Rotary high-precision air tightness detection apparatus

• Main Authors: LIU JINYUN, JIN YINGRONG, ZHOU HUA, ZENG QI, NIU TIANMEI, ZHAO YUANDONG, LUAN DAOCHENG, HE YI
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2009
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention provides a rotary type high-precision air-tightness detection device, and relates to a differential pressure measurement system consisting of a reading tube (1), a loop tube (2), a communicating tube (3), a comparison cavity (4), a sensor interface (5), a sensor sealing member (6) and a pressure sensor (7). The detection device is characterized in that the reading tube (1), the communicating tube (3) and the comparison cavity (4) form a U-shaped tube; the loop tube (2) is used for being communicated with the lowest position of the U-shaped tube and the highest position of the comparison cavity (4), and is positioned between the reading tube (1) and the comparison cavity (4), and the sensor interface (5) is positioned at the highest position of the loop tube (2), thus incorporating the comparison cavity (4) in the differential pressure measurement system into a measurement device to reduce the volume of the measurement system; and the U-shaped tube has double functions of differential pressure me