变工况蒸汽吹灰器泄漏特性及优化策略研究

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中图分类号：TK124 文献标志码：A

DOI： 10.7652/xjtuxb202510011 文章编号：0253-987X（2025）10-0117-09

Study on Leakage Characteristics and Optimization Strategies of Steam Soot Blowers under Variable Operating Conditions

KANG Jie，WU Dongyin （School of Energy and Power Engineering，Xi'an Jiaotong University，Xi'an 71oo49，China）

Abstract： To address the limited theoretical and quantitative research on steam leakage in soot blowers，this study investigates the leakage characteristics of steam soot blowers based on packing seal structures. An improved flat-plate leakage model is employed to analyze the variation patterns of steam parameters along the leakage path and the unit leakage rate under different operating conditions. The results indicate that under standard conditions，the density， pressure， and temperature of steam along the leakage path decrease by 92% ， 92% ，and 4% ，respectively， with a significant acceleration in the decline near the outlet. Steam temperature and pressure have minimal impact on outlet density. As the blowing steam temperature increases and pressure decreases，the unit leakage rate of the soot blower exhibits a decreasing trend. Under wear conditions，when the wear coefficient is 2，the sealing ring still provides some sealing effect，with a unit leakage rate of . However，when the coefficient exceeds 2，the sealing ring nearly fails entirely， leaving only the packing material functional，and the unit leakage rate increases to . This highlights the critical importance of maintaining the sealing structure during the early stages of wear. By appropriately increasing the blowing steam temperature and reducing pressure， the unit leakage rate can be effectively reduced. This study provides a theoretical basis and practical reference for evaluating and improving the sealing performance of steam soot blowers， offering significant implications for enhancing equipment operational efficiency and safety.

Keywords： steam soot blower;leakage；sealing structure；wear conditions； optimization strategies

在燃煤锅炉运行过程中，受热面上容易积灰，不仅降低锅炉热效率，还可能引发局部过热等问题，危及设备运行安全[1-5]。（剩余11414字）