Embodiment
For the present invention being done further explanation, lift following preferred embodiment and conjunction with figs. and be described in detail as follows:
See also Fig. 1, it is the structural representation of a kind of taper composite insulator 100 that first embodiment of the invention provided.Described taper composite insulator 100 comprises that 10, one in a centerbody is coated on the sheath 11 in these centerbody 10 outsides, and many groups are arranged on the full skirt group 12 in described sheath 11 outsides, and at least one is arranged on the flange 13 of described centerbody 10 1 ends.
Described centerbody 10 is according to the difference of the environment for use of this taper composite insulator 100 and difference, if when this taper composite insulator 100 uses on switch, this centerbody 10 can be insulated tube.If when this taper composite insulator 100 used on post insulator, this centerbody 10 can be solid mandrel, as shown in Figure 2.In the present embodiment, described centerbody 10 is an insulated tube.Described centerbody 10 comprises a large-diameter portion 101 and a minor diameter 102 that is connected with this large-diameter portion 101.The diameter of section of described large-diameter portion 101 is greater than the diameter of section at arbitrary place of described minor diameter 102, and the diameter of section of promptly described large-diameter portion 101 is greater than the averga cross section diameter of described minor diameter 102.In the present embodiment, described large-diameter portion 101 is straight tubular, and described minor diameter 102 is taper.Solid hopkinson bar or hollow stem that described centerbody 10 can be prepared from for the glass fiber yarn that is soaked into by the basis material glue.Described basis material can be epoxy resin or vinyl ester resin.In the present embodiment, described basis material is an epoxy resin.Described glass fiber yarn is the alkali-free silvalin uninterruptedly.When the diameter of this centerbody 10 during less than certain value such as 110mm, it can prepare by pultrude process.When the diameter of this centerbody 10 during greater than a certain value such as 110mm, it can prepare by winding process.Described centerbody 10 is in forming process, and epoxy resin adhesive liquid and glass fiber yarn form epoxy resin-base, i.e. epoxy resin cured product through a series of physicochemical change.Simultaneously, this epoxy resin cured product forms the boundary layer of structure and superior performance between epoxy resin adhesive liquid and glass fiber yarn, this boundary layer is combined into an integral body to glass fibre and epoxide-resin glue, makes the centerbody of being made by this epoxy resin and glass fiber yarn 10 have favorable mechanical performance and electric property.
Described sheath 11 and full skirt group 12 can be made by high-temperature silicon disulfide rubber, auto-vulcanization silicon rubber and liquid curing silicon rubber.In the present embodiment, described sheath 11 and full skirt group 12 are coated on the described centerbody 10 by the high-temperature silicon disulfide rubber integral injection molding.Described sheath 11 is coated on the thing centerbody 10, and has part sheath 11 to be coated on the flange 12, to reach the effect of sealing.High-temperature silicon disulfide rubber is that the polysiloxane (being rubber) of HMW (molecular weight is generally 400,000~800,000) adds reinforced filling and other various additives, the employing organic peroxide is a vulcanizing agent, and at high temperature interlinkage becomes a kind of rubber, and this rubber abbreviates silicon rubber as.The reinforced filling of high-temperature silicon disulfide rubber can be white carbon, and it can make the intensity of silicon sulfide increase by ten times.Add various additives and mainly be the cost that reduces glue, improve properties of rubber and give the various properties of silicon sulfide such as fire-retardant, conduction etc.In the present embodiment, described high-temperature silicon disulfide rubber includes with the lower part to be formed: 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 ethylene rubber 20%~50%, white carbon 20~40%, aluminium hydroxide 25%~50%, silicone oil 2%~5%, vulcanizing agent 1%.
Described full skirt group 12 is in order to increase creepage distance to prevent creepage generation, and it comprises first a full skirt group 121 that is arranged on described large-diameter portion 101 outsides, and second a full skirt group 122 that is arranged on described minor diameter 102 outsides.Described first, second full skirt group 121,122 can comprise the umbrella body that a plurality of skirt length differ, and also can include only a umbrella body.What also need further explanation here is that as shown in Figure 1, described " skirt is long " is meant that the edge of the arbitrary umbrella body in first, second full skirt group 121,122 is to sheath 11 outer field ultimate ranges.In the present embodiment, described first, second full skirt group 121,122 comprises that all two are provided with and the long inconsistent umbrella body of skirt at interval, the long proportional control of skirt of each umbrella body is in certain scope in each group, helps avoiding under the condition of drenching with rain the adjacent minute bridge network between the umbrella body.The skirt length of the umbrella body of the described first full skirt group 121 is long less than the skirt of the corresponding umbrella body of the described second full skirt group 122.For example, the skirt length of the gamp body of the described first full skirt group 121 is 62 millimeters, and the skirt length of umbellule body is 54 millimeters, and the skirt length of the gamp body of the second full skirt group 122 is 70 millimeters, and the skirt length of umbellule body is 52 millimeters.Here also it should be explained that, described " corresponding " is meant because the skirt of each umbrella body in first, second full skirt group 121,122 is long inconsistent, after the umbrella body in first, second full skirt group 121,122 is carried out the skirt long array, the long bigger umbrella body of skirt is corresponding with the long bigger umbrella body of skirt in the second full skirt group 122 in the first full skirt group 121, and the long less umbrella body of skirt is corresponding with the long less umbrella body of skirt in the second full skirt group 122 in the first full skirt group 121.What certainly expect is, when in described first, second full skirt group 121,122 every group when comprising more a plurality of umbrella body, for example, three, in the time of five, the umbrella body of its institute " corresponding " also is after a plurality of umbrella bodies in first, second full skirt group 121,122 are carried out the skirt long array, and then, compare thereby carry out corresponding umbrella body with the skirt progress row correspondence of same position.Be understandable that described taper composite insulator 100 can comprise a plurality of first, second full skirt groups 121,122, also can only comprise each first, second full skirt group 121,122.When described taper composite insulator 100 comprised a plurality of first, second full skirt group 121,122, these a plurality of first, second full skirt groups 121,122 can be one-body molded, also can distinguish moulding, is bonded in the outside of sheath 11 then by viscose glue.
Described flange 13 by a pedestal 131, one be arranged at pedestal 131 an end and with the pedestal 131 vertical cannula portion that link to each other 132, and at least one is connected with the reinforcement 133 between pedestal 131 and cannula portion.
Described pedestal 131 can be one-body molded with cannula portion 132, and also can be fixed by methods such as welding links together.Described pedestal 131 comprises a plurality of fixing holes 134 that are arranged on this pedestal 131, and this fixing hole 134 is used for this composite hollow insulator 100 by bolt (figure do not show) and other device, and as lightning arrester, switch etc. link together.Described cannula portion 132 is used for sheathed fixed insulation pipe 10.
Compared with prior art, the skirt length of each umbrella body of the first full skirt group that is provided with on the large-diameter portion of described taper composite insulator is long less than the skirt of each umbrella body of the second full skirt group that is provided with on the minor diameter, the skirt of each umbrella body that has promptly reduced the first full skirt group on the large-diameter portion is long, it is long perhaps to have increased on the minor diameter skirt of each umbrella body of the second full skirt group, because the diameter of section of minor diameter is less than the diameter of section of large-diameter portion, so the long material increase that increase caused of each umbrella body skirt of the second full skirt group will be far smaller than each umbrella body skirt of the first full skirt group long reduce the material economy amount that caused, thereby can reach the consumption that reduces material, and then reduce cost.In addition,, can reduce the height of mould, reduce the processing capacity of mould, thereby further reduced cost because long the reducing of the skirt of each umbrella body of the first full skirt group of this taper composite insulator make when the mould of this taper composite insulator is made in preparation.
See also Fig. 3, it is the structural representation of the taper composite insulator 200 that second embodiment of the invention provided.Described taper composite insulator 200 comprises that 20, one in a centerbody is coated on the sheath 21 in these centerbody 20 outsides, and many groups are arranged on the full skirt group 22 in described sheath 21 outsides, and at least one is arranged on the flange 23 of described centerbody 20 1 ends.
Described centerbody 20 comprises a large-diameter portion 201 and a minor diameter 202.The taper composite insulator 200 of second embodiment and first embodiment's is basic identical, and difference only is that the large-diameter portion 201 of described centerbody 20 is taper, and described minor diameter 202 is straight tubular.This kind taper composite insulator 200 installation of can standing upside down.
Described full skirt group 22 comprises the first full skirt group 221 at least one large-diameter portion that is arranged on described taper 201, and at least one is arranged on the second full skirt group 222 on the described straight-cylindrical minor diameter 202.Be similar to first embodiment, the skirt length of each full skirt of the described first full skirt group 221 is long less than the skirt of corresponding each full skirt of described second skirt group 222.
The parameter of other elements and each element, material are identical with first embodiment, here just repeat no more.
See also Fig. 4, be the structural representation of the taper composite insulator 300 that third embodiment of the invention provided.Described taper composite insulator 300 comprises that 30, one in a centerbody is coated on the sheath 31 in these centerbody 30 outsides, and many groups are arranged on the full skirt group 32 in described sheath 31 outsides, and at least one is arranged on the flange 33 of described centerbody 30 1 ends.
Described centerbody 30 comprises a large-diameter portion 301 and a minor diameter 302.Described centerbody 30 integral body are a bullet, and the division of described large-diameter portion 301 and minor diameter 302 is according to designing as parameters such as creepage distance, manufacturing process.
Described full skirt group 32 comprises the first full skirt group 321 at least one large-diameter portion that is arranged on described taper 301, and at least one is arranged on the second full skirt group 322 on the described straight-cylindrical minor diameter 302.Be similar to first embodiment, the skirt length of each full skirt of the described first full skirt group 321 is long less than the skirt of corresponding each full skirt of described second skirt group 322.
The parameter of other elements and each element, material are identical with first embodiment, here just repeat no more.
In addition, those skilled in the art can also do other variation in the 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.