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真空灭弧室
真空灭弧室
Vacuum interrupter
按照开关型式不同有外屏蔽罩式陶瓷真空灭弧室、中间封接杯状纵磁场小型化真空灭弧室、内封接式玻璃泡灭弧室，其基本结构如下：
According to the type of switch, there are external shielded cover ceramic vacuum interrupters, small vacuum interrupters with cup shaped longitudinal magnetic field and inner sealing glass bubble extinguishing chamber, and their basic structure is as follows:
①气密绝缘系统(外壳)
Air tight insulation system (shell)
由陶瓷、玻璃或微晶玻璃制成的气密绝缘筒、动端盖板、定端盖板、不锈钢波纹管组成的气密绝缘系统是一个真空密闭容器。为了保证气密性，除了在封接式要有严格的操作工艺，还要求材料本身透气性和内部放气量小。
The air tight insulating tube made of ceramic, glass or glass ceramics, the moving end cover plate, the fixed end cover plate and the stainless steel corrugated pipe are a vacuum sealed container. In order to ensure air tightness, in addition to the strict operation process in the sealing type, it is also required that the material itself has small air permeability and low internal deflation.
②导电系统
(2) conducting system
由定导电杆、定跑弧面、定触头、动触头、动跑弧面、动导电杆构成。触头结构大致有三种：圆柱形触头、带有螺旋槽跑弧面的横向磁场触头、纵向磁场触头。目前采用纵磁场技术，此种灭弧室具有强而稳定的电弧开断能力。
The utility model is composed of a fixed guide pole, a fixed arc surface, a fixed contact, a moving contact, a moving arc surface and a moving guide pole. There are three kinds of contact structures: cylindrical contact, transverse magnetic field contact with spiral groove, longitudinal magnetic field contact. At present, the arc chamber has strong and stable arc breaking ability by using the longitudinal magnetic field technology.
③屏蔽系统
(3) shielding system
屏蔽罩是真空灭弧室中不可缺少的元件，并且有围绕触头的主屏蔽罩、波纹管屏蔽罩和均压用屏蔽罩等多种。主屏蔽罩的作用是：a防止燃弧过程中电弧生成物喷溅到绝缘外壳的内壁，从而降低外壳的绝缘强度。b改善灭弧室内部电场分布的均匀性，有利于降低局部场强，促进真空灭弧室小型化。c冷凝电弧生成物，吸收一部分电弧能量，有助于弧后间隙介质强度的恢复。
The shielding cover is an indispensable element in the vacuum interrupter, and there are many kinds of shielding cover around the contact, bellows shield and even pressure shield. The function of the main shield is that a prevents the arc generator from splashing into the inner wall of the insulation shell during the arcing process, thereby reducing the insulation strength of the enclosure. B improves the uniformity of the electric field distribution in the arc extinguishing chamber, which is conducive to reducing the local field strength and promoting the miniaturization of the vacuum interrupter. The C condensing arc generator absorbs part of the arc energy, which helps to restore the dielectric strength in the back arc gap.
Vacuum interrupter
按照开关型式不同有外屏蔽罩式陶瓷真空灭弧室、中间封接杯状纵磁场小型化真空灭弧室、内封接式玻璃泡灭弧室，其基本结构如下：
According to the type of switch, there are external shielded cover ceramic vacuum interrupters, small vacuum interrupters with cup shaped longitudinal magnetic field and inner sealing glass bubble extinguishing chamber, and their basic structure is as follows:
①气密绝缘系统(外壳)
Air tight insulation system (shell)
由陶瓷、玻璃或微晶玻璃制成的气密绝缘筒、动端盖板、定端盖板、不锈钢波纹管组成的气密绝缘系统是一个真空密闭容器。为了保证气密性，除了在封接式要有严格的操作工艺，还要求材料本身透气性和内部放气量小。
The air tight insulating tube made of ceramic, glass or glass ceramics, the moving end cover plate, the fixed end cover plate and the stainless steel corrugated pipe are a vacuum sealed container. In order to ensure air tightness, in addition to the strict operation process in the sealing type, it is also required that the material itself has small air permeability and low internal deflation.
②导电系统
(2) conducting system
由定导电杆、定跑弧面、定触头、动触头、动跑弧面、动导电杆构成。触头结构大致有三种：圆柱形触头、带有螺旋槽跑弧面的横向磁场触头、纵向磁场触头。目前采用纵磁场技术，此种灭弧室具有强而稳定的电弧开断能力。
The utility model is composed of a fixed guide pole, a fixed arc surface, a fixed contact, a moving contact, a moving arc surface and a moving guide pole. There are three kinds of contact structures: cylindrical contact, transverse magnetic field contact with spiral groove, longitudinal magnetic field contact. At present, the arc chamber has strong and stable arc breaking ability by using the longitudinal magnetic field technology.
③屏蔽系统
(3) shielding system
屏蔽罩是真空灭弧室中不可缺少的元件，并且有围绕触头的主屏蔽罩、波纹管屏蔽罩和均压用屏蔽罩等多种。主屏蔽罩的作用是：a防止燃弧过程中电弧生成物喷溅到绝缘外壳的内壁，从而降低外壳的绝缘强度。b改善灭弧室内部电场分布的均匀性，有利于降低局部场强，促进真空灭弧室小型化。c冷凝电弧生成物，吸收一部分电弧能量，有助于弧后间隙介质强度的恢复。
The shielding cover is an indispensable element in the vacuum interrupter, and there are many kinds of shielding cover around the contact, bellows shield and even pressure shield. The function of the main shield is that a prevents the arc generator from splashing into the inner wall of the insulation shell during the arcing process, thereby reducing the insulation strength of the enclosure. B improves the uniformity of the electric field distribution in the arc extinguishing chamber, which is conducive to reducing the local field strength and promoting the miniaturization of the vacuum interrupter. The C condensing arc generator absorbs part of the arc energy, which helps to restore the dielectric strength in the back arc gap.
