液相高压脉冲放电产生的强氧化性活性物质和紫外光、冲击波等可以有效地用于水处理。为此,以扁藻作为处理目标物,采用多喷嘴–板式水处理装置和气液两相纳秒负脉冲放电形式,分析了反应器电气特性、不同放电参数对扁藻杀灭率的影响。实...液相高压脉冲放电产生的强氧化性活性物质和紫外光、冲击波等可以有效地用于水处理。为此,以扁藻作为处理目标物,采用多喷嘴–板式水处理装置和气液两相纳秒负脉冲放电形式,分析了反应器电气特性、不同放电参数对扁藻杀灭率的影响。实验结果表明,随着脉冲峰值电压的增大,单脉冲能量随之增加;能量效率先增后减,在脉冲峰值电压为-7.6 k V时出现拐点,此时能量效率为34.1%。扁藻的杀灭率随着脉冲峰值电压、脉冲重复频率、放电处理时间的增加而增大;随着鼓气速率的增大,扁藻的杀灭率呈现先增后减的趋势。当脉冲峰值电压为-9.4 k V、鼓气速率为70 m L/min、循环速率为380 m L/min、放电处理时间为30 min、脉冲重复频率为70 Hz时,扁藻的杀灭率为100%。展开更多
The structure and principle of the GMM actuator and the new nozzle flapper valve with the GMA were presented. Based on the axis-symmetric FEM model of the GMA driving magnetic field was computed. And the field distrib...The structure and principle of the GMM actuator and the new nozzle flapper valve with the GMA were presented. Based on the axis-symmetric FEM model of the GMA driving magnetic field was computed. And the field distribution for different input currents and variant curves of magnetic flux density along the axis were determined by using FEM. Magnetic flux density of the GMM actuator was practically measured under different input currents. The experiment of output displacement and frequency response of the GMM actuator was carried out under typical working conditions. The experiment results show that the GMA for nozzle flapper servo valve has bigger output displacement and quick response speed. And theoretical basis was presented to further introduce the GMA nozzle flapper valve into two stage electro-hydraulic servooo valve.展开更多
文摘液相高压脉冲放电产生的强氧化性活性物质和紫外光、冲击波等可以有效地用于水处理。为此,以扁藻作为处理目标物,采用多喷嘴–板式水处理装置和气液两相纳秒负脉冲放电形式,分析了反应器电气特性、不同放电参数对扁藻杀灭率的影响。实验结果表明,随着脉冲峰值电压的增大,单脉冲能量随之增加;能量效率先增后减,在脉冲峰值电压为-7.6 k V时出现拐点,此时能量效率为34.1%。扁藻的杀灭率随着脉冲峰值电压、脉冲重复频率、放电处理时间的增加而增大;随着鼓气速率的增大,扁藻的杀灭率呈现先增后减的趋势。当脉冲峰值电压为-9.4 k V、鼓气速率为70 m L/min、循环速率为380 m L/min、放电处理时间为30 min、脉冲重复频率为70 Hz时,扁藻的杀灭率为100%。
文摘The structure and principle of the GMM actuator and the new nozzle flapper valve with the GMA were presented. Based on the axis-symmetric FEM model of the GMA driving magnetic field was computed. And the field distribution for different input currents and variant curves of magnetic flux density along the axis were determined by using FEM. Magnetic flux density of the GMM actuator was practically measured under different input currents. The experiment of output displacement and frequency response of the GMM actuator was carried out under typical working conditions. The experiment results show that the GMA for nozzle flapper servo valve has bigger output displacement and quick response speed. And theoretical basis was presented to further introduce the GMA nozzle flapper valve into two stage electro-hydraulic servooo valve.
