CN204360909U - A kind of variable-frequency transformer - Google Patents
A kind of variable-frequency transformer Download PDFInfo
- Publication number
- CN204360909U CN204360909U CN201520014088.2U CN201520014088U CN204360909U CN 204360909 U CN204360909 U CN 204360909U CN 201520014088 U CN201520014088 U CN 201520014088U CN 204360909 U CN204360909 U CN 204360909U
- Authority
- CN
- China
- Prior art keywords
- iron core
- oil immersion
- busbar
- immersion case
- secondary coil
- 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 variable-frequency transformer, comprise oil immersion case, iron core and busbar; Iron core entirety is placed in space in oil immersion case, busbar is arranged on outside oil immersion case, the circulatory flow that one holds oil immersion case inner space is provided with in the sidewall of oil immersion case, this circulatory flow is communicated with the inner space of described busbar, in this circulatory flow, be provided with an oil circulating pump, the supply line that oil circulating pump and outside are arranged separately is connected; Be provided with secondary coil outside described iron core, the outside of secondary coil is provided with primary coil; The utility model, at iron core integral arranged outside oil immersion case, arranges the circulatory flow that has oil pump, greatly improves the radiating efficiency of transformer whole in oil immersion case, make transformer be in an efficient operating temperature range.
Description
Technical field
The utility model relates to transformer technology field, is specially a kind of variable-frequency transformer.
Background technology
Frequency converter is AC power power frequency supply being transformed into various frequency, to realize the equipment of the variable-speed operation of motor; Transformer is the device of conversion alternating voltage, electric current and impedance, when being connected with alternating current in primary coil, just producing exchange flux in iron core, making to induce voltage in secondary coil.Frequency converter and transformer are effectively combined i.e. said variable-frequency transformer, variable-frequency transformer is as a kind of controlled two-way transmission facility, there is control and simply can overcome restriction on connected mains frequency, the size and Orientation of trend is controlled to flow through continuously by regulating the angle relationship of two end systems, simultaneously, not only may be used for Asynchronous Interconnection, also the power delivery being applicable to synchronised grids controls, development prospect is wide, but transformer mainly contains two large divisions's loss: the loss of iron core when transformer iron loss is unloaded, be directly proportional to the weight of iron core, when transformer copper loss and load, electric current is by the loss of the copper resistance exothermic energy of winding, relevant with the load factor of transformer, and the heat in transformer is concentrated or can not well distribute, the normal work of variable-frequency transformer is had a great impact, improve the radiating efficiency of variable-frequency transformer, making the actuating coil of transformer be in the state of a relative low temperature, is problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of variable-frequency transformer, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of variable-frequency transformer, comprises oil immersion case, iron core and busbar; Iron core entirety is placed in space in oil immersion case, busbar is arranged on outside oil immersion case, the circulatory flow that one holds oil immersion case inner space is provided with in the sidewall of oil immersion case, this circulatory flow is communicated with the inner space of described busbar, in this circulatory flow, be provided with an oil circulating pump, the supply line that oil circulating pump and outside are arranged separately is connected; Secondary coil is provided with outside described iron core, the outside of secondary coil is provided with primary coil, primary coil is connected busbar with secondary coil, primary coil comprises at least one group of armature winding, secondary coil comprises at least one group of secondary winding, iron core comprises the first long slab and the second long slab, is provided with the first lateral column and the second lateral column between the first long slab and the second long slab; First lateral column, the first long slab, the second lateral column and the second long slab iron core that end to end formation is closed successively.
Further, between described first lateral column and the second lateral column, be provided with at least two center pillars, two center pillars are all wound with primary coil and secondary coil.
Further, the thyristor being with automatic control circuit is equipped with between the input of described primary coil and busbar and between the output of secondary coil and busbar.
Further, in two described center pillars and and secondary coil between be equipped with separator.
Compared with prior art, the utility model is at iron core integral arranged outside oil immersion case, the circulatory flow that one has oil pump is set in oil immersion case, greatly improves the radiating efficiency of transformer whole, make transformer be in an efficient operating temperature range, two lateral columns of iron core and the service efficiency of at least two center pillar raising magnet assemblies, make magnetic component structure smaller volume, weight, and then reduce the length of winding, copper loss can be reduced simultaneously, the AC system flux change amount that produces of armature winding and leakage field also can diminish in addition, closed iron core comprises organizes winding more, in order to provide flux closure path, the separator that nonferromagnetic material is made is provided with in iron core, the linear magnetization scope of iron core can be significantly improved, effectively prevent transformer from generating heat, thus improve its frequency adaptation scope and the adaptive capacity for null offset.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of variable-frequency transformer of the utility model.
Fig. 2 is the structural representation of a primary coil and secondary coil in Fig. 1.
In figure: 1-busbar, 2-thyristor, 3-center pillar, 4-oil immersion case, 5-circulatory flow, 6-iron core, 7-oil circulating pump, 8-first long slab, 9-second lateral column, 10-second long slab, 11-primary coil, 12-secondary coil, 13-separator, 14-armature winding, 15-secondary winding, 16-first lateral column.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1 ~ 2, a kind of variable-frequency transformer, comprise oil immersion case 4, iron core 6 and busbar 1; Iron core 6 entirety is placed in space in oil immersion case 4, busbar is arranged on outside oil immersion case 4, the circulatory flow 5 that one holds oil immersion case 4 inner space is provided with in the sidewall of oil immersion case, this circulatory flow 5 is communicated with the inner space of described busbar 1, in this circulatory flow 5, be provided with an oil circulating pump 7, the supply line that oil circulating pump 7 and outside are arranged separately is connected;
Secondary coil 12 is provided with outside iron core 6, the outside of secondary coil 12 is provided with primary coil 11, primary coil 11 is connected busbar 1 with secondary coil 12, primary coil 11 comprises at least one group of armature winding 14, secondary coil 12 comprises at least one group of secondary winding 15, iron core 6 comprises the first long slab 8 and the second long slab 10, the first lateral column 16 and the second lateral column 9 is provided with between first long slab 8 and the second long slab 10, at least two center pillars 3 are provided with between first lateral column 16 and the second lateral column 9, two center pillars 3 are all wound with primary coil 11 and secondary coil 12, between the input of primary coil 11 and busbar 1 and be equipped with the thyristor 2 being with automatic control circuit between the output of secondary coil 12 and busbar 1, first lateral column 16, first long slab 8, second lateral column 9 and the second long slab 10 iron core 6 that end to end formation is closed successively, in two center pillars 3 and and secondary coil 12 between be equipped with separator 13.
When transformer runs, the power frequency in primary coil 11 significantly improves after thyristor 2, and in secondary coil 12, the high-frequency current of induction is reduced to normal value again after thyristor 2, is delivered to power consumer.
Owing to have employed a kind of variable-frequency transformer of technique scheme, at iron core integral arranged outside oil immersion case, the circulatory flow that one has oil pump is set in oil immersion case, greatly improves the radiating efficiency of transformer whole, make transformer be in an efficient operating temperature range, two lateral columns of iron core and the service efficiency of at least two center pillar raising magnet assemblies, make magnetic component structure smaller volume, weight, and then reduce the length of winding, copper loss can be reduced simultaneously, the AC system flux change amount that produces of armature winding and leakage field also can diminish in addition, closed iron core comprises organizes winding more, in order to provide flux closure path, the separator that nonferromagnetic material is made is provided with in iron core 1, the linear magnetization scope of iron core can be significantly improved, effectively prevent transformer from generating heat, thus improve its frequency adaptation scope and the adaptive capacity for null offset.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (4)
1. a variable-frequency transformer, is characterized in that, comprises oil immersion case, iron core and busbar; Iron core entirety is placed in space in oil immersion case, busbar is arranged on outside oil immersion case, the circulatory flow that one holds oil immersion case inner space is provided with in the sidewall of oil immersion case, this circulatory flow is communicated with the inner space of described busbar, in this circulatory flow, be provided with an oil circulating pump, the supply line that oil circulating pump and outside are arranged separately is connected; Secondary coil is provided with outside described iron core, the outside of secondary coil is provided with primary coil, primary coil is connected busbar with secondary coil, primary coil comprises at least one group of armature winding, secondary coil comprises at least one group of secondary winding, iron core comprises the first long slab and the second long slab, is provided with the first lateral column and the second lateral column between the first long slab and the second long slab; First lateral column, the first long slab, the second lateral column and the second long slab iron core that end to end formation is closed successively.
2. a kind of variable-frequency transformer according to claim 1, is characterized in that, is provided with at least two center pillars between described first lateral column and the second lateral column, and two center pillars are all wound with primary coil and secondary coil.
3. a kind of variable-frequency transformer according to claim 1, is characterized in that, between the input of described primary coil and busbar and be equipped with the thyristor being with automatic control circuit between the output of secondary coil and busbar.
4. a kind of variable-frequency transformer according to claim 2, is characterized in that, in two described center pillars and and secondary coil between be equipped with separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520014088.2U CN204360909U (en) | 2015-01-09 | 2015-01-09 | A kind of variable-frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520014088.2U CN204360909U (en) | 2015-01-09 | 2015-01-09 | A kind of variable-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204360909U true CN204360909U (en) | 2015-05-27 |
Family
ID=53262364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520014088.2U Expired - Fee Related CN204360909U (en) | 2015-01-09 | 2015-01-09 | A kind of variable-frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204360909U (en) |
-
2015
- 2015-01-09 CN CN201520014088.2U patent/CN204360909U/en not_active Expired - Fee Related
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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: 20150527 Termination date: 20160109 |