METHOD AND TEST RIG FOR DETERMINATION OF HYDRAULIC RESIDUES OF FUEL IN MISSILE TANK Russian patent published in 2015 - IPC G01M10/00 F02K9/96 

FIELD: machine building.

SUBSTANCE: test rig contains a drain tank, consumption pipeline with installed continuity transmitters, flowmeter, hydraulic pump, shutoff valve, and device for fuelling and drainage, to which the dosing unit for water topping is connected. The water dosing unit is set to the work volume equal to the volume of the expected hydraulic residues of tested fuel tank connected to the consumption pipeline. The top part of the drain tank is made in form of vertical tapering upward cone nozzle with taper 15°, on which the second continuity transmitter and overflow tank are installed. The rig contains loop main with shutoff valve connected in the consumption pipeline at the pump inlet, and fuelling pipeline with valve connected in the consumption pipeline at the pump output, which second end is connected to the consumption pipeline upstream the shutoff valve. Prior to the tested tank fuelling the consumption pipeline and drain tank are completely filled with water, then the hydraulic system is topped with dosed water volume equal to the expected hydraulic residues. Then testing is performed. Upon activation of both continuity transmitters in any sequence the shutoff valve is closed, moment of gas blow-by to the consumption pipeline and the drain tank complete filling are recorded. Then based on the known flow rate and time values, as well as topping volume ensured by the dosing unit the hydraulic residues are calculated.

EFFECT: increased accuracy of the hydraulic residues determination in the tested missile tank, and reduced labour intensity of tests.

2 cl, 1 dwg