DEVICE FOR CONDUCTING TIGHTNESS TESTS AND COMPLEX PREPARATION OF HOLLOW ARTICLES Russian patent published in 2000 - IPC

FIELD: mechanical engineering; testing technique. SUBSTANCE: device includes compressed gas source, reservoir filled with liquid which is connected with article and with liquid pressure source, program setting unit connected with control mechanisms and three-position pneumatic distributor for dividing of compressed gas flows, delivery chamber with built-in heating element mounted inside liquid reservoir and connected with it via bypass check fitted in lower portion of delivery chamber which is connected with compressed gas source via two-position pneumatic distributor provided with electromagnetic control; it is also connected with cavity of article via filtering unit, check valves, high-pressure chamber of pneumohydraulic booster and electric contact pressure gauge; outlet is connected with liquid reservoir via two two-position electromagnetically controlled distributors mounted in series; compressed gas source is connected with inlets of second and third two-position electromagnetically controlled pneumatic distributors; outlet of second distributor is connected with low-pressure chamber of booster; outlet of third distributor is connected with cavity of article via oil sprayer and check valve; both outlet of three-position electromagnetically controlled distributor are connected with cavity of article: one via check valve and other via check valve and thermal heater. EFFECT: extended technological capabilities; reduced consumption of labor. 1 dwg