CN203941790U - A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core - Google Patents
A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core Download PDFInfo
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- CN203941790U CN203941790U CN201420370217.7U CN201420370217U CN203941790U CN 203941790 U CN203941790 U CN 203941790U CN 201420370217 U CN201420370217 U CN 201420370217U CN 203941790 U CN203941790 U CN 203941790U
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Abstract
The utility model provides a kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core, comprise iron core, and be arranged on iron core inside and outside low-voltage coil and high-tension coil, it is characterized in that: described iron core adopts three-phase five-limb structure, every group of iron core is made up of two little iron core frames and two large iron core frames, each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, and making iron core transverse cross section is two rectangles to spelling structure, and the docking port of silicon steel sheet is all arranged on the centre of iron core frame bottom; Described high-tension coil and low-voltage coil are set in three iron core column of three-phase five-limb iron core, and are arranged on above folder coil is played to the effect that compresses and support by nail pressing and cushion block.
Description
Technical field
The utility model relates to dry-type transformer apparatus field, and particularly relating to a kind of core structure is the dry-type transformer that open coil iron core, no-load loss and load loss are very low, and this type of dry-type transformer is specially adapted to the user that energy-conservation and noise are had relatively high expectations.
Background technology
Known, dry-type transformer is mainly used in the distribution places such as power plant electricity consumption, electric substation's electricity consumption and skyscraper, commercial center, subterranean railway, these places are mostly all within the scope of resident's daily life, and it is particularly important that the capability and performance of transformer seems, wherein the noise performance particular importance that seems; Most of dry-type transformer models on market are SCB10, and these dry-type transformers in use no-load loss, no-load current and load loss are all very large, make user's operating cost higher, also cause the waste of State Grid's resource simultaneously.The conventional iron core of these dry-type transformers is generally mitre EI type laminated type structure in addition, but because the iron core of stack moulding all exists many places mitre in junction, every layer of limit, thereby cause the increase of magnetic resistance and iron loss, the exciting current of transformer is also increased, reduce power factor, had a strong impact on the power supply quality of electrical network, the existence of iron core seam has also caused the problem that running noises is large.
Summary of the invention
In order to overcome the deficiency in background technology, the utility model discloses a kind of energy-efficient, low noise, high-quality novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core.
For achieving the above object, the utility model adopts following technical scheme:
A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core, comprise iron core, and be arranged on iron core inside and outside low-voltage coil and high-tension coil, described iron core adopts three-phase five-limb structure, every group of iron core is made up of two little iron core frames and two large iron core frames, each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, and making iron core transverse cross section is two rectangles to spelling structure, and the docking port of silicon steel sheet is all arranged on the centre of iron core frame bottom; Described high-tension coil and low-voltage coil are set in three iron core column of three-phase five-limb iron core, and are arranged on above folder coil is played to the effect that compresses and support by nail pressing and cushion block.
Described low-voltage coil middle part is provided with honeycomb fashion air flue around low-voltage coil, and low-voltage coil is the rectangular configuration of seamed edge band fillet.
Three leading-out terminals of described high-tension coil connect with delta connection by connecting rod, and the terminals of described connecting rod are connected with high-voltage strut by wire.
Three outlet terminals of described low-voltage coil are by low pressure shore supports, and three outlet terminals of low-voltage coil connect with star connection by low pressure neutral point copper bar.
Described iron core is fixed on above base by folder.
Described iron core adopts high magnetic conduction low-loss 23ZH75 type silicon steel sheet to be prepared from.
Described low-voltage coil and high-tension coil all adopt high-quality Copper Foil or copper wire winding.
Owing to having adopted technique scheme, the utlity model has following beneficial effect:
Novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core of the present utility model has following effect:
1, no-load loss is very low, and no-load current is smaller.Because the iron core of the utility model transformer adopts three-phase five-limb structure, every group of iron core is made up of two little iron core frames and two large iron core frames, each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, making iron core transverse cross section is that two rectangles are to spelling structure, and the docking port of silicon steel sheet is all in the centre of iron core frame bottom, the magnetic circuit of transformer is distributed symmetrically, and magnetic hysteresis loss reduces, and iron core vibration amplitude reduces.Coordinate again upper this serial transformer to adopt high magnetic conduction low-loss 23ZH75 type silicon steel sheet, make no-load loss very low, than GB/T10228-2008 standard null load-loss on average reduce by 35%, no-load current on average reduces by 40%.It is pioneering that transformer of the present utility model belongs at home, in domestically leading status.
2, load loss is lower.Because the high and low pressure coil of the utility model transformer adopts high-quality Copper Foil and copper wire winding, value current density is less, makes load loss on average reduce by 25% than GB/T10228-2008 standard termination loss.
3, noise is low.Transformer noise of the present utility model, than the common low 10～15dB of SCB10 series dry-type transformer, can go deep into resident load central area.
4, the life-span is long.Transformer life of the present utility model is greater than 40 years.
5, energy-efficient, operating cost is low.The advantage of transformer of the present utility model aspect no-load loss and load loss is especially outstanding, so the in the situation that of normal load running, operating cost reduces greatly.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is B-B sectional view in Fig. 1.
Fig. 4 is the utility model iron core figure.
Fig. 5 is nail pressing assembling schematic diagram of the present utility model.
In figure: high-tension coil 1, low-voltage coil 2, iron core 3, folder 4, nail pressing 5, cushion block 6, high-voltage strut 7, low pressure pillar 8, connecting rod 9, low pressure neutral point copper bar 10, base 11, honeycomb fashion small airway 12.
Embodiment
Can explain in more detail the utility model by the following examples, the utility model is not limited to the following examples, and open the purpose of this utility model is intended to protect all changes and improvements within the scope of the utility model;
As Figure 1-5, novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core of the present utility model, comprise iron core 3, and be arranged on iron core 3 inside and outside low-voltage coil 2 and high-tension coil 1, described iron core 3 adopts three-phase five-limb structure, and every group of iron core is made up of two little iron core frames and two large iron core frames, and each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, making iron core transverse cross section is two rectangles to spelling structure, and the docking port of silicon steel sheet is all arranged on the centre of iron core frame bottom; Described high-tension coil 1 and low-voltage coil 2 are set in three iron core column of three-phase five-limb iron core, and are arranged on by nail pressing 5 and cushion block 6 effect that folder 4 plays compression and supports coil above.
Described low-voltage coil 2 middle parts are provided with honeycomb fashion air flue 12 around low-voltage coil, and low-voltage coil is the rectangular configuration of seamed edge band fillet.
Three leading-out terminals of described high-tension coil 1 connect with delta connection by connecting rod 9, and the terminals of described connecting rod are connected with high-voltage strut 7 by wire.
Three outlet terminals of described low-voltage coil 2 support by low pressure pillar 8, and three outlet terminals of low-voltage coil connect with star connection by low pressure neutral point copper bar 10.
Described iron core 3 is fixed on above base 11 by folder 4.
Described iron core 3 adopts high magnetic conduction low-loss 23ZH75 type silicon steel sheet to be prepared from.
Described low-voltage coil 2 and high-tension coil 1 all adopt high-quality Copper Foil or copper wire winding.
More specifically: by reference to the accompanying drawings described in 1,3 and 4, this novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core iron core adopts three-phase five-limb structure, every group of iron core is made up of two little iron core frames and two large iron core frames, each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, and the docking port of silicon steel sheet is all in the centre of iron core frame bottom, the magnetic circuit of transformer is distributed symmetrically, and magnetic hysteresis loss reduces.Coordinate upper this serial transformer to adopt the high magnetic conduction low-loss of high-quality cold-rolled orientation 23ZH75 type silicon steel sheet, design magnetic flux density is generally at 1.25～1.32T again, and specific loss is low, and B800 value is high, makes no-load loss very low.
By reference to the accompanying drawings described in 1 and 5, the iron core 3 of transformer is to be fixed by folder 4, and high-tension coil 1 and low-voltage coil 2 are arranged on folder 4 by nail pressing 5 and cushion block 6 and coil are played to the effect that compresses and support above, transformer coil and iron core are integrated, greatly reduce the amplitude shaking between lamination, thereby made the reducing noise Amplitude Ratio of transformer larger.
Described in 1 and 3, this novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core strengthens the sectional area of high-tension coil 1 and low-voltage coil 2 wires, thereby has reduced load loss by reference to the accompanying drawings.The wire of coiling changes present low pressure 2250mm2 and high pressure 58mm2 into by original area low pressure 1400mm2 and high pressure 43mm2.
Described in 1,2,3 and 4, in the time of Design of Transformer coil, having adopted low-temperature-rise by reference to the accompanying drawings, is generally lower than 80K, thus the life-span that makes transformer from be generally within 20～30 years, bring up to present more than 40 years.Main method is: (1) strengthens the area of wire, reduces load loss: the wire of coiling changes present low pressure 2250mm2 and high pressure 58mm2 into by original area low pressure 1400mm2 and high pressure 43mm2; (2) expand area of dissipation: the area of dissipation of coil is by original 16.7m
2change present 24.8m into
2; (3) raising heat radiation is efficient: low-voltage coil of dry type transformer 2 adopts honeycomb fashion small airway 12 structures, this kind of structure overcome the eddy current that in coil big airways in the past, air easily forms, thereby improve the efficiency of coil circulation of air, improve the radiating efficiency of air flue, also promoted the intensity of coil simultaneously; (4) adopt high-quality silicon steel sheet, reduce no-load loss: iron core 3 adopts the high magnetic conduction low-loss of high-quality cold-rolled orientation silicon steel sheet 23ZH75, design magnetic flux density is generally at 1.25～1.32T, and specific loss is low, and B800 value is high, has reduced no-load loss.
As described in Fig. 1,2 and 5, the high-tension coil 1 of dry-type transformer and low-voltage coil 2 are sleeved on three newels of three-phase five-limb iron core 3, and are arranged on by nail pressing 5 and cushion block 6 effect that folder 4 plays compression and supports coil above.This structure has improved the anti-short circuit capability of product, has reduced noise.
As described in Fig. 1 and 2, the connecting rod 9 of described dry-type transformer is the line of three high-tension coil 1 outlet terminals, three phase place triangularity connections that three high-tension coils 1 are connected in circuit, and support high-voltage connection terminal by high-voltage strut 7.Connecting rod 9 is to adopt the copper pipe of external diameter 16mm wall thickness 1.5mm to make, and has enabling capabilities strong, easily the feature of processing; High-voltage strut 7 supports high-voltage connection terminal reliably, effectively provides users with the convenient.
Because novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core core structure of the present utility model is the feature that open coil iron core, no-load loss and load loss are very low, can make user's operating cost obtain significantly reducing, and save electric energy, realize low noise, energy-efficient, can go deep into resident load central area, be the ideal product that on future market, dry-type transformer updates.
The utility model does not describe part in detail for prior art.
Claims (7)
1. a novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core, comprise iron core, and be arranged on iron core inside and outside low-voltage coil and high-tension coil, it is characterized in that: described iron core adopts three-phase five-limb structure, every group of iron core is made up of two little iron core frames and two large iron core frames, each iron core frame is to be rolled and formed by two kinds of wide silicon steel sheets of sheet, and making iron core transverse cross section is two rectangles to spelling structure, and the docking port of silicon steel sheet is all arranged on the centre of iron core frame bottom; Described high-tension coil and low-voltage coil are set in three iron core column of three-phase five-limb iron core, and are arranged on above folder coil is played to the effect that compresses and support by nail pressing and cushion block.
2. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, is characterized in that: described low-voltage coil middle part is provided with honeycomb fashion air flue around low-voltage coil, and low-voltage coil is the rectangular configuration of seamed edge band fillet.
3. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, is characterized in that: three leading-out terminals of described high-tension coil connect with delta connection by connecting rod, and the terminals of described connecting rod are connected with high-voltage strut by wire.
4. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, it is characterized in that: three outlet terminals of described low-voltage coil are by low pressure shore supports, and three outlet terminals of low-voltage coil connect with star connection by low pressure neutral point copper bar.
5. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, is characterized in that: described iron core is fixed on above base by folder.
6. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, is characterized in that: described iron core adopts high magnetic conduction low-loss 23ZH75 type silicon steel sheet to be prepared from.
7. novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core according to claim 1, is characterized in that: described low-voltage coil and high-tension coil all adopt high-quality Copper Foil or copper wire winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370217.7U CN203941790U (en) | 2014-07-07 | 2014-07-07 | A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370217.7U CN203941790U (en) | 2014-07-07 | 2014-07-07 | A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core |
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| Publication Number | Publication Date |
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| CN203941790U true CN203941790U (en) | 2014-11-12 |
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| CN201420370217.7U Expired - Fee Related CN203941790U (en) | 2014-07-07 | 2014-07-07 | A kind of novel high-efficiency and energy-saving dry-type transformer for hatch winding iron core |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104900381A (en) * | 2015-07-03 | 2015-09-09 | 中铁电气化局集团有限公司 | Micro-leakage-inductance energy-saving autotransformer with open and curly core and preparation method of autotransformer |
| CN105321671A (en) * | 2014-07-07 | 2016-02-10 | 郑州金源特变电气有限公司 | Novel efficient energy-saving open wound iron core dry type transformer |
-
2014
- 2014-07-07 CN CN201420370217.7U patent/CN203941790U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105321671A (en) * | 2014-07-07 | 2016-02-10 | 郑州金源特变电气有限公司 | Novel efficient energy-saving open wound iron core dry type transformer |
| CN104900381A (en) * | 2015-07-03 | 2015-09-09 | 中铁电气化局集团有限公司 | Micro-leakage-inductance energy-saving autotransformer with open and curly core and preparation method of autotransformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20180707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |