Liquid-state metal electromagnetic pump for space nuclear environment

Abstract

The invention relates to a liquid-state metal electromagnetic pump. Aiming at solving the problem that an existing electromagnetic pump cannot meet application requirements of a space nuclear power supply system, the invention provides a liquid-state metal electromagnetic pump for a space nuclear environment. The electromagnetic pump is composed of a pump groove assembly, an electromagnetic excitation structure assembly, a gas sealing shell assembly and a power transmission assembly. According to the liquid-state metal electromagnetic pump, an iron core structure has relatively good magnetism conducting efficiency and the weight and volume of the electromagnetic pump are easy to reduce; an annular flow channel of liquid-state metal can effectively improve the working efficiency of the electromagnetic pump; the electromagnetic pump is compact and firm in structure and can bear vibration and impacts from a launching phase to an orbit injection phase of a spacecraft; the gas sealing shell assembly and inert gas can provide effective protection for an electromagnetic excitation structure so that the service life is extremely prolonged and the reliability is extremely improved; and the electromagnetic pump adopts a relatively reasonable design structure so that the control of temperature distribution is facilitated and the electromagnetic pump can stably work for a long period in a vacuum environment.

Description

technical field [0001] The invention relates to a liquid metal electromagnetic pump, in particular to a liquid metal electromagnetic pump for space nuclear environment. Background technique [0002] The development of deep space exploration spacecraft urgently needs a high-power, long-life, all-weather space power system. At present, only the space nuclear power system using thermionic conversion and Stirling cycle can meet the above load requirements. [0003] The space nuclear power system generates heat from nuclear energy, and uses electromagnetic pumps to pump liquid metal coolant into the core of the nuclear reactor to export the heat. Under normal circumstances, in order to save the launch load, the space nuclear power system can only be equipped with one electromagnetic pump. However, since the electromagnetic pump is the core equipment of the space nuclear power system, which is equivalent to its heart, once an unexpected failure occurs, the entire system will be s...

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Problems solved by technology

[0006] In order to solve the problem that the existing electromagnetic pump is difficult to meet the application requirements of the space nuclear power supply system, and realize the electromagnetic pump transportation of liquid metal coolant in space and strong radiation environment, the invention provides a liquid metal electromagnetic pump for space nuclear environment

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