WATER OUTLET CHANNEL WITH HIGH SLOPE Russian patent published in 2019 - IPC E02B13/00 E02B8/02 

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to the field of hydraulic engineering, namely to devices for water extraction from the channels with high slope. Drainage outlet includes feed channel 1, from which water enters the water intake and deposits move along screen nets 4 and are discharged in transit channel 3. Part of the water enters through the bottom intake to exhaust chamber 5, coupled with discharge pipeline 6. Discharge pipeline 6 in the plan is placed in closed well 7, and is connected through chamber 5 to the outlet confuser nozzle 8 via channels 9 and 10 with smoothly varying cross-sectional areas. Intermediate expansion chamber 11 is formed of reflective guide elbows 12 and 13, equipped with holes 14 and attached to well 7, which is located away from supply 1 and transit 2 channels, thus forming additional chambers 15 and 16 in well 7. Downstream of exhaust channel 19, the outlet of which has a bend in the direction of confuser nozzle 8, the flow of water through control valve 20 enters discharge pipeline 21. On the inner surface of discharge pipeline 21, along a helix, the angle of inclination of which is chosen in the range from 3 to 60°, guide plate 22 is installed, which has a rectangular section. Internal diameter of discharge pipeline 21 is determined by hydraulic calculation. Cavities of chambers 15 and 16 of well 7 for the inflow of water and air into the zone of discharge channel 19 are equipped with discharge openings 17 and 18, which allows filling all the cross-section of discharge pipeline 21.

EFFECT: invention simplifies the design, reduces the dynamic effect on the rounded pieces in the bended areas of the discharge pipe, improves the dynamic properties of the flow and improves the hydraulic regime of the structure.

3 cl, 2 dwg