结构特点：1、采用平衡双阀座系统，加倍增大流量面积、获得特大排水量。
Structures: 1, tow balanced valve bases to increase the area of flux and acquire large amount of water discharged.
实验结果表明，适当增大进气口面积，可提高风机的效率并扩大流量范围。
The experiment results show that the total efficiency and the flowrate are improved with the increase of blower inlet area.
基于加大流量设计法，采用增加分流叶片和增大喉部面积等措施，研制了高效区宽离心泵。
The centrifugal pump with wide efficient range is developed based on the maximum flow design method.
水泵装置在非最优工况下变速运行时，大流量侧装置性能参数按相似律换算误差变小，在小流量侧换算误差增大，最大相对误差达3.043%。
When the pump runs off the peak efficiency, the error of conversion method decreases in the large flow-rate region, while increases in the small flow-rate region, with a maximum error of 3.043%.
高速电磁开关阀存在大流量与高速响应之间的矛盾。通过对锥阀特性的分析，设计了一种阀芯、阀套同时运动的芯套双动高速开关阀，该阀增大了高速开关阀的开口度，提高了响应速度和流量。
To improve the response speed of on-off solenoid valve of big flux, detailed analysis on poppet valve is given and an on-off solenoid valve with movement of both spool and cover is designed.
高速电磁开关阀存在大流量与高速响应之间的矛盾。通过对锥阀特性的分析，设计了一种阀芯、阀套同时运动的芯套双动高速开关阀，该阀增大了高速开关阀的开口度，提高了响应速度和流量。
To improve the response speed of on-off solenoid valve of big flux, detailed analysis on poppet valve is given and an on-off solenoid valve with movement of both spool and cover is designed.
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