CN205318918U

CN205318918U - Nuclear power cable

Info

Publication number: CN205318918U
Application number: CN201521141722.5U
Authority: CN
Inventors: 吴翰
Original assignee: Rich Electronic Science And Technology Co Ltd In Ward Jintan
Current assignee: CHANGZHOU JINTAN WODEFENG ELECTRONIC TECHNOLOGY Co.,Ltd.
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2016-06-15
Anticipated expiration: 2025-12-31

Abstract

The utility model belongs to the technical field of the power cable technique and specifically relates to a nuclear power cable, including three -strand cable conductor, cable conductor is 0.2mm and 0.1mm by the diameter aluminum stranded conductor forms along circumferencial direction NULL, per share cable conductor outsourcing has an insulating layer, and three -strand cable conductor is wrapping up armor protection jacket layer outward, it has fire -resistant silastic -layer to pack between three -strand cable conductor and the armor protection jacket layer, there is high temperature resistant gasket for packing in the middle of the fire -resistant silastic -layer, the outsourcing of armor protection jacket layer has the stainless steel weaving layer and does not have steamed fire -retardant layer, the utility model discloses a nuclear power cable, the design of fire -resistant silastic -layer has improved the fire resistance of cable, uses safelyr, have high temperature resistant gasket for packing in the middle of the fire -resistant silastic -layer, this design has improved the high temperature resistance of cable, the outsourcing of armor protection jacket layer has the stainless steel weaving layer and does not have steamed fire -retardant layer, and this design has improved the fire resistance of cable, has lengthened the life of cable, and use cost is low, and the safety in utilization is high.

Description

A kind of nuclear power cable

Technical field

This utility model relates to power cable technical field, especially a kind of nuclear power cable.

Background technology

Cables of nuclear power refers to that cables of nuclear power insulation and sheath are raw materials used, including the multiple kind such as plastics, rubber. Cable type is to be determined by the kind of cable. At present, employing IEEE383 and IEEE323 that the performance standard of cable for nuclear power station is more, the service life of cable should no less than 40 years, radioresistens energy, namely the minimum standards of the accumulated dose in 40 years is 2Mgy, running temperature is not less than 90 DEG C, additionally, cable also should have the characteristic such as good fire resistance and high-temperature resistant water steam, resistance to coolant.

According to safe class and cable laying occasion, IE level being divided into three kinds of cables of K1, K2 and K3 class, K1 class cable is to additionally arrange in shell, normal and can perform the cable of its predetermined function under earthquake load and under accident conditions and after accident; K2 class cable is to additionally arrange in shell, normal and can perform the cable of its predetermined function under earthquake load; K3 cable is to additionally arrange outside shell, normal and can perform the cable of its predetermined function under earthquake load and under accident conditions and after accident.

In recent years, development along with Nuclear Electricity, inefficient light-water reactor is progressively replaced by high speed breeder reactor, a lot of Nuclear Power Station nuclear fuel cycle and nuclear waste storage facility, and the traditional radiation resistant cable of the irradiation field that there is up to 300MGy in these facilities has been difficult to adapt to requirement.

Summary of the invention

In order to solve the problems referred to above, the utility model discloses a kind of nuclear power cable, it has good mechanical property, it is adaptable to the nuclear power cable of breeder reactor.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is as follows:

A kind of nuclear power cable, including three strands of cable conductors, described cable conductor is formed by the aluminum stranded conductor that diameter is 0.2mm and 0.1mm is along the circumferential direction alternately arranged; Being surrounded by insulating barrier outside per share cable conductor, three bursts of cable conductor outer wrapping armouring protection jacket layer, be filled with fire-resistant silicon rubber layer, have high temperature resistant gasket for packing in the middle of described fire-resistant silicon rubber layer between described three strands of cable conductors and armouring protection jacket layer;It is surrounded by rustless steel braid and halogen-free flameproof layer outside described armouring protection jacket layer.

Further, also has glass layer in the middle of described fire-resistant silicon rubber layer.

Further, the material of described insulating barrier is IXPE, and the thickness of described insulating barrier is 2.5-4.8mm.

Further, the thickness of described insulating barrier is 3.6mm.

Further, described armouring restrictive coating is thickness, and to be that the copper strips of 2-2.8mm is wrapped form, and copper strips is evenly arranged the heat radiation aperture that diameter is 320-480 μm.

Further, described armouring restrictive coating is thickness, and to be that the copper strips of 2.4mm is wrapped form, and copper strips is evenly arranged the heat radiation aperture that diameter is 360 μm.

The technical solution of the utility model is adopted to provide the benefit that:

Nuclear power cable of the present utility model, is filled with fire-resistant silicon rubber layer, the design of fire-resistant silicon rubber layer between three strands of cable conductors and armouring protection jacket layer, improves the fire resistance of cable, use safer; Having high temperature resistant gasket for packing in the middle of fire-resistant silicon rubber layer, this design improves the heat-resisting quantity of cable; Being surrounded by rustless steel braid and halogen-free flameproof layer outside armouring protection jacket layer, this design improves the anti-flammability of cable, extends the service life of cable, and use cost is low, safe to use.

Accompanying drawing explanation

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

In figure:

1 cable conductor, 2 aluminum stranded conductors, 3 insulating barriers, 4 armouring protection jacket layers, 5 fire-resistant silicon rubber layers, 6 high temperature resistant gasket for packings, 7 rustless steel braids, 8 halogen-free flameproof layers.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, it is further elucidated with this utility model, it should be understood that following detailed description of the invention is merely to illustrate this utility model rather than limits scope of the present utility model. It should be noted that, the word "front", "rear" of use is described below, direction that "left", "right", "up" and "down" refer in accompanying drawing, word " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.

As it is shown in figure 1, a kind of nuclear power cable, including three strands of cable conductors 1, described cable conductor 1 is formed by the aluminum stranded conductor 2 that diameter is 0.2mm and 0.1mm is along the circumferential direction alternately arranged; It is surrounded by insulating barrier 3 outside per share cable conductor 1, three bursts of cable conductor 1 outer wrapping armouring protection jacket layer 4, are filled with fire-resistant silicon rubber layer 5, the design of fire-resistant silicon rubber layer 5 between described three strands of cable conductors 1 and armouring protection jacket layer 4, improve the fire resistance of cable, use safer; Having high temperature resistant gasket for packing 6 in the middle of described fire-resistant silicon rubber layer 5, this design improves the heat-resisting quantity of cable; Being surrounded by rustless steel braid 7 and halogen-free flameproof layer 8 outside described armouring protection jacket layer 5, this design improves the anti-flammability of cable, extends the service life of cable, and use cost is low, safe to use.

Preferably, also has glass layer in the middle of described fire-resistant silicon rubber layer 5; Adopt this structure, improve the fire resistance of cable.

Preferably, the material of described insulating barrier 3 is IXPE, and the thickness of described insulating barrier 3 is 2.5-4.8mm; In the present embodiment, the thickness of insulating barrier 3 is preferably 3.6mm, adopts this structure, the good insulating effect of cable.

Preferably, described armouring restrictive coating 4 is thickness, and to be that the copper strips of 2-2.8mm is wrapped form, and copper strips is evenly arranged the heat radiation aperture that diameter is 320-480 μm; In the present embodiment, armouring restrictive coating 4 is that thickness is preferably that the copper strips of 2.4mm is wrapped to be formed, copper strips is evenly arranged the heat radiation aperture that diameter is 360 μm, adopt this structure, the protected effect of armouring restrictive coating 4 is good, the heat that cable is in use produced by the design of heat radiation aperture in time distributes, and improves the practicality of cable;Extend the service life of cable.

The above; it is only detailed description of the invention of the present utility model; protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should be encompassed within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim defines.

Claims

1. a nuclear power cable, it is characterised in that: including three strands of cable conductors, described cable conductor is formed by the aluminum stranded conductor that diameter is 0.2mm and 0.1mm is along the circumferential direction alternately arranged; Being surrounded by insulating barrier outside per share cable conductor, three bursts of cable conductor outer wrapping armouring protection jacket layer, be filled with fire-resistant silicon rubber layer, have high temperature resistant gasket for packing in the middle of described fire-resistant silicon rubber layer between described three strands of cable conductors and armouring protection jacket layer; It is surrounded by rustless steel braid and halogen-free flameproof layer outside described armouring protection jacket layer.

2. a kind of nuclear power cable according to claim 1, it is characterised in that: also have glass layer in the middle of described fire-resistant silicon rubber layer.

3. a kind of nuclear power cable according to claim 1, it is characterised in that: the material of described insulating barrier is IXPE, and the thickness of described insulating barrier is 2.5-4.8mm.

4. a kind of nuclear power cable according to claim 3, it is characterised in that: the thickness of described insulating barrier is 3.6mm.

5. a kind of nuclear power cable according to claim 1, it is characterised in that: described armouring restrictive coating is thickness, and to be that the copper strips of 2-2.8mm is wrapped form, and copper strips is evenly arranged the heat radiation aperture that diameter is 320-480 μm.

6. a kind of nuclear power cable according to claim 1, it is characterised in that: described armouring restrictive coating is thickness, and to be that the copper strips of 2.4mm is wrapped form, and copper strips is evenly arranged the heat radiation aperture that diameter is 360 μm.