非介入式超声管道压力测量方法研究  

The Study of Non Intrusive Pressure Measurement Methods Using Ultrasonic in Pipes

作　　者：宋寿鹏[1] 阙沛文[1] 刘清坤[1] 

机构地区：[1]上海交通大学自动化检测研究所,上海200030

出　　处：《传感技术学报》2004年第4期565-568,共4页Chinese Journal of Sensors and Actuators

摘　　要：现有非介入式超声管道测压方法的不足主要表现在 :对测量不同管材、管径的管道压力适应能力差 ;低压测量误差大 ;温度、流速波动对测量准确度影响大。论文提出了利用扩大直接测量时间法、间接测量时间法 (相位测量法 )、共振法、衰减法以改善现有方法的不足。同时建立了涉及温度和流速的压力测量数学模型。为超声非介入式管道压力测量方法改进提供理论借鉴。The faults of ultrasonic non intrusive pressure testing methods in existence are: lack of adaptation to different pipe materials and diameters; greater error in low pressure testing; lower accuracy with fluctuation of temperature and flow velocity. Methods to improve these shortages are presented, they are expand direct time measurement; indirect time testing(phase testing); resonance and attenuation. A mathematic model related to temperature and flow velocity is established too. All these works may provide theoretical references for ultrasonic non intrusive pressure testing in pipes.

关 键 词：超声波 非介入 管道 压力测量 

分 类 号：TB55[理学—物理]