Vortex prevention column vortex elimination device and method of rear wall of sealed type water feeding tank

Abstract

The invention relates to a vortex prevention column vortex elimination device and method of a rear wall of a sealed type water feeding tank. The vortex prevention column vortex elimination device comprises the sealed type water feeding tank and a water suction pipe, wherein a trumpet pipe is arranged at one end, arranged in the sealed type water feeding tank, of the water suction pipe; a trumpet opening is arranged on the trumpet pipe; the vortex prevention column is mounted at the rear side of the trumpet opening; one face, facing the trumpet pipe of the vortex prevention column, is a front panel; one face, opposite to the trumpet pipe, of the vortex prevention column is a rear panel; two faces, facing a side wall of the sealed type water feeding tank, are arc-shaped surfaces and the width of the front panel is less than the length of the rear panel; the length between the rear panel of the vortex prevention column and a rear wall of the sealed type water feeding tank is 0.12 to 0.21 time as much as the diameter of the trumpet opening; the height of the vortex prevention column is 1.8 to 2 times as much as the diameter of the trumpet opening. According to the vortex prevention column vortex elimination device and method, provided by the invention, the vortex prevention column is used for separating the water flow of the rear wall of the water feeding tank and filling a water body at a position with vortex and the water body is scattered so that the water body is recombined and a vortex velocity of the water flow is reduced, and furthermore, the effect of preventing wall attachment vortex of the sealed type water feeding tank from occurring is realized.

Description

technical field

[0001] The invention relates to a vortex-eliminating device and a method for an anti-vortex column on the rear wall of a closed water inlet pool, and belongs to the technical field of pumping station engineering design. Background technique

[0002] The closed water inlet pool is to install a concrete cover plate at the position of the pump beam of the open water inlet pool to close the open water inlet pool, reduce the free water surface, avoid setting the water inlet pool structure, reduce the flow interference in the pool, and prevent the generation of surface vortex . However, the effect of preventing and controlling the Coanda vortex in the inlet pool is not obvious. Among the wall-attached vortexes of the closed inlet pool, the rear wall vortex is the most harmful one. After the rear wall vortex is generated, it enters the trumpet pipe, making the inflow in the impeller uneven, affecting the hydraulic efficiency of the entire pumping station, and what ...

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