CN106920639A - Cast-type mutual inductor is pressed in a kind of environment-friendly type - Google Patents
Cast-type mutual inductor is pressed in a kind of environment-friendly type Download PDFInfo
- Publication number
- CN106920639A CN106920639A CN201710155825.4A CN201710155825A CN106920639A CN 106920639 A CN106920639 A CN 106920639A CN 201710155825 A CN201710155825 A CN 201710155825A CN 106920639 A CN106920639 A CN 106920639A
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- CN
- China
- Prior art keywords
- cast
- mutual inductor
- environment
- winding
- type
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- 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
- H01F27/02—Casings
- H01F27/022—Encapsulation
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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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Abstract
The invention discloses pressing cast-type mutual inductor in a kind of environment-friendly type, including major insulation part, first winding, non-master insulated part, secondary shield box, base plate and Secondary Winding, semiconductor crimped paper screen layer is surrounded by outside first winding and Secondary Winding, the major insulation part is formed by the cast polyurethane of cleavable recycling at high operating temperatures；The non-master insulated part for playing mechanical support is inorganic filler.The present invention effectively splits middle pressure cast-type mutual inductor insulated part and mechanical support part, insulated part is using recyclable polyurethane as major insulation, mechanical support part uses environmentally safe, low cost, the recyclable inorganic filler as construction material, significantly improve the electric property of middle pressure cast-type mutual inductor, reduce shelf depreciation, prevent the aging of product from ftractureing, or even puncture and burst, improve product reliability of operation.
Description
Technical field
The invention belongs to middle pressure transmission ＆ distribution electro-technical field, cast-type mutual inductor is pressed in more particularly to a kind of environment-friendly type.
Background technology
At present, the middle pressure cast-type mutual inductor in 10 ~ 40.5kV power systems（Fig. 1）Generally made using epoxy resin
It is castable, Fig. 1-1 is existing middle pressure pouring current transformer structural representation, and Fig. 1-2 is existing middle pressure cast-type
Voltage transformer structural representation.Mainly by epoxy resin 11, first winding 12, Secondary Winding 13, secondary shield box 14, base plate 15
Composition.
Existing epoxy pouring type transformer, after the aging of product is scrapped, epoxy resin cannot be degraded, and product integrally can only
Buried underground, the obstinate rubbish as the Nature.If Epoxy burns processed, substantial amounts of carcinogen will be produced, endangered
Evil health and pollution environment.
Existing epoxy pouring type transformer, major insulation and supporting role are born by substantial amounts of epoxy resin, and big portion
Epoxy resin is divided to be to play a supporting role, in small product size, epoxy resin even can account for more than 80%.In view of mechanicalness
Can, the filler of vast scale can be added in epoxy resin, this filler can cause castable sticky, influence vacuum outgas effect,
It is easy to produce bubble during after solidification, so that shelf depreciation is produced, and.Epoxy resin is during hot setting
Stress can be produced, and toughness is very poor, easily cracking during use, explosion phenomenon.
The content of the invention
For the problem for overcoming prior art to exist, it is an object of the invention to provide pressure cast-type mutual inductance in a kind of environment-friendly type
Device, the present invention fully analyzes the characteristic of middle pressure cast-type mutual inductor mould material, is especially considering that influence of the product to environment,
Effectively insulated part and mechanical support subregion are branched away, epoxy resin is replaced as castable using polyurethane, and
Interiors of products adds inorganic filler, can effectively reduce pollution of the transformer product to environment, with maximum society's effect
Benefit.Meanwhile, polyurethane excellent electric properties, mobility, toughness are all good, and normal temperature cure stress shrinks small, can significantly improve
The electric property of product, reduces shelf depreciation, improves product percent of pass, can prevent product from ftractureing or even puncturing explosion again, carries
The reliability of high product.Small product size can also be reduced, production cost is reduced.
The purpose of the present invention is achieved through the following technical solutions：
Press cast-type mutual inductor in a kind of environment-friendly type, including major insulation part, first winding, non-master insulated part, secondary shield box,
Base plate and Secondary Winding, it is characterised in that：Semiconductor crimped paper screen layer, the master are surrounded by outside first winding and Secondary Winding
Insulated part is formed by the cast polyurethane of cleavable recycling at high operating temperatures；Play the non-major insulation of mechanical support
Part is inorganic filler.
Further, the inorganic filler includes timber, concrete, electroceramics, glass.
The major insulation part is by by after vacuum drying treatment, vacuum injection is electric after being stirred under vacuum degassing at normal temperatures
Gas excellent performance, mobility, toughness all good polyurethane forms no bubble after solidification, the insulating barrier of low partial discharge is obtained.
In the present invention, insulating barrier is formed after urethane cures, play major insulation.In the inorganic of non-master insulated part addition
Filler plays mechanical support.When the aging of product is scrapped, polyurethane can at high operating temperatures cut recovery and use, in product
The Primary Conductor in portion, copper cash and silicon steel sheet also recyclable recycling.Inorganic filler can be used as construction material, and product owns
Parts can recycle, environment will not be polluted.
Compared with prior art, the present invention can effectively reduce pollution of the transformer product to environment, with maximum
Social benefit.Meanwhile, polyurethane excellent electric properties, mobility, toughness are all good, and normal temperature cure stress shrinks small, can be notable
Raising product electric property, reduce shelf depreciation, improve product percent of pass, can prevent again product ftracture in addition puncture it is quick-fried
Split, improve the reliability of product.Small product size can also be reduced, production cost is reduced.
Brief description of the drawings
Fig. 1-1 be in the prior art it is middle pressure pouring current transformer structural representation；
Fig. 1-2 be in the prior art it is middle pressure casting type voltage mutual inductor structural representation；
Fig. 2-1 is middle pressure pouring current transformer structural representation of the present invention；
Fig. 2-2 is the side view of Fig. 2-1；
Fig. 3-1 is middle pressure casting type voltage mutual inductor structural representation of the present invention；
Fig. 3-2 is the side view of Fig. 3-1.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Press cast-type mutual inductor in a kind of environment-friendly type, including middle pressure pouring current transformer and middle pressure cast-type voltage it is mutual
Sensor, Fig. 2-1 is middle pressure pouring current transformer structural representation of the present invention；Fig. 2-2 is the side view of Fig. 2-1；Figure
3-1 is middle pressure casting type voltage mutual inductor structural representation of the present invention；Fig. 3-2 is the side view of Fig. 3-1.Pressed in environment-friendly type
Cast-type mutual inductor includes major insulation part 1, first winding 2, non-master insulated part 3, secondary shield box 4, base plate 5 and Secondary Winding
6, semiconductor crimped paper screen layer is surrounded by outside first winding and Secondary Winding, it is externally provided with first winding and Secondary Winding main exhausted
Edge point, major insulation part is formed by the cast polyurethane of cleavable recycling at high operating temperatures；Play mechanical support
Non-master insulated part be inorganic filler.Inorganic filler is made up of materials such as timber, concrete, electroceramics, glass.
During making, inorganic filler is added in non-master insulated part, by after vacuum drying treatment, vacuum impregnating at normal temperatures
Enter the excellent electric properties after being stirred under vacuum degassing, mobility, toughness all good polyurethane form no bubble after solidification, low
The major insulation part of partial discharge.
Insulating barrier is formed after urethane cures, plays major insulation.Risen in the inorganic filler of non-master insulated part addition
Mechanical support is acted on.When the aging of product is scrapped, polyurethane can at high operating temperatures cut recovery and use, and interiors of products is once
Conductor, copper cash and silicon steel sheet also recyclable recycling.Inorganic filler can be used as construction material, all of parts of product
Can recycle, environment will not be polluted.
The present invention effectively splits middle pressure cast-type mutual inductor insulated part and mechanical support part, insulated part
Using recyclable polyurethane as major insulation, mechanical support part uses environmentally safe, low cost, recyclable work
It is the inorganic filler of construction material.Cast-type mutual inductor is pressed to efficiently solve conventional epoxy cast-type in this environment-friendly type mutual
Sensor cannot be reclaimed after scrapping, and can only be filled, and pollute the shortcoming of environment, and significantly improve the electricity of middle pressure cast-type mutual inductor
Gas performance, reduces shelf depreciation, prevents the aging of product from ftractureing, or even punctures and burst, and improves product reliability of operation.Together
When there are high mechanical strength, low cost and other advantages.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, any art
Personnel, without departing from the spirit and scope of the present invention, when a little modification and perfect can be made, therefore, protection model of the invention
Enclose to work as to be defined by claims and be defined.
Claims (3)
1. cast-type mutual inductor, including major insulation part are pressed in a kind of environment-friendly type（1）, first winding（2）, non-master insulated part
（3）, secondary shield box（4）, base plate（5）And Secondary Winding（6）, it is characterised in that：In first winding（2）And Secondary Winding（6）Outward
It is surrounded by semiconductor crimped paper screen layer, the major insulation part（1）By the polyurethane of cleavable recycling at high operating temperatures
Cast is formed；Play the non-master insulated part of mechanical support（3）It is inorganic filler.
2. cast-type mutual inductor is pressed in environment-friendly type according to claim 1, it is characterised in that：The inorganic filler includes
Timber, concrete, electroceramics, glass.
3. cast-type mutual inductor is pressed in environment-friendly type according to claim 1, it is characterised in that：The major insulation part（1）
By by after vacuum drying treatment, vacuum injection excellent electric properties, mobility, toughness after being stirred under vacuum degassing at normal temperatures
All good polyurethane（1）, no bubble is formed after solidification, the insulating barrier of low partial discharge is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155825.4A CN106920639A (en) | 2017-03-16 | 2017-03-16 | Cast-type mutual inductor is pressed in a kind of environment-friendly type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155825.4A CN106920639A (en) | 2017-03-16 | 2017-03-16 | Cast-type mutual inductor is pressed in a kind of environment-friendly type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106920639A true CN106920639A (en) | 2017-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710155825.4A Pending CN106920639A (en) | 2017-03-16 | 2017-03-16 | Cast-type mutual inductor is pressed in a kind of environment-friendly type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106920639A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597826A (en) * | 2018-04-27 | 2018-09-28 | 上海大互电力电器有限公司 | Totally-enclosed epoxy resins insulation voltage transformer |
| CN109130037A (en) * | 2018-08-13 | 2019-01-04 | 上海置信电气股份有限公司 | Current sensor epoxy is poured pretreating process and current sensor and its application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1648001A1 (en) * | 2004-10-15 | 2006-04-19 | KG Ritz Messwandler GmbH & Co. | Voltage transformer for railroad locomotive |
| CN205542361U (en) * | 2016-01-19 | 2016-08-31 | 常州欧瑞电气股份有限公司 | Voltage transformer with equalizer ring |
| CN106024336A (en) * | 2016-07-06 | 2016-10-12 | 江苏智达高压电气有限公司 | Combined and insulated intermediate-pressure cast instrument transformer |
-
2017
- 2017-03-16 CN CN201710155825.4A patent/CN106920639A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1648001A1 (en) * | 2004-10-15 | 2006-04-19 | KG Ritz Messwandler GmbH & Co. | Voltage transformer for railroad locomotive |
| CN205542361U (en) * | 2016-01-19 | 2016-08-31 | 常州欧瑞电气股份有限公司 | Voltage transformer with equalizer ring |
| CN106024336A (en) * | 2016-07-06 | 2016-10-12 | 江苏智达高压电气有限公司 | Combined and insulated intermediate-pressure cast instrument transformer |
Non-Patent Citations (2)
| Title |
|---|
| 卓昌明: "《塑料应用技术手册》", 31 May 2013, 机械工业出版社 * |
| 李俊贤: "《塑料工业手册 聚氨酯》", 31 July 1999, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597826A (en) * | 2018-04-27 | 2018-09-28 | 上海大互电力电器有限公司 | Totally-enclosed epoxy resins insulation voltage transformer |
| CN108597826B (en) * | 2018-04-27 | 2020-11-24 | 上海大一互电力电器有限公司 | Totally-enclosed epoxy resin insulation voltage transformer |
| CN109130037A (en) * | 2018-08-13 | 2019-01-04 | 上海置信电气股份有限公司 | Current sensor epoxy is poured pretreating process and current sensor and its application |
| CN109130037B (en) * | 2018-08-13 | 2019-11-05 | 上海置信电气股份有限公司 | Current sensor epoxy is poured pretreating process and current sensor and its application |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170704 |