CN105590743B - Transformer and insulating material thereof - Google Patents

Transformer and insulating material thereof Download PDF

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Publication number
CN105590743B
CN105590743B CN201610078358.5A CN201610078358A CN105590743B CN 105590743 B CN105590743 B CN 105590743B CN 201610078358 A CN201610078358 A CN 201610078358A CN 105590743 B CN105590743 B CN 105590743B
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China
Prior art keywords
layer
silica gel
thickness
parts
transformer
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Expired - Fee Related
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CN201610078358.5A
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Chinese (zh)
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CN105590743A (en
Inventor
陈冲
李红菊
赵瑞锋
张丹丹
黄全振
潘海洋
魏鑫鑫
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Zhengzhou Technical College
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Zhengzhou Technical College
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Priority to CN201610078358.5A priority Critical patent/CN105590743B/en
Publication of CN105590743A publication Critical patent/CN105590743A/en
Application granted granted Critical
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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/42—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes polyesters; polyethers; polyacetals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Insulating Of Coils (AREA)
  • Laminated Bodies (AREA)
  • Insulating Bodies (AREA)

Abstract

A transformer comprises an iron core, a primary coil installed on the iron core to form low voltage, a secondary coil located on the outer side of the primary coil to form high voltage, and a peripheral shield simulating coil arranged on the outer side of the secondary coil, wherein a multi-layer insulating material is arranged between the secondary coil and the primary coil and between the secondary coil and the peripheral shield simulating coil in a wrapping mode, the insulating material comprises a mica paper layer, a polyester film layer, a glass cloth layer, a wood material layer and a silica gel layer, and each layer contains filler particles. According to the transformer and the insulating material thereof, high electrical insulating property, heat resistance, wrapping property, oxidation resistance and elasticity of the insulating material can be guaranteed, and the adopted insulating material has extremely high dielectric constant and tensile strength.

Description

Transformer and its insulating materials
Technical field
The present invention relates to a kind of transformer and its insulating materials.
Background technology
In the prior art, rubber or plastics are commonly used and makees insulator, but common rubber or plastic insulation cannot meet electricity The requirement such as mechanical, electrical device and light rail occasion higher.
Motor control is become increasingly complex, and its cabling requirements amount is also necessarily increased, but the sky of electrical-mechanical control device Between be limited, it requires as far as possible reduce cable insulation thickness to reduce the outside diameter of cable.This requires to improve insulation material The temperature resistant grade of material improves mechanical and physical performance, the oil resistance of insulating materials to improve cable to improve the current-carrying capacity of cable Security performance.
The content of the invention
To achieve the above object, the present invention provides a kind of transformer, including iron core, the formation low-voltage on iron core Primary winding, the high-tension secondary coil of formation on the outside of primary winding and the outer circumferential side screen being arranged on the outside of secondary coil Former-wound coil is covered, multi-layer insulation is wrapped respectively between secondary coil and primary winding, periphery side shield former-wound coil, its In, insulating materials includes：Mica paper layer, laminated polyester film, glass fabric layer, wood materials layer and three layers of layer of silica gel, and each layer In contain filler grain；
Wherein, in the insulating materials, putting in order for each layer is followed successively by：Mica paper layer, the first layer of silica gel, wood materials Layer, the second layer of silica gel, glass fabric layer, the 3rd layer of silica gel and laminated polyester film；
Described filler particle is silica or cupric oxide, and the particle diameter of described filler particle is between 20-90nm；
The mica paper layer is in terms of mass fraction including mica 100-110 parts, boric acid 3-4 parts, chlorinated paraffin 4-5 parts, sea 1-2 parts of afrodite powder, viscose fiber 8-9 parts, urea 1-2 parts, polyvinyl alcohol 1-4 parts, the thickness of the mica paper layer is between 0.4- 0.45mm；
The laminated polyester film includes inorganic particulates of the 35-45% in addition to above-mentioned filler grain, the polyester film The thickness of layer is between 0.2-1.2mm；
The upper and lower surface of the wood materials layer is respectively provided with gel rubber material, and the thickness of the wood materials layer is between 0.1- 0.2mm；
The thickness of the glass fabric layer is between 0.3-0.6mm；
First layer of silica gel, the second layer of silica gel, the thickness of the 3rd layer of silica gel are between 2-6mm；
The gross thickness of the insulating materials is between 7-20mm.
Wherein, the particle diameter of described filler particle is between 40-60nm.
Wherein, the thickness of the mica paper layer is 0.42mm.
Wherein, the thickness of the laminated polyester film is between 0.5-0.8mm.
Wherein, the thickness of the glass fabric layer is between 0.4-0.5mm.
Wherein, the thickness of first layer of silica gel is between 4-5mm.
Wherein, the thickness of second layer of silica gel is between 4-5mm.
Wherein, the thickness of the 3rd layer of silica gel is between 4-5mm.
Wherein, the gross thickness of the insulating materials is between 13-16mm.
Present invention simultaneously provides a kind of insulating materials, including：Mica paper layer, wood materials layer, glass fabric layer, polyester film Layer and three layers of layer of silica gel, and contain filler grain in each layer；
Wherein, in the insulating materials, putting in order for each layer is followed successively by：Mica paper layer, the first layer of silica gel, wood materials Layer, the second layer of silica gel, glass fabric layer, the 3rd layer of silica gel and laminated polyester film；
Described filler particle is silica or cupric oxide, and the particle diameter of described filler particle is between 20-90nm；
The mica paper layer is in terms of mass fraction including mica 100-110 parts, boric acid 3-4 parts, chlorinated paraffin 4-5 parts, sea 1-2 parts of afrodite powder, viscose fiber 8-9 parts, urea 1-2 parts, polyvinyl alcohol 1-4 parts, the thickness of the mica paper layer is between 0.4- 0.45mm；
The laminated polyester film includes inorganic particulates of the 35-45% in addition to above-mentioned filler grain, the polyester film The thickness of layer is between 0.2-1.2mm；
The upper and lower surface of the wood materials layer is respectively provided with gel rubber material, and the thickness of the wood materials layer is between 0.1- 0.2mm；
The thickness of the glass fabric layer is between 0.3-0.6mm；
First layer of silica gel, the second layer of silica gel, the thickness of the 3rd layer of silica gel are between 2-6mm；
The gross thickness of the insulating materials is between 7-20mm.
The present invention provide transformer and its insulating materials, its can guarantee that the good electrical insulating property of insulating materials, heat resistance, Wrapped property, inoxidizability and elasticity, its insulating materials for using have high dielectric constant and tensile strength.
Brief description of the drawings
Fig. 1：The partial cross section stereogram of transformer.
Fig. 2：The structural representation of the preferred embodiment of insulating materials one.
Description of reference numerals
1 iron core
2 primary windings
3 secondary coils
4 insulating materials
5 periphery side shield former-wound coils
41 mica paper layers
42 first layer of silica gel
43 wood materials layer
44 second layer of silica gel
45 glass fabric layers
46 the 3rd layer of silica gel
47 laminated polyester films
48 filler grains.
Specific embodiment
As shown in figure 1, being the partial cross section stereogram of transformer of the invention, the transformer that the present invention is provided includes iron core 1st, the primary winding 2 of the formation low-voltage on iron core 1, the outside of primary winding 2 the high-tension secondary coil 3 of formation with And it is arranged on the periphery side shield former-wound coil 5 in the outside of secondary coil 3, secondary coil 3 and primary winding 2, periphery side shield mould Intend wrapping multi-layer insulation 4 between coil 5, i.e. insulating materials 4 is paperwrapped in the periphery of secondary coil 3, and its outside supports one Between secondary coil 2 and periphery side shield former-wound coil 5, secondary coil 3 and primary winding 2 and periphery side shield former-wound coil 5 Distance preferably greater than 60mm, so as at least be wrapped respectively between secondary coil 3 and primary winding 2 and periphery side shield former-wound coil 5 Around three-layer insulated material 4, it is ensured that do not done mutually between secondary coil 3 and primary winding 2 and periphery side shield former-wound coil 5 Disturb.
As shown in Fig. 2 the structural representation of the preferred embodiment for insulating materials of the invention, wherein, insulating materials 4 In each putting in order for layer material be followed successively by：Mica paper layer 41, the first layer of silica gel 42, wood materials layer the 43, second layer of silica gel 44, Contain filler grain 48 in glass fabric layer 45, the 3rd layer of silica gel 46 and laminated polyester film 47, also, each layer.
Mica paper layer 41 is used as insulating materials outermost layer material, including mica 100-110 parts in terms of mass fraction, boric acid 3- 4 parts, chlorinated paraffin 4-5 parts, sepiolite powder 1-2 parts, viscose fiber 8-9 parts, urea 1-2 parts, polyvinyl alcohol 1-4 parts, viscose is fine The addition of peacekeeping polyvinyl alcohol, can significantly improve the adhesive force on mica paper surface, pulling force when mica paper is produced be improved, while energy Anti- dielectric force, high-insulativity, the thermal insulation of natural mica are further improved, the addition of chlorinated paraffin further increases mica The water proofing property of paper, insulating properties, anti-dielectric force, thermal insulation, the mica paper layer 41 that the present invention is provided have good tensile strength, energy Improve the wrapped property of insulating materials 4.
The upper and lower surface of the wood materials layer 43 is respectively provided with gel rubber material (not shown), the setting of gel rubber material, a side Face can increase the wrapped property and pliability of wood materials layer 43, prevent the wood materials layer 43 during wrapping of insulating materials 4 Jackknifing, while wood materials layer 43 and the adhesion strength between the first layer of silica gel 42 and the second layer of silica gel 44 can be increased, while not shadow Ring wood materials performance in itself (such as：Inoxidizability).
The setting of the first layer of silica gel 42, the second layer of silica gel 44 and the 3rd layer of silica gel 46, can not only further improve insulation material Material 4 insulating properties, while can improve mica paper layer 41, wood materials layer 43, between glass fabric layer 45 and laminated polyester film 47 Adherence, prevent the layering of insulating materials 4, strengthen its wrapped property and elasticity.
The addition of filler grain 48, energy high degree improves the insulating properties of insulating materials 4, while insulating materials can be improved 4 heat conductivility, on this basis, while same insulating properties is realized, can reduce the materials and thickness of each layer material, save Cost；Meanwhile, the addition of filler grain 48 can prevent the stripping between each layer material in insulating materials 4, strengthen the first layer of silica gel 42nd, the adhering effect of the second layer of silica gel 44 and the 3rd layer of silica gel 46.
When filler grain 48 is from silica or cupric oxide, its improvement to the above-mentioned performance of insulating materials 4 is most obvious, therefore In the present invention, filler grain 48 is preferably silica or cupric oxide.
When the particle diameter of filler grain 48 is smaller, its improvement to the above-mentioned performance of insulating materials 4 is not obvious enough, and filler grain 48 When particle diameter is larger, then easily cohesion, the improvement to the above-mentioned performance of insulating materials 4 declines on the contrary, described to fill out during specific implementation Expect the particle diameter of particle 48 between 20-90nm, it is preferred that when between 40-60nm, it is to the heat conductivility of insulating materials 4, insulation The improvement of performance and prevent the effect peeled off between each layer material in insulating materials 4 from becoming apparent from.
Glass fabric layer 45 have insulation, it is adiabatic, corrosion-resistant, do not burn, the performance such as high temperature resistant, high intensity, meanwhile, glass cloth Layer the 45, the 3rd layer of silica gel 46 and laminated polyester film 47 setting, it is ensured that insulating materials 4 it is good elasticity and toughness, make its With good wrapped property, inoxidizability and tensile strength during wrapping high-tension coil.
Laminated polyester film 47 as the opposite side of insulating materials 4 outermost layer material, including 35-45% remove above-mentioned filler grain Inorganic particulate in addition, the addition of inorganic particulate can guarantee that the good heat endurance of laminated polyester film 47, prevent insulating materials 4 Deformation.
From from the aspect of insulating properties, heat conductivility etc., mica paper layer 41, wood materials layer 43, glass fabric layer 45 and The thickness of laminated polyester film 47 is more thick better, however, considering from wrapped property, mica paper layer 41, wood materials layer 43, glass fabric layer 45 and the thickness of laminated polyester film 47 get over Bao Yuehao, in the specific implementation, preferably the thickness of mica paper layer 41 is between 0.4- 0.45mm, between 0.1-0.2mm, the thickness of glass fabric layer 45 is between 0.3-0.6mm, polyester film for the thickness of wood materials layer 43 Between 0.2-1.2mm, more preferably, preferably the thickness of mica paper layer 41 is 0.42mm, the thickness of glass fabric layer 45 to the thickness of layer 47 Between 0.4-0.5mm, the thickness of laminated polyester film 47 is between 0.5-0.8mm.
Consider in terms of wrapped property, insulating properties and thermal conductivity etc., the first layer of silica gel 42, the second layer of silica gel 44 and The thickness of the 3rd layer of silica gel 46 is preferably between 2-6mm, more preferably, is preferably between 4-5mm.
Comprehensive each mica paper layer 41, the 43, second layer of silica gel 44 of the first layer of silica gel 42, wood materials layer, glass fabric layer 45, the The thickness of three layer of silica gel 46 and laminated polyester film 47, the gross thickness of preferred insulative material between 7-20mm, more preferably, preferably its Gross thickness is between 13-16mm.
Table 1 is the Performance comparision of the insulating materials for providing of the invention and existing insulating materials, wherein, comparative example 1-4 distinguishes Be commercially available existing insulating materials, from table 1, it is apparent that the present invention provide insulating materials, its The thermal conductivity prior art that compares is decreased obviously, and it can still be used at a high temperature of 150 degrees Celsius, so that of the invention Insulating materials there is good heat resistance, and its tensile strength is also higher by much than existing insulating materials, and this point is same When ensure that insulating materials good wrapped property and elasticity.
Table 1：Insulating materials of the invention and prior art insulating materials performance comparison
The present invention Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4
Tensile strength (Mpa) 33.2 19.5 18.5 17.3 20.5
Maximum operation (service) temperature (degree Celsius) 155 110 98 87 113
Thermal conductivity (W/mK) 0.022 0.054 0.072 0.088 0.061
Thermal resistance (m2K/W) 3.21 2.17 1.98 1.88 1.65
To sum up, the present invention is provided transformer and insulating materials, can guarantee that the good electrical insulating property of insulating materials, heat-resisting Property, wrapped property, inoxidizability, elasticity, its insulating materials for using have high dielectric constant and tensile strength, are used in change When on depressor, the interference between first coil on transformer, the second coil and periphery side shield former-wound coil can be prevented, improved The stability of equipment.
Although the present invention is illustrated using above-mentioned preferred embodiment, so it is not limited to protection model of the invention Enclose, any those skilled in the art are not being departed within the spirit and scope of the present invention, and various changes are carried out with respect to above-described embodiment It is dynamic still to belong to the scope that the present invention is protected with modification, therefore protection scope of the present invention is by being defined that claims are defined.

Claims (10)

1. the shape on the outside of a kind of transformer, including iron core, the primary winding of formation low-voltage on iron core, primary winding Into high-tension secondary coil, it is characterised in that：The transformer also includes being arranged on the periphery side shield mould on the outside of secondary coil Intend coil, multi-layer insulation is wrapped respectively between secondary coil and primary winding, periphery side shield former-wound coil, wherein, absolutely Edge material includes：Mica paper layer, wood materials layer, glass fabric layer, laminated polyester film and three layers of layer of silica gel, and contain in each layer Filler grain；
Wherein, in the insulating materials, putting in order for each layer is followed successively by：Mica paper layer, the first layer of silica gel, wood materials layer, Second layer of silica gel, glass fabric layer, the 3rd layer of silica gel and laminated polyester film；
Described filler particle is silica or cupric oxide, and the particle diameter of described filler particle is between 20-90nm；
The mica paper layer is in terms of mass fraction including mica 100-110 parts, boric acid 3-4 parts, chlorinated paraffin 4-5 parts, sepiolite Powder 1-2 parts, viscose fiber 8-9 parts, urea 1-2 parts, polyvinyl alcohol 1-4 parts, the thickness of the mica paper layer is between 0.4- 0.45mm；
The laminated polyester film includes inorganic particulates of the 35-45% in addition to above-mentioned filler grain, the laminated polyester film Thickness is between 0.2-1.2mm；
The upper and lower surface of the wood materials layer is respectively provided with gel rubber material, and the thickness of the wood materials layer is between 0.1-0.2mm；
The thickness of the glass fabric layer is between 0.3-0.6mm；
First layer of silica gel, the second layer of silica gel, the thickness of the 3rd layer of silica gel are between 2-6mm；
The gross thickness of the insulating materials is between 7-20mm.
2. transformer as claimed in claim 1, it is characterised in that：The particle diameter of described filler particle is between 40-60nm.
3. transformer as claimed in claim 1, it is characterised in that：The thickness of the mica paper layer is 0.42mm.
4. transformer as claimed in claim 1, it is characterised in that：The thickness of the laminated polyester film is between 0.5-0.8mm.
5. transformer as claimed in claim 1, it is characterised in that：The thickness of the glass fabric layer is between 0.4-0.5mm.
6. transformer as claimed in claim 1, it is characterised in that：The thickness of first layer of silica gel is between 4-5mm.
7. transformer as claimed in claim 1, it is characterised in that：The thickness of second layer of silica gel is between 4-5mm.
8. transformer as claimed in claim 1, it is characterised in that：The thickness of the 3rd layer of silica gel is between 4-5mm.
9. transformer as claimed in claim 1, it is characterised in that：The gross thickness of the insulating materials is between 13-16mm.
10. a kind of insulating materials, it is characterised in that including：Mica paper layer, wood materials layer, glass fabric layer, laminated polyester film and Three layers of layer of silica gel, and contain filler grain in each layer；
Wherein, in the insulating materials, putting in order for each layer is followed successively by：Mica paper layer, the first layer of silica gel, wood materials layer, Second layer of silica gel, glass fabric layer, the 3rd layer of silica gel and laminated polyester film；
Described filler particle is silica or cupric oxide, and the particle diameter of described filler particle is between 20-90nm；
The mica paper layer is in terms of mass fraction including mica 100-110 parts, boric acid 3-4 parts, chlorinated paraffin 4-5 parts, sepiolite Powder 1-2 parts, viscose fiber 8-9 parts, urea 1-2 parts, polyvinyl alcohol 1-4 parts, the thickness of the mica paper layer is between 0.4- 0.45mm；
The laminated polyester film includes inorganic particulates of the 35-45% in addition to above-mentioned filler grain, the laminated polyester film Thickness is between 0.2-1.2mm；
The upper and lower surface of the wood materials layer is respectively provided with gel rubber material, and the thickness of the wood materials layer is between 0.1-0.2mm；
The thickness of the glass fabric layer is between 0.3-0.6mm；
First layer of silica gel, the second layer of silica gel, the thickness of the 3rd layer of silica gel are between 2-6mm；
The gross thickness of the insulating materials is between 7-20mm.
CN201610078358.5A 2016-02-03 2016-02-03 Transformer and insulating material thereof Expired - Fee Related CN105590743B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610078358.5A CN105590743B (en) 2016-02-03 2016-02-03 Transformer and insulating material thereof

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Application Number Priority Date Filing Date Title
CN201610078358.5A CN105590743B (en) 2016-02-03 2016-02-03 Transformer and insulating material thereof

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CN105590743B true CN105590743B (en) 2017-05-24

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Publication number Priority date Publication date Assignee Title
CN108305764B (en) * 2018-01-19 2020-09-08 全球能源互联网研究院有限公司 Dry-type high-frequency transformer

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DE102010029513A1 (en) * 2010-05-31 2011-02-24 Wacker Chemie Ag Insulation with layer structure
CN202422885U (en) * 2012-01-13 2012-09-05 嘉兴荣泰雷帕司绝缘材料有限公司 Insulating material for electromagnetic wire

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