A method and device for quickly adjusting the uniform flow of a water tank
A technology of uniform flow and water tank, applied in the control/regulation system, flow control using electrical devices, flow control, etc., can solve the problems of time-consuming, fuzzy over-current characteristics, affecting test efficiency, etc., to avoid ambiguity and save money. The effect of adjusting time and improving test efficiency
Active Publication Date: 2019-03-01
HOHAI UNIV
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Problems solved by technology
The control of the flow characteristics of the common flat-plate type, stacked beam type, upright vane type and cable-stayed orifice type tailgate is often vague, so it is basically the mode mentioned above in use, which consumes a lot of time and has a great impact on There is a strong dependence on the experience of the experimenter, which seriously affects the efficiency of the experiment
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[0055] Taking the right-angled triangular weir as an example, the water measuring weir tailgate device of the present embodiment is as follows: Figure 1-Figure 4 As shown, it mainly includes the water measuring weir, the transmission system, the weir flume and the tail section of the flume. The water measuring weir 1 is a flat plate, and the upper part is set as a right-angled triangle flow port to measure the flow through the weir. The water measuring weir 1 can move up and down along the water measuring weir track 31 of the weir tank; the two sides of the upper and lower ends of the water measuring weir 1 are respectively connected Transmission belt 21, the transmission belt 21 is driven by the roller 22 on the connecting rod 23, the connecting rod 23 is supported by the connecting rod support 32 at both ends of the top of the weir flume, and the stepper motor 24 fixed on the connecting rod support 32 Drive, the stepper motor 24 can realize precise control in both positive ...
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The invention discloses a method and a device for quickly regulating the uniform flow of a flume. The device is used for a right-angled triangle measuring weir tail gate whose opening can be accurately regulated, and comprises a measuring weir, a transmission system, a weir trough and a flume tail section. The opening of the tail gate and the base slope of the flume are deduced based on a right-angled triangle measuring weir discharge formula and a Chezy formula, and quantitative calculation on the uniform flow regulation parameters is realized. The method uses the above device to quickly regulate the uniform flow of the flume and comprises steps: a flume roughness coefficient is determined, regulation parameters are calculated, initial system regulation is carried out, fine tail gate regulation is carried out, fine base slope regulation is carried out and the like. The method and the device overcome the fuzziness of needed repeated approximation in the case of conventional tail gate regulation, dependence on the experience of researchers is reduced, quick acquisition of the flume uniform flow conditions is facilitated, more than half regulation time can be saved, and the test efficiency is greatly improved.
Description
technical field [0001] The invention relates to a water conservancy test method and device, in particular to a method and device for quickly adjusting the uniform flow of a water tank. Background technique [0002] Flume is an important basic equipment in hydraulic experiments, and it is indispensable in the research of basic hydraulic theory and hydraulic engineering problems. Taking the common rectangular variable slope circulating water tank as an example, its basic structure includes four parts: water storage and supply system, bottom slope adjustment system, tailgate and water tank. The first three parts correspond to flow Q, tank bottom slope S and tailgate overcurrent characteristics respectively. adjustment. Tailgate overcurrent characteristics refer to the relationship between the flow through the tailgate and the water depth at the tail. By adjusting the opening of the tailgate, the same water depth at the tail can obtain different discharge flows, and then differ...
Claims
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IPC IPC(8): G05D7/06
CPCG05D7/0635
Inventor 唐洪武刘全帅唐立模王浩史常乐陈红刘震高明王世昭
Owner HOHAI UNIV