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Study on the Way to Waterhammer Protection in Long Distance and High Velocity of Flow Flat Water Supply Pipe with Box-type Two-way Surge Tower

Author: GaoXueZhen
Tutor: YangYuSi
School: Chang'an University
Course: Municipal Engineering
Keywords: Long distance Flat water supply pipe box-type two-way surge tower waterhammer protect
CLC: TU991.39
Type: Master's thesis
Year: 2008
Downloads: 41
Quote: 0
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Abstract


The water shortage for economic development, population growth and water pollution has impeded the development of many cities. In order to solve this problem, the central authority and local government put a large number of people, material and money in long distance water supply program. For example, Transport Water from South to North, Transport Water from Yellow River to Neimenggu, Transport Water from Yellow River to Qingdao, Transport Water from Yellow River to Shanxi. In the long distance water supply pipe construction project, the most outstanding problem is how to protect the pipe.1. Method of characteristics which is widely used in hydraulic transient’s analysis is described, The capacity of equipment to alleviate waterhammer is considered in using“Method of characteristics”. It’s important to distinguish the capacity difference of the equipment for the project designer. For example, there is different gas vent valve, and there are different boundary conditions.2. The experimentation procedure of new style of alleviate waterhammer-the box-type two-way surge tower is described, performance curves of esperimental dates are analyzed, waterhammer protection effects of the box-type two-way surge tower are discussed. Compared with calculation results of other waterhammer protection equipments, its boundary condition is used to engineering examples.3. This thesis based on the senior’s research on six kind of air-water two-phase flow and develop in pressure and long distance water supply pipe. Then give a deeper analysis about the structure and capability of the equipments which is common use used on water supply pipe. and discuss the what equipments is demanded in order to alleviate water-hammer in long distance water supply program. Together with the project such as Pinggang water supply pipe project in Zhuhai、Water supply pipe for Kangping power plant project. Some suggestions are given to alleviate water-hammer in long distance pressure water supply pipe. This thesis can give some useful information on selecting the equipment to alleviate water-hammer in long distance water supply project.4. According to the character of water hammer in long distance flat water supply pipe, the hazard of air pocket motive was analyses. And the best way to alleviate the water hammer of cavity collapsing were proposed, that was a greatly help to made alleviate water hammer scheme in Kangping power plant, and it can be chosen to similar project.

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CLC: > Industrial Technology > Building Science > Municipal Engineering > Water supply project ( on the Water Works ) > Water distribution > Water hammer
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