SHAFT SPILLWAY Russian patent published in 2005 - IPC

FIELD: hydraulic engineering, particularly automatic spillways arranged in upper pool of waterworks facility.

SUBSTANCE: spillway includes water drain funnel with full annular water drainage as viewed from above, transition part with elbow in lower part and branch pipe adjoining transition part. Drain funnel defines dodecagon in plane. Four faces of dodecagon forming two orthogonal pairs are oriented in parallel to longitudinal and transversal branch pipe axes. Elbow is of rectangular cross-section. Transition part end abutting elbow is of square cross-section with length of square side equal or less than that of elbow cross-section side. Side surface of transition part includes 12 cylindrical sections. Four sections having generator lines oriented in the single direction with branch pipe exes are trapezoidal in plane. Remainder 8 sections are triangular in plane.

EFFECT: simplified structure and increased economy for spillway erection.

2 dwg