CN105280427A - Single-phase isolation switch and isolation switch using same - Google Patents
Single-phase isolation switch and isolation switch using same Download PDFInfo
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- CN105280427A CN105280427A CN201510840851.1A CN201510840851A CN105280427A CN 105280427 A CN105280427 A CN 105280427A CN 201510840851 A CN201510840851 A CN 201510840851A CN 105280427 A CN105280427 A CN 105280427A
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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
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/32—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with rectilinearly-movable contact
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Abstract
本发明涉及一种隔离开关单相及使用该隔离开关单相的隔离开关，一种隔离开关包括三个隔离开关单相，各隔离开关单相均包括轴线沿左右方向延伸的筒体、设置于筒体内部的驱动机构、静触头和可左右移动的动触头，驱动机构包括转动装配于筒体的筒壁上的传动杆、与动触头固连的齿条和固设于传动杆上的并与齿条啮合传动的齿轮，传动杆的一端传动连接有用于输入扭矩的摇柄。通过摇柄对隔离开关进行手动分闸，可以明确感受到隔离开关的分断状态，以保证故障维修时或者检修时工作人员的人身安全。
The invention relates to a single-phase isolating switch and an isolating switch using the single-phase isolating switch. An isolating switch includes three single-phase isolating switches. The drive mechanism inside the cylinder, the static contact and the movable contact that can move left and right. The drive mechanism includes a transmission rod that is rotatably assembled on the cylinder wall of the cylinder, a rack that is fixedly connected with the movable contact, and a rack that is fixed on the transmission rod. The gear on the top and meshes with the rack for transmission, and one end of the transmission rod is connected with a rocker for input torque. Manual opening of the isolating switch through the crank handle can clearly feel the breaking state of the isolating switch, so as to ensure the personal safety of the staff during fault maintenance or overhaul.
Description
技术领域 technical field
本发明涉及一种隔离开关单相机使用该隔离开关单相的隔离开关。 The invention relates to a single-phase isolating switch using the isolating switch and single-phase isolating switch.
背景技术 Background technique
在电路系统中，当线路出现故障或者需要检修时，断路器跳闸，此时隔离开关起到了切断小电流或者提供明显端口的作用，以保障维修或者检修时工作人员的安全。通常情况下，隔离开关有两种形式，敞开式和气体绝缘金属封闭式，敞开式隔离开关直接暴露在空气中，分闸时可看到明显断口，但体积大、较为笨重。气体绝缘金属封闭式隔离开关体积小、可靠性高，得到了广泛应用，气体绝缘金属封闭式隔离开关一搬包括三个隔离开关单相，每个隔离开关单相均包括筒体，各筒体中均设置有动触头、静触头和驱动动触头动作的驱动机构，驱动机构大多数采用电驱动，然而由于气体绝缘金属封闭式隔离开关的封闭性，操作人员不能直接观察和明显感受其是否处于分断状态。 In the circuit system, when the line fails or needs to be repaired, the circuit breaker trips. At this time, the isolating switch plays the role of cutting off the small current or providing an obvious port to ensure the safety of the staff during maintenance or repair. Normally, there are two types of isolating switch, open type and gas-insulated metal-enclosed type. The open type isolating switch is directly exposed to the air, and an obvious fracture can be seen when the switch is opened, but it is bulky and cumbersome. The gas-insulated metal-enclosed isolating switch is small in size and high in reliability, and has been widely used. The gas-insulated metal-enclosed isolating switch includes three single-phase isolating switches, and each single-phase isolating switch includes a cylinder. There are moving contacts, static contacts and driving mechanisms for driving the moving contacts. Most of the driving mechanisms are driven by electricity. However, due to the closed nature of the gas-insulated metal-enclosed isolating switch, the operator cannot directly observe and clearly feel Whether it is in the broken state.
发明内容 Contents of the invention
本发明的目的在于克服现有技术的缺点，提供一种通过摇柄进行手动操作以可以明确感受其分断状态的隔离开关单相，同时本发明的目的还在于提供一种使用该隔离开关单相的隔离开关。 The purpose of the present invention is to overcome the shortcomings of the prior art, and to provide a single-phase isolating switch that can be manually operated through a rocker so that its breaking state can be clearly felt. At the same time, the purpose of the present invention is to provide a single-phase isolating switch.
为实现上述目的，本发明的一种隔离开关单相采用如下技术方案：一种隔离开关单相，包括轴线沿左右方向延伸的筒体、设置于筒体内部的驱动机构、静触头和可左右移动的动触头，所述驱动机构包括转动装配于筒体的筒壁上的传动杆、与动触头固连的齿条和固设于传动杆上的并与齿条啮合传动的齿轮，传动杆的一端传动连接有用于输入扭矩的摇柄。 In order to achieve the above object, a single-phase isolating switch of the present invention adopts the following technical scheme: a single-phase isolating switch, including a cylinder whose axis extends along the left and right directions, a drive mechanism arranged inside the cylinder, a static contact and a movable The moving contact that moves left and right, the driving mechanism includes a transmission rod that is rotatably assembled on the cylinder wall of the cylinder, a rack that is fixedly connected with the moving contact, and a gear that is fixed on the transmission rod and meshes with the rack for transmission , one end of the transmission rod is connected with a rocker for input torque.
所述齿条设于动触头的末端，齿条与动触头偏心设置，齿轮的转动轴线与的动触头的轴线位于同一高度。 The rack is arranged at the end of the movable contact, the rack and the movable contact are arranged eccentrically, and the rotation axis of the gear is at the same height as the axis of the movable contact.
所述齿条为L形，齿条包括长度沿左右方向延伸的水平传动部分和设置于水平传动部分右端的竖直安装部分，所述动触头固定连接于齿条的竖直安装部分上。 The rack is L-shaped, and the rack includes a horizontal transmission part extending in the left-right direction and a vertical installation part arranged at the right end of the horizontal transmission part, and the moving contact is fixedly connected to the vertical installation part of the rack.
所述隔离开关单相还包括设置于筒体内部的筒形的动触头支座，动触头支座为阶梯轴形状，动触头左右导向移动装配于动触头支座的小径端的内孔中，传动杆转动装配于动触头支座的大径端的孔壁上。 The single-phase isolating switch also includes a cylindrical moving contact support arranged inside the cylinder body. The moving contact support is in the shape of a stepped shaft. In the hole, the transmission rod is rotatably assembled on the hole wall at the large diameter end of the moving contact support.
所述动触头支座的大径端的孔壁上相对设置有一对凸台，传动杆转动装配于凸台上。 A pair of bosses are oppositely arranged on the hole wall at the large-diameter end of the movable contact support, and the transmission rod is rotatably assembled on the bosses.
本发明的一种隔离开关采用如下技术方案：一种隔离开关，包括三个隔离开关单相，各隔离开关单相均包括轴线沿左右方向延伸的筒体、设置于筒体内部的驱动机构、静触头和可左右移动的动触头，所述驱动机构包括转动装配于筒体的筒壁上的传动杆、与动触头固连的齿条和固设于传动杆上的并与齿条啮合传动的齿轮，传动杆的一端传动连接有用于输入扭矩的摇柄。 An isolating switch of the present invention adopts the following technical scheme: an isolating switch includes three isolating switch single-phases, and each isolating switch single-phase includes a cylinder whose axis extends along the left and right directions, a driving mechanism arranged inside the cylinder, The static contact and the movable contact that can move left and right, the drive mechanism includes a transmission rod that is rotatably assembled on the cylinder wall of the cylinder, a rack that is fixedly connected with the movable contact, and a rack that is fixed on the transmission rod and connected with the tooth The gear meshes with the transmission rod, and one end of the transmission rod is connected with a rocker for input torque.
所述齿条设于动触头的末端，齿条与动触头偏心设置，齿轮的转动轴线与的动触头的轴线位于同一高度。 The rack is arranged at the end of the movable contact, the rack and the movable contact are arranged eccentrically, and the rotation axis of the gear is at the same height as the axis of the movable contact.
所述齿条为L形，齿条包括长度沿左右方向延伸的水平传动部分和设置于水平传动部分右端的竖直安装部分，所述动触头固定连接于齿条的竖直安装部分上。 The rack is L-shaped, and the rack includes a horizontal transmission part extending in the left-right direction and a vertical installation part arranged at the right end of the horizontal transmission part, and the moving contact is fixedly connected to the vertical installation part of the rack.
所述隔离开关单相还包括设置于筒体内部的筒形的动触头支座，动触头支座为阶梯轴形状，动触头左右导向移动装配于动触头支座的小径端的内孔中，传动杆转动装配于动触头支座的大径端的孔壁上。 The single-phase isolating switch also includes a cylindrical moving contact support arranged inside the cylinder body. The moving contact support is in the shape of a stepped shaft. In the hole, the transmission rod is rotatably assembled on the hole wall at the large diameter end of the moving contact support.
所述动触头支座的大径端的孔壁上相对设置有一对凸台，传动杆转动装配于凸台上。 A pair of bosses are oppositely arranged on the hole wall at the large-diameter end of the movable contact support, and the transmission rod is rotatably assembled on the bosses.
本发明的有益效果为：驱动机构包括转动装配于筒体的筒壁上的传动杆、与动触头固连的齿条和固设于传动杆上的并与齿条啮合传动的齿轮，传动杆的一端传动连接有用于输入扭矩的摇柄，通过摇柄对隔离开关进行手动分闸，可以明确感受到隔离开关的分断状态，以保证故障维修时或者检修时工作人员的人身安全。 The beneficial effects of the present invention are: the driving mechanism includes a transmission rod rotatably assembled on the cylinder wall of the cylinder, a rack fixedly connected with the movable contact, and a gear fixed on the transmission rod and meshed with the rack for transmission. One end of the rod is connected with a crank handle for input torque, through which the isolating switch can be manually opened, and the breaking state of the isolating switch can be clearly felt, so as to ensure the personal safety of the staff during fault maintenance or overhaul.
进一步的，齿条与动触头偏心设置，齿轮的转动轴线与的动触头的轴线位于同一高度，这样可以将齿条的厚度做成小于动触头直径，使齿轮有效利用壳体内部的在动触头的厚度方向上的空间，减小了齿轮与齿条的安装高度以较小隔离开关的体积。 Further, the gear rack and the moving contact are arranged eccentrically, and the rotation axis of the gear is at the same height as the axis of the moving contact. In this way, the thickness of the rack can be made smaller than the diameter of the moving contact, so that the gear can effectively use the internal space of the housing. The space in the thickness direction of the moving contact reduces the installation height of the gear and the rack to reduce the volume of the isolating switch.
附图说明 Description of drawings
图1为本发明的一种开关设备的一个实施例中的隔离装置的结构示意图； Fig. 1 is a structural schematic diagram of an isolating device in an embodiment of a switchgear of the present invention;
图2为图1在A-A处的剖视图。 Fig. 2 is a cross-sectional view at A-A of Fig. 1 .
具体实施方式 detailed description
一种隔离开关包括三个隔离开关单相，各隔离开关单相的结构如图1和2所示，均包括轴线沿左右方向延伸的筒体1、设置于筒体1内部的静触头8、可左右移动的动触头9、供动触头9左右导向移动安装的动触头支座2、供静触头8安装的静触头支座3和驱动动触头9左右移动的驱动装置，以其中一个隔离开关单相进行说明，驱动装置包括传动杆7、与动触头9固连的齿条18和固设于传动杆7上的与齿条18啮合传动的齿轮6，传动杆7的一端传动连接有用于输入扭矩的摇柄20。动触头支座2为阶梯轴形状包括大径端10和小径段11，动触头9左右导向移动装配于动触头支座2的小径段11的内孔中，齿条18为L形包括长度沿左右方向延伸的水平传动部分4和设置于水平传动部分4右端的竖直安装部分5，动触头9通过螺钉固定连接于齿条的竖直安装部分5上，齿条18与动触头9偏心设置，齿轮6的转动轴线与的动触头9的轴线位于同一高度，动触头支座2的大径端10的孔壁上相对设置有一对凸台17，传动杆7通过轴承转动装配于两个凸台17上，动触头支座2的小径端11的外侧设置有动触头屏蔽罩12，动触头支座2的小径端11上于动触头9的外侧设有动触头弹簧，静触头座3外侧安装有静触头屏蔽套13，静触头座3内部设置有用于与动触头9导电配合的静触头8，静触头座3上于静触头8的外侧设置有静触头弹簧。 An isolating switch includes three single-phase isolating switches. The structure of each single-phase isolating switch is shown in Figures 1 and 2, each of which includes a cylinder 1 whose axis extends in the left and right directions, and a static contact 8 arranged inside the cylinder 1. , the moving contact 9 that can move left and right, the moving contact support 2 that guides and moves the moving contact 9 left and right, the static contact support 3 that is installed for the static contact 8 and the drive that drives the moving contact 9 to move left and right The device is described with a single-phase isolation switch. The driving device includes a transmission rod 7, a rack 18 fixedly connected with the movable contact 9, and a gear 6 fixed on the transmission rod 7 and meshed with the rack 18 for transmission. One end of the rod 7 is transmission-connected with a rocker 20 for inputting torque. The moving contact support 2 is in the shape of a stepped shaft, including a large diameter end 10 and a small diameter section 11. The moving contact 9 guides and moves left and right and is assembled in the inner hole of the small diameter section 11 of the moving contact support 2. The rack 18 is L-shaped. It includes a horizontal transmission part 4 extending in the left and right directions and a vertical installation part 5 arranged at the right end of the horizontal transmission part 4. The movable contact 9 is fixedly connected to the vertical installation part 5 of the rack by screws, and the rack 18 is connected to the movable The contact 9 is set eccentrically, the rotation axis of the gear 6 is at the same height as the axis of the moving contact 9, a pair of bosses 17 are arranged on the hole wall of the large diameter end 10 of the moving contact support 2, and the transmission rod 7 passes through The bearing is rotatably assembled on two bosses 17, and the outer side of the small-diameter end 11 of the moving contact support 2 is provided with a moving contact shield 12, and the small-diameter end 11 of the moving contact support 2 is placed on the outer side of the moving contact 9 A moving contact spring is provided, a static contact shielding sleeve 13 is installed on the outside of the static contact seat 3, and a static contact 8 for electrically conducting cooperation with the moving contact 9 is arranged inside the static contact seat 3. A static contact spring is provided outside the static contact 8 .
传动杆7的一端通过轴销固连有用于向传动杆7传递扭矩的绝缘杆14，绝缘杆14的另一端通过销轴固连有用于向绝缘杆14传递扭矩动力的操作轴端15，筒体1的动力输入口处螺钉固连有法兰16，法兰16的内孔中设置有法兰轴承，操作轴端15通过法兰轴承转动装配于法兰16上，摇柄20的一端具有与操作轴端15相适配的用于向操作轴端15传递扭矩的适配部，通过摇柄20对隔离开关进行手动分闸，可以明确感受到隔离开关的分断状态，以保证故障维修时或者检修时工作人员的人身安全。 One end of the transmission rod 7 is fixedly connected with an insulating rod 14 for transmitting torque to the transmission rod 7 through a pivot pin, and the other end of the insulating rod 14 is fixed with an operating shaft end 15 for transmitting torque power to the insulating rod 14 through a pin shaft. The power input port of the body 1 is fixedly connected with a flange 16, and the inner hole of the flange 16 is provided with a flange bearing. The adapter part adapted to the operating shaft end 15 and used to transmit torque to the operating shaft end 15 can manually open the isolating switch through the crank handle 20, so that the breaking state of the isolating switch can be clearly felt, so as to ensure that when the fault is repaired Or the personal safety of the staff during maintenance.
该开关设备的工作过程为：当电力系统GIL线路出现故障或者需要检修时，断路器先跳闸，在操作隔离开关单相时，首先通过操作摇柄20带动操作轴端15转动，进而带动绝缘杆14转动，绝缘杆14带动传动杆7和齿轮6转动，然后齿轮6带动齿条18和动触头9运动，实现动触头9和静触头8的分离，完成分闸过程。当故障排除或者检修结束时，通过操作摇柄20带动操作轴端15反向转动，进而带动绝缘杆14转动，绝缘杆14带动传动杆7和齿轮6转动，然后齿轮6带动齿条18和动触头9运动，动触头9挤压静触头屏蔽罩13与静触头8接触，完成合闸过程。 The working process of the switchgear is as follows: when the GIL line of the power system fails or needs to be repaired, the circuit breaker trips first, and when the single-phase isolating switch is operated, the operating handle 20 first drives the operating shaft end 15 to rotate, and then drives the insulating rod 14 rotates, the insulating rod 14 drives the transmission rod 7 and the gear 6 to rotate, and then the gear 6 drives the rack 18 and the moving contact 9 to move, so as to realize the separation of the moving contact 9 and the static contact 8, and complete the opening process. When troubleshooting or overhaul is over, the operating handle 20 drives the operating shaft end 15 to rotate in the opposite direction, and then drives the insulating rod 14 to rotate, and the insulating rod 14 drives the transmission rod 7 and the gear 6 to rotate, and then the gear 6 drives the rack 18 and the moving gear. The contact 9 moves, and the moving contact 9 squeezes the static contact shield 13 to contact the static contact 8 to complete the closing process.
在本发明的其他实施例中，齿条的厚度与动触头也可以相同且同心设置，此时齿轮位于齿条的上方或下方；齿条也可以为直线形，齿条的一端固连于动触头的末端处；也可以不设置凸台，而直接将传动杆转动装配于动触头支座的大径端的孔壁上；动触头绝缘杆与传动杆也可以采用键连接以传递扭矩；摇柄也可以与绝缘杆直接固连此时省去操作轴端。 In other embodiments of the present invention, the thickness of the rack and the movable contact can also be the same and concentrically arranged. At this time, the gear is located above or below the rack; the rack can also be linear, and one end of the rack is fixedly connected to the At the end of the moving contact; it is also possible not to set the boss, but to directly rotate and assemble the transmission rod on the hole wall at the large diameter end of the moving contact support; the moving contact insulation rod and the transmission rod can also be connected by a key to transmit Torque; the rocker can also be directly fixed with the insulating rod and the operating shaft end is omitted at this time.
一种隔离开关单相的实施例与上述一种隔离开关的各实施例中的隔离开关单相的实施例相同，此处不再赘述。 An embodiment of a single-phase isolating switch is the same as the embodiment of a single-phase isolating switch in each embodiment of the above-mentioned isolating switch, and will not be repeated here.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018090549A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultra-high-voltage power line disconnector |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689542Y (en) * | 2003-07-10 | 2005-03-30 | 河南平高电气股份有限公司 | Separating and grounding valve with gas insulation |
| CN101074699A (en) * | 2006-05-19 | 2007-11-21 | 富准精密工业(深圳)有限公司 | Sliding bearing and fan therewith |
| CN201369277Y (en) * | 2009-01-09 | 2009-12-23 | 河南平高电气股份有限公司 | Disconnecting-grounding switch |
| CN202120806U (en) * | 2011-06-23 | 2012-01-18 | 苏州朗格电气有限公司 | Operating mechanism of directly operated type three-position disconnecting switch |
| CN102575660A (en) * | 2010-06-03 | 2012-07-11 | 丰田自动车株式会社 | Gas consumption system, fuel cell system and vehicle |
| CN103001379A (en) * | 2012-12-30 | 2013-03-27 | 台州市博洋机电有限公司 | External rotor electric machine |
| EP2787519A1 (en) * | 2013-04-03 | 2014-10-08 | Siemens Aktiengesellschaft | Drive mechanism for disconnecting a switch |
| CN204375584U (en) * | 2014-12-17 | 2015-06-03 | Abb技术有限公司 | Moving arcing contact device |
-
2015
- 2015-11-27 CN CN201510840851.1A patent/CN105280427A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2689542Y (en) * | 2003-07-10 | 2005-03-30 | 河南平高电气股份有限公司 | Separating and grounding valve with gas insulation |
| CN101074699A (en) * | 2006-05-19 | 2007-11-21 | 富准精密工业(深圳)有限公司 | Sliding bearing and fan therewith |
| CN201369277Y (en) * | 2009-01-09 | 2009-12-23 | 河南平高电气股份有限公司 | Disconnecting-grounding switch |
| CN102575660A (en) * | 2010-06-03 | 2012-07-11 | 丰田自动车株式会社 | Gas consumption system, fuel cell system and vehicle |
| CN202120806U (en) * | 2011-06-23 | 2012-01-18 | 苏州朗格电气有限公司 | Operating mechanism of directly operated type three-position disconnecting switch |
| CN103001379A (en) * | 2012-12-30 | 2013-03-27 | 台州市博洋机电有限公司 | External rotor electric machine |
| EP2787519A1 (en) * | 2013-04-03 | 2014-10-08 | Siemens Aktiengesellschaft | Drive mechanism for disconnecting a switch |
| CN204375584U (en) * | 2014-12-17 | 2015-06-03 | Abb技术有限公司 | Moving arcing contact device |
Non-Patent Citations (1)
| Title |
|---|
| 单欣安等: "《应用电工基础知识400问》", 31 January 2014, 中国电力出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018090549A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Ultra-high-voltage power line disconnector |
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Application publication date: 20160127 |