CN205943507U

CN205943507U - Control cable for nuclear power station

Info

Publication number: CN205943507U
Application number: CN201620977324.5U
Authority: CN
Inventors: 韩惠福; 李兵; 朱崤; 李�真; 鲁求智; 冷岩峰; 赵树磊; 陈文龙; 王海萍
Original assignee: SIAIT CABLE CO Ltd
Current assignee: SIAIT CABLE CO Ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-02-08
Anticipated expiration: 2026-08-30

Abstract

The utility model discloses a control cable for nuclear power station, including conductor, insulating layer, inner sheath and oversheath, the insulating layer is the double -deck crowded package structure altogether of irradiation cross -linking polyethylene the inner insulating layer and fire -retardant radiation cross -linking polyolefin external insulation layer, and conductor and insulating layer constitute insulation core, and a plurality of insulation core strand into the cable core, and cable core gap is equipped with the filling layer, the cable core outward in proper order overlapping have the polyester area to wind the covering, woven zinc -plated soft copper wire woven shield, woven shield has the inner sheath around covering, crowded package around covering, shielding are outer in the overlapping shielding outward in proper order, has woven the tinned copper wire between the inside and outside sheath and has woven armor, its outer crowded package thermoset polyolefin oversheath. The utility model discloses have and does not have steamed, low cigarette, fire -retardant, heat -resisting, anti -interference, ageing resistance, anti radiation characteristic, excellent electric, machinery, environmental protection still have, can wide application place control system inside and outside nuclear power station 1E level shell.

Description

A kind of control cable for nuclear power station

Technical field：

This utility model is related to a kind of control cable for nuclear power station, belongs to technical field of electric wires and cables.

Background technology：

, as a kind of emerging energy, coal resources are limited at home for nuclear industry, seriously polluted in the case of, Chinese Nuclear Power Industry will obtain fast development, and it is more and more extensive, as in nuclear power station that matched cable for nuclear power station is employed The control cable for nuclear power station of outer transmission of control signals is the control system nerve lifeblood of nuclear power system, to Chinese nuclear industry Development plays vital effect.

Because cable for nuclear power station has to run 60 years under nuclear radiation environment, this requires the structure of cable, material Performance and the stability of production technology.Development due to domestic nuclear power cable is started late, the technical merit of each producer Uneven, add that the requirement to cable for nuclear power station in recent years is brought up to 60 years by 40 years original service lifes, cause perhaps Many producers due to technical force limited it is impossible to design, produce the cable for nuclear power station product meeting technical requirements.For safety Cables most in shell adopts imported product, also has partial cables to adopt import, but import cable is expensive outside shell, raw The product cycle is long, is unfavorable for the development of Chinese Nuclear Power technical industry.

Content of the invention：

For overcoming the defect of prior art, the purpose of this utility model is to provide a kind of control cable for nuclear power station, tool There are Halogen, low cigarette, fire-retardant, heat-resisting, the anti-interference, characteristic such as aging resistance, radioprotective, also there is excellent electric, mechanical, ring simultaneously The functions such as guarantor, can be widely applied to place control system inside and outside nuclear power station 1E level shell, product performance index is excellent.

This utility model solves technical problem and adopts the following technical scheme that：

A kind of control cable for nuclear power station, including conductor, insulating barrier, inner sheath and oversheath, described insulating barrier is irradiation Crosslinked polyethylene inner insulating layer and fire-retardant cross-linking radiation polyolefin external insulation layer double-layer coextrusion extrude structure, described conductor and insulation Layer constitutes insulated wire cores, and some insulated wire cores are twisted into cable core, and cable core gap is provided with packed layer, overlapping wrapped successively outside cable core There is polyester belt lapping layer, be woven with tin plating soft copper silk woven shield, outside described woven shield, overlap is surrounded with shielding successively Interior lapping layer, shield outer lapping layer, be extruded with inner sheath, be woven between inner sheath and oversheath tinned copper wire weave armouring Layer, extrudes LSOH anti-flaming radiation hardness cross-linking radiation thermosetting polyolefin oversheath outside braiding armor.

Described conductor selects stranded conductor structure, and conductor material is tin-coated copper.

Described packed layer is halogen-free and low-smoke flame-retardant polyolefin gasket for packing.

Described woven shield count is not less than 80%.

In described shielding, lapping layer is a strata ester twining package tape；Shielding outer lapping layer is one layer of halogen-free and low-smoke flame-retardant polyolefin Twining package tape.

Described inner sheath is thermosetting halogen-free and low-smoke flame-retardant polyolefin material.

Described braiding armor count is not less than 80%.

Compared with the prior art, the beneficial effects of the utility model are embodied in：

1st, adopt strands tinned copper conductor structure, substantially increase softness and the corrosion resistance of cable, with When guarantee that cable keeps excellent electric property in running.

2nd, IXPE interior insulation and cross-linking radiation polyolefin external insulation are adopted after electron beam irradiation, machinery Performance and temperature resistant grade greatly improves it is ensured that cable has excellent electric property, mechanical performance, heat resistance and anti-flammability Can, external insulation bilayer expressing technique can meet the insulating properties of cable, and meet the flame-retarding characteristic of cable simultaneously.

3rd, armor selects tinned copper wire braiding structure, and count is not less than 80%, not only plays the effect of shielding, and And substantially increase the bending softness of cable, it is effectively protected the damage of inner sheath simultaneously, improve the use longevity of cable Life.

4th, oversheath is using extruding LSOH anti-flaming radiation hardness cross-linking radiation thermosetting polyolefin jacket material, its material Novel environment friendly, and there is excellent Halogen, low cigarette, flame-retarding characteristic and radiation resistance, fully meet making of cable for nuclear power station With requiring.

Brief description：

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

Wherein, 1- conductor, 2- inner insulating layer, 3- external insulation layer, 4- packed layer, 5- lapping layer, 6- woven shield, 7- screen Cover interior lapping layer, 8- shields outer lapping layer, 9- inner sheath, and 10- weaves armor, 11- oversheath.

Specific embodiment：

Below by way of specific embodiment, and the utility model is described in further detail to combine accompanying drawing.

As Fig. 1, a kind of control cable for nuclear power station, including the stranded conductor 1 of multiply high conduction performance tinned copper wire, Insulating barrier, inner sheath 9 and oversheath 11, described insulating barrier includes IXPE inner insulating layer 2 and fire-retardant cross-linking radiation Polyolefin external insulation layer 3, described interior insulation 2 and external insulation layer 3 extrude structure using double-layer coextrusion, described conductor 1 and insulating barrier Constitute insulated wire cores, some insulated wire cores are twisted into cable core, and cable core gap is provided with halogen-free and low-smoke flame-retardant polyolefin packed layer 4, Outside cable core, overlap is surrounded with polyester belt lapping layer 5, is woven with tin plating soft copper silk woven shield 6 successively, and count is not less than 80%；7, one layer of LSOH anti-flaming polyene of lapping layer in overlapping wrapped one layer of polyester belt shielding successively outside described woven shield Hydrocarbon band shields outer lapping layer 8, is extruded with thermosetting halogen-free and low-smoke flame-retardant polyolefin inner sheath 9, between inner sheath 9 and oversheath 11 It is woven with tinned copper wire braiding armor 10, count is not less than 80%；LSOH anti-flaming is extruded outside braiding armor 10 Radiation hardness cross-linking radiation thermosetting polyolefin oversheath 11.

In being embodied as, corresponding structure setting and material select to be respectively：

Conductor 1 is to form using multiply high conduction performance tinned copper wire is stranded, conductor layer any surface finish, impulse- free robustness, anaerobic Change, no tin layers scratch and coming off；

Inner insulating layer 2 is to be extruded in, by IXPE insulant, the inner insulating layer being formed on conductor, and with outer Insulating barrier is extruded together, using Electron-beam irradiation technology；

External insulation layer 3 is to be extruded in, by cross-linking radiation polyolefin, the external insulation layer being formed on inner insulating layer, and and interior insulation Layer is extruded, together using Electron-beam irradiation technology；

Packed layer 4 adopts halogen-free and low-smoke flame-retardant polyolefin gasket for packing, fills rounding；

Lapping layer 5 adopts polyester twining package tape overlap wrapped outside cable core；

Woven shield 6 adopts tin plating soft copper silk braiding structure, and count is not less than 80%；

In shielding, lapping layer 7 adopts polyester twining package tape overlap wrapped outside woven shield；

Shielding outer lapping layer 8 adopts halogen-free and low-smoke flame-retardant polyolefin twining package tape overlap wrapped outside interior lapping layer polyester belt Face；

Inner sheath 9 adopts thermosetting halogen-free and low-smoke flame-retardant polyolefin inner sheath, using Electron-beam irradiation technology；

Armor 10 adopts tinned copper wire braiding structure, and count is not less than 80%；

Oversheath 11 using extruding thermosetting LSOH anti-flaming radiation resistance polyolefine, using Electron-beam irradiation technology.

The cable of this kind of structure design has Halogen, low cigarette, fire-retardant, heat-resisting, the anti-interference, characteristic such as aging resistance, radioprotective, Also there is the functions such as excellent electric, mechanical, environmental protection simultaneously, can be widely applied to place inside and outside nuclear power station 1E level shell and control system System.

Claims

1. a kind of control cable for nuclear power station, including conductor (1), insulating barrier, inner sheath (9) and oversheath (11), its feature exists In：Described insulating barrier is IXPE inner insulating layer (2) and fire-retardant cross-linking radiation polyolefin external insulation layer (3) is double-deck altogether Extrude structure, described conductor (1) and insulating barrier constitute insulated wire cores, and some insulated wire cores are twisted into cable core, cable core gap It is provided with packed layer (4), outside cable core, overlap is surrounded with polyester belt lapping layer (5), is woven with tin plating soft copper silk woven shield successively (6), described woven shield (6) outward successively overlap be surrounded with lapping layer in shielding (7), shield outer lapping layer (8), be extruded with interior Sheath (9), is woven with tinned copper wire braiding armor (10), braiding armor (10) between inner sheath (9) and oversheath (11) Extrude outward LSOH anti-flaming radiation hardness cross-linking radiation thermosetting polyolefin oversheath (11).

2. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Described conductor (1) is selected stranded Conductor structure, conductor material is tin-coated copper.

3. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Described packed layer (4) is Halogen Low-smoke flame-proof polyolefin gasket for packing.

4. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Described woven shield (6) is compiled Knit density and be not less than 80%.

5. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Lapping layer (7) in described shielding It is a strata ester twining package tape；Shielding outer lapping layer (8) is one layer of halogen-free and low-smoke flame-retardant polyolefin twining package tape.

6. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Described inner sheath (9) is thermosetting Property halogen-free and low-smoke flame-retardant polyolefin material.

7. a kind of control cable for nuclear power station according to claim 1 it is characterised in that：Described braiding armor (10) is compiled Knit density and be not less than 80%.