CN107123526A - The production method of insulating cylinder with function of shielding - Google Patents
The production method of insulating cylinder with function of shielding Download PDFInfo
- Publication number
- CN107123526A CN107123526A CN201610102444.5A CN201610102444A CN107123526A CN 107123526 A CN107123526 A CN 107123526A CN 201610102444 A CN201610102444 A CN 201610102444A CN 107123526 A CN107123526 A CN 107123526A
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- CN
- China
- Prior art keywords
- adhesive
- insulating cylinder
- shielding
- copper foil
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
Abstract
The present invention relates to electrical equipment, specifically there is the production method of the insulating cylinder of function of shielding, using formed by winding glass reinforced plastic technique, by on the glass fiber winding of dipped resin adhesive liquid to core, when being wound to certain thickness fiber, the copper foil for the semi-solid preparation for impregnating adhesive is laid on the glass fibers, winding is further continued for, until required thickness, the described insulating cylinder with function of shielding is made by solidification, releasing process.The present invention uses winding shaping process and special adhesive, copper foil is easily organically combined with fiberglass, has glass fibre reinforced plastic cylinder and insulate and two kinds of functions of shielding, meets transformer manufacturing requirement.
Description
Technical field
It is a kind of supporting with transformer there is shielding work(specifically the present invention relates to electrical equipment
The production method of the insulating cylinder of energy.
Background technology
Power industry is the infrastructural industries and public utilities for supporting national economy and social development, and transformer
It is then the particularly significant equipment of electrical power trans mission/distribution system.Therefore, design and the innovation of manufacturing process to transformer,
New material is selected, transformer quality is improved, reduces its cost, is the important of promotion China electric power industry development
Condition.
Since reform and opening-up, China's transformer industry achieves tremendous development, especially small capacity transformer
Production possesses suitable strength, and critical role is occupied in competition in the international market, in some American-European developed countries
Occupy considerable share.But in terms of high power capacity, ultra-high capacity transformer, the technical strength of China also compares
Weakness, hinders the development of China's transformer industry.The demand driving in market transformer is to high frequency, Gao Rong
The environmentally friendly direction of amount, efficient low-consume, low cost and low-noise energy-saving is developed, and this is accomplished by the production for producing transformer
Each link of industry chain will make great efforts to create conditions towards this direction.
Transformer can also be influenceed as Other Instruments instrument by high-frequency alternating magnetic field.Therefore, it is necessary to
Try to reduce this adverse effect as far as possible.At present, in transformer manufacturing, in order to solve this problem, lead to
High-frequency alternating magnetic field is shielded frequently with copper cover.The early system for having been widely used for transformer of glass fibre reinforced plastic insulating cylinder
Make, but the cylinder of the glass fibre reinforced plastic insulating with function of shielding has no report.
Chinese patent literature CN204303515U discloses a kind of dry type with function of shielding insulating cylinder and moved
Commutating phase transformer, the insulating cylinder includes being provided with screen layer in insulating cylinder main body, the interlayer of insulating cylinder main body,
Insulating cylinder main body is integrated with screen layer solidification；The screen layer be one whole or multistage copper foil or aluminium foil, it is many
Section copper foil or aluminium foil adjacent position are at regular intervals；There is setting spacing screen layer threshold value insulating cylinder end；
Insulating cylinder also includes ground strip, and ground strip welding is drawn；Ground strip and the contact position of insulating cylinder bottom part body are set
There is boss, it is ensured that do not leak copper.Chinese patent literature CN102360841A discloses a kind of dry rectifier transformation
The earthing preparation method of device, make exterior loop insulating cylinder when, first insulating cylinder for winding, insulating cylinder not around it is complete when,
Start to be bonded earthing；Earthing copper foil is placed on the outside of semi-finished product insulating cylinder, insulating cylinder for winding is then proceeded to,
After the completion of coiling, earthing is with insulating cylinder drying forming.But all do not selected in above two pieces patent
Adhesive applicating makes copper foil and fiberglass is organic combines closely, but be directly laid on copper foil on copper foil
On fiber reinforced plastic barrel.Such product, when changing repeatedly through high/low temperature, copper foil is easy to foaming, can loosen, shadow
The insulating properties and shielding properties of insulating cylinder are rung, product quality stability is poor, and copper foil laying process can be grasped
The property made is also poor.If copper foil laying is bad, the qualification rate and product quality of product can be influenceed.
The content of the invention
There is function of shielding insulating cylinder, the insulation it is an object of the invention to provide a kind of and supporting transformer
Cylinder is using epoxy resin as matrix, and glass fiber reinforcement, using winding shaping process and a kind of adhesive, is tried
Copper foil is embedded in insulating cylinder body, there is glass fibre reinforced plastic cylinder and insulate and two kinds of functions of shielding, transformer system is met
Make requirement.
Although the traditional product of transformer also certain market, it is very fierce to compete, profit margin very little,
Want to make power transformer product that there is competitiveness to dominate the market, to adapt to the demand of electric power industry development, it is necessary to
Develop the high-end product of high performance-price ratio a new generation.The manufacturing cost of transformer is also to hinder transformer to high frequency
One of change, the factor of high power capacity development.Therefore, the material cost and cost of labor of transformer how to be reduced
Problem just shows especially out.
Industrialized development, the demand to transformer is increasing, to its quality requirement more and more higher.Become
Depressor manufacturer in the design of transformer all consider electric insulation and magnetic screen problem, but solve method and
Measure then considers respectively.So, manufacture transformer when often make troubles, when not only taking a lot of work but also
Waste of materials.If moreover, not kept on improving in assembling, it is also possible to have influence on the total quality of transformer
And service life.
The present invention utilizes E51 epoxy resin, methyl tetrahydro phthalic anhydride curing agent, glass fibre, copper foil and special
The materials such as adhesive, using winding shaping process, production diameter 100mm~1100mm has function of shielding
Insulating cylinder.
The first aspect of the present invention is there is provided the production method of the insulating cylinder with function of shielding, using fiberglass
Winding shaping process, by the glass fiber winding of dipped resin adhesive liquid to core, is wound to certain thickness
During fiber, the copper foil for the semi-solid preparation for impregnating adhesive is laid on the glass fibers, winding is further continued for, directly
To required thickness, the described insulating cylinder with function of shielding is made by solidification, releasing process.Institute
A diameter of 100mm~the 1100mm for the insulating cylinder stated.
Raw material in described resin adhesive liquid is E51 epoxy resin, methyl tetrahydro phthalic anhydride, dimethylamine, weight
Than for (90-110): (75-85): (0.4-0.6), preferably 100: 80: 0.5.
Although being ripe work using the technique of Wrapping formed fiber reinforced plastic barrel using glass fibre and epoxy resin
Skill, but the formula of resin adhesive liquid is had nothing in common with each other according to the species of resin.Found in our experiment, tree
Each material all has an impact with the quality for comparing winding shaping process and product in fat glue, resin of the invention
Glue formula is determined by test of many times.The present invention is tested in development process by repeated tests
Card, as epoxy resin (E51): methyl tetrahydro phthalic anhydride: dimethylamine is (90-110): (75-85):
When (0.4-0.6), using the shielding properties of product made from the winding shaping process of the present invention, heat resistance,
Insulating properties and stability all meet the requirements, its epoxy resin (E51): methyl tetrahydro phthalic anhydride: dimethylamine
Product properties are best when=100: 80: 0.5 (weight ratio).
Above ratio is to verify that what is obtained meets the optimal of the preparation technology of the present invention by repeated tests
Ratio, when proportions exceed range above, for example：As epoxy resin (E51): methyl tetrahydrochysene benzene
Acid anhydride: dimethylamine=80: when 90: 0.3, product is qualified, but causes methyl tetrahydro phthalic anhydride largely to waste, and
And beginning reaction speed is slower, and many difficulties are caused to winding shaping process；As epoxy resin (E51):
Methyl tetrahydro phthalic anhydride: dimethylamine=120: when 60: 0.8, epoxy resin cure is incomplete, insulating cylinder matter
Amount does not reach requirement.
The present invention has screened a kind of adhesive simultaneously, and the adhesive has preferable compatibility with epoxy resin, with
Copper foil has good cementability, and with the characteristic of heat-resisting and cold curing；One kind is realized to introduce copper foil
The simple and easy method of fiberglass, it is determined that production technology of the production with function of shielding insulating cylinder.It is of the present invention
The preferred glue of Red Star board all-transparent 509 of adhesive.
The species of adhesive is a lot, and all kinds of adhesive all have certain characteristic, are applicable certain application scenario.
Therefore, it is suitable to screen according to the quality requirement and molding technological condition of product for using for unit
The adhesive of oneself.According to glass reinforced plastic winding technique and the embedded mode of copper foil, preferably select and adhesive is coated in
It is just curable under conditions of room temperature on copper foil.When adhesive is in semi-cured state, laying scribbles glue
The copper foil of stick facilitates operation, and will not produce quality problems.In addition, the adhesive for being coated in copper foil will
It is combined with the epoxy resin for winding fiber, this requires selected adhesive to have good with E51 epoxy resin
Good compatibility, so just can be such that copper foil is closely organically combined with fiberglass.
In screening process, the present invention was attempted not use adhesive, and copper foil directly is laid on into glass fibre reinforced plastic cylinder
On body, but the insulating cylinder of finished product when changing repeatedly through high/low temperature, and copper foil is easy to foaming, can loosen, and influence is exhausted
The insulating properties and shielding properties of edge cylinder, product quality stability is poor, and copper foil laying process operability
Also it is poor.If copper foil laying is bad, the qualification rate and product quality of product can be influenceed.
The present invention selection adhesive principle be：Ambient temperature curable, with epoxy resin (E51) compatibility it is good,
It is heat-resist, high with copper foil adhesive strength.According to this requirement and our working experience, the present invention is to city
The adhesive products of supply carry out repeatedly screening and compared, find the glue of Red Star board all-transparent 509 performance and
Application meets the requirements, test proves that, the glue is entirely capable of reaching that product quality and moulding process will
Ask, have finally chosen the glue of Red Star board all-transparent 509.509 glue are a kind of with excellent combination property
Bi-component epoxide-resin, fine heat-resisting performance can have good phase with cold curing with E51 epoxy resin
Capacitive, has good cementability with copper foil.It is of the invention first copper foil to be impregnated deployed epoxy adhesive,
When the adhesive on copper foil is in semi-cured state, then copper foil laying is carried out, realize one kind and be embedded in copper foil
The simple and easy method of the effective specification of fiberglass.Using the glue of Red Star board all-transparent 509 can make copper foil easily with
Fiberglass is organically combined, and obtained insulating cylinder is through thermocycling, and copper foil is non-foaming, does not loosen, fiberglass
The insulating properties and shielding properties of cylinder do not change, steady quality.
With the function of shielding insulating cylinder technological process of production：Using formed by winding glass reinforced plastic technique, by dipped tree
The continuous fiber (or strap etc.) of fat glue is wound on core according to certain rule, then by solidification,
The processes such as the demoulding obtain product.Its technological process block diagram is as shown in Figure 1.Specific steps：
1st, according to the specification of product and requirement, manufacture or selection core, coating release agent are installed；
2nd, the preparation: epoxy resin (E51): methyl tetrahydro phthalic anhydride: dimethylamine=100 of glue: 80:
0.5 (weight ratio)；
3rd, the preparation of adhesive：The adhesive of selection is the glue of Red Star board all-transparent 509, the adhesive by
Two kinds of component compositions of first, second, are prepared according to a certain percentage when using；
The 4th, copper foil is impregnated to the adhesive prepared, and is stopped 2-4 hour in atmosphere, makes adhesive
Partially cured (commonly referred to as semi-solid preparation), i.e. adhesive not sagging, it is tack-free；
5th, start glass fibre control system, glass fibre is passed through steeping vat, adjust fiber speed, allow
Glue is impregnated with fiber, and general control is at 40-60 ms/min；
6th, according to the requirement of client, when certain thickness fiber is wound on core, then semi-solid preparation
Copper foil is laid on the glass fibers on request, is further continued for winding, until required thickness；
7th, curing process：Wrapping formed fiber reinforced plastic barrel to be put into baker heating is solidified, typically by
Room temperature is slowly raised to assigned temperature and stops heating, is incubated.Because the size and wall thickness of product are all incomplete
Equally, therefore, solidification temperature and hardening time are all different.General temperature control is in 150~210 DEG C of scopes
Interior, hardening time is between 1.5~2.5 hours；
8th, releasing process：With the demoulding of common winding product, generally using the extrusion method demoulding；
9th, aftertreatment technology：Surface Machining processing is carried out to product using technique for grinding.
The second aspect of the present invention is produced there is provided a kind of insulating cylinder with function of shielding using any of the above
Method is prepared.
The invention has the advantages that：
The present invention is on the basis of the insulating cylinder that transformer is generally used, to carry out innovative design, the insulating cylinder
Using epoxy resin as matrix, glass fiber reinforcement, using winding shaping process and special adhesive, makes copper
Paper tinsel is easily organically combined with fiberglass, is had glass fibre reinforced plastic cylinder and is insulated and two kinds of functions of shielding, meets change
Depressor manufacture require, through thermocycling, copper foil is non-foaming, does not loosen, the insulating properties of glass fibre reinforced plastic cylinder and
Shielding properties does not change, steady quality, and the requirement supporting with H grades of transformers is fully achieved.
Brief description of the drawings
Fig. 1 is the process chart of the production method with function of shielding insulating cylinder of the present invention.
Fig. 2 is the finished product of the insulating cylinder with function of shielding prepared by the present invention.
Embodiment
The embodiment provided with reference to embodiment the present invention elaborates.
Embodiment 1
The technological process of insulating cylinder of the production with function of shielding, has screen to produce diameter 500mm below
Cover functional insulation cylinder exemplified by：
1st, the releasing agent 295-3 estersil (manufacturer on the core chosen：Shanghai Resin Factory Co., Ltd.)
And install；
2nd, 50 kilograms of epoxy resin (E51), 40 kilograms of methyl tetrahydrochysene aniline, dimethylamine 0.25 are weighed respectively
Batching kettle kilogram is put into, stirring is opened, stirs 10 minutes, is put into steeping vat；
3rd, 509 2 kilograms of glue first components are taken, 1 kilogram of second component is put into deep bid container, carried out with scraper
Reconcile about 10 minutes, be then immersed in the copper foil cut in disk in glue about 2 minutes, then at leisure will
Copper foil is hauled out from glue and hung up.About 2 hours, some solidified copper foil glue, not sagging, can be by copper
Paper tinsel is laid on the cylinder of winding glass on request；
4th, regulation glass running speed is 45 meters per minute, the glue for making glass pass through in glue groove；
5th, by certain Winding theory, when the glass wound on core about 1mm thickness, car is suspended,
The copper foil of semi-solid preparation is laid, and is suitably fixed, and then proceedes to winding, until fiber reinforced plastic barrel wall thickness reaches 5mm
Stop；
6th, the product wound is put into baker, carries out resin solidification, 180 DEG C of temperature control, insulation 2
Hour, when temperature is cooled to 50~60 DEG C, product is taken out；
7th, be stripped and polished post processing to product.
Using above-mentioned same glue formula and production technology, produce different-diameter specification has function of shielding
Insulating cylinder, after tested, its Specifeca tion speeification are as follows：
Detection method：GB/T23100-2008
The laying of copper foil is carried out by transformer manufacturing unit design requirement, and the shield effectiveness of product is conformed to
Ask.
Described above is only the preferred embodiment of the present invention, it is noted that for the common of the art
Technical staff, on the premise of the inventive method is not departed from, can also make some improvement and supplement, these
Improve and supplement also should be regarded as protection scope of the present invention.
Claims (7)
1. the production method of the insulating cylinder with function of shielding, it is characterised in that use formed by winding glass reinforced plastic
Technique, during by the glass fiber winding of dipped resin adhesive liquid to core, being wound to certain thickness fiber,
The copper foil for the semi-solid preparation for impregnating adhesive is laid on the glass fibers, winding is further continued for, until required
Thickness, the described insulating cylinder with function of shielding is made by solidification, releasing process.
2. production method according to claim 1, it is characterised in that described insulating cylinder it is a diameter of
100mm~1100mm.
3. production method according to claim 1, it is characterised in that the original in described resin adhesive liquid
Expect for E51 epoxy resin, methyl tetrahydro phthalic anhydride, dimethylamine, weight ratio is (90-110): (75-85):
(0.4-0.6)。
4. production method according to claim 1, it is characterised in that the original in described resin adhesive liquid
Expect for E51 epoxy resin, methyl tetrahydro phthalic anhydride, dimethylamine, weight ratio is 100: 80: 0.5.
5. production method according to claim 1, it is characterised in that described adhesive is Red Star board
The glue of all-transparent 509.
6. production method according to claim 1, it is characterised in that specific steps include：
(A) according to the specification of product and requirement, manufacture or selection core, coating release agent are installed；
(B) preparation of glue：E51 epoxy resin：Methyl tetrahydro phthalic anhydride：The weight ratio of dimethylamine is 100:
80∶0.5；
(C) preparation of adhesive：The adhesive of selection is the glue of Red Star board all-transparent 509, the adhesive
It is made up of two kinds of components of first, second, ratio is prepared on request when using；
(D) copper foil is impregnated to the adhesive prepared, and stopped 2-4 hour in atmosphere, is made gluing
Agent is partially cured, commonly referred to as semi-solid preparation, i.e. adhesive not sagging, tack-free；
(E) start glass fibre control system, glass fibre is passed through steeping vat, adjust fiber speed,
Allow glue to be impregnated with fiber, control at 40-60 ms/min；
(F) as requested, when certain thickness fiber is wound on core, then the copper foil of semi-solid preparation
Laying on the glass fibers, is further continued for winding, until required thickness；
(G) curing process：Wrapping formed fiber reinforced plastic barrel is put into baker heating and solidified, by room temperature
Slowly it is raised to assigned temperature and stops heating, be incubated, temperature control is in the range of 150~210 DEG C, solidification
Time is between 1.5~2.5 hours；
(H) be stripped and polish post processing.
7. a kind of insulating cylinder with function of shielding, it is characterised in that any described using claim 1-6
Production method prepare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610102444.5A CN107123526B (en) | 2016-02-25 | 2016-02-25 | The production method of insulating cylinder with function of shielding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610102444.5A CN107123526B (en) | 2016-02-25 | 2016-02-25 | The production method of insulating cylinder with function of shielding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107123526A true CN107123526A (en) | 2017-09-01 |
| CN107123526B CN107123526B (en) | 2019-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610102444.5A Active CN107123526B (en) | 2016-02-25 | 2016-02-25 | The production method of insulating cylinder with function of shielding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016212A (en) * | 2019-12-31 | 2020-04-17 | 溧阳伊科创绝缘材料技术有限公司 | Manufacturing process of gun nozzle insulating tube of high-temperature gas shielded welding gun |
| CN115401960A (en) * | 2022-09-01 | 2022-11-29 | 哈尔滨玻璃钢研究院有限公司 | Resin-based composite material with high electromagnetic shielding efficiency and forming method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09260153A (en) * | 1996-03-22 | 1997-10-03 | Toshiba Corp | Gas insulated transformer |
| CN203260458U (en) * | 2012-12-27 | 2013-10-30 | 正泰电气股份有限公司 | Electrostatic shielding device for dry-type isolation transformer of more than 6kV |
| CN203491072U (en) * | 2013-07-31 | 2014-03-19 | 鲁特电工股份有限公司 | Grounding shielding device for dry-type rectifier excitation transformer |
| CN204303515U (en) * | 2014-12-31 | 2015-04-29 | 金盘电气集团（上海）有限公司 | With the dry type phase-shifting rectifier transformer of function of shielding insulating cylinder |
| CN204558222U (en) * | 2015-05-05 | 2015-08-12 | 上海和鸣变压器有限公司 | A kind of superconducting transformer glass fibre reinforced plastic cylinder |
| CN205028764U (en) * | 2015-09-25 | 2016-02-10 | 大同Abb牵引变压器有限公司 | Traction transformer's shielding subassembly |
-
2016
- 2016-02-25 CN CN201610102444.5A patent/CN107123526B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09260153A (en) * | 1996-03-22 | 1997-10-03 | Toshiba Corp | Gas insulated transformer |
| CN203260458U (en) * | 2012-12-27 | 2013-10-30 | 正泰电气股份有限公司 | Electrostatic shielding device for dry-type isolation transformer of more than 6kV |
| CN203491072U (en) * | 2013-07-31 | 2014-03-19 | 鲁特电工股份有限公司 | Grounding shielding device for dry-type rectifier excitation transformer |
| CN204303515U (en) * | 2014-12-31 | 2015-04-29 | 金盘电气集团（上海）有限公司 | With the dry type phase-shifting rectifier transformer of function of shielding insulating cylinder |
| CN204558222U (en) * | 2015-05-05 | 2015-08-12 | 上海和鸣变压器有限公司 | A kind of superconducting transformer glass fibre reinforced plastic cylinder |
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| Title |
|---|
| 黄北: "玻璃纤维缠绕成型绝缘筒的研制", 《绝缘材料通讯》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016212A (en) * | 2019-12-31 | 2020-04-17 | 溧阳伊科创绝缘材料技术有限公司 | Manufacturing process of gun nozzle insulating tube of high-temperature gas shielded welding gun |
| CN115401960A (en) * | 2022-09-01 | 2022-11-29 | 哈尔滨玻璃钢研究院有限公司 | Resin-based composite material with high electromagnetic shielding efficiency and forming method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107123526B (en) | 2019-01-11 |
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