A monostable permanent magnet operating mechanism includes a moving iron core assembly, a braking coil, a permanent magnet and a static iron core assembly. The moving iron core assembly includes a moving iron core and a driving rod, which are fixed on the moving iron core. The static iron core assembly includes an inner static iron core, an outer static iron core and a mechanism fixing plate, and the inner static iron core and an outer static iron core are fixed on the mechanism fixing plate, and the inner static iron core and the outer static iron core are fixed on the mechanism fixing plate, and the inner static iron core are fixed on the mechanism fixing plate. The core is located inside the outer static iron core, the permanent magnet iron is between the inner static iron core and the outer static iron core, and the opening coil is between the inner static iron core and the outer static iron core. The lower end of the driving rod passes through the inner static iron core, and the opening spring is sleeved on the driving rod. The upper end of the opening spring touches the moving iron core, and the lower end of the opening spring touches the inner static iron core. The braking spring comprises an inner spring and an outer spring, the inner spring is placed inside the outer spring, and the rotation direction of the inner spring and the outer spring is opposite. The utility model has the advantages of simple structure, high reliability, fast opening speed, low energy consumption and maintenance-free.
【技术实现步骤摘要】
一种单稳态永磁操动机构
本技术涉及一种涉及断路器,特别涉及断路器的一种单稳态永磁操动机构。
技术介绍
目前,在电力系统配电领域中的断路器所配操动机构通常有电磁式、弹簧式和永磁式三种。相比较而言,永磁操动机构具有结构简单,零部件少,寿命长,可频繁操作等优点。永磁操动机构又分为双稳态和单稳态两种,其中单稳态永磁操动机构凭借其高可靠、分闸速度快、低能耗、免维护等诸多优点,日益引起人们的关注。单稳态永磁操动机构分闸过程是往线圈中通入反向电流,抵消永磁体的保持力,利用分闸弹簧进行分闸。目前市面上的单稳态永磁操动机构分闸弹簧外置,体积大,不利于产品小型化。也有分闸弹簧内置,但是由于永磁操动机构运动次数多,分闸弹簧安装空间小,导致分闸弹簧易疲劳,断路器分闸速度下降,可靠性低。
技术实现思路
为了克服已有单稳态永磁操动机构的结构复杂、可靠性较低、分闸速度较慢、能耗较高的不足,本技术提供了一种结构简单、可靠性高、分闸速度快、低能耗、免维护的单稳态永磁操动机构。本技术解决其技术问题所采用的技术方案是:一种单稳态永磁操动机构,包括动铁芯组件、分闸线圈、永磁铁和静铁芯组件,所述动铁芯组件包括动铁芯和驱动杆,所述驱动杆固定在动铁芯上;所述静铁芯组件包括内静铁芯、外静铁芯和机构固定板,所述内静铁芯、外静铁芯固定在所述机构固定板上,且内静铁芯位于外静铁芯的内部,所述永磁铁置于内静铁芯与外静铁芯之间,分闸线圈位于内静铁芯与外静铁芯之间;所述驱动杆的下端穿过所述内静铁芯,其特征在于:所述单稳态永磁操动机构还包括分闸弹簧,所述分闸弹簧套装在所述驱动杆上,所述分闸弹簧的上端顶触在动铁芯上,所述分闸 ...
【技术保护点】
1.一种单稳态永磁操动机构,包括动铁芯组件、分闸线圈、永磁铁和静铁芯组件,所述动铁芯组件包括动铁芯和驱动杆,所述驱动杆固定在动铁芯上;所述静铁芯组件包括内静铁芯、外静铁芯和机构固定板,所述内静铁芯、外静铁芯固定在所述机构固定板上,且内静铁芯位于外静铁芯的内部,所述永磁铁置于内静铁芯与外静铁芯之间,分闸线圈位于内静铁芯与外静铁芯之间;所述驱动杆的下端穿过所述内静铁芯,其特征在于:所述单稳态永磁操动机构还包括分闸弹簧,所述分闸弹簧套装在所述驱动杆上,所述分闸弹簧的上端顶触在动铁芯上,所述分闸弹簧的下端顶触在所述内静铁芯上,所述分闸弹簧包括内弹簧和外弹簧,内弹簧置于外弹簧内,内弹簧与外弹簧的旋向相反。
【技术特征摘要】
1.一种单稳态永磁操动机构,包括动铁芯组件、分闸线圈、永磁铁和静铁芯组件,所述动铁芯组件包括动铁芯和驱动杆,所述驱动杆固定在动铁芯上;所述静铁芯组件包括内静铁芯、外静铁芯和机构固定板,所述内静铁芯、外静铁芯固定在所述机构固定板上,且内静铁芯位于外静铁芯的内部,所述永磁铁置于内静铁芯与外静铁芯之间,分闸线圈位于内静铁芯与外静铁芯之间;所述驱动杆的下端穿过所述内静铁芯,其特征在于:所述单稳态永磁操动机构还包括分闸弹簧,所述分闸弹簧套装在所述驱动杆上,所述分闸弹簧的上...
【专利技术属性】
技术研发人员:吕恩林,朱庆荷,戴守祥,吴德祥,王竞如,刘坚钢,刘晓颖,蒋超奇,诸益栋,熊白云,孙跃,
申请(专利权)人:宁波耀华电气科技有限责任公司,
类型:新型
国别省市:浙江,33
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