WATER INTAKE STRUCTURE FOR INTAKE OF WATER FROM SURFACE SOURCES Russian patent published in 2016 - IPC E02B9/04 E03B3/04 

FIELD: water supply.

SUBSTANCE: invention relates to water supply and can be used in water supply systems from surface sources, where there are fluctuations of water levels over time, for example in period of floods, steady low water level. Water intake structure for intake of water from surface sources, equipped in form of coastal water intake comprises water intake chamber 1, side wall of which is equipped with two short pipes 2 and 3, connected to source 18, and is a hydraulic relay, in which levels in water intake chamber are fixed by valve gates 4, 9 with float drive. Bottom valve 4 via hinges 5, 6 is secured with rod 7 of float 8. Upper valve gate 9 via horizontal axis 10 is fixed by lever 11 via hinge 12 with rod 7 also of float 8. Water intake structure is in form of a float with air chamber 17 in lower part of water intake structure and is attached to vertical guide supports by means of annular couplings. Interrelation of operation of pair of valves 4, 9 maintains virtually high accuracy and synchronisation of maintenance of levels in water intake chamber 1, and in suction chamber 15 with pumps 16 with by placing at different height inlet short pipes 2, 3, fixed in side wall of water intake chamber 1, diameters of which can differ, respectively their carrying capacity is different, speed of operation of valves, as well as reliable maintenance of water levels in water intake structure as a whole. Thus, reliable operation in transient modes depending on position of water level in source is provided due to availability of two pipes, interconnected by valves with float drive, in particular, with capacity of pipes, each calculated from condition, so that level at closing or opening moves slower.

EFFECT: use of invention enables to automate process of controlling levels between drop in water level of a surface source and a water intake structure and maintain in suction chamber with pumps calm surface water level, hence, reliability and accuracy of operation of water intake structure is improved.

1 cl, 1 dwg