Acoustic detection technology for gas pipeline leakage

2013 ◽  
Vol 91 (4) ◽  
pp. 253-261 ◽  
Author(s):  
Qingqing Xu ◽  
Laibin Zhang ◽  
Wei Liang
Keyword(s):  
Gas Pipeline ◽  
Acoustic Detection ◽  
Detection Technology

Fish Bioacoustics and Behavior: Passive Acoustic Detection and the Application of a Closed-Circuit Rebreather for Field Study

2001 ◽  
Vol 35 (2) ◽  
pp. 19-28 ◽  
Author(s):  
Phillip S. Lobel
Keyword(s):  
Behavioral Ecology ◽  
Daily Basis ◽  
Open Circuit ◽  
Acoustic Detection ◽  
Ecological Processes ◽  
Detection Technology ◽  
Scientific Goal ◽  
Species Specific ◽  
Passive Acoustic ◽  
And Behavior

The simple thesis of this paper is that using rebreathers to study fish behavioral ecology, especially bioacoustics, is well worth the expense and additional training required. The scientific goal of my bioacoustic research is to determine which fishes produce species-specific sound patterns exclusively with explicit acts of courtship and mating. This provides scientific insight into evolutionary and ecological processes and also provides data necessary to develop the passive acoustic detection technology for monitoring fish reproduction. When used on a daily basis, rebreathers, in my experience, are economical and as practical as open circuit scuba. This is based both on the costs of diving as well as the efficiency of gathering useful data. The use of open circuit SCUBA while conducting acoustic recordings results in a loss of at least 40% of the data due to the bubble noise from a divers breathing. Rebreathers also provide extended bottom time, especially in shallow water, which enhances a diver's ability to observe fish and gather acoustic-behavioral data.

Acoustic Detection Technology Based on Fiber Bragg Grating Fabry-Perot Interferometer in Liquid Medium

2013 ◽  
Vol 33 (9) ◽  
pp. 0906001 ◽  
Author(s):  
张伟超 Zhang Weichao ◽  
赵洪 Zhao Hong ◽  
刘通 Liu Tong ◽  
王国利 Wang Guoli ◽  
李锐海 Li Ruihai
Keyword(s):  
Liquid Medium ◽  
Fiber Bragg Grating ◽  
Bragg Grating ◽  
Acoustic Detection ◽  
Detection Technology ◽  
Fabry Perot

Detection Method of Nature Gas Pipeline Leakage Based on Pattern Recognition

2011 ◽  
Vol 403-408 ◽  
pp. 3144-3148
Author(s):  
Shuai Wang ◽  
Jian Jun Yu ◽  
Ming Qing Yan ◽  
Shu Ying Xiao
Keyword(s):  
Pattern Recognition ◽  
Natural Gas ◽  
Safety Management ◽  
Gas Pipeline ◽  
Actual Condition ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Detection Technology ◽  
Continuous Progress ◽  
Nature Gas

Natural gas pipeline network is one of the most important city lifeline. Because of the complex process of pipeline operation, there has not an authoritative and reliable way to detect leakage. Taking into account the current continuous progress of pipeline network simulation and mature of gas SCADA system, the fault of natural gas pipeline network can be diagnosed by pattern recognition method. The method takes full advantage of the existing detection technology and the actual condition of the pipe network. It is very useful for pipeline safety management and maintenance.

Research on Technology of Gas Pipeline Leakage Detection Based on Infrasonic Wave

2013 ◽  
Vol 401-403 ◽  
pp. 1106-1109 ◽  
Author(s):  
Yong Qing Wang ◽  
Shun Wan ◽  
Ying Chang Zhou ◽  
Hong Guo Yang
Keyword(s):  
Leak Detection ◽  
Gas Pipeline ◽  
Transform Method ◽  
Natural Gas Pipeline ◽  
Performance Requirements ◽  
Detection Technology ◽  
Infrasonic Wave ◽  
And Performance ◽  
Leakage Monitoring ◽  
Basic Features

In the field of natural gas pipeline leak detection, based on infrasonic wave method of gas pipeline leak detection technology gradually be taken seriously. This paper introduces the basic features of pipeline leak signals and basic principles of infrasonic wave leak detection technology. It analyzes the key factors, which affect accurate positioning. According to the characteristics of leak signal and performance requirements of leakage monitoring system, the infrasonic wave speed algorithm in gas pipeline is modified. Using correlation analysis and wavelet transform method on the leakage signals, the dynamic response time diversity between sensors installed in first and last stop will be more precise. As a result, it improves the positioning precision of leak detection effectively.

Sign in / Sign up

Export Citation Format

Share Document