METHOD OF FILLING OF FLUID CIRCUIT HYDRAULIC LINE WITH WORKING FLUID EQUIPPED WITH HYDROPNEUMATIC COMPENSATOR OF WORKING FLUID VOLUME EXPANSION Russian patent published in 2014 - IPC B64G1/50 

FIELD: transport.

SUBSTANCE: set of invention relates to spacecraft thermal control systems and can be used in spacecraft preparation for flights as well as in other fields. In compliance with this method, prior to filling evacuated hydraulic line with working fluid hydropneumatic compensator (HPC) gas chamber maximum volume $$(V_{HPS}^{meas})$$ measured. Said chamber is filled with gas at pressure higher than that of displacement gas above working fluid surface in refueller tank. Said line filled with working fluid, its weight-average temperature is measured. Initial gas pressure in HPC has chamber is set defined by measured pressure $$(V_{HPS}^{meas})$$ and design pressure $$(V_{HPS}^w),$$ design working pressure (p_W) in said gas chamber and working fluid column height from the point of HPC fluid chamber connection to said line to top points of said line. Then, HPC fluid chamber is filled with working fluid at control over current gas precure in HPC gas chamber. HPC gas chamber pressure reaching p_W filling it is terminated. Proposed device comprises refueller with filling and draining tanks, vacuum unit, gas pressure source, appropriate filling draining and controlling equipment with appropriate valve and accessories. Inventions allow exclude jobs of gaged discharge and associated processes of neutralisation and recover of discharged working fluid.

EFFECT: higher safety and reliability of HPC filling.

2 cl, 1 dwg