STAND FOR HYDRAULIC TESTS OF ARTICLES Russian patent published in 2002 - IPC

FIELD: test stands for hydraulic tests of articles; study of fuel filling procedure at airfields. SUBSTANCE: proposed stand includes service reservoir 1 and pumps 2 and 3 interconnected in parallel; these pumps are also connected to service reservoir 1. Pressure lines of pumps 2 and 3 are connected by means of pipe lines which are provided with valves 9-21 and branch pipes 21-25 for connecting the object under test; they also include control instruments, check valves 4 and 5 and relief valve 6. For study of situations which present fire hazard due to static electricity and hydrodynamic fluctuations of pressure, test stand is provided with electrically insulated reservoir 29 connected to line supplying the medium to electrically insulated reservoir 29 through shut-off unit 30 at preset time of shutting-off the flow. Reservoir 29 is connected with inlet branch pipe of service reservoir 1 through third insulating insert 31; outlet branch pipe 16 of reservoir 1 is connected to branch pipes 23, 24 and 25 by means of additional pipe line 22 through first check valve 4 for connecting the articles under test. Pressure line of one of pumps 3 is connected to additional pipe line 22 through second check valve 5 and relief valve 6 before first check valve. EFFECT: extended functional capabilities. 2 cl, 1 dwg