CN201219042Y

CN201219042Y - Computer cable for nuclear power plant

Info

Publication number: CN201219042Y
Application number: CNU2008200246177U
Authority: CN
Inventors: 宋怀旭; 潘茂龙; 翟孟刚
Original assignee: SHANDONG HUALING CABLE CO Ltd
Current assignee: SHANDONG HUALING CABLE CO Ltd
Priority date: 2008-06-30
Filing date: 2008-06-30
Publication date: 2009-04-08
Anticipated expiration: 2018-06-30

Abstract

The utility model discloses a computer cable for nuclear power plant, in order to solve the problem that the computer cable for the present nuclear power plant has bad screening capacity, low abrasion resistance degree. The computer cable for nuclear power plant has advantages of simple structure, convenient use, and effectively increases the anti-jamming capability of the cable. The computer cable for nuclear power plant comprises multi-group conductors, one insulation layer is encased on the out wall of each group conductor and the out wall is set in a filling body, and a cable double-layer projection sleeve and a dissimilar cable double-layer screen are set on the filling body out wall; at the same time the two core conductors are one group and a dissimilar conductor double layer screening layer is set outside the conductors.

Description

Computer cable for nuclear power plant

Technical field

The utility model relates to a kind of cable, relates in particular to a kind of computer cable for nuclear power plant.

Background technology

The present used cable of nuclear power station is in cost consideration and mostly is single-layer shield individual layer sheath, this just causes the anti-interference and wear-resistant degree of cable not high, especially it requires higher to shield effectiveness the nuclear power station computer with cable, any problem can not occur, and existing single-layer shield individual layer protective-cover type structure can't meet the demands.

The utility model content

The purpose of this utility model is exactly not good with its screening ability of cable in order to solve present nuclear power station computer, problems such as wear-resistant degree is low, provide a kind of and have simple in structurely, easy to use, can effectively improve the computer cable for nuclear power plant of advantages such as cable antijamming capability.

For achieving the above object, the utility model adopts following technical scheme:

A kind of computer cable for nuclear power plant, conductor meets GB3956, and the outer wall wrap insulate layer of conductor also places in the low-smoke non-halogen flame-retardant obturator, and described obturator outer wall is provided with cable duplex sheath and heterogeneous cable double layer screen; Two core conductors are one group simultaneously, and their outside is provided with heterogeneous conductor double layer screen layer.

Described cable duplex sheath is made up of internal layer sheath and outer protective sleeve; Wherein, the internal layer sheath is the fluoroplastics sheath, and outer protective sleeve is the low-smoke halogen-free polyolefin sheath.

Described heterogeneous cable double layer screen comprises that wrapped total shielding of internal layer and outer braid always shield, and the wrapped total shield pack of internal layer is rolled on the low-smoke non-halogen flame-retardant obturator; Wherein the wrapped total shielding of internal layer is an aluminium-plastic tape, and the total shielding of outer braid is copper wire or tinned copper wire braiding.

Described insulating barrier comprises primary insulation and outer layer insulation; Wherein, primary insulation is crosslinked crosslinked polyetylene insulated layer; Outer layer insulation is the low-smoke halogen-free polyolefin insulating barrier.

Described heterogeneous conductor double layer screen layer comprises that wrapped branch shielding of internal layer and outer braid divide shielding; Wherein, the wrapped branch shielding of internal layer is aluminium-plastic tape, and outer braid divides shielding to be copper wire or tinned copper wire braiding.

Computer cable for nuclear power plant of the present utility model all adopts double hyer insulation, and internal layer is crosslinked cross-linked polyethylene insulating material, and skin is the low-smoke halogen-free polyolefin Insulation Material; Sheath adopts duplex sheath, and internal layer is fluoroplastics, and skin is the low-smoke halogen-free polyolefin protective cover material, and performance is with reference to other patents.

Its screen adopts double layer screen, that is: the aluminium-plastic tape shielding adds copper wire or tinned copper wire braid shielded, the same control cable of its superior performance

Double layer screen

Changed the single-layer shield of prior cable, the antijamming capability to external world that the shielding of double-deck different materials has strengthened cable has also increased the mechanical performance of cable, uses drainage thread to make shield effectiveness more reliable.

Duplex sheath

The protective action of the existing sheath in the past of duplex sheath has strengthened the weatherability of cable again, makes the environment for use of cable more extensive.

Aluminium-plastic tape

The wrapped shielding of aluminium-plastic tape contains again and moulds the band mechanical stress promptly by the shielding properties of aluminium strip, makes screen firm more, reliable.

The tinned copper wire braiding

Make the screen of cable have corrosion-resistant, oxidation resistant characteristic, in the useful life of the cable shield of increase, make the performance shielding action that screen more can be permanent.

Insulation Material adopts cross-linked polyethylene insulating material, has reduced dielectric loss in use, has strengthened electrical property, makes transmission signals more stable and undistorted, thereby ensures the effective transmission of cable.

The beneficial effects of the utility model are: simple in structure, cost is low, good in anti-interference performance, and weatherability is strong, and accommodative ability of environment is strong, reliable operation.

Description of drawings

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

Wherein, the 1. wrapped branch of internal layer shielding, 2. conductor, 3. primary insulation, 4. outer layer insulation, 5. outer braid divides shielding, 6. obturator, the 7. wrapped total shielding of internal layer, 8. outer braid always shields, 9. internal layer sheath, 10. outer protective sleeve.

Embodiment

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

Among Fig. 1, the outside of conductor 2 all is enclosed with primary insulation 3 and the low-smoke halogen-free polyolefin Insulation Material outer layer insulation 4 that cross-linked polyethylene insulating material is made.Each conductor 2 places obturator 6, is enclosed with successively at the outer wall of obturator 6 that the wrapped total shielding 7 of internal layer, outer braid always shield 8, internal layer sheath 9 and outer protective sleeve 10.Per two core conductors 2 are one group, and its outside is wrapped branch shielding 1 of wrapping inner layer and outer braid branch shielding 5 successively.

Wherein, aluminium-plastic tape is adopted in the wrapped branch shielding 1 of wrapped total shielding 7 of internal layer and internal layer, and outer braid divides shielding 5 and the total shielding 8 of outer braid to adopt copper wire or tinned copper wire braiding.Internal layer sheath 9 is the fluoroplastics sheath, and outer protective sleeve 10 is the low-smoke halogen-free polyolefin sheath.Primary insulation 3 is crosslinked polyetylene insulated layer; Outer layer insulation 4 is the low-smoke halogen-free polyolefin insulating barrier.

Claims

1. computer cable for nuclear power plant, it comprises multicore group conductor, and the outer wall wrap insulate layer of every conductor also places in the obturator, it is characterized in that, and described obturator outer wall is provided with cable duplex sheath and heterogeneous cable double layer screen; Per two core conductors are one group simultaneously, and their outside is provided with heterogeneous conductor double layer screen layer.

2. computer cable for nuclear power plant as claimed in claim 1 is characterized in that, described cable duplex sheath is made up of internal layer sheath and outer protective sleeve; Wherein, the internal layer sheath is the fluoroplastics sheath, and outer protective sleeve is the low-smoke halogen-free polyolefin sheath.

3. computer cable for nuclear power plant as claimed in claim 1 is characterized in that, described heterogeneous cable double layer screen comprises that wrapped total shielding of internal layer and outer braid always shield, and the wrapped total shield pack of internal layer is rolled on the obturator; Wherein the wrapped total shielding of internal layer is an aluminium-plastic tape, and the total shielding of outer braid is copper wire or tinned copper wire braiding.

4. computer cable for nuclear power plant as claimed in claim 1 is characterized in that described insulating barrier comprises primary insulation and outer layer insulation; Wherein, primary insulation is crosslinked polyetylene insulated layer; Outer layer insulation is the low-smoke halogen-free polyolefin insulating barrier.

5. computer cable for nuclear power plant as claimed in claim 1 is characterized in that, described heterogeneous conductor double layer screen layer comprises that wrapped branch shielding of internal layer and outer braid divide shielding; Wherein, the wrapped branch shielding of internal layer is aluminium-plastic tape, and outer braid divides shielding to be copper wire or tinned copper wire braiding.