CN105261463A - Oil-immersed type transformer coil - Google Patents

Oil-immersed type transformer coil Download PDF

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Publication number
CN105261463A
CN105261463A CN201510806268.9A CN201510806268A CN105261463A CN 105261463 A CN105261463 A CN 105261463A CN 201510806268 A CN201510806268 A CN 201510806268A CN 105261463 A CN105261463 A CN 105261463A
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CN
China
Prior art keywords
coil
oil
low
insulation
voltage
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
CN201510806268.9A
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Chinese (zh)
Inventor
赵庆春
穆淑萍
金德胜
刘井卫
范克科
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.)
Ji'nan Qinghe Electric Co Ltd
Original Assignee
Ji'nan Qinghe 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 Ji'nan Qinghe Electric Co Ltd filed Critical Ji'nan Qinghe Electric Co Ltd
Priority to CN201510806268.9A priority Critical patent/CN105261463A/en
Publication of CN105261463A publication Critical patent/CN105261463A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an oil-immersed type transformer coil. The oil-immersed type transformer coil comprises a coil body; an oil-immersed insulated hard rubber cylinder is fixedly arranged at the inner side of the coil body; the insulated hard rubber cylinder is fixedly connected with a low-voltage coil arranged outside the insulated hard rubber cylinder; a high-voltage coil is arranged outside the low-voltage coil; a gap is reserved between the low-voltage coil and the high-voltage coil; furthermore, main empty path insulation is arranged in the gap; the low-voltage coil is fixedly connected with the high-voltage coil through the main empty path insulation; the middles of the low-voltage coil and the high-voltage coil are each provided with an interlayer; furthermore, a piece of GS insulated adhesive dispensing paper is arranged in the interlayer; and the end parts of the low-voltage coil and the high-voltage coil are each reserved with a gap. The oil-immersed type transformer coil disclosed by the invention has the insulation effect while being operated in oil for a long time and also has strong mechanical support to the coil; therefore, the insulation and isolation effects can be realized; strength requirements resisting sudden short circuits can be satisfied; and the coil can be warmed and cured into a whole after being winded.

Description

A kind of oil-filled transformer coil
Technical field
The present invention relates to transformer coil manufacturing technology field, be specially a kind of oil-filled transformer coil.
Background technology
Transformer utilizes the principle of electromagnetic induction to change the device of alternating voltage, main member is primary coil, secondary coil and magnetic core, circuit symbol commonly uses the beginning that T is used as numbering, and major function has: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing etc.Can be divided into by purposes: power transformer and special transformer, such as electric furnace change, rectification change, power frequency testing transformer, voltage regulator, mining change, audio frequency transformer, intermediate frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronic transformer, reactor, instrument transformer etc.
Coil is needed to operate inside transformer.Divide by the number of phases: (1) single-phase transformer: for single-phase load and three phase transformers.(2) three-phase transformer: for the ascending, descending voltage of three-phase system.Divide by measure: the coil of miniature transformer is generally with the circular copper wire with insulation, and large-scale transformer is then with the flat type copper wire with insulating barrier.
There is following shortcoming in conventional coil, affects the anti-short circuit capability of transformer:
1, inner side adopts Xiang Shiyi millimeter cardboard to do liner, and cardboard is soft after oil immersion bubble, does not have mechanical strength, can only play insulating effect, do not have mechanical support to coil in oil during long-term operation.
2, coil interlayer insulating paper adopts multilayer 0. 08 millimeters of some gummed papers as insulation, and only play insulation buffer action, organically do not combined together by coil, coil overall mechanical strength is little.
3, end winding offset plate filler strip adopts offset plate filler strip, not as a whole with coil compound, and only play insulation buffer action, organically do not combined together by coil, coil overall mechanical strength is little.
Summary of the invention
The object of the present invention is to provide a kind of oil-filled transformer coil, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme: a kind of oil-filled transformer coil, comprise coil body, the inner side of described coil body is fixedly installed the insulation ebonite cylinder of useful oil immersion, described insulation ebonite cylinder and the low-voltage coil be provided with outside it are fixedly linked, the high-tension coil that the outside of described low-voltage coil is provided with, gap is left between described low-voltage coil and high-tension coil, and be provided with main empty path insulation in gap, described low-voltage coil is fixedly linked with high-tension coil by main empty path insulation, the interior middle part of described low-voltage coil and high-tension coil is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper, gap is all left in the end of described low-voltage coil and high-tension coil, and be filled with the glass fiber bundle of pre-epoxy resin dipping in gap, glass fiber bundle is all run through and the exposed two sides in coil body in the two ends of described GS insulating point gummed paper.
Preferably, described GS insulating point gummed paper comprises the soft complex of semi-solid preparation.
Preferably, complex is bonding forms by the modification gluing body in form diamond checks and electric insulation softness for the soft complex of described semi-solid preparation.
Preferably, described GS insulating point gummed paper also comprises the insulating paper of multilayer, and described insulating paper is positioned at the outer surface of the soft complex of semi-solid preparation, and insulating paper is bonding with modification gluing body and the soft complex of electric insulation respectively.
Preferably, the outer surface of described GS insulating point gummed paper is provided with antiskid thread.
Preferably, the thickness of described insulation ebonite cylinder is 12 millimeters.
Preferably, the end of described low-voltage coil and high-tension coil is also arranged with safety guard.
Preferably, the length of described glass fiber bundle is two millimeters.
Compared with prior art, the present invention has following beneficial effect:
(1), oil-filled transformer coil of the present invention, inner side adopts item 12 millimeters insulation ebonite cylinder to do liner, and offset plate is still hard after oil immersion bubble, has enough mechanical strength support coils, in oil, not only can play insulating effect during long-term operation, to coil, also there is powerful mechanical support.
(2), oil-filled transformer coil of the present invention, coil interlayer insulating paper adopts multilayer GS insulating point gummed paper as insulation, insulation buffer action can be played, coil organically can be combined together again, coil overall mechanical strength is large, the strength demand of anti-sudden short circuit can be met, GS insulating point gummed paper comprises the soft complex of semi-solid preparation, complex is bonding forms by the modification gluing body in form diamond checks and electric insulation softness for the soft complex of semi-solid preparation, during use, its coat is in coil dry run, fusing is started when uniform temperature, produce adhesive attraction, solidification is started again along with temperature raises, the neighboring layers of winding is made to be bonded into a solid unit reliably, the displacement of winding each layer when the bonding strength of epoxy resin is enough to prevent short circuit, thus ensure that the machinery that winding insulation structure is long-term and electric property.
(3), oil-filled transformer coil of the present invention, the glass fiber bundle of the outer first coiling two millimeters of insulation ebonite cylinder pre-epoxy resin dipping afterwards, end winding is also filled with the glass fiber bundle of pre-epoxy resin dipping, the glass fiber bundle coiling of two millimeters of pre-epoxy resin dippings afterwards of coil outermost layer, as a whole by heating cure after coil winding, there is the mechanical strength of similar fiberglass.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil-filled transformer coil of the present invention;
Fig. 2 is the part-structure schematic diagram of the GS insulating point gummed paper of oil-filled transformer coil of the present invention.
In figure: 1 coil body, 2 insulation ebonite cylinders, 3 low-voltage coils, 4 high-tension coils, 5 main empty path insulation, 6GS insulating point gummed paper, the soft complex of 61 semi-solid preparations, 611 modification gluing bodies, 612 electric insulations soft complex, 62 insulating papers, 7 glass fiber bundles.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-2, the invention provides a kind of technical scheme: a kind of oil-filled transformer coil, comprise coil body 1, the inner side of coil body 1 is fixedly installed the insulation ebonite cylinder 2 of useful oil immersion, the thickness of insulation ebonite cylinder 2 is 12 millimeters, insulation ebonite cylinder 2 and the low-voltage coil 3 be provided with outside it are fixedly linked, the high-tension coil 4 that the outside of low-voltage coil 3 is provided with, gap is left between low-voltage coil 3 and high-tension coil 4, and be provided with main empty path insulation 5 in gap, low-voltage coil 3 is fixedly linked with high-tension coil 4 by main empty path insulation 5, the interior middle part of low-voltage coil 3 and high-tension coil 4 is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper 6, GS insulating point gummed paper 6 comprises the soft complex 61 of semi-solid preparation, complex 612 is bonding forms by the modification gluing body 611 in form diamond checks and electric insulation softness for the soft complex 61 of semi-solid preparation, the outer surface of GS insulating point gummed paper 6 is provided with antiskid thread, GS insulating point gummed paper 6 is made up of the insulating paper 62 of multilayer, insulating paper 62 is positioned at the outer surface of the soft complex 61 of semi-solid preparation, and insulating paper 62 is bonding with modification gluing body 611 and the soft complex 612 of electric insulation respectively, gap is all left in the end of low-voltage coil 3 and high-tension coil 4, and be filled with the glass fiber bundle 7 of pre-epoxy resin dipping in gap, glass fiber bundle 7 is all run through and the exposed two sides in coil body 1 in the two ends of GS insulating point gummed paper 6, the length of glass fiber bundle 7 is two millimeters, the end of low-voltage coil 3 and high-tension coil 4 is also arranged with safety guard.
During use: this oil-filled transformer coil, inner side adopts item 12 millimeters insulation ebonite cylinder 2 to do liner, offset plate is still hard after oil immersion bubble, there is enough mechanical strengths and support low-voltage coil 3 and high-tension coil 4, not only insulating effect can be played during long-term operation in oil, to low-voltage coil 3 and high-tension coil 4, also there is powerful mechanical support, low-voltage coil 3 and high-tension coil 4 layer insulation paper adopt multilayer GS insulating point gummed paper 6 as insulation, insulation buffer action can be played, coil organically can be combined together again, low-voltage coil 3 and high-tension coil 4 overall mechanical strength large, the strength demand of anti-sudden short circuit can be met.GS insulating point gummed paper 6 comprises the soft complex 61 of semi-solid preparation, complex 612 is bonding forms by the modification gluing body 611 in form diamond checks and electric insulation softness for the soft complex 61 of semi-solid preparation, GS insulating point gummed paper 6 also comprises the insulating paper 62 of multilayer, insulating paper 62 is positioned at the outer surface of the soft complex 61 of semi-solid preparation, and insulating paper 62 is bonding with modification gluing body 611 and the soft complex 612 of electric insulation respectively, during use, its coat is in low-voltage coil 3 and high-tension coil 4 dry run, fusing is started when uniform temperature, produce adhesive attraction, solidification is started again along with temperature raises, the neighboring layers of winding is made to be bonded into a solid unit reliably, the displacement of winding each layer when the bonding strength of epoxy resin is enough to prevent short circuit, thus ensure that the machinery that winding insulation structure is long-term and electric property, the glass fiber bundle 7 of the outer first coiling two millimeters of insulation ebonite cylinder 2 pre-epoxy resin dipping afterwards, low-voltage coil 3 and high-tension coil 4 end are all also filled with the glass fiber bundle 7 of pre-epoxy resin dipping, glass fiber bundle 7 coiling of two millimeters of pre-epoxy resin dippings afterwards of low-voltage coil 3 and high-tension coil 4 outermost layer, as a whole by heating cure after low-voltage coil 3 and high-tension coil 4 coiling, there is the mechanical strength of similar fiberglass.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.

Claims (8)

1. an oil-filled transformer coil, comprise coil body (1), it is characterized in that: the inner side of described coil body (1) is fixedly installed the insulation ebonite cylinder (2) of useful oil immersion, described insulation ebonite cylinder (2) and the low-voltage coil (3) be provided with outside it are fixedly linked, the high-tension coil (4) that the outside of described low-voltage coil (3) is provided with, gap is left between described low-voltage coil (3) and high-tension coil (4), and be provided with main empty path insulation (5) in gap, described low-voltage coil (3) is fixedly linked by main empty path insulation (5) and high-tension coil (4), the interior middle part of described low-voltage coil (3) and high-tension coil (4) is provided with interlayer, and the inside of interlayer is provided with GS insulating point gummed paper (6), gap is all left in the end of described low-voltage coil (3) and high-tension coil (4), and be filled with the glass fiber bundle (7) of pre-epoxy resin dipping in gap, glass fiber bundle (7) is all run through and the exposed two sides in coil body (1) in the two ends of described GS insulating point gummed paper (6).
2. a kind of oil-filled transformer coil according to claim 1, is characterized in that: described GS insulating point gummed paper (6) comprises the soft complex (61) of semi-solid preparation.
3. a kind of oil-filled transformer coil according to claim 2, is characterized in that: the soft complex (61) of described semi-solid preparation forms by the soft complex (612) of the modification gluing body (611) in form diamond checks and electric insulation is bonding.
4. a kind of oil-filled transformer coil according to claim 1, it is characterized in that: described GS insulating point gummed paper (6) also comprises the insulating paper (62) of multilayer, described insulating paper (62) is positioned at the outer surface of the soft complex (61) of semi-solid preparation, and insulating paper (62) is bonding with modification gluing body (611) and the soft complex (612) of electric insulation respectively.
5. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the outer surface of described GS insulating point gummed paper (6) is provided with antiskid thread.
6. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the thickness of described insulation ebonite cylinder (2) is 12 millimeters.
7. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the end of described low-voltage coil (3) and high-tension coil (4) is also arranged with safety guard.
8. a kind of oil-filled transformer coil according to claim 1, is characterized in that: the length of described glass fiber bundle (7) is two millimeters.
CN201510806268.9A 2015-11-20 2015-11-20 Oil-immersed type transformer coil Pending CN105261463A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510806268.9A CN105261463A (en) 2015-11-20 2015-11-20 Oil-immersed type transformer coil

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106098330A (en) * 2016-08-18 2016-11-09 宁波新胜中压电器有限公司 The winding construction of transformator and device body and the method producing this winding construction
CN112071631A (en) * 2020-08-25 2020-12-11 苏州麦格尼特新技术有限公司 Method for winding saddle-shaped coil based on semi-cured epoxy ultrasonic rapid bonding

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974609A (en) * 1982-10-20 1984-04-27 Moriyama Kogyo Kk High voltage transformer
CN201904192U (en) * 2010-12-13 2011-07-20 上海南桥变压器有限责任公司 Rectangular coil of transformer
CN103247435A (en) * 2012-02-13 2013-08-14 新华都特种电气股份有限公司 Wound coil structure and processing method
CN203338954U (en) * 2013-07-16 2013-12-11 济南银河电气有限公司 Coil insulation structure of oil-immersed transformer
CN203423043U (en) * 2013-08-19 2014-02-05 上海南桥变压器有限责任公司 High-strength rectangular inner winding supporting framework
CN203826184U (en) * 2014-05-19 2014-09-10 镇江天力变压器有限公司 Main insulation structure of oil-immersed transformer
CN205080992U (en) * 2015-11-20 2016-03-09 济南清河电气有限公司 Coil for oil -immersed transformer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974609A (en) * 1982-10-20 1984-04-27 Moriyama Kogyo Kk High voltage transformer
CN201904192U (en) * 2010-12-13 2011-07-20 上海南桥变压器有限责任公司 Rectangular coil of transformer
CN103247435A (en) * 2012-02-13 2013-08-14 新华都特种电气股份有限公司 Wound coil structure and processing method
CN203338954U (en) * 2013-07-16 2013-12-11 济南银河电气有限公司 Coil insulation structure of oil-immersed transformer
CN203423043U (en) * 2013-08-19 2014-02-05 上海南桥变压器有限责任公司 High-strength rectangular inner winding supporting framework
CN203826184U (en) * 2014-05-19 2014-09-10 镇江天力变压器有限公司 Main insulation structure of oil-immersed transformer
CN205080992U (en) * 2015-11-20 2016-03-09 济南清河电气有限公司 Coil for oil -immersed transformer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
桑会凯: "风力发电箱式变压器的节材设计", 《变压器》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106098330A (en) * 2016-08-18 2016-11-09 宁波新胜中压电器有限公司 The winding construction of transformator and device body and the method producing this winding construction
CN112071631A (en) * 2020-08-25 2020-12-11 苏州麦格尼特新技术有限公司 Method for winding saddle-shaped coil based on semi-cured epoxy ultrasonic rapid bonding

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Application publication date: 20160120