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DTS Synthesis Gas Pipeline Leakage or Damage Detection and Location Based on Adaptive Variance Threshold Algorithm
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Ling-yue BI1, Qiang WANG1, *, Yu-hang WU2
Science Technology and Engineering | 2025, 25(12) : 5037 - 5044
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Science Technology and Engineering | 2025, 25(12): 5037-5044
• Papers·Electronic and Communicational Technology •
DTS Synthesis Gas Pipeline Leakage or Damage Detection and Location Based on Adaptive Variance Threshold Algorithm
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Ling-yue BI1, Qiang WANG1, *, Yu-hang WU2
Affiliations
  • 1 College of Energy Environment and Safety Engineering, China Jiliang University, Hangzhou 310018, China
  • 2 College of Measurement and Instrument, China Jiliang University, Hangzhou 310018, China
Published: 2025-04-28 doi: 10.12404/j.issn.1671-1815.2404114
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In the coal-water slurry gasification system, a reduction in the temperature of the syngas pipeline can cause acid gases to condense, which may lead to corrosion of the pipeline's inner surface and potentially result in perforation leaks. To enable prompt detection and precise localization of any leakage or damage within the syngas pipeline, The techniques were explored for identifying and locating such issues through distributed temperature sensing(DTS). An algorithm based on an adaptive variance threshold was proposed for DTS detection and localization. Initially, hierarchical clustering was utilized to recognize detected signals, facilitating differentiation between normal operating conditions and those indicative of leaks or damages. Following this, identified leak signals undergo processing via variance analysis combined with adaptive threshold settings to accurately determine leak or damage locations. This approach shows improved accuracy in pinpointing leak or damage sites compared to fixed threshold methods as well as selective average threshold methods, enhancing positioning precision by 0.32 m and 0.17 m respectively. A temperature measurement experiment conducted at a coal gasification facility successfully confirmed accurate identification of leakage or damage points.

coal gasification device  /  synthesis gas pipe  /  distributed optical fiber  /  leakage or damage location  /  cluster analysis  /  variance processing
Ling-yue BI, Qiang WANG, Yu-hang WU. DTS Synthesis Gas Pipeline Leakage or Damage Detection and Location Based on Adaptive Variance Threshold Algorithm[J]. Science Technology and Engineering, 2025 , 25 (12) : 5037 -5044 . DOI: 10.12404/j.issn.1671-1815.2404114
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Year 2025 volume 25 Issue 12
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Article Info
doi: 10.12404/j.issn.1671-1815.2404114
  • Receive Date：2024-06-03
  • Online Date：2025-07-09
  • Published：2025-04-28
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History
  • Received：2024-06-03
  • Revised：2025-02-07
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Affiliations
    1 College of Energy Environment and Safety Engineering, China Jiliang University, Hangzhou 310018, China
    2 College of Measurement and Instrument, China Jiliang University, Hangzhou 310018, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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