Built-in drainage pump to prevent sediment from entering the water intake Submersible sand trap

Abstract

The invention discloses a built-in drainage pump submersible sand-blocking sill for preventing excessive silt from entering a water intake, comprising a fixed cavity-type fixed sand-blocking sill, a submersible tank located in the cavity of the fixed sand-blocking sill, The drainage pump installed in the submersible tank, the elevation sensor for monitoring the sediment deposition height and the central control unit; A guiding structure and a limiting structure for limiting the floating distance of the submersible tank are arranged between the sill cavity, and the submerged tank is provided with a vent pipe (1). The submersible-floating sand-blocking ridge described in the present invention, when the sediment deposition in front of the sand-blocking ridge is higher than the limit elevation, the submersible tank floats up to increase the elevation of the sand-blocking ridge, and when the temporary sand prevention task is completed, the submersible tank dives to a fixed height. In the surrounding cavity of the sand-blocking ridge, the normal state of sand-blocking is restored. The invention makes the submersible tank float and sink by changing the water level in the submersible tank, so as to realize the increase and decrease of the height of the sand-blocking ridge, and the operation is simple and the feasibility is strong.

Description

technical field [0001] The invention relates to water conservancy projects, disaster prevention and mitigation projects, agricultural water conservancy projects, etc., and in particular to a sand-blocking sill for water intakes of mountainous rivers where the sedimentation in front of the water intake is relatively large and the height of the sand-blocking sill needs to be temporarily increased. Background technique [0002] In addition to taking water from the middle and deep layers of high-dam reservoirs, more methods of water intake from mountainous rivers are low-gate water intake or no-dam water intake, and the water intake is mainly arranged laterally. In order to prevent the sediment in the river from entering the water intake, it is very important to reasonably set the position and shape of the water intake. In addition, it is necessary to set up sand-blocking and sand-discharging structures at appropriate places before the entrance of the water intake. Mainly. [0...

AI Technical Summary

Problems solved by technology

The occurrence of the above situation will affect the safe operation of the water intake. The current countermeasures are mainly manual dredging, and there are no effective engineering measures

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