CN210091895U - High-voltage coil short-circuit deformation-resistant fastening composite structure of amorphous alloy transformer - Google Patents
High-voltage coil short-circuit deformation-resistant fastening composite structure of amorphous alloy transformer Download PDFInfo
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- CN210091895U CN210091895U CN201920798575.0U CN201920798575U CN210091895U CN 210091895 U CN210091895 U CN 210091895U CN 201920798575 U CN201920798575 U CN 201920798575U CN 210091895 U CN210091895 U CN 210091895U
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Abstract
The utility model discloses an anti short circuit of metallic glass transformer high-voltage coil warp fastening composite construction. The composite structure binds a plurality of amorphous alloy coils into a whole, the composite structure comprises insulating crepe paper with high strength and extensibility and a thermoplastic insulating tape with high strength and rigidity, each amorphous alloy coil comprises a horizontal straight line part and a vertical straight line part, the horizontal straight line parts and the vertical straight line parts form a closed loop through arc-shaped connecting parts, the outer walls of the vertical straight line parts of two adjacent amorphous alloy coils form a whole through wound insulating crepe paper, the vertical straight line parts of a single amorphous alloy coil are wound with the insulating crepe paper, and the outer walls of the insulating crepe paper are wound with the thermoplastic insulating tape. The utility model discloses have and be independent of between iron core and coil system, have the shape of sufficient protection coil when the short circuit, reduce the effect of transformer reactance numerical value's change volume.
Description
Technical Field
The utility model belongs to the technical field of oil-immersed distribution transformer annex technique and specifically relates to an anti short circuit of metallic glass transformer high-voltage coil warp fastening composite construction, is applicable to the power transformer of voltage and current transformation among the power transmission and transformation device.
Background
The coil of the oil immersed distribution transformer with the amorphous alloy iron core in the prior art is just a simple coil with glue coated on the end part for solidification protection, has a local protection effect on the axial direction of the coil when the transformer is in short circuit, and cannot play an effective protection effect on the radial direction of the coil.
The structure is complex in process manufacturing, needs to enter a drying room to dry and solidify the weftless glass ribbon and the tightening belt, is long in time, complex in process, tight in temperature control, free of heating shrinkage of the weftless glass ribbon, poor in coil radial supporting effect during short circuit, poor in appearance size control effect, large in reactance value change and poor in short circuit resistance.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the composite structure has the functions of being independent of a system between an iron core and a coil, having enough shape of a protection coil during short circuit and reducing the variable quantity of the reactance value of the transformer.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an anti short circuit of metallic glass transformer high voltage coil warp fastening composite construction, installs on metallic glass coil, metallic glass coil includes horizontal straight line portion and vertical straight line portion, and horizontal straight line portion and vertical straight line portion form the closed loop through arc connecting portion, metallic glass transformer high voltage coil anti short circuit warp fastening composite construction ligatures a plurality of metallic glass coil into a whole, and composite construction includes insulating crepe paper and thermoplasticity insulating tape, and the vertical straight line portion outer wall of two adjacent metallic glass coils forms wholly through the insulating crepe paper of winding, and the vertical straight line portion winding of single metallic glass coil has insulating crepe paper, and insulating crepe paper outer wall winding has thermoplasticity insulating tape. The lower edge of the thermoplastic insulating tape is in intimate contact with the adjacent upper edge during winding.
The composite structure for preventing the high-voltage coil of the amorphous alloy transformer from short-circuit deformation and fastening is used between the amorphous alloy coils, plays a role in protection, is beneficial to reducing outward expansion deformation of the coils of the amorphous alloy transformer and reducing the change of reactance numerical values, and is particularly suitable for short-circuit-resistant products of oil-immersed amorphous alloy iron core distribution transformers.
The composite structure for preventing the high-voltage coil of the amorphous alloy transformer from short-circuit deformation and fastening is used between the amorphous alloy coil and the iron core, plays a role in protection, is beneficial to reducing the effects of coil deformation and iron core extrusion of the amorphous alloy transformer, and is particularly suitable for products with short-circuit resistance and empty load loss requirements of oil immersed amorphous alloy iron core distribution transformers.
Further, the winding length of the thermoplastic insulating tape is smaller than that of the insulating crepe paper.
Further, the winding length of the thermoplastic insulating tape is 15/17 of the winding length of the insulating crepe paper.
The utility model has the advantages that: the utility model discloses simple structure, reasonable in design, it is easy and simple to handle, have following advantage:
(1) the outer walls of the vertical straight line parts of the two adjacent amorphous alloy coils form a whole through the wound insulating crepe paper, the vertical straight line part of a single amorphous alloy coil is wound with the insulating crepe paper, and the outer wall of the insulating crepe paper is wound with a thermoplastic insulating tape, so that the electric insulation strength of the transformer in normal operation can be effectively improved, and the capacity of the transformer for preventing the amorphous alloy coils from outward expansion and deformation and keeping the appearance size unchanged can be improved during sudden short circuit;
(2) the utility model discloses both can reduce amorphous alloy coil to ground distance, improved amorphous alloy coil's electrical insulation intensity simultaneously again, dwindled insulation distance greatly, space utilization improves by a wide margin, reduces the use of raw and other materials, reduces amorphous alloy transformer's manufacturing cost, has strengthened amorphous alloy coil anti short circuit ability etc. simultaneously again, is applicable to oil-immersed amorphous distribution transformer's anti short circuit transformer's design and manufacturing.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
FIG. 1 is a schematic diagram of a prior art configuration;
fig. 2 is a perspective view of the present invention;
fig. 3 is a front view of the present invention.
In the figure, 1, an amorphous alloy coil, 2, insulating crepe paper, 3, a thermoplastic insulating tape, 11, a transverse straight line part, 12, an arc-shaped connecting part and 13, a vertical straight line part are arranged.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
The amorphous alloy transformer high-voltage coil short-circuit deformation resistant fastening composite structure shown in fig. 2-3 is characterized in that a plurality of amorphous alloy coils 1 are bound into a whole by the composite structure, the composite structure comprises insulating crepe paper 2 and thermoplastic insulating strips 3, each amorphous alloy coil 1 comprises a transverse straight portion 11 and a vertical straight portion 13, the transverse straight portions 11 and the vertical straight portions 13 form a closed loop through arc-shaped connecting portions 12, the outer walls of the vertical straight portions 13 of two adjacent amorphous alloy coils 1 form a whole through the wound insulating crepe paper 2, the vertical straight portions 13 of a single amorphous alloy coil 1 are wound with the insulating crepe paper 2, and the outer walls of the insulating crepe paper 2 are wound with the thermoplastic insulating strips 3. The insulating crepe paper 2 and the thermoplastic insulating tape 3 are made of electrical insulating materials.
After the thermoplastic insulating tape 3 is wound outside the insulating crepe paper 2, the thermoplastic insulating tape 3 is fastened by a heated fastener so as to be fixed on the outer wall of the insulating crepe paper 2.
The winding length of the thermoplastic insulating tape 3 is 15/17 of the winding length of the insulating crepe paper 2.
The high-strength thermoplastic insulating tape 3 with rigidity and the high-strength insulating crepe paper 2 with high strength and high extensibility are combined, fastened and bound, so that the amorphous alloy coils 1 are tightened in the axial direction and the breadth direction, and meanwhile, two adjacent amorphous alloy coils 1 are also bound and fastened together to form an out-of-phase amorphous alloy coil 1 assembly which is also effectively supported. The short-circuit deformation resistant fastening composite structure of the high-voltage coil of the alloy transformer can effectively protect the amorphous alloy coil 1 when the transformer is in short circuit.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (3)
1. The utility model provides an anti short circuit of metallic glass transformer high voltage coil warp fastens composite construction installs on metallic glass coil (1), metallic glass coil (1) is including horizontal straight line portion (11) and vertical straight line portion (13), and horizontal straight line portion (11) and vertical straight line portion (13) form closed loop, its characterized in that through arc connecting portion (12): the amorphous alloy transformer high-voltage coil short-circuit deformation resistant fastening composite structure binds a plurality of amorphous alloy coils (1) into a whole, the composite structure comprises insulating crepe paper (2) and thermoplastic insulating strips (3), the outer walls of vertical straight line parts (13) of two adjacent amorphous alloy coils (1) form a whole through the wound insulating crepe paper (2), the vertical straight line parts (13) of a single amorphous alloy coil (1) are wound with the insulating crepe paper (2), and the outer walls of the insulating crepe paper (2) are wound with the thermoplastic insulating strips (3).
2. The amorphous alloy transformer high-voltage coil short-circuit deformation resistant fastening composite structure as claimed in claim 1, wherein: the winding length of the thermoplastic insulating tape (3) is less than that of the insulating crepe paper (2).
3. The amorphous alloy transformer high-voltage coil short-circuit deformation resistant fastening composite structure as claimed in claim 2, wherein: the winding length of the thermoplastic insulating tape (3) is 15/17 of the winding length of the insulating crepe paper (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920798575.0U CN210091895U (en) | 2019-05-30 | 2019-05-30 | High-voltage coil short-circuit deformation-resistant fastening composite structure of amorphous alloy transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920798575.0U CN210091895U (en) | 2019-05-30 | 2019-05-30 | High-voltage coil short-circuit deformation-resistant fastening composite structure of amorphous alloy transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210091895U true CN210091895U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920798575.0U Active CN210091895U (en) | 2019-05-30 | 2019-05-30 | High-voltage coil short-circuit deformation-resistant fastening composite structure of amorphous alloy transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210091895U (en) |
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2019
- 2019-05-30 CN CN201920798575.0U patent/CN210091895U/en active Active
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