DEVICE FOR LEAK-TIGHTNESS TEST Russian patent published in 2006 - IPC G01M3/26 

FIELD: test engineering.

SUBSTANCE: device comprises reference tank, pressure source connected with the tank through the valve, pipeline composed of two sections with valving member made of pressure-tight vessel partially filled with fluid, and two tubes connected with the pressure-tight vessel. The open ends of the tubes are submerged into the liquid and located at the same level, and the second ends of the pipes are connected to the ends of the pipeline sections that face each other. One of the ends of the pipeline is connected with the reference tank, and the other one, with the article. The differential pressure gage with movable baffle is made of a pipe provided with a liquid droplet. The first space of the pressure gage is in communication with the reference vessel, and the second one, with the article. The pivoting unit is used for rotating the pipeline having valving member and differential pressure gage having the movable baffle around the axis that lies in the plane parallel to the fluid surface by an angle that provides the open pipe faces to be in communication with the air space of the vessel.

EFFECT: enhanced reliability of testing.

1 dwg