CN202196656U - Indoor introducing technology intelligent case change special strut type voltage transformer - Google Patents
Indoor introducing technology intelligent case change special strut type voltage transformer Download PDFInfo
- Publication number
- CN202196656U CN202196656U CN2011202792613U CN201120279261U CN202196656U CN 202196656 U CN202196656 U CN 202196656U CN 2011202792613 U CN2011202792613 U CN 2011202792613U CN 201120279261 U CN201120279261 U CN 201120279261U CN 202196656 U CN202196656 U CN 202196656U
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- voltage transformer
- iron core
- base plate
- installation base
- indoor
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Abstract
The utility model provides an indoor introducing technology intelligent case change special strut type voltage transformer. The safe operation of the voltage transformer can be realized while no protection measures are provided for the front end of the voltage transformer. The voltage transformer comprises five parts, namely an insulating protection member, a high-voltage primary winding, a low-voltage secondary winding, an iron core and an installation base plate. The insulating protection member is manufactured through the indoor vacuum casting of epoxy resin. A circular ring-shaped umbrella wall is casted surrounding the two line-outgoing terminals of the high-voltage primary winding arranged at the upper portion of the voltage transformer. Nine protection plates are also casted at the circumferences of the two line-outgoing terminals of the high-voltage primary winding arranged at the upper portion of the voltage transformer. The iron core adopting a rectangular structure is rolled through the monolith of a cold rolled silicon steel sheet 30ZH120. One end of the installation base plate at the bottom of a product is fixed to the iron core inside the voltage transformer and the other end of the installation base plate is led out through the two sides of the bottom of the insulating protection member. The bottom of a casting body and the lower surface of the installation base plate are respectively and uniformly sprayed with a layer of thick aluminum powders with the thickness thereof to be 0.8 mm.
Description
Technical field
The utility model belongs to electric power system high voltage appearance potential device, in 10kV and following system with non effectively earth ed neutral (insulation system and resistance grounded system), does the operation power supply and uses.
Background technology
At present, common indoor totally-enclosed column support type voltage transformer, mostly its insulation system is insulating paper and transformer oil compound inslation, inflammable and explosive, contaminated environment, and oil impregnate, oil leakage phenomenon appear easily, be difficult for being directly installed on load center.Later development the totally-enclosed column support type voltage transformer of poured with epoxy resin, adopt the insulating protector of indoor epoxy resin as instrument transformer, accomplished no oiling; But traditional product inner core adopts laminated structure; Seam is many, and loss is big, causes product anti overvoltage ability; And volume is big, is difficult in the case of miniaturization becomes, installing and using.
Summary of the invention
In order to overcome existing oil immersed type voltage transformer as insulating protector, oil impregnate appears easily, leakage of oil, inflammable and explosive; Contaminated environment, and the deficiency of poured with epoxy resin dry type product anti overvoltage ability, the utility model provides a kind of indoor imported technology intelligent box to become special-purpose column support type voltage transformer, and this product adopts German MWB instrument transformer to introduce technology and produces; Use is in the SF6 gas cabinet, and it is safety not only, and non-maintaining; Product height is low in addition, and volume is little, and the anti overvoltage ability is strong; Considerably beyond the standard-required of national voltage transformer, electric property is reliable and stable, for intelligent box becomes special product.
The utility model solves the technical scheme that its technical problem adopted: it is made up of insulating protector, winding of high pressure, low pressure secondary winding, iron core, installation base plate five major parts; Insulating protector adopts to pour into a mould under the indoor import epoxide resin vacuum condition and forms; Pour into the umbrella wall of one annular around two outlet terminals of a winding of top high pressure; The cross section of umbrella wall is square; The periphery of two outlet terminals pours into the protective plate of nine road strips, in limited space, farthest increased between two outlet terminals along the face creepage distance, improved the dielectric strength between two outlet terminals; The low pressure secondary winding is wound on the stem stem of iron core, and winding of high pressure is sleeved on the outside of low pressure secondary winding, and leaves the gap of certain dielectric strength; It is oval rectangle iron core that iron core is designed to roll into the cross section by import high-quality cold-reduced silicon sheet 30ZH120 material all in one piece by traditional laminated structure, and activity coefficient is big, and excitation loss is low; Eddy current loss is few; The overvoltage factor is brought up to 3.2 times by 1.2 times of national standard, has improved the anti overvoltage level of iron core to a great extent, and voltage-current characteristic is capacitive; Reach at the voltage transformer front end and have no under the situation of safeguard measure, can purpose of safe operation; In addition in order to reduce the height of product; The mentality of designing that breaks traditions; The device body of the entire product of this utility model changes traverse into by original standing up, and a winding of conventional products places the positive middle and upper part of product; And the utility model places the side of product, and this innovation has reduced the height of product to the full extent; Installation base plate one end of product bottom is fixed on the inner iron core of device body, and the other end is drawn from the both sides, bottom of insulating protector, has promptly played the effect that installs and fixes product, plays the effect of inner lifting iron core and secondary winding again; The bottom of this utility model pour mass, and the lower surface that base plate is installed sprays the thick aluminium powder of one deck 0.8mm uniformly, discharges over the ground to avoid winding of product internal high pressure.
The beneficial effect of the utility model is, the design of two kinds of special shape insulating protectors, both increased product along the face creepage distance; Improved the product dielectric strength again, putting and the improvement of iron core of device body improved the overvoltage factor to a great extent; Voltage-current characteristic is capacitive; The anti overvoltage ability is strong, can tackle the overvoltage that produces because of a variety of causes in the network system, and the electrion phenomenon has been avoided in the employing of aluminium-plated technology; This volume miniaturization, product stable and reliable for performance are suitable more to be installed in the intelligent box change.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the front view of the utility model.
Fig. 2 is the right view of the utility model.
Fig. 3 is the vertical view of the utility model.
1. insulating protectors among the figure, 2. outlet terminal, 3. winding of high pressure, 4. low pressure secondary winding, 5. iron core, 6. secondary outlet terminal, 7. installation base plate, 8. aluminium powder, 9. umbrella wall, 10. protective plate.
Embodiment
Fig. 1, Fig. 2, embodiment illustrated in fig. 3 in, low pressure secondary winding (4) is wound on the stem stem of rectangle iron core (5), the cross section of iron core (5) is oval; A winding of high pressure (3) is sleeved on the outside of low pressure secondary winding (4), and leaves the space of certain dielectric strength, and two outlet terminals (2) of a winding of high pressure (3) are drawn the rear side of taking back on the top of product; The secondary outlet terminal (6) of low pressure secondary winding (4) is drawn out to the lower right side, back partially of product through installation base plate (7) bosom one circular hole place; A winding of high pressure (3), low pressure secondary winding (4), iron core (5) and a secondary outlet are insulated protective (1) and are encapsulated in inside; Insulating protector (1) forms by pouring into a mould under the indoor import epoxide resin vacuum condition; Pour into the umbrella wall (9) of one annular around two outlet terminals (2) of a winding of top high pressure; The cross section of umbrella wall (9) is square, and the periphery of two outlet terminals pours into the protective plate (10) of nine road strips, under the situation that does not influence installation; Both increased between two outlet terminals (2) along the face creepage distance, improved dielectric strength again; Base plate (7) is installed to be fixed on the inner iron core (5) of device body; Draw from both sides, pour mass bottom the bottom, so that product is installed, discharges over the ground in order to prevent a sub-high pressure winding (3); The bottom of pour mass comprises that the lower surface that base plate (7) is installed sprays the thick aluminium powder (8) of one deck 0.8 uniformly.
Claims (3)
1. an indoor imported technology intelligent box becomes special-purpose column support type voltage transformer, and it is made up of insulating protector, winding of high pressure, low pressure secondary winding, iron core, installation base plate five major parts; It is characterized in that: insulating protector adopts indoor epoxide resin vacuum cast to form, and pours into the umbrella wall of one annular around two outlet terminals of a winding of top high pressure, and the periphery of two outlet terminals pours into nine road protective plates; Iron core adopts cold-reduced silicon sheet 30ZH120 material all in one piece to roll and forms; Installation base plate one end of product bottom is fixed on the inner iron core of device body, and the other end is drawn from the both sides, bottom of insulating protector; The bottom of pour mass, and the lower surface of installation base plate is sprayed the thick aluminium powder of one deck 0.8mm uniformly.
2. indoor imported technology intelligent box according to claim 1 becomes special-purpose column support type voltage transformer, it is characterized in that: the umbrella wall of annular, its cross section is square, the elongated shape of nine road protective plates.
3. indoor imported technology intelligent box according to claim 1 becomes special-purpose column support type voltage transformer, it is characterized in that: iron core is that whole material rolls into rectangle, the cross section ovalize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202792613U CN202196656U (en) | 2011-07-28 | 2011-07-28 | Indoor introducing technology intelligent case change special strut type voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202792613U CN202196656U (en) | 2011-07-28 | 2011-07-28 | Indoor introducing technology intelligent case change special strut type voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196656U true CN202196656U (en) | 2012-04-18 |
Family
ID=45951557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202792613U Expired - Fee Related CN202196656U (en) | 2011-07-28 | 2011-07-28 | Indoor introducing technology intelligent case change special strut type voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325558A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | High-altitude high-capacity indoor all-insulation voltage transformer |
-
2011
- 2011-07-28 CN CN2011202792613U patent/CN202196656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325558A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | High-altitude high-capacity indoor all-insulation voltage transformer |
| CN103325558B (en) * | 2013-07-17 | 2015-10-21 | 国家电网公司 | The all insulation voltage transformer that a kind of high-altitude high-capacity is indoor |
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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 |
Granted publication date: 20120418 Termination date: 20200728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |