CN102013322A - Dry type high-voltage capacitor core and manufacture method thereof - Google Patents
Dry type high-voltage capacitor core and manufacture method thereof Download PDFInfo
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- CN102013322A CN102013322A CN 201010292041 CN201010292041A CN102013322A CN 102013322 A CN102013322 A CN 102013322A CN 201010292041 CN201010292041 CN 201010292041 CN 201010292041 A CN201010292041 A CN 201010292041A CN 102013322 A CN102013322 A CN 102013322A
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Abstract
The invention relates to a capacitance type major insulation structure used in a power system high-voltage electrical apparatus device and a manufacture method thereof. A dry type high-voltage capacitor core comprises a zero screen, an insulation layer, a capacitor screen, a grounding end screen, a measuring leading-out wire and an insulation outer protecting layer, wherein the inner insulation layer is wound to the required size by using glass fiber roving in a certain manner; the capacitor screen is uniformly wound into the required size by using an aluminum foil or metal wire net or semiconductor material or carbon fiber; and the capacitor screen and the insulation layer are alternatively wound to the required sizes, and then an epoxy resin curing system is poured under the vacuum state, and subjected to temperature rise and cured into a multi-layer pure solid and interface-free concentric round serial capacitor voltage-sharing structure. The capacitor core made by using the method has the advantages of high mechanical strength, good heat radiation, low local discharge capacity, high product qualified rate, low manufacture cost, short manufacture period and the like.
Description
Technical field
The present invention relates to capacitor type Main Insulation Structure of Electric and the manufacture method thereof used in the electric power system high-voltage electrical equipment, particularly a kind ofly be used to improve along the face field intensity and have the capacitor type Main Insulation Structure of Electric and the production method thereof of insulation against ground effect.
Background technology
The manufacturing technology that a kind of epoxy resin varnish(ed) paper under vacuum condition is arranged at present, use the capacitor core of this technology manufacturing to be difficult for soaking into owing to insulating paper, air gap is difficult to get rid of, be easy to generate partial discharge, so product percent of pass is low, especially in that more the high voltage product is bigger owing to volume, can not meet the demands; The capacitor core poor radiation that this technology is made, when current-carrying required greatly, needing increased radiator structure, makes the product structure complexity, and cost strengthens and is easy to generate fault; The capacitor core mechanical strength that this technology is made is low, thereby can cause the insulation cracking to cause failure of insulation to cause the accident under transformer long-term vibration operating mode; The high production cycle of capacitor core cost of using this technology to make is long.
At Chinese patent, the patent No.: ZL03100143.2; Title: disclose a kind of dry type capacitor core machine manufacture method in dry type capacitor core and the manufacture method thereof, wherein insulating barrier adopts the insulating material of insulation tow or insulating tape dipping adhesive solidification to be entwined in a certain way, capacitance plate is formed by band shape or tow shape semi-conducting material or impregnated carbon fiber adhesive solidification material uniform winding, and after described capacitance plate and insulating barrier alternately twined and bond together, the equal laminated structure of circular concentric series capacitance at the pure solid of multilayer, no interface was made in curing by heating up.It is short that the capacitor core that uses this kind method to make has fabrication cycle, low cost of manufacture, perfect heat-dissipating, mechanical strength advantages of higher; But because the varnished insulation material does not pass through vacuum treatment in the air that adopts in this technology, be difficult for discharging, when high voltage, have partial discharge and occur, can not satisfy the requirement of high voltage product so have bubble in the capacitor core of producing.
Summary of the invention
For solving the existing the problems referred to above of prior art dry-type high-voltage capacitor core, an object of the present invention is to provide a kind of dry-type high-voltage capacitor core, another object of the present invention provides a kind of method of producing the dry-type high-voltage capacitor core.
A kind of dry-type high-voltage capacitor core, comprise capacitance plate zero screen, insulating barrier, capacitance plate layer, ground connection end screen, measure lead-out wire, insulation external protection, described capacitance plate zero screen is formed by band shape or tow shape conductor or semi-conducting material uniform winding, and reaches desired size; Described insulating barrier is shielded around described capacitance plate zero by the empire silk wrapping; and reach desired size; described capacitance plate is formed by band shape or tow shape conductor or semi-conducting material uniform winding; and after described capacitance plate and insulating barrier alternately are wound to and require the capacitor core size; dismiss the edge external protection at winding ground connection end thereon; and the desired location that shields at the ground connection end is provided with the measurement lead-out wire; at last; casting epoxy resin curing system under vacuum state, and intensification is solidified into the equal laminated structure of circular concentric series capacitance at the pure solid of multilayer, no interface.
Further, described insulation tow or insulating tape are the alkali-free glass fibre rove; Conductor in the described capacitance plate material is aluminium foil, woven wire or conductive carbon fibre.
Further, the insulation external protection of described dry type capacitor core is carried out machine work, require or connector requires to be processed into needed shape and fit dimension according to the external insulation of applied high-voltage electrical equipment.
A kind of method of producing the dry-type high-voltage capacitor core comprises the following steps:
A, plug is removed surface oxide layer with emery cloth polishing, and it is cleaned up, be installed on wrapping machine, stand-by;
The making of b, capacitance plate zero screen: uniform winding last layer capacitance plate material on described plug, coiling length is the capacitance plate design length;
C, insulating barrier are made: after described capacitance plate zero screen has twined, and uniform winding insulating barrier on zero screen, insulating barrier is wound to the thickness of insulating layer and the length of setting, and insulating barrier twines to be finished;
D, capacitance plate make: after insulating barrier twines and finishes, and uniform winding ground floor capacitance plate thereon, the capacitance plate layer is wound to the capacitance plate layer thickness and the length of setting, and the capacitance plate layer twines to be finished; The capacitance plate layer continues to twine insulating barrier thereon after twining and finishing, and insulating barrier also is wound to sets thickness and length; Insulating barrier and capacitance plate alternately twine at interval winding are set, until design size;
E, ground connection end screen are made: insulating barrier and capacitance plate alternately twine to be provided with at interval and are wound to design size; With on ground connection end screen uniform winding and its; Need be when twining in the position that requires pre-buried measurement lead-out wire;
F, insulation external protection are made: the external protection that will insulate is wound on the screen of ground connection end uniformly, and is wound to required thickness and length;
G, casting: with in the capacitor core casting die, put into vacuum tank after the insulation external protection twines and finishes, press vacuum casting technology casting epoxy resin curing system, cooling and demolding is made the capacitor core blank behind hot setting;
H, described capacitor core blank is processed into designing requirement shape and physical dimension on machining apparatus, finishes capacitor core and make.
Further, described capacitance plate zero shields, described capacitance plate is identical with the canoe of described ground connection end screen, and its canoe is a hoop uniform pitch canoe.
Further, described insulating barrier is identical with the canoe of insulation external protection, and its canoe twines for the hoop uniform pitch or mutual cross-lapping uniform winding mode is twined.
Further, described casting step is specially: in the described capacitor core casting die of after the insulation external protection twines and to finish capacitor core being packed into, put into vacuum tank, the vacuum tank temperature is risen to 50 ℃, be evacuated to 300Pa, the concrete prescription of epoxy resin solidifying system is for evenly mixing epoxy resin E51, methyl tetrahydro phthalic anhydride THPA, dimethylaminomethylphenol DMP-30 and the fully degassing with 100: 80: 1.5 ratio; Epoxy resin solidifying system is poured in the mould by 100cc/min, stops cast after die casting is full; Vacuum tank is warming up to 90 ℃ of curing, taking-up is put into baking oven and is warming up to 120 ℃ of curing 2 hours after 2 hours, continue to be warming up to 155 ℃ and solidify after 4 hours and take out natural cooling, be cooled to behind the normal temperature capacitor core blank taken out from mould and carry out related electric and test.
The capacitor core that this kind method is made has the mechanical strength height, perfect heat-dissipating, and partial discharge quantity is low, product percent of pass height, low cost of manufacture, advantages such as fabrication cycle weak point.
Description of drawings
Fig. 1 dry-type high-voltage capacitor core;
Fig. 2 capacitor core casting mold;
Fig. 3 is a hoop uniform pitch canoe schematic diagram;
Fig. 4 is the mutual cross-lapping uniform winding of an insulating barrier mode schematic diagram.
Embodiment
Shown among Fig. 1 is a kind of dry-type high-voltage capacitor core, comprises zero screen 1, insulating barrier 2, capacitance plate 3, ground connection end screen 4, measures lead-out wire 5 and insulation external protection 6.Wherein, insulating barrier 2 by woven glass roving fabric with the mutual cross-lapping canoe uniform winding shown in the uniform pitch canoe shown in Fig. 3 or Fig. 4 to design size; Capacitance plate 3 by aluminium foil, woven wire, band shape or tow shape conductive carbon fibre or semi-conducting material with mode uniform winding shown in Figure 3 to requiring size; And after capacitance plate 3 and insulating barrier 2 alternately are wound to and require size, casting epoxy resin curing system under vacuum state, and the equal laminated structure of circular concentric series capacitance at the pure solid of multilayer, no interface is made in the curing that heats up.
The manufacture method of the dry-type high-voltage capacitor core shown in Fig. 1 is as follows:
A removes surface oxide layer with the polishing of plug 1 usefulness emery cloth, and with acetone the impurity such as grease on it is cleaned up, and is installed on wrapping machine, and is stand-by;
The making of b capacitance plate zero screen: uniform winding last layer capacitance plate material on plug 1, coiling length is the capacitance plate design length, canoe is the hoop uniform pitch canoe shown in Fig. 3; The capacitance plate material is: aluminium foil, woven wire, semi-conducting material or conductive carbon fibre material;
C, insulating barrier are made: after zero screen has twined, on zero screen, twine insulating barrier, insulating barrier is a woven glass roving fabric, pencil alkali-free glass fibre roving is twined by winding of the hoop uniform pitch shown in Fig. 3 or the mutual cross-lapping uniform winding of Fig. 4 dual mode, the insulating barrier uniform winding is finished insulating barrier and is twined to the thickness of insulating layer and the length of design;
D, capacitance plate layer are made: insulating barrier twines the ground floor capacitance plate thereon after twining and finishing, and its canoe and material are identical with capacitance plate zero screen, and just needing the thickness d and the length Δ L of uniform winding is design size; Continue to twine insulating barrier thereon after the capacitance plate layer twines and finishes, insulating barrier also is wound to design thickness and length.Insulating barrier and capacitance plate layer alternately twine at interval and are provided with, until being wound to design size;
E, ground connection end screen are made: insulating barrier and capacitance plate alternately twine to be provided with at interval and are wound to design size; Ground connection end screen is used on the mode uniform winding identical with the capacitance plate canoe and its; As shown in Figure 1, need be when twining in the position that requires pre-buried measurement lead-out wire 5;
F, insulation external protection are made: the canoe of insulation external protection 6 is identical with the insulating barrier canoe, is wound to required thickness and length.
G, casting: after the insulation external protection twines and to finish with in the mould shown in the capacitor core load map 2; put into vacuum tank; the vacuum tank temperature is risen to 50 ℃; be evacuated to 300Pa, the concrete prescription of epoxy resin solidifying system is for evenly mixing epoxy resin (E51), methyl tetrahydro phthalic anhydride (THPA), dimethylaminomethylphenol (DMP-30) and the fully degassing with 100: 80: 1.5 ratio.Epoxy resin solidifying system is poured in the mould by 100cc/min, stops cast after die casting is full.Vacuum tank is warming up to 90 ℃ of curing, taking-up is put into baking oven and is warming up to 120 ℃ of curing 2 hours after 2 hours, continue to be warming up to 155 ℃ and solidify after 4 hours and take out natural cooling, be cooled to behind the normal temperature capacitor core blank taken out from mould and carry out related electric and test.
H, the capacitor core blank is processed into designing requirement shape and physical dimension on machining apparatus, finishes capacitor core and make.
The manufacture method of the mould that relates in the said method is as follows:
Mold Making: as shown in Figure 2, mould comprises plug 21 and housing 22, and plug 21 is round metal bars or pipe, and housing 22 is the cylinder of end sealing, and plug 21 passes housing 22 along the vertical central axis of housing 22.
Wherein plug 21 is a current; Its length is greater than the length of the high-voltage capacitance fuse that will make, and its cross-sectional area will be set according to the requirement and the material current density of electric current, with the performance of the high-voltage capacitance fuse that guarantees to produce; Housing 22 is the cylindrical shell that internal diameter and length meet design requirement, each layer of high-voltage capacitance fuse is after winding on the plug 21, after plug 21 passed the blind end of housing 22 along the vertical central axis of housing 22, seal between itself and this blind end, to avoid in the casting operation subsequently employed epoxy resin by spilling in both slits.Sprue gate 23 is stayed in the open end of housing 22, and the inner surface fineness of housing 22 requires more than the H6, adopts steel to make.Two kinds of capacitor core load sharing streaming and open-core types, the plug 21 in the current-carrying formula capacitor core can adopt aluminium bar or copper rod.
Claims (7)
1. dry-type high-voltage capacitor core, comprise capacitance plate zero screen, insulating barrier, capacitance plate layer, ground connection end screen, measure lead-out wire, insulation external protection, it is characterized in that: described capacitance plate zero screen is formed by band shape or tow shape conductor or semi-conducting material uniform winding, and reaches desired size; Described insulating barrier is shielded around described capacitance plate zero by the empire silk wrapping; and reach desired size; described capacitance plate is formed by band shape or tow shape conductor or semi-conducting material uniform winding; and after described capacitance plate and insulating barrier alternately are wound to and require the capacitor core size; dismiss the edge external protection at winding ground connection end thereon; and the desired location that shields at the ground connection end is provided with the measurement lead-out wire; at last; casting epoxy resin curing system under vacuum state, and intensification is solidified into the equal laminated structure of circular concentric series capacitance at the pure solid of multilayer, no interface.
2. according to the capacitor core of dry-type high-voltage described in the claim 1, it is characterized in that: described insulation tow or insulating tape are the alkali-free glass fibre rove; Conductor in the described capacitance plate material is aluminium foil, woven wire or conductive carbon fibre.
3. the described dry-type high-voltage capacitor core of arbitrary as described above claim; it is characterized in that: the insulation external protection to described dry type capacitor core carries out machine work, is processed into needed shape and fit dimension according to the external insulation requirement or the connector requirement of applied high-voltage electrical equipment.
4. a method of producing the dry-type high-voltage capacitor core comprises the following steps:
A removes surface oxide layer with plug with the emery cloth polishing, and it is cleaned up, and is installed on wrapping machine, and is stand-by;
The making of b capacitance plate zero screen: uniform winding last layer capacitance plate material on described plug, coiling length is the capacitance plate design length;
C, insulating barrier are made: after described capacitance plate zero screen has twined, and uniform winding insulating barrier on zero screen, insulating barrier is wound to the thickness of insulating layer and the length of setting, and insulating barrier twines to be finished;
D, capacitance plate make: after insulating barrier twines and finishes, and uniform winding ground floor capacitance plate thereon, the capacitance plate layer is wound to the capacitance plate layer thickness and the length of setting, and the capacitance plate layer twines to be finished; The capacitance plate layer continues to twine insulating barrier thereon after twining and finishing, and insulating barrier also is wound to sets thickness and length; Insulating barrier and capacitance plate alternately twine at interval winding are set, until design size;
E, ground connection end screen are made: insulating barrier and capacitance plate alternately twine to be provided with at interval and are wound to design size; With on ground connection end screen uniform winding and its; Need be when twining in the position that requires pre-buried measurement lead-out wire;
F, insulation external protection are made: the external protection that will insulate is wound on the screen of ground connection end uniformly, and is wound to required thickness and length;
G, casting: with in the capacitor core casting die, put into vacuum tank after the insulation external protection twines and finishes, press vacuum casting technology casting epoxy resin curing system, cooling and demolding is made the capacitor core blank behind hot setting;
H, described capacitor core blank is processed into designing requirement shape and physical dimension on machining apparatus, finishes capacitor core and make.
5. according to the method for producing the dry-type high-voltage capacitor core described in the claim 4, it is characterized in that: described capacitance plate zero shields, described capacitance plate is identical with the canoe of described ground connection end screen, and its canoe is a hoop uniform pitch canoe.
6. according to the method for producing the dry-type high-voltage capacitor core described in the claim 4, it is characterized in that: described insulating barrier is identical with the canoe of insulation external protection, and its canoe twines for the hoop uniform pitch or mutual cross-lapping uniform winding mode.
7. according to the method for producing the dry-type high-voltage capacitor core described in the claim 4, it is characterized in that: described casting step is specially: in the described capacitor core casting die of after the insulation external protection twines and to finish capacitor core being packed into, put into vacuum tank, the vacuum tank temperature is risen to 50 ℃, be evacuated to 300Pa, the concrete prescription of epoxy resin solidifying system is for evenly mixing epoxy resin E51, methyl tetrahydro phthalic anhydride THPA, dimethylaminomethylphenol DMP-30 and the fully degassing with 100: 80: 1.5 ratio; Epoxy resin solidifying system is poured in the mould by 100cc/min, stops cast after die casting is full; Vacuum tank is warming up to 90 ℃ of curing, taking-up is put into baking oven and is warming up to 120 ℃ of curing 2 hours after 2 hours, continue to be warming up to 155 ℃ and solidify after 4 hours and take out natural cooling, be cooled to behind the normal temperature capacitor core blank taken out from mould and carry out related electric and test.
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| CN2010102920414A CN102013322B (en) | 2010-09-26 | 2010-09-26 | Dry type high-voltage capacitor core and manufacture method thereof |
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| CN103117117A (en) * | 2013-03-11 | 2013-05-22 | 孙闻峰 | Insulation tube bus and manufacturing method thereof |
| CN104044232A (en) * | 2013-03-14 | 2014-09-17 | Abb技术有限公司 | Mold For Impregnating A Prefabricated Condenser Core And Device For Forming A Condenser Core |
| CN105144308A (en) * | 2012-12-13 | 2015-12-09 | Abb技术有限公司 | High voltage device and a method of manufacturing a high voltage device |
| CN105655069A (en) * | 2016-04-11 | 2016-06-08 | 孟繁恒 | Impregnation method for dry capacitance type high-voltage bushing core |
| CN108736400A (en) * | 2018-08-09 | 2018-11-02 | 山东辰祥电气设备有限公司 | Glue soaks felt bushing |
| CN113053672A (en) * | 2021-03-23 | 2021-06-29 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Fixing and sealing method of combined non-solid tantalum capacitor for spacecraft |
| CN114078618A (en) * | 2021-12-23 | 2022-02-22 | 山东辰祥电气设备有限公司 | Dry-type capacitive sleeve core and manufacturing method thereof |
| CN114420393A (en) * | 2022-01-11 | 2022-04-29 | 国网电力科学研究院武汉南瑞有限责任公司 | Production method, recording medium and system of GIS outgoing line sleeve |
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| CN1419250A (en) * | 2003-01-07 | 2003-05-21 | 孙闻峰 | Dry type high-voltage capacitor core and making method thereof |
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| CN105144308A (en) * | 2012-12-13 | 2015-12-09 | Abb技术有限公司 | High voltage device and a method of manufacturing a high voltage device |
| US9870847B2 (en) | 2012-12-13 | 2018-01-16 | Abb Schweiz Ag | High voltage device and a method of manufacturing a high voltage device |
| CN105144308B (en) * | 2012-12-13 | 2016-10-12 | Abb技术有限公司 | High pressure equipment and the method manufacturing high pressure equipment |
| CN103117117A (en) * | 2013-03-11 | 2013-05-22 | 孙闻峰 | Insulation tube bus and manufacturing method thereof |
| CN104044232A (en) * | 2013-03-14 | 2014-09-17 | Abb技术有限公司 | Mold For Impregnating A Prefabricated Condenser Core And Device For Forming A Condenser Core |
| CN104044232B (en) * | 2013-03-14 | 2017-03-22 | Abb 技术有限公司 | Mold For Impregnating A Prefabricated Condenser Core And Device For Forming A Condenser Core |
| CN105655069B (en) * | 2016-04-11 | 2017-05-03 | 孟繁恒 | Impregnation method for dry capacitance type high-voltage bushing core |
| CN105655069A (en) * | 2016-04-11 | 2016-06-08 | 孟繁恒 | Impregnation method for dry capacitance type high-voltage bushing core |
| CN108736400A (en) * | 2018-08-09 | 2018-11-02 | 山东辰祥电气设备有限公司 | Glue soaks felt bushing |
| CN113053672A (en) * | 2021-03-23 | 2021-06-29 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Fixing and sealing method of combined non-solid tantalum capacitor for spacecraft |
| CN113053672B (en) * | 2021-03-23 | 2023-05-12 | 中国振华(集团)新云电子元器件有限责任公司(国营第四三二六厂) | Method for fixedly sealing combined non-solid tantalum capacitor for spacecraft |
| CN114078618A (en) * | 2021-12-23 | 2022-02-22 | 山东辰祥电气设备有限公司 | Dry-type capacitive sleeve core and manufacturing method thereof |
| CN114420393A (en) * | 2022-01-11 | 2022-04-29 | 国网电力科学研究院武汉南瑞有限责任公司 | Production method, recording medium and system of GIS outgoing line sleeve |
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Owner name: NANJING ELECTRIC HIGH VOLTAGE BUSHING CO., LTD. Free format text: FORMER OWNER: SUN WENFENG Effective date: 20120921 |
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Effective date of registration: 20120921 Address after: 210046, No. 2, Xin Zhong Road, Nanjing economic and Technological Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Electric High Voltage Bushing Co., Ltd. Address before: Fu Ma Zhuang Cun Bei Fang Zhen Beijing city Huairou District 101400 West Beijing pan Rett Technology Co. Patentee before: Sun Wenfeng |