Novel high-voltage D-connection combined lead transformer structure

Abstract

The utility model discloses a novel high-voltage D-connection combined lead transformer structure which comprises an iron core framework, and three high-voltage coils are installed on the iron core framework in a sleeved mode. The side face of the high-voltage coil is connected through an A-Z high-voltage lead, a B-X high-voltage lead and a C-Y high-voltage lead. The two ends of the A-Z high-voltage lead are bent to be of a Z-shaped structure, and the middle of the A-Z high-voltage lead protrudes towards the outer side of the high-voltage coil. The B-X high-voltage lead and the C-Y high-voltage lead are the same in structure, the two ends of the B-X high-voltage lead and the two ends of the C-Y high-voltage lead are both bent to be of a Z-shaped structure, and middle protrusions of the B-X high-voltage lead and the middle protrusions of the C-Y high-voltage lead face the inner side of the high-voltage coil And the insulation distance L of the overlapped part of every two high-voltage leads is equal to L1 + L2, so that the electrical insulation distance between the leads in a special use environment is ensured. By using the combined lead, on the premise that the appearance size of the transformer is not increased, the structural advantages of the combined lead are fully utilized, and the effect that 1 + 1 > 2 is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer structure design, and particularly relates to a novel high-voltage D-connected combined lead transformer structure. Background Art

[0002] The wires connecting the external leads at the outside of the transformer winding are called leads. Electric energy from an external power source is input into the transformer through the leads, and the transmitted electric energy is also output from the transformer to the outside through the leads. The lead structure is an important part of the transformer, especially the high-voltage lead structure. A reasonable lead structure affects the overall electrical safety performance, mechanical performance and the external dimensions of the transformer.

[0003] When the existing connection method on the high-voltage side of the transformer is D-connection, as Figure 1 shown, copper tubes or copper bars of corresponding specifications are selected to connect A-Z; B-X; C-Y according to the magnitude of the high-voltage rated current. At this time, the insulation distance between two adjacent leads is L. When the transformer operates in a high-voltage or high-altitude environment, the electrical safety performance is relatively low and it is difficult to meet the requirements under special use environments. Summary of the Invention

[0004] The purpose of the utility model is to provide a novel high-voltage D-connected combined lead transformer structure. Through reverse thinking, local improvements are made on the original high-voltage lead structure, making full use of the self-advantages of the high-voltage coil structure, further enhancing the electrical safety performance of the product under special use environments without increasing the production cost of the product, and improving the market competitiveness of the product.

[0005] To solve the above technical problems, the utility model provides a novel high-voltage D-connected combined lead transformer structure, which includes an iron core skeleton, and three high-voltage coils are sleeved and installed on the iron core skeleton;

[0006] The sides of the high-voltage coils are connected through A-Z high-voltage leads, B-X high-voltage leads and C-Y high-voltage leads;

[0007] Both ends of the A-Z high-voltage lead are bent into a Z-shaped structure, and the middle part of the A-Z high-voltage lead bulges towards the outside of the high-voltage coil;

[0008] The B-X high-voltage lead and the C-Y high-voltage lead have the same structure, both ends are bent into a Z-shaped structure, and the middle parts of the B-X high-voltage lead and the C-Y high-voltage lead both bulge towards the inside of the high-voltage coil.

[0009] Preferably, the A-Z high-voltage lead includes a first convex part, both ends of the first convex part are first Z-shaped wiring parts, the first convex part faces the outside of the high-voltage coil, and the first Z-shaped wiring parts at both ends are connected to the wiring terminals of the high-voltage coil.

[0010] Preferably, the distance formed between the first convex portion and the first Z-shaped wiring portion is L1.

[0011] Preferably, the B-X high-voltage lead includes a second convex portion, with both ends of the second convex portion being second Z-shaped wiring portions. The second convex portion faces the inner side of the high-voltage coil, and the second Z-shaped wiring portions at both ends are connected to the wiring terminals of the high-voltage coil.

[0012] Preferably, the distance formed between the second convex portion and the second Z-shaped wiring portion is L2.

[0013] Preferably, the A-Z high-voltage lead, B-X high-voltage lead, and C-Y high-voltage lead adopt bent copper tubes or copper bars.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. For the A-Z high-voltage lead, B-X high-voltage lead, and C-Y high-voltage lead of the novel high-voltage D-connected combined lead transformer structure, they are relatively installed on the side of the high-voltage coil. The insulation distance of the overlapping part of any two high-voltage leads is L = L1 + L2, ensuring the electrical insulation distance between the leads under special use environments. The use of this combined lead makes full use of its own structural advantages without increasing the external dimensions of the transformer, achieving the effect of 1 + 1 > 2;

[0016] 2. Both ends of the A-Z high-voltage lead, B-X high-voltage lead, and C-Y high-voltage lead of the novel high-voltage D-connected combined lead transformer structure are bent into a Z-shaped structure, and the bending angle can be flexibly adjusted according to specific situations;

[0017] 3. The A-Z high-voltage lead, B-X high-voltage lead, and C-Y high-voltage lead of the novel high-voltage D-connected combined lead transformer structure adopt bent copper tubes or copper bars. Under the same installation straight-line distance, the mechanical strength of the leads with bent copper tubes or copper bars at both ends is higher than that of the straight copper tubes or copper bars. Description of the Drawings

[0018] Figure 1 is a side view of the original high-voltage D-connected combined lead transformer structure;

[0019] Figure 2 is a front view of the novel high-voltage D-connected combined lead transformer structure provided by the present utility model;

[0020] Figure 3 is a side view of the novel high-voltage D-connected combined lead transformer structure provided by the present utility model;

[0021] Figure 4 is a schematic structural diagram of the A-Z high-voltage lead provided by the present utility model;

[0022] Figure 5 It is a schematic structural diagram of the B-X high-voltage lead provided by the present utility model.

[0023] In the figure: 1. Iron core skeleton; 2. High-voltage coil; 3. A-Z high-voltage lead; 4. B-X high-voltage lead; 5. C-Y high-voltage lead; 301. First convex part; 302. First Z-shaped wiring part; 401. Second convex part; 402. Second Z-shaped wiring part. Detailed implementation manners

[0024] The following further detailed description of the present utility model is made in conjunction with the accompanying drawings and specific embodiments. According to the following description and the claims, the advantages and features of the present utility model will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the purpose of the embodiments of the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0027] In addition, the features, operations, and characteristics described in the specification can be combined in any suitable manner to form various embodiments. Similarly, the steps or actions described in the method can also be adjusted in sequence in a manner that can be easily seen by those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment, rather than a necessary sequence, unless it is stated otherwise that a certain sequence must be followed. Embodiment

[0028] The present utility model provides a novel high-voltage D-connected combined lead transformer structure. Please refer to Figure 2-3 , which includes an iron core skeleton 1, and three high-voltage coils 2 are sleeved and installed on the iron core skeleton 1; the sides of the high-voltage coils 2 are connected by an A-Z high-voltage lead 3, a B-X high-voltage lead 4, and a C-Y high-voltage lead 5; both ends of the A-Z high-voltage lead 3 are bent into a Z-shaped structure, and the middle of the A-Z high-voltage lead 3 protrudes towards the outside of the high-voltage coil 2; the B-X high-voltage lead 4 and the C-Y high-voltage lead 5 have the same structure, both ends are bent into a Z-shaped structure, and the middle protrusions of the B-X high-voltage lead 4 and the C-Y high-voltage lead 5 both protrude towards the inside of the high-voltage coil 2.

[0029] Specifically, please refer to Figure 4 , the A-Z high-voltage lead 3 includes a first protrusion 301, both ends of the first protrusion 301 are first Z-shaped connection parts 302, the first protrusion 301 faces the outside of the high-voltage coil 2, and the first Z-shaped connection parts 302 at both ends are connected to the connection terminals of the high-voltage coil 2.

[0030] Furthermore, the distance formed between the first protrusion 301 and the first Z-shaped connection part 302 is L1.

[0031] Specifically, please refer to Figure 5 , the B-X high-voltage lead 4 includes a second protrusion 401, both ends of the second protrusion 401 are second Z-shaped connection parts 402, the second protrusion 401 faces the inside of the high-voltage coil 2, and the second Z-shaped connection parts 402 at both ends are connected to the connection terminals of the high-voltage coil 2.

[0032] Furthermore, the distance formed between the second protrusion 401 and the second Z-shaped connection part 402 is L2.

[0033] When the A-Z high-voltage lead 3, B-X high-voltage lead 4, and C-Y high-voltage lead 5 are oppositely installed on the side of the high-voltage coil 2, the insulation distance of the overlapping part of the two high-voltage leads is L = L1 + L2, ensuring the electrical insulation distance between the leads in a special use environment. The use of this combined lead makes full use of its own structural advantages without increasing the external dimensions of the transformer, achieving the effect of 1 + 1 > 2.

[0034] In some embodiments, the A-Z high-voltage lead 3, B-X high-voltage lead 4, and C-Y high-voltage lead 5 are made of bent copper tubes or copper bars. At the same installation straight-line distance, the mechanical strength of the lead with bent copper tubes or copper bars at both ends is higher than that of the straight copper tube or copper bar lead.

[0035] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention based on the above disclosure are within the scope of protection of the claims.

Claims

1. A new type of high voltage D-connected combined lead transformer structure, characterized in that: It comprises an iron core frame (1), on which three high-voltage coils (2) are sleeved and mounted; The side surfaces of the high-voltage coil (2) are connected via an AZ high-voltage lead (3), a BX high-voltage lead (4) and a CY high-voltage lead (5); Both ends of the AZ high-voltage lead wire (3) are bent into a Z-shaped structure, and the middle portion of the AZ high-voltage lead wire (3) is protruding toward the outside of the high-voltage coil (2); The BX high-voltage lead (4) and the CY high-voltage lead (5) have the same structure, both ends of which are bent into a Z-shaped structure, and the middle protrusions of the BX high-voltage lead (4) and the CY high-voltage lead (5) are both oriented toward the inside of the high-voltage coil (2).

2. A novel high voltage D-connected combined lead transformer structure as claimed in claim 1, characterized in that: The AZ high-voltage lead (3) comprises a first protruding portion (301), the first protruding portion (301) having first Z-shaped connecting portions (302) at both ends, the first protruding portion (301) facing the outside of the high-voltage coil (2), and the first Z-shaped connecting portions (302) at both ends being connected to connecting terminals of the high-voltage coil (2).

3. A novel high voltage D-connected combined lead transformer structure as claimed in claim 2, characterized in that: The distance between the first protruding portion (301) and the first Z-shaped connecting portion (302) is L1.

4. A novel high voltage D-connected combined lead transformer structure as claimed in claim 1, characterized in that: The BX high-voltage lead (4) comprises a second protruding portion (401), the second protruding portion (401) having second Z-shaped connecting portions (402) at both ends, the second protruding portion (401) facing the inside of the high-voltage coil (2), and the second Z-shaped connecting portions (402) at both ends are connected to the connecting terminals of the high-voltage coil (2).

5. A novel high voltage D-connected combined lead transformer structure as claimed in claim 4, characterized in that: The distance between the second protruding portion (401) and the second Z-shaped connecting portion (402) is L2.

6. A novel high voltage D-connected combined lead transformer structure as claimed in claim 1, characterized in that: The AZ high-voltage lead (3), the BX high-voltage lead (4) and the CY high-voltage lead (5) are made of bent copper tubes or copper bars.

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