CN216389032U - Superconducting transformer high-voltage winding lead and superconducting transformer high-voltage winding - Google Patents
Superconducting transformer high-voltage winding lead and superconducting transformer high-voltage winding Download PDFInfo
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- CN216389032U CN216389032U CN202122536277.4U CN202122536277U CN216389032U CN 216389032 U CN216389032 U CN 216389032U CN 202122536277 U CN202122536277 U CN 202122536277U CN 216389032 U CN216389032 U CN 216389032U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
Superconducting transformer high voltage winding wire, including high voltage winding wire rod and the compound insulating layer of parcel on high voltage winding wire rod, its characterized in that: the composite insulating layer comprises an insulating adhesion layer wound on the high-voltage winding wire and a low-temperature-resistant insulating layer solidified on the insulating adhesion layer. The composite insulating layer has good low-temperature resistance, small dielectric loss, low heating rate in a liquid nitrogen low-temperature environment and high insulation reliability, effectively prolongs the insulation life of the high-voltage winding of the transformer in the low-temperature environment, and ensures the use reliability of the high-voltage winding wire with the superconducting performance in the low-temperature environment so as to ensure the normal operation of the superconducting transformer coil in the low-temperature environment. The utility model also provides a transformer high-voltage winding.
Description
Technical Field
The utility model relates to a superconducting transformer high-voltage winding wire and a superconducting transformer high-voltage winding, and belongs to the technical field of transformer high-voltage windings.
Background
In recent years, the high-speed railway transportation in China is rapidly developed, and the rapid and comfortable electrified railway vehicle brings the change of turning over the sky and covering the land for the traveling life of people. The traction transformer is an important part of the electric locomotive and the motor train unit, and is an electric power source of important functions of traction, braking, communication and the like of the electric locomotive and the motor train unit. The current domestic traction transformer has the defects of large volume, heavy weight, low electrical efficiency and the like. Compared with the existing copper wire for the coil winding of the traction transformer, the second-generation high-temperature superconducting wire has the advantages of strong current carrying capacity, large electromagnetic density, no direct-current resistance, capability of reducing volume and weight by 30-40% under the same power, efficiency of over 99%, capability of bearing large overload, insensitivity to external environment temperature, easiness in obtaining large short-circuit impedance, no influence on electric efficiency and the like.
The transformer coil winding made of the second-generation high-temperature superconducting wire rod works in a liquid nitrogen low-temperature environment, the working temperature is about 65K (-208 ℃), and most insulating materials in the low-temperature environment have sudden changes of mechanical properties and cannot meet the technical requirements of the coil winding, so that the insulating protection of the surface of the superconducting wire rod needs to be carried out by adopting a high-performance insulating material which can adapt to the liquid nitrogen low-temperature environment. The utility model aims to ensure that energy conservation, consumption reduction and light weight of rail transit vehicles are realized, and the driving safety is ensured, and provides an insulation structure with excellent insulation performance and low-temperature resistance for a superconducting traction transformer of a railway electric locomotive.
SUMMERY OF THE UTILITY MODEL
The composite insulating layer in the superconducting transformer high-voltage winding wire provided by the utility model has the advantages of good low-temperature resistance, small dielectric loss, low heating rate in a liquid nitrogen low-temperature environment and high insulation reliability, effectively prolongs the insulation life of the transformer high-voltage winding in the low-temperature environment, and ensures the use reliability of a high-voltage winding wire with the superconducting performance in the low-temperature condition so as to ensure the normal operation of a superconducting transformer coil in the low-temperature environment. The utility model also provides a high-voltage winding of the superconducting transformer.
In order to achieve the purpose, the utility model adopts the technical scheme that:
superconducting transformer high voltage winding wire, including high voltage winding wire rod and the compound insulating layer of parcel on high voltage winding wire rod, its characterized in that: the composite insulating layer comprises an insulating adhesion layer wound on the high-voltage winding wire and a low-temperature-resistant insulating layer solidified on the insulating adhesion layer.
Preferably, the high-voltage winding wire is coated with a high-temperature superconducting coating made of yttrium barium copper oxide, and the composite insulating layer is wrapped on the high-temperature superconducting coating.
Preferably, the insulating adhesion layer is a polyimide film which is wound on the high-voltage winding wire in a lap wrapping mode, and the thickness of the insulating adhesion layer is 100-160 microns.
Preferably, the inner surface of the polyimide film is coated with an adhesive.
Preferably, the low-temperature-resistant insulating layer is an epoxy insulating impregnated glue layer, an organic silicon insulating impregnated glue layer, a polyester insulating impregnated glue layer or an alkyd insulating impregnated glue layer which is cured on the insulating adhesive layer after vacuum pressure impregnation.
Preferably, the thickness of the low temperature resistant insulating layer is 300 to 500 μm.
The superconducting transformer high-voltage winding is characterized in that: the superconducting transformer high-voltage winding wire is wound.
The utility model has the beneficial effects that:
1. the composite insulating layer in the superconducting transformer high-voltage winding wire comprises the insulating adhesion layer and the low-temperature-resistant insulating layer, the insulating adhesion layer is strong in adhesion force and good in adhesion property, the adhesion quality of the composite insulating layer is higher, the dielectric loss of the composite insulating layer is reduced, the probability that the composite insulating layer generates heat due to the dielectric loss is reduced, the composite insulating layer is good in low-temperature-resistant performance, small in dielectric loss, low in heating rate in a liquid nitrogen low-temperature environment, high in insulating reliability, and the insulating life of the transformer high-voltage winding in the low-temperature environment is effectively prolonged.
2. The high-voltage winding wire is coated with the high-temperature superconducting coating made of the yttrium barium copper oxide material, so that the high-voltage winding wire has superconducting performance, the insulating adhesion layer is a polyimide film, the insulating performance is good, the dielectric loss is low, the low-temperature-resistant insulating layer is an insulating impregnated glue layer, the liquid nitrogen low-temperature-resistant performance is good, the composite insulating layer is excellent in electrical performance, high in electrical breakdown strength and lightning impact strength and high in insulating reliability, the use reliability of the high-voltage winding wire with the superconducting performance on a low-temperature condition is guaranteed, and the normal operation of a superconducting transformer coil in a low-temperature environment is guaranteed.
Drawings
Fig. 1 is a cross-sectional view of a superconducting transformer high-voltage winding wire of the present invention.
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1.
Superconducting transformer high voltage winding wire, including high voltage winding wire 1 and the compound insulating layer 2 of parcel on high voltage winding wire, its characterized in that: the composite insulating layer 2 comprises an insulating adhesion layer 3 wound on the high-voltage winding wire and a low-temperature-resistant insulating layer 4 solidified on the insulating adhesion layer 3.
The composite insulating layer 2 in the superconducting transformer high-voltage winding wire comprises the insulating adhesion layer 3 and the low-temperature-resistant insulating layer 4, the insulating adhesion layer 3 is strong in adhesion force and good in adhesion property, the adhesion quality of the composite insulating layer 2 is higher, the dielectric loss of the composite insulating layer 2 is reduced, the probability that the composite insulating layer 2 generates heat due to the dielectric loss is reduced, the low-temperature-resistant insulating layer 4 effectively reduces the cracking probability of the composite insulating layer 2 in a low-temperature environment, so that the composite insulating layer 2 has excellent low-temperature-resistant performance, the composite insulating layer 2 is good in low-temperature-resistant performance and small in dielectric loss, the heating rate in a liquid nitrogen low-temperature environment is low, the insulating reliability is high, and the insulating life of the transformer high-voltage winding in the low-temperature environment is effectively prolonged.
The high-voltage winding wire 1 is coated with a high-temperature superconducting coating 11 made of yttrium barium copper oxide, the composite insulating layer 2 is wrapped on the high-temperature superconducting coating 11, so that the high-voltage winding wire has superconducting performance, and the composite insulating layer 2 ensures the use reliability of the high-voltage winding wire with the superconducting performance under a low-temperature condition so as to ensure the normal operation of a superconducting transformer coil in a low-temperature environment.
The insulation adhesion layer 3 is a polyimide film which is wound on the high-voltage winding wire in a lap winding mode, the thickness of the insulation adhesion layer is 100-160 mu m, the polyimide has high insulation performance and low dielectric loss and belongs to F-H insulation, the polyimide film is wound on the high-voltage winding wire 1 and has strong adhesion and good fitting performance, no wrinkles and no bubbles exist on the surface of the insulation adhesion layer 3, the adhesion quality of the composite insulation layer 2 on the high-voltage winding wire is effectively guaranteed, and the thickness of the insulation adhesion layer 3 is 100-160 mu m and achieves effective wrapping.
The inner surface of the polyimide film is coated with the adhesive, so that the polyimide film on the inner layer and the outer layer in the winding process is effectively pasted, the compactness of the insulating adhesion layer 3 is improved, and the adhesion quality is further improved.
The low-temperature-resistant insulating layer 4 is an epoxy insulating impregnated glue layer, an organic silicon insulating impregnated glue layer, a polyester insulating impregnated glue layer or an alcohol acid insulating impregnated glue layer which is cured on the insulating adhesive layer after vacuum pressure impregnation. The low-temperature resistant insulating layer 4 is formed on the insulating adhesion layer 3 in a vacuum pressure impregnation and re-solidification mode, the forming is simple, the composite insulating layer 2 is suitable for a liquid nitrogen soaking environment, and the liquid nitrogen low-temperature resistance of the high-voltage winding wire of the superconducting transformer is good. The insulating adhesion layer 3 is a polyimide film, the insulating property is good, the dielectric loss is low, the low-temperature-resistant insulating layer 4 is an insulating impregnated glue layer, the liquid nitrogen low-temperature-resistant performance is good, the composite insulating layer 2 is excellent in electrical performance, high in electrical breakdown strength and lightning impulse strength and high in insulating reliability, and the use reliability of the high-voltage winding wire 1 with the superconducting performance on a low-temperature condition is guaranteed, so that the normal operation of the superconducting transformer coil in a low-temperature environment is guaranteed.
The thickness of the low-temperature-resistant insulating layer 4 is 300-500 microns, the insulating adhesion layer 3 is effectively protected, and the liquid nitrogen low-temperature resistance of the high-voltage winding wire of the superconducting transformer is guaranteed.
The superconducting transformer high-voltage winding is characterized in that: the superconducting transformer high-voltage winding wire is wound. The composite insulating layer 2 in the superconducting transformer high-voltage winding wire comprises an insulating adhesion layer 3 and a low-temperature-resistant insulating layer 4, the insulating adhesion layer 3 is strong in adhesion force and good in adhesion property, the adhesion quality of the composite insulating layer 2 is higher, the dielectric loss of the composite insulating layer 2 is reduced, the probability that the composite insulating layer 2 generates heat due to the dielectric loss is reduced, the low-temperature-resistant insulating layer 4 effectively reduces the cracking probability of the composite insulating layer 2 in a low-temperature environment, so that the composite insulating layer 2 has excellent low-temperature-resistant performance, the composite insulating layer 2 is good in low-temperature-resistant performance, small in dielectric loss, low in heating rate in a liquid nitrogen low-temperature environment, high in insulating reliability, and the insulating life of the transformer high-voltage winding in the low-temperature environment is effectively prolonged.
The technical solutions of the embodiments of the present invention are fully described above with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Claims (7)
1. Superconducting transformer high voltage winding wire, including high voltage winding wire rod and the compound insulating layer of parcel on high voltage winding wire rod, its characterized in that: the composite insulating layer comprises an insulating adhesion layer wound on the high-voltage winding wire and a low-temperature-resistant insulating layer solidified on the insulating adhesion layer.
2. A superconducting transformer high-voltage winding wire according to claim 1, wherein the high-voltage winding wire is coated with a high-temperature superconducting coating of yttrium barium copper oxide, and the composite insulating layer is wrapped on the high-temperature superconducting coating.
3. The superconducting transformer high-voltage winding wire of claim 2, wherein: the insulating adhesion layer is a polyimide film which is wound on the high-voltage winding wire in a lap wrapping mode, and the thickness of the insulating adhesion layer is 100-160 mu m.
4. The superconducting transformer high-voltage winding wire of claim 3, wherein: the inner surface of the polyimide film is coated with an adhesive.
5. The superconducting transformer high-voltage winding wire of claim 2, wherein: the low-temperature-resistant insulating layer is an epoxy insulating dipping glue layer, an organic silicon insulating dipping glue layer, a polyester insulating dipping glue layer or an alcohol acid insulating dipping glue layer which is cured on the insulating attachment layer after vacuum pressure dipping.
6. The superconducting transformer high-voltage winding wire of claim 5, wherein: the thickness of the low temperature resistant insulating layer is 300-500 μm.
7. The superconducting transformer high-voltage winding is characterized in that: the superconducting transformer high-voltage winding wire is wound by the superconducting transformer high-voltage winding wire of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536277.4U CN216389032U (en) | 2021-10-21 | 2021-10-21 | Superconducting transformer high-voltage winding lead and superconducting transformer high-voltage winding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536277.4U CN216389032U (en) | 2021-10-21 | 2021-10-21 | Superconducting transformer high-voltage winding lead and superconducting transformer high-voltage winding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216389032U true CN216389032U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122536277.4U Active CN216389032U (en) | 2021-10-21 | 2021-10-21 | Superconducting transformer high-voltage winding lead and superconducting transformer high-voltage winding |
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| CN (1) | CN216389032U (en) |
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2021
- 2021-10-21 CN CN202122536277.4U patent/CN216389032U/en active Active
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