COMBINED DEVICE FOR DAMPING PRESSURE FLUCTUATIONS IN PIPELINES OF POWER PLANTS AND NOISE REDUCTION OF POWER PLANTS Russian patent published in 2022 - IPC F16L55/04 

FIELD: vibroacoustic protection.

SUBSTANCE: invention relates to the field of vibroacoustic protection. The device for damping hydrodynamic and gas-dynamic pressure fluctuations includes a perforated insert installed in the housing, supported by its flange on springs, pushers passed through the seal, channels of the housing cover, holes of the rear support ring. The device is additionally equipped with pressure and sound pulsation sensors, bellows compensators, a block for generating characteristics of pressure and sound pulsation compensation, a vibrator actuator and an additional sound compensation source. Bellows compensators are installed in the cut-out section of the pipeline on both sides of the collapsible housing, pressure and/or sound pulsation sensors are placed in front of the bellows compensators, connected to a unit that transmits the compensating signal generated by it to the vibrator actuator and/or to an additional sound compensation source. The support part of the perforated insert is made in the form of a disk, and the diameters of its holes are calculated to ensure maximum efficiency of the device by equalizing pressure pulsations and velocities during the propagation of the gas or liquid flow of the medium through the pipeline. The pusher is equipped with a guide washer.

EFFECT: reduction of gas/hydrodynamic noise and pressure pulsations in pipeline systems is provided.

5 cl, 1 dwg