CN106373650A - Coaxial cable for third generation of nuclear power plant and manufacturing technology - Google Patents
Coaxial cable for third generation of nuclear power plant and manufacturing technology Download PDFInfo
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- CN106373650A CN106373650A CN201610979128.6A CN201610979128A CN106373650A CN 106373650 A CN106373650 A CN 106373650A CN 201610979128 A CN201610979128 A CN 201610979128A CN 106373650 A CN106373650 A CN 106373650A
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- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 238000005516 engineering process Methods 0.000 title description 3
- 239000010410 layer Substances 0.000 claims abstract description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000004020 conductor Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 37
- 239000003063 flame retardant Substances 0.000 claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 30
- 229920000098 polyolefin Polymers 0.000 claims abstract description 27
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 22
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 18
- 239000010949 copper Substances 0.000 claims abstract description 18
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011888 foil Substances 0.000 claims abstract description 6
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 23
- 238000007689 inspection Methods 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 19
- 241000108463 Hygrophila <snail> Species 0.000 claims description 15
- 238000000137 annealing Methods 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 12
- 238000005491 wire drawing Methods 0.000 claims description 12
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- 239000005030 aluminium foil Substances 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 238000012946 outsourcing Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 238000009666 routine test Methods 0.000 claims description 5
- 238000009954 braiding Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000002355 dual-layer Substances 0.000 abstract 1
- -1 halogen-free Substances 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 10
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
- H01B11/1808—Construction of the conductors
- H01B11/1813—Co-axial cables with at least one braided conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/187—Sheaths comprising extruded non-metallic layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- Insulated Conductors (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses a coaxial cable for the third generation of nuclear power plant. An insulating layer, an outer conductor, a protection layer, a waterproof layer and a thermal protection shielding layer are sequentially arranged between an inner conductor and an outer sheath; a fifth-class twisted round tinned conductor or a single solid copper conductor is adopted as the inner conductor; the insulating layer is made of a high-density polyethylene material; the outer conductor is knitted by an electrician soft round tinned bare copper wire of which the diameter is 0.15-0.25mm; the protection layer is formed by dual-layer overlapping wrapping of a polyester tape; the waterproof layer is formed by extruding a special K3-class low-smoke halogen-free flame-retardant polyolefin sheath material for nuclear power of meeting the life requirement of 60 years; the thermal protection shielding layer is formed by single-layer overlapping wrapping of an aluminum foil tape; and the outer sheath is formed by extruding the special K3-class low-smoke halogen-free flame-retardant polyolefin sheath material for nuclear power of meeting the life requirement of 60 years. The coaxial cable has the characteristics of good electrical transmission performance, anti-electromagnetic interference and waterproofness, and is low-smoke, halogen-free, flame-retardant, long in designed service life, high in safety and reliability and the like.
Description
Technical field
The present invention relates to nuclear grade cable design and manufacturing technology field is and in particular to a kind of generation Ⅲ nuclear power station coaxial cable
And manufacturing process.
Background technology
At present, China's construction of nuclear power station comes into fast-developing period it is contemplated that arriving the year two thousand twenty bottom, and China runs and building
Nuclear power generating sets be up to 100 sets about.Compared with for traditional energy, nuclear power is a kind of economic, energy of cleaning, but nuclear power station
The Nuclear Power Accident moment occurring in the developing history of over half a century reminds people, and the safety problem of nuclear power station is most important.Generation
The tight safety measure that various countries of boundary take to nuclear power station, coaxial cable, as " neural " of nuclear power station, requires also more next to it
Stricter.
The nuclear power station of at present China's operation is substantially second filial generation nuclear power station, to coaxial cable no clear and definite performance requirement and
Projected life requires；Future will actively promote large-scale promotion and the outlet at generation Ⅲ nuclear power station, Typical Representative have acp1000 and
No. Hua Longyi, the projected life of nuclear power coaxial cable was required as 60 years.
According to relevant criterion and Technical specification it is desirable to nuclear power coaxial cable cable must possess good electrical communications spy
Property, anti-emi characteristics, mechanical property, excellent anti-aging property (thermo-oxidative ageing), low-smoke non-halogen flame-retardant characteristic etc., the 3rd
Just arise at the historic moment for used in nuclear power station coaxial cable.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, electric transmission performance is good, anti-electromagnetism to provide one kind to have
The features such as interference, waterproof, low-smoke non-halogen flame-retardant, design service life length (more than 60 years), security reliability are high, greatly improves core
The generation Ⅲ nuclear power station coaxial cable of the security reliability of power station communications.
The purpose of the present invention is achieved through the following technical solutions: a kind of generation Ⅲ nuclear power station coaxial cable, it
Including inner wire and outermost oversheath, between inner wire to oversheath, it is disposed with insulating barrier, outer conductor, protection
Layer, waterproof layer and Thermal protection screen layer；
Described inner wire adopts the 5th class stranded circle tinned conductor or adopts simple solid copper conductor；
Described insulating barrier is made using meeting the high density polyethylene (HDPE) material that yd/t 760-1995 specifies, insulation thickness meets
Particular technique specifications specify；
Described outer conductor adopts the soft circle of the electrician tin plating bare copper wire braiding of a diameter of 0.15mm～0.25mm, braid angle, fills out
Fill coefficient and material meets gb/t 14864-2013 standard regulation, count is not less than 90%；
Described protective layer adopts the wrapped formation of polyester belt double-layer overlapping；
Described waterproof layer is squeezed by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years
Bag forms；
Described Thermal protection screen layer is wrapped using the wrapped single overlays of aluminium foil strip, and the wrapped rate of putting up is not less than 15%；
Described oversheath is squeezed by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years
Bag forms.
It is preferred that, for the inner wire made using the 5th class stranded circle tinned conductor, its nominal diameter is
0.9mm, conductor structure 19/0.18mm.
It is preferred that, the insulation nominal thickness 1.0mm of described insulating barrier, after extrusion, nominal diameter is 3.0mm.
It is preferred that, the nominal thickness of described waterproof layer is 0.6mm.
It is preferred that, it is disposed with metal screen layer between described waterproof layer to Thermal protection screen layer, be extruded in
Inner sheath outside metal screen layer, aluminium foil strip wrapped on sheath, oversheath nominal thickness be 0.9mm, thinnest point thickness is not
Less than 0.7mm, the final external diameter of cable is not more than 9.8mm.
It is preferred that, for the inner wire using simple solid copper conductor, its nominal diameter 0.585mm.
It is preferred that, the insulation nominal thickness 1.6mm of described insulating barrier, after extrusion, nominal diameter is 3.7mm, described
The nominal thickness of waterproof layer is 0.7mm.
It is preferred that, aluminium foil strip wrapped on waterproof layer, oversheath nominal thickness be 1.3mm, thinnest point thickness is not
Less than 1.0mm, the final external diameter of cable is not more than 9.5mm.
A kind of generation Ⅲ nuclear power station coaxial cable manufacturing process, it comprises the steps:
S1: wire drawing and annealing: by the oxygen-free copper bar of outsourcing through multiple tracks wire drawing and annealings such as big drawing machine, Medium drawing mach ine and little machine drawings,
Obtain the simple solid inner wire of nominal diameter 0.585mm, inspection conductor resistance and extensibility；
S2: insulation extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.6mm, thinnest point thickness is not less than 1.4mm,
Fire inspection voltage: ac 7000v；
S3: braided outer conductor: using tinned copper wire braid shielded, filament diameter is 0.15mm, and count is not less than
90%；
S4: wrapped protective layer: using the wrapped formation of polyester belt double-layer overlapping for 0.04mm for the nominal thickness；
S5: extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.7mm；
S6: wrapped Thermal protection screen:, the number of plies/tape thickness/bandwidth: 1/0.05/25mm wrapped using aluminum foil composite tape overlap, take
Lid rate is not less than 15%；
S7: extrude oversheath: using white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness
1.3mm, average thickness is not less than nominal thickness, and thinnest point thickness is not less than 1.0mm；
S8: product inspection: routine test is carried out to finished cable；
S9: packaging and storage: put into warehouse for finished product after qualified finished cable end socket, packaging, Data Enter by checking.
A kind of generation Ⅲ nuclear power station coaxial cable manufacturing process, it comprises the steps:
S1: wire drawing and annealing is tin plating: the oxygen-free copper bar of outsourcing is moved back through multiple tracks wire drawings such as big drawing machine, Medium drawing mach ine and little machine drawings
Fire, tin plating after annealing, obtain the tinned copper wire of nominal diameter 0.18mm, inspection copper wire resistance and extensibility；
S2: inner wire synnema: synnema forms at twice by 19/0.18mm tinned copper wire, inspection conductor diameter and structure；
S3: insulation extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.0mm, thinnest point thickness is not less than 0.9mm,
Fire inspection voltage: ac 5000v；
S4: braided outer conductor: using tinned copper wire braid shielded, filament diameter is 0.15mm, and count is not less than
90%；
S5: wrapped protective layer: using the wrapped formation of polyester belt double-layer overlapping for 0.04mm for the nominal thickness；
S6: extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；
S7: braid shielded: be 0.15mm tinned copper wire braid shielded using filament diameter, count is not less than 90%；
S8: extrude sheath: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；
S9: wrapped Thermal protection screen:, the number of plies/tape thickness/bandwidth: 1/0.05/25mm wrapped using aluminum foil composite tape overlap, take
Lid rate is not less than 15%；
S10: extrude oversheath: using white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness
0.9mm, average thickness is not less than nominal thickness, and thinnest point thickness is not less than 0.7mm；
S11: product inspection: routine test is carried out to finished cable；
S12: packaging and storage: put into warehouse for finished product after qualified finished cable end socket, packaging, Data Enter by checking.
The invention has the beneficial effects as follows:
1st, for 50 ω coaxial cables, conductor by 19 0.18mm tinned copper wire according to 1+6+12 mode synnema and
Become, synnema is carried out at twice, for the first time by 1+6 root copper wire synnema, restraint again for the second time outside 12 copper wires, outermost layer copper wire and
The strand of secondary outer layer copper wire is to contrary；Thus on the premise of ensureing conductor softness, improve stability and the compactness of conductor, with
When reduce conductor diameter；
2nd, waterproof layer is extruded by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years
Form, there is waterproof, softness, aging life-span length, heat oxygen aging resistance, resistance to radiation aging, low cigarette, Halogen, fire-retardant etc. a series of prominent
Go out advantage；
3rd, for 50 ω coaxial cables, in the outer braided metal screen layer of waterproof layer, three are formed together with inner wire, outer conductor
Coaxial electrical system, by by its effective grounding, can greatly reduce outside electromagnetic interference；
4th, for 50 ω coaxial cables, sheath is by the special low-smoke non-halogen flame-retardant of k3 class nuclear power meeting life requirements in 60 years
Polyolefin jacket material extrudes and forms, have aging life-span length, heat oxygen aging resistance, resistance to radiation aging, low cigarette, Halogen, fire-retardant etc. one
Serial outstanding advantages；
5th, oversheath is extruded by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years
Form, have: aging life-span length, heat oxygen aging resistance, resistance to radiation aging, good mechanical performance, waterproof, wear-resisting the features such as.
Brief description
Fig. 1 is the structural representation of the present invention 50 ω coaxial cable；
Fig. 2 is the manufacturing process flow diagram of the present invention 75 ω coaxial cable；
Fig. 3 is the manufacturing process flow diagram of the present invention 50 ω coaxial cable；
In figure, 1- inner wire, 2- insulating barrier, 3- outer conductor, 4- protective layer, 5- waterproof layer, 6- metal screen layer, shield in 7-
Layer, 8- Thermal protection screen layer, 9- oversheath.
Specific embodiment
Below in conjunction with the accompanying drawings technical scheme is described in further detail, but protection scope of the present invention is not limited to
Described below.
As shown in FIG. 1 to 3, a kind of generation Ⅲ nuclear power station coaxial cable, it includes inner wire and outermost outer
Sheath, is disposed with insulating barrier, outer conductor, protective layer, waterproof layer and Thermal protection screen layer between inner wire to oversheath；
Described inner wire adopts the 5th class stranded circle tinned conductor or adopts simple solid copper conductor；
Described insulating barrier is made using meeting the high density polyethylene (HDPE) material that yd/t 760-1995 specifies, insulation thickness meets
Particular technique specifications specify；
Described outer conductor adopts the soft circle of electrician of a diameter of 0.15mm～0.25mm (outer conductor diameter 0.2mm is more excellent) tin plating
Bare copper wire weaves, and braid angle, activity coefficient and material meet gb/t 14864-2013 standard regulation, and count is not less than
90%；
Described protective layer adopts the wrapped formation of polyester belt double-layer overlapping；
Described waterproof layer is squeezed by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years
Bag forms；
Described Thermal protection screen layer is wrapped using the wrapped single overlays of aluminium foil strip, and the wrapped rate of putting up is not less than 15%；
Described oversheath is by the special low-smoke and halogen-free flame retardant polyolefin jacket of white k3 class nuclear power meeting life requirements in 60 years
Material extrudes and forms.
Preferably for the inner wire made using the 5th class stranded circle tinned conductor, its nominal diameter is 0.9mm, leads
Body structure 19/0.18mm.Conductor is formed according to the mode synnema of 1+6+12 by the tinned copper wire of 19 0.18mm, and synnema is at twice
Carry out, for the first time by 1+6 root copper wire synnema, restraint 12 copper wires of outside, outermost layer copper wire and time outer layer copper wire for the second time again
Twist to contrary.
Preferably, the insulation nominal thickness 1.0mm of described insulating barrier, after extrusion, nominal diameter is 3.0mm.
Preferably, the nominal thickness of described waterproof layer is 0.6mm.
Preferably, described waterproof layer is disposed with metal screen layer between Thermal protection screen layer, is extruded in metal screen
Cover the inner sheath outside layer, aluminium foil strip is wrapped, and oversheath nominal thickness is 0.9mm on sheath, and thinnest point thickness is not less than
0.7mm, the final external diameter of cable is not more than 9.8mm.
Preferably for the inner wire using simple solid copper conductor, its nominal diameter 0.585mm, conductor structure 19/
0.18mm.Conductor is formed according to the mode synnema of 1+6+12 by the tinned copper wire of 19 0.18mm, and synnema is carried out at twice, and first
Secondary 1+6 root copper wire synnema is restrainted 12 copper wires of outside for the second time again, the strand of outermost layer copper wire and time outer layer copper wire is to contrary.
Preferably, the insulation nominal thickness 1.6mm of described insulating barrier, after extrusion, nominal diameter is 3.7mm, described waterproof layer
Nominal thickness be 0.7mm.
Preferably, aluminium foil strip wrapped on waterproof layer, oversheath nominal thickness is 1.3mm, and thinnest point thickness is not less than
1.0mm, the final external diameter of cable is not more than 9.5mm.
My company is manufactured experimently with coaxial cable to generation Ⅲ nuclear power station, specific as follows:
(1) insulation, sheath material select
Using meeting the high density polyethylene (HDPE) material (hdpe) that yd/t 760-1995 specifies, its performance meets table 1 and advises for insulation
Fixed.Waterproof layer, sheath and oversheath are using the special low smoke halogen-free flame-retardant polyolefin of k3 class nuclear power meeting life requirements in 60 years
Protective cover material, its performance meets table 2 and specifies.
Table 1 insulant performance requirement
Shield and jacket material performance requirement in table 2
(2) manufacturing process
The manufacturing process flow of (1) 50 ω coaxial cable is as shown in Figure 3:
As shown in figure 3, its manufacturing process is summarized as follows: (1) wire drawing and annealing is tin plating: by oxygen-free copper bar (8mm) warp of outsourcing
Cross the multiple tracks wire drawing and annealings such as big drawing machine, Medium drawing mach ine and little machine drawing, tin plating after annealing, obtain the tin-coated copper of nominal diameter 0.18mm
Silk, inspection copper wire resistance and extensibility；(2) inner wire synnema: synnema forms at twice by 19/0.18mm tinned copper wire, inspection
Conductor diameter and structure；(3) insulate extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.0mm, thinnest point thickness is not little
In 0.9mm, fire inspection voltage: ac 5000v；(4) braided outer conductor: using tinned copper wire braid shielded, filament diameter is
0.15mm, count is not less than 90%；(5) wrapped protective layer: using the polyester belt double-layer overlapping for 0.04mm for the nominal thickness
Wrapped formation；(6) extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；(7)
Braid shielded: be 0.15mm tinned copper wire braid shielded using filament diameter, count is not less than 90%；(8) extrude interior shield
Layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；(9) wrapped Thermal protection screen: adopt aluminum
Paper tinsel composite band overlap is wrapped, the number of plies/tape thickness/bandwidth: 1/0.05/25mm, and the rate of putting up is not less than 15%；(10) extrude oversheath:
Using white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.9mm, average thickness is not less than nominally thick
Degree, thinnest point thickness is not less than 0.7mm；(11) product inspection: routine test is carried out to finished cable, pilot project such as table 3 institute
Show；(12) packaging and storage: put into warehouse for finished product after qualified finished cable end socket, packaging, Data Enter by checking.
The manufacturing process flow of (2) 75 ω coaxial cables is illustrated in fig. 2 shown below:
As shown in Fig. 2 its manufacturing process is summarized as follows: (1) wire drawing and annealing: by the oxygen-free copper bar (8mm) of outsourcing through excessive
The multiple tracks wire drawing and annealings such as machine drawing, Medium drawing mach ine and little machine drawing, obtain the simple solid inner wire of nominal diameter 0.585mm, check copper
Conductor resistance and extensibility；(2) insulate extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.6mm, thinnest point thickness is not
Less than 1.4mm, fire inspection voltage: ac 7000v；(3) braided outer conductor: using tinned copper wire braid shielded, filament diameter is
0.15mm, count is not less than 90%；(4) wrapped protective layer: using the polyester belt double-layer overlapping for 0.04mm for the nominal thickness
Wrapped formation；(5) extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.7mm；(6)
Wrapped Thermal protection screen:, the number of plies/tape thickness/bandwidth: 1/0.05/25mm wrapped using aluminum foil composite tape overlap, the rate of putting up is not less than
15%；(7) extrude oversheath: the white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material of employing, nominal thickness 1.3mm,
Average thickness is not less than nominal thickness, and thinnest point thickness is not less than 1.0mm；(8) product inspection: finished cable is carried out with customary examination
Test, pilot project is as shown in table 3；(9) packaging and storage: put into checking after qualified finished cable end socket, packaging, Data Enter
Warehouse for finished product.
(3) test of product performance
My company is checked with coaxial cable to the generation Ⅲ nuclear power station of trial-production, and performance indications are as shown in table 3.According to
Assay, the generation Ⅲ nuclear power station coaxial cable that my company manufactures and designs complies fully with relevant criterion and requires, and can meet
Customer demand.
Table 3 generation Ⅲ nuclear power station coaxial cable performance test
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention it is noted that all
Any modification, equivalent and improvement of being made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of generation Ⅲ nuclear power station coaxial cable it is characterised in that: it includes inner wire and outermost oversheath, interior
Conductor is disposed with insulating barrier, outer conductor, protective layer, waterproof layer and Thermal protection screen layer between oversheath；
Described inner wire adopts the 5th class stranded circle tinned conductor or adopts simple solid copper conductor；
Described insulating barrier is made using meeting the high density polyethylene (HDPE) material that yd/t 760-1995 specifies, insulation thickness meets specifically
Technical specification specifies；
Described outer conductor adopts the soft circle of the electrician tin plating bare copper wire braiding of a diameter of 0.15mm～0.25mm, braid angle, filling system
Number and material meet gb/t 14864-2013 standard regulation, and count is not less than 90%；
Described protective layer adopts the wrapped formation of polyester belt double-layer overlapping；
Described waterproof layer extruded by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years and
Become；
Described Thermal protection screen layer is wrapped using the wrapped single overlays of aluminium foil strip, and the wrapped rate of putting up is not less than 15%；
Described oversheath extruded by the special low-smoke and halogen-free flame retardant polyolefin jacket material of k3 class nuclear power meeting life requirements in 60 years and
Become.
2. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 1 it is characterised in that: for using the 5th class
The inner wire that stranded circle tinned conductor is made, its nominal diameter is 0.9mm, conductor structure 19/0.18mm.
3. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 2 it is characterised in that: described insulating barrier exhausted
Edge nominal thickness 1.0mm, after extrusion, nominal diameter is 3.0mm.
4. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 3 it is characterised in that: the mark of described waterproof layer
Thickness is called 0.6mm.
5. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 1 it is characterised in that: described waterproof layer to heat
It is disposed with metal screen layer, the inner sheath being extruded in outside metal screen layer, including aluminium foil strip is wrapped between guard shield layer
On sheath, oversheath nominal thickness is 0.9mm, and thinnest point thickness is not less than 0.7mm, and the final external diameter of cable is not more than 9.8mm.
6. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 1 it is characterised in that: for using single reality
The inner wire of heart copper conductor, its nominal diameter 0.585mm.
7. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 6 it is characterised in that: described insulating barrier exhausted
Edge nominal thickness 1.6mm, after extrusion, nominal diameter is 3.7mm, and the nominal thickness of described waterproof layer is 0.7mm.
8. a kind of generation Ⅲ nuclear power station coaxial cable according to claim 7 it is characterised in that: aluminium foil strip wrapped anti-
On water layer, oversheath nominal thickness is 1.3mm, and thinnest point thickness is not less than 1.0mm, and the final external diameter of cable is not more than 9.5mm.
9. a kind of generation Ⅲ nuclear power station coaxial cable manufacturing process, it comprises the steps:
S1: wire drawing and annealing: by the oxygen-free copper bar of outsourcing through multiple tracks wire drawing and annealings such as big drawing machine, Medium drawing mach ine and little machine drawings, obtain
The simple solid inner wire of nominal diameter 0.585mm, inspection conductor resistance and extensibility；
S2: insulation extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.6mm, thinnest point thickness is not less than 1.4mm, fire inspection
Voltage: ac 7000v；
S3: braided outer conductor: using tinned copper wire braid shielded, filament diameter is 0.15mm, and count is not less than 90%；
S4: wrapped protective layer: using the wrapped formation of polyester belt double-layer overlapping for 0.04mm for the nominal thickness；
S5: extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.7mm；
S6: wrapped Thermal protection screen:, the number of plies/tape thickness/bandwidth: 1/0.05/25mm wrapped using aluminum foil composite tape overlap, put up rate
It is not less than 15%；
S7: extrude oversheath: using white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 1.3mm, put down
All thickness is not less than nominal thickness, and thinnest point thickness is not less than 1.0mm；
S8: product inspection: routine test is carried out to finished cable；
S9: packaging and storage: put into warehouse for finished product after qualified finished cable end socket, packaging, Data Enter by checking.
10. a kind of generation Ⅲ nuclear power station coaxial cable manufacturing process, it comprises the steps:
S1: wire drawing and annealing is tin plating: by the oxygen-free copper bar of outsourcing through multiple tracks wire drawing and annealings such as big drawing machine, Medium drawing mach ine and little machine drawings,
Tin plating after annealing, obtain the tinned copper wire of nominal diameter 0.18mm, inspection copper wire resistance and extensibility；
S2: inner wire synnema: synnema forms at twice by 19/0.18 mm tinned copper wire, inspection conductor diameter and structure；
S3: insulation extrusion molding: using high density polyethylene (HDPE) insulation, nominal thickness 1.0mm, thinnest point thickness is not less than 0.9mm, fire inspection
Voltage: ac 5000v；
S4: braided outer conductor: using tinned copper wire braid shielded, filament diameter is 0.15mm, and count is not less than 90%；
S5: wrapped protective layer: using the wrapped formation of polyester belt double-layer overlapping for 0.04mm for the nominal thickness；
S6: extrude waterproof layer: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；
S7: braid shielded: be 0.15mm tinned copper wire braid shielded using filament diameter, count is not less than 90%；
S8: extrude sheath: extrude black k3 class low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.6mm；
S9: wrapped Thermal protection screen:, the number of plies/tape thickness/bandwidth: 1/0.05/25mm wrapped using aluminum foil composite tape overlap, put up rate
It is not less than 15%；
S10: extrude oversheath: using white k3 analog thermoplastic low-smoke and halogen-free flame retardant polyolefin jacket material, nominal thickness 0.9mm,
Average thickness is not less than nominal thickness, and thinnest point thickness is not less than 0.7mm；
S11: product inspection: routine test is carried out to finished cable；
S12: packaging and storage: put into warehouse for finished product after qualified finished cable end socket, packaging, Data Enter by checking.
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| CN106373650B (en) | 2018-07-03 |
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