Adjustable underwater orifice cavity flow noise comprehensive test device

• Main Authors: MIAO TIANCHENG, PENG WEICAI, XIONG JISHI
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2022
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

An adjustable underwater pore cavity flow noise comprehensive test device provided by the present invention comprises an underwater pore cavity structure, a pore cavity opening and closing adjustment mechanism and a test cavity structure, the underwater pore cavity structure comprises a pore cavity body, a sound source cavity and a signal acquisition system, the pore cavity body is a rectangular square tube body structure, a piston assembly is arranged in the pore cavity body, and the sound source cavity is connected with the test cavity structure. The sound source cavity is arranged on a side wall plate of the hole cavity body, a cavity opening is provided with a first sound transmission window for sealing, water is filled in the cavity, a sound source is arranged in the cavity, the test cavity is arranged at the top of a water tunnel test section, the test cavity is sealed through a second sound transmission window, and the signal acquisition system comprises a computer, a data acquisition front end, a firs