CN105219024A - 220kV epoxy type insulated copper shell - Google Patents
220kV epoxy type insulated copper shell Download PDFInfo
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- CN105219024A CN105219024A CN201510683375.7A CN201510683375A CN105219024A CN 105219024 A CN105219024 A CN 105219024A CN 201510683375 A CN201510683375 A CN 201510683375A CN 105219024 A CN105219024 A CN 105219024A
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- copper pipe
- copper
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- silica dioxide
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Abstract
The invention provides a kind of 220kV epoxy type insulated copper shell, belong to technical field of electricity.This 220kV epoxy type insulated copper shell comprises: left copper pipe, is made up of, first copper pipe is sealed and installed with left copper sheathing flange first copper pipe and the first little copper pipe, and first copper pipe side is provided with the left terminals arranged near the first little copper pipe; Right copper pipe, is made up of second largest copper pipe and the second little copper pipe, second largest copper pipe is sealed and installed with right copper sheathing flange, and second largest copper pipe side is provided with the right terminals arranged near the second little copper pipe, and right terminals and left terminals homonymy are arranged; Epoxy insulator, is arranged ringwise and by epoxide resin material casting, epoxy insulator is arranged between left copper sheathing flange and right copper sheathing flange and three is tightly connected; The epoxy resin composite material that described left insulation layer and right insulation layer form by specific components is made.This 220kV epoxy type insulated copper shelling machine is reasonable, electrical insulation properties stable, over-all properties is high, long service life.
Description
Technical field
The invention belongs to technical field of electricity, relate to a kind of 220kV epoxy type insulated copper shell, particularly a kind of 220kV epoxy type insulated copper shell being applicable to intermediate joint of electric cable.
Background technology
In daily life, when growing the installation of distance wiring or power cable, the means connected together by two power cables usually can be adopted to improve the length of cable.
In prior art, the general connection work adopting intermediate joint of electric cable to realize power cable, is provided with copper shell, to realize electric insulation outside intermediate joint of electric cable.But existing most of copper containment structure design is unreasonable, and material is common and single, and its electric insulation effect is undesirable, reduces stability and the work-ing life of power cable work.
In sum, be solve the deficiency on existing copper containment structure, need design a kind of reasonable in design, electrical insulation properties is stablized, the 220kV epoxy type insulated copper shell of good combination property, long service life.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of reasonable in design, electrical insulation properties is stablized, the 220kV epoxy type insulated copper shell of good combination property, long service life.
Object of the present invention realizes by following technical proposal: a kind of 220kV epoxy type insulated copper shell, comprising:
Left copper pipe, be made up of the first copper pipe be connected as a single entity and the first little copper pipe, the diameter of described first copper pipe is greater than the diameter of the first little copper pipe, described first copper pipe is sealed and installed with left copper sheathing flange away from one end of the first little copper pipe, and described first copper pipe side is provided with the left terminals arranged near the first little copper pipe and the left encapsulating mouth arranged near left copper sheathing flange;
Left insulation layer, in the circumferential lateral surface being sealed and coated on left copper pipe and described left encapsulating mouth through left insulation layer;
Right copper pipe, be made up of the second largest copper pipe be connected as a single entity and the second little copper pipe, the diameter of described second largest copper pipe is greater than the diameter of the second little copper pipe, described second largest copper pipe is sealed and installed with away from one end of the second little copper pipe the right copper sheathing flange be oppositely arranged with left copper sheathing flange, described second largest copper pipe side is provided with the right terminals arranged near the second little copper pipe and the right encapsulating mouth arranged near right copper sheathing flange, and described right terminals and left terminals homonymy are arranged;
Right insulation layer, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulation layer;
Epoxy insulator, is arranged ringwise and by epoxide resin material casting, described epoxy insulator is arranged between left copper sheathing flange and right copper sheathing flange and three is tightly connected;
Described left insulation layer and right insulation layer are made by epoxy resin composite material.
In above-mentioned 220kV epoxy type insulated copper shell, described epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 30-50wt%;
Alkali free glass fibre: 5-10wt%;
Nanometer Sb
2o
3: 4-6wt%;
Decabromodiphynly oxide (FR-10): 1-2wt%;
Solidifying agent: 1-5wt%;
Solidifying agent promotor: 2-5wt%;
Surplus is silicon-dioxide.
In 220kV epoxy type insulated copper shell of the present invention, left insulation layer and right insulation layer are made by epoxy resin composite material, and described composite material epoxy resin is matrix, with the addition of strongthener alkali free glass fibre, nanometer Sb simultaneously
2o
3, FR-10, silicon-dioxide, epoxy resin-base not only plays parcel strongthener they are bonded together in the composite, and has and support and stable not only thin but also long fibre columns, prevents the effect of their mutual slippages and wearing and tearing.When matrix material stand under load, epoxy resin-base also plays the effect of transmitted load and symmetrical load.In filament wound composite, fiber subjects Main Load, epoxy resin gives full play to the intrinsic potential of fiber, not only play an important role under longitudinal compression, cross directional stretch and the effect of the load such as compression, shearing, also dominate other mechanical properties of resin, as interlaminar shear strength and modulus, compressive strength and buckling strength etc.The height of these performances obviously affect insulation layer internally, the ability to bear of external load.Nanometer Sb
2o
3with FR-10 with the use of time to epoxy resin, there is obvious flame retardant synergistic effect, fine to epoxy resin cured product flame retardant effect, they add the thermolysis that inhibit epoxy resin cured product, improve its flame retardant resistance.Because nanoparticle has quantum size effect, small-size effect, surface effects etc., therefore there is comparatively strong interaction between nanoparticle and epoxy resin, second-order transition temperature is raised, thus improve the thermotolerance of system.And with nanometer Sb
2o
3increasing of consumption, after epoxy resin cured product burning, carbon left reduces, and finds after deliberation, as nanometer Sb
2o
3when massfraction is 4-6%, with FR-10 with the use of best to the flame retardant effect of matrix material, and improve the mechanical properties such as the tensile strength of matrix material, flexural strength and shock strength simultaneously.The high-performance that compound resin epoxy resin of the present invention has itself, by being further improved with the acting in conjunction of alkali free glass fibre, silicon-dioxide, improve the over-all properties of the insulation layer that epoxy resin composite material is made, especially high temperature resistant, corrosion-resistant, radiation hardness, weather, flame resistant, the performance relevant with environment such as ageing-resistant, by composite interpolation nanometer Sb
2o
3with FR-10, improve the flame retardant resistance of epoxy resin composite material.Therefore by the insulation layer (left insulation layer and right insulation layer) made with above-mentioned matrix material in 220kV epoxy type insulated copper shell, greatly can improve the work-ing life of 220kV epoxy type insulated copper shell.
As preferably, the epoxy resin described in epoxy resin composite material is phosphorous epoxy resin, and phosphorus content is 2-4%.Along with the introducing of phosphoric, the flame retardant properties of matrix material significantly strengthens, and also can improve bending strength, resistance toheat etc.
As preferably, the alkali free glass fibre described in epoxy resin composite material is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm.Alkali-free glass fiber diameter is thinner in theory, and length is longer, and reinforced effects is better, but when reaching a certain stagnation point, reinforced effects does not increase counter subtracting.If glass diameter is too thin, is easily cut into fine-powder by threaded rod shear, thus loses the enhancement of glass.If glass diameter is too thick, just poor with the cementability of resin, reduce the mechanical property of product.Therefore, the length of alkali-free glass fiber and diameter control in above-mentioned scope, not only can be ensured the reinforced effects of alkali-free glass fiber, also can improve the consistency between fiber and resin by the present invention.
As preferably, silicon-dioxide described in epoxy resin composite material is the mixture comprising silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, and wherein silica dioxide granule I is of a size of 10-15 μm, silica dioxide granule II is of a size of 2-4 μm and silica dioxide granule III is of a size of 300-600nm.The present invention is by the granulated staged part system of three kinds of sizes, play good enhancement, when making stressed impact simultaneously, large-size particle can also be collided while mutually colliding between small-particle, repeatedly decay, thus play good damping of shocks effect, improve shock resistance and the crocking resistance of insulation layer.
Further preferably, in the mixture of silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, the content of described silica dioxide granule I accounts for the 10-15% of mixture total mass, the content of silica dioxide granule II accounts for the 65-85% of mixture total mass, and surplus is silica dioxide granule III.Silica dioxide granule I has large-size, its existence is to directly tackle relatively large extraneous stress impact, when being subject to extraneous directly impact or larger stress impact, it can by the elastic displacement of the large resistance of macrobead in epoxy resin-base and reset, cushion, thus play the effect once decayed, simultaneously because have larger particle size, the area that is obstructed is larger, thus can form enough decay by less elastic displacement, avoid destructive tearing occurs, certainly same have larger size because of it, addition during production and application needs suitably to control, excessive interpolation is avoided to cause the combination in resin firm not, and matrix material mixed performance and bulk strength can be affected.And silica dioxide granule III has less particle size, very easily occur when it uses to pile up or caking, and in one-piece construction skewness, thus affect overall performance and the quality of material.
Further preferably, described silica dioxide granule I or silica dioxide granule III have vesicular structure.When silica dioxide granule I has vesicular structure, its bore dia is 60-100nm, and specific surface area is 60-80m
2/ g.Elastomerics branch is infiltrated through in the porous that silica dioxide granule I is larger, forming the colleague of solid netted linked system enhancing mechanical property, can also under larger stress impact, vesicular structure is relied on to carry out self fragmentation, discharge excessive stress, cushioned by elastomeric recovery of elasticity simultaneously, the position of recovering crushed particles forms the particle of next stage, thus on the impact of mechanical property and not easily in the individual pieces that formation destructive force in system inside is stronger when reducing silica dioxide granule I fragmentation, thus realize the object of efficient stress decay.When silica dioxide granule III has vesicular structure, its bore dia is 2-5nm, and specific surface area is 200-300m
2/ g.The fine structure of silica dioxide granule III by itself and the break-in, decay etc. of its microporous overlay position counter stress, the faint stress that buffering exists in eliminating and using.
As preferably, the solidifying agent described in epoxy resin composite material is one or both in triethylene tetramine, double focusing cyanamide.
As preferably, the curing catalyst described in epoxy resin composite material is glyoxal ethyline.
As a further improvement on the present invention, described left encapsulating mouth and right encapsulating mouth are all set to "T"-shaped counterbore, and on each encapsulating mouth, be all movably installed with the "T"-shaped encapsulating lid can closing corresponding encapsulating mouth.
As a further improvement on the present invention, the wall thickness of each large copper pipe is identical with the wall thickness of each little copper pipe, and the wall thickness of each insulation layer is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulation layer.
As a further improvement on the present invention, described left terminals and right terminals all in " J " shape arrange and the two opening towards consistent, all be provided with grounding leg in each terminals, described grounding leg is inner to be connected with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in described grounding leg outer end.
As a further improvement on the present invention, the outer side of described epoxy insulator, left copper sheathing flange, right copper sheathing flange three flushes, each copper sheathing flange is all connected by bolt and epoxy insulator, and two end faces of described epoxy insulator are provided with sealing-ring with also sealing respectively between corresponding copper sheathing flange.
As a further improvement on the present invention, each little copper pipe is all arranged in syllogic, near one section of corresponding large copper pipe with all arrange in closing up away from one end of corresponding large copper pipe, the middle one section setting in cylinder.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
1, overall construction design rationally and compact in design, power cable junction and external environment completely cut off by copper shell, improve cable safety in utilization, the obtained epoxy insulator of epoxide resin material is adopted to coordinate closely with each housing, ensure that the sealing property of copper shell, its electrical insulation properties is stablized, ensure that the reliability of power cable work.
2, insulation layer (left insulation layer and right insulation layer) adopts the epoxy resin composite material of specific compatibility to make, matrix material with high performance phosphorous epoxy resin for matrix, by adding the material such as strongthener alkali-free glass fiber and silicon-dioxide, and composite nanometer Sb simultaneously
2o
3coordinate with FR-10, by the synergy of each component, increase substantially the over-all properties of epoxy insulation layer, insulation layer is made to have outstanding physics, chemical property, especially there are outstanding erosion resistance, temperature tolerance, ageing resistance, flame retardant resistance etc., there are higher intensity, rigidity etc. simultaneously, and then improve over-all properties and the work-ing life of 220kV epoxy type insulated copper shell.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1.
In figure, 10, left copper pipe; 11, first copper pipe; 111, left encapsulating mouth; 12, the first little copper pipe; 21, left copper sheathing flange; 22, right copper sheathing flange; 31, left terminals; 32, right terminals; 41, left insulation layer; 42, right insulation layer; 50, right copper pipe; 51, second largest copper pipe; 511, right encapsulating mouth; 52, the second little copper pipe; 60, epoxy insulator; 70, encapsulating lid; 80, grounding leg; 90, bolt; 100, sealing-ring.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
The present invention protects a kind of 220kV epoxy type insulated copper shell, is applicable to intermediate joint of electric cable, is particularly useful for 220kV single-core crosslinked polyethylene insulation metal sheath intermediate joint of electric cable.
Existing most of copper containment structure design is unreasonable, and its electric insulation effect is undesirable, reduces the stability of power cable work.Therefore, it is necessary for designing a kind of more rational 220kV epoxy type insulated copper shell.
Below in conjunction with the elaboration that Fig. 1 to Fig. 2 carries out specifically to technical scheme provided by the invention.
As shown in Figure 1 to Figure 2, this 220kV epoxy type insulated copper shell comprises:
Left copper pipe 10, be made up of the first copper pipe 11 be connected as a single entity and the first little copper pipe 12, the diameter of first copper pipe 11 is greater than the diameter of the first little copper pipe 12, first copper pipe 11 is sealed and installed with left copper sheathing flange 21 away from one end of the first little copper pipe 12, and first copper pipe 11 side is provided with the left terminals 31 arranged near the first little copper pipe 12 and the left encapsulating mouth 111 arranged near left copper sheathing flange 21;
Left insulation layer 41, in the circumferential lateral surface being sealed and coated on left copper pipe 10 and left encapsulating mouth 111 through left insulation layer 41;
Right copper pipe 50, be made up of the second largest copper pipe 51 be connected as a single entity and the second little copper pipe 52, the diameter of second largest copper pipe 51 is greater than the diameter of the second little copper pipe 52, second largest copper pipe 51 is sealed and installed with away from one end of the second little copper pipe 52 the right copper sheathing flange 22 be oppositely arranged with left copper sheathing flange 21, second largest copper pipe 51 side is provided with the right terminals 32 arranged near the second little copper pipe 52 and the right encapsulating mouth 511 arranged near right copper sheathing flange 22, and right terminals 32 are arranged with left terminals 31 homonymy;
Right insulation layer 42, in the circumferential lateral surface being sealed and coated on right copper pipe and right encapsulating mouth 511 through right insulation layer 42;
Epoxy insulator 60, is arranged ringwise and by epoxide resin material casting, epoxy insulator 60 is arranged between left copper sheathing flange 21 and right copper sheathing flange 22 and three is tightly connected.
In the present case, main three the part compositions of copper shell, be respectively left copper pipe 10, right copper pipe 50 and the epoxy insulator 60 for connecting left copper pipe 10, right copper pipe 50, in use, first left copper pipe 10 and right copper pipe 50 are each passed through two power cable ends to be connected, are carrying out cable connection and after insulating, left copper pipe 10 be connected with right copper pipe 50.
This 220kV epoxy type insulated copper shell in an initial condition, overall construction design rationally and compact in design, power cable junction and external environment completely cut off by copper shell, improve cable safety in utilization, the obtained epoxy insulator 60 of epoxide resin material is adopted to coordinate closely with each housing, ensure that the sealing property of copper shell, its electrical insulation properties is stablized, ensure that the reliability of power cable work.
It should be added that: the epoxy insulator 60 in this case is by epoxide resin material casting.Epoxy resin is the organic compound containing two or more epoxide groups in general reference molecule, and except indivedual, their relative molecular mass is not high.The molecular structure of epoxy resin be with in molecular chain containing active epoxide group for its feature, epoxide group can be positioned at the end of molecular chain, centre or structure circlewise.Due in molecular structure containing active epoxide group, make they can with polytype solidifying agent generation crosslinking reaction and formed and insoluble there is the cancellated superpolymer of three-dimensional.Macromolecular compound containing epoxide group in all molecular structures is referred to as epoxy resin.
Epoxide resin material after solidification has good physics, chemical property, and it has excellent bonding strength to the surface of metal and non-metallic material, and dielectric properties are good, set shrinking percentage is little, product size good stability, and hardness is high, snappiness is better, to alkali and most of solvent-stable.Such epoxy insulator 60 vibrational power flow, makes epoxy insulator 60 be connected closely with each housing, greatly improves the electrical insulation properties of copper shell, according to actual needs, epoxide resin material can be replaced with insulating material.
This copper shell is arranged on single-core cable joint, and its encapsulating mouth is used for internal space insulating material (as waterproof insulation glue) being poured into copper shell, with attached cable intermediate head and copper shell.And terminals are for connecting grounding wire and grounding wire being connected nigh ground connector, ensure stability and the reliability of work.
In invention; this 220kV epoxy type insulated copper shell is particularly useful for 220kV single-core crosslinked polyethylene insulation metal sheath intermediate joint of electric cable; have and to connect high-tension cable metal sheath or the effect of segmentation, this copper shell also has intermediate head is played to electric insulation, to be connected and the effect of mechanical protection to outer gland sealing, over the ground.
When this 220kV epoxy type insulated copper shell is installed, can seal gum be poured into a mould, cable trench can be directly installed on interior or direct buried, glass reinforced plastic water-proof case also can be coordinated to use together, more preferably result of use can be reached.
Concrete, for making encapsulating work convenient, efficient, preferred left encapsulating mouth 111 and right encapsulating mouth 511 are all set to "T"-shaped counterbore, and on each encapsulating mouth, being all movably installed with the "T"-shaped encapsulating lid 70 can closing corresponding encapsulating mouth, encapsulating lid 70 ensure that stopping property also plays the effects such as dust-tight.
Preferably, the wall thickness of each large copper pipe is identical with the wall thickness of each little copper pipe, and the wall thickness of each insulation layer is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulation layer.
There is identical shield effectiveness in the space that the structure design of identical wall thickness makes each copper pipe be formed, ensure that electrical insulation properties, favourable to the shielding at whole cable splice position; The vibrational power flow that outer field insulation layer is thicker then improves shield effectiveness further, ensure that cable working stability.
Preferably, left terminals 31 and right terminals 32 all arrange in " J " shape and the two opening towards consistent, be all provided with grounding leg 80 in each terminals, grounding leg 80 the inner and corresponding large copper pipe are connected, and it is outside that corresponding terminals are exposed in grounding leg 80 outer end.
Grounding leg 80 while connect with corresponding large copper pipe, the other side, for connecting grounding wire, makes cable reliable operation; Further, be arranged so that buried and connection work is convenient towards consistent terminals.
Preferably, the outer side of epoxy insulator 60, left copper sheathing flange 21, right copper sheathing flange 22 three flushes, each copper sheathing flange is all connected by bolt 90 and epoxy insulator 60, and two end faces of epoxy insulator 60 are provided with sealing-ring 100 with also sealing respectively between corresponding copper sheathing flange.
Such vibrational power flow, improves the effect that is tightly connected between two housings further, ensure that the electrical insulation properties of copper shell, and all parts dismounting also facilitates.
Preferably, for making copper pipe shield effectiveness better, each little copper pipe being set and all arranging in syllogic, near one section of corresponding large copper pipe with all arrange in closing up away from one end of corresponding large copper pipe, the middle one section setting in cylinder.
As further improvement, in preferred this case, insulation layer and left insulation layer 41 and right insulation layer 42 are made by epoxy resin composite material, insulation layer are connected more reliable with copper pipe.
Below by specific embodiment, left insulation layer 41 and right insulation layer 42 are further explained.
Embodiment 1
Left insulation layer described in the present embodiment and right insulation layer are made by epoxy resin composite material, and epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 40wt%;
Alkali free glass fibre: 6wt%;
Nanometer Sb
2o
3: 5wt%;
Decabromodiphynly oxide (FR-10): 1.5wt%;
Solidifying agent: 3wt%;
Solidifying agent promotor: 3wt%;
Surplus is silicon-dioxide.
Wherein, described epoxy resin is phosphorous epoxy resin, and phosphorus content is 3%; Described alkali free glass fibre is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm; Described silicon-dioxide is the mixture (silica dioxide granule I 12%, the silica dioxide granule II 70% that comprise silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, surplus is silica dioxide granule III), silica dioxide granule I is of a size of 12 μm, silica dioxide granule II is of a size of 3 μm and silica dioxide granule III is of a size of 400nm; Described silica dioxide granule I has vesicular structure, and its bore dia is 80nm, and specific surface area is 70m
2/ g; Described solidifying agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing catalyst is glyoxal ethyline.
First epoxy resin and solidifying agent, silicon-dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing catalyst after stirring 2h, gluing after continuation stirring 0.5h, with glue dipping alkali free glass fibre 3-6min.The alkali free glass fibre coating glue is placed in 95 DEG C of baking oven forced air drying 8min, obtain prepreg, by superimposed for prepreg (general 8), then copper pipe circumferential lateral surface is placed in, put into vacuum press compacting, by time variable control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes compound resin be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 2
Left insulation layer described in the present embodiment and right insulation layer are made by epoxy resin composite material, and epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 35wt%;
Alkali free glass fibre: 8wt%;
Nanometer Sb
2o
3: 5wt%;
Decabromodiphynly oxide (FR-10): 1.2wt%;
Solidifying agent: 4wt%;
Solidifying agent promotor: 2wt%;
Surplus is silicon-dioxide.
Wherein, described epoxy resin is phosphorous epoxy resin, and phosphorus content is 2.5%; Described alkali free glass fibre is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm; Described silicon-dioxide is the mixture (silica dioxide granule I 14%, the silica dioxide granule II 72% that comprise silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, surplus is silica dioxide granule III), silica dioxide granule I is of a size of 14 μm, silica dioxide granule II is of a size of 3 μm and silica dioxide granule III is of a size of 500nm; Described silica dioxide granule III has vesicular structure, and its bore dia is 4nm, and specific surface area is 240m
2/ g; Described solidifying agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing catalyst is glyoxal ethyline.
First epoxy resin and solidifying agent, silicon-dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing catalyst after stirring 2h, gluing after continuation stirring 0.5h, with glue dipping alkali free glass fibre 3-6min.The alkali free glass fibre coating glue is placed in 95 DEG C of baking oven forced air drying 8min, obtain prepreg, by superimposed for prepreg (general 8), then copper pipe circumferential lateral surface is placed in, put into vacuum press compacting, by time variable control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes compound resin be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 3
Left insulation layer described in the present embodiment and right insulation layer are made by epoxy resin composite material, and epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 50wt%;
Alkali free glass fibre: 6wt%;
Nanometer Sb
2o
3: 4wt%;
Decabromodiphynly oxide (FR-10): 1wt%;
Solidifying agent: 2wt%;
Solidifying agent promotor: 4wt%;
Surplus is silicon-dioxide.
Wherein, described epoxy resin is phosphorous epoxy resin, and phosphorus content is 4%; Described alkali free glass fibre is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm; Described silicon-dioxide is the mixture (silica dioxide granule I 15%, the silica dioxide granule II 65% that comprise silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, surplus is silica dioxide granule III), silica dioxide granule I is of a size of 15 μm, silica dioxide granule II is of a size of 2 μm and silica dioxide granule III is of a size of 600nm; Described silica dioxide granule I has vesicular structure, and its bore dia is 60nm, and specific surface area is 80m
2/ g; Described solidifying agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing catalyst is glyoxal ethyline.
First epoxy resin and solidifying agent, silicon-dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing catalyst after stirring 2h, gluing after continuation stirring 0.5h, with glue dipping alkali free glass fibre 3-6min.The alkali free glass fibre coating glue is placed in 95 DEG C of baking oven forced air drying 8min, obtain prepreg, by superimposed for prepreg (general 8), then copper pipe circumferential lateral surface is placed in, put into vacuum press compacting, by time variable control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes compound resin be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 4
Left insulation layer described in the present embodiment and right insulation layer are made by epoxy resin composite material, and epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 30wt%;
Alkali free glass fibre: 10wt%;
Nanometer Sb
2o
3: 6wt%;
Decabromodiphynly oxide (FR-10): 2wt%;
Solidifying agent: 5wt%;
Solidifying agent promotor: 2wt%;
Surplus is silicon-dioxide.
Wherein, described epoxy resin is phosphorous epoxy resin, and phosphorus content is 2%; Described alkali free glass fibre is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm; Described silicon-dioxide is the mixture (silica dioxide granule I 10%, the silica dioxide granule II 80% that comprise silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, surplus is silica dioxide granule III), silica dioxide granule I is of a size of 10 μm, silica dioxide granule II is of a size of 4 μm and silica dioxide granule III is of a size of 300nm; Described silica dioxide granule III has vesicular structure, and its bore dia is 5nm, and specific surface area is 300m
2/ g; Described solidifying agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing catalyst is glyoxal ethyline.
First epoxy resin and solidifying agent, silicon-dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing catalyst after stirring 2h, gluing after continuation stirring 0.5h, with glue dipping alkali free glass fibre 3-6min.The alkali free glass fibre coating glue is placed in 95 DEG C of baking oven forced air drying 8min, obtain prepreg, by superimposed for prepreg (general 8), then copper pipe circumferential lateral surface is placed in, put into vacuum press compacting, by time variable control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes compound resin be sealed and coated on the circumferential lateral surface of copper pipe.
Comparative example 1
Only be that not containing silicon-dioxide, other are in the same manner as in Example 1, are not repeated only containing alkali free glass fibre in the epoxy resin composite material of this comparative example insulation layer herein with the difference of embodiment 1.
Comparative example 2
Only be that not containing other silicon-dioxide and alkali free glass fibre, other are in the same manner as in Example 1, are not repeated only containing single silica dioxide granule I in the epoxy resin composite material of this comparative example insulation layer herein with the difference of embodiment 1.
Comparative example 3
Only be that not containing other silicon-dioxide and alkali free glass fibre, other are in the same manner as in Example 1, are not repeated only containing single silica dioxide granule II in the epoxy resin composite material of this comparative example insulation layer herein with the difference of embodiment 1.
Comparative example 4
Only be that not containing other silicon-dioxide and alkali free glass fibre, other are in the same manner as in Example 1, are not repeated only containing single silica dioxide granule III in the epoxy resin composite material of this comparative example insulation layer herein with the difference of embodiment 1.
Comparative example 5
The fire retardant be only in the epoxy resin composite material of this comparative example insulation layer with the difference of embodiment 1 is common fire retardant, as Al (OH)
3or Mg (OH)
2.
Insulation layer in 220kV epoxy type insulated copper shell in embodiment 1-4 and comparative example 1-5 is carried out performance test and contrast, and the result of test is as shown in table 1.
Insulation layer the performance test results in table 1: embodiment 1-4 and comparative example 1-5 in 220kV epoxy type insulated copper shell
Wherein LOI is the insulation layer limiting oxygen index(LOI) in 220kV epoxy type insulated copper shell.
In sum, insulation layer in 220kV epoxy type insulated copper shell selects the matrix material of specific compatibility to make, there is outstanding physics, chemical property, especially there are higher erosion resistance, temperature tolerance, ageing resistance, flame retardant resistance etc., there is higher intensity, impelling strength simultaneously, and then improve its work-ing life, and cost is low, asepsis environment-protecting.Above-mentioned insulation layer is used for, in 220kV epoxy type insulated copper shell, greatly improve the electrical insulation properties of copper shell, flame retardant resistance, also greatly can improves the over-all properties in 220kV epoxy type insulated copper shell, improve its work-ing life.
In addition, the technical scope mid point value non-limit part that this place embodiment is protected application claims and in embodiment technical scheme to the new technical scheme that the equal replacement of single or multiple technical characteristic is formed, equally all in the scope of protection of present invention; Simultaneously in all embodiments enumerated or do not enumerate of the present invention program, parameters in the same embodiment only represents an example (i.e. a kind of feasible scheme) of its technical scheme, and between parameters, there is not strict cooperation and qualified relation, wherein each parameter can be replaced, except special declaration mutually when stating ask without prejudice to axiom and the present invention.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a 220kV epoxy type insulated copper shell, is characterized in that, comprising:
Left copper pipe, be made up of the first copper pipe be connected as a single entity and the first little copper pipe, the diameter of described first copper pipe is greater than the diameter of the first little copper pipe, described first copper pipe is sealed and installed with left copper sheathing flange away from one end of the first little copper pipe, and described first copper pipe side is provided with the left terminals arranged near the first little copper pipe and the left encapsulating mouth arranged near left copper sheathing flange;
Left insulation layer, in the circumferential lateral surface being sealed and coated on left copper pipe and described left encapsulating mouth through left insulation layer;
Right copper pipe, be made up of the second largest copper pipe be connected as a single entity and the second little copper pipe, the diameter of described second largest copper pipe is greater than the diameter of the second little copper pipe, described second largest copper pipe is sealed and installed with away from one end of the second little copper pipe the right copper sheathing flange be oppositely arranged with left copper sheathing flange, described second largest copper pipe side is provided with the right terminals arranged near the second little copper pipe and the right encapsulating mouth arranged near right copper sheathing flange, and described right terminals and left terminals homonymy are arranged;
Right insulation layer, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulation layer;
Epoxy insulator, is arranged ringwise and by epoxide resin material casting, described epoxy insulator is arranged between left copper sheathing flange and right copper sheathing flange and three is tightly connected;
Described left insulation layer and right insulation layer are made by epoxy resin composite material.
2. 220kV epoxy type insulated copper shell according to claim 1, it is characterized in that, described epoxy resin composite material comprises following component and weight percent:
Epoxy resin: 30-50wt%;
Alkali free glass fibre: 5-10wt%;
Nanometer Sb
2o
3: 4-6wt%;
Decabromodiphynly oxide (FR-10): 1-2wt%;
Solidifying agent: 1-5wt%;
Solidifying agent promotor: 2-5wt%;
Surplus is silicon-dioxide.
3. 220kV epoxy type insulated copper shell according to claim 2, it is characterized in that, the epoxy resin described in epoxy resin composite material is phosphorous epoxy resin, and phosphorus content is 2-4%.
4. 220kV epoxy type insulated copper shell according to claim 2, it is characterized in that, the alkali free glass fibre described in epoxy resin composite material is short glass fiber, and the length of short glass fiber is 2.0-5.0mm, and diameter is 8-12 μm.
5. 220kV epoxy type insulated copper shell according to claim 2, it is characterized in that, silicon-dioxide described in epoxy resin composite material is the mixture comprising silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, and wherein silica dioxide granule I is of a size of 10-15 μm, silica dioxide granule II is of a size of 2-4 μm and silica dioxide granule III is of a size of 300-600nm.
6. 220kV epoxy type insulated copper shell according to claim 5, it is characterized in that, in the mixture of silica dioxide granule I, silica dioxide granule II and silica dioxide granule III, the content of described silica dioxide granule I accounts for the 10-15% of mixture total mass, the content of silica dioxide granule II accounts for the 65-85% of mixture total mass, and surplus is silica dioxide granule III.
7. the 220kV epoxy type insulated copper shell according to claim 5 or 6, it is characterized in that, described silica dioxide granule I or silica dioxide granule III have vesicular structure, when silica dioxide granule I has vesicular structure, its bore dia is 60-100nm, and specific surface area is 60-80m
2/ g; When silica dioxide granule III has vesicular structure, its bore dia is 2-5nm, and specific surface area is 200-300m
2/ g.
8. 220kV epoxy type insulated copper shell according to claim 1, is characterized in that, described left encapsulating mouth and right encapsulating mouth are all set to "T"-shaped counterbore, and on each encapsulating mouth, be all movably installed with the "T"-shaped encapsulating lid can closing corresponding encapsulating mouth; The wall thickness of each large copper pipe is identical with the wall thickness of each little copper pipe, and the wall thickness of each insulation layer is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulation layer.
9. 220kV epoxy type insulated copper shell according to claim 1, it is characterized in that, described left terminals and right terminals all in " J " shape arrange and the two opening towards consistent, all grounding leg is installed in each terminals, described grounding leg is inner to be connected with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in described grounding leg outer end; Each little copper pipe is all arranged in syllogic, near one section of corresponding large copper pipe with all arrange in closing up away from one end of corresponding large copper pipe, the middle one section setting in cylinder.
10. 220kV epoxy type insulated copper shell according to claim 1, it is characterized in that, the outer side of described epoxy insulator, left copper sheathing flange, right copper sheathing flange three flushes, each copper sheathing flange is all connected by bolt and epoxy insulator, and two end faces of described epoxy insulator are provided with sealing-ring with also sealing respectively between corresponding copper sheathing flange.
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| CN201510683375.7A CN105219024A (en) | 2015-10-20 | 2015-10-20 | 220kV epoxy type insulated copper shell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510683375.7A CN105219024A (en) | 2015-10-20 | 2015-10-20 | 220kV epoxy type insulated copper shell |
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| CN107580405A (en) * | 2017-10-13 | 2018-01-12 | 中国科学技术大学 | The high-voltage electrode flange transferred for high vacuum chamber and hyperbar room |
| CN110609270A (en) * | 2019-10-22 | 2019-12-24 | 广州四为电子科技有限公司 | Automobile radar |
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Address after: 315137 Zhejiang province Ningbo City Yunlong Industrial Zone Yinzhou District Yunlong Town Cloud Hui Lu No. 211 Applicant after: Ningbo East power Polytron Technologies Inc Address before: 315137 Zhejiang province Ningbo City Yunlong Industrial Zone Yinzhou District Yunlong Town Cloud Hui Lu No. 211 Applicant before: NINGBO JOHOST CABLE ACCESSORIES CO., LTD. |
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Application publication date: 20160106 |