CN110021472A - A kind of new dry-type transformer - Google Patents
A kind of new dry-type transformer Download PDFInfo
- Publication number
- CN110021472A CN110021472A CN201910217738.6A CN201910217738A CN110021472A CN 110021472 A CN110021472 A CN 110021472A CN 201910217738 A CN201910217738 A CN 201910217738A CN 110021472 A CN110021472 A CN 110021472A
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- CN
- China
- Prior art keywords
- bushing
- low
- voltage
- tension
- coil
- 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.)
- Pending
Links
- 239000003973 paint Substances 0.000 claims abstract description 17
- 239000004065 semiconductor Substances 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004020 conductor Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 description 12
- 238000005266 casting Methods 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- H01F27/006—Details of transformers or inductances, in general with special arrangement or spacing of turns of the winding(s), e.g. to produce desired self-resonance
-
- 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
- H01F27/24—Magnetic cores
-
- 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
- H01F27/2823—Wires
-
- 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
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- 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
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- 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
- H01F27/327—Encapsulating or impregnating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention discloses a kind of new dry-type transformers, high-tension coil turns to pagoda type structure using the winding mode of vertical direction by copper wire, high-tension coil, by pouring into an entirety between bushing and low-tension bushing, and form high-voltage line packet, semiconductor conductive paint is sprayed in the outer surface of high-voltage line packet, and high-voltage line packet outer surface is made to be formed as zero potential, two ends of the semiconductor conductive paint that high-voltage line is wrapped are corresponding and the distance between bushing root and low-tension bushing root are 5-20mm, center conductor in bushing is connected with the high-voltage connection of high-tension coil, bucking electrode in bushing is connected with the semiconductor conductive paint of high-voltage line packet outer surface, the low-voltage lead of high-tension coil is connected with the center conductor in low-tension bushing；Low-voltage coil is set on iron core.Volume of transformer of the present invention is small, light-weight, and no-load loss is small, and voltage class, capacity can do it is higher.
Description
Technical field:
The present invention relates to a kind of new dry-type transformers.
Background technique:
In transformer manufacturing field, it is generally divided into oil-immersed transformer and dry-type transformer, 40.5kV and following voltage class
Mostly use epoxy casting class dry-type transformer.Epoxy resin is compared with air and transformer oil dielectric strength with higher, in addition
Mechanical strength with higher and superior moisture-proof, anti-dust performance after moulding by casting, and there is section compared with oil-immersed transformer
Can, it is oil-free and easy to maintain the advantages that, so epoxy resin dry-type transformer is increasingly by the welcome of user.
It at present mainly include low-voltage line packet and high pressure in the line pack arrangement of epoxy resin dry-type transformer (as shown in Figure 1)
Line packet, high-voltage line packet mostly use transverse winding mode, and high-voltage connection is drawn by coil outer surface middle position, make high-voltage line in this way
Packet outer surface in high potential, the outer surface of high-voltage line packet and upper and lower end faces is easy to that flashover electric discharge phenomena occur, meanwhile, it is high
The ruler of iron core is increased so always there are certain insulation distance H1 and H2 between high-voltage line packet and iron core between crimping packet
Very little, volume of transformer becomes larger.Due to the limitation of use occasion and technical conditions, the epoxy cast dry transformation of current this structure
Device can only accomplish 40.5kV voltage class, and the transformer of higher voltage grade is still based on oil immersed type.Therefore, it is necessory to right
The prior art is improved to solve the deficiency of the prior art.
Summary of the invention:
The present invention is to provide a kind of new dry-type transformer to solve the above-mentioned problems of the prior art.
The technical solution adopted in the present invention has: a kind of new dry-type transformer, including iron core, bushing, low-voltage line
Circle, high-tension coil and low-tension bushing, high-tension coil turns to pagoda type structure using the winding mode of vertical direction by copper wire, high
By pouring into an entirety between crimping circle, bushing and low-tension bushing, and high-voltage line packet is formed, in high-voltage line packet
Outer surface sprays semiconductor conductive paint, and high-voltage line packet outer surface is made to be formed as zero potential, and the semiconductor that high-voltage line is wrapped is led
It is 5-20mm with the distance between bushing root and low-tension bushing root that two ends of electricity paint are corresponding, in bushing
Center conductor be connected with the high-voltage connection of high-tension coil, the half of the bucking electrode in bushing and high-voltage line packet outer surface
Conductor conductive paint is connected, and the low-voltage lead of high-tension coil is connected with the center conductor in low-tension bushing；Low-voltage coil is set in iron
On core.
Further, the high-tension coil is wound pagoda type structure using vertical winding mode, and in high-tension coil
Copper wire is wound from the bottom to top, and is initially formed the bottom of pagoda type structure high-tension coil, the rear top for forming high-tension coil.
High-voltage line packet outer surface of the present invention after casting solidifies sprays semiconductor conductive paint, keeps high-voltage line packet outer surface equal
High-voltage connection for zero potential, high-tension coil is drawn by upper surface integrated high pressure casing, the center of integrated high pressure casing
Conductor is connected with the high-voltage connection of high-tension coil, and bucking electrode is connected with the semiconductor conductive paint of high-voltage line packet outer surface, low pressure
Lead is drawn by the integral type low-tension bushing of lower end surface.Resulting beneficial effect is: high-voltage line packet outer surface is zero
Current potential, so do not have between high-voltage line packet and between high-voltage line packet and iron core there are insulation distance, between high-voltage line packet and
Together with high-voltage line packet can be closely adhered to iron core, and the low pressure of the low pressure lead-out wire of low-voltage line packet and high-voltage line packet is drawn
Line can be drawn upwardly along high-voltage line packet appearance, greatly reduced core dimensions in this way, reduced transformer overall dimensions, save
Manufacturing cost.High-low voltage leads are drawn by the integral type high-low pressure casing of upper and lower end face, high-tension coil uses vertical pagoda type
Structure coiling can rationally utilize the insulation thickness of mould material, insulate at high potential thick, insulation is thin at low potential, effectively mentions
High electrical insulation properties reduce partial discharge quantity.
Detailed description of the invention:
Fig. 1 is the structure chart of dry-type transformer in the prior art.
Fig. 2 is structure of the invention figure.
Fig. 3 is partial enlarged view of the invention.
Fig. 4 is the structure chart that mesohigh line of the present invention wraps spraying semiconductor conductive paint.
1, iron core；2, bushing；3, low-voltage line packet；4, high-voltage line packet；5, low-tension bushing.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
Such as Fig. 2 to Fig. 4, a kind of new dry-type transformer of the present invention, including iron core 1, bushing 2, low-voltage coil 3, height
Crimping circle 4, low-tension bushing 5 and external lead wire 7.
Copper wire is wound around in an insulation framework using vertical pagoda type structure, after coiling, after removing insulation framework
High-tension coil 4 is formed, the both ends of copper wire are correspondingly formed the high-voltage connection and low-voltage lead of high-tension coil 4, high-tension coil 4, high pressure
Casing 2 and low-tension bushing 5 are poured by insulating materials is solidified into an entirety, and forms high-voltage line packet.In high-voltage line packet
Outer surface sprays semiconductor conductive paint, and high-voltage line packet outer surface is made to be formed as zero potential, and the semiconductor that high-voltage line is wrapped is led
The distance between upper end and 2 root of bushing of electricity paint are 5-20mm, the lower end for the semiconductor conductive paint that high-voltage line is wrapped
The distance between end and 5 root of low-tension bushing are 5-20mm.
High-tension coil 4 in the present invention is wound pagoda type structure using vertical winding mode.Copper wire in high-tension coil 4
It winds from the bottom to top, i.e., and is initially formed the bottom of high-tension coil 4, then proceedes to the top for winding and being formed high-tension coil 4 upwards.
Center conductor in bushing 2 is connected with the high-voltage connection of high-tension coil 4, the shielding electricity in bushing 2
Pole is connected with the semiconductor conductive paint of high-voltage line packet outer surface, and low-voltage lead and the center in low-tension bushing 5 of high-tension coil 4 are led
Body is connected, and external lead wire 7 is connected with low-tension bushing 5.
Copper wire is wound around in insulation framework, is removed insulation framework after the completion of coiling and is formed low-voltage coil 3, low-voltage coil 3 pours
After note solidification, semiconductor conductive paint is sprayed in outer surface, and low-voltage line packet outer surface is made to form zero potential.It can not also remove
Insulation framework is not poured, and forms a low-voltage coil 3 with insulation framework.The low pressure lead-out wire 6 of low-voltage coil 3 and external draw
Line 7 is drawn upwardly along 4 appearance of high-voltage line packet.Low-voltage coil 3 is set on iron core 1, and high-voltage line packet 4 is sheathed on low-voltage line packet
On 3.
Dry-type transformer mesohigh line packet of the present invention outer surface is zero potential, (A phase and B in Fig. 2 between high-voltage line packet
Between phase and between B phase and C phase) and high-voltage line packet and iron core between do not have to there are insulation distance, between high-voltage line packet with
And together with high-voltage line packet can be closely adhered to iron core, core dimensions is greatly reduced in this way, reduces transformer entirety ruler
It is very little, save manufacturing cost.High-low voltage leads are drawn by the integral type casting sleeve of upper and lower end face, high-tension coil is using vertical precious
Tower structure coiling keeps insulation pouring material and space utilization rate higher, and voltage's distribiuting is more uniform, can effectively improve electrical
Insulation performance reduces partial discharge quantity.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (2)
1. a kind of new dry-type transformer, it is characterised in that: including iron core (1), bushing (2), low-voltage coil (3), high pressure
Coil (4) and low-tension bushing (5), the high-tension coil (4) turn to pagoda type using the winding mode of vertical direction by copper wire
Structure by pouring into an entirety between high-tension coil (4), bushing (2) and low-tension bushing (5), and forms high pressure
Line packet sprays semiconductor conductive paint in the outer surface of high-voltage line packet, and high-voltage line packet outer surface is made to be formed as zero potential, high pressure
Two ends of the semiconductor conductive paint that line is wrapped are corresponding between bushing (2) root and low-tension bushing (5) root
Distance is 5-20mm, and the center conductor in bushing (2) is connected with the high-voltage connection of high-tension coil (4), bushing (2)
In bucking electrode be connected with the semiconductor conductive paint of high-voltage line packet outer surface, the low-voltage lead of high-tension coil (4) and low pressure set
The center conductor managed in (5) is connected；Low-voltage coil (3) is set on iron core (1).
2. new dry-type transformer as described in claim 1, it is characterised in that: the high-tension coil (4) uses vertical coiling
Mode is wound pagoda type structure, and copper wire is wound from the bottom to top in high-tension coil (4), and is initially formed pagoda type structure high pressure
The top of high-tension coil (4) is formed afterwards on the bottom of coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910217738.6A CN110021472A (en) | 2019-03-21 | 2019-03-21 | A kind of new dry-type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910217738.6A CN110021472A (en) | 2019-03-21 | 2019-03-21 | A kind of new dry-type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110021472A true CN110021472A (en) | 2019-07-16 |
Family
ID=67189788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910217738.6A Pending CN110021472A (en) | 2019-03-21 | 2019-03-21 | A kind of new dry-type transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110021472A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9725331D0 (en) * | 1997-11-28 | 1998-01-28 | Asea Brown Boveri | Transformer |
| CN1272216A (en) * | 1997-09-30 | 2000-11-01 | Abb股份公司 | Method and arrangement for regulating transformer/reactor, and transformer/reactor |
| CN1757082A (en) * | 2002-01-23 | 2006-04-05 | Abb股份有限公司 | Electrical machine |
| CN201204118Y (en) * | 2008-06-18 | 2009-03-04 | 广东中电华强变压器有限公司 | Resin insulated dry power transformer |
| CN201584271U (en) * | 2009-10-15 | 2010-09-15 | 厦门市天源兴环保科技有限公司 | Transformer |
| CN209912697U (en) * | 2019-03-21 | 2020-01-07 | 南京智达电气设备有限公司 | Novel dry-type transformer |
-
2019
- 2019-03-21 CN CN201910217738.6A patent/CN110021472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272216A (en) * | 1997-09-30 | 2000-11-01 | Abb股份公司 | Method and arrangement for regulating transformer/reactor, and transformer/reactor |
| GB9725331D0 (en) * | 1997-11-28 | 1998-01-28 | Asea Brown Boveri | Transformer |
| CN1757082A (en) * | 2002-01-23 | 2006-04-05 | Abb股份有限公司 | Electrical machine |
| CN201204118Y (en) * | 2008-06-18 | 2009-03-04 | 广东中电华强变压器有限公司 | Resin insulated dry power transformer |
| CN201584271U (en) * | 2009-10-15 | 2010-09-15 | 厦门市天源兴环保科技有限公司 | Transformer |
| CN209912697U (en) * | 2019-03-21 | 2020-01-07 | 南京智达电气设备有限公司 | Novel dry-type transformer |
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