Drainage pipeline self-generating flow and liquid level detection integrated wireless device and method

Abstract

The invention discloses a drainage pipeline self-generating flow and liquid level detection integrated wireless device and method. The device is installed in a municipal drainage pipeline inspection well, and the device comprises three parts of a stacked power generation and detection integrated unit, a power storage and supply unit, and a real-time calculation and master control communication unit. The stacked power generation and detection integrated unit utilizes water flow to drive independent power generation assemblies stacked from bottom to top to generate power, and transmits electric energy to the power storage and supply unit so as to supply power to the device. The real-time calculation and master control communication unit implements corresponding calculation methods on various parameters collected from the units to obtain real-time liquid level, flow, device working conditions and other information, further adjusts the working mode of the device, and finally wirelessly transmits the obtained pipeline and device information to a cloud end in real time. According to the device and method, integration of power generation, detection and communication is achieved, the device and method are suitable for real-time measurement of the liquid level and the flow of the municipal drainage pipeline under various flow conditions, and the device is a novel internet-of-things device which is efficient and easy to operate and maintain.

Description

technical field [0001] The invention belongs to the technical field of hydropower generation, flow detection and liquid level detection, and in particular relates to an integrated wireless device and method for self-generated flow and liquid level detection of drainage pipes. Background technique [0002] The structure of the urban underground water pipe network is huge and complex. Urban underground drainage pipes such as residential sewage pipes and rainwater pipes have problems such as difficult monitoring methods, complicated management, and high maintenance costs. At present, there is no set of scientific, mature, simple and effective methods. To monitor the liquid level and flow of the underground water pipe network in real time, so that the managers of urban underground drainage pipes can make overall planning, maintenance and renovation of the sewer. [0003] At present, the use of large-caliber flow measuring instruments, liquid level measuring instruments and other...

AI Technical Summary

Problems solved by technology

[0002] The structure of the urban underground water pipe network is huge and complex. Urban underground drainage pipes such as residential sewage pipes and rainwater pipes have problems such as difficult monitoring methods, complicated management, and high maintenance costs. At present, there is no set of scientific, mature, simple and effective methods. To monitor the liquid level and flow of the underground water pipe network in real time, so that the managers of urban underground drainage pipes can make overall planning, maintenance and renovation of the sewer.

[0003] At present, the use of large-caliber flow measuring instruments, liquid level measuring instruments and other devices is very expensive, and due to the particularity of the sewer pipeline, the water flow is often mixed with gravity flow and pressure flow, laminar flow and turbulent flow, uniform flow and mixed flow. The combined state flows in the pipeline, and it will fluctuate greatly with different times of the day, different seasons of the year, and different weather conditions, so it is extremely difficult to measure, and the adaptability of the measurement device is a big challenge

[0004] If the measuring device is installed inside the drainage pipe, it will increase the difficulty of installation, and the complicated flow conditions will easily cause damage and loss of such instruments, which will bring greater operation and maintenance costs; moreover, general municipal drainage pipes do not Too precise parameter measurement is required, so relatively mature large-diameter pipeline measurement devices are difficult to be widely used

[0005] Moreover, if this type of instrument needs external power supply, it will consume a huge amount of engineering for municipal wiring, which will increase the cost of wiring and the difficulty of installation; if it is powered by a battery, the device will be limited by the power and cannot guarantee full-time work. And the operation and maintenance cost of replacing the battery is high

[0006] In addition, in the case of large flow, the drainage pipe is filled with water. After the water enters the inspection well, the flow form changes from stable laminar flow and uniform gravity flow to unstable pressure flow. If only a single flow detection device is used at this time , the measured flow rate is extremely unstable and cannot reflect accurate flow information, and due to the existence of pressure difference, the liquid level of the inspection well under the condition of large flow rate will be higher than the top of the drainage pipe, and form a certain height. The detection of the overall flow also brings certain difficulties

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