CN202258734U - Coil insulation structure of amorphous alloy transformer - Google Patents

Coil insulation structure of amorphous alloy transformer Download PDF

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Publication number
CN202258734U
CN202258734U CN2011203824518U CN201120382451U CN202258734U CN 202258734 U CN202258734 U CN 202258734U CN 2011203824518 U CN2011203824518 U CN 2011203824518U CN 201120382451 U CN201120382451 U CN 201120382451U CN 202258734 U CN202258734 U CN 202258734U
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CN
China
Prior art keywords
insulation
coil
transformer
amorphous alloy
size
Prior art date
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 - Fee Related
Application number
CN2011203824518U
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Chinese (zh)
Inventor
王登洪
魏波
葛旭
李珍兵
范建红
甯志云
罗华
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DEYANG XINYUAN ELECTRIC APPLIANCE Co Ltd
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DEYANG XINYUAN ELECTRIC APPLIANCE Co Ltd
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Priority to CN2011203824518U priority Critical patent/CN202258734U/en
Application granted granted Critical
Publication of CN202258734U publication Critical patent/CN202258734U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to the technical field of an amorphous alloy transformer, in particular to a coil insulation structure of the amorphous alloy transformer. The coil insulation structure comprises a major insulation part and a minor insulation part, wherein a supporting strip oil channel structure which is formed by adhering a thin paperboard to a paperboard supporting strip is arranged between high-voltage and low-voltage coils of the major insulation part; the minor insulation part adopts electrical insulating mesh point adhesive paper; and the size of each mesh hole of the electrical insulating mesh point adhesive paper is 0.08 mm. The coil insulation structure of the amorphous alloy transformer has the advantages that: the supporting strip oil channel structure which is formed by adhering the thin paperboard to the paperboard supporting strip is used for insulating the high-voltage and low-voltage coils of the major insulation part, so that the gap size of a main hollow channel is structurally guaranteed, and a new insulation structure is formed on the theoretical basis of a new transformer insulation theory, namely a low oil gap strength and small oil gap volume theory; the insulation strength of the main hollow channel of the transformer is effectively improved; and the size of an oil channel cannot be too small due to winding, the radiation and material loss of coils of the transformer cannot be influenced, and the size of main technical parameters such as an impedance voltage value cannot be influenced.

Description

The amorphous alloy transformer coil insulation system
Technical field
The utility model belongs to amorphous alloy transformer technical field field, and is a kind of specifically in the amorphous alloy transformer coil insulation system.
Background technology
The transformer coil insulation comprises main insulation and longitudinal insulation two parts.Main insulation is meant that each coil reaches the insulation to other coils to grounded part.Comprise between low-voltage coil to iron core and insulating that the high and low pressure intercoil insulation insulate lead wire insulation and phase insulation etc. between end winding to iron yoke.Longitudinal insulation is meant between wire turn, the insulation between interlayer and line segment.Master, longitudinal insulation dielectric material are selected to have usually: electric insulation cardboard, cable paper, telephone paper, crimped paper, varnished cloth, strap etc.
The insulating paper cylinder that insulation is made shaping with 1.5 ㎜ insulating boards between low-voltage coil to iron core insulate as it; Insulation between the high and low pressure coil is to adopt 1.5 ㎜ insulating boards to make the corrugated board that is shaped through pressurization to insulate as it; Insulation between end winding to iron yoke is as its insulation with wooden cushion block and the bonding shaping of cardboard; Turn-to-turn insulation thickness is 0.45 ㎜, and it mainly is to choose according to the interlayer maximum working voltage that layer insulation is chosen, and voltage is high more, and used electric insulation cable paper number is many more.The not enough aspect of existing transformer coil insulated part mainly is: the insulation system that adopts corrugated board between the high and low pressure coil; Behind the fluting because its insufficient strength; Easy deformation in the coil winding process; Oil duct is diminished, influence coil heat radiation and insulation distance, bigger to the influence of important technological parameters impedance voltage value.The used material of coil interlayer insulation is the electric insulation cable paper, and thickness is 0.08 ㎜, and the insulation electrical intensity of the relative electric insulation point gummed paper of its material is low by 14% ~ 27%, and insulation property are relatively poor relatively.The insulation system of the coil of existing transformer adopts cable paper to insulate more, and first end layer is strengthened the layer insulation classification.The layer reinforcement of first end is meant adds 2 insulating papers between ground floor, the second layer, in the end add 1 insulating paper between one deck, the layer second from the bottom.The interlayer graded insulation generally is used on the bigger transformer of Capacity Ratio, and main purpose is the radial size that under the prerequisite that does not reduce insulation level, reduces coil.Graded insulation has increased coiling workman's workload, has reduced operating efficiency.
Like application number is 200710017004.0; The applying date is 2007-08-17; Name is called the patent of invention of shielding and the insulating treatment method of place " a kind of transformer coil lift one's head ", and its technological orientation is: transformer coil is lifted one's head the shielding and the insulating treatment method at place, and its special character is may further comprise the steps: A. fills foil shielding layer; B. wrap up metallization crimped paper, C. wraps up insulating paper.The invention has the beneficial effects as follows, improved electric-field intensity distribution, form screen, shielding and insulation effect are good, improve the insulation safety reliability, are mainly used in voltage 110~220KV oil-filled transformer, also are applicable to other transformer.Above-mentioned patent remains cable papers such as adopting wrapping crimped paper and insulate.
Summary of the invention
Because existing transformer coil insulation system exists high and low pressure intercoil insulation structural strength not enough; Easy deformation in the coil winding process; Oil duct is diminished, influence coil heat radiation and insulation distance, to the bigger problem of important technological parameters impedance voltage value influence; Special a kind of mechanical strength height, not classification of layer insulation, the on-deformable amorphous alloy transformer coil insulation system under high pressure of proposing, its technical scheme is following:
A kind of amorphous alloy transformer coil insulation system comprises main insulation and longitudinal insulation two parts, it is characterized in that: be the stay oil channel structure of presspaper and the bonding formation of cardboard stay between said main insulation high-tension coil and the low-voltage coil.
Said longitudinal insulation adopts electric insulation mesh point gummed paper.
Said electric insulation mesh point gummed paper mesh size is 0.08mm.
The utility model advantage is:
1, the insulation between the amorphous alloy transformer coil main insulation high and low pressure is by adopting corrugated board to change into presspaper and the bonding stay oil channel structure that forms of cardboard stay; Guaranteed the gap size of main empty path from structure, form with new transformer insulated theory: oil clearance intensity small oil gap volume theory is the new insulation system of theoretical foundation.Effectively improve the dielectric strength of transformer main empty path, guarantee that the oil duct size can be not too small because of the coiling reason, thereby influence transformer coil heat radiation and material unaccounted-for (MUF), influence the size of important technological parameters impedance voltage value.
2, amorphous alloy transformer coil longitudinal insulation layer insulation has effectively improved the electrical strength of coil interlayer insulation by adopting the electric insulation cable paper to change into 0.08 ㎜ electric insulation mesh point gummed paper, and the raising ratio can reach 14%-27%, makes layer insulation more reliable.
3, the insulation property of electric insulation mesh point gummed paper are fine, if use the insulating paper of other materials can not reach same effect.Replace cable paper as layer insulation with the some gummed paper, can reduce the number of layer insulation, thereby reduce the radial size of coil, so need not make graded insulation.The improvement that mainly is the insulating paper material makes layer insulation not need classification.Improvement on structure and the material makes the insulation property of transformer coil better, and the width of cloth is littler to size.Reduce the use amount of copper cash, reduced production cost.
Description of drawings
Fig. 1 is the utility model main insulation part oil channel structure vertical view.
Fig. 2 is the utility model main insulation part oil channel structure front view.
Fig. 3 is a longitudinal insulation part electric insulation mesh point gummed paper structural representation.
In the accompanying drawing 1, stay 2, cardboard 3, electric insulation mesh point gummed paper.
Embodiment
A kind of amorphous alloy transformer coil insulation system comprises main insulation and longitudinal insulation two parts, is the stay oil channel structure of presspaper and the bonding formation of cardboard stay between said main insulation high-tension coil and the low-voltage coil.Said longitudinal insulation adopts electric insulation mesh point gummed paper.Said electric insulation mesh point gummed paper mesh size is 0.08mm.
Insulation between the amorphous alloy transformer coil main insulation high and low pressure is by adopting corrugated board to change into presspaper and the bonding stay oil channel structure that forms of cardboard stay; Guaranteed the gap size of main empty path from structure, form with new transformer insulated theory: oil clearance intensity small oil gap volume theory is the new insulation system of theoretical foundation.Effectively improve the dielectric strength of transformer main empty path, guarantee that the oil duct size can be not too small because of the coiling reason, thereby influence transformer coil heat radiation and material unaccounted-for (MUF), influence the size of important technological parameters impedance voltage value.
Amorphous alloy transformer coil longitudinal insulation layer insulation has effectively improved the electrical strength of coil interlayer insulation by adopting the electric insulation cable paper to change into 0.08 ㎜ electric insulation mesh point gummed paper, and the raising ratio can reach 14%`27%, makes layer insulation more reliable.The insulation property of electric insulation mesh point gummed paper are fine, if use the insulating paper of other materials can not reach same effect.Replace cable paper as layer insulation with the some gummed paper, can reduce the number of layer insulation, thereby reduce the radial size of coil, so need not make graded insulation.The improvement that mainly is the insulating paper material makes layer insulation not need classification.

Claims (3)

1. an amorphous alloy transformer coil insulation system comprises main insulation and longitudinal insulation two parts, it is characterized in that: be the stay oil channel structure of presspaper (2) with the bonding formation of cardboard stay (1) between said main insulation high-tension coil and the low-voltage coil.
2. amorphous alloy transformer coil insulation system according to claim 1 is characterized in that: said longitudinal insulation adopts electric insulation mesh point gummed paper (3).
3. amorphous alloy transformer coil insulation system according to claim 2 is characterized in that: said electric insulation mesh point gummed paper (3) mesh size is 0.08mm.
CN2011203824518U 2011-10-10 2011-10-10 Coil insulation structure of amorphous alloy transformer Expired - Fee Related CN202258734U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203824518U CN202258734U (en) 2011-10-10 2011-10-10 Coil insulation structure of amorphous alloy transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203824518U CN202258734U (en) 2011-10-10 2011-10-10 Coil insulation structure of amorphous alloy transformer

Publications (1)

Publication Number Publication Date
CN202258734U true CN202258734U (en) 2012-05-30

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CN2011203824518U Expired - Fee Related CN202258734U (en) 2011-10-10 2011-10-10 Coil insulation structure of amorphous alloy transformer

Country Status (1)

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CN (1) CN202258734U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664093A (en) * 2012-05-31 2012-09-12 上海置信电气非晶有限公司 Coil structure of amorphous alloy transformer
CN103268806A (en) * 2013-06-06 2013-08-28 国家电网公司 10kV oil-immersed transformer
CN103545088A (en) * 2013-11-12 2014-01-29 国家电网公司 Supporting bar favorable for dissipating heat of oil-immersing amorphous alloy transformer
CN106981349A (en) * 2017-03-22 2017-07-25 宁波奥克斯高科技有限公司 A kind of resistance to shorting structure of amorphous alloy transformer
CN109830364A (en) * 2016-03-18 2019-05-31 福建新大陆环保科技有限公司 Dry type high-frequency high-voltage transformer structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664093A (en) * 2012-05-31 2012-09-12 上海置信电气非晶有限公司 Coil structure of amorphous alloy transformer
CN103268806A (en) * 2013-06-06 2013-08-28 国家电网公司 10kV oil-immersed transformer
CN103545088A (en) * 2013-11-12 2014-01-29 国家电网公司 Supporting bar favorable for dissipating heat of oil-immersing amorphous alloy transformer
CN109830364A (en) * 2016-03-18 2019-05-31 福建新大陆环保科技有限公司 Dry type high-frequency high-voltage transformer structure
CN106981349A (en) * 2017-03-22 2017-07-25 宁波奥克斯高科技有限公司 A kind of resistance to shorting structure of amorphous alloy transformer

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EXPY Termination of patent right or utility model
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Granted publication date: 20120530

Termination date: 20151010