WO2013102284A1 - 一种氮气环网柜 - Google Patents

一种氮气环网柜 Download PDF

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Publication number
WO2013102284A1
WO2013102284A1 PCT/CN2012/000703 CN2012000703W WO2013102284A1 WO 2013102284 A1 WO2013102284 A1 WO 2013102284A1 CN 2012000703 W CN2012000703 W CN 2012000703W WO 2013102284 A1 WO2013102284 A1 WO 2013102284A1
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WO
WIPO (PCT)
Prior art keywords
moving contact
contact
disposed
power transmission
transmission device
Prior art date
Application number
PCT/CN2012/000703
Other languages
English (en)
French (fr)
Inventor
李敬锋
董强华
赵超
Original Assignee
苏州朗格电气有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2012200007952U external-priority patent/CN202454965U/zh
Priority claimed from CN201210000285.XA external-priority patent/CN102545088B/zh
Application filed by 苏州朗格电气有限公司 filed Critical 苏州朗格电气有限公司
Publication of WO2013102284A1 publication Critical patent/WO2013102284A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H2033/566—Avoiding the use of SF6
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/36—Driving mechanisms, i.e. for transmitting driving force to the contacts using belt, chain, or cord

Definitions

  • the invention relates to a nitrogen ring network cabinet, in particular to a nitrogen ring network cabinet which can realize the function of the switch device and has a compact structure and utilizes nitrogen as a shielding gas by only one operating mechanism, and belongs to the technical field of switch devices. Background technique
  • the existing ring network cabinet uses two operating mechanisms to respectively control the vacuum circuit breaker and the three-station switch, and a mechanical interlock device is added between the two operating mechanisms, so that the prior art has low reliability and high cost and causes The increased size of the equipment increases the space required to form the complete set of equipment.
  • the two-stage structure of the prior art increases the number of the conductor parts and the number of lap joints between the interconnections, the cost of the consumables is high, and the contact resistance of the lap joints causes an increase in the heat generation of the apparatus.
  • An object of the present invention is to provide a nitrogen ring network cabinet which can realize the function of a switch device by using only one operating mechanism, has a compact structure, and utilizes nitrogen as a shielding gas.
  • a nitrogen ring network cabinet including a vacuum break a road device, a rigid power transmission device, a lower electric conductor, a main bus, a main bus output end, an operating mechanism, and a sealed box;
  • the vacuum circuit breaker is fixed in a sealed box by a bracket;
  • the rigid power transmission device and the device The isolating switch moving contact of the vacuum circuit breaker is connected, and the lower electric conductor is sleeved on the three-position switch moving contact of the rigid power transmission device through the conductive spring;
  • the main bus bar is electrically connected to the lower electric conductor;
  • the main bus output end is disposed at an output end of the main bus bar;
  • the operating mechanism controls rotation of the sprocket of the rigid power transmission device; and
  • the sealed box body is filled with nitrogen gas as a shielding gas.
  • the vacuum circuit breaker includes a closing and holding tweezers, a movable conductive rod, an isolating switch moving contact, a closing and holding unlocking block, a closing spring, a moving contact, a static contact, an upper electric conductor, and a first a housing;
  • the first housing is provided with a hollow cavity;
  • the opening spring is sleeved on the movable conductive rod and disposed in the middle of the cavity of the first housing;
  • the movable contact and the movable conductive The top rods of the upper part of the rod are connected together;
  • the static contact is fixed on the top of the cavity and is spaced apart from the movable contact;
  • the closing and holding the pair of dice are arranged in the lower part of the movable conductive rod;
  • a pressure spring is disposed between the lower end side of the brake holding rafter and the inner wall of the cavity;
  • the middle portion of the closing holding rafter is provided with a protrusion, wherein the pro
  • the rigid power transmission device comprises a chain cage, a sprocket, a chain, a three-position switch moving contact, a second housing; the chain holder is U-shaped; the chain is disposed on the chain holder; the sprocket is arranged in combination with the chain ffi, when the sprocket rotates, the chain along Moving the chain cage; the three-position switch moving contact is disposed in the second housing through the conductive spring; the lower end of the three-position switch moving contact is connected to one end of the sprocket; The upper end of the contact is connected to the movable switch of the isolating switch; the isolating movable contact, the three-position switch moving contact, and the chain connected with the lower end of the three-position switch moving contact are disposed on the same vertical line.
  • the operating mechanism of the operating mechanism is provided with a grounding contact on the rotating shaft.
  • the invention has the beneficial effects that the nitrogen ring network cabinet of the invention utilizes a rigid power transmission device to control the opening/closing of the vacuum circuit breaker, has a compact structure, few parts and low cost, and at the same time, the invention utilizes nitrogen as a
  • the protective gas of the sealed box has environmental protection performance; the structure of the invention is simple and practical.
  • Figure 1 is a cross-sectional view of the nitrogen ring network cabinet of the present invention
  • a nitrogen ring network cabinet of the present invention including a vacuum circuit breaker, a rigid power transmission device, a lower electric conductor 17, a main bus bar 18, a main bus output terminal 19, an operating mechanism 20, and a closed casing.
  • the vacuum circuit breaker is fixed in the sealed box 10 through a bracket (not shown);
  • the rigid power transmission device is connected to the isolating movable contact of the vacuum circuit breaker, and the lower conductor ⁇ 7
  • the conductive spring 15 is sleeved on the three-station slamming contact 14 of the rigid power transmission device;
  • the main bus 18 is electrically connected to the lower conductor 17;
  • the main bus output 19 is disposed at the output of the main bus 18.
  • the operating mechanism 20 controls the rotation of the sprocket 12 of the rigid power transmission device; the sealed casing 10 is filled with nitrogen gas 23 as a shielding gas; and the vacuum circuit breaker includes a closing and holding tweezers 1
  • the opening spring 6 is sleeved on the movable conductive a rod 3 disposed in the middle of the cavity of the first housing 9;
  • the movable contact 7 is coupled to the top rod of the upper portion of the movable conductive rod 3;
  • the stationary contact 8 is fixed at the top of the cavity, and
  • the movable contact 7 is disposed at a distance from the movable contact 7; the closing and holding tweezers 1 are disposed in pairs at a lower portion of the movable conductive rod 3; and the closing spring
  • the chain holder 11 is of a ⁇ type; the chain 13 is disposed on the chain holder 11; the sprocket 12 is disposed in cooperation with the chain 13, and when the sprocket 12 rotates, the chain 13 moves along the chain holder 11.
  • the three-position switch moving contact 14 is disposed in the second housing 16 through the conductive spring 15; the lower end of the three-position switch moving contact 14 is connected to one end of the sprocket 12; the three-position switch The upper end of the movable contact 14 is connected to the isolating switch moving contact 4; the isolating switch moving contact 4, the three-position switch moving contact 14, and the chain 13 connected to the lower end of the three-position switch moving contact 14 are disposed at On the same vertical line; the operating mechanism 20 of the operating mechanism 20 is provided with a grounding Head 22.
  • the invention has the beneficial effects that the nitrogen ring network cabinet of the invention utilizes a rigid power transmission device to control the opening/closing of the vacuum circuit breaker, has a compact structure, few parts and low cost, and at the same time, the invention utilizes nitrogen as a
  • the protective gas of the sealed box has environmental protection performance; the structure of the invention is simple and practical.

Landscapes

  • Gas-Insulated Switchgears (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

一种氮气环网柜，包含真空断路器、刚性动力传递装置、下导电体（17）、主母线（18）、主母线输出端（19）、操作机构（20）、密闭式箱体（10）；该真空断路器通过支架固定在密闭式箱体内；该刚性动力传递装置与真空断路器的隔离开关动触头（4）相连，该下导电体通过导电弹簧（15）套设在刚性动力传递装置的三工位开关动触头（14）上；该主母线与下导电体电连接；该主母线输出端设置在主母线的输出端；该操作机构控制刚性动力传递装置的链轮（12）的转动；该密闭式箱体内充氮气作为保护气体。该氮气环网柜利用刚性动力传递装置来控制真空断路器的开/关，结构紧凑，零部件少，成本低，且该氮气环网柜利用氮气作为密闭箱体的保护气体，具有环保性能；结构简单、实用。

Description

一种氮气环网柜 技术领域
本发明涉及一种氮气环网柜，特别是一种只用一个操作机构即可 实现开关设备的功能、结构紧凑、利用氮气作为保护气体的氮气环网 柜， 属于开关设备技术领域。 背景技术
现有环网柜， 使用 2个操作机构分别控制真空断路器和三工位 开关，并且在两个操作机构之间要加上机械连锁装置，使得现有技术 的可靠性低、成本高并且造成设备体积增大，使得组成成套设备的所 需空间加大。
同时， 现有技术的两段性结构增加了导电体部件的数量及相互 连接之间的搭接面数量，耗材多成本高，并且搭接面接触电阻会导致 设备发热量的增大。
同时，现有环网柜的空间内充有 SF6作为保护气体，众所周知, SF6对大气层的危害是 C02的 23900倍， 严重危害人类赖以生存的大 气环境。 发明内容
本发明的目的在于提供一种只用一个操作机构即可实现开关设 备的功能、 结构紧凑、 利用氮气作为保护气体的氮气环网柜。
本发明是通过以下技术方案来实现的：一种氮气环网柜，包含真空断 路器、 刚性动力传递装置、下导电体、主母线、主母线输出端、操作 机构、 密闭式箱体； 所述真空断路器通过支架固定在密闭式箱体内； 所述刚性动力传递装置与所述真空断路器的隔离开关动触头相连，所 述下导电体通过导电弹簧套设在刚性动力传递装置的三工位开关动 触头上；所述主母线与下导电体电连接；所述主母线输出端设置在主 母线的输出端； 所述操作机构控制刚性动力传递装置的链轮的转动； 所述密闭式箱体内充氮气作为保护气体。
优选的， 所述真空断路器， 包含合闸保持挚子、动导电杆、 隔离 开关动触头、合闸保持解锁块、分闸弹簧、动触头、静触头、上导电 体、第一壳体；所述第一壳体上设置有中空的空腔；所述分闸弹簧套 设在动导电杆上，并设置在第一壳体的空腔中部；所述动触头与动导 电杆上部的顶杆连接在一起；所述静触头固定在空腔的顶部，且与动 触头间隔设置；所述合闸保持挚子成对的设置在动导电杆的下部；所 述合闸保持挚子的下端侧部与空腔内壁之间设置有压簧；所述合闸保 持挚子的中部设置有凸起， 所述凸起在使动触头与静触头保持接触 时,刚好卡住动导电杆的底部;所述合闸保持挚子的下部设置有斜面； 所述一对合闸保持挚子的斜面形成一个正立的 V型;所述合闸保持解 锁块设置在 V型内部；所述隔离开关动触头设置在合闸保持解锁块的 下部，可推动合闸保持解锁块的上下运动；所述上导电体分别与动导 电杆、 隔离开关动触头电连接。
优选的， 所述隔离开关动触头与上导电体之间设置有导电弹簧。 优选的，所述刚性动力传递装置，包含链条保持架、链轮、链条、 三工位开关动触头、第二壳体；所述链条保持架呈 U型； 所述链条设 置在链条保持架上； 所述链轮与链条 ffi合设置， 当链轮转动时，链条 沿着链条保持架运动；所述三工位开关动触头通过导电弹簧设置在第 二壳体内；所述三工位开关动触头的下端与链轮的一端相连；所述三 工位开关动触头的上端与隔离开关动触头相连； 所述隔离幵关动触 头、三工位开关动触头、与三工位开关动触头的下端相连的链条设置 在同一竖直线上。
优选的， 所述操作机构的操作机构转轴上设置有接地触头。
本发明的有益效果体现在：本发明所述的氮气环网柜，利用刚性 动力传递装置来控制真空断路器的开 /关， 结构紧凑， 零部件少， 成 本低， 同时，本发明利用氮气作为密闭箱体的保护气体， 具有环保性 能； 本发明结构简单、 实用。 附图说明
下面结合附图对本发明技术方案作进一步说明：
图 1为本发明所述的氮气环网柜的剖视图；
其中： 1、合闸保持挚子； 2、压簧； 3、动导电杆； 4、 隔离开关 动触头； 5、合闸保持解锬块； 6、分闸弹簧； 7、动触头； 8、静触头； 9、 第一壳体； 10、 密闭式箱体； 11、 链条保持架； 12、 链轮； 13、 链条； 14、 三工位开关动触头； 15、 导电弹簧； 16、 第二壳体； 17、 下导电体； 18、 主母线； 19、主母线输出端； 20、 操作机构； 21、操 作机构转轴； 22、 接地触头； 23、 氮气； 24、 上导电体。 具体实施方式
下面结合附图来说明本发明。
如附图 1所示为本发明的一种氮气环网柜，包含真空断路器、刚 性动力传递装置、 下导电体 17、主母线 18、主母线输出端 19、操作 机构 20、 密闭式箱体 i0; 所述真空断路器通过支架（未标出） 固定 在密闭式箱体 10内； 所述刚性动力传递装置与所述真空断路器的隔 离幵关动触头相连，所述下导电体 ί7通过导电弹簧 15套设在刚性动 力传递装置的三工位幵关动触头 14上； 所述主母线 18与下导电体 17电连接； 所述主母线输出端 19设置在主母线 18的输出端； 所述 操作机构 20控制刚性动力传递装置的链轮 12的转动；所述密闭式箱 体 10内充氮气 23作为保护气体；所述真空断路器，包含合闸保持挚 子 1、动导电杆 3、隔离开关动触头 4、合闸保持解锁块 5、分闸弹簧 6、 动触头 7、 静触头 8、 上导电体 24、 第一壳体 9; 所述第一壳体 9 上设置有中空的空腔；所述分闸弹簧 6套设在动导电杆 3上，并设置 在第一壳体 9的空腔中部；所述动触头 7与动导电杆 3上部的顶杆连 接在一起;所述静触头 8固定在空腔的顶部,且与动触头 7间隔设置; 所述合闸保持挚子 1成对的设置在动导电杆 3的下部；所述合闸保持 挚子 1的下端侧部与空腔内壁之间设置有压簧 2; 所述合闸保持挚子 1的中部设置有凸起（未标出）， 所述凸起在使动触头 7与静触头 8 保持接触时，刚好卡住动导电杆 3的底部；所述合闸保持挚子 1的下 部设置有斜面;所述一对合闸保持挚子 1的斜面形成一个正立的 V型; 所述合闸保持解锁块 5设置在 V型内部；所述隔离开关动触头 4设置 在合闸保持解锬块 5的下部， 可推动合闸保持解锁块 5的上下运动； 所述上导电体 27分别与动导电杆 3、 隔离开关动触头 4电连接； 所 述隔离开关动触头 4与上导电体 3之间设置有导电弹簧 15; 所述刚 性动力传递装置， 包含链条保持架 11、链轮 12、 链条 13、 三工位开 关动触头 14、 第二壳体 16; 所述链条保持架 11呈 ϋ型； 所述链条 13设置在链条保持架 11上； 所述链轮 12与链条 13配合设置， 当链 轮 12转动时， 链条 13沿着链条保持架 11运动； 所述三工位开关动 触头 14通过导电弹簧 15设置在第二壳体 16内； 所述三工位开关动 触头 14的下端与链轮 12的一端相连； 所述三工位开关动触头 14的 上端与隔离开关动触头 4相连； 所述隔离开关动触头 4、三工位开关 动触头 14、 与三工位开关动触头 14的下端相连的链条 13设置在同 一竖直线上；所述操作机构 20的操作机构转轴 21上设置有接地触头 22。
本发明的有益效果体现在：本发明所述的氮气环网柜，利用刚性 动力传递装置来控制真空断路器的开 /关， 结构紧凑， 零部件少， 成 本低， 同时，本发明利用氮气作为密闭箱体的保护气体， 具有环保性 能； 本发明结构简单、 实用。
以上仅是本发明的具体应用范例，对本发明的保护范围不构成任 何限制。凡采用等同变换或者等效替换而形成的技术方案，均落在本 发明权利保护范围之内。

Claims

权 利 要 求
1.一种氮气环网柜，其特征在于：包含真空断路器、刚性动力传 递装置、下导电体、主母线、主母线输出端、操作机构、密闭式箱体; 所述真空断路器通过支架固定在密闭式箱体内；所述刚性动力传递装 置与所述真空断路器的隔离开关动触头相连，所述下导电体通过导电 弹簧套设在刚性动力传递装置的三工位开关动触头上；所述主母线与 下导电体电连接；所述主母线输出端设置在主母线的输出端；所述操 作机构控制刚性动力传递装置的链轮的转动；所述密闭式箱体内充氮 气作为保护气体。
2.根据权利要求 1所述的氮气环网柜，其特征在于：所述真空断 路器， 包含合阐保持挚子、动导电杆、 隔离开关动触头、合闸保持解 锁块、分闸弹簧、动触头、静触头、上导电体、第一壳体； 所述第一 壳体上设置有中空的空腔；所述分闸弹簧套设在动导电杆上，并设置 在第一壳体的空腔中部；所述动触头与动导电杆上部的顶杆连接在一 起； 所述静触头固定在空腔的顶部， 且与动触头间隔设置； 所述合闸 保持挚子成对的设置在动导电杆的下部；所述合闸保持挚子的下端侧 部与空腔内壁之间设置有压簧； 所述合闸保持挚子的中部设置有凸 起，所述凸起在使动触头与静触头保持接触时，刚好卡住动导电杆的 底部；所述合闸保持挚子的下部设置有斜面；所述一对合阐保持挚子 的斜面形成一个正立的 V型； 所述合闸保持解锁块设置在 V型内部； 所述隔离开关动触头设置在合闸保持解锁块的下部，可推动合闹保持 解锁块的上下运动；所述上导电体分别与动导电杆、隔离开关动触头 电连接。
3.根据权利要求 1所述的氮气环网柜，其特征在于：所述隔离开 关动触头与上导电体之间设置有导电弹簧。
4.根据权利要求 1所述的氮气环网柜，其特征在于：所述刚性动 力传递装置， 包含链条保持架、链轮、链条、三工位开关动触头、第 二壳体；所述链条保持架呈 U型；所述链条设置在链条保持架上；所 述链轮与链条配合设置， 当链轮转动时， 链条沿着链条保持架运动； 所述三工位开关动触头通过导电弹簧设置在第二壳体内；所述三工位 开关动触头的下端与链轮的一端相连；所述三工位开关动触头的上端 与隔离开关动触头相连; 所述隔离开关动触头、 三工位开关动触头、 与三工位开关动触头的下端相连的链条设置在同一竖直线上。
5.根据权利要求 1所述的氮气环网柜，其特征在于：所述操作机 构的操作机构转轴上设置有接地触头。
PCT/CN2012/000703 2012-01-04 2012-05-21 一种氮气环网柜 WO2013102284A1 (zh)

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