CN219246512U - Three-phase voltage transformer - Google Patents
Three-phase voltage transformer Download PDFInfo
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- CN219246512U CN219246512U CN202320330315.7U CN202320330315U CN219246512U CN 219246512 U CN219246512 U CN 219246512U CN 202320330315 U CN202320330315 U CN 202320330315U CN 219246512 U CN219246512 U CN 219246512U
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Abstract
The utility model provides a three-phase voltage transformer which stunt art essential point is: comprises a transformer body; an anti-resonance iron core with an anti-resonance primary winding and an anti-resonance secondary winding is arranged on the transformer body; a cylindrical cavity penetrating the transformer body is arranged between the left side and the right side of the transformer body; a conical wiring terminal connected with the left end of the cylindrical cavity is arranged on the left side of the transformer body; a fuse cap connected with the right side end of the cylindrical cavity is arranged on the right side of the transformer body; a fuse connected with the conical terminal and the fuse cap is arranged in the cylindrical cavity; the outside parcel and aluminium system shell at the mutual-inductor body are provided with the installation fixed plate on aluminium system shell. The utility model fixes all the elements on the transformer body into an integral structure through the transformer body, and has the advantages of small volume, compact internal elements, anti-resonance winding, convenient installation, convenient fuse disassembly and assembly and material cost saving.
Description
Technical Field
The utility model belongs to the technical field of high-voltage switch cabinets, and particularly relates to a three-phase voltage transformer.
Background
As the application of power equipment is wider and wider, the requirements on miniaturization, intellectualization and safety are higher and higher, and the control and operation are more and more intelligent. The multi-winding high-capacity 4PT scheme with anti-resonance PT is widely applied to air insulation switch cabinets, and the voltage transformer has a measuring function and an anti-ferroresonance and anti-harmonic content exceeding function. The single-phase, three-phase voltage transformer and fuse in the prior art have large outline dimensions, while the SF6 gas insulated cabinet has small volume, is restricted by installation space, installation mode, certain safety distance with other elements, busbar and cable installation, and the like, and is urgently required to manufacture a compact voltage transformer with anti-resonance winding and multi-winding multifunctional, which is mainly installed in the SF6 gas insulated cabinet with limited internal space.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model aims to provide a three-phase voltage transformer which has the advantages of small volume, compact internal elements, anti-resonance winding, convenient installation and material cost saving.
The utility model is realized by the following technical scheme: the utility model provides a three-phase voltage transformer, includes iron core, primary winding and secondary winding, and its technical essential is: the three-phase voltage transformer further comprises a transformer body; the iron core is arranged in the transformer body, and the primary winding and the secondary winding are arranged on the iron core; an anti-resonance iron core is fixedly arranged in the transformer body, and an anti-resonance primary winding and an anti-resonance secondary winding are arranged on the anti-resonance iron core; a cylindrical cavity penetrating the transformer body is arranged between the left side and the right side of the transformer body; a conical wiring terminal connected with the left end of the cylindrical cavity is arranged on the left side of the transformer body; a fuse cap connected with the right side end of the cylindrical cavity is arranged on the right side of the transformer body; a fuse connected with the conical terminal and the fuse cap is arranged in the cylindrical cavity; the right side of the cylindrical cavity is also provided with a primary winding terminal and an anti-resonance terminal; a wiring board groove is formed in the bottom of the transformer body, and a secondary winding wiring terminal is formed in the bottom of the wiring board groove; the head end of the primary winding is connected with the right side end of the fuse; the tail end of the primary winding is connected with a primary winding terminal; the primary winding terminal is connected with the head end of the anti-resonance primary winding; the tail end of the anti-resonance primary winding is connected with an anti-resonance wiring terminal; the tail end of the secondary winding is connected with the head end of the anti-resonance secondary winding; the head end of the secondary winding and the tail end of the anti-resonance secondary winding are connected with the secondary winding terminal; the outside parcel and aluminium system shell at the mutual-inductor body are provided with the installation fixed plate on aluminium system shell.
Further, the number of the iron cores is three, and the iron cores are transversely arranged at intervals.
Further, the fuse cap is connected with the transformer body through threads, and a spring is arranged on the inner side of the fuse cap.
Further, a silica gel cover plate corresponding to the wiring board groove is further arranged at the bottom of the transformer body, and wiring through holes are formed in the silica gel cover plate.
The utility model has the beneficial effects and characteristics that:
according to the utility model, each element is fixed on the transformer body through the transformer body to form an integrated structure, so that the whole volume of each element is reduced; the conical terminal is inserted into the inner conical element of the switch cabinet, so that the insulation requirement is met, and the installation is convenient; through the structural fit of the cylindricality chamber of mutual-inductor body and fuse cap, the dismouting of the fuse of being convenient for has small, and internal element is compact, anti resonant winding, simple to operate, the advantage of saving materials cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the overall structure A of the present utility model;
FIG. 3 is a schematic view of the overall structure B of the present utility model;
fig. 4 is a schematic diagram of the electrical principle of the present utility model.
In the figure, the main part number is described: 1. a transformer body; 2. a conical terminal; 3. a secondary winding terminal; 4. a fuse cap; 5. a primary winding; 6. a secondary winding; 7. an iron core; 8. installing a fixing plate; 9. a silica gel cover plate; 10. a fuse; 21. a primary winding terminal; 22. an anti-resonant terminal; 23. An anti-resonant primary winding; 24. an anti-resonance iron core; 25. an anti-resonant secondary winding.
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Detailed Description
The following describes the utility model in detail by way of specific examples in connection with fig. 1-4.
Examples
The three-phase voltage transformer comprises an iron core 7, a primary winding 5 and a secondary winding 6, wherein: the three-phase voltage transformer further comprises a transformer body 1, wherein the transformer body is formed by casting epoxy resin; the iron core is arranged in the transformer body, and the primary winding and the secondary winding are arranged on the iron core; the number of the iron cores with the primary windings and the secondary windings is three, and the iron cores are transversely arranged at intervals and respectively correspond to A, B, C three phases, and the iron cores form side metering, measuring and residual voltage windings of the transformer, so that the metering and measuring functions of the transformer are realized. An anti-resonance iron core 24 is fixedly arranged in the transformer body, and an anti-resonance primary winding 23 and an anti-resonance secondary winding 25 are arranged on the anti-resonance iron core; a cylindrical cavity penetrating the transformer body is arranged between the left side and the right side of the transformer body; the left side of the transformer body is provided with a conical terminal 2 connected with the left side end of the cylindrical cavity, and the conical terminal is used for being inserted into an inner conical element of the switch cabinet, so that the insulation requirement is met, and the installation is convenient; a fuse cap 4 connected with the right end of the cylindrical cavity is arranged on the right side of the transformer body; a fuse 10 connected to the tapered terminal and the fuse cap is provided in the cylindrical cavity, the fuse being for protecting the voltage transformer; in order to facilitate disassembly and assembly of the fuse, poor contact between the fuse and the conical terminal is prevented, the fuse cap is connected with the transformer body through threads, a spring is arranged on the inner side of the fuse cap, and the fuse is extruded to be in contact with the conical terminal through tension of the spring. A primary winding terminal 21 and an anti-resonance terminal 22 are also arranged on the right side of the cylindrical cavity; a wiring board groove is formed in the bottom of the transformer body, and a secondary winding terminal 3 is arranged at the bottom of the wiring board groove; in order to prevent that the external connection from falling off from the secondary winding wiring end, a silica gel cover plate 9 corresponding to the wiring board groove is further arranged at the bottom of the transformer body, a wiring through hole is formed in the silica gel cover plate, the diameter of the through hole is smaller than that of the external connection, the wiring through hole in the silica gel cover plate increases the binding force to the external connection, and the external connection is prevented from axially shifting and falling off. The head end of the primary winding is connected with the right side end of the fuse; the tail end of the primary winding is connected with the primary winding terminal after being star-connected, the primary winding terminal is connected with the head end of the anti-resonance primary winding, and the tail end of the anti-resonance primary winding is connected with the anti-resonance terminal; the tail end of the secondary winding is connected with the head end of the anti-resonance secondary winding after being connected in a star mode; leading the head end of the secondary winding and the tail end of the anti-resonance secondary winding to the secondary winding terminal for connection; the transformer is characterized in that the iron core, the conical wiring end, the secondary winding wiring end, the primary winding, the secondary winding, the silica gel cover plate, the primary winding wiring end, the anti-resonance primary winding, the anti-resonance iron core, the anti-resonance secondary winding and other elements and the connecting wires are fixed at certain positions and then fixed with the transformer body through epoxy resin pouring. The outside of the transformer body is wrapped with an aluminum shell, and an installation fixing plate 8 is arranged on the aluminum shell.
According to the utility model, the mutual inductor body formed by casting the epoxy resin is used for fixing all the elements on the mutual inductor body to form an integrated structure, so that the overall volume of the mutual inductor is reduced; the conical terminal is inserted into the inner conical element of the switch cabinet, so that the insulation requirement is met, and the installation is convenient; through the structural fit of the cylindricality chamber of mutual-inductor body and fuse cap, the dismouting of the fuse of being convenient for has small, and internal element is compact, anti resonant winding, simple to operate, the advantage of saving materials cost.
Claims (4)
1. The utility model provides a three-phase voltage transformer, includes iron core, primary winding and secondary winding, its characterized in that: the three-phase voltage transformer further comprises a transformer body; the iron core is arranged in the transformer body, and the primary winding and the secondary winding are arranged on the iron core; an anti-resonance iron core is fixedly arranged in the transformer body, and an anti-resonance primary winding and an anti-resonance secondary winding are arranged on the anti-resonance iron core; a cylindrical cavity penetrating the transformer body is arranged between the left side and the right side of the transformer body; a conical wiring terminal connected with the left end of the cylindrical cavity is arranged on the left side of the transformer body; a fuse cap connected with the right side end of the cylindrical cavity is arranged on the right side of the transformer body; a fuse connected with the conical terminal and the fuse cap is arranged in the cylindrical cavity; the right side of the cylindrical cavity is also provided with a primary winding terminal and an anti-resonance terminal; a wiring board groove is formed in the bottom of the transformer body, and a secondary winding wiring terminal is formed in the bottom of the wiring board groove; the head end of the primary winding is connected with the right side end of the fuse; the tail end of the primary winding is connected with a primary winding terminal; the primary winding terminal is connected with the head end of the anti-resonance primary winding; the tail end of the anti-resonance primary winding is connected with an anti-resonance wiring terminal; the tail end of the secondary winding is connected with the head end of the anti-resonance secondary winding; the head end of the secondary winding and the tail end of the anti-resonance secondary winding are connected with the secondary winding terminal; the outside parcel and aluminium system shell at the mutual-inductor body are provided with the installation fixed plate on aluminium system shell.
2. The three-phase voltage transformer of claim 1, wherein: the number of the iron cores is three, and the iron cores are transversely arranged at intervals.
3. The three-phase voltage transformer of claim 1, wherein: the fuse cap is connected with the transformer body through threads, and a spring is arranged on the inner side of the fuse cap.
4. The three-phase voltage transformer of claim 1, wherein: the bottom of the transformer body is also provided with a silica gel cover plate corresponding to the wiring board groove, and the silica gel cover plate is provided with a wiring through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320330315.7U CN219246512U (en) | 2023-02-28 | 2023-02-28 | Three-phase voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320330315.7U CN219246512U (en) | 2023-02-28 | 2023-02-28 | Three-phase voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219246512U true CN219246512U (en) | 2023-06-23 |
Family
ID=86847827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320330315.7U Active CN219246512U (en) | 2023-02-28 | 2023-02-28 | Three-phase voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219246512U (en) |
-
2023
- 2023-02-28 CN CN202320330315.7U patent/CN219246512U/en active Active
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