated-shielding is respectively set in the inner side and outer side of sub-shield 4, improves and divides Insulation effect between shielded layer 4 and its medial and lateral structure, wherein separation layer 3 is wrapped one layer and one layer of longitudinal wrap in separated-shielding Mylar tape, ensure there are enough electrical isolation effects between insulated wire cores and sub-shield 4；Separation layer 5 outside separated-shielding For one layer wrapped of mylar tape, it is ensured that sub-shield 4 is isolated with its outboard structure.

Total shielded layer 8 is also proof copper-wire braided shielded layer or copper strips lapped shielding layer, when total shielded layer 8 is proof copper-wire braided When shielded layer, copper wire minimum nominal diameter is 0.15mm, and count is not less than 80%, when total shielded layer 8 is the wrapped shielding of copper strips When layer, copper strips thickness is not less than 0.05mm, and wrapped average cap rate is not less than 15%, ensures that the shielding of total shielded layer 8 is imitated with this Fruit.

Total shielding separation layer 7 of 8 inside of total shielded layer is one layer of wrapped PP embossing belt, and cap rate is not less than 15%, with this Ensure the isolation effect between total shielded layer 8 and its inside structure.

The gasket for packing 6 filled is low smoke, zero halogen environmental protection gasket for packing 6 between shielding core group, external sheath layer 9 be oxygen index (OI) not Wear-resisting type halogen-free and low-smoke flame-retardant polyolefin less than 32, has good physical mechanical property and fire protecting performance.

In said structure, two insulated wire cores dextrad wrap up sub-shield 4 and constitute screen on the outside after twisting together Core group is covered, in other embodiments, the quantity of insulated wire cores can be adjusted according to actual needs, for example, setting one, Three, four etc..Four shielding core group dextrad are constituted the cable core of cable with the lay ratio stranding no more than 20 times together, In other embodiment, the quantity of insulated wire cores can also be adjusted according to actual needs, for example, setting one, two, three It is a, five, six etc., optimum range is in 2-37.

Claims (7)

1. a kind of fireproof computer cable, it is characterised in that：Including at least two shielding core groups and by the shielding core Group is wrapped in interior oversheath, and the shielding core group includes at least two insulated wire cores and is wrapped in the insulated wire cores Interior sub-shield, the insulated wire cores are made of conductor and the ceramic organosilane crosslinked polyethylene layer being wrapped in outside conductor.

2. fireproof computer cable according to claim 1, it is characterised in that：The inner side and outer side of the sub-shield point It is not provided with separation layer and the outer separation layer of separated-shielding in separated-shielding.

3. fireproof computer cable according to claim 2, it is characterised in that：Separation layer is by wrapped one in the separated-shielding Layer and the mylar tape of one layer of longitudinal wrap are constituted.

4. fireproof computer cable according to claim 2, it is characterised in that：The sub-shield shields for proof copper-wire braided Layer or copper strips lapped shielding layer.

5. according to the fireproof computer cable described in any claim in claim 1-4, it is characterised in that：The oversheath Including external sheath layer, the external sheath layer is wear-resisting type halogen-free and low-smoke flame-retardant polyolefin layer.

6. according to the fireproof computer cable described in any claim in claim 1-4, it is characterised in that：The oversheath Including external sheath layer and the total shielded layer being arranged on the inside of external sheath layer, total shielded layer is proof copper-wire braided shielded layer or copper Band lapped shielding layer.

7. fireproof computer cable according to claim 6, it is characterised in that：Be provided on the inside of total shielded layer by Total shielding separation layer that pp embossing belts are constituted.