CN106663526A - Molded transformer - Google Patents
Molded transformer Download PDFInfo
- Publication number
- CN106663526A CN106663526A CN201580038819.XA CN201580038819A CN106663526A CN 106663526 A CN106663526 A CN 106663526A CN 201580038819 A CN201580038819 A CN 201580038819A CN 106663526 A CN106663526 A CN 106663526A
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- CN
- China
- Prior art keywords
- insulant
- block
- insulation board
- wide cut
- primary winding
- 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.)
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—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
-
- 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
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
-
- 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
- H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulating Of Coils (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
A molded transformer according to one embodiment of the present invention has a primary coil and a secondary coil that is disposed in a state in which a prescribed space is provided on the inside of the primary coil, and the molded transformer has a configuration in which the primary and secondary coils are supported by a plurality of support structures. The plurality of support structures are provided between the ends of the primary and secondary coils and a frame, and each support structure is formed by an insulator block and a wide insulating plate that has a wider surface area than the bottom surface area of the insulator block. A top surface of the insulator block is abutted to the ends of the primary and secondary coils, and the wide insulating plate is disposed between the bottom surface of the insulator block and the frame.
Description
Technical field
The present invention relates to mold transformer.
Background technology
As the document of the background technology of open the art, for example, there is patent document 1 shown below.Patent document
In 1, disclose the high pressure winding (primary winding) and low pressure winding (secondary coil) of the tubular for having carried out resin transfer molding every
The insulation spacer being made up of the Compartmentalized resin portion for having resilient rubber spacers and have cured, the frame of transformer is fixed on
The mold transformer of the structure on frame.
In general, mold transformer is arranged on to be provided as being operated in the switchgear house that outside atmosphere cannot directly enter.But
It is in recent years, to expect the range of application for expanding mold transformer.So, from now on, exist to be arranged on and do not envision before this as molding
Possibility in the more particular surroundings such as dust, moisture, the salinity of the setting place of transformer.Certainly, in such environment
Under operating in, it is also desirable to guarantee and be provided as reliability equal in the environment of outside atmosphere cannot directly enter.
In the more environment of dust, moisture, salinity, need to consider the corrosion phenomenon that creepage trace phenomenon etc. causes.It is special
It is not rubber part corrosion resistance reduction because of impurity such as adhesive dust, moisture, salinities of insulation spacer, causes what electric field was concentrated
Increase.As a result, because of the erosion progress of rubber part, insulaion resistance is reduced, there is creepage trace phenomenon with insulant block together
The possibility of progress and generation insulation breakdown.
In order to improve the insulating properties of transformer, therefore, to assure that the creeping discharge between metal beyond coil and coil
Beeline (distance on the surface of the insulating element between metal along beyond being configured in coil and coil) is larger.For example with
In lower shown patent document 2, disclose in oil-filled transformer, make to be configured in coil and the coil in the configuration of coil periphery
The shape of the insulating element between fixture is using and both ends of the surface position than coil longer than coil direction of principal axis length to upper and lower
Prominent shape, therefore ensures that the technology of the beeline of creeping discharge.
Patent document 1：Japanese Unexamined Patent Publication 2000-252138
Patent document 2：Japanese Unexamined Patent Publication 2009-283686
The content of the invention
Invent technical task to be solved
Method disclosed in patent document 2 is by making the shape of insulating element longer than coil direction of principal axis length, thus coming
The method for guaranteeing coil and the insulating properties between the metal in the outside of coil.On the other hand, the mould shown in patent document 1
In transformer processed, therefore, to assure that the beeline of coil and the creeping discharge between the framework of the upper and lower side of coil.Institute
With, even if to the method disclosed in mold transformer application patent document 2, i.e., insulator is set using in coil periphery, and
The method for making the shape of the insulating element longer than coil direction of principal axis length, can not increase coil and be located at the upper and lower side of coil
Framework between creeping discharge beeline.
It is an object of the invention to provide a kind of method that appropriate insulating properties is guaranteed in mold transformer.
For solving the technological means of problem
The mold transformer of an embodiment of the invention adopt with tubular primary winding, with primary winding
Inner side is provided with secondary coil, upper frame and the lower frame of the tubular of the state configuration in the space of regulation, above-mentioned primary line
The structure that circle and secondary coil are supported by multiple supporting members.In above-mentioned primary winding and the upper and lower end parts and framework of secondary coil
Between be respectively arranged with multiple supporting members, it is by insulant block and with the area bigger than the floor space of the insulant block
Wide cut insulation board constitute.The end abutment of insulant block and primary winding and secondary coil, above-mentioned insulant block with it is above-mentioned
Wide cut insulation board is configured between framework.
Invention effect
In accordance with the invention it is possible to make the beeline of the creeping discharge of insulant block portion longer, mold transformer can
Improve by property.
Description of the drawings
Fig. 1 is the front elevation of the mold transformer of embodiment 1.
Fig. 2 is the side view of the mold transformer of embodiment 1.
Fig. 3 is the transformer coil sectional view of embodiment 1 and the sectional view for supporting its supporting member.
Fig. 4 is the stereogram of the supporting member of embodiment 1.
Fig. 5 is the sectional view of the supporting member of the transformer coil upper end for being located at embodiment 1.
Fig. 6 is the transformer coil sectional view of embodiment 2 and the sectional view for supporting its supporting member.
Fig. 7 is the stereogram of the supporting member of embodiment 2.
Fig. 8 is to represent for the supporting member of the variation of embodiment 2 to configure in the case of coil lower end, wide cut insulation
The figure of the shape of plate.
Fig. 9 is the transformer coil sectional view of embodiment 3 and the sectional view for supporting its supporting member.
Figure 10 is the stereogram of the supporting member of embodiment 3.
Figure 11 is configured with the sectional view of the situation of bolster below wide cut insulation board.
Figure 12 is the sectional view of the secondary coil of embodiment 4.
Figure 13 is the sectional view of the transformer coil of embodiment 5 and the sectional view for supporting its supporting member.
Figure 14 is the stereogram of the supporting member of embodiment 5.
Figure 15 is the structure chart of the supporting member of embodiment 5.
Figure 16 is the structure chart of the supporting member of embodiment 6.
Specific embodiment
Hereinafter, with reference to the accompanying drawings of the transformer of embodiments of the present invention.In addition, the present invention is not limited to following explanation
Embodiment.
Embodiment 1
Hereinafter, with description of the drawings first embodiment.Fig. 1 is the front elevation of the mold transformer 100 of embodiment 1, and Fig. 2 is this
The side view of mold transformer 100.
In the mold transformer 100 of embodiment 1, tubular, the primary winding 1 of such as drum and secondary coil 2 lead to
Cross multiple insulant blocks 5 and metalwork 7 is supported in metal framework 20.Wherein, framework 20 has positioned at mold transformer
The framework 20a of the 100 bottom and framework 20b positioned at the top of mold transformer 100.Framework 20a and frame are not being differentiated between below
In the case of frame 20b ground address, it is denoted as " framework 20 ".In addition, in this specification, by insulant block 5, metalwork 7 and framework 20
Referred to as supporting structure portion.
Fig. 3 indicates the coil (primary winding 1, secondary coil 2) in mold transformer 100 and positioned at the lower end of coil
Supporting structure portion section.In addition, Fig. 4 is the stereogram in the supporting structure portion.Primary winding 1, secondary coil 2 all use resin
3 have carried out mould-forming, coaxially configure in the radial direction.In addition, in Fig. 3, left side equivalent to cylinder center position, it is right
Peripheral direction of the side equivalent to cylinder.Primary winding 1, secondary coil 2 are all molded with resin 3 (referring to Fig. 3).In addition,
Secondary coil 2 primary winding 1 inner coaxial configure, spatial portion 11 is provided between primary winding 1, secondary coil 2
(referring to Fig. 3).And, arrange cored 13 in the inner side of secondary coil 2.In addition, in the mold transformer of embodiment 1, one
Secondary coil 1 is high-tension coil, and secondary coil 2 is low-voltage coil.
Insulant block 5 has in the above the first support 5a of supporting primary winding 1, supports the second of secondary coil 2
Support 5b.Insulant block 5 is made up of insulators such as glassy layer laminations.In addition, in primary winding 1, secondary coil 2 and insulant
Between block 5, the bolsters 4 such as silicon rubber (silicone rubber) are inserted.On the framework 20a of mold transformer 100, it is provided with multiple
For the metalwork 7 of fixed insulation thing block 5, insulant block 5 is configured on the metalwork 7 on the framework 20 of transformer.Separately
Outward, in order to prevent insulant block 5 from misplacing, insulant block 5 is fixed with metalwork 7 by position retaining pin 6.
In addition, Fig. 3 is primary winding 1, the bottom of secondary coil 2 for representing the mold transformer 100 positioned at embodiment 1
A supporting structure portion sectional view, and primary winding 1, the upper end of secondary coil 2 be also adopted by it is substantially symmetrical above and below with Fig. 3
Structure.Fig. 5 indicate the primary winding 1 of the mold transformer 100 positioned at embodiment 1, the upper end of secondary coil 2
The sectional view in bearing structure portion.In this case, insulant block 5 is used on the contrary up and down with the direction represented by Fig. 3.That is, with first
Support 5a is abutted with the upper end of primary winding 1, and the mode that the second support 5b is abutted with the upper end of secondary coil 2 is configured.Separately
Outward, the insulant block 5 positioned at primary winding 1, the upper end of secondary coil 2 is by bolt 15 and the metalwork 7, framework for being located at upside
20b connects.
Present inventor has performed with Fig. 3, Fig. 4 as the analysis of electric field of analysis system, learning and the corner of bolster 4 being applied with
Electric field.If (being provided as the rings such as the switchgear house that outside atmosphere is not directly entered under the usual configuration surroundings of mold transformer
Border), even the then structure of existing mold transformer, corrosion resistance also will not be reduced.But, mold transformer is arranged on into ash
In the case of under the more particular surroundings of dirt, moisture, salinity, electric field is because of dust, moisture, salinity for being attached in silicon rubber portion etc.
Impact and increase, the corrosion resistance of silastic surface is reduced because of shelf depreciation.Then, the electric discharge corrosion for occurring in silicon rubber
Gradually it is in progress to insulant block 5, reaches insulation breakdown.
Primary winding 1 is bigger with the distance between the metalwork 7 of transformer, and the time for reaching insulation breakdown is longer, so
Can be improved by increasing the height of insulant block 5, the beeline of increase creeping discharge.It is therefore preferable that to a certain degree
Ground guarantees the height of insulant block 5.As one, above from the bottom of insulant block 5 to the first support 5a (top surface)
Height be set to 10cm degree.
In the transformer of embodiment 1, primary winding 1 is high-tension coil, and secondary coil 2 is low-voltage coil.So, increase
The beeline of the creeping discharge between primary winding 1 and framework 20 (or metalwork 7) is more important.Therefore, the first supporting is made
The height of portion 5a is higher than the height of the second support 5b.
In addition, being provided with recess between the first support 5a and the second support 5b of insulant block 5.Thereby, it is possible to
The beeline of the creeping discharge between increase primary winding and the second coil.With regard to be positioned over dust, moisture, salinity etc. compared with
Mold transformer under many particular surroundings, it is important periodically to be cleaned, checked.In a part of mold transformer, adopt
The structure of dielectric film is separately configured with the spatial portion 11 in primary winding and secondary coil, but film has been configured in spatial portion 11
In the case of, it is difficult to carry out the state confirmation of secondary coil.By using the structure, easily verifying that by visual observation once
The maintainability of the state of the contact site 4b of the contact site 4a and secondary coil 2 and bolster 4 of coil 1 and bolster 4, cleaning etc.
Also can improve.
Embodiment 2
Then, for embodiments of the invention 2, illustrated with Fig. 6, Fig. 7.The structure of the mold transformer of embodiment 2
In, the aspect beyond the structure in supporting structure portion is the mold transformer identical structure with embodiment 1.Therefore, below, with
Supporting structure is illustrated centered on portion.Fig. 6 is the primary winding 1, secondary coil for representing the mold transformer positioned at embodiment 2
The sectional view in one supporting structure portion of 2 bottom.In the supporting structure portion of embodiment 2, illustrated knot in embodiment 1
On the basis of structure, it is configured with the face bigger than the floor space of insulant block portion 5 and metalwork 7 in the bottom of insulant block portion 5
Long-pending flat board is wide cut insulation board 8.In addition, similarly to Example 1, positioned at the supporting of primary winding 1, the upper end of secondary coil 2
Structural portion is also substantially symmetrically constituted with Fig. 6.But, wide cut insulation board 8 is not provided between insulant block 5 and metalwork 7.With
Under, illustrated centered on the supporting structure portion positioned at the bottom of coil.
It is with position retaining pin 6 ' that insulant block 5 and wide cut is exhausted in order to prevent insulant block 5 from misplacing with wide cut insulation board 8
Listrium 8 is fixed on metalwork 7.Wide cut insulation board 8 is for the creeping discharge between extension coil and metalwork 7 or framework 20
Beeline and arrange.So wide cut insulation board 8 is using at least compared with insulant block 5 and/or metalwork 7, width is (round
The length of circumferential direction) and the long insulation board of length (length of radial direction).
Wide cut insulation board 8 and insulant block 5 are not one, are other components, as long as so wide cut insulation board 8 is exhausted
Edge body can then use the part of various materials.Glassy layer lamination that for example can be used using insulant block portion 5 etc., on the contrary
The part with the unlike material of insulant block portion 5 can also be used.
By using the structure for inserting wide cut insulation board 8, extending the edge of 7 from coil to metalwork (or framework 20)
The beeline of surface-discharge.The beeline of 7 creeping discharge is longer from coil to metalwork, reach insulation breakdown when
Between it is longer.By configuring the wide cut insulation board 8 shown in Fig. 7, on the basis of the height dimension of insulant block 5, wide cut insulation board 8
Surface distance be also added to creeping discharge beeline (the interval L that the dotted line of Fig. 6 is represented be creeping discharge most
Short distance).Thus it is possible to extend to the time up to insulation breakdown.
In addition, can be by wide cut insulation board 8 and the detached structure of insulant block 5, it is possible to respectively more because employing
Change insulant block 5 and wide cut insulation board 8.In addition, the transformer that insulant block 5 is applied to all size is become into easy.Wide cut
In the case that insulation board 8 is integrally formed with insulant block 5, when configuring insulant block 5 in less transformer, wide cut is there is also
The possibility that insulation board 8 is interferenceed with other components.By the wide cut insulation board 8 for preparing various sizes, with the transformation to be configured
Size of device etc. correspondingly selects different size of wide cut insulation board 8, insulant block 5 can be commonly applied to into all size
Transformer, the manufacturing cost of insulant block 5 can be reduced.
[variation]
The variation in the supporting structure portion of the mold transformer of embodiment 2 is illustrated with Fig. 8.In embodiment 2, illustrate to use
Configuration example of the flat insulation board in surface as wide cut insulation board 8.But it is flat that the shape of wide cut insulation board 8 is not limited to surface
Insulation board.In variation, illustrate the end by inclined shape, i.e. wide cut insulation board 8 is provided with wide cut insulation board 8 with
Center portion compares the example that the wide cut insulation board 8 of the shape of reduction is applied to supporting structure portion.
One of the structure for being provided with inclined wide cut insulation board 8 ' is indicated in Fig. 8.Fig. 8 is to match somebody with somebody insulant block 5
Put at coil lower end, the situation of outer lateral central part observation insulant block 5, metalwork 7, wide cut insulation board 8 ' from transformer
Under structure chart.So, by the structure using the reduction compared with central portion of the outside of wide cut insulation board 8 ', it is prevented from water droplet
Etc. the surface for being trapped in wide cut insulation board 8 '.Additionally, the shape of wide cut insulation board 8 ' is not limited to the shape shown in Fig. 8.As long as
Be the structure of end reduction compared with central part, be attached to the structure that water droplet of upper surface etc. is difficult to be detained, then can be using each
Plant the insulation board of shape.The wide cut insulation board of trapezoidal shape can also for example be used.
In addition, in the case of using inclined structure is arranged in wide cut insulation board 8, the width configured in the bottom of coil inclines
Swash plate 8, as shown in figure 8, configuring in the way of the end of wide cut insulation board 8 ' becomes in the position of the reduction compared with central part.
Hypothesis makes wide cut insulation board 8 (below, will make wide cut insulation board 8 with insulation with the integrally formed situation of insulant block 5
The integrally formed part for obtaining of thing block 5 is referred to as " wide insulant block ") under, need to make exhausted for being configured in the width of bottom respectively
Edge thing block and the wide insulant block for being configured in upper end.As shown in figure 8, the wide insulant block for being configured in bottom
When being configured in bottom, become the structure of end reduction compared with central part of wide cut insulation board part.It is configured as former state and is existed
During upper end, in upper end, the end of wide cut insulation board part is upward, it is easy to accumulate water droplet etc., so not preferred.Cause
This, being configured in the wide insulant block of upper end needs using the structure different from the wide insulant block for being configured in bottom (for example
Using insulant block that there is no wide cut insulation board part etc.).
As embodiment 2 or this variation, if wide cut insulation board and insulant block are the part of difference, by
Upper end only configures insulant block, is not provided with wide cut insulation board, is prevented from the surface that water droplet etc. is trapped in insulant block 5.Cause
This, can use identical insulant block, without the need for making respectively for being configured in the exhausted of bottom in upper and lower end
Edge thing block and the insulant block for being configured in upper end.
In addition, be explained above being not provided with the structure of wide cut insulation board in upper end, but it is also possible to arrange wide in upper end
Width insulation board.In this case, make wide cut insulation board 8 ' be configured in the case of bottom identical towards arranging.
That is, arranged in the way of the structure of reduction compared with central portion by the outside for becoming wide cut insulation board 8 '.In such manner, it is possible to
The situation that bottom arranges wide cut insulation board 8 ' is same, prevents water droplet etc. to be trapped near the insulant block for being arranged on upper end.
Embodiment 3
Then, the third embodiment of the present invention is illustrated with Fig. 9, Figure 10.In the structure of the mold transformer of embodiment 3,
Aspect beyond the structure in bearing structure portion is the mold transformer identical structure with embodiment 1.Fig. 9 indicates embodiment 3
Mold transformer in, coil (primary winding 1, secondary coil 2) and supporting they supporting structure portion (insulant block 5, gold
Category part 7, framework 20) section.Figure 10 is the stereogram in supporting structure portion.
In the mold transformer of embodiment 1, bolster 4 is configured between coil and insulant block 5.On the other hand,
In the mold transformer of embodiment 3, using bolster 4 is configured in the lower section of insulant block 5, primary winding 1 and secondary is made
The structure that coil 2 is directly supported by insulant block 5.Aspect in addition is using the transformer identical structure with embodiment 1.
The resin 3 of silicon rubber that bolster 4 is used and mould-forming coil and the insulant being made up of glassy layer lamination etc.
Block 5 is compared, and relative dielectric constant is low, it is easy to cause insulation breakdown.Then, in the mold transformer of embodiment 3, by delaying
Stamping 4 is disposed substantially away from the position of coil, mitigates the concentration of electric field, making it difficult to cause insulation breakdown.
In addition, be based on be illustrated with the structure illustrated by Fig. 3, the structure i.e. without wide cut insulation board 8 above, but
Can be to the method for the structure Application Example 3 of the transformer of embodiment 2.Figure 11 indicates the configuration example.Figure 11 is by reality
The structure that example 2 is combined with embodiment 3 is applied, in 5 times configuration wide cut insulation boards 8 of insulant block of glassy layer lamination etc., and then
The bolster 4 of silicon rubber etc. is provided between wide cut insulation board 8 and metalwork 7.By using such structure, extending
The beeline of the creeping discharge between coil and metalwork 7, and the electric field concentration to bolster 4 can be relaxed.
Further, as other embodiment, it is also possible to arrange bolster 4 between insulant block 5 and wide cut insulation board 8.
Embodiment 4
Hereinafter, the fourth embodiment of the present invention is illustrated with Figure 12.
Figure 12 is the sectional view of the secondary coil 2 of the mold transformer of embodiment 4.The knot of the mold transformer of embodiment 4
In structure, in addition to being configured with the dielectric film this point being made up of insulating paper 9 and insulating tape 10 in the peripheral part of secondary coil 2,
It is identical with the mold transformer of embodiment 1,2 or 3.
Insulating paper 9 and insulating tape 10 are pasted by the peripheral part in secondary coil 2, it is possible to increase the stain resistance of transformer
And resistance to pressure.In addition, thus, insulating properties is improved, so space between primary winding 1 and secondary coil 2 can also be made (for example
Spatial portion 11 in Fig. 3) become narrower.In this case, the minor diameter of primary winding 1 can be made, it is possible to making transformer little
Type.
With regard to the use of the mold transformer under the more particular surroundings such as dust, moisture, salinity, maintenance is also important
's.Such as illustrated in embodiment 1, the method for configuring dielectric film with the spatial portion 11 of secondary coil 2 in primary winding 1 also can be carried
High insulating property, reduces the insulation distance between coil and realizes the miniaturization of transformer.But dust, moisture, salinity etc. compared with
It is also important to clean in the use of the mold transformer under many particular surroundings.If configuring insulant in spatial portion, it is difficult to
Coil cleaning is carried out again, by using this structure, can take into account the miniaturization of transformer and the raising of maintainability.
Embodiment 5
Then, the structure of the mold transformer of embodiment 5 is illustrated.Figure 13 is the transformer of the mold transformer of embodiment 5
Coil (primary winding 1, secondary coil 2) and support their supporting member sectional view.In addition, Figure 14 is propping up for embodiment 5
The stereogram of bearing member, Figure 15 is the structure chart of the supporting member of embodiment 5.
In the mold transformer of embodiment 2, as shown in fig. 6, being that wide cut insulation board 8 is configured in insulant block 5 and transformer
Between metalwork 7, it is ensured that the structure of beeline L of creeping discharge.On the other hand, in the mold transformer of embodiment 5, such as
Shown in Figure 13, realized along surface by the way that wide cut insulation board 8a and 8b are arranged respectively at into the upper and lower of insulant block 5
The further prolongation of the beeline of electric discharge.The aspect in addition of the mold transformer of embodiment 5 and embodiment 1～4
Mold transformer is identical.
Wherein, wide cut insulation board 8a and 8b is not by the structure of the direct formings such as machining on insulant block 5.Such as
Shown in Figure 15, in insulant block 5 groove for being embedded in wide cut insulation board 8a, 8b is shaped.Also, by being embedded in width in the cell
Width insulation board 8a, 8b, thus constitute the supporting member shown in Figure 14.
In insulant block 5 and the telescoping part of wide cut insulation board 8c, 8d, between producing between groove and wide cut insulation board 8a, 8b
In the case of gap, with silicon or insulative resin etc. joint filling is carried out.It is of course also possible to pass through to be machined into being configured to the embedding of precision
Size is closed, and causes not producing gap between the groove set by insulant block 5 and wide cut insulation board 8a, 8b.But, by with
Silicon or insulative resin etc. carry out joint filling, it is easier to prevent when there is creepage trace phenomenon by forming in insulant block 5
Slot part forms the situation of circuit.If the structure, then because of creepage trace etc. in insulant block 5, wide cut insulation board 8a, 8b
In define circuit in the case of, and can simply recover insulating properties by changing wide cut insulation board 8a, 8b.In addition, right
In insulant block 5, it is also possible to surface grinding, or coating coatings or varnish are carried out with file etc. by the circuit to being formed
Deng, and recover insulating properties.
Wherein, the example that 2 wide cut insulation boards are configured in insulant block 5 is illustrated in the present embodiment, but it is also possible to only 1
Place's configuration wide cut insulation board.For example can also only configure wide cut insulation board 8b.
Embodiment 6
Figure 16 is the structure chart of the supporting member of the mold transformer of embodiment 6.The structure of the mold transformer of embodiment 6
In, in addition to the aspect (structure of supporting member) of following explanation, tied with the mold transformer identical of embodiment 1～5
Structure.
In embodiment 5, illustrate for insulant block 5, wide cut insulation board 8a, 8b is embedded in from a direction, so as to prolong
The example of the beeline of long creeping discharge.In the mold transformer of embodiment 6, as shown in figure 16, for insulant block 5 will
Groove shapes in the circumferential one week.Then, wide cut insulation board 8c, 8d are inserted in the slot part of the shaping.Now, wide cut insulation
Plate 8c, 8d are configured in the way of clipping insulant block 5 by wide cut insulation board 8c and 8d.For insulant block 5 and wide cut insulation board
The telescoping part of 8c, 8d, similarly to Example 5, it is also possible to implement joint filling with silicon or insulative resin etc..
It is more than the explanation of embodiments of the invention.In addition, the present invention is not limited to above-described embodiment, including various modifications
Example.For example, in each embodiment described above, illustrate that coil is the example of columnar situation, but the shape of coil is not limited
Due to cylindrical shape.It for example can also be rectangular shape.Above-described embodiment be for ease of understanding illustrate the present invention and specifically
Bright, it is not limited to all structures that must possess explanation.
For example, in each embodiment described above, illustrate that coil is the example of columnar situation, but the shape of coil
Shape is not limited to cylindrical shape.It for example can also be rectangular shape.In addition, it is also possible to make first support and second of insulant block
Support is the component of difference.In addition, a part for the structure for each embodiment, it is also possible to add, delete, replacing other structures
Part.
Symbol description
1：Primary winding
2：Secondary coil
3：Resin
4：The bolsters such as silicon rubber
5：Insulant block
6：Position retaining pin
7：Transformer metalwork
8(8a、8b、8c、8d)：Wide cut insulation board
9：Insulating paper
10：Insulating tape
11：Spatial portion
13：Iron core
20：Framework
Claims (10)
1. a kind of mold transformer, it includes：Primary winding；To be provided with the state in the space of regulation on the inside of primary winding
The secondary coil of configuration；Framework；With the multiple supporting members for supporting the primary winding and secondary coil, it is characterised in that：
The supporting member is by insulant block and the wide cut insulation board structure with the area bigger than the floor space of the insulant block
Into being provided with multiple supporting members between the end and the framework of the primary winding and secondary coil；
In the upper surface of the insulant block, the first support and the supporting for being provided with the end for supporting the primary winding is described
Second support of the end of secondary coil, between the lower surface and the framework of the insulant block wide cut is configured with
Insulation board.
2. mold transformer as claimed in claim 1, it is characterised in that：
The insulant block, the wide cut insulation board and the metalwork installed in the framework are fixed using position retaining pin.
3. mold transformer as claimed in claim 1 or 2, it is characterised in that：
The insulant block has groove, and the wide cut insulation board is inserted in the cell.
4. the mold transformer as any one of claims 1 to 3, it is characterised in that：
The height of first support is higher than the height of second support.
5. the mold transformer as any one of Claims 1 to 4, it is characterised in that：
Recess is provided between first support and second support.
6. the mold transformer as any one of Claims 1 to 5, it is characterised in that：
Multiple supporting members are provided between the bottom and the framework of the primary winding and secondary coil；
The wide cut insulation board is provided with inclination；
The end of the wide cut insulation board arranged in the bottom of the primary winding and secondary coil is located at than the wide cut
The central part of insulation board position on the lower.
7. the mold transformer as any one of claim 1～6, it is characterised in that：
In the upper end of the primary winding and secondary coil and on the upper end of the primary winding and secondary coil
Framework between be provided with multiple supporting members,
The wide cut insulation board is provided with inclination,
The end of the wide cut insulation board arranged in the upper end of the primary winding and secondary coil is located at than the wide cut
The central part of insulation board position on the lower.
8. the mold transformer as any one of claim 1～7, it is characterised in that：
Bolster is configured between the end and the insulant block of the primary winding and secondary coil.
9. the mold transformer as any one of claim 1～8, it is characterised in that：
Bolster is configured between the insulant block and the framework.
10. the mold transformer as any one of claim 1～9, it is characterised in that：
Dielectric film is configured with the periphery of the secondary coil.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014155788 | 2014-07-31 | ||
| JP2014-155788 | 2014-07-31 | ||
| PCT/JP2015/069640 WO2016017381A1 (en) | 2014-07-31 | 2015-07-08 | Molded transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106663526A true CN106663526A (en) | 2017-05-10 |
| CN106663526B CN106663526B (en) | 2018-06-22 |
Family
ID=55217286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580038819.XA Expired - Fee Related CN106663526B (en) | 2014-07-31 | 2015-07-08 | Mold transformer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3176796B1 (en) |
| JP (1) | JP6335305B2 (en) |
| CN (1) | CN106663526B (en) |
| WO (1) | WO2016017381A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101706514B1 (en) | 2016-10-20 | 2017-02-13 | 엘에스산전 주식회사 | Cast resin transformer |
| KR200484481Y1 (en) * | 2017-03-28 | 2017-09-08 | 엘에스산전 주식회사 | Coil spacer structure for molding transformer |
| ES2845207T3 (en) * | 2017-05-31 | 2021-07-26 | Abb Power Grids Switzerland Ag | Isolation transformers |
| JP7029920B2 (en) * | 2017-10-06 | 2022-03-04 | 株式会社日立産機システム | Transformer |
| EP3629349B1 (en) * | 2018-09-25 | 2021-04-14 | ABB Power Grids Switzerland AG | Medium frequency transfomer |
| EP3817015A1 (en) * | 2019-10-31 | 2021-05-05 | ABB Power Grids Switzerland AG | Transformer coil block design for seismic application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5470014U (en) * | 1977-10-28 | 1979-05-18 | ||
| JPS6015304Y2 (en) * | 1980-03-31 | 1985-05-14 | 株式会社東芝 | molded transformer |
| JPH0585025U (en) * | 1992-04-21 | 1993-11-16 | 東陶機器株式会社 | Coil bobbin for small high voltage transformer |
| JPH0717129Y2 (en) * | 1987-05-19 | 1995-04-19 | 富士電機株式会社 | Resin mold winding |
| CN202084402U (en) * | 2011-05-09 | 2011-12-21 | 山东临清益和变压器有限公司 | Insulating padding block for dry type transformer |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD53189A1 (en) * | 1966-04-19 | 1967-01-05 | Flush support for windings of transformers and chokes | |
| JPS60192422U (en) * | 1984-05-31 | 1985-12-20 | 愛知電機株式会社 | Anti-vibration coil holding device for molded transformer |
| JPS6151811A (en) * | 1984-08-22 | 1986-03-14 | Hitachi Ltd | Resin mold coil |
| EP0265612A1 (en) * | 1986-08-29 | 1988-05-04 | Siemens Aktiengesellschaft | Air-cooled transformer |
| JPH10106852A (en) * | 1996-09-27 | 1998-04-24 | Toshiba Corp | Molded insulator and electrical equipment using it |
| DE20210882U1 (en) * | 2002-07-12 | 2002-10-10 | Siemens Ag | Support device for supporting at least one winding |
| KR101090142B1 (en) * | 2009-09-21 | 2011-12-06 | 성진종합전기 주식회사 | Spacer of transformer, and buffer structure using thereof |
-
2015
- 2015-07-08 EP EP15828039.6A patent/EP3176796B1/en active Active
- 2015-07-08 WO PCT/JP2015/069640 patent/WO2016017381A1/en active Application Filing
- 2015-07-08 CN CN201580038819.XA patent/CN106663526B/en not_active Expired - Fee Related
- 2015-07-08 JP JP2016538243A patent/JP6335305B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5470014U (en) * | 1977-10-28 | 1979-05-18 | ||
| JPS6015304Y2 (en) * | 1980-03-31 | 1985-05-14 | 株式会社東芝 | molded transformer |
| JPH0717129Y2 (en) * | 1987-05-19 | 1995-04-19 | 富士電機株式会社 | Resin mold winding |
| JPH0585025U (en) * | 1992-04-21 | 1993-11-16 | 東陶機器株式会社 | Coil bobbin for small high voltage transformer |
| CN202084402U (en) * | 2011-05-09 | 2011-12-21 | 山东临清益和变压器有限公司 | Insulating padding block for dry type transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016017381A1 (en) | 2016-02-04 |
| EP3176796A4 (en) | 2018-04-11 |
| JP6335305B2 (en) | 2018-05-30 |
| EP3176796B1 (en) | 2020-10-21 |
| EP3176796A1 (en) | 2017-06-07 |
| JPWO2016017381A1 (en) | 2017-04-27 |
| CN106663526B (en) | 2018-06-22 |
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