CN105469957B - Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History - Google Patents

Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History Download PDF

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Publication number
CN105469957B
CN105469957B CN201510993987.6A CN201510993987A CN105469957B CN 105469957 B CN105469957 B CN 105469957B CN 201510993987 A CN201510993987 A CN 201510993987A CN 105469957 B CN105469957 B CN 105469957B
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China
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capacitor core
insulating layer
vacuum
conservator
oil
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CN105469957A (en
Inventor
孙闻峰
孙强
孙永林
张惠哲
屈艳婷
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Nanjing Electric High Voltage Bushing Co Ltd
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Nanjing Electric High Voltage Bushing Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/321—Insulating of coils, windings, or parts thereof using a fluid for insulating purposes only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulators (AREA)

Abstract

The invention discloses vacuum glue to soak fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, including voltage equalizing ball, capacitor core, full skirt, flange, conservator, terminal plate, capacitor core is cylinder, capacitor core is internally provided with central conductor leader, alternating packets are around insulating layer and aluminium foil on the outside of central conductor leader, upper insulating layer is equipped with the outside of capacitor core, lower insulating layer, upper insulating layer connects full skirt by epoxy resin, the flange is arranged in the middle part of capacitor core, flange side is equipped with air relief cock, conservator is arranged on above full skirt, terminal plate is arranged on above conservator, voltage equalizing ball is arranged on capacitor core the latter half, the present invention is prepared by science, capacitor core insulation performance is high；Insulating layer instead of original frangible insulator, with good antidetonation and explosion prevention function, casing uses all-sealed structure, transformer oil is filled inside it, prevents insulation ag(e)ing, is had light-weight, easily transport and installation, high mechanical strength, it is not easy to broken, surface hydrophobicity, the advantages of resistance to pollution flashover ability is strong, service life is long.

Description

Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History
Technical field
The invention belongs to technical field of electric equipment, and in particular to vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History.
Background technology
With the fast development of China's economy, the scale of power grid constantly expands, and influences the not true of safe operation of power system Determine factor and potential risk increases therewith, thus user is higher and higher to the security reliability and quality requirement of supply of electric power, high Pressing sleeve pipe is mainly used for high-voltage electrical equipment and connects to draw link, and restricts equipment reliability of operation, existing domestic bushing, Antidetonation poor in anti-explosion property, if cannot find that inside pipe casing defect or maintenance are improper in time, easily occurs insulation damages and even hits Explosion accident is worn, service life is not grown, and it is short to replace maintenance period.
The content of the invention
To solve the above problems, the invention discloses vacuum glue to soak fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, it is light-weight, easily Transport and installation, high mechanical strength, it is not easy to which broken, manufacturing process is simple, has surface hydrophobicity, and resistance to pollution flashover ability is strong, few Safeguard, there is good antidetonation and explosion prevention function.
To reach above-mentioned purpose, technical scheme is as follows：
Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, it is characterised in that：Including voltage equalizing ball, capacitor core, full skirt, Flange, conservator, terminal plate, the capacitor core are cylinder, and capacitor core is internally provided with central conductor leader, the center conductive Alternating packets are equipped with upper insulating layer, lower insulating layer on the outside of insulating layer and aluminium foil, capacitor core on the outside of bar, and the upper insulating layer passes through Epoxy resin connects full skirt, and the flange is arranged in the middle part of capacitor core, and flange side is equipped with air relief cock, and the conservator is arranged on Above full skirt, conservator is equipped with fuel feed hole, and the terminal plate is arranged on above conservator, and the voltage equalizing ball is arranged under capacitor core Half part.
As a modification of the present invention, the conservator is equipped with oil level indicating gage.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, comprises the following steps：
（1）Capacitor core rolls；
（2）Capacitor core is dried in vacuo；
（3）Upper insulating layer, lower insulating layer, full skirt make；
（4）Casing general assembly；
（5）Bobbin seal is tested；
（6）Vacuum oil immersion；
（7）Test to casing.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（1）Described in capacitance core Son roll be by cable paper and aluminium foil using central conductor leader be concentric cylindrical into series capacitor, cable thickness of paper is 0.08- 0.15mm paper tapes, 2-10 layers are rolled in the way of the crimping of circulation 50%, are brushed one layer of resin and then are covered last layer 0.1-0.15mm After aluminium foil circulation overlap joint, it is that completion rolls alternately and repeatedly to operate until rolling defined design size.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（2）Described in capacitance core Son vacuum drying is put into capacitor core to be dried in the container of one vacuum-pumping, first to this container vacuum-pumping, vacuum Degree makes product be in certain vacuum state, temperature in the container of vacuum then is heated to 90-100 DEG C between 0-40Pa, Keep the temperature 1-3h.
The capacitor core vacuum drying refers to the moisture in capacitor core to be excluded, and improves the electric property of product, Since capacitor core is in negative pressure in container, air is discharged so pressure enters in the hole of capacitor core, and be in high temperature Environment clearing damp efficiency greatly improve.
Aridity reference value is shown in Table 1 in capacitor core：
The sorption data of 1 wood pulp of table
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（3）Described in upper insulation Layer, lower insulating layer make, and glass fibre direct impregnation resin is carried out bidirectional crossed winding, until defined size is wound into, Glass fibre intersecting angle is 90 °, after the completion of be put into 120-140 DEG C of baking oven and carry out curing and form, have in fiberglass insulation Steel is touched tool and is demoulded, and forms the sheath with certain wall thickness；Full skirt passes through the high temperature vulcanized machine sulfidization molding of silicon rubber, vulcanization 110-130 DEG C of temperature, vulcanization time 30-40min.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（4）Described in casing it is total Dress, first fixes capacitor core vertically, and lower end set loads insulating layer, mounting flange, and upper end set loads onto insulating layer, flange with Upper and lower insulation interlayer is sealed by seal washer, and bolt is fixed, installation voltage equalizing ball, upper insulating layer upper end below capacitor core Conservator, oil level indicating gage, terminal plate are installed, applies 0.5-0.8 tons of pressure clamping screws and is fixed.
It is exactly tubular fuel reserve tank above transformer that the effect of conservator, which is, during work, and transformer is since load increases, oil temperature Raising, oil expansion in fuel tank, at this moment excessive oil will flow into conservator, and when temperature reduces, the oil in conservator can flow into fuel tank again, Play the role of adjust automatically pasta, conservator is divided into three kinds of corrugated, capsule-type, diaphragm type forms, there is ripple expansion, capsule-type Two kinds.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（5）Described in casing it is close Testing sealing is to applying 0.2-0.3Mpa nitrogen pressures in test product, and maintaining 1-1.5h, and each sealing surface of test product is existing without any leakage As being that this experiment passes through.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（6）Described in Vaccum Permeating Oil refers to step（5）Product afterwards is put into vacuum-pumping container, and first to this container vacuum-pumping, vacuum is in 1333- 3999.6Pa（10-30mmHg）Between, product is in certain vacuum state, then by 40-80 DEG C of oil injection capacitance core Son.
Since product is in negative pressure, so the specially treated good 10GBX transformer oil of injection can be with very big Pressure enters in the hole of capacitor core, and vacuum oil immersion is conducive to all interconnected pores of oil saturated, and immersion oil speed improves 50%.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, step（7）Described in casing Test, inspection result is as follows：
Table 2：Casing oiliness can recommend reference value
Table 3：Casing oiliness can actual control table
It was found from table 2 and table 3, oily breakdown voltage, high-temperature medium, water content and the dissolved gas content of described sleeve pipe Energy controlling value is all lower than standard recommendation reference value, also just illustrates that casing oiliness energy control ratio standard requirement when dispatching from the factory is stringent.
Performance test：Test method and capital equipment requirement：
1st, using instrument：2500v insulation measurement instrument
2nd, measurement request：The exhausted resistance of major insulation；The flat exhausted resistance in condenser bushing end
Atmospheric conditions：
Temperature:26 ℃
Relative humidity：65%
First, product nominal parameter
System nominal voltage kV（Virtual value） Nominal voltage of a system kV（Virtual value） Product rated current A
126 110 1250
2nd, insulate resistance test
3rd, insulation resistance test
4th, dielectric dissipation factor test, capacitance test:
Apply voltage kV Dielectric loss tan δ % Capacitance pF
10 0.330 542
77 0.330 542
126 0.330 542
5th, partial discharge quantity is tested
Apply voltage Test voltage kV Partial discharge quantity Partial discharge pC
77 4
126 9
6th, leakage test：0.2MPa/15min air seals are tested, and are passed through.
The beneficial effects of the invention are as follows：
Vacuum glue of the present invention soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, and capacitor core is by insulating paper aluminium foil electricity The concentric cylindrical series capacitor that pole is wound on conducting rod, it is vacuum dried to uniform electric field, after immersion oil processing It is high as the high paper oil insulation body of electric property, insulation performance；Insulating layer is twined using glass fiber impregnated resin is bidirectional crossed Around into instead of original frangible insulator, there is good antidetonation and explosion prevention function, while insulating layer is as external insulation, energy Capacitor core is protected, the spacer flanger of casing is equipped with air relief cock, discharges the remaining gas of power transformer enclosure；Casing is using complete Sealing structure, is filled with specially treated good 10GBX transformer oil inside it, the capacitor core of casing completely not with air Communicate, inside pipe casing can be immersed to avoid the nuisance in the irradiation and air of sunlight, and make insulation ag(e)ing, all connectors are not Climate influences, and has light-weight, easily transport and installation, high mechanical strength, it is not easy to which broken, manufacturing process is simple, and surface is hated It is water-based, the advantages of resistance to pollution flashover ability is strong, service life is long.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is capacitor core schematic diagram of the present invention.
Reference numerals list：
1st, voltage equalizing ball, 2, capacitor core, 3, full skirt, 4, flange, 5, conservator, 6, terminal plate, 7, central conductor leader, 8, insulation Layer, 9, aluminium foil, 10, upper insulating layer, 11, lower insulating layer, 12, epoxy resin, 13, air relief cock, 14, fuel feed hole, 15, oil level instruction Meter.
Embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following embodiments are only For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description, " rear ", "left", "right", "up" and "down" refer to the direction in attached drawing, and word " interior " and " outer " refer respectively to direction or remote From the direction of particular elements geometric center.
As shown in the figure, vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History of the present invention, including voltage equalizing ball 1, electricity Hold fuse 2, full skirt 3, flange 4, conservator 5, terminal plate 6, the capacitor core 2 is cylinder, and capacitor core 2 is internally provided with center Conducting rod, the 77 outside alternating packets of central conductor leader are equipped with upper insulating layer around insulating layer 8 and aluminium foil 9, the outside of capacitor core 2 10th, lower insulating layer 11, the upper insulating layer 10 connect full skirt 3 by epoxy resin 12, and the flange is arranged in capacitor core 2 Portion, flange side are equipped with air relief cock 13, and the conservator 5 is arranged on the top of full skirt 3, and conservator 5 is equipped with fuel feed hole 14, the wiring Plate 6 is arranged on the top of conservator 5, and the voltage equalizing ball 1 is arranged on 2 the latter half of capacitor core, and the conservator is indicated equipped with oil level Meter 15.
The preparation method of the vacuum glue leaching fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, comprises the following steps：
（1）Capacitor core rolls：Using central conductor leader it is concentric cylindrical into series capacitor, electricity by cable paper and aluminium foil Cable thickness of paper is 0.12mm paper tapes, and 6 layers are rolled in the way of the crimping of circulation 50%, brushes one layer of resin and then covers last layer 0.1mm After aluminium foil circulation overlap joint, it is that completion rolls alternately and repeatedly to operate until rolling defined design size；
（2）Capacitor core is dried in vacuo：Capacitor core 2 is put into the container of vacuum-pumping, this container is taken out first true Sky, vacuum make product be in vacuum state in 20Pa, and temperature in the container of vacuum then is heated to 95 DEG C, keep the temperature 2h；
（3）Upper insulating layer 10, lower insulating layer 11 make：Glass fibre direct impregnation resin is subjected to bidirectional crossed winding, Until being wound into defined size, glass fibre intersecting angle is 90 °, after the completion of be put into 130 DEG C of baking ovens and carry out curing and form, glass There is steel to touch tool in glass fibrous covering to be demoulded, form the sheath with certain wall thickness；Full skirt 3 passes through silicon rubber high temperature sulphur Change machine sulfidization molding, 125 DEG C of curing temperature, vulcanization time 38min；
（4）Casing general assembly；Capacitor core is fixed vertically first, lower end set loads insulating layer, mounting flange 4, upper end cap Insulating layer is loaded onto, flange is sealed with upper and lower insulation interlayer by seal washer, and bolt is fixed, and installation is equal below capacitor core Pressure ball 1, upper insulating layer upper end installation conservator 5, oil level indicating gage 15, terminal plate 6, applies 0.6 ton of pressure clamping screw and is consolidated It is fixed；
（5）Bobbin seal is tested：To applying 0.3Mpa nitrogen pressures in test product, 1.5h is maintained；
（6）Vacuum oil immersion：Product is put into vacuum-pumping container, first to this container vacuum-pumping, vacuum in 2450Pa, Product is set to be in certain vacuum state, then by 65 DEG C of oil injection capacitor core；
（7）Test to casing.
Vacuum glue of the present invention soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, is prepared by science, capacitor core is exhausted Edge performance is high；Insulating layer instead of original frangible insulator, have good antidetonation and explosion prevention function, casing uses hermetically sealed knot Structure, fills transformer oil inside it, the capacitor core of casing is not communicated with air completely, can be to avoid in the irradiation and air of sunlight Nuisance immerse inside pipe casing, and make insulation ag(e)ing, all connector weatherproofs, have it is light-weight, easily transport and Installation, high mechanical strength, it is not easy to which broken, manufacturing process is simple, surface hydrophobicity, and resistance to pollution flashover ability is strong, service life is grown Advantage.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in the above embodiment, further includes Formed technical solution is combined by above technical characteristic.

Claims (2)

1. vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, it is characterised in that：Including voltage equalizing ball, capacitor core, full skirt, method Orchid, conservator, terminal plate, the capacitor core are cylinder, and capacitor core is internally provided with central conductor leader, the central conductor leader Outside alternating packets are equipped with upper insulating layer, lower insulating layer on the outside of insulating layer and aluminium foil, capacitor core, and the upper insulating layer passes through ring Oxygen tree fat connects full skirt, and the flange is arranged in the middle part of capacitor core, and flange side is equipped with air relief cock, and the conservator is arranged on umbrella Above skirt, conservator is equipped with fuel feed hole, and the terminal plate is arranged on above conservator, and the voltage equalizing ball is arranged on capacitor core lower half Part；
The preparation method of described sleeve pipe, comprises the following steps：
（1）Capacitor core rolls：It is using central conductor leader as concentric cylindrical bunchiness by cable paper and aluminium foil that capacitor core, which rolls, Join capacitor, cable thickness of paper is 0.08-0.15mm paper tapes, rolls 2-10 layers in the way of the crimping of circulation 50%, brushes one layer of resin Then after covering last layer 0.1-0.15mm aluminium foils circulation overlap joint, alternately and repeatedly operate until rolling defined design size i.e. To complete to roll；
（2）Capacitor core is dried in vacuo：Capacitor core to be dried is put into the container of a vacuum-pumping, first to this container Vacuumize, vacuum makes product be in certain vacuum state between 0-40Pa, then heats temperature in the container of vacuum To 90-100 DEG C, 1-3h is kept the temperature；
（3）Upper insulating layer, lower insulating layer, full skirt make：Upper insulating layer, lower insulating layer make, by glass fibre direct impregnation tree Fat carries out bidirectional crossed winding, until being wound into defined size, glass fibre intersecting angle is 90 °, after the completion of be put into 120- 140 DEG C of baking ovens carry out curing and form, and have steel to touch tool in fiberglass insulation and are demoulded, and form the shield with certain wall thickness Set；Full skirt passes through the high temperature vulcanized machine sulfidization molding of silicon rubber, 110-130 DEG C of curing temperature, vulcanization time 30-40min；
（4）Casing general assembly：Capacitor core is fixed vertically first, lower end set loads insulating layer, mounting flange, and upper end set is loaded onto absolutely Edge layer, flange are sealed with upper and lower insulation interlayer by seal washer, and bolt is fixed, installation voltage equalizing ball below capacitor core, on Insulating layer upper end installation conservator, oil level indicating gage, terminal plate, apply 0.5-0.8 tons of pressure clamping screws and are fixed；
（5）Bobbin seal is tested：To applying 0.2-0.3Mpa nitrogen pressures in test product, and 1-1.5h is maintained, each sealing surface of test product It is that this experiment passes through without any leakage phenomenon；
（6）Vacuum oil immersion：By step（5）Product afterwards is put into vacuum-pumping container, first to this container vacuum-pumping, vacuum Between 1333-3999.6Pa, product is set to be in certain vacuum state, then by 40-80 DEG C of oil injection capacitor core；
（7）Test to casing.
2. vacuum glue according to claim 1 soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History, it is characterised in that：The conservator It is equipped with oil level indicating gage.
CN201510993987.6A 2015-12-28 2015-12-28 Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History Active CN105469957B (en)

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CN203415386U (en) * 2013-09-09 2014-01-29 江苏智达高压电气有限公司 Anti-inflowing and anti-explosion oiled paper capacitance type transformer sleeve
CN103456473A (en) * 2013-09-11 2013-12-18 江苏智达高压电气有限公司 Integral type oil-paper high-voltage bushing
CN104049167A (en) * 2014-07-04 2014-09-17 国家电网公司 Method for simulating defects of oil impregnated paper bushings
CN203941765U (en) * 2014-07-10 2014-11-12 南京智达电气有限公司 A kind of condenser type dry sleeve
CN105006768A (en) * 2015-05-18 2015-10-28 南京电气高压套管有限公司 Dry type capacitive short tail type GIS sleeve
CN105070496A (en) * 2015-07-24 2015-11-18 南京电气高压套管有限公司 Glass fiber reinforced large-current transformer bushing and production method thereof
CN205319004U (en) * 2015-12-28 2016-06-15 南京电气高压套管有限公司 Vacuum rubber soaks fibre explosion -proof type oil paper capacitance graded bushing

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