JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2010, Vol. 40 ›› Issue (4): 138-143.

• Articles • Previous Articles     Next Articles

Numerical model analysis of backwater of a drainage system upon instantaneous startup of a circulating pump

GAO Kun-hua, ZHANG Cheng-yi, HU Yi-gong, XU Shi-qian, ZHENG Guan-jun, WANG Wei   

  1. Shandong Electric Power Engineering Consulting Institute Co. Ltd., Jinan 250013, China
  • Received:2009-11-03 Online:2010-08-16 Published:2009-11-03

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Abstract:

Combined with the problems that backwater of drainage system upon instantaneous startup of a circulating pump seriously existed in commissioning and operation of Shandong Huaneng′s Rizhao Power Plant Phase II Project (2×680MW), the backwater drainage system of DC circulating water was analyzed by using a mathematical model calculation. Then the calculation design elevation of the well top of the drainage well and siphon well were obtained, and some improvement measures on reducing backwater were proposed, which could provide experiences for reducing backwater on future designing of a DC circulating water system.

Key words:  instantaneous startup of circulating pump, mathematical model, backwater of drainage system;DC circulating water, improvement measures

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