泄流数对旋流式竖井涡室体形选择的作用  

Study on the Effect of the Figure of Discharge of Volute Chamber Selecting the Configuration of Cyclone Shaft

作　　者：赵建永[1] 刘韩生[1] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《人民黄河》2017年第5期112-114,共3页Yellow River

摘　　要：涡室是旋流式竖井水流起旋的关键,但涡室的体形选择没有明确的标准,故有必要寻找涡室体形选择的方法。通过引入无因次数即泄流数,分析一系列旋流式竖井工程实例和模型试验中的泄流数,并应用栗西沟水工模型试验进行验证,得到泄流数在旋流式竖井涡室选择方面的规律。泄流数能够非常清晰地描述旋流式竖井的泄流能力,椭圆曲线涡室为大泄流数旋流式竖井的合适体形,并且也满足小泄流数旋流式竖井的要求。Volute chamber is the critical position for flow rotating. There is no definite standard for selecting the configuration of volute cham-ber. So the passage attempts to find the method. Based on introducing dimensionless number,the figure of discharge,the passage analyzed the figure of discharge in a series of cyclone shaft practical engineering and the hydraulic model experiment,and assessed its accuracy based on the hydraulic model experiment of Lixigou. Then the passage got the regularity of selecting the configuration of volute chamber. The figure of discharge could describe the discharge capacity of cyclone shaft accurately. Volute chamber of ellipse form was suited for the cyclone shaft in high or low figure of discharge.

关 键 词：旋流式竖井 涡室 泄流数 体形 流量 

分 类 号：TV131.61[水利工程—水力学及河流动力学]