METHOD FOR HYDRODYNAMIC ICE REMOVAL FROM DOCK COMPLEX AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC E02B15/02 B63C1/02 B63B59/00 

FIELD: water transport.

SUBSTANCE: invention relates to the field of water transport and can be used to improve navigation conditions during the winter navigation period. The method for hydrodynamic ice removal from the dock complex includes protecting the floating dock 1 from broken ice using ice-breaking jets created by the ballast pumps of the floating dock 1. At different heights, the nozzles of the flow-forming units 2 are mounted, they are connected by a supply pipeline system. When the floating dock 1 is submerged, the water from the ballast pumps alternately flows first into the lower 10 and then into the upper 11 nozzles of the flow formers 2. The ice-deflecting jets formed by the nozzles of the flow formers 2 delay and drive the broken ice from the inlet end of the floating dock 1. The nozzles of the flow formers 2 are placed on different horizons 3, 4, 5, corresponding to different sediments of the floating dock 1. Water is supplied to the nozzles of the flow-formers 2, while in the process of ice recovery, the nozzles of the flow-formers 2 are used, located on the horizon 4 below the waterline. This creates an intense directed current in the inner space of the floating dock, detains and removes broken ice from the inner space of the floating dock. The device for hydrodynamic ice removal from the dock complex includes the nozzles of the flow-former 2, mounted at different heights, connected to the ballast pumps of the floating dock 1 by a supply pipeline system. The nozzles of the flow formers 2 are located on the inner sides of the towers of the floating dock 1, at an equal distance from each other and at different horizons 3, 4, 5, corresponding to different sediments of the floating dock 1. The cross-sectional area of the nozzles of the flow formers 2 is selected based on the greatest pulling force and the range of the jet with an outflow speed of 2.5-3 m/s. All the nozzles of the flow-formers 2 are turned to the inlet end of the floating dock 1 to create an intense directed flow inside the floating dock 1, and the axes of the nozzles of the flow formers 2 are located at an angle of 30 degrees to the inner sides of the towers of the floating dock 1 and at an angle of 30 degrees relative to the main plane 15 of the floating dock 1 upwards.

EFFECT: increased efficiency of ice recovery due to creation of intense directed flow inside the floating dock and vertical component of fluid velocity in the jet stream when the jets of the flow forming devices are turned by 30 degrees relative to the main plane of the floating dock upwards.

2 cl, 9 dwg