CN102347110B - Method for manufacturing cable for high-temperature gas cooled reactor - Google Patents

Method for manufacturing cable for high-temperature gas cooled reactor Download PDF

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Publication number
CN102347110B
CN102347110B CN 201110173103 CN201110173103A CN102347110B CN 102347110 B CN102347110 B CN 102347110B CN 201110173103 CN201110173103 CN 201110173103 CN 201110173103 A CN201110173103 A CN 201110173103A CN 102347110 B CN102347110 B CN 102347110B
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extrusion
meant
cable
finished product
silver
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CN102347110A (en
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宋强
李广元
沈卢东
盛业武
陈光高
沈智飞
栾渊明
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Sunway Co Ltd
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Sichuan Star Cable Co Ltd
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Abstract

The invention discloses a method for manufacturing a cable for a high-temperature gas cooled reactor, and the method the following process flows: material selection-wire drawing-conductor twisting-finished product manufacturing-finished product packaging storage. The method is characterized by comprising annealing-extrusion of an insulating layer-extrusion of an outer sheath, wherein the annealing step means that an annealing silver plating machine is used for plating silver with the thickness of 6-20mu m on a copper monofilament surface; and the extrusion of the insulating layer and the extrusion of the outer sheath mean that screws with a high compression ratio of 3.5:(1-5.0):1 are used, extrusion equipment is provided with a good cooling device, the extrusion processing temperature of the extrusion equipment is controlled between 360 DEG C and 420 DEG C, a pipe-extrusion mould with the high extension ratio is selected as an extrusion mould, and the selected mating extension ratio is 30-50. The cable manufactured by the method provided by the invention has the characteristics of strong ambient temperature adaptability, high conductivity and strong electromagnetic compatibility.

Description

A kind of cable making method that is used for HTGR
Technical field
The present invention relates to the cable technology field, relate generally to a kind of cable making method that is used for HTGR.
Background technology
HTGR is made cooling agent with helium, and the nuclear reactor HTGR that outlet temperature is high adopts coated particle fuel, makes moderator with graphite.Core exit temperature is 850 ~ 1000 ℃, even higher.HTGR has that the heat efficiency is high by 40% ~ 41%, and burnup is dark, and is maximum up to 20MWd/t uranium, and conversion is than advantage such as high 0.7 ~ 0.8.Because the helium chemical stability is good, good heat-transfer, and also it is little to induce radioactivity, can waste heat safety be taken out of after the shutdown, and security performance is good.The cable of using at HTGR CRDM rod position measuring system, stepping motor and driver; Require high; Can be high at 250 ℃ of high temperature, humidity, relative humidity 90%, normal operation there are under the condition of certain radiation dosage 60 years, promptly cable need reach the requirement of nuclear safe level 1E level K1; And this occasion use cable to lay the space less, require cable that higher conductivity and less external diameter are arranged, so that laying installation.In this type occasion, can cause heavy losses to equipment, life, property safety in case have an accident.So various device, control system, measuring system are required all very strict, can't permit least bit mishap, and it is just higher to control the requirement of cable of these equipment, will rectificate useful life.At present, the cable that use in existing traditional core power station is to adopt zinc-plated soft copper conductor as master core, and conductivity is low, and conducting effect is poor, and temperature resistant grade also can only reach 125 ℃.
Publication number is CN 1760996; A kind of production method of fire resistant communication cable was disclosed for the Chinese patent document of 2006.04.19 in open day; The production method that it is characterized in that said cable is: the first step, select PC base-material polyethylene and two kinds of cable insulation materials of crosslinking agent for use, just by being fit to high polyethylene and a kind of suitable crosslinking agent of low-k, low dielectric loss angle, voltage withstand class that real core is fit to the physical blowing extrusion again; Second goes on foot, above-mentioned polyethylene and crosslinking agent is mixed on mixing roll according to a certain ratio; The 3rd step, after guaranteeing that each component mixes, extruding pelletization; The 4th step, with this polyethylene particles that has added crosslinking agent extrusion insulation heart yearn that on the physical blowing board, foams; The insulation heart yearn of the 5th step, this foaming extrusion is that the electron irradiation of 100KGY is crosslinked to produce through irradiation dose; The 6th the step, outside crosslinked good foamed insulation heart yearn, make screen; By operation, so far, accomplished the whole process of production of fire resistant communication cable outside the 7th step, the completion at last.Still there is following shortcoming in this technical scheme: make the coaxial cable of insulating material through crosslinked polyethylene foamed, temperature resistant grade can only reach 105 ℃.Can't satisfy adaptability, particularly relate to and be higher than the above hot environment of 200 degree Celsius, cause the insulating barrier easy ageing, influence cable useful life ambient temperature.Therefore, the cable of this technical scheme production can't reach the requirement of nuclear safe level 1E level K1.
Summary of the invention
The present invention is intended to can't satisfy ambient temperature to the cable of prior art manufacturing; Especially the adaptive defective that is higher than the above hot environment of 200 degree Celsius; A kind of cable making method that is used for HTGR is provided; It is strong to adopt the produced cable of this method to have environmental adaptability, and conductivity is high, the characteristics that electromagnetic compatibility is strong.
In order to realize the foregoing invention purpose, the technical scheme that the present invention adopts is:
A kind of cable making method that is used for HTGR comprises selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, it is characterized in that: also comprise annealing-insulating barrier extrude-oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 6~20 μ m silver at copper monofilament surface plating thickness; Described insulating barrier is extruded with oversheath and is extruded the screw rod that is meant employing high compression ratio 3.5:1~5.0:1; Extrusion equipment has good cooling device; It is extruded processing temperature and is controlled at 360~420 ℃, and its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 30~50.
Described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
Described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 10~40mm.
The present invention is in the twisted wire process; Adopt the doubling mould in 1.0~4.0mm aperture, than the little 2~5%d of doubling mould size of the common twisted wire of same specification, wherein d is a mould sizing area diameter; Make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
The present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
The present invention adopts the crowded pipe mold of high draw ratio configuration, its objective is and satisfies the polyetheretherketonematerials materials processing characteristics, is generally 30-50 because polyetheretherketonematerials materials gets draw ratio.
Draw ratio according to the invention is meant the annulus area of plastics outside die orifice and the ratio that is coated on the annulus area on the electric wire, i.e. the ratio of mould heart die sleeve formed gap sectional area and goods nominal thickness sectional area.
Compared with prior art, beneficial effect of the present invention mainly shows the following aspects:
One, insulating barrier and outer jacket are polyether-ether-ketone, make that cable can normally operation in ambient temperature-10 ℃~250 ℃ scopes, have very strong environmental adaptability; And because polyether-ether-ketone has excellent mechanical and physical performance, higher specific insulation, and good thermal stress cracking and radiation resistance, insulating barrier and outer jacket thickness can reduce, and it is little by 20~40% that the outside diameter of cable is compared other similar cables.Prolonged useful life.
Two, conductor adopts the silver-plated copper conductor, and its conductivity improves 3~5% than zinc-plated soft copper conductor.
Three, cable is provided with silver-coated copper wire braiding sub-shield and silver-coated copper wire weaves total screen; Has better electromagnetic compatibility; Play good effect to suppressing electromagnetic interference, effectively controlled the interference between the external world and the core, improved accuracy Equipment Control, measurement; Reliability is high, and the cost of operation control is low.
Four, the present invention is in the twisted wire process; Adopt the doubling mould in 1.0~4.0mm aperture, than the little 2~5%d of doubling mould size of the common twisted wire of same specification, wherein d is a mould sizing area diameter; Make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
Five, the present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
Six, the present invention adopts the crowded pipe mold of high draw ratio configuration, can satisfy the polyetheretherketonematerials materials processing characteristics, is generally 30-50 because polyetheretherketonematerials materials gets draw ratio.
Description of drawings
Fig. 1 is a manufacturing process flow diagram of the present invention.
Embodiment
Embodiment 1
A kind of cable making method that is used for HTGR comprises selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, also comprise annealing-insulating barrier extrude-oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 6 μ m silver at copper monofilament surface plating thickness; Described insulating barrier is extruded with oversheath and is extruded the screw rod that is meant employing high compression ratio 3.5:1; Extrusion equipment has good cooling device; It is extruded processing temperature and is controlled at 360 ℃, and its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 30.
Described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
Described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 10mm.
The present invention adopts the doubling mould in 1.0mm aperture in the twisted wire process, make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
The present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
The present invention adopts the crowded pipe mold of high draw ratio configuration, its objective is and satisfies the polyetheretherketonematerials materials processing characteristics, is generally 30 because polyetheretherketonematerials materials gets draw ratio.
Draw ratio according to the invention is meant the annulus area of plastics outside die orifice and the ratio that is coated on the annulus area on the electric wire, i.e. the ratio of mould heart die sleeve formed gap sectional area and goods nominal thickness sectional area.
Embodiment 2
A kind of cable making method that is used for HTGR comprises selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, also comprise annealing-insulating barrier extrude-oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 10 μ m silver at copper monofilament surface plating thickness; Described insulating barrier is extruded with oversheath and is extruded the screw rod that is meant employing high compression ratio 4.0:1, and extrusion equipment has good cooling device, and it extrudes processing temperature is 380 ℃, and its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 35.
Described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
Described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 20mm.
The present invention adopts the doubling mould in 2.0mm aperture in the twisted wire process, make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
The present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
The present invention adopts the crowded pipe mold of high draw ratio configuration, its objective is and satisfies the polyetheretherketonematerials materials processing characteristics, is generally 35 because polyetheretherketonematerials materials gets draw ratio.
Draw ratio according to the invention is meant the annulus area of plastics outside die orifice and the ratio that is coated on the annulus area on the electric wire, i.e. the ratio of mould heart die sleeve formed gap sectional area and goods nominal thickness sectional area.
Embodiment 3
A kind of cable making method that is used for HTGR comprises selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, also comprise annealing-insulating barrier extrude-oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 15 μ m silver at copper monofilament surface plating thickness; Described insulating barrier is extruded with oversheath and is extruded the screw rod that is meant employing high compression ratio 4.5:1, and extrusion equipment has good cooling device, and it extrudes processing temperature is 400 ℃, and its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 45.
Described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
Described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 30mm.
The present invention adopts the doubling mould in 3.0mm aperture in the twisted wire process, make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
The present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
The present invention adopts the crowded pipe mold of high draw ratio configuration, its objective is and satisfies the polyetheretherketonematerials materials processing characteristics, is generally 45 because polyetheretherketonematerials materials gets draw ratio.
Draw ratio according to the invention is meant the annulus area of plastics outside die orifice and the ratio that is coated on the annulus area on the electric wire, i.e. the ratio of mould heart die sleeve formed gap sectional area and goods nominal thickness sectional area.
Embodiment 4
A kind of cable making method that is used for HTGR comprises selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, also comprise annealing-insulating barrier extrude-oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 20 μ m silver at copper monofilament surface plating thickness; Described insulating barrier is extruded with oversheath and is extruded the screw rod that is meant employing high compression ratio 5.0:1, and extrusion equipment has good cooling device, and it extrudes processing temperature is 420 ℃, and its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 50.
Described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
Described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 40mm.
The present invention adopts the doubling mould in 4.0mm aperture in the twisted wire process, make the conductor thread core outward appearance rounding, tight, bright and clean of strand system, and help insulating extrude effect.
The present invention adopts the screw rod of high compression ratio, its objective is in order to satisfy polyetheretherketonematerials materials to be difficult to plastify good particularity, and makes it fully plastify compacting, can not produce pore because of high temperature.
The present invention adopts the crowded pipe mold of high draw ratio configuration, its objective is and satisfies the polyetheretherketonematerials materials processing characteristics, is generally 50 because polyetheretherketonematerials materials gets draw ratio.
Draw ratio according to the invention is meant the annulus area of plastics outside die orifice and the ratio that is coated on the annulus area on the electric wire, i.e. the ratio of mould heart die sleeve formed gap sectional area and goods nominal thickness sectional area.
The invention is not restricted to the foregoing description, but all should fall within the claim protection range of the present invention.

Claims (3)

1. cable making method that is used for HTGR; Comprise selecting materials-wire drawing-conductor is stranded-finished product manufacturing-finished product packing warehouse-in technological process, it is characterized in that: between wire drawing and finished product manufacturing, also comprise annealing-polyether-ether-ketone insulating barrier extrude-the polyether-ether-ketone oversheath extrudes manufacturing process flow; Said annealing is meant that annealed silver plating machine is 6~20 μ m silver at copper monofilament surface plating thickness; Described polyether-ether-ketone insulating barrier is extruded with the polyether-ether-ketone oversheath and is extruded the screw rod that is meant employing high compression ratio 3.5:1~5.0:1; Extrusion equipment has good cooling device; It is extruded processing temperature and is controlled at 360~420 ℃; Its extrusion die is selected the crowded pipe mold of high draw ratio configuration for use, and the apolegamy draw ratio is 30~50.
2. according to the said a kind of cable making method that is used for HTGR of claim 1, it is characterized in that: described wire drawing is meant that a plurality of wire-drawing dies by electrician's round copper rod process drawing device are drawn into the copper monofilament.
3. according to the said a kind of cable making method that is used for HTGR of claim 1, it is characterized in that: described conductor is stranded to be meant by the multiply silver-gilt copper wire strandedly according to concentric type, and the twisting pitch scope is 10~40mm.
CN 201110173103 2011-06-24 2011-06-24 Method for manufacturing cable for high-temperature gas cooled reactor Active CN102347110B (en)

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Publication number Priority date Publication date Assignee Title
CN103489531A (en) * 2013-08-21 2014-01-01 远程电缆股份有限公司 High conductivity copper conductor manufacturing process
CN103680769A (en) * 2013-11-28 2014-03-26 湖州龙鹰电线电缆有限公司 Cable manufacturing process
CN104200924A (en) * 2014-08-27 2014-12-10 安徽顺驰电缆有限公司 Production technology of electronic cable
CN104167251B (en) * 2014-09-03 2017-01-25 中利科技集团股份有限公司 High-voltage connecting cable provided with ultra-soft aluminum conductor and used in electric automobile and manufacturing method of high-voltage connecting cable

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CN201804596U (en) * 2010-08-11 2011-04-20 四川明星电缆股份有限公司 Cable for gas-cooled reactor
CN201812531U (en) * 2010-08-11 2011-04-27 四川明星电缆股份有限公司 Cable for high-temperature gas-cooled reactor

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CN201804596U (en) * 2010-08-11 2011-04-20 四川明星电缆股份有限公司 Cable for gas-cooled reactor
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