WANG Jun,MA Ping-an,CUI Hong-jun,et al.Design of Long-distance Gravity Conveyance Pipeline for a Water Diversion Project in Xi’an[J].China Water & Wastewater,2021,37(22 22):84-88.
Design of Long-distance Gravity Conveyance Pipeline for a Water Diversion Project in Xi’an
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
22 22
Page:
84-88
Column:
Date of publication:
2021-11-17
- Abstract:
- In a long-distance water diversion project in Xi’an, the total pipeline length between the water source and the water plant is 42.5 km, and the diameter is DN2 400. The design method of the transmission pipeline such as the selection of the pipeline line, pipe diameter calculation, selection of the pipe material and water hammer analysis were introduced. To make full use of the elevation difference between the water source and the water plant, the long-distance gravity water conveyance was realized through the comparison and selection of the pipeline route and pipe diameter. It not only ensured the safety of water diversion, but also saved the construction investment and operating cost. Combined with the model, the pressure envelope simulated by the end valve at different closing time was analyzed and compared. The end valve closing water hammer and cut-off bridging water hammer were eliminated through the water hammer protection measures such as setting water hammer air valves and pressure relief valves along the water pipeline and prolonging the closing time of the end valve, so as to ensure the operational safety of the pipeline.
Last Update:
2021-11-17