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

KANG Jie; WU Dongyin

doi:10.7652/xjtuxb202510011

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

更新时间：2025-09-28

- Study on Leakage Characteristics and Optimization Strategies of Steam Soot Blowers under Variable Operating Conditions
- Journal of Xi'an Jiaotong University Vol. 59, Issue 10, Pages: 117-125(2025)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202510011
  CLC： TK124
- Received：06 April 2025，
  
  Published：10 October 2025
- 稿件说明：
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KANG Jie, WU Dongyin. Study on Leakage Characteristics and Optimization Strategies of Steam Soot Blowers under Variable Operating Conditions[J]. Journal of Xi'an Jiaotong University, 2025, 59(10): 117-125.
DOI：

KANG Jie, WU Dongyin. Study on Leakage Characteristics and Optimization Strategies of Steam Soot Blowers under Variable Operating Conditions[J]. Journal of Xi'an Jiaotong University, 2025, 59(10): 117-125. DOI： 10.7652/xjtuxb202510011.

摘要

为解决吹灰器蒸汽泄漏问题的理论研究以及定量计算研究有限的问题，基于填料密封结构，对蒸汽吹灰器的泄漏特性进行了研究。采用改进的平板泄漏模型，分析了蒸汽参数沿泄漏路径的变化规律以及不同工况下的单位泄漏量。研究结果表明：在标准工况下，蒸汽的密度、压力和温度沿泄漏路径分别下降了92%、92%、4%，并且在接近出口时降幅显著增大；蒸汽的温度和压力对出口密度影响较小，随着吹灰蒸汽温度升高和压力降低，吹灰器的单位泄漏量呈减少趋势；在磨损工况下，当磨损系数为2时，密封环仍具一定的密封效果，单位泄漏量为3.49×10

-4

kg·m

-1

·s

-1

，当磨损系数大于2时则几乎完全失效，仅存密封填料仍起作用，单位泄漏量增加到3.91×10

-4

kg·m

-1

·s

-1

，在磨损发生的初期对密封结构进行维护至关重要；通过适当提高吹灰蒸汽温度，同时降低压力，可以有效减少单位泄漏量。研究为优化蒸汽吹灰器密封性能的评价、改进提供了理论依据和实践参考，对提高设备运行效率和安全性具有一定的参考意义。

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 3.49×10

-4

kg·m

-1

·s

-1

.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 3.91×10

-4

kg·m

-1

·s

-1

.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.

关键词

Keywords

references

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