Low-water pressure sealing performance test method and system for high-water pressure solenoid valve

Abstract

The invention relates to a low-water pressure sealing performance test method and system for a high-water pressure solenoid valve. The low-water pressure sealing performance test method comprises thefollowing steps: connecting the to-be-tested high-water pressure solenoid valve with a straight-through valve of a water tank through a first water pipe, connecting a needle head or a fine tube with an internal diameter of no greater than 1.5 mm through a second water pipe from a water outlet of the high-water pressure solenoid valve; injecting water into the water tank, wherein the height of thewater surface away from the straight-through valve is not lower than 70 mm and is not higher than 330 mm; opening the high-water pressure solenoid valve, opening the straight-through valve and closingthe high-water pressure solenoid valve after the water is drained to air in a pipeline between the straight-through valve and the needle head or the fine tube; after the high-water pressure solenoidvalve is opened for a first preset time, closing high-water pressure solenoid valve for a second preset time, repeatedly opening and closing the high-water pressure solenoid valve for a preset numberof times; opening and closing high-water pressure solenoid valve once and acquiring the water dripped out from the needle head or the fine tube in a closed state; measuring the volume of the water acquired from the needle head or the fine tube to judge the low-water pressure sealing performance of the high-water pressure solenoid valve and realize the low-water pressure sealing performance test.

Description

technical field [0001] The invention relates to the technical field of sealing performance testing of high water pressure solenoid valves, in particular to a method and system for testing low water pressure sealing performance of high water pressure solenoid valves. Background technique [0002] At present, there are relatively mature standards to detect whether the high water pressure solenoid valve in the water purification product can work normally under high water pressure. The light industry standard (QB) QB / T1291-1991 for the water inlet solenoid valve for automatic washing machines The standards for high water pressure solenoid valves are stipulated in the standard. The water inlet solenoid valves for automatic washing machines can be tested for their tightness under high pressure conditions through water pressure resistance and durability tests. The testing process and standards are quite complete. However, there is no specific test method and system for whether the ...

AI Technical Summary

Problems solved by technology

However, there is no specific test method and system for whether the high water pressure solenoid valve can work normally in the low water pressure state and whether there is water leakage. Under the pressure state, water leakage occurs due to its own process structure and other problems, which will cause trouble for users to use water, and even cause certain property losses.

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