CN207529751U - A kind of outdoor dry type transformer - Google Patents
A kind of outdoor dry type transformer Download PDFInfo
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- CN207529751U CN207529751U CN201720820274.4U CN201720820274U CN207529751U CN 207529751 U CN207529751 U CN 207529751U CN 201720820274 U CN201720820274 U CN 201720820274U CN 207529751 U CN207529751 U CN 207529751U
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Abstract
The utility model discloses a kind of outdoor dry type transformers, it includes high-tension coil, low-voltage coil, iron core, with resin-cast between coil and iron core is formed the spaced walls full of clearance space between high-voltage coil and low-voltage coil, formed with resin-cast and coat high-voltage coil and low-voltage coil and the outer wall of iron core, three groups of coils are connected as a single entity by the outer wall, and the iron core is three dimensional wound core of remaining silent.Between high-voltage coil and low-voltage coil, the solid insulation of all resins of insulation between low pressure and iron core, since the dielectric constant of resin is far longer than the dielectric constant of air, insulation distance can be substantially reduced because drawing, spacing i.e. between high-voltage coil and low-voltage coil can reduce, so as to reduce the appearance and size of transformer coil；High-voltage coil and low-voltage coil is poured into a mould together with iron core, can be prevented the deformation of coil, be increased the anti-short circuit capability of transformer, can resist the influence that extraneous wind is exposed to the sun and rain, can resist adverse circumstances, can be used as outdoor transformer use.
Description
Technical field
The utility model is related to a kind of transformer more particularly to a kind of outdoor dry type transformers.
Background technology
At present there are two types of the transformers of outdoor, plane laminated core structure outdoor dry type transformer（This structure three-phase magnetic
Road is uneven, and noise is big, and no-load loss is big）, oil-immersed transformer（Oil is filled in transformer, oil is not only flammable, but also not ring
It protects）.Since outdoor climatic environment is changeable, exposing to the weather, it is bigger to the interference of outdoor equipment to drench with rain, and is presently used in outdoor change
Depressor is mostly oil-immersed transformer（Oil becomes）, higher three-dimensional wound core dry type transformer is required environmental condition（It is dry to become）
Generally it is only used in interior.In order to stablize dry structure changes, occur high-voltage coil and low-voltage coil and iron core being integrated by resin-cast
Dry change, local caburizing links between coil and iron core between high-voltage coil and low-voltage coil, rest part slot milling as air flue,
And with enough spacing（Chimney width）So that air flue have enough surface areas convenient for heat dissipation, therefore high-voltage coil and low-voltage coil it
Between clearance space between coil and iron core must reserve and absolutely cannot be solid.In order to which airway pressure radiates, interval location
Cast connection body thickness it is also bigger, its physical property is poor after molding, it is difficult to resist outdoor adverse circumstances, easy aging
Strain cracking, so as to which this structure is not used to outdoor transformer.
Invention content
In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide one kind can fight outdoor environment
Outdoor dry type transformer.
In order to solve the above-mentioned technical problem, technical solution is used by the utility model：A kind of outdoor dry type transformer,
It includes high-tension coil, low-voltage coil, iron core, is formed and filled between coil and iron core between high-voltage coil and low-voltage coil with resin-cast
The spaced walls of full clearance space are formed with resin-cast and coat high-voltage coil and low-voltage coil and the outer wall of iron core, and the outer wall is by three groups
Coil is connected as a single entity, and the iron core is three dimensional wound core of remaining silent.
A kind of improvement of technical solution as the utility model outdoor dry type transformer, the inside between each coil are drawn
Line and terminal are set within outer wall and are integrated with high-voltage coil and low-voltage coil cast connection.
A kind of improvement of technical solution as the utility model outdoor dry type transformer, the corresponding outer wall of high-voltage coil and low-voltage coil
Except cover one layer of sulphurated siliastic, directly coat iron core outer wall except coat silicate paint.
A kind of improvement of technical solution as the utility model outdoor dry type transformer, the spaced walls and outer wall are primary
Cast is integrally formed.
A kind of improvement of technical solution as the utility model outdoor dry type transformer, the spaced walls and outer wall are interior
The pour mass of chamber vacuum-assist pouring positive pressure compacting.
A kind of improvement of technical solution as the utility model outdoor dry type transformer, the folder set on iron core side are
Bending metal component.
The beneficial effects of the utility model are：Three dimensional wound core remain silent since seam, and three-phase magnetic circuit is not present in iron core
Full symmetric, therefore, no-load current, no-load loss and noise substantially reduce.Between high-voltage coil and low-voltage coil, between low pressure and iron core
Insulate the solid insulations of all resins, can be significantly because drawing since the dielectric constant of resin is far longer than the dielectric constant of air
Insulation distance is reduced, i.e., gap/spacing between high-voltage coil and low-voltage coil can reduce, so as to reduce the shape ruler of transformer coil
It is very little；Meanwhile small spacing causes the spaced walls forming process for being located at the clearance space inside equipment to deform small, stable structure.Just
Crimping circle is poured into a mould together with iron core, and the structure of integrated immobilization can prevent the deformation of coil, greatly increase transformer
Anti-short circuit capability.Therefore, the dry-type transformer poured into a mould entirely forms peripheral Totally-enclosed protective sheath body, can avoid inside transformer with
Outside climatic environment contacts, and not exposed to the sun and rain by extraneous wind is influenced, and can resist adverse circumstances, can be used as outdoor transformer makes
With.
Description of the drawings
Fig. 1 is a kind of overlooking the structure diagram of outdoor dry type transformer of the utility model.
Fig. 2 is the plan cross-section structure diagram of transformer shown in Fig. 1.
Fig. 3 is the forward structure schematic diagram of transformer shown in Fig. 1.
Specific embodiment
Further illustrate specific embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Fig. 1 ~ Fig. 3, a kind of outdoor dry type transformer of the utility model, including high-tension coil 11, low-voltage coil
12nd, iron core 13, with resin-cast between high-voltage coil and low-voltage coil between coil and iron core 13 formed full of clearance space interval
Wall 15 is formed with resin-cast and coats high-voltage coil and low-voltage coil and three groups of coils are linked as one by the outer wall of iron core 16, the outer wall 16
Body, the iron core 13 are three dimensional wound core of remaining silent.Three dimensional wound core remain silent since iron core 13 is there is no seam, and three-phase magnetic circuit is complete
Holohedral symmetry, therefore, no-load current, no-load loss and noise substantially reduce.It is exhausted between low pressure and iron core between high-voltage coil and low-voltage coil
The solid insulation of all resins of edge since the dielectric constant of resin is far longer than the dielectric constant of air, can subtract significantly because drawing
Small insulation distance, i.e., gap/spacing between high-voltage coil and low-voltage coil can reduce, and the spacing of coil and iron core can also reduce, from
And reduce the appearance and size of transformer coil；Meanwhile small spacing causes the spaced walls molding for being located at the clearance space inside equipment
Process deforms small, stable structure.High-voltage coil and low-voltage coil 11/12 is poured into a mould together with iron core 13, and the structure of integrated immobilization can prevent
The deformation of coil greatly increases the anti-short circuit capability of transformer.Therefore, the dry-type transformer poured into a mould entirely forms peripheral full envelope
Enclosed protects sheath body, inside transformer can be avoided to be contacted with outside climatic environment, not exposed to the sun and rain by extraneous wind is influenced, energy
Adverse circumstances are resisted, can be used as outdoor transformer use.Pole mounting means may be used after transformer miniaturization, saving accounts for
Ground area so that transformer reduces line loss closer to loading, energy saving.
More preferably, the inner lead between each coil and terminal be set within outer wall 16 and with high-voltage coil and low-voltage coil 11/
12 cast connections are integrated.Transformer is in addition to inlet-outlet line（Three high voltage input terminals, 21, four low-voltage outputs 22 and tap
Terminal 23）Outside, remaining lead is all cast in coil inside, prevented transformer due to lead-out wire insulation damages and caused by change
Depressor short circuit；Directly inlet-outlet line and wire connection terminal are cast in coil integral structure, i.e., in the outer wall 16 of moulding by casting, do not deposited
In casing and case along noxious materials such as fluid sealants, do not need to that zinc-plated conducting rod may be not present so that transformer is more energy-saving and environmentally friendly.
More preferably, one layer of sulphurated siliastic is covered except 11/12 corresponding outer wall 16 of high-voltage coil and low-voltage coil, directly coats iron core
Silicate paint is coated except 13 outer wall, the ability that transformer resists adverse circumstances is further improved, exposes to the weather in the external world and drench with rain
In the case of can also maintain long service life.
More preferably, the spaced walls 15 and 16 once-cast of outer wall are integrally formed, and are made its structure-integrated and are more tied
It is real to stablize, the ability of confrontation external environment variation is improved, can bear to expand with heat and contract with cold caused by the temperature difference.
More preferably, the spaced walls 15 and the pour mass that outer wall 16 is the compacting of inner cavity vacuum-assist pouring positive pressure, i.e., in cast
Chamber is poured into a mould in the case of vacuumizing, and the pouring type of this pressure difference perfusion causes casting process quickly without dead angle, for height
Low-voltage coil 11/12 is filled comprehensively smaller gap, subsequently apply positive pressure again so that pour mass more compact it is close
Avoid the occurrence of flaw micropore in fact so that outer wall 16 has the protective effect for the sealed air-tight that compacts, and with preferable structure
Intensity further promotes open air and resists the ability exposed to the weather and drenched with rain, this money three-dimensional wound core dry type transformer is enable to be applicable in
In outdoor installation.
More preferably, it is bending metal component set on the folder 18 of 13 side of iron core.Due to high-voltage coil and low-voltage coil 11/12 and iron core
Together, folder 18 functions only as lifting effect, therefore folder 18 is directly formed using stainless steel plate bending, is not required to weld for 13 cast
Connect, processes, the process such as pickling it is simple for process and environmentally friendly.Fuel tank, folder may be not present in addition, transformer is dry-type transformer
The welding of part is only formed by resin-cast, has the advantages that energy conservation and environmental protection；Transformer insulation oil and gas tank gage is not present in transformer
The combustibles such as face paint, reduce fire risk.
It is integrally formed in addition, the spaced walls 15 and outer wall 16 can also be second pourings, after the curing of once-cast body again
Second pouring is carried out, process of setting is avoided to shrink deformation and causes internal stress, makes device structure more more stable and stronger, deformation is small,
Internal stress is small, and service life is long.Wherein, it the spaced walls 15 and 16 priority moulding by casting of outer wall and is separated from each other, avoids being spaced
Wall 15 pulls each other after being molded with outer wall 16 leads to structural instability.Spill insulation dry powder or resin particle.Further, the interval
Partition band is provided between wall 15 and outer wall 16, which can be film or be spilled into cast when pouring into a mould interval twice
Insulation dry powder or resin particle or dry powder potting resin particle between body（Inside filling dry powder increases its gravity peripheral wall as resin
Particulate matter）.Alternatively, 15 stage casing of spaced walls disconnect and in incision position be equipped with seperation film or insulation dry powder or resin particle or
Dry powder potting resin particle.
Above disclosed is only the preferred embodiment of the utility model, certainly cannot be new to limit this practicality with this
The interest field of type, therefore the equivalent variations made according to present utility model application the scope of the claims still belong to the utility model and are covered
Range.
Claims (8)
1. a kind of outdoor dry type transformer, it is characterised in that：Including high-tension coil, low-voltage coil, iron core, with resin-cast in height
The spaced walls full of clearance space are formed between coil and iron core between low-voltage coil, are formed with resin-cast and coat height
Three groups of coils are connected as a single entity by the outer wall of crimping circle and iron core, the outer wall, and the iron core is three dimensional wound core of remaining silent.
2. outdoor dry type transformer according to claim 1, it is characterised in that：Inner lead and end between each coil
Son is set within outer wall and is integrated with high-voltage coil and low-voltage coil cast connection.
3. outdoor dry type transformer according to claim 1, it is characterised in that：The corresponding outer wall of high-voltage coil and low-voltage coil is overcoating
One layer of sulphurated siliastic of lid directly coats and coats silicate paint except the outer wall of iron core.
4. outdoor dry type transformer according to claim 1, it is characterised in that：The spaced walls and outer wall once-cast one
It is body formed.
5. the outdoor dry type transformer according to claim 1 or 4, it is characterised in that：The spaced walls and outer wall are inner cavity
The pour mass of vacuum-assist pouring positive pressure compacting.
6. outdoor dry type transformer according to claim 1, it is characterised in that：Folder set on iron core side is bending gold
Metal elements.
7. outdoor dry type transformer according to claim 1, it is characterised in that：The iron core coats flexible interlayer, institute
Elastic interlayer is stated between iron core and spaced walls between iron core and outer wall.
8. outdoor dry type transformer according to claim 7, it is characterised in that：The elasticity interlayer for rubber or silica gel or
TPE。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720820274.4U CN207529751U (en) | 2017-07-07 | 2017-07-07 | A kind of outdoor dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720820274.4U CN207529751U (en) | 2017-07-07 | 2017-07-07 | A kind of outdoor dry type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207529751U true CN207529751U (en) | 2018-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720820274.4U Active CN207529751U (en) | 2017-07-07 | 2017-07-07 | A kind of outdoor dry type transformer |
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| Country | Link |
|---|---|
| CN (1) | CN207529751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331493A (en) * | 2017-07-07 | 2017-11-07 | 广州飞天电气科技有限公司 | A kind of outdoor dry type transformer |
-
2017
- 2017-07-07 CN CN201720820274.4U patent/CN207529751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331493A (en) * | 2017-07-07 | 2017-11-07 | 广州飞天电气科技有限公司 | A kind of outdoor dry type transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180823 Address after: 510530 No. 15, Yun Pu Road, Yun Po Industrial Zone, Whampoa District, Guangzhou, Guangdong. Patentee after: Guangzhou Guanggao High Voltage Electric Apparatus Co., Ltd. Address before: 510530 No. 15, Yun Pu Road, Yun Po Industrial Zone, Whampoa District, Guangzhou, Guangdong. Patentee before: Guangzhou Feitian Electric Technology Co., Ltd. |
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| TR01 | Transfer of patent right |