CN112133591A - A PT cabinet switch device - Google Patents

A PT cabinet switch device Download PDF

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Publication number
CN112133591A
CN112133591A CN202011049597.0A CN202011049597A CN112133591A CN 112133591 A CN112133591 A CN 112133591A CN 202011049597 A CN202011049597 A CN 202011049597A CN 112133591 A CN112133591 A CN 112133591A
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China
Prior art keywords
isolating
switch
fixed contact
transmission shaft
static
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CN202011049597.0A
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Chinese (zh)
Inventor
卢裕德
黄楷涛
张力文
高艳辉
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Zhuhai XJ Electric Co Ltd
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Zhuhai XJ Electric Co Ltd
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Priority to CN202011049597.0A priority Critical patent/CN112133591A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/04—Interlocking mechanisms
    • H01H31/10—Interlocking mechanisms for interlocking two or more switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/023—Base and stationary contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon

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  • Gas-Insulated Switchgears (AREA)

Abstract

The invention discloses a PT cabinet switch device, comprising: the supporting frame is fixedly connected with the mounting frame; the first insulating support seat is arranged on the support frame, and the switch transmission shaft is rotationally connected with the mounting frame; the isolating switch assembly is arranged on the switch transmission shaft and can rotate for a preset angle along the axial direction of the switch transmission shaft; the grounding fixed contact is arranged on the supporting frame, the isolating fixed contact is arranged on the installing frame, and the fixed end fixed contact is arranged on the first insulating supporting seat; the isolation static contact, the static end static contact and the grounding static contact are respectively arranged along the axial direction of the switch transmission shaft; the switch transmission shaft rotates to drive the isolating switch assembly to be connected with the isolating fixed contact, the fixed end fixed contact and the grounding fixed contact respectively. The electric field distribution is optimized according to the electrical property characteristics of the dry air and the nitrogen, the requirement on the insulating property of various types of gas is met, and the gas can be used as SF6The switch or the environment-friendly switch is used, a double-break structure is adopted, the structure compactness is improved, and the insulation performance of the switch device is improved.

Description

一种PT柜开关装置A PT cabinet switch device

技术领域technical field

本发明涉及电力设备制造技术领域，特别涉及一种PT柜开关装置。The invention relates to the technical field of power equipment manufacturing, in particular to a PT cabinet switch device.

背景技术Background technique

目前，在10kV的开关设备中，SF6开关仍占据着主流市场。而SF6气体是一种温室效应气体，其单分子的温室效应是CO2的2.2万倍，是《京都协议书》中被禁止排放的6种温室气体之一。因此，在提倡节能环保的大环境下，电力开关行业必须逐步削减SF6气体开关设备的使用。At present, in the switchgear of 10kV, SF6 switch still occupies the mainstream market. SF 6 gas is a greenhouse effect gas, and its single molecule greenhouse effect is 22,000 times that of CO 2. It is one of the six greenhouse gases that are prohibited from being emitted in the Kyoto Protocol. Therefore, under the environment of promoting energy saving and environmental protection, the power switch industry must gradually reduce the use of SF 6 gas switchgear.

由于SF6气体的绝缘性能和灭弧性能明显要优于氮气、干燥空气等环保气体，目前市场上运用的SF6开关装置无法直接更换环保气体成为环保型开关。因此，需要针环保气体的绝缘特点，开发新的开关装置，兼容更多种类的气体绝缘介质，同时具备安全、可靠、紧凑等特点。Since the insulation performance and arc extinguishing performance of SF 6 gas are obviously better than those of environmental protection gases such as nitrogen and dry air, the SF 6 switchgear currently used in the market cannot directly replace the environmental protection gas to become an environmentally friendly switch. Therefore, it is necessary to develop a new switchgear based on the insulation characteristics of environmentally friendly gases, which is compatible with more types of gas insulation media, and has the characteristics of safety, reliability and compactness.

发明内容SUMMARY OF THE INVENTION

本发明实施例的目的是提供一种PT柜开关装置，通过依据干燥空气、氮气的电性能特性，优化电场分布，满足了对多种类型气体绝缘性能的要求，既可以作为SF6开关使用，也可以作为环保型开关使用，且采用双断口结构，提高了结构的紧凑性，并提升了开关装置的绝缘性能，防止了误操作。The purpose of the embodiments of the present invention is to provide a PT cabinet switchgear, by optimizing the electric field distribution according to the electrical performance characteristics of dry air and nitrogen, and meeting the requirements for various types of gas insulation performance, which can be used as an SF6 switch, It can also be used as an environmentally friendly switch, and adopts a double-break structure, which improves the compactness of the structure, improves the insulation performance of the switch device, and prevents misoperation.

为解决上述技术问题，本发明实施例提供了一种PT柜开关装置，包括：支撑框架、安装框架、开关传动轴、隔离开关组件、隔离静触头、静端静触头、接地静触头和第一绝缘支撑座；In order to solve the above technical problems, an embodiment of the present invention provides a PT cabinet switch device, including: a support frame, a mounting frame, a switch drive shaft, an isolation switch assembly, an isolation static contact, a static terminal static contact, and a grounding static contact and the first insulating support seat;

所述支撑框架与所述安装框架固定连接，所述第一绝缘支撑座设置于所述支撑框架上，所述开关传动轴与所述安装框架转动连接；the support frame is fixedly connected to the installation frame, the first insulating support base is arranged on the support frame, and the switch transmission shaft is rotatably connected to the installation frame;

所述隔离开关组件设置于所述开关传动轴上，并可沿所述开关传动轴的轴向转动预设角度；The isolation switch assembly is arranged on the switch transmission shaft, and can be rotated by a preset angle along the axial direction of the switch transmission shaft;

所述接地静触头设置于所述支撑框架上，所述隔离静触头设置于所述安装框架上，所述静端静触头设置于所述第一绝缘支撑座上；The grounding static contact is arranged on the support frame, the isolation static contact is arranged on the mounting frame, and the static end static contact is arranged on the first insulating support base;

所述隔离静触头、所述静端静触头和所述接地静触头分别沿所述开关传动轴轴向设置；The isolation static contact, the static end static contact and the grounding static contact are respectively arranged axially along the switch transmission shaft;

所述开关传动轴转动带动所述隔离开关组件分别与所述隔离静触头、所述静端静触头和所述接地静触头连接，以实现所述静端静触头和所述隔离静触头的连接或所述隔离静触头和所述接地静触头的连接。The switch drive shaft rotates to drive the isolation switch assembly to connect with the isolation static contact, the static terminal static contact and the grounding static contact, respectively, so as to realize the isolation between the static terminal static contact and the grounding static contact. The connection of the stationary contact or the connection of the isolating stationary contact and the ground stationary contact.

进一步地，所述隔离开关组件包括三个隔离开关，所述隔离开关包括：隔离刀套和隔离开关动刀；Further, the isolating switch assembly includes three isolating switches, and the isolating switches include: isolating knife sleeves and isolating switch moving knives;

所述隔离刀套中部设有通孔，所述隔离刀套相对的两侧设有缺口；A through hole is provided in the middle of the isolation knife sleeve, and gaps are provided on opposite sides of the isolation knife sleeve;

所述开关传动轴贯穿于所述三个隔离开关的所述通孔且与所述隔离刀套固定连接；The switch transmission shaft penetrates through the through holes of the three isolation switches and is fixedly connected with the isolation knife sleeve;

所述隔离开关动刀设置于所述隔离刀套的所述缺口内；The isolating switch movable knife is arranged in the notch of the isolating knife sleeve;

所述开关传动轴转动带动所述隔离开关动刀分别与所述静端静触头和所述隔离静触头连接，或，分别与所述隔离静触头和所述接地静触头连接。The switch drive shaft rotates and drives the isolating switch moving knife to connect with the static end static contact and the isolation static contact, respectively, or connect with the isolation static contact and the grounding static contact, respectively.

进一步地，所述隔离刀套和/或所述隔离开关动刀为圆弧形。Further, the isolating knife sleeve and/or the isolating switch movable knife are arc-shaped.

进一步地，PT柜开关装置还包括：Further, the PT cabinet switchgear also includes:

负载连接铜排，其固定设置于所述第一绝缘支撑座底部，且分别与相应所述隔离静触头固定连接；The load connecting copper bar is fixedly arranged on the bottom of the first insulating support base and is respectively fixedly connected with the corresponding isolated static contacts;

所述负载连接铜排底部与负载侧连接。The bottom of the load connecting copper bar is connected to the load side.

进一步地，PT柜开关装置还包括：Further, the PT cabinet switchgear also includes:

母线连接铜排，其固定设置于所述第一绝缘支撑座顶部，且分别与相应的所述静端静触头固定连接；The busbar is connected to the copper bar, which is fixedly arranged on the top of the first insulating support base, and is respectively fixedly connected with the corresponding static end static contacts;

所述母线连接铜排顶端与母线侧连接。The bus bar is connected to the top end of the copper bar and the bus bar side.

进一步地，所述支撑框架包括：支撑前板、支撑横梁和支撑后板；Further, the support frame includes: a support front plate, a support beam and a support rear plate;

所述支撑横梁的两端分别与所述支撑前板和所述支撑后板固定连接。Both ends of the support beam are respectively fixedly connected with the support front plate and the support rear plate.

进一步地，所述安装框架包括：安装前板、第二绝缘支撑座和安装后板；Further, the installation frame includes: an installation front plate, a second insulating support base and an installation rear plate;

所述安装前板一端与所述支撑前板的下端固定连接，其另一端与所述第二绝缘支撑座的一侧固定连接；One end of the mounting front plate is fixedly connected to the lower end of the supporting front plate, and the other end is fixedly connected to one side of the second insulating support base;

所述安装后板一端与所述支撑后板的下端固定连接，其另一端与所述第二绝缘支撑座和所述安装前板连接侧相对的一侧固定连接。One end of the installation rear plate is fixedly connected to the lower end of the support rear plate, and the other end is fixedly connected to the side opposite to the connecting side of the second insulating support base and the installation front plate.

本发明实施例的上述技术方案具有如下有益的技术效果：The above-mentioned technical solutions of the embodiments of the present invention have the following beneficial technical effects:

通过依据干燥空气、氮气的电性能特性，优化电场分布，满足了对多种类型气体绝缘性能的要求，既可以作为SF6开关使用，也可以作为环保型开关使用，且采用双断口结构，提高了结构的紧凑性，并提升了开关装置的绝缘性能，防止了误操作。By optimizing the electric field distribution according to the electrical performance characteristics of dry air and nitrogen, it meets the requirements for various types of gas insulation performance. It can be used as an SF 6 switch or an environmentally friendly switch. The compactness of the structure is improved, the insulation performance of the switchgear is improved, and misoperation is prevented.

附图说明Description of drawings

图1是本发明实施例提供的PT柜开关装置立体示意图；1 is a three-dimensional schematic diagram of a PT cabinet switchgear provided by an embodiment of the present invention;

图2是本发明实施例提供的PT柜开关装置的隔离、接地开关分闸状态示意图；2 is a schematic diagram of the disconnection and grounding switches of the PT cabinet switchgear provided in an embodiment of the present invention;

图3是本发明实施例提供的PT柜开关装置的隔离开关合闸状态的示意图；3 is a schematic diagram of a closed state of an isolation switch of a PT cabinet switchgear provided by an embodiment of the present invention;

图4是本发明实施例提供的PT柜开关装置的接地开关合闸状态的示意图；4 is a schematic diagram of a grounding switch closing state of a PT cabinet switchgear provided by an embodiment of the present invention;

图5是本发明实施例提供的PT柜开关装置隔离开关组件结构示意图。5 is a schematic structural diagram of an isolation switch assembly of a PT cabinet switchgear provided by an embodiment of the present invention.

附图标记：Reference number:

11、支撑框架，111、支撑前板，112、支撑横梁，113、支撑后板，12、安装框架，121、安装前板，122、第二绝缘支撑座，123、安装后板，13、开关传动轴，14、隔离开关组件，141、隔离开关动刀，142、隔离刀套，15、隔离静触头，16、静端静触头，17、接地静触头，18、负载连接铜排，19、母线连接铜排，20、第一绝缘支撑座。11. Supporting frame, 111, Supporting front plate, 112, Supporting beam, 113, Supporting rear plate, 12, Mounting frame, 121, Mounting front plate, 122, Second insulating support base, 123, Mounting rear plate, 13, Switch Drive shaft, 14, isolating switch assembly, 141, isolating switch moving knife, 142, isolating knife sleeve, 15, isolating static contact, 16, static end static contact, 17, grounding static contact, 18, load connection copper bar , 19, the busbar is connected to the copper bar, 20, the first insulating support seat.

具体实施方式Detailed ways

为使本发明的目的、技术方案和优点更加清楚明了，下面结合具体实施方式并参照附图，对本发明进一步详细说明。应该理解，这些描述只是示例性的，而并非要限制本发明的范围。此外，在以下说明中，省略了对公知结构和技术的描述，以避免不必要地混淆本发明的概念。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

图1是本发明实施例提供的PT柜开关装置立体示意图。FIG. 1 is a three-dimensional schematic diagram of a PT cabinet switch device provided by an embodiment of the present invention.

图2是本发明实施例提供的PT柜开关装置的隔离、接地开关分闸状态示意图。FIG. 2 is a schematic diagram of the open state of the isolation and grounding switches of the PT cabinet switchgear provided by the embodiment of the present invention.

请参照图1和图2，本发明实施例提供一种用于12kV的PT柜开关装置，包括：支撑框架11、安装框架12、开关传动轴13、隔离开关组件14、隔离静触头15、静端静触头16、接地静触头17和第一绝缘支撑座20；支撑框架11与安装框架12固定连接；第一绝缘支撑座20设置于支撑框架11上，开关传动轴13与安装框架12转动连接；隔离开关组件14设置于开关传动轴13上，并可沿开关传动轴13的轴向转动预设角度；接地静触头17设置于支撑框架11上，隔离静触头15设置于安装框架12上，静端静触头16设置于第一绝缘支撑座20上；隔离静触头15、静端静触头16和接地静触头17分别沿开关传动轴13轴向设置；开关传动轴13转动带动隔离开关组件14分别与隔离静触头15、静端静触头16和接地静触头17连接，以实现静端静触头16和隔离静触头15的连接或隔离静触头15和接地静触头17的连接。1 and 2, an embodiment of the present invention provides a PT cabinet switchgear for 12kV, including: a support frame 11, a mounting frame 12, a switch drive shaft 13, an isolation switch assembly 14, an isolation static contact 15, The static end static contact 16, the grounding static contact 17 and the first insulating support base 20; the support frame 11 is fixedly connected with the mounting frame 12; the first insulating support base 20 is arranged on the support frame 11, and the switch drive shaft 13 is connected to the mounting frame 12 is connected in rotation; the isolation switch assembly 14 is arranged on the switch transmission shaft 13 and can be rotated by a preset angle along the axial direction of the switch transmission shaft 13; On the installation frame 12, the static end static contact 16 is arranged on the first insulating support base 20; the isolation static contact 15, the static end static contact 16 and the grounding static contact 17 are respectively arranged axially along the switch transmission shaft 13; the switch The rotation of the transmission shaft 13 drives the isolation switch assembly 14 to connect with the isolation static contact 15, the static terminal static contact 16 and the grounding static contact 17 respectively, so as to realize the connection between the static terminal static contact 16 and the isolation static contact 15 or the isolation static contact. The connection between the contact 15 and the grounding static contact 17.

上述技术方案通过依据干燥空气、氮气的电性能特性，优化电场分布，满足了对多种类型气体绝缘性能的要求，既可以作为SF6开关使用，也可以作为环保型开关使用，且采用双断口结构，提高了结构的紧凑性，并提升了开关装置的绝缘性能，防止了误操作。The above technical solution meets the requirements for various types of gas insulation performance by optimizing the electric field distribution according to the electrical performance characteristics of dry air and nitrogen. It can be used as an SF 6 switch or an environmentally friendly switch. The structure improves the compactness of the structure, improves the insulation performance of the switch device, and prevents misoperation.

图3是本发明实施例提供的PT柜开关装置的隔离开关合闸状态的示意图。FIG. 3 is a schematic diagram of the closed state of the isolation switch of the PT cabinet switchgear provided by the embodiment of the present invention.

图4是本发明实施例提供的PT柜开关装置的接地开关合闸状态的示意图。FIG. 4 is a schematic diagram of the closed state of the grounding switch of the PT cabinet switchgear provided by the embodiment of the present invention.

图5是本发明实施例提供的PT柜开关装置隔离开关组件示意图。5 is a schematic diagram of an isolation switch assembly of a PT cabinet switchgear provided by an embodiment of the present invention.

具体的，请参照图3、图4和图5，隔离开关组件14包括三个隔离开关，隔离开关包括：隔离刀套142和隔离开关动刀141；隔离刀套142中部设有通孔，隔离刀套142相对的两侧设有缺口；开关传动轴13贯穿于三个隔离开关的通孔且与隔离刀套142固定连接；隔离开关动刀141设置于隔离刀套142的缺口内；开关传动轴13转动带动隔离开关动刀141分别与静端静触头16和隔离静触头15连接，或，分别与隔离静触头15和接地静触头17连接。如图3所示，隔离开关组件分别与静端静触头16和隔离静触头15连接，PT柜开关装置为隔离开关合闸状态；如图4所示，隔离开关组件分别与与隔离静触头15和接地静触头17连接，PT柜开关装置为接地开关合闸状态。Specifically, please refer to FIGS. 3 , 4 and 5 , the isolation switch assembly 14 includes three isolation switches, and the isolation switches include: an isolation knife sleeve 142 and an isolation switch movable knife 141 ; a through hole is provided in the middle of the isolation knife sleeve 142 to isolate The two opposite sides of the knife sleeve 142 are provided with notches; the switch transmission shaft 13 penetrates through the through holes of the three isolation switches and is fixedly connected with the isolation knife sleeve 142; the isolation switch movable knife 141 is arranged in the gap of the isolation knife sleeve 142; The rotation of the shaft 13 drives the isolating switch moving knife 141 to connect with the static terminal static contact 16 and the isolating static contact 15 respectively, or connect with the isolating static contact 15 and the grounding static contact 17 respectively. As shown in Figure 3, the isolating switch assembly is respectively connected with the static terminal static contact 16 and the isolating static contact 15, and the PT cabinet switch device is in the isolating switch closed state; as shown in Figure 4, the isolating switch assembly is respectively connected with the isolating static contact The contact 15 is connected to the grounding static contact 17, and the PT cabinet switch device is in the grounding switch closed state.

具体的，隔离刀套142和/或隔离开关动刀141为圆弧形。Specifically, the isolation knife sleeve 142 and/or the isolation switch movable knife 141 are arc-shaped.

此外，PT柜开关装置还包括：负载连接铜排18和母线连接铜排19。In addition, the PT cabinet switchgear also includes: a load connection copper bar 18 and a busbar connection copper bar 19 .

负载连接铜排18固定设置于第一绝缘支撑座20底部，且分别与相应隔离静触头15固定连接；负载连接铜排18底部与负载侧连接。The load connection copper bars 18 are fixedly arranged on the bottom of the first insulating support base 20 and are respectively fixedly connected with the corresponding isolation static contacts 15 ; the bottom of the load connection copper bars 18 are connected to the load side.

母线连接铜排19固定设置于第一绝缘支撑座20顶部，且分别与相应的静端静触头16固定连接；母线连接铜排19顶端与母线侧连接。The busbar connecting copper bars 19 are fixedly arranged on the top of the first insulating support base 20 and are respectively fixedly connected with the corresponding static end static contacts 16; the tops of the busbar connecting copper bars 19 are connected to the busbar side.

进一步地，支撑框架11包括：支撑前板111、支撑横梁112和支撑后板113；支撑横梁112的两端分别与支撑前板111和支撑后板113固定连接。其中，接地静触头17的数量为3个，沿直线设置于所述支撑横梁112底部。Further, the support frame 11 includes: a support front plate 111 , a support beam 112 and a support rear plate 113 ; two ends of the support beam 112 are fixedly connected to the support front plate 111 and the support rear plate 113 respectively. The number of the grounding static contacts 17 is three, which are arranged on the bottom of the support beam 112 along a straight line.

进一步地，安装框架12包括：安装前板121、第二绝缘支撑座122和安装后板123；安装前板121一端与支撑前板111的下端固定连接，其另一端与第二绝缘支撑座122的一侧固定连接；安装后板123一端与支撑后板113的下端固定连接，其另一端与第二绝缘支撑座122和安装前板121连接侧相对的一侧固定连接。Further, the installation frame 12 includes: an installation front plate 121 , a second insulating support base 122 and an installation rear plate 123 ; one end of the installation front plate 121 is fixedly connected to the lower end of the supporting front plate 111 , and the other end of the installation front plate 121 is connected to the second insulation support base 122 One end of the installation rear plate 123 is fixedly connected to the lower end of the supporting rear plate 113 , and the other end is fixedly connected to the opposite side of the second insulating support base 122 and the connection side of the installation front plate 121 .

本发明实施例旨在保护一种PT柜开关装置，包括：支撑框架、安装框架、开关传动轴、隔离开关组件、隔离静触头、静端静触头、接地静触头和第一绝缘支撑座；支撑框架与安装框架固定连接；开关传动轴与安装框架转动连接；隔离开关组件设置于开关传动轴上，并可沿开关传动轴的轴向转动预设角度；接地静触头设置于支撑框架上，隔离静触头设置于安装框架上，静端静触头设置于第一绝缘支撑座上；隔离静触头、静端静触头和接地静触头分别沿开关传动轴轴向设置；开关传动轴转动带动隔离开关组件分别与隔离静触头、静端静触头和接地静触头连接，以实现静端静触头和隔离静触头的连接或隔离静触头和接地静触头的连接。上述技术方案具备如下效果：The embodiment of the present invention aims to protect a PT cabinet switchgear, including: a support frame, a mounting frame, a switch drive shaft, an isolation switch assembly, an isolation static contact, a static end static contact, a grounding static contact, and a first insulating support The support frame is fixedly connected with the installation frame; the switch drive shaft is rotatably connected with the installation frame; the isolating switch assembly is arranged on the switch drive shaft, and can be rotated by a preset angle along the axial direction of the switch drive shaft; the grounding static contact is arranged on the support On the frame, the isolation static contact is arranged on the installation frame, and the static end static contact is arranged on the first insulating support seat; the isolation static contact, the static end static contact and the grounding static contact are respectively arranged along the axial direction of the switch transmission shaft ;The rotation of the switch drive shaft drives the isolation switch assembly to connect with the isolation static contact, the static terminal static contact and the grounding static contact respectively, so as to realize the connection between the static terminal static contact and the isolating static contact or the isolation static contact and the grounding static contact. Contact connection. The above technical solution has the following effects:

通过依据干燥空气、氮气的电性能特性，优化电场分布，满足了对多种类型气体绝缘性能的要求，既可以作为SF6开关使用，也可以作为环保型开关使用，且采用双断口结构，提高了结构的紧凑性，并提升了开关装置的绝缘性能，防止了误操作。By optimizing the electric field distribution according to the electrical performance characteristics of dry air and nitrogen, it meets the requirements for various types of gas insulation performance. It can be used as an SF 6 switch or an environmentally friendly switch. The compactness of the structure is improved, the insulation performance of the switchgear is improved, and misoperation is prevented.

应当理解的是，本发明的上述具体实施方式仅仅用于示例性说明或解释本发明的原理，而不构成对本发明的限制。因此，在不偏离本发明的精神和范围的情况下所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。此外，本发明所附权利要求旨在涵盖落入所附权利要求范围和边界、或者这种范围和边界的等同形式内的全部变化和修改例。It should be understood that the above-mentioned specific embodiments of the present invention are only used to illustrate or explain the principle of the present invention, but not to limit the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention. Furthermore, the appended claims of this invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalents of such scope and boundaries.

Claims (7)

1. A PT cabinet switching device, characterized by comprising: the device comprises a supporting frame, an installation frame, a switch transmission shaft, an isolating switch assembly, an isolating fixed contact, a fixed end fixed contact, a grounding fixed contact and a first insulating supporting seat;
the supporting frame is fixedly connected with the mounting frame, the first insulating supporting seat is arranged on the supporting frame, and the switch transmission shaft is rotatably connected with the mounting frame;
the isolating switch assembly is arranged on the switch transmission shaft and can rotate for a preset angle along the axial direction of the switch transmission shaft;
the grounding fixed contact is arranged on the supporting frame, the isolating fixed contact is arranged on the mounting frame, and the fixed end fixed contact is arranged on the first insulating supporting seat;
the isolation static contact, the static end static contact and the grounding static contact are respectively arranged along the axial direction of the switch transmission shaft;
the switch transmission shaft rotates to drive the isolating switch assembly to be connected with the isolating fixed contact, the fixed end fixed contact and the grounding fixed contact respectively, so that the connection of the fixed end fixed contact and the isolating fixed contact or the connection of the isolating fixed contact and the grounding fixed contact is realized.
2. The PT cabinet switching apparatus of claim 1,
the isolator assembly includes three isolators, the isolators include: the isolating knife sleeve and the isolating switch moving knife;
the middle part of the isolating knife sleeve is provided with a through hole, and two opposite sides of the isolating knife sleeve are provided with notches;
the switch transmission shaft penetrates through the through holes of the three isolating switches and is fixedly connected with the isolating knife pouch;
the isolating switch moving knife is arranged in the gap of the isolating knife sleeve;
the switch transmission shaft rotates to drive the isolating switch moving knife to be respectively connected with the static end static contact and the isolating static contact, or respectively connected with the isolating static contact and the grounding static contact.
3. A PT cabinet switching arrangement according to claim 2,
the isolating knife sleeve and/or the isolating switch moving knife are arc-shaped.
4. The PT cabinet switchgear of claim 1, further comprising:
the load connecting copper bar is fixedly arranged at the bottom of the first insulating support seat and is respectively and fixedly connected with the corresponding isolating static contact;
the bottom of the load connecting copper bar is connected with the load side.
5. The PT cabinet switchgear of claim 1, further comprising:
the bus connecting copper bar is fixedly arranged at the top of the first insulating support seat and is respectively and fixedly connected with the corresponding static contact of the static end;
the top end of the bus connecting copper bar is connected with the bus side.
6. The PT cabinet switching apparatus of claim 1,
the support frame includes: a support front plate, a support cross beam and a support rear plate;
and two ends of the supporting cross beam are respectively fixedly connected with the supporting front plate and the supporting rear plate.
7. The PT cabinet switching apparatus of claim 1,
the mounting frame includes: mounting a front plate, a second insulating support seat and a rear plate;
one end of the mounting front plate is fixedly connected with the lower end of the supporting front plate, and the other end of the mounting front plate is fixedly connected with one side of the second insulating supporting seat;
one end of the mounting rear plate is fixedly connected with the lower end of the supporting rear plate, and the other end of the mounting rear plate is fixedly connected with the second insulating supporting seat and the side opposite to the connecting side of the mounting front plate.
CN202011049597.0A 2020-09-29 2020-09-29 A PT cabinet switch device Pending CN112133591A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
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CN109510098A (en) * 2018-11-19 2019-03-22 珠海许继电气有限公司 A kind of insulated switching installation
CN109637883A (en) * 2018-11-19 2019-04-16 珠海许继电气有限公司 A kind of switching device
CN109830911A (en) * 2019-01-10 2019-05-31 广东阿尔派电力科技股份有限公司 The gas-insulating and fully-enclosed all insulation looped network switch apparatus of novel environment friendly
KR102086949B1 (en) * 2019-04-11 2020-03-10 주식회사 에스에이치솔텍 The busbar for eco-friendly gas insulated load break switch to possess modular design of insulation parts
CN213366460U (en) * 2020-09-29 2021-06-04 珠海许继电气有限公司 PT cabinet switching device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203690142U (en) * 2013-12-15 2014-07-02 甘肃长城电工电器工程研究院有限公司 Isolating switch for potential transformer (PT) of gas-insulated high-voltage switchgear
EP3161845A1 (en) * 2014-06-26 2017-05-03 Siemens Aktiengesellschaft Static arc-striking contact assembly and grounding switch thereof
CN105280428A (en) * 2015-11-05 2016-01-27 北海银河开关设备有限公司 Double-break three-station load switch
CN109301745A (en) * 2018-10-30 2019-02-01 江苏南瑞帕威尔电气有限公司 A double-break three-position isolating switch in an environment-friendly gas-insulated ring network cabinet
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CN109830911A (en) * 2019-01-10 2019-05-31 广东阿尔派电力科技股份有限公司 The gas-insulating and fully-enclosed all insulation looped network switch apparatus of novel environment friendly
KR102086949B1 (en) * 2019-04-11 2020-03-10 주식회사 에스에이치솔텍 The busbar for eco-friendly gas insulated load break switch to possess modular design of insulation parts
CN213366460U (en) * 2020-09-29 2021-06-04 珠海许继电气有限公司 PT cabinet switching device

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