Automatically adjust multi-level water measuring weir

Abstract

The invention discloses an automatic adjustment multi-stage water measuring weir, which comprises a weir plate, on which 2 to 3 weir openings are sequentially opened from low to high, and the center lines of each weir opening overlap; a transmission device is arranged above the top of the weir plate , the transmission device includes a transmission rod parallel to the top edge of the weir plate, one end of the transmission rod is provided with a transmission motor, the outer surface of the weir plate is provided with a weir gate that slides up and down between the weir openings and the number of weir gates is one less than that of the weir openings. A pair of guide grooves are arranged symmetrically and parallel to the center line, and the pair of guide grooves are arranged on both sides of the weir gate and parallel to the weir gate. On the weir plate, 1 to 2 pairs of transmission belts are arranged symmetrically and parallel to the center line, and the transmission belts Installed on the outside of the guide groove, the device can effectively adapt to the situation of large fluctuations in the downstream water level. Ensure the flow state of the water measuring weir, prevent it from becoming submerged flow, and make it impossible to observe; avoid the high water level upstream of the water measuring weir due to the excessive setting of the weir opening, which will affect the seepage state of hydraulic structures.

Description

technical field [0001] The invention relates to the field of seepage flow measurement, in particular to an automatic adjustment multi-stage water measuring weir. Background technique [0002] The water measuring weir refers to the overflow weir installed in the channels and tanks to measure the flow of water. It is the main equipment for observing the seepage flow. It consists of a weir groove, a water measuring weir plate, and a water level measuring device. [0003] The water measuring weir has two flow states: free overflow and submerged outflow. In order to improve the measurement accuracy, free overflow should be used, but free overflow has higher requirements on the downstream water level of the outlet, and the flow calculation formula of the water measuring weir is mostly an experimental formula. The working conditions are consistent with the experimental conditions of the experimental formula, so the installation of the weir and the flow state of the channel in fron...

AI Technical Summary

Problems solved by technology

Due to the inability of the traditional water measuring weir to solve the sharp rise in the downstream water level, the water measuring weir cannot work during the critical period when the seepage of the dam needs to be paid most attention to, such as flood outbreak or dam discharge, and cannot timely and effectively judge the safety performance of the dam.

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