CN103500967A - Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing - Google Patents
Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing Download PDFInfo
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- CN103500967A CN103500967A CN201310497602.8A CN201310497602A CN103500967A CN 103500967 A CN103500967 A CN 103500967A CN 201310497602 A CN201310497602 A CN 201310497602A CN 103500967 A CN103500967 A CN 103500967A
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Abstract
The invention introduces a resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing which is provided with a conducting rod (7), wherein the conducting rod (7) is provided with a terminal board (2), a capacitance core (6) in a resin impregnated paper structure is sheathed in a middle section of the conducting rod (7), a sleeve (11) is sheathed on the capacitance core (6), insulating coatings (5), cross sections of which are in multilayer umbrella skirt shapes, are sheathed on both sides of the sleeve (11), and a test tap (9) and an SF6 gas pressure gage (10) are radially connected to the capacitance core (6). The bushing has the advantages that (1) the anti-pollution flashover capability is strong; (2) the civil engineering cost is reduced, and cool leakage of a phytotron is reduced; (3) the influence of heating of a conducting tube of the bushing is favorably reduced; (4) installation and overhaul are convenient; (5) an operating state of the bushing can be monitored in real time; (6) gas leakage is not likely to appear; (7) the grade of design voltage is high, and the application prospect is wide.
Description
Technical field
The invention belongs to the electrical engineering technical field, relate to a kind of glue and soak paper capacitor formula extra-high voltage alternating current-direct current wall bushing, this sleeve pipe is suitable to be arranged in the ultra high voltage climate cell, for test specimen is carried out to applied voltage test.
Background technology
For the icing problem of research extra-high voltage electric transmission and transformation equipment, built in recent years the ultra high voltage climate cell.And that its power-supply device is arranged on usually is outdoor, when the laboratory test product are accepted pressurization, need an extra-high voltage alternating current-direct current wall bushing come joint test power supply and test specimen.But known wall bushing, the oil immersed type extra-high voltage wall feed-through sleeve that the patent documentation that for example application number is 201020684972.4 is introduced, exist following defect: 1) manufacture difficulty is very large, is unfavorable for large-scale production, is unfavorable for that spread is used; 2) in climatic chamber, design condition can not meet the tests such as ice-coating test and dirt, especially during ice-coating test, indoor/outdoor temperature-difference is excessive, usually over 30 degrees centigrade, if adopt the oil immersed type wall bushing, the flow velocity of oil is fast, and the heat conduction is violent, tend to cause indoor cooling gas leakage bigger than normal, affect heat-insulating property.In addition, wall bushing operates in the environment of temperature low temperature fluctuated, and its sealing ring aging speed is fast, also often causes the generation of oil seepage phenomena.
Summary of the invention
The technical problem to be solved in the present invention is, defect for prior art, provide a kind of glue to soak paper capacitor formula extra-high voltage alternating current-direct current wall bushing, this sleeve pipe should be that a kind of electric pressure is high, good airproof performance, can realize AC/DC, contribute to improve laboratory's heat insulating ability and wall bushing that the ne-leakage phenomenon occurs.
Technical scheme of the present invention is, referring to accompanying drawing 1, the glue provided soaks paper capacitor formula extra-high voltage alternating current-direct current wall bushing, has its axial two ends respectively with the conducting rod 7 of terminal board 2.The terminal board 2 of described conducting rod 7 is fixedly mounted on this conducting rod 7.These conducting rod 7 stage casing coaxial lines are set with the electric capacity core body 6 that a tubular epoxide-resin glue soaks paper structure.Be set with its barrel dliameter size and the big or small sleeve 11 mated of the diameter of section of this electric capacity core body 6 on this tubular electric capacity core body 6.These axial both sides of sleeve 11 are respectively installed with the insulating coating 5 that its cross section is multilayer full skirt shape.This axial inboard of two insulating coatings 5 is respectively installed with a flange 8 and by this flange 8, described insulating coating 5, sleeve 11, electric capacity core body 6 is fixed on described conducting rod 7.
Radially be connected with a test tap 9 and a SF6(sulphur hexafluoride on described electric capacity core body 6) gas gauge 10, this test tap 9 and SF6 gas gauge 10 extend radially out respectively sleeve 11 and are fixedly mounted on the outer wall of this sleeve 11, and the conduit of wherein said SF6 gas gauge 10 connects and is connected with the inner chamber of described sleeve 11.The insulating coating 5 at described sleeve 11 two ends is respectively installed with cover plate 4 and gland 3, makes termination, two ends and the terminal board 2 of the conducting rod 7 in sleeve 11 pass successively respectively cover plate 4 and gland 3.This gland 3 and cover plate 4 are fixedly mounted on described insulating coating 5.In addition, be sleeved on the cover plate 4 at conducting rod 7 two ends and also be separately installed with for even terminal board 2 Analysis of End Electric Fields, prevent the grading ring 1 of corona discharge.
Operation principle of the present invention is: referring to Fig. 1, be arranged on respectively grading ring 1 on conducting rod 7 two end cover plates 4 for even terminal board 2 Analysis of End Electric Fields, prevent corona discharge; Be located at respectively the terminal board 2 at sleeve pipe two ends for connecting test specimen and pressurized equipment; Cover plate 4 is separately fixed at indoor section end and the outdoor section end of insulating coating 5, and its effect is sealed insulation overcoat 5 ends, prevents the SF6 Leakage Gas; Gland 3 is fixed on the outside of cover plate 4, for strengthening the sealing property of cover plate 4; Conducting rod 7 generally has inside and outside two conduits, and electric capacity core body 6 generally is solidificated on the outer wall of outer catheter.Inner catheter is connected with the terminal board 2 at axial two ends, so that form electrical connection between test specimen and pressurized equipment; The main insulation body that electric capacity core body 6 is sleeve pipe, generally adopt epoxide-resin glue to soak paper structure, lightweight, and good insulation preformance, can be used for the electric field between homogeneous conductive bar 7 and the external world, and bear the most of voltage applied on conducting rod; SF6 gas is full of whole inside pipe casing, for the insulation between electric capacity core body 6 and conducting rod 7 and insulating coating 5; Insulating coating 5 by indoor and outdoor two sections form, be arranged on jacket exterior, be the external insulation of sleeve pipe, generally adopt organic composite silicon hollow rubber insulator, there is good anti-fouling flashover performance, external flashover occurs while preventing that sleeve pipe is charged; Flange 8 connects insulating coating 5 and sleeve 11 for transition, at sleeve 11 and flange 8 endoporus places, generally is processed with a plurality of apertures, can make the SF6 gas uniform be full of whole cannula cavity; Test tap 9 is as dielectric loss, partial discharge quantity and the capacitance of measuring sleeve pipe; Real-Time Monitoring SF6 gas pressure when SF6 gas gauge 10 moves for this sleeve pipe, guarantee that electric property is reliable; Sleeve 11 is for linking together easily with open air indoor section of insulating coating 5.
The invention has the beneficial effects as follows:
1), its external insulation adopts organic composite silicon hollow rubber insulator, its anti-pollution flashover ability is strong;
2), its internal capacitance fuse adopts epoxide-resin glue to soak the paper insulation structure, fill SF6 gas between hollow combined insulator and capacitor core, the weight of whole sleeve pipe is reduced greatly, requirement to ultra high voltage climate cell sleeve pipe load-carrying members reduces greatly, reduced civil engineering cost, in sleeve pipe, the heat conductivility of various materials is poor simultaneously, has greatly reduced thus the sealing cold draining of phjytotron;
3), adopt the DLC structure, be conducive to reduce the impact of sleeve pipe contact tube heating on the insulation core body performance;
4), between sleeve and electric capacity core body, adopt clamping structure, the installation and repairing convenience;
5), the SF6 gas gauge is housed, but the running status of Real-Time Monitoring sleeve pipe;
6), be provided with twice axial seal between inner catheter and cover plate and gland, therefore good seal performance is not prone to Leakage Gas;
7), the integral insulation structural design electric pressure of this sleeve pipe is high, various performance parameters can meet the operation of extra-high-voltage alternating current 1100kV and direct current ± 800kV simultaneously and carry out the needs of necessary scientific research and testing, has a extensive future.
The accompanying drawing explanation
Fig. 1 is the structural representation that glue of the present invention soaks a specific embodiment of paper capacitor formula extra-high voltage alternating current-direct current wall bushing, in figure, is denoted as:
1-grading ring,
2-terminal board,
3-gland,
4-cover plate,
5-insulating coating,
6-electric capacity core body,
7-conducting rod,
8-flange,
9-test tap,
10-SF6 gas gauge,
11-sleeve.
Embodiment
Referring to accompanying drawing 1, the glue of this embodiment of the invention shown in Fig. 1 soaks paper capacitor formula extra-high voltage alternating current-direct current wall bushing, has its axial two ends respectively with the conducting rod 7 of terminal board 2.The copper pipe profile of common interlayer that the commercially available caliber of conducting rod 7 employing is Ф 50mm is tailored and is formed, long 28000mm, outer wall thickness 5mm, interior wall thickness 10mm.Terminal board 2 adopts the thick ordinary copper scutum of commercially available 20mm section bar to tailor, long 120mm, and wide 80mm, be bolted and be arranged on conducting rod 7.Conducting rod 7 stage casing coaxial line suit electric capacity core bodys 6, electric capacity core body 6 is the tubular epoxide-resin glue and soaks paper structure, the DXT-1000 type epoxide-resin glue that system adopts commercially available Chinese Xi'an high voltage bushing Co., Ltd to produce soaks paper bushing electric capacity core body, long 10700mm, 115 grades of capacitance plates of tool.
Suit one sleeve 11 on electric capacity core body 6, sleeve 11 adopts the thick common stainless steel pipe profile of commercially available 80mm to tailor and forms, long 2000mm, barrel dliameter Ф 880mm, barrel dliameter size and the big or small coupling of the diameter of section of electric capacity core body 6.The axial both sides of sleeve 11 are set with the insulating coating 5 that a cross section is multilayer full skirt shape.The XTW-1000 type high-tension insulating bushing overcoat that the insulating coating 5 Chinese Xi'an of employing high voltage bushing Co., Ltds produce, external diameter Ф 880 ㎜, the long 7545mm of indoor end, creepage distance is greater than 20000mm, the long 8680mm of outdoor end, creepage distance is greater than 28000mm.The axial inboard of two insulating coatings 5 is set with a flange 8.Flange 8 adopts commercially available common stainless steel section bar to make, external diameter Ф 1300mm, internal diameter Ф 880mm.Flange 8 is bolted to insulating coating 5, sleeve 11, electric capacity core body 6 on conducting rod 7.
Radially connect a test tap 9 and a SF6 gas gauge 10 on electric capacity core body 6.The electric capacity core body tap that the model that test tap 9 adopts commercially available Chinese Xi'an high voltage bushing Co., Ltd to produce is CT-1000, its ac voltage withstanding is 3kV; The YX-100 type SF6 gas gauge that SF6 gas gauge 10 adopts instrument and meter for automation one factory in commercially available Chinese Xi'an to produce, its pressure measurement range is-0.1～0.9MPa, certainty of measurement is 2.5 grades.Test tap 9 and SF6 gas gauge 10 extend radially out respectively sleeve 11 and are fixedly mounted on the outer wall of sleeve 11, and wherein the conduit of SF6 gas gauge 10 connects and is connected with the inner chamber of sleeve 11.
The insulating coating 5 at sleeve 11 two ends is respectively installed with cover plate 4 and gland 3, makes termination, two ends and the terminal board 2 of the conducting rod 7 in sleeve 11 pass successively respectively cover plate 4 and gland 3.Gland 3 and cover plate 4 all adopt the thick ordinary epoxy resin profile material of commercially available 20mm to tailor and form, and wherein the external diameter of gland 3 is Ф 140mm, and internal diameter is Ф 50mm, and the external diameter of cover plate 4 is Ф 880mm, and internal diameter is Ф 120mm.Gland 3 and cover plate 4 are fixedly mounted on insulating coating 5 by screw.Be sleeved on the cover plate 4 at conducting rod 7 two ends aluminum alloy material grading ring 1 is housed respectively, ring footpath Ф 1.4m, grading ring 1 also is fixed on cover plate 4 by screw.
Claims (1)
1. a glue soaks paper capacitor formula extra-high voltage alternating current-direct current wall bushing, it is characterized in that, it has its axial two ends respectively with the conducting rod (7) of terminal board (2), the terminal board (2) of described conducting rod (7) is fixedly mounted on this conducting rod (7), this conducting rod (7) stage casing coaxial line is set with the electric capacity core body (6) that a tubular epoxide-resin glue soaks paper structure, be set with its barrel dliameter size and the big or small sleeve (11) mated of the diameter of section of this electric capacity core body (6) on this tubular electric capacity core body (6), this sleeve (11) axially is respectively installed with the insulating coating (5) that its cross section is multilayer full skirt shape in both sides, these two insulating coatings (5) axially inboard are respectively installed with a flange (8) and pass through this flange (8) by described insulating coating (5), sleeve (11), electric capacity core body (6) is fixed on described conducting rod (7), radially be connected with a test tap (9) and a SF6 gas gauge (10) on described electric capacity core body (6), this test tap (9) and SF6 gas gauge (10) extend radially out respectively sleeve (11) and are fixedly mounted on the outer wall of this sleeve (11), the conduit of wherein said SF6 gas gauge (10) connects and is connected with the inner chamber of described sleeve (11), the insulating coating (5) at described sleeve (11) two ends is respectively installed with cover plate (4) and gland (3), make termination, two ends and the terminal board (2) of the conducting rod (7) in sleeve (11) pass successively respectively cover plate (4) and gland (3), this gland (3) and cover plate (4) are fixedly mounted on described insulating coating (5), in addition, be sleeved on the cover plate (4) at conducting rod (7) two ends and also be separately installed with for even terminal board (2) Analysis of End Electric Field, prevent the grading ring (1) of corona discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497602.8A CN103500967A (en) | 2013-10-22 | 2013-10-22 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497602.8A CN103500967A (en) | 2013-10-22 | 2013-10-22 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
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| CN103500967A true CN103500967A (en) | 2014-01-08 |
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| CN201310497602.8A Pending CN103500967A (en) | 2013-10-22 | 2013-10-22 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606850A (en) * | 2015-11-27 | 2016-05-25 | 平高集团有限公司 | High-voltage DC support insulator test apparatus, test system and system method |
| CN110729684A (en) * | 2019-10-31 | 2020-01-24 | 西安交通大学 | Ultra/extra-high voltage SF6Gas insulation wall bushing and insulation supporting structure thereof |
| WO2020082556A1 (en) * | 2018-10-23 | 2020-04-30 | 南京智达电气设备有限公司 | Combination ultra-high-pressure rubber-impregnated paper sleeve |
| CN112002463A (en) * | 2020-07-17 | 2020-11-27 | 清华大学 | High-voltage AC/DC wall bushing and preparation method thereof |
| CN112858848A (en) * | 2021-01-06 | 2021-05-28 | 浙江大有实业有限公司电缆工程分公司 | Repairable type test overline device capable of penetrating through narrow door or narrow window |
| CN114050532A (en) * | 2021-09-22 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 800kV flexible direct-current wall bushing |
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| CN201113334Y (en) * | 2007-09-04 | 2008-09-10 | 西安电力机械制造公司 | Oil-free capacitance type wall-through insulation sleeve |
| WO2009146570A1 (en) * | 2008-06-04 | 2009-12-10 | Trench Switzerland Ag | Duct with a base active piece and an insulation device |
| CN201860065U (en) * | 2010-11-22 | 2011-06-08 | 中国西电电气股份有限公司 | Glue-impregnated capacitance type direct-current wall bushing |
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| CN102928744A (en) * | 2011-08-12 | 2013-02-13 | 上海市电力公司 | Partial discharge simulator of metal closed composite apparatus |
| CN203491637U (en) * | 2013-10-22 | 2014-03-19 | 国家电网公司 | Resin impregnated paper capacitive extra-high voltage AC-DC wall bushing |
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Patent Citations (9)
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| DE2627653A1 (en) * | 1975-07-03 | 1977-01-20 | Haefely & Cie Ag Emil | OUTDOOR HIGH VOLTAGE FEEDTHROUGH FOR SF TIEF 6 COMPRESSED GAS ISOLATED ELECTRICAL SYSTEMS |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606850A (en) * | 2015-11-27 | 2016-05-25 | 平高集团有限公司 | High-voltage DC support insulator test apparatus, test system and system method |
| CN105606850B (en) * | 2015-11-27 | 2019-01-22 | 平高集团有限公司 | High voltage direct current supporting insulator experimental rig, pilot system and test method |
| WO2020082556A1 (en) * | 2018-10-23 | 2020-04-30 | 南京智达电气设备有限公司 | Combination ultra-high-pressure rubber-impregnated paper sleeve |
| CN110729684A (en) * | 2019-10-31 | 2020-01-24 | 西安交通大学 | Ultra/extra-high voltage SF6Gas insulation wall bushing and insulation supporting structure thereof |
| CN110729684B (en) * | 2019-10-31 | 2020-10-27 | 西安交通大学 | Ultra/extra-high voltage SF6Gas insulation wall bushing and insulation supporting structure thereof |
| CN112002463A (en) * | 2020-07-17 | 2020-11-27 | 清华大学 | High-voltage AC/DC wall bushing and preparation method thereof |
| CN112002463B (en) * | 2020-07-17 | 2021-11-19 | 清华大学 | High-voltage AC/DC wall bushing of more than 35kV and preparation method thereof |
| CN112858848A (en) * | 2021-01-06 | 2021-05-28 | 浙江大有实业有限公司电缆工程分公司 | Repairable type test overline device capable of penetrating through narrow door or narrow window |
| CN114050532A (en) * | 2021-09-22 | 2022-02-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | 800kV flexible direct-current wall bushing |
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Application publication date: 20140108 |