CN201311827Y - Low-voltage coil for dry-type transformer - Google Patents

Low-voltage coil for dry-type transformer Download PDF

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Publication number
CN201311827Y
CN201311827Y CNU2008202021604U CN200820202160U CN201311827Y CN 201311827 Y CN201311827 Y CN 201311827Y CN U2008202021604 U CNU2008202021604 U CN U2008202021604U CN 200820202160 U CN200820202160 U CN 200820202160U CN 201311827 Y CN201311827 Y CN 201311827Y
Authority
CN
China
Prior art keywords
low
voltage coil
coil
type transformer
heat radiation
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.)
Expired - Fee Related
Application number
CNU2008202021604U
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Chinese (zh)
Inventor
罗时俊
李素英
孙济筠
罗剑
刘晓君
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.)
Guangzhou Zhongche Junfa Electrical Co. Ltd.
Original Assignee
GUANGZHOU JUNFA ELECTRIC 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 GUANGZHOU JUNFA ELECTRIC CO Ltd filed Critical GUANGZHOU JUNFA ELECTRIC CO Ltd
Priority to CNU2008202021604U priority Critical patent/CN201311827Y/en
Application granted granted Critical
Publication of CN201311827Y publication Critical patent/CN201311827Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a low-voltage coil for a dry-type transformer, belonging to the field of power transformation or power distribution, in particular to an improved structure of a low-voltage coil heat radiation air channel. The dry-type transformer comprises a coil and an iron core. The coil and the iron core are fixed via a clamping piece and a pulling plate, the coil has a high-voltage coil and a low-voltage coil, and more than 10 heat radiation air channels are uniformly arranged on the low-voltage coil along the circumferential direction at intervals. The low-voltage coil has a simple structure, improves the strength of the low-voltage coil, and can bear higher radial electromotive power. Meanwhile, the heat radiation conditions are improved so that the heat can radiate more rapidly.

Description

Low-voltage coil of dry type transformer
Technical field
The utility model low-voltage coil of dry type transformer belongs to electric power power transformation or distribution field, particularly relates to a kind of improvement structure of low-voltage coil heat radiation air flue.
Background technology
The voltage of low-voltage coil of dry type transformer is low, electric current is big, adopts paper tinsel around (Copper Foil or aluminium foil coiling) structure mostly, because low-voltage coil is between iron core and the high-tension coil, its radiating condition is relatively poor, therefore generally the heat radiation air flue need be set at low-voltage coil.A kind of is in the low-voltage coil winding process, adopts insulating material to be made as clamp bar, and certain intervals is placed a clamp bar, and clamp bar does not take out, and plays and supports and fixing effect, and form the heat radiation air flue., fixes clamp bar discontinuity or when the energising operation, low-voltage coil is subjected to radially electrodynamic effect, easily causes clamp bar to come off during as coiling because being the tensile force that produces when the low-voltage coil coiling.Another kind is that low-voltage coil adopts 3~4 shaping materials, after coil winding is fixing shaping material is extracted out, form the heat radiation air flue, this structure makes the intensity of low-voltage coil relatively poor, can not bear bigger radially electric power, have influence on the life-span of low-voltage coil of dry type transformer, bring loss to the user.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art, and a kind of intensity that improves low-voltage coil is provided, and can bear bigger radially electric power, and air passage structure is cellular-shaped simultaneously, makes heat distribute low-voltage coil of dry type transformer more fully.
The purpose of this utility model reaches by following measure, dry-type transformer is made up of coil and iron core two large divisions, coil and iron core are fixed by folder and arm-tie, coil is divided into high-tension coil and low-voltage coil, at the heat radiation air flue that along the circumferential direction evenly is provided with at interval on the low-voltage coil more than 10, during making, adopt polytetrafluoroethylmaterial material to make the air flue bar of constant slope, be placed on one by one in the winding process and offer on the mould at interval, coil forms with the epoxy resin integral cast, behind the coil cast cured explosive air flue bar is extracted.Owing to be that a plurality of heat radiation air flue of quantity along the circumferential direction evenly is set at interval, some muscle on low-voltage coil, have been formed, the intensity of low-voltage coil is improved, can play the effect of reinforcement, avoided forming because of the heat radiation air flue is few than the phenomenon that weakens low-voltage coil intensity that large space caused.
The quantity of the heat radiation air flue that the utility model along the circumferential direction evenly at interval is provided with on low-voltage coil can be selected according to the size of low-voltage coil, comparative optimization be to adopt 20~30 heat radiation air flues.
The utility model is simple in structure, and the intensity of low-voltage coil is improved, and can bear bigger radially electric power, has improved radiating condition simultaneously, and heat is drained quickly.
Description of drawings
Accompanying drawing 1 is the utility model embodiment dry-type transformer structural representation.
Accompanying drawing 2 is the utility model embodiment dry-type transformer structural representations.
Accompanying drawing 3 is low-voltage coil structural representations of the present utility model.
Accompanying drawing 4 is B-B generalized sections of accompanying drawing 3.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Shown in accompanying drawing 1, accompanying drawing 2, dry-type transformer is made up of coil 2 and iron core 1 two large divisions, coil and iron core are fixed by folder and arm-tie, coil is divided into high-tension coil and low-voltage coil, heat radiation air flue along the circumferential direction evenly being provided with at interval on the low-voltage coil more than 10 is improved the intensity of low-voltage coil, can bear bigger radially electric power, improved radiating condition simultaneously, heat is drained quickly.
Shown in accompanying drawing 3, accompanying drawing 4, the utility model along the circumferential direction evenly is provided with 28 heat radiation air flues 6 at interval on low-voltage coil 5.Adopt polytetrafluoroethylmaterial material to make the air flue bar of constant slope, be placed on one by one in the winding process and offer on the mould at interval, low-voltage coil forms with the epoxy resin integral cast, behind the coil cast cured explosive air flue bar is extracted.Owing to be that a plurality of heat radiation air flue of quantity along the circumferential direction evenly is set at interval, on low-voltage coil, form some reinforcements 4, the intensity of low-voltage coil is improved, can bear bigger radially electric power, improved radiating condition simultaneously, heat is drained quickly.

Claims (2)

1, a kind of low-voltage coil of dry type transformer is characterized in that at the heat radiation air flue that along the circumferential direction evenly is provided with at interval on the low-voltage coil more than 10.
2, low-voltage coil of dry type transformer according to claim 1 is characterized in that preferably 20~30 heat radiation air flues.
CNU2008202021604U 2008-10-16 2008-10-16 Low-voltage coil for dry-type transformer Expired - Fee Related CN201311827Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202021604U CN201311827Y (en) 2008-10-16 2008-10-16 Low-voltage coil for dry-type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202021604U CN201311827Y (en) 2008-10-16 2008-10-16 Low-voltage coil for dry-type transformer

Publications (1)

Publication Number Publication Date
CN201311827Y true CN201311827Y (en) 2009-09-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202021604U Expired - Fee Related CN201311827Y (en) 2008-10-16 2008-10-16 Low-voltage coil for dry-type transformer

Country Status (1)

Country Link
CN (1) CN201311827Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360924A (en) * 2011-08-01 2012-02-22 保定天威集团有限公司 Air duct structure for cast coil and manufacturing method for air duct structure
CN114709071A (en) * 2022-04-20 2022-07-05 嘉兴市建诚电器有限公司 High-pressure air flue strip, production device and process thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102360924A (en) * 2011-08-01 2012-02-22 保定天威集团有限公司 Air duct structure for cast coil and manufacturing method for air duct structure
CN102360924B (en) * 2011-08-01 2013-01-09 保定天威集团有限公司 Air duct structure for cast coil and manufacturing method for air duct structure
CN114709071A (en) * 2022-04-20 2022-07-05 嘉兴市建诚电器有限公司 High-pressure air flue strip, production device and process thereof
CN114709071B (en) * 2022-04-20 2023-09-22 嘉兴市建诚电器有限公司 High-pressure gas channel strip, production device and process thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Dropping-proof hook for low-voltage coil of dry type transformer

Effective date of registration: 20130715

Granted publication date: 20090916

Pledgee: Guangzhou Panyu Xinhua Village bank Limited by Share Ltd

Pledgor: Guangzhou Junfa Electric Co.,Ltd.

Registration number: 2013990000457

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20140303

Granted publication date: 20090916

Pledgee: Guangzhou Panyu Xinhua Village bank Limited by Share Ltd

Pledgor: Guangzhou Junfa Electric Co.,Ltd.

Registration number: 2013990000457

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
ASS Succession or assignment of patent right

Owner name: GUANGZHOU CSR JUNFA ELECTRIC CO., LTD.

Free format text: FORMER OWNER: GUANGZHOU JUNFA ELECTRIC CO., LTD.

Effective date: 20150515

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 511400 GUANGZHOU, GUANGDONG PROVINCE TO: 511447 GUANGZHOU, GUANGDONG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20150515

Address after: Huashan road Panyu District town Guangzhou city Guangdong province 511447 stone floor No. 15 (C workshop)

Patentee after: South, Guangzhou Che Junfa Electric Applicance Co., Ltd

Address before: 511400 Guangdong city of Guangzhou province Panyu District City Bridge Street South Street No. 3

Patentee before: Guangzhou Junfa Electric Co.,Ltd.

C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: Huashan road Panyu District town Guangzhou city Guangdong province 511447 stone floor No. 15 (C workshop)

Patentee after: Guangzhou Zhongche Junfa Electrical Co. Ltd.

Address before: Huashan road Panyu District town Guangzhou city Guangdong province 511447 stone floor No. 15 (C workshop)

Patentee before: South, Guangzhou Che Junfa Electric Applicance Co., Ltd

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090916

Termination date: 20171016

CF01 Termination of patent right due to non-payment of annual fee