The invention discloses a graphite contact pole assembly of an electric propulsion hollow cathode, belongs to the technical field of electric propulsion systems, and aims at solving the problem that the service life of an existing hollow cathode is shortened due to high-energy ion sputtering in the operation process of the electric propulsion system. The contact pole comprises a graphite contact pole top, a contact pole shell and insulating ceramic, the touch pole shell is a cylinder with two open ends, a step face is arranged at the top open end, an outward turning edge is arranged at the bottom open end, a threaded hole is formed in the outward turning edge and used for being matched with a touch pole electrode for installation, the graphite touch pole top is a cylinder with a bottom open end, the bottom open end is matched with the step face for installation, and a small hole is formed in the top of the graphite touch pole top. The emergent electrons of the touch holding electrode are emitted through the small hole, and the insulating ceramic is in a circular ring shape and is installed in the touch holding electrode shell. The invention is used in the hollow cathode of the Hall thruster.

    一种电推进空心阴极的石墨触持极组件,属于电推进系统技术领域,本发明为解决现有空心阴极在电推进系统运行过程中受高能离子溅射而缩短寿命的问题。它包括:石墨触持极顶、触持极外壳和绝缘陶瓷;触持极外壳为两端开口的圆筒,顶部开口端设有台阶面,底部开口端设有外翻沿,外翻沿上设有螺纹孔,螺纹孔用于与触持极电极配合安装,石墨触持极顶为底部开口的圆筒,底部的开口端与台阶面配合安装,石墨触持极顶的顶部开有小孔,触持极电极的出射电子通过小孔射出,绝缘陶瓷为圆环形,安装在触持极外壳的内部。本发明用于霍尔推力器空心阴极中。


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    Title :

    Graphite contact pole assembly of electric propulsion hollow cathode


    Additional title:

    一种电推进空心阴极的石墨触持极组件


    Contributors:
    DING YONGJIE (author) / WEI LIQIU (author) / LI HONG (author)

    Publication date :

    2022-04-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64G Raumfahrt , COSMONAUTICS