高起伏长输管线水锤模拟及防护方案优选

摘要

To make sure of surge protection scheme of water supply pipeline with long distance and huge terrain variation,this paper builts up a surge protection model and obtains the solution of the model by method of characteristics.Surge tank,one way surge tank and vacuum breaker were used as negative pressure protection equipment,then the optimal surge protection scheme was determined based on the simulated result of surge protection effects under the condition of pump trip.The results showed that when the air valve and vacuum breaker valve were installed together on the peak of the pipeline,the effect of surge protection is the best.%针对长距离、高起伏、首尾落差不大的输水管线水锤防护方案难以准确确定的问题,建立了水锤防护设备模型,并以特征线法对其进行求解.分别以双向调压塔、单向调压塔、真空吸气阀为管线负压防护设备,模拟分析事故停泵管线水锤防护效果,最终确定最优水锤防护方案.结果表明,在管线坡峰处综合使用空气阀与真空吸气阀,水锤防护效果最好.