METHOD OF FLUSHING NETTING OF FISH PROTECTION STRUCTURES AND DEVICE USED FOR PURPOSE

摘要

FIELD: construction. ^ SUBSTANCE: invention refers to the sphere of hydraulic engineering immediately dealing with arrangement of fish protection structures as part of water catchment plants. The suggested process of netting flushing includes the following activities: operating water flow pumping into the perforated flushing pipe, generation of hydraulic water-air streams discharged through the perforation holes, subsequent excitation of the stream body be means of spreaders engagement and flushing the netting with the hydraulic water-air hydrodynamic streams thus generated. In the spreader flow over process the kinetic energy of the water-air streams is conversed to energy of elastic acoustic vibrations, there being flushing hydrodynamic streams generated in the form of a high intensity hydrodynamic field with an ultrasound frequency band acoustic excitor. There is also a device suggested that may be used to flush the netting by means of the method in question. ^ EFFECT: netting flushing efficiency enhancement. ^ 20 cl, 23 dwg