Shaft with vertical eddy-flow energy dissipaters of hole stoppers

Abstract

The invention relates to a shaft with the vertical eddy-flow energy dissipaters of hole stoppers. The problems of low energy dissipation rate, difficult aeration of a wall face, large vibration of a shaft and the like, which occur in an eddy-flow shaft of a traditional high dam with a high water head and large flow rate, can be effectively solved, so that the energy dissipation rate of a drainage passage is enhanced, and the phenomena of vibration of a shaft and cavitation, cavitation corrosion and destruction of a wall face are also reduced or avoided. The shaft with the vertical eddy-flow energy dissipaters of the hole stoppers is characterized in that a volute chamber is communicated with a water diversion channel by a water inlet on the volute chamber, the upper end of the volute chamber is provided with a vent hole, the lower end of the volute chamber is provided with a transition section, the lower end of the transition section is connected with a cylindrical shaft section, a plurality of sections of hole stopper bodies arranged at intervals are arranged on the shaft section, the bottom end of the shaft section is provided with a water cushion pool, and the upper end of the water cushion pool is provided with a water outlet section communicated with the shaft section; according to the shaft with the vertical eddy-flow energy dissipaters of the hole stoppers, the shaft section is designed into the eddy-flow energy dissipaters of hole stoppers arranged at intervals, so that the energy dissipation efficiency of water flow can be increased, and the problems of cavitation corrosion and cavitation, which are easy to occur in a traditional eddy-flow shaft, are avoided; and meanwhile, the vibration of the shaft can be effectively reduced.

Description

technical field [0001] The invention relates to a swirl shaft in water conservancy and hydropower projects, in particular to a shaft with a vertical swirl energy dissipator for a hole plug. Background technique [0002] There are many high dams under construction and proposed in my country, and the drainage structures have large flow rate and high flow velocity. The control and prevention of diseases of high head drainage structures have always been the focus and hotspot of research by water conservancy workers, especially energy dissipation, Scouring, cavitation cavitation, turbulent vibration and other problems are more difficult problems that need to be solved urgently. [0003] The swirl shaft is a new type of flood discharge and energy dissipation facility. The diversion channel of the energy dissipator in the swirl shaft and the shaft discharge channel are not on the same longitudinal axis. Since the water flow of the diversion channel enters the vortex chamber from the...

AI Technical Summary

Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a vertical shaft with a plug vertical swirl energy dissipator, which can effectively solve the problem of existing high head, large flow and high dam swirl shafts. Low energy dissipation rate, difficult wall aeration, large shaft vibration and other problems, so as to not only improve the energy dissipation rate of the discharge channel, but also reduce shaft vibration and wall cavitation cavitation damage

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