Transformer

Abstract

The utility model provides a transformer. The transformer comprises an outgoing line terminal and a transformer body, the winding comprises a winding main body, a plurality of first lead wire sections and a plurality of second lead wire sections, the first end of each first lead wire section is connected with the wire outlet terminal, and the first end of each second lead wire section is connected with the winding main body; the second end of each first lead section is connected with at least one wiring connecting part, and the second end of each second lead section is connected with at least another wiring connecting part; and the wiring connecting part connected with any first lead section and the wiring connecting part connected with any second lead section are selectively connected, so that the outgoing line terminal and the winding main body are electrically connected. The transformer solves the problem that a transformer in the prior art is poor in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a transformer. Background Art

[0002] At present, most power station transformers are three-phase step-up transformers. Due to the requirements of transmission lines, the phase of the low-voltage side of the transformer needs to lag behind or lead the phase of the high-voltage side by 30°, which corresponds to the two connection group numbers YNd11 and YNd1 respectively.

[0003] After the transformer arrives at the site, if the connection group number of the transformer does not match the connection method required on site, it is necessary to re-adjust the low-voltage side leads of the transformer or adjust the external connection bus. The process is cumbersome and brings a lot of economic losses in manpower, material resources, construction period, etc. It can be seen that the versatility of existing transformers is poor. Utility Model Content

[0004] The main purpose of the utility model is to provide a transformer to solve the problem of poor versatility of transformers in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a transformer, comprising: an outlet terminal; a winding, the winding comprising a winding body, a plurality of first lead segments and a plurality of second lead segments, the first end of each first lead segment is connected to the outlet terminal, and the first end of each second lead segment is connected to the winding body; a plurality of wiring connection parts, the second end of each first lead segment is connected to at least one wiring connection part, and the second end of each second lead segment is connected to at least another wiring connection part; wherein the wiring connection part connected to any one of the first lead segments and the wiring connection part connected to any one of the second lead segments can be selectively connected to electrically connect the outlet terminal and the winding body.

[0006] Furthermore, each first lead segment and each second lead segment includes a connecting column, and each wiring connection portion includes: a connecting hole, and the connecting column is fixedly connected to the connecting hole to connect the wiring connection portion and the corresponding first lead segment, or to connect the wiring connection portion and the corresponding second lead segment.

[0007] Further, after a first lead segment and a second lead segment are connected via two wiring connection portions, central axes of the connection holes of the two wiring connection portions are coaxially arranged.

[0008] Furthermore, the multiple wiring connection parts include multiple first wiring connection parts and multiple second wiring connection parts, the multiple first wiring connection parts are connected to the second ends of the multiple first lead segments one by one, and the multiple second wiring connection parts are connected to the second ends of the multiple second lead segments one by one; wherein: the first wiring connection part has a matching recess, and the second wiring connection part has a matching protrusion, and the matching protrusion and the matching recess are interlocked to connect the first wiring connection part and the second wiring connection part.

[0009] Further, the first wiring connection portion includes a first connecting section and a first stop section, the first connecting section and the first stop section are connected and surround to form a matching recess, and the first stop section has a connecting hole; the matching protrusion includes a second connecting section and a second stop section connected to each other, and the second stop section has a connecting hole; the first connecting section and the second connecting section are connected to each other; wherein the second connecting section is located in the matching recess, and the end of the second connecting section is limitedly matched with the first stop section; the end of the first connecting section is limitedly matched with the second stop section.

[0010] Furthermore, the surface of the second connecting section away from the first connecting section is flush with the surface of the first stop section away from the first connecting section; and / or the surface of the first connecting section away from the second connecting section is flush with the surface of the second stop section away from the second connecting section.

[0011] Furthermore, the central axis of the connecting hole is located in a plane where the first connecting section and the second connecting section are connected.

[0012] Furthermore, a clamping protrusion is provided on the surface of the first connecting section on the side close to the second connecting section, and a clamping groove is provided on the surface of the second connecting section on the side close to the first connecting section, and the clamping protrusion and the clamping groove are clamped with each other.

[0013] Furthermore, a first through hole is provided on the first connecting section, a second through hole is provided on the second connecting section, the first through hole and the second through hole are butted against each other, and the transformer further comprises: a first fastener, the first fastener is passed through the first through hole and the second through hole and is threadedly connected with the first through hole and the second through hole to connect the first wiring connection part and the second wiring connection part.

[0014] Furthermore, the transformer includes: a shell having an installation space, in which the winding and multiple output terminals are located, and the shell has an inspection opening, which is arranged opposite to the multiple output terminals; a shielding structure, which is arranged at the inspection opening, and the shielding structure is detachably connected to the shell to open or close the inspection opening.

[0015] Applying the technical solution of the utility model, the transformer of the utility model includes: an outlet terminal; a winding, the winding includes a winding body, a plurality of first lead segments and a plurality of second lead segments, the first end of each first lead segment is connected to the outlet terminal, and the first end of each second lead segment is connected to the winding body; a plurality of wiring connection parts, the second end of each first lead segment is connected to at least one wiring connection part, and the second end of each second lead segment is connected to at least another wiring connection part; wherein, the wiring connection part connected to any one of the first lead segments and the wiring connection part connected to any one of the second lead segments can be selectively connected to electrically connect the outlet terminal and the winding body. Through the above arrangement, the wiring method of the transformer lead can be flexibly changed. In this way, when the connection group number of the transformer is inconsistent with the connection method actually required on site, the connection group number can be adjusted by changing the connection relationship between the multiple wiring connection parts inside the transformer, thereby greatly reducing the workload caused by adjusting the connection group number of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the internal structure of a transformer according to an embodiment of the utility model is shown;

[0018] Figure 2 A schematic structural diagram of a first lead segment and a second lead segment according to an embodiment of a transformer of the utility model is shown;

[0019] Figure 3 A schematic structural diagram showing a transformer according to an embodiment of the present utility model in which a first lead segment and a second lead segment are connected via two wiring connection portions;

[0020] Figure 4 A schematic structural diagram of a wiring connection portion of a transformer according to an embodiment of the utility model is shown;

[0021] Figure 5 A schematic structural diagram of the maintenance opening arrangement of a transformer according to an embodiment of the utility model is shown;

[0022] Figure 6 Shown according to Figure 5 An enlarged schematic diagram of region B of the transformer is shown.

[0023] The above drawings include the following reference numerals:

[0024] 1. Outlet terminal; 2. Winding; 21. Lead wire; 20. Winding body; 211. First lead wire segment; 212. Second lead wire segment; 2110. Connecting column; 3. Wiring connection portion; 31. First wiring connection portion; 32. Second wiring connection portion; 310. First through hole; 3110. Matching recess; 3111. First stop wall; 311. First stop segment; 312. First connection segment; 321. Second stop segment; 32 2. Second connecting section; 3220. Second avoidance groove; 3221. Second stop wall; 3101. First step hole; 3102. First through hole; 320. Second penetration hole; 3201. Second step hole; 3202. Second through hole; 313. Connecting hole; 4. Shell; 400. Installation space; 401. Inspection opening; 5. Shielding structure; 50. Shielding plate; 51. Second fastener; 52. Pad; 53. Sealing gasket. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to facilitate customers or suppliers to adjust the connection group number of the transformer, for example: design errors, manufacturer errors or owners need to temporarily adjust the connection group number of the transformer, etc., this application proposes a transformer, please refer to Figures 1 to 6 The transformer of the utility model includes: an outlet terminal 1; a winding 2, the winding 2 includes a winding body 20, a plurality of first lead segments 211 and a plurality of second lead segments 212, the first end of each first lead segment 211 is connected to the outlet terminal 1, and the first end of each second lead segment 212 is connected to the winding body 20; a plurality of wiring connection parts 3, the second end of each first lead segment 211 is connected to at least one wiring connection part 3, and the second end of each second lead segment 212 is connected to at least another wiring connection part 3; wherein the wiring connection part 3 connected to any one of the first lead segments 211 and the wiring connection part 3 connected to any one of the second lead segments 212 can be selectively connected to electrically connect the outlet terminal 1 and the winding body 20. Through the above-mentioned arrangement, the wiring method of the transformer leads can be flexibly changed. In this way, when the connection group number of the transformer is inconsistent with the connection method actually required on site, the connection group number can be adjusted by changing the connection relationship between the multiple wiring connection parts 3 inside the transformer, thereby greatly reducing the workload caused by adjusting the connection group number of the transformer.

[0027] In the present application, two wiring connection parts 3 are connected to each other to form a wiring terminal, and the first lead segment 211 and the second lead segment 212 are connected through the wiring terminal to form a complete lead 21 .

[0028] In the embodiments of the present application, Figure 1 The position of the A area shown is the position where the wiring terminal of the present application is set; Figure 1 Here, x, y, z, a, b, and c are all lead-out terminals of winding 2.

[0029] In order to realize the connection between the first lead segment and the second lead segment and the corresponding wiring connection part 3 respectively, in the present application, each first lead segment 211 and each second lead segment 212 includes a connecting column 2110, and each wiring connection part 3 includes: a connecting hole 313, and the connecting column 2110 is fixedly connected to the connecting hole 313 to connect the wiring connection part 3 and the corresponding first lead segment 211, or to connect the wiring connection part 3 and the corresponding second lead segment 212, so that the connection between the two lead segments is convenient.

[0030] Specifically, the connection column 2110 is fixedly connected to the wiring connection portion 3 .

[0031] Optionally, the outer wall of the connecting column 2110 is interference fit with the inner wall of the connecting hole 313; or, the connecting column 2110 and the inner wall of the connecting hole 313 are welded as a whole; or, the outer wall of the connecting column 2110 is provided with an external thread, and the inner wall of the connecting hole 313 is provided with an internal thread, so that the connecting column 2110 and the connecting hole 313 are threadedly connected through the mutual cooperation of the external thread and the internal thread; or, the outer wall of the connecting column 2110 and the inner wall of the connecting hole 313 are bonded together.

[0032] In the embodiment of the present application, after a first lead segment 211 and a second lead segment 212 are connected through two wiring connection parts 3, the central axes of the connection holes 313 of the two wiring connection parts 3 are coaxially arranged, so that the structure arrangement is reasonable after the first lead segment 211 and the second lead segment 212 are connected through the two wiring connection parts 3.

[0033] In the embodiment of the present application, the plurality of wiring connection parts 3 include a plurality of first wiring connection parts 31 and a plurality of second wiring connection parts 32, wherein the plurality of first wiring connection parts 31 are connected to the second ends of the plurality of first lead segments 211 in a one-to-one correspondence, and the plurality of second wiring connection parts 32 are connected to the second ends of the plurality of second lead segments 212 in a one-to-one correspondence; wherein: the first wiring connection part 31 has a matching recess 3110, and the second wiring connection part 32 has a matching protrusion, and the matching protrusion and the matching recess 3110 are mutually buckled to connect the first wiring connection part 31 and the second wiring connection part 32. Through the above arrangement, it is convenient to position the two wiring connection parts 3 and to connect the two wiring connection parts 3.

[0034] In the embodiments of the present application, Figure 4As shown, the first wiring connection part 31 includes a first connection section 312 and a first stop section 311, the first connection section 312 and the first stop section 311 are connected and surround to form a matching recess 3110, and the first stop section has a connection hole 313; the matching protrusion includes a second connection section 322 and a second stop section 321 connected to each other, and the second stop section has a connection hole 313; the first connection section 312 and the second connection section 322 are connected to each other; wherein the second connection section 322 is located in the matching recess 3110, and the end of the second connection section 322 is limitedly matched with the first stop section 311; the end of the first connection section 312 is limitedly matched with the second stop section 321. Through the above arrangement, the limiting accuracy between the two wiring connection parts 3 is further improved, so that the connection between the two wiring connection parts 3 is stable and reliable.

[0035] Specifically, the first connecting section 312 is located in the second avoiding groove 3220 .

[0036] Specifically, the first stop section 311 has a first stop wall 3111, the first connecting section 312 has a first connecting surface, the first stop wall 3111 and the first connecting surface are interconnected and vertically arranged to form an L-shaped groove, the second stop section 321 has a second stop wall 3221, the second connecting section 322 has a second connecting surface, the second stop wall 3221 and the second connecting surface are interconnected and vertically arranged to form an L-shaped groove; wherein the first connecting surface and the second connecting surface are interconnected.

[0037] In the present application, the surface of the second connection section 322 away from the first connection section 312 is flush with the surface of the first stop section 311 away from the first connection section 312; and / or, the surface of the first connection section 312 away from the second connection section 322 is flush with the surface of the second stop section 321 away from the second connection section 322. Through the above arrangement, after the first wiring connection part and the second wiring connection part are connected to form a wiring terminal, the various parts of the outer surface of the wiring terminal can be smoothly transitioned, preventing the protrusions at the edge of the wiring terminal from damaging the surrounding leads.

[0038] In the present application, the central axis of the connection hole 313 is located in the plane where the first connection section 312 and the second connection section 322 are connected. In this way, after the first wiring connection part and the second wiring connection part are connected to each other, the structure between the first lead section, the second lead section and the two wiring connection parts is reasonable, and the connection is stable and reliable.

[0039] In an optional embodiment of the present application, a snap-fitting protrusion is provided on the surface of the first connecting segment 312 on the side close to the second connecting segment 322, and a snap-fitting groove is provided on the surface of the second connecting segment 322 on the side close to the first connecting segment 312. The snap-fitting protrusion and the snap-fitting groove are snap-fitted to each other, so that the first connecting segment and the second connecting segment can be positioned, thereby facilitating the connection between the first connecting segment and the second connecting segment, and making the connection structure between the first connecting segment and the second connecting segment more stable and reliable.

[0040] In order to achieve a detachable connection between the first connecting section and the second connecting section, a first penetration hole 310 is provided on the first connecting section 312, and a second penetration hole 320 is provided on the second connecting section 322, and the first penetration hole 310 and the second penetration hole 320 are connected. The transformer also includes: a first fastener, the first fastener is penetrated in the first penetration hole 310 and the second penetration hole 320 and is threadedly connected with the first penetration hole 310 and the second penetration hole 320 to connect the first wiring connection part 31 and the second wiring connection part 32.

[0041] Optionally, the first fastener is a bolt or a screw.

[0042] In the embodiment of the present application, there are multiple first fasteners, multiple first penetration holes 310 and multiple second penetration holes 320, multiple first penetration holes 310 and multiple second penetration holes 320 are arranged one-to-one, and multiple first fasteners are arranged one-to-one with multiple first penetration holes 310; wherein the multiple first penetration holes 310 are arranged at intervals along the distribution direction of the first lead segment 211 and the second lead segment 212. By providing multiple first fasteners, the connection between the first connection segment 312 and the second connection segment 322 is more reliable.

[0043] like Figure 4 As shown, some of the first penetration holes 310 in the plurality of first penetration holes 310 are first step holes 3101, and another part of the first penetration holes 310 in the plurality of first penetration holes 310 located on the first wiring connection portion 31 is a first through hole 3102; some of the second penetration holes 320 in the plurality of second penetration holes 320 are second step holes 3201, and another part of the second penetration holes 320 in the plurality of second penetration holes 320 are second through holes 3202; wherein, the first step hole 3101 is butted with the second through hole 3202, and the first through hole 3102 is butted with the second step hole 3201. Through the above arrangement, after the first wiring connection portion and the second wiring connection portion are connected by the plurality of first fasteners, the plurality of first fasteners can be made to bear uniform force on the first wiring connection portion and the second wiring connection portion, thereby making the structure of the wiring terminal more stable and reliable.

[0044] In the present application, the transformer includes: a housing 4 having an installation space 400, a winding 2 and a plurality of outlet terminals 1 are located in the installation space 400, the housing 4 has an inspection opening 401, and the inspection opening 401 is arranged opposite to the plurality of outlet terminals 1; a shielding structure 5, the shielding structure 5 is arranged at the inspection opening 401, and the shielding structure 5 is detachably connected to the housing 4 to open or close the inspection opening 401. Through the setting of the shielding structure 5, when it is necessary to adjust the connection mode of the lead wire inside the transformer, the inspection opening 401 is opened through the shielding structure 5, so that it is convenient to disassemble and reassemble the wiring connection part 3 connected to the lead wire inside the transformer, and the adjustment time is further reduced.

[0045] Specifically, the shielding structure 5 includes: a shielding plate 50, which is arranged to cover the inspection opening 401; a second fastener 51, through which the shielding plate 50 is detachably connected to the housing 4; the shielding structure 5 includes a cushion block 52, which is connected to the housing 4 and is arranged around the inspection opening 401; the shielding structure 5 also includes a sealing gasket 53, which is located between the shielding plate 50 and the cushion block 52, and the sealing gasket 53 is connected to the cushion block 52, and the shielding plate 50 is connected to the cushion block 52 through the second fastener 51. Through the above arrangement, the shielding plate 50 is detachably connected to the housing, and the sealing between the shielding structure 5 and the inspection opening of the housing 4 is ensured by the arrangement of the sealing gasket 53.

[0046] Optionally, the cushion block 52 and the shell 4 are welded into an integral structure.

[0047] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0048] The transformer of the utility model comprises: an outlet terminal 1; a winding 2, the winding 2 comprises a winding body 20, a plurality of first lead segments 211 and a plurality of second lead segments 212, the first end of each first lead segment 211 is connected to the outlet terminal 1, and the first end of each second lead segment 212 is connected to the winding body 20; a plurality of wiring connection parts 3, the second end of each first lead segment 211 is connected to at least one wiring connection part 3, and the second end of each second lead segment 212 is connected to at least another wiring connection part 3; wherein the wiring connection part 3 connected to any one of the first lead segments 211 and the wiring connection part 3 connected to any one of the second lead segments 212 can be selectively connected to electrically connect the outlet terminal 1 and the winding body 20. Through the above-mentioned arrangement, the wiring method of the transformer leads can be flexibly changed. In this way, when the connection group number of the transformer is inconsistent with the connection method actually required on site, the connection group number can be adjusted by changing the connection relationship between the multiple wiring connection parts 3 inside the transformer, thereby greatly reducing the workload caused by adjusting the connection group number of the transformer.

[0049] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A transformer, characterized in that: include: Outlet terminal (1); A winding (2), the winding (2) comprising a winding body (20), a plurality of first lead segments (211) and a plurality of second lead segments (212), the first end of each of the first lead segments (211) being connected to the output terminal (1), and the first end of each of the second lead segments (212) being connected to the winding body (20); a plurality of wiring connection portions (3), wherein the second end of each of the first lead segments (211) is connected to at least one of the wiring connection portions (3), and the second end of each of the second lead segments (212) is connected to at least another of the wiring connection portions (3); The wiring connection portion (3) connected to any one of the first lead segments (211) and the wiring connection portion (3) connected to any one of the second lead segments (212) can be selectively connected to electrically connect the output terminal (1) and the winding body (20).

2. The transformer according to claim 1, characterized in that: Each of the first lead segments (211) and each of the second lead segments (212) comprises a connecting column (2110), and each of the wiring connection portions (3) comprises: A connecting hole (313), wherein the connecting column (2110) is fixedly connected to the connecting hole (313) to connect the wiring connection portion (3) and the corresponding first lead segment (211), or to connect the wiring connection portion (3) and the corresponding second lead segment (212).

3. The transformer according to claim 2, characterized in that: After one of the first lead segments (211) and one of the second lead segments (212) are connected via the two wiring connection parts (3), the central axes of the connection holes (313) of the two wiring connection parts (3) are coaxially arranged.

4. The transformer according to claim 2, characterized in that: The plurality of wiring connection parts (3) include a plurality of first wiring connection parts (31) and a plurality of second wiring connection parts (32), the plurality of first wiring connection parts (31) are connected to the second ends of the plurality of first lead segments (211) in a one-to-one correspondence, and the plurality of second wiring connection parts (32) are connected to the second ends of the plurality of second lead segments (212) in a one-to-one correspondence; wherein: The first wiring connection part (31) has a matching recess (3110), and the second wiring connection part (32) has a matching protrusion, and the matching protrusion and the matching recess (3110) are interlocked to connect the first wiring connection part (31) and the second wiring connection part (32).

5. The transformer according to claim 4, characterized in that: The first wiring connection portion (31) comprises a first connection section (312) and a first stop section (311), the first connection section (312) and the first stop section (311) are connected and surround each other to form the matching recess (3110), and the first stop section has the connection hole (313); The matching protrusion comprises a second connecting section (322) and a second stop section (321) connected to each other, and the second stop section has the connecting hole (313); the first connecting section (312) and the second connecting section (322) are connected to each other; Wherein, the second connecting section (322) is located in the matching recess (3110), and the end of the second connecting section (322) is limitedly matched with the first stop section (311); the end of the first connecting section (312) is limitedly matched with the second stop section (321).

6. The transformer according to claim 5, characterized in that: The surface of the second connecting section (322) on the side away from the first connecting section (312) is flush with the surface of the first stopping section (311) on the side away from the first connecting section (312); and / or, The surface of the first connecting section (312) on a side away from the second connecting section (322) is arranged flush with the surface of the second stopping section (321) on a side away from the second connecting section (322).

7. The transformer according to claim 5, characterized in that: The central axis of the connecting hole (313) is located in the plane where the first connecting section (312) and the second connecting section (322) are connected.

8. The transformer according to claim 5, characterized in that: A snap-fitting protrusion is provided on the surface of the first connecting section (312) on the side close to the second connecting section (322), and a snap-fitting groove is provided on the surface of the second connecting section (322) on the side close to the first connecting section (312), and the snap-fitting protrusion and the snap-fitting groove are snap-fitted to each other.

9. The transformer according to claim 5, characterized in that: The first connecting section (312) is provided with a first penetration hole (310), the second connecting section (322) is provided with a second penetration hole (320), the first penetration hole (310) and the second penetration hole (320) are butted against each other, and the transformer further comprises: A first fastener, the first fastener is inserted into the first penetration hole (310) and the second penetration hole (320) and is threadedly connected to the first penetration hole (310) and the second penetration hole (320) to connect the first wiring connection part (31) and the second wiring connection part (32).

10. The transformer according to any one of claims 1 to 9, characterized in that: The transformer comprises: A housing (4) having an installation space (400), wherein the winding (2) and the plurality of outlet terminals (1) are both located in the installation space (400), and the housing (4) has an inspection opening (401), wherein the inspection opening (401) is arranged opposite to the plurality of outlet terminals (1); A shielding structure (5), the shielding structure (5) being arranged at the inspection opening (401), the shielding structure (5) being detachably connected to the shell (4) so ​​as to open or close the inspection opening (401).

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