【摘要】 采用防水型加速度计,在不同工况下测定洗涤冷却管的振动信号,并用小波变换分析信号;讨论了表观气速和静态液位对小波功率谱的影响,分析了冷却管振动的原因。信号的功率谱指数分析表明,静态液位对振动能量的影响存在于3个区间,分别为0．35～0．69、0．69～1．30和1．30～1．69,其中以区间0．69～1．30的能量最大。更多还原

【Abstract】 Vibration signals of scrubbing-cooling tube are measured under different conditions with waterproof accelerometer and ana- lyzed with wavelet transformation.The effect of superficial gas velocity and static water height on the wavelet power spectrum is dis- cussed and the vibration mechanism of the tube is analyzed.The power spectrum exponent analysis indicates that there are three differ- ent intervals where the static water heights have the effect on vibration energy.They are as follows:0.35～0.69,0.69～1.30,1.30～1.69.The highest vibration energy is appeared in the second interval.更多还原