一种航天器用先导级电磁阀的新型结构设计

提出了一种新型两位三通结构的先导级电磁阀设计方案,由2组永磁体和3组控制线圈构造3条永磁锁位磁路和2条电磁偏置磁路,不仅实现了阀门的小型化结构和无功耗位置保持,而且提高了阀门的密封可靠性.这种阀门可以作为大推力发动机推进剂主阀的先导级控制阀,能够满足在轨长期应用的需求.通过电磁场有限元分析和产品样机试验的方法,对设计方案的可行性进行验证,验证结果表明新型先导级电磁阀的各项性能指标均达到设计目标.

A Creative Structure Design of Pilot Solenoid Valve for Spacecraft

A new design for two-position three-way pilot solenoid valve is presented, which proposes that two groups of permanent magnets and three groups of control coils construct three permanent magnetic lock circuits and two electromagnetic bias circuits. This proposal not only results in the miniature structure of valve and no power consumption for holding position, but also improves the sealing reliability of valve. Such solenoid valve can be used as the pilot control valve of the main valve of large-thrust engine propellant which can meet the needs of the long-term application in orbit. The feasibility of this design scheme is verified by finite element analysis and product-prototype experiment. The verification results show that all performance indices of the new type of pilot solenoid valves achieve the design target.