CN202957102U - Insulating structure for pressure equalizing ball of oil-impregnated paper condenser type transformer bushing - Google Patents
Insulating structure for pressure equalizing ball of oil-impregnated paper condenser type transformer bushing Download PDFInfo
- Publication number
- CN202957102U CN202957102U CN 201220553057 CN201220553057U CN202957102U CN 202957102 U CN202957102 U CN 202957102U CN 201220553057 CN201220553057 CN 201220553057 CN 201220553057 U CN201220553057 U CN 201220553057U CN 202957102 U CN202957102 U CN 202957102U
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- Prior art keywords
- equalizing ball
- bushing
- sleeve pipe
- transformer
- voltage equalizing
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Abstract
The utility model discloses an insulating structure for a pressure equalizing ball of an oil-impregnated paper condenser type transformer bushing. The insulating structure comprises a transformer oil cylinder cover, an ascending base, a measuring device, a bushing, an insulting screen, four fixing plates and four pin rolls. A pressure equalizing ball is arranged at the bottom end of the bushing. The ascending base is arranged at the opening position of the transformer oil cylinder cover. The measuring device is arranged at the top of the ascending base and is connected with the ascending base through a flange. The bushing vertically penetrates through the measuring device and is connected with the measuring device through a middle flange. The pressure equalizing ball at the bottom end of the bushing is arranged in the ascending base. Four fixing plates are arranged and evenly distributed on the bottom surface of a flange plate. Four pin rolls are arranged on the surfaces of the four fixing plates. Four L-shaped notches are arranged on the side wall of the top end of the insulating screen. The insulating screen is arranged in the ascending base and penetrates through the four L-shaped notches by the four pin rolls to be connected on the bottom surface of the flange plate. The lower portion of the bushing and the pressure equalizing ball are arranged in the insulating screen. In the insulating structure, the electric creep distance between a bushing charged body and a bushing grounding body is increased to allow a transformer to be compact in structure, dismounting efficiency is improved and production cost is reduced.
Description
Technical field
The utility model relates to a kind of insulation system of oil-impregnated paper condenser type transformer bushing voltage equalizing ball.
Background technology
The visual plant that the paper condenser transformer is electric energy transmitting in power industry AC input transformation system, 60～110kV voltage range belongs to middle pressure grade, this class electric equipment is the oil immersed type structure, the winding and the iron core that are transformer are placed in the iron fuel tank of sealing, be full of transformer insulation oil in case, the winding of transformer body inside is realized with the oil-impregnated paper condenser type transformer bushing be connected by being arranged on case lid of outside power transmission and transformation line, sleeve pipe is a kind of the have electrical strength of regulation and current-carrying outgoing line device of sufficient mechanical strength, sleeve pipe top contacts with extraneous air or cable outgoing apparatus oil, the middle part of sleeve pipe is fixed on measurement mechanism or case lid flange, the sleeve pipe bottom is arranged in the interior oil of fuel tank, and sleeve pipe bottom live part to grounded part as oil tank wall, flange, must there is certain insulation distance between the iron core folder, it is to be determined by transformer test voltage, different electric pressures is that rising with electric pressure strengthens to the distance of grounded part, and the size of insulation distance is relevant with the shape of the structure of sleeve pipe live part and grounded part again, the voltage equalizing ball of edge rounding is equipped with in the sleeve pipe lower end of 60kV level above, the shape of grounded part has wedge angle, the various shape such as circular arc or plane.
Usually the mounting means of sleeve pipe has two kinds, as shown in Figure 1, this mounting means middle sleeve lower end live part does not stretch into fuel tank internal, transformer outlet rising seat 1 is welded at case lid 2 opening parts, steel annulus 3 is welded in the inboard of case lid 2 opening parts, measurement mechanism 4 is fixed on the top of the seat 1 that raises, central flange 5 and measurement mechanism 4 upper surfaces of sleeve pipe 6 are fixed, sleeve pipe 6 lower vertical stretch in measurement mechanism 4 and rising seat 1, in the middle of sleeve pipe 6, through cable tail 7, sleeve pipe 6 lower end voltage equalizing balls 8 are positioned over rising seat 1 inside of case lid 2 tops.
As shown in Figure 2, this mounting means middle sleeve lower end live part stretches into fuel tank internal, transformer core upper clamping piece 9 is positioned at fuel tank, case lid flange 10 is welded at case lid 2 opening parts, measurement mechanism 4 is fixed on case lid flange 10 tops, and central flange 5 and measurement mechanism 4 upper surfaces of sleeve pipe 6 are fixed, and sleeve pipe 6 lower vertical stretch in measurement mechanism 4, in the middle of sleeve pipe 6, through cable tail 7, sleeve pipe 6 lower end voltage equalizing balls 8 are positioned over case lid 2 below fuel tank internals.
From said structure, can find out, Fig. 1 middle sleeve voltage equalizing ball 8 need to, according to the setting of different electric pressures, could meet the product testing requirement from distance L 13 and the voltage equalizing ball 8 of seat 1 wall that raises with the distance L 12 of steel annulus 3.The distance L 14 of Fig. 2 middle sleeve voltage equalizing ball 8 and core clamping 1, the distance L 15 of voltage equalizing ball 8 and case lid 2, in sleeve pipe 6 oil, live part C point and the distance L 16 of ground connection all need to meet the setting of different electric pressures, could meet the product testing requirement.In this case, 60～110kV level transformer of some low capacities is when design, because the device body size of transformer self is less than normal, make the employing amplification fuel tank of having to when laying out line apparatus be of a size of cost and meet required distance, make the transformer monnolithic case not compact, also improve the manufacturing cost of equipment simultaneously, caused unnecessary waste.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of insulation system of oil-impregnated paper condenser type transformer bushing voltage equalizing ball, this insulation system has effectively increased the sleeve pipe electrified body to the electric creepage distance between earth electrode, traditional sleeve voltage equalizing ball distance to the ground can be dwindled approximately to 1/4, make the transformer monnolithic case be tending towards compact, effectively reduced cost of goods manufactured, this insulation system dismounting simultaneously is very easy, has improved the dismounting efficiency of this insulation system.
For solving the problems of the technologies described above, the insulation system of the utility model oil-impregnated paper condenser type transformer bushing voltage equalizing ball comprises transformer oil tank cover, seat raises, measurement mechanism and bottom are provided with the sleeve pipe of voltage equalizing ball, the described seat that raises is located at the opening part of described transformer oil tank cover, described measurement mechanism is located at described rising seat top and is connected by ring flange, described sleeve pipe vertically penetrates described measurement mechanism and is connected with measurement mechanism by central flange, the voltage equalizing ball of described casing shoe is positioned at described rising seat, this structure also comprises the insulation screen, four fixed heads and four bearing pins, described four fixed heads are vertical at respectively described ring flange bottom surface along the circumferential direction uniform, described four bearing pins are vertical at respectively described four fixed head surfaces, described insulation screen top sidewall along the circumferential direction is laid with respectively four L shaped notches, described insulation screen is positioned at described rising seat and penetrates described four L shaped notches by described four bearing pins and is fixed in described ring flange bottom surface, described sleeve pipe bottom and voltage equalizing ball are positioned at described insulation screen.
Because the insulation system of the utility model oil-impregnated paper condenser type transformer bushing voltage equalizing ball has adopted technique scheme, be that this structure comprises transformer oil tank cover, seat raises, measurement mechanism and bottom are provided with the sleeve pipe of voltage equalizing ball, the seat that raises is located at the opening part of transformer oil tank cover, measurement mechanism is located at rising seat top and is connected by ring flange, sleeve pipe vertically penetrates measurement mechanism and is connected with measurement mechanism by central flange, the voltage equalizing ball of casing shoe is positioned at the seat that raises, this structure also comprises the insulation screen, four fixed heads and four bearing pins, four fixed heads are vertical at respectively ring flange bottom surface along the circumferential direction uniform, four bearing pins are vertical at respectively four fixed head surfaces, insulation screen top sidewall along the circumferential direction is laid with respectively four L shaped notches, the insulation screen is positioned to raise seat and penetrate four L shaped notches by four bearing pins and is fixed in the ring flange bottom surface, sleeve pipe bottom and voltage equalizing ball are positioned at the insulation screen.This insulation system has effectively increased the sleeve pipe electrified body to the electric creepage distance between earth electrode, traditional sleeve voltage equalizing ball distance to the ground can be dwindled approximately to 1/4, make the transformer monnolithic case be tending towards compact, effectively reduced cost of goods manufactured, this insulation system dismounting simultaneously is very easy, has improved the dismounting efficiency of this insulation system.
The accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation that traditional transformer sleeve pipe lower end live part does not stretch into fuel tank internal;
Fig. 2 is the structural representation that traditional transformer sleeve pipe lower end live part stretches into fuel tank internal;
The insulation system schematic diagram that Fig. 3 is the utility model oil-impregnated paper condenser type transformer bushing voltage equalizing ball.
Embodiment
As shown in Figure 3, the insulation system of the utility model oil-impregnated paper condenser type transformer bushing voltage equalizing ball comprises transformer oil tank cover 2, seat 1 raises, measurement mechanism 4 and bottom are provided with the sleeve pipe 6 of voltage equalizing ball 8, the described seat 1 that raises is located at the opening part of described transformer oil tank cover 2, described measurement mechanism 4 is located at described rising seat 1 top and is connected by ring flange 14, described sleeve pipe 6 vertically penetrates described measurement mechanism 4 and is connected with measurement mechanism 4 by central flange 5, the voltage equalizing ball 8 of described sleeve pipe 6 bottoms is positioned at described rising seat 1, this structure also comprises insulation screen 11, four fixed heads 12 and four bearing pins 13, described four fixed heads 12 are vertical at respectively described ring flange 14 bottom surfaces along the circumferential direction uniform, described four bearing pins 13 are vertical at respectively described four fixed head 12 surfaces, described insulation screen 11 top sidewalls along the circumferential direction are laid with respectively four L shaped notches 15, described insulation screen 11 is positioned at described rising seat 1 and penetrates described four L shaped notches 15 by described four bearing pins 13 and is fixed in described ring flange 14 bottom surfaces, described sleeve pipe 6 bottoms and voltage equalizing ball 8 are positioned at described insulation screen 11.The insulation screen of this insulation system can adopt the insulating material making such as insulating board, and it is shaped as cylindrical shape.
This structure can be arranged at the sleeve pipe outlet of 60～110kV paper condenser transformer, the seat inside center that raises is provided with the sleeve pipe with voltage equalizing ball, the seat that raises is inner is provided with the insulation screen near the wall place, the ring flange bottom face that the seat that raises connects with measurement mechanism is by there being the L shaped notch corresponding with insulation screen top with the fixed head of bearing pin to be connected, during installation, the bearing pin on fixed head is aimed in the import of L shaped notch, horizontally rotate a segmental arc along circumference after raising the insulation screen, then the screen that insulate falls to making bearing pin to enter the extreme position in L shaped notch, thereby the screen that makes to insulate is by the mode dismounting of knot that can be undone by a pull, mount and dismount very easy.Adopt the insulation screen effectively to increase the sleeve pipe electrified body to the electric creepage distance between earth electrode simultaneously, original voltage equalizing ball distance to the ground can be dwindled approximately to 1/4, make the transformer monnolithic case be tending towards compactness, effectively reduced cost of goods manufactured.
Claims (1)
1. the insulation system of an oil-impregnated paper condenser type transformer bushing voltage equalizing ball, comprise transformer oil tank cover, seat raises, measurement mechanism and bottom are provided with the sleeve pipe of voltage equalizing ball, the described seat that raises is located at the opening part of described transformer oil tank cover, described measurement mechanism is located at described rising seat top and is connected by ring flange, described sleeve pipe vertically penetrates described measurement mechanism and is connected with measurement mechanism by central flange, the voltage equalizing ball of described casing shoe is positioned at described rising seat, it is characterized in that: this structure also comprises the insulation screen, four fixed heads and four bearing pins, described four fixed heads are vertical at respectively described ring flange bottom surface along the circumferential direction uniform, described four bearing pins are vertical at respectively described four fixed head surfaces, described insulation screen top sidewall along the circumferential direction is laid with respectively four L shaped notches, described insulation screen is positioned at described rising seat and penetrates described four L shaped notches by described four bearing pins and is fixed in described ring flange bottom surface, described sleeve pipe bottom and voltage equalizing ball are positioned at described insulation screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553057 CN202957102U (en) | 2012-10-26 | 2012-10-26 | Insulating structure for pressure equalizing ball of oil-impregnated paper condenser type transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553057 CN202957102U (en) | 2012-10-26 | 2012-10-26 | Insulating structure for pressure equalizing ball of oil-impregnated paper condenser type transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957102U true CN202957102U (en) | 2013-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553057 Expired - Fee Related CN202957102U (en) | 2012-10-26 | 2012-10-26 | Insulating structure for pressure equalizing ball of oil-impregnated paper condenser type transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957102U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469935A (en) * | 2016-01-14 | 2016-04-06 | 天威保变(合肥)变压器有限公司 | Protective insulating cylinder for voltage-equalizing ball in transformer bushing oil |
| CN105469959A (en) * | 2016-01-29 | 2016-04-06 | 卧龙电气集团股份有限公司 | Insulating cylinder and transformer |
| CN109741923A (en) * | 2018-08-21 | 2019-05-10 | 西门子变压器（武汉）有限公司 | Transformer and its raising seat, plug unit and conductor adapting piece |
| CN114171265A (en) * | 2021-12-10 | 2022-03-11 | 天威保变(合肥)变压器有限公司 | Sleeve pipe voltage-sharing ball insulating cylinder mounting structure |
-
2012
- 2012-10-26 CN CN 201220553057 patent/CN202957102U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469935A (en) * | 2016-01-14 | 2016-04-06 | 天威保变(合肥)变压器有限公司 | Protective insulating cylinder for voltage-equalizing ball in transformer bushing oil |
| CN105469959A (en) * | 2016-01-29 | 2016-04-06 | 卧龙电气集团股份有限公司 | Insulating cylinder and transformer |
| CN105469959B (en) * | 2016-01-29 | 2018-06-15 | 卧龙电气集团股份有限公司 | Insulating cylinder and transformer |
| CN109741923A (en) * | 2018-08-21 | 2019-05-10 | 西门子变压器（武汉）有限公司 | Transformer and its raising seat, plug unit and conductor adapting piece |
| CN114171265A (en) * | 2021-12-10 | 2022-03-11 | 天威保变(合肥)变压器有限公司 | Sleeve pipe voltage-sharing ball insulating cylinder mounting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20161026 |