METHOD FOR TESTING OF BELLOW EXPANSION JOINTS ON PROBABILITY OF FAULTLESS OPERATION Russian patent published in 2016 - IPC F15B19/00 F16J3/04 

FIELD: test equipment.

SUBSTANCE: method is intended for testing of bellow expansion joints and relates to hydraulic tests of articles. Method consists in the fact that a hermetically sealed expansion bellow joint with auxiliary fittings on its upper and lower flanges is installed coaxially in a load frame with identical to paired bellows element. Reinforced end flanges of bellows rigidly fastened by tension rods may be used as bearing frame. Reversible hydraulic pump is connected to the lower power fittings. System is filled with fluid, and working pressure is created. Movement of contacting flanges is due to occurrence of differential pressure obtained by pumping the fluid out of one bellows element and its delivery to the other.

EFFECT: technical result is possibility of testing of expansion bellows of large diameters.

1 cl, 2 dwg