CN202405075U - Single-phase transformer - Google Patents
Single-phase transformer Download PDFInfo
- Publication number
- CN202405075U CN202405075U CN2011204869802U CN201120486980U CN202405075U CN 202405075 U CN202405075 U CN 202405075U CN 2011204869802 U CN2011204869802 U CN 2011204869802U CN 201120486980 U CN201120486980 U CN 201120486980U CN 202405075 U CN202405075 U CN 202405075U
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- Prior art keywords
- iron core
- coil
- core side
- side pole
- voltage
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- Expired - Lifetime
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000004804 winding Methods 0.000 claims abstract description 18
- 230000033228 biological regulation Effects 0.000 claims description 27
- 230000005284 excitation Effects 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a single-phase transformer which comprises an iron core main column, a first iron core side column and a second iron core side column, wherein a low-voltage coil, a medium-voltage coil and a high-voltage coil are sequentially sleeved on the iron core main column from inside to outside; an excitation oil and a voltage adjustment coil are sequentially sleeved on the first iron core side column from inside to outside; and the excitation coil is connected in parallel with the medium-voltage coil sleeved on the iron core main column to adjust the voltage of the voltage adjustment coil. By sleeving the voltage adjustment coil on the first iron core side column, the coil winding is convenient, the risk in manufacturing is reduced, the operation reliability of the transformer is improved, and the whole width of the transformer is effectively reduced.
Description
Technical field
The utility model relates to field transformer, particularly relates to a kind of single-phase transformer.
Background technology
Transformer is a kind of static electric equipment, and it utilizes electromagnetic induction principle, is converted into a kind of AC energy of voltage the AC energy of the another kind of voltage of same frequency.The basic structure of transformer is: the mounting coil of two or more mutually insulateds is on a common iron core, and the coupling through magnetic circuit between them connects each other.Under the applied voltage effect, flow through alternating current in the primary winding, and in iron core, produce alternating flux, this alternating flux simultaneously interlinkage once, secondary coil, according to the law of electromagnetic induction, just can go out electromotive force at the secondary coil internal induction.Thereby secondary coil can power to the load, and has realized power conversion.
Fig. 1 is the structural representation of transformer in the prior art.As shown in Figure 1; The iron core of transformer is single-phase three pillar type; Comprise principal post unshakable in one's determination 1, iron core side pole 2 and iron core side pole 3,, on principal post 1 unshakable in one's determination, be set with coil 4 to realize transformation also being provided with iron yoke 5 in principal post unshakable in one's determination 1, iron core side pole 2 and iron core side pole 3 above and belows.Coil 4 can comprise low-voltage coil, voltage regulation coil, intermediate voltage winding and high-tension coil from inside to outside successively.
Fig. 2 is the vertical view of transformer shown in Figure 1.Wherein around principal post 1 unshakable in one's determination, be disposed with low-voltage coil 11, voltage regulation coil 12, intermediate voltage winding 13 and high-tension coil 14 from inside to outside.
Yet, in prior art illustrated in figures 1 and 2, there is following defective:
1) owing to the needs of impedance voltage, voltage regulation coil 12 can only be placed in intermediate voltage winding 13, the high-tension coil 14, and outwards draw the end that 32 winding protruding heads of voltage regulation coil 12 will pass through high-tension coil 14.Because the anode-cathode voltage of high-tension coil 14 is 220KV, lift one's head and cause end field intensity skewness when passing easily, thereby cause disposable very low through the test rate, operational reliability is poor.
Therefore 2) because all coils all is sleeved on the principal post 1 unshakable in one's determination, can cause the external diameter of high-tension coil 14 to reach 3 meters, coiling is difficulty very, coil radial, the axial dimension fraction is low.
3), cause the backing structure complicacy, the materials that are used for transformer many, and cause the wasting of resources because all coils all is sleeved on the principal post 1 unshakable in one's determination, and the distribution of weight of transformer is too concentrated.
4) because all coils all is sleeved on the principal post 1 unshakable in one's determination, and therefore principal post 1 occupation space unshakable in one's determination is bigger, thereby increased the integral width of transformer, caused hard transportation, and increased cost of transportation.
The utility model content
The technical problem that the utility model will solve provides a kind of single-phase transformer, thereby is convenient to coil winding, reduce makes risk, improves the operational reliability of transformer, effectively reduces the integral width of transformer.
An aspect according to the utility model; A kind of single-phase transformer is provided; Comprise: principal post unshakable in one's determination, first iron core side pole and second iron core side pole, wherein on principal post unshakable in one's determination, be set with low-voltage coil, intermediate voltage winding and high-tension coil from inside to outside successively, on first iron core side pole, be set with magnet exciting coil and voltage regulation coil from inside to outside successively; Magnet exciting coil is parallelly connected with the intermediate voltage winding on being sleeved on principal post unshakable in one's determination, to regulate the voltage of voltage regulation coil.
Preferably, the cross section of principal post unshakable in one's determination is circular, and the cross section of first iron core side pole and second iron core side pole is ellipse, and oval-shaped major axis is identical with the diameter of said circle.
Preferably, oval-shaped area half the greater than circular area.
Preferably; Single-phase transformer also comprises the cylindrical support frame that is sleeved on first iron core side pole; Wherein to be provided with cross section be oval-shaped through hole to cylindrical support frame axial direction, and magnet exciting coil and voltage regulation coil are sleeved on the cylindrical support frame from inside to outside successively.
Preferably, magnet exciting coil and voltage regulation coil are oval, are sleeved on successively on first iron core side pole from inside to outside.
Preferably, the cross section of principal post unshakable in one's determination, first iron core side pole and second iron core side pole is the identical circle of diameter.
The utility model is through magnet exciting coil and voltage regulation coil are sleeved on the iron core side pole of single-phase transformer from inside to outside successively, and magnet exciting coil is parallelly connected with the intermediate voltage winding on being sleeved on principal post unshakable in one's determination, to regulate the voltage of voltage regulation coil.Thereby be convenient to coil winding, reduce make risk, improve the operational reliability of transformer, effectively reduce the integral width of transformer.
Description of drawings
Fig. 1 is the structural representation of single-phase transformer in the prior art.
Fig. 2 is the vertical view of single-phase transformer in the prior art.
Fig. 3 is the vertical view of an embodiment of the utility model single-phase transformer.
Fig. 4 is the vertical view of another embodiment of the utility model single-phase transformer.
Fig. 5 is the vertical view of another embodiment of the utility model single-phase transformer.
Embodiment
With reference to the accompanying drawings the utility model is more comprehensively described, the exemplary embodiment of the utility model wherein is described.
Be that example describes with self coupling oil immersed type 500KV single-phase transformer below.Those skilled in the art are scrutable to be, each embodiment of the utility model is also applicable to the single-phase transformer of other model.
Fig. 3 is the vertical view of an embodiment of the utility model single-phase transformer.As shown in Figure 3, compare with prior art shown in Figure 2, voltage regulation coil 12 is moved on the iron core side pole 2 from principal post 1 unshakable in one's determination, and at voltage regulation coil 12 inboard suit magnet exciting coils 21.Magnet exciting coil 21 is parallelly connected with the intermediate voltage winding 13 on being sleeved on principal post 1 unshakable in one's determination, thus reach the magnetic flux of locking iron core side pole 2, the purpose that coupling changes voltage regulation coil 12 voltages.
Based on the single-phase transformer shown in the utility model the foregoing description; Through magnet exciting coil and voltage regulation coil are sleeved on the iron core side pole of single-phase transformer from inside to outside successively; Magnet exciting coil is parallelly connected with the intermediate voltage winding on being sleeved on principal post unshakable in one's determination, to regulate the voltage of voltage regulation coil.Thereby be convenient to coil winding, reduce make risk, improve the operational reliability of transformer, effectively reduce the integral width of transformer.
For the transformer of same parameter, prior art embodiment illustrated in fig. 3 with shown in Figure 2 is compared, and has the following advantages:
1) through voltage regulation coil is sleeved on the iron core side pole, solved owing to the complicated non-uniform electric that causes of lead-out wire, be easy to the problem that generation office puts, significantly improved the disposable test percent of pass of product.
2) width of transformer can descend 9%, is convenient to transportation.
3) simplify coil winding technology, reduce cost.
According to another specific embodiment of the utility model, the cross section of principal post unshakable in one's determination 1, first iron core side pole 2 and second iron core side pole 3 is the identical circle of diameter.
Because the cross section of first iron core side pole 2 be circular, therefore can be directly the magnet exciting coil 21 and the voltage regulation coil 12 of circle be socketed on first iron core side pole 2 from inside to outside successively.
Fig. 4 is the vertical view of another embodiment of the utility model single-phase transformer.As shown in Figure 4, to compare with embodiment illustrated in fig. 3, the cross section of first iron core side pole 2 and second iron core side pole 3 is oval, and this oval-shaped major axis is identical with the diameter of the circular cross section of principal post 1 unshakable in one's determination.
Cross section through with first iron core side pole 2 and second iron core side pole 3 is transformed to ellipse by circle, and the iron yoke in the transformer is shortened, and reduces the use amount of silicon steel sheet in the iron core, effectively reduces no-load loss and load loss.Identical through guaranteeing above-mentioned oval-shaped major axis simultaneously with the diameter of said circle, can effectively avoid the loss of magnetic flux.
According to specific embodiment of the utility model, the area of the oval cross section of first iron core side pole 2 and second iron core side pole 3 is half the greater than the area of the circular cross section of principal post 1 unshakable in one's determination.Preferably, the oval cross section area of first iron core side pole 2 and second iron core side pole 3 be principal post 1 unshakable in one's determination circular cross-sectional area 53%.
As shown in Figure 4, be on oval-shaped first iron core side pole 2 in order voltage regulation coil 12 and magnet exciting coil 21 to be sleeved on cross section, can install a cylindrical support frame 22 additional for first iron core side pole 2, be used to be sleeved on first iron core side pole.It is oval-shaped through hole that cylindrical support frame 22 axial directions are provided with cross section, so that can be sleeved on first iron core side pole 2.Magnet exciting coil 21 is sleeved on the cylindrical support frame with voltage regulation coil 12 from inside to outside successively.
Cross section through with iron core side pole changes ellipse into by circle, under the prerequisite that does not influence transformer performance, can effectively reduce the weight of transformer self, and the range of decrease surpasses 1%, thereby effectively reduces cost.
Fig. 5 is the vertical view of another embodiment of the utility model single-phase transformer.Compare with embodiment illustrated in fig. 4, in the embodiment shown in fig. 5, do not adopt the mode of bracing frame, but directly voltage regulation coil 12 and magnet exciting coil 21 are processed elliptical shape, be socketed in from inside to outside on first iron core side pole 2.
Through voltage regulation coil 12 and magnet exciting coil 21 are processed elliptical shape, can effectively reduce no-load loss, the reduction noise of transformer of transformer, also increased the mechanical strength of transformer simultaneously.
In the present embodiment; Can adopt existing westbank four-centre method to make oval winding former; Coiling goes out oval magnet exciting coil 21 and voltage regulation coil 12, and successively magnet exciting coil 21 and voltage regulation coil 12 directly being sleeved on cross section by conventional nested form is on oval-shaped first iron core side pole 2.Thereby under the prerequisite that guarantees the electric insulation distance, significantly reduce centre-to-centre spacing unshakable in one's determination, reduce fuel tank length, reduce the length of coil with electromagnetic wire, thereby reduce the consumption of silicon steel sheet, electromagnetic wire, transformer oil, steel significantly.
Transformer for same parameter; Embodiment illustrated in fig. 5 and embodiment illustrated in fig. 4 comparing; Under the situation that guarantees security performance, can further reduce cost, can save 0.5 ton of copper, 2.7 tons of silicon steel sheets, 6.2 tons in transformer oil, 2.2 tons of steel; Compare with embodiment illustrated in fig. 4, cost can descend 3.7%.
The description of the utility model provides for example with for the purpose of describing, and is not exhaustively perhaps the utility model to be limited to disclosed form.A lot of modifications and variation are obvious for those of ordinary skill in the art.Selecting and describing embodiment is principle and practical application for better explanation the utility model, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the utility model design is suitable for special-purpose.
Claims (6)
1. single-phase transformer; It is characterized in that; Comprise: principal post unshakable in one's determination, first iron core side pole and second iron core side pole, wherein on principal post unshakable in one's determination, be set with low-voltage coil, intermediate voltage winding and high-tension coil from inside to outside successively, on first iron core side pole, be set with magnet exciting coil and voltage regulation coil from inside to outside successively; Magnet exciting coil is parallelly connected with the intermediate voltage winding on being sleeved on principal post unshakable in one's determination, to regulate the voltage of voltage regulation coil.
2. single-phase transformer according to claim 1; It is characterized in that; The cross section of said principal post unshakable in one's determination is circular, and the cross section of said first iron core side pole and second iron core side pole is ellipse, and said oval-shaped major axis is identical with the diameter of said circle.
3. single-phase transformer according to claim 2 is characterized in that, said oval-shaped area is half the greater than said circular area.
4. according to claim 2 or 3 described single-phase transformers; It is characterized in that; Single-phase transformer also comprises the cylindrical support frame that is sleeved on first iron core side pole; Wherein to be provided with cross section be oval-shaped through hole to cylindrical support frame axial direction, and magnet exciting coil and voltage regulation coil are sleeved on the cylindrical support frame from inside to outside successively.
5. according to claim 2 or 3 described single-phase transformers, it is characterized in that magnet exciting coil and voltage regulation coil are oval, are sleeved on successively on first iron core side pole from inside to outside.
6. single-phase transformer according to claim 1 is characterized in that, the cross section of said principal post unshakable in one's determination, first iron core side pole and second iron core side pole is the identical circle of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204869802U CN202405075U (en) | 2011-11-30 | 2011-11-30 | Single-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204869802U CN202405075U (en) | 2011-11-30 | 2011-11-30 | Single-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202405075U true CN202405075U (en) | 2012-08-29 |
Family
ID=46702707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204869802U Expired - Lifetime CN202405075U (en) | 2011-11-30 | 2011-11-30 | Single-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202405075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403106A (en) * | 2011-11-30 | 2012-04-04 | 国家电网公司 | Single-phase transformer |
-
2011
- 2011-11-30 CN CN2011204869802U patent/CN202405075U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403106A (en) * | 2011-11-30 | 2012-04-04 | 国家电网公司 | Single-phase transformer |
| CN102403106B (en) * | 2011-11-30 | 2014-03-05 | 国家电网公司 | Single-phase transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120829 |