WO2018233204A1 - 一种立体卷铁心敞开干式变压器线圈结构及其绕制方法 - Google Patents

一种立体卷铁心敞开干式变压器线圈结构及其绕制方法 Download PDF

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Publication number
WO2018233204A1
WO2018233204A1 PCT/CN2017/112734 CN2017112734W WO2018233204A1 WO 2018233204 A1 WO2018233204 A1 WO 2018233204A1 CN 2017112734 W CN2017112734 W CN 2017112734W WO 2018233204 A1 WO2018233204 A1 WO 2018233204A1
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Prior art keywords
coil
winding
wound
positive
dimensional
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PCT/CN2017/112734
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English (en)
French (fr)
Inventor
许凯旋
翟丽珍
梁庆宁
罗景桃
周利波
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海鸿电气有限公司
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Application filed by 海鸿电气有限公司 filed Critical 海鸿电气有限公司
Priority to US16/483,993 priority Critical patent/US20190392981A1/en
Priority to DE112017006719.7T priority patent/DE112017006719T5/de
Publication of WO2018233204A1 publication Critical patent/WO2018233204A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/076—Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire

Definitions

  • the invention and the technical field of power equipment relate to a transformer coil structure and a winding method thereof.
  • the advantages of the three-dimensional coil core open dry-type transformer products have been affirmed by the majority of users.
  • the traditional three-dimensional coil core open dry-type transformer coil mainly adopts a full-positive continuous structure, which causes the coil portion head and tail and tap tap It must be taken out from the inside of the coil, which increases the difficulty of the operation of the tapping part.
  • the process is complicated, which greatly limits the production efficiency, increases the production cost, and reduces the safety of the transformer during operation; especially when the coil current is large And a lot of wires around, it is difficult to achieve from the inside of the coil, which limits the use of the coil structure, so that it can only be used on small current transformer coils, resulting in a lack of market competitiveness; in addition, due to the use of the inner diameter of the existing coil
  • the insulating spacer between the strip and the segment needs to consume a large amount of the spacer material; and because the contact area of the insulated conductor and the spacer is large in the conventional structure, the heat dissipation surface of the coil is small, which greatly limits the heat dissipation capability of the coil. Therefore, it is necessary to improve and optimize the existing three-dimensional wound core open dry transformer coil and its winding method.
  • the present invention provides a novel three-dimensional winding core open dry transformer coil structure adopting a positive segment and an alternating structure of positive and negative segments to optimize structure, reduce cost, improve productivity, and widen the use range of the coil; At the same time, a method of winding the coil structure is provided to simplify the process and improve production efficiency.
  • a three-dimensional winding core open dry transformer coil structure comprises a three-dimensional winding core, an insulating cylinder disposed outside the three-dimensional winding core, and a coil winding wound on the insulating cylinder, the coil winding is wound by an insulated wire, the outer side of the insulating cylinder Uniformly arranged with comb-shaped stays, insulated wires are wound between the racks of the comb-shaped stays, coil winding taps are connected to the coil windings, coil taps are taken out to the coil winding surface, and the winding ends are led out and led out The portion of the coil tapping tap is wound into a positive and negative hybrid coil, and the remaining portion is wound into a full positive coil.
  • the coil winding comprises a plurality of turns connected by a transposition line, each line being placed between two racks of the comb stay, and the front and back section hybrid coils comprise alternatingly wound positive and negative lines ⁇ , the transposition line of each group of positive segment ⁇ and reverse segment ⁇ is located on the surface of the hybrid coil of the positive and negative segments; the full positive segment coil includes several segments of the positive segment ⁇ , and the exchange between adjacent two positive segments
  • the bit line is connected from one surface to the inner circumference of the other.
  • the positive section wire is continuously wound from the inside to the outside perpendicular to the insulating cylinder, and the reverse section line is continuously wound from the inside to the outside in the opposite direction to the positive section.
  • the insulated wire is a single-strand wire or a plurality of wires and wound around the wire according to actual needs.
  • the comb struts are bonded to the outside of the insulating cylinder with the racks facing outward, and the corresponding racks of all the comb struts are placed at the same height.
  • the comb stay is made of an insulating material.
  • a reverse twist line is wound between the two lower racks of the comb stay, so that the initial thread is placed on the surface of the reverse line, and then wound upwards in turn.
  • a full positive segment coil comprising a plurality of positive section turns;
  • the coils of the forward and reverse sections are wound at a portion where the tap taps of the coils are required to be drawn, and the tap taps are taken out at the transposition lines of each of the positive and negative turns of the positive and negative sections of the hybrid coil.
  • a temporary positive section is first wound, and then the temporary positive section is sequentially folded from the outside to the inside to the rack of the specified comb stay, and is tightened to form a reverse line. .
  • the full positive section coil is continuously wound, and each of the positive section turns is sequentially wound from the inside to the outside.
  • the invention has the beneficial effects that: by using the comb-shaped struts, the insulated wires are wound directly between the racks of the comb-shaped struts, thereby eliminating the inner diameter stays and the inter-segment insulating spacers used in the existing coils, thereby saving A large number of spacer materials; and because the contact area of the comb-shaped struts and the insulated wires is much smaller than the contact area between the insulated wires and the spacers in the conventional structure, the coil has a larger surface heat dissipation surface under the same coil volume, Largely improve the heat dissipation capability of the coil; by winding the coil winding into a continuous coil structure comprising a full positive segment coil and a positive and negative segment hybrid coil, all the head, tail and tap taps of the coil are directly on the coil surface.
  • the extraction avoids the process complexity of the coil tapping of the existing structural part in the coil, improves the production efficiency and the safety of the transformer operation; in addition, since all the heads, tails and taps of the coil are directly on the surface of the coil Leading out, can effectively optimize the transformer coil structure, reduce the difficulty and cost of production, improve the competitiveness of the transformer market, and make the application range of the coil more , To meet the needs of the transformer coil structure of various capacities, particularly when used in high-current product advantages become more prominent.
  • Figure 1 is a development view of a coil winding structure of the present invention
  • Figure 2 is a side elevational view showing the comb-shaped stay of the present invention.
  • a three-dimensional wound core open dry transformer coil structure of the present invention comprises a three-dimensional wound core, an insulating cylinder disposed outside the three-dimensional core, and a coil winding wound on the insulating cylinder, and the coil winding is insulated
  • the wire 1 is wound, and the outside of the insulating cylinder is evenly disposed with a comb stay 2, and the comb stay 2 is bonded to the outside of the insulating cylinder, the rack 21 faces outward, and the corresponding rack 21 of all the comb stays 2 Placed at the same height so that the insulated wire 1 is wound from the bottom to the upper layer to form a plurality of turns, and the comb stay 2 is made of an insulating material, and the insulated wire is wound directly around each turn by using a comb stay.
  • the insulated wire 1 is a single-strand wire or a plurality of wires wound according to actual requirements to meet the needs of transformers of different current sizes.
  • the insulated wire 1 is wound between the racks 21 of the comb stay 2, and the coil winding is connected with a coil tapping tap 11 which leads to the surface of the coil winding, the leading end of the coil winding and the tapping tap of the lead coil
  • the portion of 11 is wound into the front and back section hybrid coil 12, and the remaining portion is wound into the full positive section coil 13.
  • the process complexity of tapping the tap inside the coil improves the production efficiency and the safety of the transformer operation; in addition, since all the head, tail and tap taps of the coil are directly led out on the coil surface, the transformer coil structure can be effectively optimized. Reduce the difficulty and cost of production, improve the competitiveness of the transformer market, make the coil more applicable, and meet the needs of transformer coil structures of various capacities, especially for high current products.
  • the coil winding comprises a plurality of turns connected by a transposition line 14, each of which is placed between the two racks 21 of the comb stay 2, the front and back section of the hybrid coil 12 comprising alternating positive turns and opposite
  • the segment line ⁇ , the transposition line 14 of each group of the positive segment line ⁇ and the reverse segment line ⁇ is located on the surface of the front and back segment hybrid coil 12, the transposition line 14 leads the coil tapping tap 11; the full segment coil 13
  • a plurality of segments of the segment line are included, and the transposition line 14 between the adjacent two segments is connected from one surface to the inner ring of the other.
  • the positive line ⁇ is continuously wound from the inside to the outside perpendicular to the insulating cylinder, and the reverse line ⁇ is continuously wound from the inside to the outside in the opposite direction to the positive line. Since the coil tapping taps are all directly led out on the surface of the coil, the operation process is greatly simplified, and the safety hazard and process complexity brought about by the coil tapping of the existing structural part of the coil need to be taken out inside the coil.
  • the winding process of the coil of the present invention is as follows:
  • An insulating cylinder is first disposed outside the three-dimensional core, and the comb stays 2 are uniformly bonded outside the insulating cylinder, and the coil windings are formed by winding the insulated wires 1 between the racks 21 of the comb stays 2.
  • the coil winding is wound from bottom to top, and a reverse twist line ⁇ is wound between the two racks 21 of the lowermost layer of the comb stay 2, so that the initial thread head is placed on the surface of the reverse line, and the reverse line ⁇ When winding, a temporary positive section is first wound, and then the temporary positive section is sequentially folded from the outside to the inside to the rack 21 of the designated comb stay 2, and the reverse section turns.
  • the full-positive coil 13 including a plurality of positive-section turns is sequentially wound upward, and each of the positive turns is sequentially wound from the inside to the outside, and the adjacent two straight lines are sequentially wound.
  • the transposition line 14 of the crucible is connected from the outer ring of the lower one to the inner ring of the upper one.
  • the winding coil 12 of the front and back sections is wound, and the number of the positive and negative turns of the hybrid coil 12 of the front and back sections is as needed.
  • the number of tapped taps of the lead coil is determined.
  • the positive segment line ⁇ of each group of the positive segment line and the reverse segment line ⁇ is located below, the reverse line line ⁇ is located above, and the transposition line 14 is placed outside the coil, in which the change The coil tap 14 is taken up at the bit line 14.
  • the full-segment coil 13 is continuously wound until the winding of the coil winding is completed, and the coil of the uppermost turn is a positive segment, and the wire of the insulated wire is still placed outside the coil.

Abstract

一种立体卷铁心敞开干式变压器线圈结构及其绕制方法，包括立体卷铁心、设置在立体卷铁心外的绝缘筒和绕制在绝缘筒上的线圈绕组，线圈绕组由绝缘导线(1)绕制，所述绝缘筒外侧均匀的设置有梳形撑条(2)，绝缘导线(1)绕在梳形撑条(2)的齿条(21)之间，线圈绕组上接有线圈分接抽头(11)，线圈分接抽头(11)引出至线圈绕组表面，线圈绕组的首端和引出线圈分接抽头(11)的部位绕制为正反段混合线圈(12)，其余部位绕制为全正段线圈(13)。通过采用梳形撑条(2)，节约了大量垫块用材，极大的提高了线圈的散热能力；通过将线圈绕组绕制为全正段线圈(13)和正反段混合线圈(12)相结合的连续式线圈结构，保证线圈所有头、尾和分接抽头(11)均在表面引出，避免了线圈分接抽头(11)在线圈内部引出的工艺复杂性。

Description

一种立体卷铁心敞开干式变压器线圈结构及其绕制方法
技术领域
本发明渉及电力设备技术领域，特别是涉及一种变压器线圈结构及其绕制方法。
背景技术
目前，立体卷铁心敞开干式变压器产品的优势已得到广大用户的肯定，然而传统立体卷铁心敞开干式变压器线圈主要采用全正段连续式结构，这种结构造成线圈部分头尾和分接抽头必须从线圈内侧引出，这样就增大了抽头部位的操作难度，工艺比较复杂，极大的限制了生产效率，提高了制作成本，也降低了变压器运行时的安全性；特别是线圈电流大时并绕导线很多，从线圈内侧出头很难实现，这样就限制了线圈结构的使用范围，使其只能使用在小电流变压器线圈上，以致缺乏市场竞争力；此外，由于现有线圈使用内径撑条和段间绝缘垫块，需要消耗大量的垫块用材；且由于传统结构中绝缘导线与垫块的接触面积较大，线圈的散热面较小，极大的限制了线圈的散热能力。因此，有必要对现有的立体卷铁心敞开干式变压器线圈及其绕制方法进行改进和优化。
发明内容
为克服现有技术的不足，本发明提供一种采用正段和正、反段交替结构的新型立体卷铁心敞开干式变压器线圈结构，以优化结构、降低成本、提高生产率，拓宽线圈的使用范围；同时提供一种绕制该线圈结构的方法，以简化工艺，提高生产效率。
本发明解决其技术问题所采用的技术方案是：
一种立体卷铁心敞开干式变压器线圈结构，包括立体卷铁心、设置在立体卷铁心外的绝缘筒和绕制在绝缘筒上的线圈绕组，线圈绕组由绝缘导线绕制，所述绝缘筒外侧均匀的设置有梳形撑条，绝缘导线绕在梳形撑条的齿条之间，线圈绕组上接有线圈分接抽头，线圈分接抽头引出至线圈绕组表面，线圈绕组的首端和引出线圈分接抽头的部位绕制为正反段混合线圈，其余部位绕制为全正段线圈。
所述线圈绕组包括若干通过换位连线连接的线匝，每一线匝置于梳形撑条的两齿条之间，正反段混合线圈包括交替绕制的正段线匝和反段线匝，每一组正段线匝和反段线匝的换位连线位于正反段混合线圈表面；全正段线圈包括若干段正段线匝，相邻两正段线匝之间的换位连线从一匝表面连接至另一匝的内圈。
所述正段线匝垂直于绝缘筒从内向外连续绕制，反段线匝垂直于绝缘筒从内向外与正段线匝反方向连续绕制。
所述绝缘导线为根据实际需求设置的单股导线或多股并绕导线。
所述梳形撑条粘接在绝缘筒外侧，其齿条朝向外侧，所有梳形撑条的对应齿条置于同一高度。
所述梳形撑条采用绝缘材料制成。
一种立体卷铁心敞开干式变压器线圈绕制方法，在立体卷铁心外设置绝缘筒并在绝缘筒上用绝缘导线绕制线圈绕组，其特征在于，包括如下步骤：
a. 在绝缘筒外侧均匀的粘接梳形撑条，在梳形撑条的齿条之间用绝缘导线绕制线匝；
b. 线圈绕组从下往上绕制，先在梳形撑条最下层的两齿条之间绕制一匝反段线匝，使初始线头置于该反段线匝表面，然后依次向上方绕制包括若干匝正段线匝的全正段线圈；
c. 在需要引出线圈分接抽头的部位绕制正反段混合线圈，在正反段混合线圈的每一组正段线匝和反段线匝的换位连线处引出线圈分接抽头。
所述反段线匝绕制时先绕制一匝临时正段，然后将临时正段从外向内依次翻叠至指定的梳形撑条的齿条之间，并拉紧形成反段线匝。
在所述正反段混合线圈绕制完成后继续绕制全正段线圈，每一正段线匝从内到外依次绕制。
本发明的有益效果是：通过采用梳形撑条，将绝缘导线每匝直接绕在梳形撑条的齿条之间，取消了现有线圈使用的内径撑条和段间绝缘垫块，节约了大量垫块用材；且由于梳形撑条与绝缘导线的接触面积远小于传统结构中绝缘导线与垫块的接触面积，在相同线圈体积下，使线圈拥有了更大的表面散热面，极大的提高了线圈的散热能力；通过将线圈绕组绕制为包括全正段线圈和正反段混合线圈相结合的连续式线圈结构，保证线圈所有头、尾和分接抽头全部在线圈表面直接引出，避免了现有结构部分线圈分接抽头在线圈内部引出的工艺复杂性，提高了生产效率和变压器运行的安全性；此外，由于线圈的所有头、尾和分接抽头全部在线圈表面直接引出，可以有效的优化变压器线圈结构、降低制作难度和成本、提高变压器市场竞争力，使线圈的适用范围更广，能满足各种容量的变压器线圈结构的需要,特别是用于大电流产品时优势更加突出。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明的线圈绕制结构展开图；
图2是本发明中梳形撑条的侧视结构示意图。
具体实施方式
参照图1至2，本发明的一种立体卷铁心敞开干式变压器线圈结构，包括立体卷铁心、设置在立体卷铁心外的绝缘筒和绕制在绝缘筒上的线圈绕组，线圈绕组由绝缘导线1绕制，所述绝缘筒外侧均匀的设置有梳形撑条2，梳形撑条2粘接在绝缘筒外侧，其齿条21朝向外侧，所有梳形撑条2的对应齿条21置于同一高度，以便绝缘导线1从下至上一层一层的绕制成若干线匝，梳形撑条2采用绝缘材料制成，通过采用梳形撑条，将绝缘导线每匝直接绕在梳形撑条的齿条之间，取消了现有线圈使用的内径撑条和段间绝缘垫块，节约了大量垫块用材；且由于梳形撑条与绝缘导线的接触面积远小于传统结构中绝缘导线与垫块的接触面积，在相同线圈体积下，使线圈拥有了更大的表面散热面，极大的提高了线圈的散热能力。所述绝缘导线1为根据实际需求设置的单股导线或多股并绕导线，以适应不同电流大小的变压器需求。
绝缘导线1绕在梳形撑条2的齿条21之间，线圈绕组上接有线圈分接抽头11，线圈分接抽头11引出至线圈绕组表面，线圈绕组的首端和引出线圈分接抽头11的部位绕制为正反段混合线圈12，其余部位绕制为全正段线圈13。通过将线圈绕组绕制为包括全正段线圈和正反段混合线圈相结合的连续式线圈结构，保证线圈所有头、尾和分接抽头全部在线圈表面直接引出，避免了现有结构部分线圈分接抽头在线圈内部引出的工艺复杂性，提高了生产效率和变压器运行的安全性；此外，由于线圈的所有头、尾和分接抽头全部在线圈表面直接引出，可以有效的优化变压器线圈结构、降低制作难度和成本、提高变压器市场竞争力，使线圈的适用范围更广，能满足各种容量的变压器线圈结构的需要,特别是用于大电流产品时优势更加突出。
线圈绕组包括若干通过换位连线14连接的线匝，每一线匝置于梳形撑条2的两齿条21之间，正反段混合线圈12包括交替绕制的正段线匝和反段线匝，每一组正段线匝和反段线匝的换位连线14位于正反段混合线圈12表面，该换位连线14处引出线圈分接抽头11；全正段线圈13包括若干段正段线匝，相邻两正段线匝之间的换位连线14从一匝表面连接至另一匝的内圈。正段线匝垂直于绝缘筒从内向外连续绕制，反段线匝垂直于绝缘筒从内向外与正段线匝反方向连续绕制。由于线圈分接抽头全部在线圈表面直接引出，操作工艺大为简化，避免了现有结构部分线圈分接抽头需要在线圈内部引出所带来的的安全隐患和工艺复杂性。
本发明线圈的绕制过程如下：，
先在立体卷铁心外设置绝缘筒，并在绝缘筒外侧均匀的粘接梳形撑条2，在梳形撑条2的齿条21之间用绝缘导线1绕制线匝组成线圈绕组。
线圈绕组从下往上绕制，先在梳形撑条2最下层的两齿条21之间绕制一匝反段线匝，使初始线头置于该反段线匝表面，反段线匝绕制时先绕制一匝临时正段，然后将临时正段从外向内依次翻叠至指定的梳形撑条2的齿条21之间，并拉紧形成反段线匝。
最下层的反段线匝绕制完成后依次向上方绕制包括若干匝正段线匝的全正段线圈13，每一正段线匝从内到外依次绕制，相邻两正段线匝的换位连线14从下方一咋的外圈连接至上方一匝的内圈。
全正段线圈13绕制到需要引出线圈分接抽头11的部位时，开始绕制正反段混合线圈12，正反段混合线圈12的正段线匝和反段线匝的组数根据需要引出的线圈分接抽头的数量确定，每一组正段线匝和反段线匝中正段线匝位于下方，反段线匝位于上方，其换位连线14置于线圈外侧，在该换位连线14处引出线圈分接抽头11。
在正反段混合线圈12绕制完成后继续绕制全正段线圈13，直至线圈绕组绕制完成，最上方一匝的线匝为正段线匝，绝缘导线的线头依然置于线圈外侧。
以上所述，只是本发明的较佳实施方式，但本发明并不限于上述实施例，只要其以任何相同或相似手段达到本发明的技术效果，都应包含在本发明的保护范围之内。

Claims (9)

  1. 一种立体卷铁心敞开干式变压器线圈结构，包括立体卷铁心、设置在立体卷铁心外的绝缘筒和绕制在绝缘筒上的线圈绕组，线圈绕组由绝缘导线（1）绕制，其特征在于：所述绝缘筒外侧均匀的设置有梳形撑条（2），绝缘导线（1）绕在梳形撑条（2）的齿条（21）之间，线圈绕组上接有线圈分接抽头（11），线圈分接抽头（11）引出至线圈绕组表面，线圈绕组的首端和引出线圈分接抽头（11）的部位绕制为正反段混合线圈（12），其余部位绕制为全正段线圈（13）。
  2. 根据权利要求1所述的一种立体卷铁心敞开干式变压器线圈结构，其特征在于：所述线圈绕组包括若干通过换位连线（14）连接的线匝，每一线匝置于梳形撑条（2）的两齿条（21）之间，正反段混合线圈（12）包括交替绕制的正段线匝和反段线匝，每一组正段线匝和反段线匝的换位连线（14）位于正反段混合线圈（12）表面；全正段线圈（13）包括若干段正段线匝，相邻两正段线匝之间的换位连线（14）从一匝表面连接至另一匝的内圈。
  3. 根据权利要求2所述的一种立体卷铁心敞开干式变压器线圈结构，其特征在于：所述正段线匝垂直于绝缘筒从内向外连续绕制，反段线匝垂直于绝缘筒从内向外与正段线匝反方向连续绕制。
  4. 根据权利要求1～3任一所述的一种立体卷铁心敞开干式变压器线圈结构，其特征在于：所述绝缘导线（1）为根据实际需求设置的单股导线或多股并绕导线。
  5. 根据权利要求1所述的一种立体卷铁心敞开干式变压器线圈结构，其特征在于：所述梳形撑条（2）粘接在绝缘筒外侧，其齿条（21）朝向外侧，所有梳形撑条（2）的对应齿条（21）置于同一高度。
  6. 根据权利要求5所述的一种立体卷铁心敞开干式变压器线圈结构，其特征在于：所述梳形撑条（2）采用绝缘材料制成。
  7. 一种立体卷铁心敞开干式变压器线圈绕制方法，在立体卷铁心外设置绝缘筒并在绝缘筒上用绝缘导线（1）绕制线圈绕组，其特征在于，包括如下步骤：
    a. 在绝缘筒外侧均匀的粘接梳形撑条（2），在梳形撑条（2）的齿条（21）之间用绝缘导线（1）绕制线匝；
    b. 线圈绕组从下往上绕制，先在梳形撑条（2）最下层的两齿条（21）之间绕制一匝反段线匝，使初始线头置于该反段线匝表面，然后依次向上方绕制包括若干匝正段线匝的全正段线圈（13）；
    c. 在需要引出线圈分接抽头（11）的部位绕制正反段混合线圈（12），在正反段混合线圈（12）的每一组正段线匝和反段线匝的换位连线（14）处引出线圈分接抽头（11）。
  8. 根据权利要求7所述的一种立体卷铁心敞开干式变压器线圈绕制方法，其特征在于：所述反段线匝绕制时先绕制一匝临时正段，然后将临时正段从外向内依次翻叠至指定的梳形撑条（2）的齿条（21）之间，并拉紧形成反段线匝。
  9. 根据权利要求8所述的一种立体卷铁心敞开干式变压器线圈绕制方法，其特征在于：在所述正反段混合线圈（12）绕制完成后继续绕制全正段线圈（13），每一正段线匝从内到外依次绕制。
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