Three-coil parallel-winding continuous coil structure

Abstract

The utility model discloses a continuous coil structure with three wires wound in parallel, and particularly relates to the field of transformer manufacturing, which comprises three wires wound in parallel, two adjacent wires are subjected to transposition at each transposition position of an inner diameter side and an outer diameter side, the other wire is not subjected to transposition, and the three wires are subjected to one-time complete transposition after six times of transposition. The continuous coil is reasonable and simple in structure and convenient to wind, one-time complete transposition can be completed for every six sections, the problem that transposition of three parallel-wound continuous coils is incomplete is solved, and the problems that due to incomplete transposition, large circulating current is generated, transformer load loss is increased, and coil hot-spot temperature rise is caused are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer manufacturing technical field more specifically, the utility model relates to a kind of three parallel-wound continuous coil structure. BACKGROUND

[0002] For high-voltage large-capacity power transformer, the current through coil phase is very large, usually one or two transposed wire is wound to continuous coil. When transposed wire core number is too much, process problems such as small wire jump wire, inter-strand short circuit are prone to occur when winding, which threatens the safe operation of transformer. With the development of power grid, transformer capacity is increasing, and the phase current of the coil is also increasing. When the phase current of the coil is too large, it is limited by the processing capacity of the transposed wire, and the winding process of the coil is limited. Therefore, it is necessary to use three parallel-wound transposed wires to wind continuous coils. However, the traditional transposition method cannot completely transposed the three parallel-wound continuous coils, and the coil will generate a large circulating current under the action of the leakage magnetic field, thereby increasing the load loss of the transformer and the hot spot temperature rise of the coil. SUMMARY

[0003] The three parallel-wound continuous coil structure provided by the utility model solves the problem that the existing transposition method cannot completely transposed the three parallel-wound continuous coils, and the coil will generate a large circulating current under the action of the leakage magnetic field, thereby increasing the load loss of the transformer and the hot spot temperature rise of the coil.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a three parallel-wound continuous coil structure, comprising: three parallel-wound wires, two adjacent wires are transposed at each inner diameter side and outer diameter side position of the three wires, and the other wire is not transposed. After six transpositions, the three wires complete a complete transposition, i.e. the order of the three wires is the same as before the six transpositions.

[0005] In a preferred embodiment, starting from the inner diameter side, the first wire and the second wire are transposed at the inner diameter side, and the third wire is not transposed. After six transpositions, the three wires complete a complete transposition.

[0006] In a preferred embodiment, starting from the inner diameter side, the second wire and the third wire are transposed at the inner diameter side, and the first wire is not transposed. After six transpositions, the three wires complete a complete transposition.

[0007] The utility model has the advantages of:

[0008] The utility model discloses rational simple structure, and winding is convenient, and can complete once complete transposition every six sections, solve the problem of three parallel winding continuous coil transposition not complete, avoid the problem of producing great circulation, increasing transformer load loss and coil hot spot temperature rise because of transposition not complete. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the schematic view of the utility model embodiment one.

[0010] Fig. 2 It is the schematic view of the utility model embodiment two.

[0011] The figure sign is: 1, the wire. DETAILED DESCRIPTION

[0012] It is necessary to point out here that the following specific embodiments are only used for further illustrating the application, and cannot be understood as limiting the protection scope of the application, and the person skilled in the art can make some non-essential improvements and adjustment to the application according to the above application content.

[0013] Embodiment one

[0014] Refer to the description attached Figs. 1-2 A three parallel winding continuous coil structure, comprising: three parallel winding wires 1, at every inner diameter side and outer diameter side transposition, two adjacent wires 1 are staggered transposition, another wire 1 is not staggered transposition, after six times staggered transposition, three wires 1 complete once complete staggered transposition, that is, the order of three wires 1 is same with the order before six times transposition.

[0015] It should be noted that the total number of coil sections is six times, and only two adjacent wires are staggered transposition at every inner diameter side and outer diameter side transposition, and another wire is not staggered transposition, after six times staggered transposition, three wires 1 complete once complete staggered transposition, when the total number of coil sections is six times, three wires 1 complete staggered transposition, when coil 1 works, the position of wire 1 determines the magnetic field distribution and the change of magnetic chain, after complete transposition, every wire 1 works in different position, therefore the magnetic field distribution and the change of magnetic chain are uniform and balanced, and the magnetic field formed by leakage from the magnetic field unable to completely concentrate in coil 1, in the staggered transposition process of coil 1, the position exchange of wire 1 will cause the distribution of leakage magnetic field to change, but because every wire 1 will experience the same magnetic field distribution in different position after transposition, the influence of leakage magnetic field is evenly dispersed on the whole coil, and will not cause the generation of circulation.

[0016] It should be noted that, by transposition operation, each wire 1 can work in different positions, thereby reducing the impact of uneven wear and tear, prolonging the service life of the coil, and allowing each wire 1 to have the opportunity to cool in different positions, thereby evenly dispersing heat and reducing the overall temperature rise of the coil.

[0017] Referring to the drawings accompanying the specification Fig. 1 The first wire 1 and the second wire 1 are first staggered and transposed on the inner diameter side, and the third wire 1 is not staggered and transposed. After six staggered transpositions, the three wires 1 complete a complete staggered transposition.

[0018] It should be noted that the total number of segments of the coil is a multiple of six, the first wire 1 and the second wire 1 are first staggered and transposed, the third wire 1 is not staggered and transposed, and after six staggered transpositions, the three wires 1 complete a complete staggered transposition.

[0019] Example two

[0020] Referring to the drawings accompanying the specification Fig. 2 The second wire 1 and the third wire 1 are first staggered and transposed on the inner diameter side, and the first wire 1 is not staggered and transposed. After six staggered transpositions, the three wires 1 complete a complete staggered transposition.

[0021] It should be noted that the total number of segments of the coil is a multiple of six, the second wire 1 and the third wire 1 are first staggered and transposed, the first wire 1 is not staggered and transposed, and after six staggered transpositions, the three wires 1 complete a complete staggered transposition.

[0022] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A three-finger continuous coil structure characterized by, Comprising: Three parallel wound wires (1), two adjacent wires (1) are transposed at each inner diameter side and outer diameter side position, the other wire (1) is not transposed, after six times of transposition, three wires (1) complete a complete transposition, that is, the order of three wires (1) is the same as that before six times of transposition.

2. A three-finger continuous coil structure according to claim 1, characterized in that: Starting from the inner diameter side, the first wire (1) and the second wire (1) are transposed at the inner diameter side, the third wire (1) is not transposed, after six times of transposition, three wires (1) complete a complete transposition.

3. A three-finger continuous coil structure according to claim 1, wherein: Starting from the inner diameter side, the second wire (1) and the third wire (1) are transposed at the inner diameter side, the first wire (1) is not transposed, after six times of transposition, three wires (1) complete a complete transposition.

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