[China Instrument Network Instrument Development] Recently, the National Valve Product Quality Supervision and Inspection Center (Fujian) undertook the General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) scientific and technological planning project “Research on Acoustic On-line Detection Technology of Valve Leakage†successfully passed the review and acceptance of the expert group. The project completed the content and requirements stipulated in the project task book. The workload is saturated. The research results have engineering application value. It has been highly evaluated by the expert group and it is agreed that the technology can be applied and promoted.
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The valve is an important control component in the fluid delivery system and has the functions of cutting off, adjusting, diverting, preventing backflow, regulating, diverting, or overflow and pressure relief. At present, the use of a large number of valves, the valve leakage fault is not easy to be found, there are many high temperature and high pressure, toxic and hazardous, flammable and explosive working media in the petrochemical industry production site, in the event of a leak, it is likely to have a major safety accident.
The project has established a domestic advanced internal leakage testing device for the valve, which can test the sound intensity of various internal leakage conditions of various valves, and adopt multi-physics coupling technology to simulate the modal and flow fields of different internal leakage conditions of various valves. Harmonic field simulation research and analysis, determine the corresponding relationship between sound intensity and endoleak under endoleak conditions, provide guidance for the qualitative and quantitative on-line leak detection of valves, and have important economic and social benefits.
(Original title: The National Bureau of Quality Supervision and Inspection Center undertook the acceptance of the General Administration of Science and Technology project)
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