Sublimation Water Collection Device for Spacecraft Vacuum Heat Test

Abstract

The invention discloses a vacuum thermal test sublimate water collecting device of a spacecraft. The device comprises three parts, namely a cold box cover, a cold plate component, a collecting tank and a support frame, wherein the cold box cover envelopes the upper part and four side surfaces of the cold plate component, the upper part of the cold box cover is connected with the outlet of a water sublimator, and the bottom of the cold box cover is fixed to the support frame by virtue of a bolt; sublimate water discharged by the water sublimator is guided into the cold plate component; the cold box cover, the cold plate component and the collecting tank are fixed to the support frame by virtue of bolts; and a thin-film heater and a thermocouple are adhered to the inlet of the cold box cover and used for performing temperature control, and the temperature control range is 5-10 DEG C. The vacuum thermal test sublimate water collecting device is capable of ensuring that sublimate water discharged through the outlet of the water sublimator diffuses in time and is collected by the cold plate component so as to ensure that the outlet pressure of the water sublimator is not higher than 10Pa, and the vacuum degree of a space environment simulator outside the cold box cover and the collecting tank is not influenced.

Description

technical field [0001] The invention belongs to the technical field of spacecraft thermal tests, in particular, the invention relates to a capture and collection device for sublimated water in a spacecraft vacuum thermal test environment. Background technique [0002] In deep space exploration missions and the use of high-power spacecraft, when the spacecraft system cannot provide enough radiation heat dissipation area, water sublimator is required as auxiliary heat dissipation. The water sublimator is a special phase change cooling device, especially suitable for space applications. Since the pressure of the high vacuum environment in space is much lower than the lower triple point pressure of water, solid ice will sublimate directly into vapor without melting after absorbing heat, and the latent heat absorbed during the sublimation process is much higher than the heat released by condensation of liquid water. Using this principle, the working medium water undergoes a phas...

AI Technical Summary

Problems solved by technology

Like other spacecraft and components, the vacuum thermal test of the water sublimator on the ground should be carried out in a space environment simulator that simulates vacuum and cold background. If the large amount of gaseous water released by the water sublimator is not captured and collected, it will inevitably seriously affect The vacuum state in the container cannot effectively simulate the real on-orbit state

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