The invention discloses a
permeation coefficient tester for an irregular sample under different
hydraulic pressure conditions and a test method. The tester comprises a
testbed, a sample fixing deviceand an
electronic control system, wherein a water inlet
pipe is connected with a filter device; an energy accumulator is arranged between a water outlet of an electric pump and a
pipe of a water inletof a
water storage container arranged in the middle of the
testbed; a
water collection container is arranged on the inner side of the
testbed; the sample fixing device is of a double-layer structureformed by a round steel
barrel on the outer side and a hollow rubber seal kit on the inner side; the
electronic control system comprises solenoid valves, a flowmeter, electronic switches of the electric pump, the energy accumulator and the inflator pump as well as a control center, the solenoid valves are arranged on a water outlet
pipe of the electric pump, an energy accumulator pipe, an inflatorpump pipe and a lower pipe of the
water collection container, and the flowmeter is arranged in the
water collection container. The tester can test the
permeation coefficients of the irregular sampleunder the different
hydraulic pressure conditions, the sample sealing performance is good, test precision is reliable, and
automation degree is high.