CN106099779A - A kind of high voltage tolerant input electric pipe and preparation method thereof - Google Patents

A kind of high voltage tolerant input electric pipe and preparation method thereof Download PDF

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Publication number
CN106099779A
CN106099779A CN201610474581.1A CN201610474581A CN106099779A CN 106099779 A CN106099779 A CN 106099779A CN 201610474581 A CN201610474581 A CN 201610474581A CN 106099779 A CN106099779 A CN 106099779A
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CN
China
Prior art keywords
protection layer
electroduct
hollow metal
high voltage
input electric
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Pending
Application number
CN201610474581.1A
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Chinese (zh)
Inventor
黄修林
卞周宏
黄绍龙
彭波
唐涛
金帆
罗霄
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Auspicious electric power project engineering Equipment Limited, south, Wuhan
Hubei University
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Hubei University
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Priority to CN201610474581.1A priority Critical patent/CN106099779A/en
Publication of CN106099779A publication Critical patent/CN106099779A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof
    • H02G3/0412—Heat or fire protective means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0481—Tubings, i.e. having a closed section with a circular cross-section
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/90—Electrical properties
    • C04B2111/92—Electrically insulating materials

Abstract

The invention discloses a kind of high voltage tolerant input electric pipe; its outer layer arranges shielding protection layer; shielding protection layer internal circumferential uniform intervals arranges some bundle of hollow metal electroducts; the axis of hollow metal electroduct is parallel with the axis of shielding protection layer or overlaps, and the gap location at shielding protection layer and hollow metal electroduct is filled with insulating barrier；Wherein, described insulating barrier uses polymer cement concrete, perfusion cooling circulation insulating oil in hollow metal electroduct.Use new polymers cement concrete as power cable insulation material, substitute the tradition organic insulation such as crosslinked polyethylene or high rigidity EP rubbers, the problem solving the aging and insulation degradation that existing organic insulation exists；Simultaneously by shielding protection layer and hollow metal electroduct are carried out structure design, make high voltage tolerant input electric pipe described in gained show the excellent properties such as intensity insulation high, high, high temperature resistant, easy heat radiation, good endurance, be suitable for popularization and application.

Description

A kind of high voltage tolerant input electric pipe and preparation method thereof
Technical field
The invention belongs to technical field of power transmission, be specifically related to a kind of high voltage tolerant input electric pipe and preparation method thereof.
Background technology
High voltage power transmission mode mainly has aerial line, power cable and gas-insulated metal closed power transmission line (GIL) at present Three kinds.Aerial line insulation mainly relies on air insulation, and therefore spaced apart is relatively big, and active channel width is big, easily by filthy, thunder Electricity, wind and snow, ice damage etc. external environment influence, overhead transmission line is with a varied topography simultaneously, safeguards that input cost is big, when improving voltage Channel width and wire need to be increased further ground level, comprehensive cost will be increased；Power cable generally uses organic material exhausted Edge, phase spacing is compact, can take up room little with underground, submarine laying, but owing to heat radiation and organic insulation are at high temperature ring Aging and insulation degradation problem under border, transmission capacity and service life are by a definite limitation；GIL comes from SF6The metal of insulation Enclosed busbar, is a kind of employing SF6Gas or SF6And N2High voltage that Mixed gas insulation, shell and conductor coaxial are arranged, big Current power transmission equipment, has advantage in terms of Large Copacity long distance powedr transmission, the advantage of GIL for take up an area less, without electromagnetic interference, Not by extraneous natural environment influence, but GIL equipment investment is big, and later maintenance cost is high.
Therefore, need a kind of novel high-pressure power transfer conduit technology of proposition badly, the transmission capacity solving existing transmission line of electricity is not enough, The difficult problems such as the proportion of goods damageds are higher, engineering comprehensive cost is higher.It is exhausted that polymer concrete has that cost is low, temperature classification is high and enough The feature of edge intensity, uses it for power transfer conduit, it is possible to resolve the transmission capacity of existing power transmission mode is not enough, engineering comprehensive cost is inclined A high difficult problem.
Summary of the invention
For solving the limited and existing power cable of overhead transmission line spatial environments, gas-insulated metal closed power transmission line conveying The inferior position that off-capacity, the proportion of goods damageds are higher, engineering comprehensive cost is high, it is an object of the invention to provide a kind of high voltage tolerant input electric pipe And preparation method thereof, the transmission voltage of described high voltage tolerant input electric pipe can reach 35kV, and transmission capacity reaches 21000kW h, Power attenuation is low, and environmental suitability is strong.
For achieving the above object, the technical solution used in the present invention is:
A kind of high voltage tolerant input electric pipe, its outer layer arranges shielding protection layer, shielding protection layer internal circumferential uniform intervals cloth Putting some bundle of hollow metal electroducts, the axis of hollow metal electroduct is parallel with the axis of shielding protection layer or overlaps, at screen The gap location covered between protective layer and hollow metal electroduct is filled with insulating barrier；Wherein, described insulating barrier uses polymer Cement concrete, perfusion cooling circulation insulating oil in hollow metal electroduct.
In such scheme, the quantity of described hollow metal electroduct is 1～6 bundles.
Preferably, the quantity of described hollow metal electroduct is 1 bundle, 3 bundles, 4 bundles or 6 bundles.
In such scheme, described cooling circulation insulating oil uses temperature to be the insulating oil of 5-15 DEG C.
In such scheme, described hollow metal electroduct includes metal tube, semiconductor layer and the insulation arranged from inside to outside Ceramic layer.
In such scheme, described metal tube, semiconductor layer and dielectric ceramic layer are along the thickness ratio of pipeline configuration radial direction For 100:(0.1-1): (1-30).
Preferably, the internal diameter d of described metal tube2=5-15mm, metal tube thickness δ radially3=5-10mm, quasiconductor Layer thickness δ radially5=0.01-0.1mm, dielectric ceramic layer thickness δ radially4=0.2-3mm.
In such scheme, the preparation process of described hollow metal electroduct includes: 1) polished by outer surface of metal pipe Pretreatment, removes part of the metal oxide and other impurity；2) by quasiconductor powder and sintering aid, silicochromium composite solution and water Mixed grinding, prepares semiconductor layer slurry；3) semiconductor layer slurry being evenly applied to outer surface of metal pipe, room temperature dries in the shade into Film；4) being transferred to ceramic sintering furnace and carry out Low Temperature Thermal sintering, sintering schedule is the ramp with 10-20 DEG C/min to 450- 550 DEG C, it is incubated 2-4h, is slowly dropped to room temperature；5) the outer surface of metal pipe semiconductor layer sintered is carried out grinding process, go to portion Point metal-oxide and other impurity, by step 2) in powder semi-conducting material replace with insulating ceramics powder, repeat step 2), 3), 4) carry out dielectric ceramic layer sintering, obtain described hollow metal pipe.
In such scheme, described semiconductor layer uses the one in stibium oxide, zinc oxide, cobalt oxide, tungsten oxide；Described absolutely Edge ceramic layer uses steatite ceramics, forsterite ceramics, mullite ceramic, Al2O3In pottery, SiC ceramic, AlN ceramic one Kind；Metal tube uses the one in metallic aluminium, metallic copper, aluminium alloy, copper alloy.
In such scheme, described polymer cement concrete by cement, ultra-fine gather materials, fine powder, extender, macromolecule 100:(150-300 pressed by emulsion, water reducer, defoamer, economization agent and fiber): (5-50): (2-8): (15-40): (0.5- 1.0): (0.05-0.10): (0.1-1): the mass ratio of (0.02-0.08) is prepared from.
In such scheme, described ultra-fine gather materials for glass sand, SiO2Effective content is more than 99.9%, Fe2O3Content is little In 0.001%；Described fine powder is one or more in SILICA FUME, flyash, wollastonite, mica powder, metakaolin；Institute Stating macromolecule emulsion is epoxy resin latex, ethylene acid esters emulsion, acrylic acid ester emulsion, styrene-acrylate emulsion, acetic acid One or more in ethylene acid esters emulsion, vinylacetate, styrene-butadiene latex, propyl benzene latex；Described fiber be polyethylene fibre, One or more in polypropylene fibre, polyacrylonitrile fibre, vinal, basalt fibre.
In such scheme, the preparation process of described polymer cement concrete is: 1) by cement, ultra-fine gather materials, fine powder 100:(150-300 pressed by material, extender, macromolecule emulsion, water reducer, defoamer, economization agent and fiber): (5-50): (2-8): (15-40): (0.5-1.0): (0.05-0.10): (0.1-1): the mass ratio of (0.02-0.08) weighs；2) batch mixing: by water Mud, ultra-fine gather materials, fine powder, extender and fiber carry out dry mixing 1-2min in joining high-speed stirred container, be subsequently adding The macromolecule emulsion that weighs continues mix 1-2min, adds water reducer, defoamer and economization agent and carries out shear agitation and obtain and newly mix High voltage tolerant input electric pipe material.
In such scheme, described shielding protection layer is made up of metal screen layer and organic protection layer.
In such scheme, described metal screen layer and organic protection layer thickness radially is than being (1-10): 100.
Preferably, described metal screen layer thickness δ radially1=0.1-1mm, organic protection layer thickness δ radially2 =3-10mm.
In such scheme, described organic protection layer use polyethylene, crosslinked polyethylene, polrvinyl chloride, cross-linked polrvinyl chloride, One in EP rubbers edge sheath to the greatest extent；Described metal screen layer is the one in tinsel, metal mesh belt, metal tube.
Preferably, when shielding protection layer internal circumferential uniform intervals arranges 3 bundle of hollow metal electroduct, d is met2=5- 15mm, δ3=5-10mm, δ4=0.2-3mm, δ5=0.01-0.1mm, d1=80-150mm, δ1=0.1-1mm, δ2=3-10mm； When shielding protection layer internal circumferential uniform intervals arranges 4 bundle of hollow metal electroduct, meet d2=10-25mm, δ3=5-20mm, δ4=0.5-5mm, δ5=0.05-0.1mm, d1=200-350mm, δ1=0.2-2mm, δ2=5-10mm；Inside shielding protection layer D when circumference uniform intervals arranges 6 bundle of hollow metal electroduct2=15-25mm, δ3=10-15mm, δ4=0.5-5mm, δ5= 0.02-0.1mm, d1=300-500mm, δ1=0.2-5mm, δ2=5-20mm.
The preparation method of above-mentioned a kind of high voltage tolerant input electric pipe, comprises the steps: 1) by design chi Very little prepare shielding protection layer and hollow metal electroduct, sky metal electroduct be enclosed within shielding protection layer, carry out vertically-mounted, The axis of hollow metal electroduct is parallel with the axis of shielding protection layer or overlaps；2) by step 1) in mounted shielding protection Layer and the bottom of hollow metal electroduct seal, reserved pump adapter fixation, pipeline top arrange vacuum-pumping tube and Discharge pipe, installation vibrator is fixed and be spaced to tube wall surrounding；3) polymer cement concrete is prepared by recipe requirements；4) unlatching is taken out Vacuscope and vibrator, the gap bottom shielding protection layer and hollow metal electroduct begins pumping polymer cement coagulation Soil, the condition of negative pressure of whole process control 0.1-0.2Mpa, treat that pipeline top plasma discharge sky stream slurry is stable, mechanical seal pumping pipe, Discharge pipe and vacuum-pumping tube, move to 40-60 DEG C of humidity fog room more than High Temperature Curing 24h, obtain described resistance to after room temperature maintenance 6-12h High voltage power transmission pipeline.
The principle of the present invention: the emulsion that the present invention selects the polymer of excellent insulation performance to be prepared as replaces water completely, with Cement, fine filler etc. are mixed with out the pumpable cement of high-performance-polymer composite pulp (PCC), after polymer dehydration solidification The thin polymer film formed effectively has blocked power transfer conduit insulating barrier internal solution hole transmission channels, it is ensured that at high voltage ring The insulating properties of power transfer conduit material in border, use defoamer can reduce the surface tension of organic polymer particles, increase poly- The compound compatibility in inorganic material system, it is to avoid the residual of PCC composite pulp air entrapment, enhances the cause of PCC material Close property.Extender and economization agent are applied in power transfer conduit, make PCC concrete material aquation middle and late stage expand continually and steadily, The problem solving concrete shrinkage unsticking, it is ensured that shielding protection layer, hollow metal electroduct are firm with intermediate insulating layer Bonding, adds compactness and the durability of insulating barrier, also enhances the durability of this high voltage tolerant input electric pipe.Use insulating oil The mode of circulation, can effectively take away the heat that power transfer conduit power consumption under high pressure produces, reduces holding of whole pipeline system Continuous operating temperature rise, improves the durability of insulating barrier；Use jacking vacuum pumping technology, by PCC concrete material by pipeline at the bottom of Portion is gradually pumped into pipeline top, makes intermediate insulation concrete finer and close, effectively reduces the content of bubble in PCC, it is ensured that Insulating properties.
The invention have the benefit that
1) use new polymers cement concrete as power cable insulation material, substitute tradition crosslinked polyethylene or height The organic insulations such as hardness EP rubbers, the problem solving the aging and insulation degradation that existing organic insulation exists, Reduce electroduct wire material cost simultaneously.
2) for different types of power transfer conduit such as different power transfer conduit requirements, design Dan Shu, 3 bundles, 4 bundles, 6 bundles, meet Conveying requirement under different conveying voltages and transport condition, this high voltage tolerant input electric pipe maximum stable running voltage can reach 35kV, maximum voltage is up to 40kV.
3) high voltage tolerant input electric pipe good endurance of the present invention, insulating barrier PCC concrete dielectric strength loss rate is little, energy Effectively reduce power transfer conduit construction and maintenance cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of high voltage tolerant input electric pipe described in embodiment 1.
Fig. 2 is the structural representation of hollow metal electroduct described in embodiment 1.
Fig. 3 is the structural representation of shielding protection layer described in embodiment 1.
Fig. 4 is the structural representation of high voltage tolerant input electric pipe described in embodiment 2-3.
Fig. 5 is the structural representation of high voltage tolerant input electric pipe described in embodiment 4.
Fig. 6 is the structural representation of high voltage tolerant input electric pipe described in embodiment 5.
Wherein, 1 arranges shielding protection layer for outer layer, and 2 is hollow metal electroduct, and 3 is insulating barrier, and 4 is insulating oil, 2-1 For metal tube, 2-2 is semiconductor layer, and 2-3 is dielectric ceramic layer, and 3-1 is metal screen layer, and 3-2 is organic protection layer.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention is not It is limited only to the following examples.
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but the present invention is not It is limited only to the following examples.
As no specific instructions, the reagent of employing is commercially available chemical reagent or industrial products to following example.
In following example, described insulating barrier uses polymer cement concrete, and its preparation process is: 1) by cement, super Fine aggregate (glass sand that ten thousand river quartz Development Co., Ltds produce, particle size range 0.1-0.01mm, SiO2Effective content is big In 99.9%, Fe2O3Content be less than 0.001%), fine powder (Nanjing Painier Technology Co., Ltd. produce micro-silicon Powder, dioxide-containing silica is more than 90%, specific surface area 250m2/ kg, activity index 110%), (Tianjin leopard ring share has extender The HCSA high-performance cement expansive agent that limit company produces, specific surface area 280m2/ kg, within 21 days, air limited expansion rate is more than 0.02%), macromolecule emulsion (Shanghai Aishibo Organosilicon Material Co., Ltd. produce MU series aqueous epoxy resin emulsion, Resin content 50%, epoxide equivalent 500g/mol), (Jiangsu Subotexin Material Co., Ltd produces water reducerPolycarboxylic acids reducing and anti-cracking water reducer, solid content 23%, water-reducing rate 25%), (Hefei ten thousand becomes environmental protection science and technology to have to defoamer Limit company produce BYC-014A Polyether Modified Polysiloxanes Defoaming Agent, active matter effective content be more than 18%), economization agent (Jiangsu Su Bote new material limited company producesType polyethers economization agent) and polypropylene fibre with 100:200: 25:5:30:0.6:0.07:0.5:0.06 mass ratio weigh；2) batch mixing: by cement, ultra-fine gather materials, fine powder, swollen Swollen dose and fiber carry out dry mixing 2min in joining high-speed stirred container, are subsequently adding the macromolecule emulsion weighed and continue mix 2min, adds water reducer, economization agent and defoamer and obtains with shear agitation and newly mix high voltage tolerant input electric pipe insulant.
In following example, the preparation process of described hollow metal electroduct includes: 1) carry out outer surface of metal pipe beating Mill pretreatment, removes part of the metal oxide and other impurity；2) by quasiconductor powder (cobalt oxide) and sintering aid (calcium oxide Mixture with silicon dioxide 1:1 in mass ratio), silicochromium composite solution and water mixed grinding, prepare semiconductor layer slurry；3) will Semiconductor layer slurry is evenly applied to outer surface of metal pipe, and room temperature dries in the shade film forming；4) it is transferred to ceramic sintering furnace and carries out Low Temperature Thermal Sintering, sintering schedule is that 10 DEG C/min is warming up to 500 DEG C, is incubated 2.5h, is slowly dropped to room temperature；5) outside the metal tube that will have sintered Surface semiconducting layer carries out grinding process, remove part of the metal oxide and other impurity, by above-mentioned steps 2) in quasiconductor powder Material replaces with insulating ceramics powder, repeats step 2), 3), 4) carry out insulating barrier sintering, obtain described hollow metal pipe.
In following example, the preparation method of described high voltage tolerant input electric pipe is: 1) prepare shielding protection by design size Layer and hollow metal electroduct, be enclosed within hollow metal electroduct in shielding protection layer, carry out vertically-mounted, and hollow metal is transmitted electricity The axis of pipe is parallel with the axis of shielding protection layer or overlaps；2) by step 1) in mounted shielding protection layer and hollow metal The bottom of electroduct seals, and reserved pump adapter fixation, pipeline top arranges vacuum-pumping tube and discharge pipe, tube wall four Week is fixing and is spaced installation vibrator；3) polymer cement concrete is prepared by recipe requirements；4) evacuation instrument and vibration are opened Device, the gap bottom shielding protection layer and hollow metal electroduct begins pumping polymer cement concrete, whole the most program control The condition of negative pressure of 0.2Mpa processed, treats that pipeline top plasma discharge sky stream slurry stablizes 30s, mechanical seal pumping pipe, discharge pipe and evacuation Pipe, moves to 50 DEG C of humidity fog room more than High Temperature Curing 24h, obtains described high voltage tolerant input electric pipe after room temperature maintenance 12h.
Embodiment 1
A kind of high voltage tolerant input electric pipe, its structural representation is shown in that Fig. 1, outer layer arrange shielding protection layer 1, shielding protection layer 1 Interior arranging a branch of hollow metal electroduct 2 along axis, the gap location at shielding protection layer 1 and hollow metal electroduct 2 is filled and is set Put insulating barrier 3；Wherein, described insulating barrier 3 uses polymer cement concrete, perfusion cooling circulation in hollow metal electroduct 2 Insulating oil 4.
As in figure 2 it is shown, described hollow metal electroduct 2 includes metal tube 2-1, the semiconductor layer set gradually from inside to outside 2-2 and dielectric ceramic layer 2-3.Shielding protection layer 3 is constituted (see Fig. 3) by metal screen layer 3-1 and organic protection layer 3-2.
In high voltage tolerant input electric pipe described in the present embodiment, the dimensional requirement of each component and the material of employing are shown in Table 1 and table respectively 2。
Embodiment 2-3
A kind of high voltage tolerant input electric pipe, its structural representation is shown in that Fig. 4, outer layer arrange shielding protection layer, in shielding protection layer Portion's circumference uniform intervals arranges 3 bundle of hollow metal electroducts, and the axis of hollow metal electroduct is flat with the axis of shielding protection layer OK, the gap location at shielding protection layer and hollow metal electroduct is filled with insulating barrier；Wherein, described insulating barrier uses polymerization Thing cement concrete, perfusion cooling circulation insulating oil in hollow metal electroduct.
The structure of described hollow metal electroduct and shielding protection layer is same as in Example 1.
In high voltage tolerant input electric pipe described in embodiment 2-3, the dimensional requirement of each component and the material of employing are shown in Table 1 He respectively Table 2.
Embodiment 4-5
Described in embodiment 4-5, the structure of high voltage tolerant input electric pipe is roughly the same with embodiment 2-3, and difference is, screen Cover protective layer internal circumferential uniform intervals respectively and arrange 4 bundle and 6 bundle of hollow metal electroducts.
A kind of high voltage tolerant input electric pipe structure, its each physical dimension is shown in Table 1, and material therefor is shown in Table 2.Described high pressure resistant transmission of electricity Tables 1 and 2 is shown in respectively by the dimensional requirement of each component of pipeline and the material of employing.
The design size of each component in high voltage tolerant input electric pipe described in table 1 embodiment 1-5
The material that in high voltage tolerant input electric pipe described in table 2 embodiment 1-5, each component uses
The above results shows, high voltage tolerant input electric pipe of the present invention have intensity insulation high, high, high temperature resistant, easy heat radiation, The excellent properties such as good endurance, meet the property indices that standard specifies, beneficially practical engineering application.
The foregoing is only the preferred embodiment of the present invention, it is noted that those of ordinary skill in the art is come Saying, without departing from the concept of the premise of the invention, making some modifications and variations, these broadly fall into the protection model of the present invention Enclose.

Claims (10)

1. a high voltage tolerant input electric pipe, it is characterised in that its outer layer arranges shielding protection layer, and shielding protection layer internal circumferential is equal Some bundle of hollow metal electroducts are arranged at even interval, and the axis of hollow metal electroduct is parallel with the axis of shielding protection layer or heavy Closing, the gap location at shielding protection layer and hollow metal electroduct is filled with insulating barrier；Wherein, described insulating barrier uses polymerization Thing cement concrete, perfusion cooling circulation insulating oil in hollow metal electroduct.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that the quantity of described hollow metal electroduct is 1～6 bundles.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that described cooling circulation insulating oil uses temperature For the insulating oil of 5-15 DEG C.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that described hollow metal electroduct includes by interior Metal tube, semiconductor layer and the dielectric ceramic layer outwards arranged.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that described dielectric ceramic layer uses Talcum pottery Porcelain, forsterite ceramics, mullite ceramic, Al2O3One in pottery, SiC ceramic, AlN ceramic；Semiconductor layer uses oxidation One in antimony, zinc oxide, cobalt oxide, tungsten oxide；Metal tube uses in metallic aluminium, metallic copper, aluminium alloy, copper alloy Kind.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that described polymer cement concrete is by water Mud, ultra-fine gather materials, fine powder, extender, macromolecule emulsion, water reducer, defoamer, economization agent and fiber be by 100:(150- 300): (5-50): (2-8): (15-40): (0.5-1.0): (0.05-0.10): (0.1-1): the mass ratio system of (0.02-0.08) For forming.
High voltage tolerant input electric pipe the most according to claim 6, it is characterised in that described macromolecule emulsion is epoxy resin breast Liquid, ethylene acid esters emulsion, acrylic acid ester emulsion, styrene-acrylate emulsion, vinyl acetate acid esters emulsion, vinylacetate, One or more in styrene-butadiene latex, propyl benzene latex.
High voltage tolerant input electric pipe the most according to claim 1, it is characterised in that described shielding protection layer is by metal screen layer Constitute with organic protection layer.
High voltage power transmission pipeline the most according to claim 8, it is characterised in that described organic protection layer uses polyethylene, friendship One in connection polyethylene, polrvinyl chloride, cross-linked polrvinyl chloride, EP rubbers edge sheath to the greatest extent；Metal screen layer employing tinsel, One in metal mesh belt, metal tube.
10. the preparation method of high voltage tolerant input electric pipe described in any one of claim 1～9, it is characterised in that include walking as follows Rapid: 1) prepare shielding protection layer and hollow metal electroduct by design size, hollow metal electroduct is enclosed within shielding protection layer In, carry out vertically-mounted, the axis of hollow metal electroduct is parallel with the axis of shielding protection layer or overlaps；2) by step 1) in The bottom of mounted shielding protection layer and hollow metal electroduct seals, reserved pump adapter fixation, pipeline top Portion arranges vacuum-pumping tube and discharge pipe, and installation vibrator is fixed and be spaced to tube wall surrounding；3) polymer water is prepared by recipe requirements Cement concrete；4) opening evacuation instrument and vibrator, the gap bottom shielding protection layer and hollow metal electroduct starts pump Send polymer cement concrete, the condition of negative pressure of whole process control 0.1-0.2Mpa, treat that pipeline top plasma discharge sky stream slurry is stable, Mechanical seal pumping pipe, discharge pipe and vacuum-pumping tube, move to 40-60 DEG C of humidity fog room High Temperature Curing after room temperature maintenance 6-12h More than 24h, obtains described high voltage tolerant input electric pipe.
CN201610474581.1A 2016-06-24 2016-06-24 A kind of high voltage tolerant input electric pipe and preparation method thereof Pending CN106099779A (en)

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