CN106057441A - Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability - Google Patents
Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability Download PDFInfo
- Publication number
- CN106057441A CN106057441A CN201610680761.5A CN201610680761A CN106057441A CN 106057441 A CN106057441 A CN 106057441A CN 201610680761 A CN201610680761 A CN 201610680761A CN 106057441 A CN106057441 A CN 106057441A
- Authority
- CN
- China
- Prior art keywords
- coil windings
- phase coil
- iron core
- oil
- coil winding
- 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.)
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Classifications
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/266—Fastening or mounting the core on casing or support
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
Abstract
The invention discloses an oil-immersed transformer body reinforcement structure capable of enhancing the short-circuit withstand ability. The oil-immersed transformer body reinforcement structure comprises an iron core. The iron core comprises an upper iron yoke, a lower iron yoke, a left core column, a right core column and a middle column. Coil windings are arranged on the iron core and include a-phase coil windings, b-phase coil windings and c-phase coil windings, two clamp assemblies are respectively arranged at the upper end and the lower end of the iron core and are connected with each other by clamping rods, each clamp assembly comprises a high-voltage-side clamp and a low-voltage-side clamp, the a-phase coil windings and the c-phase coil windings are respectively provided with reinforcement plates which are respectively arranged along the directions of the long axes of the a-phase coil windings and the c-phase coil windings, and bamboo bars are arranged at gaps between the coil windings and the iron core. The oil-immersed transformer body reinforcement structure has the advantages that the supporting strength of inner layers can be improved when the coil windings inwardly deform, and accordingly the internal shrinkage force bearing ability of the coil windings under short-circuit conditions can be enhanced; the coil windings can be assuredly tightly wound, and the coil windings and the iron core can assuredly tightly cling to one another.
Description
Technical field
The present invention relates to transformer technology field, be specifically related to a kind of oil-filled transformer device strengthening anti-short circuit capability
Body reinforcement structure.
Background technology
In recent years, the Accident of Transformer situation analysis announced in recent years from State Grid Corporation of China, anti-short circuit capability is the most
Become the major reason of distribution transformer accident.Distribution transformer winding is Long Circle structure, and suffered electric power can not show a candle to circle
Winding is uniform, is easier to deformation when bearing sudden short circuit electric power.Distribution transformer device body uses axial load-carrying members, and winding leads to
Cross folder from top to bottom and core insulation compresses, low voltage layer type coil many employings foil structure, the axial electromagnetic force that axial leakage field produces
The least.In winding, electric current is producing stray field about, is divided into axial component and width in component, axial leakage field and winding
Interaction Law of Electric Current produces diametral force, along winding width radially to power, makes interior winding be stressed, and outer winding tension power effect is (interior
Coil is the most recessed, and exterior loop is the most swollen), the oil immersion-type distribution transformer burnt because of sudden short circuit is disassembled middle discovery major axis side
To radial deformation the most serious.And long axis direction does not has good inner support between coil and iron core, to bear when short circuit
The deformation that the power of inside contracting is caused, these deformation are generally with the destruction of main longitudinal insulating structure, and time serious, even wire is pulled off.And
And, the Long Circle coil manufacturing process of existing distribution transformer and equipment can not effectively guarantee taking up of coil, coil windings
Long limit be easily coiled into loose circular arc.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of oil immersed type strengthening anti-short circuit capability and become
Depressor device body reinforcement structure, both can ensure that taking up of coil windings, can bear energy with intensifier coil winding when short circuit again
Power.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions: Yi Zhongke
Strengthening the oil-filled transformer device body reinforcement structure of anti-short circuit capability, including iron core, this iron core is by upper yoke, lower yoke, Zuo Xin
Post, right stem stem and center pillar form, and left stem, center pillar and right stem are arranged between upper yoke and lower yoke the most successively,
Iron core is provided with oblong coil windings, and coil windings includes a phase coil winding, b phase coil winding and c phase coil winding,
Wherein, a phase coil winding is around being located on left stem, and b phase coil winding is around being located on center pillar, and c phase coil winding is around being located at the right side
On stem, top and bottom unshakable in one's determination are respectively equipped with between a folder group, and two folder groups at two ends up and down unshakable in one's determination by folder
Tight bar connects, and each folder group includes high-pressure side folder and low-pressure side folder, a phase coil winding and c phase coil winding edge respectively
Long axis direction is provided with reinforcing plate, and the gap location between coil windings and iron core is provided with bamboo rod.
Further, iron core is made up of multiple laminations, and the gap location between each lamination and coil windings is respectively equipped with bamboo
Rod.
The invention has the beneficial effects as follows: the present invention is provided with on the long axis direction of a phase coil winding and b phase coil winding
Reinforcing plate, such that it is able to prevent coil windings stress the most swollen；Gap location between coil windings and iron core is provided with bamboo rod, by ferrum
Gap between inside the heart and coil windings stoppers, to reduce the degree of freedom of winding wire, it is ensured that coil windings wire occur to
During interior deformation, the support strength of internal layer, enhances the coil windings when short circuit and bears the ability of the power of inside contracting.It addition, the present invention's adds
Strong structure, it is also ensured that taking up of coil windings, can bear the counteracting force between every layer line circle, prevent the length of coil windings
Limit is loose, it is ensured that be adjacent between coil windings and iron core.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the fit structure schematic diagram between coil windings and iron core.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
As shown in Figure 1 to Figure 3, a kind of oil-filled transformer device body reinforcement structure strengthening anti-short circuit capability, including ferrum
The heart 1, this iron core 1 is made up of upper yoke 11, lower yoke 12, left stem 13, right stem stem 14 and center pillar 15, left stem 13, center pillar 15
With right stem 14 is arranged between upper yoke 11 and lower yoke 12 the most successively, unshakable in one's determination 1 be provided with oblong coil around
Group 7, coil windings 7 includes a phase coil winding, b phase coil winding and c phase coil winding, and wherein, a phase coil winding is around being located at
On left stem 13, b phase coil winding around being located on center pillar 15, c phase coil winding around being located on right stem 14, the upper end of unshakable in one's determination 1
It is respectively equipped with between a folder group, and two folder groups at two ends up and down unshakable in one's determination with lower end and is connected by clamping bar 2, each folder
Group includes that high-pressure side folder 3 and low-pressure side folder 4, a phase coil winding and c phase coil winding are provided with along long axis direction respectively and adds
Strong plate 5, the gap location between coil windings 7 and unshakable in one's determination 1 is provided with bamboo rod 6.
Furtherly, unshakable in one's determination 1 is made up of multiple laminations, and the gap location between each lamination and coil windings 7 is respectively equipped with
Bamboo rod 6.
The present invention is provided with reinforcing plate 5 on the long axis direction of a phase coil winding and b phase coil winding, such that it is able to prevent
Coil windings stress is the most swollen；Gap location between coil windings and iron core is provided with bamboo rod 6, by inside iron core and coil windings it
Between gap stopper, to reduce the degree of freedom of winding wire, it is ensured that the support of internal layer when coil windings wire is deformed inward
Intensity, enhances the coil windings when short circuit and bears the ability of the power of inside contracting, improve anti-short circuit capability.It addition, the reinforcement of the present invention
Structure, it is also ensured that taking up of coil windings, can bear the counteracting force between every layer line circle, prevents the long limit of coil windings
Loose, even if after device body vacuum drying, still ensuring that and be adjacent between coil windings and iron core.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (2)
1. the oil-filled transformer device body reinforcement structure that can strengthen anti-short circuit capability, it is characterised in that: include iron core, this ferrum
The heart is made up of upper yoke, lower yoke, left stem, right stem stem and center pillar, and left stem, center pillar and right stem are arranged the most successively
Between upper yoke and lower yoke, iron core is provided with oblong coil windings, and coil windings includes a phase coil winding, b phase line
Circle winding and c phase coil winding, wherein, a phase coil winding around being located on left stem, b phase coil winding around being located on center pillar,
C phase coil winding is around being located on right stem, and top and bottom unshakable in one's determination are respectively equipped with a folder group, and the two of two ends up and down unshakable in one's determination
Being connected by clamping bar between individual folder group, each folder group includes high-pressure side folder and low-pressure side folder, a phase coil winding and
C phase coil winding is provided with reinforcing plate along long axis direction respectively, and the gap location between coil windings and iron core is provided with bamboo rod.
The oil-filled transformer device body reinforcement structure strengthening anti-short circuit capability the most according to claim 1, its feature exists
In: iron core is made up of multiple laminations, and the gap location between each lamination and coil windings is respectively equipped with bamboo rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680761.5A CN106057441A (en) | 2016-08-18 | 2016-08-18 | Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610680761.5A CN106057441A (en) | 2016-08-18 | 2016-08-18 | Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106057441A true CN106057441A (en) | 2016-10-26 |
Family
ID=57194919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610680761.5A Pending CN106057441A (en) | 2016-08-18 | 2016-08-18 | Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106057441A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373756A (en) * | 2016-10-31 | 2017-02-01 | 山东华驰变压器股份有限公司 | Anti-short circuit transformer and preparation technology thereof |
| CN106782992A (en) * | 2017-02-28 | 2017-05-31 | 中车株洲电机有限公司 | A kind of locomotive transformer and its air gap iron-core |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5516419A (en) * | 1978-07-21 | 1980-02-05 | Hitachi Ltd | Core type transformer |
| JPH06333755A (en) * | 1993-05-20 | 1994-12-02 | Toshiba Corp | Mold coil and assembling method |
| CN2796043Y (en) * | 2005-10-17 | 2006-07-12 | 谭勇 | Platform transformer on sea |
| CN203966781U (en) * | 2014-06-30 | 2014-11-26 | 浙江绿能电力科技有限公司 | A kind of oil-filled transformer |
| 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 |
| CN205487686U (en) * | 2016-02-02 | 2016-08-17 | 丹阳市金诺电器有限公司 | Oil -immersed transformer laminar winding oil duct stay curtain convenient to equipment |
| CN205900260U (en) * | 2016-08-18 | 2017-01-18 | 吴江变压器有限公司 | Can strengthen oil -immersed transformer ware body additional strengthening of anti short circuit ability |
-
2016
- 2016-08-18 CN CN201610680761.5A patent/CN106057441A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5516419A (en) * | 1978-07-21 | 1980-02-05 | Hitachi Ltd | Core type transformer |
| JPH06333755A (en) * | 1993-05-20 | 1994-12-02 | Toshiba Corp | Mold coil and assembling method |
| CN2796043Y (en) * | 2005-10-17 | 2006-07-12 | 谭勇 | Platform transformer on sea |
| CN203966781U (en) * | 2014-06-30 | 2014-11-26 | 浙江绿能电力科技有限公司 | A kind of oil-filled transformer |
| CN205487686U (en) * | 2016-02-02 | 2016-08-17 | 丹阳市金诺电器有限公司 | Oil -immersed transformer laminar winding oil duct stay curtain convenient to equipment |
| 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 |
| CN205900260U (en) * | 2016-08-18 | 2017-01-18 | 吴江变压器有限公司 | Can strengthen oil -immersed transformer ware body additional strengthening of anti short circuit ability |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373756A (en) * | 2016-10-31 | 2017-02-01 | 山东华驰变压器股份有限公司 | Anti-short circuit transformer and preparation technology thereof |
| CN106373756B (en) * | 2016-10-31 | 2018-01-26 | 山东华驰变压器股份有限公司 | A kind of resistance to shorting transformer and its preparation technology |
| CN106782992A (en) * | 2017-02-28 | 2017-05-31 | 中车株洲电机有限公司 | A kind of locomotive transformer and its air gap iron-core |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |