Urban Water Supply Pipe Network Research Articles

Water supply network modeling and pipe burst analysis based on WaterGEMS

In recent years, the water supply task of urban water supply pipe network is more and more heavy, and leakage accidents of pipe network often occur, among which the most serious leakage accident is pipe burst accident. To solve this problem, this study uses WaterGEMS software to establish the topological structure of water supply pipe network, adopts the water supply pipe network model and computer technology to carry out dynamic analysis on pipe burst accident of pipe network, and uses golden section method to predict the water leakage caused by pipe burst accident state.

Leakage Reduction of Water Distribution Network System Based on the Observation Data of Water Leakage and Pressure of Actual Water Distribution Network System

As the main way of urban water use, water supply system is an important urban infrastructure. It plays an important role in guaranteeing people’s life and economic construction. In recent years, it has an overall and guiding influence on the city. The monitoring and leak detection of water supply network system has become one of the most important problems in the water supply network system. The purpose of this paper is to explore the leakage reduction of the water distribution network system under the observation data of water leakage and pressure based on the actual water distribution network system. This paper analyzes the different pipe diameter of pressure change on the influence of water leakage, and the effect of different decompression interval to reduce water leakage results show that the leakage and pipeline pressure changes exponentially, it changes with reduced pressure pipe installation of pipe diameter and valve for high same diameter of pipeline, decompression and leakage effect is more effective, for the decompression range of basically the same pipeline, pipe diameter, the greater the effect is more obvious. In this paper, we study a kind of based on the pressure signal and traffic signal of the existing urban water supply pipe network leakage recognition and positioning method, and carries on the simulation of urban pipeline leakage simulation test platform through test analysis, probes into the key technology of this method and improvement, to improve the accuracy and positioning precision of the method to detect leaks. The research results show that the simplest method can be realized and the best effect can be achieved through the summary analysis of existing studies. When the leakage coefficient is set as 1, the water leakage is about 600%, and the pressure value of the leakage node and the pressure monitoring point for 24h is shown. It is obvious that when the lowest pressure is 10h, the pressure value is 300%. Through the analysis and improvement of this method, it can realize the timely identification and positioning of leakage events, reduce economic losses, and guarantee people’s normal life.

Application of acoustic intelligent leak detection in an urban water supply pipe network

Abstract Different leakage detection technologies present different efficiency and precision of leakage detection in water distribution systems due to their own properties. This study aimed to investigate the use of acoustic sensors to locate the exact position of leaks, which work 24 hours per day in different modes, i.e. fixed installation and mobile exploration. The results showed that the maximum distance between the acoustic sensors installed on the pipeline was 380 m. Field application results indicated that detecting threshold of the distance was 300 m and the intensity ratio of leaking state noise (LSN) to background noise was 1.9 respectively. The pipeline length by manual hunting area (MHA) is 1.3 times longer than the acoustic logger tested area (ALTA), but the detected leakage points in MHA is 20% less than in ALTA. Furthermore, the cost of leakage detection in MHA was about 6,000 yuan/detected leakage point. That in ALTA was about 2,500 yuan/detected leakage point. The case study also indicates that the acoustic logger is a promising tool with the advantage of lower cost and faster detection, compared to manual ground listening with a sound stick. The acoustic leakage detection method can detect the leakage in different sized pipelines, whereas the manual detection was concentrated in small-sized pipelines.

Health evaluation of urban water supply pipe network using the Bayesian method based on triangular fuzzy number optimization

With the rapid increase of urbanization level in China, the accidents related to urban water supply pipe network occurred frequently due to the impacts of pipeline aging, environmental change and human factors, thus the health evaluation of urban water supply network has become one of the hot topics in recent years. Related researches mostly refer to qualitative and static analysis, some quantitative studies consider the influence of only one aspect on the status of water supply pipe network such as hydraulic, water quality and static structure, and cannot objectively reflect the health status of pipe network due to neglecting or simplifying the influence of internal hydraulic condition on the health of the pipe network. Comprehensively considering the influencing factors and the hydraulic mechanism during the operation process of pipe network, this study constructs a health evaluation index system for the water supply pipe network, and introduces the triangular fuzzy number theory into the traditional Bayesian water supply network health status evaluation model taking the uncertainty of model structure and data into account. Through applying the method to Yunhe county of Zhejiang Province China, some suggestions for the optimization and transformation of the regional water supply network are proposed, which can provide a basis for ensuring the safety of regional water supply and scientifically determining the renewal sequence of the pipe network.

Android APP Development of Remote Wireless Automatic Meter Reading System based on 3G

Urban water supply pipe network is critical infrastructure for the survival of people. Efficient operation of equipment, water supply and water safety are always received great attention from the government and operators. The existing way of manual meter reading and manual inspection has the drawbacks of waste time and labor. To solve this problem, we developed databases, software platforms and mobile terminal APP (Application) based on Android operating system to integrate a remote wireless automatic meter reading system based on the existing remote wireless automatic reading meter devices which are our previous research work. The system realizes the remote monitoring of the pipe network, and it also realizes the remote control of the monitoring nodes, such as the camera shooting, selection of monitoring node's working mode and so on, which data feedback is accurate and timely, monitoring methods is simple, fast and efficient. In addition, compared to traditional methods, the system greatly reduced the manpower and resources, reduce monitoring costs. And the tests and experiments show this remote wireless automatic meter reading and control system is useful and effective.

Research on Monitoring System of Water Supply Pipe Network Based on GPRS Technology

Urban water supply pipe network is an important part of municipal infrastructure systems, is the basis for the survival and development of the city. How to guarantee the safety operation of the water supply pipe network, to reduce water supply pipe network leakage rate, to prevent explosion occurred, and fundamentally improve the water supply pipe network operation management level, become the water supply enterprise high attention and urgent problem to be solved. Therefore, this paper studies monitoring system of water supply pipe network based on GPRS. First, the characteristics and the importance of the water supply pipe network, so using GPRS technology. Then, detailing the characteristics and advantages of GPRS technology. Secondly, introduces the composition of the urban water supply pipe network monitoring system. Finally, the realization of specific functions will be described. Application of monitoring system for real-time monitoring, fully guaranteed the security of the water supply system.

Design and Development of the Urban Water Supply Pipe Network Information System Based on GIS

Urban water supply systems are the primary guarantee for life and enterprises to work orderly, according to the requirements of water resource department and the technical feasibility for the management system, the water supply pipe-network information system was designed and developed. The system was developed in C # language and SuperMap Objects as secondary development components. The applicability and weaknesses of the system was analyzed in order to provide better service for the water conservancy work digitally.

Analysis of Causes for Pipe Explosion of Urban Water Supply Pipe Network

There is a great many reasons for pipe explosion of urban water supply pipe networks. Three major aspects of water supply pipe explosion causes were analyzed comprehensively in this paper: natural factors, pipeline factors and human factors, to raise awareness about the causes of pipe explosion.

Research on Network Characteristics for Urban Water Supply Pipe Network Based on GIS

Using GIS to analysis urban water supply pipeline network characteristic, it can make full use of GIS spatial data management and graphics processing advantages. This paper is on the basis of clarified the importance of the dynamic characteristics, it include three aspects of research. First, topological graph modeling, establishes the section between the nodes and directed graph, and uses adjacency list to store; Second, spatial database structure, it designed by the topography and galleries, some data sets, the line data set, the surface data and document data sets of pipe network GIS spatial data structure; Third, nodal flow dynamic characteristics, analysis of node flow of small changes ,which can lead to node pressure and the change in the flow section, and build the mathematical model. In this paper, the research contents to ensure the security of urban water supply, improve the level of urban management information, improve emergency management capability of urban is of great significance.

Key Technology on Decision Support System for Urban Water Supply Pipe Network Emergency

Urban water supply pipeline emergency accident in such aspects as occurrence, development and evolution is uncertain, it is necessary for different stages of emergency situation carries on the scientific assessment, decision support systems to aid decision making. Based on auxiliary decision-making problems in DSS, research its key technologies. First of all, from the knowledge acquisition, interpretation, presentation and reasoning of DSS system structure research; Then the FCR reasoning algorithm, through the fuzzy knowledge reasoning rules, cases, fuzzy knowledge reasoning part done between different library calls and internal reasoning to solve; Finally, the system development of the MVC architecture, and expounds its advantages. The study content of this paper to form a relatively complete city operation and management system, to deal with emergencies ability to water supply network, raise the scientific nature of the emergency management system is of great significance.

Wireless Monitoring and Scheduling System of Urban Water Supply Network

Currently, data communications used in the monitoring and scheduling system of urban water supply network can be simply divided into wireless and wired. While the wireless data communications with network flexibility, less investment, easy maintenance, cost-effective advantages. Therefore, the wireless data communications has become a major data transmission in urban water supply scheduling. The wireless transmission of state parameters in urban water supply pipe network was studied in this paper. This paper presents a wireless monitoring and scheduling scheme based on the short message transmission technology in urban water supply network. It introduced the hardware components of the system, and wireless data transmission software.