Cause analysis and solution for tube burst in highpressure superheater of NG-M701F-R heat recovery boiler

Abstract

Abstract:

There were several tube bursts in the highpressure superheater of NG-M701F-R heat recovery boiler during its initial operation,which seriously affected the safety of the unit.Cause analysis is conducted from operation mode，desuperheating water，welding，structure and exhaust gas of the unit.It is convinced that periodic thermal stress，overrange desuperheating water flow，poor welding quality，unreasonable structure of tube bundles and rotating exhaust gas flow are the main reasons. By optimizing operation mode of the unit，strengthening management of highpressure superheater maintenance，adding compensation bend，reinforcing the antivibration bracket and installing antivibration beam, tube in the highpressure can be protected from burst.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">NG-M701F-R, heat recovery boiler, highfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">pressure superheater, tube burst, desuperheating water flow, welding quality, structure of tube bundles, rotating exhaust gas flow

ZHANG Junwei.

Cause analysis and solution for tube burst in highpressure superheater of NG-M701F-R heat recovery boiler [J]. Huadian Technology, 2019, 41(7): 46-49.

[1]	CHEN Hongyan，TANG Zhiguo，CHEN Qi，WANG Yongxu，WU Luming. Optimized method on distributed reactive power compensation in lowvoltage distribution network based on interval power flow calculation [J]. Huadian Technology, 2020, 42(6): 1-5.
[2]	WANG Lijie，WANG Hongteng，SUN Bo. Operation region partition for hydraulic turbine generator units based on stability test data [J]. Huadian Technology, 2020, 42(6): 6-9.
[3]	WU Luming，XUE Mingjun，CHEN Qi，WANG Yongxu，TANG Zhiguo，CHEN Hongyan1,2. 一起电子互感器异常引发的复杂发展性故障分析及改进 [J]. Huadian Technology, 2020, 42(6): 10-15.
[4]	NIU Ben. Water quality control technology for circulating cooling water taking soft water as source [J]. Huadian Technology, 2020, 42(6): 16-21.
[5]	SHANG Liyang，FAN Suxiang，ZHANG Zhiyong，YU Penghui，HE Yong，JI Yanru. Design and application of intelligent algaeblocking equipment for water conveyance main canal [J]. Huadian Technology, 2020, 42(6): 22-24.
[6]	ZHANG Hailong，YANG Guangrui，JING Xinjing，XING Leqiang，LIU Chao，DANG Lijun. Research on energysaving optimization for mediumspeed mill pulverizing systems [J]. Huadian Technology, 2020, 42(6): 25-30.
[7]	WANG Yunpeng,DUAN Xiaoyun. Retrofit and combustion adjustment of a lownitrogen burner in a 330MW cogeneration unit [J]. Huadian Technology, 2020, 42(6): 35-42.
[8]	SHAO Lei，PAN Guangqiang，ZHANG Yuquan，CHU Hao，CAO Wei. Application of acoustic blockage removal technique applied in urea pyrolysis furnaces [J]. Huadian Technology, 2020, 42(6): 43-46.
[9]	WANG Zhiyong，XU He，ZHU Huimin，GE Junpei，XU Jing. Comparative analysis of calculation models for thermal efficiencies of waste heat boilers in gassteam combined cycle units [J]. Huadian Technology, 2020, 42(6): 47-51.
[10]	WANG Dongzhen，GE Leijiao. Optimization strategy of multiple output cables samephase parallel operation for gas turbine generators [J]. Huadian Technology, 2020, 42(6): 52-56.
[11]	GAO Yong，TIAN Xin，WU Yinchen. Evaluation of prefilter improvement effect of gas turbine air intake filtration system [J]. Huadian Technology, 2020, 42(6): 57-61.
[12]	XING Wu，GUO Xiao，WANG Zhe，SHI Bolun. Application of parameter identification principle in the protection of magnetic shunt reactor [J]. Huadian Technology, 2020, 42(6): 47-51.
[13]	WU Siming，TONG Jialin，WU Yueseng，QI Yong，SUN Wuyi. Comprehensive upgrading reconstruction and performance analysis of a subcritical boiler [J]. Huadian Technology, 2020, 42(6): 66-71.
[14]	YANG Rui. Construction and implementation of intelligent, digital and networked heatsupply system [J]. Huadian Technology, 2020, 42(6): 83-86.
[15]	YOU Jia，WANG Runfang，MA Dawei，JIANG Shaoyi，ZHU Renbin，CHEN Jian，WANG Kefeng. Assessment of alternative energy based on the source apportionment of PM2.5 in Hefei City [J]. Huadian Technology, 2020, 42(1): 1-7.

Cause analysis and solution for tube burst in highpressure superheater of NG-M701F-R heat recovery boiler

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments