Space debris prevention type heat radiator

Abstract

The invention relates to a space debris prevention type heat radiator, which is a cylindrical structure formed by a plurality of connecting plates in a surrounding way. Heat pipes which are arranged in parallel are arranged on one side of the connecting plates. A fluid pipeline is arranged on the heat pipes in the shape of a continuous square wave. One part of the fluid pipeline which is arranged at the rising edge or the falling edge of the square wave is fixedly connected with the heat pipes. The other part of the fluid pipeline is arranged among the heat pipes and is not in contact with the connecting plates. The heat pipes and the fluid pipelines are arranged on the inner wall of the cylindrical structure. Compared with the fluid pipeline of the existing fluid loop radiator, the fluid loop pipeline of the heat radiator provided by the invention is greatly reduced and the probability that the fluid pipeline is hit by space debris is greatly reduced. Even though the space debris hit the heat pipes and cause the heat pipes to fail because of leakage, only the radiating capacity of a small area where the heat pipes are hit is lost and almost the working of the entire radiator is not influenced. If the space debris hit the fluid pipeline and cause the fluid pipeline to fail because of leakage, an automatic valve can detect the pressure of a hit branch and can isolate the hit branch, and the situation that the entire radiator fails is avoided.

Description

technical field [0001] The invention belongs to the technical field of spacecraft thermal control, and relates to a thermal radiator for spacecraft. Background technique [0002] The spacecraft dissipates heat in outer space mainly through heat radiators. [0003] Since the radiator directly faces the external space, it is easily impacted by space debris, especially the pipeline on the radiator, which is likely to cause leakage of the pipeline working fluid when it is hit, thereby causing the radiator to fail. With the sharp increase of space debris, the risk of space debris impact on low-orbit spacecraft cabin radiators is gradually increasing, and the ability of thermal radiators to resist micrometeoroid / debris impacts is becoming increasingly urgent. [0004] At present, heat radiators are mainly fluid pipeline radiators, generally using "Ω" tubes as the fluid circuit channel, and the tube-plate connection in the middle of the radiator uses a 1mm thick aluminum plate as ...

AI Technical Summary

Problems solved by technology

It can be seen that the protection ability of the radiator pipeline in zone 1 is much weaker than that in zone 2, which can easily lead to the failure of the fluid pipeline of the heat radiator, thus causing the heat radiator to lose its heat exchange capacity

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