WO2012163036A1 - 树脂浇注立体卷铁心非晶合金干式变压器 - Google Patents

树脂浇注立体卷铁心非晶合金干式变压器 Download PDF

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Publication number
WO2012163036A1
WO2012163036A1 PCT/CN2011/081587 CN2011081587W WO2012163036A1 WO 2012163036 A1 WO2012163036 A1 WO 2012163036A1 CN 2011081587 W CN2011081587 W CN 2011081587W WO 2012163036 A1 WO2012163036 A1 WO 2012163036A1
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core
voltage coil
coil
clamping member
resin
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PCT/CN2011/081587
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English (en)
French (fr)
Inventor
许凯旋
郭献清
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广东海鸿变压器有限公司
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Application filed by 广东海鸿变压器有限公司 filed Critical 广东海鸿变压器有限公司
Priority to US13/696,395 priority Critical patent/US9129739B2/en
Publication of WO2012163036A1 publication Critical patent/WO2012163036A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/08—Fixed transformers not covered by group H01F19/00 characterised by the structure without magnetic core
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • 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
    • H01F27/327—Encapsulating or impregnating
    • H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases

Definitions

  • the utility model belongs to the technical field of electric equipment, in particular to a non-encapsulated amorphous alloy dry type transformer with a three-dimensional structure.
  • the traditional amorphous alloy dry-type transformer has great advantages in energy saving, environmental protection and operation economy of the transformer.
  • the no-load loss can be reduced by 60% to 70% compared with the 10-type series, and the running cost is low and the comprehensive benefit is good.
  • the thickness of the amorphous alloy sheet is extremely thin, it is very sensitive to mechanical stress, the magnetostrictive property is sensitive, and the saturation magnetic density is low.
  • the core column and the coil of the amorphous alloy transformer are usually rectangular structures, so the conventional amorphous alloy is dry.
  • the transformer has high operating noise and poor short-circuit resistance.
  • the object of the present invention is to provide a resin-casting three-dimensional wound core amorphous alloy dry type transformer, which can effectively reduce the running noise of the transformer and improve the short circuit resistance of the transformer.
  • the present invention is achieved by a resin cast three-dimensional wound core amorphous alloy dry type transformer comprising a clip member, a core and a coil, the coil being composed of a three-phase coil wound around a core of a core, each phase coil being composed of The high-voltage coil and the low-voltage coil are configured;
  • the clamping member comprises an upper clamping member, a lower clamping member, an upper pressing plate, a lower pressing plate and a pressing screw;
  • the iron core comprises an annular arrangement and two adjacent fixed connections
  • Three single frames made of amorphous alloy, the cross-section of the vertical frame side and the horizontal frame side of the single frame are semi-circular or semi-reverse-polygonal;
  • the horizontal frame side of the single frame is an iron yoke, and two adjacent single frames
  • the vertical sides are connected to form a heart column, and the cross section of the column is circular or regular polygon;
  • the lower pressing plate is fixedly connected with the base fixed to the lower clamping member through the support rod, and the upper and lower pressing plates cooperate with the pressing screw; the upper pressing plate is located in the space above the iron core, and the lower pressing plate is located in the lower space of the iron core;
  • the iron yoke of the upper end of the iron core is disposed between one side of the upper pressing plate and a clip side of the upper clamping member, and the iron yoke of the lower end of the iron core is disposed on the base between the lower pressing plate and the lower clamping member;
  • the high voltage coil and the low voltage coil are disposed on the stem, and the upper and lower clamps clamp the high voltage coil and the low voltage coil;
  • the upper and lower pads are respectively disposed at two ends of the high voltage coil and the low voltage coil; the lower clamp and the lower clamp support the lower spacer, and the upper clamp and the upper clamp press the upper spacer.
  • the resin-casting three-dimensional wound core amorphous alloy dry type transformer is special in that the low-voltage coil is a foil-wound or wire-wound cylindrical structure, and the end insulation is sealed with a resin mixture.
  • the high voltage coil adopts a segmented cylindrical structure, and the entire coil conductor is encapsulated by a solid insulating layer of epoxy resin.
  • the resin-casting three-dimensional wound core amorphous alloy dry type transformer is special in that: three terminals of the high voltage coil and four terminals of the low voltage coil are respectively arranged on the upper side of the opposite side of the transformer. On the mounting bracket.
  • the resin cast three-dimensional rolled core amorphous alloy dry type transformer is special in that an elastic pad is disposed between the iron yoke and the base.
  • the invention relates to a resin-casting three-dimensional rolled iron core amorphous alloy dry type transformer, and a resin-casting three-dimensional rolled iron core amorphous alloy dry type transformer is a combination of the advantages of a resin-casting three-dimensional core dry type transformer and an amorphous alloy dry type transformer.
  • the core of the resin-cast three-dimensional rolled core amorphous alloy dry-type transformer is a three-dimensional wound core structure, and the core is sequentially rolled by several trapezoidal amorphous alloy strips to form a single-frame shape with an approximately semi-circular cross section, and the two cross sections are semicircular. Shaped single frames can be combined into an approximately circular core section.
  • the amorphous alloy sheets are tightly wound between each other.
  • the magnetic direction of the amorphous alloy is exactly the same as the magnetic path direction of the core, and the vibration during operation is small, which can solve the noise generated by the discontinuity of the magnetic core and avoid the tradition.
  • the disassembly and assembly of the amorphous alloy core forms a high energy-consuming and weak zone of the core, and the amorphous alloy core of the three-dimensional structure can save a large amount of amorphous alloy material and reduce the weight of the core, thereby further reducing the no-load loss of the transformer operation. And no-load current.
  • the coil of the resin-cast three-dimensional rolled core amorphous alloy dry-type transformer can be made into a standard circular structure, so that the force of the coil conductor on the circumference is uniform, and the short-circuit resistance of such a transformer is greatly improved.
  • Figure 1 is a perspective view of the present invention.
  • Figure 2 is a perspective view of the clip of the present invention.
  • Figure 3 is a perspective view of the core of the present invention.
  • Figure 4 is an assembly view of the clip and the core of the present invention.
  • Figure 5 is a perspective view of the low pressure foil wound coil of the present invention.
  • Figure 6 is a perspective view of the high voltage coil of the present invention.
  • a non-encapsulated three-dimensional rolled core amorphous alloy dry-type transformer includes a clamp member, a core 1 and a coil, and the coil is wound by a core on the core of the core 1
  • the phase coil is configured, and each phase coil is composed of a high voltage coil 2 and a low voltage coil 3.
  • the clip member includes an upper clamp member 4, a lower clamp member 5, an upper pressure plate 61, a lower pressure plate 62, and a pressing screw 7.
  • the core 1 includes three single frames 8 which are arranged in a ring shape and are adjacent to two fixedly connected amorphous alloys.
  • the cross section of the vertical frame side 81 and the horizontal frame side 82 of the single frame 8 are The semicircular shape may also be a semi-reverse polygonal shape;
  • the horizontal frame side 82 of the single frame 8 is an iron yoke, and the vertical sides of the adjacent two single frames 8 are connected to form a heart column, and the cross section of the core column is circular or Being a regular polygon;
  • the lower pressing plate 62 is fixedly connected to the base 63 fixed to the lower clamp member 5 through the support rod, and the upper and lower pressing plates 61 and 62 are fitted with the pressing screw 7; the upper pressing plate 61 is located in the upper portion of the core 1, and the lower portion The pressing plate 62 is located in the lower space of the core 1; in Fig. 2, 51 is a portion for supporting the lower block 10; and 41 is a portion for pressing the upper block.
  • the iron yoke of the upper end of the core 1 is disposed between one side of the upper pressing plate 61 and a clip side of the upper clamping member 4, and the iron yoke of the lower end of the core 1 is disposed at the base 63 between the lower pressing plate 62 and the lower clamping member 5.
  • a damping device is disposed between the iron yoke and the base 63, and the damping device is an elastic pad.
  • the high voltage coil 2 and the low voltage coil 3 are arranged on the stem, and the upper and lower clamps 4, 5 clamp the high voltage coil 2 and the low voltage coil 3;
  • Two ends of the high voltage coil 2 and the low voltage coil 3 are respectively provided with an upper spacer 9 and a lower spacer 10; the lower clamp 5 and the lower pressing plate 62 support the lower spacer 10, and the upper clamp 4 and the upper clamp 61 press the upper spacer 9.
  • the low-voltage coil 3 is a foil-wound or wire-wound cylindrical structure, and the end insulation is sealed with a resin mixture.
  • the high voltage coil 2 adopts a segmented cylindrical structure, and the entire coil conductor is encapsulated by a solid insulating layer of epoxy resin.
  • the high-voltage coil is cast with a resin, and the conductor and the resin insulating layer form a complete rigid body with good mechanical strength.
  • the circular structure of the coil can fully exert the advantages of its structure, so that the conductor is uniformly stressed on the circumference, which overcomes the shortcomings of the conductor stress concentration and the mechanical strength caused by the conventional amorphous alloy transformer coil being a rectangular structure, and greatly improves the Short-circuit resistance of amorphous alloy dry-type transformers.
  • the circular coil does not require additional tooling equipment during the winding process, and it is easier to ensure the winding size of the coil and the appearance is beautiful. It also avoids the insulation damage of the conductor by multiple tapping of the wooden hammer.
  • the three terminals 21, 22, 23 of the high voltage coil 2 and the four terminals 31, 32, 33, 34 of the low voltage coil 3 are respectively arranged on the mounting frame 11 of the upper clip 4 on the opposite side of the transformer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

一种树脂浇注立体卷铁心非晶合金干式变压器，包括夹件（4、5）、铁心（1）和线圈（2、3）。夹件包括上夹件（4）和下夹件(5），上夹件和下夹件通过压紧螺杆（7）连接。铁心为三维立体结构，三个下铁轭设置在下夹件基座（63）上。低压线圈（3）为圆形箔绕或线绕圆筒式结构，高压线圈（2）采用分段圆筒式结构，并用环氧树脂浇注。高压线圈和低压线圈的两端分别设置有上垫块（9）和下垫块（10）。

Description

树脂浇注立体卷铁心非晶合金干式变压器
技术领域
本实用新型属于电力设备的技术领域，具体是指一种立体结构的非包封非晶合金干式变压器。
背景技术
传统的非晶合金干式变压器，在变压器节能、环保、运行经济上已经有了很大的优势，空载损耗可比10型系列下降60%～70%，并且运行费用低、综合效益好。然而，由于非晶合金片厚度极薄，对机械应力非常敏感，磁致伸缩性能敏感，饱和磁密较低，非晶合金变压器的心柱和线圈通常为矩形结构，所以传统的非晶合金干变就存在着两大缺点，即变压器运行噪声高和抗短路能力差。
发明内容
本发明的目的是：提供一种树脂浇注立体卷铁心非晶合金干式变压器，它能有效地降低变压器运行噪声，提高变压器的抗短路能力。
本发明是这样实现的：一种树脂浇注立体卷铁心非晶合金干式变压器，包括夹件、铁心和线圈，所述线圈由绕在铁心的铁心柱上的三相线圈构成，各相线圈由高压线圈和低压线圈构成；所述夹件包括上夹件，下夹件、上压板、下压板和压紧螺杆；其特殊之处在于：所述铁心包括呈环形排列且相邻二个固定连接的非晶合金制成的三个单框，单框的竖框边和横框边的截面呈半圆形或半正多边形形；单框的横框边为铁轭，相邻二个单框的竖边连接后构成心柱，心柱的截面呈圆形或正多边形；
下压板通过支撑杆与固定在下夹件上的基座固定连接，上、下压板与压紧螺杆配合；上压板位于铁心上部的空间，下压板位于铁心的下部空间内；
铁心的上端的铁轭设置在上压板一侧边与上夹件的一夹件边之间，铁心的下端的铁轭设置在下压板与下夹件之间的基座上；
所述高压线圈和低压线圈设置在心柱上，上、下夹件夹紧高压线圈和低压线圈；
还包括一上垫块和下垫块；
高压线圈和低压线圈的两端分别设置有上垫块和下垫块；下夹件和下压板支撑下垫块，上夹件和上压板压紧上垫块。
所述的树脂浇注立体卷铁心非晶合金干式变压器，其特殊之处在于：所述低压线圈为箔绕或线绕圆筒式结构，端绝缘用树脂混料粘封。
所述高压线圈采用分段圆筒式结构，且整个线圈导体都被环氧树脂的固体绝缘层所包封。
所述的树脂浇注立体卷铁心非晶合金干式变压器，其特殊之处在于：所述高压线圈的三个接线端子和低压线圈的四个接线端子分别排列设在变压器的相对侧的上夹件的安装架上。
所述的树脂浇注立体卷铁心非晶合金干式变压器，其特殊之处在于：所述铁轭与基座之间设置有弹性垫。
本发明一种树脂浇注立体卷铁心非晶合金干式变压器，树脂浇注立体卷铁心非晶合金干式变压器是结合了树脂浇注立体卷铁心干式变压器和非晶合金干式变压器的各自优点。树脂浇注立体卷铁心非晶合金干式变压器的铁心为立体卷铁心结构，铁心由几种梯形非晶合金料带依次卷制形成近似半圆形截面的单框形状，两个横截面为半圆形的单框可以合并为一个近似圆形的心柱截面。非晶合金片之间卷制紧密，非晶合金的导磁方向与铁心的磁路方向完全一致，工作时震动小，既可以解决叠铁心因磁路不连贯而发出的噪音，又可以避免传统非晶合金铁心的拆装形成的铁心高耗能和薄弱区，并且立体结构的非晶合金铁心可较大程度的节省非晶合金材料，减少铁心的重量，能够进一步降低变压器运行的空载损耗和空载电流。树脂浇注立体卷铁心非晶合金干式变压器的线圈可以做成标准圆形结构，所以将使线圈导体在圆周上的受力均匀，大大提高此类变压器的抗短路能力。
附图说明
图1是本发明的立体图。
图2是本发明夹件的立体图。
图3是本发明铁心的立体图。
图4是本发明夹件与铁心装配图。
图5是本发明低压箔绕线圈的立体图。
图6是本发明高压线圈的立体图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步详细的描述，但并不构成对本发明的任何限制。
如图1、图2、图3所示，一种非包封立体卷铁心非晶合金干式变压器，包括夹件、铁心1和线圈，所述线圈由绕在铁心1的铁心柱上的三相线圈构成，各相线圈由高压线圈2和低压线圈3构成。
如图2所示，所述夹件包括上夹件4，下夹件5、上压板61、下压板62和压紧螺杆7。
如图3所示，所述铁心1包括呈环形排列且相邻二个固定连接的非晶合金制成的三个单框8，单框8的竖框边81和横框边82的截面呈半圆形，也可以呈半正多边形形；单框8的横框边82为铁轭，相邻二个单框8的竖边连接后构成心柱，心柱的截面呈圆形，也可以呈正多边形；
如图2所示，下压板62通过支撑杆与固定在下夹件5上的基座63固定连接，上、下压板61、62压紧螺杆7配合；上压板61位于铁心1上部的空间，下压板62位于铁心1的下部空间内；图2中，51是支撑下垫块10的部位；41是压紧上垫块的部位。
铁心1的上端的铁轭设置在上压板61一侧边与上夹件4的一夹件边之间，铁心1的下端的铁轭设置在下压板62与下夹件5之间的基座63上；所述铁轭与基座63之间设置有减震装置，所述减震装置为一弹性垫。采用这样的结构，使铁心1不再受其他多余的幅向力影响。
所述高压线圈2和低压线圈3设置在心柱上，上、下夹件4、5夹紧高压线圈2和低压线圈3；
还包括一上垫块和下垫块；
高压线圈2和低压线圈3的两端分别设置有上垫块9和下垫块10；下夹件5和下压板62支撑下垫块10，上夹件4和上压板61压紧上垫块9。
如图5所示，所述低压线圈3为箔绕或线绕圆筒式结构，端绝缘用树脂混料粘封。
如图6所示，所述高压线圈2采用分段圆筒式结构，且整个线圈导体都被环氧树脂的固体绝缘层所包封。高压线圈用树脂浇注，导体与树脂绝缘层形成一个完整的刚体，机械强度好。
圆形结构的线圈能够充分发挥其结构的优点，使导体在圆周上受力均匀，克服了传统非晶合金变压器线圈为矩形结构时所造成的导体应力集中和机械强度差的缺点，大大提高了非晶合金干式变压器的抗短路能力。此外，圆形线圈在绕制过程中不需要额外的工装设备，能够更加容易的保证线圈的绕制尺寸，外形美观。也避免了木锤的多次敲打对导体的绝缘破坏，
所述高压线圈2的三个接线端子21、22、23和低压线圈3的四个接线端子31、32、33、34分别排列设在变压器的相对侧的上夹件4的安装架11上。
以上所述的仅是本发明的优先实施方式。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明原理的情况下，还可以作出若干改进和变型，这也视为本发明的保护范围。

Claims (4)

  1. 一种树脂浇注立体卷铁心非晶合金干式变压器，包括夹件、铁心和线圈，所述线圈由绕在铁心的铁心柱上的三相线圈构成，各相线圈由高压线圈和低压线圈构成；所述夹件包括上夹件，下夹件、上压板、下压板和压紧螺杆；其特征在于：所述铁心包括呈环形排列且相邻二个固定连接的非晶合金制成的三个单框，单框的竖框边和横框边的截面呈半圆形或半正多边形形；单框的横框边为铁轭，相邻二个单框的竖边连接后构成心柱，心柱的截面呈圆形或正多边形；
    下压板通过支撑杆与固定在下夹件上的基座固定连接，上、下压板与压紧螺杆配合；上压板位于铁心上部的空间，下压板位于铁心的下部空间内；
    铁心的上端的铁轭设置在上压板一侧边与上夹件的一夹件边之间，铁心的下端的铁轭设置在下压板与下夹件之间的基座上；
    所述高压线圈和低压线圈设置在心柱上，上、下夹件夹紧高压线圈和低压线圈；
    还包括一上垫块和下垫块；
    高压线圈和低压线圈的两端分别设置有上垫块和下垫块；下夹件和下压板支撑下垫块，上夹件和上压板压紧上垫块。
  2. 根据权利要求1所述的树脂浇注立体卷铁心非晶合金干式变压器，其特征在于：所述低压线圈为箔绕或线绕圆筒式结构，端绝缘用树脂混料粘封。
    所述高压线圈采用分段圆筒式结构，且整个线圈导体都被环氧树脂的固体绝缘层所包封。
  3. 按照权利要求1或2所述的树脂浇注立体卷铁心非晶合金干式变压器，其特征在于：所述高压线圈的三个接线端子和低压线圈的四个接线端子分别排列设在变压器的相对侧的上夹件的安装架上。
  4. 根据权利要求1或2所述的树脂浇注立体卷铁心非晶合金干式变压器，其特征在于：所述铁轭与基座之间设置有弹性垫。
PCT/CN2011/081587 2011-05-27 2011-10-31 树脂浇注立体卷铁心非晶合金干式变压器 WO2012163036A1 (zh)

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