CN201965947U

CN201965947U - Control cable for nuclear power station

Info

Publication number: CN201965947U
Application number: CN2010206918550U
Authority: CN
Inventors: 韩惠福; 王敏; 李海荣; 朱崤; 朱玉萍; 赵朝贵
Original assignee: ANHUI SIAIT CABLES GROUP Co Ltd
Current assignee: ANHUI SIAIT CABLES GROUP Co Ltd
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2011-09-07
Anticipated expiration: 2020-12-30

Abstract

The utility model discloses a control cable for a nuclear power station, which comprises a plurality of groups of conductor groups and internal insulating layers, wherein the groups of conductor groups are formed by intertwisting a plurality of conductor wire cores into bundles; the groups of conductor groups are enwrapped by the internal insulating layers and external insulating layers; a plurality of filling ropes are arranged among the external insulating layers; the outer sides of the external insulating layers of the groups of conductor groups are enwrapped by an internal belting layer, a shielding layer, an internal sheath layer, an armored layer, an external belting layer and an external sheath layer in turn; the external insulating layers are made of halogen free flame retardant crosslinking polyolefin; the shielding layer is formed by weaving copper wires; and the internal sheath layer and the external sheath layer are made of low smoke halogen free flame retardant polyolefin. The control cable for the nuclear power station is halogen free, low smoke, flame retardant, environment-friendly and sanitary, has the advantages of high combustion light transmittance rate, lower conductivity, excellent bundle combustion flame retardant thermal property, good aging resistant and weathering resistant performance, good component compatibility and shock resistant performance, strong radiation resistant environmental performance and long service life, and still has an insulating performance and an electrical safety performance in the environment with different temperatures.

Description

A kind of control cable for nuclear power station

Technical field:

The utility model relates to the polar core field of cables, relates in particular to a kind of control cable for nuclear power station.

Background technology:

Cable is in order to transmit electricity (magnetic) energy, the wire product of information and the conversion of realization electromagnetic energy.Normally by the cable of several or at least two every group stranded similar ropes that form of several groups of leads, mutually insulated between every group of lead, and often be twisted into round a center, whole outside is surrounded by the cover layer of high-insulation.Electric wire mainly comprises bare wire, electromagnetic wire and electrical equipment and electrical insulated electric conductor, power cable, telecommunication cable and optical cable.

The polar core cable is generally used for guaranteeing scram under the outer earthquake load of nuclear power plant containment shell, containment is isolated, the emergent cooling of reactor core, reactor waste is derived, and prevents radioactive substance the 1E level K2 class and the K3 class rated voltage 0.6/1kv level control system of function such as environmental emission towards periphery.K2 class safe level: be installed in the containment vessel; K3 safe level: be installed in beyond the nuclear reactor.

The utility model content:

The purpose of this utility model provides a kind of control cable for nuclear power station, be used for to guarantee scram under the outer earthquake load of nuclear power plant containment shell, containment is isolated, the emergent cooling of reactor core, reactor waste is derived, and prevents radioactive substance the 1E level K2 class and the K3 class rated voltage 0.6/1kv level control system of function such as environmental emission towards periphery.

The technical solution of the utility model is as follows:

A kind of control cable for nuclear power station, comprise array conductor group, inner insulating layer, described array conductor group all has the stranded bunchy of several conductor thread cores to constitute, it is characterized in that: described array conductor group all is enclosed with inner insulating layer, external insulation layer outward, be provided with several gasket for packings between the described external insulation layer, the external insulation layer outside of described array conductor group is enclosed with interior belting layer, screen, inner restrictive coating, armour, outer belting layer, external sheath layer successively.

Described control cable for nuclear power station, it is characterized in that: it is the non-halogen flame-proof cross-linking polyolefin that described external insulation layer adopts material, described screen adopts the copper wire braiding to constitute, and it is low smoke halogen-free flame-retardant polyolefin that described inner restrictive coating, external sheath layer adopt material.

The utility model has the advantages that:

1. have characteristics such as Halogen, low cigarette, flame-proof environmental protection health;

2. the burning light transmittance of cable is big, and conductivity is less;

3. You Yi bunchy burns fire-retardant hot;

4. good ageing-resistant and weather ageing properties;

5. still have insulation property and electrical security under the different temperatures environment;

6. good component compatibility and shock resistance;

7. long service life, the length of service was not less than 50 years;

8. the radiation hardness environmental performance is strong.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Embodiment:

A kind of control cable for nuclear power station, comprise array conductor group 1, inner insulating layer 2, array conductor group 1 all has the stranded bunchy of several conductor thread cores to constitute, the array conductor group 1 outer inner insulating layer 2 that all is enclosed with, external insulation layer 3, be provided with several gasket for packings 4 between the external insulation layer 3, external insulation layer 3 outsides of array conductor group 1 are enclosed with interior belting layer 5 successively, screen 6, inner restrictive coating 7, armour 8, outer belting layer 9, external sheath layer 10, it is the non-halogen flame-proof cross-linking polyolefin that external insulation layer 3 adopts material, screen 6 adopts the copper wire braiding to constitute inner restrictive coating 7, it is low smoke halogen-free flame-retardant polyolefin that external sheath layer 10 adopts material.

Claims

1. control cable for nuclear power station, comprise array conductor group, inner insulating layer, described array conductor group all has the stranded bunchy of several conductor thread cores to constitute, it is characterized in that: described array conductor group all is enclosed with inner insulating layer, external insulation layer outward, be provided with several gasket for packings between the described external insulation layer, the external insulation layer outside of described array conductor group is enclosed with interior belting layer, screen, inner restrictive coating, armour, outer belting layer, external sheath layer successively.

2. control cable for nuclear power station according to claim 1, it is characterized in that: it is the non-halogen flame-proof cross-linking polyolefin that described external insulation layer adopts material, described screen adopts the copper wire braiding to constitute, and it is low smoke halogen-free flame-retardant polyolefin that described inner restrictive coating, external sheath layer adopt material.