LABORATORY STAND FOR DETERMINING RESONANCE FREQUENCIES OF SMALL-SIZE MODELS OF HYDRAULIC STRUCTURES Russian patent published in 2025 - IPC G01M10/00 

FIELD: measuring equipment.

SUBSTANCE: laboratory bench for determining the resonance frequencies of small-sized models of hydraulic structures comprises a model of a hydraulic structure placed in a container with distilled water and connected via a receiving device to the input of a two-stage AC microphone amplifier, programmable audio frequency oscillation generator, which transmits the generated electrical signal to the mechanical oscillations source – electroacoustic transducer, receiving device, two-stage AC microphone amplifier, computer operating in oscilloscope mode, recording amplitude-frequency characteristics of vibrations, which are used to determine resonance frequencies of small-size model of hydraulic structure, connecting wires. Audio frequency oscillation generator is configured to generate audio frequency oscillations in 0-400 Hz frequency range. Two-stage AC microphone amplifier is placed in a closed metal housing and has input voltage sensitivity of not less than 200-300 mcV.

EFFECT: design of a laboratory stand for determining resonance frequency of small-size models of hydraulic structures.

1 cl, 3 dwg, 1 tbl