CN105489310A - Cable used for electric power system - Google Patents
Cable used for electric power system Download PDFInfo
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- CN105489310A CN105489310A CN201610057684.8A CN201610057684A CN105489310A CN 105489310 A CN105489310 A CN 105489310A CN 201610057684 A CN201610057684 A CN 201610057684A CN 105489310 A CN105489310 A CN 105489310A
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- insulating barrier
- cable
- electric power
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/021—Features relating to screening tape per se
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- 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
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/47—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes fibre-reinforced plastics, e.g. glass-reinforced plastics
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- 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
- H01B7/02—Disposition of insulation
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- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
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- 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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
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- 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
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
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- 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Abstract
The invention belongs to the technical field of cables and materials, and especially relates to a cable used for an electric power system. The cable includes a first conductor, a first insulating layer wrapping the first conductor, a second conductor positioned outside the first insulating layer and wrapping the first insulating layer in a circular manner, a shielding layer outside the second conductor, and an outer sheath wrapping the shielding layer through plastic extrusion. The shielding layer is a composite band layer. A first mica tape layer, an aluminium belt and a second mica tape layer are sequentially arranged from the second conductor to the outer sheath. The first insulating layer is made through a special formula. The cable has the following main beneficial effects: the cable is quite easy to process, the equipment investment is low and is saved, and place occupation is reduced; the manufactured cable is compact in structure and low in cost, is simple for construction, and exhibits more excellent high-tension resistance/fire resistance/flame retardation/shielding properties; and the cable is easy to manufacture, and a manufacturing method is easy to grasp.
Description
The application is that name is called: a kind of electric power system cable and preparation method thereof, the applying date are: within 2014, December 18, application number are: the divisional application of the patent of invention of 201410787983.8.
Technical field
The invention belongs to cable and field of material technology, especially relate to a kind of electric power system cable and preparation method thereof.
Background technology
Along with the develop rapidly of all trades and professions, electric wire is applied on a large scale, and electric wire has become the second largest pillar industry after national economy relaying automobile industry.
Cable of the prior art is normally made up of many single-core cables, during transmission single-phase electricity, needs two cables; Three cables or three phase line additional neutral lines are needed during transmission three-phase electricity; In the occasion of three-phase five-wire mode, need five cables; Therefore lay suitable trouble.
For this reason, electric wire to be carried out in industry integrated, parallel lines during two-phase electrical transmission, by the parallel placement of two wire unit, then coated restrictive coating outside; When three-phase electricity is transmitted, the mode of three wire unit by stranded or parallel placement is combined, then the coated restrictive coating in outside; Etc., the subject matter that these structures exist is manufacture, management trouble, and high expensive, has larger radiation during use to external world.
Name is called: twin core cable and preparation method thereof, publication number are: the Chinese patent of CN102842387A discloses twin core cable, comprise the first conductor, the second conductor, restrictive coating; It is characterized in that also comprising and be positioned at central authorities and for columniform obturator, the first isolating bar, the second isolating bar; First conductor, the second conductor, the first isolating bar, the second isolating bar are all close to obturator; First conductor and the second conductor are kept apart by the first isolating bar, the second isolating bar, and the first isolating bar, the second conductor, the second isolating bar, the first conductor are connected successively; Isolating bar and restrictive coating are formed in one; First isolating bar, the second isolating bar protrude from the inwall of restrictive coating to obturator direction; Restrictive coating envelopes conductor; On arbitrary cross section, the first isolating bar, the second isolating bar, the first conductor, the second conductor are equal with the curvature on the surface that obturator appearance is affixed separately.
Name is called: three-core cable and preparation method thereof, publication number are: the Chinese patent of CN102842389A discloses three-core cable, comprise the first conductor, the second conductor, the 3rd conductor and restrictive coating; It is characterized in that also comprising obturator, the first isolating bar, the second isolating bar, the 3rd isolating bar that is positioned at central authorities; Three conductors, three isolating bars are all close to obturator; Three conductors are kept apart by three isolating bars, and the first isolating bar, the second conductor, the second isolating bar, the 3rd conductor, the 3rd isolating bar, the first conductor are close to successively mutually; Three isolating bars and restrictive coating are formed in one; Three isolating bars protrude from the inwall of restrictive coating to obturator direction; Restrictive coating envelopes the first conductor, the second conductor and the 3rd conductor; On arbitrary cross section, three isolating bars, three conductors are equal with the curvature on the surface that obturator appearance is affixed separately.
Name is called: quad and preparation method thereof, publication number are: the Chinese patent of CN102280172A discloses quad, include four conductors, restrictive coatings; It is characterized in that also comprising the obturator, four isolating bars that are positioned at central authorities; Four conductors, four isolating bars are all close to obturator and distribute along obturator outer circumference; First isolating bar is between the first conductor and the second conductor; Second isolating bar is between the second conductor and the 3rd conductor; 3rd isolating bar is between the 3rd conductor and the 4th conductor; 4th isolating bar is between the 4th conductor and the first conductor; Four isolating bars and restrictive coating are formed in one; Four isolating bars protrude from the inwall of restrictive coating to obturator direction; Arbitrary transversal and on, isolating bar, conductor are equal with the curvature on the surface that obturator appearance is affixed; Restrictive coating envelopes four isolating bars, four conductors.
They all have following beneficial effect: the consumption of product restrictive coating is few, and external diameter is thinner, and every cost is lower, and production process is simpler, speed is faster; But applicant thinks, also exist and reduce material consumption further, external diameter can be made thinner etc.
Summary of the invention
In order to solve the problem, the object of the invention is to disclose a kind of electric power system cable and preparation method thereof, they realize by the following technical solutions.
In first embodiment of the present invention, a kind of electric power system cable, it is characterized in that it include the first conductor, the first insulating barrier that the first conductor is enveloped, to be positioned at outside the first insulating barrier and annulus column envelope the first insulating barrier the second conductor, be positioned at screen outside the second conductor, extrusion molding is coated on outer jacket outside screen; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.0mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
In second embodiment of the present invention, a kind of electric power system cable, it is characterized in that it include the first conductor, the first insulating barrier that the first conductor is enveloped, to be positioned at outside the first insulating barrier and annulus column envelope the second conductor of the first insulating barrier, the second insulating barrier that the second conductor is enveloped, to be positioned at outside the second insulating barrier and annulus column envelope the second insulating barrier the 3rd conductor, be positioned at screen outside the 3rd conductor, extrusion molding is coated on outer jacket outside screen, the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is [0.95, 1.05], the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the 3rd conductor is [0.95, 1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, second conductor is [0.01mm by many diameters, 1.00mm] metal wire knitted form, 3rd conductor is [0.01mm by many diameters, 0.80mm] metal wire knitted form, the thickness of the first insulating barrier is [0.2mm, 1.2mm], the thickness of the second insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, the first mica belt is followed successively by outer jacket direction from the 3rd conductor, aluminium strip layer, second mica belt, the material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
In 3rd to the 5th embodiment of the present invention, a kind of electric power system cable, is characterized in that it includes the first conductor, the first insulating barrier enveloped by the first conductor, outside the first insulating barrier and in many second conductors of bow central column, between the second adjacent conductor and in the isolating bar of bow central column, the screen the second conductor and isolating bar enveloped, extrusion molding be coated on outer jacket outside screen; The first insulating barrier outer rim is close in the inner edge of isolating bar and the inner edge of the second conductor, and the outer rim of isolating bar and the outer rim of the second conductor are on the same face of cylinder; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of any second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.00mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
A kind of electric power system cable described above, it is characterized in that described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part.
A kind of electric power system cable described above, it is characterized in that described first mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
A kind of electric power system cable described above, it is characterized in that described second mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
A kind of electric power system cable described above, is characterized in that the thickness of described aluminium strip layer is 0.05mm ~ 0.30mm.
The structure of first, second conductor and whole cable in the present invention, cable is processed very simple, equipment investment is few, saves equipment investment and decrease place to take; And the obtained construction of cable is compact, cost is low, easily construct; Manufacture method simply, is easily grasped.
The first insulating barrier in the present invention, the second insulating barrier not only meet the properties requirement of wire cable insulating layer material, and have more excellent high voltage performance, fire-resistant and fire resistance; Its resistance to high direct voltage of 0.2mm thickness of filling a prescription on a large scale reaches the level do not punctured for 1KV/1 hour after tested, and the resistance to high direct voltage of 1.2mm thickness reaches the level do not punctured for 50KV/1 hour; During optimization formula, the resistance to high direct voltage of 0.2mm thickness reaches the level do not punctured for 1.6KV/1 hour, and the resistance to high direct voltage of 1.2mm thickness reaches the level do not punctured for 75KV/1 hour; Along with the increase of thickness, resistance to high direct voltage level obviously increases; And insulating barrier of the prior art needs to accomplish that 0.8mm thickness just can reach resistance to high direct voltage and reach the level do not punctured for 1KV/1 hour usually; Therefore, thickness of insulating layer can be made obviously to reduce, can greatly reduce costs; The first insulating barrier in the present invention, the second insulating layer material can also be used in other cable; After testing, all higher than the index of cable insulation, therefore cable has extremely excellent fire-resistant and fire resistance to the fire-resistant and fire resistance index of the first insulating barrier in the present invention, the second insulating barrier.
Screen in the present invention not only has excellent shielding properties, and has fire-retardant, fire-resistant premium properties and the binding ability excellent with outer jacket.
Therefore, the present invention has following main beneficial effect: cable processing is very simple, and equipment investment is few, saves equipment investment and decrease place to take; And the obtained construction of cable is compact, cost is low, easy construction, high pressure resistant/fire-resistant/fire-retardant/shielding properties are more excellent; Manufacture method simply, is easily grasped.
Accompanying drawing explanation
Fig. 1 is that one section of solution of the invention process example 1 cuts later stereochemical structure signal open.
Fig. 2 is the cross-sectional structure schematic diagram after Fig. 1 amplifies.
Fig. 3 is that one section of solution of the invention process example 2 cuts later stereochemical structure signal open.
Fig. 4 is the cross-sectional structure schematic diagram after Fig. 3 amplifies.
Fig. 5 is that one section of solution of the invention process example 3 cuts later stereochemical structure signal open.
Fig. 6 is the cross-sectional structure schematic diagram after Fig. 5 amplifies.
Fig. 7 is that one section of solution of the invention process example 4 cuts later stereochemical structure signal open.
Fig. 8 is the cross-sectional structure schematic diagram after Fig. 7 amplifies.
Fig. 9 is that one section of solution of the invention process example 5 cuts later stereochemical structure signal open.
Figure 10 is the cross-sectional structure schematic diagram after Fig. 9 amplifies.
Embodiment
Embodiment 1
Ask for an interview Fig. 1 and Fig. 2, a kind of electric power system cable, it is characterized in that it include the first conductor 11, the first insulating barrier 21 that the first conductor is enveloped, to be positioned at outside the first insulating barrier and annulus column envelope the first insulating barrier the second conductor 12, be positioned at screen 4 outside the second conductor, extrusion molding is coated on outer jacket 5 outside screen; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.0mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
A kind of electric power system cable described above, is characterized in that its manufacture method comprises following steps:
Form the step of the first conductor: getting many diameters is the wire of [0.01mm, 1.25mm] stranded formation first conductor together on strand winder; Or first getting many diameters is [0.01mm, 1.25mm] wire stranded formation ground floor conductor on strand winder, getting many diameters is more in addition [0.01mm, 1.25mm] wire at the outer stranded formation second layer conductor of the outer ground floor conductor of ground floor conductor, the like, until form the first conductor of required sectional area; Wherein, between the conductor of adjacent layer: direction of lay is contrary, and outer field twisting pitch is 2 ~ 4 times of the twisting pitch of internal layer;
Form the step of the first insulating barrier: extrusion molding thickness is [0.2mm outside the first conductor, 1.2mm] the first insulating barrier, described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part,
Form the step of the second conductor: be [0.01mm by many diameters, 1.0mm] wire braiding machine or cage winch weave formation second conductor outward at the first insulating barrier, second conductor is that annulus column is coated on outside the first insulating barrier, make the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor for [0.95,1.05];
Form the step of screen: get composite tape layers spiral or be longitudinally coated on outside the second conductor and form screen, wherein, composite tape layers is by the first mica belt formed successively, aluminium strip layer, second mica belt is formed, composite tape layers and the second conductor contact face are the first mica belt or the second mica belt, first mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, second mica belt by weight, is made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, the thickness of aluminium strip layer is 0.05mm ~ 0.30mm, and aluminium strip layer and the first mica belt and the second mica belt are bonded as one,
Form the step of outer jacket: in the outer coated polyvinyl chloride of extrusion molding of screen or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low-smoke halogen-free polyethylene material, form outer jacket, complete the making of electric power system cable.
Embodiment 2
Ask for an interview Fig. 3 and Fig. 4, a kind of electric power system cable, it is characterized in that it include the first conductor 11, the first insulating barrier 21 that the first conductor is enveloped, to be positioned at outside the first insulating barrier and annulus column envelope the first insulating barrier the second conductor 12, the second insulating barrier 22 that the second conductor is enveloped, to be positioned at outside the second insulating barrier and annulus column envelope the second insulating barrier the 3rd conductor 13, be positioned at screen 4 outside the 3rd conductor, extrusion molding is coated on outer jacket 5 outside screen, the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is [0.95, 1.05], the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the 3rd conductor is [0.95, 1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, second conductor is [0.01mm by many diameters, 1.00mm] metal wire knitted form, 3rd conductor is [0.01mm by many diameters, 0.80mm] metal wire knitted form, the thickness of the first insulating barrier is [0.2mm, 1.2mm], the thickness of the second insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, the first mica belt is followed successively by outer jacket direction from the 3rd conductor, aluminium strip layer, second mica belt, the material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
A kind of electric power system cable described above, is characterized in that its manufacture method comprises following steps:
Form the step of the first conductor: getting many diameters is the wire of [0.01mm, 1.25mm] stranded formation first conductor together on strand winder; Or first getting many diameters is [0.01mm, 1.25mm] wire stranded formation ground floor conductor on strand winder, getting many diameters is more in addition [0.01mm, 1.25mm] wire at the outer stranded formation second layer conductor of the outer ground floor conductor of ground floor conductor, the like, until form the first conductor of required sectional area; Wherein, between the conductor of adjacent layer: direction of lay is contrary, and outer field twisting pitch is 2 ~ 4 times of the twisting pitch of internal layer;
Form the step of the first insulating barrier: extrusion molding thickness is [0.2mm outside the first conductor, 1.2mm] the first insulating barrier, described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part,
Form the step of the second conductor: be [0.01mm by many diameters, 1.0mm] wire braiding machine or cage winch weave formation second conductor outward at the first insulating barrier, second conductor is that annulus column is coated on outside the first insulating barrier, make the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor for [0.95,1.05];
Form the step of the second insulating barrier: extrusion molding thickness is [0.2mm outside the second conductor, 1.2mm] the second insulating barrier, described second insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part,
Form the step of the 3rd conductor: be [0.01mm by many diameters, 0.80mm] wire braiding machine or cage winch weave formation the 3rd conductor outward at the second insulating barrier, 3rd conductor is that annulus column is coated on outside the second insulating barrier, make the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the 3rd conductor for [0.95,1.05];
Form the step of screen: get composite tape layers spiral or be longitudinally coated on outside the 3rd conductor and form screen, wherein, composite tape layers is by the first mica belt formed successively, aluminium strip layer, second mica belt is formed, composite tape layers and the second conductor contact face are the first mica belt or the second mica belt, first mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, second mica belt by weight, is made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, the thickness of aluminium strip layer is 0.05mm ~ 0.30mm, and aluminium strip layer and the first mica belt and the second mica belt are bonded as one,
Form the step of outer jacket: in the outer coated polyvinyl chloride of extrusion molding of screen or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low-smoke halogen-free polyethylene material, form outer jacket, complete the making of electric power system cable.
Embodiment 3
Ask for an interview Fig. 5 and Fig. 6, a kind of electric power system cable, is characterized in that it includes the first conductor 11, the first insulating barrier 21 enveloped by the first conductor, outside the first insulating barrier and in two second conductors 12 of bow central column, between the second adjacent conductor and in the isolating bar 3 of bow central column, the screen 4 the second conductor and isolating bar enveloped, extrusion molding be coated on outer jacket 5 outside screen; The first insulating barrier outer rim is close in the inner edge of isolating bar and the inner edge of the second conductor, and the outer rim of isolating bar and the outer rim of the second conductor are on the same face of cylinder; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of any second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.00mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
Embodiment 4
Ask for an interview Fig. 7 and Fig. 8, a kind of electric power system cable, is characterized in that it includes the first conductor 11, the first insulating barrier 21 enveloped by the first conductor, outside the first insulating barrier and in three second conductors 12 of bow central column, between the second adjacent conductor and in the isolating bar 3 of bow central column, the screen 4 the second conductor and isolating bar enveloped, extrusion molding be coated on outer jacket 5 outside screen; The first insulating barrier outer rim is close in the inner edge of isolating bar and the inner edge of the second conductor, and the outer rim of isolating bar and the outer rim of the second conductor are on the same face of cylinder; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of any second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.00mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
Embodiment 5
Ask for an interview Fig. 9 and Figure 10, a kind of electric power system cable, is characterized in that it includes the first conductor 11, the first insulating barrier 21 enveloped by the first conductor, outside the first insulating barrier and in four second conductors 12 of bow central column, between the second adjacent conductor and in the isolating bar 3 of bow central column, the screen 4 the second conductor and isolating bar enveloped, extrusion molding be coated on outer jacket 5 outside screen; The first insulating barrier outer rim is close in the inner edge of isolating bar and the inner edge of the second conductor, and the outer rim of isolating bar and the outer rim of the second conductor are on the same face of cylinder; The ratio of the cross-sectional area of the first conductor and the cross-sectional area of any second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.00mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction; The material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene.
Any one electric power system cable described in above-mentioned embodiment 3 to embodiment 5, is characterized in that described second conductor 12 can be other many.
A kind of electric power system cable described in embodiment 3 to embodiment 5, is characterized in that its manufacture method comprises following steps:
Form the step of the first conductor: getting many diameters is the wire of [0.01mm, 1.25mm] stranded formation first conductor together on strand winder; Or first getting many diameters is [0.01mm, 1.25mm] wire stranded formation ground floor conductor on strand winder, getting many diameters is more in addition [0.01mm, 1.25mm] wire at the outer stranded formation second layer conductor of the outer ground floor conductor of ground floor conductor, the like, until form the first conductor of required sectional area; Wherein, between the conductor of adjacent layer: direction of lay is contrary, and outer field twisting pitch is 2 ~ 4 times of the twisting pitch of internal layer;
Form the step of the first insulating barrier: extrusion molding thickness is [0.2mm outside the first conductor, 1.2mm] the first insulating barrier, described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part,
Form the step of the second conductor: the wire braiding machine being [0.01mm, 1.0mm] by many diameters is woven into the second conductor of bow central column, and the bow annulated column inner edge radius of curvature of the second conductor is the same with the radius of curvature of the first insulating barrier outer rim; Make the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor for [0.95,1.05]; Above-mentioned steps repeatedly forms many second conductors repeatedly;
Form the step of cable core: get the first insulating barrier, many second conductors, isolating bar with the same number of the second conductor, the first insulating barrier outer rim is close in the inner edge of the inner edge of isolating bar and the second conductor, and isolating bar is placed between the second adjacent conductor; Make the outer rim of the outer rim of isolating bar and the second conductor on the same face of cylinder; Form cable cable;
Form the step of screen: get composite tape layers spiral or be longitudinally coated on outside cable core and form screen, wherein, composite tape layers is by the first mica belt formed successively, aluminium strip layer, second mica belt is formed, composite tape layers and the second conductor contact face are the first mica belt or the second mica belt, first mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, second mica belt by weight, is made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts, the thickness of aluminium strip layer is 0.05mm ~ 0.30mm, and aluminium strip layer and the first mica belt and the second mica belt are bonded as one,
Form the step of outer jacket: in the outer coated polyvinyl chloride of extrusion molding of screen or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low-smoke halogen-free polyethylene material, form outer jacket, complete the making of electric power system cable.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 80 ~ 90 parts, ethene-acetate ethylene copolymer: 10 ~ 15 parts, epoxy resin: 6 ~ 8 parts, Tissuemat E: 1 ~ 3 part, ammonium polyacrylate: 1 ~ 2 part, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 15 ~ 25 parts, ethanedioic acid dioctyl ester: 15 ~ 20 parts, repefral: 12 ~ 18 parts, trimellitic anhydride: 4 ~ 5 parts, magnesium hydroxide or aluminium hydroxide: 25 ~ 35 parts, mica powder: 20 ~ 40 parts, carbon black: 8 ~ 12 parts, commercially available model is the antioxidant of 1010: 1 ~ 2 part.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described first insulating barrier by weight, optimization formula is configured to: polyvinyl resin: 85 parts by following raw material, ethene-acetate ethylene copolymer: 12 parts, epoxy resin: 7 parts, Tissuemat E: 2 parts, ammonium polyacrylate: 1.5 parts, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 20 parts, ethanedioic acid dioctyl ester: 18 parts, repefral: 16 parts, trimellitic anhydride: 4.5 parts, magnesium hydroxide or aluminium hydroxide: 30 parts, mica powder: 30 parts, carbon black: 10 parts, commercially available model is the antioxidant of 1010: 1.5 parts.
In above-mentioned embodiment, when having the second insulating barrier, the material of the second insulating barrier can be identical with the material of the first insulating barrier.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described first mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described first mica belt by weight, constitute optimization formula by following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 30 parts, mica powder: 60 parts, epoxy resin: 25 parts, polyethylene resin: 20 parts, acid polyethylene vinyl acetate: 8 parts, glycerine: 4 parts, tetrachloromethane: 7 parts.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described second mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
A kind of electric power system cable described in above-mentioned arbitrary embodiment, it is characterized in that described second mica belt by weight, constitute optimization formula by following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 30 parts, mica powder: 60 parts, epoxy resin: 25 parts, polyethylene resin: 20 parts, acid polyethylene vinyl acetate: 8 parts, glycerine: 4 parts, tetrachloromethane: 7 parts.
In the present invention, the most ideal value of ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is the most ideal value of ratio of the cross-sectional area of the 1.0, the first conductor and the cross-sectional area of the 3rd conductor is 1.0.
The structure of first, second conductor and whole cable in the present invention, cable is processed very simple, equipment investment is few, saves equipment investment and decrease place to take; And the obtained construction of cable is compact, cost is low, easily construct; Manufacture method simply, is easily grasped.
The first insulating barrier in the present invention, the second insulating barrier not only meet the properties requirement of wire cable insulating layer material, and have more excellent high voltage performance, fire-resistant and fire resistance; Its resistance to high direct voltage of 0.2mm thickness of filling a prescription on a large scale reaches the level do not punctured for 1KV/1 hour after tested, and the resistance to high direct voltage of 1.2mm thickness reaches the level do not punctured for 50KV/1 hour; During optimization formula, the resistance to high direct voltage of 0.2mm thickness reaches the level do not punctured for 1.6KV/1 hour, and the resistance to high direct voltage of 1.2mm thickness reaches the level do not punctured for 75KV/1 hour; Along with the increase of thickness, resistance to high direct voltage level obviously increases; And insulating barrier of the prior art needs to accomplish that 0.8mm thickness just can reach resistance to high direct voltage and reach the level do not punctured for 1KV/1 hour usually; Therefore, thickness of insulating layer can be made obviously to reduce, can greatly reduce costs; The first insulating barrier in the present invention, the second insulating layer material can also be used in other cable; After testing, all higher than the index of cable insulation, therefore cable has extremely excellent fire-resistant and fire resistance to the fire-resistant and fire resistance index of the first insulating barrier in the present invention, the second insulating barrier.
Screen in the present invention not only has excellent shielding properties, and has fire-retardant, fire-resistant premium properties and the binding ability excellent with outer jacket.
Therefore, the present invention has following main beneficial effect: cable processing is very simple, and equipment investment is few, saves equipment investment and decrease place to take; And the obtained construction of cable is compact, cost is low, easy construction, high pressure resistant/fire-resistant/fire-retardant/shielding properties are more excellent; Manufacture method simply, is easily grasped.
The present invention is not limited to above-mentioned preferred forms, and should be appreciated that design of the present invention can be implemented to use by other various forms, they drop in protection scope of the present invention equally.
Claims (5)
1. an electric power system cable, it include the first conductor, the first insulating barrier that the first conductor is enveloped, to be positioned at outside the first insulating barrier and annulus column envelope the first insulating barrier the second conductor, be positioned at screen outside the second conductor, extrusion molding is coated on outer jacket outside screen, the ratio of the cross-sectional area of the first conductor and the cross-sectional area of the second conductor is [0.95,1.05], first conductor is [0.01mm by many diameters, 1.25mm] wire strandedly to form, the metal wire knitted that the second conductor is [0.01mm, 1.0mm] by many diameters forms, the thickness of the first insulating barrier is [0.2mm, 1.2mm], screen is composite tape layers, is followed successively by the first mica belt, aluminium strip layer, the second mica belt from the second conductor to outer jacket direction, the material of outer jacket is polyvinyl chloride or low density polyethylene (LDPE) or medium density polyethylene or high density polyethylene (HDPE) or low smoke and zero halogen polyethylene, it is characterized in that, described first insulating barrier by weight, be made up of following raw material: polyvinyl resin: 85 parts, ethene-acetate ethylene copolymer: 12 parts, epoxy resin: 7 parts, Tissuemat E: 2 parts, ammonium polyacrylate: 1.5 parts, nano-silicon nitride or nanometer silicon carbide or nano zircite or nano aluminium oxide: 20 parts, ethanedioic acid dioctyl ester: 18 parts, repefral: 16 parts, trimellitic anhydride: 4.5 parts, magnesium hydroxide or aluminium hydroxide: 30 parts, mica powder: 30 parts, carbon black: 10 parts, commercially available model is the antioxidant of 1010: 1.5 parts, the thickness of described aluminium strip layer is 0.05mm ~ 0.30mm.
2. a kind of electric power system cable according to claim 1, it is characterized in that, described first mica belt by weight, is made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
3. a kind of electric power system cable according to claim 2, it is characterized in that, described second mica belt by weight, is made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 20 ~ 40 parts, mica powder: 50 ~ 70 parts, epoxy resin: 20 ~ 30 parts, polyethylene resin: 15 ~ 25 parts, acid polyethylene vinyl acetate: 5 ~ 10 parts, glycerine: 3 ~ 5 parts, tetrachloromethane: 5 ~ 10 parts.
4. according to a kind of electric power system cable according to claim 1 or claim 2, it is characterized in that, described first mica belt is identical material with the second mica belt.
5. a kind of electric power system cable according to claim 4, it is characterized in that described second mica belt by weight, be made up of following raw material: length is 0.03 ~ 0.30mm, diameter is the fiberglass reinforced plastics of 0.01 ~ 0.10mm: 30 parts, mica powder: 60 parts, epoxy resin: 25 parts, polyethylene resin: 20 parts, acid polyethylene vinyl acetate: 8 parts, glycerine: 4 parts, tetrachloromethane: 7 parts.
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| CN201410787983.8A CN104392798B (en) | 2014-12-18 | 2014-12-18 | A kind of cable and preparation method thereof for power system |
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| CN201410787983.8A Division CN104392798B (en) | 2014-12-18 | 2014-12-18 | A kind of cable and preparation method thereof for power system |
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| CN105489310A true CN105489310A (en) | 2016-04-13 |
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| CN201610057687.1A Pending CN105489311A (en) | 2014-12-18 | 2014-12-18 | Cable for electric power system and manufacturing method thereof |
| CN201410787983.8A Expired - Fee Related CN104392798B (en) | 2014-12-18 | 2014-12-18 | A kind of cable and preparation method thereof for power system |
| CN201610057683.3A Pending CN105551671A (en) | 2014-12-18 | 2014-12-18 | Cable used in electrical power system |
| CN201610057674.4A Pending CN105489308A (en) | 2014-12-18 | 2014-12-18 | Insulating layer material and mica tape for power cable |
| CN201610057684.8A Pending CN105489310A (en) | 2014-12-18 | 2014-12-18 | Cable used for electric power system |
| CN201610057675.9A Pending CN105489309A (en) | 2014-12-18 | 2014-12-18 | Cable for electric power system |
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| CN201610057687.1A Pending CN105489311A (en) | 2014-12-18 | 2014-12-18 | Cable for electric power system and manufacturing method thereof |
| CN201410787983.8A Expired - Fee Related CN104392798B (en) | 2014-12-18 | 2014-12-18 | A kind of cable and preparation method thereof for power system |
| CN201610057683.3A Pending CN105551671A (en) | 2014-12-18 | 2014-12-18 | Cable used in electrical power system |
| CN201610057674.4A Pending CN105489308A (en) | 2014-12-18 | 2014-12-18 | Insulating layer material and mica tape for power cable |
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| CN106009167A (en) * | 2016-06-23 | 2016-10-12 | 温州泓呈祥科技有限公司 | Flame-retardant cable insulating material containing pleonaste |
| CN113223758A (en) * | 2021-03-29 | 2021-08-06 | 浙江元通线缆制造有限公司 | Prefabricated branch cable and production process thereof |
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| CN106117699A (en) * | 2016-06-23 | 2016-11-16 | 温州泓呈祥科技有限公司 | A kind of preparation method of the Fire retardation electric cable insulation material containing magnesium aluminate spinel |
| CN113611458B (en) * | 2021-07-15 | 2022-12-09 | 中广核新奇特(扬州)电气有限公司 | Preparation method of super A-class high-flame-retardant glass cloth wrapping belt |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104392798B (en) | 2016-05-18 |
| CN104392798A (en) | 2015-03-04 |
| CN105489309A (en) | 2016-04-13 |
| CN105489308A (en) | 2016-04-13 |
| CN105551671A (en) | 2016-05-04 |
| CN105489311A (en) | 2016-04-13 |
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Application publication date: 20160413 |
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