Research on Water Hammer Protection for Long-Distance Pressurized Pipeline Water Transmission Project Based on Bentley Hammer
[Purposes]In the long-distance pressurized pipeline water conveyance project,water hammer is easy to occur due to the complex water flow conditions inside the pipeline,which will not only affect the normal transportation of water flow,but also lead to pipeline rupture.Therefore,it is necessary to study the water hammer protection of long-distance pressurized pipeline water conveyance project.[Methods]Based on the supporting project of the South-to-North Water Diversion Project of the integra-tion of urban and rural water supply in Taiqian County,three numerical simulation models were estab-lished under the most unfavorable conditions by Bentley Hammer software:no protective measures,in-stallation of composite high-speed intake and exhaust valve water hammer protection,airbag air tank and composite high-speed intake and exhaust valve.The combined water hammer protection is carried out,and the numerical simulation analysis of the hydraulic transition process is carried out in the above three cases.The water hammer protection effect of the combined protection of the composite high-speed intake and exhaust valve and the airbag air tank is studied,and the relationship between the protection ability of the airbag air tank and the preset pressure and the volume of the tank is studied.[Findings]The results show that:composite high-speed inlet and exhaust valves and airbag air tanks can be well elimi-nate the hazards of water hammer in the pipeline,the protection ability of the airbag air tank increases with the increase of the tank volume and the preset pressure,and the tank volume has a more significant effect on its protection ability.[Conclusions]Selecting a reasonable tank volume and preset pressure will allow it to provide the best protection and maximize the economics of the water transfer project.
water hammerwater hammer protectioncompound high speed intake and exhaust valvebal-loon type air tankBentley Hammer
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NSTL
万方数据
维普
