| 摘要 |
PROBLEM TO BE SOLVED: To isolate liquid from gas without provision of any bellows or diaphragm by coupling a liquid system with a gas tank, which is to absorb the coefficient of expansion of the liquid, through a thin tube having a radius to meet a specified formula. SOLUTION: A cooling water system 1 as a liquid system concerned is accommodated in a space, in which a cooling water 4 is put sealedly, and is put in communication to a gas tank 3 through a thin tube 2. In this tank 3 argon gas Ar is encapsulated for absorbing expansion of the cooling water 4 due to changing temperature, and at the time of launching a space apparatus, the argon gas Ar and cooling water 2 contact each other in the tube 2 so that a free interface 5 is generated. Therein the relationship r<((ρ/(G.ρ))<1/2> should be met, where (r) is radius of tube,σis surface tension of liquid, G is acceleration at launching, andρis density of the liquid. Thereby the liquid can be isolated from the gas with out provision of any bellows or diaphragm.
|
