CN2631011Y

CN2631011Y - Environmental-protection incombustible cross-linked cable

Info

Publication number: CN2631011Y
Application number: CN 03213662
Authority: CN
Inventors: 刘忠良
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-17
Filing date: 2003-06-17
Publication date: 2004-08-04
Anticipated expiration: 2013-06-17

Abstract

An incombustible environment friendly cross linking cable includes cabling wire core cabled by three or a plurality of insulated wire cores. The outside of the cabling wire core is also provided with a belting layer, an inner cushion layer, an armored layer and an outer sheath layer. The characters of the cross linking cable are that the gap between the cabling wire core and the belting layer is filled with an aluminum-plastic compound tube which is filled with 0.25Mpa-0.5Mpa N2 or CO2. The aluminum-plastic compound tube includes three layers. The material of the inner and outer layer is polyethylene or cross linking polyethylene and the central layer is aluminum layer which can adopt thinness structure and can also adopt reticular hole of equidistant distribution structure. When there is fire, and once the temperature of the surrounding environment reaches 180-300 centigrade, the polyethylene or cross linking polyethylene layer of the aluminum-plastic compound tube melts to lose the intensity. And the thin-layer aluminum or aluminum sheet of the micro-pore (non-transfixion type) bursts which causes that the gas in the tube sprays out and diffuses along the surface of the cable, which makes the concentration of the oxygen in the air decrease and the temperature and the heat decrease at the same time so as to protect cable from burning and make the flame extinguish itself, alarm or help fire fighters extinguish the fire. The cross linking cable has the function of safe fireproof in special grade and it can't pollute the environment and suffocate people. The electricity can be continuously supplied during the fire and the cable can be repaired to go on to put into use after the fire.

Description

The incombustible crosslinked cable of environment-friendly type

Technical field

The utility model relates to a kind of electronic product technical field, the incombustible crosslinked cable of specifically a kind of environment-friendly type.

Background technology

Present cross-linked power cable has classification such as common cable, flame retardant cable.Wherein, flame retardant cable is meant that mainly in the time not oversize when breaking out of fire, cable does not prolong combustion, or the limited length of burning.[flame retardant rating is judged according to IEC332-3 (1982) or domestic standard] is because flame retardant cable is based on the theory development of " can burn but burn limited ", so mainly depend on the development and utilization of fire retardant and high polymeric fire-retardant material.And the high polymer overwhelming majority all can be burnt, and have smog during burning, what have also will discharge toxic gas (mainly being hydrogen halide), though to low-smoke low-halogen and the development of low smoke and zero halogen aspect, but it is flammable after all, otherwise with degree environment is polluted, also make troubles to rescue work in case fire incident occurs, these all are that this research direction is difficult to overcome; At present also not when fire incident occurring, can not be burned except cable self, can also make flame from the incombustible crosslinked cable of environment-friendly type that puts out or helps the fire fighter to put out a fire.

Summary of the invention

The purpose of this utility model provides a kind of incombustible environment-friendly type crosslinked cable that lays in required place.

The purpose of this utility model is achieved in that it comprises three or thoroughly do away with edge core stranding one-tenth cable core together more, also be disposed with belting layer, inner cushion layer, armour and external sheath layer in the outside that becomes cable core, it is characterized in that: in the space that becomes between cable core and the belting layer, be filled with PAP, pass to the N of 0.25Mpa～0.5Mpa in the pipe ₂Or CO ₂Gas.

The PAP of the utility model indication comprises three layers, and the material of inside and outside layer is polyethylene or crosslinked polyethylene, and the intermediate layer is an aluminium lamination, and this aluminium lamination can adopt thin structure, also can adopt the netted microcellular structure that is equally spaced, and reticulated cell can connect, can not connect.

Advantage of the present utility model and good effect are when the condition of a fire occurs, when in case the ambient temperature around the cable reaches 180～300 ℃, the polyethylene of PAP or the fusion of crosslinked polyethylene layer, lose intensity, thin layer of aluminum or micropore place aluminium flake (non-through) spalling, gas goes out with certain pressure injection in the pipe, and fills the air diffusion around the cable meter course.Oxygen concentration in the surrounding air is descended, lower the temperature, fall heat simultaneously, the self-insurance cable does not burn, and flame is from putting out, report to the police or helping fire fighter's fire extinguishing.Because not burning does not exist the problem and the problem of environment pollution caused (the PE material self also block water nontoxic) that discharge dense smoke and toxic gas.And the local condition of a fire, local temperature rise, cable local segment gas jet can locally be repaired afterwards.Traditional cable often will be changed cable afterwards.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a cable cross-section schematic diagram of the present utility model;

To be described in further detail the utility model by example below, but three following core cross-linked power cable examples only are examples of the present utility model, do not represent the utility model institute restricted portion.

Embodiment

By shown in Figure 1, among the figure 2 is metallic conductor, arranged outside at metallic conductor 2 has conductor shield 3, insulating barrier 4, insulation screen copper strips screen 5 in addition, three such core strandings are called into cable core together, are disposed with belting layer 6, inner cushion layer 7, armour 8 and external sheath layer 9 in the outside that becomes cable core; Space between three cores and its belting layer is filled with PAP 1.Use when installing, PAP 1 is connected with the air accumulator in the external world in the both ends or one end of cable, adopts general getting final product under the most situation of connecting tube.

When making cable, PAP 1 can be finished according to common processes in the stranding operation as filler.

Claims

1. incombustible environment-friendly type crosslinked cable.It comprises three or thoroughly do away with edge core stranding one-tenth cable core together more, also be disposed with belting layer, inner cushion layer, armour and external sheath layer in the outside that becomes cable core, it is characterized in that: in the space that becomes between cable core and the belting layer, be filled with PAP, pass to the N of 0.25Mpa～0.5Mpa in the pipe ₂Or CO ₂Gas.

2. the construction of cable according to claim 1 is characterized in that insulated wire cores is meant three cores or multicore.

3. the construction of cable according to claim 1 is characterized in that PAP comprises three layers, and the material of inside and outside layer is polyethylene or crosslinked polyethylene, and the intermediate layer is an aluminium lamination, and it is the reticulated cell structure that is equally spaced that this aluminium lamination has a kind of structure.