WO2018176528A1 - 干式变压器线圈及其绕制方法 - Google Patents

干式变压器线圈及其绕制方法 Download PDF

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Publication number
WO2018176528A1
WO2018176528A1 PCT/CN2017/081164 CN2017081164W WO2018176528A1 WO 2018176528 A1 WO2018176528 A1 WO 2018176528A1 CN 2017081164 W CN2017081164 W CN 2017081164W WO 2018176528 A1 WO2018176528 A1 WO 2018176528A1
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Prior art keywords
coil
cake
inner layer
dry
block
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PCT/CN2017/081164
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English (en)
French (fr)
Inventor
许凯旋
戚宇祥
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广东敞开电气有限公司
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Priority to US15/756,887 priority Critical patent/US20190057804A1/en
Publication of WO2018176528A1 publication Critical patent/WO2018176528A1/zh

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    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air
    • 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
    • H01F27/2871—Pancake coils
    • 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
    • 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
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • 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
    • H01F27/323—Insulation between winding turns, between winding layers
    • 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
    • H01F27/325—Coil bobbins
    • 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
    • H01F41/061—Winding flat conductive wires or sheets
    • 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
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • 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
    • H01F41/12—Insulating of windings
    • H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil

Definitions

  • the present invention relates to the field of transformer technology, and in particular to a dry transformer coil and a winding method thereof.
  • a dry type transformer is a transformer in which the core and the coil are not immersed in the insulating oil.
  • dry-type transformers have been widely used in different places due to their low noise, easy installation, low loss, and safe operation.
  • the coil of the dry-type transformer coil generates a certain amount of heat during operation. If the heat cannot be lost in time, the operational reliability of the dry-type transformer coil will be affected, and the service life will be greatly reduced. Therefore, the coil must be well cooled.
  • the present invention overcomes the defects of the prior art, and provides a dry type transformer coil and a winding method thereof, which can effectively improve the heat dissipation capability and is safe and reliable in operation.
  • a dry-type transformer coil comprising an inner cylinder and at least two cake-type coils, at least two cakes, wherein the cake-type coils are sequentially arranged outside the inner cylinder along an axial direction of the inner cylinder, the cake coil comprising An inner layer coil and an outer layer coil, the inner layer coil and the outer layer coil are spaced apart to form a first air passage, and the first air passage is provided for spacing the inner layer coil and the outer layer coil a first partition block, the adjacent two cakes are spaced apart from each other to form a second air passage, and the second air passage is provided with an inner layer coil for spacing the adjacent two cakes of the cake coil a second partition block and a third partition block for spacing the outer coils of the adjacent two-cake pie coil.
  • the inner coil and the outer coil of the pie coil are separated by a first partition to form a first air passage.
  • the inner coils of the adjacent two pie-shaped coils are separated by a second dividing block, and the outer coils of the adjacent two-cake coils are separated by a third dividing block to form a second air passage.
  • the first air passage cooperates with the second air passage, so that the heat generated by the cake coil during operation can be effectively and quickly dissipated, thereby improving the operational reliability of the dry-type transformer coil and increasing the dry-type transformer coil.
  • the dry-type transformer coil can effectively improve the heat dissipation capability and is safe and reliable in operation.
  • the second partition block and the third partition block are integrally formed.
  • the second partition block is integrally formed with the third partition block, and the arrangement of the second partition block and the third partition block can be completed at the same time, the installation is more convenient, and the structure is more compact.
  • the first partitioning blocks are at least two, at least two of the first partitioning blocks are evenly spaced along the circumferential direction of the inner cylinder, and the second partitioning blocks are at least two. At least two of the second partition blocks are evenly spaced along the circumferential direction of the inner cylinder, the third partition block is at least two, and at least two of the third partition blocks are evenly distributed along the circumference of the inner cylinder Interval setting. In this way, the winding uniformity of the cake coil can be improved, the cake coil winding is convenient, and the winding quality is good.
  • the inner cylinder, the first partition block, the second partition block, and the third partition block are all made of an insulating material, which is advantageous for improving the insulation performance of the dry-type transformer coil and has high operational reliability.
  • the inner layer coil is spaced apart from the inner cylinder to form a third air passage, and the third air passage is provided with a fourth portion for spacing the inner layer coil and the inner cylinder. Separate blocks. The inner layer coil of the pie coil and the inner cylinder are separated by a fourth partition to form a third air passage, thereby achieving further improvement in heat dissipation capability.
  • the fourth partitioning block is at least two, and at least two of the fourth partitioning blocks are evenly spaced along the circumferential direction of the inner cylinder. In this way, the winding uniformity of the cake coil can be improved, the cake coil winding is convenient, and the winding quality is good.
  • the fourth partition block is made of an insulating material, which is advantageous for improving the insulation performance of the dry-type transformer coil and has high operational reliability.
  • the dry-type transformer coil further includes an outer cylinder that is sleeved outside the cake coil to protect the pie coil, thereby improving the operational reliability of the dry-type transformer coil and Increase the service life of dry-type transformer coils.
  • the outer cylinder is made of an insulating material, which is advantageous for improving the insulation performance of the dry-type transformer coil and has high operational reliability.
  • the invention also provides a method for winding a dry transformer coil, comprising the following steps:
  • a second partition block for spacing the inner layer coil of the previous pie-cake coil and the inner layer coil of the latter pie-type coil is provided at the end of the inner layer coil of the previous pie-cake coil,
  • the end of the outer coil of the former cake coil is provided with a third partition for separating the outer coil of the previous pie coil and the outer coil of the latter pie coil, and is wound around the inner cylinder
  • the inner layer coil of the cake core coil is formed, and the inner layer coil for separating the latter cake coil and the latter cake coil are disposed on the side of the inner layer coil of the latter cake coil.
  • the inner layer coil and the outer layer coil of the cake coil are separated by a first partition block to form a first air passage.
  • the inner coils of the adjacent two pie-shaped coils are separated by a second dividing block, and the outer coils of the adjacent two-cake coils are separated by a third dividing block to form a second air passage.
  • the first air passage cooperates with the second air passage, so that the heat generated by the cake coil during operation can be effectively and quickly dissipated, thereby improving the operational reliability of the dry-type transformer coil and increasing the service life of the dry-type transformer coil.
  • the dry-type transformer coil winding method can effectively improve the heat dissipation capability and is safe and reliable in operation.
  • FIG. 1 is a schematic structural view of a dry-type transformer coil according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing a dry type transformer coil according to an embodiment of the present invention.
  • the dry-type transformer coil of the embodiment includes an inner cylinder 100 and at least two cake-cake coils 200. At least two cakes of the cake coil 200 are sequentially wound around the inner cylinder 100 in the axial direction of the inner cylinder 100.
  • the cake coil 200 includes an inner layer coil 210 and an outer layer coil 220.
  • the inner layer coil 210 is spaced apart from the outer layer coil 220 to form a first air passage 700.
  • the first air passage 700 is provided with a first portion for spacing the inner layer coil 210 and the outer layer coil 220.
  • a partition block 300 The two cakes of the adjacent cakes are spaced apart to form a second air passage 800, and the second air passage 800 is provided with an inner layer coil 210 for spacing the adjacent two cakes of the cake coil 200.
  • a second spacer block 400 and a third spacer block 500 for spacing the outer coils 220 of the adjacent pie cakes 200.
  • the dry type transformer coil, the inner layer coil 210 of the pie coil 200 and the outer layer coil 220 are separated by the first partition block 300 to form the first air passage 700.
  • Adjacent two cake-cake coils 200 The layer coils 210 are separated by a second spacer block 400, and the outer layer coils 220 of adjacent piecake coils 200 are separated by a third spacer block 500 to form a second air passage 800.
  • the first air passage 700 cooperates with the second air passage 800, so that the heat generated by the cake coil 200 during operation can be effectively and quickly dissipated, thereby improving the operational reliability of the dry-type transformer coil and increasing the service life of the dry-type transformer coil. .
  • the dry-type transformer coil can effectively improve the heat dissipation capability and is safe and reliable in operation.
  • the size of the second air passage 800 can be appropriately reduced when designing the dry-type transformer coil, so that the dry type The overall height of the transformer coil is reduced to save material.
  • the second partition block 400 and the third partition block 500 are integrally formed.
  • the second partition block 400 is integrally formed with the third partition block 500.
  • the arrangement of the second partition block 400 and the third partition block 500 can be completed at the same time, and the installation is more convenient and the structure is more compact.
  • the inner layer coil 210 is spaced apart from the inner cylinder 100 to form a third air passage 900.
  • the third air passage 900 is disposed to partition the inner layer coil 210 and the inner portion.
  • the fourth dividing block 600 of the canister 100 The inner layer coil 210 of the cake coil 200 is separated from the inner cylinder 100 by the fourth partition block 600 to form a third air passage 900, thereby achieving further improvement in heat dissipation capability.
  • the first partitioning block 300 is at least two, and at least two of the first partitioning blocks 300 are evenly spaced along the circumferential direction of the inner cylinder 100.
  • the second partitioning block 400 is at least two, and at least two of the second partitioning blocks 400 are evenly spaced along the circumferential direction of the inner cylinder 100.
  • the third partition block 500 is at least two, and at least two of the third partition blocks 500 are evenly spaced along the circumferential direction of the inner cylinder 100. In this way, the winding uniformity of the cake coil 200 can be improved, the cake coil 200 can be easily wound, and the winding quality is good.
  • first partition block 300 two sides of the first partition block 300 respectively abut on the inner layer coil 210 and the outer layer coil 220. Both ends of the second partition block 400 abut on the inner layer coil 210 of the adjacent pie cake coil 200. Both ends of the third partition block 500 abut on the outer coil 220 of the adjacent pie cake coil 200.
  • the first partition block 300, the second partition block 400, and the third partition block 500 are convenient to assemble and disassemble, and the partitioning effect is good.
  • first partition block 300 in each first air passage 700 is eight
  • second partition block 400 in each second air passage 800 is eight, each in the second air passage 800.
  • Third partition 500 is eight, and the first partition block 300, the second partition block 400, and the third partition block 500 are arranged one by one. In this way, the first air passage 700 and the second air passage 800 are divided into eight equal parts, the electric field distribution is uniform, and the stability of the dry type transformer coil is improved.
  • the fourth partitioning block 600 is at least two, and at least two of the fourth partitioning blocks 600 are evenly spaced along the circumferential direction of the inner cylinder 100. In this way, the winding uniformity of the cake coil 200 can be improved, the cake coil 200 can be easily wound, and the winding quality is good.
  • the fourth partition block 600 in the third air passage 900 is eight.
  • the fourth partition block 600 is convenient for assembly and disassembly, and has a good separation effect.
  • the inner cylinder 100, the first partitioning block 300, the second partitioning block 400, the third partitioning block 500, and the fourth partitioning block 600 are all made of an insulating material, which is beneficial to improving the insulation performance of the dry-type transformer coil. High operational reliability.
  • the dry-type transformer coil of the embodiment further includes an outer cylinder (not shown), and the outer cylinder is sleeved outside the cake coil 200 to protect the cake coil 200, thereby improving the dry-type transformer coil. Operational reliability and increased service life of dry-type transformer coils.
  • the outer cylinder is made of an insulating material, which is beneficial to improving the insulation performance of the dry-type transformer coil and has high operational reliability.
  • the embodiment further provides a dry-type transformer coil winding method, which includes the following steps:
  • the inner layer coil 210 of the first cake-type coil 200 is wound on the inner cylinder 100, and the first cake-shaped coil is disposed at the side of the inner layer coil 210 of the first cake-type coil 200.
  • the inner layer coil 210 of 200 and the first partition block 300 of the outer layer coil 220 of the first cake coil 200, the outer layer coil 220 of the first cake coil 200 is wound on the first partition block 300, first
  • the inner layer coil 210 of the pie cake coil 200 and the outer layer coil 220 of the first cake coil 200 form a first air passage 700;
  • An inner layer coil 210 for separating the inner layer coil 210 of the first wafer coil 200 and the inner layer coil 210 of the second wafer coil 200 is disposed at an end of the inner layer coil 210 of the first cake coil 200.
  • the second partition block 400 is provided at an end of the outer coil 220 of the first cake coil 200 for separating the outer layer coil 220 of the first cake coil 200 and the outer layer of the second cake coil 200.
  • the third partition block 500 of the coil 220 winds the inner layer coil 210 of the second cake coil 200 on the inner cylinder 100.
  • the side of the inner layer coil 210 of the two-cake coil 200 is provided with a first partition 300 for separating the inner coil 210 of the second wafer coil 200 and the outer coil 220 of the second wafer coil 200.
  • the outer coil 220 of the second cake coil 200 is wound on the first partition block 300, and the inner coil 210 of the second cake coil 200 and the outer coil 220 of the second cake coil 200 form the first An air passage 700, an inner layer coil 210 of the first cake coil 200 and an inner layer coil 210 of the second cake coil 200, and an outer layer coil 220 and a second cake coil of the first cake coil 200
  • the outer coil 220 of 200 forms a second air passage 800;
  • an inner layer coil 210 for separating the second cake coil 200 and an inner layer coil 210 of the third cake coil 200 are disposed.
  • the second partition block 400 is provided at an end of the outer coil 220 of the second cake coil 200 for separating the outer layer 220 of the second cake coil 200 and the outer layer of the third cake coil 200.
  • the third partition block 500 of the coil 220, the inner layer coil 210 of the third cake coil 200 is wound on the inner cylinder 100, and is disposed at the side of the inner layer coil 210 of the third cake coil 200 for separation.
  • the inner layer coil 210 of the third cake coil 200 and the first partition block 300 of the outer layer coil 220 of the third cake coil 200 are wound on the first partition block 300 outside the third cake coil 200.
  • the layer coil 220, the inner layer coil 210 of the third cake coil 200 and the outer layer coil 220 of the third cake coil 200 form a first air passage 700, and the inner layer coil 210 of the second cake coil 200
  • the inner layer coil 210 of the three-cake coil 200 and the outer coil 220 of the second wafer coil 200 and the outer coil 220 of the third wafer coil 200 form a second air passage 8 00;
  • the last pie-type coil 200 is the twelfth pie-shaped coil 200.
  • the inner layer coil 210 of the cake coil 200 and the outer layer coil 220 are separated by the first partition block 300 to form the first air passage 700.
  • the inner layer coils 210 of the adjacent two cake-cake coils 200 are separated by a second partition block 400, and the outer layer coils 220 of the adjacent two cake-cake coils 200 are separated by a third partition block 500 to form a second Airway 800.
  • the first air passage 700 cooperates with the second air passage 800, so that the heat generated by the cake coil 200 during operation can be effectively and quickly dissipated, thereby improving the operational reliability of the dry-type transformer coil and increasing the service life of the dry-type transformer coil.
  • the dry-type transformer coil winding method can effectively improve the heat dissipation capability, and the operation safety All reliable.

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  • Manufacturing & Machinery (AREA)
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Abstract

一种干式变压器线圈及其绕制方法，所述干式变压器线圈包括内筒（100）及至少两饼饼式线圈（200），至少两饼所述饼式线圈（200）沿所述内筒（100）的轴向依次绕设在所述内筒（100）外，所述饼式线圈（200）包括内层线圈（210）及外层线圈（220），所述内层线圈（210）与所述外层线圈（220）间隔设置形成第一气道（700），所述第一气道（700）内设有用于隔开所述内层线圈（210）与所述外层线圈（220）的第一分隔块（300），相邻的两饼所述饼式线圈（200）间隔设置形成第二气道（800），所述第二气道（800）内设有用于隔开相邻的两饼所述饼式线圈（200）的内层线圈（210）的第二分隔块（400）及用于隔开相邻的两饼所述饼式线圈（200）的外层线圈（220）的第三分隔块（500）。该干式变压器线圈及其绕制方法，能够有效地提高散热能力，运行安全可靠。

Description

干式变压器线圈及其绕制方法 技术领域
本发明涉及变压器技术领域，特别是涉及一种干式变压器线圈及其绕制方法。
背景技术
干式变压器是指铁心和线圈不浸渍在绝缘油中的变压器。近年来，干式变压器由于具有噪声小、易安装、损耗低、运行安全的特点，被广泛应用在不同的场所中。干式变压器线圈的线圈在工作时会产生一定的热量，若热量不能及时散失，干式变压器线圈的运行可靠性会受到影响，使用寿命也会大大减少，因此必须保证线圈良好的散热。
发明内容
基于此，本发明在于克服现有技术的缺陷，提供一种干式变压器线圈及其绕制方法，能够有效地提高散热能力，运行安全可靠。
一种干式变压器线圈，包括内筒及至少两饼饼式线圈，至少两饼所述饼式线圈沿所述内筒的轴向依次绕设在所述内筒外，所述饼式线圈包括内层线圈及外层线圈，所述内层线圈与所述外层线圈间隔设置形成第一气道，所述第一气道内设有用于隔开所述内层线圈与所述外层线圈的第一分隔块，相邻的两饼所述饼式线圈间隔设置形成第二气道，所述第二气道内设有用于隔开相邻的两饼所述饼式线圈的内层线圈的第二分隔块及用于隔开相邻的两饼所述饼式线圈的外层线圈的第三分隔块。
上述干式变压器线圈，饼式线圈的内层线圈与外层线圈通过第一分隔块隔开，以形成第一气道。相邻的两饼饼式线圈的内层线圈通过第二分隔块隔开，相邻的两饼饼式线圈的外层线圈通过第三分隔块隔开，以形成第二气道。第一气道与第二气道协同作用，使得饼式线圈在工作时产生的热量能够有效迅速地散失，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈 的使用寿命。该干式变压器线圈，能够有效地提高散热能力，运行安全可靠。
在其中一个实施例中，所述第二分隔块与所述第三分隔块为一体成型结构。第二分隔块与第三分隔块一体成型，第二分隔块与第三分隔块的设置就可以同时完成，安装更方便，结构更紧凑。
在其中一个实施例中，所述第一分隔块为至少两个，至少两个所述第一分隔块沿所述内筒的周向均匀间隔设置，所述第二分隔块为至少两个，至少两个所述第二分隔块沿所述内筒的周向均匀间隔设置，所述第三分隔块为至少两个，至少两个所述第三分隔块沿所述内筒的周向均匀间隔设置。如此，能够提高饼式线圈的绕设均匀性，饼式线圈绕设方便，且绕制质量好。
在其中一个实施例中，所述内筒、第一分隔块、第二分隔块、第三分隔块均由绝缘材料制成，有利于提高干式变压器线圈的绝缘性能，运行可靠性高。
在其中一个实施例中，所述内层线圈与所述内筒间隔设置形成第三气道，所述第三气道内设有用于隔开所述内层线圈与所述内筒的第四分隔块。饼式线圈的内层线圈与内筒通过第四分隔块隔开，以形成第三气道，从而实现散热能力的进一步提高。
在其中一个实施例中，所述第四分隔块为至少两个，至少两个所述第四分隔块沿所述内筒的周向均匀间隔设置。如此，能够提高饼式线圈的绕设均匀性，饼式线圈绕设方便，且绕制质量好。
在其中一个实施例中，所述第四分隔块由绝缘材料制成，有利于提高干式变压器线圈的绝缘性能，运行可靠性高。
在其中一个实施例中，所述干式变压器线圈还包括外筒，所述外筒套设在饼式线圈外，对饼式线圈起到保护作用，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈的使用寿命。
在其中一个实施例中，所述外筒由绝缘材料制成，有利于提高干式变压器线圈的绝缘性能，运行可靠性高。
本发明还提供一种干式变压器线圈绕制方法，包括以下步骤：
(1)在内筒上绕制前一饼饼式线圈的内层线圈，在前一饼饼式线圈的内 层线圈的侧部设置用于隔开前一饼饼式线圈的内层线圈与前一饼饼式线圈的外层线圈的第一分隔块，在第一分隔块上绕制前一饼饼式线圈的外层线圈，前一饼饼式线圈的内层线圈与前一饼饼式线圈的外层线圈形成第一气道；
(2)在前一饼饼式线圈的内层线圈的端部设置用于隔开前一饼饼式线圈的内层线圈与后一饼饼式线圈的内层线圈的第二分隔块，在前一饼饼式线圈的外层线圈的端部设置用于隔开前一饼饼式线圈的外层线圈与后一饼饼式线圈的外层线圈的第三分隔块，在内筒上绕制后一饼饼式线圈的内层线圈，在后一饼饼式线圈的内层线圈的侧部设置用于隔开后一饼饼式线圈的内层线圈与后一饼饼式线圈的外层线圈的第一分隔块，在第一分隔块上绕制后一饼饼式线圈的外层线圈，后一饼饼式线圈的内层线圈与后一饼饼式线圈的外层线圈形成第一气道，前一饼饼式线圈的内层线圈与后一饼饼式线圈的内层线圈及前一饼饼式线圈的外层线圈与后一饼饼式线圈的外层线圈形成第二气道；
重复上述步骤(2)直至完成最后一饼饼式线圈的绕制。
上述干式变压器线圈绕制方法，饼式线圈的内层线圈与外层线圈通过第一分隔块隔开，以形成第一气道。相邻的两饼饼式线圈的内层线圈通过第二分隔块隔开，相邻的两饼饼式线圈的外层线圈通过第三分隔块隔开，以形成第二气道。第一气道与第二气道协同作用，使得饼式线圈在工作时产生的热量能够有效迅速地散失，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈的使用寿命。该干式变压器线圈绕制方法，能够有效地提高散热能力，运行安全可靠。
附图说明
图1为本发明实施例所述的干式变压器线圈的结构示意图；
图2为本发明实施例所述的干式变压器线圈的剖视示意图。
附图标记说明：
100、内筒，200、饼式线圈，210、内层线圈，220、外层线圈，300、第一分隔块，400、第二分隔块，500、第三分隔块，600、第四分隔块，700、第一气道，800、第二气道，900、第三气道。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。相反，当元件被称作“直接在”另一元件“上”时，不存在中间元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
结合图1-2所示，本实施例所述的干式变压器线圈，包括内筒100及至少两饼饼式线圈200。至少两饼所述饼式线圈200沿所述内筒100的轴向依次绕设在所述内筒100外。所述饼式线圈200包括内层线圈210及外层线圈220。所述内层线圈210与所述外层线圈220间隔设置形成第一气道700，所述第一气道700内设有用于隔开所述内层线圈210与所述外层线圈220的第一分隔块300。相邻的两饼所述饼式线圈200间隔设置形成第二气道800，所述第二气道800内设有用于隔开相邻的两饼所述饼式线圈200的内层线圈210的第二分隔块400及用于隔开相邻的两饼所述饼式线圈200的外层线圈220的第三分隔块500。
上述干式变压器线圈，饼式线圈200的内层线圈210与外层线圈220通过第一分隔块300隔开，以形成第一气道700。相邻的两饼饼式线圈200的内 层线圈210通过第二分隔块400隔开，相邻的两饼饼式线圈200的外层线圈220通过第三分隔块500隔开，以形成第二气道800。第一气道700与第二气道800协同作用，使得饼式线圈200在工作时产生的热量能够有效迅速地散失，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈的使用寿命。该干式变压器线圈，能够有效地提高散热能力，运行安全可靠。
另外，由于干式变压器线圈的第一气道700与第二气道800协同作用能够基本满足散热需求，在设计干式变压器线圈时可以适当地减小第二气道800的尺寸，使得干式变压器线圈的整体高度降低，达到节省材料的目的。
其中，所述第二分隔块400与所述第三分隔块500为一体成型结构。第二分隔块400与第三分隔块500一体成型，第二分隔块400与第三分隔块500的设置就可以同时完成，安装更方便，结构更紧凑。
在本实施例中，所述内层线圈210与所述内筒100间隔设置形成第三气道900，所述第三气道900内设有用于隔开所述内层线圈210与所述内筒100的第四分隔块600。饼式线圈200的内层线圈210与内筒100通过第四分隔块600隔开，以形成第三气道900，从而实现散热能力的进一步提高。
优选地，所述第一分隔块300为至少两个，至少两个所述第一分隔块300沿所述内筒100的周向均匀间隔设置。所述第二分隔块400为至少两个，至少两个所述第二分隔块400沿所述内筒100的周向均匀间隔设置。所述第三分隔块500为至少两个，至少两个所述第三分隔块500沿所述内筒100的周向均匀间隔设置。如此，能够提高饼式线圈200的绕设均匀性，饼式线圈200绕设方便，且绕制质量好。
具体地，所述第一分隔块300的两侧分别抵接在所述内层线圈210与所述外层线圈220上。所述第二分隔块400的两端分别抵接在相邻的两饼所述饼式线圈200的内层线圈210上。所述第三分隔块500的两端分别抵接在相邻的两饼所述饼式线圈200的外层线圈220上。第一分隔块300、第二分隔块400、第三分隔块500装拆更换方便，且分隔效果好。
在本实施例中，每个第一气道700内的第一分隔块300为八个，每个第二气道800内的第二分隔块400为八个，每个第二气道800内的第三分隔块 500为八个，且第一分隔块300、第二分隔块400、第三分隔块500三者一一对应设置。如此，将第一气道700、第二气道800分为八等份，电场分布均匀，干式变压器线圈的稳定性提高。
优选地，所述第四分隔块600为至少两个，至少两个所述第四分隔块600沿所述内筒100的周向均匀间隔设置。如此，能够提高饼式线圈200的绕设均匀性，饼式线圈200绕设方便，且绕制质量好。在本实施例中，所述第三气道900内的第四分隔块600为八个。
具体地，所述第四分隔块600的两侧分别抵接在所述内层线圈210与所述内筒100上。第四分隔块600装拆更换方便，且分隔效果好。
进一步地，所述内筒100、第一分隔块300、第二分隔块400、第三分隔块500、第四分隔块600均由绝缘材料制成，有利于提高干式变压器线圈的绝缘性能，运行可靠性高。
本实施例所述的干式变压器线圈还包括外筒(未画出)，所述外筒套设在饼式线圈200外，对饼式线圈200起到保护作用，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈的使用寿命。所述外筒由绝缘材料制成，有利于提高干式变压器线圈的绝缘性能，运行可靠性高。
结合图1-2所示，本实施例还提供一种干式变压器线圈绕制方法，包括以下步骤：
(1)在内筒100上绕制第一饼饼式线圈200的内层线圈210，在第一饼饼式线圈200的内层线圈210的侧部设置用于隔开第一饼饼式线圈200的内层线圈210与第一饼饼式线圈200的外层线圈220的第一分隔块300，在第一分隔块300上绕制第一饼饼式线圈200的外层线圈220，第一饼饼式线圈200的内层线圈210与第一饼饼式线圈200的外层线圈220形成第一气道700；
(2)在第一饼饼式线圈200的内层线圈210的端部设置用于隔开第一饼饼式线圈200的内层线圈210与第二饼饼式线圈200的内层线圈210的第二分隔块400，在第一饼饼式线圈200的外层线圈220的端部设置用于隔开第一饼饼式线圈200的外层线圈220与第二饼饼式线圈200的外层线圈220的第三分隔块500，在内筒100上绕制第二饼饼式线圈200的内层线圈210，在第 二饼饼式线圈200的内层线圈210的侧部设置用于隔开第二饼饼式线圈200的内层线圈210与第二饼饼式线圈200的外层线圈220的第一分隔块300，在第一分隔块300上绕制第二饼饼式线圈200的外层线圈220，第二饼饼式线圈200的内层线圈210与第二饼饼式线圈200的外层线圈220形成第一气道700，第一饼饼式线圈200的内层线圈210与第二饼饼式线圈200的内层线圈210及第一饼饼式线圈200的外层线圈220与第二饼饼式线圈200的外层线圈220形成第二气道800；
(3)在第二饼饼式线圈200的内层线圈210的端部设置用于隔开第二饼饼式线圈200的内层线圈210与第三饼饼式线圈200的内层线圈210的第二分隔块400，在第二饼饼式线圈200的外层线圈220的端部设置用于隔开第二饼饼式线圈200的外层线圈220与第三饼饼式线圈200的外层线圈220的第三分隔块500，在内筒100上绕制第三饼饼式线圈200的内层线圈210，在第三饼饼式线圈200的内层线圈210的侧部设置用于隔开第三饼饼式线圈200的内层线圈210与第三饼饼式线圈200的外层线圈220的第一分隔块300，在第一分隔块300上绕制第三饼饼式线圈200的外层线圈220，第三饼饼式线圈200的内层线圈210与第三饼饼式线圈200的外层线圈220形成第一气道700，第二饼饼式线圈200的内层线圈210与第三饼饼式线圈200的内层线圈210及第二饼饼式线圈200的外层线圈220与第三饼饼式线圈200的外层线圈220形成第二气道800；
(4)如此类推直至完成最后一饼饼式线圈200的绕制。在本实施例中，最后一饼饼式线圈200为第十二饼饼式线圈200。
上述干式变压器线圈绕制方法，饼式线圈200的内层线圈210与外层线圈220通过第一分隔块300隔开，以形成第一气道700。相邻的两饼饼式线圈200的内层线圈210通过第二分隔块400隔开，相邻的两饼饼式线圈200的外层线圈220通过第三分隔块500隔开，以形成第二气道800。第一气道700与第二气道800协同作用，使得饼式线圈200在工作时产生的热量能够有效迅速地散失，从而提高干式变压器线圈的运行可靠性和增加干式变压器线圈的使用寿命。该干式变压器线圈绕制方法，能够有效地提高散热能力，运行安 全可靠。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种干式变压器线圈，其特征在于，包括内筒及至少两饼饼式线圈，至少两饼所述饼式线圈沿所述内筒的轴向依次绕设在所述内筒外，所述饼式线圈包括内层线圈及外层线圈，所述内层线圈与所述外层线圈间隔设置形成第一气道，所述第一气道内设有用于隔开所述内层线圈与所述外层线圈的第一分隔块，相邻的两饼所述饼式线圈间隔设置形成第二气道，所述第二气道内设有用于隔开相邻的两饼所述饼式线圈的内层线圈的第二分隔块及用于隔开相邻的两饼所述饼式线圈的外层线圈的第三分隔块。
  2. 根据权利要求1所述的干式变压器线圈，其特征在于，所述第二分隔块与所述第三分隔块为一体成型结构。
  3. 根据权利要求1所述的干式变压器线圈，其特征在于，所述第一分隔块为至少两个，至少两个所述第一分隔块沿所述内筒的周向均匀间隔设置，所述第二分隔块为至少两个，至少两个所述第二分隔块沿所述内筒的周向均匀间隔设置，所述第三分隔块为至少两个，至少两个所述第三分隔块沿所述内筒的周向均匀间隔设置。
  4. 根据权利要求1所述的干式变压器线圈，其特征在于，所述内筒、第一分隔块、第二分隔块、第三分隔块均由绝缘材料制成。
  5. 根据权利要求1所述的干式变压器线圈，其特征在于，所述内层线圈与所述内筒间隔设置形成第三气道，所述第三气道内设有用于隔开所述内层线圈与所述内筒的第四分隔块。
  6. 根据权利要求5所述的干式变压器线圈，其特征在于，所述第四分隔块为至少两个，至少两个所述第四分隔块沿所述内筒的周向均匀间隔设置。
  7. 根据权利要求5所述的干式变压器线圈，其特征在于，所述第四分隔块由绝缘材料制成。
  8. 根据权利要求1-7任一项所述的干式变压器线圈，其特征在于，还包括外筒，所述外筒套设在饼式线圈外。
  9. 根据权利要求8所述的干式变压器线圈，其特征在于，所述外筒由绝缘材料制成。
  10. 一种干式变压器线圈绕制方法，其特征在于，包括以下步骤：
    (1)在内筒上绕制前一饼饼式线圈的内层线圈，在前一饼饼式线圈的内层线圈的侧部设置用于隔开前一饼饼式线圈的内层线圈与前一饼饼式线圈的外层线圈的第一分隔块，在第一分隔块上绕制前一饼饼式线圈的外层线圈，前一饼饼式线圈的内层线圈与前一饼饼式线圈的外层线圈形成第一气道；
    (2)在前一饼饼式线圈的内层线圈的端部设置用于隔开前一饼饼式线圈的内层线圈与后一饼饼式线圈的内层线圈的第二分隔块，在前一饼饼式线圈的外层线圈的端部设置用于隔开前一饼饼式线圈的外层线圈与后一饼饼式线圈的外层线圈的第三分隔块，在内筒上绕制后一饼饼式线圈的内层线圈，在后一饼饼式线圈的内层线圈的侧部设置用于隔开后一饼饼式线圈的内层线圈与后一饼饼式线圈的外层线圈的第一分隔块，在第一分隔块上绕制后一饼饼式线圈的外层线圈，后一饼饼式线圈的内层线圈与后一饼饼式线圈的外层线圈形成第一气道，前一饼饼式线圈的内层线圈与后一饼饼式线圈的内层线圈及前一饼饼式线圈的外层线圈与后一饼饼式线圈的外层线圈形成第二气道；
    重复上述步骤(2)直至完成最后一饼饼式线圈的绕制。
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