CN101794659A - Shielding shell of low frequency transformer - Google Patents
Shielding shell of low frequency transformer Download PDFInfo
- Publication number
- CN101794659A CN101794659A CN200910232431A CN200910232431A CN101794659A CN 101794659 A CN101794659 A CN 101794659A CN 200910232431 A CN200910232431 A CN 200910232431A CN 200910232431 A CN200910232431 A CN 200910232431A CN 101794659 A CN101794659 A CN 101794659A
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- coating
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- shielding
- frequency transformer
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention provides a shielding shell of a low frequency transformer, wherein a shielding casing is arranged outside the transformer, the casing is made of nonmetal material or cheap metal material; the inner surface and outer surface of the casing are separately coated with a shielding coating; the main component of the coating is rare earth alloy powder, and the coating also contains titanate coupling agent, nonionic high molecular glucan used as surface modifier of iron powder, anionic high molecular sodium alginate used as diluent of iron powder and thermoplastic acrylic acid resin used as adhesive, and the prepared fine powder coating is coated on the inner and outer surfaces of the shielding casing. The significant effect of the invention is to install the shielding protective casing on the low frequency transformer; in order to save cost, cheap material can be used to prepare the shielding casing; and some magnetic materials are coated on the inner and outer surfaces of the casing, and the adopted rare earth alloy powder not only has good permanent magnetism, but also saves the cost.
Description
Technical field
The present invention relates to a kind of shield shell, especially a kind of shield shell of low-frequency transformer.
Background technology
Along with the fast development of technology such as electronics, communication, electromagnetic radiation has become a kind of new pollutant sources, and the World Health Organization classifies electromagnetic radiation pollution as third place in the world big public hazards.A series of problems such as the electromagnetic radiation pollution meeting causes that electromagnetic interference, electromagnetic environment pollution and electromagnetic information are divulged a secret.The research major part in past concentrates on the radiation hazradial bundle of electric field.Find that by a large amount of investigation the harm of low frequency magnetic field is particularly serious now.On the one hand, the magnetic interference of low frequency magnetic field generation is the key factor that influences other electronic electric equipment operate as normal.Near the image of the computer for example, the low frequency magnetic field that engine produced can make and reading and communication equipment produce distortion.On the other hand, low frequency magnetic field can make central nervous system disorder, the cardiovascular system imbalance of human body, and increases the incidence of disease of leukaemia, brain tumor, breast cancer.Therefore, low frequency magnetic field can seriously jeopardize national politics, military affairs and social safety, and the radiation of low frequency magnetic field is employed prevention and control measures seems very necessary.
The method that reduces the low frequency magnetic field radiation has a lot, and except that reasonable line arrangement structurally, rationally settle the component, it also is a kind of effective ways that the employing magnetic shielding material carries out magnetic screen.For example, set up magnetic shield room, electric power, electronic equipment casing are carried out magnetic screen, holding wire and power line are shielded, reach the purpose that prevents that external magnetic field from disturbing equipment, device with magnetic shielding material with magnetic shielding material.Therefore, from the material angle, research and develop particularly necessity of new low-frequency electromagnetic wave magnetic shielding material.Traditional low frequency magnetic shielding material adopts homogenous materials such as sheet metal, thin slice, strip more, makes the low frequency magnetic shielding material as iron commonly used, silicon steel sheet, stainless steel, permalloy etc.Material often is machined into thin plate, thin slice or strip, and this not only can reduce the magnetic shield performance of material, and makes energy consumption increase, cost up, cost performance reduce, use inconvenient.
Summary of the invention
At the problems referred to above, the invention provides a kind of shield shell of low-frequency transformer.
A kind of shield shell of low-frequency transformer, it is characterized in that outside transformer, also being provided with a screening can, the main component of shell itself is that nonmetallic materials also can be the cheap metal material, surface and outer surface all scribble curtain coating within it, the main component of coating is a rare earth alloy powder, wherein also add titanate coupling agent, select nonionic macromolecule glucan and anionic polymeric hydantoin mosanom surface modifier as iron powder, diluent and thermoplastic acrylic resin are as adhesive, and the micro mist coating that is made into is coated on the surfaces externally and internally of screening can.
Remarkable result of the present invention is to be provided with the shielding protection shell on low-frequency transformer; in order to save cost; can adopt cheap material to make screening can; and the curtain coating that some magnetic materials of coating are made on its shell surfaces externally and internally; the rare earth alloy powder that adopts not only has good permanent magnetism, and has saved cost.
Embodiment
Below the present invention will be further described: outside transformer, also be provided with a screening can, the main component of shell itself is that nonmetallic materials also can be the cheap metal material, surface and outer surface all scribble curtain coating within it, the main component of coating is a rare earth alloy powder, wherein also add titanate coupling agent, select nonionic macromolecule glucan and anionic polymeric hydantoin mosanom surface modifier as iron powder, diluent and thermoplastic acrylic resin are as adhesive, the micro mist coating that is made into is coated on the surfaces externally and internally of screening can, and the coating surface at neodymium iron boron carries out Passivation Treatment to reduce corrosion simultaneously.
Apply the present invention in the shielding protection of low-frequency transformer; on low-frequency transformer, be provided with the shielding protection shell; in order to save cost; can adopt cheap material to make screening can; and the curtain coating that some magnetic materials of coating are made on its shell surfaces externally and internally; the rare earth alloy powder that adopts not only has good permanent magnetism, and has saved about 30% cost.
Claims (3)
1. the shield shell of a low-frequency transformer, it is characterized in that outside transformer, also being provided with a screening can, the main component of shell itself is that nonmetallic materials also can be the cheap metal material, surface and outer surface all scribble curtain coating within it, the main component of coating is a rare earth alloy powder, wherein also add titanate coupling agent, select nonionic macromolecule glucan and anionic polymeric hydantoin mosanom surface modifier as iron powder, diluent and thermoplastic acrylic resin are as adhesive, and the micro mist coating that is made into is coated on the surfaces externally and internally of screening can.
2. the shield shell of low-frequency transformer as claimed in claim 1, it is characterized in that outside transformer, also being provided with a screening can, the main component of shell itself is that nonmetallic materials also can be the cheap metal material, and surface and outer surface all scribble curtain coating within it.
3. the shield shell of low-frequency transformer as claimed in claim 1, the main component that it is characterized in that coating is a rare earth alloy powder, wherein also add titanate coupling agent, select nonionic macromolecule glucan and anionic polymeric hydantoin mosanom as surface modifier, diluent and the thermoplastic acrylic resin of iron powder as adhesive, the micro mist coating that is made into is coated on the surfaces externally and internally of screening can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232431A CN101794659A (en) | 2009-11-27 | 2009-11-27 | Shielding shell of low frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232431A CN101794659A (en) | 2009-11-27 | 2009-11-27 | Shielding shell of low frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101794659A true CN101794659A (en) | 2010-08-04 |
Family
ID=42587271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910232431A Pending CN101794659A (en) | 2009-11-27 | 2009-11-27 | Shielding shell of low frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101794659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655091A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Low frequency transformer shielding layer |
| CN105830181A (en) * | 2013-12-12 | 2016-08-03 | 皇家飞利浦有限公司 | Method to enable standard alternating current (AC)/direct current (DC) power adapters to operate in high magnetic fields |
-
2009
- 2009-11-27 CN CN200910232431A patent/CN101794659A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105830181A (en) * | 2013-12-12 | 2016-08-03 | 皇家飞利浦有限公司 | Method to enable standard alternating current (AC)/direct current (DC) power adapters to operate in high magnetic fields |
| US10262788B2 (en) | 2013-12-12 | 2019-04-16 | Koninklijke Philips N.V. | Method to enable standard alternating current (AC)/direct current (DC) power adapters to operate in high magnetic fields |
| CN105655091A (en) * | 2014-10-23 | 2016-06-08 | 国家电网公司 | Low frequency transformer shielding layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100804 |