CN1899794A - Method for producing silicon rubber mutual inductor - Google Patents
Method for producing silicon rubber mutual inductor Download PDFInfo
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- CN1899794A CN1899794A CN 200610107926 CN200610107926A CN1899794A CN 1899794 A CN1899794 A CN 1899794A CN 200610107926 CN200610107926 CN 200610107926 CN 200610107926 A CN200610107926 A CN 200610107926A CN 1899794 A CN1899794 A CN 1899794A
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Abstract
The present invention is production process of silicon rubber mutual inductor with the advantages of both epoxy resin and silicon rubber. The production process includes two steps, one vacuum epoxy resin casting step to form epoxy resin layer on the windings of mutual inductor and one silicon rubber casting step to form silicon rubber layer in all the non-winding parts of the mutual inductor. The silicon rubber casting includes pre-treatment of the mutual inductor and casting inside a vacuum casting apparatus.
Description
Technical field
The present invention relates to a kind of production method of outdoor use transformer, is a kind of production method of silicon rubber outdoor mutual inductor specifically.
Background technology
The outdoor dry type transformer adopts the outdoor type poured with epoxy resin to form usually, and epoxy resin has the advantages that intensity is big, the insulated enclosure performance is good, and crackle appears in appearance, easily aging, anti-soil dodges the defective of poor performance but also exist simultaneously.Silastic material obtains fully certainly in power industry, and is promoted widely and use with its good electric property.But because it belongs to semifluid, and moulding process needs high temperature, high pressure, to mould, appointed condition restriction, at present can only be simple relatively in profile or product that volume is relatively little on use.And on the product for, complex contour big at the transformer equal-volume, excessive because of mould and equipment investment, and can not produce the complex appearance structure, can not satisfy working condition.Though silicon rubber has above advantage in addition, it belongs to elastomer, no support force.Heat dispersion is poor, even the heating in product when operation can not be distributed, makes that the temperature rise performance is difficult to solve.Above characteristic is not suitable for electric power mutual-inductor and uses.Above factor causes silicon rubber should reach with promoting in height, medium voltage electricity transformer to be hindered.
Summary of the invention
The purpose of this invention is to provide a kind of production method that has both the silicon rubber mutual inductor of epoxy resin and the outstanding characteristics of silicon rubber simultaneously.
For achieving the above object, the present invention adopts following technical scheme:
The production method of silicon rubber mutual inductor of the present invention, comprise two steps of poured with epoxy resin and silicon rubber cast, wherein poured with epoxy resin is to adopt the vacuum pouring technology partly to pour into a mould the epoxy resins insulation layer at the winding of transformer, the silicon rubber cast is at the non-any position of winding part epoxy pour mass of transformer or pours into a mould silicone rubber insulation layer on the whole that the silicon rubber cast comprises the steps
A) device body preliminary treatment is for the part of device body and coil outside need cast silicon rubber, brushing surfactant and coupling agent; Carry out by following program:
A1) with on the epoxy resin poured body with the processing of sandblasting of the material surface of silicon rubber joining part, the surface after sandblasting is stained with acetone with byssus or towel or toluene cleans up, and removes greasy dirt, spot;
A2) surfactant is coated in the surface that the A1 step process crosses and need cast silicon rubber the surface, air duct oven dry, brushing coupling agent again behind the bone dry;
B) cast, adopt vacuum equipment directly to pour into a mould, control silicon rubber mixture temperature is no more than 38 ℃ during cast, vacuum degree control is at 0.09～0.1Mpa, continue vacuum behind the casting complete more than 10 minutes, close vacuum equipment then, remaining silicon rubber compound is poured in the mould space that produces because of silicon rubber compound solidification shrinkage; After the silicon rubber compound cast, left standstill 1 hour being not less than under 15 ℃ the room temperature, escape out fully to guarantee inner micro-bubble, mould is put into 35 ± 2 ℃ then, the warm and humid control baking oven of relative humidity 75 ± 5% vulcanizes die sinking in 3～4 hours.
Adopt aforementioned production method, have following advantage:
This technology is to remedy the low shortcoming that elastomer does not have support force, employing epoxy resin and the silicon rubber compound inslation of reaching of its thermal diffusivity.For cooperating the silicon rubber characteristic, adapt to outdoor service condition, selected outdoor type epoxy resin for use.Be the difficult problem of the moulding that solves silicon rubber, the new type silicone rubber and the material prescription that have used normal temperature, normal pressure to solidify in the technology.For strengthening the adhesion problems of silicon rubber and outdoor epoxy resin, this process using surfactant and coupling agent guarantee that silicon rubber and epoxy resin surface reliably connect.For guaranteeing inner zero defect of pour mass and bubble, the cast of this process using vacuum.It is big that the transformer that adopts this method to produce had both had conventional epoxies transformer intensity, the characteristics of perfect heat-dissipating, and the migration of its unique hydrophobicity, the hydrophobicity of itself is migrated to the surface filth layer, make it possess good anti-soil and dodge performance, and electric arc dodges charing rear surface hydrophobicity self-healing.
The specific embodiment
The production method of silicon rubber mutual inductor of the present invention, the coiling of coil and insulating barrier are poured into a mould two aspects, wherein the insulating barrier cast comprises poured with epoxy resin and two steps of silicon rubber cast, wherein poured with epoxy resin is to adopt the vacuum pouring technology partly to pour into a mould the epoxy resins insulation layer at the winding of transformer, its production technology and step are identical with the production method of traditional epoxy resin transformer, no longer repeat at this.
The silicon rubber cast is a silicone rubber insulation layer in the non-winding part of transformer or whole all cast, and the silicon rubber cast comprises the steps
A) device body preliminary treatment is for the part of device body and coil outside need cast silicon rubber, brushing surfactant and coupling agent; Carry out by following program:
A1) with on the epoxy resin poured body with the processing of sandblasting of the material surface of silicon rubber joining part, the surface after sandblasting is stained with acetone with byssus or towel or toluene cleans up, and removes greasy dirt, spot;
A2) surfactant is coated in the surface that the A1 step process crosses and need cast silicon rubber the surface, air duct oven dry, brushing coupling agent again behind the bone dry;
B) cast, adopt vacuum equipment directly to pour into a mould, control silicon rubber mixture temperature is no more than 38 ℃ during cast, vacuum degree control is at 0.09～0.1Mpa, continue vacuum behind the casting complete more than 10 minutes, close vacuum equipment then, remaining silicon rubber compound is poured in the mould space that produces because of silicon rubber compound solidification shrinkage; After the silicon rubber compound cast, left standstill 1 hour being not less than under 15 ℃ the room temperature, escape out fully to guarantee inner micro-bubble, mould is put into 35 ± 2 ℃ then, the warm and humid control baking oven of relative humidity 75 ± 5% vulcanizes die sinking in 3～4 hours.
Above-mentioned silicon rubber waters material feeding characteristic, proportioning and batch mixing:
The silicon rubber compound is divided into A, B bi-component,
Component A is a sizing material, and proportion is 1.26, and viscosity is the kermesinus viscous liquid of 30 ± 2PaS in the time of 25 ℃, is formed in the mixing reaction of ratio in 1: 2 by raw-silastic continuously and filler.
B component is a vulcanizing agent, and colourless transparent liquid is formed by glue crosslinking agent and promoter mixed preparing.
The proportioning ratio A of silicon rubber compound: B is 1: 0.1～0.3 (weight ratio).The degassing of sizing material A is handled
Instrument: vacuum pouring equipment
Sizing material A poured in the mixing tank stir, carry out vacuum outgas.Vacuum is-0.09～0.1Mpa, continue in 15 minutes more than.
During batch mixing, guarantee that sizing material A reaches the degasifying effect of expection after, can carry out batch mixing, batch mixing carries out in vacuum pouring equipment.
1) take by weighing sizing material A component, pour mixing tank into, and turn on agitator.
2) according to the weight of sizing material A, calculate the weight of B component vulcanizing agent B by proportioning, weigh in the balance and get and slowly add among the component sizing material A.
3) stirred 3～5 minutes, until mixing.
4) compound that stirs, vacuum outgas are handled and can be poured into a mould in 10 minutes.
Claims (1)
1, the production method of silicon rubber mutual inductor, it is characterized in that: comprise two steps of poured with epoxy resin and silicon rubber cast, wherein poured with epoxy resin is to adopt the vacuum pouring technology partly to pour into a mould the epoxy resins insulation layer at the winding of transformer, the silicon rubber cast is at the non-any position of winding part epoxy pour mass of transformer or pours into a mould silicone rubber insulation layer on the whole that the silicon rubber cast comprises the steps
A) device body preliminary treatment is for the part of device body and coil outside need cast silicon rubber, brushing surfactant and coupling agent; Carry out by following program:
A1) with on the epoxy resin poured body with the processing of sandblasting of the material surface of silicon rubber joining part, the surface after sandblasting is stained with acetone with byssus or towel or toluene cleans up, and removes greasy dirt, spot;
A2) surfactant is coated in the surface that the A1 step process crosses and need cast silicon rubber the surface, air duct oven dry, brushing coupling agent again behind the bone dry;
B) cast, adopt vacuum equipment directly to pour into a mould, control silicon rubber mixture temperature is no more than 38 ℃ during cast, vacuum degree control is at 0.09～0.1Mpa, continue vacuum behind the casting complete more than 10 minutes, close vacuum equipment then, remaining silicon rubber compound is poured in the mould space that produces because of silicon rubber compound solidification shrinkage; After the silicon rubber compound cast, left standstill 1 hour being not less than under 15 ℃ the room temperature, escape out fully to guarantee inner micro-bubble, mould is put into 35 ± 2 ℃ then, the warm and humid control baking oven of relative humidity 75 ± 5% vulcanizes die sinking in 3～4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101079266A CN100448641C (en) | 2006-07-22 | 2006-07-22 | Method for producing silicon rubber mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101079266A CN100448641C (en) | 2006-07-22 | 2006-07-22 | Method for producing silicon rubber mutual inductor |
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| CN1899794A true CN1899794A (en) | 2007-01-24 |
| CN100448641C CN100448641C (en) | 2009-01-07 |
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| CNB2006101079266A Expired - Fee Related CN100448641C (en) | 2006-07-22 | 2006-07-22 | Method for producing silicon rubber mutual inductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770856A (en) * | 2010-03-13 | 2010-07-07 | 中山市泰峰电气有限公司 | Production method of mutual inductor |
| CN101872678A (en) * | 2010-06-17 | 2010-10-27 | 福建山亚开关有限公司 | Process of producing electrical product through pressure gelation of epoxy resin |
| CN102117421A (en) * | 2009-12-31 | 2011-07-06 | 上海量科电子科技有限公司 | Fluid type radio frequency identification structure and manufacturing method thereof |
| CN103552202A (en) * | 2013-10-31 | 2014-02-05 | 浙江省开化七一电力器材有限责任公司 | Composite bushing machining method |
| CN111531783A (en) * | 2020-05-06 | 2020-08-14 | 登高电气有限公司 | Injection molding process of voltage transformer |
| CN113858539A (en) * | 2021-09-24 | 2021-12-31 | 广东四会互感器厂有限公司 | Forming process of outdoor epoxy resin composite material product |
| CN117393319A (en) * | 2023-11-07 | 2024-01-12 | 浙江江山变压器股份有限公司 | High-voltage winding and preparation method and application thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101722605B (en) * | 2009-11-13 | 2012-11-14 | 浙江工业大学 | Method for embedding radio-frequency tag into silicon rubber label |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3453017B2 (en) * | 1995-12-19 | 2003-10-06 | 日本碍子株式会社 | Polymer insulator |
| JPH11329124A (en) * | 1998-03-16 | 1999-11-30 | Ngk Insulators Ltd | Polymer insulator and its manufacture |
| EP1130605A1 (en) * | 2000-03-01 | 2001-09-05 | Wermelinger AG | Method for manufacturing a high-voltage composite insulator, high-voltage insulator and plastic for use in the method, method for manufacturing a non-cylindrical component |
| CN2454881Y (en) * | 2000-12-25 | 2001-10-17 | 杨秉臻 | Voltage mutual inductor |
| CN2525662Y (en) * | 2002-01-04 | 2002-12-11 | 熊江咏 | Dry current mutual inductor |
| CN2534663Y (en) * | 2002-03-26 | 2003-02-05 | 顺德特种变压器厂 | Dry type current mutual inductor |
-
2006
- 2006-07-22 CN CNB2006101079266A patent/CN100448641C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117421A (en) * | 2009-12-31 | 2011-07-06 | 上海量科电子科技有限公司 | Fluid type radio frequency identification structure and manufacturing method thereof |
| CN102117421B (en) * | 2009-12-31 | 2015-08-05 | 马宇尘 | A kind of fluid type radio frequency identification structure and manufacture method thereof |
| CN101770856A (en) * | 2010-03-13 | 2010-07-07 | 中山市泰峰电气有限公司 | Production method of mutual inductor |
| CN101872678A (en) * | 2010-06-17 | 2010-10-27 | 福建山亚开关有限公司 | Process of producing electrical product through pressure gelation of epoxy resin |
| CN103552202A (en) * | 2013-10-31 | 2014-02-05 | 浙江省开化七一电力器材有限责任公司 | Composite bushing machining method |
| CN111531783A (en) * | 2020-05-06 | 2020-08-14 | 登高电气有限公司 | Injection molding process of voltage transformer |
| CN113858539A (en) * | 2021-09-24 | 2021-12-31 | 广东四会互感器厂有限公司 | Forming process of outdoor epoxy resin composite material product |
| CN117393319A (en) * | 2023-11-07 | 2024-01-12 | 浙江江山变压器股份有限公司 | High-voltage winding and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN100448641C (en) | 2009-01-07 |
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