The utility model discloses a vacuum arc extinguishing chamber, which comprises a porcelain bottle, in which a static contact, a moving contact, a shielding cylinder and a bellows are arranged. The static contact is connected with a static cover plate arranged at one end of the porcelain bottle through a static conductive rod, and the dynamic contact is connected with a dynamic conductive rod. The dynamic conductive rod passes through a bellows and a moving cover plate arranged at the other end of the porcelain bottle, and the bellows pass through the dynamic cover plate. The ceramic bottle is fixed and sealed between the dynamic cover plate and the static cover plate, and the inner part of the ceramic bottle is provided with an annular groove. The shielding cylinder comprises a cylinder body consisting of a plurality of barrel segments sleeved together, the barrel segments are conical annulus, and the adjacent two barrel segments are fixed and connected by connecting columns, and the annular convex platform corresponding to the annular groove is arranged on the outer side of the barrel section. The utility model makes the shielding barrel into an annular arc-extinguishing grid structure, achieves the purpose of rapid arc-extinguishing, shortens the arc-extinguishing length, and further promotes the miniaturization of the arc-extinguishing chamber.
【技术实现步骤摘要】
一种真空灭弧室
本技术涉及断路器
,尤其涉及一种真空灭弧室。
技术介绍
真空断路器因其灭弧介质和灭弧后触头间隙的绝缘介质都是高真空而得名;其具有体积小、重量轻、适用于频繁操作的优点,在配电网中应用较为普及。真空灭弧室也叫真空开关管或真空泡,是真空开关的核心器件。它是用一对密封在真空中的电极(触头)和其它零件,借助真空优良的绝缘和熄弧性能,实现电路的关合或分断,在切断电源后能迅速熄弧并抑止电流的真空器件。屏蔽筒在真空灭弧室中的主要作用是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。屏蔽筒可由无氧铜、不锈钢、电工纯铁或铜铬合金等材料制成。申请公布号为CN105070583A的中国专利文献公布了一种带有屏蔽罩功能结构的绝缘外壳及其应用的真空灭弧室,带有屏蔽罩功能结构的绝缘外壳及其应用的真空灭弧室,该绝缘外壳包括相连接的两个绝缘外壳,设置在二者连接端的中央屏蔽罩,分别设置在二者非连接端的第一端部屏蔽罩和第二端部屏蔽罩;两个绝缘外壳内壁的对称位置上分别一体化设置有凸起台状结构,凸起台状结构的中间部分分别与绝缘外壳一体连接,两侧分别与绝缘外壳 ...
【技术保护点】
1.一种真空灭弧室,其特征在于:包括瓷瓶,所述瓷瓶腔体内设置静触头、动触头、屏蔽筒和波纹管,所述静触头通过静导电杆与设置在瓷瓶一端的静盖板连接,所述动触头与动导电杆连接,所述动导电杆穿过设置于瓷瓶另一端的波纹管和动盖板,波纹管穿过动盖板且与动盖板气密性连接,所述瓷瓶与动盖板、静盖板之间固定密封连接,所述瓷瓶内部设置环形凹槽;所述屏蔽筒包括由多个筒节相互套合组成的筒体,所述筒节为锥形环状,相邻两筒节之间通过连接柱固定连接,筒节外侧设置与所述环形凹槽对应的环形凸台。
【技术特征摘要】
1.一种真空灭弧室,其特征在于:包括瓷瓶,所述瓷瓶腔体内设置静触头、动触头、屏蔽筒和波纹管,所述静触头通过静导电杆与设置在瓷瓶一端的静盖板连接,所述动触头与动导电杆连接,所述动导电杆穿过设置于瓷瓶另一端的波纹管和动盖板,波纹管穿过动盖板且与动盖板气密性连接,所述瓷瓶与动盖板、静盖板之间固定密封连接,所述瓷瓶内部设置环形凹槽;所述屏蔽筒包括由多个筒节相互套合组成的筒体,所述筒节为锥形环状,相邻两筒节之间通过连接柱固定连接,筒节外侧设置与所述环形凹槽对应的环形凸台。2.根据权利要求1所述的一种真空灭弧室,其特征在于:所述筒节的锥度为...
【专利技术属性】
技术研发人员:翁明阳,王磊,
申请(专利权)人:国网河南省电力公司邓州市供电公司,
类型:新型
国别省市:河南,41
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