DEVICE FOR CONSTRUCTION OF CHANNEL WITH FLEXIBLE WATERTIGHT SCREEN Russian patent published in 2016 - IPC E02B5/02 

FIELD: construction.

SUBSTANCE: invention relates to waterworks and can be used when building channels irrigation systems by antifiltering screens without stopping watering of crops. Device for construction of channel with flexible watertight screen includes flexible pipeline 6, wound on drum 7 and installed in the upper reach of the water intake facility. Free end of flexible pipe 6 is passed through pipe 8 of water intake facility along the axis canal within filled with water pioneer ditch 9 and in turned position is fixed on the end of pipe 8. Inside flexible pipeline 6 there is a toroidal shell with helically twisted inner walls. In the cavity of toroidal shell there is an insert heavier than water, which is made of rigid material and has toroidal shape with a central hole along the axis with diameter exceeding total diameter of the flexible pipe 6 and inner walls of the toroidal shell. Whole surface of the insert is coated with antifriction lubricant.

EFFECT: proposed device allows not lose in tire puncture or damages of toroidal shell and enables to obtain the specified constant cross-section channel along the whole laid route.

1 cl, 2 dwg