CN105305364A - Copper housing of 110kV straight joint - Google Patents
Copper housing of 110kV straight joint Download PDFInfo
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- CN105305364A CN105305364A CN201510683170.9A CN201510683170A CN105305364A CN 105305364 A CN105305364 A CN 105305364A CN 201510683170 A CN201510683170 A CN 201510683170A CN 105305364 A CN105305364 A CN 105305364A
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Abstract
The invention provides a copper housing of a 110kV straight joint, and belongs to the field of electrical technology. The copper housing comprises a left copper pipe and a right copper pipe; the left copper pipe is composed of a first large copper pipe and a first small copper pipe, a flange connecting piece is mounted on the first large copper pipe in a sealing manner, and one side of the first small copper pipe is provided with a terminal; the right copper pipe is composed of a second large copper pipe and a second small copper pipe, the length of the second large copper pipe is greater than that of the first large copper pipe, a copper sleeve flange is mounted on the second large copper pipe in a sealing manner, and the copper sleeve flange is in sealing connection with the flange connecting piece; and each small copper pipe is of a four-segment structure, towards the direction gradually far from the corresponding large copper pipe, the first and third segments of the small copper pipe are closed up, and the second and fourth segment of the small copper pipe are cylindrical, and the terminal is arranged in the second the segment of the first small copper pipe. The copper housing of the 110kV straight joint has the advantages of high sealing performance, stable electrical insulation performance, high comprehensive performance and long service life.
Description
Technical field
The invention belongs to technical field of electricity, relate to a kind of 110kV straight coupling copper shell, particularly a kind of 110kV straight coupling 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 to design a kind of reasonable in design, 110kV straight coupling copper shell that good airproof performance, electrical insulation properties are stable.
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, good airproof performance, electrical insulation properties are stablized, the 110kV straight coupling copper shell of good combination property, long service life.
Object of the present invention realizes by following technical proposal: a kind of 110kV straight coupling 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, and described first copper pipe is sealed and installed with flange connector away from one end of the first little copper pipe, and described first little copper pipe side is provided with terminals;
Left insulating barrier, is sealed and coated in the circumferential lateral surface of left copper pipe;
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 length of described second largest copper pipe is greater than the length of first 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 the copper sheathing flange that arrange corresponding to flange connector away from one end of the second little copper pipe, and described copper sheathing flange and flange connector are tightly connected;
Right insulating barrier, is sealed and coated in the circumferential lateral surface of right copper pipe;
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, the second segment of this little copper pipe and the 4th section of all setting in cylinder, and described terminals are arranged in the second segment structure of above-mentioned first little copper pipe;
Described left insulating barrier and right insulating barrier are made by epoxy resin composite material.
As a further improvement on the present invention, described epoxy resin composite material comprises the component of following weight portion:
Epoxy resin: 60-80 part;
Polyamide: 30-40 part;
Aramid IIII fiber: 5-15 part;
Fire retardant: 1-6 part;
Curing agent: 3-8 part;
Curing agent promoter: 2-5 part;
Nano SiC: 5-20 part;
Nano silicon: 3-15 part.
Fibre reinforced composites are when being subject to External Force Acting and destroy, general elder generation produces micro-crack in certain single-phase of material, micro-crack more slowly expansion until run into the interface of fiber and matrix, the process such as interfacial detachment, MATRIX CRACKING, fibrous fracture now may occur or extract.Crackle diffusion may not in same plane, above interface can be there is along material Different Plane and take off the process such as fracture, spike protein gene of glutinous, matrix and fiber until penetration of cracks material just destroys, this adduction with regard to making the energy to failure of composite material be much higher than the energy to failure of each component material.Therefore, the epoxy resin composite material of insulating barrier of the present invention with epoxy resin and polyamide for matrix, preferred TDE-85 epoxy resin and 651 polyamide substrate, adopt aramid IIII fiber, nano SiC and nano silicon are reinforcer, by the synergy between each composition, effectively improve impact resistance, toughness and the thermal stability of epoxy resin composite material goods (i.e. left insulating barrier and right insulating barrier), resistance to wear and the fatigue resistance of epoxy resin composite material can also be improved.Because nano SiC and nano silicon have larger specific area, increase with substrate contact area, more micro-crack can be produced when material is hit, absorb more impact energy, thus improve the impact resistance of glass fiber reinforced plastics product.Meanwhile, because the hardness of nano SiC itself is higher, anti-wear performance is good, can increase hardness and the resistance to wear of epoxy resin composite material goods.If but consumption is excessive, particle is too close, and micro-crack easily develops into macroscopic view cracking, and material property can be deteriorated on the contrary, so by its proportional control in above-mentioned scope.In addition, because the fusing point of nano SiC and nano silicon itself is very high, the anti-flammability of epoxy resin composite material goods can be improved.
As preferably, the particle diameter of described aramid IIII fiber is 10-16 μm.Described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.
Aramid III and acetic anhydride do not react at normal temperatures, or reaction is very slow, but under 80 DEG C of conditions, along with the prolongation in processing time, the filament strength of aramid III fiber changes greatly, and when the processing time is within 8h, filament strengthization is not obvious, when reaching 12h when treated, filament strength declines comparatively obvious, and be about as much as about 80% of untreated aramid III intensity, the processing time is when more than 12h, filament strength declines further, loses the high strength of aramid fiber gradually.Through acetic anhydride-modified, reach and increase aramid III surface roughness and specific area, and change the object of fiber surface chemical composition, the interfacial bond property of epoxy resin composite material can be increased.Have good corrasion because of acetic anhydride-modified on the one hand, make fiber surface become coarse, increase the mechanical interlock effect at contact area between matrix and fiber and interface, on the other hand, this processing method all changes the chemical element composition of fiber surface, reduces O/C.
Add failure mode mainly interfacial failure and the matrix destruction of the epoxy resin composite material after untreated aramid III fiber, fiber is without damage substantially, and fiber surface is only stained with a small amount of resin, this illustrates that the interface adhesion of unmodified aramid III fiber and epoxy matrix is poor, do not destroy front interface and matrix at fiber just first to destroy, do not give full play to the high strength of aramid III fiber, the excellent properties such as high-modulus.The failure mode adding the composite epoxy resin of the aramid III fiber after modification mainly mixes destruction, the fiber of interface has attenuated, illustrate that some fiber is torn in single fiber pull-out test experimentation to have come off, and residual fiber surface is also stained with a large amount of matrix, this represents that interfacial adhesion effect is stronger.Therefore, being added with the aramid III fiber after acetic anhydride-modified process in the base more can reinforced epoxy composite material, improves its combination property.
As preferably, described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, wherein Al (OH)
3, Mg (OH)
2be (3.5-5) with the weight ratio of Firebrake ZB three: (5-7.5): 3.Al (OH)
3with Mg (OH)
2the water-dilutable imflammable gas produced during decomposes dehydration, reduces the formation of smog, and the heat that Absorbable rod is a large amount of simultaneously reduces the surface temperature of combustible material, thus plays flame retardant effect, and Al (OH)
3with Mg (OH)
2also less expensive, be conducive to controlling cost.
As preferably, described nano silicon is the mixture comprising nanometer silicon dioxide particle I and nanometer silicon dioxide particle II, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm.The present invention is by the granulated staged part system of two 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 and silica dioxide granule II, the content of described silica dioxide granule I accounts for the 30-50% of mixture gross mass, and the content of silica dioxide granule II accounts for the 50-70% of mixture gross mass.
Again further preferably, when silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.The fine structure of silica dioxide granule II 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, described curing agent is one or both in triethylene tetramine, double focusing cyanamide.
As preferably, described curing accelerator is one or both in glyoxal ethyline, DMP-30.
As a further improvement on the present invention, described first copper pipe and the second little copper pipe are copper tube, and described first little copper pipe and second largest copper pipe are brass tube.
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 insulating barrier is identical, and the wall thickness of large copper pipe is less than the wall thickness of insulating barrier.
As a further improvement on the present invention, the L-shaped setting of described terminals, is provided with grounding leg in terminals, and described grounding leg is red copper bar, and described grounding leg the inner is connected with the first little copper pipe, and terminals outside is exposed in described grounding leg outer end.
As of the present invention another improve, the joint of described copper sheathing flange and flange connector also seals and is provided with sealing ring and sealing circle is arranged on flange connector.
As another improvement of the present invention, described second largest copper pipe offers at least two encapsulating mouths, described encapsulating mouth is through right insulating barrier.
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 copper pipe of left copper pipe and right copper pipe coordinates closely, the two constitutes the shell of through type, ensure that the sealing property of copper shell, makes global copper housing shroud better effects if, its electrical insulation properties is stablized, ensure that the reliability of power cable work.
2, insulating barrier (left insulating barrier and right insulating barrier) adopts the epoxy resin composite material of specific compatibility to make, composite material adds reinforcing material aramid III fiber on TDE-85 epoxy resin and 651 polyamide substrate, the material such as nano SiC and nano silicon, 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 is outstanding corrosion resistance, temperature tolerance, resistance to ag(e)ing, anti-flammability etc., there is higher intensity simultaneously, rigidity etc., and then improve combination property and the useful life of 110kV straight coupling 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; 12, the first little copper pipe; 21, flange connector; 22, copper sheathing flange; 30, terminals; 41, left insulating barrier; 42, right insulating barrier; 50, right copper pipe; 51, second largest copper pipe; 511, encapsulating mouth; 52, the second little copper pipe; 60, grounding leg; 70, 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.
Aramid III fiber is when adding at common structures such as terephthalic acid (TPA) and p-phenylenediamine (PPD), M-phthalic acid and m-phenylene diamine (MPD)s the aramid fiber that the 3rd unit cell obtains as 4,4 '-diaminodiphenyl ether, 5 (6)-amido-2-(4-aminocarbonyl phenyl) benzimidazole etc.
The present invention protects a kind of 110kV straight coupling 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 straight coupling 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 straight coupling 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 flange connector 21 away from one end of the first little copper pipe 12, and the first little copper pipe 12 side is provided with terminals 30;
Left insulating barrier 41, is sealed and coated in the circumferential lateral surface of left copper pipe 10;
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 length of second largest copper pipe 51 is greater than the length of first copper pipe 11, 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 the copper sheathing flange 22 that arrange corresponding to flange connector 21 away from one end of the second little copper pipe 52, and copper sheathing flange 22 and flange connector 21 are tightly connected;
Right insulating barrier 42, is sealed and coated in the circumferential lateral surface of right copper pipe;
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 of all setting in cylinder, terminals 30 are arranged in the second segment structure of above-mentioned first little copper pipe 12.Little copper pipe layout like this its objective is that to make copper pipe shield effectiveness better.
In the present case, the main left copper pipe 10 of copper shell, right copper pipe 50 two part composition, the Hermetical connecting structure that copper sheathing flange 22 and flange connector 21 are formed is for being connected left copper pipe 10 and 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 straight coupling 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 copper pipe of left copper pipe 10 and right copper pipe 50 coordinates closely, and the two constitutes the shell of through type, ensure that the sealing property of copper shell, make global copper housing shroud better effects if, its electrical insulation properties is stablized, ensure that the reliability of power cable work.
In this case, terminals 30 arrange ingenious, make copper shell layout more reasonable, and terminals 30 are for connecting earth connection and earth connection being connected nigh earth electrode, ensure stability and the reliability of work.
In invention; this 110kV straight coupling 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 straight coupling 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.
Preferably, first copper pipe 11 and the second little copper pipe 52 are copper tube, and the first little copper pipe 12 and second largest copper pipe 51 are brass tube.Red copper is industrial pure copper, and brass is alloying metal, and the two also exists the difference in hardness and intensity, its performance is also variant, the vibrational power flow adopting copper tube and brass tube to cooperatively interact in this case, designs ingenious, and the hardness of global copper shell and electrical insulation properties are ensured very well.
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 L-shaped setting of terminals 30, is provided with grounding leg 60 in terminals 30, and grounding leg 60 is red copper bar, and grounding leg 60 the inner is connected with the first little copper pipe 12, and it is outside that terminals 30 are exposed in grounding leg 60 outer end.
Grounding leg 60 while connect with corresponding little copper pipe, another side, for connecting earth connection, makes cable reliable operation; Further, grounding leg 60 vibrational power flow of red copper bar makes cable work more reliable.
Preferably, copper sheathing flange 22 and the joint of flange connector 21 also seal and are provided with sealing ring 70 and sealing circle 70 is arranged on flange connector 21.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, each insulating barrier (i.e. left insulating barrier 41 and right insulating barrier 42) is made by epoxy resin composite material, easy to process, insulating barrier is connected more reliable with copper pipe.
Preferably, for making encapsulating work convenient, efficient, preferred second largest copper pipe 51 offers at least two encapsulating mouths 511, encapsulating mouth 511 is through right insulating barrier 42.
This copper shell is arranged on single-core cable joint, its encapsulating mouth 511 for insulating material (as waterproof insulation glue) being poured into the inner space of copper shell, with attached cable transition joint and copper shell.
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 described epoxy resin composite material comprises the component of following weight portion:
TDE-85 epoxy resin: 70 parts;
651 polyamide: 33 parts;
Aramid IIII fiber: 12 parts;
Fire retardant: 3 parts;
Curing agent: 6 parts;
Curing agent promoter: 3 parts;
Nano SiC: 8 parts;
Nano silicon: 13 parts.
Wherein, the particle diameter of described aramid IIII fiber is 14 μm.Described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.Described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, Al (OH)
3, Mg (OH)
2be 4:6:3 with the weight ratio of Firebrake ZB three; Described nano silicon is the mixture comprising nanometer silicon dioxide particle I 40% and nanometer silicon dioxide particle II 60%, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm; When silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.
The component of above-mentioned epoxy resin composite material is made left insulating barrier and right insulating barrier respectively by conventional forming method (as low pressure injection formaing, injection molding, SMC etc.), is sealed and coated on the circumferential lateral surface of left copper pipe and right copper pipe respectively.
Embodiment 2
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and described epoxy resin composite material comprises the component of following weight portion:
TDE-85 epoxy resin: 65 parts;
651 polyamide: 38 parts;
Aramid IIII fiber: 8 parts;
Fire retardant: 5 parts;
Curing agent: 4 parts;
Curing agent promoter: 4 parts;
Nano SiC: 18 parts;
Nano silicon: 5 parts.
Wherein, the particle diameter of described aramid IIII fiber is 12 μm.Described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.Described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, Al (OH)
3, Mg (OH)
2be 4.5:7:3 with the weight ratio of Firebrake ZB three; Described nano silicon is the mixture comprising nanometer silicon dioxide particle I 35% and nanometer silicon dioxide particle II 65%, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm; When silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.
The component of above-mentioned epoxy resin composite material is made left insulating barrier and right insulating barrier respectively by conventional forming method (as low pressure injection formaing, injection molding, SMC etc.), is sealed and coated on the circumferential lateral surface of left copper pipe and right copper pipe respectively.
Embodiment 3
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and described epoxy resin composite material comprises the component of following weight portion:
TDE-85 epoxy resin: 60 parts;
651 polyamide: 40 parts;
Aramid IIII fiber: 5 parts;
Fire retardant: 6 parts;
Curing agent: 3 parts;
Curing agent promoter: 5 parts;
Nano SiC: 20 parts;
Nano silicon: 3 parts.
Wherein, the particle diameter of described aramid IIII fiber is 16 μm.Described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.
Described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, Al (OH)
3, Mg (OH)
2be 3.5:5:3 with the weight ratio of Firebrake ZB three; Described nano silicon is the mixture comprising nanometer silicon dioxide particle I 30% and nanometer silicon dioxide particle II 70%, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm; When silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.
The component of above-mentioned epoxy resin composite material is made left insulating barrier and right insulating barrier respectively by conventional forming method (as low pressure injection formaing, injection molding, SMC etc.), is sealed and coated on the circumferential lateral surface of left copper pipe and right copper pipe respectively.
Embodiment 4
Left insulating barrier described in the present embodiment and right insulating barrier are made by epoxy resin composite material, and described epoxy resin composite material comprises the component of following weight portion:
TDE-85 epoxy resin: 80 parts;
651 polyamide: 30 parts;
Aramid IIII fiber: 15 parts;
Fire retardant: 1 part;
Curing agent: 8 parts;
Curing agent promoter: 2 parts;
Nano SiC: 5 parts;
Nano silicon: 15 parts.
Wherein, the particle diameter of described aramid IIII fiber is 10 μm.Described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.Described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, Al (OH)
3, Mg (OH)
2be 5:7.5:3 with the weight ratio of Firebrake ZB three; Described nano silicon is the mixture comprising nanometer silicon dioxide particle I 30-50% and nanometer silicon dioxide particle II 50-70%, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm; When silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.
The component of above-mentioned epoxy resin composite material is made left insulating barrier and right insulating barrier respectively by conventional forming method (as low pressure injection formaing, injection molding, SMC etc.), is sealed and coated on the circumferential lateral surface of left copper pipe and right copper pipe respectively.
Curing agent described in embodiment 1-4 be in triethylene tetramine, double focusing cyanamide one or both.Described curing accelerator is one or both in glyoxal ethyline, DMP-30.
Comparative example 1
Only be that not containing 651 polyamide, other are in the same manner as in Example 1, are not repeated only containing TDE-85 epoxy resin 103 parts 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 be only replace by more conventional fillers, other are in the same manner as in Example 1, are not repeated only not containing aramid IIII fiber in the epoxy resin composite material of this comparative example insulating barrier herein with the difference of embodiment 1.
Comparative example 3
The nano silicon be only in the epoxy resin composite material of this comparative example insulating barrier with the difference of embodiment 1 is only the silicon dioxide of single size, and other are in the same manner as in Example 1, are not repeated herein.
Insulating barrier in 110kV straight coupling copper shell in embodiment 1-4 and comparative example 1-3 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 1-3 in 110kV straight coupling copper shell
Wherein LOI is the insulating barrier limited oxygen index in 110kV straight coupling copper shell.
In sum, insulating barrier in 110kV straight coupling 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 straight coupling copper shell, greatly improve the electrical insulation properties of copper shell, anti-flammability, also greatly can improves the combination property in 110kV straight coupling 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.
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 straight coupling 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, and described first copper pipe is sealed and installed with flange connector away from one end of the first little copper pipe, and described first little copper pipe side is provided with terminals;
Left insulating barrier, is sealed and coated in the circumferential lateral surface of left copper pipe;
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 length of described second largest copper pipe is greater than the length of first 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 the copper sheathing flange that arrange corresponding to flange connector away from one end of the second little copper pipe, and described copper sheathing flange and flange connector are tightly connected;
Right insulating barrier, is sealed and coated in the circumferential lateral surface of right copper pipe;
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, the second segment of this little copper pipe and the 4th section of all setting in cylinder, and described terminals are arranged in the second segment structure of above-mentioned first little copper pipe;
Described left insulating barrier and right insulating barrier are made by epoxy resin composite material.
2. 110kV straight coupling copper shell according to claim 1, it is characterized in that, described epoxy resin composite material comprises the component of following weight portion:
Epoxy resin: 60-80 part;
Polyamide: 30-40 part;
Aramid IIII fiber: 5-15 part;
Fire retardant: 1-6 part;
Curing agent: 3-8 part;
Curing agent promoter: 2-5 part;
Nano SiC: 5-20 part;
Nano silicon: 3-15 part.
3. 110kV straight coupling copper shell according to claim 2, is characterized in that, the particle diameter of described aramid IIII fiber is 10-16 μm, and described aramid IIII fiber is at 80 DEG C, process the modified aramid IIII fiber of 8h by acetic anhydride.
4. 110kV straight coupling copper shell according to claim 2, is characterized in that, described fire retardant is Al (OH)
3, Mg (OH)
2with the mixture of Firebrake ZB, wherein Al (OH)
3, Mg (OH)
2be (3.5-5) with the weight ratio of Firebrake ZB three: (5-7.5): 3.
5. 110kV straight coupling copper shell according to claim 2, it is characterized in that, described nano silicon is the mixture comprising nanometer silicon dioxide particle I and nanometer silicon dioxide particle II, and wherein silica dioxide granule I is of a size of 200-300 μm, silica dioxide granule II is of a size of 600-800nm.
6. 110kV straight coupling copper shell according to claim 5, it is characterized in that, in the mixture of silica dioxide granule I and silica dioxide granule II, the content of described silica dioxide granule I accounts for the 30-50% of mixture gross mass, and the content of silica dioxide granule II accounts for the 50-70% of mixture gross mass.
7. the 110kV straight coupling copper shell according to claim 5 or 6, is characterized in that, when silica dioxide granule II has loose structure, its bore dia is 3-6nm, and specific area is 220-320m
2/ g.
8. 110kV straight coupling copper shell according to claim 1, is characterized in that, described first copper pipe and the second little copper pipe are copper tube, and described first little copper pipe and second largest copper pipe are brass tube; 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 straight coupling copper shell according to claim 1, is characterized in that, the L-shaped setting of described terminals, in terminals, grounding leg is installed, described grounding leg is red copper bar, and described grounding leg the inner is connected with the first little copper pipe, and terminals outside is exposed in described grounding leg outer end.
10. 110kV straight coupling copper shell according to claim 1, it is characterized in that, the joint of described copper sheathing flange and flange connector also seals and is provided with sealing ring and sealing circle is arranged on flange connector, described second largest copper pipe offers at least two encapsulating mouths, described encapsulating mouth is through right insulating barrier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510683170.9A CN105305364A (en) | 2015-10-20 | 2015-10-20 | Copper housing of 110kV straight joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510683170.9A CN105305364A (en) | 2015-10-20 | 2015-10-20 | Copper housing of 110kV straight joint |
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| CN105305364A true CN105305364A (en) | 2016-02-03 |
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| CN201510683170.9A Pending CN105305364A (en) | 2015-10-20 | 2015-10-20 | Copper housing of 110kV straight joint |
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| CN103762542A (en) * | 2013-11-26 | 2014-04-30 | 宁波东昊电缆附件有限公司 | Copper shell of cable intermediate joint |
| CN104245775A (en) * | 2012-04-16 | 2014-12-24 | 新日铁住金化学株式会社 | Epoxy resin composition and cured product |
| CN104894850A (en) * | 2015-06-29 | 2015-09-09 | 中蓝晨光化工研究设计院有限公司 | Chemical modification method and chemical modification device for aramid fibers |
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|---|---|---|---|---|
| CN102131841A (en) * | 2008-08-28 | 2011-07-20 | 三菱丽阳株式会社 | Epoxy resin composition and prepreg using same, fiber-reinforced composite resin tubular body manufactured from prepreg and manufacturing method therefor, and fiber-reinforced composite resin molded body |
| CN104245775A (en) * | 2012-04-16 | 2014-12-24 | 新日铁住金化学株式会社 | Epoxy resin composition and cured product |
| CN103762542A (en) * | 2013-11-26 | 2014-04-30 | 宁波东昊电缆附件有限公司 | Copper shell of cable intermediate joint |
| CN104894850A (en) * | 2015-06-29 | 2015-09-09 | 中蓝晨光化工研究设计院有限公司 | Chemical modification method and chemical modification device for aramid fibers |
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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: 20160203 |