天然气流量计检定站仿真模型及工艺操作优化

Establishment of simulation model and optimization of process operation for verification station of natural gas flowmeter

随着天然气消费量的爆发式增长,天然气贸易交接计量对流量计的检定需求越来越大。针对流量计检定过程中工况多样、人工检定效率低下等问题,利用水力仿真软件SPS,通过现场瞬态数据分析与校准,构建出与检定站现场精度水平一致的仿真模型。采用阀的流量系数,推导出各阀所对应流量调节的区域范围。将理论计算得出的调节方式通过仿真模型进行验证,结果表明:该调节方法可以减少调节阀的反复动作,优化了检定操作,加快了检定速度。

With the explosive growth of natural gas consumption, the demand of gas measurement in trade transaction for flowmeter verification is increasing. In response to the problems of diversified working conditions during flowmeter verification and low efficiency of manual verification, a simulation model with same accuracy of the verification station was established with the hydraulic simulation software SPS through transient data analysis and simulation model calibration. The range of flow regulation for each valve was deduced with the flow coefficient of valve, and the theoretically-calculated regulation method was verified with the simulation model. As indicated by the results, by adopting this method, the repeated action of control valve can be reduced, the verification operation is optimized, and the verification speed is accelerated.