| Cite this article: | 孙哲豪.高扬程小流量加压供水工程水锤防护设计研究[J].灌溉排水学报,0,():-. |
| 孙哲豪.高扬程小流量加压供水工程水锤防护设计研究[J].灌溉排水学报,0,():-. |
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| Research on Water Hammer Protection Design of High Head and Small Flow of Pressurized Water Supply System |
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孙哲豪
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Huadong Engineering Corporation Limited, Powerchina
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| Abstract: |
| 【Objective】The research is based on a water supply project located in southeast China, the pipeline length is 1.6km, water supply scale is 1.2×104m3/d, the design water-lift is 252m. The project adopts pressure flow water supply mode. The terrain along the pipeline is undulating, the water head is high and the water hammer protection design is complex. Therefore, the water hammer analysis and protection design of high head and small flow pressure water delivery system are carried out.【Method】The hydraulic transient process numerical simulation software ----HysimInt developed by Huadong Engineering Corporation Limited was used for modeling and calculation analysis. The calculation and analysis of the pressure water supply system under the condition of water hammer caused by pump cut-off are carried out through the special model system of the software. Based on the calculation and analysis results, the water hammer protection design of the water supply system is carried out.【Result】By setting air tank, slow-closed check valve, air valve in water supply system and optimizing the rotary inertia of water pump , the water hammer problem caused by pump cut-off is effectively solved.【Conclusion】The paper provides reference for water hammer protection design of similar water supply project. |
| Key words: pump cut-off water hammer; pressure flow; water hammer protection; air tank. |
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