System and method for monitoring leakage of non-metal pipeline

Abstract

The invention relates to a pipeline leakage monitoring technology, and aims to provide a system and a method for monitoring leakage of a non-metal pipeline. The system comprises a resistance value detection module, an axial monitoring electrode which is arranged right below the outer side of the pipeline in the axial direction, and an annular monitoring electrode which is arranged on the wall of the pipeline and can be in contact with a conveyed medium, one end of the axial monitoring electrode is sequentially connected with the resistance value detection module and the annular monitoring electrode through wires, the annular monitoring electrode and the terminal of the annular monitoring electrode are kept insulated from the axial monitoring electrode and the pipeline installation environment, the resistance value detection module is connected with a communication module through a signal line, the communication module is connected to a leakage analysis module in a wired or wireless communication mode, and the leakage analysis module is used for judging whether pipeline leakage occurs or not according to the resistance monitoring data change uploaded by the communication module. Detection equipment adopted by the system and the method is simple, complex detection equipment is not needed, the test method is easy to realize, and the cost of non-metal pipeline leakage monitoring isreduced.

Description

technical field [0001] The invention relates to pipeline leakage monitoring technology, in particular to a system and method for monitoring non-metallic pipeline leakage. Background technique [0002] Pipelines are the core facilities for energy and water transportation, and are the lifelines for national economic development and human survival. With the adjustment of my country's energy structure and the acceleration of urbanization, non-metallic pipelines are widely used in major national projects, such as high-pressure jumper pipes in tidal flats and shallow sea oil industry, and gas transmission pipelines in urban gas pipeline networks. , as a cooling water circulation pipe in nuclear power plants, and it is also an ideal substitute for oil well water injection pipes and shallow sea medium and low pressure marine hoses. my country has become the country with the largest output and demand of non-metallic pipes, and the application prospects are very broad. [0003] Non-m...

AI Technical Summary

Problems solved by technology

This method has been successfully applied in metal pipelines, but in non-metal pipelines, due to the fast attenuation speed of sound waves in non-metal (plastic) materials, the propagation distance is short, and the system construction cost is high.

Moreover, this method is greatly disturbed by external noise and produces many false alarms, so the acoustic wave detection technology cannot be applied to the leakage of non-metallic pipelines

In optical fiber detection technology, it is difficult to decouple the optical fiber signal due to the influence of temperature and strain factors, and the optical fiber material is easy to break, requiring special maintenance, which limits its application

Therefore, in the leakage monitoring of non-metallic pipelines, there is still a lack of an effective leakage monitoring technology.

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