CN206471202U - A kind of iron core for extending transformer service life - Google Patents
A kind of iron core for extending transformer service life Download PDFInfo
- Publication number
- CN206471202U CN206471202U CN201720200949.5U CN201720200949U CN206471202U CN 206471202 U CN206471202 U CN 206471202U CN 201720200949 U CN201720200949 U CN 201720200949U CN 206471202 U CN206471202 U CN 206471202U
- Authority
- CN
- China
- Prior art keywords
- iron core
- interior
- service life
- oil guide
- guide groove
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of iron core for extending transformer service life, including an outer iron core and two interior iron cores, the outer iron core is round rectangle, the iron yoke portion of interior iron core is circular arc, the iron yoke portion of the interior iron core sets oil guide groove at the top of circular arc, and outer iron core sets oil guide groove at two top fillets.Core structure described in the utility model, open circuit loss is low, and no-load current is small, and the heat of generation is small.Round iron core saves the unnecessary part in corner, and interior iron core uses circular arc, iron core weight saving, material cost reduction, and small volume no-load current is small, and temperature rise is small.The thickness ultrathin of silicon steel sheet, reduces the heat that eddy-current loss and vortex are produced.Oil groove is convinced on interior iron core upper yoke top, which by patient analysis, can enable the oily stream of infiltration iron core smoothly be flowed out by oil guide groove, and outer iron core oil guide groove, which is opened at fillet, can ensure that oil circuit is smooth, it is to avoid region of bypassed oil, be conducive to iron core to radiate, and improve transformer safety coefficient.
Description
Technical field
The utility model is related to transformer technology field, more particularly, to a kind of transformer service life of extending
Iron core.
Background technology
Power attenuation in iron core is " iron loss ", and iron loss is caused by two reasons, and one is " magnetic hystersis loss ", and one is "
Eddy-current loss ".Magnetic hystersis loss be iron core in magnetic history, due to the iron loss that there is hysteresis and produce, this loss
The size that size is surrounded to the hysteresis curve of material is directly proportional.When transformer works, there is alternating current in coil, it is produced
Raw magnetic flux certainly alternation.The magnetic flux of this change produces induced-current in the core.The induced-current produced in iron core,
Circulation in the plane perpendicular to flow direction, so being vortex, eddy-current loss equally makes iron core generate heat.
Existing appendiron core transformer, because iron core has region of bypassed oil (oil circuit is obstructed) in its structure and radiated bad
Problem, iron core temperature is too high when also easily causing transformer station high-voltage side bus, causes Transformer Insulation Aging or can not to expire transformer negative
, there is very big hidden danger to the safe operation of transformer in the problems such as lotus runs.
Utility model content
The purpose of this utility model is to provide a kind of transformer core, can reduce loss, it is to avoid caused by temperature is too high
The problems such as transformer aging, extend transformer service life, it is ensured that transformer safety is run.
To achieve these goals, the utility model provides a kind of iron core for extending transformer service life, including one
Individual outer iron core and two interior iron cores, two interior iron cores are listed in the mesopore of outer iron core and stem fits together two-by-two, described
Outer iron core is round rectangle, and the iron yoke portion of interior iron core is circular arc, and the iron yoke portion of the interior iron core sets Oil Guide at the top of circular arc
Groove, outer iron core sets oil guide groove at two top fillets.
Outer iron core described in the utility model and interior iron core are formed by cold rolling roll of some silicon steel sheets.
Silicon steel sheet quantity used in outer iron core described in the utility model and two interior iron cores is equal, and silicon steel sheet quantity is respectively
60-100 pieces.
Silicon steel sheet thickness described in the utility model is 0.2mm-0.25mm.
Oil Guide well width described in the utility model is 3mm-8mm.
Compared with prior art, the beneficial effects of the utility model are：Iron core described in the utility model uses three-phase three
Pole structure, three-phase magnetic circuit symmetric equal-length, magnetic flux distribution is uniform, and magnetic resistance is greatly reduced, it is possible to decrease loss；This structure seamless institute
Low with open circuit loss, no-load current is small, and noise is small, and the heat of generation is small.Round iron core saves the unnecessary part in corner, interior iron
Core uses circular arc, iron core weight saving, material cost reduction, and small volume no-load current is small, and temperature rise is small.The thickness of silicon steel sheet
It is ultra-thin, reduce the heat that eddy-current loss and vortex are produced.Oil groove is convinced on interior iron core upper yoke top, which by patient analysis, can make the oil of infiltration iron core
Stream can smoothly be flowed out by oil guide groove, and outer iron core oil guide groove, which is opened at the fillet of top, can ensure that oil circuit is smooth, it is to avoid region of bypassed oil,
Be conducive to iron core to radiate, improve transformer safety coefficient.
Brief description of the drawings
Fig. 1 is the structural representation for the iron core that the utility model can extend transformer service life.
In figure：Iron core in 1- outer iron cores, 2-, 3- stems, 4- iron yokes portion, 5- oil guide grooves.
Embodiment
Preferred embodiment of the present utility model is more fully described below with reference to accompanying drawings.
The iron core for extending transformer service life as described in Figure 1, including an outer iron core 1 and two interior iron cores 2, two
Individual interior iron core 2 is listed in the mesopore of outer iron core 1 and stem 3 fits together two-by-two, and the outer iron core 1 is round rectangle, interior
The iron yoke portion 4 of iron core 2 is circular arc, and the iron yoke portion 4 of the interior iron core 2 sets oil guide groove 5 at the top of circular arc, and outer iron core 1 is two
Oil guide groove 5 is set at individual top fillet.
Outer iron core 1 described in the present embodiment and interior iron core 2 are formed by cold rolling roll of multi-disc silicon steel sheet, outer iron core 1 and each
Silicon steel sheet quantity used in interior iron core 2 is equal, and quantity is 90, and the silicon steel sheet thickness is 0.2mm-0.25mm, the Oil Guide
The width of groove 5 is 5mm.
Claims (6)
1. a kind of iron core for extending transformer service life, including an outer iron core (1) and two interior iron cores (2), in two
Iron core (2) is listed in the mesopore of outer iron core (1) and stem (3) fits together two-by-two, it is characterised in that the outer iron core
(1) it is round rectangle, the iron yoke portion (4) of interior iron core (2) is circular arc, and the iron yoke portion (4) of the interior iron core (2) is at the top of circular arc
Oil guide groove (5) is set, and outer iron core (1) sets oil guide groove (5) at two top fillets.
2. the iron core according to claim 1 for extending transformer service life, it is characterised in that the outer iron core (1) and
Interior iron core (2) forms by cold rolling roll of some silicon steel sheets.
3. the iron core according to claim 1 for extending transformer service life, it is characterised in that the outer iron core (1) and
Silicon steel sheet quantity used in two interior iron cores (2) is equal.
4. the iron core according to claim 3 for extending transformer service life, it is characterised in that the outer iron core (1) and
Silicon steel sheet quantity used in two interior iron cores (2) is respectively 60-100 pieces.
5. the iron core for extending transformer service life according to claim 2,3 or 4, it is characterised in that the silicon steel sheet
Thickness is 0.2mm-0.25mm.
6. the iron core according to claim 1 for extending transformer service life, it is characterised in that the Oil Guide well width
For 3mm-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200949.5U CN206471202U (en) | 2017-02-24 | 2017-02-24 | A kind of iron core for extending transformer service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720200949.5U CN206471202U (en) | 2017-02-24 | 2017-02-24 | A kind of iron core for extending transformer service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471202U true CN206471202U (en) | 2017-09-05 |
Family
ID=59713233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720200949.5U Expired - Fee Related CN206471202U (en) | 2017-02-24 | 2017-02-24 | A kind of iron core for extending transformer service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128518A (en) * | 2019-12-10 | 2020-05-08 | 南昌顺景科技有限公司 | Voltage unit iron core of combined transformer |
-
2017
- 2017-02-24 CN CN201720200949.5U patent/CN206471202U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128518A (en) * | 2019-12-10 | 2020-05-08 | 南昌顺景科技有限公司 | Voltage unit iron core of combined transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20200224 |