Water hammer protection measures for a cross reservoir area underwater water supply pipeline
Long-distance water supply pipeline is an important water conservancy engineering measure to solve industrial and domestic water supply.For underwater water supply pipelines,conventional waterproof hammer measures cannot be adopted,and a single outlet style waterproof hammer air valve and pressure regulating pipe are used instead of air valves to meet the requirements of waterproof hammers for pipelines.Through the characteristic line method,the calculation results of the water hammer of the closing valve,the water hammer of the open valve and the water hammer of the flow regulation water hammer of the water supply pipeline are analyzed and studied.The results show that the positive and negative pressures of the waterproof hammer air valve with a single outlet pattern and the underwater water supply pipe with the pressure regulating pipe meet the requirements of the specification.