Movable suspension type eddy-eliminating beam system for eliminating vertical-axis eddy at water inlet

Abstract

The invention discloses a movable suspension type eddy-eliminating beam system for eliminating a vertical-axis eddy at a water inlet. The movable suspension type eddy-eliminating beam system comprises a vertical guide rail, a sliding trolley, an eddy-eliminating beam and winches; the vertical guide rail is arranged on the wall surface of a tunnel face of the water inlet; the sliding trolley can slide up and down along the vertical guide rail; the eddy-eliminating beam is suspended on the water surface and is used for eliminating the vertical-axis eddy; one winch is arranged on one side of the upstream part of a bank of the water inlet, and one winch is arranged on one side of the downstream part of the bank of the water inlet; one end of the eddy-eliminating beam is arranged on the sliding trolley through a planar support pivot capable of rotating in the horizontal plane; and a steel rope on the winch arranged on one side of the upstream part of the bank of the water inlet, and a steel rope on the winch arranged on one side of the downstream part of the bank of the water inlet are connected with towing points on the eddy-eliminating beam for adjusting and controlling the position of the eddy-eliminating beam on the water surface. The eddy-eliminating beam can float up and down with the change of the water level and can rotate on the water surface plane before a tunnel, so that the movable suspension type eddy-eliminating beam system has the advantages of wide waterhead adaptation range, large change amplitude and the like, and can prevent an air entrapping vertical-axis eddy from being formed in front of the water inlet, and thus the adverse effects on various buildings by the vertical-axis eddy are eliminated.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to a facility for eliminating vertical-axis vortices at water intakes or entrances of diversion tunnels. Background technique [0002] For water conservancy and hydropower projects such as water intakes or diversion tunnel entrances, when the submerged water depth of the water inlet is between the lower limit water level and the upper limit water level where the vertical axis vortex occurs, a vertical axis vortex of air entrainment may be formed in front of the water inlet. Especially for projects with large fluctuations in water level, when the water flow in front of the water inlet has the conditions to generate circulation, it is very easy to form a penetrating air-entrained vertical axis vortex in front of the water inlet. Once the vertical axis vortex is formed, it will not only affect the discharge capacity, but more seriously, ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical status and existing problems of the existing facilities for eliminating the vortex of the vertical shaft, the present invention aims to provide a new structure of the suspended vortex-eliminating beam that can float up and down with the change of the water level and can rotate in the plane to solve the existing problems. There are problems in the facilities for eliminating the vertical axis vortex at the water inlet, such as the small range of adaptable water head and the narrow range of the vertical axis vortex.

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