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.
出处
《传感技术学报》
CAS
CSCD
2004年第4期565-568,共4页
Chinese Journal of Sensors and Actuators
关键词
超声波
非介入
管道
压力测量
ultrasonic
non intrusive
pipe
pressure measurement
