CN215578133U - Transformer winding outlet structure and transformer - Google Patents
Transformer winding outlet structure and transformer Download PDFInfo
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- CN215578133U CN215578133U CN202121075004.8U CN202121075004U CN215578133U CN 215578133 U CN215578133 U CN 215578133U CN 202121075004 U CN202121075004 U CN 202121075004U CN 215578133 U CN215578133 U CN 215578133U
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Abstract
The utility model discloses a transformer winding outgoing line structure and a transformer, wherein the outgoing line structure comprises a plurality of terminal rows, and each terminal row comprises a plurality of wiring terminals; the two ends of the wiring terminal are respectively provided with an inlet wire hole and an outlet wire hole, the inlet wire hole and the outlet wire hole are electrically conducted, the wiring terminal is further provided with a first screw hole, wires to be connected can be respectively inserted into the inlet wire hole and the outlet wire hole to be conducted, and the wires to be connected are fastened through a bolt screwed into the first screw hole. The transformer winding wire outlet structure adopts the terminal row mode to carry out wire outlet, welding is not needed, the process flow of transformer production is simplified, and the production efficiency is improved; the transformer winding outlet structure has the advantages of compact structure and small occupied space while ensuring that enough insulation distance is reserved between the leads.
Description
Technical Field
The utility model belongs to the technical field of transformers, and particularly relates to a transformer winding outgoing line structure and a transformer.
Background
The valve side windings of the dry type converter transformer for cascade high-voltage frequency conversion and speed regulation adopt a multi-split phase-shifting structure, each valve side winding respectively supplies power for a corresponding power unit, rectification and inversion are completed in the power units, then superposition is carried out, input multiple technology is realized, and further pollution of harmonic waves to a power grid is eliminated. Due to the characteristics of the technology, the cascade high-voltage frequency conversion technology is widely applied in China.
The valve side winding of the common dry type converter transformer for high-voltage frequency conversion and speed regulation adopts an outgoing line mode that an outgoing line is connected with a lug plate in a welding way. The outgoing line structure in the mode has the advantages of complex production and manufacturing process, large occupied space and relatively exposed outgoing line and lug, so that the insulation distance from the outgoing line structure to the cabinet body of the transformer and other equipment cannot be ensured, and the safety is relatively poor.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention discloses a transformer winding outlet structure and a transformer to overcome the above problems or at least partially solve the above problems.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model discloses a transformer winding outlet structure, which comprises a plurality of terminal rows, wherein each terminal row comprises a plurality of wiring terminals;
the wire connecting terminal is characterized in that the two ends of the wire connecting terminal are respectively provided with a wire inlet hole and a wire outlet hole, the wire inlet hole is electrically communicated with the wire outlet hole, the wire connecting terminal is also provided with a first screw hole, wires to be connected can be respectively inserted into the wire inlet hole and the wire outlet hole to be communicated, and the wires are fastened through a bolt screwed into the first screw hole.
Furthermore, the wiring terminals of each terminal row are vertically arranged, and the wire inlet hole and the wire outlet hole are respectively arranged at the two transverse ends of the wiring terminals.
Furthermore, the wiring terminal comprises a terminal shell, the terminal shell is made of insulating materials, the wiring terminals are connected through connecting portions, and the terminal shell and the connecting portions are manufactured integrally.
Further, the terminal housing is a heat-resistant material.
Furthermore, the wiring terminal also comprises a metal conductor, wherein the metal conductor is arranged in the terminal shell and respectively extends into the wire inlet hole and the wire outlet hole to electrically conduct the wire inlet hole and the wire outlet hole.
Furthermore, the metal conductor is made of copper.
Furthermore, the outlet structure further comprises a fixing plate;
the connecting portion is provided with a second screw hole, and the terminal strip is fixed on the fixing plate through a screw or a bolt screwed into the second screw hole.
Furthermore, two ends of the fixing plate are respectively provided with a fixing hole for fixing the fixing plate.
Furthermore, the bottom of the fixing plate is provided with a groove, and the second screw hole is arranged in the groove.
The utility model further discloses a transformer which uses the outlet structure.
The utility model has the advantages and beneficial effects that:
the transformer winding wire outlet structure adopts a terminal row mode to carry out wire outlet, welding is not needed, connection is realized by direct insertion, the process flow and the use operation of transformer production are simplified, and the production efficiency is improved; the transformer winding outlet structure has the advantages of compact structure and small occupied space while ensuring that enough insulation distance is reserved between the leads.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a top view of a transformer winding outlet configuration in accordance with an embodiment of the present invention;
fig. 2 is a left side view of a transformer winding outlet structure in an embodiment of the utility model.
In the figure: 1. binding post, 2, first screw, 3, fixed plate, 4, second screw, 5, fixed orifices, 6, recess.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. 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 technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
In this embodiment, an outlet structure of a transformer winding is disclosed, as shown in fig. 1-2, the outlet structure includes a plurality of terminal rows, and each terminal row includes a plurality of connection terminals 1; the number of terminal blocks and the number of terminal blocks 1 may be set as required. Preferably, in the present embodiment, each fixing plate 3 is provided with 3 terminal rows, each terminal row is provided with 3 connecting terminals 1, which is suitable for a three-phase winding transformer, and in different embodiments, the number of terminal rows and the number of connecting terminals 1 on each terminal row can be adjusted according to the number of phases and the number of windings.
Wire inlet holes and wire outlet holes are respectively arranged at two ends of the wiring terminal 1, the wire inlet holes and the wire outlet holes are electrically conducted, and the wire inlet holes and the wire outlet holes can be circular or square or in other shapes. The wiring terminal 1 is further provided with a first screw hole 2, wires to be connected can be respectively inserted into the wire inlet hole and the wire outlet hole to be conducted, and are fastened through a bolt screwed into the first screw hole 2. Specifically, two lead wires are respectively inserted into the wire inlet hole and the wire outlet hole, then the bolt is rotated to fix the lead wires, and the lead wires inserted into the wire inlet hole and the wire outlet hole can be electrically conducted.
Referring to fig. 1, the wiring terminal 1 of the present application is transversely provided with two first screw holes 2, the two first screw holes 2 correspond to the wire inlet hole and the wire outlet hole respectively, and after the lead wire is inserted into the wire inlet hole and the wire outlet hole respectively, the two bolts are screwed in from the two first screw holes 2 respectively to enter the wire inlet hole and the wire outlet hole from the side surface respectively, so as to compress and fix the lead wire.
The transformer winding outgoing line structure in the embodiment is suitable for outgoing lines of valve side windings (low-voltage windings) of a dry type converter transformer for cascade high-voltage variable frequency speed regulation, the outgoing line terminals of the valve side windings are more in number and are easy to intersect, the insulation distance between the lead wires cannot be guaranteed, after the terminal discharge lines are adopted, the outgoing line mode can be simplified, the occupied space of the whole outgoing line structure is greatly reduced, and the insulation distance from the outgoing line structure to a transformer cabinet body and other equipment can be effectively guaranteed. Meanwhile, because the outlet structure of the transformer winding in the embodiment is compact, the height problem of the transformer caused by the outlet problem of the valve side winding can be effectively prevented, for example, the transformer needs to be arranged very high in order to ensure the insulation distance of the outlet structure of the valve side winding.
In conclusion, the terminal discharge wire is adopted in the transformer winding wire outlet structure in the embodiment, the lead is fixed through the bolt, welding is not needed, the process flow of transformer production is simplified, and the production efficiency is improved; the transformer winding outlet structure has the advantages of compact structure and small occupied space while ensuring that enough insulation distance is reserved between the leads.
Preferably, in order to facilitate the connection of the lead wires, as shown in fig. 1, the connection terminals 1 of each terminal row are vertically arranged, and the wire inlet holes and the wire outlet holes are respectively arranged at two lateral ends of the connection terminals 1, namely, at two left and right side surfaces of the connection terminals 1. The structure design can make the arrangement of the leads orderly and beautiful, and ensure the safe distance between the leads.
In one embodiment, the connection terminal 1 includes a terminal housing made of an insulating material capable of withstanding the voltage of the transformer valve side winding, the connection terminals 1 are connected to each other by a connection portion, the connection portion is provided with a second screw hole 4, and the terminal housing and the connection portion are integrally manufactured. An insulating shell is arranged outside the wiring terminal 1, so that the safety distance between the wiring terminal 1 can be effectively reduced, and the whole outlet structure is more compact.
Preferably, the terminal housing is a heat-resistant material. When the transformer runs for a long time, the wiring terminal 1 can generate a large amount of heat, and the terminal shell is made of heat-resistant materials, so that the insulating property of the terminal shell can not be reduced in the effective service life.
The wiring terminal 1 further comprises a metal conductor which is arranged in the terminal shell and respectively extends into the wire inlet hole and the wire outlet hole to electrically conduct the wire inlet hole and the wire outlet hole. Specifically, when the lead wires are respectively inserted into the wire inlet hole and the wire outlet hole, the two lead wires and the metal conductor are rotated through the bolt in the first screw hole 2, the two ends of the two lead wires and the two ends of the metal conductor are pressed tightly, and the electric conduction between the lead wires is stably realized. Wherein the metal conductor may be a metal sheet or a metal strip.
Preferably, the metal conductor is made of copper. Of course, the metal conductor may also be other metals, such as aluminum.
In one embodiment, as shown in fig. 1, the outlet structure further comprises a fixing plate 3.
The connecting portion is provided with a second screw hole 4, and the terminal block is fixed on the fixing plate 3 through a screw or a bolt screwed into the second screw hole 4. A plurality of terminal rows are fixed on the fixing plate 3 in a straight line shape, so that the lead wires of the winding on the valve side of the transformer are arranged more neatly.
Preferably, both ends of the fixing plate 3 are respectively provided with fixing holes 5 for fastening the fixing plate 3. The fixing plate 3 can be firmly fixed to the structure inside the transformer by means of the fixing holes 5 and screws or bolts.
When the terminal strip is fixed on the fixing plate 3 by screws or bolts, the screws or bolts may protrude from the bottom of the fixing plate 3, for example, when the terminal strip is fixed from the bottom of the fixing plate 3 by bolts, the heads of the bolts may protrude, which affects the flatness of the bottom of the fixing plate 3 and is not favorable for fixing the fixing plate 3. Therefore, as shown in fig. 2, a groove 6 is provided at the bottom of the fixing plate 3, and the second screw hole 4 is provided in the groove 6. Due to the design, the bolt head can be arranged in the groove 6, the bottom of the fixing plate 3 is smoother, meanwhile, due to the design of the groove 6, the material consumption of the fixing plate 3 can be saved, and the weight of the whole wire outlet structure is further reduced.
Example 2
The utility model discloses a transformer, which uses the outgoing line structure. When the transformer is maintained or the valve side winding lead is disassembled, the disassembly of the lead or the replacement of the lead structure can be realized by rotating the screw or the bolt, and the transformer is convenient and quick.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. The transformer winding outgoing line structure is characterized by comprising a plurality of terminal rows, wherein each terminal row comprises a plurality of wiring terminals;
the wire connecting terminal is characterized in that the two ends of the wire connecting terminal are respectively provided with a wire inlet hole and a wire outlet hole, the wire inlet hole is electrically communicated with the wire outlet hole, the wire connecting terminal is also provided with a first screw hole, wires to be connected can be respectively inserted into the wire inlet hole and the wire outlet hole to be communicated, and the wires are fastened through a bolt screwed into the first screw hole.
2. The transformer winding outlet structure according to claim 1, wherein the connection terminals of each terminal row are vertically arranged, and the wire inlet hole and the wire outlet hole are respectively disposed at both lateral ends of the connection terminals.
3. The transformer winding outlet structure according to claim 1, wherein the connection terminals include terminal housings, the terminal housings are made of an insulating material, the connection terminals are connected to each other by connection portions, and the terminal housings are integrally manufactured with the connection portions.
4. The transformer winding outlet structure of claim 3, wherein the terminal housing is a heat resistant material.
5. The transformer winding outlet structure according to claim 3, wherein the terminal block further comprises a metal conductor, and the metal conductor is disposed in the terminal housing and extends into the wire inlet hole and the wire outlet hole respectively to electrically connect the wire inlet hole and the wire outlet hole.
6. The transformer winding outlet structure according to claim 5, wherein the metal conductor is made of copper.
7. The transformer winding outlet structure according to any one of claims 3 to 5, wherein the outlet structure further comprises a fixing plate;
the connecting portion is provided with a second screw hole, and the terminal strip is fixed on the fixing plate through a screw or a bolt screwed into the second screw hole.
8. The transformer winding outlet structure according to claim 7, wherein fixing holes are respectively provided at both ends of the fixing plate for fixing the fixing plate.
9. The transformer winding outlet structure according to claim 7, wherein a groove is formed at a bottom of the fixing plate, and the second screw hole is disposed in the groove.
10. A transformer, characterized in that it uses a transformer winding outlet structure according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121075004.8U CN215578133U (en) | 2021-05-19 | 2021-05-19 | Transformer winding outlet structure and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121075004.8U CN215578133U (en) | 2021-05-19 | 2021-05-19 | Transformer winding outlet structure and transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215578133U true CN215578133U (en) | 2022-01-18 |
Family
ID=79862176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121075004.8U Active CN215578133U (en) | 2021-05-19 | 2021-05-19 | Transformer winding outlet structure and transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215578133U (en) |
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2021
- 2021-05-19 CN CN202121075004.8U patent/CN215578133U/en active Active
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