Analysis on reasons of slow opening process of governor valve and interceptor valve

Abstract

Abstract: Abstract:After the 1000MW unit of Guangdong Datang International Chaozhou Power Generation Company Limited operated for three years, the strainer of servo valve was blocked, which caused the valve opened slowly, and the deviation between instruct and feedback signal increased.The working principle of the servo valve was introduced, and the requirements of normal operation and maintenance of the servo valve and the speed governing system were proposed.The fault and reasons were analyzed,the correctness of the analysis was verified by treatment and disassembly.

Key words: Keywords:valve, servo valve, strainer, blockage, slow

WANG Hui. Analysis on reasons of slow opening process of governor valve and interceptor valve[J]. Huadian Technology, 2014, 36(3): 57-59.

[1]	WANG Wei, WANG Lele, KONG Fanhai, CHEN Mu, YAO Yan, LEI Siyuan. Selection and design of SCR catalyst for a high-temperature dedusting and denitration integrated device [J]. Huadian Technology, 2020, 42(9): 26-31.
[2]	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.
[3]	LIANG Guozhu. Transformation methods for PT slowmelting judgment of UN 5000 excitation system [J]. Huadian Technology, 2019, 41(9): 78-80.
[4]	KE Hao，LI Zhenliang，WANG Xi. Cause analysis and countermeasures for tube burst of hightemperature superheater in supercritical boiler [J]. Huadian Technology, 2019, 41(2): 26-27.
[5]	ZHANG Shaoxing. Application of rotary air flow clearing technology in the coal bunker unblocking [J]. Huadian Technology, 2018, 40(7): 40-42.
[6]	CHEN Yongsheng. Regular deviation analysis and treatment of tube explosions caused by oxide scale clogging at final superheater of boilers [J]. Huadian Technology, 2018, 40(6): 23-25.
[7]	HUA Lei. DCS loop fault analysis and treatment [J]. Huadian Technology, 2017, 39(5): 42-43.
[8]	ZHU Jiaying1, ZHAO Weigang2, GUO Sanhu2. W boiler Y type heavy oil gun blockage cause analysis and treatment [J]. Huadian Technology, 2017, 39(1): 24-26.
[9]	LI Youxin. Direct firing pulverizing system coal powder pipe blockage test and treatment [J]. Huadian Technology, 2017, 39(1): 38-39.
[10]	ZHAO Chao, ZHU Yan. A new type water supply pump steam turbine adjusting valve site change tool and application [J]. Huadian Technology, 2017, 39(1): 43-44.
[11]	YANG Caixia. Improvement of roll screen control system while coal blockage [J]. Huadian Technology, 2016, 38(4): 25-26.
[12]	ZHANG Xuehai. On line replacement of valve servo valve and the analysis of the servo valve jam of 600MW steam turbine [J]. Huadian Technology, 2016, 38(2): 35-38.
[13]	DUAN Xiaoyun. Analysis on reasons of ash blockage of boiler air preheater and treatment measure [J]. Huadian Technology, 2015, 37(5): 50-52.
[14]	ZHUANG Xiangyang, ZHANG Qingfeng, ZHU Yong, WANG Youquan. Reformation of bypass system of thermal power plant and optimization of protection control [J]. Huadian Technology, 2015, 37(4): 45-47.
[15]	WANG Chengliang. Study on blockage prevention technology for rotative air preheater of boiler [J]. Huadian Technology, 2015, 37(3): 18-21.

Analysis on reasons of slow opening process of governor valve and interceptor valve

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments