CN107731367B - Main line cable convenient for branching - Google Patents
Main line cable convenient for branching Download PDFInfo
- Publication number
- CN107731367B CN107731367B CN201711079314.5A CN201711079314A CN107731367B CN 107731367 B CN107731367 B CN 107731367B CN 201711079314 A CN201711079314 A CN 201711079314A CN 107731367 B CN107731367 B CN 107731367B
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- China
- Prior art keywords
- parts
- arc
- insulating layer
- backup pad
- sets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 16
- 238000002955 isolation Methods 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000003963 antioxidant agent Substances 0.000 claims description 12
- 230000003078 antioxidant effect Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 12
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 12
- 239000003063 flame retardant Substances 0.000 claims description 10
- 229920000728 polyester Polymers 0.000 claims description 10
- -1 polyethylene Polymers 0.000 claims description 10
- 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 claims description 7
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 claims description 6
- SENMPMXZMGNQAG-UHFFFAOYSA-N 3,4-dihydro-2,5-benzodioxocine-1,6-dione Chemical compound O=C1OCCOC(=O)C2=CC=CC=C12 SENMPMXZMGNQAG-UHFFFAOYSA-N 0.000 claims description 6
- IBSREHMXUMOFBB-JFUDTMANSA-N 5u8924t11h Chemical compound O1[C@@H](C)[C@H](O)[C@@H](OC)C[C@@H]1O[C@@H]1[C@@H](OC)C[C@H](O[C@@H]2C(=C/C[C@@H]3C[C@@H](C[C@@]4(O3)C=C[C@H](C)[C@@H](C(C)C)O4)OC(=O)[C@@H]3C=C(C)[C@@H](O)[C@H]4OC\C([C@@]34O)=C/C=C/[C@@H]2C)/C)O[C@H]1C.C1=C[C@H](C)[C@@H]([C@@H](C)CC)O[C@]11O[C@H](C\C=C(C)\[C@@H](O[C@@H]2O[C@@H](C)[C@H](O[C@@H]3O[C@@H](C)[C@H](O)[C@@H](OC)C3)[C@@H](OC)C2)[C@@H](C)\C=C\C=C/2[C@]3([C@H](C(=O)O4)C=C(C)[C@@H](O)[C@H]3OC\2)O)C[C@H]4C1 IBSREHMXUMOFBB-JFUDTMANSA-N 0.000 claims description 6
- 239000005660 Abamectin Substances 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 claims description 6
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 6
- 229950008167 abamectin Drugs 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000004359 castor oil Substances 0.000 claims description 6
- 235000019438 castor oil Nutrition 0.000 claims description 6
- 239000006084 composite stabilizer Substances 0.000 claims description 6
- XJQPQKLURWNAAH-UHFFFAOYSA-N dihydrocapsaicin Chemical compound COC1=CC(CNC(=O)CCCCCCC(C)C)=CC=C1O XJQPQKLURWNAAH-UHFFFAOYSA-N 0.000 claims description 6
- RBCYRZPENADQGZ-UHFFFAOYSA-N dihydrocapsaicin Natural products COC1=CC(COC(=O)CCCCCCC(C)C)=CC=C1O RBCYRZPENADQGZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011363 dried mixture Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 6
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 claims description 6
- 239000004292 methyl p-hydroxybenzoate Substances 0.000 claims description 6
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 229920001444 polymaleic acid Polymers 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000004537 pulping Methods 0.000 claims description 6
- 229910052903 pyrophyllite Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000010456 wollastonite Substances 0.000 claims description 6
- 229910052882 wollastonite Inorganic materials 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 5
- 241000758794 Asarum Species 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 10
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
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- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
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- 238000007710 freezing Methods 0.000 description 5
- 230000008014 freezing Effects 0.000 description 5
- 229960002216 methylparaben Drugs 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000009954 braiding Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NMRPBPVERJPACX-UHFFFAOYSA-N octan-3-ol Chemical compound CCCCCC(O)CC NMRPBPVERJPACX-UHFFFAOYSA-N 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
-
- 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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
-
- 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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
-
- 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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
-
- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
-
- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
-
- 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
- H01B7/2806—Protection against damage caused by corrosion
-
- 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
-
- 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
- H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
- H01B7/385—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation comprising a rip cord or wire
-
- 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
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Insulated Conductors (AREA)
Abstract
The application discloses a cable for a trunk line, which is convenient to branch, and comprises an outer sheath, wherein an outer insulating layer is sleeved in the outer sheath, a tensile middle core is arranged in the center of the outer insulating layer, four first supporting plates are arranged on the tensile middle core in an annular array mode, the four first supporting plates are arranged in a cross shape to equally divide the outer insulating layer into four containing spaces, three wires are arranged in each containing space, one side of each first supporting plate is provided with a first arc-shaped plate, the other side of each first supporting plate is provided with a second arc-shaped plate, each first supporting plate is provided with a first tearing strip, one end of each first arc-shaped plate, which is far away from the first supporting plate, is provided with a second supporting plate, and each second supporting plate is provided with a second tearing strip. The beneficial effects of the application are as follows: the cables are integrally buried, mutual interference can not be generated among different types of cables, and the cables can be conveniently branched.
Description
Technical Field
The application mainly relates to the field of cables, in particular to a cable for a trunk line, which is convenient to branch.
Background
The cable is indispensable equipment in electric power operation, along with the gradual increment of domestic electricity and industrial electricity, the use amount of the cable is also continuously increased in quantity and variety, in the prior art, a plurality of cables are required to be buried together on a trunk line laid by the cable, the plurality of cables are bound together in common practice, the binding is unstable, the cables are easy to scatter after being used for a period of time, the cables are difficult to distinguish, and inconvenience is brought to later maintenance of the cables; in addition, the whole structure strength of the cable is insufficient, and the cable is easy to deform and bend when being bound, so that signal transmission is affected.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides the cable for the main line, which is convenient to branch, a plurality of cables are integrally buried, the cables of different types cannot interfere with each other, and the cable can be conveniently branched.
The application aims to achieve the aim, and the aim is achieved by the following technical scheme:
the utility model provides a make things convenient for branched cable for backbone, includes the oversheath, the oversheath endotheca establishes the outer insulating layer, the center in the outer insulating layer sets up the tensile center, annular array sets up four first backup pads in the tensile, and four first backup pads are cross arrangement and equally divide into four accommodation space with the outer insulating layer, set up three wires in each accommodation space, one side of first backup pad sets up first arc, the opposite side of first backup pad sets up the second arc, the second arc is the elastic plate, form between first arc, the second arc that are located same accommodation space with wire matched with guide channel, the one end that the tensile center was kept away from to first backup pad sets up first recess, set up first tear strip in the first recess, the one end that first arc was kept away from first backup pad sets up the second backup pad, the other end and the outer insulating layer of second backup pad are connected, set up the second recess in the second backup pad, set up the second tear strip in the second recess, set up the first arc, the other end that sets up on the first arc, the other end and the outer insulating layer of being kept away from sets up the baffle.
The wire comprises a conductor, wherein the outside of the conductor is sequentially coated with an isolation layer, a conductor shielding layer and an inner insulating layer from inside to outside, and the isolation layer is a high-flame-retardant polyester tape isolation layer.
And the first groove and the second groove are filled with flame retardant filler.
The outer sheath comprises the following raw materials in parts by weight:
65-85 parts of PVC resin, 10-20 parts of ethylene phthalate, 20-30 parts of carbon black N660, 1-3 parts of polyethylene wax, 1-2 parts of calcium zinc composite stabilizer, 10-15 parts of calcium stearate, 8-16 parts of modified mineral filler, 10-15 parts of vinyl trimethoxy silane, 5-10 parts of di-N-butyl sebacate, 6-12 parts of castor oil, 2-4 parts of methyl p-hydroxybenzoate, 1-2 parts of antioxidant, 8-16 parts of ethylene-vinyl acetate copolymer, 2-4 parts of zinc stearate, 0.2-0.8 part of antioxidant, 70-90 parts of abamectin, 5-15 parts of asarum grease and 5-15 parts of dihydrocapsaicin.
The preparation method of the modified mineral filler comprises the following steps:
a. the weight ratio is 50-80: weighing coal gangue, wollastonite, kaolin and pyrophyllite according to a ratio of 5-10:3-6:2-4, uniformly mixing, crushing, and ball-milling in a ball mill to obtain a powdery mixture;
b. heating the powdery mixture to 500-600deg.C at 10deg.C/min, maintaining the temperature for 45-60min, then continuously heating to 650-700deg.C, maintaining the temperature for 20-30min, and naturally cooling to room temperature;
c. pulping the calcined composite mineral filler with water to obtain 30-45% suspension, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution, standing for 20-30min, and filtering;
d. taking 30-40% of ethylene-vinyl acetate copolymer, 25-35% of polyester polyurethane, 3-5% of dipentaerythritol octanol ester, 2-4% of 2,4 '-trichloro-2' -hydroxydiphenyl ether and 4-6% of butyl stearate which are equivalent to the weight of the powdery mixture, and uniformly mixing;
e. uniformly mixing 3-5% of methoxy polyethylene glycol monomethacrylate and 2-4% of polymaleic acid;
f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying;
g. and (3) putting the dried mixture into a double-screw extruder for melt blending, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, the cables are integrally buried, mutual interference can not be generated among the cables of different types, and when the cables need to be branched, the wires needing to be branched can be taken out by tearing the tear strip without affecting the protection of the outer sheath 1 on other wires, so that the cables can be conveniently branched.
2. The outside of the conductor is sequentially coated with the isolation layer, the conductor shielding layer and the inner insulating layer from inside to outside, so that the mutual interference among different types of cables can be prevented, the cable which is protected by losing the outer sheath after the cable is branched can still adapt to the external environment, is not easy to deform and bend, and can be independently applied.
3. According to the application, the first groove and the second groove are filled with the flame-retardant filler, so that the flame retardance of the cable can be improved.
4. The outer sheath has excellent flame retardance and insulating property, good water resistance, low shrinkage, good dimensional stability and good corrosion resistance, and has the function of mildew resistance.
5. The modified mineral filler is added into the outer sheath, so that the tensile strength, tensile stress and elongation at break can be improved, the flexibility is high, the stretching resistance effect is good, and the tear resistance after freezing of the cable are improved.
Drawings
Fig. 1 is a schematic diagram of the structure of the present application.
Fig. 2 is an enlarged view at a of fig. 1.
Fig. 3 is a schematic diagram of the structure of the conductor.
The reference numbers shown in the drawings: 1. an outer sheath; 2. an outer insulating layer; 3. a tensile middle core; 4. a first support plate; 41. a first tear strip; 42. flame retardant filler; 5. a first arcuate plate; 6. a second arcuate plate; 7. a conductor; 71. an isolation layer; 72. a conductor shielding layer; 73. an inner insulating layer; 74. a guide channel; 8. a second support plate; 81. a second tear strip; 9. a connecting plate; 91. and a baffle.
Detailed Description
The application will be further described with reference to the accompanying drawings and specific embodiments. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the application, and equivalents thereof fall within the scope of the application as defined by the claims.
The utility model provides a cable for trunk line of convenient branch, includes oversheath 1, oversheath 1 endotheca is established outer insulating layer 2, the center in the outer insulating layer 2 sets up tensile well core 3, and tensile well core 3 is tensile fibre bundle or wire rope for the stress point in the cable concentrates on tensile well core 3, improves the tensile strength of cable. The annular array sets up four first backup pads 4 on the tensile well core 3, and four first backup pads 4 are cross-shaped and arrange the aliquotation in with outer insulating layer 2 four accommodation space, set up three wire in every accommodation space, and many cables are wholly buried underground, can not produce mutual interference between the cable of different grade type for the wire in every accommodation space can all be as independent branch. One side of the first supporting plate 4 is provided with a first arc-shaped plate 5, the other side of the first supporting plate 4 is provided with a second arc-shaped plate 6, a guide channel 74 matched with a wire is formed between the first arc-shaped plate 5 and the second arc-shaped plate 6 in the same accommodating space, and the second arc-shaped plate 6 is an elastic plate, so that the wire can conveniently pass in and out from the guide channel 74. The first support plate 4 is provided with a first groove at one end far away from the tensile middle core 3, a first tear strip 41 is arranged in the first groove, the first arc plate 5 is provided with a second support plate 8 at one end far away from the first support plate 4, the other end of the second support plate 8 is connected with the outer insulation layer 2, the second support plate 8 is provided with a second groove, a second tear strip 81 is arranged in the second groove, the first arc plate 5 is provided with a connecting plate 9, the other end of the connecting plate 9 is connected with the outer insulation layer 2, one end of the connecting plate 9 far away from the first arc plate 5 is provided with a baffle 91, when the wires to be branched are required to be branched, the first and second tearing strips 41 and 81 on the two sides of the wires to be branched tear the outer sheath 1 and the outer insulation, the wires to be branched are taken out from the guide channel 74, the connecting plates 9 on the two sides of the guide channel 74 are connected with the outer insulation layer 2, the baffle 91 can prevent the outer insulation layer 2 from being separated from the first and second support plates 4 and 8 corresponding to other accommodating spaces, the outer sheath 1 and the outer insulation layer 2 are still relatively sealed and environmentally-protected wires which are not branched under the support of the connecting plates 9, and the wires in parallel can be rapidly branched.
Preferably, the wire comprises a conductor 7, and the outside of the conductor 7 is sequentially coated with an isolation layer 71, a conductor shielding layer 72 and an inner insulating layer 73 from inside to outside, so that mutual interference between wires is avoided, and the isolation layer 71, the conductor shielding layer 72 and the inner insulating layer 73 continue to protect the wires after independent branching, so that the branched wires can perform geographic operation; the conductor shield layer 72 is formed by braiding plated fibers, is light in weight, has high vibration damping characteristics, and can prevent the inner insulating layer from being worn by the conductor shield layer 72; the outer insulating layer 2 and the inner insulating layer 73 are made of ethylene propylene rubber which takes ethylene propylene diene monomer rubber, modified ethylene propylene rubber, thermoplastic ethylene propylene rubber and the like as main components, and the isolation layer 71 is a high flame-retardant polyester tape isolation layer, so that the flame retardance of the cable is improved.
Preferably, the first groove and the second groove are filled with a flame retardant filler 42, so as to increase the flame retardance of the cable.
Preferably, the outer sheath comprises the following raw materials in parts by weight:
65-85 parts of PVC resin, 10-20 parts of ethylene glycol phthalate, 20-30 parts of carbon black N660, 1-3 parts of polyethylene wax, 1-2 parts of calcium zinc composite stabilizer, 10-15 parts of calcium stearate, 8-16 parts of modified mineral filler, 10-15 parts of vinyl trimethoxysilane, 5-10 parts of di-N-butyl sebacate, 6-12 parts of castor oil, 2-4 parts of methyl parahydroxybenzoate, 1-2 parts of antioxidant, 8-16 parts of ethylene-vinyl acetate copolymer, 2-4 parts of zinc stearate, 0.2-0.8 part of antioxidant, 70-90 parts of abamectin, 5-15 parts of asarin and 5-15 parts of dihydrocapsaicin, so that the outer sheath 1 has excellent flame retardance and insulation performance, good water resistance, low shrinkage, good dimensional stability, good corrosion resistance and mildew resistance.
Preferably, the preparation method of the modified mineral filler comprises the following steps:
a. the weight ratio is 50-80: weighing coal gangue, wollastonite, kaolin and pyrophyllite in a ratio of 5-10:3-6:2-4, uniformly mixing, crushing, and ball milling in a ball mill to obtain a powdery mixture;
b. heating the powdery mixture to 500-600deg.C at 10deg.C/min, maintaining the temperature for 45-60min, then continuously heating to 650-700deg.C, maintaining the temperature for 20-30min, and naturally cooling to room temperature;
c. pulping the calcined composite mineral filler with water to obtain 30-45% suspension, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution, standing for 20-30min, and filtering;
d. taking 30-40% of ethylene-vinyl acetate copolymer, 25-35% of polyester polyurethane, 3-5% of dipentaerythritol octanol ester, 2-4% of 2,4 '-trichloro-2' -hydroxydiphenyl ether and 4-6% of butyl stearate which are equivalent to the weight of the powdery mixture, and uniformly mixing;
e. uniformly mixing 3-5% of methoxy polyethylene glycol monomethacrylate and 2-4% of polymaleic acid;
f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying;
g. and (3) putting the dried mixture into a double-screw extruder for melt blending, modifying the outer sheath 1, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler. The modified composite mineral filler is added into the outer sheath 1 to modify the outer sheath 1, so that the tensile strength, tensile stress and breaking elongation of the cable can be improved, the flexibility is high, the stretching resistance effect is good, and the tear resistance after freezing of the cable are improved.
Example 1:
the utility model provides a cable for trunk line of convenient branch, includes oversheath 1, oversheath 1 endotheca is established outer insulating layer 2, the center in the outer insulating layer 2 sets up tensile well core 3, and tensile well core 3 is tensile fibre bundle or wire rope for the stress point in the cable concentrates on tensile well core 3, improves the tensile strength of cable. The annular array sets up four first backup pads 4 on the tensile well core 3, and four first backup pads 4 are cross-shaped and arrange the aliquotation in with outer insulating layer 2 four accommodation space, set up three wire in every accommodation space, and many cables are wholly buried underground, can not produce mutual interference between the cable of different grade type for the wire in every accommodation space can all be as independent branch. The conductor comprises a conductor 7, wherein the outside of the conductor 7 is sequentially coated with an isolation layer 71, a conductor shielding layer 72 and an inner insulating layer 73 from inside to outside, so that mutual interference among the conductors is avoided, and the isolation layer 71, the conductor shielding layer 72 and the inner insulating layer 73 continuously protect the conductors after independent branching, so that the branched conductors can perform geographic operation; the outer insulating layer 2 and the inner insulating layer 73 are made of ethylene propylene rubber which takes ethylene propylene diene monomer rubber, modified ethylene propylene rubber, thermoplastic ethylene propylene rubber and the like as main components, and the isolation layer 71 is a high flame-retardant polyester tape isolation layer, so that the flame retardance of the cable is improved. One side of the first supporting plate 4 is provided with a first arc-shaped plate 5, the other side of the first supporting plate 4 is provided with a second arc-shaped plate 6, a guide channel 74 matched with a wire is formed between the first arc-shaped plate 5 and the second arc-shaped plate 6 in the same accommodating space, and the second arc-shaped plate 6 is an elastic plate, so that the wire can conveniently pass in and out from the guide channel 74. The one end that core 3 was kept away from to first backup pad 4 sets up first recess, set up first tear strip 41 in the first recess, the one end that first backup pad 4 was kept away from to first arc 5 sets up second backup pad 8, the other end and the outer insulating layer 2 of second backup pad 8 are connected, set up the second recess in the second backup pad 8, set up second tear strip 81 in the second recess, set up connecting plate 9 on the first arc 5, the other end and the outer insulating layer 2 of connecting plate 9 are connected, the one end that first arc 5 was kept away from to connecting plate 9 sets up baffle 91, fire-retardant filler 42 is filled in first recess, second recess, increases the fire resistance of cable, and outer sheath 1, outer insulating layer 2 still are a relatively sealed environmental protection not branched wire under the support of connecting plate 9 behind the wire branch, can branch to many parallel wires fast.
Example 2:
the utility model provides a cable for trunk line of convenient branch, includes oversheath 1, oversheath 1 endotheca is established outer insulating layer 2, the center in the outer insulating layer 2 sets up tensile well core 3, and tensile well core 3 is tensile fibre bundle or wire rope for the stress point in the cable concentrates on tensile well core 3, improves the tensile strength of cable. The annular array sets up four first backup pads 4 on the tensile well core 3, and four first backup pads 4 are cross-shaped and arrange the aliquotation in with outer insulating layer 2 four accommodation space, set up three wire in every accommodation space, and many cables are wholly buried underground, can not produce mutual interference between the cable of different grade type for the wire in every accommodation space can all be as independent branch. One side of the first supporting plate 4 is provided with a first arc-shaped plate 5, the other side of the first supporting plate 4 is provided with a second arc-shaped plate 6, a guide channel 74 matched with a wire is formed between the first arc-shaped plate 5 and the second arc-shaped plate 6 in the same accommodating space, and the second arc-shaped plate 6 is an elastic plate, so that the wire can conveniently pass in and out from the guide channel 74. The one end that core 3 was kept away from to first backup pad 4 sets up first recess, set up first tear strip 41 in the first recess, the one end that first backup pad 4 was kept away from to first arc 5 sets up second backup pad 8, the other end and the outer insulating layer 2 of second backup pad 8 are connected, set up the second recess in the second backup pad 8, set up second tear strip 81 in the second recess, set up connecting plate 9 on the first arc 5, the other end and the outer insulating layer 2 of connecting plate 9 are connected, the one end that first arc 5 was kept away from to connecting plate 9 sets up baffle 91, outer sheath 1 includes following weight portion raw materials: 85 parts of PVC resin, 20 parts of ethylene glycol phthalate, 30 parts of carbon black N660, 3 parts of polyethylene wax, 2 parts of a calcium-zinc composite stabilizer, 15 parts of calcium stearate, 16 parts of modified mineral filler, 15 parts of vinyl trimethoxy silane, 10 parts of di-N-butyl sebacate, 12 parts of castor oil, 4 parts of methyl parahydroxybenzoate, 2 parts of an antioxidant, 16 parts of an ethylene-vinyl acetate copolymer, 4 parts of zinc stearate, 0.8 part of an antioxidant, 90 parts of abamectin, 15 parts of asarin and 15 parts of dihydrocapsaicin, so that the outer sheath 1 has excellent flame retardance and insulation performance, good water resistance, low shrinkage, good dimensional stability and good corrosion resistance and has a mildew-proof function. The preparation method of the modified mineral filler comprises the following steps: a. the weight ratio of the components is 80: weighing coal gangue, wollastonite, kaolin and pyrophyllite, uniformly mixing, crushing, and ball milling in a ball mill to obtain a powdery mixture; b. heating the powdery mixture to 600 ℃ at 10 ℃/min, preserving heat for 60min, then continuously heating to 700 ℃, preserving heat for 30min, and naturally cooling to room temperature; c. pulping the calcined composite mineral filler with water to obtain 30-45% suspension, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution, standing for 30min, and filtering; d. mixing ethylene-vinyl acetate copolymer 40 wt%, polyester polyurethane 35 wt%, dipentaerythritol octanol 5 wt%, 2,4 '-trichloro-2' -hydroxy diphenyl ether 4 wt% and butyl stearate 6 wt%; e. uniformly mixing methoxy polyethylene glycol monomethacrylate accounting for 5% of the weight of the powder mixture and polymaleic acid accounting for 2-4%; f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying; g. and (3) putting the dried mixture into a double-screw extruder for melt blending, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler. The modified composite mineral filler is added into the outer sheath 1, so that the tensile strength, tensile stress and elongation at break of the cable can be improved, the flexibility is high, the stretching resistance effect is good, and the tear resistance after freezing of the cable are improved.
Example 3:
the utility model provides a cable for trunk line of convenient branch, includes oversheath 1, oversheath 1 endotheca is established outer insulating layer 2, the center in the outer insulating layer 2 sets up tensile well core 3, and tensile well core 3 is tensile fibre bundle or wire rope for the stress point in the cable concentrates on tensile well core 3, improves the tensile strength of cable. The annular array sets up four first backup pads 4 on the tensile well core 3, and four first backup pads 4 are cross-shaped and arrange the aliquotation in with outer insulating layer 2 four accommodation space, set up three wire in every accommodation space, and many cables are wholly buried underground, can not produce mutual interference between the cable of different grade type for the wire in every accommodation space can all be as independent branch. One side of the first supporting plate 4 is provided with a first arc-shaped plate 5, the other side of the first supporting plate 4 is provided with a second arc-shaped plate 6, a guide channel 74 matched with a wire is formed between the first arc-shaped plate 5 and the second arc-shaped plate 6 in the same accommodating space, and the second arc-shaped plate 6 is an elastic plate, so that the wire can conveniently pass in and out from the guide channel 74. The one end that core 3 was kept away from to first backup pad 4 sets up first recess, set up first tear strip 41 in the first recess, the one end that first backup pad 4 was kept away from to first arc 5 sets up second backup pad 8, the other end and the outer insulating layer 2 of second backup pad 8 are connected, set up the second recess in the second backup pad 8, set up second tear strip 81 in the second recess, set up connecting plate 9 on the first arc 5, the other end and the outer insulating layer 2 of connecting plate 9 are connected, the one end that first arc 5 was kept away from to connecting plate 9 sets up baffle 91, outer sheath 1 includes following weight portion raw materials: 70 parts of PVC resin, 15 parts of ethylene glycol phthalate, 25 parts of carbon black N660, 2 parts of polyethylene wax, 1.5 parts of calcium-zinc composite stabilizer, 13 parts of calcium stearate, 12 parts of modified mineral filler, 12 parts of vinyl trimethoxysilane, 8 parts of di-N-butyl sebacate, 8 parts of castor oil, 3 parts of methyl parahydroxybenzoate, 1.5 parts of antioxidant, 10 parts of ethylene-vinyl acetate copolymer, 3 parts of zinc stearate, 0.6 part of antioxidant, 80 parts of abamectin, 12 parts of asarin and 10 parts of dihydrocapsaicin, so that the outer sheath 1 has excellent flame retardance and insulation performance, good water resistance, low shrinkage, good dimensional stability, good corrosion resistance and mildew resistance. The preparation method of the modified mineral filler comprises the following steps: a. the weight ratio is 60: weighing coal gangue, wollastonite, kaolin and pyrophyllite, uniformly mixing, crushing, and ball milling in a ball mill to obtain a powdery mixture; b. heating the powdery mixture to 550 ℃ at 10 ℃/min, preserving heat for 50min, then continuously heating to 680 ℃, preserving heat for 25min, and naturally cooling to room temperature; c. pulping the calcined composite mineral filler with water to obtain a suspension with a concentration of 38%, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution to neutrality, standing for 20-30min, and filtering; d. mixing ethylene-vinyl acetate copolymer (35 wt.%) corresponding to the powder mixture, polyester polyurethane (30 wt.%), dipentaerythritol octanol ester (4 wt.%), 2,4 '-trichloro-2' -hydroxydiphenyl ether (3 wt.%) and butyl stearate (5 wt.%) uniformly; e. uniformly mixing methoxy polyethylene glycol monomethacrylate accounting for 4% of the weight of the powder mixture and polymaleic acid accounting for 2-4%; f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying; g. and (3) putting the dried mixture into a double-screw extruder for melt blending, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler. The modified composite mineral filler is added into the outer sheath 1, so that the tensile strength, tensile stress and elongation at break of the cable can be improved, the flexibility is high, the stretching resistance effect is good, and the tear resistance after freezing of the cable are improved.
Example 4:
the utility model provides a cable for trunk line of convenient branch, includes oversheath 1, oversheath 1 endotheca is established outer insulating layer 2, the center in the outer insulating layer 2 sets up tensile well core 3, and tensile well core 3 is tensile fibre bundle or wire rope for the stress point in the cable concentrates on tensile well core 3, improves the tensile strength of cable. The annular array sets up four first backup pads 4 on the tensile well core 3, and four first backup pads 4 are cross-shaped and arrange the aliquotation in with outer insulating layer 2 four accommodation space, set up three wire in every accommodation space, and many cables are wholly buried underground, can not produce mutual interference between the cable of different grade type for the wire in every accommodation space can all be as independent branch. One side of the first supporting plate 4 is provided with a first arc-shaped plate 5, the other side of the first supporting plate 4 is provided with a second arc-shaped plate 6, a guide channel 74 matched with a wire is formed between the first arc-shaped plate 5 and the second arc-shaped plate 6 in the same accommodating space, and the second arc-shaped plate 6 is an elastic plate, so that the wire can conveniently pass in and out from the guide channel 74. The one end that core 3 was kept away from to first backup pad 4 sets up first recess, set up first tear strip 41 in the first recess, the one end that first backup pad 4 was kept away from to first arc 5 sets up second backup pad 8, the other end and the outer insulating layer 2 of second backup pad 8 are connected, set up the second recess in the second backup pad 8, set up second tear strip 81 in the second recess, set up connecting plate 9 on the first arc 5, the other end and the outer insulating layer 2 of connecting plate 9 are connected, the one end that first arc 5 was kept away from to connecting plate 9 sets up baffle 91, outer sheath 1 includes following weight portion raw materials: 65 parts of PVC resin, 10 parts of ethylene glycol phthalate, 20 parts of carbon black N660, 1 part of polyethylene wax, 1 part of calcium-zinc composite stabilizer, 10-parts of calcium stearate, 8 parts of modified mineral filler, 10 parts of vinyl trimethoxysilane, 5 parts of di-N-butyl sebacate, 6 parts of castor oil, 2 parts of methyl parahydroxybenzoate, 1 part of antioxidant, 8 parts of ethylene-vinyl acetate copolymer, 2 parts of zinc stearate, 0.2 part of antioxidant, 70 parts of abamectin, 5 parts of asarin and 5 parts of dihydrocapsaicin, so that the outer sheath 1 has excellent flame retardance and insulation performance, good water resistance, low shrinkage, good dimensional stability, good corrosion resistance and mildew resistance. The preparation method of the modified mineral filler comprises the following steps: a. the weight ratio is 50: weighing gangue, wollastonite, kaolin and pyrophyllite, uniformly mixing, crushing, and ball milling in a ball mill to obtain a powdery mixture; b. heating the powdery mixture to 500 ℃ at 10 ℃/min, preserving heat for 45min, then continuously heating to 650 ℃, preserving heat for 20min, and naturally cooling to room temperature; c. pulping the calcined composite mineral filler with water to obtain 30% suspension, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution, standing for 20min, and filtering; d. mixing ethylene-vinyl acetate copolymer 30 wt%, polyester polyurethane 25 wt%, dipentaerythritol octanol 3 wt%, 2,4 '-trichloro-2' -hydroxy diphenyl ether 2 wt% and butyl stearate 4 wt%; e. uniformly mixing methoxy polyethylene glycol monomethacrylate accounting for 3% of the weight of the powder mixture and polymaleic acid accounting for 2%; f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying; g. and (3) putting the dried mixture into a double-screw extruder for melt blending, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler. The modified composite mineral filler is added into the outer sheath 1, so that the tensile strength, tensile stress and elongation at break of the cable can be improved, the flexibility is high, the stretching resistance effect is good, and the tear resistance after freezing of the cable are improved.
Claims (4)
1. The utility model provides a cable for trunk line of convenient branch, includes oversheath (1), its characterized in that: the utility model discloses a novel high-voltage cable winding machine, including outer sheath (1) and inner sheath, outer insulating layer (2) are established to the endotheca in outer insulating layer (1), center in outer insulating layer (2) sets up tensile well core (3), annular array sets up four first backup pad (4) on tensile well core (3), four first backup pad (4) are cross and divide into four accommodation space in with outer insulating layer (2) equally, set up three wire in each accommodation space, one side of first backup pad (4) sets up first arc (5), the opposite side of first backup pad (4) sets up second arc (6), second arc (6) are the elastic plate, form between first arc (5) in same accommodation space, second arc (6) with wire matched with guide way (74), one end that tensile well core (3) were kept away from to first backup pad (4) sets up first recess, set up first tear strip (41) in the first recess, one end that first backup pad (4) were kept away from sets up second backup pad (8), second arc (8) are set up to second arc (8), second arc (8) are connected with second arc (8) set up in the second recess (8), the other end of the connecting plate (9) is connected with the outer insulating layer (2), and a baffle (91) is arranged at one end of the connecting plate (9) far away from the first arc-shaped plate (5);
the outer sheath comprises the following raw materials in parts by weight: 65-85 parts of PVC resin, 10-20 parts of ethylene phthalate, 20-30 parts of carbon black N660, 1-3 parts of polyethylene wax, 1-2 parts of calcium zinc composite stabilizer, 10-15 parts of calcium stearate, 8-16 parts of modified mineral filler, 10-15 parts of vinyl trimethoxy silane, 5-10 parts of di-N-butyl sebacate, 6-12 parts of castor oil, 2-4 parts of methyl p-hydroxybenzoate, 1-2 parts of antioxidant, 8-16 parts of ethylene-vinyl acetate copolymer, 2-4 parts of zinc stearate, 0.2-0.8 part of antioxidant, 70-90 parts of abamectin, 5-15 parts of asarum grease and 5-15 parts of dihydrocapsaicin.
2. A branching-facilitating trunk cable according to claim 1, wherein: the wire comprises a conductor (7), wherein the outside of the conductor (7) is sequentially coated with an isolation layer (71), a conductor shielding layer (72) and an inner insulating layer (73) from inside to outside, and the isolation layer (71) is a high-flame-retardant polyester tape isolation layer.
3. A branching-facilitating trunk cable according to claim 1, wherein: and the first groove and the second groove are filled with flame retardant filler (42).
4. A branching-facilitating trunk cable according to claim 1, wherein: the preparation method of the modified mineral filler comprises the following steps:
a. the weight ratio is 50-80: weighing coal gangue, wollastonite, kaolin and pyrophyllite according to a ratio of 5-10:3-6:2-4, uniformly mixing, crushing, and ball-milling in a ball mill to obtain a powdery mixture;
b. heating the powdery mixture to 500-600deg.C at 10deg.C/min, maintaining the temperature for 45-60min, then continuously heating to 650-700deg.C, maintaining the temperature for 20-30min, and naturally cooling to room temperature;
c. pulping the calcined composite mineral filler with water to obtain 30-45% suspension, adjusting pH to 4-5 with 15-20% hydrochloric acid solution, heating to 70-80deg.C in water bath, grinding at 1500-2000rpm for 10-15min, neutralizing with 10-15% sodium hydroxide solution, standing for 20-30min, and filtering;
d. taking 30-40% of ethylene-vinyl acetate copolymer, 25-35% of polyester polyurethane, 3-5% of dipentaerythritol octanol ester, 2-4% of 2,4 '-trichloro-2' -hydroxydiphenyl ether and 4-6% of butyl stearate which are equivalent to the weight of the powdery mixture, and uniformly mixing;
e. uniformly mixing 3-5% of methoxy polyethylene glycol monomethacrylate and 2-4% of polymaleic acid;
f. mixing the mixture with the materials processed in the steps c, d and e uniformly and drying;
g. and (3) putting the dried mixture into a double-screw extruder for melt blending, extruding and granulating, and naturally cooling to room temperature to obtain the modified composite mineral filler.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079314.5A CN107731367B (en) | 2017-11-06 | 2017-11-06 | Main line cable convenient for branching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711079314.5A CN107731367B (en) | 2017-11-06 | 2017-11-06 | Main line cable convenient for branching |
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| CN107731367A CN107731367A (en) | 2018-02-23 |
| CN107731367B true CN107731367B (en) | 2023-11-03 |
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| CN104134487A (en) * | 2014-09-01 | 2014-11-05 | 晶锋集团股份有限公司 | Isolated cable |
| CN204045233U (en) * | 2014-09-05 | 2014-12-24 | 苏州洛特兰新材料科技有限公司 | A kind of three-phase wire being convenient to connect up |
| CN106057342A (en) * | 2016-07-25 | 2016-10-26 | 苏州东威连接器电子有限公司 | Pre-branch cable |
| CN207587411U (en) * | 2017-11-06 | 2018-07-06 | 大连理工高邮研究院有限公司 | A kind of backbone cable for facilitating branch |
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| Publication number | Publication date |
|---|---|
| CN107731367A (en) | 2018-02-23 |
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