Effect of Pump Inertia & Valve Closure time on the Transient Flow Condition of a Water Supply Network: A Case Study
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2017 by IJETT Journal|
|Year of Publication : 2017|
|Authors : Sachin Kumar, Dr. Ruchi Khare
|DOI : 10.14445/22315381/IJETT-V49P218|
Sachin Kumar, Dr. Ruchi Khare "Effect of Pump Inertia & Valve Closure time on the Transient Flow Condition of a Water Supply Network: A Case Study", International Journal of Engineering Trends and Technology (IJETT), V49(2),115-121 July 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Water distribution network is the most essential part of world’s infrastructure. The main purpose of water supply system is to supply the required amount of water at the desired head to all the consumers. Any water distribution scheme comprises of water intake, treatment plant, pumping mains and distribution lines. In the present work pumping mains are designed to supply water to 30 OHT (Over Head Tank) which fulfills the demand of 74 villages and 2 towns located in Budni Block of Sehore district in Madhya Pradesh(India). The clear water pumping lines are designed to fulfill the demand up of 20 years taking 2015 as base year. The steady flow analysis is done by using Bentley software. The designed pipes are required to be checked for their safe working during minimum and maximum pressure development in these pipes because of sudden closure of valves and shutdown due to pump failure. All these circumstances creates the transient flow condition. In present work Transient flow analysis of the designed pumping network is carried out to see the maximum and minimum pressure generated due to sudden valve closure and shutdown of supply pump. The effect of control valve closure time and pump inertia on maximum and minimum pressure in the pipes is analyzed by varying valve closing time and pump inertia to 6-8 different values. It was found that maximum and minimum pressure at different pipe located in pumping network are greatly affected by inertia of the pump and control valve closing time.
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Hydraulic transients, pump inertia, valve closure time, water hammer.