CN105226590A - 110kV flame retardant epoxy type insulated copper shell - Google Patents
110kV flame retardant epoxy type insulated copper shell Download PDFInfo
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- CN105226590A CN105226590A CN201510683168.1A CN201510683168A CN105226590A CN 105226590 A CN105226590 A CN 105226590A CN 201510683168 A CN201510683168 A CN 201510683168A CN 105226590 A CN105226590 A CN 105226590A
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Abstract
The invention provides a kind of 110kV flame retardant epoxy type insulated copper shell, belong to technical field of electricity.It comprises: left copper pipe, and be made up of first copper pipe and the first little copper pipe, first copper pipe is provided with left copper sheathing flange, and first copper pipe one middle side part is provided with left terminals; Right copper pipe, be made up of second largest copper pipe and the second little copper pipe, second largest copper pipe is provided with right copper sheathing flange, and second largest copper pipe one middle side part is provided with the right terminals arranged with left terminals homonymy; Flame retardant epoxy insulating part, arranges ringwise and is made up of fire retardant plastic material, and the sealing of flame retardant epoxy insulating part is arranged between left copper sheathing flange and right copper sheathing flange; All be provided with in the dull and stereotyped grounding leg arranged in each terminals, grounding leg the inner intersects vertically with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in grounding leg outer end; Left insulating barrier and right insulating barrier are made by epoxy resin composite material.This 110kV flame retardant epoxy type insulated copper shelling machine is reasonable, electrical insulation properties stable, combination property is high.
Description
Technical field
The invention belongs to technical field of electricity, relate to a kind of 110kV flame retardant epoxy type insulated copper shell, particularly a kind of 110kV flame retardant 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 shell mechanism design is unreasonable, and material is common and single, and its electric insulation effect is undesirable, reduces stability and the useful life of power cable work.
In sum, be solve the deficiency on existing copper shell mechanism, need design a kind of reasonable in design, electrical insulation properties is stablized, the 110kV flame retardant 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 110kV flame retardant 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 110kV flame retardant 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, the left encapsulating mouth that described first copper pipe one middle side part is provided with left terminals and arranges near left copper sheathing flange;
Left insulating barrier, in the circumferential lateral surface being sealed and coated on left copper pipe and described left encapsulating mouth through left insulating barrier;
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, the right encapsulating mouth that described second largest copper pipe one middle side part is provided with right terminals and arranges near right copper sheathing flange, described right terminals and left terminals homonymy are arranged;
Right insulating barrier, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulating barrier;
Flame retardant epoxy insulating part, arranges ringwise and is made up of fire retardant plastic material, and described flame retardant epoxy insulating part is arranged between left copper sheathing flange and right copper sheathing flange and three is tightly connected;
All be provided with in the dull and stereotyped grounding leg arranged in each terminals, described grounding leg the inner intersects vertically with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in described grounding leg outer end;
Described left insulating barrier and right insulating barrier are made by epoxy resin composite material.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, described epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 30-50wt%;
Alkali-free glass fibre: 5-10wt%;
Nanometer Sb
2o
3: 4-6wt%;
Deca-BDE (FR-10): 1-2wt%;
Curing agent: 1-5wt%;
Curing agent promoter: 2-5wt%;
Surplus is silicon dioxide.
In 110kV flame retardant epoxy type insulated copper shell of the present invention, left insulating barrier and right insulating barrier are made by epoxy resin composite material, and described composite material epoxy resin is matrix, with the addition of reinforcing material alkali-free glass fibre, nanometer Sb simultaneously
2o
3, FR-10, silicon dioxide, epoxy resin-base not only plays parcel reinforcing material 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 composite 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 insulating barrier internally, the ability to bear of external applied 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 thermal decomposition that inhibit epoxy resin cured product, improve its anti-flammability.Because nano particle has quantum size effect, small-size effect, skin effect etc., therefore there is comparatively strong interaction between nano particle and epoxy resin, vitrification point is raised, thus improve the thermal endurance 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 mass fraction is 4-6%, with FR-10 with the use of best to the flame retardant effect of composite material, and improve the mechanical properties such as the hot strength of composite material, bending strength and impact 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 combination property of the insulating barrier 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 anti-flammability of epoxy resin composite material.Therefore by the insulating barrier (left insulating barrier and right insulating barrier) made with above-mentioned composite material in 110kV flame retardant epoxy type insulated copper shell, greatly can improve the useful life of 110kV flame retardant 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 P elements, the fire resistance of composite material significantly strengthens, and also can improve bending strength, heat resistance 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, strengthens effect better, but when reaching a certain critical point, strengthens effect and do not increase counter subtracting.If glass diameter is too thin, is easily cut into fine-powder by threaded rod shear, thus loses the humidification 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 enhancing effect of alkali-free glass fiber, also can improve the compatibility 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 humidification, when making stressed impact simultaneously, large-size particle can also be collided while mutually colliding between granule, repeatedly decay, thus play good damping of shocks effect, improve shock resistance and the crocking resistance of insulating barrier.
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 gross mass, the content of silica dioxide granule II accounts for the 65-85% of mixture gross 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 bulky grain 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 composite 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 overall structure skewness, thus affect overall performance and the quality of material.
Further preferably, described silica dioxide granule I or silica dioxide granule III have loose structure.When silica dioxide granule I has loose structure, its bore dia is 60-100nm, and specific area is 60-80m
2/ g.Elastomer branch is infiltrated through in the porous that silica dioxide granule I is larger, forming the colleague of solid netted linked system enhancing mechanical performance, can also under larger stress impact, loose structure is relied on to carry out self fragmentation, discharge excessive stress, recover to cushion by elastomeric elasticity simultaneously, the position of recovering crushed particles forms the particle of next stage, thus on the impact of mechanical performance and not easily in the individual pieces that formation destructive power 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 loose structure, its bore dia is 2-5nm, and specific 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 curing agent described in epoxy resin composite material is one or both in triethylene tetramine, double focusing cyanamide.
As preferably, the curing accelerator described in epoxy resin composite material is glyoxal ethyline.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, one end that described grounding leg exposes corresponding terminals offers connecting hole.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, each little copper pipe is all arranged in syllogic, and one section near corresponding large copper pipe and one section away from corresponding large copper pipe is all arranged in closing in, and middle one section is arranged in cylinder.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, described left encapsulating mouth and right encapsulating mouth are all set to square through hole, and on each encapsulating mouth, be all movably installed with the encapsulating lid can closing corresponding encapsulating mouth.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, 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 insulating barrier is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulating barrier.
In above-mentioned 110kV flame retardant epoxy type insulated copper shell, the lateral surface of described flame retardant epoxy insulating part, left copper sheathing flange, right copper sheathing flange three flushes, each copper sheathing flange is all connected by bolt and flame retardant epoxy insulating part, and two end faces of described flame retardant epoxy insulating part are provided with sealing ring with also sealing respectively between corresponding copper sheathing flange.
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 flame retardant epoxy insulating part of fire retardant plastic 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, flame retardant epoxy insulating part is obtained by fire retardant plastic material; fire proofing be can suppress or retardation burning and oneself and be not easy burn material; fire-retardant protection effect can also be further increased under the prerequisite that ensure that insulation property; make flame retardant epoxy insulating part be connected closely with each housing, greatly improve the electrical insulation properties of copper shell.
3, grounding leg reasonable in design, adopts flat grounding leg, and it is more accurate to dock with the external world, fixing more reliable; Grounding leg while connect with corresponding large copper pipe, another side, for connecting earth connection, makes cable reliable operation.
4, insulating barrier (left insulating barrier and right insulating barrier) adopts the epoxy resin composite material of specific compatibility to make, composite material with high performance phosphorous epoxy resin for matrix, by adding the material such as reinforcing material 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 combination property of epoxy insulation layer, insulating barrier is made to have outstanding physics, chemical property, especially there are outstanding corrosion resistance, temperature tolerance, resistance to ag(e)ing, anti-flammability etc., there are higher intensity, rigidity etc. simultaneously, and then improve combination property and the useful life of 110kV flame retardant 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.
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 insulating barrier; 42, right insulating barrier; 50, right copper pipe; 51, second largest copper pipe; 511, right encapsulating mouth; 52, the second little copper pipe; 60, flame retardant epoxy insulating part; 80, grounding leg; 81, connecting hole; 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 110kV flame retardant epoxy type insulated copper shell, is applicable to intermediate joint of electric cable, is particularly useful for 110kV single-core crosslinked polyethylene insulation metal sheath intermediate joint of electric cable.
Existing most of copper shell mechanism 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 110kV flame retardant epoxy type insulated copper shell.
Below in conjunction with the elaboration that Fig. 1 carries out specifically to technical scheme provided by the invention.
As shown in Figure 1, this 110kV flame retardant 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, the left encapsulating mouth 111 that first copper pipe 11 1 middle side part is provided with left terminals 31 and arranges near left copper sheathing flange 21;
Left insulating barrier 41, in the circumferential lateral surface being sealed and coated on left copper pipe 10 and left encapsulating mouth 111 through left insulating barrier 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, the right encapsulating mouth 511 that second largest copper pipe 51 1 middle side part is provided with right terminals 32 and arranges near right copper sheathing flange 22, right terminals 32 are arranged with left terminals 31 homonymy;
Right insulating barrier 42, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth 511 through right insulating barrier 42;
Flame retardant epoxy insulating part 60, arranges ringwise and is made up of fire retardant plastic material, and flame retardant epoxy insulating part 60 is arranged between left copper sheathing flange 21 and right copper sheathing flange 22 and three is tightly connected;
All be provided with in the dull and stereotyped grounding leg 80 arranged in each terminals, grounding leg 80 the inner intersects vertically with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in grounding leg 80 outer end.
In the present case, main three the part compositions of copper shell, be respectively left copper pipe 10, right copper pipe 50 and the flame retardant epoxy insulating part 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 110kV flame retardant 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 flame retardant epoxy insulating part 60 of fire retardant plastic 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 flame retardant epoxy insulating part 60 in this case is obtained by fire retardant plastic material.Fire proofing be can suppress or retardation burning and oneself and be not easy burn material; fire-retardant protection effect can also be further increased under the prerequisite that ensure that insulation property; flame retardant epoxy insulating part 60 is made to be connected closely with each housing; greatly improve the electrical insulation properties of copper shell; according to actual needs, fire retardant plastic material can be replaced with insulating material.
This copper shell is arranged on single-core cable joint, and its encapsulating mouth is used for inner space insulating material (as waterproof insulation glue) being poured into copper shell, with attached cable transition joint and copper shell.And terminals are for connecting earth connection and earth connection being connected nigh earth electrode, ensure stability and the reliability of work.
In invention; this 110kV flame retardant epoxy type insulated copper shell is particularly useful for 110kV 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 transition joint is played to electric insulation, to be connected and the effect of mechanical protection to external seal, over the ground.
When this 110kV flame retardant epoxy type insulated copper shell is installed, can fluid sealant be poured into a mould, cable trough can be directly installed on interior or direct buried, fiberglass waterproof case also can be coordinated to use together, more preferably result of use can be reached.
In addition, grounding leg 80 reasonable in design in this case, adopts flat grounding leg 80, and it is more accurate to dock with the external world, fixing more reliable; Grounding leg 80 while connect with corresponding large copper pipe, another side, for connecting earth connection, makes cable reliable operation; Further, the opening of preferred left terminals 31 and right terminals 32, towards consistent, is arranged so that buried towards consistent terminals and connection work is convenient.
Convenient and reliable for making grounding leg 80 be connected with earth connection, one end that preferred grounding leg 80 exposes corresponding terminals offers connecting hole 81, ensure that the reliability of work.
Preferably, for making copper pipe shield effectiveness better, arranging each little copper pipe and all arranging in syllogic, one section near corresponding large copper pipe and one section away from corresponding large copper pipe is all arranged in closing in, and middle one section is arranged in cylinder.
For making encapsulating work convenient, efficient, preferred left encapsulating mouth 111 and right encapsulating mouth 511 are all set to square through hole, and on each encapsulating mouth, be all movably installed with the encapsulating lid can closing corresponding encapsulating mouth.Encapsulating lid ensure that sealing also plays the effects such as dust-tight.
As 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 insulating barrier is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulating barrier.There is identical shield effectiveness in the space that the structural design of identical wall thickness makes each copper pipe be formed, ensure that electrical insulation properties, favourable to the shielding at whole cable joint position; The vibrational power flow that outer field insulating barrier is thicker then improves shield effectiveness further, ensure that cable working stability.
Preferably, the lateral surface of flame retardant epoxy insulating part 60, left copper sheathing flange 21, right copper sheathing flange 22 three flushes, each copper sheathing flange is all connected by bolt 90 and flame retardant epoxy insulating part 60, and two end faces of flame retardant epoxy insulating part 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.
Wherein, left insulating barrier 41 and right insulating barrier 42 are made by epoxy resin composite material.
Below by specific embodiment, left insulating barrier 41 and right insulating barrier 42 are further explained.
Embodiment 1
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 40wt%;
Alkali-free glass fibre: 6wt%;
Nanometer Sb
2o
3: 5wt%;
Deca-BDE (FR-10): 1.5wt%;
Curing agent: 3wt%;
Curing agent promoter: 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 loose structure, and its bore dia is 80nm, and specific area is 70m
2/ g; Described curing agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing accelerator is glyoxal ethyline.
First epoxy resin and curing agent, silicon dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing accelerator 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 program control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes insulating barrier be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 2
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 35wt%;
Alkali-free glass fibre: 8wt%;
Nanometer Sb
2o
3: 5wt%;
Deca-BDE (FR-10): 1.2wt%;
Curing agent: 4wt%;
Curing agent promoter: 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 loose structure, and its bore dia is 4nm, and specific area is 240m
2/ g; Described curing agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing accelerator is glyoxal ethyline.
First epoxy resin and curing agent, silicon dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing accelerator 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 program control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes insulating barrier be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 3
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 50wt%;
Alkali-free glass fibre: 6wt%;
Nanometer Sb
2o
3: 4wt%;
Deca-BDE (FR-10): 1wt%;
Curing agent: 2wt%;
Curing agent promoter: 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 loose structure, and its bore dia is 60nm, and specific area is 80m
2/ g; Described curing agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing accelerator is glyoxal ethyline.
First epoxy resin and curing agent, silicon dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing accelerator 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 program control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes insulating barrier be sealed and coated on the circumferential lateral surface of copper pipe.
Embodiment 4
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 30wt%;
Alkali-free glass fibre: 10wt%;
Nanometer Sb
2o
3: 6wt%;
Deca-BDE (FR-10): 2wt%;
Curing agent: 5wt%;
Curing agent promoter: 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 loose structure, and its bore dia is 5nm, and specific area is 300m
2/ g; Described curing agent is one or both in triethylene tetramine, double focusing cyanamide; Described curing accelerator is glyoxal ethyline.
First epoxy resin and curing agent, silicon dioxide are added in reactor, after stirring 1h, add nanometer Sb
2o
3and FR-10, then add curing accelerator 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 program control, temperature programming, program high pressure and vacuum state must press down unification and fixing time, resin is solidified completely, makes insulating barrier 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 insulating barrier 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 insulating barrier 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 insulating barrier 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 insulating barrier 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 insulating barrier with the difference of embodiment 1 is common fire retardant, as Al (OH)
3or Mg (OH)
2.
Insulating barrier in 110kV flame retardant 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.
Insulating barrier the performance test results in table 1: embodiment 1-4 and comparative example 1-5 in 110kV flame retardant epoxy type insulated copper shell
Wherein LOI is the insulating barrier limited oxygen index in 110kV flame retardant epoxy type insulated copper shell.
In sum, insulating barrier in 110kV flame retardant epoxy type insulated copper shell selects the composite material of specific compatibility to make, there is outstanding physics, chemical property, especially there are higher corrosion resistance, temperature tolerance, resistance to ag(e)ing, anti-flammability etc., there is higher intensity, impact toughness simultaneously, and then improve its useful life, and cost is low, asepsis environment-protecting.Above-mentioned insulating barrier is used for, in 110kV flame retardant epoxy type insulated copper shell, greatly improve the electrical insulation properties of copper shell, anti-flammability, also greatly can improves the combination property in 110kV flame retardant epoxy type insulated copper shell, improve its useful life.
In addition, the technical scope midrange 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.
As further improvement, in preferred this case, each insulating barrier all adopts rotational molding technique to make, easy to process, insulating barrier is connected more reliable with copper pipe.
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 110kV flame retardant 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, the left encapsulating mouth that described first copper pipe one middle side part is provided with left terminals and arranges near left copper sheathing flange;
Left insulating barrier, in the circumferential lateral surface being sealed and coated on left copper pipe and described left encapsulating mouth through left insulating barrier;
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, the right encapsulating mouth that described second largest copper pipe one middle side part is provided with right terminals and arranges near right copper sheathing flange, described right terminals and left terminals homonymy are arranged;
Right insulating barrier, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulating barrier;
Flame retardant epoxy insulating part, arranges ringwise and is made up of fire retardant plastic material, and described flame retardant epoxy insulating part is arranged between left copper sheathing flange and right copper sheathing flange and three is tightly connected;
All be provided with in the dull and stereotyped grounding leg arranged in each terminals, described grounding leg the inner intersects vertically with corresponding large copper pipe, and it is outside that corresponding terminals are exposed in described grounding leg outer end;
Described left insulating barrier and right insulating barrier are made by epoxy resin composite material.
2. 110kV flame retardant epoxy type insulated copper shell according to claim 1, it is characterized in that, described epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin: 30-50wt%;
Alkali-free glass fibre: 5-10wt%;
Nanometer Sb
2o
3: 4-6wt%;
Deca-BDE (FR-10): 1-2wt%;
Curing agent: 1-5wt%;
Curing agent promoter: 2-5wt%;
Surplus is silicon dioxide.
3. 110kV flame retardant 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. 110kV flame retardant 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. 110kV flame retardant 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. 110kV flame retardant 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 gross mass, the content of silica dioxide granule II accounts for the 65-85% of mixture gross mass, and surplus is silica dioxide granule III.
7. the 110kV flame retardant 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 loose structure; When silica dioxide granule I has loose structure, its bore dia is 60-100nm, and specific area is 60-80m
2/ g; When silica dioxide granule III has loose structure, its bore dia is 2-5nm, and specific area is 200-300m
2/ g.
8. 110kV flame retardant epoxy type insulated copper shell according to claim 1, it is characterized in that, one end that described grounding leg exposes corresponding terminals offers connecting hole; Each little copper pipe is all arranged in syllogic, and one section near corresponding large copper pipe and one section away from corresponding large copper pipe is all arranged in closing in, and middle one section is arranged in cylinder.
9. 110kV flame retardant epoxy type insulated copper shell according to claim 1, it is characterized in that, described left encapsulating mouth and right encapsulating mouth are all set to square through hole, and on each encapsulating mouth, be all movably installed with the 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 insulating barrier is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulating barrier.
10. 110kV flame retardant epoxy type insulated copper shell according to claim 1, it is characterized in that, the lateral surface of described flame retardant epoxy insulating part, left copper sheathing flange, right copper sheathing flange three flushes, each copper sheathing flange is all connected by bolt and flame retardant epoxy insulating part, and two end faces of described flame retardant epoxy insulating part are provided with sealing ring with also sealing respectively between corresponding copper sheathing flange.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510683168.1A CN105226590A (en) | 2015-10-20 | 2015-10-20 | 110kV flame retardant epoxy type insulated copper shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683168.1A CN105226590A (en) | 2015-10-20 | 2015-10-20 | 110kV flame retardant epoxy type insulated copper shell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480933A (en) * | 2018-05-16 | 2018-09-04 | 扬州鑫宇电气有限公司 | A kind of cable tail pipe and its manufacturing method |
-
2015
- 2015-10-20 CN CN201510683168.1A patent/CN105226590A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108480933A (en) * | 2018-05-16 | 2018-09-04 | 扬州鑫宇电气有限公司 | A kind of cable tail pipe and its manufacturing method |
| CN108480933B (en) * | 2018-05-16 | 2023-11-03 | 扬州鑫宇电气有限公司 | Cable tail pipe and manufacturing method thereof |
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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 |