分析了压力波动信号互相关求液塞速度存在的不足,引入了压差波动分析法;明确了液塞到达和离开上、下游测压点的时刻与压差波动信号起峰点与落峰点位置的关系;指出了压差信号脉冲宽度为液塞头到达上游测压点和液塞尾离开下游测压点的时间间隔,脉冲宽度与液塞速度的乘积为液塞长度与差压传感器间距之和.把空气-水、柴油和机械油的试验结果与文献中经验关系式进行了对比,验证了该测量方法的正确性.
参考文献
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