AUTOMATED CHECK WATER OUTLET Russian patent published in 2004 - IPC

FIELD: hydraulic engineering. SUBSTANCE: automated check water outlet that can be used to maintain desired water level in checks of rice irrigation systems has inlet pipe 1 with water outlet opening 2 and structure abutments 3. Gate valve 4 is mounted on water outlet opening 2 and has three plots 5 rigidly fixed together at certain angle. Gate valve 4 is mounted on horizontal axis of revolution 6. Regulator has partition 7 fixed in structure abutments 3. Control chamber 8 made of flexible enclosure is disposed above gate valve. Control chamber 8 is closed on tailwater side by means of partition and communicates with tailwater pool through canal 9 and with headwater pool, through canal 10. Canal 10 is provided in structure abutments 3 and canal 9, in partition 7. Installed in canal 9 is valve 11 communicating with telescopic system 12 that incorporates level sensor 13 attached to telescopic system 12 by means of lock 14. Inlet pipe 1 is beveled through 30 - 60 deg. in vicinity of contact with gate valve. Level sensor has inner part 17 with retainer and outer part 15. EFFECT: enhanced closing speed of gate valve and water outlet flow ratio; ability of step-by-step level control. 1 cl, 2 dwg