Spherical trash device

Abstract

The invention discloses a spherical trash device. The device comprises a hemispherical shell-shaped trash blocking cover (2) arranged at the inlet of a water discharge hole (1); the surface of the shell of the hemispherical shell-shaped trash blocking cover (2) is provided a connecting lug plate (3) which are uniformly distributed along the circumference; the connecting lug plate (3) is connectedwith a double lug (6) which is pre-embedded on an annular steel plate (5) at the inlet of a water drain hole (1) through a bolt component (4); and the annular steel plate (5) is connected with the inlet end of a steel pipe (7) on the inner wall of the water drain hole (1). The invention has the advantages of no deformation and internal stress caused by welding, good overall quality, high overall strength and rigidity, uniform stress and good vibration resistance, and the device can be used in a water drain pipeline with high flow speed, and effectively ensures the safe operation of a water drain valve; and the water flow can collide with each other to dissipate energy in the hemispheroid after passing through the hemispheroid, so that the flow velocity is reduced, the kinetic energy of water passing through the water drain valve is reduced, and the safe operation of the water drain valve is facilitated. The invention effectively reduces the cavitation erosion phenomenon at the inlet ofthe pipeline and is beneficial to protecting the pipeline.

Description

technical field [0001] The invention relates to a spherical dirt blocking device, which belongs to the technical field of metal structures of water conservancy and hydropower projects. Background technique [0002] As for the discharge valve, it is mainly used for flood discharge, venting and discharge of ecological flow in pipelines. It is generally installed at the bottom of the dam body. If conditions permit, trash-blocking devices are generally installed at the entrance, while traditional technology trash-blocking devices are mostly welded with steel bars, round steel or steel plates. When the flow rate is high, the welded trash-stopping device vibrates strongly, and as the flow rate increases, Intensified vibration causes damage to the grille, and the damaged grille entering the pipeline will cause the drain valve to be blocked, affecting water discharge, and sometimes causing the drain valve to be damaged and unable to open and close. , but there is a risk of dirt ent...

AI Technical Summary

Problems solved by technology

[0002] As for the discharge valve, it is mainly used for flood discharge, venting and discharge of ecological flow in pipelines. It is generally installed at the bottom of the dam body. If conditions permit, trash-blocking devices are generally installed at the entrance, while traditional technology trash-blocking devices are mostly welded with steel bars, round steel or steel plates. When the flow rate is high, the welded trash-stopping device vibrates strongly, and as the flow rate increases, Intensified vibration causes damage to the grille, and the damaged grille entering the pipeline will cause the drain valve to be blocked, affecting water discharge, and sometimes causing the drain valve to be damaged and unable to open and close. , but there is a risk of dirt entering the pipeline and damaging the drain valve, so the existing technology is still not perfect and needs to be further improved

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