CN1060580C - Dry transformer of fire-proof epoxy resin - Google Patents
Dry transformer of fire-proof epoxy resin Download PDFInfo
- Publication number
- CN1060580C CN1060580C CN96115624A CN96115624A CN1060580C CN 1060580 C CN1060580 C CN 1060580C CN 96115624 A CN96115624 A CN 96115624A CN 96115624 A CN96115624 A CN 96115624A CN 1060580 C CN1060580 C CN 1060580C
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- epoxy resin
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Abstract
The present invention provides a dry-type transformer with fire-retardant epoxy resin, which is composed of an iron core, a high-voltage winding and a low-voltage winding, a filler, a resin pad, a pull plate, a high-voltage upper clamping plate and a high-voltage lower clamping plate, a suspension ring and pins, wherein the low-voltage winding is arranged on the iron core; the pull plate is fixed to both sides of the iron core by the high-voltage upper clamping plate and the high-voltage lower clamping plate. Compared with the prior art, the dry-type transformer with fire-retardant epoxy resin has the characteristics of reasonable design, high safety and reliability, electrical properties conforming to the international UL standard, flame retardance reaching the VO-level standard, etc., and consequently, is well deserved to be popularized.
Description
The present invention relates to a kind of manufacture method of power transformer, specifically a kind of dry transformer of fire-proof epoxy resin.
Mostly employed power transformer is oil-filled transformer in the existing power project of transmitting and converting electricity, with transformer oil as coolant, the deficiency of its existence is that the volume of transformer is big, transformer oil volatilizees excessive contaminated environment easily, explosive inflammable not easy-maintaining, thus, environmentally safe little, working service by volume easily dry-type transformer substitute.But mostly the employed pours of the dry-type transformer of prior art is to have filler pours and non-anti-flammability pours, be to fill out a large amount of inorganic matters such as calcium carbonate, magnesium carbonate, silica etc. in the employed pours, the deficiency that transformer in use exists is that big, the anti-fire resistance of noise is poor, transformer coil once the overload or short circuit catch fire, pours also together participates in burning, up to transformer is burnt, cause heavy losses.
The objective of the invention is to overcome the deficiency that above-mentioned prior art exists, provide that a kind of volume is little, long service life, be easy to maintaining, free from environmental pollution, fire resistance good, mechanical strength is high, its electric property meets international UL standard, fire resistance reaches the dry transformer of fire-proof epoxy resin of VO level.
Dry transformer of fire-proof epoxy resin of the present invention comprises iron core 1, high-low pressure winding 2,3, pours 11, arm-tie 5, high pressure train wheel bridge 6, high pressure lower plate 7, suspension ring 8 and pin 9, the electromagnetic wire 10 of high pressure winding 2, low pressure winding 3 is fixed among the pours of being made up of fire-retardant bisphenol type shrink epoxy resin, flame-proof phenolic type shrink epoxy resin, the stupid acid anhydride of curing agent methyl tetrahydrochysene and the stupid acid anhydride of methyl six hydrogen 11, and high pressure train wheel bridge 6, high pressure lower plate 7 are fixed on high and low pressure winding 2,3 and arm-tie 5 on the iron core 1 in the lump.
The termination of electromagnetic wire 10 is outwards drawn by the binding post 12 of high-low pressure winding 2,3 sides, low pressure winding 3 is installed in the centre of high pressure winding 2, remain with certain clearance between the high and low pressure winding 2,3, be provided with resin cushion block 4 between the two ends up and down of high and low pressure winding 2,3 and the iron core 1.
Pours 11 is to be mixed by two kinds of fire retarding epoxide resins and two kinds of curing agent, wherein the weight percent proportioning of two kinds of fire retarding epoxide resins is: fire-retardant bisphenol type shrink epoxy resin 75-95%, flame-proof phenolic type shrink epoxy resin 5-25%, the percentage by weight of two kinds of curing agent is: the stupid acid anhydride 10-90% of methyl tetrahydrochysene, the stupid acid anhydride 90-10% of methyl six hydrogen.
Iron core 1 is to be cut into the silicon steel sheet that two ends have a miter angle and to be stacked through slitting is horizontal by the silicon steel sheet coiled material, tie up fixing with strapping 14 again, arm-tie 5 is arranged on the both sides of iron core 1, the lower end of arm-tie 5 is fixed together by bolt and high pressure lower plate 7, and the upper end of arm-tie 5 is fixed together with high pressure train wheel bridge 6 by suspension ring 8, pin 9.
Suspension ring 8 are made up of screw rod and annulus, screw rod is welded on the cylindrical of annulus, the top of high pressure train wheel bridge 6 has a upright opening, the side has a lateral aperture, the lateral aperture of this lateral aperture and arm-tie 5 ends and the centre bore of annulus are positioned on the same center line, and pin 9 is through among the lateral aperture of centre bore, high pressure train wheel bridge 6 sides and arm-tie 5 of annulus.
Carefully illustrate below in conjunction with the structure and the following sample of making work of accompanying drawing dry transformer of fire-proof epoxy resin of the present invention.
Accompanying drawing 1 is the complete machine structure schematic diagram of dry transformer of fire-proof epoxy resin;
Accompanying drawing 2 is the arm-tie mounting structure schematic diagram of dry transformer of fire-proof epoxy resin.
The making of dry transformer of fire-proof epoxy resin of the present invention mainly contains the making of transformer core, the making of transformer high and low pressure winding and the assembling of transformer.
The making step of transformer high and low pressure winding is: the first step be on transformer line mould with electromagnetic wire respectively coiling go out the high and low pressure coil of transformer, second goes on foot: the high and low pressure circuit coil of transformer is put into watered in the injection molding, send into and pour into a mould the pours of forming by fire-retardant bisphenol type shrink epoxy resin, flame-proof phenolic type shrink epoxy resin, the stupid acid anhydride of curing agent methyl tetrahydrochysene, the stupid acid anhydride of methyl six hydrogen in the vacuum pouring equipment, the best proportioning of pours is: fire-retardant bisphenol type shrink epoxy resin 90%, flame-proof phenolic type shrink epoxy resin 10%.The percentage by weight of two kinds of curing agent is the stupid acid anhydride 20% of methyl tetrahydrochysene, the stupid acid anhydride 80% of methyl six hydrogen.Cast finishes to move into fire retarding epoxide resin is solidified, and the high and low pressure coil stationary is made height, the pressure winding of transformer in pours.The 3rd step: pours is solidified and will be watered injection molding behind counter the finishing take out the demoulding from vacuum pouring equipment, and the pours cutting of high-low pressure winding two ends is trimmed to given size, and the high and low pressure winding is just made and finished.Leave axial ducts 13 in the middle of the high-low pressure winding after the demoulding.
The making of transformer core: be earlier the silicon steel sheet coiled material to be cut into the strip silicon steel sheet that two ends are miter angle through slitting is horizontal, again the silicon steel sheet closed assembly that cuts become transformer core, arm-tie is placed in the both sides of iron core, tie up with strapping.
The assembling of transformer: the low pressure winding with transformer is installed on the iron core earlier, again the high pressure winding is installed in the outside of low pressure winding, separate with the fire retarding epoxide resin cushion block between the two ends up and down of high-low pressure winding and the iron core, high pressure train wheel bridge and high pressure lower plate are clamped from both sides iron core with arm-tie, the lower end of arm-tie is fixed with bolt and high pressure lower plate, the screw rod of suspension ring is through in the upright opening at high pressure train wheel bridge top, pin is penetrated from the centre bore of suspension ring annulus, the lateral aperture that passes high pressure train wheel bridge side is through in the lateral aperture of arm-tie upper end again, screw rod is tightened in the top of high pressure train wheel bridge with nut, suspension ring pulling arm-tie is tightened with the clamping of the iron core in the middle of two arm-ties it in the time of tightening nuts, at last with on the high pressure, lower plate and set bolt are fixing solid with iron core and winding, like this, dry transformer of fire-proof epoxy resin is just installed to make and is finished.Adopting pulling plate structure is in order to reduce the be in operation noise that produced and strengthen the vertically fastening of transformer core of transformer core.
Dry transformer of fire-proof epoxy resin of the present invention is compared with prior art, have reasonable in design, fire protection flame retarding, safe and reliable, its electric property meets international UL standard, fire resistance reaches characteristics such as VO grade standard, thereby, have good value for applications.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (5)
1. dry transformer of fire-proof epoxy resin, comprise iron core, high-low pressure winding, pours, arm-tie, high pressure train wheel bridge, high pressure lower plate, suspension ring and pin, the electromagnetic wire that it is characterized in that high pressure winding, low pressure winding is fixed among the pours of being made up of fire-retardant bisphenol type shrink epoxy resin, flame-proof phenolic type shrink epoxy resin, the stupid acid anhydride of curing agent methyl tetrahydrochysene and the stupid acid anhydride of methyl six hydrogen, and high pressure train wheel bridge, high pressure lower plate are fixed on high and low pressure winding and arm-tie on the iron core in the lump.
2. dry transformer of fire-proof epoxy resin according to claim 1, the termination that it is characterized in that electromagnetic wire is outwards drawn by the binding post of high-low pressure winding side, the low pressure winding is installed in the centre of high pressure winding, remains with certain clearance between the high and low pressure winding.
3. dry transformer of fire-proof epoxy resin according to claim 2, it is characterized in that pours is to be mixed by two kinds of fire retarding epoxide resins and two kinds of curing agent, wherein the weight percent proportioning of two kinds of fire retarding epoxide resins is: fire-retardant bisphenol type shrink epoxy resin 75-95%, flame-proof phenolic type shrink epoxy resin 5-25%, the percentage by weight of two kinds of curing agent is: the stupid acid anhydride 10-90% of methyl tetrahydrochysene, the stupid acid anhydride 90-10% of methyl six hydrogen.
4. dry transformer of fire-proof epoxy resin according to claim 1, it is characterized in that iron core is to be cut into the silicon steel sheet that two ends have a miter angle and to be stacked through slitting is horizontal by the silicon steel sheet coiled material, tie up fixing again with strapping, arm-tie is arranged on the both sides of iron core, the lower end of arm-tie is fixed together by bolt and high pressure lower plate, and the upper end of arm-tie is fixed together by suspension ring, pin and high pressure train wheel bridge.
5. dry transformer of fire-proof epoxy resin according to claim 4, it is characterized in that suspension ring are made up of screw rod and annulus, screw rod is welded on the cylindrical of annulus, the top of high pressure train wheel bridge has a upright opening, the side has a lateral aperture, the lateral aperture of this lateral aperture and arm-tie end and the centre bore of annulus are positioned on the same center line, and pin is through among the lateral aperture of centre bore, high pressure train wheel bridge side and arm-tie of annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115624A CN1060580C (en) | 1996-01-22 | 1996-01-22 | Dry transformer of fire-proof epoxy resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115624A CN1060580C (en) | 1996-01-22 | 1996-01-22 | Dry transformer of fire-proof epoxy resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1155742A CN1155742A (en) | 1997-07-30 |
| CN1060580C true CN1060580C (en) | 2001-01-10 |
Family
ID=5122856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96115624A Expired - Fee Related CN1060580C (en) | 1996-01-22 | 1996-01-22 | Dry transformer of fire-proof epoxy resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060580C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308721B (en) * | 2007-05-14 | 2010-09-08 | 沈阳昊诚电气有限公司 | Epoxy cast dry transformer |
| CN102982974A (en) * | 2012-12-04 | 2013-03-20 | 江苏亚威变压器有限公司 | Resin insulation dry-type transformer |
| CN103208351B (en) * | 2012-12-29 | 2015-12-23 | 江苏中联电气股份有限公司 | A kind of flameproof mining mobile transformer substation dry-type transformer |
| CN105336473B (en) * | 2015-11-28 | 2018-12-18 | 河南铜牛变压器有限公司 | A kind of 24 pulse wave rectifier transformer conjugation-type iron cores |
| DE102016203776A1 (en) * | 2016-03-08 | 2017-09-14 | Siemens Aktiengesellschaft | Winding arrangement with plug-in feedthrough |
| CN105914019A (en) * | 2016-05-30 | 2016-08-31 | 江苏国能合金科技有限公司 | 10-KV epoxy cast dry-type transformer |
| CN111768960B (en) | 2019-04-01 | 2022-02-18 | 台达电子企业管理（上海）有限公司 | Potting box and transformer |
| CN111768947B (en) | 2019-04-01 | 2023-03-24 | 台达电子企业管理（上海）有限公司 | Transformer and method for manufacturing the same |
| CN111768959B (en) | 2019-04-01 | 2022-03-08 | 台达电子企业管理（上海）有限公司 | Transformer device |
| CN112614670A (en) * | 2020-12-03 | 2021-04-06 | 常州西电变压器有限责任公司 | Magnetic shielding structure of iron core pulling plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041852U (en) * | 1988-06-24 | 1989-07-26 | 张锦堂 | Combination insulating transformer type high-pressure producer |
| CN2045887U (en) * | 1988-12-24 | 1989-10-11 | 浙江省玉环县互感器厂 | Pouring dry transformer |
-
1996
- 1996-01-22 CN CN96115624A patent/CN1060580C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041852U (en) * | 1988-06-24 | 1989-07-26 | 张锦堂 | Combination insulating transformer type high-pressure producer |
| CN2045887U (en) * | 1988-12-24 | 1989-10-11 | 浙江省玉环县互感器厂 | Pouring dry transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1155742A (en) | 1997-07-30 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |