Monitoring device for flow of urban drainage pipeline

Abstract

The invention discloses a monitoring device for the flow of an urban drainage pipeline, comprising an electric wave flow meter, an ultrasonic Doppler flow meter, a liquid level sensor and a data collecting and processing unit, wherein the electric wave flow meter, the ultrasonic Doppler flow meter and the liquid level sensor are arranged at the top of the pipeline; and the data collecting and processing unit is arranged below a shaft lid. The monitoring device disclosed by the invention has the characteristics of being simple in structure, easy to install, convenient for maintenance, wide in flow detection scope and high in precision, and has better adaptability to water conditions and full-pipe-flow and non-full-pipe-flow water drainage.

Description

technical field [0001] The invention relates to the technical field of liquid flow measurement and detection, in particular to a flow monitoring device for urban drainage pipes. Background technique [0002] At present, the drainage terminals in urban drainage projects include various types such as square culverts and round pipes. In the drainage terminals, there are also cases of full pipes and partial pipes, and the water body conditions are also different. These factors have caused great problems for flow monitoring. Great difficulty. Generally speaking, it is necessary to adopt suitable monitoring methods for different hydrological conditions, and the specific monitoring technology needs to match the type of drainage terminal. These differences also put forward high requirements for relevant test methods. So far, there is no relatively mature solution that can meet the online monitoring of the flow of different urban drainage pipes and culverts. [0003] There are two ...

AI Technical Summary

Problems solved by technology

[0003] There are two main types of online flowmeters used in urban drainage pipes and culverts, one is the non-contact online flowmeter represented by the radio wave flow meter, and the other is the contact flowmeter represented by the ultrasonic flowmeter. The instrument is usually suitable for outdoor flow monitoring in large scenes, but it is not suitable for full pipe conditions, and cannot perform online measurement under full pipe conditions

Ultrasonic time-of-flight flowmeters in ultrasonic flowmeters have higher requirements on water body conditions, and are mostly used in water supply systems, which are not suitable for urban drainage monitoring; while ultrasonic Doppler flowmeters have better adaptability to water body conditions and can be used for a long time. It operates stably in harsh environments, but the installation location is limited, and it is easily affected by sedimentation when installed at the bottom. When installed at the top, it may not be possible to measure the partial pipe

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