霍尔电推进系统中的微流量控制器

The micro flow restrictors for Hall current thruster

介绍了微流量控制器在霍尔电推进系统中的应用状况。微小流量的精确控制是霍尔电推进系统协调工作的基础。根据内部节流元件的不同,目前国际上电推进系统中使用的微流量控制器主要有金属毛细管式、金属多孔材料式和节流孔板式等几种形式。俄罗斯研制的微流量控制器多为金属毛细管式和节流孔板式;美国和欧洲电推进系统上使用较多的是金属多孔材料式微流量控制器。此外,近年来国外新发展了一种磁致伸缩材料的流量比例控制阀,也可用于电推进系统的微流量控制。国内研制的整体式结构金属多孔材料微流量控制芯体,可以取代目前正在使用的普通过滤多孔材料,使其无论是性能、寿命,还是可靠性等方面都有极大的提高。

The micro flow restrictors for Hall current thruster application was introduced in this paper. A precise control of micro flowrate was the base of Hall current thruster for compatible work. Now, metal capillary, metal porous and throttle orifice etc are internationally main methods of micro flow restrictors used for electric thruster according to different internal throttling elements. Most of micro flow restrictors prepared by Russia were metal capillary and throttle orifice and that by American and Europe were metal porous. In addition, a flowrate proportional control valve of magnetostrictive material manufactured by foreign was also used to control micro flowrate for electric thruster system recently. The common filter porous material used now can be substituted by metal porous micro flow restrictors with unit structure, and the properties or life or reliability of micro flow restrictors were improved greatly.