Truss-type steam-liquid phase change heat-transferring device and assembling and welding method thereof

Abstract

The invention relates to the technical field of phase change heat-transferring and discloses a truss-type steam-liquid phase change heat-transferring device and an assembling and welding method thereof. The truss-type steam-liquid phase change heat-transferring device comprises tube shells internally provided with capillary cores, joints internally provided with capillary cores, sealing end covers, filling end covers and filling tubes. The shapes of the joints include the T shape, the L shape, the cross shape and the special shape. Any two of the tube shells internally provided with the capillary cores can form a truss structure through the corresponding joints internally provided with the capillary cores, the capillary cores and steam channels between any two of the tube shells mutually communicate with the capillary cores and steam channels in the corresponding joints, and thus stem-liquid phase change heat-transferring working media are circulated in the whole truss device. Heat consumption of a heat source inside a space camera can be efficiently transferred to the camera structure while the truss-type steam-liquid phase change heat-transferring device serves as a space camerasupporting structure, and on-orbit resources are efficiently saved.

Description

technical field [0001] The invention relates to a truss type vapor-liquid phase change heat transfer device and an assembly and welding method thereof, belonging to the technical field of phase change heat transfer. Background technique [0002] Space optical cameras have high requirements on the temperature level and stability of their structures, generally 20°C±2°C. With the development of space camera technology, the temperature control accuracy of cameras is also continuously improving. Some space optical cameras require temperature control accuracy of ± 0.3°C to ensure its imaging performance. The temperature of the space optical camera will be affected by the comprehensive influence of the heat flow outside the space, the low-temperature cold black space background and its internal heat source, and the space environment is very harsh. The external heat flow received by each orientation of the space camera is uneven, and the external heat flux received by the same orie...

AI Technical Summary

Problems solved by technology

On the other hand, the working heat consumption of the internal heat source is dissipated to the outer space as waste heat, and when the internal heat source is not working, it needs to compensate for its power consumption, which is a waste of limited power consumption resources on orbit

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