A method of eliminating the suction vortex of the water inlet of the pumping station under the condition of the in-line layout of the gate station

Abstract

The invention discloses a method for eliminating an air suction vortex at a water inlet of a pumping station under the condition of an inline layout of gate stations, and belongs to the technical field of hydraulic engineering pumping stations. Its characteristics are: using the pier of the sewage cleaning machine bridge on the water inlet side of the pump station to contain the large swirling flow caused by the lateral flow velocity in the forebay of the pump station, so as to achieve the purpose of eliminating the suction vortex at the water inlet of the pump station; The purpose of the suction vortex, the cleaning machine bridge is arranged at 4D0 away from the inlet section of the pump station water inlet, the number of holes is twice the number of units in the pump station, and the center line of the pier is the same as the water inlet of the pump station. The center line of the partition pier is aligned in the plane direction; a partition wall is set between the control gate and the pump station; the position, length and width of the cleaning machine bridge and the length of the partition wall can be within a certain range. Adjust within. The invention can effectively eliminate the suction vortex of the water inlet of the pumping station under the condition that the gate and the station are arranged in a straight line, and has great significance for ensuring the safe and stable operation of the pumping station.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering pumping stations, and in particular relates to a method for eliminating the suction vortex at the water inlet of the pumping station under the condition that the control gate and the pumping station are arranged in-line. Background technique [0002] The pumping station hub consisting of a pumping station and a control gate is widely used in the plain areas of my country. The control gate is mainly used to discharge a large amount of upstream floods during the flood season, and the pump station is used to pump the downstream water to the upstream irrigation during the dry season. The inline arrangement of gates and stations is one of the layouts of the pumping station hub. The channel of the station is diagonally intersected with the said channel. The advantages of this arrangement are that it occupies less land, saves investment, and has high operating efficiency. For the ...

AI Technical Summary

Problems solved by technology

Under the condition that the gates and stations are arranged in a straight line, the flow state of the water inlet during the operation of the pumping station will be more or less affected by the lateral flow velocity of the incoming river, which may generate a suction vortex that can bring a large amount of air into the pump, resulting in The water pump unit produces strong vibration, which threatens the safe and stable operation of the pump station

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