CN105575631A - Supporting structure for improving short-circuit resisting capacity of power transformer and achievement method thereof - Google Patents
Supporting structure for improving short-circuit resisting capacity of power transformer and achievement method thereof Download PDFInfo
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- CN105575631A CN105575631A CN201610126272.5A CN201610126272A CN105575631A CN 105575631 A CN105575631 A CN 105575631A CN 201610126272 A CN201610126272 A CN 201610126272A CN 105575631 A CN105575631 A CN 105575631A
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- Prior art keywords
- supporting construction
- coil
- short circuit
- power transformer
- circuit capability
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a supporting structure for improving the short-circuit resisting capacity of a power transformer and an achievement method thereof. First supporting structures are arranged between two cylindrical coils and/or the coils and side yokes, second supporting structures are arranged on the outer side of the coils, and the upper ends and the lower ends of the first supporting structures and the upper ends and the lower ends of the second supporting structures are fixed to a primary coil pressing structure of the transformer. The supporting structures are adopted between the two-phase coils and on the outer side of the coils, so that the requirement for the short-circuit resisting capacity of the power transformer can be well met, coil deformation of the transformer under short-circuit faults is limited, and the fault rate of the power transformer under the short-circuit situation is reduced.
Description
Technical field
The present invention relates to Transformer Manufacturing Technology, specifically a kind of supporting construction and its implementation 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 exterior loop to bear the ability degradation of short circuit.Short trouble is one of transformer most common failure, and short circuit can make transformer damage, so the anti-short circuit capability strengthening transformer is not sneezed at.
At present, the method that power transformer improves anti-short circuit capability mainly takes compaction measure at end winding, but can only play a key effect to the anti-short circuit capability of transformer at axial direction, and can not play good action to the anti-short circuit capability of coil radial direction.
Summary of the invention
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 problem to be solved in the present invention is to provide a kind of supporting construction and its implementation of improving power transformer anti-short circuit capability.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of supporting construction improving power transformer anti-short circuit capability of the present invention, between two post coils and/or the first supporting construction is set between coil and return yoke, in coil arranged outside second supporting construction, the first supporting construction and the upper and lower two ends of the second supporting construction and primary of transformer compressing structure are fixed.
Described first supporting construction adopts insulating material, and shape is to fill the spatial form between two post coils; Described second supporting construction adopts insulating material, is can shape outside support coils near the shape of coil sides; 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 for extend to complete coated coil or exposed portion coil 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.
Pulling belt structure is provided with outside second supporting construction.
Pulling belt structure two ends are located by the screw rod that draws connecting folder from top to bottom, a part for pulling belt structure, the first supporting construction and the second supporting construction shaper body.
Pulling belt structure surrounds the outer circumference of every phase coil and the first supporting construction and/or the second supporting construction, for the first supporting construction and the second supporting construction provide radial support power.
Stay is all adopted to support in every post between all adjacent windings.
A kind of implementation method improving the supporting construction of power transformer anti-short circuit capability of the present invention, is characterized in that comprising the following steps:
First supporting construction is installed between two post coils and/or between coil and return yoke after mounting coil;
Second supporting construction is installed on outside coil, and is strained by pulling belt structure, keeps stretching state with coil outer.
The present invention has following beneficial effect and advantage:
1. the present invention have employed supporting construction between two phase coils and outside coil, can meet the requirement of power transformer anti-short circuit capability very well, limits the distortion of transformer in short trouble lower coil, reduces the failure rate in short-circuit of power transformer situation.
2. structure of the present invention is simple, is easy to realize, and fail safe is high, reliability is high.
Accompanying drawing explanation
Fig. 1 is middle section of the present invention is elliptical line coil structures schematic diagram;
Fig. 2 is middle section of the present invention is close to round rectangle loop construction schematic diagram;
Wherein, 1 is the first supporting construction, and 2 is the second supporting construction, and 3 is high-tension coil, and 4 is low-voltage coil, and 5 is low-pressure side folder, and 6 is pulling belt structure, and 7 is iron core, and 8 draw screw rod for folder, and 9 is high-pressure side folder.
Embodiment
As shown in Figure 1, a kind of supporting construction improving power transformer anti-short circuit capability of the present invention, between two post coils and/or the first supporting construction is set between coil and return yoke, in coil arranged outside second supporting construction, the first supporting construction and the upper and lower two ends of the second supporting construction and transformer primary structure are fixed.
The present embodiment is for the oval coil power transformer of three-phase three-column, first supporting construction 1 is set between adjacent two phase coils, fix at coil arranged outside second supporting construction 2, first supporting construction 1 and the second supporting construction about 2 two ends and transformer primary compressing structure.
First supporting construction 1 and the second supporting construction 2 all adopt lamination wood or laminated paper board as insulating material, and the first supporting construction 1 is filled in the space between two post coils, and shape and this space coincide; Second supporting construction, outside coil, is coincide near coil sides shape and coil outer shape; First supporting construction 1 and the second supporting construction 2 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 and folds thick consistent position with iron core by the present embodiment, also can coated whole coil, as long as anti-short circuit capability requirement can be met.It is concordant with coil or have at least one end to stretch out coil that the short transverse of the first supporting construction 1 and the second supporting construction 2 must meet its upper and lower two ends, ensures coil all to retrain in short transverse.
In order to meet coil cooling requirements, in the first supporting construction 1 and the second supporting construction 2, be provided with multiple axial oil duct.
In order to ensure the coverage between every post interior loop, the present embodiment all adopts stay to support in every post between all adjacent windings.
A kind of supporting construction improving power transformer anti-short circuit capability of the present invention realizes by the following method:
After mounting coil, the first supporting construction 1 is installed between two post coils and/or between coil and return yoke;
Second supporting construction is positioned over outside coil, is strained by pulling belt structure 6, and pulling belt structure two ends are located by the screw rod 8 that draws of folder from top to bottom.
In the present embodiment, when installation the first supporting construction, the first supporting construction being divided into two parts and being arranged between two post coils, if two parts tightness degree is inadequate, then needing by regulating cardboard, be used for stretching first supporting construction and coil;
After to be dried, due to lamination wood or laminated paper board water loss, size diminishes, may occur that supporting construction loosens phenomenon, add the first wedge structure by regulating cardboard to arrange, the second supporting construction, by arranging pulling belt structure, ensures the effective support of the second supporting construction to coil.
As shown in Figure 2, be the power transformer of three-phase three-column round rectangle coil, coil section is round rectangle, and arrange the second supporting construction too in device height low-pressure side, its assembling process is identical with aforementioned assembling process.
Claims (10)
1. one kind is improved the supporting construction of power transformer anti-short circuit capability, it is characterized in that: between two post coils and/or the first supporting construction is set between coil and return yoke, in coil arranged outside second supporting construction, the first supporting construction and the upper and lower two ends of the second supporting construction and primary of transformer compressing structure are fixed.
2. by the supporting construction of raising power transformer anti-short circuit capability according to claim 1, it is characterized in that: described first supporting construction adopts insulating material, and shape is to fill the spatial form between two post coils; Described second supporting construction adopts insulating material, is can shape outside support coils near the shape of coil sides; 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 of raising power transformer anti-short circuit capability according to claim 2, it is characterized in that: the described position meeting anti-short circuit capability requirement is for extend to complete coated coil or exposed portion coil at fuel tank short-axis direction.
4. by the supporting construction of raising power transformer anti-short circuit capability according to claim 1, it is characterized 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 of raising power transformer anti-short circuit capability according to claim 1, it is characterized in that: described first supporting construction and the second supporting construction are provided with heat radiation oil duct.
6., by the supporting construction of raising power transformer anti-short circuit capability according to claim 1, it is characterized in that: outside the second supporting construction, be provided with pulling belt structure.
7., by the supporting construction of raising power transformer anti-short circuit capability according to claim 6, it is characterized in that: pulling belt structure two ends are located by the screw rod that draws connecting folder from top to bottom, a part for pulling belt structure, the first supporting construction and the second supporting construction shaper body.
8. by the supporting construction of raising power transformer anti-short circuit capability according to claim 6, it is characterized in that: pulling belt structure surrounds the outer circumference of every phase coil and the first supporting construction and/or the second supporting construction, for the first supporting construction and the second supporting construction provide radial support power.
9. by the supporting construction of raising power transformer anti-short circuit capability according to claim 1, it is characterized in that: in every post, between all adjacent windings, all adopt stay to support.
10. improve an implementation method for the supporting construction of power transformer anti-short circuit capability, it is characterized in that comprising the following steps:
First supporting construction is installed between two post coils and/or between coil and return yoke after mounting coil;
Second supporting construction is installed on outside coil, and is strained by pulling belt structure, keeps stretching state with coil outer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126272.5A CN105575631B (en) | 2016-03-04 | 2016-03-04 | Improve the supporting construction and its implementation of power transformer anti-short circuit capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610126272.5A CN105575631B (en) | 2016-03-04 | 2016-03-04 | Improve the supporting construction and its implementation of power transformer anti-short circuit capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105575631A true CN105575631A (en) | 2016-05-11 |
| CN105575631B CN105575631B (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610126272.5A Active CN105575631B (en) | 2016-03-04 | 2016-03-04 | Improve the supporting construction and its implementation of power transformer anti-short circuit capability |
Country Status (1)
| Country | Link |
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| CN (1) | CN105575631B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806953A (en) * | 2018-05-28 | 2018-11-13 | 保定天威保变电气股份有限公司 | The radial stretching method and device of transformer body |
| CN112216490A (en) * | 2020-10-13 | 2021-01-12 | 云南电网有限责任公司电力科学研究院 | Three-phase transformer with adjacent-phase supporting strips |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5516419A (en) * | 1978-07-21 | 1980-02-05 | Hitachi Ltd | Core type transformer |
| JPH033719U (en) * | 1989-06-02 | 1991-01-16 | ||
| CN2387620Y (en) * | 1999-03-03 | 2000-07-12 | 上海置信变压器有限公司 | Amorphous alloy drying transformer |
| CN205384932U (en) * | 2016-03-04 | 2016-07-13 | 特变电工股份有限公司 | Supporting structure of improve anti short circuit ability of power transformer |
-
2016
- 2016-03-04 CN CN201610126272.5A patent/CN105575631B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5516419A (en) * | 1978-07-21 | 1980-02-05 | Hitachi Ltd | Core type transformer |
| JPH033719U (en) * | 1989-06-02 | 1991-01-16 | ||
| CN2387620Y (en) * | 1999-03-03 | 2000-07-12 | 上海置信变压器有限公司 | Amorphous alloy drying transformer |
| CN205384932U (en) * | 2016-03-04 | 2016-07-13 | 特变电工股份有限公司 | Supporting structure of improve anti short circuit ability of power transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108806953A (en) * | 2018-05-28 | 2018-11-13 | 保定天威保变电气股份有限公司 | The radial stretching method and device of transformer body |
| CN112216490A (en) * | 2020-10-13 | 2021-01-12 | 云南电网有限责任公司电力科学研究院 | Three-phase transformer with adjacent-phase supporting strips |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105575631B (en) | 2017-12-26 |
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