CN104882258A - Epoxy pouring dry-type transformer cushion block structure - Google Patents
Epoxy pouring dry-type transformer cushion block structure Download PDFInfo
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- CN104882258A CN104882258A CN201510364845.3A CN201510364845A CN104882258A CN 104882258 A CN104882258 A CN 104882258A CN 201510364845 A CN201510364845 A CN 201510364845A CN 104882258 A CN104882258 A CN 104882258A
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- cushion block
- voltage coil
- type transformer
- dry
- lower cushion
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Abstract
The invention discloses an epoxy pouring dry-type transformer cushion block structure. The epoxy pouring dry-type transformer cushion block structure comprises an upper cushion block and a lower cushion block which are both of an umbrella-skirt structure, wherein a rectangular long groove is formed in the upper surface of the upper cushion block, a rectangular pressing block is arranged in the rectangular long groove, an upper clamping groove used for fixing an insulation barrel between a high-voltage coil and a low-voltage coil is formed in the lower portion of the upper cushion block, a long groove hole is formed in the upper surface of the lower cushion block, and a lower clamping groove used for fixing the insulation barrel between the high-voltage coil and the low-voltage coil is formed in the lower portion of the lower cushion block. By means of the structure, the universality of a mould is improved, the production period of the product is guaranteed, and the cost is saved.
Description
Technical field
The invention belongs to transformer manufacture technology, relate to a kind of epoxy cast dry transformer cushion block structure.
Background technology
The cushion block structure of conventional epoxies dry-type transformer as shown in Figure 1, in Fig. 1,31 are upper cushion blocks, 32 are lower cushion blocks, 33 are cushion pads, 34 are insulating cylinders, 35 are pressure bowls, 36 are upper clamping pieces, 37 are lower clamping pieces, 38 are nail pressings, 39 are high-tension coils, 40 is low-voltage coils.Fig. 2-1 to Fig. 2-3 is structural representations of upper cushion block in conventional epoxies dry-type transformer, Fig. 3-1 to Fig. 3-3 is structural representations of lower cushion block in conventional epoxies dry-type transformer, and Fig. 4-1 to Fig. 4-3 is structural representations of cushion pad in conventional epoxies dry-type transformer.During assembling, lower cushion block is upside down in the upper surface of lower clamping piece, with dowel hole fixed position.Lower cushion block places cushion pad, otch on cushion pad, notch is in order to the insulating cylinder between fixing high-voltage coil and low-voltage coil.Then place upper cushion block, upper cushion block upper surface has a circular recess, built-in pressure bowl.Finally compress pressure bowl with the nail pressing be arranged on upper clamping piece, fixed coil, ensures the electric insulation distance between high-voltage coil and low-voltage coil.The cushion block structure design of early stage dry-type transformer, substantially based on this structure, through use for many years, proves that this structure is reliably feasible.
In recent years, along with the innovation progress of transformer device structure design, loop construction is progressively to Long Circle transition, and core-diameter progressively diminishes, thus the distance that result between coil and folder from top to bottom is more and more nearer, and during power frequency withstand test, creepage phenomenon occurs repeatedly.In addition, the fluctuating range of material price is increasing, and this just requires the main material ratio that will adjust transformer when design of transformer in real time, to reach best cost ratio.The problem that structural adjustment directly causes is exactly the annex of dry-type transformer, and the variation frequency of such as cushion block structure increases thereupon.And dry-type transformer upper lower cushion block used is all formed by die casting, variation structure just must change casting mold, thus result in a large amount of moulds and overstock, and drastically increases the cost of annex, has had a strong impact on renewal speed and the delivery cycle of product.
Summary of the invention
In order to overcome prior art Problems existing, the object of this invention is to provide a kind of epoxy cast dry transformer cushion block structure, adopting the versatility that this arrangement enhances mould, ensure that the production cycle of product, saved cost.
Object of the present invention is achieved through the following technical solutions:
A kind of epoxy cast dry transformer cushion block structure, comprises cushion block and lower cushion block, it is characterized in that: described upper cushion block and lower cushion block are umbrella skirt construction; Be provided with rectangle elongated slot at upper cushion block upper surface, in rectangle elongated slot, be provided with rectangle briquetting, be provided with the upper draw-in groove being used for fixing insulating cylinder between high-voltage coil and low-voltage coil in upper cushion block bottom; Be provided with long slot bore at lower cushion block upper surface, be provided with the lower bayonet slot being used for fixing insulating cylinder between high-voltage coil and low-voltage coil in lower cushion block bottom.
In the present invention, be provided with the buffer plate for regulating height at upper cushion block and lower cushion block bottom.Buffer plate is equipped with in the upper draw-in groove both sides of upper cushion block; Buffer plate is equipped with in the lower bayonet slot both sides of lower cushion block.
Upper cushion block bottom is downward, and lower cushion block bottom is upwards arranged in opposite directions, and between high-voltage coil and low-voltage coil insulating cylinder between upper draw-in groove and lower bayonet slot.
The present invention changes lower cushion block and cushion pad structure, and during for industrial frequency withstand voltage, the problem of creepage phenomenon, mainly because insulation distance is less than normal, rainy weather air humidity is comparatively large, thus produces electric discharge phenomena.The present invention uses the umbrella skirt construction of oil immersion type transformer porcelain bottle, is designed to by upper lower cushion block be with notch arrangement, and add creepage distance, thus solve this problem, this structure is also applied in the dry change of voltage levels simultaneously.
Upper cushion block, changes former circular recess into rectangle elongated slot, and change former circle pressure bowl into rectangle briquetting, cushion block bottom increases the upper draw-in groove in order to insulating cylinder between fixing high-voltage coil and low-voltage coil.Lower cushion block, changes former dowel hole into long slot bore, and cushion block bottom increases the lower bayonet slot in order to insulating cylinder between fixing high-voltage coil and low-voltage coil equally.Cushion pad is then consistent with cushion block by width, and thickness divides the buffer plate of different brackets to replace.
When coil height changes, by regulating the block number of buffer plate to regulate thickness, thus ensure that the relatively fixing of lower cushion block height.When changing at coil pressure-bearing position, lower cushion block position location is carried out front and back by long slot bore and is regulated, upper cushion block rectangle briquetting regulates by carrying out front and back in the notch of cushion block, abundant to ensure upper lower cushion block uniform force, upper lower bayonet slot then ensures that the problem of insulating cylinder can not change, fully to ensure electric clearance.
In production practices, whole dry-type transformer series capacity only needs a few mold just can meet Production requirement, and when transformer coil physical dimension changes, casting mold is originally still general.Invention increases the versatility of mould, ensure that the production cycle of product, saved cost, create a large amount of economic and social benefits.
Accompanying drawing explanation
Fig. 1 is the cushion block structure schematic diagram of conventional epoxies dry-type transformer.
Fig. 2-1 is the structural representation of upper cushion block in conventional epoxies dry-type transformer.
Fig. 2-2 is right TV structure schematic diagrames of upper cushion block in conventional epoxies dry-type transformer.
Fig. 2-3 is plan structure schematic diagrames of upper cushion block in conventional epoxies dry-type transformer.
Fig. 3-1 is the structural representation of lower cushion block in conventional epoxies dry-type transformer.
Fig. 3-2 is right TV structure schematic diagrames of lower cushion block in conventional epoxies dry-type transformer.
Fig. 3-3 is plan structure schematic diagrames of lower cushion block in conventional epoxies dry-type transformer.
Fig. 4-1 is the structural representation of cushion pad in conventional epoxies dry-type transformer.
Fig. 4-2 is right TV structure schematic diagrames of cushion pad in conventional epoxies dry-type transformer.
Fig. 4-3 is plan structure schematic diagrames of cushion pad in conventional epoxies dry-type transformer.
Fig. 5 is structural representation of the present invention.
Fig. 6-1 is the structural representation of upper cushion block in the present invention.
Fig. 6-2 is right TV structure schematic diagrames of upper cushion block in the present invention.
Fig. 6-3 is plan structure schematic diagrames of upper cushion block in the present invention.
Fig. 7-1 is the structural representation of lower cushion block in the present invention.
Fig. 7-2 is right TV structure schematic diagrames of lower cushion block in the present invention.
Fig. 7-3 is plan structure schematic diagrames of lower cushion block in the present invention.
Fig. 8-1 is the structural representation of cushion pad in the present invention.
Fig. 8-2 is plan structure schematic diagrames of buffer plate in the present invention.
Embodiment
A kind of epoxy cast dry transformer cushion block structure, see Fig. 5, in Fig. 5,1 be upper cushion block, 2 are lower cushion blocks, 3 are buffer plates, 4 are insulating cylinders, 6 are upper clamping pieces, 7 are lower clamping pieces, 8 are nail pressings, 9 are high-tension coils, 10 are low-voltage coils, 11 are rectangle elongated slots, 12 are rectangle briquettings, 13 are upper draw-in grooves, 21 are long slot bores, 23 is lower bayonet slots.This structure comprises cushion block 1 and lower cushion block 2, and upper cushion block and lower cushion block are umbrella skirt construction; Be provided with rectangle elongated slot 11 at upper cushion block upper surface, in rectangle elongated slot 11, be provided with rectangle briquetting 12, be provided with the upper draw-in groove 13 being used for fixing insulating cylinder 4 between high-voltage coil and low-voltage coil in upper cushion block bottom; Be provided with long slot bore 21 at lower cushion block 2 upper surface, be provided with the lower bayonet slot 23 being used for fixing insulating cylinder 4 between high-voltage coil and low-voltage coil in lower cushion block bottom.
Fig. 6-1 is the structural representation of upper cushion block in the present invention.Fig. 6-2 is right TV structure schematic diagrames of upper cushion block in the present invention.Fig. 6-3 is plan structure schematic diagrames of upper cushion block in the present invention.Fig. 7-1 is the structural representation of lower cushion block in the present invention.Fig. 7-2 is right TV structure schematic diagrames of lower cushion block in the present invention.Fig. 7-3 is plan structure schematic diagrames of lower cushion block in the present invention.Fig. 8-1 is the structural representation of cushion pad in the present invention.Fig. 8-2 is plan structure schematic diagrames of buffer plate in the present invention.The buffer plate 3 for regulating height is provided with at upper cushion block and lower cushion block bottom.Buffer plate is equipped with in the upper draw-in groove both sides of upper cushion block; Buffer plate is equipped with in the lower bayonet slot both sides of lower cushion block.Upper cushion block bottom is downward, and lower cushion block bottom is upwards arranged in opposite directions, and between high-voltage coil and low-voltage coil insulating cylinder between upper draw-in groove and lower bayonet slot.
The present invention uses the umbrella skirt construction of oil immersion type transformer porcelain bottle, is designed to by upper lower cushion block be with notch arrangement, and add creepage distance, this structure is also applied in the dry change of voltage levels simultaneously.Upper cushion block, changes former circular recess into rectangle elongated slot, and change former circle pressure bowl into rectangle briquetting, cushion block bottom increases the upper draw-in groove in order to insulating cylinder between fixing high-voltage coil and low-voltage coil.Lower cushion block, changes former dowel hole into long slot bore, and cushion block bottom increases the lower bayonet slot in order to insulating cylinder between fixing high-voltage coil and low-voltage coil equally.Buffer plate is then consistent with cushion block by width, and thickness divides the buffer plate of different brackets to replace.
When coil height changes, by regulating the block number of buffer plate to regulate thickness, thus ensure that the relatively fixing of lower cushion block height.When changing at coil pressure-bearing position, lower cushion block position location is carried out front and back by long slot bore and is regulated, upper cushion block rectangle briquetting regulates by carrying out front and back in the notch of cushion block, abundant to ensure upper lower cushion block uniform force, upper lower bayonet slot then ensures that the problem of insulating cylinder can not change, fully to ensure electric clearance.
Claims (4)
1. an epoxy cast dry transformer cushion block structure, comprises cushion block (1) and lower cushion block (2), it is characterized in that: described upper cushion block (1) and lower cushion block (2) are umbrella skirt construction; Be provided with rectangle elongated slot (11) at upper cushion block (1) upper surface, in rectangle elongated slot (11), be provided with rectangle briquetting (12), be provided with the upper draw-in groove (13) being used for fixing insulating cylinder between high-voltage coil and low-voltage coil in upper cushion block (1) bottom; Be provided with long slot bore (21) at lower cushion block (2) upper surface, be provided with the lower bayonet slot (23) being used for fixing insulating cylinder between high-voltage coil and low-voltage coil in lower cushion block (2) bottom.
2. epoxy cast dry transformer cushion block structure according to claim 1, is characterized in that: be provided with the buffer plate (3) for regulating height at upper cushion block (1) and lower cushion block (2) bottom.
3. epoxy cast dry transformer cushion block structure according to claim 1, is characterized in that: be equipped with buffer plate (3) in upper draw-in groove (13) both sides of upper cushion block (1); Buffer plate (3) is equipped with in lower bayonet slot (23) both sides of lower cushion block (2).
4. epoxy cast dry transformer cushion block structure according to claim 1, it is characterized in that: upper cushion block (1) bottom is downward, lower cushion block (2) bottom is upwards arranged in opposite directions, and between high-voltage coil and low-voltage coil, insulating cylinder is positioned between draw-in groove (13) and lower bayonet slot (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364845.3A CN104882258A (en) | 2015-06-26 | 2015-06-26 | Epoxy pouring dry-type transformer cushion block structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364845.3A CN104882258A (en) | 2015-06-26 | 2015-06-26 | Epoxy pouring dry-type transformer cushion block structure |
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| CN104882258A true CN104882258A (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510364845.3A Pending CN104882258A (en) | 2015-06-26 | 2015-06-26 | Epoxy pouring dry-type transformer cushion block structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010695A (en) * | 2017-11-28 | 2018-05-08 | 山东泰开变压器有限公司 | Single-phase autotransformer based on resistance to shorting |
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| CN2773873Y (en) * | 2005-03-22 | 2006-04-19 | 济南志友集团股份有限公司 | Coil clamp device |
| CN101930827A (en) * | 2010-09-13 | 2010-12-29 | 无锡亿能电力设备有限公司 | Pad device for transformer |
| CN102054571A (en) * | 2010-11-19 | 2011-05-11 | 济南济变志亨电力设备有限公司 | Dry type power transformer with voltage ratio of 33/22kV voltage level |
| KR20110111643A (en) * | 2010-04-05 | 2011-10-12 | 한양전기공업(주) | The method of coil for adhesive insulating paper of transformer |
| CN202084402U (en) * | 2011-05-09 | 2011-12-21 | 山东临清益和变压器有限公司 | Insulating padding block for dry type transformer |
| CN203325669U (en) * | 2013-07-02 | 2013-12-04 | 山东省金曼克电气集团股份有限公司 | Elastic compressing device for coil of dry-type transformer |
| CN104091683A (en) * | 2014-06-19 | 2014-10-08 | 国家电网公司 | Dry-type transformer body insulation structure adopting combined cushion blocks |
| CN204668115U (en) * | 2015-06-26 | 2015-09-23 | 镇江天力变压器有限公司 | A kind of epoxy cast dry transformer cushion block structure |
-
2015
- 2015-06-26 CN CN201510364845.3A patent/CN104882258A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773873Y (en) * | 2005-03-22 | 2006-04-19 | 济南志友集团股份有限公司 | Coil clamp device |
| KR20110111643A (en) * | 2010-04-05 | 2011-10-12 | 한양전기공업(주) | The method of coil for adhesive insulating paper of transformer |
| CN101930827A (en) * | 2010-09-13 | 2010-12-29 | 无锡亿能电力设备有限公司 | Pad device for transformer |
| CN102054571A (en) * | 2010-11-19 | 2011-05-11 | 济南济变志亨电力设备有限公司 | Dry type power transformer with voltage ratio of 33/22kV voltage level |
| CN202084402U (en) * | 2011-05-09 | 2011-12-21 | 山东临清益和变压器有限公司 | Insulating padding block for dry type transformer |
| CN203325669U (en) * | 2013-07-02 | 2013-12-04 | 山东省金曼克电气集团股份有限公司 | Elastic compressing device for coil of dry-type transformer |
| CN104091683A (en) * | 2014-06-19 | 2014-10-08 | 国家电网公司 | Dry-type transformer body insulation structure adopting combined cushion blocks |
| CN204668115U (en) * | 2015-06-26 | 2015-09-23 | 镇江天力变压器有限公司 | A kind of epoxy cast dry transformer cushion block structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108010695A (en) * | 2017-11-28 | 2018-05-08 | 山东泰开变压器有限公司 | Single-phase autotransformer based on resistance to shorting |
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Application publication date: 20150902 |