CN1155742A - Dry transformer of fire-proof epoxy resin - Google Patents
Dry transformer of fire-proof epoxy resin Download PDFInfo
- Publication number
- CN1155742A CN1155742A CN 96115624 CN96115624A CN1155742A CN 1155742 A CN1155742 A CN 1155742A CN 96115624 CN96115624 CN 96115624 CN 96115624 A CN96115624 A CN 96115624A CN 1155742 A CN1155742 A CN 1155742A
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- epoxy resin
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- iron core
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Abstract
A dry transformer with flame-retardent epoxy resin is composed of iron core, high-voltage and low-voltage windings, filler, resin pad, pull plates, high-voltage upper and lower clamping plates, hanging ring and pins. The windings are installed to iron core and the pull plates are fixed to both sides of iron core by the above mentioned clamping plates. Its advantages include reasonable design, high safety and reliability, electric properties conforming to international UL standard, and flame-retarding performance reaching VO-level standard.
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 purpose of this invention is to 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.
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.
With reference to accompanying drawing to the structure of fire-retardant epoxy resin dry type transformer of the present invention with Make to do following auspiciously carefully illustrate.
Dry transformer of fire-proof epoxy resin of the present invention, form by iron core [1], high pressure winding [2], low pressure winding [3], pours [3], resin cushion block [4], arm-tie [5], high pressure train wheel bridge [6], high pressure lower plate [7], suspension ring [8] and pin [9], high pressure winding [2], low pressure winding [3] are installed in [1] on the iron core, and high pressure train wheel bridge [6], high pressure lower plate [7] are fixed on arm-tie [5] both sides of iron core [1].High pressure winding [2], low pressure winding [3] are made up of electromagnetic wire [10] and pours [11], electromagnetic wire [10] is fixed among the pours [11], outwards draw from the binding post [12] of high pressure winding [2] side the termination of electromagnetic wire [10], low pressure winding [3] is installed in the centre of high pressure winding [2], remains with between the high and low pressure winding and leaves axial ventilation road [13] in the certain clearance high-low pressure winding.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, and it is fixing to use strapping [14] to tie up again, arm-ties [5] is installed in the both sides of iron core [1] is fixed on the iron core [1] by high pressure clamping plate [6] [7] up and down.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 by suspension ring [8], pin [9] and train wheel bridge [6].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 [6] 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 [9] is through among the lateral aperture of centre bore, high pressure train wheel bridge [6] side and arm-tie [5] of annulus.
Embodiment:
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 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.
Fire-retardant epoxy resin dry type transformer of the present invention is compared with existing technology tool There are reasonable in design, fire protection flame retarding, safe and reliable, its electric property to meet state Border UL standard, fire resistance reaches the characteristics such as VO grade standard, thereby, have Well promote the use of value.
Except the described technology feature of specification, be those skilled in the art Know technology.
Claims (6)
1. dry transformer of fire-proof epoxy resin, comprise iron core, high-low pressure winding, pours, resin cushion block, arm-tie, high pressure train wheel bridge, high pressure lower plate, suspension ring and pin, it is characterized in that the high and low pressure winding is installed on the iron core, high pressure train wheel bridge, high pressure lower plate are fixed on arm-tie the both sides of iron core.
2. dry transformer of fire-proof epoxy resin according to claim 1, it is characterized in that high pressure winding, low pressure winding be made up of electromagnetic wire and pours, electromagnetic wire is fixed among the pours, the termination of 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 fixingly again with strapping, arm-tie is installed in the both sides of iron core is fixed on the iron core by high pressure clamping plate up and down again.
5. dry transformer of fire-proof epoxy resin according to claim 4 is characterized in that 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 train wheel bridge.
6. 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 true CN1155742A (en) | 1997-07-30 |
| CN1060580C 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) |
Cited By (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 |
| CN103208351A (en) * | 2012-12-29 | 2013-07-17 | 江苏中联电气股份有限公司 | Dry-type transformer for mining flameproof movable substation |
| CN105336473A (en) * | 2015-11-28 | 2016-02-17 | 河南铜牛变压器有限公司 | Conjugate iron core for 24-pulse-wave rectifier transformer |
| 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 |
| CN108885934A (en) * | 2016-03-08 | 2018-11-23 | 西门子股份公司 | Winding arrangement with plug casing |
| CN111768959A (en) * | 2019-04-01 | 2020-10-13 | 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 |
| US11610717B2 (en) | 2019-04-01 | 2023-03-21 | Delta Electronics (Shanghai) Co., Ltd | Potting box and transformer |
| US11610729B2 (en) | 2019-04-01 | 2023-03-21 | Delta Electronics (Shanghai) Co., Ltd | Transformer and assembling method thereof |
Family Cites Families (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
Cited By (13)
| 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 |
| CN103208351A (en) * | 2012-12-29 | 2013-07-17 | 江苏中联电气股份有限公司 | Dry-type transformer for mining flameproof movable substation |
| 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 |
| CN105336473A (en) * | 2015-11-28 | 2016-02-17 | 河南铜牛变压器有限公司 | Conjugate iron core for 24-pulse-wave rectifier transformer |
| CN108885934A (en) * | 2016-03-08 | 2018-11-23 | 西门子股份公司 | Winding arrangement with plug casing |
| US11295886B2 (en) | 2016-03-08 | 2022-04-05 | Siemens Energy Global GmbH & Co. KG | Winding arrangement having a plug-in bushing |
| 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 |
| CN111768959A (en) * | 2019-04-01 | 2020-10-13 | 台达电子企业管理（上海）有限公司 | Transformer device |
| US11610717B2 (en) | 2019-04-01 | 2023-03-21 | Delta Electronics (Shanghai) Co., Ltd | Potting box and transformer |
| US11610729B2 (en) | 2019-04-01 | 2023-03-21 | Delta Electronics (Shanghai) Co., Ltd | Transformer and assembling method thereof |
| US11610716B2 (en) | 2019-04-01 | 2023-03-21 | Delta Electronics (Shanghai) Co., Ltd | Transformer |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1060580C (en) | 2001-01-10 |
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