KOUDian-liang,LIUCun-li,WANGXue-pan.Design of Water Hammer Protection for Long Distance and Large Diameter Cross?sea Water Supply Pipeline[J].China Water & Wastewater,2023,39(22):84-88.
Design of Water Hammer Protection for Long Distance and Large Diameter Cross?sea Water Supply Pipeline
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第22期
Page:
84-88
Column:
Date of publication:
2023-11-17
- Keywords:
- water hammer; water supply project; Bentley Hammer software
- Abstract:
- There are hitherto few studies on water hammer protection for long distance cross-sea water supply projects. Because it is difficult to install water hammer protection measures in cross-sea pipelines, the protection measures are mainly installed in the pipelines on land with limited implementation area, which also increases the difficulty to carry out water hammer protection. The water consumption of a coastal enterprise is 20×104 m3/d. The water is supplied to the enterprise from a reservoir through a lifting pump station. The pipeline is laid by single D1 600 mm steel pipe with a total length of about 36.5 km, of which approximately 24.8 km is buried on the seabed. The characteristics of the layout of the “concave” long distance cross-sea pipeline were analyzed via Bentley Hammer software, as well as the water hammer wave transmission under the water hammer condition caused by the pump stop, and the effects of combined measures such as two-stage valve closing, setting of one-way surge tower and air valve on the protection of water hammer were investigated. In response to the characteristics of high negative pressure and low water head line in the land section of the “concave” shaped pipeline model after crossing the sea, measures were proposed to deepen the burial depth of the pipeline in this section and slow down the slope of the pipeline, and economic and technological comparisons were conducted.
Last Update:
2023-11-17