WO2022242698A1 - 一种干式变压器放电接地保护装置 - Google Patents

一种干式变压器放电接地保护装置 Download PDF

Info

Publication number
WO2022242698A1
WO2022242698A1 PCT/CN2022/093736 CN2022093736W WO2022242698A1 WO 2022242698 A1 WO2022242698 A1 WO 2022242698A1 CN 2022093736 W CN2022093736 W CN 2022093736W WO 2022242698 A1 WO2022242698 A1 WO 2022242698A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive
grounding
fixed
respectively connected
dry
Prior art date
Application number
PCT/CN2022/093736
Other languages
English (en)
French (fr)
Inventor
任玉龙
雷涛
徐志华
柴淑颖
李晓新
徐国杰
刘亚男
王京宝
Original Assignee
中铁电气工业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中铁电气工业有限公司 filed Critical 中铁电气工业有限公司
Publication of WO2022242698A1 publication Critical patent/WO2022242698A1/zh
Priority to ZA2023/02390A priority Critical patent/ZA202302390B/en

Links

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
    • 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

Definitions

  • the invention belongs to the field of transformer manufacturing, and in particular relates to a dry-type transformer discharge grounding protection device.
  • grounding discharge protection is required after power failure.
  • the dry-type transformer discharge grounding protection measures are usually to connect the end copper bars of the transformer phase coils and the end copper bars of the post insulators through the ground wire, and the ground wire and the end copper bars are fixed with bolts. It takes a long time for the operators to connect wires, the operation is complicated, and even accessories need to be made on site to use, there is a risk of accidental electric shock, and the operation safety is poor. Therefore, it is very necessary to install a discharge grounding protection device with simple structure and convenient operation on the transformer.
  • the purpose of the present invention is to solve the above-mentioned problems in the prior art, and provide a dry-type transformer discharge grounding protection device, which has a simple structure and is directly installed on the dry-type transformer. Risk of accidental electric shock during servicing.
  • a dry-type transformer discharge grounding protection device including 6 conductive grounding balls and 6 conductive terminals; each conductive terminal has mounting holes at both ends, of which 3 One end of the conductive terminal is respectively connected and fixed to the U, V, W of the first end of each phase coil on the high-voltage side of the transformer, and the other end is respectively connected and fixed to three of the conductive grounding balls; one end of the other three conductive terminals is respectively connected and fixed At the joints a, b, and c where the post insulators of each phase on the low-voltage side of the transformer are connected to the corresponding copper bars, the other ends are respectively connected and fixed to the other three conductive grounding balls.
  • the conductive grounding ball is made of copper with an integrated structure, and its connection end has an internal threaded hole, and the grounding end is spherical, which is fixed on the other end of the conductive terminal by a conductive bolt used in conjunction with the internal threaded hole .
  • the conductive grounding balls are made of hexagonal brass rods, the surface of which is tin-plated, and the spherical average diameter tolerance of the grounding end of each conductive grounding ball is not more than 0.1mm.
  • the grounding protection device of the present invention has a simple structure and is directly installed on the dry-type transformer.
  • the terminal of the discharge device is directly set on the spherical grounding end of the conductive grounding earth. No other operations are required, and the installation is convenient. The time is very short, which can effectively prevent the danger of accidental electric shock during transformer testing and maintenance, and the operation safety is strong.
  • Fig. 1 is a front view of the installation structure of the present invention installed on a dry-type transformer.
  • Fig. 2 is a left view of the installation structure of the present invention installed on a dry-type transformer.
  • Fig. 3 is a K-direction view of Fig. 2 .
  • Fig. 4 is a front view of the conductive grounding ball in the present invention.
  • Fig. 5 is the right side view of the conductive grounding ball in the present invention.
  • Fig. 6 is a front view of the conductive connection terminal in the present invention.
  • this embodiment includes six conductive grounding balls 5 and six conductive connection terminals 4 .
  • One end of the three conductive terminals 4 and one end of the three-phase copper bar 3 are respectively fixed to the U, V and W of the first end terminal 1 of each phase coil on the high-voltage side of the transformer 6 through conductive bolts 2, and the other ends are connected and fixed respectively.
  • the conductive grounding ball 5 is made of copper with an integral structure, and its connection end has an internally threaded hole 51, and the grounding end 52 is spherical, which is fixed to the conductive terminal by a conductive bolt used in conjunction with the internally threaded hole 51. 4 on the other end.
  • the conductive grounding ball 5 is made of a hexagonal brass rod, the surface of which is tin-plated, and the tolerance of the spherical average diameter of the grounding end 52 of each conductive grounding ball 5 is not more than 0.1 mm.
  • One end of the other three conductive terminals 4 is respectively connected and fixed to the joints a, b, and c where the pillar insulators of each phase on the low-voltage side of the transformer 6 are connected to the corresponding copper bars 7 through another conductive bolt 8, and the other ends are respectively connected and fixed to the other three Conductive ground ball 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

提供一种干式变压器（6）放电接地保护装置，包括6个导电接地球（5）和6个导电接线端子（4）；每个导电接线端子（4）两端有安装孔（41），其中3个导电接线端子（4）的一端分别连接固定在变压器（6）高压侧各相线圈首端接线头（1）的U、V、W处，另一端分别连接固定其中3个导电接地球（5）；另3个导电接线端子（4）的一端分别连接固定在变压器（6）低压侧各相支柱绝缘子与相应铜排连接的a，b，c连接处，另一端分别连接固定另3个导电接地球（5）；该结构简单，直接安装在干式变压器上，其接地操作方便，能有效防止变压器试验和检修时意外触电的危险。

Description

一种干式变压器放电接地保护装置 技术领域
本发明属于变压器制造领域，具体涉及一种干式变压器放电接地保护装置。
 背景技术
变压器试验、检修时，断电后需要接地放电保护。现有技术中干式变压器放电接地保护措施，通常是通过地线连接变压器各相线圈的端部铜排和支柱绝缘子的端部铜排，地线与端部铜排用螺栓固定，这种接地操作工作人员接线时间长，操作复杂，甚至需要现场制作附件使用，存在意外触电的危险，操作安全性差。因此，在变压器上设置一种结构简单、操作方便的放电接地保护装置是非常必要的。
 技术问题
本发明的目的就是解决现有技术中存在的上述问题，提供一种干式变压器放电接地保护装置，该装置结构简单，直接安装在干式变压器上，其接地操作方便，能有效防止变压器试验和检修时意外触电的危险。
 技术解决方案
为实现上述目的，本发明的技术解决方案是：一种干式变压器放电接地保护装置，包括6个导电接地球和6个导电接线端子；每个导电接线端子两端有安装孔，其中3个导电接线端子的一端分别连接固定在变压器高压侧各相线圈首端接线头的U、V、W处，另一端分别连接固定其中3个导电接地球；另3个导电接线端子的一端分别连接固定在变压器低压侧各相支柱绝缘子与相应铜排连接的a，b，c连接处，另一端分别连接固定另3个导电接地球。
进一步优选地，所述导电接地球为一体结构的铜材制成，其连接端有内螺纹孔，接地端为球形，其通过与内螺纹孔配合使用的导电螺栓固定在导电接线端子另一端上。
进一步优选地，所述导电接地球由六角黄铜棒制成，表面镀锡，各导电接地球的接地端的球形平均直径公差不超0.1mm。
 有益效果
本发明接地保护装置结构简单，直接安装在干式变压器上，接地时由放电装置接线端子直接套在导电接地球的球形接地端，无需其它操作，其安装方便，即接即走，工作人员接线时间非常短，能有效防止变压器试验和检修时意外触电的危险，操作安全性强。
 附图说明
图1为本发明安装在干式变压器上的安装结构主视图。
图2为本发明安装在干式变压器上的安装结构左视图。
图3为图2的K向视图。
图4为本发明中导电接地球的主视图。
图5为本发明中导电接地球的右视图。
图6为本发明中导电接线端子的主视图。
 本发明的实施方式
下面结合附图和具体实施对本发明做进一步的描述。
如图1至图6所示，本实施例包括6个导电接地球5和6个导电接线端子4。每个导电接线端子4两端有安装孔41。其中3个导电接线端子4的一端和三相铜排3的一端分别通过导电螺栓2固定在变压器6高压侧各相线圈首端接线头1的U、V和W处，另一端分别连接固定其中3个导电接地球5。优选地，所述导电接地球5为一体结构的铜材制成，其连接端有内螺纹孔51，接地端52为球形，其通过与内螺纹孔51配合使用的导电螺栓固定在导电接线端子4另一端上。优选地，所述导电接地球5由六角黄铜棒制成，表面镀锡，各导电接地球5的接地端52的球形平均直径公差不超0.1mm。另3个导电接线端子4的一端分别通过另一导电螺栓8连接固定在变压器6低压侧各相支柱绝缘子与相应铜排7连接的a，b，c连接处，另一端分别连接固定另3个导电接地球5。
当然，本发明还有其它多种实施例，在不违背本发明精神和实质的情况下，熟悉本领域的技术人员可根据本发明作出相应的改变和变形，但这些相应的改变和变形都应属于等同技术的改进，属于本发明权利要求的保护范围。

Claims (3)

  1. 一种干式变压器放电接地保护装置，其特征在于：包括6个导电接地球和6个导电接线端子；每个导电接线端子两端有安装孔，其中3个导电接线端子的一端分别连接固定在变压器高压侧各相线圈首端接线头的U、V、W处，另一端分别连接固定其中3个导电接地球；另3个导电接线端子的一端分别连接固定在变压器低压侧各相支柱绝缘子与相应铜排连接的a，b，c连接处，另一端分别连接固定另3个导电接地球。
  2. 根据权利要求1所述的干式变压器放电接地保护装置，其特征在于：所述导电接地球为一体结构的铜材制成，其连接端有内螺纹孔，接地端为球形，其通过与内螺纹孔配合使用的导电螺栓固定在导电接线端子另一端上。
  3. 根据权利要求2所述的干式变压器放电接地保护装置，其特征在于：所述导电接地球由六角黄铜棒制成，表面镀锡，各导电接地球的接地端的球形平均直径公差不超0.1mm。
PCT/CN2022/093736 2021-05-20 2022-05-19 一种干式变压器放电接地保护装置 WO2022242698A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA2023/02390A ZA202302390B (en) 2021-05-20 2023-02-23 Dry-type transformer discharge grounding protection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202121082302.XU CN214705687U (zh) 2021-05-20 2021-05-20 一种干式变压器放电接地保护装置
CN202121082302.X 2021-05-20

Publications (1)

Publication Number Publication Date
WO2022242698A1 true WO2022242698A1 (zh) 2022-11-24

Family

ID=78553173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/093736 WO2022242698A1 (zh) 2021-05-20 2022-05-19 一种干式变压器放电接地保护装置

Country Status (3)

Country Link
CN (1) CN214705687U (zh)
WO (1) WO2022242698A1 (zh)
ZA (1) ZA202302390B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN214705687U (zh) * 2021-05-20 2021-11-12 中铁电气工业有限公司 一种干式变压器放电接地保护装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290202A (zh) * 2011-04-29 2011-12-21 中国西电电气股份有限公司 一种用于分框式铁心变压器的铁心接地装置
CN205229199U (zh) * 2015-12-10 2016-05-11 国网四川省电力公司成都供电公司 一种变压器通用试验接线端子排
WO2018199695A1 (ko) * 2017-04-28 2018-11-01 유해진 변압기용 저압부싱 및 접지단자 어셈블리, 그 제조방법
CN211980386U (zh) * 2020-05-18 2020-11-20 广州中车骏发电气有限公司 一种用于干式变压器维修保护的接地结构
CN214705687U (zh) * 2021-05-20 2021-11-12 中铁电气工业有限公司 一种干式变压器放电接地保护装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290202A (zh) * 2011-04-29 2011-12-21 中国西电电气股份有限公司 一种用于分框式铁心变压器的铁心接地装置
CN205229199U (zh) * 2015-12-10 2016-05-11 国网四川省电力公司成都供电公司 一种变压器通用试验接线端子排
WO2018199695A1 (ko) * 2017-04-28 2018-11-01 유해진 변압기용 저압부싱 및 접지단자 어셈블리, 그 제조방법
CN211980386U (zh) * 2020-05-18 2020-11-20 广州中车骏发电气有限公司 一种用于干式变压器维修保护的接地结构
CN214705687U (zh) * 2021-05-20 2021-11-12 中铁电气工业有限公司 一种干式变压器放电接地保护装置

Also Published As

Publication number Publication date
ZA202302390B (en) 2023-06-28
CN214705687U (zh) 2021-11-12

Similar Documents

Publication Publication Date Title
US7701688B2 (en) Structure for installing lightning arrester for electric pole
WO2021052053A1 (zh) 气体绝缘金属封闭中性点成套装置
CN201673736U (zh) 针式绝缘子
WO2022242698A1 (zh) 一种干式变压器放电接地保护装置
CN208423608U (zh) 建筑工程电缆架设转弯导向装置
CN210863824U (zh) Gis设备回路电阻测试辅助装置
CN211086495U (zh) 一种电缆绝缘试验装置
CN204464511U (zh) 快速连接装置
CN206516818U (zh) 高压柜母线连接器
CN210837426U (zh) 一种变压器铁心接地引线结构
CN114698285A (zh) 一种稳定的电气柜加固接地装置
CN205389012U (zh) 一种智能配电盘接地装置
CN110614609A (zh) 螺栓紧固器
US2704795A (en) Load fuses for electric power lines
CN220020831U (zh) 一种变压器铁芯接地引线固定装置
CN110120642B (zh) 一种套管接线装置及输电设备
CN219811667U (zh) 一种绝缘导线穿刺接地线装置
CN213460485U (zh) 箱式变电站变压器低压侧接线结构
CN210775567U (zh) 一种用于主变压器检测试验的接线装置
CN205211967U (zh) 配电网线路检修用接地放电装置
CN216487635U (zh) 10kV变压器台固定接地装置
CN203502442U (zh) 用于10kV氧化物避雷器的高压试验辅助装置
CN111092402B (zh) 分体结构防晕型管型母线引流线夹
CN221174859U (zh) 一种变压器工频耐压试验装置
CN215955022U (zh) 一种电流互感器二次侧短接装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22804018

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22804018

Country of ref document: EP

Kind code of ref document: A1