To study the flow state,noise,venting reaction force,and low-temperature conditions of excessive venting in gas pipelines,and ensure the safety and reliability of venting operations,this paper adopted the OLGA software modeling method and venting parameters were calculated based on actual cases.Based on the calculation results,the impact of excessive venting in gas pipelines on pipeline operation was analyzed.Conclusion was drawn that it is recommended that the initial opening of the vent valve does not exceed 20%,and then the opening of the vent valve is gradually increased.The Mach number does not exceed 0.6 to prevent excessive noise.When designing the foundation of the vent riser,the vent reaction load needs to be considered.The venting riser needs to consider the bending stress generated by wind load and verify the low-temperature and low stress working conditions.
关键词
超量放空/OLGA/临界流动/噪声/放空反力/低温低应力工况
Key words
excessive venting/OLGA/critical flow/noise/venting reaction force/low temperature and low stress condition
维普
万方数据