CN106710828B - A kind of three-dimensional winding iron core resin insulating dry type transformer - Google Patents
A kind of three-dimensional winding iron core resin insulating dry type transformer Download PDFInfo
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- CN106710828B CN106710828B CN201710010616.0A CN201710010616A CN106710828B CN 106710828 B CN106710828 B CN 106710828B CN 201710010616 A CN201710010616 A CN 201710010616A CN 106710828 B CN106710828 B CN 106710828B
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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
- H01F27/24—Magnetic cores
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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
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- 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
- H01F27/2876—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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Insulating Of Coils (AREA)
Abstract
The present invention provides a kind of three-dimensional winding iron core resin insulating dry type transformers, including transformer body, transformer body includes three-dimensional winding iron core, three-dimensional winding iron core includes the single frame of three round rectangle mount structures, three single frame arrangements piece together three-dimensional equilateral triangle body, the mosaic of two neighboring single frame is intertwined and connected by coil, form three windings, each winding one-piece casting curing agent solidification molding, three-dimensional winding iron core upper and lower ends are clamped by upper clamping piece and lower clamping piece respectively, and it is fixed on a transformer base, upward type cooling blower is equipped in lower clamping piece, lower clamping piece upper surface hollow out, upward type cooling blower air port is upward, along winding axis direction quenching.A kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, it is located at below winding using upward type wind turbine, it dries to upper edge winding axis direction below from winding, pressure cooling is carried out to winding, to keep the heat dissipation of transformer balanced, it prevents the phenomenon that prevents wind from passing through, extends transformer service life.
Description
Technical field
The present invention relates to transformer technology field more particularly to a kind of raising heat sinking functions, while improving transformer machinery
Intensity and a kind of three-dimensional winding iron core resin insulating dry type transformer for being resistant to short-circuit capacity.
Background technology
Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and major function has：Voltage transformation, electricity
Rheology is changed, impedance converts, be isolated, voltage stabilizing etc..Transformer is the important equipment in power generation, power supply and electricity consumption enterprise, it is in power grid
In be also at extremely crucial status, be to ensure that power grid security, reliable operation and people's production and household electricity are of crucial importance
Equipment.
And a kind of Power-saving-type Power Transformer in three-dimensional reel iron core transformer room, it has creatively reformed conventional electric power transformation
The laminated magnetic line structure and three-phase of device are laid out, and properties of product is made more to optimize.
As Chinese patent CN105529145A discloses a kind of three-dimensional winding iron core resin insulating dry type transformer, including transformation
Device pedestal, the upper clamping piece and lower clamping piece being correspondingly arranged at up and down on transformer base, and it is clamped at upper clamping piece and lower clamping piece
Between three-dimensional winding iron core, the three-dimensional winding iron core includes three lists that middle part is formed with that hollow out and shape are round rectangle structure
Frame, three single frames spatial arrangement in equilateral triangle is stitched together, and each single frame is respectively by several silicon steel ladders
Shape material strip is continuously wound successively, and the mosaic of single frame described in each two is wound with coil respectively, and each coil is whole
Curing agent and heated curing molding are poured into a mould, and each coil outer is epoxy resin enclosed, the transformer base
On be additionally provided with multiple side blown type wind turbines, the three-dimensional winding iron core top is connected with HV Terminal and low-voltage terminal, the three-dimensional winding iron
Core side is also associated with high-voltage tap end.Technical solution disclosed by the invention has three-dimensional winding iron core, energy saving material saving, zero load damage
Consumption, no-load current are low, low noise, good electric property, shelf depreciation value is low, resistance to lightning impulse ability is strong, anti-short circuit capability is strong, machine
The high feature of tool intensity.But the technical solution that the patent of invention discloses still remains following deficiency：Transformer bottom it is side-blown
Formula wind turbine is dried to the center position of transformer respectively, therefore, can be in transformation when three transformers open simultaneously quenching
The area that prevents wind from passing through is generated at device inner hub location, the area that prevents wind from passing through is unsmooth due to being easily caused ventilation by blowing while three directions, because
This, using such cooling structure can due to cooling heat dissipation is uneven there are the unbalanced problems of heat inside and outside serious.
To solve the above-mentioned problems, Chinese patent CN204632510U discloses dry type stereoscopic triangular coiled-core transformer
And its cooling structure, including pressure air source and the ventilation shaft as iron core lower clamping piece, the ventilation shaft are inner hollow
Pipeline configuration, and one end close, one end be opening, ventilation shaft opening be connected to pressure air source, ventilation shaft
Upper surface is equipped with venthole；The cooling structure further includes intake stack, and the intake stack is connected to ventilation shaft and pressure is empty
Between air source, one end of intake stack and the open of ventilation shaft connect, and the other end is connect with pressure air source.The cooling structure
In ventilation shaft iron core lower clamping piece as transformer simultaneously, i.e., by iron core lower clamping piece by original U-steel structure of modification at
Hollow pipeline configuration, to constitute the ventilation shaft for the cold air that circulates, to keep the heat dissipation of the dry-type transformer balanced,
Good heat dissipation effect can extend the service life of dry-type transformer；Also, when venthole is arranged on ventilation shaft, by that will go out
Stomata along transformer winding air flue distribution and be arranged by iron core heat-removal modalities, even if venthole setting with winding air flue and
The identical position of inside transformer center of gravity heat dissipation, in this way, when pressure air source provides cold air, cold air can be opposite
The air flue and inside transformer (center of gravity) of transformer winding are blown, and have been reached ideal heat dissipation effect, have also been extended transformer
Service life.But in technical solution disclosed by the utility model, pressure air source is installed separately with transformer, and the two it
Between need to connect by intake stack, therefore, it is necessary to additionally occupy installation space, while improving installation cost.
Invention content
To overcome the problems such as above-mentioned existing in the prior art, the present invention provides a kind of raising heat sinking functions, carry simultaneously
High transformer mechanical strength and a kind of three-dimensional winding iron core resin insulating dry type transformer for being resistant to short-circuit capacity.
A kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, including transformer body, the transformation
Device ontology includes three-dimensional winding iron core, and the three-dimensional winding iron core includes the single frame of three round rectangle mount structures, three single frames
Arrangement piece together three-dimensional equilateral triangle body, the mosaic of the two neighboring single frame is intertwined and connected by coil, formed three around
Group, each winding one-piece casting curing agent solidification molding, the three-dimensional winding iron core upper and lower ends respectively by upper clamping piece and
Lower clamping piece is clamped, and is fixed on a transformer base, is equipped with upward type cooling blower in the lower clamping piece, on the lower clamping piece
Surface hollow-out, upward type cooling blower air port is upward, along winding axis direction quenching.The present invention carries as a result,
A kind of cooling blower of the three-dimensional winding iron core resin insulating dry type transformer supplied is set to immediately below winding, immediately below the winding along around
Group is axial to dry straight up, forces cooling for transformer, three wind turbines is avoided to show to blowing generation and preventing wind from passing through, scattered to improve
Hot property.
In some embodiments, the upper clamping piece and lower clamping piece are respectively a monoblock type three-pointed hollow star formed steel construction,
The apex angle of the monoblock type three-pointed hollow star formed steel construction is located above three windings.Folder from top to bottom uses as a result,
Monolithic construction protects entire three-dimensional winding iron core, not by external force, effectively can compress and support winding in manufacture, transportational process,
Improve anti-axial direction electrodynamic ability when transformer sudden short circuit.
In some embodiments, the lower clamping piece is section into the three-pointed hollow star formed steel construction of " u "-shaped, the lower folder
It is equipped with cavity in the middle part of part " u "-shaped, the upward type cooling blower is set in the cavity.Upward type cooling blower is determined as a result,
Immediately below the winding, realize upward type cooling blower along axis of winding to up-draught.
In some embodiments, if there are three the upward type cooling blower, three upward type cooling blowers point
She Yu not be in the three side cavity of the lower clamping piece of triangle, upward type cooling blower air port is upward, along the winding axis
Line direction quenching.Three upward type wind turbines are respectively that three windings carry out pressure cooling as a result, improve heat dissipation performance.
In some embodiments, the winding includes positioned at the low-voltage coil of internal layer and outside the low-voltage coil
High-tension coil, the low-voltage coil be foil or cylinder mode, the high-tension coil use sectional circular core structure, it is described around
Group is encapsulated entirely through epoxy resin solids insulating layer.Low-voltage coil uses Foil winding as a result, makes coil both ends without spiral
Angle, thus uneven ampere-turn significantly reduces, anti-short circuit capability greatly enhances, and low-voltage coil uses core structure and high-voltage line
Circle uses sectional circular core structure, and winding is encapsulated entirely through epoxy resin solids insulating layer, makes winding and resin insulating barrier
A complete steel body is formed, mechanical strength and the ability and compressive resistance of tolerance short circuit are improved.Winding is entirely through ring
Oxygen resin solid insulating layer is encapsulated, thus not only moisture is difficult to invade, but also has blocked conductor by various pernicious gases completely
The possibility encroached on aggressive chemistry composition, thus improve its moisture-proof and antifouling property.
In some embodiments, the electromagnetic wire of the low-voltage coil and high-tension coil uses thickness for 0.14mm-
The paper covered wire of 0.18mm.As a result, under conditions of meeting transformer electric property, transformer coil volume can be reduced, reduces material
The dosage of material plays the role of saving wire rod and silicon steel sheet, to improve the economy of transformer.
In some embodiments, glass mat insulating layer is set between the adjacent circle per layer line in winding.Glass fibers as a result,
Dimension has self extinguishment characteristics, electric arc will not be generated because of short circuit, therefore have fire-retardant, explosion-proof characteristic.
In some embodiments, equipped with several annular axle body heat dissipation wind channels for heat dissipation, radiation air in the winding
Road is encapsulated in winding, is supported by multi-disc radiating fin in the heat dissipation wind channel, and the radiating fin is arranged along axis of winding,
And both sides are connect with heat dissipation wind channel inner wall respectively.The heat dissipation performance of transformer, while radiating fin can be improved in air duct setting as a result,
Setting can further improve the heat dissipation performance of transformer.
In some embodiments, the radiating fin in heat dissipation wind channel described in adjacent two ring is staggered, not same
In one plane.The radiating fin in heat dissipation wind channel described in adjacent two ring is staggered as a result, then heat dissipation channel is made to interlock
Setting is convenient for heat diffusion, improves heat dissipation performance.
In some embodiments, several heat dissipation branch pieces, the heat dissipation branch piece and institute are connected on each radiating fin
It is vertical to state radiating fin.
Compared with prior art, the advantageous effect of a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention
It is：
One, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, using upward type wind turbine be located at around
Group lower section dries from winding lower section to upper edge winding axis direction, pressure cooling is carried out to winding, to make the heat dissipation of transformer
Equilibrium prevents the phenomenon that prevents wind from passing through, and extends the service life of transformer.
Two, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, upper and lower folder use monoblock type knot
Structure protects entire three-dimensional winding iron core, not by external force, effectively can compress and support winding in manufacture, transportational process, improve transformation
Anti- axial direction electrodynamic ability when device sudden short circuit.
Three, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, winding are poured using thin insulating
Structure, the resin mixture poured can be completely impregnated into each gap of coil, prevent the presence in gap, effectively inhibit part
Electric discharge phenomena generate, and partial discharge quantity is no more than 10pC.
Four, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, 315kVA and the above capacity use
Foil winding, voltage between layers is low, and capacitance is big, therefore its lightning impulse resistant ability is strong；Low-voltage coil uses core structure and high pressure
Coil uses sectional circular core structure, and winding is encapsulated entirely through epoxy resin solids insulating layer, makes winding and insulation resin
Layer forms a complete steel body, improves mechanical strength and the ability and compressive resistance of tolerance short circuit.
Five, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention is equipped with heat dissipation between transformer coil
Channel, and radiating fin is set in heat dissipation channel, therefore improve the heat dissipation performance of transformer.
Six, a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention, winding is entirely through epoxy resin
Solid insulating layer is encapsulated, thus not only moisture is difficult to invade, but also has blocked conductor by various pernicious gases and corrosion completely
Property chemical analysis infringement possibility, thus improve its moisture-proof and antifouling property.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of three-dimensional winding iron core resin insulating dry type transformer provided by the invention；
Fig. 2 is that the structure that a kind of three-dimensional winding iron core resin insulating dry type transformer neutral body provided by the invention rolls up iron core is shown
It is intended to；
Fig. 3 is the structural representation of lower clamping piece in a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention
Figure；
Fig. 4 is that upward type cooling blower is placed in a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention
Structural schematic diagram after lower clamping piece；
Fig. 5 is the structural schematic diagram on lower clamping piece wherein one side in Fig. 4；
Fig. 6 is the sectional view of winding in a kind of three-dimensional winding iron core resin insulating dry type transformer provided by the invention.
Specific implementation mode
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.
Fig. 1 to Fig. 6 schematically shows a kind of three-dimensional winding iron core resin provided according to one embodiment of the present invention
Insulating dry type transformer.
As shown in Figure 1, the present invention discloses a kind of three-dimensional winding iron core resin insulating dry type transformer, including transformer body
1, transformer body 1 includes three-dimensional winding iron core 10, and the upper clamping piece 12 and lower clamping piece 13, Yi Jigu of the three-dimensional winding iron core 10 is clamped
The transformer base (not shown in figure 1) of the fixed transformer body 1.
As shown in Fig. 2, in this embodiment of the invention, three-dimensional winding iron core 10 includes the list of three round rectangle mount structures
Frame 101 forms, as shown in Fig. 2, three single frames 101 are connected two-by-two successively, arrangement pieces together three-dimensional equilateral triangle body.This structure will
The arrangement mode of iron core carries out more rational combination, and three-dimensional equilateral triangle is pieced together using three identical single frames,
Realize that the tri-phase iron core magnetic circuit of product is full symmetric isometric, it is ensured that three phase supply balances, and magnetic resistance is made to greatly reduce, excitatory electricity
Stream, no-load loss significantly reduce；Meanwhile stereo-triangular wound iron core seamless, that is, high energy consumption area is not present, can give full play to excellent
The high magnetic conduction feature of matter core material maximally reduces the loss that the pore belt formed by seam crossing is come, in addition, using three-dimensional volume
Iron core improves space availability ratio, compact-sized, reduces floor space.Preferably, in this embodiment of the invention
In, three single frames 101 are respectively adopted trapezoidal silicon steel material strip and once wind, wound between silicon strip it is close, magnetic conduction direction with
The magnetic circuit direction of iron core is completely the same, and therefore, when work is with small vibration, solves folded iron core because of magnetic circuit is discontinuous making an uproar of sending out
Sound reduces influence of noise when work.
As shown in Figure 1, in this embodiment of the invention, the mosaic of two neighboring single frame 101 is wound by coil to be connected
It connects, then forms three windings 11, as shown in figures 1 to 6, each winding 11 respectively includes the low-voltage coil 1101 positioned at internal layer
And the high-tension coil 1102 outside low-voltage coil 1101, preferably, in this embodiment of the invention, low-voltage coil
1101 and the electromagnetic wire of high-tension coil 1102 use thickness for the paper covered wire of 0.14mm-0.18mm, therefore, meeting transformer electricity
Under conditions of device performance, transformer coil volume can be reduced, reduces the dosage of material, plays the work for saving wire rod and silicon steel sheet
With to improve the economy of transformer.As it is further preferred that the adjacent setting glass mat per interlayer of winding 11 insulate
Layer, the glass fibre in winding 11 has self extinguishment characteristics, electric arc will not be generated because of short circuit, therefore have fire-retardant, explosion-proof characteristic.
As still more preferably, in this embodiment of the invention, low-voltage coil 1101 is foil or cylinder mode, and is held exhausted
Edge uses resin batch mixing seal, and in this embodiment of the invention, low-voltage coil 1101 is illustrated for using foil structure,
High-tension coil 1102 uses sectional circular core structure, and entire winding 11 is entirely through epoxy resin and curing agent solid insulating layer packet
Envelope.This structure makes coil both ends without helical angle, thus uneven ampere-turn significantly reduces, and anti-short circuit capability greatly enhances, high
Crimping circle 1102 uses sectional circular core structure, and winding 11 is encapsulated entirely through epoxy resin solids insulating layer, makes winding 11
A complete steel body is formed with resin insulating barrier, improves mechanical strength and the ability and compressive resistance of tolerance short circuit, around
Group 11 is encapsulated entirely through epoxy resin solids insulating layer, thus not only moisture is difficult to invade, but also has blocked conductor completely
The possibility encroached on by various pernicious gases and aggressive chemistry composition, thus improve its moisture-proof and antifouling property.
As shown in Figure 1, being encapsulated with shell 112 outside every group of winding 11, it is equipped on the shell 112 for drawing lead
Outlet terminal, shell 112 does further safeguard protection to winding, and in this embodiment of the invention, shell 112 is not using
Rust steel or aluminum alloy materials are made.Degree of protection using shell made of stainless steel 112 reaches IP20, using aluminum alloy materials
The degree of protection of manufactured shell 112 reaches IP23, and IP20 shells can prevent solid foreign materials of the diameter more than 12mm from entering, IP23
Shell, which more has both, to be prevented from flowing into the water droplet within 60 ° of angles of vertical line, therefore suitable for outdoor operation.
Preferably, as shown in Fig. 1 and Fig. 3 to Fig. 5, in this embodiment of the invention, upper clamping piece 12 and lower clamping piece
13 be respectively a monoblock type three-pointed hollow star formed steel construction, as shown in Figure 1, the apex angle of monoblock type three-pointed hollow star formed steel construction point
Not Wei Yu three windings, 11 top, therefore, upper clamping piece 12 and lower clamping piece 13 in this structure use monolithic construction, protection entire
Three-dimensional winding iron core, not by external force, effectively can compress and support winding, when improving transformer sudden short circuit in manufacture, transportational process
The anti-electrodynamic ability of axial direction.In addition, as it is further preferred that as shown in Figures 3 to 5, in this of the invention embodiment,
Lower clamping piece 13 is section into the three-pointed hollow star formed steel construction of " u "-shaped, 13 upper surface hollow out of lower clamping piece, is equipped in lower clamping piece 13 upper
Formula cooling blower 15 is blown, as shown in figure 3, in this embodiment of the invention, cavity 131 is equipped in the middle part of 13 " u "-shaped of lower clamping piece, such as
Shown in Fig. 4 and Fig. 5, the above-mentioned upward type cooling blower 15 of setting in cavity 131, the air port of upward type cooling blower 15 is upward, edge
11 axis direction quenching of winding.As shown in figure 4, in this embodiment of the invention, if there are three upward type cooling blowers
15, three upward type cooling blowers 15 are respectively arranged in the 13 3 side cavity 131 of lower clamping piece of triangle, therefore, make upward type
Cooling blower 15 is set to immediately below winding 11, is dried straight up along axis of winding immediately below winding 11, is forced for transformer
It is cooling, avoid three wind turbines from showing to blowing generation and preventing wind from passing through, to improve heat dissipation performance.
As it is further preferred that in this of the invention embodiment, upper clamping piece 12, lower clamping piece 13 and transformer base,
Surface is coated with corrosion protection layer, preferably, corrosion protection layer uses acrylic polymer to upper clamping piece 12, lower clamping piece
13 and transformer base carry out corrosion-mitigation scale-inhibition processing.
As shown in Figure 1, winding 11 is located between upper clamping piece 12 and lower clamping piece 13, upper clamping piece 12 and lower clamping piece 13 pass through spiral shell
Bolt is fixed, and winding 11 is clamped.Several cushion blocks, lower clamping piece 13 and three-dimensional winding iron core are equipped between 11 upper surface of upper clamping piece 12 and winding
Rubber packing is lined between 10 and transformer base respectively, to mitigate the noise of transformer at runtime, by upper clamping piece 12 and
The tightening of lower clamping piece 13 and several cushion blocks securely fix winding 11, prevent winding 11 from being moved in upper and lower, left and right directions, so that
Three-dimensional winding iron core 10 and winding 11 are not influenced as possible by external mechanical stress.
As shown in Figure 1,12 both sides of upper clamping piece are respectively equipped with high-tension insulator 121 and low tension insulator 122,11 outlet of winding
It is drawn from outlet terminal after connection set Dyn11 connections, the high-voltage connection and high pressure of the high-tension coil drawn from outlet terminal
Insulator 121 connects, and the low-voltage lead that low-voltage coil is drawn is connect with low tension insulator 122, facilitates terminal block, high-voltage connection
And low-voltage lead is wrapped up by insulation tube.It is additionally provided with the tap 1211 of high-voltage winding in high-pressure side, as shown in Figure 1, high pressure
The tap 1211 of winding is located at 11 side of winding.
As another inventive point of the invention, as shown in fig. 6, a kind of three-dimensional winding iron core insulation resin provided by the invention is dry
Formula transformer, the interior several annular axle body heat dissipation wind channels 111 for heat dissipation of setting of winding 11, as shown in fig. 6, heat dissipation wind channel 111
It along the axial setting of winding 11, positioned at coil between, is encapsulated in winding 11, as preferred, passes through in heat dissipation wind channel 111 more
Piece radiating fin 1111 supports, and radiating fin 1111 is uniformly distributed along the axial setting of winding 11, and both sides respectively with heat dissipation wind channel
111 inner walls connect, and the heat dissipation performance of transformer can be improved in the setting of heat dissipation wind channel 111, while the setting of radiating fin 1111 can
The heat dissipation performance for further increasing transformer, as it is further preferred that radiating fin in adjacent two rings heat dissipation wind channel 111
1111 are staggered, not in the same plane, the radiating fin 1111 in heat dissipation wind channel 111 described in adjacent two ring as a result,
It is staggered, then heat dissipation channel is made to be staggered, be convenient for heat diffusion, improve heat dissipation performance.As still more preferably
, as shown in fig. 6, connecting several heat dissipation branch pieces 1112 on each radiating fin 1111, heat dissipation branch piece 1112 is axial along winding 11
Setting, and it is vertical with radiating fin 1111, in this structure, further setting radiates branch piece 1112 just on radiating fin 1111
It is transmitted from heat dissipation branch piece 1112 in heat, improves heat dissipation performance.
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, be not to be taken as excluding other embodiments, and can be used for various other combinations, modification and
Environment, and can be changed by the above teachings or related fields of technology or knowledge in the scope of the invention is set forth herein
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 the claims.
Claims (8)
1. a kind of three-dimensional winding iron core resin insulating dry type transformer, which is characterized in that including transformer body (1), the transformation
Device ontology (1) includes three-dimensional winding iron core (10), and the three-dimensional winding iron core (10) includes the single frame of three round rectangle mount structures
(101), three single frame (101) arrangements piece together three-dimensional equilateral triangle body, the mosaic of the two neighboring single frame (101)
It is intertwined and connected by coil, forms three windings (11), each winding (11) one-piece casting curing agent solidification molding is described
Three-dimensional winding iron core (10) upper and lower ends are clamped by upper clamping piece (12) and lower clamping piece (13) respectively, and are fixed on a transformer base
On, the upper clamping piece (12) and lower clamping piece (13) they are respectively a monoblock type three-pointed hollow star formed steel construction, and the monoblock type is hollow
The apex angle of delta-type steel construction is located at three windings (11) both ends, and it is cold to be equipped with upward type in the lower clamping piece (13)
But wind turbine (15), the upward type cooling blower (15) are three, and three upward type cooling blowers (15) are respectively arranged on three
In (13) the three side cavity of the lower clamping piece of angular shape, lower clamping piece (13) upper surface hollow out, the upward type cooling blower
(15) air port is upward, along the winding (11) axis direction quenching.
2. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 1, which is characterized in that the lower folder
Part (13) is three-pointed hollow star formed steel construction of the section at " u "-shaped, and cavity (131) is equipped in the middle part of the lower clamping piece " u "-shaped, described
The setting upward type cooling blower (15) in cavity.
3. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 1, which is characterized in that the winding
(11) include positioned at internal layer low-voltage coil and the high-tension coil outside the low-voltage coil, the low-voltage coil be foil or
Cylinder mode, the high-tension coil use sectional circular core structure, the winding (11) exhausted entirely through epoxy resin solids
Edge layer is encapsulated.
4. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 3, which is characterized in that the low pressure
The electromagnetic wire of coil and high-tension coil uses thickness for the paper covered wire of 0.14mm-0.18mm.
5. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 3, which is characterized in that the winding
(11) glass mat insulating layer is set between the adjacent circle per layer line in.
6. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 3, which is characterized in that the winding
Interior to be equipped with several annular axle body heat dissipation wind channels (111) for heat dissipation, the heat dissipation wind channel (111) is encapsulated in the winding (11)
It is interior, it is supported by multi-disc radiating fin (1111) in the heat dissipation wind channel (111), the radiating fin (1111) is along winding (11)
Axial setting, and both sides are connect with heat dissipation wind channel (111) inner wall respectively.
7. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 6, which is characterized in that adjacent two ring
The radiating fin (1111) in the heat dissipation wind channel (111) is staggered, not in the same plane.
8. a kind of three-dimensional winding iron core resin insulating dry type transformer according to claim 6, which is characterized in that each described
Several heat dissipation branch pieces (1112), the heat dissipation branch piece (1112) and the radiating fin (1111) are connected on radiating fin (1111)
Vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010616.0A CN106710828B (en) | 2017-01-06 | 2017-01-06 | A kind of three-dimensional winding iron core resin insulating dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710010616.0A CN106710828B (en) | 2017-01-06 | 2017-01-06 | A kind of three-dimensional winding iron core resin insulating dry type transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106710828A CN106710828A (en) | 2017-05-24 |
| CN106710828B true CN106710828B (en) | 2018-08-17 |
Family
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| CN201710010616.0A Active CN106710828B (en) | 2017-01-06 | 2017-01-06 | A kind of three-dimensional winding iron core resin insulating dry type transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164667A (en) * | 2019-05-23 | 2019-08-23 | 安徽皖翔电力设备有限公司 | A kind of dry-type transformer convenient for heat dissipation |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215987B (en) * | 2018-11-14 | 2020-11-10 | 天津市特变电工变压器有限公司 | Epoxy resin pouring dry type transformer high-voltage coil assembly structure and molding process |
| CN109494060A (en) * | 2018-11-23 | 2019-03-19 | 广州中车骏发电气有限公司 | A kind of low pressure multi-tap transformer being capable of providing multiple voltage grade |
| JP7165623B2 (en) * | 2019-05-24 | 2022-11-04 | 株式会社日立産機システム | three-dimensional core transformer |
| CN112885577B (en) * | 2021-01-15 | 2021-10-08 | 中变集团上海变压器有限公司 | Dry-type transformer with oval iron core |
| US11842837B2 (en) | 2021-01-15 | 2023-12-12 | Zhongbian Group Shanghai Transformer Co., Ltd. | Dry-type transformer with elliptical iron core |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100002141U (en) * | 2008-08-20 | 2010-03-03 | 주식회사 다원시스 | Dry transformer |
| CN102881413A (en) * | 2012-08-30 | 2013-01-16 | 万达集团股份有限公司 | Dry-type transformer with three-dimensional core |
| CN105529145A (en) * | 2014-09-30 | 2016-04-27 | 国家电网公司 | Resin insulation dry type transformer with three-dimensional roll iron core |
| CN205621570U (en) * | 2016-01-29 | 2016-10-05 | 齐侠 | Two open core dry -type transformer of foldable solid |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110164667A (en) * | 2019-05-23 | 2019-08-23 | 安徽皖翔电力设备有限公司 | A kind of dry-type transformer convenient for heat dissipation |
| CN110164667B (en) * | 2019-05-23 | 2021-07-02 | 安徽皖翔电力设备有限公司 | Dry-type transformer convenient to heat dissipation |
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| CN106710828A (en) | 2017-05-24 |
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