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 PDF

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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.)
Pending
Application number
CN201610680761.5A
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Chinese (zh)
Inventor
周通吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wujiang Transformer Co Ltd
Original Assignee
Wujiang Transformer Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wujiang Transformer Co Ltd filed Critical Wujiang Transformer Co Ltd
Priority to CN201610680761.5A priority Critical patent/CN106057441A/en
Publication of CN106057441A publication Critical patent/CN106057441A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/245Magnetic cores made from sheets, e.g. grain-oriented
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266Fastening or mounting the core on casing or support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening 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

A kind of oil-filled transformer device body reinforcement structure strengthening anti-short circuit capability
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.
CN201610680761.5A 2016-08-18 2016-08-18 Oil-immersed transformer body reinforcement structure capable of enhancing short-circuit withstand ability Pending CN106057441A (en)

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

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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Application publication date: 20161026