CN102679720A - Sintering furnace of capacitive transformer coil - Google Patents
Sintering furnace of capacitive transformer coil Download PDFInfo
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- CN102679720A CN102679720A CN2012101482708A CN201210148270A CN102679720A CN 102679720 A CN102679720 A CN 102679720A CN 2012101482708 A CN2012101482708 A CN 2012101482708A CN 201210148270 A CN201210148270 A CN 201210148270A CN 102679720 A CN102679720 A CN 102679720A
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- heating furnace
- furnace body
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- heating
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Abstract
The invention discloses a sintering furnace of a capacitive transformer coil, comprising a heating furnace body and a furnace gate, and further comprising a pressing furnace gate device, a heating furnace disc, a vacuumizing device, a nitrogen inflating device, a thermoelectric couple temperature measuring device and an electrode lead wire, wherein the heating furnace disc is arranged at the bottom in the heating furnace body; the heating furnace body is provided with the electrode lead wire; the vacuumizing device is communicated with the heating furnace body; the nitrogen inflating device is communicated with the heating furnace body; and the heating furnace body is provided with the thermoelectric couple temperature measuring device. The sintering furnace has the beneficial effects that the sufficient air discharging between insulating layers of a capacitive coil and the whole solidification of the capacitive coil can be guaranteed through machining a capacitive transformer coil winding; and a transformer manufactured by the capacitive coil winding has a large capacity and high voltage resistance and partial discharge resistance. The sintering furnace of the capacitive transformer coil is convenient to operate and has a simple structure.
Description
Technical field
The present invention relates to a kind of stove of processing the CVT coil windings; Be more particularly to a kind of stove that makes the interlayer exhaust of CVT coil insulation and coil is solidified, belong to and to carry out the eddy current heating and can carry out the stove field that sintering also can make the coil integrally curing.
Background technology
At present; In power system conventional transformer manufacturing; The mode of oil immersion or the mode of poured with epoxy resin are taked in the making of transformer more; Be about to the good transformer of coiling once, Secondary Winding (or claiming high and low pressure coil) the wrapping oil tank of transformer of putting into sealing after handling vacuumizes and immersion oil is handled, manufacture into oil-filled transformer (being called for short oil becomes) or transformer that coiling is good once, Secondary Winding (or claiming high and low pressure coil) puts into semi-enclosed framedly respectively, put into again in the vacuum solidification heating furnace; Dry-type transformer (be called for short to do and become) is manufactured in the processing that vacuumizes and be heating and curing of injection ring epoxy resins.Because what they adopted all is the manufacturing processing technic of single line winding; Its layer insulation requires with respect to novel CVT; Its layer insulation is thicker, and resistance to pressure is prone to hold reach with anti-office exoergic force rate, also relatively easy many of the manufacturing process of coil; Requirement to solidifying heating furnice is also oversimplified relatively, can realize the manufacturing process of coil through solidifying heating furnice.Yet; Manufacture process requirement for novel CVT; The conventional transformer solidifying heating furnice of normally used poured with epoxy resin and processing technology are difficult to reach the technological requirement in the manufacturing process of CVT; Because the dielectric film between the CVT metal forming is thinner, layer insulation coiling very tight in winding process.Therefore, the air between layer insulation is difficult to clear air with traditional production process and solidifying heating furnice, is easy to cause between paper tinsel dielectric voltage withstand decline drawn game to put and can not pass through, and produces a large amount of to scrap in other words that the manufacturing of CVT can't realize at all.
Summary of the invention the objective of the invention is to overcome above deficiency, provides: a kind of CVT coil sintering furnace, it can guarantee the abundant exhaust of CVT coil insulation interlayer and the integrally curing of slab winding.
A kind of CVT coil sintering furnace comprises: heating furnace body, fire door; Also comprise: compress stove gate device, heating stone or metal plate for standing a stove on as a precaution against fire, vacuum extractor, inflated with nitrogen device, thermocouple temperature measuring apparatus, contact conductor; Bottom in heating furnace body is provided with the heating stone or metal plate for standing a stove on as a precaution against fire, on heating furnace body, is provided with contact conductor, and vacuum extractor is connected with heating furnace body, and the inflated with nitrogen device is connected with heating furnace body, on heating furnace body, is provided with thermocouple temperature measuring apparatus.
Also comprise: safety valve is provided with safety valve at the top of heating furnace body.
Also comprise: auto-transformer, auto-transformer is connected with contact conductor.
Also comprise: electric control cabinet, electric control cabinet is connected with vacuum extractor, electric control cabinet with compress stove gate device and be connected, electric control cabinet is connected with the heating stone or metal plate for standing a stove on as a precaution against fire, electric control cabinet is connected with auto-transformer.
Described vacuum extractor comprises vacuum pumping pump.
The invention has the beneficial effects as follows:
The application of the invention processing CVT coil windings can guarantee the abundant exhaust and the integrally curing of slab winding between the slab winding insulating barrier, the transformer capacitance big and the resistance to pressure and anti-innings of putting a property height that manufacture with this slab winding winding.The present invention is easy to operate, and is simple in structure.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is a right view of the present invention
The specific embodiment
Below in conjunction with accompanying drawing the present invention is elaborated
Since the capacitance characteristic of CVT promptly once, the production technology characteristic of secondary coil winding parallel connection coiling; Make according to the winding method of capacitor, require the interfloor distance of winding and Secondary Winding two interpolars of transformer corresponding less, and interfloor distance is more little, capacitance is big more, and the structure of transformer is also just accordingly more little.But, also require the layer insulation resistance to pressure of two interpolars simultaneously and resist office's putting property height.
Because the characteristic requirements of electric capacity, two die openings are big more from more little capacitance, and the area at the two poles of the earth high capacitance more is big more; With opposite, the layer insulation of coil winding two interpolars of CVT is thick more to be that interfloor distance is big more, and resistance to pressure is also just high more with anti-innings putting property; Both are conflicting.But in the manufacturing of transformer, the resistance to pressure of interpolar whether contains air with interlayer dielectic again with anti-innings putting property and the insulating materials insulation characterisitic has very big relation.
Can make it bigger capacitance in order to resolve CVT, can make it to have the technical problem of higher resistance to pressure and putting property of anti-office again, at first start with from the layer insulation of CVT.Accomplish during production and processing CVT coil windings:
1, the thickness of insulating layer between the CVT coil windings makes it can bear under the withstand voltage situation, more Bao Yuehao;
2, make extruding exhaust of the dielectric film between insulating barrier and vacuumizing and exhausting between paper tinsel;
3, through first heating CVT coil windings, the cooling coil winding makes dielectric film produce self-adhesion to solidify again.
So: the insulating materials of CVT interlayer adopts high temperature resistant, high pressure resistant and vertically shrinks the polyester membrane material; Simultaneously, can accomplish above production requirement with the present invention.The application of the invention processing CVT coil windings can guarantee the abundant exhaust and the integrally curing of slab winding between the slab winding insulating barrier, the transformer capacitance big and the resistance to pressure and anti-innings of putting a property height that manufacture with this slab winding winding.
A kind of CVT coil sintering furnace comprises: heating furnace body 7, fire door 11; Also comprise: compress stove gate device 5, heating stone or metal plate for standing a stove on as a precaution against fire 9, vacuum extractor 10, inflated with nitrogen device, thermocouple temperature measuring apparatus 1, contact conductor 4; Bottom in heating furnace body 7 is provided with heating stone or metal plate for standing a stove on as a precaution against fire 9, on heating furnace body 7, is provided with contact conductor 4, and vacuum extractor 10 is connected with heating furnace body 7, and the inflated with nitrogen device is connected with heating furnace body 7, on heating furnace body 7, is provided with thermocouple temperature measuring apparatus 1.
Also comprise: safety valve 6 is provided with safety valve 6 at the top of heating furnace body 7.
Also comprise: auto-transformer 3, auto-transformer 3 is connected with contact conductor 4.
Also comprise: electric control cabinet 2, electric control cabinet 2 is connected with vacuum extractor 10, electric control cabinet 2 with compress stove gate device 5 and be connected, electric control cabinet 2 is connected with heating stone or metal plate for standing a stove on as a precaution against fire 9, electric control cabinet 2 is connected with auto-transformer 3.
Described vacuum extractor 10 comprises vacuum pumping pump.
Thermocouple temperature measuring apparatus 1 can be used for detecting keep watch in the heating furnace body 7, mould 8 inside and outside about, the temperature of heating stone or metal plate for standing a stove on as a precaution against fire 9; Can the thermocouple of the upper and lower internal-external that is fixed on mould 8 be connected with thermocouple temperature measuring apparatus 1 on the heating furnace body 7.
Electric control cabinet 2 is mainly used in control vacuum extractor 10 switches, control compresses stove gate device 5, the heating-up temperature of control heating stone or metal plate for standing a stove on as a precaution against fire 9, control auto-transformer 3.
Auto-transformer 3 is when the mould eddy current heats, the energy to be exported, to contact conductor 4 power supplies; Can the lead-in wire on the coil in contact conductor on the heating furnace body 74 and the mould 8 be connected in series.
Safety valve 6 effect is: when the inflated with nitrogen device in heating furnace body 7 during inflated with nitrogen, when inflated with nitrogen pressure surpassed 4Kg/CM2, safety valve 6 was opened automatically.
The process of using the present invention to process the CVT coil windings is:
1, at first opens the fire door 11 of heating furnace body 7; CVT coil in need heated mold 8 and the mould 8 is put into above the heating stone or metal plate for standing a stove on as a precaution against fire 9 of heating furnace body 7 inner bottom parts; Lead-in wire on the coil in contact conductor on the heating furnace body 74 and the mould 8 is connected in series; The thermocouple that will be fixed on the upper and lower internal-external of mould 8 again is connected with thermocouple temperature measuring apparatus 1 on the heating furnace body 7; After connect finishing, start and compress stove gate device 5 with fire door 11 rotations and shut and compress fire door 11 again.
2, through 9 heating of heating stone or metal plate for standing a stove on as a precaution against fire, heat is delivered to transformer coli winding mould 8 bottoms, makes the upper and lower formation gradient temperature difference of mould 8; After the coil windings energising; Mould 8 surfaces of coil windings produce eddy current magnetism; Make the metal material surface of mould 8 form the magnetic resistance heating, form the eddy current heating, thereby carry out mould 8 lower heating and eddy current heat treated simultaneously; And then the insulating materials of CVT interlayer receives thermal contraction earlier at the mould heart of mould 8 bottoms and mould 8; Insulating materials adopts high temperature resistant, high pressure resistant and vertically shrinks the polyester membrane material, utilizes the characteristic of vertical contraction of CVT coil windings interlayer dielectic, and the interlayer dielectic between the CVT coil windings is extruded the air in the CVT coil windings interlayer dielectic by thermal contraction; The interlayer dielectic heating back coil method of slab winding produces and expands, and extrusion die 8 overcoats enrich; Close heating stone or metal plate for standing a stove on as a precaution against fire 9 power supplys, stop heating, vacuumize processing with 10 pairs of heating furnace bodies 7 of vacuum extractor again, the air in the coil is discharged.
3, the method that continues to utilize the eddy current heating then is to coil electricity in the mould 8, make mould 8 inside and outside produce magnetic fields and produce heat mould 8 is evenly heated, utilize the temperature of mould 8 metal surfaces to be delivered on the CVT coil windings; Make mould about in the of 8 temperature-difference produce the equalizer, guarantee the even heat of coil in the mould 8, insulating materials is carried out sintering; Insulating materials produces self-adhesion; Close the eddy current heating current when evenly being heated to the coil sintering temperature, close vacuum extractor 10, with the inflated with nitrogen device heating furnace body 7, mould 8 and coil are carried out the inflated with nitrogen cooling curing rapidly again and handle; Prevent that the insulating materials vitrifying from taking place, thus the slab winding integrally curing.
4, powered-down after heating furnace body 7 cooling, is opened fire door 11, will be fixed on thermocouple and the thermocouple temperature measuring apparatus of mould inside and outside 8 about again and open in 1 minute; Lead-in wire on the coil in contact conductor on the heating furnace body 74 and the mould is separated, mould 8 is shifted out, finish.
In sum; The application of the invention processing CVT coil windings; Abundant exhaust and the integrally curing of slab winding between the slab winding insulating barrier can have been guaranteed, the transformer capacitance big and the resistance to pressure and anti-office putting a property height that manufacture with this slab winding winding.The present invention is easy to operate, and is simple in structure.
Claims (5)
1. a CVT coil sintering furnace comprises: heating furnace body, fire door; It is characterized in that: also comprise: compress stove gate device, heating stone or metal plate for standing a stove on as a precaution against fire, vacuum extractor, inflated with nitrogen device, thermocouple temperature measuring apparatus, contact conductor; Bottom in heating furnace body is provided with the heating stone or metal plate for standing a stove on as a precaution against fire, on heating furnace body, is provided with contact conductor, and vacuum extractor is connected with heating furnace body, and the inflated with nitrogen device is connected with heating furnace body, on heating furnace body, is provided with thermocouple temperature measuring apparatus.
2. a kind of CVT coil sintering furnace according to claim 1, it is characterized in that: also comprise: safety valve is provided with safety valve at the top of heating furnace body.
3. a kind of CVT coil sintering furnace according to claim 1, it is characterized in that: also comprise: auto-transformer, auto-transformer is connected with contact conductor.
4. a kind of CVT coil sintering furnace according to claim 1; It is characterized in that: also comprise: electric control cabinet; Electric control cabinet is connected with vacuum extractor; Electric control cabinet with compress stove gate device and be connected, electric control cabinet is connected with the heating stone or metal plate for standing a stove on as a precaution against fire, electric control cabinet is connected with auto-transformer.
5. a kind of CVT coil sintering furnace according to claim 1, it is characterized in that: described vacuum extractor comprises vacuum pumping pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148270.8A CN102679720B (en) | 2012-05-13 | 2012-05-13 | Sintering furnace of capacitive transformer coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148270.8A CN102679720B (en) | 2012-05-13 | 2012-05-13 | Sintering furnace of capacitive transformer coil |
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| CN102679720A true CN102679720A (en) | 2012-09-19 |
| CN102679720B CN102679720B (en) | 2014-11-05 |
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| CN201210148270.8A Active CN102679720B (en) | 2012-05-13 | 2012-05-13 | Sintering furnace of capacitive transformer coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903499A (en) * | 2012-09-27 | 2013-01-30 | 宜兴市兴益特种变压器有限公司 | Transformer of ingot furnace |
| CN114915125A (en) * | 2022-06-13 | 2022-08-16 | 瑞昌市森奥达科技有限公司 | Low-voltage large-current motor stator coil heating device |
Citations (6)
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| FR2701096A1 (en) * | 1993-02-04 | 1994-08-05 | Bmi Fours Ind | High speed vacuum heat treatment furnace of the cooling gas stream. |
| WO2009022590A1 (en) * | 2007-08-10 | 2009-02-19 | Toyota Jidosha Kabushiki Kaisha | Heating furnace and heating method employed by heating furnace |
| CN101788226A (en) * | 2010-03-29 | 2010-07-28 | 株洲钻石硬质合金设备有限公司 | Pressure sintering furnace |
| CN101826393A (en) * | 2010-04-15 | 2010-09-08 | 上海凯利电器厂有限公司 | Vacuum pouring method for epoxy resin |
| CN202193422U (en) * | 2011-08-12 | 2012-04-18 | 安徽正果电气技术有限公司 | Dry type transformer coil rapid-processing and transfer system and equipment |
| CN202205572U (en) * | 2011-08-30 | 2012-04-25 | 青岛变压器集团有限公司 | Curing furnace special for open dry-type transformer |
-
2012
- 2012-05-13 CN CN201210148270.8A patent/CN102679720B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2701096A1 (en) * | 1993-02-04 | 1994-08-05 | Bmi Fours Ind | High speed vacuum heat treatment furnace of the cooling gas stream. |
| WO2009022590A1 (en) * | 2007-08-10 | 2009-02-19 | Toyota Jidosha Kabushiki Kaisha | Heating furnace and heating method employed by heating furnace |
| CN101788226A (en) * | 2010-03-29 | 2010-07-28 | 株洲钻石硬质合金设备有限公司 | Pressure sintering furnace |
| CN101826393A (en) * | 2010-04-15 | 2010-09-08 | 上海凯利电器厂有限公司 | Vacuum pouring method for epoxy resin |
| CN202193422U (en) * | 2011-08-12 | 2012-04-18 | 安徽正果电气技术有限公司 | Dry type transformer coil rapid-processing and transfer system and equipment |
| CN202205572U (en) * | 2011-08-30 | 2012-04-25 | 青岛变压器集团有限公司 | Curing furnace special for open dry-type transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903499A (en) * | 2012-09-27 | 2013-01-30 | 宜兴市兴益特种变压器有限公司 | Transformer of ingot furnace |
| CN114915125A (en) * | 2022-06-13 | 2022-08-16 | 瑞昌市森奥达科技有限公司 | Low-voltage large-current motor stator coil heating device |
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| CN102679720B (en) | 2014-11-05 |
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Effective date of registration: 20161026 Address after: 212211, 7, Zhenjiang New District, Jiangsu, Zhenjiang Patentee after: Wang Yuelin Address before: 212000, 7, Zhenjiang New District, Jiangsu, Zhenjiang Patentee before: Jiangsu Uonone Electric Automation Co.,Ltd. |
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Effective date of registration: 20201118 Address after: Block b-1-5-2, chonglan Industrial Park, Dongxing City, Fangchenggang City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Dongxing Jianye kitchenware Manufacturing Co., Ltd Address before: 212211, 7, Zhenjiang New District, Jiangsu, Zhenjiang Patentee before: Wang Yuelin |
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