Affiliation:
1. Technological Innovation Center for Major Infrastructure Construction Ningbo Institute of Dalian University of Technology Jiangbei District Ningbo China
2. Tianjin Key Laboratory of Refrigeration Technology Tianjin University of Commerce Tianjin China
3. SINOPEC Research Institute of Safety Engineering Qingdao Shandong China
4. State Key Laboratory of Safety and Control for Chemicals Qingdao Shandong China
5. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of Technology Dalian China
Abstract
AbstractNatural gas pipelines are exposed to complex production and transportation environments, leading to blockages of varying compositions and forms due to various factors. This paper proposes a pressure pulsing wave‐based pipe blockage detection method, and a series of pipeline blockage detection experiments of different materials are carried out, including hydrate blockage, ice blockage, paraffin blockage, and water blockage. Through the blockage detection calculation theory and the reflection and transmission characteristics during pressure wave emission, the blockage position, length, and section blockage rate under different blockage materials are obtained, and the influence of different blockage materials on the reflection and transmission signal characteristics of the pressure pulse wave is analyzed. The results show that the solid blocking material does not noticeably impact the reflectivity and reflective properties of pressure waves, and different cross‐sectional shapes have a noticeable impact on the reflectivity of the pressure wave. The reflected wave waveform of the liquid blockage material is visible but irregular. The average error of blockage location is 0.78%.