CN103247396A - Hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors - Google Patents
Hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors Download PDFInfo
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- CN103247396A CN103247396A CN2010101941432A CN201010194143A CN103247396A CN 103247396 A CN103247396 A CN 103247396A CN 2010101941432 A CN2010101941432 A CN 2010101941432A CN 201010194143 A CN201010194143 A CN 201010194143A CN 103247396 A CN103247396 A CN 103247396A
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- combined insulator
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Abstract
A hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors comprises an insulation tube, a sheath coated on the outer side of the insulation tube, and at least one parachute skirt arranged on the outer side of the sheath. The maximal internal diameter of the insulation tube is between 195 millimeters and 239 millimeters. Since the internal diameter of the hollow composite insulator is less than that of a conventional hollow composite insulator, experimental results show that the hollow composite insulator with the insulation tube of which the maximal internal diameter is between 195 millimeters and the 239 millimeters can completely meet various performances required by 126 KV, 145 KV and 170 KV mutual inductors, so that the material usage amount and the processing time are reduced, especially, the winding complexity and the cutting allowance are reduced, and the manufacturing cost of the hollow composite insulator is lowered greatly.
Description
Technical field
The present invention relates to a kind of electrical circuitry equipment equipment, particularly relate to a kind of 126KV, 145KV, 170KV instrument transformer hollow combined insulator that is used in the power industry High-Voltage Electrical Appliances.
Background technology
Along with the needs of the development of power industry, particularly extra-high voltage electric transmission and transformation, more and more for the demand of composite insulator.The hollow insulator of common outdoor use is generally porcelain insulator, and is of poor quality because the porcelain insulator resistant is dodged ability, easily broken in transportation and the installation process, and needs periodic cleaning in use, gives to install and use has brought a lot of inconvenience.For addressing this problem, the electrical circuitry equipment industry has been developed traditional hollow combined insulator.Traditional 126KV, 145KV, 170KV instrument transformer use hollow combined insulator as a kind of novel insulator, it comprises an insulated tube, a sheath that is coated on this insulated tube outside, at least one is coated on the full skirt in this sheath outside, and the flange that is arranged on described insulated tube two ends.The insulated tube of this hollow combined insulator is by basis material, and the glass fiber yarn that is immersed in this basis material is made.This 126KV, 145KV, 170KV instrument transformer with hollow insulator in order to guarantee its absolute reliability service, it is all very big that its internal diameter designs mostly, internal diameter as the hollow combined insulator of present use mostly is 248 millimeters, and through the use of decades, industry thinks that mostly 248 millimeters is the standard value that 126KV, 145KV, 170KV instrument transformer are used hollow combined insulator.But the insulated tube of hollow combined insulator generally all is to make by winding process.In winding process, what of the complexity, material usage, process time of winding process and cutting surplus the internal diameter of the insulated tube of hollow combined insulator determined.Therefore, existing hollow combined insulator with 248 millimeters can cause very big winding complexity, too much material usage and process time, and more cut surplus, thus cause the cost of hollow combined insulator to rise.
Summary of the invention
In view of this, be necessary 126KV, the 145KV, the 170KV instrument transformer hollow combined insulator that provide a kind of internal diameter less.
A kind of 126KV, 145KV, 170KV instrument transformer hollow combined insulator, it comprises an insulated tube, a sheath that is coated on this insulated tube outside, and at least one is arranged on the full skirt in this sheath outside.The maximum inner diameter of described insulated tube is between 195 millimeters to 239 millimeters.
Compared with prior art, because the minimizing of the internal diameter of above-mentioned hollow combined insulator, and the experiment proved that, the hollow combined insulator that has maximum inner diameter and be 195 millimeters to 239 millimeters insulated tube can meet 126KV, 145KV, the desired every performance of 170KV instrument transformer fully, thereby make its material usage, all be reduced process time, particularly twines complexity and the minimizing of cutting surplus, greatly reduces the manufacturing cost of hollow combined insulator.
Description of drawings
A kind of 126KV, the 145KV that Fig. 1 provides for first embodiment of the invention, 170KV instrument transformer are with the structural representation of straight tubular hollow combined insulator.
Fig. 2 is the structural representation that a kind of 126KV provided by the invention, 145KV, 170KV instrument transformer are used the taper hollow combined insulator.
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, its a kind of 126KV, 145KV that provides for first embodiment of the invention, the 170KV instrument transformer structural representation of hollow combined insulator 100.Described hollow combined insulator 100 comprises that 10, one of insulated tubes are coated on the sheath 11 in these insulated tube 10 outsides, and at least one is arranged on the full skirt 12 of described sheath 11, and at least one is arranged on the flange 13 of described insulated tube 10 1 ends.
The function of instrument transformer is that high voltage or big electric current scaling transformation are become standard low-voltage (100V) or the little electric current of standard (5A or 1A all refer to rated value), in order to realize standardization, the miniaturization of measuring instrument, protection equipment and automatic control equipment.Instrument transformer also can be used to separate high-voltage system, to guarantee the safety of the person and equipment.
Described insulated tube 10 is composited by glass fiber yarn and the basis material as reinforcing material.Described basis material can be epoxy resin, vinyl ester resin, or polyurethane resin.In the present embodiment, described basis material is epoxy resin.In the forming process of this insulated tube 10, epoxy resin adhesive liquid meeting and glass fiber yarn form 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 fiber yarn and epoxide-resin glue, makes the insulated tube of being made by this epoxy resin and glass fiber yarn 10 have favorable mechanical performance and electric property.Described glass fiber yarn can be the uninterrupted organdy of alkali-free, and this glass fiber yarn accounts for 70%～80% of insulated tube 10 total weights, and in the present embodiment, glass fiber yarn accounts for 78% of insulated tube 10 total weights.Because this insulated tube 10 is straight tubular, it has consistent internal diameter, so the maximum inner diameter of this insulated tube 10 is exactly the internal diameter of this insulated tube 10.The inner diameter D of this insulated tube 10 can be between 195 millimeters to 239 millimeters.In the present embodiment, the inner diameter D of described insulated tube 10 is 200 millimeters.Be that 200 millimeters insulated tube 10 is that sample is done mechanical test with inner diameter D below, by the checking of this mechanical test, think that inner diameter D is the mechanical performance requirement that 200 millimeters insulated tube 10 can satisfy 126KV, 145KV, 170KV instrument transformer.
Described sheath 11 and full skirt 12 all are coated on the described insulated tube 10 by the high-temperature silicon disulfide rubber integral injection molding, and wherein sheath 11 is arranged between insulated tube 10 and the full skirt 12.What can expect certainly is that described sheath 11 also can be made respectively with full skirt 12, and then combines.Described sheath 11 is coated on the whole insulated tube 10, and has part sheath 11 can be coated on the flange 13, also can be embedded between described flange 13 and insulated tube 10.In this enforcement body, the end of described sheath 11 is embedded between described flange 13 and insulated tube 10.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 abbreviates silicon rubber as.The reinforced filling of high-temperature silicon disulfide rubber can be white carbon, and it can make the intensity of vulcanizate 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 vulcanizate 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 vinyl silicone rubber 20%～50%, white carbon 10～50%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.
Described full skirt 12 comprises at least one first full skirt 121, second full skirt 122 that at least one and first full skirt 121 arrange at interval.In the present embodiment, described second full skirt 122 comprises two.What can expect is that as required, this first full skirt 121 or second full skirt 122 can be for a plurality of.A described full skirt 121 and two second full skirts 122 arrange at interval.Described first full skirt 121, second full skirt 122 have different skirts long, and for example the skirt of first full skirt 121 is grown up long in the skirt of second full skirt 122.Certainly be also contemplated that described full skirt 12 is not limited to include only described first, second full skirt 121,122, can also comprise the more skirts little different full skirt of growing up.And this first, second full skirt 121,122 arrangement mode also are not limited to above-mentioned arrangement mode, and other arrangement mode arbitrarily can be arranged.Preferably, the long L of the skirt of described second full skirt 122
2With the long L of the skirt of first full skirt 121
1Ratio be 60%L
1≤ L
2≤ 90%L
1.The inclined angle alpha of the upper surface of described first full skirt 121 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 first full skirt 121 is 8 °, and the lower surface angle of inclination beta is 5 °.The inclination angle of the upper and lower surface of described second full skirt 122 can be identical with the inclination angle of first full skirt 121.With the inclination angle control of described first, second full skirt 121,122 upper and lower surface in certain limit, be conducive to improve the self-cleaning of each full skirt, and first, second full skirt 121, the long proportional control of 122 skirt are conducive to avoid the bridge network between the adjacent full skirt under the condition of drenching with rain in certain scope.Be understandable that described hollow combined insulator 100 can comprise a plurality of full skirts 12, also can only have one.When described hollow combined insulator 100 comprised a plurality of full skirt 12, these a plurality of full skirts 12 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 hollow combined insulator 100 is passed through bolt (not shown) and other device, and as lightning arrester, switch etc. link together.Described cannula portion 132 is used for sheathed fixed insulation pipe 10.
See also Fig. 2, its a kind of 126KV, 145KV that provides for second embodiment of the invention, the 170KV instrument transformer structural representation of hollow combined insulator 200.Described 126KV, 145KV, 170KV instrument transformer comprise an insulated tube 20 with hollow combined insulator 200, a sheath 21 that is coated on these insulated tube 20 outsides, at least one is arranged on the full skirt 22 of described sheath 21, and two flanges 23 that are arranged on described insulated tube 20 two ends.
The difference of the described hollow combined insulator 200 of second embodiment and first embodiment only is that described insulated tube 20 is the taper insulated tube.In the design of taper insulated tube, because its end with maximum gauge need be equipped with other components and parts, as radome etc., and by this end with maximum gauge this hollow combined insulator 200 is assembled to other devices and gets on, as voltage transformer etc.Therefore an end of the maximum gauge of this taper insulated tube has the effect that determines these hollow combined insulator 200 suitable which electric pressures, and also therefore the maximum gauge of hollow combined insulator 200 is its difference parameters.In the present embodiment, the maximum gauge of described hollow combined insulator 200 is 195 millimeters.Be the checking of mechanical test of 195 millimeters hollow combined insulator 200 by this maximum gauge, think that maximum inner diameter D is the performance requirement that 195 millimeters insulated tube 10 can satisfy 126KV, 145KV, 170KV instrument transformer.
Compared with prior art, because the minimizing of the inner diameter D of hollow combined insulator, and the experiment proved that, this hollow combined insulator that has maximum inner diameter D and be 195 millimeters to 239 millimeters insulated tube can meet 126KV, 145KV, the desired every performance of 170KV instrument transformer fully, thereby make its material usage, all be reduced process time, particularly twines complexity and the minimizing of cutting surplus, greatly reduces the manufacturing cost of hollow combined insulator.
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.
Claims (8)
1. a 126KV, 145KV, 170KV instrument transformer hollow combined insulator, comprise an insulated tube, a sheath that is coated on this insulated tube outside, and at least one is arranged on the full skirt in this sheath outside, and it is characterized in that: the maximum inner diameter of described insulated tube is between 195 millimeters to 239 millimeters.
2. 126KV as claimed in claim 1,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described insulated tube comprises glass fiber yarn and basis material.
3. 126KV as claimed in claim 3,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described basis material is vinyl ester resin.
4. 126KV as claimed in claim 3,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described basis material is epoxy resin.
5. 126KV as claimed in claim 3,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described basis material is polyurethane resin.
6. 126KV as claimed in claim 1,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described sheath and full skirt are made by high-temperature silicon disulfide rubber.
7. 126KV as claimed in claim 1,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described sheath and full skirt are made by room temperature vulcanized silicone rubber.
8. 126KV as claimed in claim 1,145KV, 170KV instrument transformer hollow combined insulator, it is characterized in that: described sheath and full skirt are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101941432A CN103247396A (en) | 2010-05-24 | 2010-05-24 | Hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101941432A CN103247396A (en) | 2010-05-24 | 2010-05-24 | Hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors |
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| Publication Number | Publication Date |
|---|---|
| CN103247396A true CN103247396A (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101941432A Pending CN103247396A (en) | 2010-05-24 | 2010-05-24 | Hollow composite insulator for 126 KV, 145 KV and 170 KV mutual inductors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935332A (en) * | 2017-03-08 | 2017-07-07 | 河南省德立泰高压电瓷电器有限公司 | A kind of arrestor porcelain bushing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213147A (en) * | 1996-02-01 | 1997-08-15 | Ngk Insulators Ltd | Composite insulator tube with enhanced resistance against moisture permeation |
| CN101000816A (en) * | 2006-01-14 | 2007-07-18 | 南通市神马电力科技有限公司 | Reducing diameter high voltage hollow composite insulator and its manufacturing method |
| CN101113230A (en) * | 2007-08-08 | 2008-01-30 | 华南理工大学 | Method for preparing unsaturated polyester cross-linking waste mold plastic |
| CN201877227U (en) * | 2010-05-24 | 2011-06-22 | 南通市神马电力科技有限公司 | Hollow composite insulator for 126kV, 145 kV and 170 kV mutual inductors |
-
2010
- 2010-05-24 CN CN2010101941432A patent/CN103247396A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213147A (en) * | 1996-02-01 | 1997-08-15 | Ngk Insulators Ltd | Composite insulator tube with enhanced resistance against moisture permeation |
| CN101000816A (en) * | 2006-01-14 | 2007-07-18 | 南通市神马电力科技有限公司 | Reducing diameter high voltage hollow composite insulator and its manufacturing method |
| CN101113230A (en) * | 2007-08-08 | 2008-01-30 | 华南理工大学 | Method for preparing unsaturated polyester cross-linking waste mold plastic |
| CN201877227U (en) * | 2010-05-24 | 2011-06-22 | 南通市神马电力科技有限公司 | Hollow composite insulator for 126kV, 145 kV and 170 kV mutual inductors |
Non-Patent Citations (1)
| Title |
|---|
| 邱志贤: "高压复合绝缘子及其应用", 《中国电力出版社》, 31 January 2006 (2006-01-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935332A (en) * | 2017-03-08 | 2017-07-07 | 河南省德立泰高压电瓷电器有限公司 | A kind of arrestor porcelain bushing |
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Application publication date: 20130814 |