一种蒸发 / 升华系统压力匹配设计方法

By implementing a three-level pressure matching design for the water sublimation cooling system, the problem of system instability under different gravity environments was solved, achieving system stability and reliability, and meeting the requirements of water sublimation cooling system for ground testing and lunar operation.

CN120872049BActive Publication Date: 2026-07-17BEIJING INST OF SPACECRAFT SYST ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF SPACECRAFT SYST ENG
Filing Date
2025-05-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing technology lacks effective means for fluid distribution, pressure control and system pressure matching design of water sublimation heat dissipation systems, which leads to unstable operation of the system under different gravity environments and may cause problems such as leakage, uneven flow distribution and inconsistent pressure display.

Method used

A pressure matching design method for evaporation/sublimation systems is proposed. The pressure of the water sublimation heat dissipation system is matched through three levels of design: matching the full-cycle working pressure of the sublimator tank with the input and output pressure of the branch pressure regulating device, matching the output pressure of the branch pressure regulating device with the stable working pressure of the water sublimation heat dissipation device, and matching the layout of the pressure regulating device and the pressure detection device under gravity/microgravity/lunar surface environments.

Benefits of technology

The water sublimation cooling system was able to operate stably under different gravity environments, ensuring reasonable control of system pressure and fluid distribution, meeting the technical requirements for research and development and on-orbit application, and providing the system's reliability and stability.

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Abstract

本发明公开了一种蒸发 / 升华系统压力匹配设计方法，包括：确定目标散热量范围[Qmin,i,Qmax,i]以及稳定工作的压力范围[Psmin,i,Psmax,i]；确定压力调节装置的压力调节范围[Prmin,i,Prmax,i]；确定贮箱的输入压力范围[Pvmin,i,Pvmax,i]；根据水升华散热系统气侧压力变化范围[Pvgmin,i,Pvgmax,i]调整工质贮箱气侧容积Vg0和液测充满工质时的气侧充装压力Pg0；获取液体工质入口位置的理论工质压力Pf,i；当Pf,i∈[Prmin,i,Prmax,i]±1kPa则判断布局合理；获取水升华散热装置入口的压力传感器示数Pfs,i；当根据Pfs,i反推Pr,i和P’f,i，当Pr,i∈[Prmin,i,Prmax,i]且P’f,i∈[Prmin,i,Prmax,i]则判断布局合理，否则调整布局。本发明给出了系统压力匹配设计理念、关键参数匹配方法，保障水升华系统在空间任务中可靠应用，确保水升华系统在地面测试、在轨微重力环境、月球重力环境稳定运行。
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