煤气流量的示踪测量

阐述了气体流量示踪法测量的原理、装置和应用。在实验室管道上试验了用氦气作为示踪剂的流量示踪法测量技术,测定了管内空气的流量并和标准皮托管测量计算结果进行了比较,相对误差很小。又对北京焦化厂2台大、中型煤气压缩机入口流量用此法进行了测定,并计算了系统误差。实践表明,这种气体流量示踪法测量的特点是能够用于一般流量测量仪器难于适应的场合。对进一步提高测量精度进行了讨论。

Gas Flow Rate Measurement by Helium Tracing Method

Theory, apparatus and application of this method are described in this paper. In a laboratory pipe, the air flow rate is measured by this method with a helium tracer. The results are compared with the data got from a standard pitot tube in the same conditions, and the relative error is very small. The above method is also used in Beijing Coking and Chemicals Plant for measuring the inlet coke oven gas flow rate of one large and another medium scale compressors, the systemetic errors of experiment are calculated. It is showed in practice that this tracing method of gas flow rate measurement can be used in the condition which is inavailable for common flow rate measuring instruments. It is disscusscd for further improving the measuring precision.