CN107749339A - A kind of oil-immersed type non-crystal alloy transformer coil - Google Patents
A kind of oil-immersed type non-crystal alloy transformer coil Download PDFInfo
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- CN107749339A CN107749339A CN201711143245.XA CN201711143245A CN107749339A CN 107749339 A CN107749339 A CN 107749339A CN 201711143245 A CN201711143245 A CN 201711143245A CN 107749339 A CN107749339 A CN 107749339A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2847—Sheets; Strips
- H01F2027/2857—Coil formed from wound foil conductor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention discloses a kind of oil-immersed type non-crystal alloy transformer coil, belong to transformer technology field.It is not high for the mechanical strength of conventional coil, insulating properties deficiency, the problem of radiating effect is bad, the present invention provides a kind of oil-immersed type non-crystal alloy transformer coil, it is outside insulation ebonite cylinder, the glass fiber bundle of pre- epoxy resin dipping is equipped with outside end turn and coil, by being heating and curing as an entirety after coil winding, the layer insulation of other coil is arranged at intervals successively for insulating paper and insulating barrier, insulating paper is water chestnut lattice point gummed paper, insulating barrier is made up of polyester fiber, both play a part of being dielectrically separated from, enhance the mechanical strength of coil, and reduce the diameter of coil, so that device structure is compacter, the present invention improves the integral insulation intensity of transformer coil, it ensure that the safety of coil insulation structure, reliably, extend the service life of transformer.
Description
Technical field
The invention belongs to transformer technology field, more specifically to a kind of oil-immersed type non-crystal alloy transformer coil.
Background technology
Oil-filled transformer is iron core and winding is immersed in transformer in iknsulating liquid, and it is industrial and mining enterprises and civil buildings
One of visual plant in power supply-distribution system, it is that the network voltage of high pressure is down into what user used using electromagnetic induction principle
Busbar voltage.The circuit part of the coil constitution equipment of transformer in itself, it and outside power network are directly connected to, and are in transformer
Most important part, it is referred to as " heart " of transformer.
At this stage, Transformer catastrophic failure is frequent, causes high-voltage line loop pillar to be increased to stress and radial load, causes
Inside transformer is by huge stress deformation damage until transformer is damaged.Transformer uses traditional handicraft coiling,
Through that can not meet at this stage to the fortune of grid stability, power supply quality, user power utilization quality and Transformer catastrophic failure
The requirement of row stable performance is, it is necessary to which the structure of transformer high-voltage coil is further improved.
Publication date discloses a kind of cored screw type transformation for the Chinese patent 200810032883.9 on July 29th, 2009
Device loop construction, it includes coil rack, transformer coil and magnetic core, and its coil rack is turned to hollow for one by insulation tube
Helical form skeleton, the thickness of a width of transformer coil wire of tooth of cored screw shape skeleton, the tooth of cored screw shape skeleton away from for
The gap of the thickness ledger line circle turn-to-turn insulation of transformer coil wire；Transformer coil winding is into identical with cored screw shape skeleton
Tooth away from spring-like, transformer coil is screwed on cored screw shape skeleton, and magnetic core is inserted into described cored screw shape skeleton
In transformer coil.During installation, transformer coil is screwed in along cored screw shape skeleton rotation opening direction, whole transformation
The tooth that device coil is screwed between the cored screw shape skeleton being made up of insulation tube is wide interior, and magnetic core is placed in cored screw shape bone
In frame and transformer coil or among the cavity of pipe, the coil skeleton structure of transformer is integrally constituted.Above-mentioned patent is to line
Coil structures are improved, and are improved to cored screw type, but still have but the end of circular laminar winding construction support
Less stable, it is not appropriate for used on the transformer of Large Copacity the problem of.
Publication date is that the Chinese patent 201520742209.5 of on 2 3rd, 2016 discloses a kind of anti-breakdown transformer wire
Circle, the coil is multi-layer cylindrical coil, including high pressure loop and low pressure circle, and the low pressure circle is arranged inside high pressure loop, described
Insulating barrier is provided between high pressure loop and low pressure circle, supporting mechanism is provided with the insulating barrier, the supporting mechanism includes some arranged side by side
Axially arranged stay, and stay is equal with coil height, the stay is provided with multigroup in height by the reinforcement of its decile
Bar, multigroup stiffener are parallel circumferentially disposed, are also enclosed with insulating board on the outside of the stay, and insulating board and stay are mutual
Mutually it is bonded, the high pressure loop appearance is enclosed with one layer of deflation mechanism.Deficiency existing for the patent is to ensure inside and outside two layer lines
Steadiness between circle, it is necessary to strengthen the contact surface between stay and coil, then the width of stay must be just increased, this
Also the size in air channel is just reduced indirectly, reduces radiating effect, while can not be connected between the air channel of stay both sides, this
Also the heat flow being unfavorable in coil and radiating.
The content of the invention
For conventional coil mechanical strength it is inadequate, insulating properties are insufficient, radiating effect is bad the problem of, the present invention provide
A kind of oil-immersed type non-crystal alloy transformer coil, the integral insulation intensity and mechanical strength of transformer coil are improved, ensure that
Coil insulation structure it is safe and reliable, extend the service life of transformer.
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of oil-immersed type non-crystal alloy transformer coil, including high-tension coil, low-voltage coil and iron core, the low-voltage coil
Inside, it is enclosed on iron core, the high-tension coil is enclosed on outside low-voltage coil, and the high-tension coil and low-voltage coil are using paper tinsel around side
Formula and the rectangle to be engaged with iron core, the insulation ebonite cylinder of oil immersion, the height are provided between the low-voltage coil and iron core
Every interlayer of line ball circle and low-voltage coil is provided with oil duct, and the oil duct is bonded in layer insulation for more stays and formed,
Layer insulation is equipped between every layer line circle of the high-tension coil and low-voltage coil, the layer insulation is insulating paper
It is arranged at intervals successively with insulating barrier；
The stay of the different interlayers is just corresponding.
Further, the insulating paper is water chestnut lattice point gummed paper, and the insulating barrier is made up of polyester fiber.
Further, gap is left in the end of the low-voltage coil and high-tension coil, and filled with pre- in gap
The glass fiber bundle of epoxy resin dipping, the insulation ebonite cylinder outside is wound with the glass fiber bundle of pre- epoxy resin dipping, described
The glass fiber bundle of pre- epoxy resin dipping is wound with outside high-tension coil.
Further, the both ends of the insulating paper and insulating barrier through glass fiber bundle and it is exposed in high-tension coil and
The two sides of low-voltage coil.
Further, the class of insulation of the water chestnut lattice point gummed paper is B levels.
Further, the stiffener of its decile, the stiffener are in height by the stay provided with multigroup
It is parallel circumferentially disposed.
Further, the stay and the paper slip that stiffener is cut into by insulating board it is overlapping it is Nian Jie form, it is described
Stay is provided with multigroup through hole laterally set in height, and through-hole aperture is adapted with stiffener size, and the stiffener is circumferential
Set and run through through hole.
Further, the paper slip number of plies of the stay is six layers, and the paper slip number of plies of the stiffener is two layers, multi-ply paper
Bar mutually aligns bonding.
Compared to prior art, beneficial effects of the present invention are：
(1) the pre- epoxy resin dipping of coiling first outside the insulation ebonite cylinder of oil-immersed type non-crystal alloy transformer coil of the invention
Glass fiber bundle, end turn also filled with the glass fiber bundle of pre- epoxy resin dipping, coil outermost layer preimpregnation asphalt mixtures modified by epoxy resin
The glass fiber bundle coiling of fat, by being heating and curing as an entirety after coil winding, there is the machinery of similar fiberglass
Intensity；
(2) polyester film can reduce coil diameter as insulating barrier so that the structure of equipment is compacter, and performance is more
Reliably；Water chestnut lattice point gummed paper can play the effect of being dielectrically separated from, and can organically combines coil together, coil as insulating barrier
Overall mechanical strength is big, disclosure satisfy that the strength demand of anti-sudden short circuit, the layer insulation of coil of the invention is water chestnut lattice glue
Paper and polyester fiber insulating barrier are arranged at intervals successively, both ensure that insulation effect, are enhanced the mechanical strength of coil, are reduced again
The diameter of coil so that device structure is compacter；
(3) fagging between oil duct of the invention is to be used for stretching cardboard oil duct and coil, and this structure can improve coil and exist
Bear dynamic stability during short-circuit electromotive force effect so that transformer oil can circulate mutually, help to radiate；Different interlayers
Stay it is just corresponding, coil caused by preventing the stay of interlaced arrangement blocks oil duct, makes transformer oil circulation not smooth, influences coil
Radiating effect；
(4) stay of the invention is cut into strips by insulating board, and several paper slips are sticked together, and is then bonded at layer
Between in insulation, so add the toughness of coil, be allowed to be not easy breakdown；In order to increase the fastness of stay, and on stay
Opened hole, and the circumferentially disposed stiffener through through hole, further strengthen the steadiness of stay, but also do not influence dissipating for coil
Heat；
(5) insulation system of oil-immersed type non-crystal alloy transformer coil of the invention carries compared with traditional insulation system
The high integral insulation intensity of transformer coil, ensure that the safe and reliable of coil insulation structure, extends the use of transformer
Life-span, when meeting at this stage to grid stability, power supply quality, user power utilization quality and Transformer circuit catastrophic failure
Runnability stability requirement, be particularly suitable for use in high overload transformer.
Brief description of the drawings
Fig. 1 is the structural representation of the oil-immersed type non-crystal alloy transformer coil of the present invention；
Fig. 2 is the stay schematic diagram of the oil-immersed type non-crystal alloy transformer coil of the present invention；
Fig. 3 is the supporting construction schematic diagram of the oil-immersed type non-crystal alloy transformer coil of the present invention；
In figure：1- iron cores；2- insulation ebonite cylinders；3- low-voltage coils；4- high-tension coils；5- stays；6- layer insulations；7- glass
Glass fibre bundle；8- stiffeners；9- through holes.
Embodiment
The present invention is further described below with reference to specific embodiment.
Embodiment 1
A kind of oil-immersed type non-crystal alloy transformer coil of the present embodiment as shown in Figure 1, 2, 3, including high-tension coil 4,
Low-voltage coil 3 and iron core 1, as shown in figure 1, including low-voltage coil 3, being enclosed on iron core 1, high-tension coil 4 is enclosed on low-voltage coil 3
Outside, high-tension coil 4 and low-voltage coil 3 use paper tinsel around mode and the rectangle to be engaged with iron core 1, low-voltage coil 3 and iron core 1
Between be provided with oil immersion insulation ebonite cylinder 2.
Gap is left in the end of low-voltage coil 3 and high-tension coil 4, and the glass of pre- epoxy resin dipping is filled with gap
The both ends of glass fibre bundle 7, insulating paper and insulating barrier are through glass fiber bundle 7 and exposed in high-tension coil 4 and low-voltage coil 3
Two sides, the outside of insulation ebonite cylinder 2 are wound with the glass fiber bundle 7 of pre- epoxy resin dipping, preimpregnation ring are wound with outside high-tension coil 4
The glass fiber bundle 7 of oxygen tree fat；By being heating and curing as an entirety after coil winding, the machinery with similar fiberglass
Intensity, the bonding strength of epoxy resin are enough to prevent the displacement of each layer of winding during short circuit, so as to ensure that winding insulation structure is grown
The mechanically and electrically performance of phase.
Water chestnut lattice point gummed paper be electric insulation paper two sided coatings be in form diamond checks modification specific epoxy class insulating resin
Insulating materials, the epoxy resin of the material contain latent shape curing agent, under normal temperature (less than 35 DEG C) be adhesion dry and comfortable material,
The material has superior mechanical performance and a good dielectric properties after heat cure, and coat is in coil drying process during use
In start to melt in certain temperature, produce adhesive attraction.As the rise of temperature starts to solidify again, make the neighboring layers of winding
Reliably it is bonded into a fixed cell, the bonding strength of epoxy resin is enough to prevent the displacement of each layer of winding during short circuit, so as to
It ensure that the long-term mechanical electric performance of insulation system.Because the resinous coat of diamond dotted insulating paper is in point-like, oil ensure that
Immersion and insulating materials in gas discharge, corona and partial discharge are effectively prevented from, so as to ensure that the safety of insulation system, can
Lean on.
Layer insulation 6 is equipped between every layer line circle of high-tension coil 4 and low-voltage coil 3, layer insulation 6 is for insulating paper and absolutely
Edge layer is arranged at intervals successively, and insulating paper is water chestnut lattice point gummed paper (class of insulation is B levels), and insulating barrier is made up of polyester fiber, polyester
Film can reduce coil diameter as insulating barrier so that the structure of equipment is compacter, more reliable performance；Water chestnut lattice point gummed paper
As insulating barrier, the effect of being dielectrically separated from can be played, and can organically combines coil together, and coil overall mechanical strength is big,
The strength demand of anti-sudden short circuit is disclosure satisfy that, water chestnut lattice point gummed paper and polyester fiber insulating barrier are spaced set successively by the present embodiment
Put, both ensure that insulation effect, enhance the mechanical strength of coil, reduce the diameter of coil again so that device structure is more
It is compact.
As shown in Fig. 2 every interlayer of high-tension coil 4 and low-voltage coil 3 is provided with oil duct, oil duct is that more stays 5 are viscous
Formed in layer insulation 6, the stays 5 of different interlayers is just corresponding, i.e. every layer of stay be pressed in just its next layer stay it
On, the purpose so set is that coil caused by preventing the stay of interlaced arrangement blocks oil duct, or due to coil winding tension
Cause coil to be deformed, plug the oil duct between stay, make transformer oil circulation not smooth, influence the radiating effect of coil
Fruit.As shown in figure 3, stay 5 be provided with it is multigroup in height by the stiffener 8 of its decile, stiffener 8 is that parallel circumference is set
Put.The paper slip number of plies of stay 5 is six layers in the present embodiment, and the paper slip number of plies of stiffener 8 is two layers, and stay 5 is with stiffener 8 by insulation
Several paper slips that cardboard is cut into and overlapping bonding forms, multilayer paper slip mutually align bonding, and stay 5 is in height provided with more
The through hole 9 that group is laterally set, the aperture of through hole 9 are adapted with the size of stiffener 8, and stiffener 8 is circumferentially disposed and runs through through hole 9；If
The purpose for putting stay contributes to coil radiating, and adds the toughness of coil, and the steadiness of stay is strengthened using stiffener.
Claims (8)
1. a kind of oil-immersed type non-crystal alloy transformer coil, including high-tension coil (4), low-voltage coil (3) and iron core (1), described
Including low-voltage coil (3), it is enclosed on iron core (1), the high-tension coil (4) is enclosed on low-voltage coil (3) outside, it is characterised in that institute
State high-tension coil (4) and low-voltage coil (3) uses paper tinsel around mode and the rectangle to be engaged with iron core (1), the low-voltage line
Enclose the insulation ebonite cylinder (2) provided with oil immersion between (3) and iron core (1), the high-tension coil (4) and low-voltage coil (3) it is every
Interlayer is provided with oil duct, and the oil duct is bonded in layer insulation (6) for more stays (5) and formed,
Layer insulation (6), the layer insulation (6) are equipped between every layer line circle of the high-tension coil (4) and low-voltage coil (3)
It is arranged at intervals successively for insulating paper and insulating barrier；
The stay (5) of the different interlayers is just corresponding.
2. oil-immersed type non-crystal alloy transformer coil according to claim 1, it is characterised in that the insulating paper is water chestnut lattice
Point gummed paper, the insulating barrier are made up of polyester fiber.
3. oil-immersed type non-crystal alloy transformer coil according to claim 1 or 2, it is characterised in that the low-voltage coil
(3) and gap is left in the end of high-tension coil (4), and the glass fiber bundle (7) of pre- epoxy resin dipping is filled with gap,
The glass fiber bundle (7) of pre- epoxy resin dipping, the outer coiling of the high-tension coil (4) are wound with the outside of the insulation ebonite cylinder (2)
There is the glass fiber bundle (7) of pre- epoxy resin dipping.
4. oil-immersed type non-crystal alloy transformer coil according to claim 3, it is characterised in that the insulating paper and insulation
The both ends of layer are through glass fiber bundle (7) and exposed in the two sides of high-tension coil (4) and low-voltage coil (3).
5. oil-immersed type non-crystal alloy transformer coil according to claim 4, it is characterised in that the water chestnut lattice point gummed paper
The class of insulation is B levels.
6. the oil-immersed type non-crystal alloy transformer coil according to claim 2 or 5, it is characterised in that on the stay (5)
Provided with multigroup in height by the stiffener (8) of its decile, the stiffener (8) is parallel circumferentially disposed.
7. oil-immersed type non-crystal alloy transformer coil according to claim 6, it is characterised in that the stay (5) is with adding
The overlapping bonding of paper slip that strong bar (8) is cut into by insulating board forms, and the stay (5) sets provided with multigroup transverse direction in height
The through hole (9) put, through hole (9) aperture are adapted with stiffener (8) size, and the stiffener (8) is circumferentially disposed and runs through through hole
(9)。
8. oil-immersed type non-crystal alloy transformer coil according to claim 7, it is characterised in that the paper of the stay (5)
The bar number of plies is six layers, and the paper slip number of plies of the stiffener (8) is two layers, and multilayer paper slip mutually aligns bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143245.XA CN107749339A (en) | 2017-11-17 | 2017-11-17 | A kind of oil-immersed type non-crystal alloy transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711143245.XA CN107749339A (en) | 2017-11-17 | 2017-11-17 | A kind of oil-immersed type non-crystal alloy transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107749339A true CN107749339A (en) | 2018-03-02 |
Family
ID=61252166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711143245.XA Withdrawn CN107749339A (en) | 2017-11-17 | 2017-11-17 | A kind of oil-immersed type non-crystal alloy transformer coil |
Country Status (1)
| Country | Link |
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| CN (1) | CN107749339A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597778A (en) * | 2018-05-30 | 2018-09-28 | 上海置信电气非晶有限公司 | Transformer oil passage and transformer |
| CN109801775A (en) * | 2019-04-04 | 2019-05-24 | 青岛云路先进材料技术股份有限公司 | Stereo amorphous alloy wound iron core and its single frame |
| CN113451020A (en) * | 2021-05-31 | 2021-09-28 | 广州市一变电气设备有限公司 | High-voltage coil of dry-type transformer and preparation method thereof |
| CN118098784A (en) * | 2024-03-06 | 2024-05-28 | 深圳市深特变电气设备有限公司 | Double-spiral low-voltage coil of oil-immersed distribution transformer and winding process thereof |
-
2017
- 2017-11-17 CN CN201711143245.XA patent/CN107749339A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597778A (en) * | 2018-05-30 | 2018-09-28 | 上海置信电气非晶有限公司 | Transformer oil passage and transformer |
| WO2019227812A1 (en) * | 2018-05-30 | 2019-12-05 | 上海置信电气非晶有限公司 | Transformer oil channel and transformer |
| CN109801775A (en) * | 2019-04-04 | 2019-05-24 | 青岛云路先进材料技术股份有限公司 | Stereo amorphous alloy wound iron core and its single frame |
| CN113451020A (en) * | 2021-05-31 | 2021-09-28 | 广州市一变电气设备有限公司 | High-voltage coil of dry-type transformer and preparation method thereof |
| CN118098784A (en) * | 2024-03-06 | 2024-05-28 | 深圳市深特变电气设备有限公司 | Double-spiral low-voltage coil of oil-immersed distribution transformer and winding process thereof |
| CN118098784B (en) * | 2024-03-06 | 2024-09-06 | 深圳市深特变电气设备有限公司 | Double-spiral low-voltage coil of oil-immersed distribution transformer and winding process thereof |
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Application publication date: 20180302 |
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