A method for winding a structure coil of a double continuous outlet substation

Abstract

The application relates to a double-continuous tap structure coil winding method, which comprises the following steps: step one: arranging the reverse sections H1 and H2 of the conductor in parallel along the coil axial direction, and winding the temporary reverse sections of the H1 and H2 sections; step two: firstly, folding the temporary reverse section of the H1 section, and the temporary reverse section of the H2 section is not moved; step three: after the folding of the H1 section is completed, placing an insulating piece on the H1 section; step four: after the placing of the insulating piece on the H1 section is completed, folding the temporary reverse section of the H2 section; step five: winding the positive sections H3 and H4, wherein the H3 section is wound along the radial direction of the coil, and the H4 section is wound along the axial direction of the coil; step six: placing an insulating piece on the H3 section; step seven: after the placing of the insulating piece on the H3 section is completed, reversely stacking the conductor of the H4 section one by one from top to bottom. The application is more simple and convenient to operate, can guarantee that the conductor of each section is attached to the insulating piece, and can avoid damage of the insulating piece and product quality hidden danger.

Description

Technical Field

[0001] This invention relates to the field of transformer manufacturing, specifically a method for winding coils with a double continuous tap changer structure. Background Technology

[0002] In the field of transformers, the double continuous tap-out coil structure is a relatively common coil structure. Existing double continuous coil winding methods are derived from continuous coil winding methods. For example, Chinese invention patent CN1315137C discloses a method for winding a double continuous coil. This method uses two wires to wind simultaneously. First, the positive section of the double continuous coil is wound until the specified number of turns. Then, the two wires are simultaneously swapped between the support bars. Next, the two wires simultaneously begin winding the adjacent section along the outer diameter side of the paper tube until the last temporary section, which is always wound with two wires simultaneously. Chinese invention patent CN100385581C discloses a method for winding a double continuous coil with multiple parallel wires. It changes the position of the temporary section of the upper and lower coils in the reverse section (that is, the upper and lower coils in the formal reverse section become the lower and upper coils of the temporary section when the temporary section is wound), thereby solving the problem of mutual interference and kinking of the two coil wires when the reverse section is folded. However, the existing operating methods still fail to fully incorporate the characteristics of the double continuous coil structure, resulting in problems such as poor fit between the wire segment and the insulation, and the need for secondary correction after the coil is completed. Summary of the Invention

[0003] The purpose of this invention is to provide a method for winding coils with a dual continuous tap structure, which is simpler and more convenient to operate, while ensuring that each section of wire is in close contact with the insulation component, avoiding damage to the insulation component, and avoiding potential product quality problems.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A method for winding a coil with a dual continuous tap changer structure includes the following steps:

[0006] Step 1: Arrange the reverse sections H1 and H2 along the coil axis side by side, and wind temporary reverse sections H1 and H2.

[0007] Step 2: First, fold the temporary reverse section of H1, leaving the temporary reverse section of H2 unchanged;

[0008] Step 3: After the H1 segment is folded, place an insulating component on the H1 segment;

[0009] Step 4: After the insulating parts on section H1 are placed, the temporary reverse section of section H2 is flipped over;

[0010] Step 5: After the reverse segments H1 and H2 are arranged, start winding the forward segments H3 and H4. The H3 segment is wound radially along the coil, and the H4 segment is wound axially from bottom to top along the coil.

[0011] Step Six: Place the insulating component on segment H3;

[0012] Step 7: After the insulation on section H3 is placed, the conductors in section H4 are coiled in reverse order from top to bottom.

[0013] In step one, after the temporary reverse sections H1 and H2 have completed the required number of turns as designed, the bottom "S" transposition is created.

[0014] The insulating components include wedge-shaped pads, inner diameter process paper pads, interlayer pads, and pad blocks.

[0015] The advantages and positive effects of this invention are as follows:

[0016] 1. When the reverse section is wound according to the present invention, after the temporary reverse section of H1 and H2 is wound, the temporary reverse section of H1 conductor is first folded over, and then wedge-shaped pads and other insulating materials are placed on H1. At this time, since only H1 is folded over and H2 is not moved, there is enough space between H1 and H2 to place the insulating materials. There are no obstructions on the surface of H1, making the operation simpler and more convenient. After H2 is folded over, it can ensure that the conductor and the insulating materials are in close contact.

[0017] 2. When the positive segment of the present invention is wound, the H3 segment is wound radially along the coil and the H4 segment is wound axially along the coil. Then, a wedge-shaped pad or other insulating material is placed on the H3 segment. Since the H4 segment is wrapped around the coil insulation cylinder from bottom to top, there is no obstruction on the H3 segment, making the operation simpler and more convenient. Furthermore, after the H4 segment is folded, it can ensure that the wire segment and the insulating material are in close contact.

[0018] 3. In this invention, when the insulating component is placed in the reverse section or the forward section, there are no obstructions in sections H1 and H3, so the insulating component will not be affected by interference or impact. Therefore, it can effectively ensure that the insulating component will not be damaged and avoid potential product quality problems. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the dual continuous structure tap coil of the present invention.

[0020] Figure 2 This is a schematic diagram of the reverse winding of the tap changer coil in the dual continuous structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the winding of the positive section of the tap coil in the dual continuous structure of the present invention. Detailed Implementation

[0022] The invention will now be described in further detail with reference to the accompanying drawings.

[0023] like Figures 1-3 As shown, the present invention includes the following steps:

[0024] I. Reverse winding:

[0025] Step 1: Arrange the two transposition (H1 and H2 segments) wires side by side along the coil axis, and fix the starting ends of H1 and H2 segments to the inner diameter side of the coil. Wind the temporary reverse segments of H1 and H2 segments. After the temporary reverse segments of H1 and H2 have been wound to the design specified number of turns, make the bottom "S" transposition (the winding of the temporary reverse segments is the same as the conventional winding method).

[0026] Step 2: Begin folding the reverse segments. First, fold the H1 segment wire. The folding method is to fold each layer of the temporary reverse segment of H1 segment onto the inner diameter side of the coil in sequence. The H2 segment wire remains unchanged for the time being.

[0027] Step 3: After the H1 segment conductor is flipped, as follows Figure 2 As shown, at this time, segment H1 is adjacent to segment E. Then, according to the design requirements, wedge-shaped pads, inner diameter process paper pads, interlayer pads, pad blocks and other insulating components are placed on segment H1. Since only segment H1 is folded and segment H2 remains stationary (corresponding to the position of the first turn of the inner layer of segment H2), there is enough space between segment H1 and segment H2 to place the insulating components. There are no obstructions on the surface of segment H1. The operation is simple and convenient. This method can also avoid interference and impact on the insulating components, thus effectively ensuring that the insulation of the conductors in segments H1 and H2 will not be damaged.

[0028] Step 4: After the insulation on section H1 is placed, fold the conductor in section H2 using the same method, as shown below. Figure 2 As shown, the H2 segment after folding is adjacent to the H1 segment, and each insulating component is placed between the H1 and H segments to ensure insulation, while also ensuring that the coil of the line segment is in close contact with the insulating component. After the H2 segment conductor is folded, the double continuous tap-out reverse segment (H1 and H2 segments) is wound.

[0029] II. Main section winding:

[0030] Step 5: After the reverse segments H1 and H2 are prepared, begin winding the forward segments H3 and H4. At this time, both wires H3 and H4 are wound simultaneously. For example... Figure 3 As shown, the starting ends of segments H3 and H4 are fixed on the inner diameter side of the coil. Segment H3 is wound radially along the coil, and segment H4 is wound axially along the coil. After winding, the state is that segment H4 is wrapped around the coil insulation cylinder from bottom to top (coil axial direction), and segment H3 is arranged from the inner diameter side of the coil to the outer diameter side (coil radial direction).

[0031] Step Six: After winding sections H3 and H4 to the required number of turns, place insulating components such as wedge-shaped pads, inner diameter process paper strips, interlayer spacers, and pad blocks on section H3. Figure 3 As shown, there are no obstructions on section H3 at this time, making the operation simple and convenient, and effectively ensuring that the insulation of the conductors in sections H3 and H4 will not be damaged.

[0032] Step 7: After the insulation on section H3 is placed, the conductors of section H4 are flipped in reverse order from top to bottom. After all the flipping is completed, section H4 is placed next to section H3, and the insulation is placed between sections H3 and H4. Ensure that the coil of the conductor is in close contact with the insulation. The double continuous tap section (sections H3 and H4) is then wound.

Claims

1. A method for winding a coil with a double continuous tap-out structure, characterized in that: Includes the following steps: Step 1: Arrange the reverse sections H1 and H2 along the coil axis side by side, and wind temporary reverse sections H1 and H2. Step 2: First, fold the temporary reverse section of H1, leaving the temporary reverse section of H2 unchanged; Step 3: After the H1 segment is folded, place an insulating component on the H1 segment; Step 4: After the insulating parts on section H1 are placed, the temporary reverse section of section H2 is flipped over; Step 5: After the reverse segments H1 and H2 are arranged, start winding the forward segments H3 and H4. The H3 segment is wound radially along the coil, and the H4 segment is wound axially from bottom to top along the coil. Step Six: Place the insulating component on segment H3; Step 7: After the insulation on section H3 is placed, the conductors in section H4 are coiled in reverse order from top to bottom.

2. The method for winding a coil with a double continuous tap-out structure according to claim 1, characterized in that: In step one, after the temporary reverse sections H1 and H2 have completed the required number of turns as designed, the bottom "S" transposition is created.

3. The method for winding a coil with a double continuous tap-out structure according to claim 1, characterized in that: The insulating components include interlayer spacers and spacers.

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