WO2010031290A1 - 环氧浇注固体绝缘双隔离开关 - Google Patents

环氧浇注固体绝缘双隔离开关 Download PDF

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Publication number
WO2010031290A1
WO2010031290A1 PCT/CN2009/073347 CN2009073347W WO2010031290A1 WO 2010031290 A1 WO2010031290 A1 WO 2010031290A1 CN 2009073347 W CN2009073347 W CN 2009073347W WO 2010031290 A1 WO2010031290 A1 WO 2010031290A1
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WO
WIPO (PCT)
Prior art keywords
contact
contacts
isolating
switch
vacuum interrupter
Prior art date
Application number
PCT/CN2009/073347
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English (en)
French (fr)
Inventor
李文东
朱书明
李建
魏海波
刘天佐
Original Assignee
沈阳昊诚电力科技有限公司
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Application filed by 沈阳昊诚电力科技有限公司 filed Critical 沈阳昊诚电力科技有限公司
Publication of WO2010031290A1 publication Critical patent/WO2010031290A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66Vacuum switches
    • H01H33/666Operating arrangements
    • H01H33/6661Combination with other type of switch, e.g. for load break switches

Definitions

  • the invention relates to an electric high voltage switch, in particular to a fully insulated epoxy cast solid insulated double isolating switch.
  • Power switch is one of the key equipments in the power supply industry. It is used for the safe operation of power station generator sets. It is used as a switch for power transmission and transformation lines. It is one of the key components in relay protection, and it is used for safe power transmission. Function, mines, oil fields, enterprises are used as equipment for industrial power distribution and electrical traction. It seems that power switches play an important role in distributing electrical energy and protecting power distribution equipment.
  • the power switch currently used and the switchgear used with it are relatively large in size, and a large amount of SF6 gas is used, which can cause serious pollution to the environment, and the scalability of the power switch itself is poor, and the installation is inconvenient, sometimes due to The restrictions on the installation site, the actual installation or replacement of the power switch and the switchgear are difficult.
  • the reliability of the power switch and the switchgear is also poor due to factors such as insulation performance, material material, and use environment, which greatly increases manufacturing costs and operation and maintenance costs.
  • the current switchgear In order to improve the power supply reliability and power quality of the users, the current switchgear has determined the development of grid equipment to oil-free, high-security, high-reliability, miniaturization and integration, simplifying the voltage level, and building a double-loop network to make high voltage. Go deep into the load center and strengthen the technical plan of the city network structure. Therefore, it is required that a fully insulated switch and switchgear should have superior performance and characteristics such as full insulation, compact structure, small size, expandable, all-weather, easy to install, no maintenance, and environmental protection requirements to meet the power supply of the city and the rural network. Requirements.
  • the object of the present invention is to solve the problems that the current high-voltage switch and the switch cabinet are bulky, the SF6 gas arc-extinguishing energy can cause serious pollution to the environment, the expandability is poor, the installation is inconvenient, the reliability is poor, and the manufacturing cost and the operation and maintenance cost are high.
  • Providing a compact structure, small size, and operation and maintenance Epoxy cast solid insulated double isolating switch that is low, unaffected by the operating environment, can significantly reduce power infrastructure investment and reduce loss of transmission and feeder lines.
  • the epoxy cast solid insulated double isolating switch comprises a casing and three operating mechanisms of the same switch body and three finished parts corresponding to three phases of alternating currents A, B and C;
  • the switch body comprises a vacuum interrupter compartment and two upper and lower isolating switches of the same structure; the upper isolating switch, the vacuum interrupter compartment and the lower isolating switch are fixedly connected to each other, and the upper isolating switch is located in the vacuum interrupter compartment Above, the lower isolation switch is located under the vacuum interrupter compartment, and the horizontal installation direction is the same as the upper isolation switch, and the vertical installation direction is opposite to the upper isolation switch;
  • the upper and lower isolating switches include upper and lower busbar contacts, upper and lower isolated moving contacts, upper and lower grounding contacts, upper and lower isolating contacts, upper and lower intermediate contacts; and upper and lower busbar contacts
  • the heads are respectively located at the top of the upper and lower isolating switches, and the upper and lower busbars are provided with upper and lower busbars at the bottom, and are fixedly connected with one ends of the upper and lower busbars, and the other ends of the upper and lower busbars are upper and upper,
  • the lower isolating contact is fixedly connected; the upper and lower grounding contacts are respectively fixed with upper and lower grounding contacts and upper and lower isolating contacts, and the lower part of the upper part of the upper and lower isolating switches is fixedly mounted,
  • the lower intermediate contact, the upper and lower isolating contacts, the upper and lower intermediate contacts, and the lower and lower grounding contacts are respectively provided with the same contact bases, and the three contact bases of the same isolating switch are located at the same horizontal line
  • the center of the contact base is respectively provided with a sliding guide hole;
  • the sliding guide hole is provided with a commercially available finished part bracelet chain finger, and an upper and lower lead screw are respectively arranged in the sliding guide hole of the contact base of the upper and lower isolation switches,The front end of the lead screw is coupled with the insulating thread, and the rear end of the lead screw is coupled with the operating mechanism of the finished product;
  • the upper and lower isolated moving contacts are shaped like a tube, and the center of the upper and lower movable moving contacts are provided with through holes, and one ends of the upper and lower isolated moving contacts are respectively provided with upper and lower insulating wires, upper and lower isolation
  • the movable contacts are respectively fixedly connected with the insulating nut, and the two insulating cores are respectively sleeved on the upper and lower screws and
  • the lead screw is rotatably connected; the two ends of the upper and lower isolated moving contacts respectively correspond to the elastic contact of the bracelet contact fingers in the sliding guide holes on the contact bases of the upper and lower isolation contacts and the upper and lower intermediate contacts respectively
  • the rotation of the upper and lower screws respectively correspond to elastic contact between the upper and lower intermediate contacts and the contact fingers of the sliding guide holes on the contact bases of the upper and lower ground contacts;
  • the upper and lower isolating switches, the upper and lower grounding contacts, the upper and lower busbar contacts, the upper and lower isolating contacts, and the upper and lower intermediate contacts are respectively cast by a known technique using an epoxy resin to form a fully sealed integrated structure. Double isolation switch with the same structure;
  • the vacuum interrupter chamber comprises a vacuum interrupter and an insulating pull rod; the rear end of the insulating rod is connected with a rotating component of the operating mechanism at the right end of the switch body, and the front end of the insulating rod is connected with the movable end of the vacuum interrupter.
  • the end of the soft connection is fastened, and the other end of the upper soft connection is fastened to the bottom end of the contact base of the upper intermediate contact; the movable end of the vacuum interrupter is located at the static end of the vacuum interrupter
  • the two ends of the vacuum interrupter; the static end of the vacuum interrupter is fixedly connected to one end of the lower busbar, and the other end of the lower busbar is fixedly connected with the lower outlet contact;
  • the upper and lower isolating switches have three structural states: closing, opening and grounding.
  • the grounding state is designed to make the isolating switch in a safe state.
  • the grounding state is: the isolated moving contact is always backward with the screw rotating. Moving, the front end of the final isolated moving contact is in contact with the bracelet finger in the intermediate contact, and the rear end of the isolated moving contact is in contact with the bracelet finger in the contact base of the ground contact to complete the grounding process.
  • the above switch body is made of epoxy casting.
  • the epoxy cast solid insulated double isolating switch adopts a modular modular structure as shown in Figure 1.
  • the upper part is the upper isolation switch of the incoming line, and the lower part is the lower isolation switch of the cable output.
  • the configuration of the double isolation switch is convenient and safe. This switch is flexible and convenient. If you use the upper incoming line, AC power supply, B, C three-phase bus (can also be plugged into the cable), take one phase as an example: The current is transmitted to the upper isolation through the cable introduction device.
  • the upper busbar contact of the switch passes the upper busbar contact to the upper isolation contact.
  • the upper isolation switch If the upper isolation switch is in the closed state, the current flows from the upper isolation contact via the upper isolation movable contact to the upper intermediate contact, and the upper intermediate contact outputs The current is transmitted to the movable end of the vacuum interrupter via a soft connection, and the movable end and the static end of the vacuum interrupter can be separated or closed by the control of the operating mechanism.
  • the current output from the static end of the vacuum interrupter is transmitted to the lower intermediate middle through the lower lead busbar to the lower intermediate contact, and if the lower isolating switch is in the closed state, the current flows through The intermediate contact is transmitted to the lower isolation moving contact, and then is output to the lower busbar contact by the lower isolation moving contact to the lower isolation contact of the lower isolation switch, and the lower busbar contact transmits current to the cable to the external electrical connection.
  • the device eventually forms a conductive loop.
  • AC power supply, B, C three-phase busbar can also be plugged into the cable), taking one phase as an example, the power supply current is transmitted to the lower busbar contact of the lower isolation switch through the cable introduction device, and is touched by the lower busbar.
  • Head-to-down isolation contact if the lower isolation switch is in the closed state, the current passes through the lower isolation moving contact to the lower intermediate contact, and the current output from the lower intermediate contact to the lower lead busbar, through the lower lead busbar to the vacuum
  • the static end of the arc chamber can be separated or closed by the control of the operating mechanism so that the movable end and the static end of the vacuum interrupter can be separated.
  • the vacuum interrupter If the vacuum interrupter is in the closed state, the current output from the movable end of the vacuum interrupter is transmitted to the intermediate contact of the upper isolating switch via the soft connection. If the upper isolating switch is in the closed state, the current is passed through the upper intermediate contact. The upper movable contact is separated, and then the upper movable contact is outputted to the upper bus contact, and the upper bus contact transmits current to the feed cable to the external electrical device to form a conductive loop.
  • the invention adopts epoxy resin casting full insulation equipment, is not affected by the surrounding environment during operation, and is not affected by condensation and pollution. 2.
  • the invention has extremely high electrical safety performance, and there is no possibility of explosion when the switch is opened or the short-circuit current occurs.
  • the insulation of the invention is casted by a water-repellent epoxy resin, which does not have the risk of gas and liquid leakage, and does not pollute the environment.
  • the switch of the invention uses an epoxy resin to seal the cavity, and the seal is not affected by the outside air.
  • the present invention has two isolating switches that form two isolated fractures, i.e., the spacing between the upper and lower isolation contacts and the upper and lower intermediate contacts.
  • the line mode is flexible, you can go up the line, you can also enter the line.
  • the isolating switch of the invention has three states of closing, opening and grounding.
  • the grounding contact, the intermediate contact, the isolating contact and the busbar contact of the isolating switch of the invention are located on the same switch body, and are cast once, fully ensuring the concentricity of the three contacts, so that the transmission is reliable, the movable moving contact is
  • the bracelet fingers in the sliding guide holes on the contact base are elastically in close contact, and the contact is guilty.
  • the invention adopts the insulated screw drive, the transmission is stable, accurate and no noise. At the same time, due to the linear transmission of the isolated moving contact, the tubular connection between the isolated moving contact and the bracelet contact in the contact base is adopted. The structure can greatly improve the thermal stability of the power products.
  • the isolated moving contact of the present invention adopts a tubular structure, and the isolated moving contact of the structure has large current carrying capacity and good heat dissipation performance.
  • the vacuum interrupter, the lower lead busbar, the lower wire contact and the switch body of the present invention are molded at one time.
  • the invention has reasonable design, relatively simple manufacturing process, small volume, light weight, stable performance and reliable action, and has strong practicability and advancement in economy saving or in electrical product application, and has extremely high Electrical safety performance is a strong guarantee for power supply reliability. Reduce the preconditions for user investment. It should be noted that changes or modifications made without departing from the spirit and scope of the invention are within the scope of the invention.
  • Figure 1 is a schematic view showing the internal structure of the present invention.
  • 2 is a top plan view of the busbar chamber of the present invention.
  • the manufacture and installation of the epoxy cast solid insulated double isolating switch is highly technical and technical.
  • the casing 1 made of the thin metal plate of the present invention is isolated from the surrounding environment for protection and isolation. As shown in Figures 1 and 2.
  • the epoxy cast solid insulated double isolating switch comprises a casing 1 and three operating mechanisms 10 of the same structure and three finished parts corresponding to three phases of alternating currents A, B and C installed in the casing 1 ;
  • the switch body 33 comprises a vacuum interrupter compartment 12 and two identical upper and lower isolating switches 2 and 18; the upper isolating switch 2, the vacuum interrupter compartment 12 and the lower isolating switch 18 are fixedly connected to each other, and the upper isolating switch 2 is located Above the vacuum interrupter compartment 12, the lower isolating switch 18 is located below the vacuum interrupter compartment 12, and the horizontal mounting direction is the same as that of the upper isolating switch 2, and the vertical mounting direction is opposite to the upper isolating switch 2;
  • the upper and lower disconnecting switches 2 and 18 include upper and lower busbar contacts 32 and 22, upper and lower isolating movable contacts 4 and 20, upper and lower grounding contacts 11 and 14, and upper and lower isolating contacts 30 and 24, Upper and lower intermediate contacts 6 and 17; upper and lower busbar contacts 32 and 22 are respectively located at the top of upper and lower isolating switches 2 and 18, and upper and lower busbar contacts 32 and 22 are respectively provided with upper and lower mothers.
  • upper and lower lead screws 9 and 15 There are upper and lower lead screws 9 and 15, and the front ends of the upper and lower lead screws 9 and 15 are insulated from the top and bottom respectively.
  • the threaded ends 7 and 16 are threadedly coupled, and the rear ends of the upper and lower lead screws 9 and 15 are arranged as rotating ends;
  • the upper and lower isolated moving contacts 4 and 20 are tubular, and the centers of the upper and lower movable moving contacts 4 and 20 are respectively provided with upper and lower through holes 3 and 21, and the upper and lower movable movable contacts 4 and 20 are respectively provided.
  • One end is fixedly connected to the upper and lower insulating cores 7 and 16, respectively, and the two insulating cores 7 and 16 are respectively sleeved on the upper and lower lead screws 9 and 15 and respectively connected to the upper and lower lead screws 9 and 15 respectively.
  • the two ends of the upper movable moving contact 4 are elastically in close contact with the bracelet fingers in the upper sliding guide holes 34 of the upper isolating contact 4 and the upper base contact 6, or with the rotation of the upper lead screw 9
  • the bracelet contacts in the sliding guide holes 13 of the upper intermediate contact 6 and the upper grounding contact 11 are in elastic close contact; respectively, at the same time, the two ends of the lower movable moving contact 20 are respectively separated from the lower isolating contact 24 and
  • the bracelet fingers in the lower sliding guide holes 13 on the lower contact base 25 of the lower intermediate contact 17 are in elastic close contact or respectively contact with the lower intermediate contact 17 and the lower ground contact 14 with the rotation of the lower lead screw 15
  • the bracelet contact fingers in the sliding guide holes 13 on the head base 25 are in elastic close contact; this is an operation process of merging, dividing, and even grounding. With this kind of grounding Ways and operations can make maintenance personnel safer.
  • the upper and lower disconnecting switches 2 and 18, the upper and lower grounding contacts 11 and 14, the upper and lower busbar contacts 32 and 22, the upper and lower isolating contacts 30 and 24, and the upper and lower intermediate contacts 6 and 17 pass
  • the known technology uses epoxy resin to be respectively cast into a double-isolated switch with the same structure of the upper and lower structures;
  • the vacuum interrupter chamber 12 includes a vacuum interrupter 28 and an insulating rod 8; the rear end of the insulating rod 8 is connected with a rotating member of the operating mechanism 10 at the right end of the switch body 33, and the front end of the insulating rod 8 is vacuumed.
  • the movable end 19 of the arc chamber 28 is connected, and is fastened to the end of the upper soft joint 5, and the other end of the upper soft joint 5 is fastened to the bottom end of the contact base 29 of the upper intermediate contact 6;
  • the movable end 19 and the static end 27 of the arc chamber 28 are located at both ends of the vacuum interrupter 28; the static end 27 of the vacuum interrupter 28 is fixedly connected to one end of the lower lead bus 26, and the other end of the lower lead copper 26 is The lower intermediate contact 17 is fixedly connected;
  • the upper and lower isolating switches 2 and 18 have three states of closing, opening and grounding.
  • the grounding state is designed to make the isolating switch in a safe state.
  • the grounding state is: upper and lower isolated moving contacts 4 and 20
  • the upper and lower lead screws 9 and 15 are rotated to move backwards, and finally the front ends of the upper and lower movable movable contacts 4 and 20 are in contact with the upper and lower intermediate contacts 17 in the upper middle contact 17,
  • the rear ends of the lower isolating movable contacts 4 and 20 are in contact with the bracelet fingers in the upper and lower ground contacts 11 and 14, and the grounding process is completed.
  • the above switch body 33 is made of epoxy casting.

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  • Gas-Insulated Switchgears (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Description

环氧浇注固体绝缘双隔离开关
技术领域
本发明涉及的是电力高压开关,具体的是全绝缘的环氧浇注固体绝缘双 隔离开关。
背景技术
电力开关是供电行业的关键设备之一,用于发电站发电机组的安全运行 的保护, 用作于输变电线路的开关, 是继电保护中的关键部件之一, 起到安 全送电的作用, 矿山、 油田、 企业用作于工业配电和电气牵引的设备, 由此 看来电力开关起着分配电能、 保护配电设备的重要作用。
当前使用的电力开关及与其配套使用的开关柜体积较为偏大, 并大量使 用 SF6气体,能给环境带来严重的污染、就电力开关的本身来讲可扩展性差、 安装也不方便, 有时因安装场所的限制, 电力开关和开关柜的实际安装或更 换都有一定的难度。 也因为绝缘性能、 材料材质、 使用环境等因素使电力开 关和开关柜可靠性较差, 从而使制造成本和运行维护成本大大增加。 目前的开关设备为了提高用户供电可靠性和供电质量,确定了电网装备 向无油化、 高安全性、 高可靠性、 小型化、集成化方向发展, 简化电压等级, 建设双环网, 使高电压深入负荷中心, 加强城网结构的技术方案。 因此, 需 要一种全绝缘的开关和开关柜应具有全绝缘、 结构紧凑、 体积小、 可扩展、 全天候、安装方便、无需维护、符合环保要求等优越的性能和特点来满足城、 农网供电的要求。
发明内容
本发明的目的是针对当前高压开关和开关柜体积偏大、使用 SF6气体灭 弧能给环境带来严重污染、 可扩展性差、 安装不方便、 可靠性差, 以及制造 成本和运行维护成本高等问题, 而提供一种结构紧凑、 体积小、 运行维护成 本低、 不受运行环境影响、 能够明显减少电力设施投资和减少输、 馈电线路 损耗的环氧浇注固体绝缘双隔离开关。
上述的目的是通过以下技术方案来实现的:
环氧浇注固体绝缘双隔离开关, 包括壳体及装设在壳体内与交流 A、 B、 C三相相对应的三个结构相同的开关本体和三个成品件的操作机构;
所述的开关本体包括真空灭弧室舱和两个结构相同的上、 下隔离开关; 上隔离开关、 真空灭弧室舱和下隔离开关相互固定连接, 上隔离开关位于真 空灭弧室舱的上面, 下隔离开关位于真空灭弧室舱的下面, 且水平安装方向 与上隔离开关相同, 垂直安装方向与上隔离开关相对;
上、 下隔离开关包括上、 下母线触头、 上、 下隔离动触头、 上、 下接地 触头、 上、 下隔离触头、 上、 下中间触头; 所述的上、 下母线触头分别位于 上、 下隔离开关的顶部, 上、 下母线触头的底部设有上、 下母排, 并与上、 下母排的一端固定连接, 上、 下母排的另一端与上、 下隔离触头固定连接; 上、 下隔离开关的两端下部分别固定装设有上、 下接地触头和上、 下隔 离触头, 上、 下隔离开关中间部位的下部固定装设有上、 下中间触头, 上、 下隔离触头、 上、 下中间触头和上、 下接地触头的下部分别设置有结构相同 的触头底座, 同一个隔离开关的三个触头底座位于同一水平线, 触头底座的 中心分别设有滑动导孔; 滑动导孔内装设有市售成品件表链触指, 上、 下隔 离开关的触头底座的滑动导孔内分别设置一上、 下丝杠, 丝杠的前端与绝缘 丝母螺紋联接, 丝杠的后端与成品件操作机构相联接;
上述上、下隔离动触头形同管状,上、下隔离动触头的中心设置有通孔, 上、 下隔离动触头的一端分别对应设置有上、 下绝缘丝母, 上、 下隔离动触 头分别与 绝缘丝母固定连接, 两个绝缘丝母分别套设在上、 下丝杠上并与 丝杠转动连接; 上、 下隔离动触头的两端分别对应与上、 下隔离触头和上、 下中间触头的触头底座上的滑动导孔中的表链触指弹性紧密接触或随上、下 丝杠的转动而分别对应与上、 下中间触头和上、 下接地触头的触头底座上的 滑动导孔中的表链触指弹性紧密接触;
上述上、 下隔离开关、 上、 下接地触头、 上、 下母线触头、 上、 下隔离 触头和上、下中间触头通过公知技术用环氧树脂分别浇注成全密封一体结构 的上、 下结构相同的双隔离开关;
所述的真空灭弧室舱包括真空灭弧室和绝缘拉杆; 绝缘拉杆的后端与位 于开关本体右端的操作机构的转动部件相连接,绝缘拉杆的前端与真空灭弧 室的动端连接, 同时与上引软连接的一端紧固连接, 上引软连接的另一端与 上中间触头的触头底座的底端紧固连接; 真空灭弧室动端与真空灭弧室的静 端位于真空灭弧室的两端; 真空灭弧室静端与下引母排的一端固定连接, 下 引母排的另一端与下出线触头固定连接;
上、 下隔离开关具有合闸、 分闸和接地三种结构状态, 接地状态是为了 使本隔离开关处于安全状态而设计的, 接地状态是: 隔离动触头随着丝杠转 动而一直向后移动, 最终隔离动触头的前端与中间触头内的表链触指相接 触, 隔离动触头的后端与接地触头的触头底座内的表链触指相接触, 而完成 接地过程。
上述开关本体采用环氧浇注制成。
环氧浇注固体绝缘双隔离开关的原理及工作程序:
环氧浇注固体绝缘双隔离开关总体采用单元型模块化结构, 见附图 1所 示。 上部为进线的上隔离开关, 下部为电缆输出的下隔离开关, 双隔离开关 的构造形式既方便又安全。 本开关进线方式灵活方便, 如果采用上进线, 交流电源 、 B、 C三相 母线 (也可为电缆的插接), 以一相为例叙述如下: 通过电缆引进装置将电 流传递给上隔离开关的上母线触头, 经上母线触头到上隔离触头, 倘若上隔 离开关在关合状态, 电流从上隔离触头经上隔离动触头到上中间触头, 上中 间触头输出的电流经软连接传递给真空灭弧室动端, 通过操作机构的控制, 使真空灭弧室的动端与静端能分开或关合。 若真空灭弧室在关合状态, 从真 空灭弧室的静端输出的电流经下引母排至下中间触头传递给下隔离中间出 头, 如若下隔离开关在关合状态, 电流经下中间触头传递到下隔离动触头, 然后通过下隔离动触头到下隔离开关的下隔离触头, 输出至下母线触头, 下 母线触头将电流传送给电缆, 接到外接的电气设备, 最终形成导电回路。
如果采用下进线, 电流流通顺序与上进线相反。 交流电源 、 B、 C三 相母线 (也可为电缆的插接), 以一相为例叙述如下, 电源电流通过电缆引 进装置将电流传递给下隔离开关的下母线触头, 经下母线触头到下隔离触 头, 倘若下隔离开关在关合状态, 电流通过下隔离动触头到下中间触头, 下 中间触头输出的电流到下引母排, 通过下引母排到真空灭弧室静端, 通过操 作机构的控制, 使真空灭弧室的动端与静端能分开或关合。 若真空灭弧室在 关合状态,从真空灭弧室的动端输出的电流经软连接传递给上隔离开关的中 间触头, 如果上隔离开关处于关合状态, 电流经上隔离中间触头至上隔离动 触头, 然后通过上隔离动触头到上隔离触头, 输出至上母线触头, 上母线触 头将电流传送给馈出电缆, 接到外接的电气设备, 最终形成导电回路。
本发明的特点:
1、本发明是采用环氧树脂浇注全绝缘设备, 运行中不受周围环境影响, 不受凝露和污秽的影响。 2、 本发明具有极高的电气安全性能, 开关开断及发生短路电流等事故 时不存在爆炸的可能性。
3、 本发明的绝缘是采用憎水性好的环氧树脂浇注, 不会有气体和液体 泄露的危险, 不会给环境造成污染。
4、 本发明开关采用环氧树脂密封腔体, 密封不受外界空气影响。
5、 本发明具有两个隔离开关, 可形成两个隔离断口, 即上、 下隔离触 头和上、 下中间触头相对应的间距。
6、 进线方式灵活, 可以上进线, 也可以下进线。
7、 本发明隔离开关具有合闸、 分闸和接地三种状态。
8、 本发明隔离开关接地触头、 中间触头、 隔离触头、 母线触头位于同 一开关本体上, 一次浇注成型, 充分保证其三触头的同心性, 使传动可靠、 隔离动触头与触头底座上的滑动导孔中的表链触指弹性紧密接触, 接触可 罪。
9、 本发明采用绝缘丝杠传动, 传动平稳、 准确、 无噪音, 同时由于隔 离动触头直线传动, 隔离动触头与触头底座内的表链触指之间采用管型插 接, 此种结构对电力产品的耐受动热稳定性能有很大提高。
10、本发明的隔离动触头采用管状结构, 此种结构的隔离动触头载流量 大、 散热性能好。
11、 本发明真空灭弧室、 下引母排、 下出线触头与开关本体一次浇注成 型。
本发明设计合理、制造过程相对较为简单, 体积小、重量轻、性能稳定、 动作可靠, 不论在经济节约方面或在电气产品应用上, 都具有极强的实用性 和先进性, 具有极高的电气安全性能, 是供电可靠性的强有力的保证、 也是 减少用户投资的前提条件。 需要说明的是: 在不改变本发明原理与构思的前提下, 所作出的改变或 变形, 均属于本发明的保护范围。
附图说明
图 1是本发明的内部结构示意图。 图 2是本发明母线室俯视示意图。
具体实施方式
实施例
环氧浇注固体绝缘双隔离开关的制造与安装具有很强的技术性和工艺 性, 本发明由金属薄板加工制成的壳体 1与周围环境相隔离, 起到防护和隔 离作用。 如附图 1、 2所示。
环氧浇注固体绝缘双隔离开关,包括壳体 1及装设在壳体 1内与交流 A、 B、 C三相相对应的三个结构相同的开关本体 33 和三个成品件的操作机构 10;
开关本体 33包括真空灭弧室舱 12和两个结构相同的上、 下隔离开关 2 和 18; 上隔离开关 2、 真空灭弧室舱 12和下隔离开关 18相互固定连接, 上 隔离开关 2位于真空灭弧室舱 12的上面,下隔离开关 18位于真空灭弧室舱 12的下面,且水平安装方向与上隔离开关 2相同,垂直安装方向与上隔离开 关 2相对;
上、 下隔离开关 2和 18包括上、 下母线触头 32和 22、 上、 下隔离动触 头 4和 20、 上、 下接地触头 11和 14、 上、 下隔离触头 30和 24、 上、 下中 间触头 6和 17; 上、 下母线触头 32和 22分别位于上、 下隔离开关 2和 18 的顶部, 上、 下母线触头 32和 22的底部分别设有上、 下母排 31和 23, 上、 下母排 31和 23的一端分别对应与上、 下母线触头 32和 22固定连接, 上、 下母排 31和 23的另一端分别对应与上、 下隔离触头 30和 24固定连接; 上、 下隔离开关 2和 18的两端下部分别对应固定装设有上、 下接地触 头 11、 14和上、 下隔离触头 30、 24, 上、 下隔离开关 2和 18的中间部位的 下部分别固定装设有上、下中间触头 6和 17;上隔离触头 30、上中间触头 6、 上接地触头 11和下隔离触头 24、 下中间触头 17、 下接地触头 11的下部分 别设置有结构相同的上触头底座 29和下触头底座 25, 同一个上隔离开关 2 或下隔离开关 18的三个触头底座 29或 25位于同一水平线, 上、 下触头底 座 29和 25的中心分别设有上、 下滑动导孔 34和 13 ; 上、 下滑动导孔 34 和 13内装设有市售成品件表链触指, 上、 下滑动导孔 34和 13内分别设置 有上、 下丝杠 9和 15, 上、 下丝杠 9和 15的前端分别与上、 下绝缘丝母 7 和 16螺紋联接, 上、 下丝杠 9和 15的后端设置为旋转端头;
上述上、 下隔离动触头 4和 20形同管状, 上、 下隔离动触头 4和 20的 中心分别设置有上、 下通孔 3和 21, 上、 下隔离动触头 4和 20的一端分别 与上、 下绝缘丝母 7和 16固定连接, 两个绝缘丝母 7和 16分别套设在上、 下丝杠 9和 15上并分别与上、 下丝杠 9和 15对应转动连接; 上隔离动触头 4的两端分别与上隔离触头 4和上中间触头 6的触头底座 29的上滑动导孔 34 中的表链触指弹性紧密接触或随上丝杠 9 的转动而分别与上中间触头 6 和上接地触头 11的滑动导孔 13中的表链触指弹性紧密接触; 与此同歩, 下 隔离动触头 20的两端分别与下隔离触头 24和下中间触头 17的下触头底座 25上的下滑动导孔 13中的表链触指弹性紧密接触或随下丝杠 15的转动而分 别与下中间触头 17和下接地触头 14的触头底座 25上的滑动导孔 13中的表 链触指弹性紧密接触; 这是合间、 分间以至接地的操作过程, 有了这种接地 方式和操作, 可使检修人员更为安全。
上述上、 下隔离开关 2和 18、 上、 下接地触头 11和 14、 上、 下母线触 头 32和 22、上、下隔离触头 30和 24和上、下中间触头 6和 17通过公知技 术用环氧树脂分别浇注成全密封一体的上、 下结构相同的双隔离开关;
所述的真空灭弧室舱 12包括真空灭弧室 28和绝缘拉杆 8; 绝缘拉杆 8 的后端与位于开关本体 33右端的操作机构 10的转动部件相连接,绝缘拉杆 8的前端与真空灭弧室 28的动端 19连接, 同时与上引软连接 5的一端紧固 连接, 上引软连接 5的另一端与上中间触头 6的触头底座 29的底端紧固连 接; 真空灭弧室 28的动端 19与静端 27位于真空灭弧室 28的两端; 真空灭 弧室 28的静端 27与下引铜排 26的一端固定连接,下引铜排 26的另一端与 下中间触头 17固定连接;
上、 下隔离开关 2和 18具有合闸、 分闸和接地三种状态, 接地状态是 为了使本隔离开关处于安全状态而设计的, 接地状态是: 上、 下隔离动触头 4和 20随着上、 下丝杠 9和 15转动而一直向后移动, 最终上、 下隔离动触 头 4和 20的前端与上中间触头及下中间触头 17内的表链触指相接触, 上、 下隔离动触头 4和 20的后端与上、 下接地触头 11和 14内的表链触指相接 触, 而完成接地过程。
上述开关本体 33采用环氧浇注制成。

Claims

权 利 要 求
1、 环氧浇注固体绝缘双隔离开关, 包括壳体(1)及装设在壳体(1) 内与交流 、 B、 C三相相对应的三个结构相同的开关本体(33)和三个操 作机构 (10); 其特征在于:
所述的开关本体(33)包括真空灭弧室舱(12)和两个结构相同的上、 下隔离开关 (2) 和 (18); 上隔离开关 (2)、 真空灭弧室舱 (12) 和下隔 离开关 (18)相互固定连接, 上隔离开关(2)位于真空灭弧室舱(12) 的 上面, 下隔离开关 (18) 位于真空灭弧室舱 (12) 的下面, 且水平安装方 向与上隔离开关 (2) 相同, 垂直安装方向与上隔离开关 (2) 相对;
上、 下隔离开关 (2) 和 (18) 包括上、 下母线触头 (32) 和 (22)、 上、 下隔离动触头 (4) 和 (20)、 上、 下接地触头 (11) 和 (14)、 上、 下 隔离触头 (30) 和 (24)、 上、 下中间触头 (6) 和 (17); 所述的上、 下母 线触头(32)和(22)分别位于上、 下隔离开关(2)和(18) 的顶部, 上、 下母线触头(32)和(22) 的底部分别设有上、 下母排(31)和(23), 上、 下母排 (31) 和 (23) 的一端分别与上、 下母线触头 (32) 和 (22) 固定 连接, 上、 下母排 (31) 和 (23) 的另一端分别与上、 下隔离触头 (30) 和 (24) 固定连接;
上、 下隔离开关(2)和 (18) 的两端下部分别对应固定装设有上、 下 接地触头(11)、 (14)和上、下隔离触头(30)、(24), 上、下隔离开关(2) 和 (18) 的中间部位分别固定装设有上、 下中间触头 (6) 和 (17); 上隔 离触头 (30)、 上中间触头 (6)、 上接地触头 (11) 和下隔离触头 (24)、 下中间触头(17)、 下接地触头(11) 的下部分别设置有结构相同的上触头 底座(29)和下触头底座(25), 同一个上隔离开关(2)或下隔离开关(18) 的三个触头底座 (29) 或 (25) 位于同一水平线, 上、 下触头底座 (29) 和 (25) 的中心分别设有上、 下滑动导孔(34) 和 (13); 上、 下滑动导孔
(34) 和 (13) 内分别装设有表链触指, 上、 下滑动导孔 (34) 和 (13) 内分别设置有上、 下丝杠 (9) 和 (15), 上、 下丝杠 (9) 和 (15) 的前端 分别与上、 下绝缘丝母 (7) 和 (16) 螺紋连接, 上、 下丝杠 (9) 和 (15) 的后端设置为旋转端头;
上述上、下隔离动触头(4)和(20)形同管状, 上、下隔离动触头(4) 和 (20) 的中心分别设置有上、 下通孔 (3) 和 (21), 上、 下隔离动触头
(4) 和 (20) 的一端分别与上、 下绝缘丝母 (7) 和 (16) 固定连接, 上、 下两个绝缘丝母 (7) 和 (16) 分别套设在上、 下丝杠 (9) 和 (15) 上并 分别与上、 下丝杠 (9) 和 (15) 对应转动连接; 上隔离动触头 (4) 的两 端分别与上隔离触头 (4) 和上中间触头 (6) 的触头底座 (29) 的上滑动 导孔(34) 中的表链触指弹性紧密接触或随上丝杠(9) 的转动而分别与上 中间触头 (6)和上接地触头 (11) 的滑动导孔(13) 中的表链触指弹性紧 密接触; 与此同歩, 下隔离动触头 (20) 的两端分别与下隔离触头 (24) 和下中间触头 (17) 的下触头底座 (25) 上的下滑动导孔 (13) 中的表链 触指弹性紧密接触或随下丝杠 (15) 的转动而分别与下中间触头 (17) 和 下接地触头 (14) 的触头底座 (25) 上的滑动导孔 (13) 中的表链触指弹 性紧密接触; 上、 下隔离开关(2) 和 (18)具有合闸、 分闸和接地三种结 构状态;
上述上、 下隔离开关 (2) 和 (18)、 上、 下接地触头 (11) 和 (14)、 上、 下母线触头 (32) 和 (22)、 上、 下隔离触头 (30) 和 (24) 和上、 下 中间触头(6)和 (17)采用环氧树脂分别浇注成全密封一体的上、 下同样 结构的双隔离开关;
所述的真空灭弧室舱 (12) 包括真空灭弧室 (28 ) 和绝缘拉杆 (8 ); 绝缘拉杆(8) 的后端与位于开关本体(33 )右端的操作机构 (10) 的转动 部件相连接, 绝缘拉杆(8) 的前端与真空灭弧室(28)的动端(19)连接, 同时与上引软连接 (5 ) 的一端紧固连接, 上引软连接 (5 ) 的另一端与上 中间触头 (6) 的触头底座 (29) 的底端紧固连接; 真空灭弧室 (28) 的动 端 (19) 与静端 (27) 位于真空灭弧室 (28 ) 的两端; 真空灭弧室 (28 ) 的静端 (27) 与下引铜排 (26) 的一端固定连接, 下引铜排 (26) 的另一 端与下中间触头 (17) 固定连接。
2、根据权利要求 1所述的环氧浇注固体绝缘双隔离开关,其特征在于: 上述开关本体 (33 ) 采用环氧树脂浇注。
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