CN202333669U - Wall bushing used for switch cabinet - Google Patents
Wall bushing used for switch cabinet Download PDFInfo
- Publication number
- CN202333669U CN202333669U CN2011204302619U CN201120430261U CN202333669U CN 202333669 U CN202333669 U CN 202333669U CN 2011204302619 U CN2011204302619 U CN 2011204302619U CN 201120430261 U CN201120430261 U CN 201120430261U CN 202333669 U CN202333669 U CN 202333669U
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- China
- Prior art keywords
- wall bushing
- type shielding
- capacitance
- epoxy resin
- shielding structure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates a wall bushing used for a switch cabinet. The wall bushing comprises a capacitance type shielding structure and an epoxy resin surface layer, wherein the capacitance type shielding structure is coated by the epoxy resin surface layer, and the capacitance type shielding structure and the epoxy resin surface layer are concentrically arranged. The capacitance type shielding structure is of a concentric circular series capacitor type shielding structure and comprises capacitance screens and insulating layers which are concentrically alternately arranged; and the epoxy resin surface layer comprises a creepage extender and a coupling flange. The epoxy resin surface layer is adopted as outer layer of the wall bushing used for the switch cabinet, and the capacitance type shielding structure, in which a plurality of capacitance screens and a plurality of insulating layers are alternately arranged are adopted inside the wall bushing. In the wall bushing with the structure used for a switch cabinet, the insulating layers are additionally arranged between the capacitance screens to avoid the problem of electric discharge caused by local insulation aging. The wall bushing used for the switch cabinet has the advantages of compact condensate, favorable product consistency, high dimensional precision, low local electric discharge capacity, high product percent of pass, low manufacturing cost, short manufacturing period, etc.
Description
Technical field
The present invention relates to the wall bushing that uses in the electric power system high-tension switch cabinet.
Background technology
In the prior art; Switch cubicle uses epoxide resin automatic pressure gel technology (APG) to make with wall bushing usually, but because the limitation of this technology self, uses the electric field shielding unreasonable structure of the wall bushing that this technology makes; Aging and the partial discharge phenomenon of minor insulation in use often appears; Occur the failure of insulation of wall bushing when causing the switch cubicle long-time running, thereby cause the accident, bring hidden danger to safe operation of power system.
The utility model content
For solving in the prior art switch cubicle with the existing problem of wall bushing; The utility model provides a kind of novel switch cubicle to use wall bushing, and this sleeve pipe solves the problem of wall bushing ageing of insulation in the prior art through the mode of on capacitance plate, setting up insulating barrier.
For realizing above-mentioned purpose, the switch cubicle of the utility model comprises with wall bushing: capacitor type shielding construction and epoxy skins, epoxy skins are coated on outside the said capacitor type shielding construction, and both are provided with one heart; Wherein the capacitor type shielding construction is a circular concentric series capacitance type shielding construction, comprises the capacitance plate and the insulating barrier that are arranged alternately with one heart; Said epoxy skins comprises creeping-increasing skirt and coupling flange.
Further, said capacitance plate is conductor or semi-conducting material; Said insulating barrier is that insulating tape or the empire silk wrapping of epoxy resin-impregnated compound is around forming.
Further, said capacitance plate is that band shape or tow shape conductor or semi-conducting material are entwined.
Further, the outermost layer of said capacitor type shielding construction is an insulating barrier.
Switch cubicle in the utility model is with its outer epoxy skins that adopts of wall bushing; Its inner capacitor type shielding construction that adopts some capacitance plates and some insulating barriers to be arranged alternately, the switch cubicle of this structure have been avoided the aging problem of discharging of minor insulation with wall bushing owing between capacitance plate, set up insulating barrier.Have that solidfied material densification, good product consistency, dimensional accuracy are high, partial discharge quantity is low, product percent of pass is high, low cost of manufacture, advantage such as fabrication cycle is short.
Description of drawings
Fig. 1 uses the wall bushing structural representation for switch cubicle;
Fig. 2 is capacitor type shielding construction (part) sketch map.
Embodiment
As shown in Figure 1, disclosed switch cubicle comprises with wall bushing in the utility model, epoxy skins 1 and capacitor type shielding construction 2.Epoxy skins 1 is coated on outside the capacitor type shielding construction 2, both coaxial settings.And be provided with creeping-increasing skirt 3 and coupling flange 4 in epoxy skins.Capacitor type shielding construction 2 comprises some capacitance plates that are arranged alternately 5 and insulating barrier 6.Wherein capacitance plate is conductor (woven wire) or semi-conducting material, and the material of insulating barrier 6 is that the insulating tape or the empire silk of epoxy resin-impregnated compound is entwined.
Above-mentioned capacitor type shielding construction is made through the following step usually:
A, mould is installed on wrapping machine, evenly smears release agent, for use;
The making of b, capacitance plate: uniform winding last layer capacitance plate material on mould, coiling length is the capacitance plate design length, canoe is the uniform pitch canoe; The capacitance plate material is: woven wire or semi-conducting material;
C, insulating barrier are made: after capacitance plate has twined; On capacitance plate, twine insulating barrier; Insulating barrier is that glass fiber impregnated mixture of epoxy resins twines through wrapping machine hoop uniform pitch or mutual cross-lapping uniform winding dual mode twines; The insulating barrier uniform winding is accomplished insulating barrier and is twined to the thickness of insulating layer and the length of design; Mixture of epoxy resins is specifically filled a prescription to epoxy resin (E51), methyl tetrahydro phthalic anhydride (THPA), dimethylaminomethylphenol (DMP-30) are evenly mixed with the ratio of 100:80:1.5;
D, capacitance plate layer are made: insulating barrier twines capacitance plate above that after twining and accomplishing, and its canoe and material are said identical, as shown in Figure 2 with the b item, and just needing the thickness d and the length △ L of uniform winding is design size; The capacitance plate layer twines the completion continued and twines insulating barrier above that, and 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, the capacitor type shielding construction is put into curing oven; Curing oven is warming up to 90 ℃ of curing; Be warming up to 120 ℃ after 2 hours and solidified 2 hours, continue to be warming up to 155 ℃ and solidify after 4 hours and take out natural cooling, blank is processed in the demoulding of capacitor type shielding construction after being cooled to normal temperature;
F, with lathe capacitor type shielding construction blank is machined to and requires size;
G, the capacitor type shielding construction is packed in the mould, put on the epoxide resin automatic pressure gel equipment, press epoxide resin automatic pressure gel technology injection mixture of epoxy resins, cooling and demolding is processed creeping-increasing skirt shown in Fig. 2 and coupling flange behind hot setting; The mixture of epoxy resins prescription is that epoxy resin (E51), methyl tetrahydro phthalic anhydride (THPA), endurable active toughener, dimethylaminomethylphenol (DMP-30), silicon dioxide, mill base evenly mix with the ratio of 100:100:10:1.5:300:3;
H, product corner burr is repaired, accomplished the making of switch cubicle with wall bushing.
Claims (4)
1. a switch cubicle is used wall bushing, it is characterized in that, said wall bushing comprises: capacitor type shielding construction and epoxy skins, epoxy skins are coated on outside the said capacitor type shielding construction, and both are provided with one heart; Wherein the capacitor type shielding construction is a circular concentric series capacitance type shielding construction, comprises the capacitance plate and the insulating barrier that are arranged alternately with one heart; Said epoxy skins comprises creeping-increasing skirt and coupling flange.
2. use wall bushing according to the said switch cubicle of claim 1, it is characterized in that, said capacitance plate is conductor or semi-conducting material; Said insulating barrier is that insulating tape or the empire silk wrapping of epoxy resin-impregnated compound is around forming.
3. use wall bushing according to the said switch cubicle of claim 1, it is characterized in that, said capacitance plate is that band shape or tow shape conductor or semi-conducting material are entwined.
4. use wall bushing according to the said switch cubicle of claim 1, it is characterized in that, the outermost layer of said capacitor type shielding construction is an insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204302619U CN202333669U (en) | 2011-11-03 | 2011-11-03 | Wall bushing used for switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204302619U CN202333669U (en) | 2011-11-03 | 2011-11-03 | Wall bushing used for switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333669U true CN202333669U (en) | 2012-07-11 |
Family
ID=46445635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204302619U Expired - Lifetime CN202333669U (en) | 2011-11-03 | 2011-11-03 | Wall bushing used for switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333669U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979059A (en) * | 2014-04-14 | 2015-10-14 | 孟繁恒 | Manufacturing method for capacitive high-voltage bushing core |
| 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 |
| CN105070428A (en) * | 2015-07-24 | 2015-11-18 | 南京电气高压套管有限公司 | AC/DC interchangeable type wall bushing made of glass fiber reinforced plastics and method for manufacturing wall bushing |
| CN105206380A (en) * | 2015-07-24 | 2015-12-30 | 南京电气高压套管有限公司 | Glass fiber reinforced plastic transformer bushing with directly-cured core and production method of glass fiber reinforced plastic transformer bushing |
| CN105469957A (en) * | 2015-12-28 | 2016-04-06 | 南京电气高压套管有限公司 | Vacuum resin impregnated fiber explosion-proof oil paper condenser-type bushing |
| CN105514892A (en) * | 2016-01-27 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Wall bushing provided with shielding structure |
| CN113851285A (en) * | 2021-09-14 | 2021-12-28 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Hollow composite insulator with shielding layer and processing method thereof |
-
2011
- 2011-11-03 CN CN2011204302619U patent/CN202333669U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979059A (en) * | 2014-04-14 | 2015-10-14 | 孟繁恒 | Manufacturing method for capacitive high-voltage bushing core |
| 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 |
| CN105070428A (en) * | 2015-07-24 | 2015-11-18 | 南京电气高压套管有限公司 | AC/DC interchangeable type wall bushing made of glass fiber reinforced plastics and method for manufacturing wall bushing |
| CN105206380A (en) * | 2015-07-24 | 2015-12-30 | 南京电气高压套管有限公司 | Glass fiber reinforced plastic transformer bushing with directly-cured core and production method of glass fiber reinforced plastic transformer bushing |
| CN105469957A (en) * | 2015-12-28 | 2016-04-06 | 南京电气高压套管有限公司 | Vacuum resin impregnated fiber explosion-proof oil paper condenser-type bushing |
| CN105469957B (en) * | 2015-12-28 | 2018-04-24 | 南京电气高压套管有限公司 | Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History |
| CN105514892A (en) * | 2016-01-27 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Wall bushing provided with shielding structure |
| CN113851285A (en) * | 2021-09-14 | 2021-12-28 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Hollow composite insulator with shielding layer and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170705 Address after: 210046, No. 2, Xin Zhong Road, Nanjing economic and Technological Development Zone, Jiangsu Patentee after: Nanjing Electric High Voltage Bushing Co., Ltd. Address before: 101400 Beijing city Huairou District Fu Ma Zhuang Village West Patentee before: Sun Wenfeng |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |