DEVICE FOR PROTECTING LANE OF DREDGES AND DREDGE SHIPS AGAINST FREEZING Russian patent published in 2011 - IPC E02B15/02 

FIELD: mining.

SUBSTANCE: device refers to mining industry, oceanology and other branches of national economy, which deals with execution of works during winter period, and can be used for protection of the lane against freezing. Device consists of heat insulating coating located on water surface of the lane. Heat insulating coating is made in the form of cylinders of similar length, which have the possibility of rotation around its axis. Cylinders with larger diameter are located in upper row, and those with smaller diameter are located in lower row. Axes of cylinders of lower and upper rows are hinged to each other by means of rods. Cylinders of upper row are made by means of alternation next but one with weighing of axes.

EFFECT: labour intensity is reduced and mining season during winter period is elongated by reducing the heat exchange intensity of water surface with atmosphere, which prevents ice formation on surface of water reservoir and allows free manoeuvring of dredge ships and dredges.

2 cl, 2 dwg