The spiral case disk shaped drain valve joystick fracture repair of Three Gorges Hydropower Station

Huadian Technology ›› 2009, Vol. 31 ›› Issue (5): 54-56.

• 技术交流 • Previous Articles Next Articles

The spiral case disk shaped drain valve joystick fracture repair of Three Gorges Hydropower Station

XIAO Han，ZHOU Yaolong

China Water Conservancy and Hydropower Engineering Bureau NO. 8, Changsha 410007, China

Received:1900-01-01 Revised:1900-01-01 Online:2009-05-25 Published:2009-05-25

Abstract

Abstract:

In commission of Unit No.22 of Three Gorges Right Bank Hydropower Station, the volute shaped disk drain valve joystick has broken. The joystick has to be repaired for it is impossible to be replaced. According to careful study and comparison, the tungsten argon arc welding technology and mechanical workout were adopted finally for the repair. The concrete processing scheme and the result were analyzed and summarized, and relevant proposal for the handling of future same problem was given. After the repair, the joystick can meet the technical requirements of highprecision for slender piece.

Key words: spiral case, disk type valve, fracture, tungsten argon arc welding, repair

XIAO Han;ZHOU Yaolong. The spiral case disk shaped drain valve joystick fracture repair of Three Gorges Hydropower Station[J]. Huadian Technology, 2009, 31(5): 54-56.

[1]	DENG Hui. Cause analysis on the fillet weld cracking of the outlet header socket of hightemperature reheater [J]. Huadian Technology, 2019, 41(8): 74-77.
[2]	SUN Guoqiang. Cause analysis and preventive measures of steam turbine highpressure antifuel pipe fracture [J]. Huadian Technology, 2018, 40(12): 27-29.
[3]	XU Jinlei, FU Hongjun. Discussion on wearing repair technology of rotor journal of MS9001E gas turbine generator [J]. Huadian Technology, 2018, 40(10): 12-14.
[4]	WU Honghui1, WANG Wei2. Failure analysis of 20Cr1Mo1VNbTiB hightemperature bolt [J]. Huadian Technology, 2018, 40(10): 27-29.
[5]	ZHOU Liping. BHW35 boiler longitudinal and circumferential weld defect analysis and control [J]. Huadian Technology, 2017, 39(8): 48-49.
[6]	LI Weisheng, HAO Miaojin. Coal mine equipment point inspection and regular repair management mode discuss and application [J]. Huadian Technology, 2017, 39(11): 46-48.
[7]	LEI Qinghua1,WANG Jianwen2,WANG Zheng2. Wind power tower P&H prestress high strength anchor bolt fracture analysis [J]. Huadian Technology, 2016, 38(8): 34-36.
[8]	PENG Qinchun, ZHAO Xianguo. Cause analysis of steam turbine jacking oil distributor bolt breakage and treatment [J]. Huadian Technology, 2016, 38(6): 55-56.
[9]	XU Jingmin. Analysis on reason of fracture of valve stem of turbine HP main valve and repair [J]. Huadian Technology, 2015, 37(5): 44-45.
[10]	CHEN Jiaquan, LIU Fuying, SU Guangyao, HUANG Haixin, WU Genshen. Analysis on fracture failure of EHV line clamp terminal [J]. Huadian Technology, 2015, 37(4): 28-31.
[11]	JIA Shaowei. Analysis of air compressor journal fracture [J]. Huadian Technology, 2015, 37(11): 37-40.
[12]	TAN Guoliang,ZHANG Yong,LI Hongfu. Cause analysis and treatment of the cracks of liquid level meters for super critical boiler start up separator [J]. Huadian Technology, 2015, 37(11): 47-48.
[13]	FENG Yufeng. Analysis on reasons of fracture failure of main shaft of bucketwheel stackerreclaimer [J]. Huadian Technology, 2014, 36(9): 37-39.
[14]	NIU Wenxian1, NIU Baoxian2. Case analysis of major shaft fracture for the circulating water pump in a certain power plant [J]. Huadian Technology, 2014, 36(8): 27-29.
[15]	HAO Dongfu. Analysis on weld crack in support's lining plates of steam pipeline of power plant and treatment [J]. Huadian Technology, 2014, 36(7): 37-38.

The spiral case disk shaped drain valve joystick fracture repair of Three Gorges Hydropower Station

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments