Fast distributary water supply device for branch flow model

Abstract

The invention discloses a fast distributary water supply device for a branch flow model. The fast distributary water supply device comprises a circulating pool, multiple distributary pipelines, multiple collecting pools and the branch flow model; one ends of the distributary pipelines pass into the circulating pool to pump water, discharging pipes can be adjusted to achieve distributaries throughconversion valves, the other end of at least one distributary pipeline is coonnected to each collecting pool, and water outlets of collecting pools is communicated with branches of the branch flow model. The fast distributary water supply device is simple in manufacturing, low in price, short in flow stabilization time and fast and accurate in flow switch; the fast distributary water supply device is applicable to distribution on multi-branch branch flow key water supply in the constant flow model tests, and the water supply is in the mode of distribution flow-total flow-distribution flow.

Description

technical field [0001] The invention relates to a water supply device for a water flow model test with a river center island or a water diversion facility, in particular to a rapid diversion water supply device for a branch channel water flow model, which is applied to a constant flow river channel model test. Background technique [0002] There are often island-shaped landforms in the river channel to separate the water flow, and different human activities will also lead to the branching of the river channel or the change of the flow path. The water supply facilities at the model water boundary are the focus of the river channel model test. When it comes to water flow boundaries, the traditional practice is to supply water to each branch separately, and each branch is supplied by a parallel water supply system consisting of one or more water pumps-pipes-flowmeters-outlet pipes and other parts. When it is necessary to adjust the diversion flow, each branch port needs to adju...

AI Technical Summary

Problems solved by technology

When it is necessary to adjust the diversion flow, each branch port needs to adjust the flow through the valve. After the adjustment, the fluctuation of the water flow will generally take a long time to stabilize the water flow, which will affect the test efficiency; and other system errors will inevitably occur during the artificial adjustment process. , resulting in a small change in the sum of the flow rates of all branches after adjustment. Considering that the diversion ratio of general engineering itself does not vary greatly, the relative error of the test is too large, which affects the test accuracy.

Electromagnetic flowmeters with relatively high precision are also expensive (the price of a single unit is generally more than 10,000 yuan), complicated to install, need to be stable for a long time after flow adjustment, and have relatively high requirements for other external environments such as floor space and water quality. High disadvantage

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