CN106710839B - A kind of dry-type transformer and its special high-pressure coil - Google Patents
A kind of dry-type transformer and its special high-pressure coil Download PDFInfo
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- CN106710839B CN106710839B CN201710008009.0A CN201710008009A CN106710839B CN 106710839 B CN106710839 B CN 106710839B CN 201710008009 A CN201710008009 A CN 201710008009A CN 106710839 B CN106710839 B CN 106710839B
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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
- H01F27/28—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
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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
- H01F27/085—Cooling by ambient air
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2876—Cooling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention provides a kind of dry-type transformer and its special high-pressure coils, wherein the high-tension coil includes flat bare copper wire and surrounds the two layers polyester film on flat bare copper wire, it is surrounded with polyester non-woven fabric on the outer layer polyester film, in addition upper surface layer is pressed with insulation rubber on the high-tension coil, the insulating cement skin includes the first insulation rubber and the second insulation rubber, the structure of the high-tension coil can make coiling uniform during coiling, and coil inside will not generate biggish bubble electric discharge, partial discharge quantity is low, dry-type transformer provided by the invention can effectively improve the long-term running reliability of dry-type transformer using the high-tension coil.In addition the dry-type transformer in the present invention also has additional cooling airway and heat dissipation groove, further improves the heat dissipation performance of dry-type transformer.
Description
Technical field
The present invention relates to transformer coil technical field more particularly to a kind of dry-type transformers and its special high-pressure coil.
Background technique
Dry-type transformer, which refers to, not to be immersed in insulating oil, by the cooling a kind of transformation of natural air or forced air
Device is widely used in the places such as local lighting, skyscraper and airport.The shelf depreciation of dry-type transformer is to cause insulation ag(e)ing simultaneously
The main reason for leading to insulation breakdown.The electric discharge of short time not only results in the medium electricity that is impaired, and discharging in entire channel
Solution acts on so that insulation accelerated oxidation, and etching insulative, to reduce the service life of transformer.
Such as application No. is：201310340729.9 Chinese patent disclose a kind of coiling side with filler high-tension coil
Method, this method is mainly by coiling process, by guaranteeing the uniformity of winding displacement spacing, and then to guarantee dielectric strength drawn game
Zoom level, such as carries out interior insulation processing to coil, and the interior insulation processing is specially：Winding layer specification is glass first on the inside of coil
Glass silk strap, so that adjacent glass silk strap turn-to-turn does not contact；Then one layer of grid cloth, grid cloth are placed on glass wool cloth band
Interval 5mm of the interface at outlet panel, between interface both ends of the surface；Finally fixed mesh cloth is used for around one layer on grid cloth
Glass wool cloth band.But it is filled with filler inside the high-tension coil in this method, the heat dissipation of transformer during the work time is increased
Certain burden is added.
For another example application No. is：201520654028.7 Chinese patent disclose a kind of heat dissipation type energy conservation dry-type transformer line
Circle, includes low-voltage coil, processing release paper, the first air flue, airway strip, epoxy resin, the second air flue and high-tension coil.In low-voltage line
It is provided with the first air flue in circle, is provided with processing release paper between first air flue and low-voltage coil, it is vertical in the first air flue
It is provided with airway strip, the second air flue is provided in high-tension coil, is provided between second air flue and high-tension coil de-
Mould paper is vertically arranged with airway strip, spacing distance and first between the airway strip in the second described air flue in the second air flue
Spacing distance is identical between airway strip in air flue, and the airway strip in the second air flue is set with the airway strip in the first air flue in interlocking
It sets, which is mainly radiated by airway strip, but the distribution comparatively dense of the airway strip will affect between coil
Sensitivity, in addition the size of airway strip is certain, will not be adjusted according to transformer operating temperature, will lead to the wave of the energy
Take, does not meet the objective of sustainable development.
Summary of the invention
To overcome high-voltage coil structure existing in the prior art complicated, non-uniform electric, partial discharge is big, be easy to cause
Coil inside breakdown burns and the problems such as transformer heat dissipation performance is bad, and the present invention provides a kind of dry-type transformers and its dedicated
High-tension coil.
Specific technical solution is as follows：A kind of dry-type transformer special high-pressure coil, including flat bare copper wire and surround it is flat naked
Two layers polyester film on copper wire is surrounded with polyester non-woven fabric, the polyester non-woven fabric upper surface on the outer layer polyester film
Be laminated with insulation rubber, the insulating cement skin includes the first insulation rubber and the second insulation rubber, the first insulation rubber and
Second insulation rubber is integrally formed, and the first insulation rubber and the second insulation rubber are in stepped setting.
On this basis, the width of the first insulation rubber is equal to the length of flat bare copper wire vertical cross-section.
On this basis, the width of the second insulation rubber is greater than the width of the first insulation rubber.
On this basis, the second insulating cement epidermis face is evenly arranged with multiple indents, between each indent
Distance is 1/5th of the second insulation rubber.
The present invention also provides a kind of dry-type transformer, including pedestal, iron core and the coaxial winding being coated on iron core,
The coaxial winding is hollow type insulation winding, and the winding includes low-voltage coil, cooling airway and high-tension coil, the low pressure
Coil setting in inner ring, the high-tension coil setting in outer ring, the cooling airway setting low-voltage coil and high-tension coil it
Between.
On this basis, two adjacent surfaces of the cooling airway and high-tension coil and low-voltage coil offer at least 4
The height of a heat dissipation groove, the heat dissipation groove is less than the height of cooling airway.
On this basis, the heat dissipation groove surfaces are provided with active open, and the active open includes sliding slot, glass plate
And height adjustment device, the sliding slot are fixed at cooling airway outer surface, the glass plate is flexibly connected with sliding slot, described
The lower end of glass plate is arranged in height adjustment device.
On this basis, the height adjustment device includes two casings and balancing device, and the balancing device setting exists
The top of two casings, described two casings are respectively first sleeve and the second casing, and the first sleeve and the second casing are flat
Row is arranged in the outer surface of cooling airway, and second casing is arranged in the lower end of glass plate, the first sleeve not with glass
Plate contact, the both ends of the balancing device are movably arranged on first sleeve and the second inside pipe casing respectively.
On this basis, the first sleeve is internally provided with mercury, and second sleeve bottom is provided with spring, described
Second internal surface of sleeve pipe two sides are evenly arranged with bayonet.
On this basis, the balancing device includes curved rod and card ball, and the card ball includes active card ball and fixing card
Ball, the active card ball and fixing card ball are separately positioned on the both ends of curved rod, and the fixing card ball is arranged in first sleeve
Portion, the active card ball setting are provided with support rod, the support rod and glass on the left of the second inside pipe casing, the curved rod
Glass plate lower end offsets, and the card ball is hemispherical, and the diameter of the card ball is greater than the width of bayonet, and the radius of the card ball is less than
The width of bayonet.
Compared with prior art, the beneficial effects of the invention are as follows：
1, a kind of dry-type transformer special high-pressure coil provided by the present invention, including flat bare copper wire and surround flat naked copper
Two layers polyester film on line is surrounded with polyester non-woven fabric, the polyester non-woven fabric upper surface layer on the outer layer polyester film
It is pressed with insulation rubber, coil inside will not generate biggish bubble electric discharge, therefore part to the structure of the high-tension coil at work
Discharge capacity is low, not will cause coil inside breakdown and burns, improves the reliability of transformer work.
2, a kind of dry-type transformer special high-pressure coil provided by the present invention further includes insulation rubber, the insulating cement suitcase
The first insulation rubber and the second insulation rubber are included, the first insulation rubber and the second insulation rubber are in stepped setting.Around
In process processed, it can guarantee the uniformity of winding displacement spacing by the second insulation rubber, to be further ensured that dielectric strength drawn game
Zoom level improves the service life of dry-type transformer.
3, the second insulating cement epidermis face in the present invention is evenly arranged with the distance between multiple indents, each indent
It is 1/5th of the second insulation rubber, the setting of indent can be adjusted according to the high-tension coil and production of different model
Spacing when whole coil winding, it is applied widely, and substantially increase production efficiency.
4, a kind of dry-type transformer provided by the present invention, including pedestal, iron core and be coated on iron core it is coaxial around
Group, the winding include low-voltage coil, cooling airway and high-tension coil, and the low-voltage coil is arranged in inner ring, the high-voltage line
Circle setting is arranged between low-voltage coil and high-tension coil in outer ring, the cooling airway.The present invention is in low-voltage coil and high pressure
Cooling airway is had additional between coil, is considerably increased coil and external heat exchange area, is accelerated the radiating rate of coil.
5, two adjacent surfaces of the cooling airway in the present invention and high-tension coil and low-voltage coil offer at least four and dissipate
Hot groove, and the heat dissipation groove surfaces are provided with active open, the active open includes sliding slot, glass plate and height adjustment dress
It sets, which can carry out height adjustment according to the temperature of inside transformer coil, and then adjust active open
Aperture carries out specific aim heat dissipation, and heat dissipation effect is small, and has saved the energy.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of dry-type transformer special high-pressure coil of the present invention；
Fig. 2 is a kind of loop construction schematic diagram of dry-type transformer of the present invention；
Fig. 3 is a kind of expanded schematic diagram of the cooling airway of dry-type transformer of the present invention；
Fig. 4 is a kind of structural schematic diagram of the height adjustment device of dry-type transformer of the present invention.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
The present invention discloses a kind of dry-type transformer special high-pressure coils, as shown in Figure 1, including flat bare copper wire 1 and wrapping
Two layers polyester film 2 on flat bare copper wire 1 is surrounded with polyester non-woven fabric 3 on the outer layer polyester film 2, the high-tension coil 6
Structure coil inside will not generate biggish bubble electric discharge at work, therefore partial discharge quantity is low, not will cause in coil
Portion's breakdown is burnt, and the reliability of transformer work is improved.Preferably, 3 upper surface layer of polyester non-woven fabric is pressed with insulation rubber, i.e.,
The insulation rubber is provided with demifacet, and the insulating cement skin includes the first insulation rubber 41 and the second insulation rubber 42, and described first
Insulation rubber 41 and the second insulation rubber 42 are integrally formed, and the first insulation rubber 41 and the second insulation rubber 42 are in step type
Setting, it is preferable that the width of the first insulation rubber 41 is equal to the length of flat 1 vertical cross-section of bare copper wire, second insulation
The width of rubber 42 is greater than the width of the first insulation rubber 41.In coiling process, since insulation rubber is arranged in flat bare copper wire 1
Most external, and be only provided with demifacet, will not only place the coiling of copper wire, but also can be according to the width of the second insulation rubber 42
Degree, away from positioning, guarantees that the uniformity of winding displacement spacing mentions to be further ensured that dielectric strength drawn game zoom level to winding department
The high service life of dry-type transformer, after coiling, insulation rubber can be torn can also stay at polyester non-woven fabric 3
Surface.It is further preferred that second insulation, 42 surface of rubber is evenly arranged with multiple indents 421, each institute in the present invention
/ 5th that the distance between indent 421 is the second insulation rubber 42 are stated, it in the actual production process can be between indent 421
Away from further being optimized, to be suitable for all kinds of transformers.The setting of indent 421 can be according to the high-tension coil of different model
6 and spacing of production when needing to be adjusted coil winding, i.e., the second insulation rubber 42 can be carried out according to the spacing of indent 421
The second insulation rubber 42 is torn, and then shortens the width of the second insulation rubber 42, it is applied widely, and substantially increase production
Efficiency.
Invention further discloses a kind of dry-type transformers including above-mentioned high-tension coil 6, including pedestal, iron core 8 and packet
The coaxial winding being overlying on iron core 8, as shown in Fig. 2, the coaxial winding is hollow type insulation winding, the winding includes low pressure
Coil 5, cooling airway 7 and high-tension coil 6, in inner ring, the high-tension coil 6 is arranged in outer ring, institute for the setting of low-voltage coil 5
Cooling airway 7 is stated to be arranged between low-voltage coil 5 and high-tension coil 6.The present invention increases between low-voltage coil 5 and high-tension coil 6
Equipped with cooling airway 7, coil and external heat exchange area are considerably increased, the radiating rate of coil is accelerated.
As shown in figure 3, two adjacent surfaces of cooling airway 7 and high-tension coil 6 and low-voltage coil 5 in the present invention open up
There is at least four heat dissipation groove 71, i.e., is provided with heat dissipation groove 71, dissipating on two faces on two faces of annular cooling airway 7
Hot 71 uniform intervals of groove, and the heat dissipation groove 71 on two faces is arranged in a staggered manner, to improve radiating efficiency.The heat dissipation groove 71
Height be less than cooling airway 7 height.71 surface of heat dissipation groove is provided with active open, and the active open includes sliding
Slot 72, glass plate 73 and height adjustment device 74, the sliding slot 72 are fixed at 7 outer surface of cooling airway, i.e. sliding slot 72 is set
It sets in the inside of cooling airway 7.The glass plate 73 is flexibly connected with sliding slot 72, i.e., adjusts active open by glass plate 73
Aperture, the lower end of glass plate 73 is arranged in height adjustment device 74.The height adjustment device 74 can be according to inside transformer
The temperature of coil carries out height adjustment, and then adjusts the aperture of active open, carries out specific aim heat dissipation, and heat dissipation effect is small, and saves
The about energy.As shown in figure 4, wherein height adjustment device 74 includes two casings and balancing device, the balancing device setting
In the top of two casings, described two casings are respectively first sleeve 741 and the second casing 742,741 He of first sleeve
Second casing 742 is arranged in parallel in the outer surface of cooling airway 7, and the lower end of glass plate 73, institute is arranged in second casing 742
It states first sleeve 741 not contact with glass plate 73, the both ends of the balancing device are movably arranged on first sleeve 741 and respectively
Inside two casings 742.Preferably, first sleeve 741 is internally provided with mercury 7411, which varies with temperature obviously, still
Also other positions be can be replaced.Second casing, 742 bottom is provided with spring 7421, the 742 inner wall two sides of the second casing
It is evenly arranged with bayonet 7422.Balancing device includes curved rod 743 and card ball, and the card ball includes active card ball 744 and fixes
Card ball 745, the active card ball 744 and fixing card ball 745 are separately positioned on the both ends of curved rod 743, the fixing card ball 745
It is arranged inside first sleeve 741, the active card ball 744 is arranged inside the second casing 742, a left side for the curved rod 743
Side is provided with support rod 746, and the support rod 746 offsets with 73 lower end of glass plate, and the card ball is hemispherical, the card ball
Diameter is greater than the width of bayonet 7422, and the radius of the card ball is less than the width of bayonet 7422.
The course of work：
When dry-type transformer does not work, temperature room temperature, active open is closed at this time；When the temperature of dry-type transformer coil
When degree gradually rises, the mercury 7411 in the second casing 742 experiences the variation of temperature, and as the variation of temperature expands,
Volume becomes larger, and then promotes fixing card ball 745 and curved rod 743.Since curved rod 743 is integrally formed, curved rod 743
After the lifting of one end, then the other end declines, i.e. under the action of curved rod 743,744 ontology of active card ball carries out active card ball 744
Rotation, due to active card ball 744 radius less than 742 bayonet 7422 of the second casing width, in 73 gravity of glass plate
Under effect, active card ball 744 and curved rod 743 are moved down, and support rod 746 and glass plate 73 is driven to move down, thus plus
The big aperture of active open under the action of 742 contained spring 7421 of the second casing, stops when dropping to a certain degree
Decline, and pass through the fixed position of bayonet 7422；Similarly, when dry-type transformer tapers off work, temperature is gradually reduced, water
The volume of silver 7411 is gradually restored to normally, and the buoyancy of fixing card ball 745 becomes smaller, and the ontology of active card ball 744 is driven to be revolved
Turn, glass plate 73 rises under the action of spring 7421, and then reduces the aperture of active open.
Embodiment 1：
A kind of dry-type transformer special high-pressure coil including flat bare copper wire 1 and surrounds the two layers polyester on flat bare copper wire 1
Film 2 is surrounded with polyester non-woven fabric 3 on the outer layer polyester film 2, and 3 upper surface layer of polyester non-woven fabric is pressed with insulating cement
Skin, the insulating cement skin include the first insulation rubber 41 and the second insulation rubber 42, and the first insulation rubber 41 and second is absolutely
Edge rubber 42 is integrally formed, and the first insulation rubber 41 and the second insulation rubber 42 are in stepped setting.First insulation
The width of rubber 41 is equal to the length of flat 1 vertical cross-section of bare copper wire.The width of the second insulation rubber 42 is greater than the first insulation
The width of rubber 41.Second insulation, 42 surface of rubber is evenly arranged with multiple indents 421, between each indent 421
Distance be second insulation rubber 42 1/5th.
The present embodiment can guarantee the uniformity of winding displacement spacing in coiling process by the second insulation rubber 42, thus
It is further ensured that dielectric strength drawn game zoom level.During the work time, the inside configuration of the high-tension coil 6 will not generate biggish
Bubble electric discharge, therefore partial discharge quantity is low, improves the reliability of transformer work.In addition the setting of indent 421 can basis
The high-tension coil 6 of different model and production need to be adjusted coil around spacing only, applied widely, and greatly improve
Production efficiency.
Embodiment 2：
On the basis of embodiment 1, the present invention also provides a kind of dry-type transformers, including pedestal, iron core 8 and cladding
In the coaxial winding on iron core 8, the coaxial winding is hollow type insulation winding, and the winding includes low-voltage coil 5, cooling air
Road 7 and high-tension coil 6, in inner ring, the high-tension coil 6 is arranged in outer ring, the cooling airway 7 for the setting of low-voltage coil 5
It is arranged between low-voltage coil 5 and high-tension coil 6.
The present embodiment has additional cooling airway 7 between low-voltage coil 5 and high-tension coil 6, considerably increases coil and outer
The heat exchange area in portion accelerates the radiating rate of coil.
Embodiment 3：
On the basis of embodiment 2, the cooling airway 7 and two adjacent surfaces of high-tension coil 6 and low-voltage coil 5 are opened
Equipped at least four heat dissipation groove 71, the height of the heat dissipation groove 71 is less than the height of cooling airway 7.The heat dissipation groove 71
Surface is provided with active open, and the active open includes sliding slot 72, glass plate 73 and height adjustment device 74, the sliding slot 72
It is fixed at 7 outer surface of cooling airway, the glass plate 73 is flexibly connected with sliding slot 72, and the height adjustment device 74 is arranged
In the lower end of glass plate 73.The height adjustment device 74 includes two casings and balancing device, and the balancing device setting exists
The top of two casings, described two casings are respectively first sleeve 741 and the second casing 742, the first sleeve 741 and
Two casings 742 are arranged in parallel in the outer surface of cooling airway 7, and the lower end of glass plate 73 is arranged in second casing 742, described
First sleeve 741 is not contacted with glass plate 73, and the both ends of the balancing device are movably arranged on first sleeve 741 and second respectively
Inside casing 742.First sleeve 741 is internally provided with mercury 7411, and 742 bottom of the second casing is provided with spring 7421,
Second casing, the 742 inner wall two sides are evenly arranged with bayonet 7422.The balancing device includes curved rod 743 and card ball, institute
Stating card ball includes active card ball 744 and fixing card ball 745, and the active card ball 744 and fixing card ball 745 are separately positioned on arc
The both ends of bar 743, the fixing card ball 745 are arranged inside first sleeve 741, and the active card ball 744 is arranged at second set
Inside pipe 742, the left side of the curved rod 743 is provided with support rod 746, and the support rod 746 offsets with 73 lower end of glass plate,
The card ball is hemispherical, and the diameter of the card ball is greater than the width of bayonet 7422, and the radius of the card ball is less than bayonet 7422
Width.
The present embodiment has additional heat dissipation groove 71 and active open, the structure can be according to change on the basis of embodiment 2
The temperature of depressor Inside coil carries out active open aperture regulation, carries out specific aim heat dissipation, heat dissipation effect is small, and has saved energy
Source meets the objective of sustainable development.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (9)
1. a kind of dry-type transformer special high-pressure coil, it is characterised in that：Including flat bare copper wire (1) and surround flat bare copper wire
(1) the two layers polyester film (2) on is surrounded with polyester non-woven fabric (3), the non-woven polyester on the outer layer polyester film (2)
Cloth (3) upper surface layer is pressed with insulation rubber, and the insulating cement skin includes that the first insulation rubber (41) and second insulate rubber (42),
First insulation rubber (41) and the second insulation rubber (42) are integrally formed, first insulation rubber (41) and the second insulation
Rubber (42) is in stepped setting, and first insulation rubber (41) is in polyester non-woven fabric (3) upper surface layer, second insulation
Rubber (42) is on the right side of the first insulation rubber (41), and height is lower than the first insulation rubber (41), the second insulation rubber
(42) surface is evenly arranged with multiple indents (421), and the distance between each described indent (421) is the second insulation rubber (42)
/ 5th of width.
2. a kind of dry-type transformer special high-pressure coil according to claim 1, it is characterised in that：First insulating cement
The width of skin (41) is equal to the length of flat bare copper wire (1) transversal cross-section.
3. a kind of dry-type transformer special high-pressure coil according to claim 1, it is characterised in that：Second insulating cement
The width of skin (42) is greater than the width of the first insulation rubber (41).
4. a kind of dry-type transformer including high-tension coil as claimed in any one of claims 1 to 3, it is characterised in that：Including
Pedestal, iron core (8) and the coaxial winding being coated on iron core (8), the coaxial winding be hollow type insulation winding, it is described around
Group includes low-voltage coil (5), cooling airway (7) and high-tension coil (6), and the low-voltage coil (5) is arranged in inner ring, the high pressure
Coil (6) setting is arranged between low-voltage coil (5) and high-tension coil (6) in outer ring, the cooling airway (7).
5. a kind of dry-type transformer according to claim 4, it is characterised in that：The cooling airway (7) and high-tension coil
(6) and two adjacent surfaces of low-voltage coil (5) offer at least four heat dissipation groove (71), the height of heat dissipation groove (71)
Degree is less than the height of cooling airway (7).
6. a kind of dry-type transformer according to claim 5, it is characterised in that：Heat dissipation groove (71) surface is provided with
Active open, the active open include sliding slot (72), glass plate (73) and height adjustment device (74), and the sliding slot (72) is solid
Fixed to be arranged in cooling airway (7) outer surface, the glass plate (73) is flexibly connected with sliding slot (72), the height adjustment device
(74) it is arranged in the lower end of glass plate (73).
7. a kind of dry-type transformer according to claim 6, it is characterised in that：The height adjustment device (74) includes two
The top of two casings is arranged in a casing and balancing device, the balancing device, and described two casings are respectively first sleeve
(741) and the second casing (742), the first sleeve (741) and the second casing (742) are arranged in parallel in cooling airway (7)
Outer surface, second casing (742) setting in the lower end of glass plate (73), the first sleeve (741) not with glass plate
(73) it contacts, the both ends of the balancing device are movably arranged on first sleeve (741) respectively and the second casing (742) is internal.
8. a kind of dry-type transformer according to claim 7, it is characterised in that：Setting inside the first sleeve (741)
Have mercury (7411), the second casing (742) bottom is provided with spring (7421), the second casing (742) inner wall two sides
It is evenly arranged with bayonet (7422).
9. a kind of dry-type transformer according to claim 7, it is characterised in that：The balancing device includes curved rod
(743) and card ball, the card ball includes active card ball (744) and fixing card ball (745), the active card ball (744) and fixed
Card ball (745) is separately positioned on the both ends of curved rod (743), and fixing card ball (745) setting is in first sleeve (741)
Portion, active card ball (744) setting is internal in the second casing (742), is provided with support rod on the left of the curved rod (743)
(746), the support rod (746) offsets with glass plate (73) lower end, and the card ball is hemispherical, and the diameter of the card ball is greater than
The width of bayonet (7422), the radius of the card ball are less than the width of bayonet (7422).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008009.0A CN106710839B (en) | 2017-01-05 | 2017-01-05 | A kind of dry-type transformer and its special high-pressure coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710008009.0A CN106710839B (en) | 2017-01-05 | 2017-01-05 | A kind of dry-type transformer and its special high-pressure coil |
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| Publication Number | Publication Date |
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| CN106710839A CN106710839A (en) | 2017-05-24 |
| CN106710839B true CN106710839B (en) | 2018-11-16 |
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| CN113593895A (en) * | 2021-06-09 | 2021-11-02 | 广州市一变电气设备有限公司 | Dry-type transformer high-voltage coil winding method and dry-type transformer high-voltage coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2479357A (en) * | 1945-01-10 | 1949-08-16 | Westinghouse Electric Corp | Method of making electrical insulations |
| DE2142571B1 (en) * | 1971-08-20 | 1972-06-08 | Siemens Ag | INSULATING TAPE FOR THE PRODUCTION OF AN INSULATING SLEEVE FOR ELECTRIC CONDUCTORS IMPREGNATED WITH A HEAT-CURING EPOXY RESIN-ACID ANHYDRIDE HARDER MIXTURE |
| JPS54162120A (en) * | 1978-06-14 | 1979-12-22 | Hitachi Ltd | Internal combustion engine ignition coil |
| JPS55145310A (en) * | 1979-04-28 | 1980-11-12 | Toshiba Corp | Resin molded coil |
| CN103390493B (en) * | 2013-08-06 | 2016-03-02 | 天津维可特电力科技有限公司 | A kind of winding method with filler high-tension coil |
| CN105199322B (en) * | 2015-10-10 | 2017-03-22 | 苏州大学 | Epoxy resin microsphere and preparation method thereof |
| CN205692668U (en) * | 2016-05-05 | 2016-11-16 | 山东长洲电气有限公司 | A kind of low office is allowed to dry changing resin coil |
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