CN102623163A - Dry-type transformer and reactor casting process - Google Patents
Dry-type transformer and reactor casting process Download PDFInfo
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- CN102623163A CN102623163A CN201110028802XA CN201110028802A CN102623163A CN 102623163 A CN102623163 A CN 102623163A CN 201110028802X A CN201110028802X A CN 201110028802XA CN 201110028802 A CN201110028802 A CN 201110028802A CN 102623163 A CN102623163 A CN 102623163A
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Abstract
The invention relates to the manufacture of both a transformer and a reactor, in particular to a dry-type transformer and reactor casting process. The casting process comprises the steps of fixing, curing, casting, pressurizing, heating and testing, and products successfully passing the test are accepted products. The invention has the characteristics that firstly, as epoxy resin is cured in the positive pressure state, that the epoxy resin can wrap the products according to the design requirements is effectively ensured, the voltage resisting strength of the products is improved, meanwhile, the partial discharge of the products is remarkably reduced, and the appearances of the products are improved; secondly, as the epoxy resin is cured in constant-temperature state, setting can be performed according to the optimal curing temperature of the adopted epoxy resin, on one hand, the wrapping performance of the epoxy resin to the products is improved, on the other hand, the curing time is effectively shortened, and the qualification rate and the production efficiency of the products are greatly improved.
Description
Technical field
The present invention relates to the pouring technology of the manufacturing of a kind of transformer and reactor, particularly dry-type transformer, reactor.
Background technology
At present; Dry-type transformer and reactor product for prolong life of product, improve reactance voltage intensity, Product Safety is put, increased in minimizing office, comparatively general employing the method for poured with epoxy resin produce, common have common normal pressure cast and two kinds of technologies of centrifugal casting.But because the viscosity of epoxy resin is bigger; The complex structure of some product simultaneously, even the effect after the centrifugal casting is also unsatisfactory, technical indicator can't reach requirement to cause that reactance voltage strength character, the office of cast back product put etc.; Form waste product, bring very big economic loss to enterprise.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of technology of under constant temperature, pressure constant state, carrying out poured with epoxy resin is provided.
For realizing above-mentioned purpose, technical scheme of the present invention is: the pouring technology of a kind of dry-type transformer, reactor, and its processing step is:
(1) fixing, curing: the transformer that assembles, reactor are put into cast with mould, utilize silica gel transformer, reactor to be fixed on the base plate of mould, room temperature is put into baking oven and is continued curing after placing and treating that silica gel solidified in 4-10 hours;
(2) cast, pressurization, heating: the mould with said fixing, after solidifying is by taking out in the baking oven; Be cooled to room temperature, on request the product in the mould carried out poured with epoxy resin, then mould is put into pressurized canister; At constant temperature, pressure constant state after the epoxy resin full solidification; Take out mould, can do dependence test after the form removal, the product after the test passes is qualified products.
The above-mentioned temperature that in baking oven, continues to solidify is 80-100 ℃, and be 2-6 hour curing time.
In the constant temperature of above-mentioned pressurized canister, the pressure constant state, temperature is between 35-40 ℃, and pressure is 0.5～0.6Mpa.
Above-mentioned mould curing time in pressurized canister is 2-3 hour.
Characteristics of the present invention are: 1, owing under barotropic state, carry out the curing of epoxy resin; Just can guarantee effectively that epoxy resin can wrap up product by designing requirement; Improved the reactance voltage intensity of product, made product office put obvious reduction simultaneously, product appearance also gets a new look; 2, owing under temperature constant state, carry out the curing of epoxy resin; So just can set according to employed epoxy resin best curing temperature; Improved the parcel performance of epoxy resin on the one hand, can effectively reduce curing time on the other hand, production efficiency is improved greatly product.3, through said method, the qualification rate of product is improved greatly.
Embodiment
At first the transformer that assembles, reactor etc. need be carried out the product of poured with epoxy resin; Put into corresponding casting mold; And products such as transformer, reactor are fixed on the base plate of mould with silica gel, after room temperature is placed and treated that silica gel solidified in 4-10 hours, put into baking oven and continue to solidify; The time of solidifying in the baking oven, temperature are different according to size, shape and the process conditions of product, and curing time, curing temperature was at 80-100 ℃ at 2-6 hour.After being cured, mould is taken out from baking oven, be cooled to room temperature; By designing requirement the product in the mould being carried out poured with epoxy resin, then mould is put into pressurized canister, is between 35-40 ℃ in temperature; Pressure is under the state of 0.5～0.6Mpa, to the epoxy resin full solidification, takes out mould in 2-3 hour; Can do dependence test after the form removal, the product after the test passes is qualified products.
As the GPBG-0.024/0.22Z transformer is poured into a mould, minimum insulation distance 2.5mm only between this transformer primary and secondary, the maximum profile of product is 53mm * 53mm * 52mm.At first with the base plate of the supporting casting mold of this transformer on smear silica gel; Transformer is put into mould, and room temperature was placed about 8 hours, after silica gel solidifies by the time; Mould is put into baking oven; Baking is 4 hours under 100 ℃ temperature, makes the silica gel full solidification, transformer firmly is bonded on the base plate of mould.Take out mold cools down to room temperature, the E5262 poured with epoxy resin that configures in mould, is put into pressurized canister with mould; Under air-tight state, be warming up to about 35 ℃, keep-uping pressure is 0.5Mpa; Solidified 3 hours, and to the epoxy resin full solidification, took out mould; Can do dependence test after the form removal, the product after the test passes is qualified products.
For above-mentioned transformer, adopt this technology to pour into a mould and contrast of the test parameter of centrifugal casting as following table: respectively 10.
Different according to size, shape and the process conditions of product; With product and die bottom plate with the silica gel bonding good after; Room temperature standing time is 4,5,6,7,9,10 hours, its objective is to make product and die bottom plate possess certain intensity that Shi Buhui moves moving moulds.The time of putting into baking oven continuation curing, curing temperature its objective is to make product and die bottom plate full solidification, for casting epoxy resin is laid a solid foundation at 80,90,100 ℃ at 2,3,5,6 hours.
Also can directly in pressurized canister, pour into a mould during cast; The cast back is warming up to 35 ℃, 36 ℃, 37 ℃, 38 ℃, 39 ℃, 40 ℃ with pressurized canister under air-tight state, keep-uping pressure is 0.5Mpa or 0.6Mpa; 2 hours curing times or 3 hours are to the epoxy resin full solidification.
Claims (4)
1. the pouring technology of a dry-type transformer, reactor, its processing step is:
(1) fixing, curing: the transformer that assembles, reactor are put into cast with mould, utilize silica gel transformer, reactor to be fixed on the base plate of mould, room temperature is put into baking oven and is continued curing after placing and treating that silica gel solidified in 4-10 hours;
(2) cast, pressurization, heating: the mould with said fixing, after solidifying is by taking out in the baking oven; Be cooled to room temperature, on request the product in the mould carried out poured with epoxy resin, then mould is put into pressurized canister; At constant temperature, pressure constant state after the epoxy resin full solidification; Take out mould, can do dependence test after the form removal, the product after the test passes is qualified products.
2. according to the pouring technology of right 1 described dry-type transformer, reactor, it is characterized in that the above-mentioned temperature that in baking oven, continues to solidify is 80-100 ℃, be 2-6 hour curing time.
3. the pouring technology of dry-type transformer according to claim 2, reactor is characterized in that temperature is between 35-40 ℃ in the constant temperature, pressure constant state of above-mentioned pressurized canister, and pressure is 0.5～0.6Mpa.
4. the pouring technology of dry-type transformer according to claim 3, reactor is characterized in that above-mentioned mould curing time in pressurized canister is 2-3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028802XA CN102623163A (en) | 2011-01-27 | 2011-01-27 | Dry-type transformer and reactor casting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110028802XA CN102623163A (en) | 2011-01-27 | 2011-01-27 | Dry-type transformer and reactor casting process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102623163A true CN102623163A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110028802XA Pending CN102623163A (en) | 2011-01-27 | 2011-01-27 | Dry-type transformer and reactor casting process |
Country Status (1)
| Country | Link |
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| CN (1) | CN102623163A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692590A (en) * | 2013-12-17 | 2014-04-02 | 中国航天时代电子公司 | Transformer shell gluing device and gluing method with same |
| CN104875311A (en) * | 2015-04-24 | 2015-09-02 | 江苏天利机电有限公司 | Production and pouring method of dry type transformer coil |
| CN105280334A (en) * | 2014-06-25 | 2016-01-27 | 佛山市国电电器有限公司 | Structure of electric reactor |
| CN105810391A (en) * | 2016-05-05 | 2016-07-27 | 上海兆启新能源科技有限公司 | Composite encapsulating structure for high-frequency electrical product |
| CN106158336A (en) * | 2016-06-21 | 2016-11-23 | 广州市特宏电器有限公司 | A kind of resin insulating dry type transformer coil pressure gel forming method |
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| US5267393A (en) * | 1993-03-17 | 1993-12-07 | Square D Company | Method of manufacturing a strip wound coil to eliminate lead bulge |
| JPH07246625A (en) * | 1994-03-10 | 1995-09-26 | Hitachi Chem Co Ltd | Manufacture of electrical apparatus |
| JPH11307363A (en) * | 1998-04-17 | 1999-11-05 | Sanmei Denki Kk | Method of forming differential transformer |
| CN1741210A (en) * | 2005-09-05 | 2006-03-01 | 韶关市韶特电气有限公司 | Dry type electric transformer teeming epoxy resin coil non-cutting technology |
| CN201332019Y (en) * | 2008-12-16 | 2009-10-21 | 海南威特电气集团有限公司 | Device for manufacturing resin poured coil of dry-type power transformer |
| CN101770856A (en) * | 2010-03-13 | 2010-07-07 | 中山市泰峰电气有限公司 | Production method of mutual inductor |
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2011
- 2011-01-27 CN CN201110028802XA patent/CN102623163A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5267393A (en) * | 1993-03-17 | 1993-12-07 | Square D Company | Method of manufacturing a strip wound coil to eliminate lead bulge |
| JPH07246625A (en) * | 1994-03-10 | 1995-09-26 | Hitachi Chem Co Ltd | Manufacture of electrical apparatus |
| JPH11307363A (en) * | 1998-04-17 | 1999-11-05 | Sanmei Denki Kk | Method of forming differential transformer |
| CN1741210A (en) * | 2005-09-05 | 2006-03-01 | 韶关市韶特电气有限公司 | Dry type electric transformer teeming epoxy resin coil non-cutting technology |
| CN201332019Y (en) * | 2008-12-16 | 2009-10-21 | 海南威特电气集团有限公司 | Device for manufacturing resin poured coil of dry-type power transformer |
| CN101770856A (en) * | 2010-03-13 | 2010-07-07 | 中山市泰峰电气有限公司 | Production method of mutual inductor |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692590A (en) * | 2013-12-17 | 2014-04-02 | 中国航天时代电子公司 | Transformer shell gluing device and gluing method with same |
| CN103692590B (en) * | 2013-12-17 | 2015-11-18 | 中国航天时代电子公司 | A kind of transformer shell glue-pouring device and use the method for this device encapsulating |
| CN105280334A (en) * | 2014-06-25 | 2016-01-27 | 佛山市国电电器有限公司 | Structure of electric reactor |
| CN104875311A (en) * | 2015-04-24 | 2015-09-02 | 江苏天利机电有限公司 | Production and pouring method of dry type transformer coil |
| CN105810391A (en) * | 2016-05-05 | 2016-07-27 | 上海兆启新能源科技有限公司 | Composite encapsulating structure for high-frequency electrical product |
| CN106158336A (en) * | 2016-06-21 | 2016-11-23 | 广州市特宏电器有限公司 | A kind of resin insulating dry type transformer coil pressure gel forming method |
| CN106158336B (en) * | 2016-06-21 | 2018-10-09 | 广州市特宏电器有限公司 | A kind of resin insulating dry type transformer coil pressure gel forming method |
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Application publication date: 20120801 |