WO2015180001A1 - 一种电容式套管末屏接地装置 - Google Patents

一种电容式套管末屏接地装置 Download PDF

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Publication number
WO2015180001A1
WO2015180001A1 PCT/CN2014/001056 CN2014001056W WO2015180001A1 WO 2015180001 A1 WO2015180001 A1 WO 2015180001A1 CN 2014001056 W CN2014001056 W CN 2014001056W WO 2015180001 A1 WO2015180001 A1 WO 2015180001A1
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WO
WIPO (PCT)
Prior art keywords
grounding
cap
screen
post
tap
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PCT/CN2014/001056
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English (en)
French (fr)
Inventor
李艳鹏
俞华
梁基重
陈昱同
王志鹏
Original Assignee
国家电网公司
国网山西省电力公司电力科学研究院
李艳鹏
俞华
梁基重
陈昱同
王志鹏
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Application filed by 国家电网公司, 国网山西省电力公司电力科学研究院, 李艳鹏, 俞华, 梁基重, 陈昱同, 王志鹏 filed Critical 国家电网公司
Publication of WO2015180001A1 publication Critical patent/WO2015180001A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66Connections with the terrestrial mass, e.g. earth plate, earth pin

Definitions

  • the utility model relates to the technical field of electric power construction equipment, in particular to a grounding device for a capacitive casing end screen.
  • the technical problem to be solved by the utility model is that the grounding device of the capacitive casing end screen needs to be disassembled every time the grounding state is switched, which is liable to cause the damage of the grounding device of the capacitive casing end screen.
  • the utility model provides a capacitive casing terminal screen grounding device, which comprises a final screen base, a grounding cap, a final screen lead, a final screen insulating sleeve, a final screen base and a grounding cap threaded connection, and a final screen.
  • the insulating sleeve is disposed in the inner hole of the bottom screen base, and the last screen lead penetrates into the final screen insulating sleeve, and the grounding cap is further provided with a grounding post, one end of the grounding pole protrudes from the grounding cap, and the other end is in contact with the end of the last screen lead Connected, and two insulating blocks are symmetrically disposed on the outer wall of the grounding post, and two grounding cap bumps are symmetrically disposed on the inner wall of the grounding cap.
  • the grounding cap bump is in contact with the outer wall of the grounding post, and the grounding cap is disposed between the grounding cap and the grounding post.
  • the end of the grounding post that is in contact with the end screen lead is provided with a groove, and the end screen lead and the bottom of the groove Contact connection.
  • a groove is arranged inside the groove, and the end screen lead is in contact with the bottom of the groove through the spring ring.
  • an insulating sealing ring is arranged between the grounding cap and the bottom screen base.
  • one end of the grounding post protruding from the grounding cap is provided with an insulating handle.
  • the capacitive casing end screen grounding device provided by the utility model has a grounding post inside the grounding cap, and the grounding post is connected to the grounding cap through the grounding post, and the outer wall of the grounding column is two Two insulating blocks are arranged symmetrically in the side.
  • the grounding column is rotated 90 degrees along the axis, the grounding state can be switched. It is not necessary to disassemble and operate conveniently, and the grounding device of the capacitive casing end screen is easily damaged due to multiple disassembly. The problem.
  • FIG. 1 is a schematic view showing the internal structure of a grounding device for a capacitive casing end screen of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1 of the present invention.
  • Figure 3 is a cross-sectional view of the grounding post of the present invention.
  • 1 the bottom screen base
  • 2 the grounding cap
  • 21 the grounding cap bump
  • 3 the grounding post
  • 31 the insulating block
  • 32 the insulating spacer
  • 33 the groove
  • 6 spring ring
  • 7 insulating sealing ring
  • 8 insulating bushing
  • 9 insulating handle.
  • a plurality means two or more unless otherwise stated; unless otherwise stated, “notched shape” means a shape other than a flush cross section.
  • the utility model provides a capacitive casing terminal screen grounding device, which comprises a final screen base 1, a grounding cap 2, a final screen lead 4, a final screen insulating sleeve 5, a grounding post 3 and an insulating bushing.
  • the bottom screen base 1 and the grounding cap 2 are screwed, and the last screen insulating sleeve 5 and the last screen lead 4 are all inside the grounding cap 2.
  • the last screen insulating sleeve 5 is placed in the inner hole of the bottom screen base 1, and the last screen The lead wire 4 passes through the last screen insulating sleeve 5 to achieve the function of fixing and is insulated from the grounding cap 2.
  • the grounding cap 2 is further provided with a grounding post 3, one end of which protrudes from the grounding cap 2 for connection with the test instrument; the other end is
  • the last screen lead 4 is in contact connection, and two insulating blocks 31 are symmetrically disposed on both sides of the outer wall of the end which is in contact with the last screen lead 4, and the two insulating blocks 31 are not too large or too small, and the grounding state can be conveniently switched by rotating 90 degrees.
  • grounding cap bumps 21 are symmetrically disposed on both sides of the inner wall of the grounding cap 2, and the grounding cap bumps 21 are in contact with the outer wall of the grounding post 3; in order to ensure that only the grounding cap bumps 21 and the grounding post 3 can be connected to the grounding, at the grounding
  • An insulating bushing 8 is disposed in the inner hole of the grounding cap 2 through which the column 3 passes, and is sleeved on the grounding post 3 to separate the grounding post 3 from the grounding cap 2.
  • the insulating bushing 8 can be placed outside the grounding cap 2 Side, the flange is preferably waterproof and insulating material to play a certain waterproof effect.
  • the grounding post 3 is arranged like a boss, and the boss, that is, the smaller radius end, protrudes from the grounding cap 2, between the upper wall of the grounding cap 2 and the larger end of the grounding post 3
  • the insulating spacer 32 is provided to prevent the grounding post from being pulled when the grounding post 3 is rotated, thereby causing the grounding cap 2 to be energized between the grounding post 3.
  • a groove 33 is disposed at one end of the grounding post 3 in contact with the end screen lead 4, and the last screen lead 4 is placed in the recess 33 to contact the bottom of the recess 33, and when the grounding post 3 is rotated, The final screen lead 4 is not easily disconnected from the grounding post 3, and can function to fix the final screen lead 4, so that the contact between the final screen lead 4 and the grounding post 3 is better.
  • a spring ring 6 is disposed in the groove 33, which is made of a good conductor material, and the outer ring is in good contact with the wall of the groove 33, and the last wire lead 4 passes through the spring ring 6 and the groove 33.
  • the bottom contact is connected, the side wall is in contact with the spring coil 6, and the last screen lead 4 is freely rotated in the spring coil 6, so that the end screen lead 4 is more stably connected to the grounding post 3, and the contact is better.
  • an insulating sealing ring 7 is disposed between the grounding cap 2 and the final screen base 1, which is placed on the bottom screen base 1, and is fixed to the grounding cap 2 and the bottom screen base when the grounding cap 2 is tightened. Between 1 and seal The function of waterproofing prevents the rusting of the grounding cap 2 and the thread of the bottom screen base 1 and affecting the insulation performance of the final screen insulating sleeve 5 after entering the water.
  • an insulating handle 9 is disposed at one end of the grounding post 3 extending from the grounding cap 2 to facilitate the rotation of the grounding post 3 for switching between grounded and ungrounded states, thereby improving the operability and safety of the device.
  • the last screen lead 4 is connected to the grounding cap 2 through the grounding post 3.
  • the two grounding cap bumps 21 are in contact with the grounding bars 3 without the outer walls of the insulating blocks 31, and are kept in a grounded state;
  • the grounding post 3 is rotated by 90 degrees so that the grounding cap bump 21 is in contact with the insulating block 31, and is in a non-grounded state.
  • the capacitive casing end screen grounding device provided by the utility model has a grounding post inside the grounding cap, and the grounding post is connected to the grounding cap through the grounding post, and two insulations are symmetrically arranged on both sides of the outer wall of the grounding post. Block, only need to rotate the grounding column 90 degrees along the axis to switch the grounding state, no need to disassemble, easy to operate, avoiding the damage caused by the multiple-disassembly of the capacitive casing end screen grounding device.

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Abstract

一种电容式套管末屏接地装置,包括:末屏底座(1)、接地帽(2)、末屏引线(4)、末屏绝缘套(5)、接地柱(3)和绝缘衬套(8),末屏底座和接地帽螺纹连接,末屏绝缘套设置在末屏底座的内孔中,末屏引线穿过末屏绝缘套,接地帽内部设有接地柱,接地柱一端伸出接地帽,另一端与末屏引线接触连接,接地柱外壁对称设置两个绝缘块(31),接地帽内壁对称设置两个接地帽凸块(21),接地帽凸块与接地柱外壁接触连接。通过接地柱使末屏引线与接地帽连接,以及在接地柱两侧对称设置两个绝缘块,使用时只需沿着轴心旋转接地柱就可以切换接地状态,无需拆卸,避免了由于多次拆卸而造成电容式套管末屏接地装置损坏。

Description

一种电容式套管末屏接地装置 技术领域
本实用新型涉及电力施工设备技术领域,尤其涉及一种电容式套管末屏接地装置。
背景技术
电力系统中许多电力设备都是容性设备,如高压套管、瓷套式电流互感器等设备,这些容性设备都设有末屏,在正常工作时要求末屏接地运行,在进行高压试验时,需要将末屏接地打开,将其引入试验仪器进行试验,但是,目前的电容式套管末屏接地装置主要有两种:一种靠带螺纹的末屏帽连接法兰接地,一种是靠螺栓固定在法兰上接地,两种末屏接地装置在试验时需要拆开连接或拧下接地末屏帽,然后切换接地状态,不但费时费力、操作不便,多次拆卸也易造成螺纹损坏,以致引起末屏接地不良事故。
因此,针对以上不足,需要提供一种在切换接地状态时无需拆卸且操作方便的电容式套管末屏接地装置。
实用新型内容
(一)要解决的技术问题
本实用新型要解决的技术问题是解决电容式套管末屏接地装置在每次切换接地状态时都需拆卸,易造成电容式套管末屏接地装置损坏的问题。
(二)技术方案
为了解决上述技术问题,本实用新型提供了一种电容式套管末屏接地装置,包括末屏底座、接地帽、末屏引线、末屏绝缘套,末屏底座和接地帽螺纹连接,末屏绝缘套套设于末屏底座内孔中,末屏引线穿入末屏绝缘套,所述接地帽内部还设有接地柱,所述接地柱一端伸出接地帽,另一端与末屏引线一端接触连接,且在接地柱外壁对称设置两个绝缘块,在接地帽内壁对称设置两个接地帽凸块,所述接地帽凸块与接地柱外壁接触连接,所述接地帽与接地柱之间设有绝缘衬套。
其中,所述接地柱与末屏引线接触的一端设有凹槽,所述末屏引线与凹槽底 部接触连接。
其中,所述凹槽内部设有弹簧圈,所述末屏引线穿过所述弹簧圈与凹槽底部接触连接。
其中,所述接地帽与末屏底座之间设有绝缘密封圈。
其中,所述接地柱伸出接地帽的一端设有绝缘手柄。
(三)有益效果
本实用新型的上述技术方案具有如下优点:本实用新型提供的电容式套管末屏接地装置,在接地帽内部设置接地柱,通过接地柱使末屏引线与接地帽连接,在接地柱外壁两侧对称设置两个绝缘块,使用时只需要沿轴心把接地柱旋转90度就可以切换接地状态,无需拆卸、操作方便,避免了因多次拆卸易造成电容式套管末屏接地装置损坏的问题。
附图说明
图1是本实用新型电容式套管末屏接地装置的内部结构示意图;
图2是本实用新型实图1的A-A剖视图;
图3是本实用新型接地柱的剖视图。
图中:1:末屏底座;2:接地帽;21:接地帽凸块;3:接地柱;31:绝缘块;32:绝缘垫片;33:凹槽;4、末屏引线;5:末屏绝缘套;6:弹簧圈;7:绝缘密封圈;8:绝缘衬套;9:绝缘手柄。
具体实施方式
为使本实用新型实施例的目的、技术方案和优点更加清楚,下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本实用新型的一部分实施例,而不是全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本实用新型保护的范围。
在本实用新型的描述中,除非另有说明,“多个”的含义是两个或两个以上;除非另有说明,“缺口状”的含义为除截面平齐外的形状。术语“上”、“下”、“左”、“右”、“内”、“外”、“前端”、“后端”、“头部”、“尾部”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实用新型和简化描述,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实用新型的限制。
如图1所示,本实用新型提供了一种电容式套管末屏接地装置,包括末屏底座1、接地帽2、末屏引线4、末屏绝缘套5、接地柱3和绝缘衬套8。
其中,末屏底座1和接地帽2螺纹连接,末屏绝缘套5和末屏引线4都在接地帽2内部,具体地,末屏绝缘套5放置在末屏底座1内孔中,末屏引线4穿过末屏绝缘套5,以达到固定和与接地帽2绝缘的作用,接地帽2内部还设有一个接地柱3,其一端伸出接地帽2,便于连接试验仪器;另一端与末屏引线4接触连接,且其与末屏引线4接触的这一端外壁两侧对称设置两个绝缘块31,且两绝缘块31不宜过大和过小,以旋转90度能方便切换接地状态为宜;接地帽2内壁两侧对称设置两个接地帽凸块21,接地帽凸块21与接地柱3的外壁接触连接;为了保证只有接地帽凸块21与接地柱3能连接通电,在接地柱3所穿过的接地帽2内孔中设置一个绝缘衬套8,其套在接地柱3上,把接地柱3与接地帽2隔开,绝缘衬套8可以在接地帽2外部设置翻边,翻边优选防水绝缘材料,以起到一定的防水作用;为了节省材料和使用方便,把接地柱3设置成类似凸台状,把凸台即半径较小的一端伸出接地帽2,在接地帽2内上壁和接地柱3半径较大一端之间设置绝缘垫片32,以防止旋转接地柱3时拉动接地柱而导致接地帽2与接地柱3之间通电。
如图1和图3所示,在接地柱3与末屏引线4接触的一端设置一个凹槽33,末屏引线4放置在凹槽33内与凹槽33底部接触,旋转接地柱3时,末屏引线4不易与接地柱3断开接触,可以起到固定末屏引线4的作用,使末屏引线4与接地柱3之间接触更好。
如图1和图2所示,在凹槽33内设置一个弹簧圈6,其选用良好的导体材料,外圈与凹槽33壁接触良好,末屏引线4穿过弹簧圈6与凹槽33底部接触连接,其侧壁与弹簧圈6接触,末屏引线4在弹簧圈6内自由转动,使末屏引线4与接地柱3连接更稳固、接触更良好。
如图1所示,在接地帽2与末屏底座1之间设置一个绝缘密封圈7,其放在末屏底座1上,在接地帽2旋紧时,固定在接地帽2与末屏底座1之间,起到密封 防水的作用,防止进水后,锈蚀接地帽2与末屏底座1的螺纹及影响末屏绝缘套5的绝缘性能。
如图上所示,在接地柱3伸出接地帽2的一端设置一个绝缘手柄9,以方便旋转接地柱3,进行接地和不接地状态之间的转换,提高装置的操作性和安全性。
使用时,末屏引线4通过接地柱3与接地帽2连接,正常运行状态下,两个接地帽凸块21与接地柱3没有设置绝缘块31的两侧外壁接触,保持接地状态;在高压试验时,把接地柱3旋转90度,使接地帽凸块21与绝缘块31接触,处于非接地在状态。
综上所述,本实用新型提供的电容式套管末屏接地装置,在接地帽内部设置接地柱,通过接地柱使末屏引线与接地帽连接,在接地柱外壁两侧对称设置两个绝缘块,使用时只需要沿轴心把接地柱90度就可以切换接地状态,无需拆卸、操作方便,避免了因多次拆卸易造成电容式套管末屏接地装置损坏的情况发生。
最后应说明的是:以上实施例仅用以说明本实用新型的技术方案,而非对其限制;尽管参照前述实施例对本实用新型进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本实用新型各实施例技术方案的精神和范围。

Claims (5)

  1. 一种电容式套管末屏接地装置,包括末屏底座(1)、接地帽(2)、末屏引线(4)和末屏绝缘套(5),末屏底座(1)和接地帽(2)螺纹连接,末屏绝缘套(5)套设于末屏底座(1)内孔中,末屏引线(4)穿过末屏绝缘套(5),其特征在于:所述接地帽(2)内部还设有接地柱(3),所述接地柱(3)一端伸出接地帽(2),另一端与末屏引线(4)一端接触连接,且在接地柱(3)外壁对称设置两个绝缘块(31),在接地帽(2)内壁对称设置两个接地帽凸块(21),所述接地帽凸块(21)与接地柱(3)外壁接触连接,所述接地帽(2)与接地柱(3)之间设有绝缘衬套(8)。
  2. 根据权利要求1所述的电容式套管末屏接地装置,其特征在于:所述接地柱(3)与末屏引线(4)接触的一端设有凹槽(33),所述末屏引线(4)与凹槽(33)底部接触连接。
  3. 根据权利要求2所述的电容式套管末屏接地装置,其特征在于:所述凹槽(33)内部设有弹簧圈(6),所述末屏引线(4)穿过所述弹簧圈(6)与凹槽(33)底部接触连接。
  4. 根据权利要求1所述的电容式套管末屏接地装置,其特征在于:所述接地帽(2)与末屏底座(1)之间设有绝缘密封圈(7)。
  5. 根据权利要求1所述的电容式套管末屏接地装置,其特征在于:所述接地柱(3)伸出接地帽(2)的一端设有绝缘手柄(9)。
PCT/CN2014/001056 2014-05-29 2014-11-27 一种电容式套管末屏接地装置 WO2015180001A1 (zh)

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CN109817432A (zh) * 2019-04-01 2019-05-28 江苏神马电力股份有限公司 末屏接头以及变压器套管
EP3544028A1 (en) 2018-03-22 2019-09-25 ABB Schweiz AG A bushing with a tap assembly
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CN109817432A (zh) * 2019-04-01 2019-05-28 江苏神马电力股份有限公司 末屏接头以及变压器套管
WO2023029128A1 (zh) * 2021-09-06 2023-03-09 中国南方电网有限责任公司超高压输电公司贵阳局 一种具有双点接地的末屏端子
CN117612810A (zh) * 2024-01-22 2024-02-27 搏世因(北京)高压电气有限公司 一种电容式套管的爬伞裙结构以及法兰安装方法
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