一种微流量贮存供给系统及方法

By designing a micro-flow storage and supply system with pure mechanical gas pressure regulation and control, the problem of unstable flow supply in micro-nano satellite propulsion systems was solved, achieving stable output and precise control of liquid propellant, and improving the control accuracy and reliability of the spacecraft.

CN117429626BActive Publication Date: 2026-07-17BEIJING INST OF CONTROL ENG

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF CONTROL ENG
Filing Date
2023-10-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing micro-flow control systems occupy a large volume and have flow rates far exceeding the requirements of propulsion systems for micro and nano satellites and other micro-space vehicles. They cannot achieve stable flow supply and precise control, which affects the control accuracy, lifespan and reliability of the spacecraft.

Method used

A micro-flow storage and supply system is designed using a purely mechanical gas pressure regulation and control scheme. The system includes a gas storage and control module, a propellant storage and supply module, and a micro-flow control module. Constant output and precise flow control of liquid propellant are achieved through a mechanical pressure reducer and a microfluidic chip.

Benefits of technology

This invention achieves stable output and precise flow control of liquid propellant in the propulsion system of small spacecraft. The system has a simple structure and high reliability, and is suitable for the storage and supply of propellant under microgravity conditions in space and the ultra-low flow output of liquid working fluid on the ground.

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Abstract

本发明涉及一种微流量贮存供给系统及方法,包括:气体贮存与控制模块、推进剂贮存供给模块、微流量控制模块;气体贮存与控制模块将输入的高压气体经过机械式减压部件调节至推进剂贮存供给模块所需的气体压力,为推进剂贮存供给模块存储的液体推进剂提供恒定的输出压力;推进剂贮存供给模块在恒定的输出压力下做活塞运动,将存储的液体推进剂排出至微流量控制模块;微流量控制模块为系统提供预设流阻,调节液体推进剂的输出达到十纳升每秒量级的超微流量。本发明能够为小型空间飞行器推进系统贮存一定容量的液体推进剂,并提供纳升每秒量级的流量输出。
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