CN114743772A - Offshore wind power dry-type transformer poured by silicon rubber material - Google Patents
Offshore wind power dry-type transformer poured by silicon rubber material Download PDFInfo
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- CN114743772A CN114743772A CN202210474408.7A CN202210474408A CN114743772A CN 114743772 A CN114743772 A CN 114743772A CN 202210474408 A CN202210474408 A CN 202210474408A CN 114743772 A CN114743772 A CN 114743772A
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- silicon rubber
- voltage coil
- wind power
- offshore wind
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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
- H01F27/2823—Wires
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- 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
- H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
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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
- H01F27/323—Insulation between winding turns, between winding layers
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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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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electrotherapy Devices (AREA)
Abstract
The invention provides an offshore wind power dry-type transformer poured by silicon rubber insulating materials, which comprises an iron core; the high-voltage coil and the low-voltage coil are wound by adopting copper foils, and the high-voltage coil is wound by adopting a silicon rubber insulated wire; the silicon rubber insulated wire comprises a copper wire, a semi-conductive shielding layer arranged on the outer side of the copper wire and an insulating layer arranged on the outer side of a semiconductor layer; the coil external insulation is made of silicon rubber materials, the low-voltage coil external insulation is sprayed with a thin layer of silicon rubber insulation by adopting a spraying process, and the high-voltage coil external insulation is formed by coating a layer of silicon rubber materials on the outer side of the coil by adopting a pouring process; and silicon rubber insulating cushion blocks are arranged on the upper part of the iron core and the end part of the coil. By applying the silicon rubber with hydrophobicity and ageing resistance to most of insulation, the offshore wind power dry-type transformer poured by the method can run in severe environments with high salt fog and high humidity for a long time, and the safe and reliable operation of a wind turbine generator is ensured.
Description
Technical Field
The invention belongs to the field of dry-type transformers, and particularly relates to an offshore wind power dry-type transformer poured by silicon rubber materials.
Background
As important parts of wind turbine generators, transformers are required to have high reliability and safety, and dry transformers are increasingly used in offshore wind turbine generators due to their simple structure, fire resistance, no pollution, and easy maintenance. From onshore wind power to offshore wind power, the transformer is exposed in severe environment with high salt fog and high humidity, and the conventional epoxy resin poured transformer is easily corroded, so that the insulation aging speed is accelerated, the safe operation of the transformer is influenced, and the service life of the transformer is greatly shortened.
Silicon rubber materials are often applied to high-voltage direct-current insulators due to good hydrophobicity, aging resistance, tracking resistance, electric corrosion resistance, high tensile strength, bending strength, mechanical strength, excellent impact resistance, shock resistance and brittle fracture resistance, light weight, convenience in installation and maintenance and other excellent performances. At present, no offshore wind power dry-type transformer adopting silicon rubber materials as wire insulation and main insulation materials is available for improving the service life and reliability under the offshore high-salt-mist and high-humidity environment.
Disclosure of Invention
The invention aims to provide an offshore wind power dry-type transformer poured by silicon rubber insulating materials, and aims to solve the technical problem that an offshore wind power dry-type transformer poured by epoxy resin in the prior art cannot operate in a severe environment with high salt mist and high humidity of offshore wind power for a long time.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an offshore wind power dry-type transformer that silicon rubber material was pour which characterized in that includes:
an iron core;
the high-voltage coil and the low-voltage coil are wound by adopting copper foils, the high-voltage coil is wound by adopting a silicon rubber insulated wire, and the high-voltage coil and the low-voltage coil are wound on an epoxy resin insulated cylinder which is convenient for winding the wire;
the silicon rubber insulated wire comprises a copper wire, a semi-conductive shielding layer arranged on the outer side of the copper wire and an insulating layer arranged on the outer side of a semiconductor layer;
and the coil outer insulating layers are all made of silicon rubber materials.
And the cushion block is used for fixing the high-voltage coil and the low-voltage coil.
At foretell marine wind power dry-type transformer, still include the splint, set up two tip about the iron core, the iron core passes through splint and insulating cushion is fixed, and splint pass through the screw fixation iron core.
In the offshore wind power dry-type transformer, the insulating cushion block is fixed through the baffle plate led out from the clamping plate, the led-out baffle plate is V-shaped, the insulating cushion block is arranged on the lower end face of the baffle plate, and the cushion block presses the high-voltage coil and the low-voltage coil to enable the high-voltage coil and the low-voltage coil to be fixed on the outer wall of the iron core.
In the offshore wind power dry-type transformer, the semi-conductive shielding layer and the insulating layer of the silicon rubber insulating lead are both made of silicon rubber materials.
In the offshore wind power dry-type transformer, the cushion block is arranged between the iron core and the high-voltage and low-voltage coils and is made of silicon rubber materials.
In the offshore wind power dry-type transformer, the outer wall of the low-voltage coil is sprayed with the silicon rubber paint spraying layer, and the outer wall of the high-voltage coil is poured with the silicon rubber outer insulating layer.
The offshore wind power dry-type transformer poured by the silicone rubber insulating material has the beneficial effects that: the high-voltage wire of the dry-type transformer is insulated, the cushion block is insulated, and the outer insulation structures of the high-voltage coil and the low-voltage coil are made of silicon rubber materials, so that the problem that the conventional epoxy resin poured dry-type transformer cannot be in high salt mist and high humidity environment for a long time is solved, and meanwhile, the service life of the offshore wind power dry-type transformer can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic two-dimensional axial symmetry of the cross-sectional structure of a single phase winding of the present invention;
FIG. 4 is a cross-sectional view of a high voltage coil wire of the present invention;
wherein the various reference numbers in the figures illustrate:
1: an iron core; 2: insulating cushion blocks; 3: an outer insulating layer of the high-voltage coil; 4: a high-voltage wiring terminal; 5: an iron core clamping plate; 6: an epoxy resin insulating cylinder; 7: a low-voltage coil; 8: a high-voltage coil; 9: an outer insulating layer of the low-voltage coil (silicon rubber spray painting); 10: a copper wire; 11: a semiconducting layer; 12: an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment is realized as follows:
referring to fig. 1-4, the offshore wind power dry-type transformer poured by silicone rubber material includes: an iron core 1; the high-voltage coil 8 and the low-voltage coil 7 are fixed with the iron core 1 through the clamping plate 5 and the insulating cushion block 2, the high-voltage coil 8 is wound by a silicon rubber insulating lead, and the low-voltage coil 7 is wound by a copper foil; the silicon rubber insulated wire comprises a copper wire 10, a semi-conductive shielding layer 11 arranged on the outer side of the copper wire and an insulating layer 12 arranged on the outer side of a semiconductor layer; the high-voltage wiring terminal 4 is led out by a silicon rubber insulated wire; the high-voltage coil 8 and the low-voltage coil 7 are wound on an epoxy resin insulating cylinder convenient for winding a lead; the outer surface of the low-voltage coil 7 is sprayed with a silicon rubber paint spraying layer 9 by adopting a spraying process, and the outer surface of the high-voltage coil 8 is poured with the high-voltage coil outer insulating layer 3 made of silicon rubber materials by adopting a pouring process.
Referring to fig. 4, in the embodiment, the semiconductive shielding layer 11 and the insulating layer 12 of the silicone rubber insulated wire adopted in the present invention are both made of silicone rubber material, the thickness of the semiconductive layer 11 is 0.3 to 0.5mm, and the thickness of the insulating layer 12 is 0.5 to 0.8 mm. The semi-conducting layer silicon rubber can optimize electric field distribution and alleviate the electric field intensity concentration phenomenon of high-voltage parts. At such thicknesses, silicone rubber insulated wire is satisfactory for both turn insulation and layer insulation requirements.
Referring also to fig. 1-3, the low voltage coil 7 and the high voltage coil 8 are wound with the help of the solid epoxy resin insulating cylinder 6 during the winding process. The silicon rubber material has high elasticity and good softness, but is not easy to be used as a support for winding coils, and the epoxy resin insulating cylinder 6 not only can play a supporting role and facilitate winding coils, but also can improve the electric field distribution of the transformer. In order to meet the requirements of salt mist resistance and moisture resistance, in the embodiment, the coil external insulation comprises a low-voltage coil external insulation 9 and a high-voltage coil external insulation 3, the low-voltage coil external insulation 9 is sprayed with a layer of silicon rubber insulation with the thickness of 2-3 mm by adopting a spraying process, and the high-voltage coil external insulation 3 is formed by coating a layer of silicon rubber material on the outer side of the coil by adopting a pouring process. Insulating pad 2 be 4 silicone rubber pads that thickness is 10 ~ 20mm, can be better fix epoxy insulating cylinder 6 to can fix high-voltage coil 8, low-voltage coil 7.
The silicon rubber material has good hydrophobicity, ageing resistance, tracking resistance and electric erosion resistance, and the hydrophobicity is not easy to lose in high-salt fog and high-humidity environments.
It should be understood that parts of the specification not set forth in detail are well within the prior art.
Although specific embodiments of the present invention have been described above with reference to the accompanying drawings, it will be appreciated by those skilled in the art that these are merely illustrative and that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is limited only by the appended claims.
Claims (6)
1. The utility model provides an offshore wind power dry-type transformer that silicon rubber material was pour which characterized in that includes:
an iron core;
the high-voltage coil and the low-voltage coil are wound by adopting copper foils, the high-voltage coil is wound by adopting a silicon rubber insulated wire, and the high-voltage coil and the low-voltage coil are wound on an epoxy resin insulated cylinder which is convenient for winding the wire;
the silicon rubber insulated wire comprises a copper wire, a semi-conductive shielding layer arranged on the outer side of the copper wire and an insulating layer arranged on the outer side of a semiconductor layer;
the coil outer insulating layers are all made of silicon rubber materials;
and the cushion block is used for fixing the high-voltage coil and the low-voltage coil.
2. The offshore wind power dry-type transformer of claim 1, further comprising clamping plates disposed at upper and lower end portions of the iron core, wherein the iron core is fixed by the clamping plates and the insulating pads, and the clamping plates fix the iron core by screws.
3. The offshore wind power dry-type transformer of claim 1, wherein the insulating pad is fixed by a baffle plate led out from the clamping plate, the led-out baffle plate is V-shaped, the insulating pad is arranged on the lower end face of the baffle plate, and the pad presses the high-voltage coil and the low-voltage coil to be fixed on the outer wall of the iron core.
4. The offshore wind power dry transformer of claim 1, wherein the semi-conductive shielding layer and the insulating layer of the silicon rubber insulated conductor are both silicon rubber materials.
5. The offshore wind power dry transformer of claim 1, wherein the spacers are disposed between the core and the high and low voltage coils and are made of silicone rubber.
6. The offshore wind power dry transformer of claim 1, wherein the outer wall of the low-voltage coil is coated with a silicone rubber paint layer, and the outer wall of the high-voltage coil is cast with a silicone rubber outer insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474408.7A CN114743772A (en) | 2022-04-29 | 2022-04-29 | Offshore wind power dry-type transformer poured by silicon rubber material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210474408.7A CN114743772A (en) | 2022-04-29 | 2022-04-29 | Offshore wind power dry-type transformer poured by silicon rubber material |
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| Publication Number | Publication Date |
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| CN114743772A true CN114743772A (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210474408.7A Pending CN114743772A (en) | 2022-04-29 | 2022-04-29 | Offshore wind power dry-type transformer poured by silicon rubber material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117457337A (en) * | 2023-12-22 | 2024-01-26 | 河南铜牛变压器有限公司 | 24 pulse wave silicone rubber dry-type rectifier transformer for distribution system |
-
2022
- 2022-04-29 CN CN202210474408.7A patent/CN114743772A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117457337A (en) * | 2023-12-22 | 2024-01-26 | 河南铜牛变压器有限公司 | 24 pulse wave silicone rubber dry-type rectifier transformer for distribution system |
| CN117457337B (en) * | 2023-12-22 | 2024-03-01 | 河南铜牛变压器有限公司 | 24 pulse wave silicone rubber dry-type rectifier transformer for distribution system |
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