WO2018086561A1 - Gas-insulated bus grounding component, grounding device and gas-insulated switch cabinet - Google Patents

Gas-insulated bus grounding component, grounding device and gas-insulated switch cabinet Download PDF

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Publication number
WO2018086561A1
WO2018086561A1 PCT/CN2017/110208 CN2017110208W WO2018086561A1 WO 2018086561 A1 WO2018086561 A1 WO 2018086561A1 CN 2017110208 W CN2017110208 W CN 2017110208W WO 2018086561 A1 WO2018086561 A1 WO 2018086561A1
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Prior art keywords
contact
grounding
busbar
hole
phase
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PCT/CN2017/110208
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French (fr)
Chinese (zh)
Inventor
邬建刚
陈慎言
谭燕
顾晓冬
张佳飞
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上海天灵开关厂有限公司
平高集团有限公司
国家电网公司
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Priority to CN201610996128.7A priority Critical patent/CN106384961B/en
Priority to CN201610996128.7 priority
Application filed by 上海天灵开关厂有限公司, 平高集团有限公司, 国家电网公司 filed Critical 上海天灵开关厂有限公司
Publication of WO2018086561A1 publication Critical patent/WO2018086561A1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02Arrangements of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035Gas-insulated switchgear
    • H02B13/075Earthing arrangements

Abstract

A quick gas-insulated bus grounding device, comprising: a gas filled compartment body (30) comprising a gas filled compartment (11) and a pressure relief channel (13), a pressure relief device (12) being provided between the pressure relief channel (13) and the gas filled compartment (11), and a self-sealing valve (14) being provided on the gas filled compartment (11); six bus bushings (1) mounted on side plates of the gas filled compartment (11), two bus bushings (1) forming a phase and being opposite to each other; a three-phase main busbar (7) located in the gas filled compartment (11), each phase of main busbar (7) being mounted between two bus bushings (1) of corresponding phase and being connected to a main bus of an external switch cabinet by means of two bus bushings (1) of the phase; a three-phase grounding component (3) located in the gas filled compartment (11), an upper end of each phase of grounding component (3) being connected to the main busbar (7) of corresponding phase, and a lower end of a guide rod (4) in each phase of grounding component (3) being supported on a side plate in the gas filled compartment (11); and a driving mechanism (15) configured to drive the three-phase grounding component (3) to achieve grounding on/off. The device satisfies reliable grounding of a main bus of a gas-insulated switch cabinet, and has strong closing capability, small volume and high safety.

Description

一种气体绝缘母线接地组件、接地装置及气体绝缘开关柜Gas insulated busbar grounding component, grounding device and gas insulated switchgear 技术领域Technical field
本发明涉及气体绝缘开关柜技术领域,特别涉及一种气体绝缘母线接地组件、接地装置及气体绝缘开关柜。The invention relates to the technical field of gas insulated switchgear, in particular to a gas insulated busbar grounding component, a grounding device and a gas insulated switchgear.
背景技术Background technique
接地开关为开关柜的重要组成部件,通常安装在开关柜内部,供电线路或设备出现故障以及正常检修时,接地开关可合闸,实现主母线或者分支母线的接地。The grounding switch is an important component of the switchgear. It is usually installed inside the switchgear. When the power supply line or equipment fails and the normal maintenance is over, the grounding switch can be closed to achieve grounding of the main busbar or the branch busbar.
气体绝缘开关柜是中压开关领域的高新技术产品,电压等级一般在12~40.5kV,短路电流耐受能力一般在40kA以下,它将断路器、隔离开关、接地开关等高压元件装在密封的金属柜体中,内充低压力的SF6气体或其他绝缘气体作为绝缘介质,实现与外部环境的隔离,提高开关柜运行的稳定性。Gas insulated switchgear is a high-tech product in the field of medium voltage switch. The voltage level is generally 12~40.5kV, and the short-circuit current withstand capability is generally below 40kA. It is equipped with high-voltage components such as circuit breakers, disconnectors and grounding switches. In the metal cabinet, SF6 gas or other insulating gas filled with low pressure is used as an insulating medium to achieve isolation from the external environment and improve the stability of the operation of the switchgear.
现有气体绝缘接地开关装置一般为旋转刀闸式结构,采用前中后布置方式,一般应用于12kV电压等级开关柜,短路关合能力在25kA以下。接地装置一般设置有安装支架,用于与母线连接的合闸触座,与旋转主轴连接的接地刀片,高压部件通过支撑绝缘子对地绝缘,通过弹簧机构驱动旋转主轴快速动作,实现接地开关的合闸。该结构能够正确执行接地所需的所有功能,但因其采用刀闸结构,接地刀片一般为扁铜排,端部存在尖端或者较小的圆角,导致断口电场分布较差,易引起尖端放电现象。在关合过程中,如系统存在预置短路,触头运动过程更容易产生预击穿,对普通铜质刀闸产生电弧烧蚀,对接地开关造成严重损伤。接地开关如安装于气体绝缘开关柜内部,无法及时检修,带来安全隐患。 The existing gas insulated earthing switch device is generally a rotary knife gate structure, which adopts a front, middle and rear arrangement, and is generally applied to a 12 kV voltage class switchgear, and the short circuit closing capability is below 25 kA. The grounding device is generally provided with a mounting bracket, a closing contact for connecting with the busbar, a grounding blade connected to the rotating spindle, a high-voltage component is insulated from the ground through the supporting insulator, and a rotating mechanism is driven by a spring mechanism to quickly act to realize the grounding switch. brake. This structure can correctly perform all the functions required for grounding, but because of its knife-gate structure, the grounding blade is generally a flat copper bar with a tip or a small rounded corner at the end, resulting in poor electric field distribution of the fracture and easy to cause tip discharge. phenomenon. In the closing process, if there is a preset short circuit in the system, the contact movement process is more likely to produce pre-breakdown, causing arc ablation to the ordinary copper knife gate, causing serious damage to the grounding switch. If the earthing switch is installed inside the gas-insulated switchgear, it cannot be repaired in time, posing a safety hazard.
现有气体绝缘直动式三工位开关可实现线路的接地功能,直动式三工位开关一般采用丝杆驱动动触头前后运动,实现合闸、分闸、接地功能。接地合闸过程采用慢速动作,因此,此类直动式三工位开关无法实现接地短路关合功能,需要配套的真空灭弧室合闸实现接地关合,配套使用的元器件较多,结构及联锁装置较为复杂,成本较高。The existing gas-insulated direct-acting three-position switch can realize the grounding function of the line. The direct-acting three-position switch generally uses the screw to drive the moving contact to move back and forth to realize the function of closing, opening and grounding. The grounding closing process adopts a slow speed action. Therefore, such a direct-acting three-position switch cannot realize the grounding short-circuit closing function, and the corresponding vacuum interrupter closing is required to achieve the grounding closing, and more components are used. The structure and interlocking device are complicated and costly.
发明内容Summary of the invention
本发明所要解决的技术问题在于针对目前接地开关绝缘能力弱,无法满足40.5kV电压等级的应用,体积大,无法与紧凑型气体绝缘开关柜匹配,关合能力弱,安全性不高,无法实现免维护的缺点,提供一种能够与气体绝缘开关柜主母线连接的气体绝缘母线快速接地装置,实现气体绝缘开关柜主母线的可靠接地功能。本发明基于接地开关的功能进行全新设计,实现接地开关装置的气体绝缘,并对接地开关进行全新结构设计,满足高绝缘能力以及高接地关合能力要求,实现免维护设计,满足高电压等级的应用。The technical problem to be solved by the present invention is that the current grounding switch has weak insulation capability and cannot meet the application of the 40.5 kV voltage level. The volume is large, and it cannot be matched with the compact gas insulated switchgear. The closing ability is weak and the safety is not high, which cannot be realized. The maintenance-free shortcoming provides a gas-insulated busbar quick-grounding device that can be connected to the main busbar of the gas-insulated switchgear to realize the reliable grounding function of the main busbar of the gas-insulated switchgear. The invention is based on the function of the grounding switch, and realizes the gas insulation of the grounding switch device, and performs a new structural design on the grounding switch to meet the requirements of high insulation capability and high grounding closing capability, realizes maintenance-free design and meets high voltage level. application.
本发明所要解决的技术问题可以通过以下技术方案来实现:The technical problem to be solved by the present invention can be achieved by the following technical solutions:
一种气体绝缘母线接地组件,所述接地组件包括静触头、动触头、触管、绝缘筒以及触座,所述动触头固定在所述触管顶端上并与所述触管电气连接,所述绝缘筒的上端与所述静触头固定连接,所述绝缘筒的下端与所述触座固定连接,所述绝缘筒内具有一内孔,所述触座具有与所述绝缘筒的内孔同轴的中心孔,所述触管穿过所述触座的中心孔插入到所述绝缘筒的内孔中,所述触座通过设置在所述触座的中心孔孔壁上的触指与所述触管电气连接;接地合闸时,所述触管向上移动带动所述动触头与所述静触头接触,接地分闸时,所述触管向下移动带动所述动触头与所述静触头分离。A gas insulated busbar grounding component, the grounding component comprising a static contact, a movable contact, a contact pipe, an insulation cylinder and a contact seat, the movable contact being fixed on the top end of the contact pipe and electrically connected to the contact pipe Connecting, the upper end of the insulating cylinder is fixedly connected to the static contact, the lower end of the insulating cylinder is fixedly connected with the contact seat, the insulating cylinder has an inner hole therein, and the contact seat has the insulation a central hole coaxial with the inner bore of the barrel, the contact tube being inserted into the inner bore of the insulating barrel through a central hole of the contact seat, the contact seat passing through a central hole wall of the contact seat The upper contact finger is electrically connected to the contact pipe; when the grounding is closed, the contact pipe moves upward to bring the movable contact into contact with the static contact, and when the ground is opened, the contact pipe moves downward The movable contact is separated from the stationary contact.
进一步地,所述触管上还安装有一导向环,所述导向环的外周缘与所述绝缘筒的内孔壁密封滑动抵接,所述导向环与所述触座之间的这部分绝缘筒内孔 构成一压力空间,所述压力空间与所述绝缘筒外的绝缘气体之间设置有灭弧气流通道,当所述接地组件接地合闸时,所述绝缘筒外的绝缘气体通过唯一的灭弧气流通道,从动触头流向压力空间,在动触头及静触头间产生灭弧气体的流动。Further, a guide ring is further mounted on the contact tube, and an outer circumference of the guide ring is sealingly abutted against an inner hole wall of the insulation tube, and the portion between the guide ring and the contact seat is insulated. Inner bore Forming a pressure space, an arc extinguishing air passage is disposed between the pressure space and the insulating gas outside the insulating cylinder, and when the grounding component is grounded, the insulating gas outside the insulating cylinder passes through a unique arc extinguishing The air flow channel and the driven contact flow to the pressure space, and the flow of the arc extinguishing gas is generated between the movable contact and the static contact.
进一步地,所述静触头上设置有换气孔,所述导向环与所述静触头之间的这部分绝缘筒内孔构成的空间通过所述换气孔与所述绝缘筒外的绝缘气体连通。Further, a ventilation hole is disposed on the static contact, and a space formed by the inner hole of the portion of the insulation tube between the guide ring and the static contact passes through the ventilation hole and the outside of the insulation tube Insulating gas is connected.
进一步地,所述触管上开设有至少一个以上的径向通孔;所述动触头通过一连接件与所述触管固定电气连接,所述连接件上开设一中心通孔,所述连接件上的中心通孔与所述触管上的径向通孔连通,所述触管上的径向通孔与所述压力空间连通。Further, the contact tube is provided with at least one radial through hole; the movable contact is fixedly electrically connected to the contact tube through a connecting member, and a central through hole is defined in the connecting member, A central through hole in the connector communicates with a radial through hole on the contact tube, and a radial through hole on the contact tube communicates with the pressure space.
进一步地,所述连接件为螺钉。Further, the connecting member is a screw.
进一步地,所述动触头为自力型触头,触指间张开一定间距的槽口。Further, the movable contact is a self-supporting contact, and a notch of a certain distance is opened between the fingers.
进一步地,所述接地组件还包括屏蔽罩,所述屏蔽罩罩设在所述静触头以及绝缘筒中上部的外围。Further, the grounding assembly further includes a shield cover disposed on a periphery of the upper portion of the stationary contact and the insulating barrel.
进一步地,所述接地组件包括短接母排,所述短接母排固定在所述触座上并与所述触座电气连接。Further, the grounding assembly includes a shorting busbar, and the shorting busbar is fixed to the contact and electrically connected to the contact.
进一步地,所述接地组件还包括导杆,所述触管的内孔套在所述导杆上,所述触管沿所述导杆上下移动。Further, the grounding assembly further includes a guiding rod, an inner hole of the contact tube is sleeved on the guiding rod, and the contact tube moves up and down along the guiding rod.
本发明还提供一种气体绝缘母线快速接地装置,所述接地装置包括上述任一项所述接地组件,以及还包括:The present invention also provides a gas insulated busbar quick grounding device, the grounding device comprising the grounding component of any of the above, and further comprising:
一充气隔室本体,所述充气隔室本体包括充气隔室,在所述充气隔室上设置有充气接头,在所述充气接头上安装有一自封阀;An inflatable compartment body, the inflatable compartment body comprising an inflation compartment, on which an inflation joint is disposed, and a self-sealing valve is mounted on the inflation joint;
安装在所述充气隔室两相对侧板上的六个母线套管;每两个母线套管为一 相,相对设置;Six busbar bushings mounted on opposite side panels of the inflatable compartment; one for each of the two busbar bushings Phase, relative setting;
位于所述充气隔室内的三相主母排,每相主母排安装在对应相的两个母线套管之间,每相主母排通过该相的两个母线套管与外部开关柜主母线连接;a three-phase main busbar located in the air-filled compartment, each phase of the main busbar is installed between two busbar bushings of the corresponding phase, and each phase of the main busbar passes through the two busbar bushings of the phase and the external switchgear main Busbar connection;
所述接地组件为三相接地组件,每相接地组件的上端与对应相的主母排连接;The grounding component is a three-phase grounding component, and an upper end of each phase grounding component is connected to a main busbar of a corresponding phase;
进一步地,所述接地装置包括驱动三相接地组件实现接地合闸和接地分闸的驱动机构,所述驱动机构包括:操作机构、主轴以及拐臂,所述操作机构安装在所述充气隔室外,所述主轴由所述操作机构驱动转动,所述主轴插入所述充气隔室内,所述拐臂安装在所述主轴上,所述主轴同步带动拐臂转动,拐臂通过一动杆与所述触管铰接,拐臂通过动杆带动对应的触管上下运动。Further, the grounding device includes a driving mechanism for driving a three-phase grounding component to achieve a grounding closing and a grounding opening, the driving mechanism comprising: an operating mechanism, a main shaft and a cranking arm, and the operating mechanism is mounted on the airing partition Outdoorly, the main shaft is driven to rotate by the operating mechanism, the main shaft is inserted into the air-filled compartment, the arm is mounted on the main shaft, and the main shaft synchronously drives the arm to rotate, and the arm passes through a moving rod and a The contact pipe is hinged, and the arm moves the corresponding contact pipe up and down by the moving rod.
进一步地,所述充气隔室本体包括泄压装置,所述泄压装置设置于泄压通道与充气隔室之间,所述泄压装置设置于所述充气隔室的顶部或底部。Further, the inflatable compartment body includes a pressure relief device disposed between the pressure relief passage and the inflation compartment, the pressure relief device being disposed at a top or bottom of the inflation compartment.
本发明提供的另一实施例的气体绝缘母线快速接地装置,包括:A gas insulated busbar quick grounding device according to another embodiment of the present invention includes:
一充气隔室本体,所述充气隔室本体包括充气隔室和泄压通道,所述泄压通道与所述充气隔室之间设置有泄压装置,在所述充气隔室上设置有充气接头,在所述充气接头上安装有一自封阀;An inflatable compartment body, the inflatable compartment body including an inflation compartment and a pressure relief passage, a pressure relief device disposed between the pressure relief passage and the inflation compartment, and an inflation device disposed on the inflation compartment a joint on which a self-sealing valve is mounted;
安装在所述充气隔室两相对侧板上的六个母线套管;每两个母线套管为一相,相对设置;Six busbar bushings mounted on opposite side plates of the inflatable compartment; each of the two busbar bushings is a phase, oppositely disposed;
位于所述充气隔室内三相的主母排,每相主母排安装在对应相的两个母线套管之间,每相主母排通过该相的两个母线套管与外部开关柜主母线连接;a main busbar located in the three-phase compartment of the air-filled compartment, each phase of the main busbar is installed between two busbar bushings of the corresponding phase, and each phase of the main busbar passes through the two busbar bushings of the phase and the external switchgear main Busbar connection;
位于所述充气隔室内的三相接地组件,每相接地组件的上端与对应相的主母排连接,每相接地组件中的导杆下端支撑在所述充气隔室中的一侧板连接;a three-phase grounding assembly located in the air-filled compartment, the upper end of each phase-grounding component is connected to the main busbar of the corresponding phase, and the lower end of the guiding rod in each phase-cored component is supported on one side of the inflatable compartment Board connection
一驱动三相接地组件实现接地合闸和接地分闸的驱动机构。A drive mechanism that drives a three-phase grounding assembly to achieve grounding and grounding tripping.
在本发明的一个优选实施例中,所述充气接头上安装有自封阀。 In a preferred embodiment of the invention, a self-sealing valve is mounted on the inflatable joint.
在本发明的一个优选实施例中,每相接地组件还包括:In a preferred embodiment of the invention, each phase-to-phase component further comprises:
一与所述主母排固定连接的静触头;a static contact fixedly connected to the main busbar;
一上端与所述静触头固定连接的绝缘筒,所述绝缘筒内具有一内孔;An insulating cylinder fixedly connected to the static contact at the upper end, the insulating cylinder has an inner hole therein;
一固定在所述绝缘筒下端的触座,所述触座具有与所述绝缘筒的内孔同轴的中心孔,所述导杆的中上部穿过所述触座的中心孔插入到所述绝缘筒的内孔中;a contact seat fixed to a lower end of the insulation barrel, the contact seat having a center hole coaxial with an inner hole of the insulation barrel, and a middle upper portion of the guide rod is inserted into a center hole of the contact seat In the inner bore of the insulating cylinder;
一触管,所述触管具有一用以套设在所述导杆上的内孔,所述触管的内孔套在所述导杆上;所述触管也穿过所述触座的中心孔插入到所述绝缘筒的内孔中;所述触座通过设置在所述触座的中心孔孔壁上的触指与所述触管电气连接;所述触管与所述驱动机构驱动连接,由所述驱动机构带动沿所述导杆上下移动;a contact tube having an inner hole for being sleeved on the guide rod, an inner hole of the contact tube is sleeved on the guide rod; the contact tube also passes through the contact seat a central hole inserted into the inner bore of the insulating cylinder; the contact is electrically connected to the contact tube by a finger disposed on a wall of the central bore of the contact; the contact and the drive a mechanism driving connection, driven by the driving mechanism to move up and down along the guiding rod;
固定在所述触管顶端上并与所述触管电气连接的动触头,接地合闸时,所述触管向上移动带动动触头与所述静触头接触,接地分闸时,所述触管向下移动带动所述动触头与所述静触头分离;a movable contact fixed to the top end of the contact pipe and electrically connected to the contact pipe, when the grounding is closed, the contact pipe moves upward to bring the movable contact into contact with the static contact, and when the ground is opened, the ground contact The downward movement of the contact pipe drives the movable contact to be separated from the static contact;
固定在所述触座上并与所述触座电气连接的短接母排,所述短接母排与所述充气隔室的侧板电气连接。A shorting busbar fixed to the contact and electrically connected to the contact, the shorting busbar being electrically connected to a side panel of the inflatable compartment.
在本发明的一个优选实施例中,在所述静触头上设置有一屏蔽罩,所述屏蔽罩罩在所述静触头以及绝缘筒中上部的外围。In a preferred embodiment of the present invention, a shield cover is disposed on the stationary contact, and the shield covers the periphery of the upper portion of the stationary contact and the insulating barrel.
在本发明的一个优选实施例中,在所述触管上还安装有一导向环,所述导向环的外周缘与所述绝缘筒的内孔壁滑动接触。In a preferred embodiment of the invention, a guide ring is further mounted on the contact tube, and an outer circumference of the guide ring is in sliding contact with an inner hole wall of the insulating barrel.
在本发明的一个优选实施例中,在所述导向环的外周缘设置有第一密封圈,所述第一密封圈用以密封所述导向环的外周缘与所述绝缘筒的内孔壁之间的接触间隙。In a preferred embodiment of the present invention, a first sealing ring is disposed on an outer circumference of the guiding ring, and the first sealing ring is for sealing an outer circumference of the guiding ring and an inner hole wall of the insulating barrel Contact gap between.
在本发明的一个优选实施例中,在所述触座的中心孔的孔壁上设置有第二密封圈,所述第二密封圈用以密封所述触座的中心孔的孔壁与所述触管的外周 壁之间的接触间隙。In a preferred embodiment of the present invention, a second sealing ring is disposed on a hole wall of the center hole of the contact seat, and the second sealing ring is used for sealing a hole wall of the center hole of the contact seat. The outer circumference of the contact Contact gap between the walls.
在本发明的一个优选实施例中,在所述触管的内孔的孔壁上设置有第三密封圈,所述第三密封圈用以密封所述触管的内孔与所述导杆外周面之间的间隙。In a preferred embodiment of the present invention, a third sealing ring is disposed on the hole wall of the inner hole of the contact pipe, and the third sealing ring is used for sealing the inner hole of the contact pipe and the guiding rod The gap between the outer peripheral faces.
在本发明的一个优选实施例中,所述动触头通过一螺钉安装在所述触管上,在所述螺钉上开设有一中心通孔,在所述触管上开设有至少一个以上的径向通孔,所述螺钉上的中心通孔与所述触管上的径向通孔连通;所述导向环与所述触座之间的这部分绝缘筒内孔构成一压力空间,所述触管上的径向通孔与所述压力空间连通;在所述静触头上设置有换气孔。In a preferred embodiment of the present invention, the movable contact is mounted on the contact tube by a screw, a central through hole is defined in the screw, and at least one diameter is opened on the contact tube. a central through hole on the screw is communicated with a radial through hole on the contact pipe; the inner hole of the insulating cylinder between the guide ring and the contact seat constitutes a pressure space, A radial through hole on the contact pipe communicates with the pressure space; a ventilation hole is disposed on the static contact.
在本发明的一个优选实施例中,所述动触头为自力型触头,触指间张开一定间距的槽口。In a preferred embodiment of the present invention, the movable contact is a self-supporting contact, and a notch of a certain distance is opened between the fingers.
在本发明的一个优选实施例中,所述泄压装置设置于所述充气隔室的顶部或底部。In a preferred embodiment of the invention, the pressure relief device is disposed at the top or bottom of the inflatable compartment.
在本发明的一个优选实施例中,所述驱动机构包括:In a preferred embodiment of the invention, the drive mechanism comprises:
一安装在所述充气隔室外的操作机构;An operating mechanism installed outside the inflatable compartment;
一由所述操作机构驱动转动的主轴,所述主轴插入所述充气隔室内;a spindle driven by the operating mechanism, the spindle being inserted into the inflation compartment;
沿所述主轴的轴向间隔安装在所述主轴上的三块拐臂,所述主轴同步带动三块拐臂转动,每一拐臂通过一动杆与所述触筒铰接,每一拐臂通过动杆带动对应的触筒上下移动。Three arms are mounted on the main shaft at an axial interval of the main shaft, and the main shaft synchronously drives three arm rotations, and each of the armes is hinged to the contact cylinder through a moving rod, and each of the arm passes The moving rod drives the corresponding contact cylinder to move up and down.
本发明为实现一种满足气体绝缘开关柜主母线可靠接地,关合能力强、体积小、安全性高的气体绝缘母线接地装置,其基本原理是将连通主母线的母线套管、主母排、接地组件及传动系统密封于充气隔室内,接地组件安装于连接母线套管的主母排上,通过接地组件的快速关合功能实现主母线的可靠接地。The invention realizes a gas insulated busbar grounding device which satisfies the reliable grounding of the main busbar of the gas insulated switchgear, has strong sealing ability, small volume and high safety, and the basic principle is to connect the busbar bushing and the main busbar of the main busbar. The grounding component and the transmission system are sealed in the air-filled compartment, and the grounding component is mounted on the main busbar connected to the busbar bushing, and the grounding component is quickly closed to realize reliable grounding of the main busbar.
本发明通过密封安装于金属壳体内的母线套管,实现与外部气体绝缘开关柜的拼柜连接,母线套管型号规格可更换,满足与不同电压及电流等级开关柜主 母线的拼接;接地组件通过主母排与母线套管固定连接,与拐臂活动连接,安装于充气隔室的内部;操作机构安装于充气隔室的外部,与驱动主轴密封连接,可操作接地组件快速接地及取消接地,实现本发明的母线接地功能。泄压装置设置于充气隔室的顶部或底部,实现故障条件下充气隔室内高压气体定向排放至下部的泄压通道,保证人员操作安全;金属壳体上设置有自封阀,可充入高性能绝缘气体,实现接地装置的气体绝缘及环境隔离。The invention realizes the connection with the external gas insulated switchgear cabinet by sealing the busbar bushing installed in the metal casing, and the model specification of the busbar bushing can be replaced, and meets the switchgear with different voltage and current levels. The splicing of the busbar; the grounding component is fixedly connected to the busbar bushing through the main busbar, and is movably connected with the arm arm and installed inside the venting compartment; the operating mechanism is installed outside the venting compartment, and is sealedly connected with the driving spindle, and can be grounded. The component is quickly grounded and grounded to achieve the busbar grounding function of the present invention. The pressure relief device is arranged at the top or bottom of the gas-filled compartment, and the high-pressure gas in the gas-filled compartment is discharged to the lower pressure relief passage under the fault condition to ensure the safety of personnel operation; the metal casing is provided with a self-sealing valve, which can be filled with high performance. Insulating gas to achieve gas insulation and environmental isolation of the grounding device.
本发明气体绝缘母线接地装置的高压部件全部密封安装于充气隔室内,包括通过法兰安装于金属壳体内部的母线套管,接地组件通过连通母线套管的主母排进行固定安装,接地组件的触管与在拐臂内滑动的动杆活动连接,驱动主轴本体穿装于传动拐臂内孔并可与拐臂同步转动,导杆穿装于接地组件的触管内孔并垂直安装于支架上,用于对接地组件的触管进行导向,支架通过支撑件与金属壳体固定安装,保证导杆安装强度。The high-voltage components of the gas insulated busbar grounding device of the present invention are all sealed and installed in the air-filled compartment, including a busbar bushing installed inside the metal casing through a flange, and the grounding component is fixedly mounted through the main busbar connecting the busbar bushing, the grounding component The contact tube is movably connected with the moving rod sliding in the arm, and the driving main shaft body is inserted into the inner hole of the driving arm and can rotate synchronously with the arm. The guiding rod is inserted into the inner hole of the contact unit of the grounding component and vertically mounted on the bracket. The upper part is used for guiding the contact tube of the grounding component, and the bracket is fixedly mounted by the support member and the metal shell to ensure the installation strength of the guide rod.
本发明的接地组件包括用于绝缘及支撑的圆管形绝缘筒,绝缘筒两端设置有螺纹,静触头及触座安装于绝缘筒两端,其中静触头设置有换气孔,用于接地组件灭弧介质的气体交换;触座内孔设置有触指及密封圈,触管通过触座内孔穿装于绝缘筒内,通过触座内孔的触指导电,通过密封圈实现气体动密封;触管主体为圆管形结构,与动触头连接的上端设置有径向通孔,径向通孔与固定动触头的螺钉中的中心通孔连通;触管下端设置有密封圈,与穿装于触管内孔的导杆配合,用于实现运动导向及气体动密封;动触头通过螺钉与触管固定连接,并固定安装用于导向动触头的导向环,其中螺钉中心设置为通孔,用于气体连通;导向环外圆设置有密封槽,用于安装密封圈,实现运动导向及气体动密封;触管、导向环及触座与绝缘筒的密封配合可在绝缘筒内形成密封空间,当触管从分闸位置向合闸位置快速运动过程中,可在密封空间内形成负压,形成气体流动,可冷却触头关合过程中的预击穿电弧,降低触头烧损程度;短接 母排设置于接地装置下端,通过螺母与触座固定安装,实现相间的短接,用于承载短路电流;屏蔽罩设置于接地装置上端,绝缘筒外侧,与静触头固定安装,用于高压侧静触头的电场屏蔽,在不改变接地组件主体结构的基础上,可通过调整屏蔽罩的外形尺寸,达到控制接地组件高压侧电场强度的效果,实现不同电压等级接地开关装置的应用;触管下端设置安装孔,用于与拐臂内的动杆连接,接受机构输出力矩,实现触管上的动触头在接地装置内上下运动,完成接地装置的合分闸操作。The grounding component of the invention comprises a circular tubular insulating cylinder for insulation and support, the two ends of the insulating cylinder are provided with threads, the static contact and the contact seat are installed at two ends of the insulating cylinder, wherein the static contact is provided with a ventilation hole, The gas exchange of the arc extinguishing medium of the grounding component; the inner hole of the contact seat is provided with a finger and a sealing ring, and the contact pipe is inserted into the insulating cylinder through the inner hole of the contact seat, and the contact hole of the inner hole of the contact seat is passed through the sealing ring. The gas dynamic seal; the main body of the contact pipe has a circular tubular structure, and the upper end connected to the movable contact is provided with a radial through hole, and the radial through hole communicates with the central through hole in the screw of the fixed moving contact; the lower end of the contact pipe is provided with The sealing ring cooperates with a guide rod that is worn in the inner hole of the contact tube for realizing the motion guiding and the gas dynamic sealing; the moving contact is fixedly connected with the contact tube through the screw, and the guiding ring for guiding the moving contact is fixedly mounted, wherein The center of the screw is set as a through hole for gas communication; the outer ring of the guide ring is provided with a sealing groove for installing a sealing ring to realize motion guiding and gas dynamic sealing; the sealing pipe of the contact pipe, the guiding ring and the contact seat and the insulating cylinder can be In the shape of the insulation cylinder The sealing space, when the contact pipe moves rapidly from the opening position to the closing position, can form a negative pressure in the sealed space to form a gas flow, which can cool the pre-breaking arc during the closing process of the contact, and reduce the burning of the contact Degree of damage The busbar is disposed at the lower end of the grounding device, and is fixedly mounted by the nut and the contact seat to realize short circuit between the phases for carrying short-circuit current; the shield cover is disposed at the upper end of the grounding device, outside the insulating cylinder, and is fixedly mounted with the static contact for high voltage The electric field shielding of the side static contact can improve the electric field strength of the high voltage side of the grounding component by adjusting the outer dimensions of the shielding cover without changing the main structure of the grounding component, and realize the application of the grounding switch device with different voltage levels; The lower end of the tube is provided with a mounting hole for connecting with the moving rod in the arm, and receiving the output torque of the mechanism, so that the moving contact on the contact tube moves up and down in the grounding device to complete the opening and closing operation of the grounding device.
本发明对主母线接地装置进行全新设计,采用金属封闭、气体密封及定向泄压结构。接地装置密封安装于独立的金属气室内,可充入绝缘气体实现气体绝缘,设置有专用泄压装置及泄压通道,使用安全性大幅提高;主母线接地装置采用直动方式,同轴电场设计结构,提高断口绝缘能力,满足高电压等级气体绝缘开关柜的使用;接地部件及母线连接装置设置于密封的金属壳体内,母线连接装置可更换,满足不同规格气体绝缘开关柜的主母线接地功能;接地装置动、静触头端部设置耐电弧材料,触头接触位置设计气流场,关合预击穿电流可通过气流场冷却,降低动、静触头的烧损,实现母线接地装置的免维护设计。The invention completely designs the main busbar grounding device, adopts metal sealing, gas sealing and directional pressure relief structure. The grounding device is sealed and installed in a separate metal gas chamber, which can be filled with insulating gas to achieve gas insulation. A special pressure relief device and a pressure relief channel are provided, and the safety of use is greatly improved; the main bus grounding device adopts a direct motion mode, and the coaxial electric field design Structure, improve the insulation capacity of the fracture, meet the use of high-voltage grade gas-insulated switchgear; the grounding component and the busbar connection device are installed in the sealed metal casing, and the busbar connection device can be replaced to meet the main busbar grounding function of the gas insulated switchgear with different specifications. The grounding device is provided with arc-proof material at the end of the moving and stationary contacts, and the airflow field is designed at the contact position of the contact. The pre-breakdown current can be cooled by the airflow field to reduce the burning of the moving and static contacts, and the busbar grounding device is realized. Maintenance free design.
附图说明DRAWINGS
图1本发明的结构示意图。Figure 1 is a schematic view showing the structure of the present invention.
图2本发明的侧视图。Figure 2 is a side view of the invention.
图3本发明的接地组件结构示意图。Figure 3 is a schematic view showing the structure of the grounding assembly of the present invention.
图4本发明动作关系示意图。Figure 4 is a schematic diagram of the action relationship of the present invention.
具体实施方式detailed description
本发明的技术手段,创作特征、达成目的与功效易于明白了解,下面结合图示(图1、图2、图3、图4),进一步闸述本发明: The technical means of the present invention, the creative features, the achievement of the purpose and the effect are easy to understand, and the following description is further described in conjunction with the drawings (Fig. 1, Fig. 2, Fig. 3, Fig. 4):
本发明的一种气体绝缘母线接地装置,可通过如下结构实现,具体结构包括金属壳体40、泄压通道13、泄压装置12、母线套管1、主母排7、驱动机构15以及气体绝缘母线接地组件。A gas insulated busbar grounding device of the present invention can be realized by a structure including a metal casing 40, a pressure relief passage 13, a pressure relief device 12, a busbar casing 1, a main busbar 7, a driving mechanism 15, and a gas Insulated busbar grounding assembly.
所述充气隔室11是由金属壳体40、母线套管1、法兰2、泄压装置12及充气接头14组成的密封空间,所述充气隔室11内可充入绝缘气体;充气隔室本体30包括充气隔室11和泄压通道13,接地组件3设置于充气隔室11内部,泄压通道13位于充气隔室11的下部,泄压通道13与充气隔室11之间设置有泄压装置12,在充气隔室11上设置有充气接头,在充气接头上安装有一自封阀14,可通过自封阀14向充气隔室11充入绝缘气体。The inflatable compartment 11 is a sealed space composed of a metal casing 40, a busbar casing 1, a flange 2, a pressure relief device 12 and an inflation joint 14, and the inflation compartment 11 can be filled with an insulating gas; The chamber body 30 includes an inflation compartment 11 and a pressure relief passage 13 , the grounding assembly 3 is disposed inside the inflation compartment 11 , the pressure relief passage 13 is located at a lower portion of the inflation compartment 11 , and the pressure relief passage 13 and the inflation compartment 11 are disposed between The pressure relief device 12 is provided with an inflation joint on the inflation compartment 11, and a self-sealing valve 14 is mounted on the inflation joint, and the inflation chamber 11 can be filled with an insulating gas through the self-sealing valve 14.
母线套管1为六个,分为三组,每组相对设置。每个母线套管1可通过法兰2安装于充气隔室11的两侧板(即金属壳体40的侧壁),分别通过三个主母排7进行主母线的电气连通,通过母线套管1实现本发明母线接地装置与外部开关柜主母线的连接。The busbar bushings 1 are six and are divided into three groups, each set being relatively opposed. Each busbar sleeve 1 can be mounted on the two side plates of the gas-filled compartment 11 (ie, the side walls of the metal casing 40) through the flange 2, and the main busbars are electrically connected through the three main busbars 7, respectively, through the busbar sleeves. The tube 1 realizes the connection of the bus grounding device of the present invention to the main busbar of the external switchgear.
所述接地组件包括静触头16、动触头18、触管26、绝缘筒20以及触座21,所述动触头18固定在所述触管26顶端上并与所述触管26电气连接,所述绝缘筒20的上端与所述静触头16固定连接,例如所述静触头16通过螺纹方式连接在绝缘筒20的上端;所述绝缘筒20的下端与所述触座21固定连接,例如通过螺纹方式连接在绝缘筒20的下端;所述绝缘筒20内具有一内孔,所述触座21具有与所述绝缘筒20的内孔同轴的中心孔,所述触管26穿过所述触座21的中心孔插入到所述绝缘筒20的内孔中,所述触座21通过设置在所述触座21的中心孔孔壁上的触指27与所述触管26电气连接,通过绝缘筒20实现接地断口的绝缘及支撑。接地合闸时,所述触管26向上移动带动所述动触头18与所述静触头16接触,接地分闸时,所述触管26向下移动带动所述动触头18与所述静触头16分离。 The grounding assembly includes a stationary contact 16, a movable contact 18, a contact tube 26, an insulation barrel 20, and a contact seat 21, and the movable contact 18 is fixed on the top end of the contact tube 26 and electrically connected to the contact tube 26. Connecting, the upper end of the insulating barrel 20 is fixedly connected to the static contact 16, for example, the static contact 16 is screwed to the upper end of the insulating barrel 20; the lower end of the insulating barrel 20 and the contact 21 a fixed connection, for example, a threaded connection to the lower end of the insulation barrel 20; the insulation barrel 20 has an inner hole therein, and the contact seat 21 has a center hole coaxial with the inner hole of the insulation barrel 20, the contact a tube 26 is inserted into an inner hole of the insulating barrel 20 through a center hole of the contact seat 21, and the contact seat 21 passes through a contact finger 27 provided on a wall of a center hole of the contact seat 21 The contact tube 26 is electrically connected, and the insulation and support of the ground fracture is realized by the insulation barrel 20. When the grounding is closed, the contact pipe 26 moves upward to bring the movable contact 18 into contact with the static contact 16. When the grounding is opened, the contact pipe 26 moves downward to drive the movable contact 18 and the ground. The stationary contacts 16 are separated.
所述触管26上还安装有一导向环19,所述导向环19的外周缘与所述绝缘筒20的内孔壁密封滑动抵接,所述导向环19与所述触座21之间的这部分绝缘筒20内孔构成一压力空间,所述导向环19与静触头16之间的这部分绝缘筒20的内孔的空间为上部空间,所述压力空间与所述绝缘筒20外的绝缘气体之间设置有灭弧气流通道,当所述接地组件合闸时,所述绝缘筒20外的绝缘气体通过唯一的灭弧气流通道,从动触头18流向压力空间,在动触头18及静触头16间产生灭弧气体的流动。A guide ring 19 is further disposed on the contact tube 26, and an outer peripheral edge of the guide ring 19 is sealingly abutted against an inner hole wall of the insulating cylinder 20, and between the guide ring 19 and the contact seat 21 The inner hole of the portion of the insulating cylinder 20 forms a pressure space, and the space of the inner hole of the portion of the insulating cylinder 20 between the guiding ring 19 and the static contact 16 is an upper space, and the pressure space is outside the insulating cylinder 20 An arc extinguishing air passage is disposed between the insulating gases. When the grounding component is closed, the insulating gas outside the insulating cylinder 20 passes through a single arc extinguishing air passage, and the driven contact 18 flows to the pressure space. The flow of the arc extinguishing gas is generated between the head 18 and the stationary contact 16.
具体地,参见图1、图3、图4,静触头16和动触头18位于上部空间内,在静触头16上设置有换气孔32,因此,上部空间与绝缘筒20外的绝缘气体连通,当接地组件接地合闸时,即在静触头16和动触头18的接触部位形成流动的灭弧气流,在动触头18及静触头16间产生灭弧气体的流动。Specifically, referring to FIG. 1 , FIG. 3 and FIG. 4 , the static contact 16 and the movable contact 18 are located in the upper space, and the static contact 16 is provided with a ventilation hole 32 , so that the upper space and the outer portion of the insulating tube 20 are The insulating gas is connected, and when the grounding component is grounded, the flow of the arc extinguishing airflow is formed at the contact portion of the static contact 16 and the movable contact 18, and the flow of the arc extinguishing gas is generated between the moving contact 18 and the static contact 16. .
接地组件还包括屏蔽罩17,屏蔽罩17设置于绝缘筒20的静触头16侧的外部,用于对接地组件3的高压部分进行电场屏蔽,屏蔽罩17罩在静触头16以及绝缘筒20中上部的外围,可通过控制屏蔽罩17的外圆尺寸实现接地组件3高压侧电场强度的调整,达到满足不同电压等级接地组件的绝缘要求。The grounding assembly further includes a shield cover 17 disposed outside the stationary contact 16 side of the insulating cylinder 20 for electrically shielding the high voltage portion of the grounding assembly 3, the shield cover 17 covering the stationary contact 16 and the insulating cylinder In the periphery of the upper part of the upper part of the 20, the electric field strength of the high-voltage side of the grounding component 3 can be adjusted by controlling the outer circle size of the shield cover 17, so as to meet the insulation requirements of the grounding components of different voltage levels.
所述接地组件包括短接母排22,所述短接母排22固定在所述触座21上并与所述触座21电气连接,所述短接母排22与所述充气隔室11的侧板电气连接,用于将接地组件进行接地连接。当接地装置合闸时,电流通过开关柜外的母线依次传递至母线套管1、主母排7、静触头16、动触头18、触管26、触指27、触座21以及短接母排22而传递金属壳体40,实现接地保护。The grounding assembly includes a shorting busbar 22 fixed to the contact base 21 and electrically connected to the contact seat 21, the shorting busbar 22 and the inflatable compartment 11 The side panel electrical connections are used to ground the grounding components. When the grounding device is closed, the current is sequentially transmitted to the busbar bushing 1, the main busbar 7, the stationary contact 16, the movable contact 18, the contact pipe 26, the contact finger 27, the contact seat 21, and the short through the bus bar outside the switch cabinet. The metal casing 40 is transferred to the busbar 22 to achieve grounding protection.
所述动触头18通过一连接件与所述触管26固定电气连接,可以理解的是,连接件起到的是固定连接和电气连接动触头18和触管26的作用,因此,连接件的结构不限,可以是螺钉、螺栓、或者其他的固定结构。例如,动触头18通过螺钉24实现与触管26固定电气连接;触座21的中心孔的孔壁上设置有触指 27,触管26在上下运动时,始终保持触管26的表面与触指27滑动电接触,可实现触管26与触座21的活动电气连接;触管26通过动杆8的连接,可随拐臂9的转动在导杆4的竖直方向上按图4所示实现上下运动(图4中的驱动机构为简图),实现接地组件3的合分动作,完成开关柜主母线的接地功能;短接母排22设置于接地组件3的触座21侧,通过螺母23实现接地组件3的相间短接,并与充气隔室11固定连接,可实现电力系统的三相短接,并平衡系统三相不平衡电流。The movable contact 18 is fixedly electrically connected to the contact tube 26 through a connecting member. It can be understood that the connecting member functions to fix and electrically connect the movable contact 18 and the contact tube 26, and therefore, the connection The structure of the piece is not limited and may be a screw, a bolt, or other fixed structure. For example, the movable contact 18 is fixedly connected to the contact pipe 26 by the screw 24; the contact hole of the center hole of the contact seat 21 is provided with a contact finger 27, when the contact pipe 26 moves up and down, the surface of the contact pipe 26 is always in sliding electrical contact with the contact finger 27, so that the movable connection of the contact pipe 26 and the contact seat 21 can be realized; the contact pipe 26 can be connected by the moving rod 8, With the rotation of the arm 9 in the vertical direction of the guide rod 4, the up-and-down motion is realized as shown in FIG. 4 (the driving mechanism in FIG. 4 is a simplified diagram), and the joint action of the grounding component 3 is realized, and the main busbar of the switch cabinet is completed. The grounding function is provided; the shorting busbar 22 is disposed on the contact 21 side of the grounding component 3, and the phase-to-phase shorting of the grounding component 3 is realized by the nut 23, and is fixedly connected with the inflatable compartment 11 to realize short-circuiting of the three-phase of the power system. And balance the system three-phase unbalanced current.
导向环19上可设置第一密封圈25,触座21上可设置第二密封圈28,触管26上可设置第三密封圈29,通过导向环19、导杆4、触管26、触座21及绝缘筒20可在接地组件3内形成压力空间A;在静触头16上设置有换气孔32,上部空间通过换气孔32与绝缘筒20外的绝缘气体(即充气隔室11内的绝缘气体)连通,防止阻碍触管26的向上运动(如果没有设置换气孔32,在触管26向上运动时,上部的空间内的气体不断内压缩,压强逐渐增大,对触管26的运动形成阻力)。触管26的外圆设置有1个以上的径向通孔31,此径向通孔31在接地组件3处于分闸位置时仍处于压力空间A内;动触头18为自力型触头,触指间开一定间距的槽口,因此当动触头18和静触头16接地合闸时,动触头18和静触头16之间会存在一定的间隙使得灭弧气流经过动触头18和静触头16之间的接触部位,连接件上开设一中心通孔,连接件上的中心通孔与触管26上的径向通孔31连通,因此,压力空间A仅能通过触管26的径向通孔31、连接件的(如螺钉24)的中心通孔33及动触头18的槽口以及换气孔32与充气隔室11内的绝缘气体相通。请参见图4,当接地组件3在分闸位置时,动触头18位于绝缘筒20的下方,压力空间A体积较小,当操作接地装置合闸接地操作,触管26受拐臂9及动杆8的驱动,快速带动动触头18向静触头16运动,压力空间A内的体积迅速增大,形成负压,因此,充气隔室11 的绝缘介质(即绝缘气体)通过唯一的灭弧气流通道,从动触头18流向压力空间A,在动触头18及静触头16间产生灭弧气体的流动。接地关闸、合闸操作过程中,当断口距离减小到绝缘击穿后,即产生关合预击穿,动触头18、静触头16间产生的流动的绝缘气体可冷却预击穿电弧,降低动、静触头16的电弧烧蚀,达到气体绝缘母线接地装置免维护的目的。A first sealing ring 25 can be disposed on the guiding ring 19, and a second sealing ring 28 can be disposed on the contact seat 21. A third sealing ring 29 can be disposed on the contact tube 26, through the guiding ring 19, the guiding rod 4, the contact tube 26, and the contact The seat 21 and the insulating cylinder 20 can form a pressure space A in the grounding component 3; the static contact 16 is provided with a ventilation hole 32, and the upper space passes through the ventilation hole 32 and the insulating gas outside the insulating cylinder 20 (ie, the inflatable compartment) The insulating gas in 11 is connected to prevent the upward movement of the contact pipe 26 (if the ventilation hole 32 is not provided, when the contact pipe 26 moves upward, the gas in the upper space is continuously compressed, and the pressure gradually increases, and the contact The movement of the tube 26 creates a resistance). The outer circumference of the contact pipe 26 is provided with more than one radial through hole 31. The radial through hole 31 is still in the pressure space A when the grounding assembly 3 is in the opening position; the moving contact 18 is a self-type contact. When the movable contact 18 and the static contact 16 are grounded and closed, there is a certain gap between the movable contact 18 and the static contact 16 so that the arc extinguishing air flows through the movable contact. A contact portion between the 18 and the stationary contact 16 defines a central through hole, and the central through hole on the connecting member communicates with the radial through hole 31 on the contact pipe 26, so that the pressure space A can only pass through The radial through hole 31 of the tube 26, the central through hole 33 of the connector (such as the screw 24), and the notch of the movable contact 18 and the ventilation hole 32 communicate with the insulating gas in the inflation chamber 11. Referring to FIG. 4, when the grounding component 3 is in the opening position, the movable contact 18 is located below the insulating cylinder 20, and the pressure space A is small in volume. When the operating grounding device is closed and grounded, the contactor 26 is biased by the arm 9 and The driving of the moving rod 8 rapidly drives the movable contact 18 to move to the stationary contact 16, and the volume in the pressure space A rapidly increases to form a negative pressure, and therefore, the inflatable compartment 11 The insulating medium (ie, the insulating gas) passes through the only arc extinguishing air passage, and the driven contact 18 flows to the pressure space A to generate a flow of the arc extinguishing gas between the moving contact 18 and the stationary contact 16. During the grounding closing and closing operation, when the fracture distance is reduced to the insulation breakdown, the pre-breakdown is closed, and the flowing insulating gas generated between the moving contact 18 and the static contact 16 can cool the pre-breakdown. The arc reduces the arc ablation of the moving and stationary contacts 16 to achieve the maintenance-free operation of the gas insulated busbar grounding device.
接地组件3与主母排7固定连接,接地组件3通过触管26与动杆8活动连接,动杆8穿装于拐臂9的内孔,通过拐臂9的转动,驱动接地组件3的触管26上下运动,实现接地组件3的接地合闸、接地分闸动作;导杆4穿装于触管26的内孔,导杆4的下部通过支撑板5及支撑座6固定于充气隔室11的侧板(即金属壳体40的侧壁),用于触管26的动作导向;泄压装置12可通过泄压通道13进行内部电弧故障气体的收集;主轴10一端密封安装于充气隔室11内部,与拐臂9固定连接并可自由旋转,主轴10的另一端设置于充气隔室11的外部,可与操作机构15进行连接,实现机构能量的传递。The grounding component 3 is fixedly connected to the main busbar 7, and the grounding component 3 is movably connected to the moving rod 8 through the contact pipe 26, and the moving rod 8 is put into the inner hole of the rotating arm 9, and the grounding component 3 is driven by the rotation of the rotating arm 9. The contact pipe 26 moves up and down to realize the grounding closing and grounding opening action of the grounding component 3; the guiding rod 4 is worn in the inner hole of the contact pipe 26, and the lower part of the guiding rod 4 is fixed to the inflatable compartment through the supporting plate 5 and the supporting base 6 The side plate of the chamber 11 (ie, the side wall of the metal casing 40) is used for the action guiding of the contact pipe 26; the pressure relief device 12 can collect the internal arc fault gas through the pressure relief passage 13; the main shaft 10 is sealed at one end and installed in the air. The inside of the compartment 11 is fixedly connected to the arm 9 and is freely rotatable. The other end of the main shaft 10 is disposed outside the inflation compartment 11 and can be connected to the operating mechanism 15 to realize the transmission of the mechanism energy.
本发明实施例还提供一种气体绝缘开关柜,该开关柜具有主母线,开关柜包括上述任一种的接地装置,主母线7与母线套管1对应连接。The embodiment of the invention further provides a gas insulated switchgear, the switchgear has a main busbar, and the switchgear comprises any one of the above grounding devices, and the main busbar 7 is correspondingly connected with the busbar bushing 1.
以上描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求的保护范围由所附的权利要求书及其等同物界定。 The basic principles, main features and advantages of the present invention have been described above. It should be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, and that the present invention is described in the foregoing description and the description of the present invention. Such changes and modifications are intended to fall within the scope of the invention as claimed. The protection scope of the invention is defined by the appended claims and their equivalents.

Claims (25)

  1. 一种气体绝缘母线接地组件,其特征在于:所述接地组件包括静触头、动触头、触管、绝缘筒以及触座,所述动触头固定在所述触管顶端上并与所述触管电气连接,所述绝缘筒的上端与所述静触头固定连接,所述绝缘筒的下端与所述触座固定连接,所述绝缘筒内具有一内孔,所述触座具有与所述绝缘筒的内孔同轴的中心孔,所述触管穿过所述触座的中心孔插入到所述绝缘筒的内孔中,所述触座通过设置在所述触座的中心孔孔壁上的触指与所述触管电气连接;接地合闸时,所述触管向上移动带动所述动触头与所述静触头接触,接地分闸时,所述触管向下移动带动所述动触头与所述静触头分离。A gas insulated busbar grounding component, characterized in that: the grounding component comprises a static contact, a movable contact, a contact pipe, an insulation cylinder and a contact seat, and the movable contact is fixed on the top end of the contact pipe and The upper end of the insulating tube is fixedly connected to the static contact, the lower end of the insulating tube is fixedly connected to the contact seat, and the insulating tube has an inner hole therein, and the contact seat has a central hole coaxial with the inner hole of the insulating barrel, the contact tube being inserted into the inner hole of the insulating barrel through a center hole of the contact seat, the contact seat being disposed at the contact seat The contact finger on the wall of the central hole is electrically connected to the contact pipe; when the grounding is closed, the contact pipe moves upward to bring the movable contact into contact with the static contact, and when the ground is opened, the contact pipe The downward movement causes the movable contact to be separated from the stationary contact.
  2. 如权利要求1所述接地组件,其特征在于:所述触管上还安装有一导向环,所述导向环的外周缘与所述绝缘筒的内孔壁密封滑动抵接,所述导向环与所述触座之间的这部分绝缘筒内孔构成一压力空间,所述压力空间与所述绝缘筒外的绝缘气体之间设置有灭弧气流通道,当所述接地组件接地合闸时,所述绝缘筒外的绝缘气体通过唯一的灭弧气流通道,从动触头流向压力空间,在动触头及静触头间产生灭弧气体的流动。The grounding assembly of claim 1 , wherein a guide ring is further mounted on the contact tube, and an outer circumference of the guide ring is sealingly abutted against an inner hole wall of the insulation tube, and the guide ring is The portion of the inner bore of the insulating cylinder between the contacts forms a pressure space, and the arc space is disposed between the pressure space and the insulating gas outside the insulating cylinder. When the grounding component is grounded and closed, The insulating gas outside the insulating cylinder passes through a single arc extinguishing air passage, and the driven contact flows to the pressure space to generate a flow of the arc extinguishing gas between the moving contact and the stationary contact.
  3. 如权利要求2所述接地组件,其特征在于:所述静触头上设置有换气孔,所述导向环与所述静触头之间的这部分绝缘筒内孔构成的空间通过所述换气孔与所述绝缘筒外的绝缘气体连通。The grounding assembly of claim 2, wherein the static contact is provided with a ventilation hole, and a space formed by the inner hole of the portion of the insulating cylinder between the guide ring and the stationary contact passes through The venting hole is in communication with an insulating gas outside the insulating cylinder.
  4. 如权利要求2所述接地组件,其特征在于:所述触管上开设有至少一个以上的径向通孔;所述动触头通过一连接件与所述触管固定电气连接,所述连接件上开设一中心通孔,所述连接件上的中心通孔与所述触管上的径向通孔连通,所述触管上的径向通孔与所述压力空间连通。The grounding assembly of claim 2, wherein the contact tube is provided with at least one radial through hole; the movable contact is fixedly electrically connected to the contact tube through a connecting member, the connection A central through hole is defined in the piece, and a central through hole on the connecting member communicates with a radial through hole on the contact pipe, and a radial through hole on the contact pipe communicates with the pressure space.
  5. 如权利要求4所述接地组件,其特征在于:所述连接件为螺钉。 The grounding assembly of claim 4 wherein said connector is a screw.
  6. 如权利要求1所述接地组件,所述动触头为自力型触头,触指间张开一定间距的槽口。The grounding assembly of claim 1, wherein the movable contact is a self-acting contact, and the notch is opened between the fingers.
  7. 如权利要求1所述的接地组件,其特征在于,所述接地组件还包括屏蔽罩,所述屏蔽罩罩设在所述静触头以及绝缘筒中上部的外围。The grounding assembly of claim 1 wherein said grounding assembly further comprises a shield, said shield being disposed on said periphery of said stationary contact and said upper portion of said insulating cylinder.
  8. 如权利要求1所述的接地组件,其特征在于,所述接地组件包括短接母排,所述短接母排固定在所述触座上并与所述触座电气连接。The grounding assembly of claim 1 wherein said grounding assembly includes a shorting busbar, said shorting busbar being secured to said contact and electrically coupled to said contact.
  9. 如权利要求1所述的接地组件,其特征在于,所述接地组件还包括导杆,所述触管的内孔套在所述导杆上,所述触管沿所述导杆上下移动。The grounding assembly of claim 1 wherein said grounding assembly further comprises a guide rod, said inner bore of said contact tube being overlying said guide rod, said contact tube moving up and down along said guide rod.
  10. 一种气体绝缘母线快速接地装置,其特征在于,所述接地装置包括权利要求1-9任一项所述接地组件,以及还包括:A gas insulated busbar quick-grounding device, characterized in that the grounding device comprises the grounding component according to any one of claims 1-9, and further comprising:
    一充气隔室本体,所述充气隔室本体包括充气隔室,在所述充气隔室上设置有充气接头,在所述充气接头上安装有一自封阀;An inflatable compartment body, the inflatable compartment body comprising an inflation compartment, on which an inflation joint is disposed, and a self-sealing valve is mounted on the inflation joint;
    安装在所述充气隔室两相对侧板上的六个母线套管;每两个母线套管为一相,相对设置;Six busbar bushings mounted on opposite side plates of the inflatable compartment; each of the two busbar bushings is a phase, oppositely disposed;
    位于所述充气隔室内的三相主母排,每相主母排安装在对应相的两个母线套管之间,每相主母排通过该相的两个母线套管与外部开关柜主母线连接;a three-phase main busbar located in the air-filled compartment, each phase of the main busbar is installed between two busbar bushings of the corresponding phase, and each phase of the main busbar passes through the two busbar bushings of the phase and the external switchgear main Busbar connection;
    所述接地组件为三相接地组件,每相接地组件的上端与对应相的主母排连接;The grounding component is a three-phase grounding component, and an upper end of each phase grounding component is connected to a main busbar of a corresponding phase;
  11. 如权利要求10所述的接地装置,其特征在于,所述接地装置包括驱动三相接地组件实现接地合闸和接地分闸的驱动机构,所述驱动机构包括:操作机构、主轴以及拐臂,所述操作机构安装在所述充气隔室外,所述主轴由所述操作机构驱动转动,所述主轴插入所述充气隔室内,所述拐臂安装在所述主轴上,所述主轴同步带动拐臂转动,拐臂通过一动杆与所述触管铰接,拐臂通过动杆带动对应的触管上下运动。 The grounding device according to claim 10, wherein said grounding means comprises a driving mechanism for driving a three-phase grounding assembly for grounding and grounding, said driving mechanism comprising: an operating mechanism, a main shaft and a crank arm The operating mechanism is installed outside the air-filled compartment, the main shaft is driven to rotate by the operating mechanism, the main shaft is inserted into the air-filled compartment, the arm is mounted on the main shaft, and the main shaft is synchronously driven The arm rotates, and the arm is hinged to the contact tube through a moving rod, and the arm moves the corresponding contact tube up and down by the moving rod.
  12. 如权利要求11所述的接地装置,其特征在于,所述充气隔室包括泄压装置,所述泄压装置设置于泄压通道与充气隔室之间,所述泄压装置设置于所述充气隔室的顶部或底部。The grounding device according to claim 11, wherein said inflation compartment comprises a pressure relief device, said pressure relief device being disposed between the pressure relief passage and the inflation compartment, said pressure relief device being disposed in said The top or bottom of the inflatable compartment.
  13. 气体绝缘母线快速接地装置,其特征在于,包括:A gas insulated busbar quick grounding device, characterized by comprising:
    一充气隔室本体,所述充气隔室本体包括充气隔室和泄压通道,所述泄压通道与所述充气隔室之间设置有泄压装置,在所述充气隔室上设置有充气接头;An inflatable compartment body, the inflatable compartment body including an inflation compartment and a pressure relief passage, a pressure relief device disposed between the pressure relief passage and the inflation compartment, and an inflation device disposed on the inflation compartment Joint
    安装在所述充气隔室两相对侧板上的六个母线套管;每两个母线套管为一相,相对设置;Six busbar bushings mounted on opposite side plates of the inflatable compartment; each of the two busbar bushings is a phase, oppositely disposed;
    位于所述充气隔室内的三相主母排,每相主母排安装在对应相的两个母线套管之间,每相主母排通过该相的两个母线套管与外部开关柜主母线连接;a three-phase main busbar located in the air-filled compartment, each phase of the main busbar is installed between two busbar bushings of the corresponding phase, and each phase of the main busbar passes through the two busbar bushings of the phase and the external switchgear main Busbar connection;
    位于所述充气隔室内的三相接地组件,每相接地组件的上端与对应相的主母排连接,每相接地组件中的导杆下端支撑在所述充气隔室中的一侧板连接;a three-phase grounding assembly located in the air-filled compartment, the upper end of each phase-grounding component is connected to the main busbar of the corresponding phase, and the lower end of the guiding rod in each phase-cored component is supported on one side of the inflatable compartment Board connection
    一驱动三相接地组件实现接地合闸和接地分闸的驱动机构。A drive mechanism that drives a three-phase grounding assembly to achieve grounding and grounding tripping.
  14. 如权利要求13所述的气体绝缘母线快速接地装置,其特征在于,所述充气接头上安装有自封阀。A gas insulated busbar quick-grounding device according to claim 13, wherein a self-sealing valve is mounted on said inflation joint.
  15. 如权利要求13所述的气体绝缘母线快速接地装置,其特征在于,每相接地组件还包括:The gas insulated busbar quick-grounding device of claim 13 wherein each phase-to-phase component further comprises:
    一与所述主母排固定连接的静触头;a static contact fixedly connected to the main busbar;
    一上端与所述静触头固定连接的绝缘筒,所述绝缘筒内具有一内孔;An insulating cylinder fixedly connected to the static contact at the upper end, the insulating cylinder has an inner hole therein;
    一固定在所述绝缘筒下端的触座,所述触座具有与所述绝缘筒的内孔同轴的中心孔,所述导杆的中上部穿过所述触座的中心孔插入到所述绝缘筒的内孔中;a contact seat fixed to a lower end of the insulation barrel, the contact seat having a center hole coaxial with an inner hole of the insulation barrel, and a middle upper portion of the guide rod is inserted into a center hole of the contact seat In the inner bore of the insulating cylinder;
    一触管,所述触管具有一用以套设在所述导杆上的内孔,所述触管的内孔套在所述导杆上;所述触管也穿过所述触座的中心孔插入到所述绝缘筒的内孔 中;所述触座通过设置在所述触座的中心孔孔壁上的触指与所述触管电气连接;所述触管与所述驱动机构驱动连接,由所述驱动机构带动沿所述导杆上下移动;a contact tube having an inner hole for being sleeved on the guide rod, an inner hole of the contact tube is sleeved on the guide rod; the contact tube also passes through the contact seat a central hole inserted into the inner hole of the insulating cylinder The contact seat is electrically connected to the contact tube through a contact finger disposed on a wall of the central hole of the contact seat; the contact tube is drivingly connected with the driving mechanism, and the driving mechanism drives the edge The guide rod moves up and down;
    固定在所述触管顶端上并与所述触管电气连接的动触头,接地合闸时,所述触管向上移动带动动触头与所述静触头接触,接地分闸时,所述触管向下移动带动所述动触头与所述静触头分离;a movable contact fixed to the top end of the contact pipe and electrically connected to the contact pipe, when the grounding is closed, the contact pipe moves upward to bring the movable contact into contact with the static contact, and when the ground is opened, the ground contact The downward movement of the contact pipe drives the movable contact to be separated from the static contact;
    固定在所述触座上并与所述触座电气连接的短接母排,所述短接母排与所述充气隔室的侧板电气连接。A shorting busbar fixed to the contact and electrically connected to the contact, the shorting busbar being electrically connected to a side panel of the inflatable compartment.
  16. 如权利要求15所述的气体绝缘母线快速接地装置,其特征在于,在所述静触头上设置有一屏蔽罩,所述屏蔽罩罩在所述静触头以及绝缘筒中上部的外围。A gas insulated busbar quick-grounding device according to claim 15, wherein a shield cover is disposed on the stationary contact, and the shield covers the periphery of the upper portion of the stationary contact and the insulating cylinder.
  17. 如权利要求16所述的气体绝缘母线快速接地装置,其特征在于,在所述触管上还安装有一导向环,所述导向环的外周缘与所述绝缘筒的内孔壁滑动接触。The gas insulated busbar quick-grounding device according to claim 16, wherein a guide ring is further mounted on the contact pipe, and an outer peripheral edge of the guide ring is in sliding contact with an inner hole wall of the insulating cylinder.
  18. 如权利要求17所述的气体绝缘母线快速接地装置,其特征在于,在所述导向环的外周缘设置有第一密封圈,所述第一密封圈用以密封所述导向环的外周缘与所述绝缘筒的内孔壁之间的接触间隙。The gas insulated busbar quick-grounding device according to claim 17, wherein a first sealing ring is disposed on an outer circumference of the guiding ring, and the first sealing ring is used for sealing an outer circumference of the guiding ring. a contact gap between the inner wall of the insulating cylinder.
  19. 如权利要求18所述的气体绝缘母线快速接地装置,其特征在于,在所述触座的中心孔的孔壁上设置有第二密封圈,所述第二密封圈用以密封所述触座的中心孔的孔壁与所述触管的外周壁之间的接触间隙。A gas insulated busbar quick-grounding device according to claim 18, wherein a second sealing ring is disposed on a hole wall of the center hole of the contact seat, and the second sealing ring is for sealing the contact seat. The contact gap between the hole wall of the center hole and the outer peripheral wall of the contact pipe.
  20. 如权利要求19所述的气体绝缘母线快速接地装置,其特征在于,在所述触管的内孔的孔壁上设置有第三密封圈,所述第三密封圈用以密封所述触管的内孔与所述导杆外周面之间的间隙。The gas insulated busbar quick-grounding device according to claim 19, wherein a third sealing ring is disposed on the hole wall of the inner hole of the contact pipe, and the third sealing ring is used for sealing the contact pipe a gap between the inner hole and the outer peripheral surface of the guide rod.
  21. 如权利要求20所述的气体绝缘母线快速接地装置,其特征在于,所述动触头通过一螺钉安装在所述触管上,在所述螺钉上开设有一中心通孔,在所 述触管上开设有至少一个以上的径向通孔,所述螺钉上的中心通孔与所述触管上的径向通孔连通;所述导向环与所述触座之间的这部分绝缘筒内孔构成一压力空间,所述触管上的径向通孔与所述压力空间连通;在所述静触头上设置有换气孔。The gas insulated busbar quick-grounding device according to claim 20, wherein the movable contact is mounted on the contact pipe by a screw, and a central through hole is formed in the screw. At least one or more radial through holes are formed in the contact tube, and a central through hole on the screw communicates with a radial through hole on the contact tube; the portion between the guide ring and the contact base The inner hole of the insulating cylinder constitutes a pressure space, and the radial through hole on the contact pipe communicates with the pressure space; a ventilation hole is arranged on the static contact.
  22. 如权利要求21所述的气体绝缘母线快速接地装置,其特征在于,所述动触头为自力型触头,触指间张开一定间距的槽口。The gas insulated busbar quick-grounding device according to claim 21, wherein the movable contact is a self-acting contact, and a notch of a certain distance is opened between the fingers.
  23. 如权利要求22所述的气体绝缘母线快速接地装置,其特征在于,所述泄压装置设置于所述充气隔室的顶部或底部。A gas insulated busbar quick-grounding device according to claim 22, wherein said pressure relief device is disposed at the top or bottom of said inflatable compartment.
  24. 如权利要求13至23任一项权利要求所述的气体绝缘母线快速接地装置,其特征在于,所述驱动机构包括:The gas insulated busbar quick grounding device according to any one of claims 13 to 23, wherein the driving mechanism comprises:
    一安装在所述充气隔室外的操作机构;An operating mechanism installed outside the inflatable compartment;
    一由所述操作机构驱动转动的主轴,所述主轴插入所述充气隔室内;a spindle driven by the operating mechanism, the spindle being inserted into the inflation compartment;
    沿所述主轴的轴向间隔安装在所述主轴上的三块拐臂,所述主轴同步带动三块拐臂转动,每一拐臂通过一动杆与所述触筒铰接,每一拐臂通过动杆带动对应的触筒上下移动。Three arms are mounted on the main shaft at an axial interval of the main shaft, and the main shaft synchronously drives three arm rotations, and each of the armes is hinged to the contact cylinder through a moving rod, and each of the arm passes The moving rod drives the corresponding contact cylinder to move up and down.
  25. 一种气体绝缘开关柜,所述开关柜包括主母线,其特征在于,所述气体绝缘开关柜包括权利要求10-12中任一项所述的气体绝缘母线快速接地装置或13-24中任一项所述的气体绝缘母线快速接地装置,所述主母线与所述母线套管连接。 A gas insulated switchgear, comprising: a main busbar, wherein the gas insulated switchgear comprises the gas insulated busbar quick grounding device according to any one of claims 10-12 or 13-24 A gas insulated busbar quick grounding device, the main busbar being connected to the busbar bushing.
PCT/CN2017/110208 2016-11-12 2017-11-09 Gas-insulated bus grounding component, grounding device and gas-insulated switch cabinet WO2018086561A1 (en)

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CN106384961B (en) * 2016-11-12 2018-07-17 上海天灵开关厂有限公司 A kind of gas insulated bus earthing or grounding means
CN108258608B (en) * 2017-12-15 2020-08-04 北京双杰电气股份有限公司 Solid insulation measurement cabinet
CN109490734B (en) * 2018-12-20 2020-10-23 上海平高天灵开关有限公司 High-speed performance testing device for high-voltage insulating part

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