CN105185462A - 110kV epoxy type insulation copper housing - Google Patents
110kV epoxy type insulation copper housing Download PDFInfo
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- CN105185462A CN105185462A CN201510682901.8A CN201510682901A CN105185462A CN 105185462 A CN105185462 A CN 105185462A CN 201510682901 A CN201510682901 A CN 201510682901A CN 105185462 A CN105185462 A CN 105185462A
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- copper pipe
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- dioxide granule
- silica dioxide
- epoxy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The invention provides a 110kV epoxy type insulation copper housing, belongs to the electric technical field, and the 110kV epoxy type insulation copper housing comprises the following structures: a left copper pipe formed by a first large copper tube and a first small copper tube, wherein the first large copper tube is provided with a left copper sleeve flange, and one side of the first large copper tube is provided with a left wiring end and a left gluing port; a right copper pipe formed by a second large copper tube and a second small copper tube, wherein the second large copper tube is provided with a right copper sleeve flange, and one side of the second large copper tube is provided with a right gluing port and a right wiring end arranged on the same side with the left wiring end; an epoxy insulating part arranged in an annular manner and formed by casting epoxy resin composite material, and the epoxy insulating part is positioned between the left and right copper sleeve flanges; a ground pin is respectively arranged in each wiring end in a flat manner, the inner end of the ground pin vertically intersects with the corresponding large copper tube, and the outer end of the ground pin is exposed outside the corresponding wiring end. The 110kV epoxy type insulation copper housing is reasonable in design, stable in electrical insulating properties, good in integration performance, and long in service life.
Description
Technical field
The invention belongs to technical field of electricity, relate to a kind of 110kV epoxy type insulated copper shell, particularly a kind of 110kV 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 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 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 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 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, 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 insulating barrier, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulating barrier;
Epoxy insulator, is arranged ringwise and by epoxy resin composite material moulding by casting, described epoxy insulator 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.
In above-mentioned 110kV epoxy type insulated copper shell, described epoxy resin composite material comprises following component and percentage by weight:
Epoxy resin E44:40-60wt%;
Alkali-free glass fibre: 5-20wt%;
Compatilizer: 3-5wt%;
Primary antioxidant: 0.3-0.5wt%;
Auxiliary antioxidant: 0.3-0.5wt%;
Processing aid: 1-5wt%;
Surplus is silicon dioxide.
The composite material of epoxy insulator of the present invention with epoxy resin E44 for matrix, with the addition of reinforcing material alkali-free glass fibre and silicon dioxide simultaneously, epoxy resin-base not only plays parcel reinforcing material in the composite and they is bonded together, and have and support and stable thin but also long fibre columns, prevent 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 epoxy insulator internally, the ability to bear of external applied load.The high-performance that epoxy resin itself has, by being further improved with the acting in conjunction of alkali-free glass fibre, silicon dioxide, improve the combination property of the epoxy insulator 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.Therefore such epoxy insulator is used in 110kV epoxy type insulated copper shell, can greatly can useful life of 110kV epoxy type insulated copper shell, the epoxy insulator that epoxy resin composite material of the present invention is made simultaneously is connected closely with each housing, greatly improves the electrical insulation properties of copper shell.
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 epoxy insulator.
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 compatilizer described in epoxy resin composite material is one or more in epoxy type response type compatilizer, and ordinary city can be selected to sell.
As preferably, the primary antioxidant described in epoxy resin composite material is one or more in antioxidant 1076, antioxidant 1098, antioxidant 1010, antioxidant 2246, antioxidant 4010 or antioxidant DNP.
As preferably, the auxiliary antioxidant described in epoxy resin composite material is one or both in irgasfos 168 or antioxidant 626.
Add primary antioxidant simultaneously, thermal-oxidative aging property that auxiliary anti-oxidant can improve composite material, make material have better aging protection when moulding by casting, and then improve the useful life of the reactive compensation cabinet cabinet that composite material is made.
As preferably, the processing aid described in epoxy resin composite material comprises the processing aid of the normal conventional such as coupling agent, heat stabilizer, lubricant.
In above-mentioned 110kV epoxy type insulated copper shell, one end that described grounding leg exposes corresponding terminals offers connecting hole.
In above-mentioned 110kV epoxy type insulated copper shell, each little copper pipe is all arranged in four segment structures, and towards gradually away from the direction of corresponding large copper pipe, the first paragraph of this little copper pipe and the 3rd section are all in setting of closing up, and the second segment of this little copper pipe and the 4th section are all arranged in cylinder.
In above-mentioned 110kV 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 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 epoxy type insulated copper shell, the lateral surface 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.
In above-mentioned 110kV epoxy type insulated copper shell, each insulating barrier all adopts rotational molding technique to make.
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, 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.
3, epoxy insulator adopts the epoxy resin composite material of specific compatibility to make, composite material with high performance epoxy resin E44 for matrix, by adding the material such as reinforcing material alkali-free glass fiber and silicon dioxide, by the synergy of each component, increase substantially the combination property of epoxy insulator, epoxy insulator is made to have outstanding physics, chemical property, especially there are outstanding corrosion resistance, temperature tolerance, resistance to ag(e)ing etc., there are higher intensity, rigidity etc. simultaneously, and then improve combination property and the useful life of 110kV 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, epoxy insulator; 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 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 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 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 insulating barrier 41, in the circumferential lateral surface being sealed and coated on left copper pipe 10 and described 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, 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 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;
Epoxy insulator 60, is arranged ringwise and by epoxy resin composite material moulding by casting, epoxy insulator 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 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 110kV 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.
Below by specific embodiment, epoxy insulator is further explained.Compatilizer mentioned in the present invention is one or more in epoxy type response type compatilizer, and ordinary city can be selected to sell; Processing aid comprises the processing aid of the normal conventional such as coupling agent, heat stabilizer, lubricant.
Embodiment 1
Raw material is taken: epoxy resin E44:40-60wt% by following composition and percentage by weight thereof; Alkali-free glass fibre: 5-20wt%; Compatilizer: 3-5wt%; Primary antioxidant: 0.3-0.5wt%; Auxiliary antioxidant: 0.3-0.5wt%; Processing aid: 1-5wt%; Surplus is silicon dioxide.
By even in super mixer mixed at high speed for all raw materials except alkali-free glass fibre, then the raw material mixed is added alkali-free glass fibre at twin-screw extrusion pusher side feeding hopper through double screw extruder melting simultaneously, extruding pelletization, makes epoxy insulator finally by pouring forming technology.
Wherein, 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 primary antioxidant is one or more in antioxidant 1076, antioxidant 1098, antioxidant 1010, antioxidant 2246, antioxidant 4010 or antioxidant DNP; Described auxiliary antioxidant is one or both in irgasfos 168 or antioxidant 626.
Embodiment 2
Raw material is taken: epoxy resin E44:40-60wt% by following composition and percentage by weight thereof; Alkali-free glass fibre: 5-20wt%; Compatilizer: 3-5wt%; Primary antioxidant: 0.3-0.5wt%; Auxiliary antioxidant: 0.3-0.5wt%; Processing aid: 1-5wt%; Surplus is silicon dioxide.
By even in super mixer mixed at high speed for all raw materials except alkali-free glass fibre, then the raw material mixed is added alkali-free glass fibre at twin-screw extrusion pusher side feeding hopper through double screw extruder melting simultaneously, extruding pelletization, makes epoxy insulator finally by pouring forming technology.
Wherein, 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 primary antioxidant is one or more in antioxidant 1076, antioxidant 1098, antioxidant 1010, antioxidant 2246, antioxidant 4010 or antioxidant DNP; Described auxiliary antioxidant is one or both in irgasfos 168 or antioxidant 626.
Embodiment 3
Raw material is taken: epoxy resin E44:40-60wt% by following composition and percentage by weight thereof; Alkali-free glass fibre: 5-20wt%; Compatilizer: 3-5wt%; Primary antioxidant: 0.3-0.5wt%; Auxiliary antioxidant: 0.3-0.5wt%; Processing aid: 1-5wt%; Surplus is silicon dioxide.
By even in super mixer mixed at high speed for all raw materials except alkali-free glass fibre, then the raw material mixed is added alkali-free glass fibre at twin-screw extrusion pusher side feeding hopper through double screw extruder melting simultaneously, extruding pelletization, makes epoxy insulator finally by pouring forming technology.
Wherein, 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 primary antioxidant is one or more in antioxidant 1076, antioxidant 1098, antioxidant 1010, antioxidant 2246, antioxidant 4010 or antioxidant DNP; Described auxiliary antioxidant is one or both in irgasfos 168 or antioxidant 626.
Embodiment 4
Raw material is taken: epoxy resin E44:40-60wt% by following composition and percentage by weight thereof; Alkali-free glass fibre: 5-20wt%; Compatilizer: 3-5wt%; Primary antioxidant: 0.3-0.5wt%; Auxiliary antioxidant: 0.3-0.5wt%; Processing aid: 1-5wt%; Surplus is silicon dioxide.
By even in super mixer mixed at high speed for all raw materials except alkali-free glass fibre, then the raw material mixed is added alkali-free glass fibre at twin-screw extrusion pusher side feeding hopper through double screw extruder melting simultaneously, extruding pelletization, makes epoxy insulator finally by pouring forming technology.
Wherein, 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 primary antioxidant is one or more in antioxidant 1076, antioxidant 1098, antioxidant 1010, antioxidant 2246, antioxidant 4010 or antioxidant DNP; Described auxiliary antioxidant is one or both in irgasfos 168 or antioxidant 626.
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 epoxy insulator 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 epoxy insulator 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 epoxy insulator 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 epoxy insulator herein with the difference of embodiment 1.
Comparative example 5
Common commercially available epoxy insulator.
Epoxy insulator in 110kV 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.
Epoxy insulator the performance test results in table 1: embodiment 1-4 and comparative example 1-5 in 110kV epoxy type insulated copper shell
In sum, epoxy insulator in 110kV 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 etc., there is higher intensity, impact toughness simultaneously, and then improve its useful life, and cost is low, asepsis environment-protecting.Above-mentioned epoxy insulator is used in 110kV epoxy type insulated copper shell, epoxy insulator is connected closely with each housing, greatly improve the electrical insulation properties of copper shell, also greatly can improve the combination property in 110kV 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.
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 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 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, each little copper pipe being set and all arranging, towards gradually away from the direction of corresponding large copper pipe in four segment structures, the first paragraph of this little copper pipe and the 3rd section are all arranged in closing in, and the second segment of this little copper pipe and the 4th section are all 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 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.
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 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 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, 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 insulating barrier, in the circumferential lateral surface being sealed and coated on right copper pipe and described right encapsulating mouth through right insulating barrier;
Epoxy insulator, is arranged ringwise and by epoxy resin composite material moulding by casting, described epoxy insulator 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.
2. 110kV 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 E44:40-60wt%;
Alkali-free glass fibre: 5-20wt%;
Compatilizer: 3-5wt%;
Primary antioxidant: 0.3-0.5wt%;
Auxiliary antioxidant: 0.3-0.5wt%;
Processing aid: 1-5wt%;
Surplus is silicon dioxide.
3. 110kV 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.
4. 110kV 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.
5. 110kV epoxy type insulated copper shell according to claim 4, 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.
6. the 110kV epoxy type insulated copper shell according to claim 4 or 5, 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.
7. 110kV 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.
8. 110kV epoxy type insulated copper shell according to claim 1, it is characterized in that, each little copper pipe is all arranged in four segment structures, towards gradually away from the direction of corresponding large copper pipe, the first paragraph of this little copper pipe and the 3rd section are all arranged in closing in, and the second segment of this little copper pipe and the 4th section are all arranged in cylinder; 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.
9. 110kV 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 square through hole, and on each encapsulating mouth, be all movably installed with the encapsulating lid can closing corresponding encapsulating mouth.
10. 110kV epoxy type insulated copper shell according to claim 1, it is characterized in that, the lateral surface 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682901.8A CN105185462A (en) | 2015-10-20 | 2015-10-20 | 110kV epoxy type insulation copper housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682901.8A CN105185462A (en) | 2015-10-20 | 2015-10-20 | 110kV epoxy type insulation copper housing |
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| CN105185462A true CN105185462A (en) | 2015-12-23 |
Family
ID=54907483
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|---|---|---|---|
| CN201510682901.8A Pending CN105185462A (en) | 2015-10-20 | 2015-10-20 | 110kV epoxy type insulation copper housing |
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| CN (1) | CN105185462A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109517339A (en) * | 2018-11-14 | 2019-03-26 | 遵义华正电缆桥架有限公司 | A method of improving cable testing bridge intensity |
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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: 20151223 |