External drainage pump to prevent sediment from entering the water intake Submersible sand trap

Abstract

The invention discloses an external drainage pump submersible sand-blocking sill for preventing excess sediment from entering a water intake. tank, a drainage pump arranged outside the fixed sand sill, a sensor for monitoring the height of sediment deposition, a sensor for monitoring the water level, and a central control unit; A guide structure and a limit structure for limiting the floating distance of the submersible tank are arranged between the submersible buoyant tank and the enclosure of the fixed sand-blocking sill. 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 controlling and changing the water level in the surrounding cavity of the fixed sand-blocking sill, so as to realize the increase and decrease of the height of the sand-blocking sill, 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 large sediment deposits occur in front of water intakes during flood seasons 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 set the location and shape of the water intake reasonably. In addition, it is also necessary to set up sand-retaining and sand-discharging structures at appropriate places in front of the water intake. Kan is t...

AI Technical Summary

Problems solved by technology

[0006] The basic idea of ​​the present invention is to design the sand-blocking sill as a sand-blocking sill whose elevation can be changed. The elevation of the sand-blocking sill in the flood season is increased, and the elevation of the sand-blocking sill in the water intake period is restored to the design elevation, so as to solve the excessive amount of the sand-blocking sill in the flood season. The problem of silting or suspended sediment entering the water intake

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