CN201498329U - 35 kV resin-casting dry-type transformer - Google Patents
35 kV resin-casting dry-type transformer Download PDFInfo
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- CN201498329U CN201498329U CN2009200972417U CN200920097241U CN201498329U CN 201498329 U CN201498329 U CN 201498329U CN 2009200972417 U CN2009200972417 U CN 2009200972417U CN 200920097241 U CN200920097241 U CN 200920097241U CN 201498329 U CN201498329 U CN 201498329U
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- tension coil
- type transformer
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Abstract
The utility model relates to a 35 kV resin-casting dry-type transformer. A multi-section multi-layer cylindrical structure is adopted, and a low-tension coil is higher than a high-tension coil; iron cores stacked up by connecting pieces are sequentially connected with iron core yokes, high-tension and low-tension lower clamping pieces and insulating cushion blocks, the low-tension coil and the high-tension coil are sheathed outside an iron core limb, the iron core yokes are inserted, and high-tension and low-tension upper clamping pieces and the insulating cushion blocks are assembled and then tightly pressed on the high-tension coil and the low-tension coil by press studs to form a down-lead assembly structure. The 35 kV resin-casting dry-type transformer has the following advantages: firstly, by adopting the multi-section multi-layer cylindrical structure, the inner field strength of each coil can be uniformly distributed; secondly, the phenomenon of electric field concentration is avoided, partial discharge energy is low, and the electric strength is high; thirdly, by adopting the design scheme that the low-tension coil is higher than the high-tension coil, materials and energy are saved, and the volume is reduced; and fourthly, by combining the insulating cushion blocks in a stepped way, the height of the iron core limb is reduced, silicon steel sheets are saved, and the external dimension of a product is reduced.
Description
(1) technical field:
The utility model relates to a kind of dry-type transformer, and particularly a kind of city net or rural power grids of belonging to are with novel 35kV grade resins casting dry type transformer.
(2) background technology:
Transformation and amplification along with city net and rural power grids, the consumption of 35kV grade resins casting dry type transformer is in continuous increase, satisfying in country and the industry standard basis for establishing, energy-conservation, noise reduction, the 35kV grade resins casting dry type transformer that reduces volume receive praises from customers.At present, known method for designing is to adopt identical common multi-layer cylinder formula loop construction of high-voltage coil and low-voltage coil height and higher plane cushion block, and the product consumptive material is many, and structure is not compact, and floor space is big.
(3) summary of the invention:
The purpose of this utility model is to design a kind of 35kV grade resins casting dry type transformer, it adopts unique loop construction and high creepage distance cushion block, has improved Electric Field Distribution, makes properties of product leading domestic, energy-conservation, noise reduction, little, the compact conformation of volume, and safe and reliable.
The technical solution of the utility model: a kind of 35kV grade resins casting dry type transformer, comprise iron core, high-voltage coil and low-voltage coil, cross-over block, base and shell, it is characterized in that said high-voltage coil and low-voltage coil adopts the multisectional multilayer cylinder mode, the low-voltage coil height is higher than the high-tension coil height; Connect yoke unshakable in one's determination, high-low pressure lower clamping piece, cross-over block successively according to the iron core behind the connector closed assembly, and then low-voltage coil, high-tension coil be placed in outside the core limb, plug yoke unshakable in one's determination, assemble high-low pressure upper clamping piece, cross-over block then and be lead assembling mechanism according to pressing nail to be pressed on the high and low pressure coil.
Above-mentioned said connector unshakable in one's determination is core through screw rod and other screw rod.
Above-mentioned said cross-over block adopts the staging pack structure, comprises combination upward cushion block and combination lower cushion block, and combined pad contains two ladder cushion blocks of concavo-convex cooperation at least, the groove that the cushion block surface has staging pack to produce.
Assembling process of the present utility model is: after closed assembly unshakable in one's determination is good yoke unshakable in one's determination and high-low pressure upper clamping piece are pulled down, put the staging pack lower cushion block, be placed in low-voltage coil, high-tension coil outside the core limb successively then, cushion block and according to pressing nail to be pressed on the high and low pressure coil on dowel heart yoke, high-low pressure upper clamping piece, the staging pack is lead assembling mechanism at last.
Superiority of the present utility model is: (1) coil adopts special multisectional multilayer cylinder mode, makes the field strength distribution of coil inside even; (2) product does not have the electric field concentration phenomenon, and partial discharge quantity is little, the electric strength height; (3) coil to the main insulating structure of yoke unshakable in one's determination up and down depends on the height of high pressure 35kV coil, and low pressure 0.4kV coil to the main insulating structure of yoke unshakable in one's determination up and down can be far smaller than high-tension coil to the main insulating structure of yoke unshakable in one's determination up and down, the utility model product adopts the low-voltage coil height to be higher than the design of the height of high-tension coil, both material-saving, energy-conservation, dwindled volume again; (4) cross-over block adopts the polylith staging pack, forms a plurality of grooves on the cushion block surface, and the surface creepage of cushion block apart from having increased by 1/3, has been reduced the height of core limb, has saved silicon steel sheet, has dwindled the overall dimensions of product.
(4) description of drawings:
Fig. 1 is the multisectional multilayer cylindrical layer winding structural representation of the related a kind of 35kV grade resins casting dry type transformer of the utility model;
Fig. 2 is the structural representation of the high creepage distance cross-over block in staging pack surface of the related a kind of 35kV grade resins casting dry type transformer of the utility model;
Fig. 3 is the overall structure diagrammatic sketch of the related a kind of 35kV grade resins casting dry type transformer of the utility model;
Wherein, 1 is unshakable in one's determination, 1a is a core through screw rod unshakable in one's determination, 1b is other screw rod, 2 is yoke unshakable in one's determination, and 3 is the high-low pressure upper clamping piece, and 4 for pressing nail, 5 is cross-over block, 5a is a cushion block on the staging pack cushion block, and 5b is a staging pack cushion block lower cushion block, and 5-1 is staging pack cushion block I (having the grafting recess), 5-2 is staging pack cushion block II (has the grafting recess and have the grafting protuberance simultaneously), 5-3 is staging pack cushion block III (having the grafting protuberance), and 6 is the groove on cushion block surface, and 7 is high, low-voltage coil, 7-1 is high, low-voltage coil head and the tail head lead-in wire, 7-2 is high, the low-voltage coil wire turn is arranged and each section insulation body, and 7-3 is high, low-voltage coil ectonexine insulator, 7-4 are high, the low-voltage coil shunting tap, 8 is the high-low pressure lower clamping piece, and 9 is base and shell.
(5) embodiment:
Embodiment: a kind of 35kV grade resins casting dry type transformer (see figure 3), comprise iron core 1, high-voltage coil and low-voltage coil 7, cross-over block 5, base and shell 9, said high-voltage coil and low-voltage coil 7 (see figure 1)s adopt the multisectional multilayer cylinder mode, and the low-voltage coil height is higher than the high-tension coil height; Connect yoke 2 unshakable in one's determination, high-low pressure lower clamping piece 8, cross-over block 5 (see figure 2)s successively according to the iron core behind the connector closed assembly 1, and then low-voltage coil, high-tension coil 7 be placed in outside the core limb, plug yoke 2 unshakable in one's determination, assemble high-low pressure upper clamping piece 3, cross-over block 5 then and be lead assembling mechanism according to pressing nail 4 to be pressed on the high and low pressure coil 7.
Above-mentioned said connector unshakable in one's determination is core through screw rod 1a and other screw rod 1b.
Above-mentioned said cross-over block 5 adopts the staging pack structure, comprises combination upward cushion block 5a and combination lower cushion block 5b, and combined pad contains two ladder cushion blocks of concavo-convex cooperation, the groove 6 that the cushion block surface has staging pack to produce.(see figure 2)
Claims (3)
1. a 35kV grade resins casting dry type transformer comprises iron core, high-voltage coil and low-voltage coil, cross-over block, base and shell, it is characterized in that said high-voltage coil and low-voltage coil adopts the multisectional multilayer cylinder mode, and the low-voltage coil height is higher than the high-tension coil height; Connect yoke unshakable in one's determination, high-low pressure lower clamping piece, cross-over block successively according to the iron core behind the connector closed assembly, and then low-voltage coil, high-tension coil be placed in outside the core limb, plug yoke unshakable in one's determination, assemble high-low pressure upper clamping piece, cross-over block then and be lead assembling mechanism according to pressing nail to be pressed on the high and low pressure coil.
2. a kind of 35kV grade resins casting dry type transformer according to claim 1 is characterized in that said connector unshakable in one's determination is core through screw rod and other screw rod.
3. a kind of 35kV grade resins casting dry type transformer according to claim 1, it is characterized in that said cross-over block adopts the staging pack structure, comprise combination upward cushion block and combination lower cushion block, combined pad contains two ladder cushion blocks of concavo-convex cooperation at least, the groove that the cushion block surface has staging pack to produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200972417U CN201498329U (en) | 2009-06-19 | 2009-06-19 | 35 kV resin-casting dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200972417U CN201498329U (en) | 2009-06-19 | 2009-06-19 | 35 kV resin-casting dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498329U true CN201498329U (en) | 2010-06-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200972417U Expired - Lifetime CN201498329U (en) | 2009-06-19 | 2009-06-19 | 35 kV resin-casting dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498329U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035401A (en) * | 2012-12-21 | 2013-04-10 | 安徽神虹变压器有限公司 | Gluing, rust prevention and curing method for end face of iron core of transformer |
| CN103346003A (en) * | 2013-07-17 | 2013-10-09 | 国家电网公司 | Novel dry type electric transformer low-voltage coil structure |
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
| CN106158353A (en) * | 2016-08-25 | 2016-11-23 | 宁波奥克斯高科技有限公司 | A kind of winding method of high-tension coil |
-
2009
- 2009-06-19 CN CN2009200972417U patent/CN201498329U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035401A (en) * | 2012-12-21 | 2013-04-10 | 安徽神虹变压器有限公司 | Gluing, rust prevention and curing method for end face of iron core of transformer |
| CN103346003A (en) * | 2013-07-17 | 2013-10-09 | 国家电网公司 | Novel dry type electric transformer low-voltage coil structure |
| CN103346003B (en) * | 2013-07-17 | 2016-01-06 | 国家电网公司 | Dry-type power transformer low pressure 10kV coil new construction |
| CN105719814A (en) * | 2016-04-08 | 2016-06-29 | 国家电网公司 | High voltage coil which is applicable to a dry type transformer of more than 35kV and contains an airway structure |
| CN106158353A (en) * | 2016-08-25 | 2016-11-23 | 宁波奥克斯高科技有限公司 | A kind of winding method of high-tension coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |