The invention provides a hollow cathode structure for purifying a propellant. The hollow cathode structure for purifying the propellant comprises a cathode tube and an emitter, the emitter is arranged inside the downstream of the cathode tube, a propellant enters from the upstream of the cathode tube, and one or more groups of filter assemblies are arranged inside the cathode tube in the direction of the emitter towards the upstream; the filtering assembly comprises a first filtering piece, a second filtering piece and a gasket, the first filtering piece and the second filtering piece are arranged at an interval, and the gasket is arranged between the first filtering piece and the second filtering piece. The oxygen impurity content of the working medium gas can be properly reduced, the filling difficulty is reduced, the replacement time is shortened, the sufficient metal titanium is beneficial to impurity purification of the propellant gas working medium, the service life of the hollow cathode is prolonged, and the long service life and high reliability of the electric propulsion system are achieved.
本发明提供了一种用于推进剂净化的空心阴极结构,用于推进剂净化的空心阴极结构包括阴极管以及发射体;所述发射体布置在所述阴极管下游的内部,推进剂从所述阴极管上游进入且在所述发射体朝向上游的方向上阴极管的内部被配置为布置有一组或多组过滤组件,所述过滤组件包括间隔布置的第一过滤件、第二过滤件以及布置在所述第一过滤件与第二过滤件之间的垫片,本发明能够根据任务时间和工质气体中氧杂质含量、工质气体总用量计算得到过滤件数量和尺寸,可以适当降低工质气体氧杂质含量,有利于降低加注难度减少置换时间,足量的金属钛有利于对推进剂气体工质的杂质净化,有利于延长空心阴极寿命,实现电推进系统的长寿命高可靠性。
Hollow cathode structure for propellant purification
用于推进剂净化的空心阴极结构
2022-04-01
Patent
Electronic Resource
Chinese