An on-line monitoring system and monitoring method for buried pipeline leakage

Abstract

The invention relates to a buried pipeline leakage online monitoring system and monitoring method. In the system, N buried pipeline leakage online monitoring devices are located in the slave station in parallel, at least one commercial signal transmission module 4G / 5G server is located in the master station, and the slave station and The main station adopts wireless communication, the 4G / 5G server side of the commercial signal transmission module is connected to the commercial server, the narrow piezoelectric chip of the online monitoring device is installed on the proximal surface of the strip waveguide, and the ultrasonic signal transmitting / receiving module is connected to the wire through the wire The negative is connected to the narrow piezoelectric wafer. The ultrasonic signal transmitting / receiving module, the signal conditioning module, the signal sampling module and the microcontroller module are integrated on the circuit board and controlled by the microcontroller module. The distal face of the ribbon waveguide sticks out of the housing and is inserted into the soil surrounding the pipe. During leakage monitoring, the signal generated by the monitoring device is sent to the commercial server, and the data processing module installed in the commercial server compares the changes of the signal to judge the leakage degree of the pipeline.

Description

technical field [0001] The invention relates to an online monitoring system and monitoring method for buried pipeline leakage, in particular to an online monitoring system and judgment for leakage of buried water pipelines and oil pipelines, and belongs to the field of structural health monitoring in the fields of petrochemical, urban public and other pipelines. This method is suitable for long-distance and large-area online long-term monitoring of buried pipeline leakage, or for non-buried pipelines, but pipeline leakage can cause changes in the viscous properties of the surrounding environment. Background technique [0002] Buried pipelines are widely used in petrochemical, urban public and other fields. Buried pipelines with a length of tens of thousands of kilometers will inevitably suffer from load shocks, earthquakes, aging, and accidental external damage. These factors are the main causes of leakage. The leakage of buried pipelines is difficult to locate and monitor, ...

AI Technical Summary

Problems solved by technology

This technology cannot meet the rapid detection of large-scale pipelines; KP 1020170005401 announced a continuous leak location detection system, which transmits the acoustic signal of water supply pipeline leakage from the ground through the wireless network, and uses the acoustic information to analyze the operation terminal to judge the possibility of water leakage

This method effectively reduces the workload of inspectors and increases the monitoring range, but the patent still judges water leakage based on acoustic signals and cannot eliminate the interference of environmental noise; JP2018013407 discloses a water leakage detection system, which is based on water leakage detection The principle of short circuit caused by water leakage around the meter and the detection belt works to detect the possibility of water pipe leakage

This method is more suitable for leakage detection of water pipelines with relatively clear leakage locations, but it cannot monitor pipelines with unclear leakage locations; CN201510166892.7 discloses an oil leakage detection device and method for oil pipelines, which utilizes leaks and blockages in oil pipelines Compared with the negative pressure wave method, this method has no substantial improvement, and also has poor positioning accuracy, which can easily lead to false alarms; JP2017145036 announced a double The shell leak detection system and the double-shell structure of the underground tank. When the system is monitored, two layers of pipes and multiple leak detection sensors are used to form a leak detection device at the site to be monitored, and a Wi-Fi control alarm system is built to notify the oil leakage information in time. Relevant personnel, the structure of the device is complicated, there are many equipments, and it is not suitable for pipelines where the leakage location is not clear

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