Arrangement method of V-shaped hollow sill for lateral water distribution pool

By adopting a V-shaped hollow bottom cushion layout method with variable angles in the water distribution pool, the bottom cushion angle is adjusted according to different flow conditions, the problem of uneven flow state under lateral water inlet conditions is solved, and better flow state improvement effect and stable operation of the pump station is achieved.

CN119670215AActive Publication Date: 2025-03-21HOHAI UNIV +2
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Patent Information

Application Number
CN202411806232.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-21
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

Under lateral water inlet conditions, the water separation tank changes in flow velocity and pressure due to centrifugal force and inertia effects, resulting in uneven flow distribution, vortex and reflux, which affects the safe and efficient operation of the pump station.

Method used

A V-shaped hollow bottom-camp layout method with variable angle is used to numerical simulation of different flow conditions, calculate the outlet comprehensive uniformity, fit the unimodal function curve, and associate the Froud numbers to adjust the bottom-camp angle and optimize the flow state.

Benefits of technology

It effectively reduces the impact of adverse flow states, improves the flow state uniformity of the water separation tank, enhances the stable operation of the pump station, reduces the engineering cost, and increases the benefits of the water separation station hub.

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Abstract

The invention discloses a V-shaped hollow sill arrangement method for a lateral water distribution pool, which comprises the following steps of: determining the water level and the flow velocity of inlet incoming water, and calculating the Froude number Fr of the inlet; a plurality of incoming flow conditions are simulated through numerical values, and the comprehensive outlet uniformity is calculated according to the lateral diversion outlet section of the water diversion pool; fitting the data scatter curve to obtain a single-peak function curve of the lateral outflow uniformity along with the change of the angle of the diversion side sill under each incoming flow condition, and recording the peak value of the curve; obtaining an exponential growth curve function of a lateral outflow uniformity peak value changing along with Froude number under each incoming flow condition; and obtaining and adjusting the divergence angle of the sill diversion side based on the determined Froude number. The variable-angle V-shaped sill is arranged according to different incoming flow conditions, so that the variable-angle V-shaped sill is suitable for various incoming flow working conditions, the construction cost is reduced, and the hub income of the diversion gate station is improved.
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