Power station boiler furnace water-cooling wall tube leak locating method based on acoustic theory

2015 ◽  
Vol 77 ◽  
pp. 12-19 ◽  
Author(s):  
Shiping Zhang ◽  
Guoqing Shen ◽  
Liansuo An ◽  
Xianbo Gao
Keyword(s):  
Water Cooling ◽  
Power Station ◽  
Boiler Furnace ◽  
Power Station Boiler

RBI Technology for Boiler Superheater of Power Station

2010 ◽  
Author(s):  
Fujun Liu ◽  
Shoubao Ding ◽  
Shuai Kong ◽  
Dan Song ◽  
Dongming Hu ◽  
...  
Keyword(s):  
High Temperature ◽  
Petrochemical Industry ◽  
Failure Mechanisms ◽  
Economic Loss ◽  
Probability Of Failure ◽  
Water Cooling ◽  
Remaining Life ◽  
Power Station ◽  
Modification Factor ◽  
Power Station Boiler

Risk-Based Inspection (RBI) has been wide used in petrochemical industry all over world with good performance. But its application in power station boiler is rarely reported. The “four tubes” of the power station boiler, namely economizer, water-cooling wall, superheater and reheater tubes, are prone to blast due to the direct fire heating, and it causes non-plan shutdown and leads to severe influence to safety. In this paper, the failure mechanisms of power station boiler were analyzed, the calculation of modification factors for high-temperature smoke erosion and high-temperature creep was researched. Considering the specific situations in China, the probability of failure modification factor based on remaining life was proposed. Then, the method of economic loss calculation was established based on the differences between the petrochemical equipment and the power station boilers, and the proper classification scope was established according an investigation. At last, a superheater project was carried out, the risk was fixed and the proper management and inspection suggestions were proposed.

scholarly journals Research on Prediction of Vertical Water Wall Temperature of Power Station Boiler Based on Deep Learning and Expert Experience

2021 ◽  
Vol 1922 (1) ◽  
pp. 012011
Author(s):  
Xian-tao Du ◽  
Yu-jia Cui ◽  
Ming-hao Wang ◽  
Liang-wei Xia ◽  
Qiang Yu ◽  
...  
Keyword(s):  
Deep Learning ◽  
Wall Temperature ◽  
Power Station ◽  
Water Wall ◽  
Power Station Boiler

Model and Algorithm for Thermal Performance Calculation of Power Station Boiler Based on Process Steady-State Simulation Theory

2013 ◽  
Vol 483 ◽  
pp. 587-593
Author(s):  
Hong Kai Liao ◽  
Yue Xi Yu ◽  
Yan Ling Wu ◽  
Wei Zhong
Keyword(s):  
Steady State ◽  
Thermal Performance ◽  
Simulation Theory ◽  
General Purpose ◽  
Thermal Calculation ◽  
Process Unit ◽  
Power Station ◽  
Steady State Simulation ◽  
Power Station Boiler ◽  
Performance Calculation

Thermal performance calculation is the core task of designing power station boiler. By abstracting generalized components and generalized fluid nodes, and defining the process unit and process section at the logic level, the universal physical model of boiler was built in a particular form of flowsheet. Meanwhile, a sequential modular approach was proposed as the main algorithm for boiler thermal calculation based on process system steady-state simulation theory. Two key problems in the algorithm, i.e., module calculations and the logics of calling the modules calculations were explained. Finally, a practically developed system BESS, which has excellent flexibility and extensibility was presented. It turns out that the model and algorithm can be successfully employed in developing the general-purpose software for boiler thermal calculation.

Analysis on Welding Crack of Subcritical Power Station Boiler Platen Superheater Header

2012 ◽  
Vol 251 ◽  
pp. 446-449 ◽  
Author(s):  
Yan Ting Feng ◽  
Xiang Feng Zheng ◽  
Xue Xia Xu ◽  
Guo Zhen Dong ◽  
Yong Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Welding Residual Stress ◽  
Composition Analysis ◽  
Power Station ◽  
Element Analysis ◽  
Test Chemical ◽  
Welding Defects ◽  
Chemical Composition Analysis ◽  
Leakage Failure ◽  
Power Station Boiler

Welding crack analysis was carried out on tee joint crack of boiler platen superheater header (12Cr1MoV) of subcritical power station applying finite element analysis,microanalysis, mechanical properties test, chemical composition analysis, metallography examination and SEM observation etc. Results indicated that the improper structure, the original welding defects, higher welding heat input, excessive welding residual stress and improper heat treatment led to cold crack and reheat crack ,then induced to the leakage failure while operating.the welding crack originated at the original defects, connected with reheat cracks during propagation and led to leakage finally.

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