CN103345987A - Silicon-fluorine composite insulator with 300KN or 400KN breaking load - Google Patents
Silicon-fluorine composite insulator with 300KN or 400KN breaking load Download PDFInfo
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- CN103345987A CN103345987A CN2013102383831A CN201310238383A CN103345987A CN 103345987 A CN103345987 A CN 103345987A CN 2013102383831 A CN2013102383831 A CN 2013102383831A CN 201310238383 A CN201310238383 A CN 201310238383A CN 103345987 A CN103345987 A CN 103345987A
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Abstract
Provided is a silicon-fluorine composite insulator with a 300KN or 400KN breaking load. The silicon-fluorine composite insulator with the 300KN or 400KN breaking load is composed of a plurality of sections of unit insulators in a connected mode, each section of unit insulator comprises a core rod, a fitting ball socket and a fitting ball head, one end of each core rod is fixedly connected with each fitting ball socket, the other end of each core rod is fixedly connected with each fitting ball head, a plurality of umbrella skirts are arranged on the outer surface of each core rod, the fitting ball head of one section of unit insulator is connected with the fitting ball socket of an adjacent section of unit insulator, and the insulator umbrella skirts arranged on the outer surface of each core rod are made of new materials. The silicon-fluorine composite insulator with the 300KN or 400KN breaking load is convenient to transport, install and construct, can be installed in a combined mode to form the lengths needed by various voltage-class electric power circuits, only damaged sections of unit insulators need to be replaced, maintenance cost is greatly reduced, and the insulator umbrella skirts are made of the invented new materials, and have the advantages of being firm, good in tear resistance, good in tread resistance, good in dirty resistance, good in hydrophobicity, and free of the need of protection and sweeping, ensuring safe reliability of power supply of an electric transmission line, and being used for ultrahigh-voltage electric transmission and transformation lines.
Description
Technical field
The fluosilicic insulator that to the present invention relates to a kind of mechanical failure load be 300kN or 400KN, for supporting on transmission line and hanging wire, and make to keep between wire and shaft tower the material of insulation.
Background technology
The existing century-old history of the application of common insulator and glass insulator on transmission line, the history of composite insulator application is not long, but the time of hanging net operation also has 30 years.Can think, the manufacture of insulator and operation technique are relatively ripe, but still are constantly updating and development.Along with the raising of electric pressure, insulator is had higher requirement.Concerning composite insulator, the problems such as mechanical strength, structure, pressure-equalizing device, visual corona, radio interference, Potential distribution and the large electric arc of power frequency need further research.Therefore, improve reliability and the useful life of insulator, to its material, formula and full skirt shape, need to constantly explore and study.At present, for its length of composite insulator of 750KV transmission line, reached 8.5～9.6 meters, it is the integral type structure.The composite insulator of 9.6 meters of take is example, and the composite insulator of 9.6 meters single length is an integral body, and not only transportation is installed and had difficulty, if a slice full skirt wherein damages, and will be by whole replacing.
Summary of the invention
For the problems referred to above, the fluosilicic insulator that to the purpose of this invention is to provide a kind of failing load be 300KN, 400KN; This fluosilicic insulator is segmentation structure, and its full skirt is used insulation composition to make, and described insulation composition is submitted patent application on the same day in the present invention.
The implementation of the object of the invention is: the fluosilicic composite insulator that a kind of failing load is 300KN, 400KN; It is characterized in that: this fluosilicic insulator is connected to form by the multistage unit insulator; Every segment unit insulator comprises plug, hardware fittings ball and socket and hardware ball-head, and an end of plug is fixedly connected with hardware fittings ball and socket, the other end is fixedly connected with hardware ball-head, and the mandrel outer surface is provided with a plurality of full skirts; The hardware ball-head of adjacent two segment unit insulators is connected with hardware fittings ball and socket.
The insulator umbrella that the mandrel outer surface is provided with is made by the raw material of following weight parts: A component 100 weight portions, B component 80～120 weight portions and C component 200～400 weight portions; Wherein the A component comprises: cyclohexane cyclohexanedimethanodibasic 2-glycidyl ester and flexible-epoxy, and the weight ratio of cyclohexane cyclohexanedimethanodibasic 2-glycidyl ester and flexible-epoxy is 70～90:30～10; The B component comprises: curing agent and promoter, and the weight ratio of curing agent and promoter is 100:1～5; The C component comprises: filler.
Cyclohexane cyclohexanedimethanodibasic 2-glycidyl ester described in the A component is hexahydrophthalic acid bisglycidyl ester or 4,5-7-oxa-bicyclo[4.1.0-1,2-2 dioctyl phthalate 2-glycidyl esters; Described flexible-epoxy is the toughness reinforcing bisphenol A epoxide resin of nbr carboxyl terminal, and the weight ratio of bisphenol A epoxide resin and acrylonitrile-butadiene rubber is 100:12～18; In wherein said acrylonitrile-butadiene rubber, acrylonitrile content is 10～26wt%, and number-average molecular weight is 3400～4000, and average functionality is 1.8～2.3; The epoxide equivalent of described bisphenol A epoxide resin is 160～200; Described bisphenol A epoxide resin is bisphenol A diglycidyl ether.
Curing agent described in the B component is methyl hexahydrophthalic anhydride, and described promoter is tertiary amines promoter or imidazoles promoter; Described tertiary amines promoter is 2,4,6-tri-(dimethylamino methyl) phenol or dimethylaniline; Described imidazoles promoter is glyoxal ethyline or 2-ethyl imidazol(e).
The described filler of C component is at least one in silicon dioxide or aluminium hydroxide; Filler is by the particle of the 38 microns<particle diameter of 5wt%≤48 microns, the particle of the 23 microns<particle diameter of the 80wt%≤particle of 38 microns, the 13 microns<particle diameter of 10wt%≤23 microns, and the mix particles of the particle diameter of 5 wt%≤13 micron is formulated.The C component also should add the percentage by weight metering: one or more in 0.1～1% UV absorbers, 0.1～1% stabilizer, 0.1～1% fire retardant or 0.1～1% coupling agent; Described UV absorbers is the 4-dihydroxy benaophenonel; Described
'sstabilizer is dolomol or zinc stearate; Described fire retardant is magnesium hydroxide or aluminium hydroxide or red phosphorus; Described coupling agent γ-glycidyl ether oxygen propyl trimethoxy silicane or γ aminopropyltriethoxy silane or γ-methacryloxypropyl trimethoxy silane.
The present invention is the preparation method of failing load 300KN and 400KN fluosilicic insulator, comprises the steps:
1, plug is inserted in the centre bore of hardware fittings ball and socket and bulb, then compresses and obtain plug-gold utensil complex; The crimping parameter compressed is the crimping parameter of insulator strength-time graph slope while being 4%, and crimp force is 80～180bar;
2, plug-gold utensil complex is put into to the relevant position in mould;
3, by the A component of above-mentioned insulation composition, B component and C component are mixed, and stir, and then vacuumize, and vacuum degree be-0.06～-0.15Mpa, obtain mixing glue;
4, epoxy glue is injected in mould, injection technique is the automatic pressure gel moulding process, and feed pressure is 0.1-0.4MPa, and feed time is 3-5min; Solidify for the first time, curing temperature is 130～170 ℃, curing time 10～20min;
5, the demoulding; Then solidify for the second time, curing temperature is 110～130 ℃, and curing time, 10～12h, obtained the composite insulator with umbrella cover; Wherein, on the umbrella cover outer surface, with a plurality of full skirts, and umbrella cover covers the outer surface of plug and extends to the gold utensil surface and forms sealing.
The novel insulator that failing load provided by the invention is 300kN and 400KN, for the ehv power transmission circuit, its essence characteristic and advantage is:
The first, connect into the fluosilicic insulator of a failing load 300KN and 400KN with the multistage unit insulator, an insulator is combined by the multistage unit insulator; This unit merogenesis structure, be convenient to transportation and also be convenient to installation, and the unit insulator series connection is used, and installation capable of being combined forms the length that each electric pressure power circuit needs; Only need to change that segment unit insulator damaged, greatly lower maintenance cost;
The second, the new material that insulator umbrella adopts us to invent, compare with existing silicon rubber compound insulator full skirt, has advantages of firm, tear-resistant, anti-trampling; And this insulator and porcelain, glass insulator are relatively, lightweight;
The 3rd, this insulator umbrella resistant is dirty, because insulator umbrella is arranged to the mode that two ends are large, centre two is little, " ice slush-full skirt " air clearance and along the ice creepage distance while having increased icing, the flashover breakdown of having avoided the upper air current arc blow-out to cause, when the insulator series connection is used, the full skirt interval is basically identical, the pollution flashover voltage of whole string fluosilicic insulator is improved, possessed stronger hydrophobicity, do not need the protection cleaning;
The 4th, the hinged installation of this insulator chain type has reduced the power transmission circuit caused by windage angle, has guaranteed the power supply safety reliability of transmission line, is specially adapted to make insulating material in the outdoor high-voltage environment.
The fluosilicic insulator technology parameter that the mechanical failure load of making of fluosilicic insulator umbrella material provided by the invention is 300kN and 400KN is in Table 1.
In table 1, model example: CS400S28B28-400/2200 means that for AC system, suspension type fluosilicic composite insulator, specified mechanical stretching failing load are that 400kN, upper annex ball-and-socket connect, linkage flag 28, lower annex bulb connect, the fluosilicic composite insulator that linkage flag 28, standard lightning impulse withstand voltage 400kV, nominal creepage distance are 2200mm.
The accompanying drawing explanation
The structural representation that Fig. 1 is the present invention's one segment unit fluosilicic insulator;
Fig. 2 is the structural representation that fluosilicic insulator series connection of the present invention is installed.
In figure: 1-hardware fittings ball and socket, 2-plug, 3-fluosilicic full skirt, 4-hardware ball-head, D1-large full skirt diameter, D2-umbellule skirt diameter, H-unit insulator height, A-inclination angle, full skirt edge, the minimum thickness of a-core bar jacket, b-full skirt edge thickness, the end distance of h-two ends full skirt.
Embodiment
As shown in Figure 2: the fluosilicic composite insulator that failing load is 300KN, 400KN; This fluosilicic insulator connects to form (Figure 2 shows that two segment unit insulators connect) by the multistage unit insulator; Referring to Fig. 1: every segment unit insulator comprises plug 2, hardware fittings ball and socket 1 and hardware ball-head 4, and an end of plug 2 is fixedly connected with hardware fittings ball and socket 1, the other end is fixedly connected with hardware ball-head 4, and plug 2 outer surfaces are provided with a plurality of full skirts 3; The hardware ball-head 4 of adjacent two segment unit insulators is connected with hardware fittings ball and socket 1.
Wherein plug 2 is made by glass fibre; Hardware fittings ball and socket 1 and the hardware ball-head 4 at unit insulator two ends are selected the 40Mn2 forged steel; The full skirt 3 of the present embodiment unit insulator is four; The full skirt specification at two ends, left and right is identical, diameter is larger, and the full skirt specification of middle two is identical, diameter is less; Establish large full skirt at the two ends of left and right, be provided with two little full skirts between two large full skirts, with the umbellule skirt, as interval, insulator umbrella hides gold utensil fully.
The large full skirt diameter D1 of the unit insulator of two kinds of specifications is identical, is 198mm, and the umbellule skirt diameter D2 of the unit insulator of two kinds of specifications is identical, is 164mm; Full skirt edge inclination angle A is 10 °, takes full advantage of upper air current power, makes dust-laden contain water flow and separates rapidly with insulator surface, reaches the self-cleaning surface ability; The minimum thickness a of core bar jacket is 6mm, and full skirt edge thickness b is 6mm.
The end distance h that the height H of the unit insulator that failing load is 400KN is 240mm, two ends full skirt is 165mm; The end distance h that the height H of the unit insulator that failing load is 300KN is 205mm, two ends full skirt is 135mm.
The insulator umbrella 3 that plug 2 outer surfaces are provided with is fluosilicic full skirts, by the raw material of following weight parts, is made: A component 1000 grams, B component 1200 grams and C component 3000 grams;
Wherein the A component comprises: hexahydrophthalic acid bisglycidyl ester 800 grams, flexible-epoxy 200 grams; Flexible-epoxy 200 grams comprise bisphenol A diglycidyl ether 170 grams and nbr carboxyl terminal 30 grams; The B component comprises: as methyl hexahydrophthalic anhydride 1150 grams of curing agent and dimethylaniline 50 grams as promoter; The C component comprises: as silicon dioxide 2910 grams of filler; 4-dihydroxy benaophenonel 20 grams as UV absorbers; Dolomol 30 grams as stabilizer; Red phosphorus 15 grams as fire retardant; γ-glycidyl ether oxygen propyl trimethoxy silicane 25 grams as coupling agent; Silica filler is by the particle of the 38 microns<particle diameter of 5wt%≤48 microns, the particle of the 23 microns<particle diameter of the 80wt%≤particle of 38 microns, the 13 microns<particle diameter of 10wt%≤23 microns, and the mix particles of the particle diameter of 5 wt%≤13 micron is formulated.
By A component 1000 grams of above-mentioned insulation composition, B component 1200 grams and C component 3000 grams mix, and stir, and then vacuumize, and vacuum degree is-0.085Mpa to obtain mixed glue;
Epoxy glue is injected in mould, and injection technique is the automatic pressure gel moulding process, and feed pressure is 0.3MPa, and feed time is 5min; Solidify for the first time, curing temperature is 170 ℃, curing time 10min; The demoulding; Then solidify for the second time, curing temperature is 125 ℃, and curing time, 10.5h, obtained the composite insulator with umbrella cover.
The present invention has following characteristics and advantage:
1, guarantee electromechanical failure load, margin of safety 25～35%.
2, the insulator configuration design takes into account electric property and mechanical performance, makes both have optimum performance.
On insulator surface, filthy accumulation is few; Moistening little at insulator surface; Full skirt (dish) is arranged and is creepage than apart from should be at least identical with porcelain, glass insulator, avoided electric arc bridge joint umbrella apart from (rib); Insulator height and suspension type dish type porcelain insulator height at the same level approach, the convenient connection and replacing.
3, full skirt has certain degree of hardness, is installing, is being difficult for trampling on while overhauling.
4, the insulator end hermetically-sealed construction adopts fluosilicic epoxy glue plugging technology: the gold utensil termination, plug and sheath epoxy glue are condensed into a whole end connected mode.
Claims (7)
1. the fluosilicic composite insulator that failing load is 300KN, 400KN; It is characterized in that: this fluosilicic insulator is connected to form by the multistage unit insulator; Every segment unit insulator comprises plug (2), hardware fittings ball and socket (1) and hardware ball-head (4), one end of plug (2) is fixedly connected with hardware fittings ball and socket (1), the other end is fixedly connected with hardware ball-head (4), and plug (2) outer surface is provided with a plurality of full skirts (3); The hardware ball-head of adjacent two segment unit insulators (4) is connected with hardware fittings ball and socket (1).
2. the fluosilicic composite insulator that a kind of failing load as claimed in claim 1 is 300KN, 400KN; It is characterized in that: the full skirt (3) that plug (2) outer surface is provided with is four; Large full skirt is established at the two ends of left and right, is provided with two little full skirts between two large full skirts.
3. the fluosilicic composite insulator that a kind of failing load as claimed in claim 3 is 300KN, 400KN; It is characterized in that: large full skirt diameter (D1) is 198mm, and umbellule skirt diameter (D2) is 164mm.
4. the fluosilicic composite insulator that is 300KN, 400KN as claim 1,2 or 3 described a kind of failing loads; It is characterized in that: inclination angle, full skirt edge (A) is 10 °; The minimum thickness of core bar jacket (a) is 6mm, and full skirt edge thickness (b) is 6mm.
5. the fluosilicic composite insulator that a kind of failing load as claimed in claim 4 is 300KN, 400KN; It is characterized in that: plug (2) is made by glass fibre; Hardware fittings ball and socket (1) is made of the 40Mn2 forged steel with hardware ball-head (4).
6. the fluosilicic composite insulator that a kind of failing load as claimed in claim 5 is 300KN, 400KN; It is characterized in that: the end distance (h) that the height (H) that broken ring load is the unit insulator of 400KN is 240mm, two ends full skirt is 165mm; The end distance (h) that the height (H) that broken ring load is the unit insulator of 300KN is 205mm, two ends full skirt is 135mm.
7. the fluosilicic composite insulator that a kind of failing load as claimed in claim 6 is 300KN, 400KN; It is characterized in that: insulator umbrella is the fluosilicic full skirt, by the raw material of following weight parts, is made: A component 1000 grams, B component 1200 grams and C component 3000 grams; Wherein the A component comprises: hexahydrophthalic acid bisglycidyl ester 800 grams, flexible-epoxy 200 grams; Flexible-epoxy 200 grams comprise bisphenol A diglycidyl ether 170 grams and nbr carboxyl terminal 30 grams; The B component comprises: as methyl hexahydrophthalic anhydride 1150 grams of curing agent and dimethylaniline 50 grams as promoter; The C component comprises: as silicon dioxide 2910 grams of filler; 4-dihydroxy benaophenonel 20 grams as UV absorbers; Dolomol 30 grams as stabilizer; Red phosphorus 15 grams as fire retardant; γ-glycidyl ether oxygen propyl trimethoxy silicane 25 grams as coupling agent; Silica filler is by the particle of the 38 microns<particle diameter of 5wt%≤48 microns, the particle of the 23 microns<particle diameter of the 80wt%≤particle of 38 microns, the 13 microns<particle diameter of 10wt%≤23 microns, and the mix particles of the particle diameter of 5 wt%≤13 micron is formulated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102383831A CN103345987A (en) | 2013-06-17 | 2013-06-17 | Silicon-fluorine composite insulator with 300KN or 400KN breaking load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102383831A CN103345987A (en) | 2013-06-17 | 2013-06-17 | Silicon-fluorine composite insulator with 300KN or 400KN breaking load |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545057A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN103545056A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Composite insulator umbrella-shaped structure |
| CN104952560A (en) * | 2015-07-01 | 2015-09-30 | 国家电网公司 | Anti-thunder and anti-icing suspension type composite insulator for 10 kV transmission line |
| CN106677595A (en) * | 2016-11-22 | 2017-05-17 | 常熟风范电力设备股份有限公司 | Three-pipe type flexible composite insulated cross arm |
| CN110136898A (en) * | 2019-04-09 | 2019-08-16 | 广东科技学院 | A kind of spliced insulator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322363A (en) * | 1998-08-07 | 2001-11-14 | 西门子公司 | Isolator |
| CN2525651Y (en) * | 2001-12-25 | 2002-12-11 | 石家庄市电瓷有限责任公司 | Anti-tension organic composite insulator series |
| CN1753107A (en) * | 2005-09-13 | 2006-03-29 | 宋福如 | Equalizing synthetic insulator |
| CN201489922U (en) * | 2009-04-16 | 2010-05-26 | 陈润修 | Embedded segmented connecting composite insulator |
| CN102942767A (en) * | 2012-12-06 | 2013-02-27 | 及荣军 | Insulation composition as well as insulation material, shed and insulator using same, and manufacturing method thereof |
| US20130075138A1 (en) * | 2011-09-22 | 2013-03-28 | Li-Chih Yu | Halogen-free resin composition and copper clad laminate and printed circuit board using same |
| CN203433910U (en) * | 2013-06-17 | 2014-02-12 | 甘肃省电力公司检修公司 | Silicon-fluorine composite insulator with failure load being 300KN or 400KN |
-
2013
- 2013-06-17 CN CN2013102383831A patent/CN103345987A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322363A (en) * | 1998-08-07 | 2001-11-14 | 西门子公司 | Isolator |
| CN2525651Y (en) * | 2001-12-25 | 2002-12-11 | 石家庄市电瓷有限责任公司 | Anti-tension organic composite insulator series |
| CN1753107A (en) * | 2005-09-13 | 2006-03-29 | 宋福如 | Equalizing synthetic insulator |
| CN201489922U (en) * | 2009-04-16 | 2010-05-26 | 陈润修 | Embedded segmented connecting composite insulator |
| US20130075138A1 (en) * | 2011-09-22 | 2013-03-28 | Li-Chih Yu | Halogen-free resin composition and copper clad laminate and printed circuit board using same |
| CN102942767A (en) * | 2012-12-06 | 2013-02-27 | 及荣军 | Insulation composition as well as insulation material, shed and insulator using same, and manufacturing method thereof |
| CN203433910U (en) * | 2013-06-17 | 2014-02-12 | 甘肃省电力公司检修公司 | Silicon-fluorine composite insulator with failure load being 300KN or 400KN |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545057A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN103545056A (en) * | 2013-10-28 | 2014-01-29 | 新疆新能天宁电工绝缘材料有限公司 | Composite insulator umbrella-shaped structure |
| CN103545056B (en) * | 2013-10-28 | 2016-08-24 | 新疆新能天宁电工绝缘材料有限公司 | A kind of umbrella structure of composite insulator |
| CN103545057B (en) * | 2013-10-28 | 2017-03-15 | 新疆新能天宁电工绝缘材料有限公司 | Umbrella-shaped structure of ultra-high-voltage tension composite tension insulator |
| CN104952560A (en) * | 2015-07-01 | 2015-09-30 | 国家电网公司 | Anti-thunder and anti-icing suspension type composite insulator for 10 kV transmission line |
| CN106677595A (en) * | 2016-11-22 | 2017-05-17 | 常熟风范电力设备股份有限公司 | Three-pipe type flexible composite insulated cross arm |
| CN110136898A (en) * | 2019-04-09 | 2019-08-16 | 广东科技学院 | A kind of spliced insulator |
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Application publication date: 20131009 |