Pipeline leakage monitoring method and control unit, device and system

Abstract

The embodiment of the invention provides a pipeline leakage monitoring method and a control unit, device and system. When it is determined that water use equipment communicated with a pipeline segment to be detected is in a closed state, the monitoring mode is exerted, and it is avoided that normal water use of a user is affected. Under the monitoring mode, the pipeline segment to be detected is closed at the interval of preset time during the monitoring period, and when the pipeline segment to be detected is closed each time, a first pressure valve of the inner wall of the pipeline is obtained; if the change rate of the first pressure valve of the inner wall of the pipeline exceeds a preset threshold value, water leakage of the pipeline segment to be detected is determined. Whether the pipeline segment to be detected leaks water or not can be accurately judged through the water pressure valve of the inner wall of a sampling pipeline. According to pressure detection, a pressure sensor low in power consumption can work by adopting a low-power source without increasing pressure loss in a water route, and compared with an existing impeller flowmeter, the pressure sensor has a larger detection range.

Description

technical field [0001] The invention relates to water leakage detection of water equipment or pipelines, in particular to a pipeline leakage monitoring method, control unit, device and system. Background technique [0002] A plurality of water use equipment in the family and between the water inlet main pipes are sealed and connected by pipelines. However, there are often various degrees of water leakage in the pipeline or water equipment caused by various reasons such as pipeline damage, sealing device failure, and improper human operation. In order to avoid the waste of water resources caused by the above situation, in the prior art, an impeller flowmeter is installed in the pipeline to detect whether there is water leakage. However, the impeller flowmeter must be connected in series in the waterway. When there is water leakage, the impeller flowmeter will be driven to start measurement during the flow of water in the pipeline. Obviously, the impeller flowmeter in series...

AI Technical Summary

Problems solved by technology

Obviously, the impeller flowmeter in series is equivalent to adding an additional load, which increases the pressure loss of the waterway and affects the performance of the back-end water equipment

In addition, impeller flowmeters of different diameters need to be adapted to pipelines of different diameters, and the universal type is poor.

Especially in large-diameter pipelines, if a large-diameter impeller flowmeter is selected, the starting inertia will increase, and small flow leakage cannot be detected; if a small-diameter impeller flowmeter is used, the measured value will soon reach the upper limit. Detection range is too narrow

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