WO2022213602A1 - 立体卷铁心变压器的夹持装置和变压器 - Google Patents

立体卷铁心变压器的夹持装置和变压器 Download PDF

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Publication number
WO2022213602A1
WO2022213602A1 PCT/CN2021/129879 CN2021129879W WO2022213602A1 WO 2022213602 A1 WO2022213602 A1 WO 2022213602A1 CN 2021129879 W CN2021129879 W CN 2021129879W WO 2022213602 A1 WO2022213602 A1 WO 2022213602A1
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Prior art keywords
clamping device
assemblies
transformer
iron core
pressing plate
Prior art date
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Ceased
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PCT/CN2021/129879
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English (en)
French (fr)
Inventor
许凯旋
梁庆宁
杨剑波
谭恒志
黄嘉俊
张景暖
关卓文
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Haihong Electric Co Ltd
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Haihong Electric Co Ltd
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Publication date
Application filed by Haihong Electric Co Ltd filed Critical Haihong Electric Co Ltd
Priority to DE112021000110.8T priority Critical patent/DE112021000110T5/de
Priority to US17/640,040 priority patent/US20240047124A1/en
Priority to JP2022518396A priority patent/JP2023523482A/ja
Publication of WO2022213602A1 publication Critical patent/WO2022213602A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01F27/30—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
    • 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
    • H01F27/303—Clamping coils, windings or parts thereof together
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H01F27/2455—Magnetic cores made from sheets, e.g. grain-oriented using bent laminations
    • 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
    • H01F27/33—Arrangements for noise damping

Definitions

  • the invention relates to the technical field of power equipment, in particular to a clamping device for a three-dimensional wound iron core transformer and a transformer.
  • Three-dimensional wound core transformers are being used more and more widely due to their excellent performance, low no-load loss and low noise level.
  • a three-dimensional wound iron core transformer is usually provided with a clamping device, which is used to provide support for the coil winding during the assembly and operation of the transformer, so as to avoid the displacement of the coil winding and affect the performance of the transformer, thereby causing no-load loss and noise. increase.
  • the traditional clamping device mainly includes the upper and lower clamping parts of the equilateral triangular frame.
  • the upper clamping part and the lower clamping part are welded by steel plates or section steel, and the upper and lower clamping parts surround the outline of the iron core to form a
  • the upper clamp and the lower clamp are connected by a plurality of screw assemblies, which occupy a larger volume overall, are heavier in weight, and require more consumables for manufacture.
  • Embodiments of the present invention provide a clamping device for a three-dimensional wound iron core transformer and a transformer, which can reduce the volume and weight of the clamping device and save consumables.
  • an embodiment of the present invention provides a clamping device for a three-dimensional wound iron core transformer, and the clamping device includes:
  • the lower frame is configured to be arranged on the lower side of the plurality of coil windings of the three-dimensional wound iron core transformer;
  • the plurality of upper pressing plate assemblies are arranged to be distributed on the upper side of the plurality of coil windings;
  • a plurality of screw assemblies are used for connecting the lower frame and the upper pressing plate assembly, so that the lower frame and the upper pressing plate assembly jointly clamp the coil winding.
  • the clamping device of the embodiment of the present invention includes a lower frame, a plurality of upper pressure plate assemblies and a plurality of screw assemblies, the lower frame is used for being arranged on the lower side of the plurality of coil windings of the three-dimensional wound iron core transformer, and the upper pressure plate assemblies are used for distributed arrangement On the upper side of the plurality of coil windings, the lower frame and the upper platen assembly are connected by a screw assembly, so as to jointly clamp the coil windings.
  • the clamping device provided by the embodiment of the present invention reduces the steel consumables around the iron core, makes the structure simpler, occupies a smaller overall volume, and is lighter in weight, thus saving materials and reducing transformer miscellaneous materials. The role of dissipation loss.
  • the plurality of upper platen assemblies include a plurality of first upper platen assemblies, each of which is configured to be distributed on one side of the core leg of the three-dimensional wound iron core.
  • the first upper platen assembly includes:
  • the first upper pressing block is used to be arranged between the first upper pressing plate and the coil winding.
  • the plurality of screw assemblies include a plurality of first screw assemblies, the first screw assemblies are used to connect the first upper platen assembly and the lower frame, and the first screw assemblies
  • the assembly includes a first tightening screw and a first tightening nut, wherein a hoisting member is provided on the top of the first tightening screw.
  • the three-dimensional wound iron core includes three iron core columns, and at least one of the first upper pressing plate assemblies is provided on the side of each core column.
  • the plurality of upper platen assemblies includes a plurality of second upper platen assemblies, each of which is configured to be distributed on one upper yoke side of the three-dimensional wound iron core correspondingly .
  • the second upper platen assembly includes:
  • the second upper pressing block is used for being arranged between the second upper pressing plate and the coil winding.
  • the three-dimensional wound iron core includes three upper iron yokes, and at least one of the second upper pressing plate assemblies is provided on the side of each upper iron yoke.
  • the clamping device further comprises:
  • the lower iron yoke insulating part is arranged between the lower frame and the coil winding.
  • an embodiment of the present invention provides a transformer, where the transformer includes the clamping device according to any embodiment of the first aspect.
  • the transformer of the technical solution of the present invention includes the clamping device according to any one of the embodiments of the first aspect, the clamping device includes a lower frame, a plurality of upper platen assemblies and a plurality of screw assemblies, and the lower frame is used to be arranged on the three-dimensional wound iron core transformer.
  • the lower side of the plurality of coil windings, the upper platen assembly is used to be distributed on the upper side of the plurality of coil windings, the lower frame and the upper platen assembly are connected by a screw assembly, so as to jointly clamp the coils winding.
  • the transformer provided by the embodiment of the present invention adopts the clamping device, which reduces the steel consumables around the iron core, makes the structure simpler, occupies a smaller overall volume, and is lighter in weight, which saves money. materials and the effect of reducing transformer stray losses.
  • FIG. 1 is a schematic diagram of a front view structure of a transformer provided by an embodiment of the present invention.
  • FIG. 2 is a schematic top-view structural diagram of a transformer provided by an embodiment of the present invention.
  • Iron yoke 11 Iron yoke 11, iron core column 12, upper iron yoke 111, lower iron yoke 112,
  • the lower frame 31 the upper platen assembly 32, the screw assembly 33,
  • the lower iron yoke insulator 311 The lower iron yoke insulator 311 .
  • At least one refers to one or more, and "a plurality” refers to two or more.
  • And/or which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can indicate the existence of A alone, the existence of A and B at the same time, and the existence of B alone. where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one of the following” and similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, where a, b, c may be single, or Can be multiple.
  • Three-dimensional wound core transformers are being used more and more widely due to their excellent performance, low no-load loss and low noise level.
  • a three-dimensional wound iron core transformer is usually provided with a clamping device, which is used to provide support for the coil winding during the assembly and operation of the transformer, so as to avoid the displacement of the coil winding and affect the performance of the transformer, thereby causing no-load loss and noise. increase.
  • the traditional clamping device mainly includes the upper and lower clamping parts of the equilateral triangular frame.
  • the upper clamping part and the lower clamping part are welded by steel plates or section steel, and the upper and lower clamping parts surround the outline of the iron core to form a
  • the upper clamping piece and the lower clamping piece are connected by a plurality of screw components, which occupy a larger volume overall, are heavier in weight, and require more steel consumables for manufacture.
  • the stray loss of the transformer will also increase.
  • embodiments of the present invention provide a clamping device for a three-dimensional wound iron core transformer and a transformer, which can reduce the volume and weight of the clamping device and save consumables.
  • the transformer shown in FIG. 1 is a three-dimensional wound iron core transformer, including a three-dimensional wound iron core 10 , a coil winding 20 and a clamping device 30 .
  • the three-dimensional wound iron core 10 is composed of a plurality of iron yokes 11 and a plurality of iron core legs 12 .
  • the number of the iron core columns 12 is three, and the three iron core columns 12 are arranged in a regular triangle;
  • the iron yoke 11 includes an upper iron yoke 111 and a lower iron yoke 112, and the number of the upper iron yoke 111 and the lower iron yoke 112 is three, respectively.
  • the two adjacent iron core columns 12 are connected by the upper iron yoke 111 and the lower iron yoke 112 .
  • the number of coil windings 20 in the embodiment of the present invention is three, corresponding to A-phase coil windings, B-phase coil windings, and C-phase coil windings.
  • the three-phase coil windings 20 are wound around the three core legs 12 in one-to-one correspondence.
  • each phase coil winding 20 includes a low-voltage coil winding and a high-voltage coil winding, and the high-voltage coil winding is wound on the outside of the low-voltage coil winding.
  • the clamping device 30 of the three-dimensional wound iron core transformer provided by the embodiment of the present invention includes:
  • the lower frame 31 is used to be arranged on the lower side of the plurality of coil windings 20 of the three-dimensional wound iron core transformer;
  • the upper platen assemblies 32 are arranged to be distributed on the upper side of the plurality of coil windings 20;
  • a plurality of screw assemblies 33 are used for connecting the lower frame 31 and the upper pressing plate assembly 32 , so that the lower frame 31 and the upper pressing plate assembly 32 jointly clamp the coil winding 20 .
  • the lower frame 31 adopts a frame member with a substantially triangular structure.
  • the lower frame 31 is assembled on the lower side of the coil winding 20 and is attached to the bottom end face of the coil winding 20 .
  • a plurality of upper pressure plate assemblies 32 are distributed on the upper side of the three-phase coil winding 20. Specifically, at least one upper pressure plate assembly 32 is respectively disposed on the upper side of the coil winding 20 of each phase. In this way, for each phase The coil winding 20 is clamped by the upper platen assembly 32 distributed on the coil winding 20 together with the lower frame 31 to clamp the coil winding 20 .
  • each upper platen assembly 32 is provided with a first through hole
  • the lower frame 31 is opened with a plurality of second through holes
  • the plurality of second through holes and the plurality of first through holes of the upper platen assembly 32 Corresponding to each other, the lower frame 31 and the upper platen assembly 32 are connected through the corresponding first through hole and the second through hole through the screw assembly 33, so that the lower frame 31 and the upper platen assembly 32 clamp the coil together. Winding 20.
  • the clamping device 30 provided by the embodiment of the present invention adopts a plurality of upper pressing plate assemblies 32 to replace the traditional frame-type upper clamping member.
  • the steel consumables around the iron core can be reduced, the structure is simpler, the overall occupied volume is smaller, the weight is lighter, and the materials required for manufacturing the clamping device 30 can be saved;
  • the reduction of steel consumables is also conducive to reducing the stray losses of the transformer.
  • each of the upper platen assemblies 32 in the embodiment of the present invention is independent of each other. Compared with the integrated Y-shaped structural frame, it can independently apply pressure to the coil windings 20 without being affected by the inconsistency of the end face heights of the coil windings 20 of each phase. , the tightness of the coil winding 20 is strengthened.
  • the plurality of upper pressing plate assemblies 32 include a first upper pressing plate assembly 321 and/or a second upper pressing plate assembly 322 .
  • the number of the first upper platen assemblies 321 is multiple, and each of the first upper platen assemblies 321 is correspondingly distributed on one iron core column 12 side of the three-dimensional wound iron core 10 .
  • At least one of the first upper pressure plate assemblies 321 is provided on each iron core column 12 of the transformer, so as to ensure that each phase coil winding 20 is provided with at least one of the first upper pressure plate assemblies 321.
  • An upper pressure plate assembly 321 independently applies pressure to the corresponding coil windings 20, and is not affected by other first upper pressure plate assemblies 321, so that each phase coil winding 20 can be clamped.
  • the embodiment of the present invention does not limit the specific quantity of the first upper pressing plate assembly 321 .
  • the number of the first upper platen assemblies 321 is three, and the three first upper platen assemblies 321 are distributed in a triangle and are correspondingly disposed on the three iron core columns 12 sides.
  • the first upper pressing plate assembly 321 may be attached to the outer side surface of the corresponding core column 12 .
  • each second upper platen assembly 322 is correspondingly distributed on the side of one upper iron yoke 111 of the three-dimensional wound iron core 10 .
  • At least one second upper pressing plate assembly 322 is provided on each side of the upper iron yoke 111 .
  • the embodiment of the present invention does not limit the specific number of the second upper pressing plate assemblies 322 .
  • the number of the second upper platen assemblies 322 is three, and the three second upper platen assemblies 322 are distributed in a Y-shape and are correspondingly disposed on the sides of the three upper iron yokes 111 .
  • the second upper pressing plate assembly 322 may be attached to the outer side surface of the corresponding upper iron yoke 111 , and simultaneously press the two adjacent coil windings 20 .
  • the first upper platen assembly 321 may include:
  • the first upper pressing block 3212 is arranged between the first upper pressing plate 3211 and the coil winding 20 .
  • the first upper pressing plate 3211 is disposed on the first upper pressing block 3212 , and the first upper pressing block 3212 is attached to the upper end face of the coil winding 20 . In this way, the first upper pressing plate 3211 applies pressure to the coil winding 20 through the first upper pressing block 3212 .
  • the plurality of screw assemblies 33 include a plurality of first screw assemblies 331, and the first screw assemblies 331 are used to connect the first upper pressing plate assembly 321 and the lower frame 31.
  • the first screw assemblies 331 331 includes a first tensioning screw 3311 and a first tightening nut 3312.
  • the first upper pressing plate 3211 cooperates with the lower frame 31 to clamp the coil winding 20 through the first upper pressing block 3212 and the first screw assembly 331 .
  • the first screw assembly 331 may further include a hoisting member 3313 disposed on the top of the first tensioning screw 3311 .
  • the hoisting member 3313 may be a hoisting plate. When hoisting the transformer of the three-dimensional wound iron core 10 , the hoisting can be realized by the hoisting members 3313 on the plurality of first tensioning screws 3311 .
  • the second upper platen assembly 322 includes:
  • the second upper pressing plate 3221 The second upper pressing plate 3221;
  • the second upper pressing block 3222 is arranged between the second upper pressing plate 3221 and the coil winding 20 .
  • the plurality of screw assemblies 33 include a plurality of second screw assemblies 332, the second screw assemblies 332 are used to connect the second upper platen assembly 322 and the lower frame 31, and the second screw assemblies 332 332 includes a second tensioning screw 3321 and a second tightening nut 3322.
  • each second upper pressing plate assembly 322 may be connected to the lower frame 31 through two or more second screw assemblies 332 to improve the reliability of the connection.
  • the second upper pressing plate 3221 cooperates with the lower frame 31 to clamp two adjacent coil windings 20 through the second upper pressing block 3222 and the second screw assembly 332 .
  • the clamping device 30 further includes a lower iron yoke insulator 311 , and the lower iron yoke insulator 311 is used to be disposed on the lower frame 31 . and the coil winding 20 .

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

Abstract

本发明公开了一种立体卷铁心变压器的夹持装置和变压器，夹持装置包括下框架、多个上压板组件和多个螺杆组件，下框架用于设置在立体卷铁心变压器的多个线圈绕组的下侧，多个上压板组件用于分布设置在所述多个线圈绕组的的上侧，所述下框架和所述上压板组件通过螺杆组件连接，从而共同夹紧所述线圈绕组。本发明实施例提供的变压器由于采用了该夹持装置，相比传统的夹持装置，减少了铁心周边的钢铁耗材，使得结构更简单，总体占有的体积更小，重量更轻，起到节省材料和减少变压器杂散损耗的作用。

Description

立体卷铁心变压器的夹持装置和变压器 技术领域
本发明涉及电力设备技术领域，特别是涉及一种立体卷铁心变压器的夹持装置和变压器。
背景技术
立体卷铁心变压器由于具有性能优异、空载损耗和噪音水平低等优势，而被越来越广泛地应用。
在相关技术中，立体卷铁心变压器通常设置有夹持装置，用于在变压器的装配以及运行过程中给线圈绕组提供支撑，避免线圈绕组移位而影响变压器的性能，从而造成空载损耗以及噪声增大。
传统的夹持装置主要包括大体为正三角形框架的上夹件和下夹件，上夹件和下夹件由钢板或者型钢焊接而成，上夹件和下夹件围绕铁心的轮廓线构成一个整体，上夹件和下夹件之间通过多个螺杆组件连接，其总体占有的体积较大，重量较重，而且制造所用的耗材较多。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种立体卷铁心变压器的夹持装置和变压器，能够减小夹持装置的体积和重量，节省耗材。
第一方面，本发明实施例提供了一种立体卷铁心变压器的夹持装置，该夹持装置包括：
下框架，所述下框架用于设置在立体卷铁心变压器的多个线圈绕组的下侧；
多个上压板组件，所述多个上压板组件用于分布设置在所述多个线圈绕组的上侧；
多个螺杆组件，所述螺杆组件用于连接所述下框架与所述上压板组件，使所述下框架和所述上压板组件共同夹紧所述线圈绕组。
根据本发明实施例第一方面的夹持装置，至少具有以下有益效果：
本发明实施例的夹持装置，包括下框架、多个上压板组件和多个螺杆组件，下框架用于设置在立体卷铁心变压器的多个线圈绕组的下侧，上压板组件用于分布设置在所述多个线圈绕组的的上侧，所述下框架和所述上压板组件通过螺杆组件连接，从而共同夹紧所述线圈绕组。本发明实施例提供的夹持装置，相比传统的夹持装置，减少了铁心周边的钢铁耗材，使得结构更简单，总体占有的体积更小，重量更轻，起到节省材料和减少变压器杂散损耗的作用。
根据本发明第一方面的一些实施例，所述多个上压板组件包括多个第一上压板组件，每个所述第一上压板组件用于对应分布在立体卷铁心的一个铁心柱侧。
根据本发明第一方面的一些实施例，所述第一上压板组件，包括：
第一上压板；
第一上压块，用于设置在所述第一上压板和所述线圈绕组之间。
根据本发明第一方面的一些实施例，所述多个螺杆组件包括多个第一螺杆组件，所述第 一螺杆组件用于连接第一上压板组件和所述下框架，所述第一螺杆组件包括第一拉紧螺杆和第一紧固螺母，其中，所述第一拉紧螺杆的顶部设置有吊装件。
根据本发明第一方面的一些实施例，所述立体卷铁心包括三个铁心柱，每个铁心柱侧设有至少一个所述第一上压板组件。
根据本发明第一方面的一些实施例，所述多个上压板组件包括多个第二上压板组件，每个所述第二上压板组件用于对应分布在立体卷铁心的一个上铁轭侧。
根据本发明第一方面的一些实施例，所述第二上压板组件，包括：
第二上压板；
第二上压块，用于设置在所述第二上压板和所述线圈绕组之间。
根据本发明第一方面的一些实施例，所述立体卷铁心包括三个上铁轭，每个上铁轭侧设有至少一个所述第二上压板组件。
根据本发明第一方面的一些实施例，夹持装置还包括：
下铁轭绝缘件，用于设置在所述下框架和所述线圈绕组之间。
第二方面，本发明实施例提供了一种变压器，该变压器包括如第一方面任一实施例所述的夹持装置。
根据本发明第二方面实施例的变压器，至少具有如下有益效果：
本发明技术方案的变压器，包括第一方面任意一项实施例的夹持装置，该夹持装置包括下框架、多个上压板组件和多个螺杆组件，下框架用于设置在立体卷铁心变压器的多个线圈绕组的下侧，上压板组件用于分布设置在所述多个线圈绕组的的上侧，所述下框架和所述上压板组件通过螺杆组件连接，从而共同夹紧所述线圈绕组。本发明实施例提供的变压器由于采用了该夹持装置，相比传统的夹持装置，减少了铁心周边的钢铁耗材，使得结构更简单，总体占有的体积更小，重量更轻，起到节省材料和减少变压器杂散损耗的作用。
附图说明
附图用来提供对本发明技术方案的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明的技术方案，并不构成对本发明技术方案的限制。
图1是本发明实施例提供的变压器的主视结构示意图；
图2是本发明实施例提供的变压器的俯视结构示意图。
附图中的标记说明：
立体卷铁心10，线圈绕组20，夹持装置30，
铁轭11，铁心柱12，上铁轭111，下铁轭112，
下框架31，上压板组件32，螺杆组件33，
第一上压板组件321，第一上压板3211，第一上压块3212，
第二上压板组件322，第二上压板3221，第二上压块3222，
第一螺杆组件331，第一拉紧螺杆3311，第一紧固螺母3312，吊装件3313，
第二螺杆组件332，第二拉紧螺杆3321，第二紧固螺母3322，
下铁轭绝缘件311。
具体实施方式
下面详细描述本发明的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
应了解，在本发明的描述中，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。本领域普通技术人员应当可以意识到，本发明实施例描述的连接包括直接连接和通过中间部件相连的间接连接。
本发明的描述中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示单独存在A、同时存在A和B、单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项”及其类似表达，是指的这些项中的任意组合，包括单项或复数项的任意组合。例如，a，b和c中的至少一项可以表示：a，b，c，a和b，a和c，b和c或a和b和c，其中a，b，c可以是单个，也可以是多个。
立体卷铁心变压器由于具有性能优异、空载损耗和噪音水平低等优势，而被越来越广泛地应用。
在相关技术中，立体卷铁心变压器通常设置有夹持装置，用于在变压器的装配以及运行过程中给线圈绕组提供支撑，避免线圈绕组移位而影响变压器的性能，从而造成空载损耗以及噪声增大。
传统的夹持装置主要包括大体为正三角形框架的上夹件和下夹件，上夹件和下夹件由钢板或者型钢焊接而成，上夹件和下夹件围绕铁心的轮廓线构成一个整体，上夹件和下夹件之间通过多个螺杆组件连接，其总体占有的体积较大，重量较重，而且制造所用的钢铁耗材较多。在立体卷铁心附近的钢铁耗材较多的情况下，还会增加变压器的杂散损耗。
目前也有采用Y字形结构的上夹件和下夹件，但是受安装偏差和搬运振动影响，很难保证变压器的多个线圈绕组的上/下端面均处于同一高度，这种情况下使用Y字形结构的夹件，可能出现每个线圈绕组所受的压力不平均的问题，不能保证将每个线圈绕组压紧。
基于此，本发明实施例提供了一种立体卷铁心变压器的夹持装置和变压器，能够减小夹持装置的体积和重量，节省耗材。
请参见图1和图2，示出了本发明实施例提供的一种变压器。图1所示的变压器为立体卷铁心变压器，包括：立体卷铁心10、线圈绕组20和夹持装置30。
如图1和图2所示，本发明实施例的立体卷铁心10由多个铁轭11和多个铁心柱12构成。具体的，铁心柱12数量为三个，三个铁心柱12呈正三角形排列；铁轭11包括上铁轭111和下铁轭112，上铁轭111和下铁轭112数量分别为三个，相邻两个铁心柱12通过上铁轭111 和下铁轭112连接。
如图1和图2所示，本发明实施例的线圈绕组20的数量为三个，对应为A相线圈绕组、B相线圈绕组、C相线圈绕组。三相线圈绕组20一一对应地绕在三个铁心柱12上。具体的，每相线圈绕组20包括低压线圈绕组和高压线圈绕组，且高压线圈绕组绕在低压线圈绕组的外侧。
如图1和图2所示，本发明实施例提供的立体卷铁心变压器的夹持装置30包括：
下框架31，所述下框架31用于设置在立体卷铁心变压器的多个线圈绕组20的下侧；
多个上压板组件32，所述上压板组件32用于分布设置在所述多个线圈绕组20的的上侧；
多个螺杆组件33，所述螺杆组件33用于连接所述下框架31与所述上压板组件32，使所述下框架31和所述上压板组件32共同夹紧所述线圈绕组20。
可以理解的是，下框架31采用结构大体为三角形的框架构件。具体实现时，将下框架31装配在线圈绕组20的下侧，并贴合线圈绕组20的底部端面。
可以理解的是，多个上压板组件32分布设置在三相线圈绕组20的的上侧，具体的，每相线圈绕组20上侧分别设置有至少一个上压板组件32，如此，针对每一相线圈绕组20，通过分布在线圈绕组20上的上压板组件32与下框架31一起对线圈绕组20进行夹持。
可以理解的是，每个上压板组件32上开有第一通孔，下框架31上开有多个第二通孔，多个第二通孔与多个上压板组件32的第一通孔相互对应，通过螺杆组件33穿过对应的第一通孔和第二通孔连接下框架31与上压板组件32，从而使所述下框架31和所述上压板组件32共同夹紧所述线圈绕组20。
本发明实施例提供的夹持装置30，采用多个上压板组件32取代传统的框架式上夹件。如此，相比传统的夹持装置30，能够减少铁心周边的钢铁耗材，结构更加简单，总体占有的体积更小，重量更轻，节省了制造夹持装置30所需的材料；而且铁心周边的钢铁耗材减少，也有利于减少变压器的杂散损耗。
另外，本发明实施例的各个上压板组件32之间相互独立，相比一体式的Y字形结构框架，能够不受各相线圈绕组20的端面高度不一致的影响，独立地向线圈绕组20施加压力，加强了线圈绕组20的紧固程度。
可以理解的是，所述多个上压板组件32包括第一上压板组件321和/或第二上压板组件322。
可以理解的是，所述第一上压板组件321的数量为多个，每个第一上压板组件321对应分布在立体卷铁心10的一个铁心柱12侧。
具体的，变压器的每个铁心柱12侧设有至少一个所述第一上压板组件321，如此，保证每一相线圈绕组20上设有至少一个所述第一上压板组件321，每个第一上压板组件321独立向对应的线圈绕组20施加压力，不受其它第一上压板组件321的影响，保证每一相线圈绕组20均能被夹紧。当然，本发明实施例对第一上压板组件321的具体数量不做限定。
例如，如图2所示，第一上压板组件321的数量为三个，三个第一上压板组件321呈三角形分布，对应设置在三个铁心柱12侧。具体应用时，第一上压板组件321可以贴合在对应的铁心柱12外侧面处。
可以理解的是，所述第二上压板组件322的数量为多个，每个第二上压板组件322对应分布在立体卷铁心10的一个上铁轭111侧。
具体的，为了实现对各相线圈绕组20的夹持，每个上铁轭111侧设有至少一个所述第二上压板组件322。当然，本发明实施例对第二上压板组件322的具体数量不做限定。
例如，如图2所示，第二上压板组件322的数量为三个，三个第二上压板组件322呈Y字形分布，对应设置在三个上铁轭111侧。具体应用时，第二上压板组件322可以贴合在对应的上铁轭111外侧面处，并同时压紧相邻的两个线圈绕组20。
作为示例，所述第一上压板组件321，可以包括：
第一上压板3211；
第一上压块3212，用于设置在所述第第一上压板3211和所述线圈绕组20之间。
如图1所示，第一上压板3211设置在第一上压块3212上，第一上压块3212贴合在线圈绕组20上端面处。如此，第一上压板3211通过第一上压块3212施加压力给线圈绕组20。
可以理解的是，所述多个螺杆组件33包括多个第一螺杆组件331，所述第一螺杆组件331用于连接第一上压板组件321和所述下框架31，所述第一螺杆组件331包括第一拉紧螺杆3311和第一紧固螺母3312。
这里，第一上压板3211通过第一上压块3212、第一螺杆组件331与下框架31配合夹紧线圈绕组20。在具体实现过程中，通过拧紧第一螺杆组件331保证对应的线圈绕组20受到足够的夹紧力。
第一螺杆组件331还可以包括设置在所述第一拉紧螺杆3311顶部的吊装件3313。示例性的，所述吊装件3313可以为吊装板。在对立体卷铁心10变压器进行吊装时，可以通过多个第一拉紧螺杆3311上的吊装件3313实现吊装。
作为示例，所述第二上压板组件322，包括：
第二上压板3221；
第二上压块3222，用于设置在所述第二上压板3221和所述线圈绕组20之间。
可以理解的是，所述多个螺杆组件33包括多个第二螺杆组件332，所述第二螺杆组件332用于连接第二上压板组件322和所述下框架31，所述第二螺杆组件332包括第二拉紧螺杆3321和第二紧固螺母3322。
如图1所示，每个第二上压板组件322可以通过两个或者两个以上的第二螺杆组件332与所述下框架31连接，以提高连接的可靠性。
这里，第二上压板3221通过第二上压块3222、第二螺杆组件332与下框架31配合夹紧相邻的两个线圈绕组20。在具体实现过程中，通过拧紧第二螺杆组件332保证对应的两个线圈绕组20受到足够的夹紧力。
可以理解的是，为了减少钢制的下框架31对线圈绕组20的性能影响，夹持装置30还包括下铁轭绝缘件311，该下铁轭绝缘件311用于设置在所述下框架31和所述线圈绕组20之间。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所属技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下，作出各种变化。

Claims (10)

  1. 一种立体卷铁心变压器的夹持装置，其特征在于，包括：
    下框架，所述下框架用于设置在立体卷铁心变压器的多个线圈绕组的下侧；
    多个上压板组件，所述多个上压板组件用于分布设置在所述多个线圈绕组的上侧；
    多个螺杆组件，所述螺杆组件用于连接所述下框架与所述上压板组件，使所述下框架和所述上压板组件共同夹紧所述线圈绕组。
  2. 根据权利要求1所述的夹持装置，其特征在于，所述多个上压板组件包括多个第一上压板组件，每个所述第一上压板组件用于对应分布在立体卷铁心的一个铁心柱侧。
  3. 根据权利要求2所述的夹持装置，其特征在于，所述第一上压板组件，包括：
    第一上压板；
    第一上压块，用于设置在所述第一上压板和所述线圈绕组之间。
  4. 根据权利要求2所述的夹持装置，其特征在于，所述多个螺杆组件包括多个第一螺杆组件，所述第一螺杆组件用于连接第一上压板组件和所述下框架，所述第一螺杆组件包括第一拉紧螺杆和第一紧固螺母，其中，所述第一拉紧螺杆的顶部设置有吊装件。
  5. 根据权利要求2所述的夹持装置，其特征在于，所述立体卷铁心包括三个铁心柱，每个铁心柱侧设有至少一个所述第一上压板组件。
  6. 根据权利要求1所述的夹持装置，其特征在于，所述多个上压板组件包括多个第二上压板组件，每个所述第二上压板组件用于对应分布在立体卷铁心的一个上铁轭侧。
  7. 根据权利要求6所述的夹持装置，其特征在于，所述第二上压板组件，包括：
    第二上压板；
    第二上压块，用于设置在所述第二上压板和所述线圈绕组之间。
  8. 根据权利要求6所述的夹持装置，其特征在于，所述立体卷铁心包括三个上铁轭，每个上铁轭侧设有至少一个所述第二上压板组件。
  9. 根据权利要求1所述的夹持装置，其特征在于，还包括：
    下铁轭绝缘件，用于设置在所述下框架和所述线圈绕组之间。
  10. 一种变压器，其特征在于，包括如权利要求1-9任一所述的夹持装置。
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