CN1499539A - 磁路开关 - Google Patents

磁路开关 Download PDF

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CN1499539A
CN1499539A CNA021385726A CN02138572A CN1499539A CN 1499539 A CN1499539 A CN 1499539A CN A021385726 A CNA021385726 A CN A021385726A CN 02138572 A CN02138572 A CN 02138572A CN 1499539 A CN1499539 A CN 1499539A
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magnetic
iron core
magnet
conductive axis
interlayer
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CN1213445C (zh
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徐俊峰
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Jiangsu Ci Gu Science And Technology Co Ltd
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Abstract

本发明涉及一种用于打开和关闭永磁设备中磁场源的磁路开关。它包括有一个导磁材料的壳体,在壳体内有至少两个可沿其自身的轴心转动的导磁轴,各导磁轴相互平行并且位于同一水平高度,每个导磁轴中部设有夹层,在夹层中固定有可随导磁轴一同旋转的永磁材料的旋转磁体,每两个导磁轴之间有一个铁芯,在每个铁芯上方安置有永磁材料的顶部磁体,所述铁芯及顶部磁体均与壳体固定为一体,当磁路处于打开状态时,导磁轴内的夹层为垂直方向,夹层的宽度即为磁路间隙,此时每一个铁芯周围的两个旋转磁体和一个顶部磁体的磁场方向均同时与铁芯相向或同时与铁芯相背。本发明结构紧凑、易于获得较强的工作区磁场、磁场关闭彻底。

Description

磁路开关
技术领域
本发明涉及一种用于打开和关闭永磁设备中磁场源的磁路开关。
背景技术
目前,稀土永磁材料被越来越广泛地应用于各种使用永磁磁场的设备和场合,但永磁设备中,永磁磁场的关闭问题始终没有得到很好解决,现有技术一般是对永磁磁场加上一个反向磁场加以平衡,但都存在着以下缺陷:1、平衡点难掌握,再加上漏磁,往往造成工作区剩磁较大(即关闭不彻底)的现象;2、由于磁路间隙不可能设计得较大,因而所提供的工作区磁场深度不够深,仅具有较强的表面磁场强度,局限了其使用范围。
发明内容
本发明所要解决的技术问题是,提供一种结构紧凑、磁场关闭彻底、并且易于获得较强的工作区磁场。
本发明的磁路开关包括有一个导磁材料的壳体,该壳体的开口朝下,在壳体内有至少两个可沿其自身的轴心转动的导磁轴,各导磁轴相互平行,每个导磁轴中部设有夹层,在夹层中固定有可随导磁轴一同旋转的永磁材料的旋转磁体,每两个导磁轴之间有一个铁芯,在每个铁芯上方安置有永磁材料的顶部磁体,所述铁芯及顶部磁体均与壳体固定为一体,当磁路处于打开状态时,导磁轴内的夹层为垂直方向,夹层的宽度即为磁路间隙,此时每一个铁芯周围的两个旋转磁体和一个顶部磁体的磁场方向均同时与铁芯相向或同时与铁芯相背。
为了获得更大的磁场强度,在铁芯两侧,每一个导磁轴的上方还可安置有侧磁体,侧磁体与壳体固定为一体,其磁场方向与磁路打开时其下方的旋转磁体的磁场方向相同。在具有侧磁体的情况下,导磁轴的夹层内也可以没有旋转铁芯,而为一个空槽。
本发明的优点是:1、在磁路打开时,每个铁芯周围的三个方向上分布有磁体,并且各磁体的磁场方向均与铁芯相向或相背,这时的永磁磁路是围绕铁芯的一种聚磁结构,同时也是一种开放磁路,可以在工作区A形成较强的磁场(如图1、图3),而通过调整铁芯大小及磁路间隙,就可改变工作区的磁场深度,以适应不同的使用场合;2、当要关闭磁场时,可将导磁轴及旋转磁体转过90°,导磁轴的位置正好将磁路间隙填充起来,起到屏蔽工作区磁场的作用,此时永磁磁路是一种内部闭合磁路,只要导磁轴材料导磁性能足够好及参与屏蔽部分的导磁轴的材料足够多,就可将工作区的漏磁场控制到接近零磁场。
附图说明
图1是本发明一个实施例的结构示意图;
图2是图1所述实施例磁路关闭时的结构示意图;
图3是本发明第二个实施例的结构示意图;
图4是本发明第三个实施例的结构示意图;
图5是本发明第四个实施例的结构示意图。
具体实施方式
实施例一:如图1、图2所示,壳体1内有两个可沿其自身的轴心转动的导磁轴2,每个导磁轴中部的夹层3中固定有可随导磁轴一同旋转的永磁材料的旋转磁体4,两个导磁轴之间有一个铁芯5,在铁芯上方安置有一个永磁材料的顶部磁体6,铁芯5及顶部磁体6均与壳体1固定为一体,当磁路处于打开状态时,导磁轴内的夹层3为垂直方向,夹层的宽度H即为磁路间隙,此时铁芯5周围的两个旋转磁体4和一个顶部磁体6的磁场方向均与铁芯相向。
实施例二:如图3所示,与实施例一不同处是在壳体1内有三个带有旋转磁体4的导磁轴2,相应的在导磁轴之间有两个铁芯5及两个顶部磁体6,当磁路处于打开状态时,此时每个铁芯5周围的两个旋转磁体4和一个顶部磁体6的磁场方向均与铁芯相向或相背,从而可形成两个工作区A。
实施例三:如图4所示,它是在实施例一的基础上,在铁芯5两侧,两个导磁轴2的上方分别固定有一个侧磁体7,侧磁体的磁场方向与磁路打开时其下方的旋转磁体的磁场方向相同。
实施例四:如图5所示,它与实施例三的不同处是导磁轴的夹层3内没有安装旋转铁芯,为一个空槽,铁芯5周围的两个侧磁体7和一个顶部磁体6的磁场方向均同时与铁芯相向或相背。
上述实施例中壳体和导磁轴均由导磁材料制成,旋转磁体、侧磁体和顶部磁体可采用稀土钕铁硼、铁氧体等永磁材料。

Claims (4)

1、一种磁路开关,其特征是:它包括有一个导磁材料的壳体(1),该壳体的开口朝下,在壳体内有至少两个可沿其自身的轴心转动的导磁轴(2),各导磁轴相互平行并且位于同一水平高度,每个导磁轴中部设有夹层(3),在夹层中固定有可随导磁轴一同旋转的永磁材料的旋转磁体(4),每两个导磁轴之间有一个铁芯(5),在每个铁芯上方安置有永磁材料的顶部磁体(6),所述铁芯及顶部磁体均与壳体固定为一体,当磁路处于打开状态时,导磁轴(2)内的夹层(3)为垂直方向,夹层的宽度即为磁路间隙H,此时每一个铁芯(5)周围的两个旋转磁体(4)和一个顶部磁体(6)的磁场方向均同时与铁芯相向或同时与铁芯相背。
2、根据权利要求1所述的磁路开关,其特征是:在每一个导磁轴(2)上方还安置有侧磁体(7),侧磁体也与壳体(1)固定为一体,其磁场方向与磁路打开时其下方的旋转磁体(4)的磁场方向相同。
3、根据权利要求2所述的磁路开关,其特征是:所述导磁轴的夹层(3)内未设置磁体,为一个空槽,每一个铁芯(5)周围的两个侧磁体(7)和一个顶部磁体(6)的磁场方向均同时与铁芯相向或同时与铁芯相背。
4、根据权利要求1~3之一所述的磁路开关,其特征是:所述的导磁轴(2)有三个,与之相对应,导磁轴之间的铁芯(5)和顶部磁体(6)有两个。
CN 02138572 2002-11-11 2002-11-11 磁路开关 Expired - Fee Related CN1213445C (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683534A (zh) * 2013-11-27 2014-03-26 国家电网公司 长距离磁路传输电能系统用磁路开关
CN105692420A (zh) * 2016-04-01 2016-06-22 雷艳 一种新型加强型磁路结构
CN106064847A (zh) * 2016-01-25 2016-11-02 李保红 永磁磁腔
CN106733160A (zh) * 2016-12-27 2017-05-31 镇江市高等专科学校 永磁矿选设备监控装置
CN109175837A (zh) * 2018-10-30 2019-01-11 南安市淇凯工业设计有限公司 一种磁场叠加的永磁管道焊接小车

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683534A (zh) * 2013-11-27 2014-03-26 国家电网公司 长距离磁路传输电能系统用磁路开关
CN106064847A (zh) * 2016-01-25 2016-11-02 李保红 永磁磁腔
CN105692420A (zh) * 2016-04-01 2016-06-22 雷艳 一种新型加强型磁路结构
CN106733160A (zh) * 2016-12-27 2017-05-31 镇江市高等专科学校 永磁矿选设备监控装置
CN106733160B (zh) * 2016-12-27 2019-01-01 镇江市高等专科学校 永磁矿选设备监控装置
CN109175837A (zh) * 2018-10-30 2019-01-11 南安市淇凯工业设计有限公司 一种磁场叠加的永磁管道焊接小车
CN109175837B (zh) * 2018-10-30 2021-03-26 张家口大金风电装备有限公司 一种磁场叠加的永磁管道焊接小车

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