Method for continuously monitoring leakage of large buried pressure water pipe and booster early warning system

Abstract

The invention discloses a method for continuously monitoring the leakage of a large buried pressure water pipe. The method comprises the steps that (1), continuously-monitored signal collection equipment is arranged inside the large buried pressure water pipe, and signal measurement and analysis equipment is arranged outside the pipe; (2), basic signal data of vibration, strain, sound waves and pressure changes when the monitored pressure water pipe operates under the normal working condition are measured, the leakage process of the monitored pressure water pipe is simulated, and characteristic signal data of vibration, strain, squeal and water pressure changes in the leakage process are measured; (3), the monitored data are analyzed, a model for reflecting the working state of the monitored pipe is built, the degree of hazard level and an early warning threshold are determined, and an analysis judgment module and a dangerous case issuing module are developed; (4), the monitored pressure water pipe is monitored continuously, and when the hazard level reaches the early warning threshold, an early warning is given.

Description

technical field [0001] The invention is applicable to the technical field of safety monitoring of large-scale pressure water pipelines, relates to cross-basin water diversion projects, water conservancy and hydropower projects, and municipal engineering, and is also applicable to pressure pipelines or pressure vessels for transporting or storing other liquid or gaseous substances in petrochemical industries. The safety monitoring specifically relates to a continuous monitoring method for leakage of a large buried pressure water pipeline and a pipe burst early warning system. Background technique [0002] In order to solve people's livelihood water conservancy and ensure water supply in large and medium-sized cities, my country has built a large number of water diversion projects such as diverting Luanluan to Tianjin, Dongshen water supply, and diverting Dali to Qin. There are also large-scale cross-basin water diversion projects under construction and proposed South-to-North ...

AI Technical Summary

Problems solved by technology

The large-scale buried pressure water pipelines that have been built in my country mainly prevent the occurrence of pipe burst accidents through regular water cut-off and maintenance methods. Due to the long intervals between water cut-off and maintenance of large-scale buried pressure water pipelines (usually once a year), the maintenance period Short, the method of stopping water for maintenance cannot effectively prevent pipe bursts. Although some buried pressure water pipelines newly built or under construction in my country have monitoring instruments such as leakage meters buried outside the pipelines, they are restricted by various applicable conditions. , the effectiveness of the early warning pipe burst is not high, and the monitoring instrument is buried deep underground, so it is difficult to maintain and upgrade the technology. The continuous monitoring method of pipeline leakage and the early warning system of pipe burst to ensure the safety of water supply in large and medium-sized cities in my country and escort the sustainable development of social economy