CN205384931U - Supporting structure of improve anti short circuit ability of power transformer - Google Patents
Supporting structure of improve anti short circuit ability of power transformer Download PDFInfo
- Publication number
- CN205384931U CN205384931U CN201620169778.XU CN201620169778U CN205384931U CN 205384931 U CN205384931 U CN 205384931U CN 201620169778 U CN201620169778 U CN 201620169778U CN 205384931 U CN205384931 U CN 205384931U
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- CN
- China
- Prior art keywords
- supporting construction
- coil
- short circuit
- power transformer
- circuit capability
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- 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 relates to a supporting structure of improve anti short circuit ability of power transformer is setting up a bearing structure between the two post coils and/or between coil and the return yoke, sets up the 2nd bearing structure between coil and oil tank, and both ends are fixed with primary coil of transformer compact structure about a bearing structure and the 2nd bearing structure. The utility model discloses adopting bearing structure between the double -phase coil and between coil and the oil tank, the fine requirement of satisfying the anti short circuit ability of power transformer of ability has restricted the deformation of transformer at short -circuit fault lower coil, has reduced the fault rate under the power transformer short circuit condition.
Description
Technical field
This utility model relates to Transformer Manufacturing Technology, specifically a kind of supporting construction improving power transformer anti-short circuit capability.
Background technology
In order to reduce power transformer manufacturing cost, its coil is elliptical cylinder-shape or elongated cylindrical (cross section is track type) by cylinder design, causes that exterior loop bears the ability degradation of short circuit.Short trouble is one of transformator most common failure, and short circuit can make transformator damage, so the anti-short circuit capability strengthening transformator is not sneezed at.
At present, power transformer improves the method for anti-short circuit capability and mainly takes compaction measure at end turn, but can only transformator be played a key effect at the anti-short circuit capability of axial direction, and coil anti-short circuit capability radially can not be played good action.
Utility model content
There is the deficiency of anti-short circuit capability difference for the elliptical cylinder-shape of power transformer in prior art or elongated cylindrical (cross section is track type) coil, the technical problems to be solved in the utility model is to provide a kind of supporting construction improving power transformer anti-short circuit capability.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of supporting construction improving power transformer anti-short circuit capability of this utility model, between two post coils and/or between coil and return yoke, the first supporting construction is set, arranging the second supporting construction between coil and fuel tank, the first supporting construction and the upper and lower two ends of the second supporting construction are fixed with primary of transformer compressing structure.
Described first supporting construction adopts insulant, is shaped as filling the spatial form between two post coils；Described second supporting construction adopts insulant, is shaped as filling the spatial form between coil and ground；First supporting construction and the second supporting construction are of a size of the position that can meet anti-short circuit capability requirement along fuel tank short-axis direction.
The described position meeting anti-short circuit capability requirement is coated with coil or exposed portion coil completely for extending at fuel tank short-axis direction.
Described first supporting construction and the upper and lower two ends of the second supporting construction are concordant with coil or have at least one end to stretch out coil.
Described first supporting construction and the second supporting construction are provided with heat radiation oil duct.
Also having the first～tri-wedge structure, described first supporting construction is two parts, and the first wedge structure jam-packed is between two parts of the first supporting construction；The second supporting construction is formed after second wedge structure and the assembling of the 3rd wedge structure.
Stay is all adopted to be supported in every post between all adjacent windings.
This utility model has the advantages that and advantage:
1. this utility model have employed supporting construction between two phase coils and between coil and fuel tank, the requirement of power transformer anti-short circuit capability can be met very well, limit the transformator deformation in short trouble lower coil, reduce the fault rate in short-circuit of power transformer situation.
2. this utility model simple in construction, it is easy to accomplish, safety is high, reliability is high.
Accompanying drawing explanation
Fig. 1 is this utility model middle section is elliptical line coil structures schematic diagram；
Fig. 2 is this utility model middle section is racetrack-type rotor coil structural representation；
Fig. 3 is the second wedge structure in this utility model and the 3rd wedge structure assembling schematic diagram；
Fig. 4 is this utility model middle section is close to matrix loop structure schematic diagram.
Wherein, 1 is iron core, and 2 is low-voltage coil, and 3 is high-tension coil, and 4 is low-pressure side folder, and 5 is high-pressure side folder, and 6 is the first supporting construction, and 7 is the second supporting construction, and 8 is keeper, and 9 is fuel tank.
Detailed description of the invention
As shown in Figure 1, a kind of supporting construction improving power transformer anti-short circuit capability of this utility model, between two post coils and/or between coil and return yoke, the first supporting construction is set, arranging the second supporting construction between coil and fuel tank, the first supporting construction and the upper and lower two ends of the second supporting construction are fixed with transformer primary structure.
The present embodiment is for three-phase three-column ellipse coil power transformer, first supporting construction 6 is set between adjacent two phase coils, arranging the second supporting construction 7 between coil and fuel tank 9, the first supporting construction 6 and the second supporting construction about 7 two ends are fixed by keeper 8 and transformer primary structure.
First supporting construction 6 and the second supporting construction 7 all adopt lamination wood or laminated paper board as insulant, are filled in the space between two post coils, and shape is coincide with this space；Second supporting construction is filled in the space between coil and fuel tank, and shape is coincide with this space；First supporting construction 6 and the second supporting construction 7 are of a size of the position that can meet anti-short circuit capability requirement along fuel tank short-axis direction, this position is arranged on thick consistent position folded with iron core by the present embodiment, whole coil can also be coated with, as long as disclosure satisfy that anti-short circuit capability requirement.It is concordant with coil or have at least one end to stretch out coil that the short transverse of the first supporting construction 6 and the second supporting construction 7 must is fulfilled for its upper and lower two ends, it is ensured that is all retrained in short transverse by coil.
In order to meet coil cooling requirements, in the first supporting construction 6 and the second supporting construction 7, it is provided with multiple axial oil duct.
As it is shown on figure 3, for the requirement meeting technique assembling, be two parts by the first supporting construction, insert the first wedge structure between the two sections, for ensureing the effective support to coil；Second supporting construction 7 is split as two parts, i.e. the second wedge structure and the 3rd wedge structure, the assembling of convenient machine body and fuel tank.
In order to ensure the coverage between every post interior loop, the present embodiment all adopts stay to be supported in every post between all adjacent windings.
A kind of supporting construction improving power transformer anti-short circuit capability of this utility model is realized by the following method:
First supporting construction is installed between two post coils and/or between coil and return yoke after mounting coil；
Complete after device body assembles all the other operations, outside device height axle, to be respectively mounted the second wedge structure；
Device body after having assembled above and still knocked-down 3rd wedge structure are dried process simultaneously；
In fuel tank, major axis both sides place dried 3rd wedge structure respectively；
Device body with the second wedge structure is assembled with the fuel tank with the 3rd wedge structure, makes the second wedge structure and the 3rd wedge structure closely cooperate, complete the assembling of the second supporting construction.
In the present embodiment, when installing the first supporting construction, the first supporting construction is divided into two and is partially installed between two post coils, if two parts tightness degree is inadequate, then need to squeeze into one or more first wedge structure, for the whole supporting construction of stretching；
After to be dried, due to lamination wood or laminated paper board water loss, size diminishes, in fact it could happen that supporting construction loosens phenomenon, then is arranged by one or more first wedge structures squeezed into, it is ensured that effectively prop up support.
Second supporting construction 7 is divided into the second wedge structure and the 3rd wedge structure is two-part in order that when device body and fuel tank assemble, it is prevented that support friction damage coil between structure and coil.
As in figure 2 it is shown, be three-phase three-column Long Circle coil power transformator, owing to coil section is Long Circle, same employing this utility model structure realizes the secure support to coil, improves the anti-short circuit capability of power transformer, and has better economic benefit.
As shown in Figure 4, for the three-phase three-column power transformer close to square coil, coil section is rectangle, arranges the second supporting construction too in device height low-pressure side, and its assembling process is identical with aforementioned assembling process.
Claims (7)
1. the supporting construction improving power transformer anti-short circuit capability, it is characterized in that: between two post coils and/or between coil and return yoke, the first supporting construction is set, arranging the second supporting construction between coil and fuel tank, the first supporting construction and the upper and lower two ends of the second supporting construction are fixed with primary of transformer compressing structure.
2. by the supporting construction improving power transformer anti-short circuit capability described in claim 1, it is characterised in that: described first supporting construction adopts insulant, is shaped as filling the spatial form between two post coils；Described second supporting construction adopts insulant, is shaped as filling the spatial form between coil and ground；First supporting construction and the second supporting construction are of a size of the position that can meet anti-short circuit capability requirement along fuel tank short-axis direction.
3. by the supporting construction improving power transformer anti-short circuit capability described in claim 2, it is characterised in that: the described position meeting anti-short circuit capability requirement is coated with coil or exposed portion coil completely for extending at fuel tank short-axis direction.
4. by the supporting construction improving power transformer anti-short circuit capability described in claim 1, it is characterised in that: described first supporting construction and the upper and lower two ends of the second supporting construction are concordant with coil or have at least one end to stretch out coil.
5. by the supporting construction improving power transformer anti-short circuit capability described in claim 1, it is characterised in that: described first supporting construction and the second supporting construction are provided with heat radiation oil duct.
6. by the supporting construction improving power transformer anti-short circuit capability described in claim 1, it is characterised in that: also having the first～tri-wedge structure, described first supporting construction is two parts, and the first wedge structure jam-packed is between two parts of the first supporting construction；The second supporting construction is formed after second wedge structure and the assembling of the 3rd wedge structure.
7. by the supporting construction improving power transformer anti-short circuit capability described in claim 1, it is characterised in that: all adopt stay to be supported between all adjacent windings in every post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620169778.XU CN205384931U (en) | 2016-03-04 | 2016-03-04 | Supporting structure of improve anti short circuit ability of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620169778.XU CN205384931U (en) | 2016-03-04 | 2016-03-04 | Supporting structure of improve anti short circuit ability of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205384931U true CN205384931U (en) | 2016-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620169778.XU Expired - Fee Related CN205384931U (en) | 2016-03-04 | 2016-03-04 | Supporting structure of improve anti short circuit ability of power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205384931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575630A (en) * | 2016-03-04 | 2016-05-11 | 特变电工股份有限公司 | Supporting structure for improving short-circuit resisting ability of power transformer and realizing method thereof |
-
2016
- 2016-03-04 CN CN201620169778.XU patent/CN205384931U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105575630A (en) * | 2016-03-04 | 2016-05-11 | 特变电工股份有限公司 | Supporting structure for improving short-circuit resisting ability of power transformer and realizing method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20210304 |