CN102122551B - Composite insulator - Google Patents
Composite insulator Download PDFInfo
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- CN102122551B CN102122551B CN 201010003283 CN201010003283A CN102122551B CN 102122551 B CN102122551 B CN 102122551B CN 201010003283 CN201010003283 CN 201010003283 CN 201010003283 A CN201010003283 A CN 201010003283A CN 102122551 B CN102122551 B CN 102122551B
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- wall
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- 239000012212 insulator Substances 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 54
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
- 239000010931 gold Substances 0.000 claims description 32
- 229910052737 gold Inorganic materials 0.000 claims description 32
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 27
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- KHDSWONFYIAAPE-UHFFFAOYSA-N silicon sulfide Chemical compound S=[Si]=S KHDSWONFYIAAPE-UHFFFAOYSA-N 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 150000002343 gold Chemical class 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims 2
- 229920000715 Mucilage Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 229920002379 silicone rubber Polymers 0.000 abstract description 10
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000000565 sealant Substances 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 239000003292 glue Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000004590 silicone sealant Substances 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a composite insulator. The composite insulator comprises a core rod, a sheath and a connecting piece, wherein the sheath is coated on the outer side of the core rod; the connecting piece is connected with the core rod and the sheath; the sheath is made of high-temperature vulcanized silicon rubber; the connecting piece comprises a body and a bump which is arranged by surrounding the outer wall of the body; the body comprises at least one wedged groove which is circularly arranged on the outer wall of the body; and the sheath is coated on the outer walls of the bump and the wedged groove. In the composite insulator, room-temperature vulcanized silicon rubber is not used as a sealant, and the high-temperature vulcanized silicon rubber is adopted. Since the high-temperature vulcanized silicon rubber is aging-resistant, the sealing effect of the composite insulator is difficult to damage by erosion of an external environment when the composite insulator is exposed outdoors and even in certain severe environments. Meanwhile, the sheath cannot be stripped off from encapsulated rubber on a hardware tool and the core rod by an external force factor produced during transportation, mounting and maintenance by using the buckling effect of the bump and the wedged groove on the sheath, so that the sealing failure cannot be caused.
Description
Technical field
The present invention relates to a kind of composite insulator, particularly a kind of composite insulator with good seal performance.
Background technology
Along with the needs of the development of power industry, particularly extra-high voltage electric transmission and transformation, for the various performance requirements of composite insulator, dodge ability, make easy to maintenancely as weight, anti-soil, and sealing property etc. is more and more harsher.General composite insulator all comprises following a few part, i.e. plug, sheath and a full skirt that is coated on the plug outside, and the connector that is arranged at described plug two ends and is connected with plug and sheath.Be understandable that, when described composite insulator is the line insulation period of the day from 11 p.m. to 1 a.m, described connector can be gold utensil.When described composite insulator was post insulator, this connector can be flange.In the use procedure of above-mentioned composite insulator, if after the seal break-off of insulator, outside moisture can be invaded plug, thereby can cause the acid etching of plug.There are some researches show, acid etching is one of major reason of core brittle fracture, and end part seal destroys negative consequences such as also may causing interior dielectric breakdown accident simultaneously.
See also Fig. 1, it is a kind of structural representation of end seal structure of Composite Insulators.This Composite Insulators comprises that 2, one of sheaths that 1, one of a plug is coated on this plug outer wall are arranged on the gold utensil 3 of described mandrel tip.Described gold utensil 3 comprises an inner chamber.Described plug 1 inserts in the inner chamber of these gold utensils 3 with sheath 2, and the internal diameter of this inner chamber is greater than the summation of described plug 1 with the diameter of sheath 2 so that between the inner chamber of gold utensil 3 and sheath 2 filled chamber temperature vulcanizable silicone fluid sealant 4.Also be provided with two cannelures 5 on the chamber wall of the inner chamber of the gold utensil 3 of this composite insulator, this cannelure 5 can filled chamber temperature vulcanizable silicone glue, also sealing ring can be set, thereby form the double sealing structure of room temperature vulcanization silicone sealant 4 and sealed picture between the inner chamber of gold utensil 3 and sheath 2.
But composite insulator all is exposed to outdoor usually, and in the time of particularly in some rugged environments, external environment can be destroyed its sealing effectiveness to the erosion of room temperature vulcanization silicone sealant.In addition, for the dual-seal of sealing ring with sulfuration silica gel, if silicon rubber and connector bonding force are too little, under the external force factor that produces in transportation, installation and maintenance process, room temperature vulcanization silicone sealant 4 may be peeled off from encapsulate on sheath 2 and gold utensil 3, be prone to the gap, thereby seal failure occurs.
Summary of the invention
In view of this, be necessary to provide a kind of composite insulator with end seal structure of good seal performance.
A kind of composite insulator, it comprises a plug, sheath and a connector that is connected with described plug and sheath that is coated on outside this plug.Described sheath is made by high-temperature silicon disulfide rubber.Described connector comprises the projection that a body and arrange and are connected with this body outer wall around this body outer wall.Described body comprises that also at least one is around the wedge-shaped slot that is arranged at this body outer wall.Described wedge-shaped slot along described body shaft to sectional view in, this wedge-shaped slot radially and away from the center position of this body draws in along body.Described sheath is coated on the outer wall of this projection and wedge-shaped slot.
Be compared with the prior art, above-mentioned composite insulator does not use room temperature vulcanized silicone rubber to make fluid sealant, has all adopted high-temperature silicon disulfide rubber.Because high-temperature silicon disulfide rubber has ageing-resistant characteristic, therefore, when this composite insulator is exposed to when outdoor, or even in some rugged environments, the erosion of external environment also is difficult to destroy its sealing effectiveness.Simultaneously in the snap effect of utilizing described projection and wedge-shaped slot to described sheath, the external force factor that produces in transportation, installation and maintenance process can not strip down sheath encapsulate on gold utensil and the plug yet, therefore can not cause seal failure yet.
Description of drawings
Fig. 1 is the structural representation of the end seal structure of existing a kind of composite insulator.
Fig. 2 is the structural representation of the composite insulator that provides of first embodiment of the invention.
Fig. 3 is the structural representation of the composite insulator that provides of second embodiment of the invention.
Fig. 4 is the structural representation of the composite insulator that provides of third embodiment of the invention.
Fig. 5 is the profile of the flange in the composite insulator of Fig. 4.
Fig. 6 be Fig. 5 flange along A to structural representation.
Embodiment
For the present invention is further described, lifts following preferred embodiment and coordinate accompanying drawing to be described in detail as follows:
See also Fig. 2, be the structural representation of the composite insulator 100 of the first embodiment provided by the invention.What need to further illustrate is that in the first embodiment, this composite insulator 100 is a line insulator.Described composite insulator 100 comprises that 11, one of plugs are coated on 12, one gold utensils 13 that are connected with described plug 11 and sheath 12 of sheath in this plug 11 outsides and at least one is arranged on the full skirt 14 of sheath 12 outer walls.
Described plug 11 is the expoxy glass rod iron of a solid construction, and it is formed by the glass fibre pultrusion that epoxy resin adhesive liquid soaks into.The expoxy glass rod iron is in forming process, and epoxy resin adhesive liquid and glass fibre form epoxy resin-base, i.e. epoxy resin cured product through the series of physical chemical change.Simultaneously, this epoxy resin cured product forms the boundary layer of structure and superior performance between epoxy resin adhesive liquid and glass fibre, this boundary layer is combined into an integral body to glass fibre and epoxide-resin glue, makes the plug 11 of being made by this epoxy resin and glass fibre have good mechanical performance and electric property.Described glass fibre can be the uninterrupted organdy of alkali-free, and this glass fibre accounts for 70%～80% of plug 11 total weights, and in the present embodiment, glass fibre accounts for 78% of plug 11 total weights.Described plug 11 adopts pultrude process to make, i.e. in the time of the described not completely crued plug of moulding 11, drawing goes out this not completely crued plug 11, then it is carried out integrally curing.
Described sheath 12 and full skirt 14 all are coated on described plug 11 by the high-temperature silicon disulfide rubber integral injection molding, and wherein sheath 12 is arranged between plug 11 and full skirt 14.What certainly can expect is that described sheath 12 also can be made respectively with full skirt 14, and then combines.Described sheath 12 is coated on whole plug 11, and has part sheath 12 to be coated on gold utensil 13.High-temperature silicon disulfide rubber is that the polysiloxane (being rubber) of HMW (molecular weight is generally 40～800,000) adds reinforced filling and other various additives, the employing organic peroxide is vulcanizing agent, and a kind of rubber of becoming of interlinkage at high temperature, this rubber is referred to as silicon rubber.The reinforced filling of high-temperature silicon disulfide rubber can be white carbon, and it can make ten times of the strength increases of vulcanizate.To add various additives be mainly the cost that reduces glue, improve properties of rubber and give the various properties of vulcanizate such as fire-retardant, conduction etc.In the present embodiment, described high-temperature silicon disulfide rubber includes following part and forms: methyl vinyl silicone rubber, white carbon, aluminium hydroxide, silicone oil and vulcanizing agent etc., and the shared weight ratio of described each component is: methyl vinyl silicone rubber 20%～50%, white carbon 20～60%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.
Described full skirt 14 comprises at least one first full skirt 141, the second full skirt 142 that at least one and the first full skirt 141 intervals arrange, and at least one is arranged on the 3rd full skirt 143 between the first full skirt 141 and the second full skirt 142, and the 3rd full skirt 143 also arranges with the first full skirt 141, the second full skirt 142 intervals.Described the first full skirt 141, the second full skirt 142 and the 3rd full skirt 143 have different skirts long, for example the skirt of the first full skirt 141 is grown up longly in the skirt of the 3rd full skirt 143, and the skirt of the second full skirt 142 is grown up long and long less than the skirt of the first full skirt 141 in the skirt of the 3rd full skirt 143.Certainly be also contemplated that described full skirt 14 is not limited to include only described first, second, third full skirt 141,142,143, can also comprise the more skirts little different full skirt of growing up.And, this, second, third full skirt 141,142,143 arrangement mode also be not limited to above-mentioned arrangement mode, and other arrangement mode arbitrarily can be arranged.Preferably, the long L of the skirt of described the second full skirt 142
2With the long L of the skirt of the first full skirt 141
1Ratio be 60%L
1≤ L
2≤ 90%L
1, the long L of the skirt of described the 3rd full skirt 143
3With the long L of the skirt of the second full skirt 142
2Ratio be 60%L
2≤ L
3≤ 90%L
2The inclined angle alpha of the upper surface of described the first full skirt 141 is 5 °≤α≤25 °, and the angle of inclination beta of lower surface is 2 °≤β≤6 °, and in the present embodiment, the inclined angle alpha of the upper surface of the first full skirt 141 is 8 °, and the lower surface angle of inclination beta is 5 °.The inclination angle of described second and third full skirt 142,143 upper and lower surface can be identical with the inclination angle of the first full skirt 141.The inclination angle of described first, second, third full skirt 141,142,143 upper and lower surface is controlled at certain limit, be conducive to improve the self-cleaning of each full skirt, and first, second, third full skirt 141, the long proportional control of 142,143 skirt are conducive to avoid the bridge network between adjacent full skirt under the condition of drenching with rain in certain scope.Be understandable that, described composite insulator 100 can comprise a plurality of full skirts 14, also can only have one.When described composite insulator 100 comprised a plurality of full skirt 14, these a plurality of full skirts 14 can be one-body molded, also can distinguish moulding, then is bonded in the outside of sheath 12 by viscose glue.
Described gold utensil 13 can be used for connecting wire or transmission tower as a kind of connector.This gold utensil 13 can be cap nest and pin ball, or other play the metal-ware of linkage function arbitrarily.In view of no matter be cap nest, pin ball, or other, its connected mode with plug 11 and sheath 12 is all the same, so in the present embodiment, gold utensil 13 and plug 11 and the connected mode of sheath 12 and the structure of this gold utensil 13 is described as an example of pin ball example.Described gold utensil 13 comprises that a body 131 and one are around these body 131 outer wall settings and the projection 132 that is connected with these body 131 outer walls.Described sheath 12 is coated on the outer wall of this projection 132 and part body 131.
Described body 131 has an inner chamber, is used for patching stationary core rod 11.This inner chamber can have any shape, and as square, circular etc., certainly preferably, the cross section of plug 11 should be consistent with the cross sectional shape of this inner chamber.In the present embodiment, this inner chamber is circular, and its internal diameter size is suitable with the diameter of plug 11, so that plug 11 crimping that will insert in it are fixed.Described body 131 comprises that also at least one is around the wedge-shaped slot 133 that is arranged at these body 131 outer walls.Along in the axial sectional view of described body 131, this wedge-shaped slot 133 radially and away from the center position of this body 131 draws in along body 131 at this wedge-shaped slot 133.This wedge-shaped slot 133 is along in the axial cross section shape of described body 131, its acute angle
Angle be 70 the degree to 90 the degree between, be beneficial to liquid high-temperature silicon disulfide rubber and fully be filled in this wedge-shaped slot 133.In the present embodiment, described wedge-shaped slot 133 is a dovetail groove, and two parallel edges of described dovetail groove are roughly parallel to the sidewall of described body 131, and near the parallel edges of the madial wall of described body 131 greater than the parallel edges away from the madial wall of described body 131.The angle of the acute angle of this dovetail groove is 78 degree.When injection moulding sheath 12, require it to coat whole wedge-shaped slot 133, due near the parallel edges of the madial wall of described body 131 greater than the parallel edges away from the madial wall of described body 131, make the jacket portions that is injected in it be stuck in wherein by this wedge-shaped slot 133, thereby can further increase the adhesion between sheath 14 and gold utensil 13, to avoid sheath 14 because external force factor strips down from gold utensil 14 and plug 11.
Described projection 132 can be one-body molded with described body 131, also can be fixed on by welding method the optional position of the outer wall of described body 131.In the present embodiment, described projection 132 is one-body molded with described body 131, and is arranged at the end of body 131, and described projection 132 is extended the end of this body 131 simultaneously, thereby forms a step 134 at the end of body 131 and the end of this body 131.When injection moulding sheath 12, high-temperature silicon disulfide rubber can be injected in this step 134, also can be in this step 134 the embedding sealing circle.When being injected into high-temperature silicon disulfide rubber in this step 134, be conducive to increase the adhesion of sheath 12 and gold utensil 13, avoid sheath 12 because external force factor strips down from gold utensil 13 and plug 11, can certainly play the effect of sealing.In the present embodiment, embedded a sealing ring 15 in this projection 132 and the formed step 134 of body 131.Sealing circle 15 can be O-ring seals, square seal ring, or U-shaped sealing ring.In the present embodiment, sealing circle 15 is an O-ring seals.When in the inner chamber that plug 11 crimping is entered gold utensil 13, described sealing ring 15 just can be embedded in body 131 and the formed cavity of plug 11 by projection 132, gold utensil 13 tightly, thereby play the effect of the junction of sealing plug 11 and gold utensil 11, to prevent that further extraneous aqueous vapor from entering plug 11 and causing the brittle failure of plug 11 with the junction of gold utensil 11.
See also Fig. 3, be the structural representation of the composite insulator 200 of the second embodiment provided by the invention.This composite insulator 200 comprises that 21, one of plugs are coated on 22, one gold utensils 23 that are connected with described plug 21 and sheath 22 of sheath in this plug 21 outsides and at least one is arranged on the full skirt 24 of sheath 22 outer walls.
The composite insulator 200 of this second embodiment is also a kind of line insulator, described plug 21, sheath 22 and full skirt 24 can with the first embodiment in plug 21, sheath 22 and full skirt 24 structure with the effect basic identical, repeat no more at the present embodiment.
Described gold utensil 23 comprise a body 231, one around these body 231 outer wall settings and the projection 232 that is connected with these body 231 outer walls and one around the metal coating ring 232 that is arranged on these body 231 outer walls.Described sheath 22 is coated on the outside of this projection 232, part metals guard ring 233 and body 231.Add the thought that this metal coating ring 233 mainly is based on a kind of sacrificial electrode.Because under direct voltage, when composite insulator 200 surface leakage currents are flowed through the intersection of described body 231 and sheath 22, electrochemical effect can occur.At this moment, described body 231 is in positive pole, cause the metal material of this intersection to be corroded under electrochemical action, thereby cause end part seal to lose efficacy, easily make water penetrate into the inner chamber of body 231, etch plug 21, and then cause the mechanical bearing capacity of composite insulator 200 to descend, the serious accidents such as brittle failure even occur.Therefore; the preservative treatment of this body 231 is taked the method for metal anode protection; namely at this intersection, the metal coating ring 233 larger than the activity of body 231 is set; thereby tube body 231 is not in what position electrochemical corrosion phenomenon; what corroded is metal coating ring 233 as anode forever, and then reaches the purpose of protection body 231.This metal coating ring 233 can be by welding, and the methods such as casting are fixed on body 231.In the present embodiment, in order further to fix this metal coating ring 233, be provided with a cannelure 234 on body 231, be cast with metal coating ring 233 in this annular 234, utilize principle of expanding with heat and contracting with cold, this metal coating ring 233 is fixed in cannelure 234.What also need to further illustrate is that guaranteed for the time limit that this gold utensil 23 is used, the weight of this metal coating ring 233 must be complementary with the service life of this gold utensil 23.
This metal coating ring 233 comprises that also at least one is around the wedge-shaped slot 235 that is arranged at these metal coating ring 233 outer walls.In the structure of this wedge-shaped slot 235 and function and the first embodiment, wedge-shaped slot 133 is similar, here also is not described in detail.
The structure of described projection 232 and function are also identical with projection 131 in the first embodiment, repeat no more.
See also Fig. 4, be the composite insulator 300 of the 3rd embodiment provided by the invention.What need to further illustrate is that in the 3rd embodiment, this composite insulator 300 is a post insulator.Described composite insulator 300 comprises that 31, one of plugs are coated on 32, one flanges 33 that are connected with described plug 31 and sheath 32 of sheath in this plug 31 outsides and at least one is arranged on the full skirt 34 of sheath 32 outer walls.
Described plug 31, sheath 32 and full skirt 34 can with the first embodiment in plug 11, sheath 12 and full skirt 14 structure with the effect basic identical, difference can only be its size, the variation that length, diameter etc. are done according to actual needs, for example, because post composite insulator need to have larger bending resistance, the diameter of its plug 31 is larger than the diameter of the plug 11 in the first embodiment, but its material, processing procedures etc. are all similarly, repeat no more at the present embodiment.
See also Fig. 5 and Fig. 6, described flange 33 by a pedestal 331, one be arranged at pedestal 331 an end and with the vertical cannula portion that is connected 332 of pedestal 331, at least one is connected with reinforcement 333 between pedestal 331 and cannula portion and one around these cannula portion 332 outer wall settings and the projection 334 that is connected with these cannula portion 332 outer walls.
Described pedestal 331 can be one-body molded with cannula portion 332, and also can be fixed by methods such as welding links together.Described pedestal 331 comprises a plurality of fixing holes 335 that are arranged on this pedestal 331, and this fixing hole 335 is used for this composite insulator 300 is passed through bolt (not shown) and other device, and as lightning arrester, switch etc. link together.
Described cannula portion 332 comprises that at least one is arranged on the hole for injecting glue 336 on these cannula portion 332 inwalls, at least one is arranged on the solid glue groove 337 of annular of cannula portion 332 inwalls and axially consolidates glue groove 338, and at least one is around the wedge-shaped slot 339 that is arranged at these cannula portion 332 outer walls.Described hole for injecting glue 336 is arranged on the sidewall of cannula portion 332, and is connected with the solid glue groove 337 of described annular and axial glue groove 338 admittedly, is used for glue is injected into the solid glue groove 337 of this annular and axial glue groove 338 admittedly.In the present embodiment, the solid glue groove 337 of annular and axial glue groove 338 admittedly respectively are designed to 4.It is described that axially glue groove 338 and annular solid glue groove 337 connect admittedly.
Described projection 334 is similar with structure and projection 132, the wedge-shaped slot 133 in function and the first embodiment of wedge-shaped slot 339, here also is not described in detail.
Be compared with the prior art, above-mentioned composite insulator does not use room temperature vulcanized silicone rubber to make fluid sealant, all adopted high-temperature silicon disulfide rubber, and high-temperature vulcanized silicon has ageing-resistant characteristic, therefore, when this composite insulator is exposed to outdoorly, or even in some rugged environments, the erosion of external environment also is difficult to destroy its sealing effectiveness.Simultaneously in the snap effect of utilizing described projection and wedge-shaped slot to described sheath, the external force factor that produces in transportation, installation and maintenance process can not strip down sheath encapsulate on gold utensil and the plug yet, therefore can not cause seal failure yet.
In addition, those skilled in the art can also do other variation in spirit of the present invention, as long as it does not depart from technique effect of the present invention, all should be included in the present invention's scope required for protection.
Claims (9)
1. composite insulator, it comprises a plug, sheath and a connector that is connected with described plug and sheath that is coated on outside this plug, described sheath is made by high-temperature silicon disulfide rubber, described connector comprises a body, a projection that arranges and be connected with this body outer wall around this body outer wall, and at least one is around the wedge-shaped slot that is arranged at this body outer wall, described wedge-shaped slot along described body shaft to sectional view in, this wedge-shaped slot radially and away from the center position of this body draws in along body, described sheath is coated on the outer wall of this projection and wedge-shaped slot, it is characterized in that: described body also comprises a metal coating ring, this metal coating ring is around being arranged on body, and the metal active of this metal coating ring is greater than the metal active of body.
2. composite insulator as claimed in claim 1 is characterized in that: described plug is a kind of in solid and hollow, and its material is fiberglass, and described fiberglass is made by the glass fiber yarn that is impregnated with epoxy resin.
3. composite insulator as claimed in claim 1, it is characterized in that: described connector is gold utensil, this gold utensil is crimped on an end of described plug.
4. composite insulator as claimed in claim 1, it is characterized in that: described connector is flange, this flange is connected with described plug mucilage binding.
5. composite insulator as claimed in claim 1, it is characterized in that: described projection is arranged at the end of the body of connector, and extends the end of this body.
6. composite insulator as claimed in claim 1, it is characterized in that: described wedge-shaped slot is arranged on the outer wall of this metal coating ring.
7. composite insulator as claimed in claim 1 is characterized in that: described wedge-shaped slot along body shaft to the cross section form wedge, the angle of its acute angle is that 70 degree are between 90 degree.
8. composite insulator as claimed in claim 1, it is characterized in that: be arranged on a plurality of full skirts on the outer wall of described sheath, the diameter of described a plurality of full skirts is unequal.
9. composite insulator as claimed in claim 1, is characterized in that: also be provided with a sealing ring between the end face of described connector and sheath adjacency and sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003283 CN102122551B (en) | 2010-01-07 | 2010-01-07 | Composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010003283 CN102122551B (en) | 2010-01-07 | 2010-01-07 | Composite insulator |
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| Publication Number | Publication Date |
|---|---|
| CN102122551A CN102122551A (en) | 2011-07-13 |
| CN102122551B true CN102122551B (en) | 2013-05-08 |
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|---|---|---|---|
| CN 201010003283 Active CN102122551B (en) | 2010-01-07 | 2010-01-07 | Composite insulator |
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| CN (1) | CN102122551B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364615B (en) * | 2011-11-11 | 2012-12-19 | 武汉理工大学 | Method for manufacturing variable-diameter conical composite insulator core pipe |
| CN102646489A (en) * | 2012-03-28 | 2012-08-22 | 江苏昆山通用电气有限公司 | Composite insulator |
| CN103000322B (en) * | 2012-12-05 | 2016-04-06 | 中国西电电气股份有限公司 | High pressure polymeric housed metal oxide arrester forming method |
| CN103123833B (en) * | 2013-02-05 | 2015-07-22 | 宜兴市溢洋墨根材料有限公司 | Overhung composite insulator for supergrid |
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