Runoff measuring device and runoff measuring method
A measuring device and flow measurement technology, applied in fixed measuring chambers, etc., can solve problems such as difficulties in accurate flow monitoring, inability of flowmeters to measure flow accurately, and errors prone to occur
Active Publication Date: 2020-11-10
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
[0003] However, it is very difficult to accurately monitor the flow of rainfall, runoff and domestic sewage in the community during normal data collection, mainly because the water flow is very unstable, and traditional flow meters cannot measure the flow very accurately, which is prone to errors
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[0045] It can be seen from the background art that the traditional flowmeter cannot measure the flow rate very accurately.
[0046] Affected by the complex environment in the field, most of the flow measurement methods are to set up a sump at the water outlet, but the sump can only measure the total amount of flow, and cannot form the flow process; triangular weirs are commonly used in weir flow measurement at the present stage It has the characteristics of low design cost and convenient use. The traditional triangular weir is usually used for the measurement of steady flow, but the accuracy of unsteady flow is poor. At the same time, since most of the triangular weirs require manual measurement and calculation, it is difficult to obtain an approximately continuous flow process.
[0047]In order to measure the flow rate quickly, conveniently and accurately, the embodiment of the present invention provides a runoff measuring device, including: a weir box with a flow measuremen...
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The invention discloses a runoff measurement device. The device comprises a weir box on which a flow measurement weir is formed; a first liquid level sensor arranged in the weir box to detect water level change in the weir box, thereby acquiring a first wave level change signal; a liquid collecting box connected with the weir box, wherein an upper plane of a bottom plate of the weir box is higherthan an upper opening of the liquid collecting box, thereby facilitating the liquid flowing into the weir box to flow into the liquid collecting box along a flow measurement weir; a second liquid level sensor arranged in the liquid collecting box so as to detect the water level change in the liquid collecting box, thereby acquiring a second water level change signal; a receiving processing unit suitable for receiving the first water level change signal and the second water level change signal, and identifying the first flow according to the first water level change signal and identifying the second flow according to the second water level change signal. By adopting a way of measuring the flow through the combination of the weir box and the liquid collecting box, a length of water flow process is processed in a segment way, and the precise measurement of the water flow can be reached whether the flow is stable or instable.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of runoff measurement, and in particular, to a runoff measurement device and a runoff measurement method. Background technique [0002] In recent years, with the acceleration of urbanization, floods and waterlogging disasters in cities have occurred frequently, and the research on urban hydrology has become a research hotspot. Accurate measurement of urban internal flow is an important part of urban hydrological quantitative research on urban internal runoff, and it has practical significance in scientific research and production practices such as urban stormwater simulation and sponge cities. [0003] However, it is very difficult to accurately monitor the flow of rainfall runoff and domestic sewage in the community during normal data collection. This is mainly because the water flow is very unstable. Traditional flow meters cannot measure the flow very accurately and are prone to erro...
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IPC IPC(8): G01F11/28
CPCG01F11/28
Inventor 杨志勇刘明阳高希超刘家宏邵薇薇冯杰尚雨陈冲
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES